High-precision multi-stream water meter

Abstract

The utility model discloses a high-precision multi-stream water meter, which belongs to the technical field of water meters and comprises a meter shell. Through the structural design, the liquid storage cavity is used for collecting low-flow water flow, then buoyancy of water is used for driving the floating rod to rise to open the baffle, and therefore the water flow in the liquid storage cavity is sprayed out of the water outlet to directly impact the impeller, the problem that the impeller cannot operate at the low flow is solved, and the precision of the water meter is improved.

Description

Technical Field

[0001] This utility model relates to the field of water meter technology, and in particular to a high-precision multi-jet water meter. Background Technology

[0002] A water meter is an instrument used to measure water flow. A multi-jet water meter typically consists of a casing, a metering mechanism, and sealing gaskets. When water with a certain pressure flows through the water meter, it can drive the metering mechanism inside the water meter to rotate, thereby realizing the function of recording water flow.

[0003] However, if the flow rate is too low, the metering element of the water meter will be unable to overcome mechanical resistance to start operating, thus creating a metering blind zone. Therefore, by precisely controlling the valve opening, the water flow is kept below the starting flow rate for a long period of time, thus implementing "technical water theft." Users who steal water by dripping can steal an average of 0.8-1.2 cubic meters of water per day, equivalent to 30%-50% of the average household's monthly water consumption. As a result, the outflowing tap water is not measured, which will cause economic losses to the water supply company. Therefore, we propose a high-precision multi-flow water meter. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art by designing a high-precision multi-jet water meter.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a high-precision multi-jet water meter, wherein an inlet pipe is fixedly installed on one side of the meter casing, and an outlet pipe is fixedly installed on the other side. A rotating shaft is fixedly installed inside the inlet pipe in a direction perpendicular to the horizontal direction of the water flow. A flap is movably installed on the rotating shaft. A liquid storage chamber is fixedly installed at the bottom end of the inlet pipe. The liquid storage chamber is located outside the meter casing. An inlet communicating with the inlet pipe is opened at the top of the liquid storage chamber. An outlet is opened at the bottom end of the liquid storage chamber near the meter casing. The inlet is located between the flap and the meter casing. A cylindrical groove is opened above the outlet. A float is movably installed in the cylindrical groove. A baffle that cooperates with the outlet is fixedly installed at the bottom end of the float.

[0006] Preferably, the flap is installed on the water inlet side of the liquid storage chamber in the direction of water flow, and the flap is close to the liquid storage chamber.

[0007] Preferably, the rotating shaft is fixedly installed in the upper part of the water inlet pipe, and the flap is eccentrically installed on the rotating shaft.

[0008] Preferably, an air bladder is provided on one side of the float, and the air bladder can be inflated to control the buoyancy.

[0009] Preferably, the inlet pipe is equipped with a filter screen, which is installed on the inlet side in the direction of water flow from the flap.

[0010] Beneficial effects:

[0011] This utility model provides a high-precision multi-jet water meter with the following beneficial effects: Through its structural design, this device uses a liquid storage chamber to collect water flow at low flow rates, and then uses the buoyancy of the water to drive the float to rise and open the baffle, so that the water flow in the liquid storage chamber is sprayed out from the outlet to directly impact the impeller, thereby solving the problem that the impeller cannot operate at low flow rates and improving the accuracy of the water meter. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the high-precision multi-jet water meter described in this utility model;

[0013] Figure 2 This is a structural schematic diagram of the cross-section of the high-precision multi-jet water meter described in this utility model.

[0014] In the diagram, 1 is the casing; 2 is the metering device; 3 is the inlet pipe; 4 is the filter screen; 5 is the flap; 6 is the rotating shaft; 7 is the inlet; 8 is the storage chamber; 9 is the air bladder; 10 is the float; 11 is the baffle; 12 is the impeller; 13 is the outlet pipe; and 14 is the outlet. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be noted that the terms "upper / lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "set / set up," "sleeve," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Please see Figure 1-2 This utility model provides a technical solution: a high-precision multi-jet water meter, including a meter housing 1. A water inlet pipe 3 is fixedly installed on one side of the meter housing 1, and a water outlet pipe 13 is fixedly installed on the other side. A rotating shaft 6 is fixedly installed inside the water inlet pipe 3 in a direction perpendicular to the horizontal direction of the water flow. A flap 5 is movably installed on the rotating shaft 6. A liquid storage chamber 8 is fixedly installed at the bottom end of the water inlet pipe 3. The liquid storage chamber 8 is located outside the meter housing 1. A water inlet 7 communicating with the water inlet pipe 3 is opened at the top of the liquid storage chamber 8. A water outlet 14 is opened at the bottom end of the liquid storage chamber 8 near the meter housing 1. The water inlet 7 is located between the flap 5 and the meter housing 1. A cylindrical groove is opened above the water outlet 14. A float 10 is movably installed in the cylindrical groove. A baffle 11 cooperating with the water outlet 14 is fixedly installed at the bottom end of the float 10. The flapper 5 is installed on the water inlet side of the liquid storage chamber 8 in the direction of water flow. The flapper 5 is close to the liquid storage chamber 8, which facilitates the accumulation of a certain amount of low-flow water before pushing open the flapper 5 to allow a relatively large amount of water to enter the liquid storage chamber 8 through the water inlet 7 at once. The rotating shaft 6 is fixedly installed in the upper part of the water inlet pipe 3. The flapper 5 is eccentrically installed on the rotating shaft 6. The eccentric installation helps to accumulate more water flow while preventing the flapper 5 from flipping over under other disturbances, thus improving stability. An air bladder 9 is provided on one side of the float 10. The air bladder 9 can control the inflation amount to control the buoyancy. A filter screen 4 is provided in the water inlet pipe 3 and is installed on the water inlet side of the flapper 5 in the direction of water flow.

[0019] In this implementation plan:

[0020] When the water meter operates at a high water flow rate, a large amount of water flows through the filter screen 4, breaking through the flapper 5. A large portion of the water then directly enters the meter casing 1 and impacts the impeller 12, thus enabling the metering device 2 to perform normal measurement. When the water meter operates at both high and low water flow rates, a small flow of water passes through the filter screen 4 and is blocked by the flapper 5. When the water flow accumulates to a certain amount, the pressure pushes open the flapper 5, allowing a relatively large amount of water to rush into the storage chamber 8 at once. After a relatively large amount of water rushes into the storage chamber 8, the buoyancy of the water lifts the airbag 9, which in turn causes the float 10 to rise significantly, causing the baffle 11 to rise and open the outlet 14. The water flows out from the outlet 14 and directly impacts the impeller 12, thereby causing the impeller 12 to rotate.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision multi-jet water meter, comprising a casing (1), characterized in that, A water inlet pipe (3) is fixedly installed on one side of the watch case (1), and a water outlet pipe (13) is fixedly installed on the other side. A rotating shaft (6) is fixedly installed in the water inlet pipe (3) in a direction perpendicular to the horizontal direction of the water flow. A flap (5) is movably installed on the rotating shaft (6). A liquid storage chamber (8) is fixedly installed at the bottom end of the water inlet pipe (3). The liquid storage chamber (8) is located outside the watch case (1). A water inlet (7) communicating with the water inlet pipe (3) is opened at the top of the liquid storage chamber (8). A water outlet (14) is opened at the bottom end of the liquid storage chamber (8) near the watch case (1). The water inlet (7) is located between the flap (5) and the watch case (1). A cylindrical groove is opened above the water outlet (14). A float (10) is movably installed in the cylindrical groove. A baffle (11) that cooperates with the water outlet (14) is fixedly installed at the bottom end of the float (10).

2. The high-precision multi-jet water meter according to claim 1, characterized in that, The flap (5) is installed on the water inlet side of the liquid storage chamber (8) in the direction of water flow, and the flap (5) is close to the liquid storage chamber (8).

3. The high-precision multi-jet water meter according to claim 1, characterized in that, The rotating shaft (6) is fixedly installed in the upper part of the water inlet pipe (3), and the flap (5) is eccentrically installed on the rotating shaft (6).

4. The high-precision multi-jet water meter according to claim 1, characterized in that, The float (10) is provided with an air bladder (9) on one side, and the air bladder (9) can control the amount of air to control the buoyancy.

5. The high-precision multi-jet water meter according to claim 1, characterized in that, The inlet pipe (3) is equipped with a filter screen (4), which is installed on the inlet side of the flap (5) in the direction of water flow.

Images