Central kitchen high-voltage electrostatic field oil fume purification equipment

Abstract

The utility model relates to central kitchen high pressure electrostatic field oil fume purification equipment, including filter mechanism and high pressure electrostatic treatment mechanism, and high pressure electrostatic treatment mechanism is provided with air inlet and air outlet, and air inlet links to filter mechanism, the top of washing tank is connected with liquid inlet pipe, and liquid inlet pipe is connected with liquid storage tank, and the circulation pump is set up on liquid inlet pipe, and the bottom of washing tank is provided with liquid outlet pipe, and liquid outlet pipe links to liquid storage tank, the top of washing tank is connected with suction mechanism, the utility model discloses through the increase setting washing tank, and the oil fume is removed after the solid particle of big particle and oil through filtration and high pressure electrostatic treatment removes most small particulate matter, then utilizes washing liquid to wash the oil fume, has realized to the oil fume in the particle, oil, gaseous peculiar smell all -round, nearly thorough purification, and the purification effect has obtained the promotion, and the smoke gas of emission is no smoke, and the nose is no smell, and completely satisfies environmental protection standard.

Description

Technical Field

[0001] This utility model belongs to the field of oil fume treatment equipment, and in particular, it is a high-voltage electrostatic field oil fume purification device for central kitchens. Background Technology

[0002] Central kitchens generate large amounts of oil fumes during the cooking and frying of food. These fumes need to be treated before being discharged to prevent environmental pollution. Currently, many fume extraction systems are equipped with high-voltage electrostatic field fume purifiers. The working principle of a high-voltage electrostatic field fume purifier is as follows: after initial filtration, the oil fumes enter a high-voltage electrostatic field. The high-voltage power supply ionizes air molecules, generating free electrons and ions. Oil fume particles collide with these ionized particles and become charged, forming charged particles. Under the influence of the electric field, these charged particles move towards a dust collection plate of opposite polarity and deposit. The deposited oil droplets flow into the oil collection tank under gravity and are then intercepted by a filter before being discharged. Although the high-voltage electrostatic field can remove most of the oil fume particles from the gas, gaseous pollutants such as aldehydes and sulfides may still be present and cannot be removed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a high-voltage electrostatic field oil fume purification device for central kitchens, which can remove particulate matter, grease, and odorous gases from oil fume air and improve the purification effect.

[0004] To solve the above problems, the technical solution adopted by this utility model is: a central kitchen high-voltage electrostatic field oil fume purification equipment, including a filtration mechanism and a high-voltage electrostatic treatment mechanism. The high-voltage electrostatic treatment mechanism is provided with an air inlet and an air outlet, and the air inlet is connected to the filtration mechanism.

[0005] The air outlet is connected to a washing tank, which is equipped with a stirring mechanism. The top of the washing tank is connected to a liquid inlet pipe, which is connected to a liquid storage tank. A circulation pump is installed on the liquid inlet pipe. The bottom of the washing tank is equipped with a drain pipe, which is connected to the liquid storage tank. The top of the washing tank is connected to an air suction mechanism.

[0006] Furthermore, the stirring mechanism includes a vertical stirring shaft, a horizontal support plate is sleeved on the stirring shaft, a mesh cylinder is provided on the edge of the support plate, and a mixing gap is provided between the mesh cylinder and the inner wall of the washing tank; one end of the stirring shaft extends out of the washing tank and is connected to a stirring motor.

[0007] Furthermore, the washing tank is cylindrical, and the stirring shaft is coaxial with the washing tank.

[0008] Furthermore, the filtration mechanism includes a filter box, which is equipped with multiple inclined baffles. A filter screen is installed above the baffles. The bottom of the filter box is connected to a gas collection hood via a gas collection pipe. The top of the filter box is connected to a high-voltage electrostatic treatment mechanism.

[0009] Furthermore, a removable collection box is provided at the bottom of the filter box.

[0010] Furthermore, the washing tank is connected to the air intake mechanism via an exhaust pipe, and a sampling valve is installed on the exhaust pipe.

[0011] Furthermore, the air intake mechanism is an air intake fan.

[0012] The beneficial effects of this utility model are as follows: By adding a washing box, the oil fumes are filtered to remove large solid particles and grease, and high-voltage electrostatic treatment removes most of the small particulate matter. Then, the oil fumes are washed with washing liquid, which achieves comprehensive and almost thorough purification of particulate matter, grease and gaseous odors in the oil fumes. The purification effect is improved, and the emitted smoke is visually smokeless and odorless, fully meeting environmental protection standards. Attached Figure Description

[0013] Figure 1 This is an overall schematic diagram of the present invention;

[0014] Reference numerals: 1—Filtering mechanism; 11—Sampling valve; 12—Baffle plate; 13—Filter screen; 14—Gas collection pipe; 15—Gas collection hood; 16—Collection box; 2—High-voltage electrostatic treatment mechanism; 21—Air inlet; 22—Air outlet; 3—Washing tank; 31

[0015] —Inlet pipe; 33—Storage tank; 34—Circulation pump; 35—Drain pipe; 36—Stirring shaft; 37—Support plate; 38—Stirring motor; 39—Drain pipe; 310—Mesh cylinder; 311—Mixing gap; 312—Sampling valve; 4—Suction mechanism. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] This utility model relates to a high-voltage electrostatic field oil fume purification device for central kitchens, such as... Figure 1 As shown, it includes a filter mechanism 1 and a high-voltage electrostatic treatment mechanism 2. The high-voltage electrostatic treatment mechanism 2 is provided with an air inlet 21 and an air outlet 22. The air inlet 21 is connected to the filter mechanism 1.

[0018] The filter mechanism 1 is used for preliminary filtration of oil fumes, removing larger solid and liquid particles and reducing the processing burden on the subsequent high-voltage electrostatic treatment mechanism 2. Specifically, the filter mechanism 1 includes a filter box 11, which can be a rectangular box structure and is vertically arranged. Multiple inclined baffles 12 are installed inside the filter box 11, mounted on both side walls of the filter box 11, with the upper end of the baffles 12 connected to the side walls of the filter box 11. The baffles 12 on the two side walls are alternately arranged, forming a serpentine airflow channel between the baffles 12. A filter screen 13 is installed above the baffles 12, with multiple filter holes for filtering out large solid and liquid particles. The filter screen 13 can be an existing steel wire filter. The bottom of the filter box 11 is connected to a gas collection hood 15 via a gas collection pipe 14. The gas collection hood 15 can be installed above the kitchen equipment that generates oil fumes to collect the oil fumes and transport them to the filter mechanism 1. The top of the filter box 11 is connected to the air inlet 21 of the high-voltage electrostatic treatment mechanism 2. After the initial filtration by the filter box 11, the oil fumes can move into the interior of the high-voltage electrostatic treatment mechanism 2.

[0019] The working process of this filtration mechanism 1 is as follows: After the oil fumes are collected by the gas collection hood 15, they are transported to the filter box 11 through the gas collection pipe 14. The oil fumes move from bottom to top in the filter box 11. When the oil fumes reach each baffle 12, some of the grease and solid particles in the oil fumes adhere to the baffle 12, reducing the particle concentration in the oil fumes. As the grease on the baffle 12 gathers into larger droplets, it will slide down along the baffle 12 under the action of gravity to the lower edge of the baffle 12 and drip down. Finally, the grease on each baffle 12 will drip to the bottom of the filter box 11. After passing through the baffle 12, the oil fumes reach the filter screen 13. After further filtration by the filter screen 13, large particles in the oil fumes are intercepted, while small particles and gas pass through the filter holes of the filter screen 13 and then enter the air inlet 21 of the high-voltage electrostatic treatment mechanism 2.

[0020] To facilitate the cleaning of grease accumulated at the bottom of the filter box 11, a removable collection box 16 is provided at the bottom of the filter box 11. The bottom of the filter box 11 can be designed as a frustum shape with a larger upper end and a smaller lower end to facilitate the collection of grease. The collection box 16 can be connected to the filter box 11 with screws, making it easy to install and remove.

[0021] The high-voltage electrostatic treatment unit 2 is used to perform high-voltage electrostatic treatment on the filtered oil fumes, which can be achieved using existing technology.

[0022] To remove odorous gases from the fumes, the outlet 22 of the high-voltage electrostatic treatment mechanism 2 is connected to a washing tank 3. The washing tank 3 is equipped with a stirring mechanism. The top of the washing tank 3 is connected to a liquid inlet pipe 31, which is connected to a liquid storage tank 33. A circulation pump 34 is installed on the liquid inlet pipe 31. The bottom of the washing tank 3 is equipped with a drain pipe 35, which is connected to the liquid storage tank 33. The top of the washing tank 3 is connected to a suction mechanism 4.

[0023] Washing tank 3 contains washing liquid, which includes emulsifier, alkali and dispersant. The emulsifier can be AEO series fatty alcohol polyoxyethylene ether, the dispersant can be sodium polyacrylate, and the alkali can be sodium hydroxide. The emulsifier, alkali and dispersant are added to water and stirred evenly to obtain the washing liquid.

[0024] The outlet 22 of the high-voltage electrostatic treatment mechanism 2 is connected to the lower part of the washing tank 3. After the oil fumes have been treated by the high-voltage electrostatic treatment, they flow upward into the washing tank 3. At the same time, the circulating pump 34 drives the washing liquid into the top of the inner cavity of the washing tank 3. The washing liquid flows downward in the washing tank 3. Under the action of the stirring mechanism, the washing liquid and oil fumes are fully and evenly mixed. The washing liquid can absorb gaseous substances such as aldehydes and sulfides in the oil fumes, and remove some residual particulate matter, thereby purifying the oil fumes more thoroughly. The purified oil fumes are odorless and meet environmental protection requirements. The washed oil fumes are discharged from the top of the washing tank 3. The suction mechanism 4 is used to suck the oil fumes into the gas collection hood 15, providing power for the flow of oil fumes in the filter mechanism 1, the high-voltage electrostatic treatment mechanism 2, and the washing tank 3. The suction mechanism 4 is set at the end of the purification system. The oil fumes pass through the suction mechanism 4 after purification, which avoids the oil, solid particles, etc. in the oil fumes adhering to the suction mechanism 4 and affecting its performance.

[0025] The stirring mechanism can adopt a conventional structure, such as using stirring blades for stirring. In a preferred embodiment, the stirring mechanism includes a vertical stirring shaft 36, on which a horizontal support plate 37 is sleeved. A mesh cylinder 310 is provided on the edge of the support plate 37. The mesh cylinder 310 can be made of wire mesh and has multiple fine mesh holes. A mixing gap 311 is provided between the mesh cylinder 310 and the inner wall of the washing tank 3. One end of the stirring shaft 36 extends out of the washing tank 3 and is connected to a stirring motor 38.

[0026] The stirring motor 38 drives the stirring shaft 36 to rotate, which in turn drives the support plate 37 and the mesh cylinder 310 to rotate. After the washing liquid enters the washing tank 3, it falls onto the support plate 37. The rotation of the support plate 37 generates centrifugal force, which throws the washing liquid on the support plate 37 outwards. The washing liquid is dispersed upon reaching the mesh cylinder 310 and then sprayed into the mixing gap 311. Figure 1 As shown, Figure 1In the diagram, hollow arrows indicate the path of the oil fume movement, while solid arrows indicate the path of the washing liquid movement. After the oil fume enters the bottom of the washing tank 3, it flows upward through the mixing gap 311, allowing it to fully contact the dispersed washing liquid and ensuring that the washing liquid can absorb the harmful gases in the oil fume.

[0027] In this invention, the washing tank 3 is cylindrical, and the stirring shaft 36 is coaxial with the washing tank 3. The mesh cylinder 310 is also coaxial with the stirring shaft 36, so that an annular mixing gap 311 is formed between the stirring shaft 36 and the inner wall of the washing tank 3, which is conducive to the uniform mixing of oil fumes and washing liquid.

[0028] To facilitate regular testing of the system's purification effect, the washing tank 3 is connected to the suction mechanism 4 via an exhaust pipe 39, on which a sampling valve 312 is installed. The filter mechanism 1, high-voltage electrostatic treatment mechanism 2, washing tank 3, and suction mechanism 4 are generally installed indoors. The suction mechanism 4 also discharges the treated fumes outdoors via the exhaust pipe 39. For convenient sampling, a sampling valve 312 is installed on the exhaust pipe 39 located between the suction mechanism 4 and the washing tank 3. When sampling is required, the sampling valve 312 is opened, and some of the gas in the exhaust pipe 39 is discharged through the sampling valve 312, allowing for gas collection and testing.

[0029] In this utility model, the air intake mechanism 4 is an air intake fan.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A central kitchen high-voltage electrostatic field oil fume purification device, comprising a filtration mechanism (1) and a high-voltage electrostatic treatment mechanism (2), wherein the high-voltage electrostatic treatment mechanism (2) is provided with an air inlet (21) and an air outlet (22), and the air inlet (21) is connected to the filtration mechanism (1); characterized in that: The air outlet (22) is connected to a washing tank (3), and a stirring mechanism is provided inside the washing tank (3). The top of the washing tank (3) is connected to a liquid inlet pipe (31), and the liquid inlet pipe (31) is connected to a liquid storage tank (33). A circulation pump (34) is provided on the liquid inlet pipe (31). A drain pipe (35) is provided at the bottom of the washing tank (3), and the drain pipe (35) is connected to the liquid storage tank (33). An air suction mechanism (4) is connected to the top of the washing tank (3).

2. The central kitchen high-voltage electrostatic field oil fume purification equipment as described in claim 1, characterized in that: The stirring mechanism includes a vertical stirring shaft (36), a horizontal support plate (37) is sleeved on the stirring shaft (36), a mesh cylinder (310) is provided on the edge of the support plate (37), and a mixing gap (311) is provided between the mesh cylinder (310) and the inner wall of the washing tank (3); one end of the stirring shaft (36) extends out of the washing tank (3) and is connected to a stirring motor (38).

3. The central kitchen high-voltage electrostatic field oil fume purification equipment as described in claim 2, characterized in that: The washing tank (3) is cylindrical, and the stirring shaft (36) is coaxial with the washing tank (3).

4. The central kitchen high-voltage electrostatic field oil fume purification equipment as described in claim 1, characterized in that: The filtration mechanism (1) includes a filter box (11), which is provided with multiple inclined baffles (12). A filter screen (13) is provided above the baffles (12). The bottom of the filter box (11) is connected to a gas collection hood (15) through a gas collection pipe (14). The top of the filter box (11) is connected to a high-voltage electrostatic treatment mechanism (2).

5. The central kitchen high-voltage electrostatic field oil fume purification equipment as described in claim 4, characterized in that: The bottom of the filter box (11) is provided with a removable collection box (16).

6. The central kitchen high-voltage electrostatic field oil fume purification equipment as described in claim 1, characterized in that: The washing tank (3) is connected to the suction mechanism (4) through the vent pipe (39), and a sampling valve (312) is provided on the vent pipe (39).

7. The central kitchen high-voltage electrostatic field oil fume purification equipment as described in claim 1, characterized in that: The air intake mechanism (4) is an air intake fan.

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