阅读说明：本技术 一种高效的餐厨恶臭气体净化系统 (Efficient kitchen malodorous gas purification system ) 是由 蒋伟 杨旭 向延周 王涛 于 2021-06-21 设计创作，主要内容包括：本申请涉及气体净化系统的技术领域,尤其涉及一种高效的餐厨恶臭气体净化系统,其包括第一喷淋净化装置、进气端与第一喷淋净化装置的排气端连通的第二喷淋净化装置、进气端与第二喷淋净化装置的排气端连通的生物滤池除臭装置、与生物滤池除臭装置连接的循环供液装置、进气端与生物滤池除臭装置连通的UV光解箱、进气端与UV光解箱排气端连通的风机和与风机电性连接的控制器；所述第一喷淋净化装置、生物滤池除臭装置、循环供液装置和UV光解箱均与控制器电性连接。本申请能使餐厨恶臭气体的除臭更高效且净化率更高。(The application relates to the technical field of gas purification systems, in particular to an efficient kitchen malodorous gas purification system which comprises a first spraying purification device, a second spraying purification device with an air inlet end communicated with an exhaust end of the first spraying purification device, a biological filter deodorization device with an air inlet end communicated with an exhaust end of the second spraying purification device, a circulating liquid supply device connected with the biological filter deodorization device, a UV photolysis tank with an air inlet end communicated with the biological filter deodorization device, a fan with an air inlet end communicated with an exhaust end of the UV photolysis tank and a controller electrically connected with the fan; first spray purifier, biological filter deodorizing device, circulation supply liquid device and UV photodissociation case all with controller electric connection. This application enables the deodorization of meal kitchen foul gas more high-efficient and purification rate is higher.)

1. The utility model provides an efficient meal kitchen foul gas clean system which characterized in that: the device comprises a first spraying purification device (1), a second spraying purification device (2) with an air inlet end communicated with an exhaust end of the first spraying purification device (1), a biological filter deodorization device (3) with an air inlet end communicated with an exhaust end of the second spraying purification device (2), a circulating liquid supply device (4) connected with the biological filter deodorization device (3), a UV photolysis box (5) with an air inlet end communicated with the biological filter deodorization device (3), a fan (6) with an air inlet end communicated with an exhaust end of the UV photolysis box (5) and a controller (7) electrically connected with the fan (6);

first purifier (1), biological filter deodorizing device (3), circulation supply liquid device (4) and UV photodissociation case (5) all with controller (7) electric connection spray.

2. The efficient kitchen malodorous gas purification system according to claim 1, characterized in that: the first spraying purification device (1) comprises a first spraying 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 spraying tower (11), a first water pump (13) communicated with a liquid discharging end of the first liquid storage tank (12), a second water pump (14) communicated with the liquid discharging 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 spraying tower (11) and a first demister (16) arranged at the top of the first spraying tower (11).

3. The efficient kitchen malodorous gas purification system according to claim 2, characterized in that: the second spraying and purifying device (2) comprises a second spraying 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 spraying 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 spraying tower (21) and a second demister (26) arranged at the top of the second spraying tower (21).

4. The efficient kitchen malodorous gas purification system according to claim 1, characterized in that: the biological filter deodorization device (3) comprises a biological filter body (31) with an air inlet end communicated with the second spraying and purifying 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 spraying and purifying 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 spraying 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 both electrically connected with the controller (7)

And the exhaust end of the second control valve (33) and the exhaust end of the third control valve (34) are both communicated with the air inlet end of the UV photolysis box (5).

5. The efficient kitchen malodorous gas purification system according to claim 4, characterized in that: the biological filler layer (35) is a volcanic rock and bamboo charcoal combined filler.

6. The efficient kitchen malodorous gas purification system according to claim 4, characterized in that: a flow 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 flow guide pipe group (311);

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

7. The efficient kitchen malodorous gas purification system according to claim 6, characterized in that: an air flow velocity sensor (312) for detecting the air flow velocity in the biological filter body (31) is vertically inserted on the inner wall of the biological filter body (31);

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

8. The efficient kitchen malodorous gas purification system according to claim 7, characterized in that: the gas flow speed in the biological filter body (31) is less than or equal to 0.08 meter per second.

9. The efficient kitchen malodorous gas purification system according to claim 4, characterized in that: the biological filter deodorization device (3) also 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).

10. The efficient kitchen malodorous gas purification system according to claim 4, characterized in that: the circulating liquid supply device (4) comprises a circulating water tank (41) with a liquid inlet end communicated with a liquid discharge end of the biological filter body (31), a fifth water pump (42) with a liquid inlet end communicated with the liquid discharge end of the circulating water tank (41), and a sixth water pump (43) with a liquid inlet end communicated with the liquid discharge end of the circulating water tank (41) and connected with the fifth water pump (42) in parallel;

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).

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, the kitchen waste can be rapidly degraded by microorganisms in the processes of collection, transportation and treatment to generate a large amount of malodorous substances. In the treatment process of the kitchen waste, except for generating inorganic substances such as ammonia, hydrogen sulfide and the like, most malodorous substances are volatile organic compounds at the same time. These malodorous substances have a strong irritant effect on human body senses, and harm the health of workers engaged in the garbage collection and treatment and residents nearby the treatment plant.

In the related technology, the deodorization process for treating the kitchen malodorous gas mainly comprises the processes of washing absorption, activated carbon adsorption, advanced oxidation, chemical oxidation, thermal oxidation and the like, but the deodorization efficiency and the purification rate are all deficient.

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

Disclosure of Invention

In order to make kitchen foul gas's deodorization more high efficiency and purification rate higher, this application provides an efficient kitchen foul gas clean system.

The application provides a high efficiency kitchen foul gas clean system adopts following technical scheme:

an efficient kitchen malodorous gas purification system comprises a first spray purification device, a second spray purification device, a biological filter deodorization device, a circulating liquid supply device, a UV photolysis box, a fan and a controller, wherein the air inlet end of the second spray purification device is communicated with the exhaust end of the first spray purification device;

first spray purifier, biological filter deodorizing device, circulation supply liquid device and UV photodissociation case all with controller electric connection.

Through adopting above-mentioned technical scheme, the fan starts the back, the negative pressure that produces enables foul gas through whole clean system, in this process, first spray purifier can absorb partial alkaline material in the foul gas and reduce dust content, the second sprays purifier can absorb partial acid material in the foul gas and reduce dust content, microorganism among the biological filter deodorizing device can degrade the foul gas through among the biological filter deodorizing device into harmless compound, such as water, carbon dioxide and organic acid etc. thereby make the pollutant get rid of, UV photolysis case utilizes the shortwave ultraviolet ray between 200 nanometers to 280 nanometers to carry out the deodorization of organic waste gas, can also reduce the production of secondary pollutant ozone, the purification rate is improved, and the operation of whole system is controlled by the controller, time saving and labor saving, and convenient for operation, high efficiency.

Optionally, the first spray purification device includes a first spray tower with an air inlet end communicated with the odor source through an exhaust pipe, a first liquid storage tank arranged at the bottom of the first spray tower, a first water pump communicated with a liquid discharge end of the first liquid storage tank, a second water pump communicated with the liquid discharge end of the first liquid storage tank and connected with the first water pump in parallel, a first packing layer arranged in the first spray tower, and a first demister arranged at the top of the first spray tower.

Through adopting above-mentioned technical scheme, be equipped with the absorption liquid in the first liquid reserve tank of first spray column bottom, the absorption liquid is extracted and is carried to the top of first spray column under the effect of first water pump or second water pump and sprays, and the absorption liquid will follow the acidic material absorption in the foul gas of process in the first spray column to detach partial dust, then most water smoke of production is carried to the second and sprays in the purification device after being got rid of by the defroster interception. And the double water pumps are arranged for one use, so that the normal use of the whole purification system cannot be influenced even if one water pump fails.

Optionally, the second spray purification device includes a second spray tower with an air inlet end communicated with the odor source through an exhaust pipe, a second liquid storage tank arranged at the bottom of the second spray tower, a third water pump communicated with a liquid discharge end of the second liquid storage tank, a fourth water pump communicated with the liquid discharge end of the second liquid storage tank and connected with the third water pump in parallel, a second packing layer arranged in the second spray tower, and a second demister arranged at the top of the second spray tower. And the double water pumps are arranged for one use, so that the normal use of the whole purification system cannot be influenced even if one water pump fails.

By adopting the technical scheme, the absorption liquid is filled in the second liquid storage tank at the bottom of the second spray tower, the absorption liquid is extracted and conveyed to the top of the second spray tower under the action of the third water pump or the fourth water pump to be sprayed, the absorption liquid absorbs acidic substances in the malodorous gas passing through the second spray tower and removes partial dust, and then most of generated water mist is intercepted and removed by the second demister, and the gas enters the subsequent purification process.

Optionally, the biofilter deodorization device comprises a biofilter body, an air inlet end of which is communicated with the second spraying and purifying device, a first control valve arranged at the air inlet end of the biofilter body, a second control valve, an air inlet end of which is communicated with the second spraying and purifying device and is connected with the first control valve in parallel, a third control valve arranged at the exhaust end of the biofilter body, a biofilter layer arranged in the biofilter body, a spraying assembly arranged in the biofilter body and positioned above the biofilter layer, a temperature sensor arranged in the biofilter body and a heater arranged in the biofilter body;

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

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

Through adopting above-mentioned technical scheme, first control flap opens, and second control flap closes, and odorous gas gets into this internal back of biological filter from the bottom, moves from bottom to top, and when the foul smell was through the bio-packing layer, adnexed microorganism carries out metabolism and degrades the foul smell into harmless compound in the bio-packing layer, for example carbon dioxide, water and organic acid etc to make most foul gas pollutant get rid of. When the biological filter body is overhauled or the concentration of malodorous gas is low and is not required to be degraded by a biodegradation mode, the first control valve and the third control valve can be closed, so that the odor directly enters the UV photolysis box through the exhaust pipeline. Under the lower service environment of temperature in winter, when temperature sensor detects that the temperature in the biological filter body is lower, can transmit the data that detect to the controller to control the heater by the controller and heat, guarantee that the gas temperature that gets into biological deodorization section is fit for the growth and the reproduction of deodorization microorganism, make the deodorization effect better.

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

By adopting the technical scheme, the volcanic and bamboo charcoal combined filler has the advantages of large surface area, acid and alkaline corrosion resistance, microbial growth suitability, good water retention property, corrosion resistance, easy film formation and the like, so that excessive microorganisms are adsorbed in the filler layer as much as possible, the effective retention time of the contact of gas and the biological filler layer is prolonged, and the deodorization 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 gas to pass through 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 reposition of redundant personnel back get into the biofilm carrier district, makes foul smell and biofilm carrier layer more abundant contact, improves deodorization effect.

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

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

Through adopting above-mentioned technical scheme, air flow rate sensor can detect the velocity of flow of this internal gas of biological filter to with data transmission to controller, when the too big deodorization effect that can influence of gas flow velocity, the controller can send control signal to the fan, makes the fan rotational speed reduce, thereby makes the gas flow velocity reduce, with the influence that reduces the gas flow velocity and produce the deodorization effect.

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

By adopting the technical scheme, the flow velocity of gas in the biological filter body is not too high, the flow velocity of gas is controlled to be 0.08 m/s, the contact time of 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 s is better under the common condition.

Optionally, the biological filter deodorization device further comprises a gas detector arranged at the gas 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 gaseous concentration that is about to get into the foul gas in the biological filter deodorizing device, and when gaseous concentration was lower, gas detector was data transmission to controller to send control signal by the controller, biological filter deodorizing device and circulation supply liquid device stop the operation, so not only can make whole clean system's purification efficiency 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 a liquid inlet end of the circulating water tank is communicated with a liquid discharge end of the biological filter body;

and 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.

Through adopting above-mentioned technical scheme, the water in the circulating water tank is under the effect of fifth water pump or sixth water pump, is extracted and is carried to the spray assembly at biological filter body top. Then the sprayed water and the water generated by biodegradation are gathered 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 can enable the 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 the dust content, the second spraying purification device can absorb part of acidic substances in the malodorous gas and reduce the dust content, microorganisms in the biofilter deodorization device can degrade the odor passing through the biofilter deodorization device into harmless compounds such as water, carbon dioxide, organic acid and the like, 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, and the operation of the whole system is controlled by the controller, so that the time and labor are saved, the operation is convenient, and the purification efficiency is improved;

2. honeycomb duct in this application can shunt the foul smell, makes the foul smell reposition of redundant personnel after get into the biofilm carrier district, makes the foul smell and the more abundant contact of bio-packing layer, improves deodorization effect.

Drawings

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

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

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

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

Description of reference numerals:

100. a high concentration of an odorous gas source; 200. a chimney; 300. a pickling solution replenishing source; 400. a supplementary source of alkaline wash; 500. a process water source;

1. a first spray purification device; 11. a first spray tower; 12. a first liquid storage tank; 13. a first water pump; 14. a second water pump; 15. a first filler layer; 16. a first demister;

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 packing layer; 26. a second demister;

3. a biological filter deodorization device; 31. a biological filter body; 311. a flow guide pipe group; 312. an air flow rate sensor; 32. a first control valve; 33. a second control valve; 34. a third control valve; 35. a biological 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 circulating water tank; 42. a fifth water pump; 43. sixth Water Pump

5. A UV photolysis tank;

6. a fan;

7. and a controller.

Detailed Description

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

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

Wherein, the inlet end of the first spray purifier 1 can adopt the exhaust duct to link with the high concentration odor source 100, the inlet end of the second spray purifier 2 communicates with the exhaust end of the first spray purifier 1, the high concentration odor enters the second spray purifier 2 to purify after being preliminarily purified by the first spray purifier 1, the inlet end of the biological filter deodorizing device 3 communicates with the exhaust end of the second spray purifier 2, the circulating liquid supply device 4 communicates with the biological filter deodorizing device 3 through two drainage pipes to form a circulating liquid supply passage. The inlet end of UV photodissociation case 5 communicates with the exhaust end of biological filter deodorizing device 3, the inlet end of fan 6 communicates with the exhaust end of UV photodissociation case 5, and finally discharge in delivering to chimney 200 through exhaust duct with the gas after purifying, controller 7 respectively with first purifier 1 that sprays, biological filter deodorizing device 3, circulation liquid supply device 4, UV photodissociation case 5 and 6 electric connection of fan, a normal operating for controlling whole clean system. In the whole purification system, the drainage pipeline can be made of PVC pipes, and the exhaust pipeline can be made of FRP materials.

Specifically, referring to fig. 1, the first spray purification device 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 demister 16. The first spray tower 11 is an acid washing tower, a plurality of nozzles are installed at the top in the first spray tower 11 along the horizontal direction and used for spraying the absorption liquid uniformly downwards, the first liquid storage tank 12 is located at the bottom of the first spray tower 11 and integrally formed with the first spray tower 11, and the first liquid storage tank 12 is used for storing the absorption liquid which is generally a 20% sulfuric acid solution. The first water pump 13 is respectively communicated with the first liquid storage tank 12 and a nozzle at the top of the first spray tower 11 through a water discharge 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 the 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 respectively communicated with the nozzles at the tops of the first liquid storage tank 12 and the first spray tower 11 through a drainage pipeline and is connected with the first water pump 13 in parallel, when one of the water pumps is damaged, the other water pump can be started, the condition that the whole purification system cannot be used due to maintenance is avoided, and the deodorization is more efficient. Moreover, the first water pump 13 and the second water pump 14 are both electrically connected with the controller 7, so that the operation is convenient.

The first packing layer 15 can be packed by pall ring, generally, the first packing layer 15 is arranged in a double-layer structure, so that the retention time of waste gas can be prolonged, the odor can be fully contacted with the absorption liquid and decomposed, and the deodorization effect is better. The first demister 16 is installed at the top of the first spray tower 11 and used for removing water mist, and in a possible embodiment of the application, the first demister 16 can adopt a baffle demister so that the deodorization effect is better.

Referring to fig. 1, the second spray purification device 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 demister 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, and a plurality of nozzles are also mounted at the top in the second spray tower 21 and can adopt 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 a drainage pipeline so as to pump the 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 through water discharge pipelines respectively and is connected with the third water pump 23 in parallel, when one of the water pumps is damaged, the other water pump can be started, the condition that the whole purification system cannot be used due to maintenance is avoided, and the deodorization is more efficient. And, the third water pump 23 and the fourth water pump 24 are both electrically connected with the controller 7, so that the operation is more convenient.

The second packing layer 25 can be packed by pall ring, generally, the second packing layer 25 is arranged in a double-layer structure, so that the retention time of waste gas can be prolonged, the odor can be fully contacted with the absorption liquid and absorbed, and the deodorization effect is better. The second demister 26 is installed at the top of the second spray tower 21 and used for removing water mist, and in a possible embodiment of the present application, the second demister 26 may be a baffle demister, so that the deodorization effect is better.

Referring to fig. 1 and 2, the biofilter deodorization 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 unit 36, a temperature sensor 37, and a heater 38.

Wherein, the biological filter body 31 can adopt a sealing box body with a rectangular structure, the air inlet end of the biological filter body 31 is positioned on the side surface of the bottom, the air outlet end of the biological filter body 31 is positioned on the top surface, the air inlet end of the biological filter body 31 is connected with the air outlet end of the second spray tower 21 through an air outlet pipeline, and the first control valve 32 is arranged on the air outlet pipeline at the inlet end of the biological filter body 31. 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 connected with the first control valve 32 in parallel, 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 pipeline at the exhaust end of the biological filter body 31, and the exhaust end of the third control valve 34 is connected with the inlet end of the UV photolysis tank 5 and is connected with the first control valve 32 in parallel. The first control valve 32, the second control valve 33 and the third control valve 34 are all electrically connected with the controller 7, and when the biofilter body 31 is being overhauled or the biofilter body 31 is not needed to be used, the controller 7 can send out a control signal to close the first control valve 32 and the third control valve 34, and simultaneously open the second control valve 33 to enable gas to directly flow into the UV photolysis tank 5.

In a possible embodiment of the present application, the bio-filler layer 35 is filled in the middle of the bio-filter body 31 by using a volcanic and bamboo charcoal combined filler, and the bio-filler layer 35 can provide a larger living attachment space for microorganisms. The spraying component 36 consists of a liquid inlet pipe and spraying heads, wherein one end of the liquid inlet pipe is communicated with the circulating liquid supply device 4 through a water discharge pipeline, the spraying heads are uniformly distributed on the liquid inlet pipe, and the spraying component 36 is used for uniformly spraying process water on the biological filler layer 35 and slowly permeating the process water.

Referring to fig. 1 and 3, a temperature sensor 37 is mounted on the inner side of the biofilter body 31 near the bio-filler layer 35, the temperature sensor 37 is used for detecting the temperature in the biofilter body 31, the heater 38 may be an electric heating wire, the temperature in the biofilter body 31 can be raised after the heater 38 is powered on, when the temperature sensor 37 detects that the temperature in the biofilter body 31 is low, data can be transmitted to the controller 7 electrically connected with the temperature sensor 37, and then the controller 7 sends a control signal to the heater 38 electrically connected with the controller 7, so that the heater 38 works, the temperature in the biofilter body 31 is raised, the heat balance is maintained, and the temperature of the gas entering the bio-filler layer 25 is suitable for the growth and propagation of microorganisms.

Furthermore, in order to make the odor more uniformly blow to the biological filler layer 35, the deodorization effect is better. The bottom of the biological filter body 31 is provided with a flow guide pipe set 311 along the horizontal direction, the flow guide pipe set 311 consists of a main flow pipe and a plurality of secondary flow guide pipes, wherein the air inlet end of the main flow pipe is connected with the air inlet end of the biological filter body 31, the secondary flow guide pipes are vertically connected with the main flow pipe, through holes for air to pass through are evenly distributed on the main flow pipe and the secondary flow guide pipes, the aperture of each through hole is larger than the pipe diameters of the main flow pipe and the secondary flow guide pipes in the flow guide pipe set 311, and the flow velocity of the air when the air 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, so that the time for the gas to pass through the biofilm layer 35 is greater than or equal to 20 seconds.

Further, in order to make the deodorization of the biofilter deodorization device 3 more efficient, an air flow rate sensor 312 is vertically inserted on the inner wall of the biofilter body 31, and the air flow rate sensor 312 is electrically connected with the controller 7. This air flow velocity sensor 312 can adopt low velocity of flow gas mass flow sensor to monitor air flow velocity, when the gas flow velocity is greater than 0.08 meters per second, after controller 7 received the signal, send the control model to fan 6, make fan 6's rotational speed reduce, and then make the gas velocity of flow in the biological filter body 31 all the time, avoid influencing the deodorization effect because of the gas velocity is too fast.

In addition, in order to make the whole purification system more energy-saving, the development direction of energy conservation and low carbon tends to be used. Referring to fig. 2, the biofilter deodorization apparatus 3 further includes a gas detector 39 disposed at the air inlet end of the first control valve 32, the gas detector 39 may be a gas concentration detector of gas concentration VOCs for detecting the odor concentration, and the gas detector 39 is electrically connected to the controller 7. When the gas detector 39 detects that the gas concentration is low, and the biological filter deodorization device 3 and the circulating liquid supply device 4 are not needed, the controller 7 can control the first control valve 32 and the third control valve 34 to be opened, and then the second control valve 33 is opened, so that the gas can directly enter the UV photolysis tank 5 from the exhaust end of the second spray tower 21 through the exhaust pipeline.

Referring to fig. 1, the circulating liquid supply device 4 includes a circulating water tank 41, a fifth water pump 42, and a sixth water pump 43. Wherein, the circulating water tank 41 can be made of a sealed box body, and one liquid inlet end of the circulating water tank 41 is communicated with the liquid discharge 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 can flow 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 connected in parallel. The fifth water pump 42 and the sixth water pump 43 are both in telecommunication connection with the controller 7, one of the two water pumps is used for standby, when one of the water pumps is damaged and needs to be overhauled, the other water pump can continue to work, and the operation of the whole purification system is not influenced.

The air inlet end of the UV photolysis box 5 is communicated with the biofilter body 31 and the air outlet end of the second spray tower 21 through air outlet pipelines. In this application possible implementation mode, UV photodissociation case 5 internally mounted has the multiunit UV fluorescent tube to further get rid of the foul smell, improve purifying effect, in this application embodiment, the UV fluorescent tube can adopt the wavelength to be 200 nanometers to 280 nanometers between the ultraviolet lamp, is used for making 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 roots's fan, and the inlet end of fan 6 passes through exhaust duct and the exhaust end intercommunication of UV photodissociation case 5, and the exhaust end accessible exhaust duct of fan 6 communicates with chimney 200, makes the gas that UV photodissociation case 5 was handled discharge the external world through 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 programs described above. 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 demister 16, the second demister 26, the first control valve 32, the second control valve 33, the third control valve 34, the UV photolysis tank 5 and the fan 6 are all connected to the I/O bus 75 through control signal peripheral output ports, and the air flow rate sensor 312, the temperature sensor 37 and the gas detector 39 are all connected to the I/O bus 75 through control signal peripheral input ports.

The implementation principle of the efficient kitchen malodorous gas purification system is as follows:

when the whole system carries out the dust removal operation of high concentration foul gas, at first, controller 7 sends control signal to fan 6 and UV photodissociation case 5, makes the two begin work, and exhaust duct and dust removal part before fan 6 are negative pressure state, and the foul smell is discharged to chimney 200 from the blast pipe after the acid cleaning purification effect of first spray purifier 1, the alkali cleaning purification effect of second spray purifier 2, the microbial degradation deodorization effect of biological filter deodorizing device 3 and the photodissociation deodorization effect of UV photodissociation case 5 in proper order. The multiple deodorization process has better deodorization effect and higher deodorization efficiency.

When the concentration of the odor 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 is connected from the second spray purification device 2 to the UV photolysis tank 5 through the exhaust pipeline for photolysis deodorization.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.