CN211647154U - Prevent terminal structure of ventilation PVC pipeline that flows backward - Google Patents
Prevent terminal structure of ventilation PVC pipeline that flows backward Download PDFInfo
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- CN211647154U CN211647154U CN201921618273.7U CN201921618273U CN211647154U CN 211647154 U CN211647154 U CN 211647154U CN 201921618273 U CN201921618273 U CN 201921618273U CN 211647154 U CN211647154 U CN 211647154U
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- trompil
- protective cover
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Abstract
The utility model provides a prevent terminal structure of ventilation PVC pipeline that flows backward belongs to building ventilation technical field, including device joint base, outside protective cover, ventilation trompil one, bottom ventilation trompil one, the device inner core, ventilation trompil two, bottom ventilation trompil two and inside cavity, device joint base top fixedly connected with outside protective cover all around, outside protective cover trompil all around is provided with ventilation trompil one, outside protective cover bottom trompil all around is provided with bottom ventilation trompil one, and bottom ventilation trompil one is located ventilation trompil below, fixedly connected with device inner core in the middle of the device joint base top. The side with the larger diameter of the ventilation opening faces the inner side of the device inner core, the air flow inside the ventilation opening passes through the side with the larger diameter and faces the inner side of the device inner core during ventilation and then is sprayed out from the small side outlet, the air flow in the process is compressed, the flow speed is increased, and the purpose of the air flow is to prevent the external air flow from flowing backwards.
Description
Technical Field
The utility model relates to a building ventilation structure technical field, more specifically relates to an end structure technical field of pipeline.
Background
Piping is a device for transporting a gas, liquid or fluid with solid particles, which is formed by connecting pipes, pipe connectors, valves, etc., and, in general, after the fluid is pressurized by a blower, a compressor, a pump, a boiler, etc., the pipeline can be widely used for water supply, water drainage, heat supply, gas supply, long-distance petroleum and natural gas transmission, agricultural irrigation, hydraulic engineering and various industrial devices, the existing pipeline is generally made of PVC material, the PVC material has good compression resistance and anti-cracking effect, in some buildings, a duct for ventilation between floors is installed in a wall of the building, and the duct is opened to a roof of the building and then discharges air, but the existing ventilation duct has a simple end structure and has a poor effect of preventing rainwater from flowing backward.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of proposing in the background art to provide an end structure of ventilation PVC pipeline that prevents flowing backward.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent terminal structure of ventilation PVC pipeline that flows backward, includes device joint base, outside protective cover, ventilation trompil one, bottom ventilation trompil one, device inner core, ventilation trompil two, bottom ventilation trompil two and inside cavity, device joint base top fixedly connected with outside protective cover all around, outside protective cover trompil all around is provided with ventilation trompil one, outside protective cover bottom trompil all around is provided with bottom ventilation trompil one, and bottom ventilation trompil one is located ventilation trompil below, fixedly connected with device inner core in the middle of the device joint base top, device inner core outside surface trompil is provided with ventilation trompil two, device inner core outside bottom surface trompil all around is provided with bottom ventilation trompil two, the inboard nestification of device inner core is.
Preferably, the inner side direction of the bottom ventilation opening II faces upwards, and the bottom ventilation opening II is communicated with the inner cavity.
Preferably, the bottom of the outer side of the device inner core is arc-shaped, and the device inner core is positioned on the inner side of the outer protective cover.
Preferably, the first ventilation opening and the first bottom ventilation opening are respectively aligned with the second ventilation opening and the second bottom ventilation opening.
Preferably, the second ventilation opening is horn-shaped in cross section, and the side, with the larger diameter, of the second ventilation opening faces the inner side of the device inner core.
Preferably, the ventilation opening is distributed in number in two.
Has the advantages that:
1. the anti-backflow ventilation PVC pipeline is characterized in that a device inner core is arranged at the end structure of the anti-backflow ventilation PVC pipeline, the bottom of the outer side of the device inner core is arranged in an arc shape, the device inner core is positioned at the inner side of an external protective cover, when the anti-backflow ventilation PVC pipeline is used, the device is arranged at the end of the ventilation pipeline, rainwater can be beaten to the external protective cover in rainy days, a ventilation opening I is arranged for ensuring ventilation, the rainwater at the moment can enter the internal part of the external protective cover, and cannot enter the ventilation pipeline when entering the internal part of the external protective cover, because the device inner core is arranged at the inner side, and because the bottom of the outer side is arranged in an arc shape, the rainwater beaten to the device inner core can slide down along the outer wall of the device inner core, and can be discharged through the ventilation opening at the bottom, and because the inner side direction of the ventilation opening at, the rainwater accumulated around the bottom of the device inner core is blown out of the ventilation openings I, so that the rainwater backflow effect is further improved.
2. Secondly, the two cross-sections of the ventilation openings are trumpet-shaped, the side with the large diameter of the ventilation openings faces the inner side of the device inner core, the air flow inside the ventilation openings can pass through the side with the large diameter and face the inner side of the device inner core, then the air flow is sprayed out from the small side outlet, the air flow in the process can be compressed, and therefore the flow velocity is increased, and the purpose of preventing the external air flow from flowing backwards is achieved.
Drawings
Fig. 1 is a schematic view of the overall front structure of the present invention.
Fig. 2 is a schematic view of the front cross-sectional structure of the external protection cover of the present invention.
Fig. 3 is a schematic view of the front cross-sectional structure of the inner core of the device of the present invention.
Fig. 4 is a schematic view of the cross-sectional structure of the device core in a plan view.
In FIGS. 1-4: 1-device snap base, 2-outer protective cover, 201-vent first, 202-bottom vent first, 3-device inner core, 301-vent second, 302-bottom vent second, 303-inner cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present invention, an anti-backflow ventilation PVC pipe terminal structure includes a device clamping base 1, an external protection cover 2, a ventilation opening 201, a bottom ventilation opening 202, a device core 3, a ventilation opening 301, a bottom ventilation opening 302, and an internal cavity 303, the external protection cover 2 is fixedly connected to the periphery of the top of the device clamping base 1, the ventilation opening 201 is arranged on the periphery of the external protection cover 2, the bottom ventilation opening 202 is arranged on the periphery of the bottom of the external protection cover 2, and the first bottom ventilation opening 202 is positioned below the first ventilation opening 201, the device inner core 3 is fixedly connected in the middle of the top of the device clamping base 1, a second ventilation opening 301 is formed in the opening on the surface of the outer side of the device inner core 3, a second bottom ventilation opening 302 is formed in the opening on the periphery of the surface of the outer side of the device inner core 3, and an inner cavity 303 is formed in the inner side of the device inner core 3 in an embedded mode.
In this embodiment, the second ventilation openings 301 are distributed in a plurality.
In this embodiment, the bottom of the outer side of the device inner core 3 is arranged in an arc shape, and the device inner core 3 is positioned at the inner side of the outer protective cover 2, when the device is used, the device is installed at the tail end of the ventilation duct, rainwater can flap to the outer protective cover 2 in rainy days, and the ventilation opening one 201 is required to ensure ventilation, at this time, rainwater can possibly enter the inner side of the outer protective cover 2, and when rainwater enters the inner side of the outer protective cover 2, the rainwater cannot enter the ventilation duct, because the device inner core 3 is also arranged at the inner side, and because the device inner core 3 is arranged in an arc shape at the bottom of the outer side, the rainwater flap to the device inner core 3 can slide along the outer wall of the device inner core 3, and the rainwater is discharged through the ventilation opening one 202 at the bottom, and because the inner side direction of the ventilation opening two 302 at the bottom is upward, and the ventilation opening two 302 at the, the rainwater accumulated around the bottom of the device inner core 3 is blown out of the first ventilation opening 201 through the second ventilation opening 302 at the upper part and the lower part, so that the rainwater backflow effect is further improved.
In this embodiment, the cross section of the second ventilation opening 301 is trumpet-shaped, and the side with the larger diameter of the second ventilation opening 301 faces the inner side of the device core 3, when ventilation is performed, the internal airflow passes through the side with the larger diameter and faces the inner side of the device core 3, and then is ejected from the small side outlet, and the airflow in the process is compressed to increase the flow velocity, so that the purpose of preventing the external airflow from flowing backwards is achieved.
When the terminal structure of the anti-backflow ventilation PVC pipeline is used, firstly, whether the equipment is complete or not is checked, the air flow inside the equipment can pass through the ventilation opening II 301 on one side with a large diameter and faces the inner side of the inner core 3 of the device during daily ventilation and then is sprayed out from the ventilation opening II 301 on one side with a smaller diameter, the air flow in the process can be compressed to increase the flow velocity, the purpose of doing so is to prevent the external air flow from flowing backwards, rainwater can flap on the external protective cover 2 in rainy days, a ventilation opening I201 needs to be arranged to ensure ventilation, the rainwater at the moment can enter the internal part of the external protective cover 2, when the rainwater enters the internal part of the external protective cover 2, the rainwater flap on the inner core 3 of the device can slide along the outer wall of the inner core 3 of the device, and the rainwater can be discharged through the ventilation opening I202 at the bottom, and because the inner side direction of the second bottom ventilation opening 302 is upward, and the second bottom ventilation opening 302 and the inner cavity 303 are arranged in a penetrating manner, part of air flow of the inner cavity 303 can enter the second bottom ventilation opening 302 and is blown out through the second bottom ventilation opening 302 from the upper part and the lower part, the purpose of the arrangement is to blow out rainwater accumulated around the bottom of the device inner core 3 out of the first ventilation opening 201, and therefore the rainwater backflow effect is further improved.
The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (6)
1. The terminal structure of the anti-backflow ventilation PVC pipeline comprises a device clamping base (1), an external protective cover (2), a ventilation hole I (201), a bottom ventilation hole I (202), a device inner core (3), a ventilation hole II (301), a bottom ventilation hole II (302) and an internal cavity (303), and is characterized in that the external protective cover (2) is fixedly connected to the periphery of the top of the device clamping base (1), the ventilation hole I (201) is arranged on the periphery of the external protective cover (2), the bottom ventilation hole I (202) is arranged on the periphery of the bottom of the external protective cover (2), the bottom ventilation hole I (202) is located below the ventilation hole I (201), the device inner core (3) is fixedly connected to the middle of the top of the device clamping base (1), and the ventilation hole II (301) is arranged on the surface of the outer side of the device inner core (3), the device inner core (3) is characterized in that holes are formed in the periphery of the bottom surface of the outer side of the device inner core (3) and are provided with bottom ventilation holes II (302), and an inner cavity (303) is formed in the inner side of the device inner core (3) in an embedded mode.
2. The anti-backflow ventilation PVC pipeline end structure according to claim 1, characterized in that: the inner side direction of the second bottom ventilation opening (302) faces upwards, and the second bottom ventilation opening (302) is communicated with the inner cavity (303).
3. The anti-backflow ventilation PVC pipeline end structure according to claim 1, characterized in that: the device inner core (3) is arc-shaped at the bottom of the outer side, and the device inner core (3) is positioned at the inner side of the outer protective cover (2).
4. The anti-backflow ventilation PVC pipeline end structure according to claim 1, characterized in that: the first ventilation opening (201) and the first bottom ventilation opening (202) are respectively aligned with the second ventilation opening (301) and the second bottom ventilation opening (302).
5. The anti-backflow ventilation PVC pipeline end structure according to claim 1, characterized in that: the section of the second ventilation opening (301) is horn-shaped, and the side with the large diameter of the second ventilation opening (301) faces the inner side of the device inner core (3).
6. The anti-backflow ventilation PVC pipeline end structure according to claim 1, characterized in that: the second ventilation opening (301) is distributed with a plurality of openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921618273.7U CN211647154U (en) | 2019-09-26 | 2019-09-26 | Prevent terminal structure of ventilation PVC pipeline that flows backward |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921618273.7U CN211647154U (en) | 2019-09-26 | 2019-09-26 | Prevent terminal structure of ventilation PVC pipeline that flows backward |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211647154U true CN211647154U (en) | 2020-10-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921618273.7U Active CN211647154U (en) | 2019-09-26 | 2019-09-26 | Prevent terminal structure of ventilation PVC pipeline that flows backward |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211647154U (en) |
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2019
- 2019-09-26 CN CN201921618273.7U patent/CN211647154U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An end structure of anti backflow ventilation PVC pipeline Effective date of registration: 20230508 Granted publication date: 20201009 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: GUANGZHOU WANTONG VENTION EQUIPMENT CO.,LTD. Registration number: Y2023980040031 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |