CN104343715A - Exhaust fan protective cover opening and closing device - Google Patents
Exhaust fan protective cover opening and closing device Download PDFInfo
- Publication number
- CN104343715A CN104343715A CN201310346209.9A CN201310346209A CN104343715A CN 104343715 A CN104343715 A CN 104343715A CN 201310346209 A CN201310346209 A CN 201310346209A CN 104343715 A CN104343715 A CN 104343715A
- Authority
- CN
- China
- Prior art keywords
- exhaust fan
- protective cover
- stay cord
- electromagnet
- closing device
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an exhaust fan protective cover opening and closing device. The exhaust fan protective cover opening and closing device comprises an exhaust fan (1), a protective cover (2), an extension spring (3), a connecting rod (4), a connecting block (5) and a manual pull rope (7), wherein the exhaust fan (1) comprises a fan border (11), a spring seat (12) and an inner cover (13); the exhaust fan protective cover opening and closing device is characterized by further comprising a pull rope (6) and an electromagnet (8); an upper hook of the extension spring (3) is annularly hooked into a hole of the spring seat (12); the connecting block (5) is connected with the extension spring (3), the connecting rod (4), the pull rope (6) and the manual pull rope (7) respectively; the electromagnet (8) is mounted at a right lower corner of the exhaust fan (1); the electromagnet (8) is connected with the connecting block (5) through the pull rope (6). The exhaust fan protective cover opening and closing device is simple in structure, good in protection performance, low in cost and long in service life.
Description
Technical field
The present invention relates to fan, specifically ventilating fan protecting cover open/close device.
Background technique
The protecting cover of existing ventilating fan adopts the manual stay cord of manual operation to open or close protecting cover by contiguous block, connecting rod successively again, there are the following problems for this mode: 1, when ventilating fan just in the running, unexpected power failure, at this moment, may forget closedown ventilating fan due to the carelessness of operator; 2, manual stay cord adopts nylon thread to make mostly, and the time is used of a specified duration, may because rubbing breakage and corrosion and be easily torn.
Summary of the invention
Object of the present invention is just to provide that a kind of structure is simple, barrier propterty good, cost is low, the ventilating fan protecting cover open/close device of long service life.
For achieving the above object, the present invention includes ventilating fan, protecting cover, extension spring, connecting rod, contiguous block and manual stay cord, described ventilating fan comprises fan housing, spring seat and inner cap, also comprise stay cord and electromagnet, the upper shackle of described extension spring is hung in the hole of spring seat, described contiguous block is connected with extension spring, connecting rod, stay cord and manual stay cord respectively, and described electromagnet is loaded on the lower right corner of ventilating fan, and described electromagnet is connected with contiguous block by stay cord.
The present invention is owing to have employed stay cord and electromagnet, and this structure, when ventilating fan is energized, electromagnet is energized adhesive simultaneously, now, pull down by stay cord the block that is dynamically connected, then, contiguous block drivening rod opens protecting cover, when ventilating fan power-off, electromagnet power-off is simultaneously thrown off, now, rely on extension spring upwards can pull contiguous block, contiguous block drivening rod closes protecting cover; In addition, in cold situation, protecting cover can be opened with manual stay cord, to ventilate.Structure of the present invention is simple, and barrier propterty is good, and cost is low, long service life.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
See Fig. 1, the present invention includes ventilating fan 1, protecting cover 2, extension spring 3, connecting rod 4, contiguous block 5 and manual stay cord 7, described ventilating fan 1 comprises fan housing 11, spring seat 12 and inner cap 13, also comprise stay cord 6 and electromagnet 8, the upper shackle of described extension spring 3 is hung in the hole of spring seat 12, described contiguous block 5 is connected with extension spring 3, connecting rod 4, stay cord 6 and manual stay cord 7 respectively, described electromagnet 8 is loaded on the lower right corner of ventilating fan 1, and described electromagnet 8 is connected with contiguous block 5 by stay cord 6.
Claims (1)
1. ventilating fan protecting cover open/close device, comprise ventilating fan (1), protecting cover (2), extension spring (3), connecting rod (4), contiguous block (5) and manual stay cord (7), described ventilating fan (1) comprises fan housing (11), spring seat (12) and inner cap (13), it is characterized in that: also comprise stay cord (6) and electromagnet (8), the upper shackle of described extension spring (3) is hung in the hole of spring seat (12), described contiguous block (5) respectively with extension spring (3), connecting rod (4), stay cord (6) and manual stay cord (7) connect, described electromagnet (8) is loaded on the lower right corner of ventilating fan (1), described electromagnet (8) is connected with contiguous block (5) by stay cord (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310346209.9A CN104343715A (en) | 2013-08-11 | 2013-08-11 | Exhaust fan protective cover opening and closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310346209.9A CN104343715A (en) | 2013-08-11 | 2013-08-11 | Exhaust fan protective cover opening and closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104343715A true CN104343715A (en) | 2015-02-11 |
Family
ID=52500005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310346209.9A Pending CN104343715A (en) | 2013-08-11 | 2013-08-11 | Exhaust fan protective cover opening and closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104343715A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231536A (en) * | 2023-11-11 | 2023-12-15 | 曲阳金隅水泥有限公司 | High-efficient environmental protection's negative pressure dust removal fan |
-
2013
- 2013-08-11 CN CN201310346209.9A patent/CN104343715A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117231536A (en) * | 2023-11-11 | 2023-12-15 | 曲阳金隅水泥有限公司 | High-efficient environmental protection's negative pressure dust removal fan |
| CN117231536B (en) * | 2023-11-11 | 2024-01-12 | 曲阳金隅水泥有限公司 | High-efficient environmental protection's negative pressure dust removal fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |
|
| WD01 | Invention patent application deemed withdrawn after publication |