CN2711697Y

CN2711697Y - Aerovane type water meter with double flow way

Info

Publication number: CN2711697Y
Application number: CN 200420021994
Authority: CN
Inventors: 林志良
Original assignee: NINGBO DONGHAI GROUP CORP Ltd
Current assignee: NINGBO DONGHAI GROUP CORP Ltd
Priority date: 2004-04-16
Filing date: 2004-04-16
Publication date: 2005-07-20
Anticipated expiration: 2014-04-16

Abstract

The utility model relates to a water meter, in particular to an aerovane type water meter with double flow way comprising a watch case (1), a counting mechanism (2) and an indicating mechanism (3). The utility model is characterized in that a water strainer (4) is provided outside a casing (21) of the counting mechanism (2). At least one small through hole (24) is arranged on the side wall of the casing (21). Over one small flow holes (41) are arranged in the relevant position of the water strainer (4). The water current can pass through the small flow hole (41) on the water strainer (4) and can enter the small through hole (24) on the casing (21) of the counting mechanism (2), forming a relatively independent small circulation course. A high volume hole is arranged at the bottom of the water strainer (4). A valve core (5) which can seal the high volume hole is provided above the high volume hole, forming a relatively independent large circulation course. Compared with prior art, the utility model has the advantages that the metering course is divided into the large circulation course and the small circulation course through the matching of the water strainer, the valve core and the small through hole. Thus, the water meter also can correctly meter in condition of small water current. The metering range is enlarged. Meanwhile, the utility model has the advantages of simple structure, simple manufacture, no change for the casting and processing difficulty of the all-purpose watch case, easy implementation and low cost.

Description

A kind of rotary wind type double fluid path metering water meter

Technical field

The utility model relates to a kind of water meter, especially refers to a kind of rotary wind type double fluid path metering water meter.

Background technology

At present, the water meter that the resident is used for the tap water metering is rotor water gauge mostly, it generally includes watchcase and rotary wind type metering mechanism and indicating mechanism, the two ends of wherein said watchcase have water inlet and water delivering orifice, described metering mechanism is between the water-flowing path of water inlet and water delivering orifice, described indicating mechanism links to each other with the metering mechanism transmission, is provided with impeller in the housing of metering mechanism, and lower part of frame is provided with the inlet opening.During work, current flow into from the water inlet of watchcase, and enter metering mechanism and promote the impeller rotation, thus transmission indicating mechanism and indicate the flow of current, current flow out for people to use from the apopore of metering mechanism through the water delivering orifice of watchcase then.The water meter of this structure is because the influence of impeller frictional resistance, the insufficient sensitivity height of its transmission, and when current were tiny flow quantity, water flow impact pressure was too small, can not promote impeller, and water meter just can't be counted, and causes water supply department to be subjected to unnecessary economic loss.Therefore, the water meter that can measure tiny flow quantity is invented, and is that the Chinese utility model patent " a kind of high-precision measuring water meter " (notification number is CN2556599Y) of ZL02276025.3 discloses a kind of water meter that can measure water clock water as the patent No..This water meter is equipped with a retaining valve of being made up of spool, back-moving spring and spool bore seat in the water stream channel of inlet opening, in order to separate big current of water conservancy diversion and small current, form big circulation path and small circulation path respectively.When current were big, spool was opened, and current are walked from big circulation path, enter metering mechanism and normally count; When current were small, spool was closed, and the conduit of current from spool quickens through the fluidic conduit of spool bore seat and enter metering mechanism, promptly walked the current counting from the small circulation path.Because the retaining valve of this water meter is arranged on the inner face of water inlet, for better settling retaining valve and its to have the conduit of certain-length, the passage of its inlet end of water meter housing must have the length that matches, thereby just need to change the structure of original general water meter housing, redesign is cast, and has increased the difficulty of production and processing; And check valve apparatus is directly to link to each other with watchcase by the spool bore seat, causes watchcase inner structure complexity, strengthened manufacture difficulty and production cost, and it is extremely inconvenient to produce assembling, is difficult for implementing.

Summary of the invention

Technical problem to be solved in the utility model is that a kind of rotary wind type double fluid path metering water meter simple in structure, easy to implement, lower-cost is provided at above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this rotary wind type double fluid path metering water meter, comprise watchcase and rotary wind type metering mechanism and indicating mechanism, the two ends of wherein said watchcase have water inlet and water delivering orifice, described metering mechanism is between the water-flowing path of water inlet and water delivering orifice, described indicating mechanism links to each other with the metering mechanism transmission, be provided with impeller in the housing of metering mechanism, lower part of frame is provided with the inlet opening, it is characterized in that: the housing in described metering mechanism is covered with water strainer, on the housing sidewall of described metering mechanism, be provided with a small through hole at least, and, be provided with an above rill metering-orifice in the relevant position of described water strainer, make current pass rill metering-orifice on the described water strainer, can flow into the small through hole on the housing sidewall of described metering mechanism, form a relatively independent small circulation path; Simultaneously, described water strainer bottom is provided with big metering orifice, is provided with the spool that can seal described big metering orifice above described big metering orifice, forms a relatively independent big circulation path.

The big metering orifice of described water strainer bottom can be the reticulated cell that is recessed, and the impurity in so both can filtered water stream also can make the natural ring seal platform of formation in water strainer bottom, thereby make described spool can close big metering orifice.

Described reticulated cell centre can be provided with a column shape valve seat, and this valve seat is applied in the through hole of described center spool, and like this, spool will be with valve seat as central orbit and opening and closing, prevents that effectively spool from deviating from outside the track.

For reaching same purpose, also can offer a ring in described reticulated cell centre, a valve seat inserting that fuses with described spool is arranged in this ring, like this, spool just with this ring as central orbit and opening and closing.

For avoiding the impurity in the current to stop up the rill metering-orifice, guarantee that current can flow into the chamber at impeller place smoothly, the side of described water strainer is evenly distributed with the rill metering-orifice more than three on week, but because of the small through hole on metering mechanism's housing has only one, for reserving certain channel space in the periphery of giving described small through hole, realize being communicated with of described small through hole and a plurality of rill metering-orifices, the inboard of described water strainer upper edge is provided with a ring ladder groove, this ring ladder groove communicates with rill through hole on the described water strainer, makes this ring ladder groove become the circular passage that is communicated with the small through hole on described rill through hole and the metering mechanism's housing.

For better guaranteeing the unblocked of small circulation path, the side of described water strainer can be evenly distributed with four groups of rill metering-orifices on week, and every group is three rill metering-orifices.

Compared with prior art, advantage of the present utility model is the water strainer by setting up, the cooperation of small through hole on spool and the metering mechanism's housing, the metering path of current is divided into the size stream path, when current are big, current are to walk from big circulation path substantially, promptly the reticulated cell of bottom, the network of rivers is backed down spool automatically after filtration, the flow through inlet opening of metering mechanism's housing enters metering mechanism, normal metering, when current are small quantity, spool is because of pressure differential and the gravity of himself, can close the reticulated cell of water strainer bottom, current are walked from the small circulation path, and promptly the rill metering-orifice on the network of rivers enters the circular passage after filtration, then flow through on metering mechanism's housing small through hole and enter impeller place chamber, thereby realize the function that water meter also can correctly measure when current are small.The utility model has enlarged the measures range of water meter by the design of double-current path, and through actual test, when current were big, the existence in small circulation path can be ignored, and has certain metering precision; Simultaneously the utility model is simple in structure, and water strainer can adopt plastics to make, and processes simplely, and does not change the casting and the difficulty of processing of general water meter housing, thus easy to implement, cost is lower.

Description of drawings

Fig. 1 is the partial schematic sectional view of the utility model embodiment;

Fig. 2 is that the A-A of Fig. 1 is to partial schematic sectional view (amplification).

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1～shown in Figure 2, this rotary wind type double fluid path metering water meter, comprise watchcase 1, rotary wind type metering mechanism 2 and indicating mechanism 3, water strainer 4 and spool 5, wherein the two ends of watchcase 1 have water inlet 11 and water delivering orifice 12, described metering mechanism 2 is between the water-flowing path of water inlet 11 and water delivering orifice 12, and described indicating mechanism 3 links to each other with metering mechanism 2 transmissions, is provided with impeller 22 in the housing 21 of metering mechanism 2, the bottom of housing 21 is provided with inlet opening 23, referring to Fig. 1;

The housing 21 of described metering mechanism 2 is covered with described water strainer 4, its upper edge links to each other with the outward flange at these housing 21 middle parts, on housing 21 sidewalls of metering mechanism 2, be provided with a small through hole 24, and, on the water strainer relevant position in 4 side weeks, be evenly distributed with four groups of rill metering-orifices 41, every group is three, be provided with a ring ladder groove 42 in the inboard of water strainer 4, this ring ladder groove 42 communicates with described four groups of rill through holes 41, make this ring ladder groove 42 become the circular passage that is communicated with small through hole 24 on described rill through hole 41 and described metering mechanism 2 housings 21, thereby form a relatively independent small circulation path, referring to Fig. 1, Fig. 2;

Simultaneously, described water strainer 4 bottoms have the reticulated cell 43 that is recessed, and as big metering orifice, described spool 5 is arranged on this reticulated cell 43 tops, under these spool 5 closed conditions, spool 5 closes this reticulated cell 43, when this spool 5 is opened, and the bottom of metering mechanism 2 housings 21 of spool 5 by being positioned at its top and spacing, at this moment, inlet opening 23 on described reticulated cell 43 and metering mechanism's 2 housings 21 is communicated with, thereby forms a relatively independent big circulation path, referring to Fig. 1;

Offer a ring in described reticulated cell 43 centres, valve seat 51 insertings that fuse with this spool 5 are in this ring, referring to Fig. 1.

Claims

1, a kind of rotary wind type double fluid path metering water meter, comprise watchcase (1) and rotary wind type metering mechanism (2) and indicating mechanism (3), the two ends of wherein said watchcase (1) have water inlet (11) and water delivering orifice (12), described metering mechanism (2) is positioned between the water-flowing path of water inlet (11) and water delivering orifice (12), described indicating mechanism (3) links to each other with metering mechanism (2) transmission, be provided with impeller (22) in the housing (21) of metering mechanism (2), the bottom of housing (21) is provided with inlet opening (23), it is characterized in that: the housing (21) in described metering mechanism (2) is covered with water strainer (4), on housing (21) sidewall of described metering mechanism (2), be provided with a small through hole (24) at least, and, be provided with an above rill metering-orifice (41) in the relevant position of described water strainer (4), make current pass rill metering-orifice (41) on the described water strainer (4), can flow into the small through hole (24) on housing (21) sidewall of described metering mechanism (2), form a relatively independent small circulation path; Simultaneously, described water strainer (4) bottom is provided with big metering orifice, is provided with the spool (5) that can seal described big metering orifice above described big metering orifice, forms a relatively independent big circulation path.

2, rotary wind type double fluid path metering water meter according to claim 1 is characterized in that the big metering orifice of described water strainer (4) bottom is recessed reticulated cell (43).

3, rotary wind type double fluid path metering water meter according to claim 2 is characterized in that described reticulated cell (43) centre is provided with a column shape valve seat, and this valve seat is applied in the through hole at described spool (5) center.

4, according to the rotary wind type of claim 2 double fluid path metering water meter, it is characterized in that offering a ring, valve seat (a 51) inserting that fuses with described spool (5) is arranged in this ring in described reticulated cell (43) centre.

5, according to claim 3 or 4 described rotary wind type double fluid path metering water meters, the side that it is characterized in that described water strainer (4) is evenly distributed with the rill metering-orifice (41) more than three on week, the inboard of described water strainer (4) is provided with a ring ladder groove (42), this ring ladder groove (42) communicates with rill through hole (41) on the described water strainer (4), makes this ring ladder groove (42) become the circular passage that is communicated with the small through hole (24) on described rill through hole (41) and metering mechanism (2) housing (21).

6, rotary wind type double fluid path metering water meter according to claim 5 is characterized in that the side of described water strainer (4) is evenly distributed with four groups of rill metering-orifices (41) on week, and every group is three rill metering-orifices (41).