CN202034302U - Water flow indicator - Google Patents
Water flow indicator Download PDFInfo
- Publication number
- CN202034302U CN202034302U CN2010205550838U CN201020555083U CN202034302U CN 202034302 U CN202034302 U CN 202034302U CN 2010205550838 U CN2010205550838 U CN 2010205550838U CN 201020555083 U CN201020555083 U CN 201020555083U CN 202034302 U CN202034302 U CN 202034302U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- water flow
- flow indicator
- seal closure
- fork
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to the field of fire fighting apparatus, and provides a novel water flow indicator which is difficult to invalidate, has a simple structure and does not have a dynamic seal structure. The water flow indicator comprises a shell, a swing link, a blade, a sealing cover, an inching switch, a first permanent magnet and a second permanent magnet, wherein the sealing cover is positioned on the upper part of the shell; the first permanent magnet is fixed on one side of the upper end of the swing link, and the swing link is arranged in the sealing cover; the inching switch is arranged outside the sealing cover; the second permanent magnet is fixed on a contact piece of the inching switch; and the same poles of the second permanent magnet and the first permanent magnet are opposite to each other. In the water flow indicator, unavailability of the dynamic seal structure, reliable sealing and low probability of invalidation are realized by using the magnetic penetrability between the permanent magnets.
Description
Technical field
The utility model relates to the fire-fighting equipment field, relates in particular to a kind of water flow indicator.
Background technology
The water flow indicator that generally uses in the fire extinguishing system mostly adopts structures such as permanent magnet tongue tube, bellows movable sealing, rubber sleeve movable sealing or rubber ring movable sealing at present.The rubber sleeve movable sealing as shown in Figure 1, adopt flexible glue cover 4 to be wrapped on the fork 3 of blade 5, flexible glue overlaps 4 upper ends and links to each other with O type circle 1 by film, with pressing plate 2 and shell body O type circle 1 is compressed, fork 3 is worn a bearing pin and is fixed in shell body, and serve as axle swing with pin uranium, utilize the elasticity of flexible glue cover to realize movable sealing.There is certain defective in this kind structure, and long-term the use easily of elastomeric material worn out, and the film of flexible glue set upper side is extremely thin again, and the stretching glued membrane caused seal wear easily when fork rotated.It is higher that bellows movable sealing form is made precision, involves great expense.The minimum discharge of permanent magnet dry-reed structure detection is unadjustable.
The utility model content
The technical problem that the utility model solves is to overcome the deficiencies in the prior art, and the water flow indicator of a kind of novel difficult inefficacy, simple in structure and stationary seal structure is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of water flow indicator comprises housing, fork, lodicule, seal closure, sensitive switch, first permanent magnet, second permanent magnet; Described seal closure is positioned at housing top; Described fork upper end one side is fixed first permanent magnet, and places in the seal closure; Described sensitive switch is located at outside the seal closure, fixes second permanent magnet on the contact of described sensitive switch, described second permanent magnet and the first permanent magnet homopolarity over against.The structure of the utility model water flow indicator, utilize seal closure with fork upper end and the sealing of first permanent magnet on it, and first permanent magnet and second permanent magnet are separated, rely on the penetrability of magnetic force between first permanent magnet and second permanent magnet, the action of fork is reached sensitive switch, with the On/Off sensitive switch, water-flow signal is converted to the signal of telecommunication, realize the current indicative function.The utility model is simple in structure, has realized stationary seal by design cleverly, and sealing is reliable, and is difficult for losing efficacy.
In order to regulate the lowest detection flow, the described fork upper end opposite side relative with the first permanent magnet installation site is provided with regulating spring, and described regulating spring is fixed on housing or the seal closure, is preferably to be fixed on the housing, to keep the sealing property of seal closure.Regulate the size that fork triggers the required power of sensitive switch by the tensile elongation that changes regulating spring, thereby regulate the minimum discharge that detects.
Seal closure one end is the outer convex surface of arc, and the design of the outer convex surface of arc can realize taking minimum space outerpace and satisfy and hold the required inner space of regulating spring.
In order to prevent the influence of outer bound pair sensitive switch, improve its precision and increase the service life simultaneously, described seal closure also is provided with outer cover outward, and the described sensitive switch and second permanent magnet are positioned at outer cover.
The fixedly connected lodicule in described fork lower end.Described housing upper surface is provided with groove, and described fork middle part is passed with bearing pin, hangs in the described groove, can freely swing.
Compared with prior art, the beneficial effect of technical solutions of the utility model is: the water flow indicator of this patent, and utilize seal closure that first permanent magnet and second permanent magnet are separated, utilize magnetic force that the fork action is delivered to the outer sensitive switch of seal closure, be novel stationary seal structure, sealing is reliable; Simultaneously regulating spring be arranged so that the utility model scalable lowest detection flow, applied widely; In addition, the utility model is simple in structure, and cost of manufacture is low.
Description of drawings
Flexible glue cover movable sealing water flow indicator structural representation in Fig. 1 prior art;
Fig. 2 the utility model master pseudosection;
Fig. 3 the utility model top plan view.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described further.
As shown in Figure 2, a kind of water flow indicator comprises housing 5, fork 4, lodicule 6, seal closure 3, outer cover 8, sensitive switch 2, first permanent magnet 1 and second permanent magnet.Described outer cover 8 is located at housing 5 tops, and seal closure 3 and sensitive switch 2 place in the outer cover 8.Described fork 4 upper ends one side is fixed first permanent magnet 1, opposite side secured adjusted spring 7, and place in the seal closure 3, described regulating spring is made up of screw and spring.Described regulating spring 7 other ends are fixed on the housing 5, and the position concerns as shown in Figure 2.Described sensitive switch 2 is located at outside the seal closure 3, fixes second permanent magnet on the contact of described sensitive switch 2, described second permanent magnet and first permanent magnet, 1 homopolarity over against.
The fixedly connected lodicule 6 in described fork 4 lower ends.Described housing 5 upper surfaces are provided with groove, and described fork 4 middle parts are provided with aperture, and bearing pin passes this aperture, and fork is hung in the described groove.
In conjunction with the vertical view cutaway drawing of Fig. 3 as can be seen, described seal closure 3 one sides are the outer convex surface of arc, in order to the space that holds regulating spring 7 to be provided.
The course of work of water flow indicator of the present utility model is as follows: regulate the distance between first permanent magnet 1 and second permanent magnet when mounted, make fork can make magnetic force greater than sensitive switch elastic force in amplitude of fluctuation.When current pass through, promote lodicule 6 and drive fork 4 actions, when first permanent magnet 1 that is fixed in fork 4 upper ends and be fixed on distance between second permanent magnet on sensitive switch 2 contacts and be contracted to the magnetic force size and touch sensitive switch, make water-flow signal change the signal of telecommunication into, reach the current indicative function.In use, can be according to actual needs, utilize regulating spring 7 to regulate the lowest detection flow, concrete grammar is: the tensile elongation that changes regulating spring 7 by screw is regulated the size that fork 4 triggers sensitive switch 2 required power, thereby regulates the minimum discharge that detects.
Claims (6)
1. a water flow indicator comprises housing, fork, lodicule and sensitive switch, it is characterized in that, also is provided with seal closure, first permanent magnet, second permanent magnet; Described seal closure is positioned at housing top; Described fork upper end one side is fixed first permanent magnet, and places in the seal closure; Described sensitive switch is located at outside the seal closure, fixes second permanent magnet on the contact of described sensitive switch, described second permanent magnet and the first permanent magnet homopolarity over against.
2. water flow indicator according to claim 1 is characterized in that, described fork upper end opposite side is provided with regulating spring, and described regulating spring is fixed on housing or the seal closure.
3. water flow indicator according to claim 2 is characterized in that, described seal closure one end is the outer convex surface of the arc that is used to provide the space that holds described regulating spring.
4. according to claim 1 or 2 or 3 described water flow indicators, it is characterized in that described seal closure also is provided with outer cover outward, the described sensitive switch and second permanent magnet are positioned at outer cover.
5. water flow indicator according to claim 4 is characterized in that, the fixedly connected lodicule in described fork lower end.
6. water flow indicator according to claim 5 is characterized in that, described housing upper surface is provided with groove, and described fork middle part is passed with bearing pin, hangs in the described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205550838U CN202034302U (en) | 2010-09-30 | 2010-09-30 | Water flow indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205550838U CN202034302U (en) | 2010-09-30 | 2010-09-30 | Water flow indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202034302U true CN202034302U (en) | 2011-11-09 |
Family
ID=44896591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205550838U Expired - Fee Related CN202034302U (en) | 2010-09-30 | 2010-09-30 | Water flow indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202034302U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106730533A (en) * | 2016-12-06 | 2017-05-31 | 中国航天建设集团有限公司 | Full-automatic fire-fighting system with real-time monitoring and control |
| CN109268667A (en) * | 2018-10-17 | 2019-01-25 | 燕山大学 | Dry oil lubrication flow switch |
| CN109313996A (en) * | 2016-06-02 | 2019-02-05 | 赖茵豪森机械制造公司 | Load ratio bridging switch head and load ratio bridging switch with load ratio bridging switch head |
-
2010
- 2010-09-30 CN CN2010205550838U patent/CN202034302U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109313996A (en) * | 2016-06-02 | 2019-02-05 | 赖茵豪森机械制造公司 | Load ratio bridging switch head and load ratio bridging switch with load ratio bridging switch head |
| CN109313996B (en) * | 2016-06-02 | 2020-07-17 | 赖茵豪森机械制造公司 | On-load tap changer head and on-load tap changer with same |
| US11177068B2 (en) | 2016-06-02 | 2021-11-16 | Maschinenfabrik Reinhausen Gmbh | On-load tap changer head and on-load tap changer having an on-load tap changer head |
| CN106730533A (en) * | 2016-12-06 | 2017-05-31 | 中国航天建设集团有限公司 | Full-automatic fire-fighting system with real-time monitoring and control |
| CN109268667A (en) * | 2018-10-17 | 2019-01-25 | 燕山大学 | Dry oil lubrication flow switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |