Vortex conical nozzle and spray head

Abstract

The invention discloses a vortex conical nozzle and a sprayer, and relates to the technical field of atomizing sprayers, the vortex conical nozzle comprises a nozzle body and a vortex nozzle core in sealing connection with the nozzle body, the nozzle body is provided with a liquid outlet atomizing hole, and the vortex nozzle core is provided with a liquid inlet hole corresponding to the liquid outlet atomizing hole; the vortex nozzle core is sequentially provided with a liquid inlet channel, a flow dividing cavity and a vortex cavity from the liquid inlet hole end to the other end; a plurality of flow dividing openings are formed in the peripheral side of the flow dividing cavity, and a plurality of vortex channels are formed in the peripheral side of the vortex cavity. According to the nozzle, the flow dividing cavity and the vortex cavity are formed in the nozzle, so that liquid forms vortex motion in the cavity of the nozzle, the flow control of the nozzle is more stable, the spray shape is more uniform, and a better atomization effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of atomizing nozzles, and in particular to a vortex conical nozzle and a nozzle head. Background Art

[0002] In the spraying operations of industrial and agricultural production, as the core component of the spraying system, the performance of the nozzle directly determines the uniformity and atomization effect of spraying, and thus affects the operation efficiency and product quality. At present, most conical nozzles are of direct-flow design. Although such nozzles have the advantages of large flow coefficient and small size, they have deficiencies in the stability and uniformity of the fog flow and are difficult to meet the requirements of high-precision spraying in modern industrial and agricultural production.

[0003] For example: Chinese Patent (Publication No. CN 221785131 U, Publication Date: October 1, 2024) discloses an agricultural plant protection nozzle assembly. A nut is provided on the tee pipe, a nozzle body is provided at the lower end of the tee pipe, an adjustable anti-drip valve cap is provided at the front end of the nozzle body, an anti-drip diaphragm is provided inside the adjustable anti-drip valve cap, and an anti-drip valve is provided at the front end of the anti-drip diaphragm; a filter screen is provided inside the nozzle body, and a nozzle cap is provided below the nozzle body. The nozzle in this solution is of a direct-flow structure, and the liquid directly sprays out from the outlet of the nozzle cap, having problems of insufficient stability and uniformity of the fog flow. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a vortex conical nozzle and a nozzle head. By providing a flow splitting chamber and a vortex chamber inside the nozzle, the liquid forms a vortex motion in the nozzle cavity, making the nozzle flow control more stable, the spray shape more uniform, and achieving a better atomization effect.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions:

[0006] In the first aspect, an embodiment of the present invention provides a vortex conical nozzle, including a nozzle body and a vortex nozzle core sealingly connected to the nozzle body. The nozzle body is provided with liquid outlet atomizing holes, and the vortex nozzle core is provided with liquid inlet holes corresponding to the liquid outlet atomizing holes. The vortex nozzle core is sequentially provided with a liquid inlet channel, a flow splitting chamber, and a vortex chamber from the liquid inlet hole end to the other end;

[0007] A plurality of flow splitting ports are provided on the periphery of the flow splitting chamber, and a plurality of vortex channels are provided on the periphery of the vortex chamber.

[0008] As a further implementation manner, the number of the vortex channels is the same as the number of the flow splitting ports, and the vortex channels and the flow splitting ports are arranged in a staggered manner, so that the vortex channels and the flow splitting ports are distributed in a spiral shape on the periphery of the vortex nozzle core.

[0009] As a further implementation manner, the periphery of the vortex chamber has multiple arc surfaces, and the vortex channels are tangent to the arc surfaces of the vortex chamber.

[0010] As a further implementation, the segment of the eddy current nozzle core provided with the shunt cavity is in a frustum structure.

[0011] As a further implementation, a cavity is provided inside the nozzle body, and the shunt port and the eddy current channel are both communicated with the cavity;

[0012] The outer side of the eddy current nozzle core is matched with the inner wall of the cavity through a sealing ring.

[0013] As a further implementation, the eddy current nozzle core is provided with a clamping groove, one end of the nozzle body is clamped with the clamping groove, and the main part of the eddy current nozzle core extends into the cavity of the nozzle body.

[0014] As a further implementation, an expansion port is arranged outside the liquid outlet atomizing hole.

[0015] In a second aspect, an embodiment of the present invention further provides an eddy current conical nozzle, including the conical nozzle described above.

[0016] As a further implementation, it further includes a nozzle body, a nozzle cap and an anti-drip valve. The conical nozzle is installed at the outlet of the nozzle body through the nozzle cap, and the anti-drip valve is installed on one side of the nozzle body.

[0017] As a further implementation, a filter screen is installed in the inner cavity of the nozzle body.

[0018] The beneficial effects of the present invention are as follows:

[0019] (1) A shunt cavity and an eddy current cavity are arranged in the nozzle body of the present invention, so that the liquid forms an eddy current motion in the nozzle cavity, making the nozzle flow control more stable, the spray shape more uniform, the droplet size more uniform, and achieving a better atomization effect.

[0020] (2) The shunt cavity of the eddy current nozzle core of the nozzle of the present invention is communicated with the liquid inlet channel, and a plurality of shunt ports are uniformly arranged in the circumferential direction of the shunt cavity, so that the liquid enters the cavity through the liquid inlet channel, the shunt cavity and the shunt ports; a plurality of uniformly distributed eddy current channels are arranged on the circumferential side of the eddy current cavity, and the liquid enters the eddy current cavity along the tangential direction of the cavity of the eddy current cavity through the plurality of eddy current channels, and the plurality of liquid flows are guided by the arc surface at the end of the eddy current channel to rotate and flow in the same direction, so that the liquid entering the eddy current cavity forms an eddy current motion, and thus the liquid is sprayed out from the liquid outlet atomizing hole in a stable state.

[0021] (3) The eddy current conical nozzle of the present invention includes a nozzle body and an eddy current nozzle core, and the two are inserted and matched through the clamping groove provided on the eddy current nozzle core, and the outer wall of the eddy current nozzle core is hermetically connected with the inner wall of the nozzle body, so that the nozzle body and the eddy current nozzle core are tightly connected, and stable connection during the use of the nozzle can be achieved while ensuring the sealing performance, and the spraying effect is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which form a part of this invention, are used to provide a further understanding of the invention. The schematic embodiments and descriptions thereof of the invention are used to explain the invention and do not unduly limit the invention.

[0023] Figure 1 is an axonometric view of a vortex conical nozzle according to one or more embodiments of the present invention;

[0024] Figure 2 is a sectional view of a vortex conical nozzle according to one or more embodiments of the present invention;

[0025] Figure 3 is an axonometric view of a vortex conical nozzle according to one or more embodiments of the present invention;

[0026] Figure 4 is a sectional view of a vortex conical nozzle according to one or more embodiments of the present invention;

[0027] Figure 5 is an axonometric view of a vortex nozzle core according to one or more embodiments of the present invention;

[0028] Figure 6 is a top view of a vortex nozzle core according to one or more embodiments of the present invention.

[0029] Wherein, 1, nozzle body; 2, anti-drip valve; 3, filter screen; 4, nozzle cap; 5, vortex conical nozzle;

[0030] 51, nozzle body; 52, vortex nozzle core; 53, sealing ring;

[0031] 511, cavity; 512, liquid outlet atomizing hole; 513, expansion port; 521, liquid inlet hole; 522, liquid inlet channel; 523, shunt cavity; 524, shunt port; 525, vortex cavity; 526, vortex channel; 527, clamping groove; 528, mounting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] It should be noted that the following detailed description is exemplary 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 of ordinary skill in the technical field to which the present invention belongs.

[0033] Embodiment 1:

[0034] Since most of the current conical nozzles are direct-flow type, there are deficiencies in the stability and uniformity of the mist flow; based on this, this embodiment provides a vortex conical nozzle, as Figure 3 and Figure 4As shown, it includes a nozzle body 51 and a vortex nozzle core 52, which are hermetically connected. The flow nozzle core is provided with a shunt chamber 523 and a vortex chamber 525, enabling the liquid to form a vortex motion within the nozzle cavity 511, making the nozzle flow control more stable.

[0035] Specifically, one end of the nozzle body 51 is an open structure with a cavity 511 of a certain depth inside. Both the cavity 511 and the nozzle body 51 are cylindrical structures. The other end of the nozzle body 51 is provided with a liquid outlet atomization hole 512, which is communicated with the cavity 511 and coaxially arranged with the cavity 511. The liquid sprays out in a spray shape from the liquid outlet atomization hole 512. In this embodiment, the liquid outlet atomization hole 512 is composed of a first hole section, a second hole section, and a third hole section that are axially connected in sequence. Among them, the second hole section is cylindrical, and the first hole section and the third hole section are symmetrically arranged relative to the second hole section. Both the first hole section and the third hole section are frustum structures.

[0036] Furthermore, in the direction of liquid flow, the aperture of the liquid outlet atomization hole 512 gradually decreases from the first hole section to the entrance of the second hole section; the aperture gradually increases from the exit of the second hole section to the third hole section. The liquid outlet atomization hole 512 with the above structure can ensure a good atomization effect.

[0037] In order to guide the droplets, a flare 513 is provided outside the liquid outlet atomization hole 512. The flare 513 is a flared structure; a platform structure is formed at the junction of the flare 513 and the liquid outlet atomization hole 512.

[0038] The vortex nozzle core 52 of this embodiment is in plug-in fit with the nozzle body 51 and is hermetically connected; as Figures 3 - 6 shown, a clamping portion is provided on the open side of the nozzle body 51, making the longitudinal section of the nozzle body 51 a T-shaped structure; the vortex nozzle core 52 has a main body part and an installation part. Its main body part extends into the cavity 511 of the nozzle body 51, and the installation part is used to cooperate with the clamping portion of the nozzle body 51. Therefore, a clamping groove 527 is opened on the installation part of the vortex nozzle core 52, and the shape of the clamping portion is adapted to the clamping groove 527. After the two are plugged in, the lower end face of the nozzle body 51 just fits with the upper end face of the installation part (in accordance with Figure 3 、 Figure 4 the view direction), and combined with the hermetic connection method, the vortex nozzle core 52 and the nozzle body 51 form a tight fit.

[0039] The hermetic connection between the vortex nozzle core 52 and the nozzle body 51 is achieved through the following structure:

[0040] As Figure 4 and Figure 5As shown, an installation groove 528 is provided at one end of the main body part of the eddy current nozzle core 52 close to the installation part. The installation groove 528 is an annular groove, and a sealing ring 53 is arranged in the circumferential groove. Through the extrusion contact between the sealing ring 53 and the inner wall of the cavity 511 of the nozzle body 51, a good seal is formed.

[0041] The main body part of the eddy current nozzle core 52 is successively a sealing section, a flow dividing section, and an eddy current section from the end where the installation part is located to the other end. Among them, the sealing section is the section for installing the sealing ring 53, the flow dividing section is the section where the flow dividing cavity 523 is arranged, and the eddy current section is the section where the eddy current cavity 525 is arranged.

[0042] Specifically, as Figures 4 - 6 shown, an inlet liquid channel 522 is arranged inside the sealing section. The inlet liquid channel 522 is communicated with the inlet liquid hole 521. The inlet liquid hole 521 penetrates through the installation part of the eddy current nozzle core 52. And, in the direction of liquid flow, the diameter of the inlet liquid hole 521 gradually decreases, which plays a guiding role for the liquid to make the liquid smoothly enter the inlet liquid channel 522; the inlet liquid channel 522 is of a cylindrical structure and is coaxially arranged with the liquid outlet atomizing hole 512.

[0043] The whole flow dividing section is of a frustum structure, and the size of the connecting section with the sealing section is larger than the size of the other end; in order to facilitate the main body part of the eddy current nozzle core 52 to smoothly enter the cavity 511 of the nozzle body 51, an inclined table surface is arranged at the connecting end of the sealing section and the flow dividing section.

[0044] A flow dividing cavity 523 is arranged inside the flow dividing section. The flow dividing cavity 523 is communicated with the inlet liquid channel 522, and a plurality of flow dividing ports 524 are evenly arranged in the circumferential direction of the flow dividing section, so that the liquid enters the cavity 511 through the inlet liquid channel 522, the flow dividing cavity 523, and the flow dividing ports 524. The number of the flow dividing ports 524 is determined according to actual requirements. In this embodiment, four flow dividing ports 524 are arranged.

[0045] The whole eddy current section is of a cylindrical structure. According to Figure 3 and Figure 4 the view direction, the eddy current cavity 525 is arranged on the upper side of the eddy current section, and the eddy current cavity 525 does not penetrate the eddy current section, that is, in the axial direction, the eddy current cavity 525 and the flow dividing cavity 523 are not communicated. A plurality of uniformly distributed eddy current channels 526 are arranged on the circumferential side of the eddy current cavity 525. The circumferential side of the eddy current cavity 525 has multiple arc surfaces, and the eddy current channels 526 are tangent to the arc surfaces of the eddy current cavity 525; the liquid enters the eddy current cavity 525 along the tangential direction of the cavity of the eddy current cavity 525 through the plurality of eddy current channels 526, and through the guiding of the arc surface at the end of the eddy current channel 526, multiple liquid flows rotate and flow in the same direction, so that the liquid entering the eddy current cavity 525 forms an eddy current movement.

[0046] In this embodiment, the number of the eddy current channels 526 is the same as the number of the flow dividing ports 524; as Figure 5 and Figure 6As shown, the cross-section of the eddy current cavity 525 is circular, and the eddy current channel 526 is a channel connecting to the eddy current cavity 525; the eddy current channel 526 has a certain width, and its depth is consistent with that of the eddy current cavity 525. One side of the eddy current channel 526 is tangent to the edge of the eddy current cavity 525, and the other side has a certain distance from the above-mentioned side. The two sides are parallel to each other, and the distance between them is the width of the eddy current channel 526. Multiple eddy current channels 526 form a blade structure arranged around the eddy current cavity 525, so that the liquid enters the eddy current cavity 525 from the eddy current channel 526 to form an eddy current.

[0047] When four eddy current channels 526 are arranged respectively, the included angle between adjacent eddy current channels 526 is 90°.

[0048] The diversion port 524 and the eddy current channel 526 are arranged in a staggered manner on the circumferential side of the eddy current nozzle core 52. Specifically, the cross-sectional dimension of the diversion port 524 is larger than that of the eddy current channel 526, and the eddy current channel 526 and the diversion port 524 overlap in part in the circumferential direction, so that the connection line between the eddy current channel 526 and the diversion port 524 forms a structure similar to a spiral line, which is convenient for generating an eddy current phenomenon.

[0049] The eddy current nozzle core 52 of this embodiment is successively provided with a diversion cavity 523 and an eddy current cavity 525, so that the diversion cavity 523 and the eddy current cavity 525 are arranged in the cavity 511 of the nozzle body 51. The liquid enters the diversion cavity 523 through the liquid inlet hole 521 and the liquid inlet channel 522, and then enters the corresponding eddy current channel 526 through the diversion port 524 and the cavity 511, and then converges into the eddy current cavity 525 to form an eddy current movement, making the nozzle flow control more stable, the spray shape more uniform, and the droplet size more uniform, achieving a better atomization effect.

[0050] Embodiment 2:

[0051] This embodiment provides an eddy current conical nozzle, as Figure 1 and Figure 2 shown, including a nozzle body 1, a nozzle cap 4, an eddy current conical nozzle 5 and a drip-proof valve 2. Among them, the structure of the eddy current conical nozzle 5 is as described in Embodiment 1; according to Figure 1 and Figure 2 the view directions shown, the eddy current conical nozzle 5 is installed at the lower end of the nozzle body 1, and the drip-proof valve 2 is installed on the side of the nozzle body 1, and the drip-proof valve 2 can prevent the liquid from dripping after the liquid delivery stops.

[0052] Specifically, a cavity is provided inside the nozzle body 1. The eddy current conical nozzle 5 is installed at the bottom of the nozzle body 1. The nozzle cap 4 is coaxially installed outside the nozzle body 1, and the nozzle cap 4 fixes the eddy current conical nozzle 5 together with the eddy current conical nozzle 5. A filter screen 3 is installed in the cavity inside the nozzle body 1. The filter screen 3 is coaxially arranged with the eddy current conical nozzle 5, and the liquid enters the eddy current conical nozzle 5 after being filtered through the filter screen 3, avoiding blockage inside the eddy current conical nozzle 5.

[0053] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A swirl cone nozzle, characterized in that: It comprises a nozzle body and a vortex nozzle core sealed and connected to the nozzle body, wherein the nozzle body is provided with a liquid outlet atomization hole, the vortex nozzle core is provided with a liquid inlet hole corresponding to the liquid outlet atomization hole, and the vortex nozzle core is provided with a liquid inlet channel, a flow dividing cavity and a vortex cavity in sequence from the liquid inlet hole end to the other end; A plurality of flow diversion openings are arranged on the peripheral side of the diversion cavity, and a plurality of eddy flow channels are arranged on the peripheral side of the vortex cavity.

2. A swirl cone nozzle according to claim 1, characterized in that: The number of the vortex channels is the same as the number of the diverter ports, and the vortex channels and the diverter ports are staggered so that the vortex channels and the diverter ports are distributed in a spiral line around the vortex nozzle core.

3. A swirl cone nozzle according to claim 1 or 2, characterized in that: The vortex chamber has a plurality of arc surfaces on its circumference, and the vortex channel is tangent to the arc surfaces of the vortex chamber.

4. A swirl cone nozzle according to any one of claims 1 to 3, characterized in that: The segment of the diversion cavity provided in the vortex nozzle core is in a frustum structure.

5. The swirl cone nozzle according to claim 1, characterized in that: A cavity is arranged inside the nozzle body, and the flow diversion port and the vortex channel are both connected to the cavity; The outer side of the vortex nozzle core cooperates with the inner wall of the cavity through a sealing ring.

6. A swirl cone nozzle according to claim 5, characterized in that: The vortex nozzle core is provided with a clamping groove, one end of the nozzle body is clamped with the clamping groove, and the main body of the vortex nozzle core extends into the cavity of the nozzle body.

7. The swirl cone nozzle according to claim 1, characterized in that: An expansion opening is arranged outside the liquid outlet atomization hole.

8. A vortex cone nozzle, characterized in that: It comprises the conical nozzle as described in any one of claims 1-8.

9. A vortex cone nozzle according to claim 8, characterized in that: It also includes a nozzle body, a nozzle cap and an anti-drip valve. The conical nozzle is installed at the nozzle body outlet through the nozzle cap, and the anti-drip valve is installed at one side of the nozzle body.

10. A vortex cone nozzle according to claim 9, characterized in that: A filter screen is installed in the inner cavity of the nozzle body.

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