CN113457408B

CN113457408B - Efficient kitchen malodorous gas purifying system

Info

Publication number: CN113457408B
Application number: CN202110688776.7A
Authority: CN
Inventors: 蒋伟; 杨旭; 向延周; 王涛
Original assignee: Universtar Science and Technology Shenzhen Co Ltd
Current assignee: Universtar Science and Technology Shenzhen Co Ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2023-05-09
Anticipated expiration: 2041-06-21
Also published as: CN113457408A

Abstract

The application relates to the technical field of gas purification systems, in particular to a high-efficiency kitchen malodorous gas purification system, which comprises a first spray purification device, a second spray purification device, a biological filter deodorizing device, a circulating liquid supply device, a UV photolysis tank, a fan and a controller, wherein the air inlet end of the second spray purification device is communicated with the air outlet end of the first spray purification device; the first spraying purification device, the biological filter deodorization device, the circulating liquid supply device and the UV photolysis tank are electrically connected with the controller. The method can be used for deodorizing the kitchen malodorous gas more efficiently and has higher purification rate.

Description

Efficient kitchen malodorous gas purifying system

Technical Field

The application relates to the technical field of gas purification systems, in particular to an efficient kitchen malodorous gas purification system.

Background

At present, kitchen waste can be rapidly degraded by microorganisms in the processes of collection, transportation and treatment, and a large amount of malodorous substances are generated. In the treatment process of the kitchen waste, most malodorous substances are volatile organic matters besides inorganic matters such as ammonia, hydrogen sulfide and the like. These malodorous substances have a strong stimulating effect on human senses, and harm the health of workers engaged in garbage collection and treatment and residents nearby a treatment plant.

In the related art, the deodorizing process for treating the kitchen malodorous gas mainly comprises processes of washing and absorbing, active carbon adsorption, advanced oxidation, chemical oxidation, thermal oxidation and the like, but has the defects of high efficiency and purification rate of deodorization.

Therefore, there is a need for an efficient kitchen malodor gas purification system to ameliorate the above problems.

Disclosure of Invention

In order to enable the deodorization of the kitchen malodorous gas to be more efficient and the purification rate to be higher, the application provides a high-efficiency kitchen malodorous gas purification system.

The application provides an efficient kitchen malodorous gas clean system adopts following technical scheme:

the high-efficiency kitchen malodorous gas purification system comprises a first spray purification device, a second spray purification device, a biological filter deodorizing device, a circulating liquid supply device, a UV photolysis tank, a fan and a controller, wherein the air inlet end of the second spray purification device is communicated with the air outlet end of the first spray purification device, the biological filter deodorizing device is communicated with the air outlet end of the second spray purification device, the circulating liquid supply device is connected with the biological filter deodorizing device, the UV photolysis tank is communicated with the biological filter deodorizing device, the fan is communicated with the air outlet end of the UV photolysis tank, and the controller is electrically connected with the fan;

the first spraying purification device, the biological filter deodorization device, the circulating liquid supply device and the UV photolysis tank are electrically connected with the controller.

Through adopting above-mentioned technical scheme, after the fan starts, the negative pressure energy that produces makes the foul gas pass through whole clean system, in this in-process, first spray purifier can absorb the part alkaline substance in the foul gas and reduce dust content, second spray purifier can absorb the part acidic substance in the foul gas and reduce dust content, microorganism in the biological filter deodorizing device can be with the foul smell degradation in the biological filter deodorizing device harmless compound, such as water, carbon dioxide and organic acid etc. to make the pollutant get rid of, the UV photolysis case utilizes the shortwave ultraviolet ray between 200 nm to 280 nm to carry out the deodorization of organic waste gas, can also reduce the production of secondary pollutant ozone, improve the purification rate, and the operation of whole system is controlled by the controller, and is labour saving and time saving, convenient operation, more high efficiency.

Optionally, the first spray purification device includes the first spray column that inlet end and odor source are linked together through exhaust duct, establishes at the first liquid reserve tank of first spray column bottom, with the first water pump of first liquid reserve tank flowing back end intercommunication, with the parallelly connected second water pump of first liquid reserve tank flowing back end intercommunication and with first water pump, establish the first packing layer and establish the first defroster at first spray column top in first spray column.

Through adopting above-mentioned technical scheme, the absorption liquid is equipped with in the first liquid reserve tank of first spray column bottom, and the absorption liquid is taken out under the effect of first water pump or second water pump and is carried to the top of first spray column and spray, and the absorption liquid will follow the sour material in the foul gas that passes through in the first spray column to get rid of partial dust, then most water smoke that produces is got rid of by the mist eliminator interception back, carries to second spray purifier. Moreover, the arrangement of the double water pumps is one for one, and even if one water pump fails, the normal use of the whole purification system is not affected.

Optionally, the second spray purification device comprises a second spray tower, a second liquid storage tank, a third water pump, a fourth water pump, a second packing layer and a second demister, wherein the air inlet end of the second spray tower is communicated with the odor source through an exhaust pipeline, the second liquid storage tank is arranged at the bottom of the second spray tower, the third water pump is communicated with the liquid discharge end of the second liquid storage tank, the fourth water pump is communicated with the liquid discharge end of the second liquid storage tank and is connected with the third water pump in parallel, the second packing layer is arranged in the second spray tower, and the second demister is arranged at the top of the second spray tower. Moreover, the arrangement of the double water pumps is one for one, and even if one water pump fails, the normal use of the whole purification system is not affected.

Through adopting above-mentioned technical scheme, the second liquid reserve tank of second spray column bottom is equipped with the absorption liquid, and the absorption liquid is carried to the top of second spray column under the effect of third water pump or fourth water pump extraction and is sprayed, and the absorption liquid will follow the sour material in the foul gas that passes through in the second spray column to get rid of partial dust, then after the most mist that produces was intercepted by the second defroster and got rid of, the gas reentry subsequent purification process.

Optionally, the biological filter deodorizing device comprises a biological filter body, a first control valve, a second control valve, a third control valve, a biological filler layer, a spray assembly, a temperature sensor and a heater, wherein the air inlet end of the biological filter body is communicated with the second spray purifying device;

the temperature sensor and the heater are electrically connected with the controller

And the exhaust end of the second control valve and the exhaust end of the third control valve are communicated with the air inlet end of the UV photolysis tank.

Through adopting above-mentioned technical scheme, first control valve is opened, and the second control valve is closed, and after the foul gas got into the biological filter body from the bottom, from bottom to top moved, when the foul smell was through biological filler layer, the microorganism that adheres to in the biological filler layer was metabolized and is degraded into harmless compound, for example carbon dioxide, water and organic acid etc. to make most foul gas pollutants get rid of. When the biological filter body is overhauled or the concentration of malodorous gas is low and degradation is not needed in a biodegradation mode, the first control valve and the third control valve can be closed, so that the malodorous gas directly enters the UV photolysis tank through the exhaust pipeline. Under the lower service environment of temperature in winter, when temperature sensor detects that the internal temperature of biological filter is lower, can be with the data transmission that detects to the controller to by the heating of controller control heater, guarantee that the gas temperature that gets into biological deodorization section is fit for the growth and the reproduction of deodorization microorganism, make deodorant effect better.

Optionally, the biological filler layer is volcanic rock and bamboo charcoal combined filler.

By adopting the technical scheme, the volcanic rock and bamboo charcoal combined filler has the advantages of large surface area, acid and alkali corrosion resistance, suitability for microorganism growth, good water retention, difficult decay, easy film formation and the like, so that excessive microorganisms are adsorbed in the filler layer as much as possible, the effective residence time of contact between gas and the biological filler layer is prolonged, and the deodorizing effect is better.

Optionally, a guide pipe group is arranged at the bottom of the biological filter body along the horizontal direction, and through holes for passing gas are uniformly distributed on the guide pipe group;

the aperture of the through hole is larger than the pipe diameter of the guide pipe group.

Through adopting above-mentioned technical scheme, the honeycomb duct can shunt the foul smell, makes the foul smell get into biological filler district after the reposition of redundant personnel, makes foul smell and biological filler layer more fully contact, improves deodorant effect.

Optionally, an air flow rate sensor for detecting the air flow rate in the biological filter body is vertically inserted on the inner wall of the biological filter body;

the air flow rate sensor is electrically connected with the controller.

Through adopting above-mentioned technical scheme, air flow rate sensor can detect the velocity of flow of the gaseous in the biological filter body to with data transmission to the controller, when the too big deodorizing effect that can influence of gaseous velocity of flow, the controller can send control signal to the fan, makes fan rotational speed reduce, thereby makes gaseous velocity of flow reduce, in order to reduce the influence that gaseous velocity of flow produced deodorizing effect.

Optionally, the gas flow rate in the body of the biofilter is less than or equal to 0.08 meters per second.

By adopting the technical scheme, the gas flow rate in the biological filter body is not too large, the gas flow rate is controlled to be 0.08 m/s, the contact time of the odor and the biological filler layer is longer, and the deodorization condition that the contact time of the odor and the biological filler layer is not less than 20 seconds is better under the general condition.

Optionally, the biological filter deodorizing device further comprises a gas detector arranged at the air inlet end of the first control valve;

the gas detector is electrically connected with the controller.

Through adopting above-mentioned technical scheme, gas detector can detect the gas concentration that is about to get into the foul gas in the biological filter deodorizing device, and when gas concentration was lower, gas detector was data transmission to the controller to send control signal by the controller, biological filter deodorizing device and circulation liquid supply device stop operation, so not only can make the purification efficiency of whole clean system higher, can also play the effect of energy saving.

Optionally, the circulating liquid supply device comprises a circulating water tank, a fifth water pump and a sixth water pump, wherein one liquid inlet end of the circulating water tank is communicated with the liquid outlet end of the biological filter body, the liquid inlet end of the fifth water pump is communicated with the liquid outlet end of the circulating water tank, and the liquid inlet end of the sixth water pump is communicated with the liquid outlet end of the circulating water tank and is connected with the fifth water pump in parallel;

the liquid discharge ends of the fifth water pump and the sixth water pump are communicated with the liquid inlet end of the spraying assembly.

By adopting the technical scheme, the water in the circulating water tank is pumped and conveyed to the spraying assembly at the top of the biological filter body under the action of the fifth water pump or the sixth water pump. Then the sprayed water and the water generated by biodegradation gather at the bottom of the biological filter body under the action of gravity and flow back to the circulating water tank.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the fan in the application is started, the generated negative pressure effect can enable malodorous gas to pass through the whole purification system, in the process, the first spraying purification device can absorb part of alkaline substances in the malodorous gas and reduce dust content, the second spraying purification device can absorb part of acidic substances in the malodorous gas and reduce dust content, microorganisms in the biological filter deodorization device can degrade the malodorous gas passing through the biological filter deodorization device into harmless compounds such as water, carbon dioxide and organic acid, so that pollutants are removed, the UV photolysis tank utilizes short wave ultraviolet rays between 200 nanometers and 280 nanometers to deodorize organic waste gas, the generation of secondary pollutant ozone can be reduced, the operation of the whole system is controlled by a controller, and the system is time-saving and labor-saving, convenient to operate and improves the purification efficiency;

2. the honeycomb duct in this application can shunt the foul smell, makes the foul smell get into biological filler district after the reposition of redundant personnel, makes foul smell and biological filler layer more fully contact, improves deodorant effect.

Drawings

Fig. 1 is an overall connection schematic diagram of a high-efficiency kitchen malodorous gas purification system disclosed in an embodiment of the present application.

Fig. 2 is a partial enlarged view of a portion a in fig. 1.

Fig. 3 is a partial enlarged view of a portion B in fig. 1.

Fig. 4 is a schematic diagram of a controller in an embodiment of the present application.

Reference numerals illustrate:

100. a high concentration source of odor; 200. a chimney; 300. a pickling solution replenishment source; 400. an alkaline wash replenishment source; 500. a process water source;

1. a first spray purification device; 11. a first spray tower; 12. a first reservoir; 13. a first water pump; 14. a second water pump; 15. a first filler layer; 16. a first mist eliminator;

2. a second spray purification device; 21. a second spray tower; 22. a second liquid storage tank; 23. a third water pump; 24. a fourth water pump; 25. a second filler layer; 26. a second demister;

3. a biological filter deodorization device; 31. a biological filter body; 311. a guide tube group; 312. an air flow rate sensor; 32. a first control valve; 33. a second control valve; 34. a third control valve; 35. a bio-filler layer; 36. a spray assembly; 37. a temperature sensor; 38. a heater; 39. a gas detector;

4. a circulating liquid supply device; 41. a circulation water tank; 42. a fifth water pump; 43. sixth water pump

5. A UV photolysis tank;

6. a blower;

7. and a controller.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses efficient kitchen malodorous gas clean system, refer to fig. 1, and it includes first spray purification device 1, second spray purification device 2, biological filter deodorizing device 3, circulation feed liquid device 4, UV photolysis case 5, fan 6 and controller 7. When the purification system is used for purification operation, under the action of the fan 6, the malodorous gas generated or collected by the high-concentration malodorous gas source 100 firstly enters the first spraying purification device 1 through the exhaust pipeline, then sequentially passes through multiple deodorization steps of the second spraying purification device 2, the biological filter deodorization device 3 and the UV photolysis tank 5, and finally is discharged from the chimney 200, so that the purification effect of the malodorous gas is better. In this process, the absorption liquid used in the first spray cleaning device 1 is acid wash liquid, which is supplemented by the acid wash liquid supplementing source 300, the absorption liquid used in the second spray cleaning device 2 is alkaline wash liquid, which is supplemented by the alkaline wash liquid supplementing source 400, and the process water used in the circulating liquid supply device 4, which is supplemented by the process water source 500.

Wherein, the inlet end that first spray purification device 1 can adopt exhaust duct to be linked together with high concentration odor source 100, the inlet end that second spray purification device 2 was linked together with the exhaust end that first spray purification device 1, high concentration odor is carried out preliminary purification via first spray purification device 1 and is reentered in second spray purification device 2 and purify, the inlet end that biological filter deodorizing device 3 was linked together with the exhaust end that second spray purification device 2, circulation feed liquid device 4 and biological filter deodorizing device 3 are linked together through two drain pipes, form circulation feed liquid passageway. The air inlet end of the UV photolysis tank 5 is communicated with the air outlet end of the biological filter deodorization device 3, the air inlet end of the fan 6 is communicated with the air outlet end of the UV photolysis tank 5, purified gas is finally sent to the chimney 200 to be discharged through an air outlet pipeline, and the controller 7 is electrically connected with the first spray purification device 1, the biological filter deodorization device 3, the circulating liquid supply device 4, the UV photolysis tank 5 and the fan 6 respectively and used for controlling the normal operation of the whole purification system. In the whole purification system, the drainage pipeline can be made of PVC pipes, and the exhaust pipeline can be made of glass fiber reinforced plastic FRP materials.

Specifically, referring to fig. 1, the first spray purification apparatus 1 includes a first spray tower 11, a first liquid storage tank 12, a first water pump 13, a second water pump 14, a first packing layer 15, and a first mist eliminator 16. The first spray tower 11 is an acid washing tower, a plurality of nozzles are arranged at the top in the first spray tower 11 along the horizontal direction and are used for uniformly spraying the absorption liquid downwards, the first liquid storage tank 12 is positioned at the bottom of the first spray tower 11 and is integrally formed with the first spray tower 11, the absorption liquid is stored in the first liquid storage tank 12, and the absorption liquid is generally a sulfuric acid solution with 20%. The first water pump 13 is respectively communicated with the first liquid storage tank 12 and the nozzle at the top of the first spray tower 11 through a drainage pipeline, and the nozzle can adopt a 120-degree hollow cone nozzle, so that gas and absorption liquid can be in more sufficient contact, and sulfuric acid solution is pumped from the first liquid storage tank 12 to the top of the first spray tower 11 for spraying. The second water pump 14 is also communicated with the first liquid storage tank 12 and the nozzle at the top of the first spray tower 11 respectively through the drainage pipeline and is connected in parallel with the first water pump 13, when one water pump is damaged, the other water pump can be started, the condition that the whole purification system cannot be used due to overhauling is avoided, and the deodorizing is more efficient. Moreover, the first water pump 13 and the second water pump 14 are electrically connected with the controller 7, and the operation is convenient.

The first packing layer 15 can adopt pall rings to carry out packing, and in general, the first packing layer 15 is arranged in a double-layer structure, so that the residence time of waste gas can be prolonged, odor and absorption liquid can be fully contacted and decomposed, and the deodorizing effect is better. The first mist eliminator 16 is mounted on top of the first spray tower 11 for removal of water mist, and in a possible embodiment of the present application, the first mist eliminator 16 may employ a baffle mist eliminator for better deodorizing effect.

Referring to fig. 1, the second spray purification apparatus 2 includes a second spray tower 21, a second liquid storage tank 22, a third water pump 23, a fourth water pump 24, a second packing layer 25, and a second mist eliminator 26. The second spray tower 21 is an alkaline washing tower, the air inlet end of the second spray tower 21 is communicated with the air outlet end of the first spray tower 11 through an air outlet pipeline, a plurality of nozzles are also arranged at the top in the second spray tower 21, and the nozzles can be 120-degree hollow cone nozzles. The second liquid storage tank 22 is used for storing 20% sodium hydroxide solution, and two ends of the third water pump 23 are respectively communicated with the second liquid storage tank 22 and a nozzle at the top of the second spray tower 21 through drainage pipelines so as to pump sulfuric acid solution from the second liquid storage tank 22 to the top of the second spray tower 21 for spraying. The fourth water pump 24 is also communicated with the nozzles at the tops of the second liquid storage tank 22 and the second spray tower 21 respectively through a drainage pipeline and is connected in parallel with the third water pump 23, when one water pump is damaged, the other water pump can be started, the condition that the whole purification system cannot be used due to overhauling is avoided, and the deodorizing is more efficient. Moreover, the third water pump 23 and the fourth water pump 24 are electrically connected with the controller 7, so that the operation is more convenient.

The second packing layer 25 may adopt pall rings to perform packing, and in general, the second packing layer 25 is arranged in a double-layer structure, so that the residence time of the exhaust gas can be increased, and the odor and the absorption liquid are fully contacted and absorbed, so that the deodorizing effect is better. The second mist eliminator 26 is installed at the top of the second spray tower 21 for removing water mist, and in a possible embodiment of the present application, the second mist eliminator 26 may employ a baffle mist eliminator, so that the deodorizing effect is better.

Referring to fig. 1 and 2, the biofilter deodorizing apparatus 3 includes a biofilter body 31, a first control valve 32, a second control valve 33, a third control valve 34, a bio-filler layer 35, a spray assembly 36, a temperature sensor 37, and a heater 38.

Wherein, the biological filter body 31 can adopt the sealed box of rectangle structure, and its exhaust end is located on the top surface on the bottom side of the air inlet end of biological filter body 31, and the air inlet end of biological filter body 31 passes through exhaust duct and is connected with the exhaust end of second spray column 21, and first control valve 32 is installed on the exhaust duct of biological filter body 31 entrance. The air inlet end of the second control valve 33 is communicated with the air outlet end of the second spray tower 21, the second control valve 33 is in parallel connection with the first control valve 32, and the air outlet end of the second control valve 33 is communicated with the air inlet end of the UV photolysis tank 5 through an air outlet pipeline. The third control valve 34 is installed on an exhaust pipe at an exhaust end of the biofilter body 31, and the exhaust end of the third control valve 34 is connected with an intake end of the UV photolysis tank 5 and is connected in parallel with the first control valve 32. The first control valve 32, the second control valve 33 and the third control valve 34 are all electrically connected with the controller 7, when the biological filter body 31 is overhauled or the biological filter body 31 is not needed, the controller 7 can send a control signal to enable the first control valve 32 and the third control valve 34 to be closed, and meanwhile the second control valve 33 is opened, so that gas can directly flow into the UV photolysis tank 5.

For the bio-filler layer 35, in a possible embodiment of the present application, the intermediate portion in the bio-filter body 31 is filled with a combined filler of volcanic rock and bamboo charcoal, and the bio-filler layer 35 can provide a larger living attachment space for microorganisms. The spray assembly 36 consists of a liquid inlet pipe with one end communicated with the circulating liquid supply device 4 through a drainage pipeline and spray heads uniformly distributed on the liquid inlet pipe, and the spray assembly 36 is used for uniformly spraying the process water on the biological filler layer 35 and slowly penetrating.

Referring to fig. 1 and 3, a temperature sensor 37 is installed on the inner side of the biological filter body 31 near the biological filler layer 35, the temperature sensor 37 is used for detecting the temperature in the biological filter body 31, the heater 38 can use electric heating wires, the temperature in the biological filter body 31 can be raised after the heater 38 is electrified, when the temperature sensor 37 detects that the temperature in the biological filter body 31 is lower, data can be transmitted to the controller 7 electrically connected with the temperature sensor 37, then a control signal is sent to the heater 38 electrically connected with the controller 7 by the controller 7, so that the heater 38 works, the temperature in the biological filter body 31 is raised, heat balance is maintained, and the temperature of gas entering the biological filler layer 25 is suitable for growth and propagation of microorganisms.

Further, in order to make the odor more uniformly blow to the bio-filler layer 35, the deodorizing effect is better. A guide pipe group 311 is installed at the bottom of the biological filter body 31 along the horizontal direction, the guide pipe group 311 is composed of a main guide pipe with an air inlet end connected with the air inlet end of the biological filter body 31 and a plurality of sub guide pipes vertically connected with the main guide pipe, wherein through holes for the gas to pass through are uniformly distributed on the main guide pipe and the sub guide pipes, the aperture of the through holes is larger than the diameters of the main guide pipe and the sub guide pipe in the guide pipe group 311, and the flow rate of the gas when the gas enters the biological filter body 31 can be reduced according to the Venturi effect. In a possible embodiment of the present application, the flow rate of the gas in the biofilter body 31 is generally controlled to be less than 0.08 m, and the time for the gas to pass through the bio-filler layer 35 is greater than or equal to 20 seconds.

Further, in order to make the deodorization of the biological filter deodorizing device 3 more efficient, an air flow rate sensor 312 is vertically inserted on the inner wall of the biological filter body 31, and the air flow rate sensor 312 is electrically connected to the controller 7. The air flow rate sensor 312 can be a low flow rate gas mass flow sensor so as to monitor the air flow rate, when the gas flow rate is greater than 0.08 m/s, the controller 7 sends a control model to the fan 6 after receiving a signal, so that the rotating speed of the fan 6 is reduced, and the gas flow rate in the biological filter body 31 is always reduced, thereby avoiding the influence on the deodorizing effect due to the too high gas flow rate.

In addition, in order to make the whole purification system more energy-saving, the development direction of energy saving and low carbon tends to be realized. Referring to fig. 2, the biological filter deodorizing device 3 further includes a gas detector 39 disposed at the air inlet end of the first control valve 32, where the gas detector 39 may be a gas concentration VOCs gas concentration detector for detecting the concentration of odor, and the gas detector 39 is electrically connected to the controller 7. When the gas detector 39 detects that the gas concentration is low, the controller 7 can open the first control valve 32 and the third control valve 34 and then open the second control valve 33 to enable the gas to directly enter the UV photolysis tank 5 from the exhaust end of the second spray tower 21 through the exhaust pipeline without using the biological filter deodorization device 3 and the circulating liquid supply device 4.

Referring to fig. 1, the circulation liquid supply device 4 includes a circulation water tank 41, a fifth water pump 42, and a sixth water pump 43. The circulating water tank 41 may be made of a sealed tank body, and a liquid inlet end of the circulating water tank 41 is communicated with a liquid outlet end at the bottom of the biological filter body 31 through a drainage pipeline. The circulating water tank 41 is arranged below the biological filter body 31, so that water accumulated at the bottom of the biological filter body 31 flows back into the circulating water tank 41 through a drainage pipeline under the action of gravity, the liquid discharge end of the circulating water tank 41 is communicated with the fifth water pump 42 through the drainage pipeline, the liquid discharge end of the fifth water pump 42 is communicated with the spray assembly 36, the liquid inlet end of the sixth water pump 43 is communicated with the liquid discharge end of the circulating water tank 41 through the drainage pipeline, the other end of the sixth water pump 43 is communicated with the spray assembly 36 through the drainage pipeline, and the sixth water pump 43 and the fifth water pump 42 are in parallel connection. The fifth water pump 42 and the sixth water pump 43 are in telecommunication connection with the controller 7, the two water pumps are one by one, and when one water pump is damaged and needs to be overhauled, the other water pump can continue to work, so that the operation of the whole purification system is not influenced.

The air inlet end of the UV photolysis tank 5 is communicated with the air outlet ends of the biological filter body 31 and the second spray tower 21 through an air outlet pipeline. In this application possible embodiment, UV photolysis case 5 internally mounted has multiunit UV fluorescent tube to further get rid of the foul smell, improves purifying effect, and in this application embodiment, UV fluorescent tube can adopt the wavelength to be 200 nm to 280 nm ultraviolet lamp for make the pollutant schizolysis in the foul smell become harmless material, can also reduce the production of secondary pollutant ozone by a wide margin.

The fan 6 can adopt a Roots fan, the air inlet end of the fan 6 is communicated with the air outlet end of the UV photolysis tank 5 through an air outlet pipeline, and the air outlet end of the fan 6 can be communicated with the chimney 200 through the air outlet pipeline, so that the air treated by the UV photolysis tank 5 is discharged to the outside through the chimney 200.

Referring to fig. 1 and 4, the controller 7 may be a CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of the above-described programs. The controller 7 is mainly composed of a CPU71, a RAM72, a ROM73, a system bus 74, and the like, wherein the CPU71, the RAM72, and the ROM73 are all connected to the system bus 74.

The system bus 74 is provided with an I/O bus 75 including a plurality of control signal peripheral interfaces, and the first water pump 13, the second water pump 14, the third water pump 23, the fourth water pump 24, the fifth water pump 42, the sixth water pump 43, the first mist eliminator 16, the second mist eliminator 26, the first control valve 32, the second control valve 33, the third control valve 34, the UV photolysis tank 5, and the blower 6 are connected to the I/O bus 75 through control signal peripheral output interfaces, and the air flow rate sensor 312, the temperature sensor 37, and the gas detector 39 are connected to the I/O bus 75 through control signal peripheral input interfaces.

The implementation principle of the efficient kitchen malodorous gas purification system provided by the embodiment of the application is as follows:

when the whole system performs dust removal operation of high-concentration malodorous gas, firstly, the controller 7 sends control signals to the fan 6 and the UV photolysis tank 5 to enable the fan 6 and the UV photolysis tank to start working, an exhaust pipeline and a dust removal part in front of the fan 6 are in a negative pressure state, and odor sequentially passes through the pickling purification effect of the first spraying purification device 1, the alkaline cleaning purification effect of the second spraying purification device 2, the microbial degradation deodorization effect of the biological filter deodorization device 3 and the photolysis deodorization effect of the UV photolysis tank 5 and then is discharged from the exhaust pipeline to the chimney 200. The multiple deodorization process ensures better deodorization effect and higher deodorization efficiency.

When the odor concentration is reduced, the gas detector 39 can transmit the detected data to the controller 7, so that the controller 7 controls the first control valve 32 and the third control valve 34 to be closed, and the second control valve 33 is opened, so that the odor directly enters the UV photolysis tank 5 from the second spray purification device 2 through the exhaust pipeline for photolysis deodorization.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. An efficient kitchen malodorous gas clean system which characterized in that: the device comprises a first spray purification device (1), a second spray purification device (2) with an air inlet end communicated with an air outlet end of the first spray purification device (1), a biological filter deodorization device (3) with an air inlet end communicated with the air outlet end of the second spray purification device (2), a circulating liquid supply device (4) connected with the biological filter deodorization device (3), a UV photolysis tank (5) with an air inlet end communicated with the biological filter deodorization device (3), a fan (6) with an air inlet end communicated with the air outlet end of the UV photolysis tank (5) and a controller (7) electrically connected with the fan (6);

the first spray purification device (1), the biological filter deodorization device (3), the circulating liquid supply device (4) and the UV photolysis tank (5) are electrically connected with the controller (7); the biological filter deodorization device (3) comprises a biological filter body (31) with an air inlet end communicated with the second spray purification device (2), a first control valve (32) arranged at the air inlet end of the biological filter body (31), a second control valve (33) with an air inlet end communicated with the second spray purification device (2) and connected with the first control valve (32) in parallel, a third control valve (34) arranged at the air outlet end of the biological filter body (31), a biological filler layer (35) arranged in the biological filter body (31), a spray assembly (36) arranged in the biological filter body (31) and positioned above the biological filler layer (35), a temperature sensor (37) arranged in the biological filter body (31) and a heater (38) arranged in the biological filter body (31);

the temperature sensor (37) and the heater (38) are electrically connected with the controller (7);

the exhaust end of the second control valve (33) and the exhaust end of the third control valve (34) are communicated with the air inlet end of the UV photolysis tank (5); a guide pipe group (311) is arranged at the bottom of the biological filter body (31) along the horizontal direction, and through holes for gas to pass through are uniformly distributed on the guide pipe group (311);

the aperture of the through hole is larger than the pipe diameter of the guide pipe group (311).

2. The efficient kitchen malodorous gas purification system of claim 1, wherein: the first spray purification device (1) comprises a first spray tower (11) with an air inlet end communicated with an odor source through an exhaust pipeline, a first liquid storage tank (12) arranged at the bottom of the first spray tower (11), a first water pump (13) communicated with a liquid discharge end of the first liquid storage tank (12), a second water pump (14) communicated with the liquid discharge end of the first liquid storage tank (12) and connected with the first water pump (13) in parallel, a first packing layer (15) arranged in the first spray tower (11) and a first demister (16) arranged at the top of the first spray tower (11).

3. An efficient kitchen malodorous gas purification system as claimed in claim 2, wherein: the second spray purification device (2) comprises a second spray tower (21) with an air inlet end communicated with an odor source through an exhaust pipeline, a second liquid storage tank (22) arranged at the bottom of the second spray tower (21), a third water pump (23) communicated with a liquid discharge end of the second liquid storage tank (22), a fourth water pump (24) communicated with the liquid discharge end of the second liquid storage tank (22) and connected with the third water pump (23) in parallel, a second packing layer (25) arranged in the second spray tower (21) and a second demister (26) arranged at the top of the second spray tower (21).

4. The efficient kitchen malodorous gas purification system of claim 1, wherein: the biological filler layer (35) is volcanic rock and bamboo charcoal combined filler.

5. The efficient kitchen malodorous gas purification system of claim 1, wherein: an air flow rate sensor (312) for detecting the air flow rate in the biological filter body (31) is vertically inserted on the inner wall of the biological filter body (31);

the air flow rate sensor (312) is electrically connected with the controller (7).

6. The efficient kitchen malodorous gas purification system of claim 5, wherein: the gas flow rate in the biological filter body (31) is less than or equal to 0.08 meters per second.

7. The efficient kitchen malodorous gas purification system of claim 1, wherein: the biological filter deodorization device (3) further comprises a gas detector (39) arranged at the air inlet end of the first control valve (32);

the gas detector (39) is electrically connected with the controller (7).

8. The efficient kitchen malodorous gas purification system of claim 1, wherein: the circulating liquid supply device (4) comprises a circulating water tank (41) with one liquid inlet end communicated with the liquid outlet end of the biological filter body (31), a fifth water pump (42) with the liquid inlet end communicated with the liquid outlet end of the circulating water tank (41) and a sixth water pump (43) with the liquid inlet end communicated with the liquid outlet end of the circulating water tank (41) and connected in parallel with the fifth water pump (42);

the liquid discharge ends of the fifth water pump (42) and the sixth water pump (43) are communicated with the liquid inlet end of the spraying assembly (36).