Waste liquid spray gun for various liquids

Abstract

The invention provides a waste liquid spray gun for various liquids, and relates to a spray gun structure, the waste liquid spray gun comprises at least two groups of waste liquid pipes sequentially sleeved and distributed from inside to outside and an atomizing outer pipe sleeved outside the outmost layer of waste liquid pipe, and two ends of the atomizing outer pipe are respectively provided with a group of sealing boxes and a group of nozzle units. The sealing box is further internally provided with step grooves in threaded connection with the waste liquid pipes correspondingly, the sealing box is further provided with liquid inlets used for being independently communicated with the corresponding waste liquid pipes, the atomization outer pipe is provided with an air inlet communicated with a gas cavity channel between the atomization outer pipe and the waste liquid pipe on the outermost layer, and compressed air or steam is introduced into the air inlet. The spray gun can adapt to two or more kinds of liquid, different kinds of liquid can be guided in simultaneously or independently, different media do not affect each other in the spray gun, and the spray gun is better in installation flexibility and use flexibility.

Description

Technical Field

[0001] The present invention relates to a spray gun structure, in particular to a waste liquid spray gun for multiple liquids. Background Art

[0002] With the acceleration of the industrialization process, a large amount of waste liquid has been generated in various industrial production activities such as the chemical industry, electroplating, papermaking, printing and dyeing, and pharmaceutical industries. The composition of this waste liquid is complex and may contain harmful substances such as heavy metals, organic substances, acid-base substances, and radioactive substances. If directly discharged without treatment, it will cause serious pollution to environmental elements such as water bodies, soil, and the atmosphere, and further affect the ecological balance and human health. For example, the waste liquid in the chemical industry may contain organic solvents such as benzene, toluene, and xylene, as well as various chemical raw materials, which are toxic and carcinogenic; electroplating waste liquid often contains heavy metal ions such as chromium, nickel, copper, and zinc, which will accumulate in the soil and water bodies and have a chronic toxic effect on organisms;

[0003] The spray guns in the prior art generally only atomize one kind of waste liquid. As shown in a patent for a waste liquid atomizing spray gun (publication number: CN102861686A), due to the limitations of the burner body during its use, it cannot burn multiple waste liquids simultaneously, and it is not convenient enough during use. Summary of the Invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a waste liquid spray gun for multiple liquids, which can adapt to two or more liquids. Different liquids can be introduced simultaneously or separately, and different media do not affect each other inside the spray gun, and both the installation flexibility and the use flexibility are better.

[0005] The present invention provides the following technical solutions:

[0006] A waste liquid spray gun for multiple liquids, comprising at least two groups of waste liquid pipes sleeved and distributed in sequence from the inside out and an atomizing outer pipe sleeved outside the outermost waste liquid pipe. The waste liquid pipes and the atomizing outer pipe are coaxially distributed, and the two ends of the waste liquid pipe located in the inner layer extend out from the two ends of the waste liquid pipe in its outer layer. A group of sealing boxes and a group of nozzle units are respectively arranged at the two ends of the atomizing outer pipe. The sealing box is plugged and connected to the tail end of the atomizing outer pipe, and the nozzle unit is plugged and connected to the head end of the atomizing outer pipe. A stepped groove for threaded connection corresponding to each group of waste liquid pipes is further arranged in the sealing box. A liquid inlet for separately communicating with the corresponding waste liquid pipe is arranged on the sealing box. An air inlet for communicating the gas cavity between the atomizing outer pipe and the outermost waste liquid pipe is arranged on the atomizing outer pipe. Compressed air or steam is introduced into the air inlet, and the waste liquid to be ejected and burned is introduced into the waste liquid pipe. The nozzle unit is provided with channel openings separately corresponding to each group of waste liquid pipes and the gas cavity. When the high-speed compressed air or steam impacts against the liquid at the outlet of the nozzle unit, the kinetic energy of the gas will be transferred to the liquid, resulting in strong shear force and disturbance on the liquid surface to break the liquid into fine droplets, forming an atomizing effect.

[0007] Preferably, the nozzle unit includes a nozzle head butted against the end side of each layer of waste liquid pipe for the separate liquid outlet of each layer of waste liquid pipe, a body connected to the outside of the nozzle head, and an adjusting ring connected to one end of the body far from the atomizing outer pipe. An annular air duct outlet is formed between the adjusting ring and the body. The body abuts against the head end side of the atomizing outer pipe and is provided with a first transition through hole for communicating the atomizing outer pipe and the air duct outlet. Therefore, the gas can flow out through the first transition through hole, and the waste liquid in each group of waste liquid pipes can be separately ejected from the nozzle head and only forms an impact against the gas after being ejected from the nozzle head, thereby avoiding the mutual influence of the liquids between the waste liquid pipes.

[0008] Preferably, a plurality of groups of the first transition through holes are arranged in an annular distribution, and the annular center formed by the plurality of groups of the first transition through holes is coaxially arranged with the waste liquid pipe and the atomizing outer pipe. Thus, when the gas flows to the body, it can be blocked by the annular retaining wall to form high pressure. The high-pressure air flow then flows out through the first transition through hole and forms a pressure drop at the outlet. The pressure drop causes the bubbles to expand violently, release energy, and further promote the atomization of the liquid.

[0009] Preferably, two groups of waste liquid pipes are provided. The nozzle head includes an ejection unit butted against the end of the outermost waste liquid pipe and a hemispherical unit connected to the end of the ejection unit. The hemispherical unit has a blocking plane parallel to the end of the ejection unit and having an ejection gap. A central channel for communicating the innermost waste liquid pipe and the ejection gap is arranged at the center of the ejection unit. An annular waste liquid outlet is further formed between the ejection unit and the body. The ejection unit is further provided with a second transition through hole for communicating the outermost waste liquid pipe and the waste liquid outlet. The blocking plane is used to axially block the fluids of the waste liquid outlet and the central channel to form an impact against the outgoing gas at the outer air duct outlet.

[0010] Preferably, the transition through hole 2 is provided with multiple groups distributed in an annular shape, and the annular center formed by the multiple groups of transition through holes 2 is coaxially arranged with the waste liquid pipe and the atomization outer tube. Thus, when the liquid flows to the nozzle, it can also be blocked by the annular baffle wall to form high pressure. The high-pressure water flow then flows out through the transition through hole 2 and forms a pressure drop at the outlet. The gas-liquid mixture produces a pressure drop at the nozzle outlet, which can increase the bubble expansion energy, release energy, and further promote liquid atomization.

[0011] Preferably, three groups of waste liquid pipes are arranged, and an intermediate layer of waste liquid pipes is added between the innermost layer of waste liquid pipes and the outermost layer of waste liquid pipes. The ejection unit has a step ring for abutting against the intermediate layer of waste liquid pipes, and multiple groups of transition through holes three are distributed circumferentially along the step ring. An annular through groove opening connected with the intermediate layer of waste liquid pipes and the transition through hole three is also arranged in the ejection unit, and the waste liquid discharged from the same annular groove opening is also axially blocked and redirected by the blocking plane to form a counter-attack with the outlet gas of the outer layer airway outlet.

[0012] Preferably, the sealing box includes three groups of box body units which are detachably connected to each other via connecting pieces in sequence, the three groups of box body units are box body unit one, box body unit two, and box body unit three in sequence, box body unit one is provided with a slot one which is threadedly connected to the end of the innermost waste liquid pipe, box body unit two is provided with a slot two which is threadedly connected to the end of the middle waste liquid pipe, box body unit three is provided with a slot three which is threadedly connected to the end of the innermost waste liquid pipe, three groups of liquid inlets are provided, and are respectively located on box body unit one, box body unit two, and box body unit three, so as to supply liquid to the three groups of waste liquid pipes separately, and due to the detachable connection mode of the three groups of box body units, flexible addition and subtraction operations can be performed to adapt to the flexible modification of various waste liquids.

[0013] Preferably, the connecting parts are provided with two groups, and are respectively installed outside the box body unit one and the box body unit two, and the connecting parts include a swivel and a screw-on ring. The swivel is installed outside the corresponding box body unit one and the box body unit two, while the screw-on ring is correspondingly screw-on installed outside an adjacent group of box body units.

[0014] Preferably, a group of spherical mounting blocks are fixed outside the atomizing outer tube, and the atomizing outer tube is set to penetrate the center of the spherical mounting block. A group of spherical outer packages are connected to the outside of the spherical mounting block, and the spherical outer packages are fixedly mounted on the mounting frame. A group of gears driven to rotate by a micro motor are respectively installed in the spherical mounting block and the spherical outer packages. An arc segment gear ring 1 meshing with the gear inside the spherical mounting block is arranged in the spherical outer packages, and an arc segment gear ring 2 meshing with the gear inside the spherical outer packages is arranged on the mounting frame. The arc centers of the arc segment gear ring 1 and the arc segment gear ring 2 are concentric with the spheres of the spherical mounting block and the spherical outer packages, and the arc segment gear ring 1 and the arc segment gear ring 2 are staggered and distributed at right angles.

[0015] Thus, the waste liquid spray gun can be automatically swung and adjusted at a certain angle around the sphere of the spherical mounting block and the spherical outer wrapping block, so as to improve the flexible adaptability of the spray gun angle.

[0016] The beneficial effects of the present invention are as follows: A waste liquid spray gun for multiple liquids provided by the present invention can adapt to two or more liquids. Different liquids can be introduced simultaneously or separately, and different media do not affect each other inside the spray gun, and both the installation flexibility and the use flexibility are better;

[0017] During use, compressed air or steam can enter from the air inlet, and different liquids can be introduced into different liquid inlets. The gas and the liquid respectively enter the nozzle unit along the axis through the atomizing outer tube and the corresponding waste liquid tube. Inside the nozzle unit, there are passage openings separately corresponding to each group of waste liquid tubes and gas channels, so as to realize the mixed impact of the gas and the liquid at the outlet. That is, when the high-speed compressed air or steam impacts with the liquid at the outlet of the nozzle unit, the kinetic energy of the gas will be transferred to the liquid, resulting in strong shear force and disturbance on the liquid surface to break the liquid into fine droplets, forming an atomization effect, so as to achieve the purpose of uniform mixing, and there is no mutual influence between them, and the flexibility is also stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is a structural sectional view of the present invention;

[0020] Figure 2 is a structural schematic diagram of the main body;

[0021] Figure 3 is a structural sectional view of the main body;

[0022] Figure 4 is a structural schematic diagram of the nozzle;

[0023] Figure 5 is a structural sectional view of the nozzle;

[0024] Figure 6 is a structural schematic diagram of the hemisphere unit;

[0025] Figure 7 is a structural sectional view of the adjusting ring;

[0026] Figure 8 is a structural sectional view of the present invention in Embodiment 2;

[0027] Figure 9 is a structural schematic diagram of the sealing box in Embodiment 3;

[0028] Figure 10 is a structural sectional view of the transverse section of the present invention in Embodiment 4;

[0029] Figure 11 is a structural sectional view of the longitudinal section of the present invention in Embodiment 4;

[0030] Markings in the figure:

[0031] 1. outermost waste liquid pipe; 2. innermost waste liquid pipe; 3. intermediate waste liquid pipe; 4. atomizing outer pipe; 5. sealing box; 6. nozzle unit; 7. spherical mounting block; 8. spherical outer wrapping block; 9. mounting frame; 10. gear; 11. arc-shaped gear ring one; 12. arc-shaped gear ring two; 51. liquid inlet; 52. air inlet; 53. box body unit one; 54. box body unit two; 55. box body unit three; 56. rotating ring; 57. screwed ring; 61. nozzle; 62. adjusting ring; 63. body; 64. air passage outlet; 65. transition through hole one; 611. spraying unit; 612. hemispherical body unit; 613. central channel; 614. spraying gap; 615. waste liquid outlet; 616. transition through hole two; 617. stepped ring; 618. transition through hole three; 619. circumferential groove opening. Detailed implementation manners

[0032] Embodiment 1

[0033] As Figures 1-7 shown, a waste liquid spray gun for multiple liquids, in this embodiment, includes at least two groups of waste liquid pipes sleeved and distributed in sequence from inside to outside and an atomizing outer pipe 4 sleeved outside the outermost waste liquid pipe 1. The waste liquid pipes and the atomizing outer pipe 4 are coaxially distributed, and both ends of the waste liquid pipe located in the inner layer extend out from both ends of the waste liquid pipe in its outer layer. One group of sealing boxes 5 and one group of nozzle units 6 are respectively arranged at both ends of the atomizing outer pipe 4. The sealing box 5 is sealingly connected to the tail end of the atomizing outer pipe 4, and the nozzle unit 6 is sealingly connected to the head end of the atomizing outer pipe. Moreover, a stepped groove corresponding to the threaded connection of each group of waste liquid pipes is arranged in the sealing box 5. A liquid inlet 51 for separately communicating with the corresponding waste liquid pipe is arranged on the sealing box 5. An air inlet 52 for communicating the gas cavity between the atomizing outer pipe 4 and the outermost waste liquid pipe 1 is arranged on the atomizing outer pipe 4. Compressed air or steam is introduced into the air inlet 52, and the waste liquid to be sprayed and burned is introduced into the waste liquid pipe. The nozzle unit 6 is provided with channel openings separately corresponding to each group of waste liquid pipes and the gas cavity. When the high-speed compressed air or steam collides with the liquid at the outlet of the nozzle unit 6, the kinetic energy of the gas will be transferred to the liquid, resulting in strong shear force and disturbance on the liquid surface to break the liquid into fine droplets, forming an atomization effect.

[0034] The nozzle unit 6 includes a nozzle head 61 docked at the end side of each layer of waste liquid pipe for separate liquid discharge of each layer of waste liquid pipe, a main body 63 connected to the outside of the nozzle head 61, and an adjusting ring 62 connected to one end of the main body 63 far from the atomizing outer pipe 4. An annular air passage outlet 64 is provided between the adjusting ring 62 and the main body 63. The main body 63 abuts against the end side of the head end of the atomizing outer pipe 4 and is provided with a first transition through hole 65 communicating the atomizing outer pipe 4 and the air passage outlet 64. Therefore, gas can flow out through the first transition through hole 65, and the waste liquid in each group of waste liquid pipes can be separately ejected from the nozzle head 61 and only form a counterflush with the gas after being ejected from the nozzle head 61, so as to avoid the mutual influence of the liquid between the waste liquid pipes.

[0035] The first transition through hole 65 is provided with multiple groups distributed in a ring shape, and the ring center formed by the multiple groups of first transition through holes 65 is coaxially arranged with the waste liquid pipe and the atomizing outer pipe 4. Thus, when the gas flows to the main body 63, it can be blocked by the annular baffle to form high pressure. The high-pressure air flow then flows out through the first transition through hole 65, and a pressure drop is formed at the outlet. The pressure drop causes the bubbles to expand violently, releasing energy and further promoting liquid atomization.

[0036] There are two groups of waste liquid pipes. The nozzle head 61 includes a spraying unit 611 abutting against the end of the outermost layer of waste liquid pipe 1 and a hemispherical unit 612 connected to the end of the spraying unit 611. The hemispherical unit 612 has a blocking plane parallel to the end of the spraying unit 611 and having a spraying gap 614. A central channel 613 communicating the innermost layer of waste liquid pipe 2 and the spraying gap 614 is provided at the center of the spraying unit 611. An annular waste liquid outlet 615 is further provided between the spraying unit 611 and the main body 63. The spraying unit 611 is also provided with a second transition through hole 616 communicating the outermost layer of waste liquid pipe 1 and the waste liquid outlet 615. The blocking plane is used to axially block the fluid of the waste liquid outlet 615 and the central channel 613 to form a counterflush with the air outlet of the outer layer air passage outlet 64.

[0037] The second transition through hole 616 is provided with multiple groups distributed in a ring shape, and the ring center formed by the multiple groups of second transition through holes 616 is coaxially arranged with the waste liquid pipe and the atomizing outer pipe 4. Thus, when the liquid flows to the nozzle head 61, it can also be blocked by the annular baffle to form high pressure. The high-pressure water flow then flows out through the second transition through hole 616, and a pressure drop is formed at the outlet. The pressure drop generated at the outlet of the gas-liquid mixture can increase the bubble expansion energy, release energy and further promote liquid atomization.

[0038] Embodiment 2

[0039] As Figure 8As shown, a waste liquid spray gun for multiple liquids, in this embodiment, different from the embodiment, three groups of waste liquid pipes are provided, and an intermediate layer of waste liquid pipe 3 is added between the innermost waste liquid pipe 2 and the outermost waste liquid pipe 1, and the spray unit 611 has a step ring 617 for abutting against the intermediate layer of waste liquid pipe 3, and multiple groups of transition through holes 618 are distributed circumferentially on the step ring 617, and an annular through groove 619 connected with the intermediate layer of waste liquid pipe 3 and the transition through hole 618 is also provided in the spray unit 611, and the waste liquid discharged from the annular groove is also axially blocked and redirected by the blocking plane to form a counter-attack with the outlet gas of the outer layer air duct outlet 64.

[0040] Example 3

[0041] like Figure 9 As shown, a waste liquid spray gun for multiple liquids, in this embodiment, is further defined based on Example 2, the sealing box 5 includes three groups of box body units that are detachably connected in sequence through connecting pieces, the three groups of box body units are box body unit one 53, box body unit two 54, and box body unit three 55 in sequence, the box body unit one 53 is provided with a slot one that is threadedly connected to the end of the innermost waste liquid pipe 2, the box body unit two 54 is provided with a slot two that is threadedly connected to the end of the middle waste liquid pipe 3, the box body unit three 55 is provided with a slot three that is threadedly connected to the end of the innermost waste liquid pipe 2, three groups of liquid inlets 51 are provided, and are respectively located on the box body unit one 53, the box body unit two 54, and the box body unit three 55, so as to supply liquid to the three groups of waste liquid pipes separately, and due to the detachable connection method of the three groups of box body units, flexible increase and decrease operations can be performed to adapt to the flexible modification of multiple waste liquids.

[0042] The connecting member is provided with two groups, and is respectively installed outside the box body unit 1 53 and the box body unit 2 54. The connecting member includes a swivel 56 and a screw-on ring 57. The swivel 56 is installed outside the corresponding box body unit 1 53 and the box body unit 2 54, and the screw-on ring 57 is correspondingly screw-on installed outside an adjacent group of box body units. Therefore, the box body unit 1 53, the box body unit 2 54, and the box body unit 3 55 can be abutted, approached or moved away from each other by rotating the connecting member forward and reversely.

[0043] Example 4

[0044] like Figures 10-11As shown in the figure, a waste liquid spray gun for multiple liquids. In this embodiment, it is a further limitation based on Embodiment 1. A set of spherical mounting blocks 7 are also fixed outside the atomizing outer tube 4. The atomizing outer tube 4 is arranged through the center of the spherical mounting blocks 7. A set of spherical outer covering blocks 8 are also connected outside the spherical mounting blocks 7. The spherical outer covering blocks 8 are fixedly installed on the mounting frame 9. A set of gears 10 driven by a micro motor to rotate are installed in each of the spherical mounting blocks 7 and the spherical outer covering blocks 8. An arc-shaped tooth ring one 11 meshing with the gear 10 in the spherical mounting block 7 is arranged inside the spherical outer covering block 8. An arc-shaped tooth ring two 12 meshing with the gear 10 in the spherical outer covering block 8 is arranged on the mounting frame 9. The arc centers of the arc-shaped tooth ring one 11 and the arc-shaped tooth ring two 12 are concentric with the sphere of the spherical mounting block 7 and the spherical outer covering block 8, and the arc-shaped tooth ring one 11 and the arc-shaped tooth ring two 12 are distributed in a right-angle offset manner;

[0045] Thus, the waste liquid spray gun can be automatically swung and adjusted by a certain angle around the sphere of the spherical mounting block 7 and the spherical outer covering block 8 to improve the flexible adaptability of the spray gun angle.

[0046] The working principle of the present invention is as follows: A waste liquid spray gun for multiple liquids provided by the present invention can adapt to two or more liquids. Different liquids can be introduced simultaneously or separately, and different media do not affect each other inside the spray gun, and both the installation flexibility and the use flexibility are better;

[0047] When in use, compressed air or steam can enter from the air inlet 52, and different liquids can be introduced into different liquid inlets 51. The gas and the liquid respectively enter the nozzle unit 6 along the axis through the atomizing outer tube 4 and the corresponding waste liquid tube. Inside the nozzle unit 6, there are channel openings corresponding to each waste liquid tube and gas cavity respectively, so as to realize the mixing and counter-flushing of the gas and the liquid at the outlet. That is, when the high-speed compressed air or steam counter-flushes with the liquid at the outlet of the nozzle unit 6, the kinetic energy of the gas will be transferred to the liquid, resulting in strong shear force and disturbance on the liquid surface to break the liquid into fine droplets, forming an atomization effect, so as to achieve the purpose of uniform mixing, and they do not affect each other, and the flexibility is also stronger.

[0048] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waste liquid spray gun for multiple liquids, characterized in that, It includes at least two sets of waste liquid pipes arranged coaxially from the inside outwards and an atomizing outer pipe sleeved outside the outermost waste liquid pipe. The waste liquid pipes and the atomizing outer pipe are coaxially distributed, and the two ends of the waste liquid pipe in the inner layer extend out from the two ends of the waste liquid pipe in its outer layer. A set of sealing boxes and a set of nozzle units are respectively arranged at the two ends of the atomizing outer pipe. The sealing box is sealingly connected to the tail end of the atomizing outer pipe, and the nozzle unit is sealingly connected to the head end of the atomizing outer pipe. A stepped groove for threadedly connecting each set of waste liquid pipes is also arranged in the sealing box. A liquid inlet for separately connecting the corresponding waste liquid pipe is arranged on the sealing box. An air inlet for connecting the gas chamber between the atomizing outer pipe and the outermost waste liquid pipe is arranged on the atomizing outer pipe. Compressed air or steam is introduced into the air inlet, and the waste liquid to be ejected and burned is introduced into the waste liquid pipe. The nozzle unit is provided with channel openings separately corresponding to each set of waste liquid pipes and the gas chamber.

2. The waste liquid spray gun for multiple liquids according to claim 1, wherein The nozzle unit includes a nozzle head butted against the end side of each layer of waste liquid pipe for each layer of waste liquid pipe to separately discharge liquid, a body connected to the outside of the nozzle head, and an adjusting ring connected to one end of the body away from the atomizing outer pipe. An annular air duct outlet is formed between the adjusting ring and the body. The body abuts against the head end side of the atomizing outer pipe and is provided with a first transition through hole for connecting the atomizing outer pipe and the air duct outlet.

3. The waste liquid spray gun for multiple liquids according to claim 2, wherein, A plurality of the first transition through holes are annularly distributed, and the annular center formed by the plurality of first transition through holes is coaxially arranged with the waste liquid pipe and the atomizing outer pipe.

4. A waste liquid spray gun for multiple liquids according to claim 2, characterized in that There are two sets of the waste liquid pipes. The nozzle head includes a discharging unit butted against the end of the outermost waste liquid pipe and a hemispherical unit connected to the end of the discharging unit. The hemispherical unit has a blocking plane parallel to the end of the discharging unit and having a discharging gap. A central channel for connecting the innermost waste liquid pipe and the discharging gap is arranged at the center of the discharging unit. An annular waste liquid outlet is formed between the discharging unit and the body. The discharging unit is also provided with a second transition through hole for connecting the outermost waste liquid pipe and the waste liquid outlet. The blocking plane is used to axially block the fluid of the waste liquid outlet and the central channel to form a counterflush with the air output of the outer air duct outlet.

5. The waste liquid spray gun for multiple liquids according to claim 4, characterized in that, A plurality of the second transition through holes are annularly distributed, and the annular center formed by the plurality of second transition through holes is coaxially arranged with the waste liquid pipe and the atomizing outer pipe.

6. A waste liquid spray gun for multiple liquids according to claim 4, characterized in that, There are three sets of the waste liquid pipes. An intermediate layer waste liquid pipe is added between the innermost waste liquid pipe and the outermost waste liquid pipe. The discharging unit has a stepped ring for butting against the intermediate layer waste liquid pipe. A plurality of third transition through holes are annularly distributed on the stepped ring. An annular through groove port for connecting the intermediate layer waste liquid pipe and the third transition through holes is also arranged in the discharging unit. The waste liquid discharged from the annular through groove port is also axially blocked and redirected by the blocking plane to form a counterflush with the air output of the outer air duct outlet.

7. The waste liquid spray gun for multiple liquids according to claim 6, characterized in that, The sealing box includes three groups of box body units which are detachably connected to each other through connecting pieces in sequence, the three groups of box body units are box body unit 1, box body unit 2, and box body unit 3 in sequence, box body unit 1 is provided with a notch 1 which is threadedly connected to the end of the innermost waste liquid pipe, box body unit 2 is provided with a notch 2 which is threadedly connected to the end of the middle waste liquid pipe, box body unit 3 is provided with a notch 3 which is threadedly connected to the end of the innermost waste liquid pipe, three groups of liquid inlets are provided, and are respectively located on box body unit 1, box body unit 2, and box body unit 3, so as to supply liquid to the three groups of waste liquid pipes separately.

8. A waste liquid spray gun for multiple liquids according to claim 7, characterized in that, The connecting parts are provided with two groups, and are respectively installed outside the box body unit 1 and the box body unit 2. The connecting parts include a swivel and a screw-on ring. The swivel is installed outside the corresponding box body unit 1 and the box body unit 2, while the screw-on ring is correspondingly screw-on installed outside an adjacent group of box body units.

9. A waste liquid spray gun for multiple liquids according to claim 1, characterized in that, A group of spherical mounting blocks are fixed outside the atomizing outer tube, and the atomizing outer tube is set to penetrate the center of the spherical mounting block. A group of spherical outer packaging blocks are connected to the outside of the spherical mounting block, and the spherical outer packaging block is fixedly mounted on the mounting frame. A group of gears driven to rotate by a micro motor are respectively installed in the spherical mounting block and the spherical outer packaging block. An arc segment gear ring 1 meshing with the gear inside the spherical mounting block is arranged in the spherical outer packaging block, and an arc segment gear ring 2 meshing with the gear inside the spherical outer packaging block is arranged on the mounting frame. The arc centers of the arc segment gear ring 1 and the arc segment gear ring 2 are concentric with the spheres of the spherical mounting block and the spherical outer packaging block, and the arc segment gear ring 1 and the arc segment gear ring 2 are staggered and distributed at right angles.

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