CN1261743C - Compound box type water meter - Google Patents

Abstract

Disclosed is a water meter which can be precisely finished to eliminate an accuracy irregularity of a nozzle and can be manufactured easily. A lower inner case of the water meter in which an impeller for measurement is accommodated and which has the inflow nozzle formed in a lower part and a drain port formed in an upper part is divided (divided to three in the illustrated example). In the drawing, the divided type lower inner case 20 is constituted by holding a central member 40 having the inflow nozzles 42 and drain ports 43 from upper side and lower side by an upper member 30 that functions as a lid for the drain ports and serve to position an upper case and a lower member 50 that has a function of a bottom part and a function of adjusting flow resistance at the bottom. Since the lower inner case is dividedly manufactured, the manufacture is facilitated and the inflow nozzle part can be finished precisely. Also a plurality of members can be molded by a single mold.

Description

Compound box type water meter

Technical field

The present invention relates on the impeller in the inner box, make the impeller rotation from the current collision that a plurality of nozzles tangentially eject under being arranged at, this rotation is delivered to display part, the improvement of the compound box type water meter of the water yield is passed through in accumulative total and demonstration.

Background technology

In order easily to understand the present invention, the basic formation of expression compound box type water meter in Fig. 1.In the drawings, the nowel that 1 expression tap water flows, 2 expression filtrators, inner box is gone up in 3 expressions, 4 expressions are inner box down, and 5 expressions are arranged at down the impeller in the inner box, 6 expression rotating shafts, the rotating gear mechanism of 7 expression transmission portion, the display part of 8 expression digit wheels etc., the glass of 9 presentation surfaces.

Tap water flows into as shown by arrow F like that, advance as shown by arrow G like that, enter down in the inner box from the flow nozzle 42 of the below of the casing 41 that is arranged at down inner box 4, make impeller 5 rotations, flow out to case outside from the escape hole 43 of top and also flow as shown by arrow H like that.

Fig. 2 is the existing sectional side view of inner box 4 down, Fig. 3 is the A-A sectional view of Fig. 2, and Fig. 4 is the B-B sectional view of Fig. 2, and existing down inner box 4 is that the casing 41 by one constitutes, a plurality of flow nozzles 42 are set below casing 41, a plurality of escape holes 43 are set in addition up.

Foregoing existing down inner box, owing to constitute integratedly as a whole, complex structure is made difficulty, the Precision Machining difficulty of nozzle can't avoid can not preventing to have on the nozzle precision shortcoming of error.

Summary of the invention

The present invention is in order to eliminate aforesaid shortcoming, invented a kind of compound box type water meter, it is characterized in that, the following inner box of accommodating the impeller that the metered flow water yield uses is by constituting in conjunction with upper part, lower part from the central unit that is inserting and putting up and down, this central unit is forming flow nozzle and escape hole, this upper part has function and the positioning function of past upper tank, the function bottom this lower part has and the adjustment function of following impedance of the lid of flow export.

Description of drawings

Fig. 1 is the structure of expression compound box type water meter.

Fig. 2 is the existing sectional view of inner box down.

Fig. 3 is the A-A sectional view of Fig. 2.

Fig. 4 is the B-B sectional view of Fig. 2.

Fig. 5 is the stereographic map that inner box down of the present invention is separately represented.

Fig. 6 is the stereographic map of upper part.

Fig. 7 is a vertical view of seeing Fig. 6 from the D direction.

Fig. 8 is the A-A sectional view of Fig. 7.

Fig. 9 is the B-B sectional view of Fig. 7.

Figure 10 is the stereographic map of central unit.

Figure 11 is a vertical view of seeing Figure 10 from the D direction.

Figure 12 is a upward view of seeing Figure 10 from the R direction.

Figure 13 is the A-A sectional view of Figure 11.

Figure 14 is the B-B sectional view of Figure 11.

Figure 15 is the C-C sectional view of Figure 12.

Figure 16 is the stereographic map of lower part.

Figure 17 is the vertical view of lower part.

Figure 18 is the B-B sectional view of Figure 17.

Embodiment

Fig. 5 is that the central unit 40 of expression inner box 20 down of the present invention reaches from inserting and putting the stereographic map that central unit 40 carries out the upper part 30 and the lower part 50 of combination up and down.On central unit 40, forming flow nozzle 42 and escape hole 43.Inserting and putting this central unit 40 and constituting inner box 20 down from the lower part 50 that is pushed down into upper part 30 and formation case bottom.

The following protrusion tab 32 of the framework 31 of upper part 30 be pressed into central unit 40 above, become the lid of escape hole 43, in addition, be pressed into the recess 45 that is provided with on the nozzle forming body 44 of central unit 40 by the top protrusion tab 52 with the framework 51 of lower part 50, lower part 50 forms the bottom of inner box 20 down.

Fig. 6 is a stereographic map of upper part 30 being compared the expression of changing direction with Fig. 5, Fig. 7 is the vertical view of Fig. 6 of seeing from the D direction, Fig. 8 is the A-A sectional view of Fig. 7, Fig. 9 is the B-B sectional view of Fig. 7, the 31st, the framework of upper part 30, the 32nd, the protrusion tab that is pressed into above the central unit 40 described later, the left side of Fig. 8 is top, the right side be join with central unit 40 below.

Figure 10 is with identical towards the stereographic maps of representing central unit 40 with upper part 30 shown in Figure 6, Figure 11 is a vertical view of seeing Figure 10 from the D direction, Figure 12 is a upward view of seeing Figure 10 from the R direction, Figure 13 is the A-A sectional view of Figure 11, Figure 14 is the B-B sectional view of Figure 11, and Figure 15 is the C-C sectional view of Figure 12.The 42nd, flow nozzle, the 43rd, escape hole, the 44th, form the organizator of flow nozzle, the 45th, be arranged at the recess of organizator, the 46th, the pin insertion section, the 47th, the wall portion around escape hole 43 sides, the 48th, be arranged at the recess in the wall portion 47.

Join below the upper part 30 on the top and right side that is in Fig. 8 of the central unit 40 shown in Figure 11, the protrusion tab 32 of upper part 30 is pressed into the recess 48 above the central unit shown in Figure 11 40, and upper part 30 is combined with central unit 40.

Figure 16 is the stereographic map of lower part 50, and Figure 17 is its vertical view, and Figure 18 is the B-B sectional view of Figure 17, represents that respectively 51 is frameworks, the 52nd, and protrusion tab, the 53rd, pin, the 54th, the reinforcement of framework 51.

The central unit top with shown in Figure 12 40 of this lower part 50 following relative, the recess 45 by protrusion tab 52 being pressed into central unit 40, will sell 53 pressure pin insertion sections 46 and on central unit 40 in conjunction with lower part 50.

In the bottom of lower part 50 inner box 20 under forming, reinforcement 54 makes and enters down current in the inner box 20 from flow nozzle 42 and can contact impeller equably and bringing into play the function that makes water become turbulent following impedance.Pin 53 can be regulated down positioning functionally of impedance when lower part 50 is combined with central unit 40.

In addition, as having recess 49 above Fig. 7 and the parts up 30 shown in Figure 9, will descend inner box 20 above being installed on during inner box 3, carry out the two location with the tab that is arranged at inner box.In view of the above, when the assembling table, can positively settle to same direction.The following impedance that produces at the reinforcement by lower part 50 is provided with reinforcement and forms impedance below last inner box 3 in addition.

Narrated in the above description and will descend inner box to be divided into three sections embodiment, the present invention is defined in this, and the position of cutting apart number, central unit can be any, and associated methods also can adopt arbitrary method such as welding, joint in addition.

Compound box type water meter of the present invention has foregoing formation, because down inner box is by being cut apart the formation of back combination, each constitutes simply makes easily, flow nozzle Precision Machining accurately can be able to be eliminated the error of measuring accuracy.When making divided each parts, can once form many in addition, can make very expeditiously with 1 mould.Owing to can decompose, after recovery, can decompose again and utilize in addition.

Claims (1)

1. a compound box type water meter is characterized in that, the following inner box (20) of accommodating the impeller that the metered flow water yield uses is made of following parts:

(a) be formed with the central unit (40) of flow nozzle (42) and escape hole (43);

(b) upper part (30) forms escape hole (43) by the top that is attached to above-mentioned central unit (40), and this upper part is made of the framework (31) that has by being pressed into the protrusion tab (32) that inner box positions;

(c) lower part (50) constitutes the bottom of flow nozzle (42) and following inner box (20) by the bottom that is attached to above-mentioned central unit (40), and has under the formation impedance in above-mentioned bottom with reinforcement (54).

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