Electrostatic precipitator

Abstract

The present invention relates to an electrostatic dust removal device, comprising: a discharge electrode; a dust collecting electrode, which is arranged at an interval relative to the discharge electrode and forms a dust removal electric field with the discharge electrode; and an adjusting mechanism, which controls the distance between the discharge electrode and the dust collecting electrode to change inversely proportionally with the change of the airflow in the dust removal electric field. When the airflow velocity and air volume entering the dust removal electric field are relatively large, the distance between the discharge electrode and the dust collecting electrode is reduced, on the one hand, the electric field strength is increased, so that the charged dust is subjected to a larger electric field strength and the dust removal rate is improved; on the other hand, the moving distance of the charged dust in the dust removal electric field is shortened, so that the charged dust can encounter the dust collecting electrode when the load is still relatively high, so that more particulate matter can encounter the dust collecting electrode before the load it carries is completely attenuated, and more dust can be adsorbed on the dust collecting electrode, thereby improving the dust removal rate. At the same time, the voltage of the electrode does not need to be increased, so as to prevent the motor voltage from being too high and breaking through the dust removal electric field, which in turn affects the dust removal effect and consumes electricity.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic dust removal, in particular to an electrostatic dust removal device. Background Art

[0002] Electrostatic dust removal is a method of gas dust removal. Its principle is: dust-containing gas is electrically separated when passing through a high-voltage electrostatic field. After the dust particles combine with negative ions and carry negative charges, they tend to discharge and deposit on the anode surface. That is, in a strong electric field, air molecules are ionized into positive ions and electrons. When the electrons rush to the positive electrode, they encounter dust particles, causing the dust particles to be negatively charged and adsorbed to the positive electrode and collected.

[0003] In the electrostatic precipitator in the related art, a discharge electrode and a dust collecting electrode are usually provided, and the dust particles are charged and adsorbed on the dust collecting electrode through the electric field formed between the discharge electrode and the dust collecting electrode. However, when the airflow speed entering the electric field is too high, the small particles in the high-speed airflow cannot be effectively adsorbed, and the traditional electrostatic precipitator has a low removal rate for small particles in the high-speed airflow. Summary of the invention

[0004] Based on this, it is necessary to provide an electrostatic dust removal device to improve the dust removal rate of high-speed flowing airflow.

[0005] An electrostatic dust removal device, comprising:

[0006] discharge electrode;

[0007] A dust collecting electrode is arranged opposite to the discharge electrode and spaced apart from the discharge electrode, and a dust removal electric field is formed between the dust collecting electrode and the discharge electrode;

[0008] The regulating mechanism controls the distance between the discharge electrode and the dust collecting electrode to change in inverse proportion with the change of the air flow in the dust removal electric field.

[0009] In the above-mentioned electrostatic dust removal device, when the air velocity and air volume entering the dust removal electric field are relatively large, the distance between the discharge electrode and the dust collecting electrode can be reduced by the adjustment mechanism. On the one hand, the electric field strength is increased, so that the charged dust is subjected to a larger electric field force, thereby improving the dust removal rate; on the other hand, the moving distance of the charged dust in the dust removal electric field is shortened, so that the charged dust can encounter the dust collecting electrode when the load is still relatively high, so that more dust can encounter the dust collecting electrode before the load it carries is completely attenuated, and more dust can be adsorbed on the dust collecting electrode, thereby improving the dust removal rate. In this way, the dust removal rate for high-speed airflow is improved by reducing the distance between the discharge electrode and the dust collecting electrode. At the same time, the voltage of the electrode does not need to be increased, so as to prevent the electrode voltage from being too high and breaking through the dust removal electric field, thereby affecting the dust removal effect and consuming electricity.

[0010] In some of the embodiments, the discharge electrode is movably arranged to be close to and away from the dust collecting electrode, and is located on the inflow path of the airflow entering the dust removal electric field;

[0011] The regulating mechanism provides elastic force for the discharge electrode to move away from the dust collecting electrode.

[0012] In some embodiments, the adjustment mechanism includes a frame and an elastic member, and the elastic member is connected between the frame and the discharge electrode.

[0013] In some of the embodiments, a force-bearing plate is further included, which is connected to the discharge electrode and is located on the inflow path of the airflow entering the dust removal electric field.

[0014] In some embodiments, the force-bearing plates are provided on both sides of the discharge electrode that intersect with its moving direction; and / or

[0015] The regulating mechanism is arranged on both sides of the discharge electrode which intersect with the moving direction of the discharge electrode.

[0016] Some of the embodiments further include a guide rail fixed on the frame, wherein the guide rail extends in a direction from the discharge electrode to the dust collecting electrode, and the discharge electrode is movably disposed on the guide rail.

[0017] In some of the embodiments, a pulley is further included, and the pulley is coupled to a side of the discharge electrode facing the guide rail.

[0018] In some of the embodiments, an air inlet connected to the dust removal electric field is formed on the discharge electrode.

[0019] In some embodiments, the discharge electrode includes an outer frame and a plurality of discharge rods disposed on the outer frame, and the plurality of discharge rods are arranged at intervals along a direction intersecting with a moving direction of the discharge electrode.

[0020] In some of the embodiments, the dust collecting electrode is constructed as a power-carrying plate, and the power-carrying plate is distributed along a direction intersecting with the discharge electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of an electrostatic precipitator from one perspective in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic structural diagram of the electrostatic precipitator from another perspective is shown. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] like Figure 1 As shown, in one embodiment of the present invention, an electrostatic dust removal device 100 is provided, comprising a discharge electrode 10 and a dust collecting electrode 30. The discharge electrode 10 and the dust collecting electrode 30 are arranged relatively spaced apart, and a dust removal electric field is formed between the discharge electrode 10 and the dust collecting electrode 30. The charged particles in the airflow entering the dust removal electric field are gathered and adsorbed on the dust collecting electrode 30 under the action of the electric field force, so that dust removal is performed.

[0027] The electrostatic dust removal device 100 also includes an adjusting mechanism 50, which controls the distance between the discharge electrode 10 and the dust collecting electrode 30 to change inversely proportional to the change of the air flow in the dust removal electric field. That is, the adjusting mechanism 50 can make the distance between the discharge electrode 10 and the dust collecting electrode 30 change inversely proportional to the change of the air flow rate in the dust removal electric field. When the air flow velocity and air volume entering the dust removal electric field are large, the distance between the discharge electrode 10 and the dust collecting electrode 30 is reduced by the adjusting mechanism 50. On the one hand, the electric field strength is increased, so that the charged dust is subjected to a larger electric field strength and the dust removal rate is improved; on the other hand, the moving distance of the charged dust in the dust removal electric field is shortened, so that the charged dust can encounter the dust collecting electrode 30 when the load is still high, so that more particulate matter can encounter the dust collecting electrode 30 before the load carried by itself is completely attenuated, and more dust can be adsorbed on the dust collecting electrode 30, thereby improving the dust removal rate. In this way, the dust removal rate of high-speed airflow is improved, and at the same time, the voltage of the electrode does not need to be increased, to prevent the motor voltage from being too high and breaking through the dust removal electric field, which in turn affects the dust removal effect and consumes electricity.

[0028] Furthermore, the discharge electrode 10 is movably arranged to be close to and away from the dust collecting electrode 30, and is located on the inflow path of the airflow entering the dust removal electric field, so that the discharge electrode 10 can be subjected to the thrust of the airflow; the regulating mechanism 50 provides the discharge electrode 10 with an elastic force away from the dust collecting electrode 30. When the airflow volume decreases, the wind force received by the discharge electrode 10 is small and cannot overcome the elastic force applied by the regulating mechanism 50, and the discharge electrode 10 will move away from the dust collecting electrode 30. At this time, the dust removal electric field with a larger spacing can meet the dust removal needs of a small air volume, and will not produce a large amount of ozone. When the airflow volume increases, the discharge electrode 10 is subjected to a larger airflow thrust, and can overcome the elastic force applied by the regulating mechanism 50 and move close to the dust collecting electrode 30, so as to effectively absorb the dust in the high-speed flowing airflow. At the same time, the high-speed flowing airflow can destroy the formation of ozone and reduce the amount of ozone produced. In this way, under windshields with different air volumes, dust can be effectively removed and the amount of ozone produced can be reduced.

[0029] Specifically in the embodiment, an air inlet 11 connected to the dust removal electric field is formed on the discharge electrode 10. The airflow flowing into the electrostatic dust removal device 100 passes through the air inlet 11 on the discharge electrode 10 and then enters the dust removal electric field. When the airflow passes through the air inlet 11, the dust in the airflow is charged. In addition, the discharge electrode 10 is directly located on the path of the incoming airflow, and the discharge electrode 10 can be pushed to move relative to the dust collecting electrode 30 by the thrust of the airflow.

[0030] Furthermore, the discharge electrode 10 includes an outer frame 12 and a plurality of discharge rods 14 disposed on the outer frame 12. The plurality of discharge rods 14 are arranged at intervals along a direction intersecting the moving direction of the discharge electrode 10 to form an air inlet 11 between adjacent discharge rods 14, ionizing the airflow entering the dust removal electric field through the air inlet 11, so that the dust in the airflow is charged. At the same time, a dust removal electric field is formed between the plurality of discharge rods 14 and the dust collecting electrode 30, and an electric field force is applied to the charged dust, so that the charged dust moves to the dust collecting electrode 30 under the action of the electric field force and is adsorbed.

[0031] Furthermore, the dust collecting electrode 30 is constructed as a powered plate, and is spaced apart from the discharge electrode 10 to form a dust removal electric field. After the airflow enters the dust removal electric field from the discharge electrode 10, it flows out through the dust collecting electrode 30, and the airflow is guided to flow out through the dust collecting electrode 30. In addition, the powered plate is distributed along the flow direction of the airflow parallel to the discharge electrode 10. After the airflow flows into the dust removal electric field from the discharge electrode 10, it flows out along the dust collecting electrode 30 in the original flow direction. The airflow flow process is smooth and does not generate large wind resistance. Optionally, the dust collecting electrode 30 is constructed as a powered plate perpendicular to the discharge rod 14. After the airflow flows into the dust removal electric field from the discharge electrode 10, it flows out of the dust removal electric field along the dust collecting electrode 30. The extension direction of the dust collecting electrode 30 is parallel to the flow direction of the airflow. The dust collecting electrode 30 has a small resistance to the airflow, and an airflow path flowing through the dust removal electric field can be formed.

[0032] Specifically in the embodiment, the adjustment mechanism 50 includes a frame 52 and an elastic member 54 . The elastic member 54 is connected between the frame 52 and the discharge electrode 10 to provide an elastic force for the discharge electrode 10 to be away from the dust collecting electrode 30 . When the air intake of the electrostatic precipitator 100 is at a low level, the thrust generated by the airflow on the discharge electrode 10 is small, and it cannot overcome the elastic force of the elastic member 54 acting on the electrode, and the discharge electrode 10 will not move; when the air intake of the electrostatic precipitator 100 is at a higher level, the thrust generated by the airflow on the discharge electrode 10 is larger, and the discharge electrode 10 can be pushed to move a shorter distance toward the dust collecting electrode 30; when the air intake of the electrostatic precipitator 10 is at the highest level, the thrust generated by the airflow on the discharge electrode 10 is the largest, and the discharge electrode 10 can be pushed to move the longest distance toward the dust collecting electrode 30. At this time, the distance between the discharge electrode 10 and the dust collecting electrode 30 is the smallest, the dust removal electric field strength is the largest, and the movement path of the dust in the airflow is the shortest, the dust load loss is the lowest, and the dust load reaching the dust collecting electrode 30 is large, so more dust can be adsorbed on the dust collecting electrode 30.

[0033] It can be understood that in some other embodiments, the elastic member 54 can also be connected between the discharge electrode 10 and the dust collecting electrode 30. When the airflow is large, the airflow pushes the discharge electrode 10 to move closer to the dust collecting electrode 30 and squeezes the elastic member 54, so that the elastic member 54 stores the reset force that drives the discharge electrode 10 to move away from the dust collecting electrode 30; when the airflow is small, the airflow thrust on the discharge electrode 10 is small, and the elastic member 54 will push the discharge electrode 10 to move away from the dust collecting electrode 30.

[0034] In some embodiments, the electrostatic precipitator 100 further includes a force plate 60, which is connected to the discharge electrode 10 and is located on the inflow path of the airflow entering the dust removal electric field. In this way, the force plate 60 is located on the inflow path of the airflow, forming a larger force-bearing surface, increasing the force-bearing area that bears the thrust of the airflow, and when the wind volume increases, the discharge electrode 10 can quickly move closer to the dust collecting electrode 30, and when the wind volume decreases, the discharge electrode 10 can quickly move away from the dust collecting electrode 30, so that the discharge electrode 10 can make a timely movement response according to the change in wind volume, further improving the dust removal efficiency of the electrostatic precipitator 100.

[0035] Specifically, the discharge electrode 10 is provided with force-bearing plates 60 on both sides intersecting with its own moving direction, which can evenly bear the thrust of the airflow from the two opposite sides of the discharge electrode 10, so that the discharge electrode 10 is evenly stressed and moves smoothly. It can be understood that the discharge electrode 10 is provided with adjustment mechanisms 50 on both sides intersecting with its own moving direction, so as to evenly apply elastic force from the two opposite sides of the discharge electrode 10, so that the discharge electrode 10 is evenly stressed and moves smoothly.

[0036] Furthermore, the electrostatic precipitator 100 also includes a guide rail 70 fixed on the frame 52, and the guide rail 70 extends in the direction from the discharge electrode 10 to the dust collecting electrode 30. The discharge electrode 10 is movably arranged on the guide rail 70, and the discharge electrode 10 is guided by the guide rail 70 to move toward and away from the dust collecting electrode 30, thereby improving the reliability of the movement of the discharge electrode 10.

[0037] Furthermore, the electrostatic precipitator 100 further includes a pulley 80, which is coupled to a side of the discharge electrode 10 facing the guide rail 70, so that the discharge electrode 10 can slide flexibly along the guide rail, thereby reducing the friction force when the discharge electrode 10 slides. Specifically, the pulley 80 is coupled to the outer frame 12 in the discharge electrode 10.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An electrostatic precipitator, characterized in that: include: Discharge electrode (10); A dust collecting electrode (30) is arranged relative to the discharge electrode (10) and spaced apart from the discharge electrode (10), and forms a dust removal electric field between the discharge electrode (10); An adjusting mechanism (50) controls the distance between the discharge electrode (10) and the dust collecting electrode (30) to change in inverse proportion to the change in the airflow rate in the dust removal electric field; the discharge electrode (10) is movably arranged to approach and move away from the dust collecting electrode (30) and is located on the inflow path of the airflow entering the dust removal electric field; The adjusting mechanism (50) provides an elastic force for the discharge electrode (10) to move away from the dust collecting electrode (30). The adjusting mechanism (50) comprises a frame (52) and an elastic member (54), wherein the elastic member (54) is connected between the frame (52) and the discharge electrode (10); The electrostatic dust removal device also includes a force-bearing plate (60), which is connected to the discharge electrode (10) and is located on the inflow path of the airflow entering the dust removal electric field. The force-bearing plate forms a force-bearing surface for bearing the thrust of the airflow.

2. The electrostatic precipitator according to claim 1, characterized in that: The discharge electrode (10) is provided with the force-bearing plates (60) on both sides thereof intersecting with the direction of movement of the discharge electrode (10); and / or The adjustment mechanism (50) is provided on both sides of the discharge electrode (10) intersecting with the direction in which the discharge electrode (10) moves.

3. The electrostatic precipitator according to claim 1, characterized in that: It also comprises a guide rail (70) fixed on the frame (52), the guide rail (70) extending in a direction from the discharge electrode (10) to the dust collecting electrode (30), and the discharge electrode (10) is movably arranged on the guide rail (70).

4. The electrostatic precipitator according to claim 3, characterized in that: It also includes a pulley (80), the pulley (80) being coupled to a side of the discharge electrode (10) facing the guide rail (70).

5. The electrostatic precipitator according to any one of claims 1 to 4, characterized in that: An air inlet (11) which is in communication with the dust removal electric field is formed on the discharge electrode (10).

6. The electrostatic precipitator according to claim 5, characterized in that: The discharge electrode (10) comprises an outer frame (12) and a plurality of discharge rods (14) arranged on the outer frame (12); the plurality of discharge rods (14) are arranged at intervals along a direction intersecting with a moving direction of the discharge electrode (10).

7. The electrostatic precipitator according to any one of claims 1 to 4, characterized in that: The dust collecting electrode (30) is constructed as an electric plate, and the electric plate is distributed along the flow direction of the airflow parallel to the discharge electrode (10).

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