A fume purifier

Abstract

The present invention relates to an oil fume purifier, comprising an oil fume purification box, an oil fume inlet pipe, a spray assembly, an electrostatic precipitator, a flexible filter layer and an extrusion assembly of a compressible flexible filter layer, the oil fume purification box is provided with an oil fume inlet and a sewage outlet, the electrostatic precipitator is arranged in the middle of the oil fume purification box, the flexible filter layer is arranged above the electrostatic precipitator, and the spray assembly is arranged below the electrostatic precipitator. The oil fume purifier of the present invention has the characteristics of multiple oil fume purification treatments. The oil fume to be purified enters the water at the bottom of the oil fume purification box, and a part of the impurities in the oil fume will remain in the water, completing the first purification treatment; the high-temperature flue gas coming out of the water rises, enters the electrostatic precipitator after being sprayed, and undergoes a second purification treatment; the flue gas treated by the electrostatic precipitator passes through the flexible filter layer, and the impurities remaining in the flue gas are adsorbed, completing the third purification treatment, and the flue gas after adsorption can be discharged into the atmosphere as clean flue gas.

Description

Technical Field

[0001] The invention relates to the technical field of air purification equipment, and in particular to an oil fume purifier. Background Art

[0002] Human beings cannot live without air, and changes in the physical properties and chemical composition of air directly affect human health. The toxic and harmful exhaust gases emitted by oil smoke are not only irritating to the human body, but many of them are also toxic to the internal organs, and some are mutagens and carcinogens.

[0003] The main sources of oil smoke include oil smoke generated during cooking and oil smoke generated during industrial production. The oil smoke generated during cooking contains a large amount of oil smoke particles and oil stains. If it is not treated, it will not only pollute the equipment and facilities in the kitchen, but also cause great harm to people. In traditional technology, the oil smoke is generally collected by the range hood installed above the stove and discharged directly into the atmosphere through the oil smoke duct of the house, which will cause pollution to the atmosphere no less than automobile exhaust. At the same time, after long-term emission, a large amount of flammable oil stains will accumulate in the oil smoke duct, forming a serious fire hazard. Some equipment in the factory will also generate oil smoke when processing workpieces. On the one hand, the oil smoke will pollute the workshop environment. On the other hand, the oil smoke will cause diseases and endanger the health of workers when inhaled by workers.

[0004] The current oil fume purifiers generally adopt the electrostatic treatment method. Under the action of the external high voltage, the surface or vicinity of the metal wire of the negative electrode releases electrons and quickly moves to the positive electrode, collides with the gas molecules and ionizes. When the oil fume exhaust gas passes through this high voltage electric field, the oil fume particles are charged in a very short time due to collision and capture of gas ions, and move toward the positive electrode dust collecting plate under the action of the electric field force, thereby achieving the separation effect. However, the current oil fume purifiers generally have the problems of complex structure, easy leakage, poor safety, and poor purification effect. Therefore, it is necessary to improve the existing oil fume purifiers. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies of the above technical problems and to provide an oil fume purifier which has good oil fume purification effect and is easy to clean and maintain.

[0006] In order to solve the deficiencies of the above-mentioned technical problems, the technical solution adopted by the present invention is: an oil fume purifier, comprising an oil fume purification box, an oil fume inlet pipe, a spray assembly, an electrostatic precipitator, a flexible filter layer and an extrusion assembly of a compressible flexible filter layer, the oil fume purification box is provided with an oil fume inlet and a sewage outlet, the electrostatic precipitator is arranged in the middle of the oil fume purification box, the flexible filter layer is arranged above the electrostatic precipitator, and the spray assembly is arranged below the electrostatic precipitator.

[0007] As a further optimization of the oil fume purifier of the present invention: the purification equipment also includes a spray assembly, the spray assembly includes a spray pipe, a plurality of spray heads arranged on the spray pipe and a circulating pump, the spray pipe is horizontally arranged below the electrostatic precipitator, the plurality of spray heads are evenly distributed along the length direction of the spray pipe, the water suction port of the circulating pump is connected to the bottom of the oil fume purification box through a pipe, and the water outlet of the circulating pump is connected to the spray pipe through a pipe.

[0008] As a further optimization of the oil fume purifier of the present invention: a demisting plate is arranged between the spray assembly and the electrostatic precipitator.

[0009] As a further optimization of the oil fume purifier of the present invention: the extrusion assembly includes multiple groups of extrusion plates arranged side by side, each group of extrusion plates includes two extrusion plates respectively arranged above and below the flexible filter layer through a rotating shaft, and the extrusion plates can rotate around the rotating shaft to be parallel or perpendicular to the flexible filter layer.

[0010] As a further optimization of the oil fume purifier of the present invention: a water squeezing hole is arranged on the extrusion plate located below.

[0011] As a further optimization of the oil fume purifier of the present invention: the rotating shaft is arranged on the side of the extrusion plate, and the rotating shafts of the upper and lower extrusion plates in the same group are arranged relatively to each other, the extrusion plate located at the upper end can rotate downward around the rotating shaft to extrude the flexible filter layer, and the extrusion plate located at the lower end can rotate upward around the rotating shaft to extrude the flexible filter layer.

[0012] As a further optimization of the oil fume purifier of the present invention: the rotating shaft is arranged along the axis of the extrusion plate, and the rotating shaft can move along the vertical direction of the oil fume purification box.

[0013] As a further optimization of the oil fume purifier of the present invention: the oil fume purification box is also provided with a water supply port, and the water supply port is connected to a water source through a water supply pump.

[0014] As a further optimization of the oil fume purifier of the present invention: a liquid level sensor is also arranged at the bottom of the oil fume purification box, and the liquid level sensor is electrically connected to the controller of the water replenishment pump.

[0015] Beneficial Effects

[0016] 1. The oil fume purifier of the present invention has a good purification effect and has the characteristics of multiple oil fume purification treatments. First, the oil fume to be purified enters the water at the bottom of the oil fume purification box, and a part of the impurities in the oil fume will remain in the water, completing the first purification treatment; then, the high-temperature flue gas coming out of the water rises, enters the electrostatic precipitator after spraying, and undergoes the second purification treatment; finally, the flue gas treated by the electrostatic precipitator passes through a flexible filter layer to adsorb the impurities remaining in the flue gas, completing the third purification treatment. The flue gas after adsorption can be discharged into the atmosphere as clean flue gas;

[0017] 2. The oil fume purifier of the present invention is easy to maintain and has a low maintenance cost. On the one hand, the device uses an electrostatic precipitator that is more commonly used in the prior art, so that the device can be improved on the basis of the existing flue gas purifier, which is convenient for promotion in the market; on the other hand, a compressible flexible filter layer extrusion component is specially arranged in the device. When the moisture absorbed by the flexible filter layer is close to saturation, the flexible filter layer is squeezed by the extrusion component, so that the moisture absorbed by the flexible filter layer can be squeezed out and reflux to the bottom of the oil fume purification box. When the adsorption of the flexible filter layer is saturated, the flexible filter layer can be taken out through the operating hole on the side wall of the oil fume purification box, and a new flexible filter layer can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the oil fume purifier of the present invention;

[0019] Figure 2 This is a schematic structural diagram of an extrusion assembly (un-extruded state) of the oil fume purifier in Example 1 of the present invention;

[0020] Figure 3 This is a schematic structural diagram of an extrusion assembly (extrusion state) of the oil fume purifier in Example 1 of the present invention;

[0021] Figure 4 This is a schematic structural diagram of an extrusion assembly (un-extruded state) of a fume purifier in Example 2 of the present invention;

[0022] Figure 5 This is a schematic structural diagram of the extrusion assembly of the oil fume purifier in Example 2 of the present invention (the extrusion plate is rotated to a horizontal state);

[0023] Figure 6 This is a schematic structural diagram of an extrusion assembly (extrusion state) of a fume purifier in Example 2 of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the extrusion plate in the oil fume purifier of the present invention;

[0025] Markings in the figure: 1. Oil fume purification box, 2. Oil fume inlet pipe, 3. Flexible filter layer, 4. Oil fume inlet, 5. Sewage outlet, 6. Electrostatic precipitator, 7. Spray pipe, 8. Spray head, 9. Extrusion plate, 10. Rotating shaft, 11. Water squeezing hole, 12. Demisting plate. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described below in conjunction with specific implementation methods.

[0027] Example 1

[0028] like Figure 1As shown: a fume purifier, including a fume purification box 1, a fume inlet pipe 2, an electrostatic precipitator 6, a spray assembly, a flexible filter layer 3 and an extrusion assembly of the compressible flexible filter layer 3, the flexible filter layer 3 is a synthetic fiber filter cotton, the flexible filter layer 3 is arranged above the electrostatic precipitator 6, the flexible filter layer 3 can be simply fixed in the fume purification box 1, and can also be placed in the fume purification box 1 by the force of extrusion deformation, and the side wall of the fume purification box 1 is provided with an operation hole corresponding to the flexible filter layer 3, so as to facilitate the removal of the invalid flexible filter layer 3. The electrostatic precipitator 6 adopts a mature electrostatic precipitator in the prior art. The oil fume purification box 1 is provided with an oil fume inlet 4 and a sewage outlet 5. The oil fume inlet 4 is arranged on the side wall of the oil fume purification box 1, and the sewage outlet 5 is arranged at the bottom of the oil fume purification box 1. The sewage outlet 5 is provided with a sewage valve. The oil fume inlet pipe 2 extends into the oil fume purification box 1 from the oil fume inlet 4, and the smoke outlet of the oil fume inlet pipe 2 is located below the liquid surface through a bend pipe. Such a structure allows the smoke to directly enter the water at the bottom of the oil fume purification box 1, which is conducive to the dissolution of some substances in the smoke in the water. Since the oil-water mixture in the oil fume purification box 1 will separate the oil through the oil-water separator, and some sewage will also be discharged through the sewage outlet, therefore, a water supply port is also provided on the side wall of the oil fume purification box 1, and the water supply port is connected to the water source through a water supply pump. A liquid level sensor is also provided at the bottom of the oil fume purification box 1, and the liquid level sensor is electrically connected to the controller of the water supply pump. When the liquid level sensor detects that the liquid level of the oil fume purification box 1 is lower than the set liquid level, the controller sends an instruction to the water supply pump to start the water supply pump to supply water to the oil fume purification box 1. The spray assembly includes a spray pipe 7, a plurality of spray heads 8 arranged on the spray pipe 7, and a circulation pump. The spray pipe 7 is horizontally arranged below the electrostatic precipitator 6, and the plurality of spray heads 8 are evenly distributed along the length direction of the spray pipe 7. The water inlet of the circulation pump is connected to the bottom of the oil fume purification box 1 through a pipeline, and the water outlet of the circulation pump is connected to the spray pipe 7 through a pipeline. According to actual conditions, multiple spray pipes 7 can be arranged side by side. The arrangement of the spray assembly can make the flue gas contact with the sprayed water during the rising process, thereby improving the purification effect. A demister plate 12 is provided between the spray assembly and the electrostatic precipitator 6. The demister plate 12 is used to remove water mist in the flue gas to prevent the flue gas from carrying water mist into the electrostatic precipitator 6. The demister plate 12 can adopt a mature de-mist device in the prior art.

[0029] like Figure 2 , 3As shown in Figure 7: the extrusion assembly includes a plurality of groups of extrusion plates 9 arranged side by side, each group of extrusion plates 9 includes two extrusion plates 9 respectively arranged above and below the flexible filter layer 3 through a rotating shaft 10, and the extrusion plates 9 can rotate around the rotating shaft 10 to be parallel or perpendicular to the flexible filter layer 3. The rotating shaft 10 is arranged on the side of the extrusion plate 9, and the rotating shafts 10 of the upper and lower extrusion plates 9 in the same group are arranged oppositely, the extrusion plate 9 located at the upper side can rotate downward around the rotating shaft 10 to extrude the flexible filter layer 3, and the extrusion plate 9 located at the lower side can rotate upward around the rotating shaft 10 to extrude the flexible filter layer 3, and the extrusion plate 9 located at the lower side is provided with a squeezing hole 11. In normal operation, the extrusion plate 9 is in a vertical state, which does not affect the normal discharge of smoke. One end of the rotating shaft 10 extends out from the side wall of the oil fume purification box 1. The rotating shaft 10 can be rotated by manual operation to achieve the extrusion of the flexible filter layer 3. All the rotating shafts 10 can also be linked by a linkage mechanism and then rotated by a motor. There are many structures in the prior art that can achieve this function (for example, in the form of sprockets and chains, the sprockets are sleeved on the rotating shaft, the chain connects multiple sprockets together, and the sprockets are driven to rotate together by the motor and the chain), which will not be described in detail in this embodiment.

[0030] The working principle of the oil fume purifier of this embodiment is as follows: the oil fume to be purified enters the water at the bottom of the oil fume purification box, and part of the impurities in the oil fume will remain in the water, completing the first purification treatment; then, the high-temperature flue gas coming out of the water rises, enters the electrostatic precipitator after spraying, and undergoes the second purification treatment; finally, the flue gas treated by the electrostatic precipitator passes through the flexible filter layer, adsorbs the impurities remaining in the flue gas, and completes the third purification treatment. The flue gas after adsorption can be discharged into the atmosphere as clean flue gas. When the moisture absorbed by the flexible filter layer reaches saturation, the rotating shaft in the extrusion assembly is rotated, and the upper and lower rotating shafts of the same group rotate in opposite directions, so that the upper extrusion plate is squeezed downward and the lower extrusion plate is squeezed upward, completing the extrusion of the flexible filter layer. During the extrusion process, the moisture in the flexible filter layer flows to the bottom of the oil fume purification box through the squeezing holes and other gaps.

[0031] Example 2

[0032] like Figure 4-7As shown: the purifier of this embodiment has the same overall structure as that of embodiment 1, except that: the extrusion assembly includes a plurality of groups of extrusion plates 9 arranged side by side, each group of extrusion plates 9 includes two extrusion plates 9 respectively arranged above and below the flexible filter layer 3 through a rotating shaft 10, and the extrusion plates 9 can rotate around the rotating shaft 10 to be parallel or perpendicular to the flexible filter layer 3. The rotating shaft 10 is arranged along the axis of the extrusion plate 9, and the rotating shaft 10 can move in the vertical direction of the oil fume purification box 1. In the existing mechanical structure, there are many structures that can realize the rotation of the rotating shaft 10 and can move up and down. A horizontal linkage bar can be set on the side wall of the inner wall of the oil fume purification box 1 corresponding to the two ends of the rotating shaft 10. The end of the rotating shaft 10 is inserted into the linkage bar and can rotate freely. Sprockets are respectively sleeved at both ends of the rotating shaft 10. The sprockets of multiple rotating shafts 10 are linked by chains. The chains are connected to the motor in a transmission manner. The multiple rotating shafts 10 can be driven by the motor to rotate together. At the same time, the linkage bar can move along the vertical direction of the oil fume purification box 1 through the track, and the linkage bar is connected with an electric push rod, which can be moved up and down by the electric push rod. The control end of the electric push rod and the motor is set outside the oil fume purification box 1. In the normal operating state, the extrusion plate 9 is in a vertical state, which does not affect the normal discharge of smoke. When the flexible filter layer 3 needs to be extruded, the rotating shaft 10 is rotated to make the extrusion plate 9 in a horizontal state, and then the rotating shaft 10 drives the extrusion plate 9 to move downward to complete the extrusion of the flexible filter layer 3.

[0033] The working principle of the oil fume purifier of this embodiment is as follows: the oil fume to be purified enters the water at the bottom of the oil fume purification box, and part of the impurities in the oil fume will remain in the water, completing the first purification treatment; then, the high-temperature flue gas coming out of the water rises, enters the electrostatic precipitator after spraying, and undergoes the second purification treatment; finally, the flue gas treated by the electrostatic precipitator passes through the flexible filter layer, adsorbs the impurities remaining in the flue gas, and completes the third purification treatment. The flue gas after adsorption can be discharged into the atmosphere as clean flue gas. When the moisture absorbed by the flexible filter layer reaches saturation, the rotating shaft in the extrusion assembly is rotated, and the upper and lower rotating shafts of the same group rotate in opposite directions, so that the upper extrusion plate is squeezed downward and the lower extrusion plate is squeezed upward, completing the extrusion of the flexible filter layer. During the extrusion process, the moisture in the flexible filter layer flows to the bottom of the oil fume purification box through the squeezing holes and other gaps.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A fume purifier, characterized in that: The oil fume purification box (1) comprises an oil fume inlet pipe (2), a spray assembly, an electrostatic precipitator (6), a flexible filter layer (3) and an extrusion assembly of the compressible flexible filter layer (3), wherein the oil fume purification box (1) is provided with an oil fume inlet (4) and a sewage outlet (5), the electrostatic precipitator (6) is arranged in the middle of the oil fume purification box (1), the flexible filter layer (3) is arranged above the electrostatic precipitator (6), and the spray assembly is arranged below the electrostatic precipitator (6); The extrusion assembly comprises a plurality of groups of extrusion plates (9) arranged side by side, each group of extrusion plates (9) comprises two extrusion plates (9) respectively arranged above and below the flexible filter layer (3) via a rotating shaft (10), the extrusion plates (9) can rotate around the rotating shaft (10) to be parallel or perpendicular to the flexible filter layer (3), and a water squeezing hole (11) is arranged on the extrusion plate (9) located at the bottom; The rotating shaft (10) is arranged on the side of the extrusion plate (9), and the rotating shafts (10) of the upper and lower extrusion plates (9) in the same group are arranged opposite to each other. The extrusion plate (9) located at the upper side can rotate downward around the rotating shaft (10) to extrude the flexible filter layer (3), and the extrusion plate (9) located at the lower side can rotate upward around the rotating shaft (10) to extrude the flexible filter layer (3).

2. A fume purifier according to claim 1, characterized in that: The spray assembly comprises a spray pipe (7), a plurality of spray heads (8) arranged on the spray pipe (7), and a circulation pump; the spray pipe (7) is horizontally arranged below the electrostatic precipitator (6); the plurality of spray heads (8) are evenly distributed along the length direction of the spray pipe (7); a water suction port of the circulation pump is connected to the bottom of the oil fume purification box (1) through a pipeline; and a water outlet of the circulation pump is connected to the spray pipe (7) through a pipeline.

3. The oil fume purifier according to claim 1, characterized in that: A demisting plate (12) is provided between the spray assembly and the electrostatic precipitator (6).

4. The oil fume purifier according to claim 1, characterized in that: The rotating shaft (10) is arranged along the axis of the extrusion plate (9), and the rotating shaft (10) can move along the vertical direction of the oil fume purification box (1).

5. The oil fume purifier according to claim 1, characterized in that: The oil fume purification box (1) is also provided with a water supply port, which is connected to a water source via a water supply pump.

6. A fume purifier as claimed in claim 5, characterized in that: A liquid level sensor is also provided at the bottom of the oil fume purification box (1), and the liquid level sensor is electrically connected to the controller of the water replenishment pump.

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