CN212482567U - Non-return, anti-theft and anti-drip counting water meter - Google Patents

Abstract

The utility model discloses a non-return, anti-theft and anti-drip counting water meter, which comprises a shell, a sleeve, an impeller, a counter, a rotating wheel cabin, a gear set and a non-return device; the shell is provided with a water inlet and a water outlet, and is divided into a lower ring chamber and an upper ring chamber, the lower ring chamber is communicated with the water inlet, and the upper ring chamber is communicated with the water outlet; the side surface of the sleeve is provided with an upper row of holes and a lower row of holes, the sleeve is arranged in the shell, the lower row of holes of the sleeve is positioned in the lower annular chamber, and the upper row of holes is positioned in the upper annular chamber; the method is characterized in that: the rotating wheel cabin is meshed with teeth on a middle shaft of the impeller through a gear set, and the gear set enables the rotating direction of the impeller driven by the wheel cabin to be consistent with the rotating direction of the impeller driven by water flow; the rotating wheel cabin is provided with a water inlet and a water outlet, and the water outlet passes through the non-return device through a pipeline to be communicated with the water outlet of the shell; this water gauge passes through structural innovative design, can solve the water clock problem completely, accomplishes the water clock and does not leak, carries out accurate measurement to the water clock action, thoroughly solves industry ailment.

Description

Non-return, anti-theft and anti-drip counting water meter

Technical Field

The utility model relates to a water gauge measurement field, concretely relates to non return, theftproof, antidrip count water gauge.

Background

Water meters are meters for measuring water flow, and are mostly integrated water flow measurement, and classified into dry and wet water meters, and liquid seal water meters according to the state of water immersion. The principle of measuring water quantity is consistent regardless of the water meter, and the water meter is realized by the principle that the impeller is driven to rotate by water flow in the pipe and then the counter is driven to count by the rotation of the impeller.

For example, the internal structure of a traditional water meter (basic water meter) can be divided into a shell, a sleeve and an inner core from outside to inside. The housing is cast pig iron and water passes through the lower annular space of the housing after exiting the water inlet, herein called the "lower annulus". An upper ring chamber is arranged above the annular space and is communicated with a water outlet. The bottom of the sleeve is provided with a filter screen with small holes to filter out sundries in water. The side surface of the sleeve is provided with an upper row of round holes and a lower row of round holes, the positions of the holes are just opposite to the upper ring chamber and the lower ring chamber of the shell, obviously, the lower row is provided with a water inlet hole, and the upper row is provided with a water outlet hole. It is particularly noted that the rows of holes are inclined in the tangential direction of the circle. Note that the upper and lower rows of holes are in opposite directions. The water entering tangentially from the lower discharge hole tends to form a rotating stream of water, which is important to the operation of the meter. The inner core is divided into an upper layer, a middle layer and a lower layer, the upper layer is seen from the glass window, and only the pointer and the dial are arranged. The most critical is the lower layer, here a plastic wheel with many plastic blades on the edge, called impeller.

The impeller is positioned right in the rotating flow formed by the lower-layer hole of the sleeve, and the water flow impacts the blades on the periphery of the impeller to generate torque so that the impeller rotates. The larger the faucet is opened, the more rapid the flow, and the faster the impeller will turn.

The shaft of the impeller vertically upwards reaches the middle layer, and a small gear is arranged on the shaft and meshed with a decimal number gear, so that the purpose of accumulating the revolution is achieved. The function of the decimal gear is that every time the unit number gear rotates ten times, the tens gear rotates one time. In other words, the ones gear makes one revolution and the tens gear makes one tenth revolution. The ones gear is the master, by which the tens gear is driven. In practice, each decimal stage is performed with two pairs of gears to make the direction of rotation identical, one pair being 9:30 and the other 10:30, the two pairs being connected in series, the total ratio being the product of the two, i.e. 0.099999, can be quite approximately 0.1. Calculated in this way, if seven digits are to be read (four digits read before the decimal point are black and three digits read after the decimal point are red), 12 pairs of gears are used. In addition to other applications, the small space in the middle layer is required to be squeezed into 18 shafts and 34 gears, and the high-density installation is also possible. The water meter can be used for a long time in a humid environment without maintenance, and has the advantages of no need of power supply and no influence on work due to power failure by virtue of simplicity and low price.

Certainly, with the continuous development of society, water meters of various types are developed on the basis of the traditional water meter, such as an intelligent IC card water meter, a wireless remote water meter and the like, and although the types of the water meters are more, the water meters are structurally modified from the traditional water meter, and the flow measurement of water is still realized by adopting the rotation of an impeller.

When the traditional water meter is used, very serious problems exist in the industry:

the first is that the problem of stealing by users is serious, and the users can take water in a dripping way without counting the water meter due to the inherent defect caused by the working principle of the traditional water meter, the reason of dripping is that weak water flow linearly and upwards enters the upper ring chamber from the lower ring chamber, and the water flow cannot push the impeller to rotate because of the weak water flow; therefore, the user can flow the opening degree of the water valve out in a dropping mode, water can be used without being metered, many users can take water in such a mode for a long time, the loss of a water supply company is very serious, especially for the supply of direct drinking water, the price is far higher than that of common water, and the quantity of the waste water generated by the dropping leakage is very huge every year. In addition, in many residents, a large number of old and damaged water valves exist, the old water valves cannot be completely and tightly closed, natural leakage is caused, and the residents cannot replace the old water valves in time due to the fact that other factors such as charging and the like cannot be caused, so that the old water valves are one of the reasons for causing leakage; through market investigation, about 3 kilograms of water can be dripped to a tap every hour and can not be detected by the water gauge, about two tons of water can be dripped in one month, about 20 tons of water can be dripped to a family (according to the dripping accounting of a tap of a family) one year, about 30% of families in a whole city (60 ten thousand households) have the dripping condition accounting (the actual condition is far greater than the data, particularly, the dripping phenomenon is more serious in a three-four-line city and a smaller county city), and about 360 ten thousand tons of water are lost to a water supply company one year. In order to solve the problem, a corresponding anti-leakage water meter is designed at present, negative pressure is formed in the water meter by utilizing leakage, then when the leakage reaches a critical value, a strand of water flow flows into the water meter again to push an impeller to rotate, which is an advanced water meter at present, but in the implementation process, the metering data is extremely inaccurate, for example, about 0.2-0.3L of water per 1L of leakage, and therefore, the actual metering is still not reliable enough for solving the actual problem.

Secondly, because the water meter is unidirectional and is detachable, normal metering is carried out in forward rotation, and metering in reverse rotation is continuously reduced, on the basis of the reason, a plurality of users can detach the water meter, reversely mount the water meter or utilize compressed air flows such as a blower and the like to carry out reverse blowing to reduce the metering data of the water meter, so that the actual water consumption is far greater than the metering data, and the loss of a water supply company caused by water stealing every year is huge and even loss occurs; secondly, the higher resident of floor height sometimes can not supply water, can cause intraductal negative pressure, and the water of high-rise resident can flow back into the water of lower floor user, can also arouse the water gauge to overturn, and can also pollute lower floor user's water (for example the intraductal ponding rivers turn green), for solving this problem, usually will connect a check valve at the water intaking end of water gauge, prevent the backward flow of water, though can avoid the backward flow like this, but increased the connection length of pipeline, installation occupation space is big, especially the water gauge is generally installed the corner below the cupboard, and the space is little.

Disclosure of Invention

The utility model aims at providing a non-return, anti-theft and anti-drip counting water meter, which can completely solve the problem of drip leakage through the innovative design on the structure, achieve the purpose of drip leakage prevention, accurately measure the drip leakage behavior and completely solve the pain in the industry; meanwhile, the water meter can prevent backflow phenomenon and impeller inversion, so that the metering data can not be changed; the problem is solved under the condition of not changing the appearance of the water meter, pain points in the industry are thoroughly solved, and the water meter drop metering device is a great revolution for improving drop metering of the water meter.

A non-return, anti-theft and anti-drip counting water meter comprises a shell, a sleeve, an impeller, a counter, a rotating wheel cabin, a gear set and a non-return device; the shell is provided with a water inlet and a water outlet, and is divided into a lower ring chamber and an upper ring chamber, the lower ring chamber is communicated with the water inlet, and the upper ring chamber is communicated with the water outlet; the side surface of the sleeve is provided with an upper row of holes and a lower row of holes, the sleeve is arranged in the shell, the lower row of holes of the sleeve is positioned in the lower annular chamber, and the upper row of holes is positioned in the upper annular chamber; an impeller is arranged in the sleeve, a middle shaft of the impeller is directly communicated with the middle layer, a gear is arranged at the top of the middle shaft, the gear is meshed with the counter, and the impeller rotates to drive the technical device to rotate for metering;

the rotating wheel cabin is meshed with teeth on a middle shaft of the impeller through a gear set, and the gear set enables the rotating direction of the impeller driven by the wheel cabin to be consistent with the rotating direction of the impeller driven by water flow;

the rotating wheel cabin is provided with a water inlet and a water outlet, and the water outlet passes through the non-return device through a pipeline to be communicated with the water outlet of the shell;

the non-return device is arranged at the water outlet of the shell, so that water flow can only flow out of the water outlet of the shell through the non-return device.

Preferably, the wheel compartment comprises a wheel housing, a wheel; the wheel shell is of a hollow cylinder structure, a rotating wheel is arranged in the wheel shell, a rotating shaft of the rotating wheel penetrates through the wheel shell, and a gear is arranged on the rotating shaft extending out of the wheel shell.

Furthermore, the rotating wheel and the wheel shell are in excessive or interference fit, so that water is prevented from flowing away from a gap between the rotating wheel and the wheel shell.

Furthermore, the periphery of the rotating wheel is provided with a layer of elastic layer such as rubber and silica gel, and the rotating wheel is in extrusion contact with the wheel shell.

Preferably, the non-return means is a means allowing one-way passage of water, such as a one-way valve.

Further, the backstop device comprises a blocking piece and an opening and closing piece; the separation blade is connected with the water outlet of the shell, the separation blade is blocked at the water outlet of the shell, a plurality of water outlet holes and small flow holes are formed in the separation blade, a blocking ball is arranged on the separation blade, the blocking ball can block or open the small flow holes, and the opening-closing sheet is superposed with the separation blade; the superposed opening and closing sheet blocks the water outlet hole of the baffle sheet without blocking the small flow hole, and the baffle sheet and the opening and closing sheet are separated, and the blocking ball blocks the small flow hole; the small flow hole is connected with a water outlet of the runner cabin.

Furthermore, a pull shaft is arranged at the center of the opening and closing sheet, the pull shaft penetrates through the blocking sheet to enable the blocking sheet to be superposed with the opening and closing sheet, and a resistance piece is arranged between the free end of the pull shaft and the blocking sheet to enable the opening and closing sheet and the blocking sheet to be opened in a resistance mode.

Further, the resistance piece comprises elastic resistance of a spring, magnetic attraction resistance and the like.

Preferably, the runner cabin and the non-return device are correspondingly arranged on a dry water meter, a wet water meter, a large-caliber rotor water meter and a spiral water meter.

The beneficial effects of the utility model reside in following:

firstly, the utility model adds a non-return device and a rotating wheel cabin in the original meter, and the two devices are mutually matched to solve the problem of water getting by dropping for users; its transfer wheel cabin is when using water for the user low discharge (open the valve), rivers get into by the inlet water mouth of water gauge, directly enter into the runner cabin by telescopic upper and lower two rows of holes, carry the outflow by the runner under-deck, low discharge (water pressure is not enough with non return means back-up) water gets into behind the runner cabin, rivers can push away the runner and rotate, the runner rotates and drives the impeller rotation, impeller rotation drives the counter work, realize the measurement when low discharge (including the bit) water intaking, because during the low discharge, the play water mode can only be through the runner cabin play water, as long as pass through the runner cabin, so just can realize accurate measurement, each drips and can both measure, the precision that the measuring data is ten minutes. When a user uses water with large flow, the water valve is in a fully open state, the water pressure pushes open and close sheets of the non-return device away, full-open water outlet is achieved, and at the moment, the water outlet mode is the same as that of the non-return device and that of the rotating wheel cabin.

The structure of second, this application all sets up the inboard at the casing for the appearance structure of water gauge does not have the change, and this accords with market demand very much.

Third, backstop sets up the delivery port at the casing in this application, has solved the problem of water clock water intaking with the cooperation in runner cabin, has still solved the user and has installed, reversed the problem that makes the counter measurement reduce simultaneously, that is to say, the water gauge in this application is irreversible, and reverse dress is unable water, because the structure all is the inboard, and is indestructible, even by artificial tampering, also unable water of stealing, and the effect is very outstanding for the theftproof.

Fourthly, the water consumption for dripping and leaking is measured accurately, the water amount for dripping and leaking is almost consistent with the water amount measured by the water meter through the test, the precision exceeds 0.01, and the precision is completely feasible by considering the measurement error; the precision of the test should be compared and tested, which is far higher than that of the test on the market at present.

Fifthly, the application can completely replace the existing structural part for additionally arranging the check valve outside the water meter, so that the installation is more space-saving and more convenient.

Drawings

Fig. 1 is a schematic diagram of the explosion structure of the present invention.

Fig. 2 is a schematic view of the sleeve structure.

Fig. 3 is a schematic view of the installation of the wheel cabin of the present invention.

Fig. 4 is a schematic view of the structure of the wheel chamber of the present invention.

Fig. 5 is a schematic view of the installation position of the backstop device of the present invention.

Fig. 6 is a schematic view of the connection between the backstop device and the wheel chamber.

Fig. 7 is a schematic side view of the backstop device of the present invention.

In the figure, a shell 1, a water outlet 1-1, a sleeve 2, an impeller 3, a counter 4, a rotating wheel cabin 5, a wheel shell 5-1, a rotating wheel 5-2, a water inlet 5-3, a water outlet 5-4, a gear set 6, a non-return device 7, a baffle 7-1, an opening and closing sheet 7-2, a water outlet 7-3, a small flow hole 7-4 and a blocking ball 7-5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-6, a non-return, anti-theft, anti-drip counting water meter includes a housing, a sleeve 2, an impeller 3, a counter 4, a wheel rotating chamber 5, a gear set 6, and a non-return device 7; the shell 1 is provided with a water inlet and a water outlet 1-1, the interior of the shell 1 is divided into a lower ring chamber and an upper ring chamber, the lower ring chamber is communicated with the water inlet, and the upper ring chamber is communicated with the water outlet 1-1; the side surface of the sleeve 2 is provided with an upper row of holes and a lower row of holes, the sleeve 2 is arranged in the shell 1, the lower row of holes of the sleeve 2 is positioned in the lower annular chamber, and the upper row of holes is positioned in the upper annular chamber; an impeller 3 is arranged in the sleeve 2, a middle shaft of the impeller 3 is directly communicated with the middle layer, a gear is arranged at the top of the middle shaft, the gear is meshed with the counter 4, and the impeller 3 drives the technical device to rotate for metering;

the rotating wheel cabin 5 is meshed with teeth on a middle shaft of the impeller 3 through the gear set 6, and the gear set 6 enables the rotating direction of the impeller 3 driven by the wheel cabin to be consistent with the rotating direction of the impeller 3 pushed by water flow; the gear set 6 has both the function of adjusting the transmission ratio and the function of adjusting the transmission direction (the number of gears shown in the figure does not represent a limited number, and is only a display function), and in implementation, after the size of the rotating wheel chamber 5 is set, the transmission ratio of the gears is adjusted according to the actual water yield of the rotating wheel chamber 5, so that the water quantity passing through the rotating wheel chamber 5 is matched with the water meter for metering.

Wherein, the rotating wheel cabin 5 comprises a wheel shell 5-1 and a rotating wheel 5-2; the wheel shell 5-1 is of a hollow cylindrical structure, a rotating wheel 5-2 is arranged in the wheel shell 5-1, a rotating shaft of the rotating wheel 5-2 penetrates through the wheel shell 5-1, a gear is arranged on the rotating shaft extending out of the wheel shell, and the gear is meshed with teeth of the impeller 3 through a gear set 6; the runner cabin 5 is provided with a water inlet 5-3 and a water outlet 5-4, and the water outlet 5-4 is communicated with a water outlet 1-1 of the shell 1 by passing through a check device 7 through a pipeline; in the process, water flow pushes a rotating wheel 5-2 in the rotating wheel cabin 5 to rotate, the rotating wheel 5-2 drives an impeller 3 to rotate, and the impeller 3 drives a counter 4 to work for metering, so that accurate metering of the dripping and leaking behaviors is realized; in order to make the water flow in the wheel chamber 5 easier to drive the wheel 5-2 to rotate, two strengthening ways are usually adopted, firstly, the water inlet 5-3 and the water outlet 5-4 are arranged in a direction tangential to the wheel shell 5-1, and the opposite direction is adopted; the second is to set the rotating wheel 5-2 into a wheel-shaped structure, or to use the two at the same time; in the application, the precision machining precision between the rotating wheel 5-2 and the wheel shell 5-1 is high, so that water flow is prevented from passing through a gap between the rotating wheel and the wheel shell; or the periphery of the rotating wheel 5-2 is provided with a layer of elastic layer such as rubber, silica gel and the like, and the rotating wheel 5-2 is in extrusion contact with the wheel shell 5-1, so that the problem that water flows through gaps can be avoided.

Wherein, the non-return device 7 is arranged at the water outlet 1-1 of the shell 1, so that the water flow in the sleeve 2 can only flow out of the water outlet 1-1 of the shell 1 through the non-return device 7. The effect of realizing the drip-proof function is the effect of the combined action of the non-return device 7 and the rotating wheel cabin 5, the rotating wheel cabin 5 is used for providing guarantee for small-flow water flow, the pressure of the water flow in the water meter is not enough to push the non-return device 7 away when a user uses water at small flow, the water flow can only flow out of the rotating wheel cabin 5, and when the water at large flow is used, the water valve is fully opened, and the water pressure in the water meter is enough to push the non-return device 7 away, so that the water supply at large flow is realized. The non-return device 7 plays a role in blocking, and can be flushed only by having a certain water pressure, when the opening degree of the water valve is large, the water valve can be flushed only by being opened to a large degree, the water flow can push the impeller 3 to rotate, and the counter 4 starts to work. Consequently, this application ingenious realization from the bit to the accurate measurement of full division, through runner cabin 5 and backstop 7's combined action, both solved the water intaking problem of dribbling, also solved the problem of anti-dress, blowback callback counter 4, whole appearance does not have the change moreover, has saved the use amount of structural component, has saved installation space, and the effect is better.

In the present application, the non-return means 7 are means allowing the passage of a water flow in one direction, such as for example a one-way valve.

The structure of the backstop device 7 in the application is as follows: the one-way valve comprises a baffle 7-1 and an opening and closing sheet 7-2; the separation blade 7-1 is connected with the water outlet 1-1 of the shell 1, the separation blade 7-1 blocks the water outlet 1-1 of the shell 1, the separation blade 7-1 is provided with a plurality of water outlet holes 7-3 and small flow holes 7-4, the separation blade 7-1 is provided with a blocking ball 7-5, the blocking ball can block or open the small flow holes 7-4, and the opening and closing sheet 7-2 is superposed with the separation blade 7-1; after the separation blade 7-1 and the opening and closing blade 7-2 are separated, the small flow hole 7-4 is blocked by the blocking ball 7-5; the small flow hole 7-4 is connected with a water outlet 5-4 of the wheel chamber 5.

Wherein, the center of the opening and closing sheet 7-2 is provided with a pulling shaft, the pulling shaft passes through the baffle 7-1 to lead the baffle 7-1 to be superposed with the opening and closing sheet 7-2, and a resistance part (a spring and a magnet) is arranged between the free end of the pulling shaft and the baffle 7-1 to lead the opening and closing sheet 7-2 and the baffle 7-1 to have resistance when being pulled apart, and the opening and closing sheet is in a joint state when not stressed (the force at the position refers to the pressure of water flow in the water meter).

In this application, because the water gauge that uses at present all rotates through rivers drive impeller 3 and realizes the measurement, consequently be that the water gauge of impeller 3 formula can all adopt the technical scheme of this application to realize antidrip, theftproof usefulness, prevent transferring the table, if the runner cabin 5 can install with non-return device 7 and implement on dry-type water gauge, wet-type water gauge, heavy-calibre rotor water gauge, spiral wing water gauge, it all can play the same effect.

Through calculating, the water gauge of this application compares with traditional water gauge (each three groups), lets the 10 hours comparison tests of drippage under the condition with water pressure (0.7 kilograms of water pressure), with drippage rate (1.5 s/drop), same pipe diameter (DN 15), and the test result shows, the water gauge drippage of this application leaks 10 hours, and the ground drippage volume that measures is 27.6, 27.3, 28.1kg respectively, and the water gauge actual measurement is about: 27.8, 27.2, and 27.9L (wherein the H equivalent ratio of water is 1L =1 kg); in consideration of the measurement error, the measurement precision of the method can be judged to be very high. The drop leakage of the traditional water meter is respectively 27.5, 27.5 and 27.1kg, and the actual measurement value of the traditional water meter is almost unchanged, which means that the traditional water meter cannot measure the drop-type water flow. The reason that the test of this application is accurate once can form the dribbling, impeller 3 in the water gauge then just can rotate certainly, and impeller 3 just can rotate, then just can measure away the water yield.

In this application, in order to avoid direct impact of water on the wheel well 5, the water inlet 5-3 of the wheel well 5 is provided with an elbow.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (8)

1. A non-return, anti-theft and anti-drip counting water meter comprises a shell, a sleeve, an impeller, a counter, a rotating wheel cabin, a gear set and a non-return device; the shell is provided with a water inlet and a water outlet, and is divided into a lower ring chamber and an upper ring chamber, the lower ring chamber is communicated with the water inlet, and the upper ring chamber is communicated with the water outlet; the side surface of the sleeve is provided with an upper row of holes and a lower row of holes, the sleeve is arranged in the shell, the lower row of holes of the sleeve is positioned in the lower annular chamber, and the upper row of holes is positioned in the upper annular chamber; an impeller is arranged in the sleeve, a middle shaft of the impeller is directly communicated with the middle layer, a gear is arranged at the top of the middle shaft, the gear is meshed with the counter, and the impeller rotates to drive the technical device to rotate for metering; the method is characterized in that:

the rotating wheel cabin is meshed with teeth on a middle shaft of the impeller through a gear set, and the gear set enables the rotating direction of the impeller driven by the wheel cabin to be consistent with the rotating direction of the impeller driven by water flow;

the rotating wheel cabin is provided with a water inlet and a water outlet, and the water outlet passes through the non-return device through a pipeline to be communicated with the water outlet of the shell;

the non-return device is arranged at the water outlet of the shell, so that water flow can only flow out of the water outlet of the shell through the non-return device.

2. A non-return, anti-theft, drip-proof counting water meter according to claim 1, characterized in that: the rotating wheel cabin comprises a wheel shell and a rotating wheel; the wheel shell is of a hollow cylinder structure, a rotating wheel is arranged in the wheel shell, a rotating shaft of the rotating wheel penetrates through the wheel shell, and a gear is arranged on the rotating shaft extending out of the wheel shell.

3. A non-return, anti-theft, drip-proof counting water meter according to claim 2, characterized in that: the runner is in excessive or interference fit with the wheel shell, so that water is prevented from flowing away from a gap between the runner and the wheel shell.

4. A non-return, anti-theft, drip-proof counting water meter according to claim 3, characterized in that: the periphery of the rotating wheel is provided with a layer of elastic layer such as rubber and silica gel, and the rotating wheel is in extrusion contact with the wheel shell.

5. A non-return, anti-theft, drip-proof counting water meter according to claim 1, characterized in that: the non-return device is a device allowing water flow to pass through in one direction.

6. A non-return, anti-theft, anti-drip count water meter according to claim 5, wherein: the non-return device comprises a blocking piece and an opening and closing piece; the separation blade is connected with the water outlet of the shell, the separation blade is blocked at the water outlet of the shell, a plurality of water outlet holes and small flow holes are formed in the separation blade, a blocking ball is arranged on the separation blade, the blocking ball can block or open the small flow holes, and the opening-closing sheet is superposed with the separation blade; the superposed opening and closing sheet blocks the water outlet hole of the baffle sheet without blocking the small flow hole, and the baffle sheet and the opening and closing sheet are separated, and the blocking ball blocks the small flow hole; the small flow hole is connected with a water outlet of the runner cabin.

7. A non-return, anti-theft, drip-proof counting water meter according to claim 6, characterized in that: the center of the opening and closing piece is provided with a pull shaft, the pull shaft penetrates through the blocking piece to enable the blocking piece to be superposed with the opening and closing piece, and a resistance piece is arranged between the free end of the pull shaft and the blocking piece to enable the opening and closing piece and the blocking piece to be opened with resistance.

8. A non-return, anti-theft, drip-proof counting water meter according to claim 7, characterized in that: the resistance piece comprises elastic resistance of a spring and magnetic resistance.

Images