CN2427796Y

CN2427796Y - Improved two direction measuring water meter

Info

Publication number: CN2427796Y
Application number: CN 00214920
Authority: CN
Inventors: 王新华
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-26
Filing date: 2000-05-26
Publication date: 2001-04-25
Anticipated expiration: 2010-05-26

Abstract

The utility model relates to a two direction measuring water meter, which is characterized in that a water inlet hole is arranged at a portion of a lower clamping plate corresponding to a water inflow cavity. Water can normally flow through the meter; simultaneously, some water enters between an upper clamping plate and the lower clamping plate via the water inlet hole of the lower clamping plate, then flows into a flow-rate cavity via a through hole which is positioned on the lower clamping plate and is used for a gear to pass through, and flows into a container via a water outlet cavity; the water can not cause a pointer to forwards rotate. The water in the container is easy to run off through modes of evaporation, etc.; the volume of the water running off is equal to the volume of the water injected in the container in the modes of evaporation, etc.; the volume of the residual water in the container is equal to the volume of the water represented by numbers on a dial plate pointed by the pointer after forwards measured. Thus, the pointer can return to a zero position when reverse measurement is finished.

Description

Improved bidirectional watermeter

The utility model provides a kind of improved bidirectional watermeter, relates to the measuring instrument technical field of tap water flow.

Chinese patent 98250805.0 (Granted publication number for CN2357315Y) provides a kind of " bidirectional watermeter ", this water meter comprises that from top to down is encapsulated in the transparent panel between loam cake and drain pan, pointer, index dial, train wheel bridge, gear reduction, lower plate, power input shaft, impeller shaft, gear reduction is fixed between train wheel bridge and the lower plate, from top to down is provided with gear and impeller on the power input shaft, the final stage output shaft of gear reduction and pointer socket, the bottom of drain pan is provided with the horizontal water inlet tap of coaxial line symmetrically, faucet, bottom in the drain pan is interconnected and symmetrically arranged intake antrum, the flow chamber, water chamber, the inner mouth of a river sectional area of intake antrum is identical with the inner mouth of a river sectional area of water chamber, impeller shaft vertically is installed on the drain pan bottom surface in the flow chamber, impeller places the flow chamber and is sleeved on the impeller shaft, uniform identical blade more than 3 on the impeller, symmetric profile during blade adopts.This water meter can be used on the occasion that needs bidirectional measuring (as the process of water up and down of domestic solar water heater's water tank and resident's roof water tank etc.), can not return zero-bit phenomenon (this phenomenon is more outstanding in summer) but this water meter is prone to pointer when oppositely metering finishes.Cause this phenomenon former because: because of water filling in tank is carried out the forward metering and grow (generally between 6-12 hour) interval time of oppositely measuring of fetching water in tank, water in the tank easily runs off by evaporation and overflow mode, making people pass through this water meter fetches water in tank, when oppositely measuring, the volume potential of water must be less than tank internal volume (the tank internal volume equals the water volume that forward metering backpointer points to digital representative on the index dial) in the tank, like this, the volume in water reverse direction flow inflow-rate of water turbine chamber is less than the volume in positive flow inflow-rate of water turbine chamber, what make impeller is rotated counterclockwise the number of turns less than the number of turns that turns clockwise, the reverse angle that causes pointer is less than positive gyration, thereby, water has been put in tank, when oppositely metering finishes, be prone to pointer and can not return the zero-bit phenomenon, the existence of this phenomenon will have a negative impact to the later bidirectional measuring order of accuarcy of this table.

Pointer can return the bidirectional watermeter of zero-bit when the purpose of this utility model was to provide a kind of reverse metering to finish.

The purpose of this utility model is achieved through the following technical solutions;

Improved bidirectional watermeter, it comprises that from top to down is encapsulated in the transparent panel 2 of 15 of loam cake 1 and drain pans, pointer 4, index dial 5, train wheel bridge 6, gear reduction, lower plate 10, power input shaft 12, impeller shaft 16, gear reduction is fixed between train wheel bridge 6 and the lower plate 10, from top to down is provided with gear 13 and impeller 14 on the power input shaft 12, the final stage output shaft 8 and pointer 4 sockets of gear reduction, the bottom of drain pan 15 is provided with the horizontal water inlet tap 15a of coaxial line symmetrically, faucet 15b, bottom in the drain pan 15 is interconnected and symmetrically arranged intake antrum 15f, flow chamber 15g, water chamber 15h, the inner mouth of a river sectional area of intake antrum 15f is identical with the inner mouth of a river sectional area of water chamber 15h, impeller shaft 16 vertically is installed on interior drain pan 15 bottom surfaces of flow chamber 15g, impeller 14 places flow chamber 15g and is sleeved on the impeller shaft 16, uniform identical blade more than 3 on the impeller 14, symmetric profile during blade adopts, its design feature is: have corresponding to intake antrum 15f place on the lower plate 10 and say water hole 10c.

After adopting above structure, owing to have inlet opening 10c corresponding to intake antrum 15f place on the lower plate 10, so passing through the water filling in tank of this water meter, when carrying out the forward metering, some water flow in the tank through water chamber 15h after intake antrum 15f forward flows among the 15g of flow chamber again, the impeller 14 that is positioned at flow chamber 15g is rotated by the forward impetus of waterpower, the gear 13 of impeller 14 tops forces the final stage output shaft 8 of gear reduction to rotate, pointer 4 will just change thereupon, and other water just enter between train wheel bridge 6 and the lower plate 10 through the inlet opening 10c on the lower plate 10, the through hole 10b that passes for gear 13 on lower plate 10 flows among the flow chamber 15g after in the water chamber 15h inflow tank again, these water no longer produce the forward impetus to impeller 14, that is can not cause pointer 4 just changeing, pointer 4 is just changeing the water volume of pointing to digital representative on the index dial 5 and is only equaling the volume that forward promoted those water of impeller 14, fills with water in tank, when the forward metering finishes, water volume in the tank will be (certain greater than the water volume of the digital representative of pointer 4 sensings, in advance when setting representative water volume that forward metering backpointer 4 points to digital, should make this numeral suitably less than the content product of tank, this numeral can record according to the internal volume of tank and actual notes water intaking test); When in tank, fetching water by this water meter, when oppositely measuring, water in the tank flows out through intake antrum 15f after water chamber 15h reversed flow enters among the 15g of flow chamber again, the impeller 14 that is positioned at flow chamber 15g is rotated by the reverse impetus of waterpower, the gear 13 of impeller 14 tops forces the final stage output shaft 8 of gear reduction to rotate, pointer 4 will reverse thereupon, to carry out the interval time that forward metering and water intaking in tank oppositely measure longer because of water filling in tank, the water that has injected tank is easily by evaporation, the overflow mode runs off, the volume of loss water injects tank in the above described manner when equaling the forward metering, impeller 14 is not produced the volume of those water of forward impetus, make that the volume of surplus water equals the volume that forward metering backpointer 4 points to the water of digital representative on the index dials 5 in the tank, so just the water volume with positive flow inflow-rate of water turbine chamber 15g is identical for the water volume of reverse direction flow inflow-rate of water turbine chamber 15g, make impeller 14 to be rotated counterclockwise the number of turns identical with the number of turns that turns clockwise, cause the reverse angle of pointer 4 identical with positive gyration, thereby water has been put in tank, when oppositely metering finishes, pointer 4 can return zero-bit, has overcome at one stroke existing water meter and has oppositely measured the defective that pointer when finishing can not return zero-bit.

Description of drawings:

Fig. 1 is the axonometric exploded view of the utility model embodiment;

Horizontal backing plate, the joining structural representation of drain pan in Fig. 2 present embodiment.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing thereof:

Referring to Fig. 1, Fig. 2:

Transparent panel 2, lining ring 3, pointer 4, index dial 5, train wheel bridge 6, gear reduction, lower plate 10, horizontal backing plate 11, power input shaft 12, impeller shaft 16 from top to down are encapsulated in 15 of loam cake 1 and drain pans,

The self structure of loam cake 1 and identical with existing water meter with the connected mode of drain pan 15, drain pan 15 is that the upper end is uncovered, the hollow cylinder of lower end closed, bottom surface in the drain pan 15 is provided with preceding supporting station 15d, the back supporting station 15e that is separated from each other, the medial shaft of preceding supporting station 15d is faced directly by the plane, left side that is symmetrical set, middle more than half outer protruding cylinder surface, plane, right side and is constituted, the axis of the axis runout drain pan 15 of more than half outer protruding cylinder surfaces, the upper side edge that the medial shaft of preceding supporting station 15d is faced directly is shaped as

Shape, be provided with a locating convex block 15i near more than half outer protruding cylinder surfaces in the central region on preceding supporting station 15d surface, the medial shaft of back supporting station 15e is faced the oval cambered surface into evagination directly, there is a recessed step 15j on back supporting station 15e surface near the inboard of impeller shaft 16, and the upper side edge that the medial shaft of step 15j is faced directly is shaped as Shape, for alleviating the weight of this water meter, reduce manufacturing cost, can be with preceding supporting station 15d, the middle part of back supporting station 15e hollows out, the inwall middle part of drain pan 15 is provided with vertical positioning convex strip 15c, the lower end of raised line 15c is positioned at the outer side surface of back supporting station 15e, the length of raised line 15c equals train wheel bridge 6, the distance that lower plate is 10, be used for hiding intake antrum 15f, flow chamber 15g, the horizontal backing plate 11 of water chamber 15h is positioned at the preceding supporting station 15d that lower plate 10 belows and load are placed on drain pan 15, on the back supporting station 15e, horizontal backing plate 11 is roughly circle, the one pit 11a that can match with locating convex block 15i is arranged on the outer rim of its front side, the upper side edge shape of its rear side vertical plane is identical with the upper side edge shape that step 15j medial shaft is faced directly, locating convex block 15i is stuck among the pit 11a on the horizontal backing plate 11, the rear lateral portion card of horizontal backing plate 11 is placed on the step 15j, make that horizontal backing plate 11 is unlikely to rotate and circumferentially located, the degree of depth of step 15j, the height of locating convex block 15i, the thickness of horizontal backing plate 11 is identical, the surface of supporting station 15e after making, the surface of horizontal backing plate 11, the surface of locating convex block 15i is in the same surface level

On the lower plate 10 except that having the 10c of inlet opening corresponding to intake antrum 15f place, lower plate 10, train wheel bridge 6, the self structure and the mutual connected mode that are fixed on gear reduction three between the two are all identical with existing water meter, gear reduction still adopts 7 grades of ways of deceleration of existing water meter, have the through hole 10b that can supply gear 13 to pass on the lower plate 10, be respectively equipped with on the outer rim of train wheel bridge 6 and lower plate 10 and can match with positioning convex strip 15c and corresponding up and down pit 6a, pit 10a, being fixed with the train wheel bridge 6 of gear reduction and lower plate 10 places in the drain pan 15 and by lower plate 10 loads and is placed on back supporting station 15e, horizontal backing plate 11, on the locating convex block 15i, positioning convex strip 15c in the drain pan 15 is stuck in train wheel bridge 6, pit 6a on the lower plate 10, among the pit 10a, make train wheel bridge 6, gear reduction, lower plate 10 is unlikely to rotate and is circumferentially located, have on the horizontal backing plate 11 can with the corresponding inlet opening 11c of the inlet opening 10c on the lower plate 10, have the through hole 11b that can supply gear 13 to pass on the horizontal backing plate 11, lower plate 10, the bottom surface of horizontal backing plate 11 and drain pan 15, the medial shaft of preceding supporting station 15d is faced directly, the medial shaft of back supporting station 15e has constituted the intake antrum 15f that is interconnected and is symmetrically arranged between facing directly, flow chamber 15g, water chamber 15h, the purpose that horizontal backing plate 11 is set is to improve lower plate 10 for intake antrum 15f, flow chamber 15g, the sealing property of water chamber 15h, the horizontal water inlet tap 15a of coaxial line, faucet 15b left and right symmetrically is arranged on the outer wall bottom of drain pan 15, the outer end of intake antrum 15f is connected with water inlet tap 15a, the outer end of water chamber 15h is connected with faucet 15b, the inner mouth of a river sectional area of intake antrum 15f is identical with the inner mouth of a river sectional area of water chamber 15h, impeller shaft 16 vertically is installed in the more than half outer protruding cylinder surface coaxial line in facing directly on interior drain pan 15 bottom surfaces of flow chamber 15g and with preceding supporting station 15d medial shaft

The lower end from top to down of power input shaft 12 is provided with gear 13 and impeller 14, three's self structure is identical with existing water meter, through hole 11b is passed in the upper end of power input shaft 12, after the locating piece 7 of through hole 10b and train wheel bridge 6 belows is pegged graft, gear 13 is also along with passing through hole 11b, through hole 10b still with first transmission shaft on gear wheel engagement in the duplicate gear 9, make gear reduction and gear 13 interlocks, 7 of power input shaft 12 and locating pieces, gear 13 is all identical with existing water meter with connected mode between gear reduction, uniform 7 identical blades on the impeller 14, symmetric profile during blade adopts, impeller 14 places flow chamber 15g and is sleeved on the impeller shaft 16

Being printed on the scale mark and the corresponding digital index dial 5 that show water volume overlays on the train wheel bridge 6, the outer rim upper edge of index dial 5 is uniform 20 pilot hole 5a circumferentially, final stage output shaft 8 upper ends of gear reduction are passed train wheel bridge 6 successively, index dial 5 backs are with pointer 4 inner sockets and can drive pointer 4 rotations, transparent panel 2 is contained in the loam cake 1, the inner cylinder face of lining ring 3 is provided with the 3a of showing rod that stops pointer 4, there is a reference column 3b that can match (certainly on the bottom surface of lining ring 3 with pilot hole 5a, this reference column 3b also can be located at lining ring 3 bottom surfaces near showing rod 3a place, and make reference column 3b be in lining ring 3 vertical axis, in the vertical plane that the 3a of showing rod constitutes), when this water meter of assembling, the 3a of showing rod is directly aimed at the respective digital on the index dial 5, insert among the positioning hole corresponding 5a by reference column 3b again and be placed on the index dial 5 with just can making lining ring 3 stationkeeping, like this, when the loam cake 1 that has a transparent panel 2 spins with drain pan 15, can not make lining ring 3, index dial 5 relatively rotates, as seen, compare with existing water meter, the 3a of showing rod of lining ring 3 is easy to aim at respective digital on the index dial 5, effectively reduce assembly difficulty, the interval time of considering water filling and water intaking is longer, water in the tank is the reason of loss easily, pointer can return zero-bit when finishing for guaranteeing oppositely to measure, the 3a of showing rod point to the water volume of respective digital representative on the index dial 5 should be suitably less than the internal volume of tank, this numeral can record according to the internal volume of tank and actual notes water intaking test, when pointer 4 reclines with the 3a of showing rod, show in the tank fills with water, power input shaft 12 still is 10000: 1 with the rotating ratio of final stage output shaft 8.

When by the water filling in tank of this water meter, carry out forward when metering, some water are entered between train wheel bridge 6 and the lower plate 10 through the inlet opening 11c on horizontal backing plate 11, the lower plate 10, inlet opening 10c, through hole 10b on lower plate 10, horizontal backing plate 11, through hole 11b flow among the flow chamber 15g after in the water chamber 15h inflow tank again, these water do not produce the forward impetus to impeller 14, that is can not cause pointer 4 just changeing, when in the tank during fills with water, the water volume in the tank will be pointed to the water volume of digital representative greater than pointer 4; The water that has injected tank easily runs off by evaporation, overflow mode, the volume of loss water equals the volume that the forward metering time is injected tank in the above described manner, can not caused those water that pointer 4 just changeing, make that the volume of surplus water equals the volume that forward metering backpointer 4 points to the water of digital representative on the index dials 5 in the tank, thereby when water in the tank has been put, when reverse metering finishes, pointer 4 can return zero-bit.

For the purpose of clearly demonstrating problem, the O-ring seal that will be contained in the loam cake 1 among Fig. 1, is between transparent panel 2 and the lining ring 3 is omitted.

Claims

1, improved bidirectional watermeter, it comprises that from top to down is encapsulated in the transparent panel (2) between loam cake (1) and drain pan (15), pointer (4), index dial (5), train wheel bridge (6), gear reduction, lower plate (10), power input shaft (12), impeller shaft (16), gear reduction is fixed between train wheel bridge (6) and the lower plate (10), power input shaft (12) is gone up from top to down and is provided with gear (13) and impeller (14), the final stage output shaft (8) of gear reduction and pointer (4) socket, the bottom of drain pan (15) is provided with the horizontal water inlet tap (15a) of coaxial line symmetrically, faucet (15b), bottom in the drain pan (15) is interconnected and symmetrically arranged intake antrum (15f), flow chamber (15g), water chamber (15h), the inner mouth of a river sectional area of intake antrum (15f) is identical with the inner mouth of a river sectional area of water chamber (15h), impeller shaft (16) vertically is installed on interior drain pan (15) bottom surface, flow chamber (15g), impeller (14) places flow chamber (15g) and is sleeved on the impeller shaft (16), impeller (14) is gone up uniform identical blade more than 3, symmetric profile during blade adopts is characterized in that: lower plate (10) is gone up and is located to have inlet opening (10c) corresponding to intake antrum (15f).

2, improved bidirectional watermeter according to claim 1, it is characterized in that: being positioned at lower plate (10) below place in the drain pan (15) has a horizontal backing plate (11) that is used for hiding intake antrum (15f), flow chamber (15g), water chamber (15h), have on the horizontal backing plate (11) can with the corresponding inlet opening, inlet opening (10c) (11c) on the lower plate (10), have the through hole (11b) that can supply gear (13) to pass on the horizontal backing plate (11).