Full liquid-sealing water meter counter
Technical field
The present invention relates to a kind of water meter, particularly a kind of full liquid-sealing water meter counter.
Background technology
At present, the conventional metered dose water meter that uses on the market mainly is divided into three kinds by the working environment of counter: the one, and dry-type meter: the counter of water meter and tested water are kept apart, and dial plate and pointer all are " doing "; This type of meter reading is clear, does not receive the influence of water quality and table internal and external temperature, but complex structure, cost is high relatively; Poor performance under moving flow of beginning and the minimum flow; Because it is this type water meter is by the magnetic transmission, high relatively to magnet steel technology, assembly technology, water quality requirement; And use magnet steel to demagnetize for a long time, take off magnetic, water meter is not walked about thereby cause; In view of all drawbacks of dry type table, domestic very difficult employing dry type table is not so dry-type meter has promotional value at home.The 2nd, wet-type meter: water meter counter is immersed in the tested water, because of dial plate and pointer all are gaining the name of " wetting "; This type of water meter structure is simpler, manufacturing, easy to maintenance, and cost is low relatively; Product is ripe, and metering performance is reliable; Under the metering grade, moving flow of beginning, minimum flow are superior to dry type; If but after water quality inferiority or the use for a long time, the scale dish is prone to jaundice, blackout, has a strong impact on the copy reading data.The 3rd, liquid-sealing water meter: the reading part (digit wheel demonstration) of water meter counter is isolated with tested water; And enclosed in the reading box of the mixed liquor that is full of glycerine and pure water: this type of water meter can keep the dial plate indicating value clear; Reading never pollutes; Design in order to overcome wet-type meter specially, be applicable to relatively poor water quality; Liquid-sealing water meter had both had all advantages of wet-type meter, had overcome the fatal shortcoming of wet-type meter again, so many people have invented some liquid-sealing water meters, and own at home at present large-area use, open source literature has also been reported some, for example:
1. Chinese patent: modified form water meter, application number: CN200520112755.7, the applying date: 2005.06.28; Publication number: CN2793698; Open day: 2006.07.05, applicant: Shen Xingjia, address: Lu Liansheng Floor 3, Building in Chang'an, Dongguan City, Guangdong Province town three rings; Inventor: Shen Xingjia, summary: disclose a kind of modified form water meter.The last tops of this modified form water meter is fixed with fluid-tight dial plate or dry type dial plate; Its inside then is provided with driving gear set and digit wheel; Wherein, described digit wheel is positioned at corresponding fluid-tight dial plate of shell or dry type dial plate pars intermedia bit position, is provided with impeller or eccentric rotor in the main body; The mandrel of impeller or the rotating shaft of eccentric rotor are in the digit wheel below, and the driving gear in mandrel or the rotating shaft is through the engagement of the driven gear on driving gear set and the digit wheel.Because the mandrel of impeller or the rotating shaft of eccentric rotor are positioned at the digit wheel below, make digit wheel can move to the center position of fluid-tight dial plate or dry type dial plate; Simultaneously, impeller or eccentric rotor make this water meter integrate the advantage of dry type and wet-type meter, but have overcome dry type and the existing shortcoming of wet-type meter that still through driving gear set but not magnetic patch drives digit wheel rotates result of use is good.
2. Chinese patent: a kind of water meter character wheel box, application number: CN201010293539.2, the applying date: 2010.09.21; Publication number: CN101957223A; Open day: 2011.01.26, the applicant: the Anhui wing steps intelligence instrument company limited, the address: No. 168 scientific and technological industry garden, fragrant camphor tree main road, high and new technology industrial development zone, Hefei City, Anhui Province; Inventor: Guo Chunsong; Summary: a kind of water meter character wheel box is disclosed, comprise print wheel shaft, character wheel, be equipped with liquid the fluid-tight chamber, be arranged on chamber, the end, two optical-electric module wiring boards of character wheel box bottom, an end in chamber, the described end is provided with the side chamber that is connected with chamber, the end; Described two optical-electric module wiring boards wherein one be arranged in the chamber, the end, another piece vertically is arranged in the side chamber.Owing to adopt said structure, have the following advantages: 1, because chamber, the end and fluid-tight chamber are two separate cavitys, the fluid-tight chamber produces bubble for what seal so can avoid air to get into; 2, all be horizontally set on the bottom of character wheel box than two optical-electric module wiring boards in the past; Vertical setting of an optical-electric module wiring board in the side chamber; Reduced character wheel box bottom thickness, thereby made the character wheel box can be compatible mutually, increased its applicable surface with traditional water meter movement.
Yet; Finding in the production practices process for a long time through the inventor; More than disclosed patent exist some defectives, the one because character wheel box, electro-optical package and in gear drive is installed in two different cavitys respectively, make the complex structure of water meter counter; The 2nd, because gear drive need be crossed over two cavitys, cause the side leakage of spacer pad from the fluid-tight chamber; The 3rd, such liquid-sealing water meter can only be useful in the high zone of temperature or use warm season; Because in the season of cold winter, especially in 0 ° of zone, the north below the C, such fluid partitioning freezes in water meter; Tend to cause the watermeter shell explosion, make whole water meter scrap.Therefore, above defective becomes the technical barrier of the industry.
Summary of the invention
The object of the invention promptly is to provide a kind of and can overcomes the deficiency that prior art exists, full liquid-sealing water meter counter simple in structure.
To achieve these goals, full liquid-sealing water meter counter of the present invention comprises character wheel box, digit wheel and driving wheel; Digit wheel and driving wheel are installed in the character wheel box; It is characterized in that: described character wheel box also is provided with gear drive and photoelectric counter, the top of driving wheel and digit wheel engagement, and photoelectric counter is placed in the side or the bottom of digit wheel; In the cavity of character wheel box, be full of density insulation, the anticorrosion water white spacer pad lower than water; Photoelectric counter can whole bubble in spacer pad, saved the space of character wheel box greatly, gear drive by the impeller transmission after from the bottom output of character wheel box.
Be furnished with several projections by the annulus average mark on the end face of the great wheel of the lowest order digit of the above digit wheel; The end position gear and the projection interlock of gear drive; Tooth of gear revolution; Just stir a projection on the great wheel end face, make great wheel rotate a certain angle, other digit wheels are through the driving wheel transmission.
Above-described several projections are 9~18.
Compared with prior art, the beneficial effect of this full liquid-sealing water meter counter is:
1. reasonable in design, simple in structure.The present invention is because gear drive, digit wheel, driving wheel and photoelectric counter are installed in the character wheel box, so photoelectric counter is can whole bubble lower than water in density, water white spacer pad with insulation, antisepsis, gear is exported from character wheel box bottom; Because density isolating liquid is littler than water; Not only photoelectric counter leakproof in spacer pad has been avoided the spacer pad leakage, prevents that effectively impurity from getting in the character wheel box; Avoided electronic unit and character wheel contaminated; Saved the space, reduced the transmission resistance, water meter structure is simple.
2. the counting degree of accuracy is high.Because digit wheel is to adopt the gear structure transmission; Transmission is accurate, steadily, on the great wheel end face of the lowest order digit of digit wheel, is furnished with several projections by the annulus average mark; Tooth of gear revolution; Just stir a projection on the great wheel end face, the digit wheel of this great wheel just rotates a certain angle, and the degree of accuracy of the units that the water meter display panel shows reaches more than 0.1 m3.
3. wide adaptability.Because the present invention directly has been full of fluid partitioning in the cavity of character wheel box; Can overcome effectively that liquid in the character wheel box freezes and defective that character wheel can't be rotated; Avoided when freezing severe winter, the liquid volume that freezes increases and explosion takes place in the water meter, and this full liquid-sealing water meter counter does not receive the influence of Changes in weather; Not only be fit to use southern season in winter, especially be fit to the north and use under the situation abominable winter in cold.
Description of drawings
Fig. 1 is the main TV structure simplified schematic diagram of the full liquid-sealing water meter counter of the present invention.
Fig. 2 is the plan structure simplified schematic diagram of Fig. 1.
Fig. 3 be Fig. 1 look up the structural representation sketch.
Fig. 4 is A-A sectional structure simplified schematic diagram of Fig. 1.
Fig. 5 is B-B sectional structure simplified schematic diagram of Fig. 1.
Fig. 6 is position, end gear 8 and projection 7 occlusion structure simplified schematic diagram.
Parts title and sequence number among the figure:
Character wheel box 1, digit wheel 2, gear drive 3, display panel 4, spacer pad 5, driving wheel 6, projection 7, position, end gear 8, photoelectric counter 9, digit wheel box bottom 10, great wheel 11.
Embodiment
Below in conjunction with accompanying drawing and embodiment structure of the present invention is described.
Shown in accompanying drawing 1~5; Full liquid-sealing water meter counter of the present invention; Comprise character wheel box 1, digit wheel 2, gear drive 3, display floater 4, insulating liquid 5, driving wheel 6, projection 7, position, end gear 8, photoelectric counter 9, digit wheel box bottom 10 and great wheel 11; Display floater 4 is fixed on the character wheel box 1, and digit wheel 2, gear drive 3, driving wheel 7 and photoelectric counter 9 are all installed in the character wheel box 1, and driving wheel 6 is installed in the top of digit wheel 2 and is meshing with each other with digit wheel 2; Photoelectric counter 9 is installed in the side or the bottom of digit wheel 2; In the cavity of character wheel box 1, be full of the density water white insulating liquid 5 lower, prevented that effectively parts in the character wheel box are subjected to the pollution of external water impurity than water, gear drive 3 by the impeller transmission after from digit wheel box bottom 10 outputs of character wheel box 1; Be furnished with several projections 7 by the annulus average mark on the end face of the great wheel 11 of the lowest order digit of described digit wheel 2; Position, the end gear 8 and projection 7 interlocks of gear drive 3; Tooth of gear revolution; Just stir the projection 7 (referring to as shown in Figure 6) on great wheel 11 end faces, make great wheel 11 rotate a certain angle, other digit wheels 2 are by driving wheel 6 transmissions.
The principle of work of full liquid-sealing water meter counter:
The flow of water meter measures via the rotation of the impeller of movement, and the amount of spin of impeller is exported by worm gear, passes through gear drive 3 then; Projection 7 interlocks on position, the end gear 8 of gear drive 3 and the great wheel 11 of lowest order digit character wheel; Tooth of gear revolution is just stirred a projection 7 on great wheel 11 end faces, makes great wheel rotate a certain angle; The lowest order digit character wheel rotates 360 °; Other digit wheel 2 is driven by driving wheel 6 and carries out carry, and the data on the digit wheel 2 are read by photoelectric counter 9, show through display panel 4.