Static elimination device for improving mass concentration of particulate matters

Abstract

The utility model discloses a static elimination device for improving the mass concentration of particulate matters, and belongs to the technical field of liquid atomization. The problem that particles are easily adsorbed on the inner wall of the mixing cavity after liquid atomization is solved. One end of the airflow header pipe is an air inlet, and the other end of the airflow header pipe is connected with a main airflow pipe and a secondary airflow pipe in parallel; one ends of the main airflow pipe and the secondary airflow pipe away from the airflow header pipe are connected with the mixing chamber; an atomizer is arranged at the bottom of the mixing chamber, a water inlet of the atomizer is connected with a standard solution, and a nozzle of the atomizer is communicated with an inner cavity of the mixing chamber. According to the utility model, a standard solution is atomized into fine particle mist by the atomizer, the fine particle mist is mixed with the electrically neutral main airflow and the electrically neutral secondary airflow in the mixing chamber, and the fine particle mist is dried under the coercing and pushing of the two electrically neutral airflows, so that the particles are difficult to attach to the pipe wall, the loss of the particles is avoided, and the mass concentration of the particles is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid atomization, in particular to a static elimination device for increasing the mass concentration of particulate matter. Background Art

[0002] Ultrasonic atomization utilizes the high-frequency vibrational energy of ultrasound to break liquids into tiny droplets, creating a mist. The principle is that when ultrasound waves propagate through a liquid, they generate high-frequency vibrations, breaking the liquid into a mist of micron-sized particles through vertical waves. This high-frequency vibration induces back-and-forth displacement within the liquid, generating shear stress. When this shear stress exceeds the surface tension of the liquid, the liquid breaks into tiny droplets. The frequency of the ultrasound wave significantly influences the effectiveness of liquid fragmentation; higher frequencies generally result in better particle fragmentation. This fine mist of particles is then pushed and dried by the rising airflow, forming particles. However, during the atomization process, liquids are easily electrostatically charged, forming a cloud of charges. This results in a high level of static electricity in the fine mist. This static force causes the atomized particles to adhere to the inner walls of the chamber, leading to particle loss. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides an electrostatic eliminator for increasing the mass concentration of particulate matter, thereby solving the problem that particulate matter is easily adsorbed on the inner wall of the mixing chamber after liquid atomization.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A static elimination device for increasing the mass concentration of particulate matter includes an air flow main pipe, one end of which is an air inlet, and the other end of which is connected in parallel to a main air flow pipe and a secondary air flow pipe; the ends of the main air flow pipe and the secondary air flow pipe away from the air flow main pipe are connected to a mixing chamber;

[0006] An atomizer is provided at the bottom of the mixing chamber, a water inlet of the atomizer is connected to the standard solution, and a nozzle of the atomizer is communicated with the inner cavity of the mixing chamber.

[0007] In this scheme, the air flow is divided into two air flows after passing through the air flow main pipe, one is the main air flow and the other is the secondary air flow; after the standard solution is atomized into fine particle mist by the atomizer, the main air flow and the secondary air flow are mixed with the fine particle mist in the mixing chamber. Under the entrainment and push of the main air flow and the secondary air flow, the fine particle mist is dried, making it difficult for the particles to adhere to the pipe wall, avoiding the loss of particles and improving their mass concentration.

[0008] Furthermore, the mixing chamber includes an atomizing chamber, a mixing chamber and an outlet chamber, and the atomizer is arranged inside the atomizing chamber; the atomizing chamber is connected to the mixing chamber through a flange, and the mixing chamber is connected to the outlet chamber through a flange.

[0009] In this scheme, the standard solution is atomized by the atomizer in the atomization chamber, and then passes through the mixing chamber under the impetus of the primary airflow and the secondary airflow, and finally sprayed out from the outlet chamber.

[0010] Furthermore, a secondary air flow annular cavity is provided inside the atomizing cavity, and the secondary air flow annular cavity is arranged around the nozzle of the atomizer; a secondary air flow inlet is opened on the side wall of the atomizing cavity and is connected to the secondary air flow annular cavity, and the secondary air flow pipe is connected to the secondary air flow inlet;

[0011] A spacer ring is arranged around the nozzle of the atomizer, and a main airflow annular cavity is formed outside the spacer ring; a main airflow inlet communicating with the main airflow annular cavity is opened on the side wall of the atomizing cavity, and a main airflow pipe is connected to the main airflow inlet.

[0012] In this scheme, the standard solution is atomized into fine particle mist from the atomizer and then sprayed out. The sprayed fine particle mist is wrapped by the secondary airflow in the secondary airflow annular cavity. The fine particle mist is dried by the secondary airflow, and after being wrapped by the secondary airflow, it is sprayed out following the secondary airflow; after being sprayed out, it is mixed with the main airflow in the main airflow annular cavity, and the fine particle mist is dried again and sprayed out from the outlet cavity under the push of the main airflow; the drying of the particulate matter is achieved and the mass concentration of the particulate matter is increased.

[0013] Furthermore, the outlet cavity has a tapered structure at one end for ejecting the airflow.

[0014] In this solution, the outlet cavity is designed to be tapered at the airflow outlet to accelerate the ejection speed of the main airflow.

[0015] Furthermore, a tube wall type static eliminator is provided on the spacer ring.

[0016] In this solution, when the liquid leaves the atomizing surface of the atomizer nozzle, it will break down into a uniform fine mist of micron-sized particles, but it will also bring a high dose of static electricity to the particles; pipe wall static eliminators are installed on both sides of the spacer ring to neutralize the static electricity of the fine mist of particles. After the static electricity is eliminated, the particles are integrated together and then sprayed out by the main airflow to prevent them from being adsorbed on the wall next to the mixing chamber and causing medium loss.

[0017] Furthermore, the main air flow inlet is communicated with the main air flow annular cavity along the tangential direction of the atomization cavity.

[0018] In this solution, the main airflow is designed to flow into the atomizing chamber in a tangential manner, so it moves in a spiral manner when carrying particles from the atomizing chamber to the mixing chamber, which extends the mixing path of the particles and the main airflow and has a better drying effect on the particulate matter.

[0019] Furthermore, an end-of-tube static eliminator is provided on the airflow main pipe.

[0020] In this solution, the end-of-tube static eliminator can make the primary and secondary airflows electrically neutral when they enter the mixing chamber, preventing particles from being adsorbed by the tube walls of the mixing chamber, and ultimately achieving a particle mass concentration close to the set value.

[0021] Furthermore, a total flow controller is provided on the main airflow pipe; and a secondary flow controller is provided on the secondary airflow pipe.

[0022] In this solution, the flow rates of the primary and secondary airflows can be adjusted by a total flow controller and a secondary flow controller, thereby increasing the mass concentration of the particles.

[0023] The beneficial effects of the utility model are:

[0024] In the static elimination device for increasing the mass concentration of particulate matter provided by the utility model, a tube end type static eliminator is provided on the air flow main pipe, and a tube wall type static eliminator is provided on the spacer ring at the atomizer nozzle. Through the two static elimination processes on the tube end and the tube wall, the particles are integrated together, the potential balance can be maintained, and they will not be adsorbed on the inner wall of the mixing chamber, thereby avoiding medium loss.

[0025] During drying, the airflow is divided into a main airflow and a secondary airflow and flows into a mixing chamber. The standard solution is atomized into a fine mist of particles by the atomizer and then mixed with the electrically neutral main airflow and secondary airflow in the mixing chamber. Under the entrainment and push of the electrically neutral main airflow and secondary airflow, the fine mist of particles is dried to form particles without static electricity, thereby increasing its mass concentration to reach a preset particle mass concentration. In addition, the main airflow flows into the atomization chamber in a tangential manner and spirals forward inside the atomization chamber and the mixing chamber, with a high degree of mixing with the fine mist of particles, thereby achieving a good drying effect on the fine mist of particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of an electrostatic elimination device for increasing the mass concentration of particulate matter in the present invention;

[0027] Figure 2 This is a cross-sectional view of the interior of the mixing chamber of the present invention;

[0028] Figure 3 Schematic diagram of the spiral path of the main airflow and particulate matter in the embodiment.

[0029] Reference numerals:

[0030] 1. Airflow main pipe; 11. Total flow controller; 12. End-of-tube static eliminator; 2. Main airflow pipe; 21. Main airflow annular cavity; 22. Main airflow inlet; 3. Secondary airflow pipe; 31. Secondary airflow annular cavity; 32. Secondary airflow inlet; 33. Secondary flow controller; 4. Mixing chamber; 41. Atomizing chamber; 42. Mixing chamber; 43. Outlet chamber; 44. Spacer ring; 45. Tube wall static eliminator; 5. Atomizer; DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The specific embodiments of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be understood that the present invention is not limited to the specific embodiments. For those skilled in the art, as long as various variations are within the spirit and scope of the present invention as defined and determined by the appended claims, these variations are obvious, and all inventions and creations utilizing the concepts of the present invention are protected.

[0032] like Figure 1 As shown, this embodiment provides an electrostatic eliminator for increasing the mass concentration of particulate matter. The device can highly mix the fine mist of particles atomized from the standard solution with the airflow, while simultaneously eliminating static electricity from the fine mist of particles and the airflow, thereby preventing the particles from being adsorbed on the inner wall of the mixing chamber and causing medium loss. The device specifically includes:

[0033] An airflow main pipe 1, a primary airflow pipe 2, a secondary airflow pipe 3, a mixing chamber 4 and an atomizer 5;

[0034] Among them, one end of the air flow main pipe 1 is an air inlet for introducing the total air flow; the other end of the air flow main pipe 1 is connected in parallel with the main air flow pipe 2 and the secondary air flow pipe 3; the main air flow pipe 2 and the secondary air flow pipe 3 are connected to the mixing chamber 4 at one end away from the air flow main pipe 1; the total air flow in the air flow main pipe 1 is divided into the main air flow and the secondary air flow, which respectively pass through the main air flow pipe 2 and the secondary air flow pipe 3 to enter the mixing chamber 4; an atomizer 5 is provided at the bottom of the mixing chamber 4, and the water inlet of the atomizer 5 is connected to the standard solution, and the nozzle of the atomizer 5 is connected to the inner cavity of the mixing chamber 4; after the standard solution is atomized into fine particulate mist by the atomizer 5, the main air flow and the secondary air flow are mixed with the fine particulate mist in the mixing chamber 4, and the fine particulate mist is dried under the entrainment and push of the electrically neutral main air flow and the secondary air flow, and its mass concentration is increased.

[0035] The mixing chamber 4 includes an atomizing chamber 41, a mixing chamber 42 and an outlet chamber 43. The atomizer 5 is arranged inside the atomizing chamber 41; the atomizing chamber 41 is connected to the mixing chamber 42 through a flange, and the mixing chamber 42 is connected to the outlet chamber 43 through a flange; the standard solution is atomized by the atomizer 5 in the atomizing chamber 41, and then passes through the mixing chamber 42 under the impetus of the primary airflow and the secondary airflow, and is finally sprayed out from the outlet chamber 43.

[0036] like Figure 2 As shown, a secondary air flow annular cavity 31 is provided inside the atomizing cavity 41, and the secondary air flow annular cavity 31 is arranged around the nozzle of the atomizer 5; a secondary air flow inlet 32 ​​connected to the secondary air flow annular cavity 31 is provided on the side wall of the atomizing cavity 41, and the secondary air flow pipe 3 is connected to the secondary air flow inlet 32; a spacer ring 44 is provided around the nozzle of the atomizer 5, and a main air flow annular cavity 21 is formed on the outside of the spacer ring 44; a main air flow inlet 22 connected to the main air flow annular cavity 21 is provided on the side wall of the atomizing cavity 41, and the main air flow pipe 2 is connected to the main air flow inlet 22.

[0037] The outlet cavity 43 has a tapered structure at one end for ejecting the airflow. This design can accelerate the ejection speed of the main airflow.

[0038] A tube wall static eliminator 45 is provided on the spacer ring 44; when the liquid leaves the atomizing surface of the nozzle of the atomizer 5, it will be decomposed into a uniform fine mist of micron-sized particles, but it will also bring a high dose of static electricity to the particles; tube wall static eliminators 45 are installed on both sides of the spacer ring 44 to neutralize the static electricity of the fine mist of particles. After the static electricity is eliminated, the particles are integrated together and then ejected by the main airflow to prevent them from being adsorbed on the tube wall next to the mixing chamber 4 and causing medium loss.

[0039] The main airflow inlet 22 is connected to the main airflow annular cavity 21 along the tangential direction of the atomizing cavity 41. In this design, the main airflow flows into the atomizing cavity 41 in a tangential manner, so when it carries the particles from the atomizing cavity 41 to the mixing cavity 42, it moves in a spiral manner, extending the mixing path of the particles and the main airflow, and having a better drying effect on the fine mist of particles. Figure 3 As shown, Figure 3 The medium blue lines show the path of the main airflow, and the red lines show the path of the particulate matter.

[0040] An end-of-tube static eliminator 12 is provided on the airflow manifold 1. The end-of-tube static eliminator 12 can ensure that the primary and secondary airflows are electrically neutral when entering the mixing chamber 42, thereby preventing particles from being adsorbed by the walls of the mixing chamber 4 and ultimately achieving a particle mass concentration close to the set value.

[0041] A total flow controller 11 is provided on the airflow main pipe 1; a secondary flow controller 33 is provided on the secondary airflow pipe 3; the total flow controller 11 and the secondary flow controller 33 can be used to adjust the flow rates of the main airflow and the secondary airflow, thereby increasing the mass concentration of particulate matter.

[0042] In this embodiment, the atomizer 5 is preferably an ultrasonic atomizer.

[0043] The working principle of this embodiment is:

[0044] When the static elimination device for increasing the mass concentration of particulate matter provided in this embodiment is used, the total air flow is introduced into the air flow main pipe 1. After the static electricity is eliminated by the end-of-tube static eliminator 12, the total air flow is divided into two streams and enters the main air flow pipe 2 and the secondary air flow pipe 3; and enters the mixing chamber 4 through the main air flow pipe 2 and the secondary air flow.

[0045] When the standard solution is sprayed from the nozzle of the atomizer 5, the sprayed particle mist is wrapped by the secondary airflow in the secondary airflow annular cavity 31, and the particle mist is dried by the secondary airflow and sprayed along with the secondary airflow; after being sprayed, it is mixed with the main airflow in the main airflow annular cavity 21, and the particle mist is dried again and sprayed from the outlet cavity 43 under the push of the main airflow; the drying of the particles is achieved and the mass concentration of the particles is improved.

[0046] Those skilled in the art will appreciate that the embodiments herein are intended to help readers understand the principles of the present invention, and should be understood that the scope of protection of the present invention is not limited to such specific descriptions and embodiments. Those skilled in the art can, based on the technical teachings disclosed in this utility model, make various other specific variations and combinations that do not depart from the essence of the present invention, and such variations and combinations are still within the scope of protection of the utility model.

Claims

1. An electrostatic eliminator for increasing the mass concentration of particulate matter, characterized by: The invention comprises an air flow main pipe (1), one end of the air flow main pipe (1) is an air inlet, and the other end of the air flow main pipe (1) is connected in parallel to a main air flow pipe (2) and a secondary air flow pipe (3); the ends of the main air flow pipe (2) and the secondary air flow pipe (3) away from the air flow main pipe (1) are connected to a mixing chamber (4); An atomizer (5) is provided at the bottom of the mixing chamber (4), a water inlet of the atomizer (5) is connected to a standard solution, and a nozzle of the atomizer (5) is communicated with the inner cavity of the mixing chamber (4).

2. The electrostatic eliminator for increasing the mass concentration of particulate matter according to claim 1, characterized in that: The mixing chamber (4) comprises an atomizing chamber (41), a mixing chamber (42) and an outlet chamber (43); the atomizer (5) is arranged inside the atomizing chamber (41); the atomizing chamber (41) is connected to the mixing chamber (42) via a flange, and the mixing chamber (42) is connected to the outlet chamber (43) via a flange.

3. The static eliminator for increasing the mass concentration of particulate matter according to claim 2, characterized in that: A secondary airflow annular cavity (31) is provided inside the atomizing cavity (41), and the secondary airflow annular cavity (31) is arranged around the nozzle of the atomizer (5); a secondary airflow inlet (32) communicating with the secondary airflow annular cavity (31) is provided on the side wall of the atomizing cavity (41), and the secondary airflow pipe (3) is connected to the secondary airflow inlet (32); A spacer ring (44) is provided around the nozzle of the atomizer (5), and a main airflow annular cavity (21) is formed outside the spacer ring (44); a main airflow inlet (22) communicating with the main airflow annular cavity (21) is provided on the side wall of the atomizing cavity (41), and the main airflow pipe (2) is connected to the main airflow inlet (22).

4. The static eliminator for increasing the mass concentration of particulate matter according to claim 2, characterized in that: The outlet cavity (43) is a tapered structure with one end for ejecting airflow being gradually contracted.

5. The static eliminator for increasing the mass concentration of particulate matter according to claim 3, characterized in that: A tube wall type static eliminator (45) is provided on the spacer ring (44).

6. The static eliminator for increasing the mass concentration of particulate matter according to claim 3, characterized in that: The main air flow inlet (22) is connected to the main air flow annular cavity (21) along the tangential direction of the atomization cavity (41).

7. The static eliminator for increasing the mass concentration of particulate matter according to any one of claims 1 to 6, characterized in that: The airflow main pipe (1) is provided with a tube end type static eliminator (12).

8. The static eliminator for increasing the mass concentration of particulate matter according to any one of claims 1 to 6, characterized in that: The main airflow pipe (1) is provided with a total flow controller (11); the secondary airflow pipe (3) is provided with a secondary flow controller (33).

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