Multi-functional decontamination spray head

Abstract

The application discloses a multifunctional decontamination spray head and relates to the field of decontamination. The multifunctional decontamination spray head comprises a spray head upper cover, a sealing ring and a spray head body. The spray head body comprises an upper part, a middle part and a lower part which are integrally formed. The outer side of the lower part of the spray head body is an outer threaded surface connected with a decontamination device, and the inner side is a hollow cylindrical pipeline. A spray head cavity is in communication with a liquid inlet channel. Liquid enters the spray head from the liquid inlet channel, then flows to the spray head cavity and finally enters the upper part of the spray head body. The upper part of the spray head body is a liquid outlet part which comprises a spiral direct emission part and a spiral diffraction part. The multifunctional decontamination spray head can atomize and emit decontamination solution. Two use states are provided. One is a direct emission mode in which the decontamination device directly sprays the decontamination device towards a contaminated device. The other is a direct emission + diffraction mode. The decontamination spray head can form a protective barrier for decontamination personnel and protect the decontamination personnel from operation safety. The spraying mode discards the traditional direct emission mode and adopts a spiral jet mode, thereby further increasing the atomization effect and greatly improving the decontamination effect.

Description

Technical Field

[0001] This invention relates to the field of decontamination, specifically to a multifunctional decontamination nozzle, which is manufactured based on an additive or subtractive manufacturing method. Background Technology

[0002] Additive manufacturing technology is a rapidly developing advanced manufacturing technology in recent years. It has outstanding advantages such as simple forming process, saving raw materials, short production cycle, and the ability to form complex parts, and has attracted widespread attention from academia and industry. The rapid heating and cooling characteristics of additive manufacturing technology during the forming process make the produced workpieces have the characteristics of fine grain and dense structure compared with traditional workpieces. With appropriate heat treatment processes, excellent comprehensive mechanical properties can be achieved.

[0003] Existing decontamination devices involve fluid flow, cavitation, and splashing effects in specific pipelines. Due to the narrow interior of the nozzle and the high machining precision, most nozzles are generally produced by subtractive processing, and the jet form is direct spraying. This results in poor atomization and low water utilization efficiency. Moreover, in actual decontamination processes, they cannot form an effective atomization barrier to protect the safety of decontamination personnel.

[0004] Therefore, it is necessary to improve the nozzles of existing decontamination devices to solve the above problems. Summary of the Invention

[0005] In order to solve the problems of narrow internal nozzles in existing decontamination devices, most nozzles are generally manufactured using subtractive processing and direct jetting, resulting in poor atomization and low water utilization efficiency, this invention provides an improved multifunctional decontamination nozzle based on additive and subtractive manufacturing.

[0006] This invention is achieved through the following technical solution: a multifunctional decontamination nozzle, comprising a nozzle top cover, a sealing ring, and a nozzle body. The nozzle body comprises an integrally formed upper, middle, and lower portion. The outer surface of the lower portion of the nozzle body is an externally threaded surface for connection with a decontamination device, and the inner surface is a hollow cylindrical pipe. The nozzle body can be connected to the decontamination device, and the hollow cylindrical pipe serves as a liquid inlet channel. The outer surface of the middle portion of the nozzle body is hexagonal, and the inner surface is a cylindrical nozzle cavity. The diameter of the nozzle cavity is larger than the diameter of the liquid inlet channel. The nozzle cavity communicates with the liquid inlet channel. Liquid enters the nozzle from the liquid inlet channel, flows to the nozzle cavity, and finally enters the upper portion of the nozzle body.

[0007] The upper part of the nozzle body is the liquid ejection section, including a spiral direct-ejection section and a spiral diffraction section. The spiral direct-ejection section is located at the top of the spiral diffraction section. The outer side of the spiral direct-ejection section is cylindrical, while the outer side of the spiral diffraction section is a combination of a frustum and a cylinder. The bottom diameter of the frustum of the spiral diffraction section is the same as the outer diameter of the cylinder at its base, and the top diameter of the frustum of the spiral diffraction section is the same as the outer diameter of the cylinder of the spiral direct-ejection section. The outer surface of the cylinder of the spiral diffraction section has an external threaded surface for connection with the nozzle head cover. The spiral direct-ejection section causes the liquid to be ejected in a spiral, straight-ejection pattern for front-end decontamination of contaminated devices, while the spiral diffraction section causes the liquid to be ejected in a spiral, diffracted pattern to protect decontamination personnel from contamination. That is, the diffracted liquid or decontamination agent is located on the outer periphery of the directly ejected liquid, together forming all-round protection for decontamination personnel.

[0008] The spiral direct-fire section and the spiral diffraction section form an integral structure with a spiral direct-fire channel and a spiral diffraction channel on their inner side. Both the spiral direct-fire channel and the spiral diffraction channel are connected to the nozzle cavity. There is one spiral direct-fire channel, which is coaxial with the nozzle cavity. The channel wall of the spiral direct-fire channel has multiple flow channels that spiral upward in the same direction, and the cross-section of each flow channel is arc-shaped. The bottom of the spiral direct-fire channel is the direct-fire inlet, and the top is the direct-fire outlet. The direct-fire outlet is located at the center of the top surface of the spiral direct-fire section. The shape of the direct-fire outlet is a combination of an inverted truncated cone, a cylinder, and a truncated cone. The top of the direct-fire outlet is an inverted truncated cone, the middle is a cylinder, and the bottom is a truncated cone. The bottom diameter of the inverted truncated cone is the same as the top diameter of the cylinder and the truncated cone. The bottom diameter of the truncated cone matches the inner diameter of the channel wall of the spiral direct-fire channel, and the bottom diameter of the truncated cone is larger than the top diameter of the inverted truncated cone. The direct-fire outlet has a centrally constricted structure, from which liquid or decontaminant is sprayed forward. Under the action of spiral force and direct-fire pressure, the decontaminant is ejected to the maximum extent, ultimately achieving atomization and long-range blowing effects.

[0009] The structure comprises multiple spiral diffraction channels, each an independent liquid flow path. These channels, centered on the axis of the spiral direct-diffraction channel, form a network of evenly distributed, spiraling, ascending liquid flow paths in the same direction. Each spiral diffraction channel has a diffraction inlet at its bottom and a diffraction outlet at its top, located on the frustum-shaped surface of the spiral diffraction section. The cross-section of each spiral diffraction channel is a closed curve. The diffraction outlet is a composite-shaped aperture, with a frustum-shaped bottom, a cylindrical middle section, and an inverted trapezoidal elongated top. The diameter of the cylindrical aperture in the middle of the outlet is equal to the diameter of the top of the frustum-shaped bottom section. This structure is also a centrally constricted type; the frustum-shaped aperture facilitates the collection of liquid or decontaminant, while the elongated outer outlet allows the decontaminant to be sprayed out in a fan-shaped atomization pattern. The diffraction outlets of the multiple spiral diffraction channels provide comprehensive protection for decontamination personnel, preventing secondary contamination.

[0010] When the nozzle top cover is connected to the nozzle body, it is sealed by a sealing ring. The shape of the sealing ring matches the frustum shape of the spiral diffraction section and seals the diffraction outlet. The nozzle top cover seals the diffraction outlet by the sealing ring, so that the entire nozzle is only used for decontamination.

[0011] The main body of the multifunctional decontamination nozzle designed in this invention is formed by additive laser melting printing, which has a good forming effect on the complex internal spiral structure. It can get rid of the constraints of traditional subtractive processing, which cannot form complex internal structures. At the same time, the direct and diffraction outlets, which require high precision, are processed by subtractive processing, which can strictly control the processing precision. In addition, the surface roughness of the internal spiral structure of the decontamination nozzle is required to be high. A grinding and polishing process is used to ensure the smoothness of the interior.

[0012] Compared with existing technologies, the present invention has the following advantages: The multifunctional decontamination nozzle provided by the present invention adopts a laser additive manufacturing main structure and a subtractive processing method for the precision structure, which can ensure the overall forming of the complex internal spiral structure and the dimensional accuracy of the outlet, thus ensuring the atomization effect; the multifunctional decontamination nozzle has two usage modes: one is a direct spray mode, which directly sprays the decontamination device onto the contaminated device, and the other is a direct spray + diffraction mode, which can form a protective barrier for decontamination personnel, protecting their operational safety; the spraying method adopts a spiral jet method, and the direct spray part adopts a combination of spiral jet and direct spray, further increasing the atomization effect and significantly improving the decontamination effect. The diffraction outlet forms a fan-shaped atomization shape, ultimately providing all-round protection for decontamination personnel and preventing secondary contamination; the overall appearance of the present invention is simple and elegant, the layout is reasonable, the operation is convenient and quick, the spiral jet atomization effect is good, and it can effectively improve the use effect of the decontamination agent. Attached Figure Description

[0013] Figure 1 This is a diagram of the multi-functional decontamination nozzle in direct spray mode.

[0014] Figure 2 This is an exploded view of the multifunctional decontamination nozzle of the present invention.

[0015] Figure 3 This is a schematic diagram of the main body of the multi-functional decontamination nozzle in direct and diffraction modes.

[0016] Figure 4 This is a cross-sectional view of the main body of the multi-functional decontamination nozzle.

[0017] Figure 5 This is a cross-sectional view of the top direct outlet of the multi-functional decontamination nozzle.

[0018] Figure 6 This is a cross-sectional view of the nozzle cavity of a multi-functional decontamination nozzle.

[0019] Figure 7 This is a cross-sectional view of the spiral diffraction pipeline of a multi-functional decontamination nozzle.

[0020] Figure 8 This is a cross-sectional view of the spiral diffraction outlet of a multi-functional decontamination nozzle.

[0021] The markings in the diagram are as follows: 1-Sprayer head cover, 2-Sealing ring, 3-Sprayer body, 31-Liquid inlet channel, 32-Sprayer cavity, 33-Helical direct injection section, 34-Helical diffraction section, 331-Helical direct injection channel, 332-Direct injection inlet, 333-Direct injection outlet, 341-Helical diffraction channel, 342-Diffraction inlet, 343-Diffraction outlet. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments.

[0023] A multi-functional decontamination nozzle, such as Figures 1 to 3 As shown: It includes a nozzle cover 1, a sealing ring 2, and a nozzle body 3. The nozzle body 3 includes an integrally formed upper part, middle part, and lower part. The outer side of the lower part of the nozzle body 3 is an external threaded surface that connects to the decontamination device, and the inner side is a hollow cylindrical pipe. The hollow cylindrical pipe is a liquid inlet channel 31. The outer side of the middle part of the nozzle body 3 is hexagonal, and the inner side is a cylindrical nozzle cavity 32. The diameter of the nozzle cavity 32 is larger than the diameter of the liquid inlet channel 31. The nozzle cavity 32 is connected to the liquid inlet channel 31.

[0024] like Figure 3 and Figure 4As shown, the upper part of the nozzle body 3 is the liquid ejection section, including a spiral direct ejection section 33 and a spiral diffraction section 34; the spiral direct ejection section 33 is located at the top of the spiral diffraction section 34, the outer side of the spiral direct ejection section 33 is cylindrical, and the outer side of the spiral diffraction section 34 is a combination of a frustum and a cylinder. The bottom diameter of the frustum of the spiral diffraction section 34 is the same as the outer diameter of the cylinder at its bottom, and the top diameter of the frustum of the spiral diffraction section 34 is the same as the outer diameter of the cylinder of the spiral direct ejection section 33; the outer side of the cylinder of the spiral diffraction section 34 is provided with an external threaded surface that connects to the nozzle head cover 1.

[0025] like Figure 5 and Figure 6 As shown, the spiral direct-ejection section 33 and the spiral diffraction section 34 form an integral inner side with a spiral direct-ejection channel 331 and a spiral diffraction channel 341. Both the spiral direct-ejection channel 331 and the spiral diffraction channel 341 are connected to the nozzle cavity 32. There is one spiral direct-ejection channel 331, which is coaxial with the nozzle cavity 32. The channel wall of the spiral direct-ejection channel 331 is provided with multiple spiral upward flow channels in the same direction, and the cross-section of each flow channel is arc-shaped. The bottom of the spiral direct-ejection channel 331 is the direct-ejection inlet 3. 32. The top is a direct injection outlet 333, which is located at the center of the top surface of the spiral direct injection section 33. The shape of the direct injection outlet 333 is a combination of an inverted truncated cone, a cylinder, and a truncated cone. The top of the direct injection outlet 333 is an inverted truncated cone, the middle is a cylinder, and the bottom is a truncated cone. The bottom diameter of the inverted truncated cone is the same as the top diameter of the cylinder and the truncated cone. The bottom diameter of the truncated cone matches the inner diameter of the channel wall of the spiral direct injection channel 331, and the bottom diameter of the truncated cone is larger than the top diameter of the inverted truncated cone.

[0026] like Figure 6 , Figure 7 and Figure 8 As shown, the spiral diffraction channel 341 has multiple spiral diffraction channels, each of which is an independent liquid flow channel. These multiple spiral diffraction channels 341 form a series of evenly distributed, spiraling upward liquid flow channels in the same direction, with the axis of the spiral direct diffraction channel 331 as the axis. The bottom of each spiral diffraction channel 341 is a diffraction inlet 342, and the top is a diffraction outlet 343. The diffraction outlet 343 is located on the frustum-shaped surface of the spiral diffraction section 34. The cross-section of the spiral diffraction channel 341 is a closed curve. The diffraction outlet 343 is a combined-shape aperture. The bottom of the diffraction outlet 343 is frustum-shaped, the middle is cylindrical, and the top is an inverted trapezoidal elongated strip. The diameter of the cylindrical aperture in the middle of the diffraction outlet 343 is equal to the diameter of the top of its frustum-shaped bottom.

[0027] When the nozzle head cover 1 is connected to the nozzle body 3, it is sealed by a sealing ring 2. The shape of the sealing ring 2 matches the frustum-shaped cone of the spiral diffraction section 34, sealing the diffraction outlet 343. Figure 2 As shown.

[0028] In this embodiment, the following preferred scheme is adopted: the spiral direct-injection channel 331 has six spirally ascending channels on its channel wall in the same direction. The spiral diffraction channel 341 has four channels, and correspondingly, four diffraction outlets 343. The liquid sprayed by the multifunctional decontamination nozzle is a decontamination agent. The outer side of the nozzle top cover 1 is equipped with a hand-tightening anti-slip structure and a wrench structure. The nozzle body 3 is manufactured using additive laser melting printing, while the direct-injection outlet 333 and the diffraction outlet 343 are manufactured using a subtractive process.

[0029] The specific operation of this embodiment is as follows: When the multi-functional decontamination nozzle only works in direct spray mode, the nozzle cover 1 is screwed onto the nozzle body 3 through the sealing ring 2, so that the sealing ring 2 seals the diffraction outlet 343. Then the decontamination liquid is injected into the nozzle cavity 32 from the liquid inlet channel 31, and then enters the channel from the direct spray inlet 332 of the spiral direct spray channel 331. After passing through the spiral liquid flow channel of the channel wall, under the action of spiral force and direct spray pressure, it is sprayed outward from the direct spray outlet 333. At this time, it is only used for front-end decontamination of contaminated devices. This mode is mainly for the premise that the contaminated device cannot cause secondary harm to the decontamination personnel. When the nozzle cover 1 and sealing ring 2 of the multi-functional decontamination nozzle are completely removed from the nozzle body 3, the nozzle body 3 operates in direct injection + diffraction mode. The decontamination liquid is injected into the nozzle cavity 32 from the liquid inlet channel 31, and then enters the channel from the direct injection inlet 332 of the spiral direct injection channel 331. After passing through the spiral liquid flow channel of the channel wall, under the action of spiral force and direct injection pressure, the decontamination agent is ejected to the maximum extent, ultimately achieving the effect of atomization and blowing far, for front-end decontamination of contaminated devices. At the same time, the decontamination liquid flows in from the diffraction inlet 342 of the four spiral diffraction channels 341, and after passing through the spiral flow channel, it is sprayed out from the diffraction outlet 343. Due to the elongated structure at the diffraction outlet 343, the decontamination agent forms a fan-shaped atomization shape after being sprayed out. The water mist sprayed from the four diffraction outlets 343 provides all-round protection for decontamination personnel, preventing personnel from being contaminated. This mode is used when the contaminated device may cause secondary harm to the decontamination personnel.

[0030] The scope of protection claimed by this invention is not limited to the specific embodiments described above. Moreover, for those skilled in the art, this invention can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A multi-functional decontamination nozzle, characterized in that: The device includes a nozzle cover (1), a sealing ring (2), and a nozzle body (3). The nozzle body (3) includes an integrally formed upper, middle, and lower part. The lower outer side of the nozzle body (3) is an external threaded surface connected to the decontamination device, and the inner side is a hollow cylindrical pipe. The hollow cylindrical pipe is a liquid inlet channel (31). The middle outer side of the nozzle body (3) is hexagonal, and the inner side is a cylindrical nozzle cavity (32). The diameter of the nozzle cavity (32) is larger than the diameter of the liquid inlet channel (31). The nozzle cavity (32) is connected to the liquid inlet channel (31). The upper part of the nozzle body (3) is the liquid ejection part, including a spiral direct ejection part (33) and a spiral diffraction part (34); the spiral direct ejection part (33) is located at the top of the spiral diffraction part (34), the outer side of the spiral direct ejection part (33) is cylindrical, and the outer side of the spiral diffraction part (34) is a combination of a frustum and a cylinder. The bottom diameter of the frustum of the spiral diffraction part (34) is the same as the outer diameter of the cylinder at its bottom, and the top diameter of the frustum of the spiral diffraction part (34) is the same as the outer diameter of the cylinder of the spiral direct ejection part (33); the outer side of the cylinder of the spiral diffraction part (34) is provided with an external threaded surface that connects to the nozzle head cover (1); The spiral direct-fire section (33) and the spiral diffraction section (34) form an integral inner side with a spiral direct-fire channel (331) and a spiral diffraction channel (341). Both the spiral direct-fire channel (331) and the spiral diffraction channel (341) are connected to the nozzle cavity (32). There is one spiral direct-fire channel (331), which is coaxial with the nozzle cavity (32). The channel wall of the spiral direct-fire channel (331) is provided with multiple spiral upward flow channels in the same direction, and the cross-section of each flow channel is arc-shaped. The bottom of the spiral direct-fire channel (331) is for direct injection. The opening (332) and the top are direct injection outlets (333), which are located at the center of the top surface of the spiral direct injection section (33). The shape of the direct injection outlet (333) is a combination of an inverted truncated cone, a cylinder and a truncated cone. The top of the direct injection outlet (333) is an inverted truncated cone, the middle is a cylinder and the bottom is a truncated cone. The bottom diameter of the inverted truncated cone is the same as the top diameter of the cylinder and the truncated cone. The bottom diameter of the truncated cone matches the inner diameter of the channel wall of the spiral direct injection channel (331). Moreover, the bottom diameter of the truncated cone is larger than the top diameter of the inverted truncated cone. The spiral diffraction channel (341) is provided with multiple spiral diffraction channels (341), and each spiral diffraction channel (341) is an independent liquid flow channel. The multiple spiral diffraction channels (341) are arranged around the axis of the spiral direct diffraction channel (331) to form multiple spiral upward liquid flow channels in the same direction. The bottom of each spiral diffraction channel (341) is the diffraction inlet (342), and the top is the diffraction outlet (343). The diffraction outlet (343) is located on the frustum-shaped surface of the spiral diffraction section (34). The cross-section of the spiral diffraction channel (341) is a closed curve shape. The diffraction outlet (343) is a combined shape hole. The bottom of the diffraction outlet (343) is frustum-shaped, the middle part is cylindrical, and the top is an inverted trapezoidal strip. The diameter of the cylindrical hole in the middle of the diffraction outlet (343) is equal to the diameter of the top of its frustum-shaped bottom. When the nozzle head cover (1) is connected to the nozzle body (3), it is sealed by a sealing ring (2). The shape of the sealing ring (2) matches the frustum shape of the spiral diffraction section (34) and is sealed at the diffraction outlet (343).

2. The multifunctional decontamination nozzle according to claim 1, characterized in that: The spiral direct injection channel (331) has six spiral upward flow channels on its channel wall.

3. The multifunctional decontamination nozzle according to claim 1, characterized in that: The spiral diffraction channel (341) has four channels, and there are four corresponding diffraction exits (343).

4. The multifunctional decontamination nozzle according to claim 1, characterized in that: The direct outlet (333) of the spiral direct injection section (33) allows the liquid to be sprayed out to the maximum extent under the action of spiral force and direct injection pressure, ultimately achieving the effect of atomization and blowing far.

5. A multifunctional decontamination nozzle according to claim 1, characterized in that: The diffraction outlet (343) of the spiral diffraction section (34) causes the liquid to form a fan-shaped atomization after being ejected.

6. A multifunctional decontamination nozzle according to claim 1, characterized in that: The liquid sprayed by the multi-functional decontamination nozzle is a decontamination agent.

7. A multifunctional decontamination nozzle according to claim 1, characterized in that: The nozzle head cover (1) is provided with a hand-tightening anti-slip structure and a wrench structure on the outside.

8. A multifunctional decontamination nozzle according to claim 1, characterized in that: The nozzle body (3) is formed by additive laser melting printing, and the direct outlet (333) and diffraction outlet (343) are formed by subtractive processing.

Images