Air knife capable of discharging air uniformly

Abstract

The utility model belongs to the technical field of air knife equipment, and particularly relates to an air knife capable of discharging air uniformly. The air knife uniform in air outlet comprises an air knife body, an air nozzle plate and an air uniformizing plate. The air knife main body is provided with an air inlet, the tuyere plates are connected with the air knife main body, and adjacent tuyere plates in the width direction form an air outlet; the air uniformizing plate is arranged on the air knife body and comprises a porous structure for disturbing airflow in the air knife body. According to the air knife, by arranging the air uniformizing plate, airflow can be disturbed in the air knife body, the entering large airflow is dispersed into a plurality of small airflow, the small airflow is recombined after passing through the pores, the airflow speeds in all directions tend to be consistent due to the dispersion effect of the pores, and finally the uniformity degree of the overall flow speed is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air knife equipment, and particularly relates to an air knife with uniform air outlet. Background Art

[0002] At present, air knives have a large number of applications in the industrial field, such as blowing water and dust removal. The air knife is used to blow off dust, moisture, etc. on the surfaces of flat objects such as steel plates and aluminum alloy profiles, blow off moisture on the surfaces of bottle bodies such as beverage bottles and packaging cans, blow off impurities and dust, residual liquid, moisture on the outer packaging, and clean conveyor belts. During actual use, the air knife usually needs to adjust the air outlet direction, air outlet distance, air outlet speed, air volume, etc. to dynamically adjust according to the use requirements to achieve a good cleaning effect.

[0003] Among them, improving the air outlet uniformity of the air knife is crucial. It can ensure a uniform wind force distribution on the treated surface, so as to achieve the best drying or cleaning effect without damaging the object, improve the operation efficiency and quality stability, reduce energy consumption and production costs at the same time, and realize a more refined and efficient production process management.

[0004] Chinese Patent CN202111430007.3 provides a detachable air knife with uniform air outlet. A uniform flow air cavity is formed by multiple air ducts. The air knife body is strip-shaped. After the high-speed air flow enters the air inlet pipe, the air flow at the end far from the air inlet pipe flows back and flows out from the first air duct, increasing the wind force at the position far from the air inlet pipe. The air flow flows out through multiple air ducts in the uniform flow air cavity, and the air outlet is uniform. In other words, it provides a technical solution that can make the air outlet of the air knife with end air inlet relatively uniform, but it can only overcome the gradually decreasing pressure difference along the air flow direction and cannot be used for the uneven air speed caused by the air inlet flow pattern. In other words, its technical solution cannot make the air outlet of air knives with other air inlet methods uniform, especially cannot be used for air knives with the same air outlet direction and air inlet direction.

[0005] Therefore, it is an urgent technical problem in the field to provide an air knife that can be used for other air inlet methods and can make the wind speed distribution uniform in the non-air flow direction. Summary of the Utility Model

[0006] In view of the existing phenomenon, the utility model provides an air knife with uniform air outlet, which solves at least one of the above technical problems.

[0007] The technical solution provided by this application is an air knife with uniform air outlet, including: an air knife body, an air nozzle plate and a wind uniforming plate; the air knife body is provided with an air inlet, the air nozzle plate is connected to the air knife body, and the air nozzle plates adjacent in the width direction form an air outlet; the wind uniforming plate is arranged on the air knife body and includes a porous structure for disturbing the air flow inside the air knife body.

[0008] Preferably, a plurality of air distribution plates are provided.

[0009] Preferably, the pore diameter of the porous structure in the plurality of air distribution plates decreases as it approaches the air nozzle plate.

[0010] Preferably, the air distribution plate is provided with a blocking portion that does not have a porous structure and is used to block the airflow from the air inlet.

[0011] Preferably, the air knife body includes an airtight connection portion corresponding to the shape of the air nozzle plate and used to connect the air nozzle plate to improve the airtightness of the connection.

[0012] Preferably, the air distribution plate is arranged on the airtight connection portion.

[0013] Preferably, the cross-section of the air nozzle plate in the vertical length direction is an arc curved towards the inside of the air knife body.

[0014] Preferably, the air knife body includes a mounting groove, and the air distribution plate is detachably arranged in the mounting groove.

[0015] Preferably, the air knife body includes a main body plate member and two detachable end plate members.

[0016] Preferably, the end of the air nozzle plate in the length direction includes a connecting block, and the end plate member is provided with a connecting hole for the connecting block to connect.

[0017] The beneficial effects of this application are at least as follows:

[0018] This application provides an air knife with uniform air output. By providing an air distribution plate, the air knife of this application can disturb the airflow inside the air knife body, disperse the large incoming air stream into multiple small air streams, and these small air streams recombine after passing through the pores. Due to the dispersion effect of the pores, the air flow velocities in all directions tend to be consistent, ultimately improving the uniformity of the overall flow velocity.

[0019] The significance of improving the air outlet uniformity of the air knife is reflected in multiple dimensions: First, a uniform wind force distribution means that each part can receive the same degree of treatment. Whether it is removing moisture or dust, a balanced and consistent effect can be achieved, which is crucial for ensuring the appearance quality of products, preventing local moisture absorption or contamination. Especially in industries such as electronics, food packaging, and automotive manufacturing, any slight quality difference may affect the performance and market acceptance of the final product. Second, a uniform air flow can complete the drying or cleaning tasks more quickly and thoroughly, reducing repeated operations caused by uneven treatment, thereby shortening the production cycle, increasing the processing volume of products per unit time, and bringing higher production capacity and economic benefits to the factory. Third, an air knife with uniform air outlet can more precisely control the required wind force, avoiding excessive or insufficient energy consumption, which conforms to the concept of green production. Fourth, the uniform wind force output reduces unnecessary stress and wear inside the equipment, helps to maintain the stable operation state of the air knife and the supporting system, extends the overall service life of the equipment, reduces the maintenance and replacement frequency, and further reduces the operating cost. Fifth, an air knife system with high uniformity is easier to fine-tune parameters according to different production requirements. Whether facing the application of new materials or the development of new products, it can quickly adapt and optimize the process flow. In short, improving the air outlet uniformity of the air knife is a key factor in achieving high-quality, high-efficiency, and sustainable production. It is not only directly related to the improvement of production efficiency but also an indispensable technical support in the modern and intelligent production mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings incorporated herein and constituting a part of this specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. In these drawings, like reference numerals are used to represent like elements. The drawings in the following description are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a cross-sectional schematic diagram of an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of the air distribution plate 3 of an embodiment of the present invention;

[0023] Figure 3 is a three-dimensional schematic diagram of an embodiment of the present invention;

[0024] Figure 4 is an end face schematic diagram of an embodiment of the present invention;

[0025] Reference numerals:

[0026] Air inlet pipe 100;

[0027] Air knife main body 1; airtight connection part 11; main body plate 12; end plate 13; connection hole 131; installation groove 14; air nozzle plate 2; connection block 21; air distribution plate 3; porous structure 31; blocking part 32. Specific implementation mode

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0029] In the description of the present application, unless otherwise clearly defined and limited, the terms "connected", "connected to" and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0031] In the description of this implementation mode, the orientation or positional relationships such as "above", "below", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0032] Please refer to Figures 1-4, a specific embodiment of a blower knife with uniform air outlet provided by this application includes: a blower knife main body 1, a nozzle plate 2, and a flow-equalizing plate 3; the blower knife main body 1 is provided with an air inlet, the air inlet is connected to an air inlet pipe 100, the nozzle plate 2 is connected to the blower knife main body 1, and adjacent nozzle plates 2 in the width direction form an air outlet; the flow-equalizing plate 3 is arranged on the blower knife main body 1 and includes a porous structure 31 for disturbing the airflow inside the blower knife main body 1.

[0033] By setting the flow-equalizing plate 3, the blower knife of this application can disturb the airflow inside the blower knife main body 1, disperse the large incoming airflows into multiple small airflows, and these small airflows recombine after passing through the pores. Due to the dispersion effect of the pores, the airflow velocities in all directions tend to be consistent, ultimately improving the uniformity of the overall flow velocity. The flow-equalizing plate 3 with the porous structure 31 has a simple structure and is easy to be arranged inside the blower knife main body 1.

[0034] The significance of improving the air outlet uniformity of the blower knife is reflected in multiple dimensions: First, a uniform wind force distribution means that each part can receive the same degree of treatment. Whether it is removing moisture or dust, a balanced and consistent effect can be achieved, which is crucial for ensuring the appearance quality of the product and preventing local moisture or contamination. Especially in industries such as electronics, food packaging, and automotive manufacturing, any slight quality difference may affect the performance and market acceptance of the final product. Second, a uniform air current can complete the drying or cleaning task more quickly and thoroughly, reducing repetitive operations caused by uneven treatment, thereby shortening the production cycle, increasing the processing volume of products per unit time, and bringing higher production capacity and economic benefits to the factory. Third, a blower knife with uniform air outlet can more precisely control the required wind force, avoiding excessive or insufficient energy consumption, which conforms to the concept of green production. Fourth, the uniform wind force output reduces unnecessary stress and wear inside the equipment, helps maintain the stable operation state of the blower knife and the supporting system, extends the overall service life of the equipment, reduces the maintenance and replacement frequency, and further reduces the operating cost. Fifth, a blower knife system with high uniformity is easier to fine-tune parameters according to different production requirements. Whether it is facing the application of new materials or the development of new products, it can quickly adapt and optimize the process flow. In short, improving the air outlet uniformity of the blower knife is a key factor in achieving high-quality, high-efficiency, and sustainable production. It not only directly relates to the improvement of production efficiency but also is an indispensable technical support in the modern and intelligent production mode.

[0035] Furthermore, setting multiple flow-equalizing plates 3 can increase the disturbing effect and make the air outlet more uniform. However, the more flow-equalizing plates 3 there are, the greater the resistance generated. The number of flow-equalizing plates 3 should be selected according to the usage requirements.

[0036] Further, making the pore diameter of the porous structure 31 in the plurality of air distribution plates 3 decrease as it approaches the air nozzle plate 2 can cause the air distribution plates 3 to perform turbulent flow on the air flow in a step-by-step enhanced manner, reducing resistance and improving the air distribution efficiency while fully exerting the turbulent flow effect.

[0037] As Figure 1 , in this embodiment, two air distribution plates 3 are provided. The upper air distribution plate 3 is close to the air inlet and has a larger pore diameter, and the lower air distribution plate 3 is close to the air outlet and has a smaller pore diameter.

[0038] In this embodiment, the cross-section of the air nozzle plate 2 in the vertical length direction is an arc curved towards the inside of the air knife body 1. Setting the cross-section of the air nozzle plate 2 in the vertical length direction to be an arc curved towards the inside of the air knife body 2 is beneficial to reducing the resistance at the air outlet.

[0039] As Figure 1 , in this embodiment, the air knife body 1 includes an airtight connection portion 11 having a shape corresponding to that of the air nozzle plate 2 and used for connecting the air nozzle plate 2 to improve the airtightness of the connection. Specifically, the air nozzle plate 2 has an installation plane, and the air knife body 1 has an inward convex structure that fits and connects with the installation plane, and this inward convex structure is the airtight connection portion 11. The airtight connection portion 11 is used to improve the airtightness of the connection between the air knife body 1 and the air nozzle plate 2, so as to avoid air leakage at the connection between the separately arranged air knife body 1 and the air nozzle plate 2 from affecting the uniformity of the air outlet.

[0040] As Figure 1 , in this embodiment, the air distribution plate 3 is arranged on the airtight connection portion 11. Arranging the air distribution plate 3 on the airtight connection portion 11 can make the air distribution plate 3 in a position relatively close to the air nozzle plate 2, so that the air flow passing through the air distribution plate 3 is directly gathered and blown out through the air nozzle plate 2, which is beneficial to improving the air distribution efficiency.

[0041] As Figure 2 , in this embodiment, the air distribution plate 3 is provided with a blocking portion 32 that does not have a porous structure 31 and is used to block the air flow from the air inlet. In this embodiment, the air inlet and the air outlet direction are the same. If the blocking portion 32 is not provided, the incoming air flow will directly rush towards the air outlet through the hole structure opposite to the air inlet, resulting in poor air distribution effect of the air distribution plate 3. Setting the blocking portion 31 is beneficial to better air distribution in the working scenario where the air inlet and the air outlet directions are the same.

[0042] In this embodiment, the air knife body 1 includes an installation groove 14, and the air distribution plate 3 is detachably arranged in the installation groove 14. Arranging the air distribution plate 3 in this way enables it to be quickly disassembled and assembled, facilitating the replacement of air distribution plates 3 of different specifications according to the usage needs. In other embodiments, the installation groove 14 can be arranged at multiple different positions to adjust the position of the installation plate as needed.

[0043] As Figure 3, in this embodiment, the air knife body 1 includes a main body plate member 12 and two detachable end plate members 13. Pulling out the end plate member 13 outward can quickly disassemble the air knife body 1. The split structure can make the air knife easier to overhaul or replace the air distribution plate 3, and it is convenient to set the main body plate member 12 and the end plate member 13 as plate members with simple shapes. It is more convenient to process when manufacturing this air knife, reducing costs.

[0044] Such as Figure 4 , in this embodiment, the end of the air nozzle plate 2 in the length direction further includes a connecting block 21, and the end plate member 13 is provided with a connecting hole 131 for connecting the connecting block 21. Fixing the end of the air nozzle plate 2 to the end plate member 13 can support the end of the air nozzle plate 2, which is beneficial to improving stability and airtightness, and at the same time is also convenient for disassembling the air nozzle plate 2.

[0045] The content described above can be implemented alone or in various combinations, and these variant ways are all within the protection scope of the present utility model.

[0046] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0047] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific embodiments of the present utility model are only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or replacements can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. An air knife with uniform air outlet, characterized in that, Including: An air knife main body (1), an air nozzle plate (2) and an air distribution plate (3); the air knife main body (1) is provided with an air inlet, the air nozzle plate (2) is connected to the air knife main body (1), and the air nozzle plates (2) adjacent in the width direction form an air outlet; the air distribution plate (3) is arranged on the air knife main body (1) and includes a porous structure (31) for disturbing the air flow inside the air knife main body (1).

2. The air knife according to claim 1, wherein A plurality of the air distribution plates (3) are provided.

3. The air knife according to claim 2, characterized in that, The aperture of the porous structure (31) in the plurality of air distribution plates (3) decreases as it approaches the air nozzle plate (2).

4. The air knife according to claim 1, wherein The air distribution plate (3) is provided with a blocking portion (32) that does not have a porous structure (31) and is used to block the air flow from the air inlet.

5. The air knife according to claim 1, characterized in that, The air knife main body (1) includes an airtight connection portion (11) corresponding to the shape of the air nozzle plate (2) and used to connect the air nozzle plate (2) to improve the airtightness of the connection.

6. The air knife according to claim 5, characterized in that, The air distribution plate (3) is arranged on the airtight connection portion (11).

7. The air knife according to claim 1, wherein The cross-section of the air nozzle plate (2) in the vertical length direction is an arc curved towards the inside of the air knife main body (1).

8. The air knife according to any one of claims 1-7, characterized in that, The air knife main body (1) includes a mounting groove (14), and the air distribution plate (3) is detachably arranged in the mounting groove (14).

9. The air knife according to claim 8, characterized in that, The air knife main body (1) includes a main body plate member (12) and two detachable end plate members (13).

10. The air knife according to claim 9, characterized in that, The end of the air nozzle plate (2) in the length direction includes a connection block (21), and the end plate member (13) is provided with a connection hole (131) for connecting the connection block (21).

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