CN2755573Y

CN2755573Y - Double-directional supporting rotor watermeter

Info

Publication number: CN2755573Y
Application number: CN 200420060564
Authority: CN
Inventors: 何芝财
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-03
Filing date: 2004-08-03
Publication date: 2006-02-01
Anticipated expiration: 2014-08-03

Abstract

The utility model relates to a double-directional supporting rotor wing water meter, which is mainly composed of a meter housing, an impeller, a transmission mechanism, a transmission shaft and a magnetic force driving counter, wherein an inner cavity of the meter housing is lined with an inner housing, and the inside of the inner housing is fixed with a cover cap via a brace; the middle part of the cover cap is fixed with a metal core clamper; the utility model is also provided with a forward water inflow component which is arranged inside an inner cavity of the inner housing, and the forward water inflow is composed of an annular sleeve and a semi-spherical cover cap; the cover cap is fixed at the middle part of the annular sleeve via a brace, an arc-shaped outer convex surface of the cover cap faces a water inlet of the meter housing; the annular sleeve is embedded and sheathed on the inner wall surface of the inner housing; the middle part of the cover cap is fixed with a metal core clamper; both ends of an impeller shaft are respectively arranged on the two metal core clampers in an erecting way; the transmission mechanism is a worm transmission mechanism, and a worm is arranged on the impeller shaft; a worm wheel is installed on the transmission shaft. The utility model has the characteristics that the rotational resistance of the impeller shaft is small, the service life is long and the sensitivity of the water meter is high.

Description

Two-way brace type rotor water meter

One, technical field

The utility model relates to discharge metering instrument, particularly rotor water gauge and makes the field.

Two, background technology

Have now and revolve Ji formula water meter mainly by watchcase, impeller, gear train, be made up of through the counter of magnetically-actuated transmission shaft, during use, water enters from the watchcase water inlet, promote wheel rotation, through gear train transmission shaft is rotated, magnet fixing on the transmission shaft rotates simultaneously, is arranged on magnet on the counter shaft gear because magneticaction, rotate thereupon, thereby drive each counting gear gear train of counter, finally drive indicator of water gauge, indicate the discharge reading.Because impeller shaft is to be installed in the watchcase fluid passage with cantilevered fashion, form following defective: 1, the impeller shaft rotary resistance is bigger, thereby causes water meter initiating flow (minimum flow that water meter is rotated) bigger, and the sensitivity of water meter and measuring accuracy reduce.2, impeller shaft one end is concentrated stressed, owing to shoulder the bar effect, its support zone is stressed big especially, and in use, the parts of support zone are fragile, reduces serviceable life.3, impeller physical dimension is difficult to dwindle greatly, because the impeller shaft rotary resistance is bigger, thereby needs bigger fluid expulsive force, needs larger-size impeller.

Three, utility model content

The purpose of this utility model is to provide a kind of two-way brace type rotor water meter at prior art problems and weak point, with the rotary resistance that reduces impeller shaft, improve serviceable life.This novel purpose is achieved in that a kind of two-way brace type rotor water meter, comprise watchcase with entery and delivery port flange, impeller, impeller shaft, gear train is by the counter of transmission shaft through magnetically-actuated, it is characterized in that, lining has an inner casing on the described watchcase inner chamber, is fixed with a cover cap through tie rod in the inner casing, and it is top that the cover cap middle part is fixed with a metal; Also has the forward direction water inlet member that is arranged on the inner casing inner chamber, this water inlet member is made up of ring set and semisphere cover cap, and cover cap is solid at the ring set middle part through tie rod, and the arc evagination face of cover cap is towards the watchcase water inlet, ring set is nested on the inner casing internal face, and it is top that the cover cap middle part is fixed with a metal; Described impeller shaft two ends be erected at respectively two metals top on; Described gear train is a worm gearing: worm screw is arranged on the impeller shaft, and worm gear is installed on the described transmission shaft.

The main points of above-mentioned design be with the impeller shaft two ends be erected at respectively two metals top on, the arc evagination face of the semisphere cover cap of forward direction water inlet member is towards water inlet.When water when the watchcase water inlet flows into, the outer convex surface of the arc of this cover cap plays the dash shunting, make water around cover cap, flow through by forward direction water inlet member and inner casing, thereby impeller is rotated impeller shaft, worm screw on the impeller shaft (worm screw is processed at the rear portion of impeller shaft) drives the worm gear on the transmission shaft, thereby transmission shaft rotates, finally through the magnetically-actuated mechanical counter, and needle deflection and indicate meter reading.With cantilevered fashion impeller shaft being installed compares, the weight average of these novel whole wheel rotation parts is shared at the impeller shaft two ends, rotary resistance between impeller shaft and the supporting member reduces greatly, under identical situation, prolonged serviceable life, in addition, because the rotary resistance of impeller shaft reduces, the initiating flow of counter reduces, guaranteeing suitably to improve under the prerequisite of measuring accuracy, can reduce impeller weight, promptly under the same material situation, reduce impeller physical dimension as, this novel impeller overall dimensions reduce about half than existing water meter turbine.

Four, description of drawings:

Fig. 1 is this novel sectional view;

Fig. 2 is a watchcase shown in Figure 1, forward direction water inlet member, impeller, the assembling synoptic diagram of inner casing etc.;

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

Fig. 5 is the sectional view along the A-A line shown in Figure 4;

Fig. 6 Fig. 7 is the front view and the left view of inner casing shown in Figure 1 respectively;

Fig. 8 Fig. 9 is respectively the front view and the left view of forward direction water inlet member shown in Figure 1;

Figure 10 Figure 11 is that Figure 12 is respectively front view, left view (section) and the vertical view of impeller shown in Figure 1.

Five, embodiment

Fig. 1 Fig. 2 illustrates, and watchcase 6 left ends are the water inlet flange, and right-hand member is the water delivering orifice flange.Inner casing 4 linings are at the watchcase inner chamber, the inner casing front portion is (before with water inlet being, after water delivering orifice is, down with) bead that turns up arranged, as fixing with watchcase water inlet end face of flange, inner casing (employing plastics) is a reducer pipe, and its anterior diameter is slightly larger than the rear portion diameter, promptly constitute a shoulder, help fixing with the watchcase inwall.Join and Fig. 6 Fig. 7, cover cap 4a (preferably adopting semisphere) is fixed on inner casing 4 middle parts through tie rod, and cover cap 4a middle part is fixed with the top 4b of a metal, also is provided with bearing 4c on the cover cap 4a, makes transmission shaft 8 is installed is used.Referring to Fig. 8 Fig. 9, forward direction water inlet member 1 (plastic material) is made up of ring set and semisphere cover cap 1a, cover cap 1a is fixed on the ring set middle part through tie rod, the arc evagination face of cover cap 1a is towards the watchcase water inlet, cover cap 1a middle part is fixed with the top 1b of a metal, and ring set is nested on inner casing 4 internal faces, preferably, ring set adopts taper, and is fixed on the inner casing internal face through set screw 5.Impeller shaft 3 two ends are erected at respectively on the top 1b of two metals, the 4b; Worm screw is processed at the impeller shaft rear portion, and the worm gear (not shown) is installed on the transmission shaft 8.Impeller shaft adopts plastic production, and the impeller shaft both ends are embedded with copper sheathing, in order to the top 1b of metal, 4b suit.Referring to Figure 10-12, be evenly equipped with 12 helical teeth on the impeller 2, (also can adopt worm-gear toothing) usually can adopt the 8-16 tooth.In addition, counter box 13 is installed in off-axis position, watchcase 6 top, on (referring to Fig. 3-5) counter box glass plate 15 is arranged successively, pad 16, gland 17, table covers transmission shaft 8 upper ends such as 18 and are fixed with magnet cover 9, and copper covers 11, and (non magnetic material all can) be fixed in watchcase 6 open tops (Fig. 4) through screw 12.When water enters through the watchcase water inlet, around the semisphere cover cap of preceding water inlet member, flow through again, impulsion impeller (leaf changes in the axial direction, and thickness is 25mm), worm screw on the impeller drives the worm gear on the transmission shaft 8, transmission shaft 8 is rotated, and the magnet cover rotates thereupon, the magneticaction of the magnet of installing in 10 pairs of counters of magnet in the magnet cover, the axle of counter is rotated synchronously, finally indicate meter reading by pointer.

Claims

1, a kind of two-way brace type rotor water meter, comprise watchcase with entery and delivery port flange, impeller, impeller shaft, gear train is by the counter of transmission shaft through magnetically-actuated, it is characterized in that, lining has an inner casing (4) on described watchcase (6) inner chamber, is fixed with a cover cap (4a) through tie rod in the inner casing, and cover cap (4a) middle part is fixed with a metal top (4b); Also has the forward direction water inlet member (1) that is arranged on inner casing (4) inner chamber, this water inlet member is made up of ring set and semisphere cover cap (1a), cover cap (1a) is fixed on the ring set middle part through tie rod, the arc evagination face of cover cap is towards the watchcase water inlet, ring set is nested on inner casing (4) internal face, and cover cap (1a) middle part is fixed with a metal top (1b); Described impeller shaft (3) two ends are erected at respectively on two metals top (1b, 4b); Described gear train is a worm gearing: worm screw is arranged on the impeller shaft (3), and worm gear is installed on the described transmission shaft (8).

2, rotor water meter according to claim 1 is characterized in that, described inner casing (4) front portion has one as fixing the bead that turns up with watchcase (6) water inlet end face of flange; Described cover cap (4a) is a semisphere.

3, rotor water meter according to claim 2 is characterized in that, described inner casing (4) is a reducer pipe, and its anterior diameter is slightly larger than the rear portion diameter.

4, according to claim 1 or 2 or 3 described rotor water meters, it is characterized in that the ring set of described forward direction water inlet member (1) is the taper ring set, this ring set is fixed on inner casing (4) internal face through set screw (5).

5, rotor water meter according to claim 4 is characterized in that, described inner casing (4) and forward direction water inlet member (1) adopt plastic production.

6, rotor water meter according to claim 5 is characterized in that, described impeller shaft (3) adopts plastic production, the impeller shaft both ends are embedded with top with metal (1b, the 4b) copper sheathing of suit mutually.

7, rotor water meter according to claim 4 is characterized in that, is evenly equipped with 12 helical teeth on the described impeller (2), and impeller thickness in the axial direction is 25mm.