Bubble discharging type water meter

Abstract

A bubble discharging type water meter comprises a meter shell, a water meter cover and a water meter movement. The watchcase is provided with a containing cavity with a top opening. The water meter cover is arranged at the opening of the cavity; the water meter movement is arranged in the accommodating cavity; the water meter movement comprises a gear box and a dial plate; the gear box is provided with a mounting cavity for mounting the gear set; the dial plate is arranged at the top of the gear box, and the dial plate and the water meter cover define a cavity; the dial plate is provided with a first through hole communicated with the installation cavity and the cavity, the dial plate extends downwards to form a flow guide pipe communicated with the cavity, and the lower end of the flow guide pipe is located outside the gear box. Compared with the prior art, bubbles in the water meter can be discharged, and secondary pollution to water flowing through the water meter is avoided.

Description

Technical Field

[0001] The invention relates to the field of water meters, and in particular to a bubble-discharging water meter. Background Art

[0002] A water meter is an instrument for measuring water flow, and its function is to measure the accumulated flow of water. During the production process, in order to ensure the metering performance of the water meter and to prevent the problem of fogging on the lower surface of the meter glass due to the influence of alternating hot and cold air in the water meter during later use, the water meter needs to be filled with water when the water meter is assembled; finally, with the help of atmospheric pressure and the surface tension of water, the pre-filled water in the water meter will not flow out from the possible leakage gap until the water meter is installed and the water is turned on. The water filling operation requires first clamping the case on a dedicated pipeline and passing tap water until it overflows from the top of the case, and then installing the movement and gasket into the case in the specified direction, allowing the tap water to remove air from various places in the water meter during the flow process until the tap water overflows from the top of the gasket. When no bubbles are observed, finally cover the glass and lock it with a cover to complete the assembly.

[0003] Although in theory the filled water will not be lost, in reality, the problem of evaporation due to long storage time of the water meter or strong vibration during transportation, which causes the loss of some water and the re-generation of bubbles, often occurs. This traditional operation not only requires the establishment of special equipment and special production processes, but also requires high skills and sense of responsibility of the operator. At the same time, since water always overflows from the top of the water meter during the operation, the working environment becomes harsh, especially in winter. In addition, the overflowing and lost tap water will also cause a waste of resources. The more prominent problem is that the traditional water meter will inevitably cause pollution during long-term use because the water in the water meter cannot flow, thereby causing secondary pollution to the drinking water flowing through the water meter, seriously affecting the hygiene and safety of drinking water.

[0004] Therefore, it is necessary to improve the existing water meter movement structure. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a bubble-discharging water meter that does not generate secondary pollution in view of the above-mentioned technical status quo.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: a bubble-discharging water meter, comprising:

[0007] A case having a cavity with an open top;

[0008] A water meter cover is arranged at the opening of the cavity;

[0009] The water meter movement is arranged in the cavity, and is characterized in that: the water meter movement comprises:

[0010] A gear box having a mounting cavity for mounting the gear set;

[0011] The dial is provided on the top of the gear box. The dial, the water meter cover and the case enclose to form a cavity.

[0012] The dial is provided with a first through hole that communicates with both the installation cavity and the cavity. The dial extends downward to form a diversion pipe that communicates with the cavity. The lower end of the diversion pipe is located outside the gear box.

[0013] To facilitate the operation of the water meter, preferably, the water meter movement further includes:

[0014] An impeller assembly is provided in the cavity and at the bottom of the gear box.

[0015] The impeller assembly includes:

[0016] An impeller box is located at the bottom of the gear box. The impeller box has a plurality of water outlet ports and a plurality of water inlet ports. The lower end of the diversion pipe is located in the water outlet port of the impeller box.

[0017] An impeller is rotatably arranged in the impeller box. The lower end of the diversion pipe is located in the water outlet port of the impeller box. Therefore, the water flowing out of the diversion pipe can flow out of the water meter together with the water flow out of the water meter. And, since there is an outlet water flow at the lower end of the diversion pipe, under the action of the pressure difference, it is convenient for the water in the cavity to flow into the diversion pipe.

[0018] To filter the incoming water flow and prevent impurities from blocking the water inlet or affecting the impeller, preferably, the water meter movement further includes:

[0019] A filter screen is arranged on the outer periphery of the water inlet port and is used to filter the water flow entering the water inlet port.

[0020] Preferably, the water outlet ports and the water inlet ports are tangentially arranged on the outer peripheral wall of the impeller box. The water flows obliquely into the impeller from the water inlet port, which is convenient for driving the impeller to rotate. The tangential arrangement of the water outlet ports is convenient for the water flow rotating and flowing in the impeller box to flow out.

[0021] To facilitate the exhaust of air bubbles, preferably, the peripheral wall of the case is provided with a water inlet port and a water outlet port. The lower end of the diversion pipe is arranged close to the water outlet port. Correspondingly, the first through hole is close to the water inlet port. The diversion pipe is close to the water outlet port, and the water pressure at the water outlet port is relatively low, which is convenient for the air bubbles in the cavity and the water flow flowing out of the diversion pipe, making it easier for the air bubbles to be carried out.

[0022] Preferably, a sealing ring for sealing is provided between the water meter cover and the case.

[0023] To facilitate assembly and reduce the volume of the water meter, preferably, the bottom of the gear box has a second through hole for the diversion pipe to pass through, and the diversion pipe is penetratively arranged on the gear box.

[0024] Preferably, the diversion pipe is provided on the outer wall of the gear box.

[0025] Compared with the prior art, the advantages of the present invention are as follows: during the operation of the water meter, due to the gaps between the various components of the water meter, part of the water flow will flow into the installation cavity of the gear box through the gaps. The dial is provided with a first through hole that communicates with both the installation cavity and the cavity, and the dial extends downward to form a diversion pipe that communicates with the cavity. Therefore, the water flow in the installation cavity will flow into the cavity through the first through hole, and then flow out through the diversion pipe. Moreover, the bubbles generated in the installation cavity and the cavity due to factors such as insufficient sealing, water evaporation, and water meter vibration can flow out of the cavity together with the water flow through the diversion pipe, and then flow out of the water meter, thereby discharging the bubbles in the cavity and the installation cavity; in addition, since the water in the cavity and the installation cavity can flow, it is not easy to generate pollution in the cavity and the installation cavity, keeping the water flow passing through the water meter safe and hygienic. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the embodiment;

[0027] Figure 2 is an exploded schematic diagram of the embodiment;

[0028] Figure 3 is a schematic diagram of the water meter movement of the embodiment;

[0029] Figure 4 is an exploded schematic diagram of the water meter movement of the embodiment;

[0030] Figure 5 is a cross-sectional view of the embodiment. Detailed Description of the Embodiment

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] As Figures 1-5 shown, it is a preferred embodiment of the present invention.

[0033] As Figures 1-2 shown, the bubble-exhausting water meter includes a meter housing 100, a water meter cover 200, a water meter movement 300, a water inlet port 400, a water outlet port 500, and a sealing ring 600.

[0034] The meter housing 100 has a cavity 100a with an open top; the water meter cover 200 is provided at the opening of the cavity 100a; the water meter movement 300 is provided in the cavity 100a. The circumferential wall of the meter housing 100 is provided with a water inlet port 400 and a water outlet port 500. A sealing ring 600 for sealing is provided between the water meter cover 200 and the meter housing 100. The middle part of the water meter cover 200 is a transparent glass piece 201, enabling the user to see the water meter movement 300 at the bottom of the water meter cover 200.

[0035] As Figures 3-4As shown, the water meter movement 300 includes a gear box 1, a dial 2, an impeller assembly 3, and a filter screen 4.

[0036] The gear box 1 has an installation cavity 1a for installing a gear set; the dial 2 is arranged on the top of the gear box 1, and the dial 2 and the glass part 201 of the water meter cover 200 enclose a cavity 2a; the dial 2 is provided with a first through hole 21 that communicates with both the installation cavity 1a and the cavity 2a. The dial 2 extends downward to form a diversion pipe 22 that communicates with the cavity 2a. The lower end of the diversion pipe 22 is located outside the gear box 1, and the lower end of the diversion pipe 22 is an inclined opening, and the inclined opening faces the water outlet port 500. The lower end of the diversion pipe 22 is close to the water outlet port 500 and is located at the lowest water pressure part of the water meter movement 300. Correspondingly, the first through hole 21 is close to the water inlet port 400. The included angle formed by the center of the upper surface of the first through hole 21 and the center of the upper surface of the diversion pipe 22 with the center of the upper surface of the dial 2 as the vertex is 180° ± 15°. The bottom of the gear box 1 has a second through hole 11 for the diversion pipe 22 to pass through, so that the diversion pipe 22 penetrates through the gear box 1; in other embodiments, the diversion pipe 22 can also be arranged on the outer wall of the gear box 1. In addition, the gear box 1 is provided with an upper clamping plate, a lower clamping plate, and a supporting plate (not shown in the figure) for fixing gears and a wheel window. The gear set, the wheel window, the upper clamping plate, the lower clamping plate, and the supporting plate are all prior arts and will not be elaborated in the present invention.

[0037] The impeller assembly 3 is arranged in the cavity 100a and is located at the bottom of the gear box 1. The impeller assembly 3 has a plurality of water outlet ports 31 and a plurality of water inlet ports 32, and the lower end of the diversion pipe 22 is located in the water outlet port 31 of the impeller assembly 3.

[0038] The impeller assembly 3 includes an impeller box 33 and an impeller 34 rotatably arranged in the impeller box 33. The impeller box 33 is located at the bottom of the gear box 1; the impeller box 33 has a plurality of water outlet ports 31 and a plurality of water inlet ports 32, and the water outlet ports 31 and the water inlet ports 32 are tangentially arranged on the outer peripheral wall of the impeller box 33, and the lower end of the diversion pipe 22 is located in the water outlet port 31 of the impeller box 33. Among them, the impeller box 33 is in a hollow shape, one end of which is open, and the gear box 1 is arranged above the opening. An impeller shaft 341 is arranged on the impeller 34, and the impeller shaft 341 extends upward into the gear box 1.

[0039] The filter screen 4 is arranged on the outer periphery of the water inlet port 32 and is used for filtering the water flow entering the water inlet port 32.

[0040] The working process of the present invention is as follows:

[0041] As Figure 5As shown, water flows into the water meter from the water inlet port 400, then passes through the filter screen 4, enters the impeller box 33 from the water inlet 32, and after passing through the impeller 34, exits the impeller box 33 from the water outlet 31, and finally leaves the water meter from the water outlet port 500. The water flow drives the impeller 34 to rotate, and the rotation of the impeller 34 drives the gear set in the gear box 1 to operate through the impeller shaft 341, thereby driving the change of the numbers on the dial 2 to achieve the counting of the water meter.

[0042] However, due to the gaps existing when the various components in the water meter are assembled, part of the water flow will enter the gear box 1 from the gaps, then enter the cavity 2a through the first through hole 21, and then flow out of the cavity 2a from the diversion pipe 22 and leave the water meter from the water outlet port 500. Moreover, the air bubbles in the installation cavity 1a and the cavity 2a will be taken out of the water meter along with the water flow. Among them, the area of the gap is larger than the cross-sectional area of the first through hole 21, and the cross-sectional area of the first through hole 21 is larger than the cross-sectional area of the diversion pipe 22.

Claims

1. An exhaust bubble type water meter, comprising: A meter housing (100) having a cavity (100a) with an opening at the top; A water meter cover (200) provided at the opening of the cavity (100a); A water meter movement (300) provided in the cavity (100a), characterized in that: the water meter movement (300) includes: A gear box (1) having an installation cavity (1a) for installing a gear set; A dial (2) provided on the top of the gear box (1), and a cavity (2a) is formed between the upper end of the dial (2) and the lower end of the water meter cover (200); The dial (2) is provided with a first through hole (21) communicating with both the installation cavity (1a) and the cavity (2a), and the dial (2) extends downward to form a diversion pipe (22) communicating with the cavity (2a), and the lower end of the diversion pipe (22) is located outside the gear box (1).

2. The bubble discharge type water meter according to claim 1, characterized in that: The water meter movement (300) further includes: An impeller assembly (3) provided in the cavity (100a) and located at the bottom of the gear box (1); The impeller assembly (3) includes An impeller box (33) located at the bottom of the gear box (1); the impeller box (33) has a plurality of water outlets (31) and a plurality of water inlets (32), and the lower end of the diversion pipe (22) is located in the water outlet (31) of the impeller box (33); An impeller (34) rotatably provided in the impeller box (33).

3. The bubble-discharging water meter according to claim 2, wherein: The water meter movement (300) further includes: A filter screen (4) provided on the outer periphery of the water inlet (32) and used for filtering the water flow entering the water inlet (32).

4. The bubble-exhausting water meter according to claim 2, wherein: The water outlets (31) and the water inlets (32) are tangentially provided on the outer peripheral wall of the impeller box (33).

5. The bubble-exhausting water meter according to claim 1, wherein: The peripheral wall of the meter housing (100) is provided with a water inlet port (400) and a water outlet port (500), the lower end of the diversion pipe (22) is close to the water outlet port (500), and correspondingly, the first through hole (21) is close to the water inlet port (400).

6. The bubble-exhausting water meter according to claim 1, wherein: A sealing ring (600) for sealing is provided between the water meter cover (200) and the meter housing (100).

7. The bubble-exhausting water meter according to any one of claims 1-6, characterized in that: The bottom of the gear box (1) has a second through hole (11) for the diversion pipe (22) to pass through, and the diversion pipe (22) is disposed through the gear box (1).

8. The bubble exhausting water meter according to any one of claims 1-6, characterized in that: The diversion pipe is provided on the outer wall of the gear box (1).

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