CN213265905U - Aeration disc rotating device - Google Patents
Aeration disc rotating device Download PDFInfo
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- CN213265905U CN213265905U CN202021786430.8U CN202021786430U CN213265905U CN 213265905 U CN213265905 U CN 213265905U CN 202021786430 U CN202021786430 U CN 202021786430U CN 213265905 U CN213265905 U CN 213265905U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The present disclosure relates to an aeration disc rotating apparatus, which includes: a drive mechanism and a rotating member; the rotating piece is connected with the aeration disc and is relatively fixed with the aeration disc; the rotating piece is rotatably connected with the ventilating pipe and is provided with an airflow channel, the air inlet end of the airflow channel is communicated with the ventilating pipe, and the air outlet end of the airflow channel is communicated with the aeration hole of the aeration disc; the driving mechanism is used for driving the rotating piece to rotate so that the rotating piece drives the aeration disc to rotate. Through above-mentioned technical scheme, the aeration dish rotating device that this disclosure provided can stir the long-pending mud in bottom to improve aeration efficiency to a certain extent.
Description
Technical Field
The disclosure relates to the technical field of sewage treatment equipment, in particular to an aeration disc rotating device.
Background
The Anaerobic-Anoxic-aerobic (AAO) biological sewage treatment process is the most commonly used method for domestic sewage treatment at present, organic pollutants in sewage are mainly removed in an aerobic stage, and the key link of the stage is to perform aeration through an aeration disc so as to increase the oxygen content in the sewage and promote the rapid growth of aerobic bacteria so as to rapidly remove organic matters in the sewage.
Specifically, the aeration dish has the aeration hole, and aeration hole and breather pipe intercommunication, the gaseous of breather pipe provide flow through the aeration hole, produce the microbubble, form the turbulent flow of water to reach the purpose that fuses the oxygen in the air into aquatic, increased dissolved oxygen content in the sewage, improved the efficiency of getting rid of organic pollutant by aerobic microorganism.
However, the existing aeration disc is easy to form sludge, and microorganisms in the sludge cannot be in full contact with sewage, so that an anaerobic environment is formed at the bottom of the aeration disc, and the biochemical treatment effect of the sewage is affected.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides an aeration disk rotating apparatus.
The present disclosure provides an aeration disc rotating apparatus, wherein the aeration disc rotating apparatus includes: a drive mechanism and a rotating member; the rotating piece is connected with the aeration disc and is relatively fixed with the aeration disc; the rotating piece is rotatably connected with the ventilating pipe and is provided with an airflow channel, the air inlet end of the airflow channel is communicated with the ventilating pipe, and the air outlet end of the airflow channel is communicated with the aeration hole of the aeration disc; the driving mechanism is used for driving the rotating piece to rotate so that the rotating piece drives the aeration disc to rotate.
Optionally, a rotary bearing is arranged on the vent pipe, an outer ring of the rotary bearing is relatively fixed with the vent pipe, and an inner ring of the rotary bearing is relatively fixed with an outer wall of the rotary member.
Alternatively, the rotating member is a hollow rotating shaft with two open ends, and the inner cavity of the rotating shaft is formed into the airflow channel.
Optionally, the vent tube has an adapter through which the rotatable member communicates with the vent tube; and the outer ring of the rotating bearing is relatively fixed with the inner wall of the adapter.
Optionally, the outer ring of the rotating bearing and the inner wall of the adapter are arranged in a sealing manner; and the inner ring of the rotating bearing and the outer wall of the rotating part are arranged in a sealing way.
Optionally, the driving mechanism comprises a driving motor, a first gear, a transmission belt and a second gear; the first gear is connected with an output shaft of the driving motor, and the second gear is connected with the rotating part and is relatively fixed with the rotating part; the transmission belt is sleeved on the first gear and the second gear, and the central axis of the first gear is parallel to the central axis of the second gear; the driving motor is used for driving the first gear to rotate and driving the transmission belt to transmit, so that the second gear drives the rotating piece to rotate under the driving of the transmission belt.
Optionally, an output shaft of the driving motor is connected to a transmission rod, one end of the transmission rod is fixed to the output shaft, and the first gear is disposed at the other end of the transmission rod.
Optionally, an output shaft of the driving motor is further provided with a speed reducer, and the speed reducer is used for controlling the rotation speed of the driving motor.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages: through setting up actuating mechanism and rotation piece, make rotation piece and aeration dish relatively fixed, make rotation piece rotate with the breather pipe and be connected, and rotation piece has airflow channel, airflow channel's inlet end and breather pipe intercommunication, airflow channel's exhaust end and aeration dish's aeration hole intercommunication, when using, rotate a rotation through actuating mechanism drive, because rotate a piece and aeration dish relatively fixed, it is connected with the breather pipe rotation to rotate a piece, therefore, it can drive aeration dish rotation to rotate when rotating a piece, aeration dish can form the circulation around it at the pivoted in-process, thereby to a certain extent carry out intensive mixing to sewage, make the microbubble that aeration dish produced abundanter and the diffusion even, thereby the mass transfer rate of aquatic oxygen has been improved. In addition, the aeration disc can also stir the bottom accumulated mud in the rotating process, so that the accumulated mud can flow along with water, microorganisms in the accumulated mud can be fully contacted with sewage, the generation of an anaerobic environment can be avoided to a certain extent, and the sludge utilization rate of a biochemical area and the removal effect of organic pollutants are improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural view of an aeration disc rotating device according to an embodiment of the present disclosure;
fig. 2 is another schematic structural diagram of an aeration disc rotating device according to an embodiment of the present disclosure.
Wherein, 1-a driving mechanism; 11-a drive motor; 12-a first gear; 13-a drive belt; 14-a second gear; 15-a transmission rod; 2-a rotating member; 3-a rotating bearing; 4-an aeration disc; 5-a breather pipe; 51-a crossover joint; 6-speed reducer.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Referring to fig. 1, an embodiment of the present disclosure provides an aeration disc rotating apparatus, wherein the aeration disc rotating apparatus includes: a drive mechanism 1 and a rotating member 2; the rotating piece 2 is connected with the aeration disc 4 and is relatively fixed with the aeration disc 4; the rotating piece 2 is rotatably connected with the ventilating pipe 5, the rotating piece 2 is provided with an airflow channel, the air inlet end of the airflow channel is communicated with the ventilating pipe 5, and the air outlet end of the airflow channel is communicated with the aeration holes of the aeration disc 4; the driving mechanism 1 is used for driving the rotating part 2 to rotate, so that the rotating part 2 drives the aeration disc 4 to rotate.
The aeration disk 4 may be, for example, a disk aerator.
In this embodiment, through setting up actuating mechanism 1 and rotation piece 2, make rotation piece 2 and aeration dish 4 relatively fixed, make rotation piece 2 and breather pipe 5 rotate and be connected, and rotation piece 2 has airflow channel, airflow channel's inlet end and breather pipe 5 intercommunication, airflow channel's exhaust end and aeration dish 4's aeration hole intercommunication, when using, rotate piece 2 rotation through actuating mechanism 1 drive, because rotation piece 2 and aeration dish 4 relatively fixed, rotation piece 2 rotates with breather pipe 5 and is connected, therefore, rotation piece 2 can drive aeration dish 4 and rotate when rotating, aeration dish 4 can form the circulation around it at the pivoted in-process, thereby carry out intensive stirring to sewage to a certain extent, make the microbubble that aeration dish 4 produced abundanter and the diffusion even, thereby the mass transfer rate of aquatic oxygen has been improved. In addition, the aeration disc 4 can also stir the bottom sludge in the rotating process, so that the sludge can flow along with water, microorganisms in the sludge can be fully contacted with sewage, the generation of an anaerobic environment is avoided to a certain extent, and the sludge utilization rate of a biochemical area is improved.
Wherein, the theory of operation of aeration dish is supporting air-blower and corresponding pipe-line system, through aeration hole on aeration dish surface, produces a large amount of microbubbles to improve oxygen transfer efficiency, with this increase aquatic dissolved oxygen content. Therefore, the aeration disc 4 rotates in the aeration process, so that aeration bubbles are enriched and diffused uniformly, and the blockage phenomenon of aeration holes caused by sludge accumulation can be avoided to a certain extent, thereby improving the aeration efficiency of the aeration disc.
In addition, when in use, the rotating piece 2 and the aeration disc 4 can be fixedly connected by welding, gluing or the like. Certainly, for convenient connection, rotate piece 2 and aeration dish 4 and can also link together through modes such as bayonet socket or spline detachably, as long as can make rotate piece 2 and aeration dish 4 relatively fixed can, the installation is dismantled conveniently, is convenient for change.
In the present embodiment, referring to fig. 1, for the convenience of connection and the rotation of the rotation member 2 relative to the ventilation pipe 5, the ventilation pipe 5 is provided with a rotation bearing 3, the outer ring of the rotation bearing 3 is fixed relative to the ventilation pipe 5, and the inner ring of the rotation bearing 3 is fixed relative to the outer wall of the rotation member 2.
The rotary bearing 3 may be directly disposed on a suitable position of the vent pipe 5, for example, an outer ring of the rotary bearing 3 is fixed relative to an inner wall of the vent pipe 5, for example, the outer ring of the rotary bearing 3 is in interference fit with the inner wall of the vent pipe 5. The rotor 2 can then be connected to the ventilation pipe 5 via a rotary bearing 3 on the ventilation pipe 5, for example, the inner ring of the rotary bearing 3 is fixed relative to the outer wall of the rotor 2. During the specific use, actuating mechanism 1 drive rotates 2 rotations, because rolling bearing 3's outer lane and breather pipe 5 relatively fixed, rolling bearing 3's inner circle and the outer wall relatively fixed who rotates 2, so rotate 2 when the drive of actuating mechanism 1 rotates, rolling bearing 3's outer lane is motionless for breather pipe 5, it can drive rolling bearing 3's inner circle to rotate together to rotate 2, thereby realize rotating 2 and be connected with the rotation of breather pipe 5, make and rotate 2 more smooth and easy for the rotation of breather pipe 5.
In some embodiments, the rotating member 2 can be further connected with the ventilation pipe 5 in a threaded manner, and at the same time, the driving mechanism 1 can drive the rotating member 2 to rotate in a forward direction or in a reverse direction by forward rotation or reverse rotation, and the driving mechanism 1 can drive the rotating member 2 to rotate in a reverse direction by reverse rotation or forward rotation, so that the rotating member 2 can be continuously switched between forward rotation and reverse rotation by repeatedly changing the rotation direction of the driving mechanism 1, and the rotating member 2 can drive the aeration disc 4 to rotate in a forward direction or reverse rotation manner, so that the aeration disc 4 can stir sewage in the aeration process, and the mass transfer rate of oxygen in water can be improved.
In this embodiment, in order to provide air or oxygen input by a blower or the like to the aeration disc 4 through the ventilation pipe 5, the rotating member 2 is a hollow rotating shaft with two open ends, and an inner cavity of the rotating shaft is formed as an air flow channel. In this way, the air or oxygen in the ventilation pipe 5 can directly enter the air flow channel from the opening of the rotating member 2 facing the ventilation pipe 5, and then the air or oxygen in the air flow channel is discharged to the aeration disc 4 from the opening of the rotating member 2 facing the aeration disc 4, and then discharged through aeration in the aeration holes of the aeration disc 4.
Further, referring to fig. 1, for convenience of connection, the breather pipe 5 has a conversion joint 51, and the rotation member 2 communicates with the breather pipe 5 through the conversion joint 51; the outer race of the rotary bearing 3 is fixed relative to the inner wall of the adapter 51.
When in use, the adapter 51 and the air pipe 5 can be integrated, and of course, the adapter 51 and the air pipe 5 can be detachably connected together by means of a bayonet or a bolt.
Generally, in sewage treatment system, the amount of use of breather pipe 5 is great, and the length of every breather pipe 5 is fixed limited, consequently need to couple together a large amount of breather pipes to satisfy sewage treatment's construction requirement, so can be in the same place the convenient connection of many breather pipes 5 through crossover sub 51, the installation is changed conveniently, simple structure connects reliably.
In addition, the adaptor 51 may be an adaptor 51 having a multi-end communication joint, and the rotary bearing 3 may be provided as necessary at a joint other than the joint of the adaptor 51 communicating with the aeration pipe 5 to connect the aeration discs through the rotary member 2, so that the adaptor 51 can be conveniently implemented if a plurality of aeration discs are required to be intensively aerated in the underwater local area.
Of course, referring to fig. 1 and 2, the adaptor 51 is a three-way adaptor, which can also realize the connection between a plurality of aeration discs 4, and the adaptor 51 can realize the interval arrangement between a plurality of aeration discs 4, and has simple structure and convenient installation and replacement.
Further, the outer ring of the rotating bearing 3 is arranged in a sealing way with the inner wall of the conversion joint 51; the inner ring of the rotating bearing 3 is arranged in a sealing way with the outer wall of the rotating element 2. Thereby, the rotation resistance between the rotation member 2 and the adapter 51 is smaller, and the sealing property is better.
The space between the outer ring of the rotating bearing 3 and the inner wall of the adapter 51 may be sealed by a sealing ring, or may be sealed by an oil seal or a sealant. Of course, the inner ring of the rotating bearing 3 and the outer wall of the rotating part 2 can be sealed by a sealing ring, an oil seal or a sealant, and the like, so that the sealing is firm, safe and reliable.
In the present embodiment, the drive mechanism 1 includes a drive motor 11, a first gear 12, a transmission belt 13, and a second gear 14; the first gear 12 is connected with an output shaft of the driving motor 11, and the second gear 14 is connected with the rotating part 2 and is fixed relative to the rotating part 2; the transmission belt 13 is sleeved on the first gear 12 and the second gear 14, and the central axis of the first gear 12 is parallel to the central axis of the second gear 14; the driving motor 11 is used for driving the first gear 12 to rotate and driving the transmission belt 13 to transmit, so that the second gear 14 drives the rotating part 2 to rotate under the driving of the transmission belt 13.
When the device is used, the driving motor 11 is started to rotate forwards or backwards, the first gear 12 is driven to rotate by the forward rotation or the reverse rotation of the driving motor 11, the transmission belt 13 is driven to rotate in the same direction by the rotation of the first gear 12, the transmission belt 13 further drives the second gear 14 to rotate in the same direction by the rotation of the transmission belt 13, namely, the rotating force of the first gear 12 is transmitted to the second gear 14 through the transmission belt 13 so that the second gear 14 rotates in the same direction, the second gear 14 drives the rotating part 2 to rotate, the rotating part 2 rotates and then drives the aeration disc 4 to rotate, and the aeration disc 4 can form circulation around the aeration disc in the rotating process, so that bottom sewage is fully stirred to a certain extent, meanwhile, micro bubbles generated by the aeration disc 4 are richer and are uniformly diffused, and the mass transfer rate of oxygen in water is improved. In addition, the aeration disc 4 can also stir the bottom sludge in the rotating process, so that the sludge can flow along with water, microorganisms in the sludge can be fully contacted with sewage, the generation of an anaerobic environment is avoided to a certain extent, and the sludge utilization rate of a biochemical area is improved.
In addition, when the transmission belt 13 transmits between the first gear 12 and the second gear 14, the stirring effect on the water body can be achieved, the content of dissolved oxygen in water is further improved, and the improvement of the sewage treatment efficiency is facilitated.
The driving motor 11 may be a stepping motor or a servo motor.
Of course, in some embodiments, the driving motor 11 may also be a linear motor, in which case, the driving mechanism includes a linear motor, a rack and a gear, the rack is connected to the output shaft of the linear motor, the gear is disposed on the rotating member, and the rack is engaged with the gear.
During specific implementation, the linear motor drives the rack to move forward or reversely, and the rack is meshed with the gear for transmission, so that the rack drives the gear to rotate reversely, and the rotating part rotates reversely; the linear motor drives the rack to move reversely in a reverse direction or in a forward direction, and the rack is meshed with the gear for transmission, so that the rack drives the gear to rotate in a forward direction, and the forward rotation of the rotating part is realized; in summary, the rotation of the rotating member in the forward direction or the reverse direction drives the rotation of the aeration disc.
When the underwater water-proof device is used specifically, the driving motor 11 can be subjected to water-proof treatment, and the requirement on the underwater use level is met. At the moment, the driving motor 11 can be arranged at a proper position under water and is connected with the aeration disc 4 under water, so that the space utilization rate is high, and the layout is reasonable. Meanwhile, the driving motor 11 can generate vibration with a certain frequency during operation, and can also play a role in stirring the water body, so that the content of dissolved oxygen in the water is improved to a certain extent, and the sewage treatment efficiency is improved. Of course, the driving motor 11 may also be provided outside the sewage treatment tank, for example, on the ground outside the sewage treatment apparatus; it is also possible to provide a fixing frame above the sewage treatment apparatus and then to provide the driving motor 11 on the fixing frame.
Further, referring to fig. 1, in the present embodiment, in order to achieve flexible installation and improve the application range of the aeration disc rotating apparatus provided by the present disclosure, a transmission rod 15 is connected to the output shaft of the driving motor 11, one end of the transmission rod 15 is fixed relative to the output shaft, and the first gear 12 is disposed at the other end of the transmission rod 15, so that the installation position of the driving motor 11 is more flexible and can keep a proper distance from the aeration disc 4, thereby avoiding affecting the rotation of the aeration disc 4, providing a larger rotating space for the aeration disc 4, and providing a larger effective flowing space for the circulating water body formed around the aeration disc 4 during the rotation process.
Further, a speed reducer 6 is further disposed on an output shaft of the driving motor 11, the speed reducer 6 is used for controlling the rotation speed of the driving motor 11, and the speed reducer 6 is used for controlling the rotation speed of the driving motor 11. The rotational speed of driving motor 11 can be adjusted to speed reducer 6, and then can adjust the rotational frequency who rotates piece 2 through first gear 12, driving belt 13 and second gear 14 to can be according to the organic pollutant concentration of good oxygen district and the dissolved oxygen concentration condition, adjust the rotational frequency of aeration dish 4 in good time, energy-concerving and environment-protective, avoid the energy extravagant.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An aeration disk rotating device is characterized by comprising: a drive mechanism (1) and a rotor (2);
the rotating piece (2) is connected with the aeration disc (4) and is relatively fixed with the aeration disc (4); the rotating piece (2) is rotatably connected with the ventilating pipe (5), the rotating piece (2) is provided with an airflow channel, the air inlet end of the airflow channel is communicated with the ventilating pipe (5), and the air outlet end of the airflow channel is communicated with the aeration hole of the aeration disc (4);
the driving mechanism (1) is used for driving the rotating piece (2) to rotate, so that the rotating piece (2) drives the aeration disc (4) to rotate.
2. The aeration disc rotating device according to claim 1, wherein the aeration pipe (5) is provided with a rotating bearing (3), an outer ring of the rotating bearing (3) is fixed relative to the aeration pipe (5), and an inner ring of the rotating bearing (3) is fixed relative to an outer wall of the rotating member (2).
3. The aeration disc rotating apparatus according to claim 2, wherein the rotating member (2) is a hollow rotating shaft with both ends open, and the inner cavity of the rotating shaft is formed as the air flow passage.
4. The aeration disc rotating apparatus according to claim 2, wherein the aeration pipe (5) has a switching joint (51), and the rotating member (2) communicates with the aeration pipe (5) through the switching joint (51); and the outer ring of the rotating bearing (3) is relatively fixed with the inner wall of the conversion joint (51).
5. The aeration disc rotating apparatus according to claim 4, wherein an outer ring of the rotating bearing (3) is sealingly provided with an inner wall of the adapter (51);
the inner ring of the rotating bearing (3) and the outer wall of the rotating part (2) are arranged in a sealing mode.
6. The aeration panel rotating apparatus according to any one of claims 1 to 5, wherein the driving mechanism (1) comprises a driving motor (11), a first gear (12), a transmission belt (13), and a second gear (14);
the first gear (12) is connected with an output shaft of the driving motor (11), and the second gear (14) is connected with the rotating part (2) and is relatively fixed with the rotating part (2); the transmission belt (13) is sleeved on the first gear (12) and the second gear (14), and the central axis of the first gear (12) is parallel to the central axis of the second gear (14);
the driving motor (11) is used for driving the first gear (12) to rotate and driving the transmission belt (13) to transmit, so that the second gear (14) is driven by the transmission belt (13) to drive the rotating piece (2) to rotate.
7. The aeration disc rotating device according to claim 6, wherein a transmission rod (15) is connected to an output shaft of the driving motor (11), one end of the transmission rod (15) is fixed relative to the output shaft, and the first gear (12) is arranged at the other end of the transmission rod (15).
8. The aeration disc rotating device according to claim 6, wherein the output shaft of the driving motor (11) is further provided with a speed reducer (6), and the speed reducer (6) is used for controlling the rotating speed of the driving motor (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786430.8U CN213265905U (en) | 2020-08-24 | 2020-08-24 | Aeration disc rotating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021786430.8U CN213265905U (en) | 2020-08-24 | 2020-08-24 | Aeration disc rotating device |
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| CN213265905U true CN213265905U (en) | 2021-05-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113925016A (en) * | 2021-10-26 | 2022-01-14 | 鑫磊压缩机股份有限公司 | Oxygen-supplying reliable oxygenation device |
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2020
- 2020-08-24 CN CN202021786430.8U patent/CN213265905U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113925016A (en) * | 2021-10-26 | 2022-01-14 | 鑫磊压缩机股份有限公司 | Oxygen-supplying reliable oxygenation device |
| CN113925016B (en) * | 2021-10-26 | 2023-09-29 | 鑫磊压缩机股份有限公司 | Oxygen-increasing device with reliable oxygen supply |
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