CN2641600Y

CN2641600Y - Pulse counting switch for intelligent watermeter

Info

Publication number: CN2641600Y
Application number: CN 03213889
Authority: CN
Inventors: 孙殿佩
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-30
Filing date: 2003-06-30
Publication date: 2004-09-15
Anticipated expiration: 2013-06-30

Abstract

The utility model relates to an impulse counting switch for an intelligent water meter, which is composed of a metal casing, a steel axle, deducing wires, an amplifying circuit board, an absorbing plate, an electret, a circular magnet iron, a jewel eye, and a driven wheel. The utility model is characterized in that the electret is fixed on the driven wheel of the steel axle, the circular magnet iron is fixed at the bottom of the driven wheel, the absorbing plate is arranged on the electret, the amplifying circuit board is fixed on the absorbing plate, and is reduced outside the metal casing through the deducing wires, and the jewel eye is arranged at the bottom of the steel axle. The utility model has the advantages that the sensitivity is high, the power consumption is small, the service life is long, the rotation is nimble, the sealing performance and the anti-jamming performance are good, and the utility model can perform reliable recording during the high speed and low speed rotation. The impulse switch can be used on a water meter, and on various instruments and meters requiring impulse to record, such as intelligent gas meters, odometers, tachometers, etc. thereby being an ideal sensor switch element. The utility model can be used to effectively control and prevent the occurrence of phenomenon of water thievery.

Description

Intellectual water meter is with the pulse switch that counts

Technical field the utility model belongs to a kind of sensing switch element, relates to a kind of intellectual water meter with the pulse switch that counts, and can also be used for other various instrument and meters that need pulse to note down such as intelligent gas meter, mileometer, tachometer gage.

Background technology China is one of lack of water country in the world, using water wisely is extremely urgent, particularly the waste of domestic use of water and process water greatly, it is also very serious to lose the water phenomenon, input fund is difficult to regain on potable water, causes very big waste to country, the counting cost by gas meter but also a large amount of personnel of needs visit, promptly trouble is difficult to regain whole funds of the water yield of selling again, influences the normal turnover of state fund.At present, domestic existing traditional mechanical numeration tap water water meter, electronics numeration tap water water meter, all there is a common fault, because water wheels have certain resistance in the water meter when rotating, therefore water wheels can not rotate under weep (miniflow) situation, and the sensitivity pointer of water meter does not rotate, so water meter can not measure, give the water-robbery person with chance, cause very big loss to water-supplying unit.

The summary of the invention the purpose of this utility model is for overcoming the shortcoming of above-mentioned existence, can effectively control and prevent the stealing water, solved Running-water Company and needed the visit problem of counting cost by gas meter of extensive work personnel, for intelligent tap water water meter provides a kind of corollary apparatus pulse numeration switch.

The utility model intellectual water meter is with pulse numeration switch content Description:

The utility model intellectual water meter is with the pulse switch that counts, form by metal shell, steel axle, extension line, magnification circuit plate, baffle, electret, ring-shaped magnet, jewel eye, follower, it is characterized in that: electret is fixed on the follower on the steel axle, ring-shaped magnet is fixed on the bottom of follower, baffle is set on electret, magnification circuit plate is fixed on the baffle, draws the outside of metal shell by extension line, in the bottom of steel axle the jewel eye is set.

The utility model intellectual water meter only needs the 1-2uA electric current just can work reliably with the special power saving of pulse numeration switch.Owing to be contactless transmission signal, thus its life-span be that other switch can't replace, but continuous working is more than 5 years.Adopt high-carbon steel axle and jewel eye, therefore rotate not only flexibly but also wear-resistant, never influence the sensitivity of water meter.Its outer cover adopts stamped metal housing, encapsulates with machinery, not only waterproof, gas-tight but also antimagnetic, anti-other high frequency interference makes the more stable work of water meter reliable.The utlity model has highly sensitive, power consumption is little, the life-span is long, rotation is flexible, sealing and the good characteristics of anti-tampering performance, no matter low speed or high-speed rotation can both reliably be carried out record.This pulse switch not only can be used on the water meter, and other needs on the various instrument and meters that pulse notes down also to can be used on intelligent gas meter, mileometer, tachometer gage etc., is a kind of desirable sensing switch element.

Description of drawings Fig. 1 is an intellectual water meter with pulse numeration construction of switch synoptic diagram

Among Fig. 1: 1 is that metal shell, 2 is that steel axle, 3 is that extension line, 4 is that magnification circuit plate, 5 is that baffle, 6 is that electret, 7 is that ring-shaped magnet, 8 is that jewel eye, 9 is a follower

Embodiment the utility model intellectual water meter is achieved in that to do below in conjunction with accompanying drawing with pulse numeration switch and specifies.See Fig. 1, form by metal shell 1, steel axle 2, extension line 3, magnification circuit plate 4, baffle 5, electret 6, ring-shaped magnet 7, jewel eye 8, follower 9, it is characterized in that: electret 6 is fixed on the follower 9 on the steel axle 2, ring-shaped magnet 7 is fixed on the bottom of follower 9, baffle 5 is set on electret 6, magnification circuit plate 4 is fixed on the baffle 5, draws the outside of metal shell 1 by extension line 3, in the bottom of steel axle 2 jewel eye 8 is set.

Driving magnet when tap water water meter movement impeller rotates rotates simultaneously, the utility model intellectual water meter is passed in magnetic field also rotates its follower 9 and the electret 6 above it with the ring-shaped magnet 7 on the pulse numeration switch simultaneously, electret 6 is a charge carrier, when below electret 6 turns to baffle 5, because of being loaded with a large amount of negative charge on certain positive charge and the electret 6 on the baffle 5, produce electric current by the positive and negative charge converting motion, amplify by the amplifying circuit on the magnification circuit plate 4 and form pulse voltage.Follower 9 revolutions are moving to produce electric pulse one time once enclosing, and has therefore played the effect of electronic switch,

Claims

1, a kind of intellectual water meter is with the pulse switch that counts, be by metal shell (1), steel axle (2), extension line (3), magnification circuit plate (4), baffle (5), electret (6), ring-shaped magnet (7), jewel eye (8), follower (9) is formed, it is characterized in that: electret (6) is fixed on the follower (9) on the steel axle (2), ring-shaped magnet (7) is fixed on the bottom of follower (9), baffle (5) is set on electret (6), magnification circuit plate (4) is fixed on the baffle (5), draw the outside of metal shell (1) by extension line (3), jewel eye (8) is set in the bottom of steel axle (2).