High-frequency electromagnetic valve and isolation type variable spray head

Abstract

The high-frequency electromagnetic valve comprises an installation nut, a liquid flow cavity, a limiting sleeve, a valve cavity, a valve body, a valve element and a sealing ring. A valve cavity is formed in the valve body, and a valve element capable of moving in the axial direction is arranged in the valve cavity. A limiting sleeve is further arranged between the valve element and the valve cavity, the liquid flow cavity comprises a liquid flow cavity body, the liquid flow cavity body comprises a large cylinder and a small cylinder, the small cylinder is located in the center of the end face of the large cylinder, the large cylinder and the small cylinder are coaxially arranged, a liquid flow cavity liquid outlet hole is formed in the center of the small cylinder in the axis direction, and liquid flow cavity liquid inlet holes are formed in the end face of the large cylinder around the small cylinder by a circle. An isolation sealing gasket is arranged on the inner ring of the large cylinder, the isolation sealing gasket, the large cylinder and the small cylinder jointly define a cavity, the cavity is communicated with the liquid flow cavity liquid inlet hole and the liquid flow cavity liquid outlet hole, the inner ring of the large cylinder is in threaded fit with the valve cavity, the outer ring of the large cylinder is matched with the installation nut, and the valve element pushes the isolation sealing gasket in the liquid flow cavity to move. And the liquid outlet hole of the liquid flow cavity is sealed or the liquid outlet hole of the liquid flow cavity is opened.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-frequency on-off variables of pipelines, and in particular relates to a high-frequency solenoid valve and an isolated variable nozzle. Background Art

[0002] In industrial and agricultural spraying operations, variable-displacement sprinklers enable precise control of spray volume, enabling on-demand spraying and minimizing waste. In particular, variable-displacement spraying in agricultural pesticide and fertilization applications can significantly reduce pesticide and fertilizer consumption, making it environmentally friendly and sustainable. Existing variable-displacement spraying technologies, however, often rely on system pipelines being opened and closed or by varying the cross-sectional area of ​​the flow path. This results in poor responsiveness and delayed control response. Furthermore, the solenoid valves in the control lines are often designed directly on the fluid path, allowing liquid to flow through the valve core, complicating maintenance and reducing their service life. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention proposes a high-frequency solenoid valve and an isolated variable nozzle. The high-frequency solenoid valve can realize the rapid opening and closing of the nozzle liquid circuit, and only controls the internal flow channel of the nozzle, achieving good liquid circuit synchronization control and response speed, and realizing effective isolation of the solenoid valve metal valve cavity and the liquid circuit, preventing the liquid from flowing through the solenoid valve, which can significantly reduce the difficulty of solenoid valve maintenance and increase the service life of the solenoid valve.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] When the valve body is in the closed position, the valve core is pushed and the valve body is opened, and the valve body is in the closed position, and the valve core is pushed and the valve core is opened. When the valve body is in the closed position, the valve core is pushed and the valve core is opened. When the valve body is in the closed position, the valve core is pushed and the valve core is opened. When the valve body is in the closed position, the valve core is pushed and the valve core is opened.

[0006] As a further technical solution, a pressure relief hole is further provided on the side wall of the valve cavity.

[0007] As a further technical solution, the valve core is provided with a pressure relief groove, and a plurality of the pressure relief grooves are provided along the axial direction of the valve core.

[0008] As a further technical solution, the limiting sleeves are semicircular structures and are arranged in pairs between the valve core and the valve cavity.

[0009] As a further technical solution, a sealing ring is provided on the outer ring of the small cylinder to seal the connection portion between the small cylinder and the nozzle body.

[0010] As a further technical solution, the valve chamber includes two parts, one part is a solid structure and the other part is a hollow structure. The hollow structure forms the valve chamber body, and a pressure relief hole is also formed on the outer wall of the hollow structure part. The pressure relief hole is arranged along the radial direction of the valve chamber.

[0011] As a further technical solution, the valve core is cylindrical as a whole and includes two sections, namely a large diameter section and a small diameter section. A pressure relief groove is provided on the side wall of the large diameter section, and a limiting shoulder is formed at the boundary between the large diameter section and the small diameter section; and a limiting shoulder is also provided on the small diameter section, and a spring is mounted on the small diameter section.

[0012] In the second aspect, based on the above-mentioned high-frequency solenoid valve, the present invention also provides an isolated variable nozzle, which is provided with a nozzle annular liquid inlet and a nozzle liquid flow channel; the annular liquid inlet is connected to the main liquid pipeline and the liquid flow cavity liquid inlet hole, and the liquid flow channel is installed in conjunction with the high-frequency solenoid valve liquid flow cavity liquid outlet hole.

[0013] The beneficial effects of the present invention are as follows:

[0014] The high-frequency solenoid valve disclosed in the present invention realizes the control of the liquid circuit by independently designing the liquid cavity and then coordinating the movement of the isolation sealing gasket and the valve core, and can also achieve the effect of isolating the solenoid valve cavity and the liquid cavity without causing pollution to the solenoid valve cavity. In the movement of the solenoid valve core, high-frequency reciprocating motion is achieved through the limitation of the limit sleeve and the valve cavity; furthermore, the present invention provides a pressure relief groove on the valve core, so that the air pressure balance can be achieved inside the valve cavity, thereby avoiding the influence of the pressure difference in the valve cavity on the reciprocating motion of the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0016] Figure 1 A side plan view of an embodiment of the present invention;

[0017] Figure 2 is a main cross-sectional view of an embodiment of the present invention;

[0018] Figure 3 A side plan view of a high-frequency solenoid valve according to an embodiment of the present invention;

[0019] Figure 4 This is a main sectional view of a high-frequency solenoid valve according to an embodiment of the present invention;

[0020] Figure 5 A side plan view of a liquid flow chamber of a high-frequency solenoid valve according to an embodiment of the present invention;

[0021] Figure 6 This is a main cross-sectional view of a liquid flow chamber of a high-frequency solenoid valve according to an embodiment of the present invention;

[0022] Figure 7 A side plan view of a high-frequency solenoid valve chamber according to an embodiment of the present invention;

[0023] Figure 8 This is a main cross-sectional view of a valve cavity of a high-frequency solenoid valve according to an embodiment of the present invention;

[0024] Figure 9 A side plan view of a valve core limiting sleeve according to an embodiment of the present invention;

[0025] Figure 10 A side plan view of a high-frequency solenoid valve core according to an embodiment of the present invention;

[0026] Figure 11 This is a main cross-sectional view of a high-frequency solenoid valve core according to an embodiment of the present invention.

[0027] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0028] 1: Nozzle body; 2: High-frequency solenoid valve; 3: Mounting nut; 4: Liquid flow chamber; 5: Limit sleeve; 6: Valve chamber; 7: Valve body; 8: Valve core; 9: Liquid flow chamber body; 10: Isolation gasket; 11: Sealing ring; 12: Spring; 13: Sealing ring;

[0029] 1-1: nozzle annular liquid inlet; 1-2: nozzle liquid flow channel;

[0030] 4-1: Liquid inlet of the liquid flow chamber; 4-2: Liquid outlet of the liquid flow chamber;

[0031] 6-1: Valve cavity; 6-2: Pressure relief hole; 6-3: Solid structure; 6-4: Card mounting plate;

[0032] 8-1: Limiting shoulder; 8-3: Limiting shoulder; 8-2: Pressure relief groove. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise clearly indicated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprising" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations;

[0035] like Figure 1 、 Figure 2 As shown, this embodiment discloses a high-frequency solenoid valve and an isolated variable nozzle, wherein the variable nozzle includes a nozzle body 1 and a high-frequency solenoid valve 2; the nozzle body 1 is provided with a nozzle annular liquid inlet 1-1 and a nozzle liquid flow channel 1-2; the nozzle annular liquid inlet 1-1 is connected to the liquid flow chamber inlet hole 4-1 of the high-frequency solenoid valve 2, and the nozzle liquid flow channel 1-2 is connected to the liquid flow chamber outlet hole 4-2 of the high-frequency solenoid valve 2, and the high-frequency solenoid valve 2 controls the on-off of the liquid flow chamber inlet hole 4-1 and the liquid flow chamber outlet hole 4-2, thereby realizing on-off control between the nozzle annular liquid inlet 1-1 and the nozzle liquid flow channel 1-2.

[0036] like Figure 3 、 Figure 4 As shown, the structure of the high-frequency solenoid valve 2 includes a mounting nut 3, a liquid flow chamber 4, a limiting sleeve 5, a valve chamber 6, a valve body 7, a valve core 8, and a sealing ring 13; a valve chamber 6 is provided in the valve body 7, and a valve core 8 that can move axially is provided in the valve chamber 6; the outer ring of the valve chamber 6 is threadedly matched with the liquid flow chamber 4, and a limiting sleeve 5 is also provided between the valve core 8 and the valve chamber 6. The valve core 8 can push the isolation sealing gasket 10 in the liquid flow chamber 4 to move, thereby realizing the on-off control of the liquid flow chamber inlet hole 4-1 and the liquid flow chamber outlet hole 4-2, and the liquid flow chamber 4 and the valve chamber 6 of the high-frequency solenoid valve 2 are in a completely isolated state. After the liquid enters the high-frequency solenoid valve 2, it will not flow through the valve chamber 6, and therefore will not cause pollution to the valve chamber 6. The mounting nut 3 is matched with the outer ring of the liquid flow chamber 4, and a sealing ring 13 is provided between the two; the mounting nut 3 is used to connect the high-frequency solenoid valve 2 and the nozzle body 1;

[0037] like Figure 5 、 Figure 6As shown, the structure of the liquid flow chamber 4 includes a liquid flow chamber body 9, an isolation sealing gasket 10, and a sealing ring 11; the liquid flow chamber body 9 is designed with a liquid flow chamber liquid inlet hole 4-1 and a liquid flow chamber liquid outlet hole 4-2. The isolation sealing gasket 10 can realize the isolation and sealing of the liquid flow chamber and the metal valve chamber; specifically, the liquid flow chamber main body 9 includes a large cylinder and a small cylinder, the small cylinder is located at the center of the end face of the large cylinder, the two are coaxially arranged, and a liquid flow chamber outlet hole 4-2 is arranged at the center of the small cylinder along its axial direction, and a liquid flow chamber inlet hole 4-1 is arranged around the small cylinder on the end face of the large cylinder, and an isolation sealing gasket 10 is arranged on the inner circle of the large cylinder. The isolation sealing gasket 10 and the large cylinder and the small cylinder together form a cavity, which is connected with the liquid flow chamber inlet hole 4-1 and the liquid flow chamber outlet hole 4-2. A sealing ring 11 is arranged on the outer circle of the small cylinder for sealing the connection part between the small cylinder and the nozzle body 1; the large cylinder is a central cylinder, and an internal thread is arranged on its inner circle, and the internal thread cooperates with the valve chamber 6.

[0038] Specifically, a circle of grooves is provided on the inner wall of the large cylinder, the outer ring of the isolation sealing gasket 10 is installed in the groove, and the valve core pushes the middle part of the isolation sealing gasket 10 to achieve sealing of the end of the liquid outlet hole 4-2 of the liquid flow cavity;

[0039] Specifically, a plurality of liquid flow cavity liquid inlet holes 4 - 1 are provided, and the plurality of liquid flow cavity liquid inlet holes 4 - 1 are evenly arranged around the outer circle of the small cylinder.

[0040] like Figure 7 、 Figure 8 As shown, the valve chamber 6 includes two parts, one part of which is a solid structure 6-3, and the other part is a hollow structure, and the solid structure and the hollow structure are clamped together or connected by threads; wherein, the hollow structure forms a valve chamber body 6-1, and a pressure relief hole 6-2 is also formed on the outer wall of the hollow structure part, and the pressure relief hole 6-2 is arranged along the radial direction of the valve chamber 6, and the pressure relief hole 6-2 is communicated with the valve chamber body 6-1, and a valve core 8 is arranged inside the valve chamber body 6-1, and a limiting sleeve 5 is also arranged between the valve core 8 and the valve chamber body 6-1, and the main body of the limiting sleeve 5 is located in the valve chamber body 6-1, but the end of the limiting sleeve 5 is clamped in the inner wall groove of the liquid flow chamber 4, and a thread is provided on the outer wall of the hollow structure, and the thread realizes threaded cooperation between the liquid flow chamber 4 and the hollow structure of the valve chamber 6.

[0041] Furthermore, in order to realize the installation of the valve chamber 6 on the valve body and the valve seat, the outer ring of the hollow structure is further provided with a circle of clamping disk 6-4, and the pressure relief hole 6-2 is provided on the clamping disk 6-4.

[0042] like Figure 9 As shown, the limiting sleeves 5 are semicircular in design and need to be installed in pairs.

[0043] like Figure 10 、 Figure 11As shown, the valve core 8 is cylindrical as a whole and includes two sections, namely a large diameter section and a small diameter section. A pressure relief groove 8-2 is provided on the side wall of the large diameter section. The pressure relief groove 8-2 is provided in multiple rows along the axial direction, forming a limiting shoulder 8-1 at the boundary between the large diameter section and the small diameter section. A spring 12 is installed on the small diameter section to reduce the movement of the valve core.

[0044] A circle of limiting shoulder 8-2 is also provided in the middle of the small diameter section. When the valve core moves to the right, its moving distance is limited by the limiting sleeve 5. When the limiting shoulder 8-1 contacts the limiting sleeve 5, the moving distance of the valve core to the right reaches the maximum; when the valve core moves to the left, when the limiting shoulder 8-2 contacts the limiting sleeve 5, the moving distance of the valve core to the left reaches the maximum. At the same time, the solid part structure of the left part of the valve cavity 6 can also limit the distance of the valve core 8 moving to the right. Furthermore, the pressure relief groove 8-2 of this embodiment cooperates with the above-mentioned pressure relief hole 6-2, so that the pressure inside the valve cavity is quickly balanced. Specifically, when the valve core 8 moves to the side where the isolation sealing gasket 10 is located to the side where the isolation sealing gasket 10 is located, the pressure relief hole 6-2 is provided. When the isolation sealing gasket 10 contacts, it starts to push the isolation sealing gasket 10 to move. At this time, the pressure inside the valve cavity 6 will decrease, and a negative pressure will be formed inside the valve cavity 6. At this time, air will enter through the pressure relief hole 6-2, and the internal air pressure will be quickly balanced; when the valve core 8 moves away from the isolation sealing gasket 10, the pressure in the valve cavity 6 will increase. At this time, the gas in the valve cavity 6 will be relieved through the pressure relief hole 6-2, and the internal air pressure will be quickly balanced; during the entire reciprocating motion of the valve core 8, due to the movement of the valve core 8, the pressure on both sides of the valve core 8 will sometimes be unbalanced. At this time, the pressure inside the valve cavity 6 can be balanced through the pressure relief groove 8-2 on the valve core.

[0045] The working principle and usage of the above device are as follows:

[0046] When the variable nozzle is actually used, the nozzle body 1 is connected to the mounting nut 3 and the liquid flow chamber 4; the annular liquid inlet 1-1 on the nozzle body 1 is connected to the main liquid pipeline, and the liquid flow channel 1-2 is installed in conjunction with the liquid outlet hole 4-2 of the high-frequency solenoid valve liquid flow chamber.

[0047] In the passage state, the liquid flows along the annular liquid inlet 1-1 of the nozzle, enters the liquid flow cavity 4 through the liquid flow cavity liquid inlet hole 4-1, and then flows out through the liquid flow cavity liquid outlet hole 4-2, enters the nozzle liquid flow channel 1-2, forms a liquid flow passage, and is finally sprayed out by the nozzle.

[0048] By controlling the on / off switching of the high-frequency solenoid valve, the valve core 8 can be reciprocated within the valve 6, thereby compressing or releasing the isolation seal 10. When the isolation seal 10 is compressed, it contacts the end of the liquid flow chamber outlet hole 4-2, disconnecting the liquid path; when the isolation seal 10 is released, it disengages from the liquid flow chamber outlet hole 4-2, completing the liquid path.

[0049] Furthermore, to ensure pressure balance during the movement of the valve core 8, the high-frequency solenoid valve chamber 6 is designed with a pressure relief hole 6-2 to allow air to flow in and out of the valve chamber, ensuring rapid pressure relief during the reciprocating movement of the valve core 8. The valve core 8 is also designed with a pressure relief groove 8-2 to ensure rapid circulation of air within the valve chamber, ensuring rapid pressure balance at the front and rear ends of the valve core during the reciprocating movement of the valve core 8.

[0050] Furthermore, the valve core 8 is designed with a limit shoulder 8-1 and a limit shoulder 8-3. The limit shoulder 8-1 and the limit shoulder 8-3 cooperate with the limit sleeve 5 to realize the constraint of the reciprocating motion displacement of the valve core, meeting the high-frequency operation and displacement accuracy of the reciprocating motion of the valve core.

[0051] This embodiment can realize rapid on-off of the liquid circuit by high-frequency rapid on-off of the high-frequency solenoid valve, and change the spray volume of the nozzle by controlling the on-off time ratio and the on-off frequency.

[0052] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0053] Finally, it should be noted that relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0054] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A high frequency solenoid valve, characterized in that: The spool and the valve core are connected by a threaded connection to the valve body, and the ...

2. The high-frequency solenoid valve according to claim 1, characterized in that: A pressure relief hole is also provided on the side wall of the valve cavity.

3. The high-frequency solenoid valve according to claim 1, characterized in that: The valve core is provided with a pressure relief groove, and a plurality of pressure relief grooves are provided along the axial direction of the valve core.

4. The high-frequency solenoid valve according to claim 1, characterized in that: The limiting sleeves are semicircular structures and are arranged in pairs between the valve core and the valve cavity.

5. The high-frequency solenoid valve according to claim 1, characterized in that: A sealing ring is arranged on the outer ring of the small cylinder to seal the connection part between the small cylinder and the nozzle body.

6. The high-frequency solenoid valve according to claim 1, characterized in that: The valve cavity includes two parts, one of which is a solid structure and the other is a hollow structure. The hollow structure forms a valve cavity body, and a pressure relief hole is formed on the outer wall of the hollow structure part. The pressure relief hole is arranged along the radial direction of the valve cavity.

7. The high frequency solenoid valve according to claim 1, characterized in that: The valve core is cylindrical as a whole, and includes two sections, namely a large diameter section and a small diameter section. A pressure relief groove is arranged on the side wall of the large diameter section, and a limiting shoulder is formed at the boundary between the large diameter section and the small diameter section; a limiting shoulder is also arranged on the small diameter section, and a spring is mounted on the small diameter section.

8. An isolated variable nozzle, characterized in that: A high-frequency solenoid valve as described in any one of claims 1 to 7 is installed on the nozzle.

9. The isolated variable-displacement sprinkler as claimed in claim 8, characterized in that: The nozzle is provided with an annular liquid inlet and a liquid flow channel; the annular liquid inlet is connected to the main liquid pipeline and the liquid inlet hole of the liquid flow cavity, and the liquid flow channel is installed in coordination with the liquid outlet hole of the high-frequency electromagnetic valve liquid flow cavity.

10. The isolated variable-speed sprinkler as claimed in claim 8, characterized in that: The sprinkler is connected to the isolated variable sprinkler through a mounting nut.

Images