A discharge needle mounting base for increasing airflow velocity

Abstract

A discharge needle mounting base for improving airflow velocity includes a base and a connecting portion formed on the lower side of the base. The base has a chamber at its end away from the connecting portion. A pressurized chamber is disposed inside the connecting portion. A mounting hole for mounting a discharge needle is formed above the bottom of the chamber, and the mounting hole connects the chamber and the pressurized chamber, allowing both ends of the discharge needle to extend out of the chamber and the pressurized chamber respectively. At least three air outlets are also provided around the mounting hole at the bottom of the chamber. Each air outlet includes an outlet end and an inlet end, with the diameter of the outlet end being smaller than the diameter of the inlet end. In this technical solution, because the diameter of the inlet end is larger than the diameter of the outlet end, air can be ejected at a higher velocity after being ejected from the outlet end, thereby increasing the velocity at which ions are blown towards the workpiece and quickly performing static electricity removal on the workpiece.

Description

Technical Field

[0001] This utility model relates to the field of static electricity elimination technology, and in particular to a discharge needle mounting base for increasing airflow velocity. Background Technology

[0002] In the electronics industry, static electricity is a significant factor that can cause potential failures of sensitive electronic components and reduce electronic reliability. Therefore, the requirements for static electricity protection in the electronics industry are constantly increasing, and reducing and eliminating static electricity has become an important task for industrial electronics and related industries.

[0003] An electrostatic eliminator is a device used to eliminate static electricity. It works by using a discharge needle to generate corona discharge, which then blows a cloud of ions onto the workpiece, neutralizing the static electricity and thus eliminating it. Currently, ion air bars are a common type of electrostatic eliminator on the market. These bars have discharge needles installed on them. When high voltage is applied to the discharge needles, the tips undergo corona discharge, ionizing the static electricity. For example, Chinese utility model patent application CN208739459U (a type of ventilated electrostatic eliminator) uses a method where the discharge needle is installed inside an air nozzle. A probe is electrically connected to the air nozzle mounting plate, energizing the discharge needle and enabling corona discharge.

[0004] In the above scheme, the airflow velocity of the static eliminator is limited by the structure of the air nozzle, and its velocity is relatively low, which cannot form a mass of air carrying charged ions to quickly blow out and eliminate static electricity from the workpiece. Utility Model Content

[0005] The purpose of this invention is to provide a discharge needle mounting base that improves airflow velocity, thereby overcoming the defects mentioned in the background art.

[0006] A discharge needle mounting base for increasing airflow velocity includes a base and a connecting portion formed on the lower side of the base. The base has a chamber at its end away from the connecting portion. A pressurized chamber is disposed inside the connecting portion. A mounting hole for mounting a discharge needle is provided above the bottom of the chamber, and the mounting hole connects the chamber and the pressurized chamber, allowing both ends of the discharge needle to extend out of the chamber and the pressurized chamber respectively. At least three air outlets are also provided around the mounting hole at the bottom of the chamber. Each air outlet includes an outlet end and an inlet end, with the diameter of the outlet end being smaller than the diameter of the inlet end.

[0007] Furthermore, the vertical cross-sections of the air inlet and the air outlet are rectangular.

[0008] Furthermore, a confluence section is provided at the top of the air intake end, and the diameter of the confluence section gradually decreases from the air intake end toward the air outlet end.

[0009] Furthermore, a mounting platform is formed at the bottom of the chamber, the mounting hole is formed within the mounting platform, and the mounting platform has a frustum structure that is narrower at the top and wider at the bottom, with at least three air outlets equally spaced around the mounting platform.

[0010] Furthermore, the angle between the sidewall of the manifold and the bottom of the chamber is greater than the angle between the sidewall of the mounting platform and the bottom of the chamber.

[0011] Furthermore, the vertical cross-section of the mounting hole is an isosceles trapezoid that is narrower at the top and wider at the bottom.

[0012] Furthermore, the seat body comprises an upper part, a middle part, and a lower part from top to bottom. The cavity is formed in the upper part and the middle part, and the middle part has a plurality of equally spaced side air vents along the circumferential direction. The side air vents penetrate the thickness of the middle part and communicate with the cavity.

[0013] Furthermore, the height of the middle section is greater than the height of the mounting platform.

[0014] Furthermore, a number of equally spaced protrusions are formed on the upper circumferential surface.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a discharge needle mounting base for increasing airflow velocity. Its connecting part is mounted on an ionizer bar, causing the base to protrude from the ionizer bar. A discharge needle, electrically connected to a high-voltage component, extends from the mounting hole, protruding from the chamber. Its end is used to discharge and ionize the air. The pressurized chamber is connected to the air duct in the ionizer bar, allowing high-pressure gas from the air duct to enter the pressurized chamber and be ejected through the outlet. During the static elimination process, the discharge needle end has high voltage, discharging and ionizing the air. The high-pressure gas in the air duct enters the pressurized chamber and is ejected through the outlet, forming a high-speed airflow that directs the ionized gas mass towards the workpiece. The airflow is ejected in a specific direction to remove static electricity from the workpiece. As the airflow is ejected along the air outlet, the diameter of the outlet end is smaller than that of the inlet end. Therefore, the airflow velocity increases when passing through the smaller diameter outlet end, and the airflow is scattered in the circumferential direction of the outlet end during ejection, thus forming a funnel-shaped high-speed airflow. The airflow is simultaneously blown through at least three equally spaced air outlets surrounding the discharge needle, which can blow all the ionized ions toward the workpiece. The technical solution provided by this utility model can increase the airflow velocity and the high-speed air mass formed can carry more ions toward the workpiece, thereby improving the efficiency of static removal.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a three-dimensional sectional view of the present invention.

[0020] Figure 3 This is a cross-sectional view of the present invention from a frontal perspective. Detailed Implementation

[0021] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, the use of terms such as "first" and "second" in the embodiments of this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0024] This utility model embodiment provides a discharge needle mounting base for increasing airflow velocity, which is used to assemble onto an ion bar. The discharge needle is installed in the mounting hole of the chamber 110, with one end extending out of the chamber 110 and the other end extending out of the pressurization chamber 210, and abutting against the high-voltage component on the ion bar to achieve electrical connection. The pressurization chamber 210 is interconnected with the air duct of the bar, so that high-pressure gas can be discharged through the air outlet 120 to blow the ionized ions from the discharge needle onto the workpiece surface to eliminate static electricity. During the gas ejection process, the gas is pressurized through the pressurization chamber 210 and then passes through the air inlet 122 of the air outlet 120. Since the diameter of the air inlet 122 is larger than the diameter of the air outlet 121, the air can be ejected at a higher flow rate after being ejected from the air outlet 121, thereby increasing the flow rate of the ions blown onto the workpiece and quickly eliminating static electricity from the workpiece.

[0025] Specifically, such as Figure 1-3 As shown, this utility model embodiment provides a discharge needle mounting base for improving airflow velocity, including a base 100 and a connecting portion 200 formed on the lower side of the base 100. A chamber 110 is formed at the end of the base 100 away from the connecting portion 200. A pressurizing chamber 210 is provided inside the connecting portion 200. A mounting hole for mounting a discharge needle is also provided above the bottom of the chamber 110, and the mounting hole connects the chamber 110 and the pressurizing chamber 210 to each other, so that both ends of the discharge needle extend out of the chamber 110 and the pressurizing chamber 210 respectively. At least three air outlets 120 are also provided around the mounting hole at the bottom of the chamber 110. Each air outlet 120 includes an air outlet end 121 and an air inlet end 122. The diameter of the air outlet end 121 is smaller than the diameter of the air inlet end 122.

[0026] During installation with the ion bar, the connecting part 200 is mounted on the ion bar, causing the base 100 to protrude from the ion bar. The discharge needle, electrically connected to the high-voltage component, extends from the mounting hole, protruding from the chamber 110. Its end is used to discharge and ionize the air. The pressurized chamber 210 is connected to the air duct in the ion bar, allowing high-pressure gas from the air duct to enter the pressurized chamber 210 and be ejected from the outlet 120. During the static elimination operation of the ion bar, the discharge needle tip has high voltage, which discharges and ionizes the air. After the high-pressure gas in the air duct enters the pressurized chamber 210, it is ejected from the outlet 120, forming a high-speed airflow that propels the ionized gas cloud towards the workpiece. When performing static electricity removal on a workpiece, as the airflow is ejected along the air outlet 120, the airflow velocity increases as the air outlet 121 is smaller than the air inlet 122. During ejection from the air outlet 121, the airflow is scattered circumferentially towards the outlet 121, forming a high-speed, trumpet-shaped airflow. This airflow is simultaneously blown through at least three equally spaced air outlets 120 surrounding the discharge needle, directing all ionized ions towards the workpiece. This invention improves the airflow velocity and generates a higher-speed air mass carrying more ions towards the workpiece, thus enhancing the efficiency of static electricity removal.

[0027] In this embodiment, the vertical cross-sections of the air inlet 122 and the air outlet 121 are designed as rectangles, that is, cylindrical structures, so as to increase the air output during the gas ejection process.

[0028] like Figure 2-3 As shown, in order to increase the airflow velocity during the ejection process at the outlet 121, a confluence section 123 is also provided at the top of the inlet 122. The diameter of the confluence section 123 gradually decreases from the inlet 122 toward the outlet 121. That is, the return section has a frustum structure that is wider at the bottom and narrower at the top. The high-pressure gas located inside the pressurization chamber 210 enters the outlet hole at the inlet 122. Since the diameter of the confluence section 123 gradually decreases, the airflow velocity gradually increases during the process of passing through the confluence section 123 and the outlet 121, and reaches the maximum velocity at the outlet 121, so that it is ejected at the outlet 121.

[0029] To enhance the stability of the discharge needle's mounting position and to enable the ionized ions to be delivered to the workpiece more quickly and with greater ion carrying capacity, a mounting platform 112 is formed at the bottom of the chamber 110. The mounting hole is formed within the mounting platform 112, and the mounting platform 112 has a frustum structure that is narrower at the top and wider at the bottom. At least three air outlets 104 are evenly spaced around the mounting platform 112.

[0030] During operation, the end of the discharge needle is positioned above the mounting platform 112, with a slight gap between it and the end of the vent 120. The ions generated after the discharge needle ionizes the air are all located above the vent end. At this time, high-pressure gas is ejected along the vent 120 and diffuses in a trumpet shape. In this embodiment, four vents 120 are provided around the mounting platform 112. In other embodiments, three vents 120 can be provided. Additionally, to increase the gas output, five vents can be provided. In this embodiment, the trumpet-shaped diffused airflow ejected from the four vents 120 converges into a single gas mass. When the high-speed airflow corresponding to the mounting platform 112 ejected along the four vents 120 moves upwards along the surface of the mounting platform 112, all the ions ionized by the discharge needle are carried to the workpiece surface for static electricity removal. It is worth noting that when the mounting platform 112 is not installed, the tip of the discharge needle protrudes from the bottom of the chamber 110. Therefore, in this state, some of the ions ionized by the discharge needle will remain at the bottom of the chamber 110. The high-speed gas ejected from the vent 120 will form a wind-blown area at the bottom of the chamber 110, which is also the area of ​​the discharge needle. In this area, the wind speed is low, so the ions in this area cannot be effectively utilized, thus affecting the utilization rate of ions and the efficiency of static electricity removal.

[0031] In this embodiment, in order to increase the area of ​​the gas cloud formed by the convergence of the four outlet holes and to increase the area covered by ions, the angle between the side wall of the confluence section 123 and the bottom of the chamber 110 is greater than the angle between the side wall of the mounting platform 112 and the bottom of the chamber 110. Taking the bottom of the chamber 110 as a reference plane, the angle between the side wall of the return section and the bottom of the chamber 110 is set to be greater than the angle between the side wall of the mounting platform 112 and the bottom of the chamber 110. At this time, when the airflow is ejected from the outlet hole 120, the angle of the trumpet shape can be increased when it diffuses in a trumpet shape, thereby increasing the diffusion area, increasing the coverage of ions, and thus increasing the amount of ions carried, ensuring that more ions are blown out towards the workpiece.

[0032] In this embodiment, to ensure the stability of the discharge needle installed in the mounting hole, the vertical cross-section of the mounting hole is an isosceles trapezoid, narrower at the top and wider at the bottom. Typically, the discharge needle and the high-voltage component abut against each other to achieve electrical connection. During the abutment process, the discharge needle receives pressure from the high-voltage component, gradually being compressed within the mounting hole, thereby ensuring the stability of the discharge needle within the mounting hole.

[0033] In this embodiment, a specific structure of the seat 100 is given as an example. The seat 100 includes an upper part 101, a middle part 102, and a lower part 103 from top to bottom. A cavity 110 is formed in the upper part 101 and the middle part 102. The middle part 102 has a plurality of equally spaced side air vents 104 along the circumferential direction. The side air vents 104 penetrate the thickness of the middle part 102 and communicate with the cavity 110. By setting the side air vents 104, airflow can be blown out through the side air vents 104, which blows the ions that have moved outside the cavity 110 toward the workpiece, further increasing the amount of ions carried.

[0034] In this embodiment, the height of the central part 102 is greater than the height of the mounting platform 112. At the same time, the height of the side vent 104 is also greater than the height of the mounting platform 112. At this time, most of the ions ionized by the discharge needle are inside the chamber 110, and a small portion moves out of the chamber 110 along the side vent. Since the height of the side vent 104 is greater than that of the mounting platform 112, a portion of the high-pressure airflow is also blown out of the side vent 104, carrying the ions that have moved out of the chamber 110 and blowing them toward the surface of the workpiece.

[0035] To facilitate the installation and removal of the mounting base and the ionizer, several equally spaced protrusions 105 are formed on the circumferential surface of the upper part 101. The mounting base can be removed by rotating it while holding the protrusions 105.

[0036] For those skilled in the art, various other corresponding changes and modifications can be obtained based on the structure and principles disclosed in this utility model, and all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A discharge needle mounting base for increasing airflow velocity, comprising a base and a connecting portion formed on the lower side of the base, characterized in that, The base body has a chamber at the end away from the connecting part. A pressurized chamber is provided inside the connecting part. A mounting hole for installing a discharge needle is also provided above the bottom of the chamber. The mounting hole connects the chamber and the pressurized chamber, so that the two ends of the discharge needle extend out of the chamber and the pressurized chamber respectively. At least three air outlets are also provided around the mounting hole at the bottom of the chamber. Each air outlet includes an air outlet end and an air inlet end. The diameter of the air outlet end is smaller than the diameter of the air inlet end.

2. The discharge needle mounting base for increasing airflow velocity according to claim 1, characterized in that, The vertical cross-sections of the air inlet and the air outlet are rectangular.

3. The discharge needle mounting base for increasing airflow velocity according to claim 1, characterized in that, The top of the air inlet is also provided with a confluence section, the diameter of which gradually decreases from the air inlet to the air outlet.

4. The discharge needle mounting base for increasing airflow velocity according to claim 3, characterized in that, The bottom of the chamber is also provided with a mounting platform, the mounting hole is formed inside the mounting platform, and the mounting platform has a frustum structure that is narrow at the top and wide at the bottom, with at least three air outlets equally spaced around the mounting platform.

5. A discharge needle mounting base for increasing airflow velocity according to claim 4, characterized in that, The angle between the sidewall of the manifold and the bottom of the chamber is greater than the angle between the sidewall of the mounting platform and the bottom of the chamber.

6. The discharge needle mounting base for increasing airflow velocity according to claim 1, characterized in that, The vertical cross-section of the mounting hole is an isosceles trapezoid, narrower at the top and wider at the bottom.

7. A discharge needle mounting base for increasing airflow velocity according to claim 4, characterized in that, The seat body comprises an upper part, a middle part, and a lower part from top to bottom. The cavity is formed in the upper part and the middle part, and the middle part has several equally spaced side air vents along the circumferential direction. The side air vents penetrate the thickness of the middle part and communicate with the cavity.

8. A discharge needle mounting base for increasing airflow velocity according to claim 7, characterized in that, The height of the middle section is greater than the height of the mounting platform.

9. A discharge needle mounting base for increasing airflow velocity according to claim 7, characterized in that, Several equally spaced protrusions are formed on the upper circumferential surface.

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