High frequency precision large atomizing valve

Abstract

The utility model relates to atomization valve equipment technical field especially a kind of high-frequency precision big atomization valve, including valve body shell, atomization needle, atomization striker, striker fixed piston, adjusting screw cap assembly, air inlet, medium inlet and high-frequency air inlet connector. Upper sliding groove, needle assembly groove, atomization medium passage and high-pressure gas passage are equipped in valve body shell. By inputting pulse airflow to high-frequency air inlet connector, striker fixed piston is pushed to overcome spring force and move up, atomization striker is driven to open and eject medium;After cutting off airflow, spring pushes piston and striker to move down rapidly to realize closing and dredging. The core of the present application is to combine high-frequency pneumatic control, striker mechanical dredging and medium circulation loop, effectively solve the problem of easy blockage with particulate medium, while realizing high-frequency, stable, precise atomization effect.

Description

Technical Field

[0001] This utility model relates to the technical field of atomizing valve equipment, and in particular to a high-frequency precision large atomizing valve. Background Technology

[0002] In industrial manufacturing, such as surface coating, electronic packaging, and medical device coating, precision atomization spraying of media such as adhesives, lubricants, and coatings is frequently required. Existing atomizing valves typically suffer from the following problems: for media containing particles, they easily settle at the outlet, leading to blockage; the atomization effect is limited, making it difficult to adjust the atomization width and center concentration; designs using built-in solenoid valves have poor reliability and short lifespan in high-temperature or corrosive environments, and are inconvenient to maintain and replace; furthermore, during high-frequency operation, insufficient valve needle stroke control and sealing stability can easily lead to uneven atomization or leakage.

[0003] Therefore, there is an urgent need for a precision atomizing valve that can achieve stable high-frequency operation, prevent clogging, adjust the atomization effect, and is easy to maintain. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-frequency precision large atomizing valve, the specific technical solution of which is as follows: A high-frequency precision large atomizing valve includes a valve body shell, an atomizing needle, an atomizing striker, a striker fixing piston, an adjusting nut assembly, an air inlet, a medium inlet, and a high-frequency air inlet connector. The valve body shell internally has an upper sliding groove, a needle assembly groove, an atomizing medium channel, and a high-pressure gas channel. The adjusting nut assembly, striker fixing piston, and atomizing striker are arranged sequentially from top to bottom, with the atomizing striker fixedly installed at the lower end of the striker fixing piston. The adjusting nut assembly is located on the upper part of the valve body shell, the striker fixing piston is embedded in the upper sliding groove, and the atomizing needle is embedded in the needle assembly groove. The atomizing needle has a through-hole inner channel in its middle, and its outer side forms an outer channel with the inner side of the needle assembly groove. The atomizing medium channel is connected to the inner channel of the needle. The top of the atomizing needle has a crater-shaped docking part. The lower end of the atomizing impact pin is inserted into the docking part of the atomizing needle and extends into the inner channel of the needle. The air inlet is connected to the high-pressure gas channel, and the medium inlet is connected to the atomizing medium channel. The high-frequency air inlet connector is connected to the upper sliding groove. The upper sliding groove is equipped with a piston return spring, which pushes the impact pin fixing piston to move downward.

[0005] Preferably, the adjusting nut assembly includes a fixed nut seat and an adjusting screw; the fixed nut seat is fixedly installed on the upper part of the valve body housing, the inner side of the valve body housing is provided with a threaded groove, and the adjusting screw is screwed into the threaded groove; the lower end face of the adjusting screw abuts against the upper end face of the firing pin fixed piston, and rotating the adjusting screw can adjust the vertical stroke range of the firing pin fixed piston.

[0006] Preferably, the outer periphery of the fixing nut seat is provided with a ratchet groove; the top of the adjusting screw is provided with an adjusting cap, and the adjusting cap is provided with a ratchet post and an elastic spring; the elastic spring presses the ratchet post into the ratchet groove.

[0007] Preferably, it further includes an outlet medium interface; the atomizing medium channel runs through the valve body, and the inlet medium interface and outlet medium interface are respectively connected to the two ends of the atomizing medium channel.

[0008] Preferably, the lower end face of the atomizing needle is tapered.

[0009] Preferably, a rotatable atomizing sleeve is provided on the lower side of the valve body shell, the needle assembly groove is provided in the atomizing sleeve, and an outlet air channel is provided inside the atomizing sleeve, with the outlet of the outlet air channel facing the extension direction of the inner channel of the needle.

[0010] Preferably, the valve body housing is provided with a striking pin limiting sleeve, and the atomizing striking pin is inserted into the striking pin limiting sleeve.

[0011] Preferably, the atomizing sleeve is provided with a venting groove parallel to the inner channel of the needle, and the venting groove is connected to the outer channel of the needle.

[0012] Preferably, the axes of the upper sliding groove, the needle assembly groove, the atomizing striker, and the striker fixing piston are on the same straight line.

[0013] Preferably, it also includes an external high-frequency solenoid valve, which is connected to a high-frequency air intake connector.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Firstly, by setting up a medium circulation path (inlet / outlet medium interface) and making the atomizing needle reciprocate under the action of high-frequency airflow and return spring, this solution not only realizes the on-demand injection of the medium, but also uses the downward movement of the needle to mechanically clear the internal channel of the needle head each time it is closed, effectively solving the technical problem that the medium containing particles is prone to sedimentation and blockage of the valve port.

[0015] Secondly, this solution allows for independent adjustment of the atomization width and center concentration by adjusting the outlet angle of the atomizing gas through a rotatable atomizing sleeve; the stroke of the impact pin can be precisely controlled by adjusting the nut assembly, thereby adjusting the amount of adhesive.

[0016] Thirdly, an external high-frequency solenoid valve is used to drive the piston fixing pin. Combined with the piston return spring and the piston pin limiting sleeve, the valve needle is guaranteed to have rapid response, precise movement and long-term stability under high-frequency operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a high-frequency precision large atomizing valve. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of a high-frequency precision large atomizing valve. Figure 2 ; Figure 3 This is a cross-sectional view of a high-frequency precision large atomizing valve with the upper sliding groove as the center line; Figure 4 This is a cross-sectional view of a high-frequency precision large atomizing valve along the high-pressure gas channel as the center line; Figure 5 yes Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic diagram of the adjusting nut assembly in a high-frequency precision large atomizing valve.

[0018] Reference numerals: Valve body shell 1, Upper sliding groove 11, Needle assembly groove 12, Atomizing medium channel 13, High-pressure gas channel 14, Atomizing sleeve 15, Outlet gas channel 151, Vent groove 152, Impact pin limiting sleeve 16, External high-frequency solenoid valve 17, Atomizing needle 2, Inner needle channel 21, Outer needle channel 22, Atomizing impact pin 3, Impact pin fixing piston 4, Adjusting nut assembly 5, Fixing nut seat 51, Adjusting screw 52, ​​Adjusting cap 521, Ratchet post 522, Elastic spring 523, Air inlet port 6, Medium inlet port 7, Medium outlet port 71, High-frequency air inlet connector 8, Piston return spring 9. Detailed Implementation

[0019] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0020] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0021] It should be noted that, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this disclosure 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 disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Furthermore, the terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0023] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure depending on the specific circumstances. When a particular device is described as being located between a first device and a second device, an intermediary device may or may not be present between the particular device and the first or second device.

[0024] All terms used in this disclosure have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0025] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0026] like Figures 1 to 6As shown, a high-frequency precision large atomizing valve includes a valve body shell 1, an atomizing needle 2, an atomizing striker 3, a striker fixing piston 4, an adjusting nut assembly 5, an air inlet 6, a medium inlet 7, and a high-frequency air inlet connector 8. The valve body shell 1 internally has an upper sliding groove 11, a needle assembly groove 12, an atomizing medium channel 13, and a high-pressure gas channel 14. The adjusting nut assembly 5, the striker fixing piston 4, and the atomizing striker 3 are arranged sequentially from top to bottom, with the atomizing striker 3 fixedly installed at the lower end of the striker fixing piston 4. The adjusting nut assembly 5 is located on the upper part of the valve body shell 1, the striker fixing piston 4 is embedded in the upper sliding groove 11, and the atomizing needle 2 is embedded in the needle assembly groove 12. The atomizing needle 2 has a through-hole needle inner channel 21 in its middle, and its outer side and the inner side of the needle assembly groove 12 form a needle outer channel 22. The atomizing medium channel 13 is connected to the inner needle channel 21, and the high-pressure gas channel 14 is connected to the outer needle channel 22. One end of the atomizing striker 3 extends into the inner needle channel 21. The air inlet 6 is connected to the high-pressure gas channel 14, and the medium inlet 7 is connected to the atomizing medium channel 13. The high-frequency air inlet connector 8 is connected to the upper sliding groove 11, and a piston return spring 9 is provided in the upper sliding groove 11. The piston return spring 9 pushes the striker fixing piston 4 downward.

[0027] Furthermore, the adjusting nut assembly 5 includes a fixed nut seat 51 and an adjusting screw 52. The fixed nut seat 51 is fixedly installed on the upper part of the valve body housing 1, and the valve body housing 1 has a threaded groove on its inner side. The adjusting screw 52 is screwed into the threaded groove. The lower end face of the adjusting screw 52 abuts against the upper end face of the striking pin fixing piston 4. Rotating the adjusting screw 52 can adjust the vertical stroke range of the striking pin fixing piston 4.

[0028] Furthermore, the outer periphery of the fixing nut seat 51 is provided with a ratchet groove. The top of the adjusting screw 52 is provided with an adjusting cap 521, and the adjusting cap 521 is provided with a ratchet post 522 and an elastic spring 523. The elastic spring 523 presses the ratchet post 522 into the ratchet groove and provides damping force when the adjusting screw 52 is rotated to prevent loosening after adjustment.

[0029] The adjusting nut assembly 5 is used to precisely limit the upper limit position of the striker fixing piston 4. The fixing nut seat 51 is fixed to the top of the valve body housing 1. The adjusting screw 52 is screwed into the threaded groove inside the valve body, and its lower end abuts against the upper end face of the striker fixing piston 4. Rotating the adjusting screw 52 can finely adjust its height, thereby changing the stroke of the striker and ultimately achieving precise control of the dispensing amount. The ratchet post 522 on the adjusting cap 521 is engaged in the ratchet groove of the fixing nut seat 51 under the action of the elastic sleeve spring 523, producing an adjusting sound and providing a damping feel, effectively preventing the screw from rotating and loosening due to equipment vibration.

[0030] Furthermore, it also includes a medium outlet interface 71. The atomizing medium channel 13 runs through the valve body, and the medium inlet interface 7 and the medium outlet interface 71 are respectively connected to the two ends of the atomizing medium channel 13 to form a medium circulation path. For media that are prone to sedimentation, it can make them flow continuously at a low speed in the circuit, avoiding static sedimentation in the valve and completely solving the valve blockage problem.

[0031] Furthermore, the top of the atomizing needle 2 is provided with a volcano-shaped docking part, and the lower end of the atomizing impact pin 3 is inserted into the docking part of the atomizing needle 2 and extends into the inner channel 21 of the needle. The medium circulates inside the atomizing medium channel 13. Through the volcano design, it can effectively prevent particles from settling out of the dock and prevent valve blockage.

[0032] Furthermore, the lower end face of the atomizing needle 2 is tapered. This design effectively prevents particulate matter from settling and clogging the dispensing port.

[0033] Furthermore, a rotatable atomizing sleeve 15 is provided on the lower side of the valve body shell 1, and the needle assembly groove 12 is disposed in the atomizing sleeve 15. An outlet air channel 151 is provided inside the atomizing sleeve 15, and the outlet of the outlet air channel 151 is oriented towards the extending direction of the needle inner channel 21. By rotating the atomizing sleeve 15, the outlet air angle can be changed, thereby adjusting the atomization width and center effect.

[0034] Furthermore, a striker limiting sleeve 16 is provided on the valve body housing 1, and the atomizing striker 3 is inserted into the striker limiting sleeve 16. This design ensures the straightness and stability of the movement of the atomizing striker 3 and prevents swaying.

[0035] Furthermore, the atomizing sleeve 15 is provided with a venting groove 152 parallel to the inner channel 21 of the needle, and the venting groove 152 is connected to the outer channel 22 of the needle. This structure optimizes the flow path of the atomized airflow and improves the atomization efficiency.

[0036] Furthermore, the axes of the upper sliding groove 11, the needle assembly groove 12, the atomizing striker 3, and the striker fixing piston 4 are all on the same straight line. This coaxial design ensures the alignment of the moving components and reduces the risk of wear and jamming.

[0037] Furthermore, it also includes an external high-frequency solenoid valve 17, which is connected to the high-frequency air inlet connector 8. The external design allows users to flexibly choose whether to enable the high-frequency function according to the characteristics of the medium, and it is convenient for maintenance and replacement, and has a high operating frequency.

[0038] During operation, the medium enters through the medium inlet 7 and flows through the atomizing medium channel 13 and the needle inner channel 21. High-pressure atomizing gas enters through the air inlet 6 and flows through the high-pressure gas channel 14 and the needle outer channel 22. High-frequency control gas enters the upper cavity of the upper sliding groove 11 in a pulsed manner through the high-frequency air inlet connector 8 via an external high-frequency solenoid valve.

[0039] When the high-frequency airflow is injected, its pressure overcomes the elastic force of the piston return spring 9, pushing the impact pin fixing piston 4 to drive the atomizing impact pin 3 upward, opening the needle internal channel 21, and the medium is sprayed out and mixed with the high-speed atomizing gas to achieve atomization. When the high-frequency airflow is cut off, under the action of the piston return spring 9, the impact pin fixing piston 4 and the atomizing impact pin 3 move downward rapidly, and the impact pin head blocks the outlet of the needle internal channel 21, stopping the spraying. At the same time, this impact action can effectively clear any possible blockages.

[0040] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A high-frequency precision large atomizing valve, characterized in that, The valve body includes a valve housing (1), an atomizing needle (2), an atomizing striker (3), a striker fixing piston (4), an adjusting nut assembly (5), an air inlet (6), a medium inlet (7), and a high-frequency air inlet connector (8). The valve housing (1) has an upper sliding groove (11), a needle assembly groove (12), an atomizing medium channel (13), and a high-pressure gas channel (14). The adjusting nut assembly (5), the striker fixing piston (4), and the atomizing striker (3) are arranged sequentially from top to bottom. The atomizing striker (3) is fixedly installed at the lower end of the striker fixing piston (4). The adjusting nut assembly (5) is located on the upper part of the valve housing (1). The striker fixing piston (4) is embedded in the upper sliding groove (11), and the atomizing needle (2) is embedded in the needle assembly groove (12). The atomizing needle (2) has a central section... The needle inner channel (21) is penetrating through the needle, and its outer side is connected to the inner side of the needle assembly groove (12) to form the needle outer channel (22); the atomizing medium channel (13) is connected to the needle inner channel (21), and the high-pressure gas channel (14) is connected to the needle outer channel (22); the top of the atomizing needle (2) is provided with a volcano-shaped docking part, and the lower end of the atomizing impact pin (3) is inserted into the docking part of the atomizing needle (2) and extends into the needle inner channel (21); the air inlet (6) is connected to the high-pressure gas channel (14), and the medium inlet (7) is connected to the atomizing medium channel (13); the high-frequency air inlet connector (8) is connected to the upper sliding groove (11), and the upper sliding groove (11) is provided with a piston return spring (9), which pushes the impact pin fixing piston (4) to move downward.

2. The high-frequency precision large atomizing valve according to claim 1, characterized in that, The adjusting nut assembly (5) includes a fixed nut seat (51) and an adjusting screw (52); the fixed nut seat (51) is fixedly installed on the upper part of the valve body shell (1), and the valve body shell (1) has a threaded groove on its inner side, and the adjusting screw (52) is screwed into the threaded groove; the lower end face of the adjusting screw (52) abuts against the upper end face of the striker fixing piston (4), and rotating the adjusting screw (52) can adjust the upper and lower stroke range of the striker fixing piston (4).

3. The high-frequency precision large atomizing valve according to claim 2, characterized in that, The outer periphery of the fixed nut seat (51) is provided with a ratchet groove; the top of the adjusting screw (52) is provided with an adjusting cap (521), and the adjusting cap (521) is provided with a ratchet post (522) and an elastic spring (523); the elastic spring (523) presses the ratchet post (522) into the ratchet groove.

4. The high-frequency precision large atomizing valve according to claim 1, characterized in that, It also includes an outlet medium interface (71); the atomizing medium channel (13) runs through the valve body, and the inlet medium interface (7) and outlet medium interface (71) are respectively connected to the two ends of the atomizing medium channel (13).

5. The high-frequency precision large atomizing valve according to claim 1, characterized in that, The lower end face of the atomizing needle (2) is tapered.

6. The high-frequency precision large atomizing valve according to claim 1, characterized in that, A rotatable atomizing sleeve (15) is provided on the lower side of the valve body shell (1). The needle assembly groove (12) is provided in the atomizing sleeve (15). An outgoing air channel (151) is provided inside the atomizing sleeve (15). The air outlet of the outgoing air channel (151) is arranged in the direction of the extension of the needle inner channel (21).

7. The high-frequency precision large atomizing valve according to claim 1, characterized in that, A striker limiting sleeve (16) is provided on the valve body shell (1), and the atomizing striker (3) is inserted into the striker limiting sleeve (16).

8. The high-frequency precision large atomizing valve according to claim 6, characterized in that, The atomizing sleeve (15) is provided with a ventilation groove (152) parallel to the inner channel (21) of the needle, and the ventilation groove (152) is connected to the outer channel (22) of the needle.

9. The high-frequency precision large atomizing valve according to claim 1, characterized in that, The axes of the upper sliding groove (11), the needle assembly groove (12), the atomizing impact pin (3) and the impact pin fixing piston (4) are on the same straight line.

10. The high-frequency precision large atomizing valve according to claim 1, characterized in that, It also includes an external high-frequency solenoid valve (17), which is connected to a high-frequency air intake connector (8).

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