CN217354662U - Air inlet silencing box for oxygen generator - Google Patents
Air inlet silencing box for oxygen generator Download PDFInfo
- Publication number
- CN217354662U CN217354662U CN202221884157.1U CN202221884157U CN217354662U CN 217354662 U CN217354662 U CN 217354662U CN 202221884157 U CN202221884157 U CN 202221884157U CN 217354662 U CN217354662 U CN 217354662U
- Authority
- CN
- China
- Prior art keywords
- air
- air inlet
- nozzle
- guide hole
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The utility model discloses an air inlet silencing box for an oxygen generator, which comprises a main box body, a box cover, an air inlet nozzle and an air outlet nozzle, wherein the main box body is a cuboid shell structure with a large side opening, and the box cover is sealed and buckled on the large side opening; set up the baffle of two parallels in the main box body and cut apart into first cushion chamber, second cushion chamber and third cushion chamber with the inner chamber from bottom to top, the suction nozzle sets up on the main box body top side and the inboard communicates through the long tube first cushion chamber, set up the hole of the adjacent cavity of intercommunication on the baffle, set up on the roof of third cushion chamber the suction nozzle. The utility model is used for the hush box that admits air of oxygenerator can cushion the air current that admits air, reduces the noise of admitting air.
Description
Technical Field
The utility model relates to an oxygenerator annex technical field especially relates to a hush box that admits air for oxygenerator.
Background
Oxygen therapy and oxygen health care are to improve the physiological and biochemical internal environments of human body by supplying oxygen and promote the virtuous cycle of metabolic process so as to achieve the purposes of treating diseases, relieving symptoms, promoting recovery, preventing pathological changes and promoting health. Clinical practice proves that the oxygen therapy has an effective treatment effect on acute and chronic ischemic-hypoxic diseases of various clinical departments and secondary diseases caused by hypoxia by using a unique treatment mechanism, and the generation of the oxygen generator for medical treatment and health care provides convenience for oxygen therapy and oxygen health care.
Most oxygen generators adopt molecular sieves to separate nitrogen and oxygen, when a compressor works, air inlet and exhaust are easy to generate large noise, and a quiet and comfortable use environment cannot be provided when a user carries out oxygen therapy or oxygen health care. The silencer is arranged on the exhaust pipeline of nitrogen to remove exhaust noise, and the noise reduction cotton is attached to the oxygen generator to reduce the working noise of the compressor. However, for a high-power oxygen generator, due to the fact that the air inflow is large, the air inflow time is short, the volumes of air inflow equipment and compressor equipment are limited, the air flow speed and density are high during air inflow, air inflow impact and air inflow vortex are generated, and noise is large.
Therefore, it is necessary to develop an air inlet silencing box for an oxygen generator aiming at the defects.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hush box that admits air for oxygenerator can cushion the air current that admits air, reduces the noise of admitting air.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model relates to an air inlet silencing box for an oxygen generator, which comprises a main box body, a box cover, an air inlet nozzle and an air outlet nozzle, wherein the main box body is a cuboid shell structure with a large side opening, and the box cover is sealed and buckled on the large side opening; set up the baffle of two parallels in the main box body and cut apart into first cushion chamber, second cushion chamber and third cushion chamber with the inner chamber from bottom to top, the suction nozzle sets up on the main box body top side and the inboard communicates through the long tube first cushion chamber, set up the hole of the adjacent cavity of intercommunication on the baffle, set up on the roof of third cushion chamber the suction nozzle.
Further, the main box body and the box cover are connected together through ultrasonic welding; two bolt through hole seats are arranged in the cavity in the middle of the main box body, and bolt through holes are formed in corresponding positions on the box cover.
Furthermore, a first sealing ring groove is formed in the side wall of the main box body and the partition plate towards the top surface of the box cover, and a second sealing ring groove is formed in the top surface of the bolt hole seat; and the box cover is provided with a complete sealing bulge at the corresponding position of the first sealing ring groove and the second sealing ring groove.
Furthermore, the air inlet nozzles comprise a first air inlet nozzle and a second air inlet nozzle, the first air inlet nozzle and the second air inlet nozzle are conical in shape and are vertically arranged, and the inner ends of the first air inlet nozzle and the second air inlet nozzle are communicated with the air inlet end of the long pipe.
Further, go out the air nozzle and include first air outlet nozzle and second air outlet nozzle, first air outlet nozzle and second air outlet nozzle appearance are cone shape and the perpendicular setting of the two, the inner of first air outlet nozzle and second air outlet nozzle all communicates third cushion chamber top.
The first air guide hole seat is arranged on the partition plate between the first buffer cavity and the second buffer cavity, and is provided with a communicating hole and is coaxially communicated with the hole of the partition plate; the second air guide hole seat is arranged on the partition plate between the second buffer cavity and the third buffer cavity, is provided with a communicating hole and is coaxially communicated with the hole of the partition plate; the first air guide hole seat and the second air guide hole seat are arranged in a staggered mode.
Furthermore, the main box body is provided with a first process groove at the bottom of the long pipe, and the bottoms of the first air guide hole seat and the second air guide hole seat are respectively provided with a second process groove.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model relates to a hush box that admits air for oxygenerator, through the sealed cavity that the sealed lock of lid formed on main box body, convenient to detach maintains, clears up when being favorable to overhauing. Through the leading-in clean air of suction nozzle passes through long tube, first cushion chamber, second cushion chamber and third cushion chamber, and the air current velocity of flow is cushioned in many places, changes the air current direction, reduces the vortex, and then has effectively reduced the impact velocity that admits air, noise reduction. The utility model is used for the hush box that admits air of oxygenerator can cushion the air current that admits air, reduces the noise of admitting air.
In addition, through the setting of seal ring groove one, can prevent gas leakage and the air leakage between the adjacent cavity, through the setting of seal ring groove two, can prevent that threaded connection department from leaking gas. Through the corresponding arrangement of the sealing bulges and the sealing ring grooves, a complete sealing line is formed, and each chamber can be sealed better. The first air inlet nozzle and the second air inlet nozzle are used as the air inlet nozzle, the first air outlet nozzle and the second air outlet nozzle are used as the air outlet nozzle, one of the air inlet nozzle and the air outlet nozzle can be reasonably selected according to the specific conditions of installation spaces in oxygenerators of different models, and the other one of the air inlet nozzle and the air outlet nozzle is blocked. Therefore, the method can be applied to different models, and the application range is expanded. The wall thickness of the communication hole can be increased through the arrangement of the first air guide hole seat and the second air guide hole seat, the structural strength is increased, and vibration cannot be caused when high-speed airflow passes through the communication hole; the first air guide hole seat and the second air guide hole seat are arranged in a staggered mode, so that an air path channel formed between the two holes is longest as much as possible, and therefore air is fully buffered in the second buffer cavity; through the arrangement of the first process groove and the second process groove, the connection strength between the long pipe and the air guide hole seat and the bottom plate is increased, and the long pipe and the air guide hole seat can be used as a positioning groove according to the actual condition of the installation seat plate.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a schematic view of the three-dimensional structure of the air intake silencing box for the oxygen generator of the present invention;
FIG. 2 is a schematic view of another angle of the air intake silencing box for the oxygen generator of the present invention;
FIG. 3 is a schematic view of the main box body of the present invention;
fig. 4 is a schematic view of the main box body of the present invention showing another three-dimensional angle structure.
Description of reference numerals: 1. a main box body; 101. a first sealing ring groove; 102. a first process groove; 103. a second process tank; 104. a bolt through hole seat; 1041. a second sealing ring groove; 2. a box cover; 201. passing a hole through a bolt; 3. a first intake nozzle; 4. a second inlet nozzle; 5. a long tube; 6. a first buffer chamber; 7. a second buffer chamber; 8. a third buffer chamber; 9. a first air outlet nozzle; 10. a second air outlet nozzle; 11. a first air guide hole seat; 12. and a second air guide hole seat.
Detailed Description
The core of the utility model is to provide an air intake silencing box for an oxygen generator, which can buffer the air intake flow and reduce the air intake noise.
In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to the attached drawings, fig. 1 is a schematic three-dimensional structure diagram of an air inlet silencing box for an oxygen generator of the present invention; FIG. 2 is a schematic view of another angle of the air intake silencing box for the oxygen generator of the present invention; FIG. 3 is a schematic view of the main box body of the present invention; fig. 4 is a schematic view of another three-dimensional angle structure of the main box of the present invention.
In a specific embodiment, as shown in fig. 1 to 4, an air intake silencing box for an oxygen generator comprises a main box body 1, a box cover 2, an air inlet nozzle and an air outlet nozzle, wherein the main box body 1 is a cuboid shell structure with a large side surface opening, and the box cover 2 is fastened on the large side surface opening in a sealing manner to form a sealing cavity. Set up two parallel baffles in the main box body 1 and split into first cushion chamber 6, second cushion chamber 7 and third cushion chamber 8 with the inner chamber from bottom to top, the suction nozzle sets up on 1 side of the top of the main box body and the inboard communicates first cushion chamber 6 through long tube 5, sets up the hole of the adjacent cavity of intercommunication on the baffle, sets up on the roof of third cushion chamber 8 the discharge nozzle. The air inlet nozzle is communicated with the air inlet filter through a pipeline, and the air outlet nozzle is communicated with the air inlet of the air compressor through a pipeline.
Through the sealed cavity that the sealed lock of lid 2 formed on main box body 1, convenient to detach maintains, is favorable to clearing up when overhauing. Through the leading-in clean air of suction nozzle passes through long tube 5, first cushion chamber 6, second cushion chamber 7 and third cushion chamber 8, and the air current velocity of flow is buffered in many places, changes the air current direction, reduces the vortex, and then has effectively reduced the impact velocity that admits air, noise reduction. The utility model is used for the hush box that admits air of oxygenerator can cushion the air current that admits air, reduces the noise of admitting air.
The utility model discloses an in a specific embodiment, as shown in fig. 1 ~ 4, main box body 1 and lid 2 pass through ultrasonic bonding together, and the welding department should be sealed well, guarantees the leakproofness in the box body. Two bolt through hole seats 104 are arranged in the cavity in the middle of the main box body 1, and bolt through holes 201 are arranged at corresponding positions on the box cover 2. And long bolts are used for penetrating through the bolt through holes 201 and the bolt through hole seats 104 to be connected to the frame of the oxygen generator.
Specifically, as shown in fig. 3 and 4, the side wall of the main box body 1 and the top surface of the partition plate facing the box cover 2 are provided with a first sealing ring groove 101, and the top surface of the bolt hole seat 104 is provided with a second sealing ring groove 1041. The box cover 2 is provided with a complete sealing bulge at the corresponding position of the first sealing ring groove 101 and the second sealing ring groove 1041.
Obviously, the main box body 1 and the box cover 2 can be isolated from each other and prevent air leakage through a sealing gasket or a sealing ring. Similar structural deformation modes all fall into the protection scope of the utility model.
Through the setting of seal ring groove one 101, can prevent gas leakage and the air leakage between the adjacent chamber, through the setting of seal ring groove two 1041, can prevent threaded connection department gas leakage. Through the corresponding setting of sealed arch and seal ring groove, form complete sealing line, each cavity of sealed that can be better.
In a specific embodiment of the present invention, as shown in fig. 1 to 4, the air intake nozzle includes a first air intake nozzle 3 and a second air intake nozzle 4, the shape of the first air intake nozzle 3 and the second air intake nozzle 4 is conical shape and the two are vertically arranged, and the inner ends of the first air intake nozzle 3 and the second air intake nozzle 4 are all connected to the air inlet end of the long tube 5.
Particularly, the gas outlet nozzle comprises a first gas outlet nozzle 9 and a second gas outlet nozzle 10, the shapes of the first gas outlet nozzle 9 and the second gas outlet nozzle 10 are both conical shapes and the two are vertically arranged, and the inner ends of the first gas outlet nozzle 9 and the second gas outlet nozzle 10 are communicated with the top of the third buffer cavity 8.
One of the air inlet nozzles and the air outlet nozzle can be reasonably selected according to the specific conditions of installation spaces in oxygenerators of different models, and the other one is blocked. Therefore, the method can be applied to different models, and the application range is expanded.
In a specific embodiment of the present invention, as shown in fig. 2 to 4, the air intake silencing box for oxygen generator of the present invention further comprises a first air duct seat 11 and a second air duct seat 12, wherein the first air duct seat 11 is disposed on the partition board between the first buffer chamber 6 and the second buffer chamber 7, and the first air duct seat 11 is disposed with the communication hole and coaxially communicated with the hole on the partition board. The second air guide hole seat 12 is arranged on the partition board between the second buffer cavity 7 and the third buffer cavity 8, and the second air guide hole seat 12 is provided with a communicating hole and is coaxially communicated with the hole on the partition board. The first air guide hole seat 11 and the second air guide hole seat 12 are arranged in a staggered mode, a hole entering the second buffer cavity 7 and a hole entering the third buffer cavity 8 are arranged in a staggered mode, the air path channel formed between the two holes is made to be the longest as far as possible, and therefore air is fully buffered in the second buffer cavity 7.
Specifically, as shown in fig. 2, the main box body 1 is provided with a first process groove 102 at the bottom of the long tube 5, and a second process groove 103 is respectively provided at the bottoms of the first air guide hole seat 11 and the second air guide hole seat 12. The first process groove 102 and the second process groove 103 can not only increase the connection strength between the long pipe 5 and the air guide hole seat and the bottom plate, but also can be used as positioning grooves according to the actual situation of the installation seat plate.
Through the arrangement of the first air guide hole seat 11 and the second air guide hole seat 12, the wall thickness of the communication hole can be increased, the structural strength is increased, and vibration cannot be caused when high-speed air flows through the communication hole; the first air guide hole seat 11 and the second air guide hole seat 12 are arranged in a staggered mode, so that an air path channel formed between the two holes is longest as much as possible, and therefore air is fully buffered in the second buffer cavity 7; through the arrangement of the first process groove 102 and the second process groove, the connection strength between the long pipe 5 and the air guide hole seat and the bottom plate is increased, and the long pipe and the air guide hole seat can be used as a positioning groove according to the actual situation of installing the seat plate.
The utility model relates to an in the embodiment the amortization box during operation that admits air for oxygenerator: one of the first air inlet nozzle 3 and the second air inlet nozzle 4 is selected as an air inlet pipe connector according to the actual installation situation, one of the first air outlet nozzle 9 and the second air outlet nozzle 10 is selected as an air outlet pipe connector, and the other one is blocked. The first air inlet nozzle 3 or the second air inlet nozzle 4 is introduced to enter the first buffer cavity 6 through the long pipe 5, then enters the second buffer cavity 7 through the first air guide hole seat 11, and finally enters the third buffer cavity 8 through the second air guide hole seat 12. Finally, the mild clean air is conveyed to the air inlet of the air compressor through a pipeline of the first air outlet nozzle 9 or the second air outlet nozzle 10.
The utility model discloses a hush box that admits air for oxygenerator through the sealed cavity that the sealed lock of lid 2 formed on main box body 1, convenient to detach maintains, clears up when being favorable to overhauing. Through the leading-in clean air of suction nozzle passes through long tube 5, first cushion chamber 6, second cushion chamber 7 and third cushion chamber 8, and the air current velocity of buffering in many places changes the air current direction, reduces the vortex, and then has effectively reduced the impact velocity that admits air, noise reduction. The utility model is used for the hush box that admits air of oxygenerator can cushion the air current that admits air, reduces the noise of admitting air. In addition, through the setting of seal ring groove one 101, can prevent gas leakage and the air leakage between the adjacent chamber, through the setting of seal ring groove two 1041, can prevent threaded connection department gas leakage. Through the corresponding setting of sealed arch and seal ring groove, form complete sealing line, each cavity of sealed that can be better. Through first suction nozzle 3 and second suction nozzle 4 conduct the suction nozzle, first play gas nozzle 9 and second play gas nozzle 10 conduct go out the gas nozzle, can rationally select one of them suction nozzle and play gas nozzle according to installation space's particular case in the oxygenerator of different models, another blocks up to die. Therefore, the method can be applied to different models, and the application range is expanded. Through the arrangement of the first air guide hole seat 11 and the second air guide hole seat 12, the wall thickness of the communication hole can be increased, the structural strength is increased, and vibration cannot be caused when high-speed air flows through the communication hole; the first gas guide hole seat 11 and the second gas guide hole seat 12 are arranged in a staggered manner, so that a gas path channel formed between the two holes is longest as much as possible, and gas is fully buffered in the second buffer cavity 7; through the arrangement of the first process groove 102 and the second process groove, the connection strength between the long pipe 5 and the air guide hole seat and the bottom plate is increased, and the long pipe and the air guide hole seat can be used as a positioning groove according to the actual situation of installing the seat plate.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (7)
1. The utility model provides a hush box that admits air for oxygenerator which characterized in that: the air inlet and outlet box comprises a main box body (1), a box cover (2), an air inlet nozzle and an air outlet nozzle, wherein the main box body (1) is of a cuboid shell structure with a large side surface opening, and the box cover (2) is hermetically buckled on the large side surface opening; set up the baffle of two parallels in the main box body (1) and split into first cushion chamber (6), second cushion chamber (7) and third cushion chamber (8) with the inner chamber from bottom to top, the suction nozzle sets up on the main box body (1) top side and the inboard communicates through long tube (5) first cushion chamber (6), set up the hole of the adjacent cavity of intercommunication on the baffle, set up on the roof of third cushion chamber (8) the discharge nozzle.
2. The intake silencer box for an oxygen generator according to claim 1, wherein: the main box body (1) and the box cover (2) are connected together through ultrasonic welding; two bolt through hole seats (104) are arranged in the cavity in the middle of the main box body (1), and bolt through holes (201) are formed in corresponding positions on the box cover (2).
3. The intake silencing box for oxygen generator according to claim 2, characterized in that: a first sealing ring groove (101) is formed in the side wall of the main box body (1) and the top surface of the partition plate, facing the box cover (2), and a second sealing ring groove (1041) is formed in the top surface of the bolt hole seat (104); and the box cover (2) is provided with a complete sealing bulge at the corresponding positions of the first sealing ring groove (101) and the second sealing ring groove (1041).
4. The intake silencer box for an oxygen generator according to claim 1, wherein: the air inlet nozzle comprises a first air inlet nozzle (3) and a second air inlet nozzle (4), the shapes of the first air inlet nozzle (3) and the second air inlet nozzle (4) are conical shapes, the first air inlet nozzle and the second air inlet nozzle are arranged vertically, and the inner ends of the first air inlet nozzle (3) and the second air inlet nozzle (4) are communicated with the air inlet end of the long pipe (5).
5. The intake silencing box for oxygen generator according to claim 4, wherein: go out the gas nozzle and include first gas nozzle (9) and second gas nozzle (10) of giving vent to anger, first gas nozzle (9) and second gas nozzle (10) appearance are cone shape and the perpendicular setting of the two, the inner of first gas nozzle (9) and second gas nozzle (10) all communicates third cushion chamber (8) top.
6. The intake silencing box for oxygen generator according to claim 1, characterized in that: the buffer structure is characterized by further comprising a first air guide hole seat (11) and a second air guide hole seat (12), wherein the first air guide hole seat (11) is arranged on the partition plate between the first buffer cavity (6) and the second buffer cavity (7), and the first air guide hole seat (11) is provided with a communicating hole and is coaxially communicated with the hole of the partition plate; the second air guide hole seat (12) is arranged on the partition plate between the second buffer cavity (7) and the third buffer cavity (8), and the second air guide hole seat (12) is provided with a communicating hole and is coaxially communicated with the hole of the partition plate; the first air guide hole seat (11) and the second air guide hole seat (12) are arranged in a staggered mode.
7. The intake silencing box for oxygen generator according to claim 6, wherein: the main box body (1) is provided with a first process groove (102) at the bottom of the long pipe (5), and a second process groove (103) is respectively formed at the bottoms of the first air guide hole seat (11) and the second air guide hole seat (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221884157.1U CN217354662U (en) | 2022-07-22 | 2022-07-22 | Air inlet silencing box for oxygen generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221884157.1U CN217354662U (en) | 2022-07-22 | 2022-07-22 | Air inlet silencing box for oxygen generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217354662U true CN217354662U (en) | 2022-09-02 |
Family
ID=83038972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221884157.1U Active CN217354662U (en) | 2022-07-22 | 2022-07-22 | Air inlet silencing box for oxygen generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217354662U (en) |
-
2022
- 2022-07-22 CN CN202221884157.1U patent/CN217354662U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203570402U (en) | Silencer for engineering machinery | |
| CN217354662U (en) | Air inlet silencing box for oxygen generator | |
| CN204609978U (en) | Motorcycle silencer | |
| CN216342385U (en) | Silencing device | |
| CN206617215U (en) | A kind of MPV exhaust silencer devices | |
| CN213454185U (en) | Noise reduction structure for air purifier and air purifier | |
| CN211924412U (en) | Air inlet silencing structure of air compressor | |
| CN209354350U (en) | Can noise reduction superstructure, compressor and air-conditioning | |
| CN220687592U (en) | Air filtering combination box for air compressor | |
| CN212318392U (en) | Air intake silencer of oxygen generator | |
| CN219680517U (en) | Fan module for cleaning machine and cleaning machine | |
| CN201354669Y (en) | Rear muffler for sedan | |
| CN217761474U (en) | Built-in cotton noise-reducing heat-insulating air inlet box and fan | |
| CN217185913U (en) | Noise-reduction air outlet structure of side air outlet type dust collector | |
| CN217323382U (en) | Casing subassembly and oxygenerator | |
| CN215062276U (en) | Main box of range hood and range hood | |
| CN218862854U (en) | Roots's fan air-out structure | |
| CN220885603U (en) | Dust collecting device and workstation | |
| CN209500209U (en) | A kind of exhaust muffling device for intermittent pneumatic therapeutic equipment | |
| CN217511519U (en) | Mute type nitrogen-oxygen separation equipment | |
| CN213540532U (en) | Silencer | |
| CN216878302U (en) | Two air intake clean system | |
| CN213899216U (en) | Inner exhaust pipe structure of refrigeration compressor | |
| CN217501925U (en) | Crankcase exhaust buffer cavity structure | |
| CN218441236U (en) | A silencing device that is used for high-and-medium-pressure container comprehensive exhaust to fall and makes an uproar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |