Water meter with anti-freezing protection function

Abstract

The water meter with the anti-freezing protection function comprises a water meter shell, a counter box is installed on the upper portion of the water meter shell, a rectifying plate is installed at the position, located at the bottom end of the counter box, of the water meter shell, a cavity is formed between the rectifying plate and the water meter shell, and a high-pressure air bag is installed in the cavity. And a through hole communicated with the cavity is formed in the rectifying plate. Under the condition of normal water temperature, the high-pressure air bag has no influence on normal metering of the water meter; when the water temperature is reduced and the water starts to freeze and expand, the water flows into the elastic air bag through the connecting pipe, the expanded water is contained through elastic deformation of the air bag, and damage caused by too high internal pressure of the water meter is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water meters, and specifically to a water meter with anti-freezing protection. Background Art

[0002] A water meter is an instrument for measuring water flow, mostly for measuring the cumulative water flow. Generally, it is divided into two categories: volumetric water meters and velocity water meters. In cold winters, once the water inside the water meter freezes, its volume expands, which can easily cause the water meter housing to crack and internal components to be damaged, resulting in the water meter being unable to work properly and even causing accidents such as water leakage, bringing a lot of inconvenience and economic losses to users and the water supply department.

[0003] An anti-freezing water meter disclosed in the existing publication number CN111457980B includes a water meter body. A housing is provided in the middle of the water meter body. A connecting sleeve is provided inside the housing. A partition is provided at the top of the connecting sleeve, and both ends of the partition are in contact with anti-freezing pads respectively. By providing a protective pad and a heating tube, when the temperature is low, the heating wire is started to generate heat, and the heat is released to the water meter body, thereby preventing the water meter body from freezing and affecting the lives of residents. An anti-freezing cover is provided to protect the dial and prevent damage to the device caused by the dial cracking, effectively preventing the water inside the water meter body from freezing or the dial from being damaged.

[0004] Existing water meter anti-freezing measures have problems such as complex structure, high cost, and unsatisfactory anti-freezing effect. To solve the above technical problems, we propose a water meter with anti-freezing protection. Summary of the Invention

[0005] The purpose of the present invention is to provide a water meter with anti-freezing protection to solve the problems in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A water meter with anti-freezing protection includes a water meter housing. A counter box is installed on the upper part of the water meter housing. A rectifying plate is installed at the bottom end of the counter box of the water meter housing. A cavity is formed between the rectifying plate and the water meter housing. A high-pressure airbag is installed at the cavity. The rectifying plate is provided with through holes communicating with the cavity.

[0007] Preferably, the rectifying plate includes a rectifying plate body, and a plurality of through holes are equidistantly arranged on the rectifying plate body.

[0008] Preferably, a plurality of reinforcing ribs are uniformly distributed on the rectifying plate body, and the reinforcing ribs and the through holes are arranged at intervals.

[0009] Preferably, a filter screen is installed inside the water meter housing, and the filter screen is located between two interfaces of the water meter housing.

[0010] Preferably, an impeller box is installed inside the water meter housing, and an impeller is rotatably installed inside the impeller box.

[0011] Preferably, a counter is installed inside the counter box.

[0012] Preferably, the high-pressure airbag adopts an annular airbag.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: Under normal water temperature conditions, the high-pressure airbag has no impact on the normal measurement of the water meter. When the water temperature drops and the water begins to freeze and expand in volume, the water will flow into the elastic airbag through the connecting pipe, and the elastic deformation of the airbag is used to accommodate the expanded water, avoiding damage caused by excessive internal pressure of the water meter. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the rectifying plate of the present invention.

[0015] In the figure: 1, water meter housing; 2, counter; 3, counter box; 4, high-pressure airbag; 5, rectifying plate; 6, impeller; 7, impeller box; 8, filter net; 51, rectifying plate main body; 52, reinforcing rib; 53, through hole. Detailed Embodiments

[0016] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0017] Please refer to Figure 1-2, in the embodiment of the present invention, a water meter with anti-freezing protection includes a water meter housing 1. A counter box 3 is installed on the upper part of the water meter housing 1, and a counter 2 is installed inside the counter box 3. A rectifying plate 5 is installed at the bottom end of the water meter housing 1 where the counter box 3 is located. A cavity is formed between the rectifying plate 5 and the water meter housing 1, and a high-pressure airbag 4 is installed at the cavity. The high-pressure airbag 4 adopts an annular airbag, and the inside of the airbag is pressurized to ensure that the airbag does not deform under normal water pressure. After the water meter is installed and filled with water, there is enough deformation space to absorb the volume expansion caused by the freezing of water, effectively protecting the internal components of the water meter from being damaged by ice extrusion; The rectifying plate 5 is provided with through holes 53 communicating with the cavity. The rectifying plate 5 includes a rectifying plate main body 51. The rectifying plate main body 51 is provided with a plurality of through holes 53 at equal intervals. The rectifying plate main body 51 is evenly distributed with a plurality of reinforcing ribs 52. The reinforcing ribs 52 are used to improve the strength and pressure-bearing capacity of the rectifying plate main body 51. The reinforcing ribs 52 and the through holes 53 are arranged at intervals. The through holes 53 facilitate the water in the water meter housing to pass through the rectifying plate and extrude the high-pressure airbag during the freezing process of the water, absorbing the volume expansion caused by freezing.

[0018] As Figure 1 , a filter screen 8 is installed inside the water meter housing 1. The filter screen 8 is located between the two interfaces of the water meter housing 1. An impeller box 7 is installed inside the water meter housing 1, and an impeller 6 is rotatably installed inside the impeller box 7.

[0019] The working principle of the present invention is: under normal water temperature conditions, the high-pressure airbag 4 has no influence on the normal measurement of the water meter. When the water temperature drops and the water begins to freeze and expand in volume, the water will flow into the elastic airbag through the connecting pipe, and the elastic deformation of the airbag is used to accommodate the expanded water, avoiding damage caused by excessive internal pressure of the water meter.

[0020] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A water meter with antifreeze protection, comprising a water meter housing (1), characterized in that: A counter box (3) is installed on the upper part of the water meter housing (1); a rectifier plate (5) is installed on the water meter housing (1) at the bottom end of the counter box (3); a cavity is formed between the rectifier plate (5) and the water meter housing (1); a high-pressure air bag (4) is installed in the cavity; and a through hole (53) communicating with the cavity is formed on the rectifier plate (5).

2. A water meter with antifreeze protection according to claim 1, characterized in that: The rectifying plate (5) comprises a rectifying plate body (51), and the rectifying plate body (51) is provided with a plurality of through holes (53) at equal intervals.

3. A water meter with antifreeze protection according to claim 2, characterized in that: The rectifying plate body (51) is evenly distributed with a plurality of reinforcing ribs (52), and the reinforcing ribs (52) and the through holes (53) are arranged at intervals.

4. A water meter with antifreeze protection according to claim 1, characterized in that: A filter screen (8) is installed in the water meter housing (1), and the filter screen (8) is located between two interfaces of the water meter housing (1).

5. A water meter with antifreeze protection according to claim 1, characterized in that: An impeller box (7) is installed in the water meter housing (1), and an impeller (6) is rotatably installed in the impeller box (7).

6. A water meter with antifreeze protection according to claim 1, characterized in that: A counter (2) is installed in the counter box (3).

7. A water meter with antifreeze protection according to claim 1, characterized in that: The high-pressure airbag (4) is a ring-shaped airbag.

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