CN2153044Y

CN2153044Y - Rotary pendulum piston, volumetric water meter

Info

Publication number: CN2153044Y
Application number: CN 92241569
Authority: CN
Inventors: 陈瀛; 王留生; 陈栋栋
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-21
Filing date: 1992-11-21
Publication date: 1994-01-12
Anticipated expiration: 2002-11-21

Abstract

The utility model relates to a water meter which is provided with a rotary piston or an annular piston to measure water flow in a pipeline. A main drive assembly, a meter assembly, a support assembly, and a one way valve for preventing water being stolen are arranged in the water meter. The upper and lower housing ends of the water meter are connected (communicated) with the water pipeline through screw threads. The water meter can be arranged in the water pipeline in an upright type, in a horizontal type, and in an inclined type, the water meter is of window type digital display, and number can be directly read. The upper and lower housings of the water meter, which are iron pieces, are provided with outer screw threads. The iron upper and lower housings of the water meter and a copper sleeves which is additionally arranged and is provided with inner screw threads are in threaded connection. The utility model has the advantages of copper saving, no influence of the working performance of the water meter, no influence on disassembling and repairing the water meter, high metering precision class for the water meter, stable working performance, long service life, and freezing prevention.

Description

Rotary pendulum piston, volumetric water meter

The utility model relates to metered flow, especially is a kind of water meter that uses rotating piston or annular piston to come discharge in the measuring channel.

Along with industrial development, town dweller's living standard improve, need the water yield to increase year by year, the freshwater resources anxiety is felt in many cities.For guaranteeing to satisfy water supply, reasonable use of water, using water wisely, water using planning, water pipe department needs on the pipeline water route water meter to be set and measures.There is following weak point in water meter at present: 1, water meter can only level be installed on the pipeline water route, can not angle on demand install; 2, advanced water upstream vortes interference, when water meter is installed, needs before water inlet, to increase about 0.3m straight length and come the straightening current; 3, the metering grade of water meter does not reach the requirement of international standard " ISO/4064-C level "; 4, water meter is adjustable, and Running-water Company often was added in the consumption of " run, drip, leak " damage by water on the pipeline water route with on the account by adjusting water meter before water meter is installed, and did not embody fair, reasonable, principle of justice; 5, do not load onto the retaining valve of water-stealing-preventing in the water meter; 6, the upper and lower shell of water meter copper material, country is bigger because of producing the water meter copper consumption, its upper and lower shell is an iron piece, though have the material cost to hang down strong point, use one section after, because of corrosion can not be dismantled, be keeped in repair.

The purpose of this utility model is to avoid the weak point in the above prior art, installs and be provided with the rotary pendulum piston that can save the copper material, the volumetric water meter that retaining valve, the numeral of water-stealing-preventing are shown as direct-reading and a kind of measuring accuracy height is provided, need adjust, can stand in the pipeline perpendicular, level, inclination certain angle.

Task of the present utility model is achieved in that

Between the lower casing on this water meter (body) and go up to be between lower casing (body) and the waterpipe and be threaded, in lower casing (body), be provided with the retaining valve of water-stealing-preventing, be provided with the main assembly that drives; In upper casing (body), be provided with the support assembly of counter assembly and fixed count device assembly; Engagement counter assembly also can be installed external toothing counter assembly in can installing on counter assembly orientation; The material of upper and lower shell (body) can be copper material (cost height), can be engineering plastics (plastics jailization, serviceable life is short but cost is low), also can adopt low long service life of cost and dismounting, easy to maintenance iron piece---upper and lower shell (body) is all established external thread for iron piece, is connected with the copper sheathing of establishing internal thread that newly adds, and should remain with certain clearance (distance) after the installation of upper and lower casing termination portion.

Said rotary pendulum piston means the main rotary pendulum piston that drives in the assembly in the water meter lower casing (body), when this piston is worked in its cylinder barrel, rotation, oscillating motion is arranged simultaneously.

The utility model further specifies middle in conjunction with the accompanying drawings embodiment:

Fig. 1 is the general structure sketch of rotary pendulum piston, volumetric water meter,

Fig. 2 is the another kind of type of attachment structural drawing that " C portion " upper and lower casing connects among Fig. 1,

Fig. 3 is the shape figure of A-A section middle shell among Fig. 1,

Fig. 4 is the retaining valve enlarged drawing of " B portion " among Fig. 1,

Fig. 5, Fig. 6, Fig. 7 are main drive actions principle schematic top plan view in this water meter,

Fig. 8 is the main assembly structure sketch that drives in this water meter,

Fig. 9 is a support assembly structure diagram in this water meter,

Figure 10 is an interior engagement counter assembly master TV structure sketch in this water meter,

Figure 11 is an interior engagement counter assembly side-looking structure diagram in this water meter,

Figure 12 is an external toothing counter assembly structure sketch in this water meter.

In the diagram zero, parts and position sequence number thereof:

1, retaining valve, 2, lower casing, 3, the main assembly that drives, 4, support assembly, 5, the counter assembly, 6, the table lid, 7, upper casing, 8, the lid axle, 9, the internal thread copper sheathing, 10, the gap, 11, filter screen, 12, flow inlet in the main driving assembly, 13, dividing plate, 14, main water export in the assembly, 15 of driving, rotary pendulum piston, 16, cylinder barrel, 17, straight pin, 18, cylinder cap, 19, rotate fork, 20, shift fork, 21, inserts, 22, O-ring seal, 23, the gap, 24, spring, 25, voussoir, 26, movable voussoir, 27, counter assembly shell body, 28, needle dial, 29, character wheel, 30, sebific duct, 31, character wheel, 32, gear, 33, character wheel, 34, character wheel, 35, the character wheel frame, 36, O-ring seal, 37, print wheel shaft, 38, counter shell body lid, 39, O-ring seal, 40, spiral gear, 41, duplicate gear, 42, duplicate gear, 43, worm screw, 44, tooth rest, 45, axle, 46, jump ring, 47, gland, 48, the T-shaped shaft pertaining, 49, gear, 50, axle, 51, character wheel, 52, gear, 53, back-up ring, 54, jump ring, 55, packing ring, 56, print wheel shaft.

The principle of work and the course of work:

Rotary pendulum piston 15 is arranged on two-layer cylindrical shape---in the housing of cylinder barrel 16, formation flows with liquid, rotary pendulum piston 15 is in housing and rotatablely moves, 15 of its central shaft O and rotary pendulum pistons are as one, rotate simultaneously, it is one axial rectangular mouthful that its outer ring has, and is stuck on the dividing plate 13, rotates simultaneously and do radially to-and-fro movement with liquid flow.Axle O ' is an one with cylinder barrel 16.

The effect of the hydrodynamic pressure that rotary pendulum piston 15 owing to be subjected to flows into from inflow entrance 12 is flowed, and its central shaft O is along rotating along the direction of arrow in the garden week of cylinder barrel axle O '.Along with the inflow of inflow entrance 12 fluids, rotary pendulum piston 15 continues the pressurized rotation, and one side flow to the state of Fig. 6, and one side makes it to be full of rotary pendulum piston 15 opposite sides, and promptly the fluid of outflow side flows out through flow export 14.Again along with the fluid that inflow entrance 12 flows into continues rotation, one side makes the fluid of inflow be full of the space of inflow side to rotary pendulum piston 15 from Fig. 6 state, and one side becomes the state of Fig. 5 again through the state of Fig. 7.The rotary pendulum piston 15 that rotatablely moves is like this delivered to the outflow side to the fluid that is full of two-layer garden tube from the inflow side at the volley, as the measurement that is filled with water with measuring cup time time, the volume of the fluid that flows through with regard to energy measurement when the number of revolutions of the central shaft O that knows rotary pendulum piston 15.The rotation of the inserts 21 that piston 15 center upsides are pre-buried, and stir shift fork 20 rotations.Shift fork 20 drives the coupling joint that rotates fork 19, T-shaped shaft pertaining 48 compositions, drives worm screw 43, duplicate

gear

41,42 immediately successively, and spiral gear 40 reduces revolution.The print wheel shaft 45 that self spline of end of keeping right is associated in spiral gear 40 is along with rotation, gear 52 external tooths and character wheel 29 internal tooths on its left side is prefabricated often mesh, character wheel 29 is also just along with rotation, do not wait axially long special tooth against gear 32 both sides varying numbers, character wheel 29 rotates a circle, character wheel 31 just rotates 1/10 circle, according to as a same reason, character wheel 31 is turned right and is driven each character wheel one by one, until character wheel 33, character wheel 34, character wheel 29, character wheel 31, character wheel 33, character wheel 34 is formed 7 digit wheels altogether, every outer ring is divided into 10 five equilibriums, stamp 0 respectively, 1,2,3,4,5,6,7,8,90 numerals, character wheel 29, character wheel 31 is printed as redness, character wheel 33, character wheel 34 is printed as black, and expressed is exactly thousand, hundred, ten, individual (ton), hundred, ten, individual (liter), the limit of counter shell body 27 outer rings one side stamps 100 lattices again, and then each lattice is represented 0.1 liter.

Above mentioned " character wheel " means and is digital annular wheel on the external diameter.

Main drive the step lower edge that assembly 3 rises with cylinder barrel 16 upper ends and put O-ring seal 22, be placed on that internal orifice is by on last the step on the lower casing 2, soars in housing in its underpart; Counter assembly 5 fronts, promptly its counter housing 21 has rectangular protruding lens face, and O-ring seal 36 is embedded in the strip hole that upper casing 7 stays on the lens jacket, counter assembly 5 back, be tooth rest 44 bottom surfaces of counter assembly 5, and between upper casing 7 inwalls, support assembly 4 stretchings of packing into; The main rotation fork 19, the T-shaped shaft pertaining 48 that lean on them between assembly 3 and the counter assembly 5 of driving is coupled.

This rotary pendulum piston, volumetric water meter mainly are made up of upper casing 7, lower casing 2, counter, display panel, it is characterized in that this water meter is provided with:

A, in water meter lower casing 2, be provided with the main assembly 3 that drives, this assembly 3 is made of cylinder barrel 16, cylinder cap 18, rotary pendulum piston 15, dividing plate 13, rotation fork 19, shift fork 20, inserts 21, O-ring seal 22, straight pin 17, and the T-shaped shaft pertaining 48 that rotates in fork 19 and the counter assembly 5 is coupled.

B, in water meter upper casing 7, be provided with in engagement counter assembly 5, this assembly 5 is made of counter assembly shell body 27, needle dial 28, character wheel 29, sebific duct 30, character wheel 31, gear 32, character wheel 33, character wheel 34, character wheel frame 35, O-ring seal 36, print wheel shaft 37, counter shell body lid 38, O-ring seal 39, spiral gear 40, duplicate gear 41, the duplex number of teeth 42, worm screw 43, tooth rest 44, axle 45, jump ring 46, gland 47, T-shaped shaft pertaining 48

C, be provided with a support assembly 4 between the inwall of the tooth rest 44 of counter assembly 5 and upper casing 7, the movable voussoir 26 of this assembly 4 can make spring 24 horizontally slip to the stretching state along voussoir 25.

In water meter lower casing 2, be provided with the retaining valve 1 of a water-stealing-preventing, the front portion of retaining valve 1 is provided with filter screen 11, cylinder barrel 16.

Interior engagement counter assembly 5 places that are provided with in the said upper casing 7 also can change be made as external toothing counter assembly 5 ', this assembly 5 ' be made of gear 49, axle 50, character wheel 51, gear 52, back-up ring 53, jump ring 54, packing ring 55, print wheel shaft 56 is equipped with gear 52, character wheel 51 and is arranged on counter assembly shell body 27, the counter shell body lid 38 on the print wheel shaft 56.

Said upper and

lower shell

7,2 material also adopts when being threaded if be iron piece, for avoiding using the disadvantage that corrosion is dismantled not open after a section, can on the external diameter of iron piece upper casing 7, lower casing 2, increase a copper sheathing 9 that is provided with internal thread, external thread is connected respectively on the upper and lower shell of this copper sheathing internal thread and iron piece, but certain interval 10 should be possessed in the end of the upper and

lower shell

7,2 of this condition.

Good effect of the present utility model:

1, the metering precision grade height of this water meter, stable work in work, long service life;

2, this water meter can be vertical, horizontal on the waterway pipe, tilting installs;

3, in the water meter lower casing, be provided with the check valve of water-stealing-preventing;

4, this water meter is that the window type numeral shows, is direct-reading during reading;

5, but install these water meter indoor and outdoor, is not afraid of and freezes, and is Anti-freezing water meter;

6, the upper and lower shell of water meter is established external thread, adopt iron piece, need increase a next form that is threaded with the iron upper and lower shell of water meter of copper sheathing that is provided with internal thread, can economize on copper product, and do not influence the serviceability of water meter, do not influence dismounting, maintenance water meter yet.

Claims

1, a kind of rotary pendulum piston, volumetric water meter mainly are made up of upper casing 7, lower casing 2, counter, display panel, it is characterized in that this water meter is provided with:

A, in water meter lower casing 2, be provided with the main assembly 3 that drives, this assembly 3 is made of cylinder barrel 16, cylinder cap 18, rotary pendulum piston 15, dividing plate 13, rotation fork 19, shift fork 20, inserts 21, O-ring seal 22, straight pin 17, the T-shaped shaft pertaining 48 that rotates in fork 19 and the counter assembly is coupled

B, in water meter upper casing 7, be provided with in engagement counter assembly 5, this assembly 5 is made of counter assembly shell body 27, needle dial 28, character wheel 29, sebific duct 30, character wheel 31, gear 32, character wheel 33, character wheel 34, character wheel frame 35, O-ring seal 36, print wheel shaft 37, counter shell body lid 38, O-ring seal 39, spiral gear 40, duplicate gear 41, duplicate gear 42, worm screw 43, tooth rest 44, axle 45, jump ring 46, gland 47, T-shaped shaft pertaining 48

2, according to the described water meter of claim 1, it is characterized in that interior engagement counter assembly 5 places that are provided with in the said upper casing 7 also can change be made as external toothing counter assembly 5 ', this assembly 5 ' be made of gear 49, axle 50, character wheel 51, gear 52, back-up ring 53, jump ring 54, packing ring 55, print wheel shaft 56 is equipped with gear 52, character wheel 51 and is arranged on counter assembly shell body 27, the counter shell body lid 38 on the print wheel shaft 56.

3, according to claim 1,2 described water meters, it is characterized in that said upper and lower shell 7,2 material also adopts when being threaded if be iron piece, can on the external diameter of iron piece upper casing 7 lower casings 2, increase a copper sheathing 9 that is provided with internal thread, external thread is connected respectively on the upper and lower shell of this copper sheathing internal thread and iron piece, but certain interval 10 should be possessed in the end of the upper and lower shell 7,2 of this condition.

4, according to the described water meter of claim 1, it is characterized in that:

Be provided with the retaining valve 1 of a water-stealing-preventing in water meter lower casing 2, the front portion of retaining valve 1 is provided with filter screen 11, cylinder barrel 16.