CN216321107U - Biphase biological dripping filtration tower for waste gas treatment - Google Patents
Biphase biological dripping filtration tower for waste gas treatment Download PDFInfo
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- CN216321107U CN216321107U CN202122750981.XU CN202122750981U CN216321107U CN 216321107 U CN216321107 U CN 216321107U CN 202122750981 U CN202122750981 U CN 202122750981U CN 216321107 U CN216321107 U CN 216321107U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The utility model discloses a biphase biological trickling filtration tower for waste gas treatment, which comprises a trickling filtration box; a biological trickling filter is arranged in the trickling filter box, a collecting tank is arranged at the bottom end of the biological trickling filter, a circulating box is arranged on one side of the trickling filter box, and a controller is arranged at the bottom end of the front side of the trickling filter box; according to the utility model, the downward structure of the air outlet is adopted, when waste gas enters the trickling filter box, the waste gas enters the fixed through pipe through the through holes at two sides of the bottom end of the biological trickling filter, then enters the biological trickling filter through the air outlet at the bottom end of the fixed through pipe and reacts with microorganisms on the surface of the biological filler, and meanwhile, the baffles at two sides of the surface of the fixed through pipe can effectively block added nutrient substances at two sides of the fixed through pipe, so that the air outlet can be effectively prevented from being blocked by adding a large amount of nutrient substances, the waste gas can normally and fully contact with the microorganisms on the surface of the biological filler through the air outlet, and the purification efficiency of the waste gas is improved.
Description
Technical Field
The utility model relates to the technical field of waste gas treatment, in particular to a two-phase biological dripping and filtering tower for waste gas treatment.
Background
The waste gas purification (flow gas purification) mainly refers to the work of treating industrial waste gas such as dust particles, smoke and dust, peculiar smell gas and toxic and harmful gas generated in industrial places, and common waste gas purification includes factory smoke and waste gas purification, workshop dust and waste gas purification, organic waste gas purification, waste gas peculiar smell purification, acid-base waste gas purification, chemical waste gas purification and the like, so in order to consume vocs malodorous gas in waste gas, the vocs malodorous gas is decomposed into carbon dioxide and water, and personnel eliminate the vocs malodorous gas by using a biological dripping tower.
The existing biological dripping filtration tower has the defects that:
1. when the existing biological trickling filtration tower uses microorganisms to purify and deodorize waste gas, the microorganisms can consume a large amount of energy and react with substances in the waste gas, so that the inside microorganisms need a large amount of nutrient substances to grow, but the reaction bed inside the biological trickling filtration tower is blocked due to the addition of the nutrient substances, so that the five waste gases can not normally contact with the microorganisms, and the waste gas treatment effect is reduced.
2. Present biological trickling filter tower is in long-term use, and the inside biofilm carrier of trickling filter tower can appear ageing, because ageing phenomenon is serious, causes a large amount of pieces to appear in biological trickling filter pond inside, and the piece can fall into the inside bottom of trickling filter box through the small opening under the effect of water simultaneously, consequently causes a large amount of pieces to pile up inside the trickling filter box, will take place the caking phenomenon in trickling filter box inside for a long time to personnel of not being convenient for clear up.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a two-phase biological dripping filtration tower for waste gas treatment, which solves the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a biphase biological trickling filtration tower for waste gas treatment comprises a trickling filtration box; a biological trickling filter is arranged in the trickling filter box, a collecting tank is arranged at the bottom end of the biological trickling filter, a circulating box is arranged on one side of the trickling filter box, and a controller is arranged at the bottom end of the front side of the trickling filter box;
the bottom end of the interior of the biological trickling filter is provided with a fixed through pipe, the bottom end of the surface of the fixed through pipe is provided with an air outlet, two sides of the surface of the fixed through pipe are provided with baffles, the bottom end of the biological trickling filter is provided with a leak hole, and two ends of the fixed through pipe penetrate through the side surface of the biological trickling filter;
the side surface in the collecting tank is provided with an installation slot, a filter screen is arranged in the installation slot and is positioned under the leak hole, and a water flow one-way valve is arranged at an outlet at the bottom end of the collecting tank.
Preferably, trickling filter one side bottom is equipped with the waste gas import, and trickling filter top is equipped with the outlet of purified gas, and trickling filter is inside to be equipped with isolated plate, and biological trickling filter is located isolated plate central point and puts.
Preferably, the top end of one side of the front surface of the circulation box is provided with a first water suction pump through a guide pipe, and the output end of the first water suction pump is communicated with the bottom end of the trickling filter box through a guide pipe.
Preferably, circulation case surface is equipped with the second suction pump, and circulation case one side top is equipped with the water filling port, and the water filling port surface is equipped with the solenoid valve, and the second suction pump output is equipped with the shower through the pipe, and shower surface bottom is equipped with the nozzle, and the shower is located directly over the biological trickling filter.
Preferably, a connecting plate is arranged on one side of the filter screen, a fixing plate is arranged at one end of the connecting plate and fixed on the side face of the trickling filter box through mounting screws, and a sealing ring is arranged at the position of the fixing contact of the fixing plate and the trickling filter box.
Preferably, the controller surface is equipped with display screen and control panel, and controller side bottom is connected with the plug through the wire, and the controller passes through wire and first suction pump, second suction pump and solenoid valve electric connection.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the downward structure of the air outlet is adopted, when waste gas enters the trickling filter box, the waste gas enters the fixed through pipe through the through holes at two sides of the bottom end of the biological trickling filter, then enters the biological trickling filter through the air outlet at the bottom end of the fixed through pipe and reacts with microorganisms on the surface of the biological filler, and meanwhile, the baffles at two sides of the surface of the fixed through pipe can effectively block added nutrient substances at two sides of the fixed through pipe, so that the air outlet can be effectively prevented from being blocked by adding a large amount of nutrient substances, the waste gas can normally and fully contact with the microorganisms on the surface of the biological filler through the air outlet, and the purification efficiency of the waste gas is improved.
2. According to the utility model, by additionally arranging the filter screen and the water flow one-way valve, when microorganisms react with substances in waste gas to generate water and carbon dioxide, and when the generated water flows out through the leak hole at the bottom end of the biological trickling filter, the filter screen at the bottom end can block debris flowing along with the water, so that the debris of biological fillers is prevented from falling to the bottom end in the trickling filter box, meanwhile, the debris can be conveniently cleaned by personnel, and after a certain amount of water in the collecting tank is collected, the water flow one-way valve at the bottom end of the collecting tank is opened under the action of water pressure, and the water in the collecting tank is discharged to the bottom end in the trickling filter box for recycling.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side cross-sectional view of the present invention;
FIG. 3 is a main sectional view of the present invention;
FIG. 4 is a cross-sectional top view of the present invention;
FIG. 5 is an enlarged view of A of FIG. 2 according to the present invention;
fig. 6 is an enlarged view of B in fig. 3 according to the present invention.
In the figure: 1. a trickling filter box; 101. an exhaust gas inlet; 102. a purified gas outlet; 103. an insulating panel; 2. a controller; 201. a display screen; 202. a control panel; 203. a plug; 3. a first water pump; 4. a circulation box; 401. a second water pump; 402. a water injection port; 403. an electromagnetic valve; 404. a shower pipe; 405. a nozzle; 5. a biological trickling filter; 501. fixing the through pipe; 502. an air outlet; 503. a baffle plate; 504. a leak hole; 6. collecting tank; 601. installing a slot; 602. a filter screen; 603. a water flow check valve; 604. a connecting plate; 605. a fixing plate; 606. a seal ring; 607. and (5) mounting screws.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, an embodiment of the present invention is shown: a biphase biological trickling filtration tower for waste gas treatment comprises a trickling filtration box 1; a biological trickling filter 5 is arranged in the trickling filter box 1, a collecting tank 6 is arranged at the bottom end of the biological trickling filter 5, a circulating box 4 is arranged at one side of the trickling filter box 1, and a controller 2 is arranged at the bottom end of the front side of the trickling filter box 1;
the bottom end in the biological trickling filter 5 is provided with a fixed through pipe 501, the bottom end of the surface of the fixed through pipe 501 is provided with an air outlet 502, two sides of the surface of the fixed through pipe 501 are provided with baffles 503, the bottom end of the biological trickling filter 5 is provided with a leakage hole 504, and two ends of the fixed through pipe 501 penetrate through the side surface of the biological trickling filter 5;
a mounting slot 601 is arranged on the side surface inside the collecting tank 6, a filter screen 602 is arranged inside the mounting slot 601, the filter screen 602 is positioned right below the leakage hole 504, and a water flow check valve 603 is arranged at the outlet of the bottom end of the collecting tank 6;
specifically, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the water flow check valve 603 is H42W-16P, when in use, a person first connects a power supply through the controller 2, then the person discharges the collected waste gas into the interior of the trickling filter 1 for waste gas deodorization treatment, after the waste gas enters the interior of the trickling filter 1, the waste gas will make first contact with the internal circulating liquid to eliminate the water-soluble substances in the waste gas, then the waste gas enters the interior of the fixed through pipe 501 through the through hole on the side of the biological trickling filter 5, then the waste gas enters the interior of the biological trickling filter 5 through the air outlet 502 at the bottom end of the fixed through pipe 501 to react with the microorganisms on the surface of the biological filler, and meanwhile, the baffle 503 on both sides of the surface of the fixed through pipe 501 can effectively block the added nutrients on both sides of the fixed through pipe 501, so that the air outlet 502 can be effectively prevented from being blocked by adding a large amount of nutrients, so that the waste gas can normally contact with the microorganisms on the surface of the biological filler through the air outlet 502, thereby improving the purification efficiency of the waste gas, after the waste gas enters the inner membrane of the microorganisms, chemical reaction can be generated, so that harmless carbon dioxide is generated, then the carbon dioxide is discharged to the atmosphere through the purified gas outlet 102, water can fall into the collecting tank 6 at the bottom end of the biological trickling filter 5 through the leak hole 504 at the bottom end of the biological trickling filter 5, debris generated by aging of the biological filler can fall into the collecting tank 6 through the leak hole 504 while the water falls, the filter screen 602 at the bottom end can block the debris falling along with the water when the water falls, the debris of the biological filler is prevented from falling into the bottom end of the trickling filter 1, meanwhile, the personnel can clean the debris conveniently, when the water in the collecting tank 6 is collected to a certain amount, the water flow check valve 603 at the bottom end of the collecting tank 6 enables the internal extrusion ball to be popped out of the channel under the action of water pressure, then water flows into the bottom end inside the trickling filter box 1 through the channel, and when the water inside the collecting tank 6 can not reach corresponding water pressure, the channel is blocked by the inside extrusion ball of the water flow one-way valve 603 under the action of the spring, so that water backflow is prevented, and the water at the bottom end inside the trickling filter box 1 can be recycled.
Further, a waste gas inlet 101 is arranged at the bottom end of one side of the trickling filter box 1, a purified gas outlet 102 is arranged at the top end of the trickling filter box 1, an isolation plate 103 is arranged inside the trickling filter box 1, and the biological trickling filter 5 is positioned in the center of the isolation plate 103;
specifically, as shown in fig. 2, when performing the deodorization of the exhaust gas, a person discharges the collected exhaust gas into the interior of the trickling filter box 1 through the exhaust gas inlet 101, the exhaust gas first comes into contact with the circulating liquid inside, then the exhaust gas enters the interior of the bio-trickling filter 5 at the center of the isolation plate 103 to perform a biological reaction process, and then the purified exhaust gas is discharged to the atmosphere through the purified gas outlet 102.
Further, the top end of one side of the front surface of the circulating box 4 is provided with a first water suction pump 3 through a guide pipe, and the output end of the first water suction pump 3 is communicated with the bottom end of the trickling filter box 1 through a guide pipe;
specifically, as shown in fig. 1, when a large amount of circulating liquid accumulates at the bottom end inside the trickling filter tank 1, a person conveys the circulating liquid into the circulating tank 4 through the first suction pump 3 for recycling.
Further, a second water pump 401 is arranged on the surface of the circulation box 4, a water filling port 402 is arranged at the top end of one side of the circulation box 4, an electromagnetic valve 403 is arranged on the surface of the water filling port 402, a spray pipe 404 is arranged at the output end of the second water pump 401 through a guide pipe, a nozzle 405 is arranged at the bottom end of the surface of the spray pipe 404, and the spray pipe 404 is positioned right above the biological trickling filter 5;
specifically, as shown in fig. 2, after the first suction pump 3 pumps the water at the bottom end inside the trickling filter box 1 into the circulation box 4, the water is then mixed with the circulation liquid inside the circulation box 4, and then the circulation liquid is conveyed to the top end inside the trickling filter box 1 through the second suction pump 401, and then the nozzle 405 at the bottom end of the spray pipe 404 sprays the circulation liquid into the trickling filter box 1, so as to ensure that the PH and the humidity inside the trickling filter box 1 are in a normal state, and meanwhile, because the circulation liquid has a certain loss in the using process, a person needs to periodically open the electromagnetic valve 403 on the surface of the water filling port 402, and new circulation liquid is injected into the box circulation box 4.
Furthermore, a connecting plate 604 is arranged on one side of the filter screen 602, a fixing plate 605 is arranged at one end of the connecting plate 604, the fixing plate 605 is fixed on the side surface of the trickling filter box 1 through a mounting screw 607, and a sealing ring 606 is arranged at the fixed contact part of the fixing plate 605 and the trickling filter box 1;
specifically, as shown in fig. 6, when a person needs to replace the filter screen 602 inside the trickling filter box 1, the person takes out the filter screen 602 at one end of the fixing plate 605, which is connected to the connecting plate 604, from the trickling filter box 1 by loosening the mounting screws 607, cleans the filter screen 602, and then puts the cleaned filter screen 602 back into the trickling filter box 1 for use.
Further, the surface of the controller 2 is provided with a display screen 201 and a control panel 202, the bottom end of the side surface of the controller 2 is connected with a plug 203 through a lead, and the first water pump 3 of the controller 2 is electrically connected with the first water pump 3, the second water pump 401 and the electromagnetic valve 403 through leads;
specifically, as shown in fig. 1, when in use, the controller 2 is connected to a power supply by using a plug 203, and then the display screen 201 displays relevant parameters, and simultaneously controls the operating states of the first water pump 3, the second water pump 401 and the electromagnetic valve 403 by using the control panel 202.
The working principle is as follows: the model of the water flow one-way valve 603 is H42W-16P, when in use, a person firstly connects a power supply through the controller 2 by using the plug 203, then the display screen 201 displays relevant parameters, and simultaneously controls the working states of the first water pump 3, the second water pump 401 and the electromagnetic valve 403 by using the control panel 202, then the person discharges the collected waste gas into the interior of the trickling filter box 1 for waste gas deodorization treatment, after the waste gas enters the interior of the trickling filter box 1, the waste gas can be in first contact with the internal circulating liquid to eliminate substances dissolved in water in the waste gas, then the waste gas enters the interior of the fixed through pipe 501 through the through hole on the side surface of the biological trickling filter 5, then enters the interior of the biological trickling filter 5 through the air outlet hole 502 at the bottom end of the fixed through pipe 501 to react with microorganisms on the surface of the biological filler, and simultaneously the baffles 503 on two sides on the surface of the fixed through pipe 501 can effectively block added nutrients on two sides of the fixed through pipe 501, after the waste gas enters the inner membrane of the microorganism, a chemical reaction is generated, so that harmless carbon dioxide is generated, then the carbon dioxide is discharged to the atmosphere through the purified gas outlet 102, the water drops into the collecting tank 6 at the bottom end of the biological trickling filter 5 through the leak hole 504 at the bottom end of the biological trickling filter 5, debris generated by aging of biological fillers can drop into the collecting tank 6 along with the water through the leak hole 504 while the water drops, the filter screen 602 at the bottom end can block the debris dropping along with the water during dropping, the debris of the biological fillers is prevented from dropping into the bottom end of the trickling filter 1, meanwhile, the personnel can clean the debris along with the debris, after the water in the collecting tank 6 is collected to a certain amount, the water flow one-way valve 603 at the bottom end of the collecting tank 6 enables the internal extrusion ball to bounce out of a leakage channel under the action of water pressure, and then the water flows into the bottom end of the trickling filter 1 through the channel, when the inside water of collecting vat 6 can't reach corresponding water pressure, the inside ball that extrudees of rivers check valve 603 plugs up the passageway under the effect of spring, thereby prevent the water backward flow, first suction pump 3 is taken into circulation case 4 inside with the water of the inside bottom of trickling filter case 1 after that, mix with the inside circulation liquid of circulation case 4 afterwards, carry the inside top of trickling filter case 1 through second suction pump 401 with the circulation liquid afterwards, there is nozzle 405 of shower 404 bottom to spray inside trickling filter case 1 with the circulation liquid after that, guarantee that the inside PH of trickling filter case 1 and humidity are in normal condition, simultaneously because the circulation liquid has certain loss in the use, consequently personnel need regularly open the solenoid valve 403 on water filling port 402 surface, the inside new circulation liquid that pours into of case circulation case 4.
The utility model is not described in detail, but is well known to those skilled in the art.
Finally, it is to be noted that: although the present invention has been described in detail with reference to examples, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (6)
1. A two-phase biological trickling filtration tower for waste gas treatment comprises a trickling filtration box (1); the method is characterized in that: a biological trickling filter (5) is arranged in the trickling filter box (1), a collecting tank (6) is arranged at the bottom end of the biological trickling filter (5), a circulating box (4) is arranged on one side of the trickling filter box (1), and a controller (2) is arranged at the bottom end of the front side of the trickling filter box (1);
the bottom end in the biological trickling filter (5) is provided with a fixed through pipe (501), the bottom end of the surface of the fixed through pipe (501) is provided with an air outlet (502), two sides of the surface of the fixed through pipe (501) are provided with baffles (503), the bottom end of the biological trickling filter (5) is provided with a leak hole (504), and two ends of the fixed through pipe (501) penetrate through the side surface of the biological trickling filter (5);
the side of the inner portion of the collecting tank (6) is provided with an installation slot (601), a filter screen (602) is arranged in the installation slot (601), the filter screen (602) is located under the leakage hole (504), and a water flow check valve (603) is arranged at the outlet of the bottom end of the collecting tank (6).
2. The biphasic biological trickling filter for treating exhaust gas of claim 1, wherein: the biological trickling filter is characterized in that a waste gas inlet (101) is formed in the bottom end of one side of the trickling filter box (1), a purified gas outlet (102) is formed in the top end of the trickling filter box (1), an isolation plate (103) is arranged inside the trickling filter box (1), and the biological trickling filter (5) is located in the central position of the isolation plate (103).
3. The biphasic biological trickling filter for treating exhaust gas of claim 1, wherein: the circulation box (4) openly one side top is equipped with first suction pump (3) through the pipe, and first suction pump (3) output communicates each other through pipe and trickling filter box (1) bottom.
4. The biphasic biological trickling filter for treating exhaust gas of claim 1, wherein: circulation case (4) surface is equipped with second suction pump (401), and circulation case (4) one side top is equipped with water filling port (402), and water filling port (402) surface is equipped with solenoid valve (403), and second suction pump (401) output is equipped with shower (404) through the pipe, and shower (404) surface bottom is equipped with nozzle (405), and shower (404) are located directly over biological trickling filter (5).
5. The biphasic biological trickling filter for treating exhaust gas of claim 1, wherein: one side of the filter screen (602) is provided with a connecting plate (604), one end of the connecting plate (604) is provided with a fixing plate (605), the fixing plate (605) is fixed on the side surface of the trickling filter box (1) through a mounting screw (607), and a sealing ring (606) is arranged at the fixed contact part of the fixing plate (605) and the trickling filter box (1).
6. The biphasic biological trickling filter for treating exhaust gas of claim 1, wherein: the surface of the controller (2) is provided with a display screen (201) and a control panel (202), the bottom end of the side face of the controller (2) is connected with a plug (203) through a wire, and the controller (2) is electrically connected with the first water suction pump (3), the second water suction pump (401) and the electromagnetic valve (403) through wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122750981.XU CN216321107U8 (en) | 2021-11-11 | 2021-11-11 | Biphase biological dripping filtration tower for waste gas treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122750981.XU CN216321107U8 (en) | 2021-11-11 | 2021-11-11 | Biphase biological dripping filtration tower for waste gas treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN216321107U true CN216321107U (en) | 2022-04-19 |
| CN216321107U8 CN216321107U8 (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122750981.XU Active CN216321107U8 (en) | 2021-11-11 | 2021-11-11 | Biphase biological dripping filtration tower for waste gas treatment |
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| Country | Link |
|---|---|
| CN (1) | CN216321107U8 (en) |
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- 2021-11-11 CN CN202122750981.XU patent/CN216321107U8/en active Active
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| CN216321107U8 (en) | 2022-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model |
Correction item: Patentee|Address|Patentee Correct: Baiaotai environmental protection technology (Hangzhou) Co.,Ltd.|310013 room 362, No. 4025, South Ring Road, Puyan street, Binjiang District, Hangzhou City, Zhejiang Province|ZHEJIANG WYNCA CHEMICAL INDUSTRY GROUP Co.,Ltd. False: Baiaotai environmental protection technology (Hangzhou) Co.,Ltd.|310013 room 362, No. 4025, South Ring Road, Puyan street, Binjiang District, Hangzhou City, Zhejiang Province|Zhejiang Xin'an Chemical Industry Group Co., Ltd. Number: 16-01 Volume: 38 Correction item: Patentee|Address|Patentee Correct: Baiaotai environmental protection technology (Hangzhou) Co.,Ltd.|310013 room 362, No. 4025, South Ring Road, Puyan street, Binjiang District, Hangzhou City, Zhejiang Province|ZHEJIANG WYNCA CHEMICAL INDUSTRY GROUP Co.,Ltd. False: Baiaotai environmental protection technology (Hangzhou) Co.,Ltd.|310013 room 362, No. 4025, South Ring Road, Puyan street, Binjiang District, Hangzhou City, Zhejiang Province|Zhejiang Xin'an Chemical Industry Group Co., Ltd. Number: 16-01 Page: The title page Volume: 38 |
|
| CU01 | Correction of utility model |