Catering lampblack waste gas treatment device

Abstract

The invention provides a catering lampblack waste gas treatment device, which belongs to the technical field of lampblack waste gas purification and comprises a frame, a shell, an oil collecting tank, an oil absorbing and squeezing area, an alkali washing area, an adsorption reaction area, a photocatalytic reaction area, a water removal area, an absorbing and drying area and an exhaust fan. The topmost part of the frame is of a conical structure, the lower part of the conical structure of the frame is of a cuboid structure, the shell is arranged outside the frame, the interior of the frame is sequentially provided with an oil collecting tank, an oil absorbing and squeezing area, an alkali washing area, an adsorption reaction area, a photocatalytic reaction area, a water removal area and an absorption drying area from bottom to top, and the exhaust fan is arranged at the topmost part of the frame. The device is simple in structure and convenient to operate; the grease can be recovered; the cooking fume waste gas treatment efficiency is high; waste gas is thoroughly purified, and the emission requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of cooking fume waste gas purification, and in particular to a restaurant cooking fume waste gas treatment device. Background Art

[0002] Restaurant fume refers to the mixture of volatile oil, organic matter, thermal oxidation and thermal cracking produced during the cooking process. It is a mixture of gas, liquid and solid. The fume exhaust contains a large amount of toxic and harmful substances. The fume erosion not only affects the kitchen environment, pollutes kitchen equipment, and destroys the dining environment of customers, but may even cause gene mutations. The impact of restaurant fume on the atmospheric environment and human health has attracted close attention from all walks of life.

[0003] Generally, range hoods are used to treat kitchen fumes, but range hoods are mostly used in home kitchens. Conventional range hoods are not suitable for treating fumes in medium and large kitchens such as school cafeteria kitchens, restaurant kitchens, and hotel kitchens. Therefore, fume purifiers for medium and large kitchens have emerged. However, existing fume purifiers generally only use a single purification method to purify the fume exhaust gas, with low purification efficiency, and the noise generated by the fume gas purification is loud, causing noise pollution. Therefore, there is an urgent need for a device to treat restaurant fumes, which can reduce carbon emissions and save resources while reducing pollution and meeting emission requirements.

[0004] Chinese patent (202210639809.3) discloses a mechanical electrostatic photolysis composite seven-in-one oil fume purifier, including a fuselage, an oil baffle, two sets of oil-spinning mechanisms, two sets of fresh air supply devices and two sets of oil fume purification devices. The oil fume purification device includes a silencer, and two high-density oil removal and adsorption devices are symmetrically arranged inside the silencer. A high-power UV photolysis lamp is arranged inside the high-power UV photolysis lamp, and a high-voltage electrostatic ion generator is arranged inside the high-voltage electrostatic ion generator. A deodorizing and silencing device is arranged, and a centrifugal fan is arranged between the two deodorizing and silencing devices. By setting an oil baffle, an oil-spinning mechanism and an oil fume purification device, a variety of purification methods are adopted to purify the oil fume exhaust gas, with high purification efficiency, so as to achieve the purpose of purifying the oil fume exhaust gas. At the same time, a fresh air supply device is arranged, which is conducive to air circulation and reduces the indoor temperature. However, the patent has a complex structure and high manufacturing cost. Summary of the invention

[0005] The purpose of the present invention is to provide a restaurant oil fume waste gas treatment device with a simple structure and convenient operation; oil can be recycled; the restaurant oil fume waste gas treatment efficiency is high; the waste gas is thoroughly purified and meets the emission requirements.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A restaurant oil fume waste gas treatment device is characterized by comprising a frame, a shell, an oil collecting tank, an oil absorption and squeezing area, an alkali washing area, an adsorption reaction area, a photocatalytic reaction area, a water removal area, an absorption and drying area and an exhaust fan.

[0008] The top of the frame is set as a conical structure, the bottom of the conical structure of the frame is set as a rectangular structure, the outer shell is set outside the frame, and the inside of the frame is sequentially provided with an oil collecting tank, an oil absorption and squeezing area, an alkaline washing area, an adsorption reaction area, a photocatalytic reaction area, a water removal area and an absorption and drying area from bottom to top, and the exhaust fan is set at the top of the frame.

[0009] Furthermore, the oil collecting tank comprises an oil drain port and an air inlet, the oil drain port is arranged on the bottom side wall of the oil collecting tank, and the air inlet is arranged on the upper side wall of the oil collecting tank.

[0010] Furthermore, the oil absorption and squeezing area includes a supporting metal mesh, oil absorption cotton, an X-shaped squeezing plate, an squeezing weight, a steel wire rope, a fixed pulley, a fixed bracket and a motor.

[0011] The supporting metal mesh is arranged at the bottom of the oil absorption and squeezing area, the oil-absorbing cotton is filled on the top of the supporting metal mesh, the X-shaped extrusion plate includes two metal plates and a hinge, the two metal plates are combined together by the hinge, the X-shaped extrusion plate is arranged above the oil-absorbing cotton, the extrusion weight is arranged above the X-shaped extrusion plate, the extrusion weight is connected to the X-shaped extrusion plate through a thin steel wire, the steel wire rope is arranged above the extrusion weight, the fixed pulley is arranged above the steel wire rope, the fixed bracket is arranged above the fixed pulley, the fixed pulley is arranged on the fixed bracket, the fixed bracket is fixed on the side wall of the frame, the motor is arranged on the side wall outside the shell, and the switch of the motor is linked to the main switch of the device.

[0012] One end of the steel wire rope is fixed on the extrusion weight, and the other end of the steel wire rope is passed around the fixed pulley and wound around the rotating shaft of the motor.

[0013] Furthermore, the alkali washing area includes an alkali liquid sprayer, an alkali liquid gathering tank, and an alkali liquid gathering protrusion. The alkali liquid sprayer is arranged at the upper part of the alkali washing area, the alkali liquid gathering tank is arranged at the lower part of the alkali washing area, and the alkali liquid gathering protrusion is arranged above the alkali liquid gathering tank.

[0014] Furthermore, the adsorption reaction zone includes a supporting metal plate and aluminum particles, the supporting metal plate is horizontally arranged inside the adsorption reaction zone, a plurality of air holes are provided on the supporting metal plate, aluminum particles are deposited on the supporting metal plate, and the diameter of the plurality of air holes is smaller than the diameter of the aluminum particles.

[0015] Furthermore, the photocatalytic reaction zone is provided with a controller, a ballast, an ultraviolet lamp tube and an aluminum-based TiO2 mesh, the aluminum-based TiO 2 The net sleeve is arranged on the outside of the ultraviolet lamp tube.

[0016] Furthermore, a baffle plate demister or a vortex plate demister is provided inside the dewatering zone.

[0017] Furthermore, activated carbon is arranged inside the absorption and drying zone.

[0018] Furthermore, the fixing bracket is a cross-shaped fixing bracket.

[0019] Furthermore, the frame is made of stainless steel, and the shell is made of stainless steel plate.

[0020] Advantages of the present invention:

[0021] 1. The oil-absorbing cotton prepared by the present invention has high resilience, high porosity, super hydrophobic and super oleophilic properties.

[0022] 2. Adsorb, squeeze and recycle the oil in restaurant fume exhaust gas to make biodiesel, turning waste into treasure.

[0023] 3. Alkaline washing, adsorption and photo-oxidation are used to purify the waste gas from restaurant fume, and pollutants are removed thoroughly with high efficiency.

[0024] 4. The present invention has a simple structure, low manufacturing cost, convenient operation, low running cost, low carbon and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] In the figure: 1, oil collecting tank, 101, oil drain port, 102, air inlet;

[0027] 2. Oil absorption and squeezing area, 201. Supporting metal mesh, 202. Oil absorbing cotton, 203. X-shaped squeezing plate, 204. Squeezing weight, 205. Steel wire rope, 206. Fixed pulley, 207. Fixed bracket, 208. Motor;

[0028] 3. Alkali washing area, 301. Alkali solution sprayer, 302. Alkali solution gathering tank, 303. Alkali solution gathering protrusion;

[0029] 4. Adsorption reaction zone, 401, aluminum particles;

[0030] 5. Photocatalytic reaction area;

[0031] 6. Dewatering area;

[0032] 7. Absorption and drying area;

[0033] 8. Exhaust fan. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0035] like Figure 1 As shown, a restaurant oil fume waste gas treatment device includes a frame, a shell, an oil collecting tank 1, an oil absorption and squeezing area 2, an alkali washing area 3, an adsorption reaction area 4, a photocatalytic reaction area 5, a water removal area 6, an absorption and drying area 7 and an exhaust fan 8. The device is hung on the wall.

[0036] The top of the frame is set as a conical structure, the bottom of the conical structure of the frame is set as a rectangular structure, the outer shell is set outside the frame, and the inside of the frame is sequentially provided with an oil collecting tank 1, an oil absorption and squeezing area 2, an alkaline washing area 3, an adsorption reaction area 4, a photocatalytic reaction area 5, a water removal area 6 and an absorption and drying area 7 from bottom to top, and the exhaust fan 8 is set at the top of the frame.

[0037] As a preferred embodiment of the present invention, the oil collecting tank 1 receives the oil flowing down from the upper part. The oil collecting tank 1 comprises an oil discharge port 101 and an air inlet 102. The oil discharge port 101 is arranged on the bottom side wall of the oil collecting tank 1, and the air inlet 102 is arranged on the upper side wall of the oil collecting tank 1.

[0038] As a preferred embodiment of the present invention, the oil absorption and squeezing area 2 includes a supporting metal mesh 201, oil absorbing cotton 202, an X-shaped squeezing plate 203, an squeezing weight 204, a steel wire rope 205, a fixed pulley 206, a fixed bracket 207 and a motor 208.

[0039] The supporting metal mesh 201 is arranged at the bottom of the oil absorption and squeezing area 2, the oil-absorbing cotton 202 is filled on the top of the supporting metal mesh 201, the X-shaped extrusion plate 203 includes two metal plates and a hinge, the two metal plates are combined together by the hinge, the X-shaped extrusion plate 203 is arranged above the oil-absorbing cotton 202, the extrusion weight 204 is arranged above the X-shaped extrusion plate 203, the extrusion weight 204 is connected to the X-shaped extrusion plate 203 through a thin steel wire, the steel wire rope 205 is arranged above the extrusion weight 204, the fixed pulley 206 is arranged above the steel wire rope 205, the fixed bracket 207 is arranged above the fixed pulley 206, the fixed pulley 206 is arranged on the fixed bracket 207, the fixed bracket 207 is fixed on the side wall of the frame, the motor 208 is arranged on the side wall outside the shell, and the switch of the motor 208 is linked to the main switch of the device.

[0040] One end of the steel wire rope 205 is fixed on the extrusion weight 204 , and the other end of the steel wire rope 205 passes around the fixed pulley 206 and is wound around the rotating shaft of the motor 208 .

[0041] The rotation of the motor 208 causes the steel wire rope 205 to be retracted and released, driving the extrusion weight 204 to rise and fall. The extrusion weight 204 descends and squeezes the X-shaped extrusion plate 203, so that the two metal plates are laid flat, squeezing the lower oil-absorbing cotton 202, and the oil absorbed by the oil-absorbing cotton 202 is squeezed out and flows into the lower oil collecting tank 1.

[0042] As a preferred embodiment of the present invention, the alkali washing area 3 includes an alkali liquid sprayer 301, an alkali liquid gathering tank 302, and an alkali liquid gathering protrusion 303. The alkali liquid sprayer 301 is arranged at the upper part of the alkali washing area 3, the alkali liquid gathering tank 302 is arranged at the lower part of the alkali washing area 3, and the alkali liquid gathering protrusion 303 is arranged above the alkali liquid gathering tank 302. The alkali liquid gathering protrusion 303 makes the alkali liquid flowing down from the upper part gather to the alkali liquid gathering tank 302. The alkali liquid is a sodium hydroxide solution.

[0043] As a preferred embodiment of the present invention, the adsorption reaction zone 4 includes a supporting metal plate and aluminum particles 401, the supporting metal plate is horizontally arranged inside the adsorption reaction zone 4, a plurality of air holes are provided on the supporting metal plate, aluminum particles 401 are deposited on the supporting metal plate, and the diameter of the plurality of air holes is smaller than the diameter of the aluminum particles 401. After the oil fume exhaust gas containing alkali liquid droplets enters the adsorption reaction zone 4, the alkali liquid droplets dissolve the aluminum particles 401 to generate aluminum hydroxide, which chemically reacts with the pollutants in the oil fume exhaust gas.

[0044] As a preferred embodiment of the present invention, the photocatalytic reaction zone 5 is provided with a controller, a ballast, an ultraviolet lamp and an aluminum-based TiO 2mesh, the aluminum-based TiO 2 The net sleeve is arranged on the outside of the ultraviolet lamp tube.

[0045] As a preferred embodiment of the present invention, a baffle demister or a vortex plate demister is provided inside the dewatering zone 6. The dewatering zone 6 collects large droplets in the gas and returns them to reduce the moisture in the gas; its working principle is that the gas enters the dewatering zone, passes through a series of bends, and is discharged from the top, while the water droplets, due to their mass and kinetic energy, fall straight down when passing through the bends, hit the surface of the components in the dewatering zone, and rebound under the action of gravity.

[0046] As a preferred embodiment of the present invention, activated carbon is arranged inside the absorption and drying area 7. The activated carbon is required to have the advantages of developed pores, large specific surface area, fast adsorption speed, anti-friction, and anti-washing. If the activated carbon becomes sticky after a long period of operation and the gas velocity decreases, the activated carbon needs to be replaced in time.

[0047] As a preferred embodiment of the present invention, the fixing bracket 207 is a cross-shaped fixing bracket.

[0048] As a preferred embodiment of the present invention, the frame is made of stainless steel, and the shell is made of stainless steel plate.

[0049] As a preferred embodiment of the present invention, the preparation process of the oil-absorbing sponge 202 is as follows:

[0050] 1) Dissolve hexamethylenetetramine in ethanol, add phenolic resin, mix well, and prepare a mixed solution.

[0051] 2) The polyurethane sponge is squeezed and placed in the mixed solution in step 1. After the polyurethane sponge absorbs the mixed solution and returns to its original shape, it is squeezed again at a certain ratio to discharge excess mixed solution.

[0052] 3) The polyurethane sponge after absorbing the mixed liquid is cured at a temperature of 90° C. for 120 minutes.

[0053] 4) The cured polyurethane sponge is squeezed again and placed in the mixed solution in step 1. After the polyurethane sponge absorbs the mixed solution and recovers to its original shape, it is squeezed again to a certain proportion to discharge the excess mixed solution. The curing is carried out at a temperature of 105° C. for 120 minutes.

[0054] 5) Repeat step 4 until the mixed liquid in step 1 is completely absorbed by the polyurethane sponge to prepare oil-absorbing cotton.

[0055] As a preferred embodiment of the present invention, in steps 1 to 5, the mass ratio of hexamethylenetetramine, phenolic resin and polyurethane sponge is 1:2:50.

[0056] The working principle and specific process of the present invention:

[0057] 1. Turn on the main power switch of the restaurant oil fume waste gas treatment device, the motor 208 starts, the rotating shaft of the motor is wound around the wire rope 205, the wire rope 205 drives the extrusion weight 204 to rise, the extrusion weight 204 pulls up the X-shaped extrusion plate 203, and the two metal plates that were originally laid flat are partially closed, so that an air channel is left between the X-shaped extrusion plate 203 and the side wall of the oil suction and squeezing area. After the extrusion weight 204 rises to the designed height, the motor 208 stops rotating and is in a standby state. At the same time, the exhaust fan 8 starts working, and the restaurant oil fume waste gas enters the upper part of the oil collecting tank 1 through the air inlet 102 under the exhaust action of the exhaust fan 8.

[0058] 2. The restaurant oil fume waste gas enters the oil absorption and squeezing area 2 through the supporting metal mesh 201, and the grease in the restaurant oil fume waste gas is absorbed by the oil absorption cotton 202.

[0059] 3. The restaurant fume exhaust gas rises to the alkali washing area 3, and the alkali solution is sprayed from the alkali solution sprayer 301 to form countless fine droplets, which are fully mixed with the restaurant fume exhaust gas, and a chemical reaction occurs after contact, and the pollutants in the restaurant fume exhaust gas are absorbed and adsorbed. Under the action of the alkali solution gathering protrusion 303, the alkali solution is gathered in the alkali solution gathering tank 302 for recycling.

[0060] 4. The oil fume waste gas containing alkali droplets enters the adsorption reaction zone 4. The alkali droplets dissolve the aluminum particles 401 to form aluminum hydroxide, which reacts chemically with the pollutants in the oil fume waste gas to generate new substances. The adsorption reaction zone 4 adsorbs and removes pollutants in the oil fume waste gas, and removes water molecules in the oil fume waste gas to reduce the humidity of the waste gas.

[0061] 5. The waste gas continues to rise and enters the photocatalytic reaction zone 5. The high-intensity, high-ozone ultraviolet lamp tube emits a high-energy ultraviolet light beam and ozone to irradiate the waste gas, synergistically decompose the waste gas, and the pollutants in the waste gas are further decomposed and oxidized.

[0062] 6. The gas enters the water removal zone 6, where the droplets in the gas are further intercepted.

[0063] 7. The gas continues to rise and enters the absorption and drying zone 7, where the substances and droplets contained in the gas are intercepted and adsorbed.

[0064] 8. Finally, the gas is discharged by the exhaust fan 8 to achieve standard emission.

[0065] 9. After finishing the kitchen operation, press the main power switch of the catering oil fume waste gas treatment device, the rotating shaft of the motor 208 rotates in the opposite direction, the wire rope 205 is released, the squeezing hammer 204 descends, and the X-shaped squeezing plate 203 is squeezed to make the two metal plates flat, and the oil-absorbing cotton 202 at the bottom is squeezed. The oil absorbed by the oil-absorbing cotton 202 is squeezed out and flows into the oil collecting tank 1 at the bottom. The grease in the oil collecting tank 1 is regularly discharged from the oil drain port 101, recycled and made into biodiesel, turning waste into treasure.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art can still adjust the technical solutions described in the above embodiments or replace some of the technical features by equivalents. Therefore, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A restaurant fume exhaust gas treatment device, characterized in that: It comprises a frame, a shell, an oil collecting tank (1), an oil absorption and squeezing area (2), an alkali washing area (3), an adsorption reaction area (4), a photocatalytic reaction area (5), a water removal area (6), an absorption and drying area (7) and an exhaust fan (8); The top of the frame is configured as a conical structure, the bottom of the conical structure of the frame is configured as a rectangular parallelepiped structure, the outer shell is configured outside the frame, and the inside of the frame is sequentially configured with an oil collecting tank (1), an oil absorption and squeezing area (2), an alkali washing area (3), an adsorption reaction area (4), a photocatalytic reaction area (5), a water removal area (6) and an absorption and drying area (7) from bottom to top, and the exhaust fan (8) is configured at the top of the frame.

2. A restaurant fume exhaust gas treatment device according to claim 1, characterized in that: The oil collecting tank (1) comprises an oil discharge port (101) and an air inlet (102); the oil discharge port (101) is arranged on a bottom side wall of the oil collecting tank (1), and the air inlet (102) is arranged on an upper side wall of the oil collecting tank (1).

3. A restaurant fume exhaust gas treatment device according to claim 2, characterized in that: The oil absorption and squeezing area (2) comprises a supporting metal mesh (201), oil absorption cotton (202), an X-shaped squeezing plate (203), a squeezing weight (204), a steel wire rope (205), a fixed pulley (206), a fixed bracket (207) and a motor (208); The supporting metal mesh (201) is arranged at the bottom of the oil absorption and squeezing area (2), the oil absorption cotton (202) is filled on the top of the supporting metal mesh (201), the X-shaped squeezing plate (203) comprises two metal plates and a hinge, the two metal plates are combined together by the hinge, the X-shaped squeezing plate (203) is arranged above the oil absorption cotton (202), the squeezing weight (204) is arranged above the X-shaped squeezing plate (203), and the squeezing weight (204) is connected to the X-shaped squeezing plate (203) by a thin steel wire. 203), the steel wire rope (205) is arranged above the extrusion weight (204), the fixed pulley (206) is arranged above the steel wire rope (205), the fixed bracket (207) is arranged above the fixed pulley (206), the fixed pulley (206) is arranged on the fixed bracket (207), the fixed bracket (207) is fixed on the side wall of the frame, the motor (208) is arranged on the side wall outside the shell, and the switch of the motor (208) is linked with the main switch of the device; One end of the steel wire rope (205) is fixed on the extrusion weight (204), and the other end of the steel wire rope (205) passes around the fixed pulley (206) and is wound around the rotating shaft of the motor (208).

4. A restaurant fume exhaust gas treatment device according to claim 3, characterized in that: The alkali washing zone (3) comprises an alkali liquid sprayer (301), an alkali liquid gathering tank (302), and an alkali liquid gathering protrusion (303); the alkali liquid sprayer (301) is arranged at the upper part of the alkali washing zone (3); the alkali liquid gathering tank (302) is arranged at the lower part of the alkali washing zone (3); and the alkali liquid gathering protrusion (303) is arranged above the alkali liquid gathering tank (302).

5. A restaurant fume exhaust gas treatment device according to claim 4, characterized in that: The adsorption reaction zone (4) comprises a supporting metal plate and aluminum particles (401), wherein the supporting metal plate is horizontally arranged inside the adsorption reaction zone (4), a plurality of air holes are provided on the supporting metal plate, and aluminum particles (401) are deposited on the supporting metal plate, wherein the diameter of the plurality of air holes is smaller than the diameter of the aluminum particles (401).

6. A restaurant fume exhaust gas treatment device according to claim 5, characterized in that: The photocatalytic reaction zone (5) is provided with a controller, a ballast, an ultraviolet light tube and an aluminum-based TiO2 net, and the aluminum-based TiO2 net is sleeved on the outside of the ultraviolet light tube.

7. A restaurant fume exhaust gas treatment device according to claim 6, characterized in that: A baffle plate demister or a vortex plate demister is arranged inside the dewatering zone (6).

8. The restaurant fume exhaust gas treatment device according to claim 7, characterized in that: Activated carbon is arranged inside the absorption and drying zone (7).

9. The restaurant fume exhaust gas treatment device according to claim 8, characterized in that: The fixing bracket (207) is a cross-shaped fixing bracket.

10. A restaurant fume exhaust gas treatment device according to claim 9, characterized in that: The frame is made of stainless steel, and the shell is made of stainless steel plate.

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