CN2747548Y

CN2747548Y - High-sensitivity rotary wing type switch water meter

Info

Publication number: CN2747548Y
Application number: CN 200420105258
Authority: CN
Inventors: 何芝财
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-26
Filing date: 2004-11-26
Publication date: 2005-12-21
Anticipated expiration: 2014-11-26

Abstract

The utility model relates to a high-sensitivity rotary wing type switch water meter, comprising a meter case, a water straining net, an impeller arranged in the impeller case, and a counter coaxially provided with the impeller. The water straining net is arranged above the water inlet opening of the inner cavity of the meter case, and the soleplate of the water straining net is provided with water inlet openings, and the periphery of the top of the water straining net is uniformly provided with water inlet openings. The interior of the water straining net is provided with an automatic valve block which covers all the water inlet openings of the soleplate of the water straining net. Besides, the high-sensitivity rotary wing type switch water meter is also provided with a guiding mechanism, along which the automatic valve block moves up and down. The position that on the side wall of the impeller case corresponds to the peripheral inlet openings of the top of the water straining net is also provided with a water inlet opening. The high-sensitivity rotary wing type switch water meter also has reaction to the small flow rate and count out, and has the characteristic of high sensitivity.

Description

High sensitivity rotary wind type switch water meter

One, technical field

The utility model relates to flow-meter, and particularly the mechanical type water meter is made the field.

Two, background technology

Existing rotor water gauge structurally shows as: a watchcase is arranged, and the watchcase inner chamber is provided with water strainer and impeller box (having the inlet opening on the impeller box), and impeller is installed in the impeller box, and counter is coaxial with impeller, be installed in the watchcase.During use, water flows into from the watchcase water inlet, enter the watchcase inner chamber through the fluid passage, enter impeller box again, the impulsion wheel rotation, impeller drives counter and rotates counting, counter arm indicates the discharge reading because in use, the flow area of the fluid passage that is made of all inlet openings on the water strainer remains constant, it is a steady state value, thereby this has just caused when discharge is very little, just can not impeller rotate, counter is not just counted, the tap that exists in the actual life drips and situation that water meter does not change, and the situation (the water meter poor sensitivity is one of them reason) that has caused the Running-water Company aspect can not conform at each submeter counting of summary table and user, its reason are summed up and be exactly: it is on the low side to have water meter sensitivity now.

Three, utility model content

The purpose of this utility model provides a kind of high sensitivity rotary wind type switch water meter, is intended to improve water meter sensitivity.The technical scheme that realizes this novel purpose is: a kind of high sensitivity rotary wind type switch water meter, comprise watchcase, water strainer, place the impeller of impeller box, counter with the coaxial setting of impeller, it is characterized in that, described water strainer is arranged on the top, inlet opening of watchcase inner chamber, spread all on the water strainer base plate to have on inlet opening, the water strainer top perimeter and be evenly equipped with the inlet opening, water strainer is built-in with an autovalve piece, and the autovalve piece is topped with all inlet openings of water strainer base plate; Also has the autovalve piece along its guiding mechanism that moves up and down; Position corresponding to water strainer top perimeter inlet opening on the described impeller box sidewall also has an inlet opening.

Above-mentioned guiding mechanism is: 4 sliding sleeves on the autovalve piece, respectively with water strainer in 4 travellers fit mutually.

Also be provided with a switch valve on the inlet opening in the above-mentioned watchcase inner chamber: valve seat is connected with the watchcase spiral, and valve rod is connected with the valve seat spiral, and push rod places the valve rod endoporus, and push rod top is fixed with an O-ring seal

From technique scheme, as current during through water meter, autovalve piece (its proportion is slightly larger than the proportion of water) during this is novel is dashed by water, upwards move in water strainer along guiding mechanism, the water yield is big more, and autovalve piece Top Runby is big more, and the flow area of fluid passage (being determined by all inlet openings on the water strainer base plate and autovalve piece and water strainer base plate height) is big more, the rotating speed of respective impeller is big, and the counting of counter is corresponding many.Under the normal condition that is in the normal water yield of general family expenses, this novel and existing water meter is similar, all can be according to the flow size, and corresponding reflection metering size.Under the very little situation of the water yield (as the water swivel situation of dripping), this novel autovalve piece do not dashed, still topped on the inlet opening of water strainer base plate, at this moment, water is from the inlet opening of water strainer top perimeter, an inlet opening on the impeller box sidewall enters in the impeller box again, owing to flow area reduces to be reduced into a hole greatly, the flow velocity of water is accelerated, and impeller is driven, and produces counting.In addition, this novel switch valve that is provided with can turn-off the current of the water meter of flowing through, as a kind of control device of water meter management side as Running-water Company.

Compare with existing rotor water gauge, this is novel to have following characteristics and advantage:

1, water meter is highly sensitive, and counting also can be reacted, be made to trickle dripping to water swivel.

2, have lock function, use specific purpose tool off switch valve, can turn-off the current of water meter.A kind of water meter management control device is provided for water supply side.

Four, description of drawings:

Fig. 1 is this novel wiring layout;

Fig. 2 is a shown in Figure 1 novel assembly relation synoptic diagram;

Fig. 3 Fig. 4 Fig. 5 is respectively front view, vertical view and the left view of watchcase shown in Figure 1;

Fig. 6 is the stereographic map of water strainer shown in Figure 1;

Fig. 7 is the stereographic map after water strainer shown in Figure 6 cuts away half;

Fig. 8 is the stereographic map of half water strainer shown in Figure 7 and autovalve piece shown in Figure 1.

Five, embodiment

Fig. 1 Fig. 2 illustrates, and watchcase 11 (referring to Fig. 3-5) is inner can be divided into water inlet by direction of flow, flow channel, and inner chamber 11a (Fig. 2), flow pass, water delivering orifice, the water inlet of watchcase and water delivering orifice are by same axis, setting vertically.Impeller 7 places in the impeller box 8, and is covered with counter box 6 on the coaxial counter 5 of impeller, and counter top surface is provided with glass plate 4, and watch glasses 2 is connected with watchcase 11 spirals, is lined with water proof ring 3 between the two, and table covers 1 and is hinged on the watch glasses.The inlet opening 11b (Fig. 2) of watchcase inner chamber 11a is provided with a switch valve: valve seat 15 is connected with the watchcase spiral, valve rod 14 is connected with the valve seat spiral, push rod 13 places the valve rod endoporus, (with direction shown in Figure 1 is benchmark on push rod top, be fixed with an O-ring seal 12 down together), valve rod 14 bottoms are the triangular prism shape, can use specific purpose tool, turn valve rod up (shutoff water meter) or descending (unlatching water meter).Above-mentioned valve rod 14, push rod 13, O-ring seal 12 constitutes spools, and valve rod and push rod also can make a single piece, and only during the turn valve rod, O-ring seal can rotate on the 11b of inlet opening thereupon, the generation friction loss; And this novel with valve rod and push rod as separation member, when the valve rod turn, push rod does not rotate thereupon, the O-ring seal maintenance is motionless, can prolong O-ring seal serviceable life.Referring to Fig. 6-8, water strainer 10 base plates (are dull and stereotyped, no radian) spreads all on and have inlet opening 10a, be evenly equipped with inlet opening 10b on the water strainer top perimeter, be provided with 4 traveller 10c in the water strainer, water strainer is fixedly installed on the inlet opening 11b top of watchcase 11 inner chamber 11a, be water strainer bottom with watchcase inner chamber 11a between the gapped 6mm of being about (among Fig. 1 bottom the water strainer should on move), autovalve piece 9 places in the water strainer, be installed with 4 sliding sleeve 9a on the autovalve piece, respectively with water strainer in 4 traveller 10c fit (also available three pairs of sliding sleeves, traveller) mutually.Automatic slider can adopt plastic production, wherein is embedded with iron plate, makes its proportion be slightly larger than water.Sliding sleeve 9a and traveller 10c are as guiding mechanism, and automatic slider can move up and down along traveller through sliding sleeve.This guiding mechanism also can adopt existing other frame mode as, a plate and a rectangle guide groove fit system etc.Referring to Fig. 1, have inlet opening 8b (as 3 oblique inlet openings) on the bottom surface of impeller box 8, the side has inlet opening 8c (as 6 rectangle inlet openings), and the position corresponding to water strainer 10 top perimeter inlet opening 10b on the sidewall of impeller box also has an inlet opening 8a.Under general flow situation, water is from the watchcase water inlet, through flow channel, the water inlet 11b (switch valve unlatching situation) of inner chamber 11a flows through, the water strainer base plate inlet opening of flowing through again, with autovalve piece jack-up,, promote impeller and produce counting after impeller box base plate inlet opening 8b and lateral inflow hole 8c enter.Under the very little situation of flow, can not wash the autovalve piece open, the autovalve piece is still topped on all inlet openings of water strainer base plate, the current of this moment are through the water strainer outside, through inlet opening at water strainer top and the inlet opening 8a (two inlet openings just in time are interconnected) on the impeller box sidewall, enter in the impeller box, promote impeller, produce counting.

The water inlet of the watchcase of (being installation direction) shown in Figure 1 and water delivering orifice are this novel vertical water meter by the vertical direction setting of same axis.

If use the horizontal water meter (axis of water inlet and water delivering orifice is by the horizontal direction setting) of this new structure still to belong to this novel protected scope.

Claims

1, a kind of high sensitivity rotary wind type switch water meter, comprise watchcase, water strainer, place the impeller of impeller box, counter with the coaxial setting of impeller, it is characterized in that, described water strainer (10) is arranged on the top, inlet opening (11b) of watchcase (11) inner chamber (11a), spread all on the water strainer base plate to have and be evenly equipped with inlet opening (10b) on inlet opening (10a), the water strainer top perimeter, water strainer is built-in with an autovalve piece (9), and the autovalve piece is topped with all inlet openings (10a) of water strainer base plate; Also has the autovalve piece along its guiding mechanism that moves up and down; Position corresponding to water strainer (10) top perimeter inlet opening (10b) on described impeller box (8) sidewall also has an inlet opening (8a).

2, switch water meter according to claim 1 is characterized in that, described guiding mechanism is: 4 sliding sleeves (9a) on the autovalve piece (9) respectively with water strainer (10) in 4 travellers (10c) fit mutually.

3, switch water meter according to claim 2, it is characterized in that, also be provided with a switch valve on the inlet opening (11b) in described watchcase (11) inner chamber (11a): valve seat (15) is connected with watchcase (11) spiral, valve rod (14) is connected with valve seat (15) spiral, push rod (13) places valve rod (14) endoporus, and push rod top is fixed with an O-ring seal (12).

4, switch water meter according to claim 3 is characterized in that, described valve rod (14) bottom is the triangular prism shape.

5, switch water meter according to claim 4 is characterized in that, also has the watch glasses (2) that is connected with watchcase (11) spiral, is lined with water proof ring (3) between watch glasses and the watchcase; Also be hinged with table lid (1) on the watch glasses.

According to the described switch water meter of the arbitrary claim of claim 1-5, it is characterized in that 6, the water inlet of described watchcase (11) and water delivering orifice are by same axis, setting vertically; The equal in the vertical direction of axis of the axis of described watchcase (11) inner chamber (11a) inlet opening (11b) and valve rod (14).