Gas-liquid mixing injection atomizing nozzle

Abstract

The utility model discloses a gas-liquid mixing injection atomizing nozzle which comprises a nozzle body of a three-way structure, a gas inlet end, a liquid inlet end and a gas-liquid output end are arranged on the nozzle body, the gas inlet end is externally connected with a gas source, the liquid inlet end is used for being externally connected with liquid medicine, and the gas inlet end and the liquid inlet end are respectively communicated with the gas-liquid output end. A spiral nozzle is arranged at the gas-liquid output end; a venturi tube is arranged in the spray head main body, the gas inlet end and the liquid inlet end are communicated through the venturi tube, the venturi tube comprises a contraction section, an acceleration section and a diffusion section which are sequentially connected, the gas inlet end and the liquid inlet end are respectively connected with the contraction section, and the gas-liquid output end is connected with the diffusion section. According to the utility model, the atomization effect of liquid medicine can be improved; furthermore, the contact area of the liquid medicine and the flue gas is increased, the reaction efficiency is improved, the generation of nitrogen oxides and sulfides is effectively inhibited, and the environmental protection performance is improved. Moreover, the atomized liquid medicine can also reduce temperature loss, so that the combustion efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage incineration technical field, concretely relates to a gas -liquid mixed injection atomizing spray head. BACKGROUND

[0002] The garbage incinerator is a kind of device for carrying out incineration treatment to solid waste, and the existing garbage incinerator is prone to generating nitrogen oxides and sulfides due to excessive oxygen combustion during working process, and nitrogen oxides and sulfides and the like can be discharged into the atmosphere with flue gas, causing secondary pollution.In order to reduce nitrogen oxides and sulfides in the flue gas, the medicine water is usually sprayed into the furnace during the process of garbage incineration, and the chemical reaction between the medicine water and nitrogen oxides and sulfides is carried out, so as to reduce nitrogen oxides and sulfides in the flue gas and improve environmental protection performance.

[0003] The prior art is usually directly using the spray head to spray medicine water into the garbage incinerator.However, the existing spray head structure has poor atomization effect, which leads to insufficient contact area between the medicine liquid and flue gas, reduces the reaction efficiency, on the other hand, the unvaporized medicine liquid absorbs heat, causing serious temperature loss in the garbage incinerator, affecting the combustion efficiency. UTILITY MODEL CONTENTS

[0004] In order to solve the problems existing in the prior art, the utility model provides a gas-liquid mixed injection atomizing spray head, which comprises a spray head body of three-way structure, a gas inlet end, a liquid inlet end and a gas-liquid output end are arranged on the spray head body, the gas inlet end is connected with a gas source, the liquid inlet end is used for connecting with medicine liquid, the gas inlet end and the liquid inlet end are respectively connected with the gas-liquid output end, and the gas-liquid output end is provided with a spiral nozzle.

[0005] As a further improvement of the utility model, the liquid inlet end is provided with a liquid regulating valve.

[0006] As a further improvement of the utility model, the input end of the liquid regulating valve is provided with a water pipe joint.

[0007] As a further improvement of the utility model, the liquid inlet end is provided with a hydraulic pressure gauge.

[0008] As a further improvement of the utility model, the gas inlet end is provided with a gas nozzle, the gas nozzle is sealingly connected with the spray head body, and the gas nozzle is connected with the convergent section.

[0009] As a further improvement of the utility model, the air nozzle is provided with an air pressure adjusting valve at one end away from the nozzle body.

[0010] As a further improvement of the utility model, the air pressure adjusting valve is provided with an air pipe joint at the input end.

[0011] As a further improvement of the utility model, the air nozzle is provided with an air pressure gauge.

[0012] As a further improvement of the utility model, the spiral nozzle is detachably connected with the gas-liquid output end.

[0013] As a further improvement of the utility model, the spiral nozzle is provided with a connecting flange, and the connecting flange is connected with the gas-liquid output end.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The Venturi tube and the spiral nozzle are combined to realize high-speed mixing and atomization of the liquid medicine and the gas, improve the atomization effect of the liquid medicine, increase the contact area of the liquid medicine and the flue gas during work, improve the reaction efficiency, effectively inhibit the generation of nitrogen oxides and sulfides, and improve the environmental protection performance. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can obtain other drawings according to the drawings without creative labor.

[0017] Fig. 1 is a schematic diagram of the external structure of the embodiment of the utility model;

[0018] Fig. 2 is a schematic diagram of the internal structure of the embodiment of the utility model. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of terms such as "comprise", "comprises", "comprising", "containing", "contains", "contain" or any other variation thereof, is intended to cover a non-exclusive inclusion, such that these terms are used in their broadest context to include a variety of embodiments. The use herein of terms such as "first", "second" and the like, merely denote different instances of a similar object unless the context clearly indicates otherwise.

[0020] Reference to "an embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in another embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to a particular preceding or following embodiment, nor are they necessarily alternatives.

[0021] For those skilled in the technical field, the technical solutions of the present application will be better understood from the following detailed description of the embodiments of the present application, with reference to the accompanying drawings.

[0022] As shown in Figs. 1-2 A gas-liquid mixed injection atomizing nozzle, comprising a three-way nozzle body 1, a gas inlet end 2, a liquid inlet end 3 and a gas-liquid outlet end 4 are arranged on the nozzle body 1, the gas inlet end 2 is used for connecting a gas source, the liquid inlet end 3 is used for connecting a liquid medicine, the gas inlet end 2 and the liquid inlet end 3 are respectively connected with the gas-liquid outlet end 4, and the gas-liquid outlet end 4 is provided with a spiral nozzle 5; in operation, the gas and the liquid medicine can be mixed and atomized in the nozzle body 1 and sprayed out through the gas-liquid outlet end 4.

[0023] In order to make the gas and the liquid medicine fully mixed and atomized, a Venturi tube 6 is arranged in the nozzle body 1, the gas inlet end 2 and the liquid inlet end 3 are connected through the Venturi tube 6, the Venturi tube 6 comprises a converging section 61, an accelerating section 62 and a diffusing section 63 connected in sequence, the gas inlet end 2 and the liquid inlet end 3 are respectively connected with the converging section 61, and the gas-liquid outlet end 4 is connected with the diffusing section 63.

[0024] In use, gas flows into the spray head body 1 from the gas inlet end 2, and liquid medicine flows into the spray head body 1 from the liquid inlet end 3. The gas and the liquid medicine are mixed in the convergent section 61 of the Venturi tube 6. When the gas-liquid mixture passes through the convergent section 61, the flow rate increases due to the increase in the cross-sectional area, and the gas-liquid mixture is injected. The gas-liquid mixture is continuously accelerated through the accelerating section 62, and then homogenized through the diffuser section 63. The gas-liquid mixture is then atomized by the spiral nozzle 5 and sprayed into the incinerator. Because the flow rate increases, the mixing effect and the atomization effect of the gas-liquid mixture are improved, and the coverage range of the gas-liquid atomization is expanded.

[0025] The gas-liquid mixing injection atomizing spray head combines the effects of the Venturi tube 6 and the spiral nozzle 5, allowing the liquid medicine and the gas to be mixed and atomized at high speed. This improves the atomization effect of the liquid medicine, increases the contact area between the liquid medicine and the flue gas, improves the reaction efficiency, effectively suppresses the generation of nitrogen oxides and sulfides, and improves the environmental performance. Moreover, the atomized liquid medicine can also reduce the temperature loss in the waste incinerator, thereby improving the combustion efficiency.

[0026] The liquid inlet end 3 is provided with a liquid regulating valve 7 for adjusting the pressure of the liquid medicine flowing into the liquid inlet end 3. The gas inlet end 2 is provided with a gas nozzle 8 that is sealingly connected to the spray head body 1. The gas nozzle 8 is connected to the convergent section 61, and gas is injected into the convergent section 61 through the gas nozzle 8 to increase the initial velocity of the gas. The end of the gas nozzle 8 away from the spray head body 1 is provided with a gas pressure regulating valve 9 for adjusting the pressure of the gas flowing into the gas inlet end 2. By setting the liquid regulating valve 7 and the gas pressure regulating valve 9, the pressure of the liquid medicine and the pressure of the gas flowing into the spray head body 1 can be adjusted in real time, thereby adjusting the atomization of the gas-liquid mixture. The atomization effect of the gas-liquid mixture can be reasonably matched with the combustion system, thereby achieving full and complete combustion and meeting environmental requirements.

[0027] In order to real-time understand the gas pressure and liquid pressure, a hydraulic pressure gauge 10 is arranged on the liquid inlet end 3, and a gas pressure gauge 11 is arranged on the gas nozzle 8. The gas pressure and the liquid pressure flowing into the spray head body 1 can be real-time understood through the hydraulic pressure gauge 10 and the gas pressure gauge 11, thereby realizing a visual adjustment process and improving the practicability.

[0028] In order to facilitate the connection of liquid medicine and gas, a water pipe joint 12 is arranged on the input end of the liquid regulating valve 7, and the water pipe joint 12 is used to externally connect a liquid tank. A gas pipe joint 13 is arranged on the input end of the gas pressure regulating valve 9, and the gas pipe joint 13 is used to externally connect a compressed gas source. Compressed gas is output to the gas pipe joint 13, and then flows into the gas pressure regulating valve 9 and the spray head body 1 in sequence.

[0029] The spiral nozzle 5 is provided with a spiral structure at the end away from the nozzle body 1. The gas-liquid mixture after atomization flows through the spiral structure and is further accelerated. The accelerated gas-liquid mixture is sprayed into the incinerator, and the acceleration of the spiral nozzle 5 enables the atomized gas-liquid mixture to fully contact with the flue gas in the incinerator, accelerates the reaction, and improves the purification effect.

[0030] In order to facilitate maintenance and replacement, the spiral nozzle 5 and the nozzle body 1 are connected in a detachable manner. In the embodiment, a connecting flange 14 is arranged at the end of the spiral nozzle 5 close to the nozzle body 1. The connecting flange 14 is fixedly connected with the gas-liquid output end 4 of the nozzle body 1 by screws. In other embodiments, the spiral nozzle and the nozzle body 1 can also adopt any one of the existing detachable connection modes; for example, clamping, screwing, etc.

[0031] Working principle:

[0032] Before work, the gas pipe joint 13 is connected with the external high-pressure gas source through the pipeline, and the water pipe joint 12 is connected with the external liquid medicine through the pipeline.

[0033] During work, the compressed gas flows into the gas nozzle 8 through the gas pipe joint 13, and is sprayed into the converging section 61 of the Venturi tube 6 through the gas nozzle 8. The gas is accelerated after passing through the Venturi tube 6, and then is induced to produce negative pressure in the nozzle body 1, so that the liquid medicine is sucked from the water pipe joint 12. Then, the liquid medicine flows into the converging section 61 of the Venturi tube 6 through the liquid inlet end 3, and is mixed with the gas in the converging section 61 of the Venturi tube 6. Then, the gas and the liquid medicine are accelerated and mixed and atomized through the converging section 61 and the accelerating section 62. Then, they are homogenized through the diffuser section 63, and then are accelerated and sprayed into the incinerator through the spiral nozzle 5. The acceleration and mixing and atomization through the Venturi tube 6 can improve the gas-liquid mixing and atomization effect, and then the accelerated spraying through the spiral nozzle 5 enables the gas-liquid mixture to quickly contact and react with the flue gas in the incinerator, thereby improving the purification effect.

[0034] During work, the user can know the gas pressure and liquid pressure in the nozzle body 1 in real time through the gas pressure gauge 11 and the liquid pressure gauge 10. If the atomization effect or the mixing effect is not good, the pressure of the liquid medicine and the pressure of the gas flowing into the nozzle body 1 can be adjusted in time through the liquid adjusting valve 7 or the gas pressure adjusting valve 9, so as to ensure the atomization effect. The adjustable and controllable atomization degree can be reasonably matched with the combustion system, so as to achieve sufficient and complete combustion and meet the environmental protection requirements.

[0035] The specific embodiments described above are the preferred embodiments of the utility model, and the specific implementation range of the utility model is not limited thereto. The scope of the utility model includes but is not limited to the specific embodiments. Any equivalent changes made according to the utility model are within the protection scope of the utility model.

Claims

1. A gas-liquid mixing eductive atomizing nozzle, characterized by: The nozzle body comprises a tee structure, a gas inlet end, a liquid inlet end and a gas-liquid outlet end, the gas inlet end is connected with a gas source, the liquid inlet end is connected with a liquid, the gas inlet end and the liquid inlet end are connected with the gas-liquid outlet end, and the gas-liquid outlet end is provided with a spiral nozzle. A Venturi tube is arranged in the nozzle body, the gas inlet end and the liquid inlet end are connected with the Venturi tube, the Venturi tube comprises a converging section, an accelerating section and a diffusing section connected in sequence, the gas inlet end and the liquid inlet end are connected with the converging section, and the gas-liquid outlet end is connected with the diffusing section.

2. The gas-liquid mixing ejection atomizing nozzle according to claim 1, characterized in that: The liquid inlet end is provided with a liquid regulating valve.

3. The gas-liquid mixing ejection atomizing nozzle according to claim 2, characterized in that: An input end of the liquid regulating valve is provided with a water pipe joint.

4. The gas-liquid mixing ejection atomizing nozzle according to claim 2, characterized in that: The liquid inlet end is provided with a hydraulic pressure gauge.

5. The gas-liquid mixing ejection atomizing nozzle according to claim 1, characterized in that: The gas inlet end is provided with a gas nozzle, the gas nozzle is connected with the nozzle body in a sealed manner, and the gas nozzle is connected with the converging section.

6. The gas-liquid mixing ejection atomizing nozzle according to claim 5, characterized in that: An end of the gas nozzle away from the nozzle body is provided with a gas pressure regulating valve.

7. The gas-liquid mixing ejection atomizing nozzle according to claim 6, characterized in that: An input end of the gas pressure regulating valve is provided with a gas pipe joint.

8. The gas-liquid mixing ejection atomizing nozzle according to claim 5, characterized in that: The gas nozzle is provided with a gas pressure gauge.

9. The gas-liquid mixing eductive atomizing showerhead according to any one of claims 1-8, characterized in that: The spiral nozzle is detachably connected with the gas-liquid outlet end.

10. The gas-liquid mixing ejection atomizing nozzle according to claim 9, characterized in that: The spiral nozzle is provided with a connecting flange, and the connecting flange is connected with the gas-liquid outlet end.

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