Oil smoke waste gas purification equipment

Abstract

According to the lampblack waste gas purification equipment, N gradient electric fields are sequentially arranged in a row, and the electric field intensity of the gradient electric fields is gradually increased; one port of the air duct is an air inlet, and the other port of the air duct is an air outlet; the N gradient electric fields are sequentially arranged in the direction from the air inlet to the air outlet. In conclusion, the oil fume and waste gas purification equipment prevents the oil fume particles from being collected in the electric field close to the air inlet, and the collected oil fume particles are uniformly distributed among all the electric fields as much as possible, so that the cleaning time interval of the oil fume and waste gas purification equipment is greatly prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of oil fume waste gas purification, in particular to oil fume waste gas purification equipment. Background Art

[0002] In real life, oil fume exhaust gas purification equipment is generally used to remove oil fume particles in the exhaust gas. In practice, oil fume exhaust gas purification equipment is generally equipped with a high-voltage electric field, which uses electrostatic adsorption to effectively remove oil fume particles in the exhaust gas. Electric fields are widely used in the field of oil fume treatment technology. They can be applied to the purification and treatment of kitchen oil fume in commercial complexes, social catering, schools, institutions, factory canteens and other places; food frying, cooking and processing industries; metal processing, textile printing and dyeing, chemical fiber, rubber products, PVC industry and other industrial occasions.

[0003] In actual use, oil fume particles tend to concentrate at the front end of the collection plate, causing the dust capacity at the front end to become saturated quickly, oil pollution to accumulate, and adsorption capacity to decrease. At this time, the high-voltage electric field needs to be disassembled and cleaned, which shortens the maintenance cycle.

[0004] Therefore, how to increase the time interval for cleaning of oil fume exhaust purification equipment and extend the maintenance cycle is an urgent problem to be solved. Summary of the invention

[0005] In view of this, the main purpose of the present invention is to provide a fume exhaust gas purification device.

[0006] To achieve the above object, the technical solution of the present invention is implemented as follows: a fume exhaust gas purification device, comprising: N gradient electric fields 1 、field 2 、...、field + , gradient electric field 1 , gradient electric field 2 ,..., gradient electric field N Arranged in a row, with a gradient electric field 1 The electric field strength is ≤...≤ gradient electric field i The electric field strength < gradient electric field M+1 The electric field strength is ≤...≤ gradient electric field N The electric field strength is, wherein N and M are both natural numbers, N≥2, 1≤M≤N-1; an air duct, one end of the air duct is an air inlet, and the other end is an air outlet; the gradient electric field field 1 , gradient electric field 2 ,..., gradient electric field N are located in the wind duct, and the gradient electric field field1 , gradient electric field 2 ,..., gradient electric field N The air inlets are arranged in sequence toward the air outlets.

[0007] As an improvement of the embodiment of the present invention, the gradient electric field field i One or more combinations of line-to-line discharge, line-to-plate discharge, tooth-to-tooth discharge, and tooth-to-plate discharge are adopted, wherein i is a natural number, 1≤i≤N.

[0008] As an improvement of the embodiment of the present invention, the gradient electric field field i It comprises a metal round tube and a discharge tip located in the metal round tube, wherein i is a natural number, 1≤i≤N.

[0009] As an improvement of the embodiment of the present invention, in N gradient electric fields, 1 、field 2 , ..., field N In the equation, the distance between the anode and cathode is the first constant value, 0 < gradient electric field 1 The voltage difference between the anode and cathode in the field is less than the gradient electric field. 2 The voltage difference between the anode and cathode in the gradient electric field is ≤...≤ N The voltage difference between the anode and cathode in.

[0010] As an improvement of the embodiment of the present invention, in N gradient electric fields, 1 、field 2 , ..., field N In the equation, the voltage difference between the anode and cathode is a second constant value, and the gradient electric field is 1 The distance between the anode and cathode in the gradient electric field 2 The distance between the anode and cathode in the ≥...≥ gradient electric field N The distance between the anode and cathode in is >0.

[0011] As an improvement of the embodiment of the present invention, 0 < gradient electric field field 1 The voltage difference between the anode and cathode in the field is less than the gradient electric field. 2 The voltage difference between the anode and cathode in the gradient electric field is ≤...≤ N The voltage difference between the anode and cathode in the field; the gradient electric field 1 The distance between the anode and cathode in the gradient electric field 2The distance between the anode and cathode in the ≥...≥ gradient electric field N The distance between the anode and cathode in is >0.

[0012] As an improvement of the embodiment of the present invention, the gradient electric field field 1 The voltage difference between the anode and cathode in the field 1 The distance between the anode and cathode in the gradient electric field is ≤...≤ M The voltage difference between the anode and cathode in the field M The distance between the anode and cathode in the gradient electric field M+1 The voltage difference between the anode and cathode in the field M+1 The distance between the anode and cathode in the gradient electric field is ≤...≤ N The voltage difference between the anode and cathode in the field N The distance between the anode and cathode.

[0013] As an improvement of the embodiment of the present invention, the gradient electric field field 1 The electric field strength <...< gradient electric field Num The electric field strength, gradient electric field Num The electric field strength = gradient electric field Num+1 The electric field strength = ... = gradient electric field N The electric field strength, where Num is a natural number, 1 <Num<N。

[0014] As an improvement to the embodiment of the present invention, N=3.

[0015] As an improvement of the embodiment of the present invention, the gradient electric field field 1 The electric field strength < gradient electric field 2 The electric field strength, gradient electric field 2 The electric field strength = gradient electric field 3 The electric field strength.

[0016] As an improvement of the embodiment of the present invention, it also includes: N power supplies, each power supply is powered by a unique gradient electric field.

[0017] As an improvement of the embodiment of the present invention, it further includes: multiple power supplies, each power supply supplies power for at least one gradient electric field.

[0018] As an improvement to the embodiment of the present invention, a part of the gradient electric field is connected to a constant current power supply, and another part of the gradient electric field is connected to a constant voltage power supply.

[0019] As an improvement of the embodiment of the present invention, the gradient electric field field 1 ,..., gradient electric field K The connected power supply is a constant current power supply, and the gradient electric field K+1 ,..., gradient electric field N The connected power supply is a constant voltage power supply, wherein K is a natural number, 1≤K≤N-1.

[0020] The oil fume exhaust gas purification equipment provided by the embodiment of the present invention has the following advantages: The embodiment of the present invention discloses an oil fume exhaust gas purification equipment, comprising: N gradient electric fields arranged in a row, and the electric field strength of the gradient electric field gradually increases; an air duct, one end of the air duct is an air inlet, and the other end is an air outlet; N gradient electric fields are arranged in a direction from the air inlet to the air outlet. In summary, the oil fume exhaust gas purification equipment avoids the oil fume particles from being concentrated in the electric field near the air inlet, and makes the collected oil fume particles as evenly distributed as possible among all electric fields, thereby greatly extending the time interval for cleaning the oil fume exhaust gas purification equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of a fume exhaust gas purification device provided in an embodiment;

[0022] Figure 2 A stereogram including a gradient electric field is provided for an embodiment. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings. However, the embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on the embodiments are all within the protection scope of the present invention.

[0024] The following description and accompanying drawings fully illustrate the specific embodiments of this article so that those skilled in the art can practice them. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of this article includes the entire scope of the claims, as well as all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another, without requiring or implying any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the structure, device or equipment including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such structure, device or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the structure, device or equipment including the elements. Each embodiment is described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0025] The terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. in this document indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this document and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of this document, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, it can also be the internal communication of two elements, it can be a direct connection, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] The embodiment of the present invention provides a fume exhaust gas purification device, such as Figure 1 and Figure 2 As shown, including:

[0027] N gradient electric fields 1 、field 2 , ..., field N , gradient electric field 1 , gradient electric field 2 ,..., gradient electric field NArranged in a row, with a gradient electric field 1 The electric field strength is ≤...≤ gradient electric field M The electric field strength < gradient electric field M+1 The electric field strength is ≤...≤ gradient electric field N The electric field strength is, wherein N and M are both natural numbers, N≥2, 1≤M≤N-1; an air duct, one end of the air duct is an air inlet 1, and the other end is an air outlet 2; the gradient electric field field 1 , gradient electric field 2 ,..., gradient electric field N are located in the wind duct, and the gradient electric field field 1 , gradient electric field 2 ,..., gradient electric field N The air inlet 1 is arranged in sequence toward the air outlet 2.

[0028] Here, each gradient electric field is provided with an anode and a cathode, wherein the voltage between the anode and the cathode can be set according to actual conditions, so that an electric field can be generated between the anode and the cathode. In practice, a DC power supply can be provided in the oil fume exhaust gas purification device, and the DC power supply provides voltage to the anode and the cathode.

[0029] In the oil fume exhaust gas treatment equipment, a high voltage is generated by a high voltage generator (for example, a DC power supply, etc.) to form a strong electric field between two electrodes. The design of the electrodes is diverse. When the oil fume exhaust gas enters the electric field area, the oil fume particles will be polarized under the action of the electric field. For linear electrodes, an uneven electric field will be formed around them, and the oil fume particles will move toward the electrode. For plate electrodes, the oil fume particles will move toward the surface of the plate under the action of the electric field force. In the electric field, the oil fume particles collide with gas molecules and acquire electric charges, becoming charged particles. Under the action of the electric field force, these charged oil fume particles will move toward the surface of the electrode with the opposite charge.

[0030] Case 1: When the gradient electric field 1 Adsorption capacity = gradient electric field 2 Adsorption capacity = ... = gradient electric field 1 When the adsorption capacity of the oil fume exhaust gas is high, it will first pass through the gradient electric field. 1 , at this time, the gradient electric field 1 It will absorb a lot of oil fume exhaust gas from the gradient electric field 1 The concentration of oil fume particles in the exhaust gas will be reduced. After that, the exhaust gas will pass through the gradient electric field. 2,..., gradient electric field N . That is, the gradient electric field 1 Adsorbed oil smoke particles ≥ gradient electric field 2 Adsorbed oil smoke particles ≥...≥ gradient electric field N The oil smoke particles adsorbed, so after a long period of use, the gradient electric field 1 The oil fume particles on the gradient electric field are saturated first (at this time, the oil fume exhaust gas purification equipment needs to be cleaned), but the oil fume particles on the other gradient electric fields are far from saturated, especially the gradient electric field field N In summary, in the scenario shown in Scenario 1, the time interval for cleaning the oil fume exhaust gas purification equipment is relatively short.

[0031] Case 2: In the oil fume exhaust gas purification device of the embodiment of the present invention, due to the gradient electric field 1 The electric field strength is ≤...≤ gradient electric field M The electric field strength < gradient electric field M+1 The electric field strength is ≤...≤ gradient electric field N The electric field strength, i.e. the gradient electric field 1 Adsorption capacity ≤...≤ gradient electric field M Adsorption capacity < gradient electric field M+1 Adsorption capacity ≤...≤ gradient electric field N Therefore, when in use, the exhaust gas will be subjected to a gradient electric field in turn. 1 , gradient electric field 2 ,..., gradient electric field N , it can be understood that the gradient electric field 1 ,..., gradient electric field M The adsorption capacity is weak, therefore, from the gradient electric field M The concentration of oil smoke particles coming out will be higher due to the gradient electric field. M+1 The adsorption capacity is stronger, so the gradient electric field M+1 Adsorbed oil smoke particles and gradient electric field 1 ,..., gradient electric field M The difference between the adsorbed oil smoke particles will be smaller, that is, compared with case 1, the gradient electric field in case 2 1 Adsorbed oil smoke particles, gradient electric field 2 Adsorbed oil smoke particles, ..., gradient electric fieldN The difference between the adsorbed oil smoke particles will be smaller, that is, the gradient electric field 1 , gradient electric field 2 ,..., gradient electric field N Cleaning is required at about the same time. In summary, in the scenario shown in Scenario 2, the time interval for cleaning the oil fume exhaust gas purification equipment is relatively long.

[0032] To sum up, the oil fume exhaust gas purification equipment in the embodiment of the present invention avoids the oil fume particles from being concentrated in the electric field near the air inlet 1, and makes the collected oil fume particles distributed as evenly as possible among all electric fields, thereby greatly extending the time interval for cleaning the oil fume exhaust gas purification equipment.

[0033] Optional, N ≥ 3.

[0034] In this embodiment, the gradient electric field i One or more combinations of line-to-line discharge, line-to-plate discharge, tooth-to-tooth discharge, and tooth-to-plate discharge are adopted, wherein i is a natural number, 1≤i≤N.

[0035] In this embodiment, the gradient electric field i The invention comprises a metal round tube and a discharge tip located in the metal round tube, wherein i is a natural number, 1≤i≤N. Here, tip discharge occurs between the metal round tube and the discharge tip, thereby forming an electric field.

[0036] In this embodiment, in N gradient electric fields, 1 、field 2 、...、field N In the equation, the distance between the anode and cathode is the first constant value, 0 < gradient electric field 1 The voltage difference between the anode and cathode in the field is less than the gradient electric field. 2 The voltage difference between the anode and cathode in the gradient electric field is ≤...≤ N The voltage difference between the anode and cathode in the cell. When the distance between the anode and cathode is constant, the greater the voltage difference between the anode and cathode, the greater the electric field strength formed.

[0037] In this embodiment, in N gradient electric fields, 1 、field 2 、...、field N In the equation, the voltage difference between the anode and cathode is a second constant value, and the gradient electric field is 1 The distance between the anode and cathode in the gradient electric field 2The distance between the anode and cathode in the ≥...≥ gradient electric field N The distance between the anode and cathode in the anode is > 0. When the voltage difference between the anode and cathode is constant, the smaller the distance between the anode and cathode, the greater the electric field strength formed.

[0038] In this embodiment, 0 < gradient electric field field 1 The voltage difference between the anode and cathode in the field is less than the gradient electric field. 2 The voltage difference between the anode and cathode in the gradient electric field is ≤...≤ N The voltage difference between the anode and cathode in the field; the gradient electric field 1 The distance between the anode and cathode in the gradient electric field 2 The distance between the anode and cathode in the ≥...≥ gradient electric field N The distance between the anode and cathode in is >0.

[0039] In this embodiment, the gradient electric field 1 The voltage difference between the anode and cathode in the field 1 The distance between the anode and cathode in the gradient electric field is ≤...≤ M The voltage difference between the anode and cathode in the field M The distance between the anode and cathode in the gradient electric field M+1 The voltage difference between the anode and cathode in the field 1+1 The distance between the anode and cathode in the gradient electric field is ≤...≤ N The voltage difference between the anode and cathode in the field N The distance between the anode and cathode.

[0040] In this embodiment, the gradient electric field 1 The electric field strength <...< gradient electric field Num The electric field strength, gradient electric field Num The electric field strength = gradient electric field Num+1 The electric field strength = ... = gradient electric field N The electric field strength, where Num is a natural number, 1 <Num<N。

[0041] In this embodiment, N=3.

[0042] In this embodiment, the gradient electric field 1 The electric field strength < gradient electric field 2The electric field strength, gradient electric field 2 The electric field strength = gradient electric field 3 The electric field strength. Optionally, the gradient electric field 1 The electric field strength is 500V / mm, and the gradient electric field 1 Connect constant current power supply, gradient electric field 2 The electric field strength = gradient electric field 3 The electric field strength = 100V / mm, gradient electric field 2 and gradient electric field 3 Both are connected to a constant voltage power supply.

[0043] In this embodiment, it also includes: N power supplies, each power supply is powered by a unique gradient electric field.

[0044] In this embodiment, it further comprises: a plurality of power supplies, each power supply supplies power for at least one gradient electric field. Here, some power supplies supply power for multiple gradient electric fields, and some power supplies supply power for one gradient electric field, but one gradient electric field is only supplied by one power supply.

[0045] In this embodiment, a part of the gradient electric field is connected to a constant current power supply, and another part of the gradient electric field is connected to a constant voltage power supply.

[0046] In this embodiment, the gradient electric field 1 ,..., gradient electric field K The connected power supply is a constant current power supply, and the gradient electric field K+1 ,..., gradient electric field N The connected power supply is a constant voltage power supply, where K is a natural number, 1≤K≤N-1. Figure 2 As shown, the gradient electric field 1 The distance between the anode and cathode in the gradient electric field 2 The distance between the anode and cathode in the field = gradient electric field 3 The distance between the anode and cathode in is >0.

[0047] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0048] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fume exhaust gas purification device, characterized in that: include: N gradient electric fields field1, field2, ..., field N , gradient electric field field1, gradient electric field field2, ..., gradient electric field field N Arranged in a row, and the electric field strength of the gradient electric field field1 ≤...≤ gradient electric field field M The electric field strength < gradient electric field M+1 The electric field strength is ≤...≤ gradient electric field N The electric field strength is, where N and M are both natural numbers, N ≥ 2, 1 ≤ M ≤ N-1; an air duct, wherein one end of the air duct is an air inlet (1), and the other end is an air outlet (2); the gradient electric field field1, the gradient electric field field2, ..., the gradient electric field field N are all located in the air duct, and the gradient electric field field1, gradient electric field field2, ..., gradient electric field field N The air inlets (1) are arranged in sequence in a direction toward the air outlets (2).

2. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: The gradient electric field i One or more combinations of line-to-line discharge, line-to-plate discharge, tooth-to-tooth discharge, and tooth-to-plate discharge are adopted, wherein i is a natural number, 1≤i≤N.

3. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: The gradient electric field i It comprises a metal round tube and a discharge tip located in the metal round tube, wherein i is a natural number, 1≤i≤N.

4. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: In N gradient electric fields field1, field2, ..., field n In the example, the distance between the anode and the cathode is a first constant value, 0 < the voltage difference between the anode and the cathode in the gradient electric field field1 ≤ the voltage difference between the anode and the cathode in the gradient electric field field2 ≤ ... ≤ the gradient electric field field N The voltage difference between the anode and cathode in.

5. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: In N gradient electric fields field1, field2, ..., field N In the example, the voltage difference between the anode and the cathode is a second constant value, and the distance between the anode and the cathode in the gradient electric field field1 is ≥ the distance between the anode and the cathode in the gradient electric field field2 is ≥...≥ the gradient electric field field N The distance between the anode and cathode in is >0.

6. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: 0<The voltage difference between the anode and cathode in the gradient electric field field1≤The voltage difference between the anode and cathode in the gradient electric field field2≤...≤The voltage difference between the anode and cathode in the gradient electric field field1≤ N The voltage difference between the anode and cathode in The distance between the anode and cathode in the gradient electric field field1 ≥ the distance between the anode and cathode in the gradient electric field field2 ≥...≥ the gradient electric field field N The distance between the anode and cathode in is >0.

7. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: The voltage difference between the anode and cathode in the gradient electric field field1 / the distance between the anode and cathode in the gradient electric field field1 ≤...≤ gradient electric field field M The voltage difference between the anode and cathode in the field M The distance between the anode and cathode in the gradient electric field M+1 The voltage difference between the anode and cathode in the field M+1 The distance between the anode and cathode in the gradient electric field is ≤...≤ N The voltage difference between the anode and cathode in the field N The distance between the anode and cathode.

8. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: The electric field strength of the gradient electric field field1 <...< gradient electric field field Num The electric field strength, gradient electric field Num The electric field strength = gradient electric field Num+1 The electric field strength = ... = gradient electric field N The electric field strength, where Num is a natural number, 1 <Num<N。 9. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: N＝3。 10. The oil fume exhaust gas purification equipment according to claim 9, characterized in that: The electric field strength of the gradient electric field field1 is less than the electric field strength of the gradient electric field field2, and the electric field strength of the gradient electric field field2 is equal to the electric field strength of the gradient electric field field3.

11. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: Also includes: N power supplies, each power supply is powered by a unique gradient electric field.

12. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: Also includes: A plurality of power supplies, each power supply supplies power to at least one gradient electric field.

13. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: One part of the gradient electric field is connected to a constant current power supply, and the other part of the gradient electric field is connected to a constant voltage power supply.

14. The oil fume exhaust gas purification equipment according to claim 1, characterized in that: Gradient electric field field1, ..., gradient electric field field K The connected power supply is a constant current power supply, and the gradient electric field K+1 ,..., gradient electric field N The connected power supply is a constant voltage power supply, wherein K is a natural number, 1≤K≤N-1.

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