Anti-freezing pressure-bearing cavity structure for water meter

Abstract

The anti-freezing pressure-bearing cavity structure comprises a water meter shell, a counter box is installed on the upper portion of the water meter shell, a spring and a rubber ring are installed at the bottom end of the counter box, and a pressure-bearing plate is installed at the end, located on the spring and the rubber ring, of the counter box. A cavity is formed between the counter box and the bearing plate, and the spring and the rubber ring are located in the cavity. According to the water meter, under the normal water temperature condition, the spring is not in a greatly compressed state, when the water temperature is reduced, water starts to freeze and the volume is expanded, the pressure bearing plate is extruded, due to the existence of the spring, the pressure bearing plate can be compressed, the expanded water is contained through elastic deformation of the spring, and damage caused by too high internal pressure of the water meter is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to water gauge technical field, concretely is a kind of anti-freezing pressure cavity structure for water gauge. BACKGROUND

[0002] Water gauge is the instrument of measuring water flow, mostly is the cumulative flow measurement of water, generally divided into two kinds of volumetric water gauge and velocity type water gauge.In cold winter, the water in water gauge once freezes, volume expansion, it is easy to cause water gauge shell rupture, internal component damage, cause water gauge to work normally, even cause leakage and other accidents, bring many inconvenience and economic loss to user and water supply department.

[0003] The existing announcement No.CN111457980B discloses an anti-freezing water gauge, which comprises a water gauge body, a shell body is arranged in the middle end of the water gauge body, a connecting sleeve is arranged in the shell body, a partition plate is arranged on the top of the connecting sleeve, and the partition plate is in contact with the anti-freezing pad at both ends.

[0004] The existing water gauge anti-freezing measure has complex structure, is troublesome to assemble, increases manufacturing cost, in order to solve the above technical problems, we propose a kind of water gauge with anti-freezing protection. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an anti-freezing pressure cavity structure for water gauge to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an anti-freezing pressure cavity structure for water gauge, comprising a water gauge shell, a counter box is installed on the upper part of the water gauge shell, a spring and a rubber ring are installed at the bottom end of the counter box, a pressure plate is installed at one end of the spring and the rubber ring, a cavity is formed between the counter box and the pressure plate, and the spring and the rubber ring are located in the cavity.

[0007] Preferably, a filter screen is installed in the water gauge shell, and the filter screen is located between the two interfaces of the water gauge shell.

[0008] Preferably, an impeller box is installed in the water gauge shell, and an impeller is rotatably installed in the impeller box.

[0009] Preferably, a ring-shaped limiting column is arranged on one side of the counter box, and the spring is sleeved on the ring-shaped limiting column.

[0010] Preferably, the rubber ring is uniformly provided with a plurality of through holes.

[0011] Preferably, the rubber ring is located at the inner side or the outer side of the spring.

[0012] Preferably, the spring is a corrugated spring.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. Under normal water temperature, the spring is not in a large compression state, when the water temperature decreases and the water starts to freeze and expand, the pressure bearing plate is extruded, and due to the existence of the spring, the pressure bearing plate can be compressed, so that the elastic deformation of the spring is utilized to accommodate the expanded water, and damage caused by excessive internal pressure of the water gauge is avoided.

[0015] 2. The spring is sleeved on the annular limiting column, the spring is a corrugated spring, the corrugated spring can realize good buffering performance in a small space, the rubber ring is uniformly provided with a plurality of through holes, the through holes are convenient for compression of the rubber ring under stress, the rubber ring is located at the inner side or the outer side of the spring, through the double action of the rubber ring and the spring, the water gauge cavity is ensured to be narrow, and better buffering protection effect can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0017] Fig. 1 It is the structural schematic diagram of the utility model;

[0018] Fig. 2 It is the structural schematic diagram of the spring of the utility model;

[0019] Fig. 3 It is the structural schematic diagram of the rubber ring of the utility model.

[0020] In the drawing: 1, water gauge shell; 2, spring; 3, counter box; 4, filter screen; 5, pressure bearing plate; 6, impeller; 7, impeller box; 8, rubber ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiment is part of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents the selected embodiments of the utility model.

[0022] Please refer to Figs. 1-3 In the utility model embodiment, a kind of anti-freezing pressure cavity structure for water meter, including water meter shell 1, counter box 3 is installed on the upper portion of water meter shell 1, spring 2 and rubber ring 8 are installed at the bottom end of counter box 3, counter box 3 is installed at one end of spring 2 and rubber ring 8 and is equipped with pressure plate 5, cavity is formed between counter box 3 and pressure plate 5, spring 2 and rubber ring 8 are located in cavity, under normal water temperature condition, spring 2 is not in large compression state, when water temperature reduces, water begins to freeze and expands, pressure plate 5 is extruded, due to the existence of spring 2, pressure plate 5 can be compressed, so as to utilize the elastic deformation of spring to accommodate the water of expansion, avoid the damage caused by the excessive internal pressure of water meter;Ring-shaped limiting column is provided on one side of counter box 3 located pressure plate 5, spring 2 is sleeved on ring-shaped limiting column, spring 2 adopts corrugated spring, corrugated spring can realize in smaller space, with good buffering performance, multiple through holes are uniformly formed in rubber ring 8, the setting of through hole facilitates the compression of rubber ring under stress, rubber ring 8 is located at the inside or outside of spring 2, through the double action of rubber ring 8 and spring 2, guarantee the narrow space of water meter cavity, can play better buffering protection effect.

[0023] Filtering screen 4 is installed in water meter shell 1, filtering screen 4 is located between the two interfaces of water meter shell 1, impeller box 7 is installed in water meter shell 1, and impeller 6 is rotatably installed in impeller box 7.

[0024] The working principle of the utility model is as follows: under normal water temperature condition, spring 2 is not in large compression state, when water temperature reduces, water begins to freeze and expands, pressure plate 5 is extruded, due to the existence of spring 2, pressure plate 5 can be compressed, so as to utilize the elastic deformation of spring to accommodate the water of expansion, avoid the damage caused by the excessive internal pressure of water meter.

[0025] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A freeze-proof pressure cavity structure for a water meter, comprising a water meter housing (1), characterized in that: The upper portion of the water meter shell (1) is provided with a counter box (3), the bottom end of the counter box (3) is provided with a spring (2) and a rubber ring (8), the counter box (3) is provided with a pressure bearing plate (5) at one end of the spring (2) and the rubber ring (8), a cavity is formed between the counter box (3) and the pressure bearing plate (5), and the spring (2) and the rubber ring (8) are located in the cavity.

2. A freeze-proof pressure cavity structure for a water meter according to claim 1, characterized in that: A filter screen (4) is arranged in the water meter shell (1), and the filter screen (4) is located between two interfaces of the water meter shell (1).

3. The freeze-proof pressure cavity structure for a water meter according to claim 1, wherein: A vane box (7) is arranged in the water meter shell (1), and a vane (6) is rotatably arranged in the vane box (7).

4. The freeze-proof pressure cavity structure for a water meter according to claim 1, wherein: The counter box (3) is provided with an annular limiting column on one side of the pressure bearing plate (5), and the spring (2) is sleeved on the annular limiting column.

5. The freeze-proof pressure cavity structure for a water meter according to claim 1, wherein: The rubber ring (8) is uniformly provided with a plurality of through holes.

6. The freeze-proof pressure cavity structure for a water meter according to claim 1, wherein: The rubber ring (8) is located on the inner side or the outer side of the spring (2).

7. The freeze-proof pressure cavity structure for a water meter according to claim 1, wherein: The spring (2) is a corrugated spring.

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