Novel groove type air knife

Abstract

The utility model relates to the technical field of air knife devices, in particular to a novel groove type air knife. The novel groove type air knife comprises an air knife nozzle, a shell and an air inlet pipe, a cavity used for containing high-pressure gas is formed in the shell, the shell is provided with a connecting part matched with the air knife nozzle and the air inlet pipe, the air knife nozzle and the air inlet pipe are installed on the shell, a plurality of air outlets are formed in the air knife nozzle and are in a groove hole shape, and the air inlet pipe is connected with the air knife nozzle. The length direction of the air outlets is consistent with the length direction of the air knife mouth, and the multiple air outlets are evenly distributed in the length direction of the air knife mouth. The air outlet device has the effects of improving the air outlet efficiency, making the air outlet airflow more uniform and remarkably reducing noise.

Description

Technical Field

[0001] The present application relates to the technical field of air knife devices, and in particular to a novel slot-type air knife. Background Art

[0002] Air knife technology plays a crucial role in today's electronics manufacturing industry, particularly in the surface treatment of printed circuit boards (PCBs). Air knife technology primarily generates high-speed airflow to forcefully remove moisture from the workpiece surface, effectively preventing oxidation of the finished boards. This function is crucial for ensuring the quality and performance stability of the PCBs. With the rapid development of electronic products towards miniaturization and higher density, the design and manufacture of PCBs have become increasingly sophisticated, placing even more stringent demands on air knife technology.

[0003] During the production process of printed circuit boards, holes of various sizes often form on their surfaces. These small holes easily trap moisture. To completely dry out the moisture in these holes, high air pressure is typically required to drive high-speed airflow. During this process of increasing air pressure, air knives often generate significant noise. This noise problem not only severely disrupts the production environment, affecting operator comfort and concentration, but can also adversely affect the normal operation of surrounding equipment.

[0004] Therefore, based on the above problems, the existing technology needs to be improved. Utility Model Content

[0005] The purpose of this application is to provide a new type of slotted air knife to improve the use effect of the air knife.

[0006] The above-mentioned technical purpose of the present application is achieved through the following technical solutions: a new type of slot-type air knife, including a wind knife nozzle, a shell and an air inlet pipe, a cavity for accommodating high-pressure gas is formed inside the shell, and has a connection part adapted to the wind knife nozzle and the air inlet pipe, the wind knife nozzle and the air inlet pipe are installed on the shell, and a plurality of air outlets are provided on the wind knife nozzle, the air outlets are in the shape of slot holes, the length direction of the air outlets is consistent with the length direction of the wind knife nozzle, and the plurality of air outlets are evenly distributed along the length direction of the wind knife nozzle.

[0007] This technical solution effectively improves the removal of moisture from workpiece surfaces, particularly those on circuit boards and within their cavities. This allows for more thorough drying, preventing oxidation and ensuring the quality and performance stability of the boards. This results in a more even airflow, reducing noise caused by turbulent airflow. Multiple air outlets are evenly distributed along the length of the air knife nozzle, further optimizing airflow distribution and reducing noise.

[0008] Optionally, several of the air outlets are staggered in double rows.

[0009] By adopting this technical solution, the dual-row air outlet increases the air knife's air outlet area, generating a more powerful airflow and further improving the efficiency of removing moisture from the workpiece surface, especially from small holes on circuit boards. The staggered arrangement makes the airflow more dispersed and uniform, avoiding turbulence and noise caused by excessive localized airflow concentration, thereby helping to reduce the noise level during air knife operation. The double-row staggered design also makes the air knife's air outlet more flexible and diverse, able to adapt to workpiece surfaces of different shapes and sizes, improving the air knife's versatility and applicability.

[0010] Optionally, the length of the air outlet is 3mm~30mm.

[0011] By adopting the above technical solution, the length range can be adjusted according to different application scenarios and workpiece requirements, with high flexibility. For smaller workpieces or areas that require delicate drying, a shorter air outlet length can be selected to concentrate the airflow and improve the drying effect; for larger workpieces or situations where a large area needs to be dried, a longer air outlet length can be selected to increase the air outlet coverage. A reasonable air outlet length can ensure sufficient airflow intensity while avoiding excessive air outlets that cause excessive airflow dispersion and affect drying efficiency. At the same time, this length range can play a positive role in reducing noise, improving air knife stability, and ensuring that the air knife can operate efficiently and reliably under different working conditions.

[0012] Optionally, the air knife nozzle is made of stainless steel.

[0013] By adopting this technical solution, stainless steel exhibits excellent corrosion resistance, maintaining stable performance in a variety of harsh working environments and extending the life of the air knife nozzle. Furthermore, stainless steel's high strength allows it to withstand the impact of high-pressure gas without deformation, ensuring a stable shape and size of the air outlet, thereby ensuring uniform and stable airflow and improving moisture removal efficiency. Furthermore, stainless steel's smooth surface resists dust and impurities, making it easy to clean and maintain, helping to keep the air knife in good working condition.

[0014] Optionally, the shell is made of high-strength stainless steel.

[0015] By adopting the above technical solution, high-strength stainless steel has excellent mechanical properties. Its high strength and good toughness can effectively withstand the pressure generated by high-pressure gas in the shell, ensuring that the shell will not be deformed, cracked or damaged during long-term use, thereby ensuring the stability and safety of the entire air knife structure and providing a solid and reliable foundation for the continued normal operation of the air knife. Secondly, the corrosion resistance of stainless steel enables it to resist corrosive factors such as chemicals and water vapor that may be exposed in various complex working environments, greatly extending the service life of the shell, reducing equipment failures and maintenance costs caused by corrosion, and improving the overall durability and reliability of the air knife, enabling it to adapt to more stringent working conditions. Furthermore, the surface of stainless steel is smooth and easy to clean, which helps to keep the appearance of the air knife neat and tidy, while reducing the possibility of impurities adhering to a certain extent, indirectly facilitating the smooth flow of airflow inside the air knife, ensuring the stable performance of the air knife, and ensuring that it can continue to work stably in application scenarios with high cleanliness requirements such as circuit board manufacturing, providing strong support for improving product quality and production efficiency.

[0016] Optionally, the air inlet pipe is made of stainless steel.

[0017] By adopting the above technical solution, the stainless steel material has excellent corrosion resistance and can effectively resist the influence of various corrosive factors in the external environment, ensuring that the air inlet pipe will not be damaged by corrosion during long-term use, thereby extending the service life of the air inlet pipe. The high strength of stainless steel enables the air inlet pipe to withstand the pressure of high-pressure gas delivery without deformation, ensuring the stability and reliability of gas delivery. At the same time, the surface of stainless steel is smooth and not prone to fouling, which can reduce the resistance of gas during the delivery process and improve the efficiency of the air knife. In addition, the stainless steel air inlet pipe also has excellent sealing properties, which can effectively prevent gas leakage and ensure the normal operation of the air knife system.

[0018] Optionally, a sealing ring is mounted on the air inlet pipe.

[0019] By implementing this technical solution, the sealing ring strengthens the seal between the air inlet duct and the connection, preventing high-pressure gas leakage and ensuring sufficient air pressure inside the air knife, thereby ensuring effective air delivery and drying efficiency. This excellent sealing performance reduces noise generated by gas leakage, creating a quieter working environment for the production environment. The sealing ring also acts as a shock absorber, reducing vibration during operation and improving the stability and reliability of the air knife. The sealing ring prevents foreign matter from entering the air inlet duct, protecting the internal structure of the air knife from contamination and damage, and extending the service life of the air knife.

[0020] Optionally, the sealing ring is made of rubber.

[0021] By adopting this technical solution, the rubber possesses excellent elasticity and sealing properties, allowing it to fit tightly between the air inlet duct and the connection, effectively preventing high-pressure gas leakage. The rubber sealing ring can adapt to varying temperature and pressure fluctuations, maintaining a stable sealing performance. The rubber's softness acts as a buffer, reducing vibration and wear at the connection point of the air inlet duct, thereby extending the service life of the air inlet duct. The rubber sealing ring is low-cost and easy to install and replace, improving the convenience and cost-effectiveness of the air knife.

[0022] In summary, this application has at least the following beneficial effects:

[0023] 1. It effectively removes moisture from workpiece surfaces, especially those on circuit boards and within holes. It achieves a more thorough drying effect, preventing oxidation and ensuring the quality and performance stability of the boards. It also provides a more even airflow, reducing noise caused by turbulent airflow. Multiple air outlets are evenly distributed along the length of the air knife nozzle, further optimizing airflow distribution and reducing noise.

[0024] 2. The double-row staggered setting of the air outlet, the specific length range, and the use of stainless steel materials for all components increase the air outlet area and flexibility of the air knife, improve its versatility and applicability, and also enhance its strength and durability.

[0025] 3. A rubber sealing ring is installed on the air inlet pipe to enhance the sealing of the air knife, reduce the noise caused by gas leakage, play a shock-absorbing role, reduce the vibration of the air knife, prevent external impurities from entering, protect the internal structure of the air knife, extend its service life, and improve its convenience and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of a new type of slotted air knife;

[0027] Figure 2 This is a cross-sectional view of a new type of slotted air knife;

[0028] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0029] Reference numerals

[0030] 1. Air knife nozzle; 2. Shell; 3. Air inlet pipe; 4. Cavity; 5. Air outlet. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] In this embodiment, referring to Figure 1 A new type of slot-type air knife comprises a wind knife nozzle 1, a shell 2 and an air inlet pipe 3, wherein a cavity 4 for accommodating high-pressure gas is formed inside the shell 2, and has a connection part adapted to the wind knife nozzle 1 and the air inlet pipe 3, the wind knife nozzle 1 and the air inlet pipe 3 are installed on the shell 2, and the wind knife nozzle 1 is provided with a plurality of air outlets 5, the air outlets 5 are in the shape of a slot, the length direction of the air outlet 5 is consistent with the length direction of the wind knife nozzle 1, and the plurality of air outlets 5 are evenly distributed along the length direction of the wind knife nozzle 1, thereby achieving the effect of improving the air outlet efficiency while making the air outlet airflow more uniform and significantly reducing noise.

[0034] Specifically, the wind knife nozzle 1 is made of stainless steel material, and a plurality of air outlets 5 are provided on the wind knife nozzle 1. The air outlet 5 is in the shape of a slot, and the length direction is consistent with the length direction of the wind knife nozzle 1, and the plurality of air outlets 5 are evenly distributed along the length direction of the wind knife nozzle 1. The length of the air outlet 5 can be 3mm~30mm. The width of the air outlet 5 can be adjusted according to actual needs. The uniform distribution of multiple air outlets 5 and the design of the slot shape enable the airflow to form a continuous and stable airflow at the outlet of the wind knife nozzle 1, effectively eliminating the problems of uneven spacing between the hole-type wind knife holes and low air outlet efficiency. At the same time, the design of the slot shape reduces the possibility of resonance and significantly reduces the noise level.

[0035] Specifically, housing 2 is made of high-strength stainless steel, ensuring durability and corrosion resistance. Connections are located at both ends of housing 2, aligning with air nozzle 1 and air inlet pipe 3 to ensure airtightness. Cavity 4 is used to accommodate high-pressure gas, ensuring a stable supply of airflow.

[0036] Specifically, the air inlet pipe 3 is made of stainless steel with a smooth inner wall, which reduces airflow resistance and has good thermal conductivity and corrosion resistance. Preferably, the surface of the inner wall of the air inlet pipe 3 can be coated with an anti-rust coating to prevent metal oxidation and extend the service life. The material of the anti-rust coating can be epoxy resin or fluorocarbon paint, which has good weather resistance and corrosion resistance. The stainless steel material and smooth inner wall design of the air inlet pipe 3 reduce airflow resistance and improve the stability and efficiency of the airflow. The setting of the sealing ring ensures airtightness, prevents airflow leakage, and improves the overall performance of the wind knife. Preferably, the wind knife nozzle 1, the shell 2 and the air inlet pipe 3 are integrally formed.

[0037] Specifically, a sealing ring is mounted on the air inlet pipe 3. The sealing ring is made of rubber to ensure good sealing performance. The cross-sectional shape of the sealing ring can be O-shaped, D-shaped, or other geometric shapes. The specific shape can be determined according to actual needs. The thickness of the sealing ring can be selected according to actual needs.

[0038] The implementation principle of this embodiment is as follows: the new slot-type air knife of this embodiment achieves uniformity of air flow and low noise effect by optimizing the structural design of the air knife nozzle 1, the shell 2 and the air inlet pipe 3. The air outlet 5 on the air knife nozzle 1 adopts a slot shape, and the length direction is consistent with the length direction of the air knife nozzle 1, and several air outlets 5 are evenly distributed along the length direction of the air knife nozzle 1, ensuring the uniformity and stability of the airflow. The shell 2 is made of high-strength stainless steel material, which ensures the overall durability and corrosion resistance of the air knife. The air inlet pipe 3 is made of stainless steel with a smooth inner wall, which reduces the airflow resistance. The setting of the sealing ring ensures airtightness and prevents airflow leakage. In summary, the new slot-type air knife of this embodiment has the advantages of high air outlet efficiency, uniform air flow, low noise, strong durability and easy maintenance, which significantly improves the surface production efficiency of the circuit board.

[0039] Example 2

[0040] The difference between this embodiment and the above embodiment is that the plurality of air outlets 5 are staggered in two rows.

[0041] Specifically, the air outlet 5 is in the shape of a long slot with smooth edges and no burrs. The double rows of staggered air outlets 5 can ensure uniform distribution of airflow, reduce overlap and interference of airflow, improve air outlet efficiency and reduce noise.

[0042] The working principle of this embodiment is as follows: The new slotted air knife of this embodiment achieves uniform airflow and low noise by optimizing the structural design of the air knife nozzle 1, housing 2, and air inlet pipe 3. The air outlets 5 on the air knife nozzle 1 are arranged in a double row with staggered positions, further improving the uniformity and stability of the airflow.

[0043] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A new type of slotted air knife, characterized in that: The invention comprises a wind knife nozzle (1), a shell (2) and an air inlet pipe (3); a cavity (4) for accommodating high-pressure gas is formed inside the shell (2), and the shell has a connection portion adapted to the wind knife nozzle (1) and the air inlet pipe (3); the wind knife nozzle (1) and the air inlet pipe (3) are mounted on the shell (2); a plurality of air outlets (5) are provided on the wind knife nozzle (1); the air outlets (5) are in the shape of slots; the length direction of the air outlets (5) is consistent with the length direction of the wind knife nozzle (1), and the plurality of air outlets (5) are evenly distributed along the length direction of the wind knife nozzle (1).

2. A new type of slotted air knife according to claim 1, characterized in that: The plurality of air outlets (5) are staggered in double rows.

3. A new type of slotted air knife according to claim 1, characterized in that: The length of the air outlet (5) is 3 mm to 30 mm.

4. A new type of slotted air knife according to claim 1, characterized in that: The air knife nozzle (1) is made of stainless steel.

5. A new type of slotted air knife according to claim 1, characterized in that: The housing (2) is made of high-strength stainless steel.

6. A new type of slotted air knife according to claim 1, characterized in that: The air inlet pipe (3) is made of stainless steel.

7. A new type of slotted air knife according to claim 1, characterized in that: A sealing ring is sleeved on the air inlet pipe (3).

8. A new type of slotted air knife according to claim 7, characterized in that: The sealing ring is made of rubber material.

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