CN219932910U - Novel prevent inlet structure respirator - Google Patents
Novel prevent inlet structure respirator Download PDFInfo
- Publication number
- CN219932910U CN219932910U CN202320832893.0U CN202320832893U CN219932910U CN 219932910 U CN219932910 U CN 219932910U CN 202320832893 U CN202320832893 U CN 202320832893U CN 219932910 U CN219932910 U CN 219932910U
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- Prior art keywords
- respirator
- mouth
- connecting part
- blocking ring
- dust blocking
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- 230000000903 blocking effect Effects 0.000 claims abstract description 50
- 239000000428 dust Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 17
- 230000002265 prevention Effects 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 29
- 238000004891 communication Methods 0.000 claims description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model relates to a novel water inlet prevention structure respirator which at least comprises a respirator blocking cover and a respirator rear nozzle, wherein the respirator blocking cover is sleeved at the rear end of the respirator rear nozzle, an airflow channel is formed between the inner wall of the respirator blocking cover and the outer wall of the respirator rear nozzle, a breathing channel is arranged in the respirator rear nozzle, the rear end of the airflow channel is communicated with the breathing channel, and the front end of the airflow channel is communicated with the outside atmosphere; the rear mouth of the respirator comprises a rear mouth main body, a rear connecting part and a rear dust blocking ring are arranged on the outer side surface of the rear mouth main body, the rear connecting part and the rear dust blocking ring are of annular structures and are outwards protruded out of the rear mouth main body, the rear dust blocking ring is positioned at the front side of the rear connecting part, and the rear connecting part and the rear dust blocking ring are arranged at intervals; the respirator plug cover comprises a sleeving part and an extending part; the sleeving part is sleeved on the outer side of the rear connecting part, the rear end of the extending part is connected with the sleeving part, and the front end of the extending part extends to the outer side of the rear dust blocking ring; the structure of the breather plug cover and the structure of the breather rear nozzle are optimized, so that the probability of accumulated water and dust accumulation at the rear dust blocking ring is reduced.
Description
Technical Field
The utility model relates to the technical field of gearboxes, in particular to a novel respirator with a water inlet prevention structure.
Background
Components such as automotive gearboxes are typically fitted with respirators to balance the internal and external gearbox pressures and to accelerate gearbox heat dissipation. The common breather consists of a breather plug and a breather nozzle, wherein the breather nozzle is connected with the gearbox shell and is communicated with the inner cavity of the gearbox, so that the balance of the internal pressure and the external pressure of the gearbox is realized; the breather plug prevents dust, water and the like from entering the gearbox.
In the prior art, the structure of the respirator is unreasonable. The junction of respirator blanking cover and respirator mouth can ponding laying dust, and the inside cooling of gearbox can lead to water, dirt to inhale the gearbox inside through the gap between respirator blanking cover and the respirator mouth back, causes lubricating oil emulsification, has impurity. In order to increase the dustproof performance, part of respirators are internally provided with a filter membrane made of polytetrafluoroethylene and other materials; however, when the respirator works, high-pressure oil gas and dust are mixed, so that the air permeability of the filter membrane is poor, and the performance of the respirator is further affected.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a novel respirator with a water inlet prevention structure, which has a simple and reasonable structure and can ensure the reliability of long-term use.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the novel respirator with the water inlet prevention structure at least comprises a respirator blanking cover and a respirator rear nozzle, wherein the respirator blanking cover is sleeved at the rear end of the respirator rear nozzle, an airflow channel is formed between the inner wall of the respirator blanking cover and the outer wall of the respirator rear nozzle, a breathing channel is formed in the respirator rear nozzle, the rear end of the airflow channel is communicated with the breathing channel, and the front end of the airflow channel is communicated with the outside atmosphere;
the rear mouth of the respirator comprises a rear mouth main body, a rear connecting part and a rear dust blocking ring are arranged on the outer side surface of the rear mouth main body, the rear connecting part and the rear dust blocking ring are of annular structures and are outwards protruded out of the rear mouth main body, the rear dust blocking ring is positioned at the front side of the rear connecting part, and the rear connecting part and the rear dust blocking ring are arranged at intervals;
the respirator plug cover comprises a sleeving part and an extending part; the sleeve joint part is sleeved on the outer side of the rear connecting part, the rear end of the extension part is connected with the sleeve joint part, and the front end of the extension part extends to the outer side of the rear dust blocking ring.
As a preferable technical scheme, the breathing channel is opened on the rear end face of the rear mouth of the respirator, and the rear connecting part is at least provided with a communication channel which is communicated with the breathing channel and the airflow channel; in the axial direction of the rear mouth of the respirator, the relative positions of the respirator blocking cover and the rear mouth of the respirator can float.
As a preferable technical scheme, the outer diameter of the rear dust retaining ring is larger than or equal to the outer diameter of the rear connecting part; the extension part is umbrella-shaped which extends obliquely to the outer side of the sleeving part, and the large end of the extension part extends to the outer side of the rear dust blocking ring.
As the preferable technical proposal, the utility model also comprises a respirator rubber tube and a respirator front nozzle; the two ends of the rubber tube of the respirator are respectively connected with the rear mouth and the front mouth of the respirator, and the front mouth of the respirator is used for being connected with the gearbox shell.
As the preferable technical scheme, the front end of the rear mouth of the respirator is provided with a bamboo joint which is inserted into the rubber tube of the respirator to realize the fixed connection between the rear mouth of the respirator and the rubber tube of the respirator;
the front side surface of the anti-drop boss is an inclined surface and can guide the rear mouth of the respirator to be inserted into the rubber tube of the respirator; the back side of the anti-drop boss is connected with the front side, and the back side is vertical to the axial direction of the rear mouth of the respirator, so that the connection reliability can be maintained.
As the preferable technical scheme, a rubber pipe plugging ring is arranged between the bamboo joint connector and the rear dust blocking ring, and the rubber pipe plugging ring and the rear dust blocking ring are arranged at intervals.
As the preferable technical scheme, the bamboo joint is provided with a plurality of anti-falling bosses, and the outer diameters of the anti-falling bosses are gradually increased from front to back.
As the preferable technical scheme, the front mouth of the respirator is provided with a rubber tube connecting part and a shell connecting part, a sealing seat is further arranged between the rubber tube connecting part and the shell connecting part, a sealing groove is arranged on the front end face of the sealing seat, and a sealing ring is arranged in the sealing groove
As a preferable technical scheme, the sealing ring is an ED sealing ring.
As a preferable technical scheme, the inner wall of the sleeving part is provided with a clamping part which is annular and protrudes out of the inner wall of the sleeving part; the clamping part is positioned between the rear connecting part and the rear dust blocking ring.
Due to the adoption of the technical scheme, the utility model has the following advantages:
1) The structure of the breather plug cover and the structure of the breather rear nozzle are optimized, so that the probability of accumulated water and dust accumulation at the rear dust blocking ring is reduced.
2) Because the extension part is umbrella-shaped which extends obliquely to the outer side of the sleeving part, an air flow channel between the respirator blocking cover and the rear mouth of the respirator forms a structure with wide outside and narrow inside, so that the back suction pressure caused by cooling of the gearbox is effectively reduced, and water and dust are prevented from entering.
3) The structure of the respirator is simplified, the filter membrane in the respirator is canceled, and the ventilation property of the respirator is prevented from being deteriorated after the respirator is used for a period of time.
4) The length and the position of the rubber tube of the respirator can be adjusted, the position of the ventilation opening at the rear end of the respirator can be changed, the ventilation opening of the respirator is shielded through the whole vehicle structure, liquid such as water is prevented from splashing on the blocking cover of the respirator, the waterproof and dustproof capabilities of the respirator are further improved, the risks of water and dust entering the gearbox under different working conditions are reduced, and the wading performance of the gearbox is increased.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present utility model;
FIG. 3 is an enlarged partial view of region B of FIG. 2;
fig. 4 is a partial enlarged view of the area a in fig. 2.
In the figure:
1-a respirator blanking cover; 11-a socket; 12-clamping part; 13-extensions;
2-a rear mouth of the respirator; 21-a rear mouth body; 22-a rubber tube plugging ring; 23-a rear dust ring; 24-rear connection; 25-communicating channels; 26-breathing channel; 27-an anti-falling boss;
3-a rubber tube of the respirator;
4-a respirator front nozzle; 41-a hose connection; 42-a housing connection; 43-sealing seat; 44-sealing groove;
and 5-sealing rings.
Detailed Description
As shown in fig. 1-4, the novel water inlet prevention structure respirator at least comprises a respirator blanking cover 1 and a respirator rear nozzle 2. The respirator blanking cover 1 is sleeved at the rear end of the rear mouth 2 of the respirator, and the respirator blanking cover 1 is matched with the rear mouth 2 of the respirator to form a labyrinth air flow channel between the respirator blanking cover 1 and the rear mouth 2 of the respirator. The inside of the rear mouth 2 of the respirator is provided with a breathing channel 26, the rear end of the airflow channel is communicated with the breathing channel 26, and the front end is communicated with the outside atmosphere.
Specifically, as shown in fig. 4, the rear mouth 2 of the respirator includes a rear mouth body 21, a breathing passage 26 is provided in the interior of the rear mouth body 21, and the breathing passage 26 communicates with the air flow passage and the oil passage in the transmission case. The outer side surface of the rear nozzle body 21 is provided with a rear connecting part 24 and a rear dust blocking ring 23, and the rear connecting part 24 and the rear dust blocking ring 23 are of annular structures and protrude outwards from the rear nozzle body 21. The rear connecting portion 24 is located at the rear end of the rear nozzle body 21, and the rear dust ring 23 is located at the front side of the rear connecting portion 24, which are disposed at an interval.
The respirator plug 1 comprises a socket joint part 11 and an extension part 13; the sleeve joint part 11 is sleeved outside the rear connecting part 24, the rear end of the extension part 13 is connected and sealed with the sleeve joint part 11, and the front end extends to the outer side of the rear dust blocking ring 23. Because the position and the flow direction of the air flow entering the air flow channel are changed, the dust and water can be effectively prevented from being deposited at the rear dust blocking ring 23, and the risk that the dust and the water enter the gearbox is reduced.
Specifically, the socket 11 has an inner cavity, and the inner cavity is opened at the front end surface of the socket 11; the sleeving part 11 is sleeved outside the rear connecting part 24, the inner diameter of the sleeving part 11 is larger than the outer diameter of the rear connecting part 24, and a first air flow channel is formed between the inner wall of the sleeving part 11 and the outer wall of the rear connecting part 24.
The rear connecting portion 24 is provided with at least one communication passage 25, and the communication passage 25 communicates the breathing passage 26 with the first air flow passage. Specifically, the communication channel 25 may be a hole-like structure of any shape, penetrating the rear connection portion 24, and the communication channel 25 communicates the breathing channel 26 and the first airflow channel. The communication channel 25 may also be a groove as shown in fig. 4, and the groove is opened on the rear end face of the rear mouth 2 of the respirator and the inner wall and the outer wall of the rear connecting portion 24, so that the structure is convenient for processing and the processing technology can be simplified. The breathing channel 26 is opened on the rear end face of the rear mouth 2 of the respirator, and the relative position of the respirator blocking cover 1 and the rear mouth 2 of the respirator can float in the axial direction of the rear mouth 2 of the respirator. When the air pressure in the gearbox is not changed greatly, the communication channel 25 can meet the air flow requirement; when the temperature rise amplitude is large in the gearbox, and the airflow flow is increased, the respirator blanking cover 1 can be jacked up by the airflow, so that a proper airflow channel is arranged between the rear end face of the rear mouth 2 of the respirator and the respirator blanking cover 1, and the airflow circulation requirement of the gearbox is further met.
The inner wall of the sleeving part 11 is provided with a clamping part 12, and the clamping part 12 protrudes out of the inner wall of the sleeving part 11 and extends towards the inner side of the inner cavity of the sleeving part 11. The clamping portion 12 is annular, i.e. distributed over the entire circumference of the socket portion 11. The clamping part 12 is positioned between the rear connecting part 24 and the rear dust blocking ring 23, and when the sleeve joint part 11 is jointed with the rear end face of the rear mouth 2 of the respirator, the clamping part 12 and the rear connecting part 24 have a certain interval distance so as to allow the relative position of the respirator blocking cover 1 and the rear mouth 2 of the respirator to float. The inner diameter of the clamping part 12 is smaller than the outer diameter of the rear connecting part 24 and larger than the outer diameter of the rear nozzle body 21; a second air flow channel is formed between the clamping part 12 and the rear nozzle body 21, and the second air flow channel is communicated with the first air flow channel. The clamping part 12 can also change the airflow direction without realizing the assembly of the respirator blocking cover 1 and the respirator rear nozzle 2.
The outer diameter of the rear dust retaining ring 23 is larger than or equal to that of the rear connecting part 24, and the extension part 13 is umbrella-shaped and extends obliquely to the outer side of the sleeving part 11; that is, the end of the extension portion 13 connected with the sleeve portion 11 is a small end, the large end extends to the outer side of the rear dust-blocking ring 23, a third air flow channel is formed between the extension portion 13 and the rear dust-blocking ring 23, and the third air flow channel is communicated with the second air flow channel.
The respirator blocking cover 1 is matched with the rear mouth 2 of the respirator, and the first airflow channel, the second airflow channel and the third airflow channel form a labyrinth airflow channel, so that dust deposition at the rear mouth 2 of the respirator can be effectively avoided; meanwhile, the airflow cross section of the third airflow channel is larger than that of the first airflow channel, and the structure is wide in the outside and narrow in the inside, so that the back suction pressure caused by cooling of the gearbox can be reduced, water and dust are effectively prevented from entering, a filter membrane structure can be omitted, and the ventilation property of the respirator is further ensured.
The rear mouth 2 of the respirator can be directly connected with the gearbox shell, and preferably, the respirator also comprises a respirator rubber tube 3 and a front mouth 4 of the respirator, and the rear mouth 2 of the respirator is connected with the gearbox shell through the respirator rubber tube 3 and the front mouth 4 of the respirator.
The two ends of the respirator rubber tube 3 are respectively connected with the rear mouth 2 and the front mouth 4 of the respirator, and the positions of ventilation parts at the tail end of the respirator can be changed through the respirator rubber tube 3, so that the waterproof and dustproof capacities of the respirator are further improved.
The front end of the rear mouth 2 of the respirator is provided with a bamboo joint which is inserted into the rubber tube 3 of the respirator, so that the rear mouth 2 of the respirator is fixedly connected with the rubber tube 3 of the respirator. The front side surface of the anti-falling boss 27 is an inclined surface, so that the rear mouth 2 of the respirator can be guided to be inserted into the rubber tube 3 of the respirator; the rear side surface of the anti-falling boss 27 is connected with the front side surface, and the rear side surface is vertical to the axial direction of the rear mouth 2 of the respirator, so that the connection reliability can be maintained.
A rubber pipe blocking ring 22 is arranged between the bamboo joint and the rear dust blocking ring 23, the rubber pipe blocking ring 22 can limit the end part of the respirator rubber pipe 3 on one hand, and on the other hand, the rubber pipe blocking ring 22 can block the end opening of the respirator rubber pipe 3. The outer diameter of the rubber tube plugging ring 22 is larger than that of the rubber tube 3 of the respirator, so that the sealing surface can be maximized, and the sealing effect is ensured. The rear dust blocking ring 23 and the rubber tube plugging ring 22 are arranged at intervals, a certain distance is reserved between the rear dust blocking ring and the rubber tube plugging ring, and not only can the installation and the fixation of the respirator and the vehicle body be realized; meanwhile, the damage to the rubber tube 3 of the respirator caused by high-temperature gas flowing out of the airflow channel can be avoided.
When a plurality of anti-drop bosses 27 are arranged on the rear mouth 2 of the respirator, the outer diameters of the anti-drop bosses 27 are gradually increased from front to back, so that the assembly requirements of the rubber hoses 3 of the respirators with different inner diameters are met.
As shown in fig. 3, the front mouth 4 of the respirator is provided with a rubber tube connecting part 41 and a shell connecting part 42, the rubber tube connecting part 41 is an annular boss, the outer diameter of the rubber tube connecting part is slightly larger than the inner diameter of the rubber tube 3 of the respirator, and the rubber tube connecting part and the shell connecting part are connected through interference fit. The housing connecting portion 42 has a structure such as a screw thread and a buckle, and can be clamped with a gearbox housing, connected with the screw thread and the like, so that the assembly and disassembly are convenient, and the assembly efficiency is improved.
A sealing seat 43 is further arranged between the rubber tube connecting part 41 and the shell connecting part 42, and the outer diameter of the sealing seat 43 is larger than the outer diameter of the rubber tube connecting part 41 and also larger than the outer diameter of the shell connecting part 42; the front end face of the sealing seat 43 is provided with a sealing groove 44, a sealing ring 5 is arranged in the sealing groove, and the sealing ring 5 is preferably an ED sealing ring. When in use, the sealing ring 5 is pressed by the front mouth 4 of the respirator and the gearbox shell, so that the tightness of the joint is ensured. When the respirator rubber tube 3 is installed, the end face of the respirator rubber tube is tightly clung to the rear end face of the sealing seat 43, and the front end opening of the respirator rubber tube 3 can be sealed.
The foregoing has shown and described the basic principles, main features and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. The novel respirator with the water inlet prevention structure at least comprises a respirator blanking cover (1) and a respirator rear nozzle (2), wherein the respirator blanking cover (1) is sleeved at the rear end of the respirator rear nozzle (2), and an airflow channel is formed between the inner wall of the respirator blanking cover (1) and the outer wall of the respirator rear nozzle (2); the inside of the rear mouth (2) of the respirator is provided with a breathing channel (26), the rear end of the airflow channel is communicated with the breathing channel (26), and the front end is communicated with the outside atmosphere; the method is characterized in that:
the rear mouth (2) of the respirator comprises a rear mouth main body (21), a rear connecting part (24) and a rear dust blocking ring (23) are arranged on the outer side surface of the rear mouth main body (21), the rear connecting part (24) and the rear dust blocking ring (23) are of annular structures and protrude outwards of the rear mouth main body (21), and the rear dust blocking ring (23) is positioned at the front side of the rear connecting part (24) and is arranged at intervals;
the respirator blocking cover (1) comprises a sleeving part (11) and an extending part (13); the sleeve joint part (11) is sleeved on the outer side of the rear connecting part (24), the rear end of the extension part (13) is connected with the sleeve joint part (11), and the front end extends to the outer side of the rear dust blocking ring (23).
2. The novel water inlet prevention structure respirator of claim 1, wherein: the breathing channel (26) is opened on the rear end face of the rear mouth (2) of the respirator, the rear connecting part (24) is at least provided with one communication channel (25), and the communication channel (25) is communicated with the breathing channel (26) and the airflow channel; in the axial direction of the rear mouth (2) of the respirator, the relative position of the respirator blocking cover (1) and the rear mouth (2) of the respirator can float.
3. The novel water inlet prevention structure respirator of claim 1, wherein: the outer diameter of the rear dust blocking ring (23) is larger than or equal to the outer diameter of the rear connecting part (24); the extending part (13) is umbrella-shaped and extends obliquely to the outer side of the sleeving part (11), and the large end of the extending part extends to the outer side of the rear dust blocking ring (23).
4. A novel water ingress protection construction respirator according to any one of claims 1 to 3 wherein: the novel respirator also comprises a respirator rubber tube (3) and a respirator front nozzle (4); the two ends of the respirator rubber tube (3) are respectively connected with the rear mouth (2) and the front mouth (4) of the respirator, and the front mouth (4) of the respirator is used for being connected with the gearbox shell.
5. The novel water inflow prevention structure respirator of claim 4, wherein: the front end of the rear mouth (2) of the respirator is provided with a bamboo joint which is inserted into the rubber tube (3) of the respirator, so that the rear mouth (2) of the respirator is fixedly connected with the rubber tube (3) of the respirator;
the front side surface of the anti-falling boss (27) is an inclined surface, so that the rear mouth (2) of the respirator can be guided to be inserted into the rubber tube (3) of the respirator; the rear side surface of the anti-falling boss (27) is connected with the front side surface, and the rear side surface is vertical to the axial direction of the rear mouth (2) of the respirator, so that the connection reliability can be maintained.
6. The novel water inflow prevention structure respirator of claim 5, wherein: a rubber pipe blocking ring (22) is arranged between the bamboo joint connector and the rear dust blocking ring (23), and the rubber pipe blocking ring (22) and the rear dust blocking ring (23) are arranged at intervals.
7. The novel water inflow prevention structure respirator of claim 5, wherein: the bamboo joint is provided with a plurality of anti-falling bosses (27), and the outer diameters of the anti-falling bosses (27) are gradually increased from front to back.
8. The novel water inflow prevention structure respirator of claim 4, wherein: the respirator front nozzle (4) is provided with a rubber pipe connecting part (41) and a shell connecting part (42), a sealing seat (43) is further arranged between the rubber pipe connecting part (41) and the shell connecting part (42), a sealing groove (44) is arranged on the front end face of the sealing seat (43), and a sealing ring (5) is arranged in the sealing groove (44).
9. The novel water inlet prevention structure respirator of claim 8, wherein: the sealing ring (5) is an ED sealing ring.
10. A novel water ingress protection construction respirator according to any one of claims 1 to 3 wherein: the inner wall of the sleeving part (11) is provided with a clamping part (12), and the clamping part (12) is annular and protrudes out of the inner wall of the sleeving part (11); the clamping part (12) is positioned between the rear connecting part (24) and the rear dust blocking ring (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320832893.0U CN219932910U (en) | 2023-04-14 | 2023-04-14 | Novel prevent inlet structure respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320832893.0U CN219932910U (en) | 2023-04-14 | 2023-04-14 | Novel prevent inlet structure respirator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932910U true CN219932910U (en) | 2023-10-31 |
Family
ID=88491855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320832893.0U Active CN219932910U (en) | 2023-04-14 | 2023-04-14 | Novel prevent inlet structure respirator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932910U (en) |
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2023
- 2023-04-14 CN CN202320832893.0U patent/CN219932910U/en active Active
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