CN203090705U - Oil fume purification device - Google Patents

Abstract

The utility model relates to a purifying device for oil fume, which is characterized in that a circular cyclone degreaser is arranged above the gas collecting hood, and the flue gas enters the flue gas cyclone system through a tangential pipe. The air volume regulating valve at the back end of the cyclone system can control the air volume, and the variable pipe diameter system realizes the rapid change of pipe diameter through the arc-shaped metal plate, so as to further remove the grease in the flue gas. The ultraviolet system is equipped with two sets of ultraviolet lamp tubes, wherein the axial ultraviolet lamp tubes are installed in the axial ultraviolet lamp tube box, and the horizontal ultraviolet lamp tubes are fixed by the horizontal ultraviolet lamp tube frame. The device is equipped with an oil collecting tank, which regularly discharges the oil accumulated in the pipe. The high-power centrifugal fan is installed outdoors. The utility model has high purification ability for oily fumes, can remove oily fumes and some harmful gases at the same time, is convenient for equipment operation and maintenance, has low energy consumption, simple structure, small pressure drop, strong air exhaust ability and high space utilization rate.

Description

A purifying device for oil fume

technical field

The utility model relates to a composite catering fume purification device, which is mainly used for purifying and treating the oily fumes produced in the operation process of large and medium-sized catering industries.

Background technique

In recent years, with the improvement of the living standards of Chinese residents, residents have paid more and more attention to the environment. However, the current emission of cooking fume in the catering industry generally exceeds the emission standards stipulated by the state, and the resulting complaints about cooking fume pollution in the catering industry are also increasing. increment. According to statistics, similar complaints account for about 30% of environmental complaints.

Cooking fume is produced by thermo-oxidative decomposition or pyrolysis of oil and protein in food during cooking. Its components are extremely complex. Relevant studies have shown that there are at least 300 components in cooking fume, mainly fatty acids, alkanes, olefins, and aldehydes. , ketones, alcohols, esters, aromatic compounds and heterocyclic compounds, many of which (benzo[a]pyrene (BaP), dibenzo[a,h]anthracene (DBahA), benzo[a]anthracene [BaA], Dibenzo[a, b]anthracene (DBabA), benzo[e]pyrene (BeP) and other polycyclic hydrocarbons) have chemical toxic components, damage the lungs and immune system of the human body, and are carcinogenic and mutagenic. Statistics show that the incidence of nasopharyngeal cancer in the cooking industry is higher than that in other occupations, and cooking fumes are also an important factor in causing lung cancer. In addition, it was found that oil fume exposure has a certain inhibitory effect on the body's immune system. It can be seen that the purification treatment of oily flue gas is very necessary.

The current large and medium-sized catering enterprises usually have the following problems in the treatment and emission of oil fume: 1. The exhaust capacity of the oil fume exhaust equipment is insufficient, resulting in a large amount of oil fume that cannot be discharged through the smoke exhaust system, and escapes into the canteen, affecting the dining environment of customers; 2. The purification effect of the smoke exhaust purification equipment is poor, and the smoke exhaust affects the surrounding residents; 3. The accumulation of grease in the flue leads to frequent oil dripping and oil leakage, and excessive grease accumulation causes potential safety hazards; 4. The noise of the indoor exhaust fan is too loud.

In view of the above problems, it is necessary to develop a purification device for oily fume with large suction volume and strong air exhaust capacity, so as to further solve the problem of oily fume pollution in large and medium-sized catering industries.

Contents of the invention

In order to solve the above-mentioned exhaust, purification, oil accumulation and noise problems, the utility model provides an oily fume purification device, which is used to purify and treat oily fume generated during the operation of large and medium-sized catering enterprises.

The purpose of this utility model is to realize through the following technical solutions:

A purification device for oil fume, which is composed of a gas collecting hood, a cyclone system intake pipe, a cyclone degreaser, a cyclone system oil collecting tank and corresponding 1# oil discharge holes, a cyclone system outlet pipe, an air volume regulating valve, and a regulating valve Control handle, front oil collection tank and 2# oil drain hole of variable pipe diameter system, arc metal plate for variable pipe diameter, axial ultraviolet lamp box, axial ultraviolet lamp tube, ultraviolet system smoke exhaust pipe, horizontal ultraviolet lamp tube frame , Horizontal UV lamp tube, UV system oil collection tank and corresponding 3# oil drain hole, outdoor vertical pipe with cover oil drain hole, outdoor vertical pipe, centrifugal fan, air exhaust port, activated carbon adsorber. The cyclone degreaser is installed on the top of the gas collecting hood and connected to the inlet pipe of the cyclone system. The cyclone system oil collection tank and the 1# oil discharge hole on the tank are set under the cyclone degreaser. It is perpendicular to the air inlet pipe of the cyclone system and communicates with the exhaust pipe of the ultraviolet system. The air volume regulating valve and the control handle of the regulating valve are arranged at the rear end of the exhaust pipe of the ultraviolet system. The UV system oil collection tank and the 2# oil drain hole on the tank are set at the bottom, the arc metal plate for changing the diameter of the tube, the horizontal UV lamp tube frame and the horizontal UV lamp tube are set in the middle, and the axial UV lamp box and the box top are installed at the top. For some axial ultraviolet lamp tubes, the axial ultraviolet lamp tube is installed in the axial ultraviolet lamp tube box, the horizontal ultraviolet lamp tube is fixed in the flue by the horizontal ultraviolet lamp tube frame, and the bottom of the exhaust pipe of the ultraviolet system is a slope, The rear end of the exhaust pipe of the ultraviolet system is provided with the oil collection tank of the ultraviolet system and the 3# oil discharge hole on the tank. After irradiation, the flue gas enters the ultraviolet system and the exhaust pipe is connected to the outdoor vertical pipe at the rear end. There is an oil discharge hole with a cover at the bottom of the outdoor vertical pipe. The outdoor vertical pipe is connected to the centrifugal fan, and an activated carbon adsorber is installed at the exhaust outlet of the centrifugal fan. .

Advantage of the utility model and the beneficial effect that produce:

1. The utility model adopts the inertial separation method to carry out the first step of treatment on the flue gas containing high concentration of oil produced in the production process of catering enterprises, and separates the oil droplets with larger particle diameters in the flue gas through centrifugal action. The flue gas enters the variable pipe diameter system - the exhaust pipe of the ultraviolet system, the flue pipe diameter first becomes smaller and then becomes larger, the flue gas flow rate will decrease in front of the metal baffle, and the flue gas pressure will increase. The oil droplets in the flue gas are separated from the air flow and deposited. After that, the flue gas is catalyzed and decomposed by ultraviolet lamps, and then discharged to the outside through the outdoor flue. The whole system is powered by a high-power centrifugal fan installed outdoors.

2. The utility model combines the common advantages of inertial separation and ultraviolet catalysis, with convenient operation and maintenance, low energy consumption, simple equipment and small pressure drop. The device combines the advantages of high removal rate of large particle size grease by inertial separation and high purification efficiency of small particle size grease by ultraviolet catalysis. The treatment efficiency of the whole system is as high as 90%, which can ensure the discharge of oily fume up to the standard. At the same time, ultraviolet catalytic decomposition can effectively eliminate oil fumes and odors. The design of the oil collection tank solves the problem of grease accumulation in the flue. At the same time, setting the centrifugal fan outdoors solves the problem of fan noise pollution.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Figure 1, a purification device for oil fume is composed of a gas collection hood 1, a cyclone system intake pipe 2, a cyclone degreaser 3, a cyclone system oil collection tank 5, 1# oil discharge hole 4, and a cyclone system outlet Air pipe 6, air volume regulating valve 7, regulating valve control handle 8, front oil sump of variable pipe diameter system 10, 2# oil drain hole 9, arc metal plate for variable pipe diameter 11, axial ultraviolet lamp box 12, shaft To the ultraviolet lamp 13, ultraviolet system smoke exhaust pipe 14, horizontal ultraviolet lamp rack 15, horizontal ultraviolet lamp 16, ultraviolet system oil collection tank 17, 3# oil drain hole 18, outdoor vertical pipe with cover oil drain hole 19, outdoor Vertical pipe 20, centrifugal fan 21, air outlet 22, active carbon adsorber 23 are formed. The cyclone degreaser 3 is installed above the gas collecting hood 1 and connected tangentially with the cyclone system intake pipe 2, and the cyclone system oil collection tank 5 and the 1# oil drain hole 4 on the tank are arranged under the cyclone degreaser 3, and the bottom surface of the tank is oblique , the air outlet pipe 6 of the cyclone system is connected tangentially with the oil removal pipe 3, and is vertical to the air inlet pipe 2 of the cyclone system, and communicates with the smoke exhaust pipe 14 of the ultraviolet system. Under the front end of the smoke exhaust pipe 14 of the system, there is an oil collection tank 10 and the 2# oil discharge hole 9 on the tank. Under the rear end, an ultraviolet system oil collection tank 17 and the 3# oil discharge hole 18 on the tank are arranged. Metal plate 11, horizontal ultraviolet lamp tube frame 15 and horizontal ultraviolet lamp tube 16, the axial ultraviolet lamp tube box 12 and the axial ultraviolet lamp tube 13 that are housed on the top are equipped with, and wherein axial ultraviolet lamp tube 13 sets four A lamp tube, its power is 150w, four ultraviolet lamp tubes are arranged in a single row and installed in the axial ultraviolet lamp tube box 12, and the horizontal ultraviolet lamp tube 16 is placed horizontally, and this group of lamp tubes is also composed of four lamp tubes with a power of 150w. Root lamp tube is formed, and four lamp tubes are placed in two rows, two in every row, fixed in the flue by horizontal ultraviolet lamp tube frame 15. The lower bottom of the exhaust pipe 14 of the ultraviolet system is an inclined plane, which has a certain downward slope along the direction of the airflow. Oil sump 17, the collected grease is discharged from the oil discharge hole 18 that the bottom of the oil sump is opened. The rear end of the ultraviolet system exhaust pipe 14 is provided with an ultraviolet system oil collection tank 17 and an oil discharge hole 18 in the groove. After irradiation, the flue gas enters the ultraviolet system smoke exhaust pipe 14, and the rear end is connected with the outdoor vertical pipe 20. The bottom of the outdoor vertical pipe 20 is provided with a covered oil discharge hole 19, which is used to regularly discharge the oil accumulated in the pipe. The outdoor standpipe 20 is connected with the high-power centrifugal fan 21. After exhausting, an activated carbon adsorber 23 is set through the exhaust outlet 22 at the rear end of the centrifugal fan 21, and the grease is further adsorbed and removed from the exhaust outlet 22.

The oily fumes from catering enterprises enter the circular cyclone degreaser 3 tangentially to form a cyclone, and the grease droplets in the oily fume are thrown to the wall of the circular pipe by centrifugal action and collected into the oil collection tank 5 at the bottom of the circular pipe. Due to the sudden reduction of the pipe diameter of the preliminarily treated oil fume, the flow rate of the oil fume flow decreases, and the pressure of the flue gas increases, causing a part of the grease to precipitate and deposit. After the first two steps of treatment, most of the larger oil droplets in the flue gas are removed. At this time, the oil fume enters the ultraviolet photocatalysis system, and the oil droplets with smaller particle sizes are irradiated by ultraviolet light, and the molecular structure of the oil changes, making High molecular compounds are degraded into low molecular compounds. Ultraviolet light beams decompose oxygen molecules in the air to generate free oxygen, that is, active oxygen. Because the positive and negative electrons carried by free oxygen are unbalanced, they need to combine with oxygen molecules to generate ozone. Ozone has a strong oxidation effect on organic matter, and has a strong removal effect on oil fume and its odor. The flue gas enters the outdoor vertical pipe, and during this process, the flue gas and the generated ozone are fully mixed and reacted to further remove oil fumes and odors. The flue gas that has been treated up to the standard is discharged from the exhaust port. The whole system is provided with exhaust power by a high-power centrifugal fan 21 installed outdoors, and the fan is installed outdoors, which also solves the problem of fan noise pollution.

Claims (1)

1. A purification device for oil fume, which is composed of a gas collection hood (1), a cyclone system intake pipe (2), a cyclone degreaser (3), a cyclone system oil collection tank (5), and 1# oil discharge hole ( 4), cyclone system air outlet pipe (6), air volume regulating valve (7), regulating valve control handle (8), variable pipe diameter system front oil collection tank (10), 2# oil discharge hole (9), variable pipe diameter Arc metal plate (11), axial ultraviolet lamp box (12), axial ultraviolet lamp (13), ultraviolet system exhaust pipe (14), horizontal ultraviolet lamp frame (15), horizontal ultraviolet lamp (16), UV system oil collection tank (17), 3# oil drain hole (18), outdoor vertical pipe with cover oil drain hole (19), outdoor vertical pipe (20), centrifugal fan (21), air exhaust port ( 22), composed of activated carbon adsorber (23), characterized in that the cyclone degreaser (3) is installed above the gas collecting hood (1) and connected to the cyclone system intake pipe (2), and the cyclone degreaser (3) is set under the cyclone The system oil collection tank (5) and the 1# oil discharge hole (4) on the tank, the air outlet pipe (6) of the cyclone system is connected tangentially to the oil removal pipe (3), and is perpendicular to the air inlet pipe (2) of the cyclone system, It is connected with the smoke exhaust pipe (14) of the ultraviolet system, and the air volume regulating valve (7) and the control handle (8) of the regulating valve are arranged at the rear end, and the oil collecting tank (10) and the oil collecting tank (10) on the tank are arranged under the front end of the smoke exhaust pipe of the ultraviolet system (14). 2# oil drain hole (9), the ultraviolet system oil collection tank (17) and the 3# oil drain hole (18) on the tank are set under the rear end, the arc metal plate (11) for changing pipe diameter is set in the middle, and the horizontal ultraviolet lamp The tube frame (15) and the horizontal ultraviolet lamp tube (16) are equipped with an axial ultraviolet lamp box (12) and an axial ultraviolet lamp tube (13) mounted on the box, and the axial ultraviolet lamp tube (13) is installed In the axial ultraviolet lamp box (12), the horizontal ultraviolet lamp (16) is fixed in the flue by the horizontal ultraviolet lamp frame (15). The back end of the smoke pipe (14) is provided with the UV system oil collection tank (17) and the 3# oil discharge hole (18) on the tank. After irradiation, the smoke enters the UV system smoke exhaust pipe (14). The rear end is connected with the outdoor vertical pipe (20) , the bottom of the outdoor vertical pipe (20) is provided with a covered oil discharge hole (19), the outdoor vertical pipe (20) is connected to the centrifugal fan (21), and the rear end of the centrifugal fan (21) is equipped with activated carbon adsorption device (23).

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