CN106492590B - Waste liquid collecting safety cover and waste liquid collecting device - Google Patents
Waste liquid collecting safety cover and waste liquid collecting device Download PDFInfo
- Publication number
- CN106492590B CN106492590B CN201611185255.5A CN201611185255A CN106492590B CN 106492590 B CN106492590 B CN 106492590B CN 201611185255 A CN201611185255 A CN 201611185255A CN 106492590 B CN106492590 B CN 106492590B
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- waste liquid
- liquid collecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D2053/221—Devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
Abstract
The invention relates to a waste liquid collecting safety cover which comprises a body and a filter, wherein the body is hermetically matched with an opening of a waste liquid collecting device, the filter comprises a connecting part, a filtering part connected to one end of the connecting part, and a cover shell covering one end of the filtering part, which is far away from the connecting part, the connecting part is provided with an air inlet communicated with the opening of the waste liquid collecting device, the filtering part is provided with an accommodating cavity provided with a filter element, the accommodating cavity comprises a first opening end and a second opening end which are opposite, the first opening end is communicated with the air inlet, and the cover shell is provided with a plurality of air holes communicated with the accommodating cavity. Through joining in marriage the body is sealed in the waste liquid collecting vessel to through the inlet port intercommunication, and set up the filter with the inlet port intercommunication on the body, make the organic volatile harmful gas in the waste liquid collecting vessel filter earlier and discharge, guaranteed experimenter's physical and mental health, improved chemistry experiment waste liquid treatment's security and reliability. Still provide a waste liquid collection device.
Description
Technical Field
The invention relates to the technical field of chemical wastewater treatment, in particular to a waste liquid collecting safety cover and a waste liquid collecting device.
Background
With the continuous innovation and development of scientific technology, laboratories for chemical technology research and development are more and more, and the chemical wastewater generated therewith also becomes a non-negligible problem. Generally, wastewater discharged from chemical experiments is classified into two types, one type is waste liquid with high concentration and volatility, and the other type is waste liquid generated from experiments and comprehensive waste liquid of acid, alkali, heavy metal and organic matters generated from washing experimental equipment, glassware and the like. No matter the first type of experimental waste liquid or the second type of experimental waste liquid need be discharged into the waste liquid bucket temporarily in the experimentation to and after the experiment, but in the first type of experimental waste liquid, and in some second type of experimental waste liquid, have volatilizable organic solvent, easily volatilize from the waste liquid bucket, cause the threat to experimenter's physical and mental health.
To solve this problem, most chemical laboratories are equipped with auxiliary equipment such as air conditioners or air purification equipment to remove harmful gases from the room. However, the treatment mode of 'pollution first and treatment later' cannot timely remove or eliminate air with harmful gas, and still has adverse effects on physical and psychological health of experimenters.
Disclosure of Invention
Based on this, it is necessary to provide a waste liquid collection safety cover and a waste liquid collection device that can seal a waste liquid barrel well and prevent that organic volatile matter from releasing to the air to the problem that the waste liquid barrel is easily volatilized to traditional chemistry experiment waste liquid, influences experimenter physical and mental health.
The utility model provides a safety cover is collected to waste liquid, includes body and filter, the sealed joining in marriage of body connects in the opening of waste liquid collection device, the filter include connecting portion, connect in the filter house of connecting portion one end to and the cover is located the filter house is kept away from the housing of the one end of connecting portion, the sealed joining in marriage of connecting portion connect in the body, and have with the inlet port of waste liquid collection device's opening intercommunication, the filter house has the holding cavity of installing the filter core, the holding cavity includes relative first open end and second open end, first open end with the inlet port intercommunication, the cover housing cover is located the second open end, and set up with a plurality of bleeder vents of holding cavity intercommunication, the inlet port the holding cavity reaches the bleeder vent forms an air current channel.
In one embodiment, the filter further includes a filter membrane disposed at the second open end of the receiving cavity.
In one embodiment, the filter element is activated carbon particles.
In one embodiment, the filter element is a sintered carbon rod matched with the accommodating cavity in shape.
In one embodiment, the radial dimension of the accommodating cavity is gradually increased from the first open end to the second open end.
In one embodiment, the accommodating cavity is substantially in an inverted cone shape.
In one embodiment, the waste liquid collecting safety cover further comprises a waste liquid conveying pipe joint, and the waste liquid conveying pipe joint is hermetically matched with the body and communicated with the opening of the waste liquid collecting device.
In one embodiment, the body includes a cap and a cover, the cap is coupled to the opening of the waste liquid collecting device in a sealing manner, the cover is coupled to the cap in a sealing manner, the cover is provided with a mounting hole penetrating through the cover, and the connecting portion is screwed into the mounting hole.
In one embodiment, the waste liquid collecting safety cover further comprises a first sealing ring, the cover body is provided with a first annular groove along the circumferential direction of the cover body, the first sealing ring is embedded in the first annular groove, the opening of the cover cap is also matched with a protrusion along the circumferential direction, the cover body is arranged at a position, spaced from the first annular groove, along the circumferential direction of the cover body, and a second annular groove is further arranged, and the matched protrusion is embedded in the second annular groove so as to connect the cover body and the cover cap into a whole.
In one embodiment, the waste liquid collecting safety cover further comprises a second sealing ring, the connecting portion is provided with a third annular groove along the circumferential direction of the connecting portion, and the second sealing ring is embedded in the third annular groove.
The utility model provides a waste liquid collection device, includes the waste liquid collecting vessel and collects the safety cover as above-mentioned waste liquid, the feed liquor hole has been seted up on waste liquid collecting vessel top, the safety cover is collected to the waste liquid install in the feed liquor hole.
Above-mentioned safety cover and waste liquid collection device are collected to waste liquid connects in the waste liquid collecting vessel through sealing the body to through the inlet port intercommunication, and set up the filter with the inlet port intercommunication on the body, make the harmful gas that can volatilize in the waste liquid collecting vessel filter earlier and discharge, guaranteed experimenter's physical and mental health, improved chemical experiment waste liquid treatment's security and reliability.
Drawings
FIG. 1 is a schematic view of a waste liquid collecting safety cap according to an embodiment of the present invention;
fig. 2 is a partially enlarged view of a portion a of the waste liquid collecting safety cap shown in fig. 1.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the waste liquid collecting safety cap 10 according to an embodiment of the present invention is installed at an opening end of the waste liquid collecting device, and is filtered by a filter, so that harmful substances cannot be volatilized, thereby ensuring physical and psychological health of experimenters.
Specifically, the waste liquid collecting safety cover 10 includes a body 12 and a filter 14, wherein the body 12 is hermetically fitted to the opening of the waste liquid collecting device. The filter 14 includes a connecting portion 142, a filtering portion 144 and a casing 146, the connecting portion 142 is hermetically coupled to the body 12 and has an air inlet 1422 communicating with an opening of the waste liquid collecting device, and the filtering portion 144 has a receiving cavity (not shown) provided with a filter element 1444. The accommodating cavity includes a first opening end and a second opening end opposite to each other, the first opening end is communicated with the air inlet hole 1422, the housing 146 is covered on the second opening end and is provided with a plurality of air holes 1462 communicated with the accommodating cavity, and an air flow channel is formed by the air inlet hole 1422, the accommodating cavity and the air holes 1462.
This safety cover 10 is collected to waste liquid still includes waste liquid delivery pipe joint 16, and this waste liquid delivery pipe joint 16 sealing joint connects in body 12, and communicates with waste liquid collection device's opening to inject experiment waste liquid into waste liquid collection device. Thus, during or after the experiment, the volatile organic compounds in the waste liquid collecting device enter the filtering portion 144 through the air inlet 1422 of the connecting portion 142, are filtered by the filter element 1444, and are discharged from the air holes 1462 of the housing 146. Due to the filtering effect of the filtering portion 144, and after passing through the air flow channel formed by the air inlet 1422, the accommodating cavity, and the air holes 1462, volatile organic compounds are basically deposited in the waste liquid collecting safety cover 10, and clean air is discharged, thereby ensuring physical and psychological health of experimenters. It should be understood that the vent holes 1462 communicate with the waste liquid chamber of the waste liquid collecting device for containing the experimental waste liquid through the air inlet holes 1422 and the accommodating chamber, so that the waste liquid chamber of the waste liquid collecting device is equal to the external air pressure, and the experimental waste liquid can be input into the waste liquid chamber from the waste liquid conveying pipe joint 16.
Preferably, the body 12 includes a cap 122 and a cover 124, the top end of the waste liquid collecting barrel is opened with a liquid inlet hole, the cap 122 is hermetically coupled to the liquid inlet hole, the cover 124 is hermetically coupled to the cap 122, the cover 124 is opened with a mounting hole (not shown) penetrating through the cover 124, and the connecting portion 142 is screwed into the mounting hole. The waste liquid delivery pipe joint 16 is hermetically connected to the cover 124 and is communicated with the liquid inlet hole of the waste liquid collecting barrel.
In this embodiment, the cap 122 and the cover 124 are both elastic, and the radial dimension of the liquid inlet hole is slightly smaller than the radial dimension of the outline of the cap 122, so that the cap 122 can be stably and sealingly coupled to the liquid inlet hole. The cap 122 is a shell structure with two open ends, the cover 124 is detachably and hermetically connected to the upper opening of the cap 122, and the lower opening of the cap 122 is located in the waste liquid collecting barrel. The periphery of the upper opening of the cap 122 is formed with a fitting protrusion 1222 extending inward toward the opening center along the circumferential direction, the cover 124 is correspondingly provided with a second annular groove (not labeled) along the circumferential direction, and the fitting protrusion 1222 is inserted into the second annular groove to integrally connect the cover 124 and the cap 122.
Specifically, the cover 124 is formed with a step (not shown), the second annular groove is provided on a vertical step surface of the step, and when the fitting projection 1222 is fitted into the second annular groove, a horizontal step surface of the step abuts against a lower surface of the fitting projection 1222. Thus, the experimental waste liquid or the volatile organic gas is discharged through between the lower surface of the fitting projection 1222 and the horizontal step surface of the step portion, between the end surface of the fitting projection 1222 and the sidewall of the second annular groove, and between the upper surface of the fitting projection 1222 and the upper wall of the second annular groove. Due to the tight fit among the three sets of mating surfaces, the sealing performance between the cap 122 and the cover 124 is ensured.
Further, in order to ensure the sealing performance between the cap 124 and the cap 122, the waste liquid collecting safety cap 10 further includes a first sealing ring 18, the cap 124 is provided with a first annular groove 1249 along the circumferential direction thereof, and the first annular groove 1249 is spaced apart from the second annular groove and is located near one end of the cap 124 extending into the waste liquid collecting barrel. The first sealing ring 18 is disposed in the first annular groove 1249 and abuts against a sidewall of the inner cavity of the waste liquid collecting barrel, thereby further achieving sealing.
It should be understood that the cover 124 and the cap 122 are elastic and made of polymer material by injection molding, and when the cap 122 is pressed by the inner wall of the liquid inlet hole, the first sealing ring 18 is tightly pressed against the inner cavity of the cap 122, thereby ensuring good sealing performance.
It is understood that, in the present embodiment, the cover 124 and the cap 122 are detachably coupled in a sealing manner, and in other embodiments, the cover 124 and the cap 122 may also be integrally formed, which is not limited herein.
In this embodiment, the cover 124 further has a connection hole 1244 for installing the waste liquid conveying pipe joint 16, the connection hole 1244 is connected to the inner cavity of the waste liquid collecting barrel, and a portion of the connection hole 1244 is provided with an internal thread, and the waste liquid conveying pipe joint 16 is screwed into the connection hole 1244. Specifically, this waste liquid delivery pipe joint 16 includes first waste liquid delivery pipe joint and second waste liquid delivery pipe joint, and specifically, first waste liquid delivery pipe joint is the waste liquid conveyer pipe of connecting the external diameter and being 2.8 ~ 3.2 millimeters, and second waste liquid delivery pipe joint is the waste liquid conveyer pipe that the external diameter is 6.4 ~ 9 millimeters, and first waste liquid delivery pipe joint and second waste liquid delivery pipe joint's quantity is 1 ~ 3. Of course, in other embodiments, the type of waste liquid delivery pipe joint 16 may include a plurality of types, and the number may be determined according to actual situations, and is not limited herein.
In this embodiment, the connecting portion 142 is cylindrical, a mounting hole penetrating through the cover 124 is formed at the center of the cover 124, the radial dimension of the mounting hole is larger than the connecting hole 1244 for installing the waste liquid conveying pipe joint 16, and a portion of the mounting hole is provided with an internal thread, and the connecting portion 142 is screwed to the connecting hole 1244. Further, the waste liquid collecting safety cover 10 further includes a second sealing ring 19, the connecting portion 142 is provided with a third annular groove (not shown) along the circumferential direction thereof, and the second sealing ring 19 is embedded in the third annular groove and abuts against the inner wall of the mounting hole, which is not provided with the internal thread, so as to perform a sealing function.
Wherein, the radial dimension of the accommodating cavity is gradually increased from the first opening end to the second opening end. In this embodiment, the accommodating cavity is substantially in the shape of an inverted cone, so that the air flow can flow through the accommodating cavity without dead angles after entering the accommodating cavity from the air inlet 1422, and the air flow is fully contacted with the filter element 1444 to perform a filtering function. Specifically, the filter element 1444 is activated carbon particles, which are filled in the receiving cavity in an inverted cone shape, but in other embodiments, the filter element 1444 may also be a sintered carbon rod, which is not limited herein, but the shape of the sintered carbon rod needs to be matched with the receiving cavity, so that the air flow is in full contact with the filter element 1444.
It should be understood that the receiving cavity is substantially in the shape of an inverted cone, the second opening end of the receiving cavity is larger than the opening of the first switch end, and the opening shape from the first opening end to the second opening end is gradual and excessive, so that the filter element 1444, i.e. the activated carbon particles, is fully filled, and after the air flow enters the receiving cavity from the air inlet 1422, the receiving cavity can be gradually filled along the opening direction of the receiving cavity, without dead angle, and can be fully contacted with the filter element 1444.
Preferably, the filter 14 further comprises a filter membrane 148 disposed at the second open end of the receiving cavity. In this embodiment, the filtering membrane 148 is a dense fiber filtering membrane 148, and the filtering membrane 148 covers the second opening end of the accommodating cavity, so as to prevent the activated carbon particles as the filter element 1444 from overflowing from the accommodating cavity, and perform a secondary filtering function, thereby further preventing organic substances from volatilizing. The cover 146 is fastened to the top of the filtering part 144, and has a plurality of air holes 1462 uniformly distributed therein, so that the gas in the waste liquid collecting barrel can be volatilized.
Based on the above-mentioned waste liquid collecting safety cover 10, the present invention further provides a waste liquid collecting device, which comprises a waste liquid collecting barrel and the above-mentioned waste liquid collecting safety cover 10, wherein the top end of the waste liquid collecting barrel is provided with a liquid inlet hole, and the waste liquid collecting safety cover 10 is installed in the liquid inlet hole.
Above-mentioned safety cover 10 and waste liquid collection device are collected to waste liquid connects in the waste liquid collecting vessel through sealing body 12 to through inlet port 1422 intercommunication, and set up the filter 14 with inlet port 1422 intercommunication on body 12, make the harmful gas that can volatilize in the waste liquid collecting vessel filtered and discharge, guaranteed experimenter's physical and mental health, improved chemical experiment waste liquid treatment's security and reliability.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A waste liquid collecting safety cover is characterized by comprising a body and a filter, wherein the body is in sealing fit with an opening of a waste liquid collecting device, the filter comprises a connecting part, a filtering part connected to one end of the connecting part, and a housing covering one end of the filtering part far away from the connecting part, the connecting part is in sealing fit with the body and is provided with an air inlet communicated with the opening of the waste liquid collecting device, the filtering part is provided with a containing cavity provided with a filter element, the containing cavity comprises a first opening end and a second opening end which are opposite, the first opening end is communicated with the air inlet, the housing is covered at the second opening end and is provided with a plurality of air holes communicated with the containing cavity, and the air inlet, the containing cavity and the air holes form an air flow channel; the waste liquid collecting safety cover also comprises a waste liquid conveying pipe joint, wherein the waste liquid conveying pipe joint is hermetically matched with the body, is communicated with the opening of the waste liquid collecting device and is used for injecting experimental waste liquid into the waste liquid collecting device; the body comprises a cap and a cover body, the cap is in sealing fit with the opening of the waste liquid collecting device, the cover body is in sealing fit with the cap, the cover body is provided with a mounting hole penetrating through the cover body, and the connecting part is in threaded connection with the mounting hole; the cover body is also provided with a connecting hole for installing a waste liquid conveying pipe joint, the connecting hole is communicated with the inner cavity of the waste liquid collecting barrel, and the waste liquid conveying pipe joint is connected in the connecting hole; the filter also comprises a filtering membrane, the filtering membrane is arranged at the second opening end of the accommodating cavity, and the filtering membrane is a dense fiber filtering membrane; the filter element is active carbon particles or a sintered carbon rod matched with the shape of the accommodating cavity.
2. The waste collection safety cap of claim 1, wherein the radial dimension of the receiving cavity increases from the first open end to the second open end.
3. The waste liquid collecting safety cap according to claim 2, wherein the receiving cavity is substantially inverted cone-shaped.
4. The waste liquid collecting safety cover according to claim 1, further comprising a first sealing ring, wherein the cover body is provided with a first annular groove along a circumferential direction thereof, the first sealing ring is embedded in the first annular groove, the opening of the cap is further provided with a protrusion along the circumferential direction, the cover body is further provided with a second annular groove spaced from the first annular groove along the circumferential direction thereof, and the protrusion is embedded in the second annular groove to integrally connect the cover body and the cap.
5. The waste liquid collecting safety cover as claimed in claim 1, further comprising a second sealing ring, wherein the connecting portion is provided with a third annular groove along a circumferential direction thereof, and the second sealing ring is embedded in the third annular groove.
6. A waste liquid collecting device, characterized in that, comprises a waste liquid collecting barrel and a waste liquid collecting safety cover as claimed in any one of claims 1 to 5, wherein the top end of the waste liquid collecting barrel is provided with a liquid inlet hole, and the waste liquid collecting safety cover is arranged in the liquid inlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185255.5A CN106492590B (en) | 2016-12-20 | 2016-12-20 | Waste liquid collecting safety cover and waste liquid collecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611185255.5A CN106492590B (en) | 2016-12-20 | 2016-12-20 | Waste liquid collecting safety cover and waste liquid collecting device |
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| CN106492590A CN106492590A (en) | 2017-03-15 |
| CN106492590B true CN106492590B (en) | 2022-12-13 |
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| JP4255341B2 (en) * | 2003-09-11 | 2009-04-15 | 参天製薬株式会社 | Anti-contamination cap |
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| CN201988400U (en) * | 2011-02-14 | 2011-09-28 | 厦门大学 | Self-cleaning washing bottle with gas purifying function |
| CN202683233U (en) * | 2012-05-14 | 2013-01-23 | 东北农业大学 | Waste liquor pre-processing and gas purification integrated chemical experiment waste-liquor storage device |
| KR101584052B1 (en) * | 2014-04-21 | 2016-01-20 | 주식회사 피코그램 | RO filter with side-sream type |
| CN204841084U (en) * | 2015-07-20 | 2015-12-09 | 天地缘酒业有限公司 | Silence oil -free air compressor waste liquid waste gas collection device |
| CN105766888B (en) * | 2016-02-25 | 2018-01-30 | 田秀 | formalin sample device |
| CN206404532U (en) * | 2016-12-20 | 2017-08-15 | 广东顺德工业设计研究院(广东顺德创新设计研究院) | Waste collection safety head and waste collecting device |
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| EP0089110A2 (en) * | 1982-02-23 | 1983-09-21 | Coloplast A/S | Filter for ostomy bags |
| CN1787869A (en) * | 2002-10-28 | 2006-06-14 | Ge02科技公司 | Ceramic diesel engine exhaust filters |
| CN203107918U (en) * | 2013-02-21 | 2013-08-07 | 朱京传 | Anesthesia exhaust gas adsorption filter |
| CN204841343U (en) * | 2015-07-21 | 2015-12-09 | 青岛祥青环保技术有限公司 | Gas absorption unit |
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| CN106492590A (en) | 2017-03-15 |
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Effective date of registration: 20191021 Address after: Longgang District of Shenzhen City, Guangdong province 518116 Longgang Tongle community under the banyan village, on the third floor of the two on the left Applicant after: MIRACLEAN TECHNOLOGY Co.,Ltd. Address before: 528300 Guangdong City, Shunde Province, Beijiao Town, Guangdong industrial design city design Plaza, B2 District, the two floor of the three floor Applicant before: GUANGDONG SHUNDE INDUSTRIAL DESIGN INSTITUTE (GUANGDONG SHUNDE INNOVATIVE DESIGN INSTITUTE) |
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