A photo-oxidation catalytic waste gas purification device

Abstract

The invention relates to the technical field of photolysis of organic waste gas, and discloses a photo-oxidation catalytic waste gas purification device, comprising a box body of a purification box and a UV photolysis lamp tube, wherein the box body is divided into an air intake chamber and a purification chamber, the lamp tube is evenly installed in the purification chamber, a plurality of partitions penetrating the air intake chamber and the purification chamber are installed in the box body, the partitions separate the air intake chamber and the purification chamber into a plurality of air intake chambers and purification chambers, the adjacent air intake chambers and the purification chambers are interconnected, and the adjacent air intake chambers are connected through a pressure regulating system, the pressure regulating system is also connected to a control system for controlling the start and stop of the lamp tubes in each purification chamber, an air inlet is arranged on the outside of the purification box, the air inlet is connected to the air intake chamber at the outermost end, and an air outlet is arranged at the end of each purification chamber, and the device can control the UV ultraviolet lamp tube in the purification chamber to switch between local operation and overall operation according to the amount of waste gas intake, thereby improving the effective utilization rate of the UV ultraviolet lamp tube to a certain extent and saving energy consumption.

Description

Technical Field

[0001] The invention relates to an exhaust gas purification device, in particular to a photo-oxygen catalytic exhaust gas purification device. Background Art

[0002] The photocatalytic exhaust gas purifier uses a special UV beam to irradiate malodorous gases, cracking malodorous gases such as ammonia, trimethylamine, hydrogen sulfide, methyl sulfide, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide and styrene, sulfide H2S, VOC, benzene, toluene, and xylene molecular chain structure, so that the organic or inorganic high molecular malodorous compound molecular chain is degraded into low molecular compounds such as CO2, H2O, etc. under the irradiation of high-energy ultraviolet beams. High-energy high-ozone UV ultraviolet beams are used to decompose oxygen molecules in the air to produce free oxygen, that is, active oxygen. Because the positive and negative electrons carried by free oxygen are unbalanced, they need to combine with oxygen molecules to produce ozone. After the malodorous gas is input into this purification equipment using exhaust equipment, the purification equipment uses high-energy UV ultraviolet beams and ozone to carry out a coordinated decomposition and oxidation reaction on the malodorous gas, so that the malodorous gas substances are degraded and converted into low molecular compounds, water and carbon dioxide, and then discharged outdoors through the exhaust duct.

[0003] Patent document CN214287573U discloses a photo-oxidation catalytic exhaust gas purifier that is convenient for pipe docking. The air inlet is provided with a first threaded rod that can be rotated by rotating the first threaded rod, so that when the first threaded rod rotates, the connecting rod can be driven to slide with the thread. When the connecting rod slides, the thread can slide with the guide rod. When the connecting rod slides, the fixed block can be driven to move. When the fixed block moves to the inside of the fixed groove, the air inlet and the intake pipe can be clamped and fixed, so that the pipes can be docked and connected conveniently.

[0004] In order to achieve the best purification effect, the existing photocatalytic exhaust gas purifiers will install more UV lamps inside the machine, and the UV lamps will work synchronously. However, in some occasions, the amount of exhaust gas generated is constantly changing, sometimes more and sometimes less. For example, in the catering industry, when there are fewer customers, less fume exhaust gas is generated. At this time, turning on all the UV lamps will waste energy. Summary of the invention

[0005] In view of this, the technical problem to be solved by the present invention is to provide an energy-saving photo-oxidation catalytic exhaust gas purification device which can automatically adjust the number of ultraviolet lamps turned on according to the exhaust gas intake.

[0006] The technical solution of the present invention is achieved in this way:

[0007] The present invention provides a photo-oxidation catalytic waste gas purification device, comprising a purification box body and UV photolysis lamps, characterized in that the inner part of the box body is divided into an air inlet chamber and a purification chamber, the lamps are evenly installed in the purification chambers, a plurality of partitions penetrating the air inlet chamber and the purification chamber are installed in the box body, the partitions divide the air inlet cavity and the purification cavity into a plurality of air inlet cavities and purification cavities, the adjacent air inlet cavities and purification cavities are interconnected, the adjacent air inlet cavities are connected through a pressure regulating system, the pressure regulating system is also connected to a control system for controlling the start and stop of the lamps in each purification cavity, an air inlet is provided on the outer side of the purification box, the air inlet is connected to the outermost air inlet cavity, and an air outlet is provided at the end of each purification cavity.

[0008] Preferably, the number of the air inlet chambers and purification chambers are set to 3, which are arranged in sequence as the first air inlet chamber, the first purification chamber, the second air inlet chamber, the second purification chamber, the third air inlet chamber and the third purification chamber. The air inlet is connected to the first air inlet chamber, the first air inlet chamber is connected to the first purification chamber, the second air inlet chamber is connected to the second purification chamber, and the third air inlet chamber is connected to the third purification chamber.

[0009] Preferably, a connecting pipe is provided on the partition plate in the air intake chamber, and adjacent air intake chambers are connected through the connecting pipe. The pressure regulating system is connected to the connecting pipe. The pressure regulating system includes a baffle plate and a fixed ring. The fixed ring is fixed in the connecting pipe. A guide rod is provided at the center of the fixed ring. The guide rod is fixedly connected to the inner wall of the fixed ring through a connecting rod. The baffle plate is located on the outside of the connecting pipe, and the baffle plate is slidably mounted on the guide rod.

[0010] Preferably, the pressure regulating system is also installed at the air inlet of the first air inlet cavity.

[0011] Preferably, a limiting plate is provided at the rear end of the guide rod, a return spring is sleeved on the guide rod, and the rear end of the shielding plate is connected to the front end of the limiting plate through the return spring.

[0012] Preferably, the control system includes a PLC controller and a start-stop button, the lamp tubes in the first purification chamber, the second purification chamber and the third purification chamber are respectively connected to the PLC controller, the start-stop button is installed on the inner wall of the air intake chamber, the start-stop button is respectively located at the end of the air inlet and the connecting pipe, the baffle is abutted against the start-stop button, and the start-stop button is respectively connected to the PLC controller.

[0013] Preferably, an exhaust pipe is installed on a side of the purification box away from the air inlet, and the air outlets are connected to the exhaust pipe through discharge pipes.

[0014] Preferably, a one-way valve is installed in the exhaust pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides a photocatalytic waste gas purification device. When the waste gas intake is small, the waste gas only circulates in one intake cavity and purification cavity, and only the UV ultraviolet lamp in one purification cavity is turned on to meet the photolysis purification demand of the waste gas; when the waste gas intake increases, under the action of the air pressure and pressure regulating system, the remaining intake cavities are opened in turn, and the control system also turns on the UV ultraviolet lamps in the corresponding purification cavities, thereby increasing the number of UV ultraviolet lamps working and improving the photolysis purification efficiency of the waste gas. The device can control the UV ultraviolet lamps in the purification room to switch between local operation and full operation according to the amount of waste gas intake, thereby improving the effective utilization rate of the UV ultraviolet lamps to a certain extent and saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0020] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0021] In the figure, 1 is a box body, 2 is a lamp tube, 3 is an air inlet chamber, 31 is a first air inlet cavity, 32 is a second air inlet cavity, 33 is a third air inlet cavity, 4 is a purification chamber, 41 is a first purification cavity, 42 is a second purification cavity, 43 is a third purification cavity, 5 is a partition, 6 is an air inlet, 7 is an air outlet, 8 is a connecting pipe, 9 is a baffle, 10 is a fixing ring, 11 is a guide rod, 12 is a limit plate, 13 is a reset spring, 14 is a start-stop button, 15 is an exhaust pipe, 16 is a discharge pipe, and 17 is a one-way valve. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 3The present invention provides a photo-oxidation catalytic waste gas purification device, comprising a purification box body 1 and a UV photolysis lamp 2, characterized in that the interior of the box body 1 is divided into an air inlet chamber 3 on the left and a purification chamber 4 on the right, the lamp 2 is evenly installed in the purification chamber 4, a plurality of partitions 5 penetrating the air inlet chamber 3 and the purification chamber 4 are installed in the box body 1, the partition 5 divides the air inlet cavity and the purification cavity into a plurality of air inlet cavities and purification cavities, the lamp 2 is evenly distributed in the purification cavity, the adjacent air inlet cavities and purification cavities are connected to each other, the adjacent air inlet cavities are connected through a pressure regulating system, the pressure regulating system is also connected to a control system for controlling the start and stop of the lamp 2 in each purification cavity, an air inlet 6 is provided on the outside of the purification box, the air inlet 6 is connected to the outermost air inlet cavity, and an air outlet 7 is provided at the end of each purification cavity.

[0024] The number of the air inlet chambers and the purification chambers are both set to 3, which are arranged in sequence as the first air inlet chamber 31, the first purification chamber 41, the second air inlet chamber 32, the second purification chamber 42, the third air inlet chamber 33 and the third purification chamber 43. The air inlet 6 is connected to the first air inlet chamber 31, the first air inlet chamber 31 is connected to the first purification chamber 41, the second air inlet chamber 32 is connected to the second purification chamber 42, and the third air inlet chamber 33 is connected to the third purification chamber 43.

[0025] The waste gas is connected to the air inlet 6 through an external exhaust device, and the waste gas enters the first purification chamber 41 through the first air inlet chamber 31. The malodorous gas is subjected to a synergistic decomposition and oxidation reaction by UV ultraviolet light beams and ozone, so that the malodorous gas substances are degraded and converted into low molecular weight compounds, water and carbon dioxide, and then the gas is discharged from the purification chamber through the air outlet 7. When the waste gas intake is small, the second air inlet chamber 32 and the third air inlet chamber 33 are in a closed state, and the second purification chamber 42 and the third purification chamber 43 are also in a closed state. The waste gas only circulates in the first air inlet chamber 31 and the first purification chamber 41. The control system turns off the UV ultraviolet lamp 2 in the second purification chamber 42 and the third purification chamber 43, and only turns on the UV ultraviolet lamp 2 in the first purification chamber 41, which can meet the photolysis purification needs of the waste gas; when the waste gas intake increases, the air pressure in the first air inlet chamber 31 and the first purification chamber 41 increases, and the first air inlet chamber 31 and the second air inlet chamber 31 are in a closed state. The pressure regulating system between the air chambers 32 works, and the two are interconnected. The waste gas enters the second air intake chamber 32 and the second purification chamber 42. The control system turns on the UV ultraviolet lamp 2 in the second purification chamber 42. When the waste gas intake volume continues to increase to a certain air pressure, the pressure regulating system between the second air intake chamber 32 and the third air intake chamber 33 works, and the waste gas enters the third air intake chamber 33 and the third purification chamber 43. The control system turns on the UV ultraviolet lamp 2 in the third purification chamber 43. At this time, the air intake chamber 3 and the purification chamber 4 work in full, improving the photolysis purification efficiency of the waste gas. The device can control the UV ultraviolet lamp 2 in the purification chamber 4 to switch between local and full operation by increasing and decreasing the amount of waste gas intake, thereby improving the effective utilization rate of the UV ultraviolet lamp 2 to a certain extent and saving energy consumption.

[0026] A connecting pipe 8 is provided on the partition 5 in the air intake chamber 3, and the adjacent air intake chambers are connected through the connecting pipe 8. The pressure regulating system is connected to the connecting pipe 8. The pressure regulating system includes a baffle plate 9 and a fixed ring 10. The fixed ring 10 is fixed in the connecting pipe 8. A guide rod 11 is provided at the center of the fixed ring 10. The guide rod 11 is fixedly connected to the inner wall of the fixed ring 10 through a connecting rod. The baffle plate 9 is located on the outside of the connecting pipe 8, and the baffle plate 9 is slidably mounted on the guide rod 11.

[0027] The pressure regulating system is also installed at the air inlet 6 of the first air inlet cavity 31 .

[0028] A limiting plate 12 is disposed at the rear end of the guide rod 11 , a return spring 13 is sleeved on the guide rod 11 , and the rear end of the shielding plate 9 is connected to the front end of the limiting plate 12 via the return spring 13 .

[0029] When no waste gas enters the purification box, the shielding plate 9 at the air inlet 6 is covered at the air inlet 6 under the action of the reset spring 13, closing the air inlet channel, and the UV ultraviolet lamp 2 in the purification chamber 4 is in a closed state; when waste gas enters, the shielding plate 9 moves backward along the guide rod 11 under the action of air pressure, the reset spring 13 is compressed, and the air inlet channel is opened. When the air pressure continues to rise and reaches a specific value, the shielding plates 9 between the first air inlet cavity 31 and the second air inlet cavity 32 and the second air inlet cavity 32 and the third air inlet cavity 33 are pushed open successively, the connecting pipes 8 are opened in turn, and the UV ultraviolet lamp 2 works in turn; when the air pressure drops, the pressure on the shielding plate 9 is reduced accordingly, and it is reset again under the action of the reset spring 13, closing the corresponding connecting pipe 8 or air inlet channel, and the control system controls the UV ultraviolet lamp 2 to delay closing, ensuring that the UV ultraviolet lamp 2 can continue to work for a certain period of time, and photolysis purification of the residual waste gas in the purification chamber 4.

[0030] The control system includes a PLC controller and a start-stop button 14. The PLC controller uses a commercially available STM32F101V8 single-chip microcomputer and can be installed on the top of the box 1. The lamps 2 in the first purification chamber 41, the second purification chamber 42 and the third purification chamber 43 are respectively connected to the PLC controller. The start-stop button 14 is installed on the inner wall of the air inlet chamber. The start-stop button 14 is respectively located at the ends of the air inlet 6 and the connecting pipe 8. The baffle plate 9 abuts against the start-stop button 14, and the start-stop button 14 is respectively connected to the PLC controller. When the baffle plate 9 blocks the airway under the action of the reset spring 13, the baffle plate 9 abuts against the start-stop button 14, and the UV ultraviolet lamp 2 is in a closed state; when the baffle plate 9 is pushed away and loses contact with the start-stop button 14, the PLC controller controls the UV ultraviolet lamp 2 to turn on.

[0031] An exhaust pipe 15 is installed on a side of the purification box away from the air inlet 6 , and the air outlets 7 are connected to the exhaust pipe 15 via discharge pipes 16 .

[0032] A one-way valve 17 is installed in the exhaust pipe 15. The one-way valve 17 is a commercially available gas check valve. The gas purified in each purification chamber is collected into the total exhaust pipe 15 through the exhaust pipe 16, and the exhaust pipe 15 uniformly transports the purified gas outward. The one-way valve 17 prevents gas backflow.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A photocatalytic exhaust gas purification device, comprising a purification box body and a UV photolysis lamp tube, It is characterized in that The inner part of the box body is divided into an air inlet chamber and a purification chamber, the lamp tubes are evenly installed in the purification chamber, and a plurality of partitions penetrating the air inlet chamber and the purification chamber are installed in the box body. The partitions divide the air inlet chamber and the purification chamber into a plurality of air inlet chambers and purification chambers. The adjacent air inlet chambers and purification chambers are interconnected, and the adjacent air inlet chambers are connected through a pressure regulating system. The pressure regulating system is also connected to a control system for controlling the start and stop of the lamp tubes in each purification chamber. An air inlet is provided on the outside of the purification box, and the air inlet is connected to the outermost air inlet chamber. An air outlet is provided at the end of each purification chamber.

2. A photo-oxidation catalytic exhaust gas purification device according to claim 1, It is characterized in that The number of the air inlet chambers and purification chambers is set to 3, which are arranged in sequence as the first air inlet chamber, the first purification chamber, the second air inlet chamber, the second purification chamber, the third air inlet chamber and the third purification chamber. The air inlet is connected to the first air inlet chamber, the first air inlet chamber is connected to the first purification chamber, the second air inlet chamber is connected to the second purification chamber, and the third air inlet chamber is connected to the third purification chamber.

3. A photo-oxidation catalytic exhaust gas purification device according to claim 2, It is characterized in that A connecting pipe is provided on the partition plate in the air intake chamber, and adjacent air intake chambers are connected through the connecting pipe. The pressure regulating system is connected to the connecting pipe. The pressure regulating system includes a baffle plate and a fixed ring. The fixed ring is fixed in the connecting pipe. A guide rod is provided at the center of the fixed ring. The guide rod is fixedly connected to the inner wall of the fixed ring through a connecting rod. The baffle plate is located on the outside of the connecting pipe, and the baffle plate is slidably mounted on the guide rod.

4. A photo-oxidation catalytic exhaust gas purification device according to claim 3, It is characterized in that The pressure regulating system is also installed at the air inlet of the first air inlet cavity.

5. A photo-oxidation catalytic exhaust gas purification device according to claim 4, It is characterized in that A limiting plate is provided at the tail end of the guide rod, a return spring is sleeved on the guide rod, and the tail end of the shielding plate is connected to the front end of the limiting plate through the return spring.

6. A photo-oxidation catalytic exhaust gas purification device according to claim 3, It is characterized in that The control system includes a PLC controller and a start-stop button. The lamps in the first purification chamber, the second purification chamber and the third purification chamber are respectively connected to the PLC controller. The start-stop button is installed on the inner wall of the air intake chamber. The start-stop button is respectively located at the end of the air intake port and the connecting pipe. The baffle plate abuts against the start-stop button, and the start-stop button is respectively connected to the PLC controller.

7. The photo-oxidation catalytic exhaust gas purification device according to claim 1, It is characterized in that An exhaust pipe is installed on one side of the purification box away from the air inlet, and the air outlets are connected to the exhaust pipe through discharge pipes.

8. A photo-oxidation catalytic exhaust gas purification device according to claim 7, It is characterized in that A one-way valve is installed in the exhaust pipe.

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