Water meter measuring tube assembly with built-in steel mesh

Abstract

The utility model belongs to the technical field of water meter equipment, and particularly relates to a water meter measuring pipe assembly with built-in steel meshes, which comprises a water meter pipeline, an outer ring steel mesh, a first inner ring steel mesh and a second inner ring steel mesh, the first inner ring steel mesh is arranged at the front end in the outer ring steel mesh, a filtering structure is arranged in the first inner ring steel mesh, the second inner ring steel mesh is arranged at the rear end in the outer ring steel mesh, multiple layers of filtering chambers are arranged in the second inner ring steel mesh, and a protruding ring table is arranged at the bottom of the outer ring steel mesh. A gap is formed between the outer ring surface of the second inner ring steel mesh and the inner ring surface of the outer ring steel mesh, so that a filter cavity is formed. According to the water meter, gradual interception from large particles to fine impurities can be achieved, rust, silt and the like can be effectively prevented from entering a water meter movement, the water stealing behavior that rotation of the impeller is manually disturbed can be obstructed from the physical level, and the water meter has the advantages of being resistant to damage and enhancing safety.

Description

Technical Field

[0001] This utility model belongs to the field of water meter equipment technology, specifically relating to a water meter measuring tube assembly with an internal steel mesh. Background Technology

[0002] Water meters can be classified into velocity-type and volumetric-type based on their measurement principle. Velocity-type water meters measure flow by rotating an impeller driven by water flow, suitable for small to medium flow rates. They have a simple structure but are affected by water quality. Volumetric-type water meters count flow through a fixed volume chamber, offering higher accuracy and suitable for high-precision applications. Electronic water meters have no mechanical parts, using sound waves to measure flow velocity. They offer excellent accuracy and durability, support remote transmission, and are the mainstream type of smart water meter.

[0003] While the quality of tap water in China has improved significantly in recent years, some pipelines inevitably still contain impurities such as rust, hemp fibers, iron filings, and gravel. These impurities eventually reach the water meter inlet with the water flow. To prevent impurities from entering the water meter mechanism and causing malfunctions, a filter screen is installed at the water meter inlet. The most common type is the bowl-shaped filter screen, placed outside the impeller box; this structure has a large scale-holding capacity. Another type is the cylindrical filter screen, placed on the water inlet side of the meter casing. Its effectiveness is less than the bowl-shaped filter screen. However, both types suffer from a single density, making them unsuitable for impurities of different sizes. Large particles easily clog the mesh, while small particles penetrate directly. Furthermore, they lack sufficient protection against damage; ordinary filter screens can be hooked through by wire, making it easy for people to interfere with the impeller's rotation and "steal" water. Utility Model Content

[0004] The purpose of this invention is to provide a water meter measuring tube assembly with a built-in steel mesh, which can progressively intercept large particles and fine impurities, effectively preventing rust, silt, and other contaminants from entering the water meter mechanism. It can also physically block water theft caused by human interference with the impeller rotation, and has the characteristics of being tamper-proof and enhancing security.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] A water meter measuring tube assembly with an internal steel mesh includes a water meter pipe, an outer ring steel mesh, a first inner ring steel mesh, and a second inner ring steel mesh. The water meter pipe is connected to pipes at both ends for measuring water volume. The outer ring steel mesh is located at the inlet of the water meter pipe. The first inner ring steel mesh is located at the front end inside the outer ring steel mesh and has a filter structure inside. The second inner ring steel mesh is located at the rear end inside the outer ring steel mesh and has multiple filter chambers inside.

[0007] In a preferred embodiment, the bottom of the outer ring steel mesh is provided with a protruding ring platform, and the outer ring surface of the second inner ring steel mesh is spaced apart from the inner ring surface of the outer ring steel mesh to form a filter cavity.

[0008] In a preferred embodiment, the first inner ring steel mesh is a bowl-shaped filter mesh, and a ring protrusion is provided on the side of the first inner ring steel mesh facing the second inner ring steel mesh. A first through hole is provided on the mesh surface of the first inner ring steel mesh.

[0009] In a preferred embodiment, the filter structure is provided with at least two large intersecting support plates, which are spaced apart in the middle to form a large isolation cavity when they interact; the filter structure also includes two small intersecting support plates, which are spaced apart in the middle to form a small isolation cavity when they interact; the common ends of the two large support plates intersect, the common ends of the two small support plates intersect, and the ends of the two large support plates are connected to the ends of the two small support plates.

[0010] In a preferred embodiment, a second through hole is provided on both the large support plate and the small support plate.

[0011] In a preferred embodiment, the second inner ring steel mesh has a corresponding ring protrusion with a ring recess, and the first inner ring steel mesh is installed on the second inner ring steel mesh through the cooperation of the ring protrusion and the ring recess.

[0012] In a preferred embodiment, the second inner ring steel mesh is provided with a first filter chamber, a second filter chamber and a third filter chamber in a direction away from the first inner ring steel mesh. The first filter chamber, the second filter chamber and the third filter chamber are respectively provided with a first filter hole, a second filter hole and a third filter hole, and the pore size of the first filter hole, the second filter hole and the third filter hole gradually decreases.

[0013] In a preferred embodiment, the wall of the first filter chamber is configured as an inwardly inclined slope, and the first filter holes are formed on the inclined slope.

[0014] The technical effects achieved by this utility model are as follows:

[0015] In this application, a multi-stage filtration structure consisting of an outer ring steel mesh and an inner ring double steel mesh is used to achieve gradual interception of large particles and fine impurities, effectively preventing rust, silt, and other contaminants from entering the water meter's movement, ensuring metering accuracy and extending the water meter's service life. Furthermore, the inclined filter chamber and three-dimensional support plate design optimize water flow guidance, flushing impurities into the filter chamber for centralized retention, reducing filter pore blockage.

[0016] In this application, by setting up a filter structure, the staggered three-dimensional filter structure (combination of large and small support plates) is difficult to be penetrated by wires, which physically prevents water theft by human interference with the impeller rotation, and has the characteristics of being resistant to damage and enhancing safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in this practical application;

[0018] Figure 2 This is a schematic diagram of the installation structure of the water meter pipe and the outer ring steel mesh in this practical application.

[0019] Figure 3 This is a schematic diagram of the three-dimensional separation structure of the outer ring steel mesh in this practical application;

[0020] Figure 4 This is a schematic diagram of the first inner ring steel mesh half-section structure in this practical application;

[0021] Figure 5 This is a three-dimensional structural diagram of the filter structure used in this practical application;

[0022] Figure 6 This is a half-section diagram of the filter structure in this practical application.

[0023] Figure 7 This is a schematic diagram of the half-section structure of the second inner ring steel mesh in this practical application;

[0024] Figure 8 This is a half-sectional schematic diagram of the outer ring steel mesh and internal structure in this practical application.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Water meter pipe; 2. Outer ring steel mesh; 201. Ring platform; 202. Filter chamber; 3. First inner ring steel mesh; 301. Ring protrusion; 302. First through hole; 4. Second inner ring steel mesh; 401. Ring concave; 402. Inclined surface; 403. First filter chamber; 404. First filter hole; 405. Second filter chamber; 406. Second filter hole; 407. Third filter chamber; 408. Third filter hole; 5. Filtration structure; 501. Large support plate; 502. Small support plate; 503. Second through hole. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0030] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0031] Please see the appendix Figures 1-8 As shown, this utility model provides a water meter measuring tube assembly with an internal steel mesh, including a water meter pipe 1, an outer ring steel mesh 2, a first inner ring steel mesh 3, and a second inner ring steel mesh 4. The water meter pipe 1 is connected to pipes at both ends for measuring water volume. The outer ring steel mesh 2 is located at the inlet of the water meter pipe 1, and a protruding ring platform 201 is provided at the bottom of the outer ring steel mesh 2. The outer ring surface of the second inner ring steel mesh 4 and the inner ring surface of the outer ring steel mesh 2 are spaced apart to form a filter chamber 202. Specifically, the distance between the second inner ring steel mesh 4 and the outer ring steel mesh 2 can serve as a primary filtration filter chamber 202, leaving impurities around the periphery of the outer ring steel mesh 2 without affecting the main drainage channel. The first inner ring steel mesh 3 is located at the front end inside the outer ring steel mesh 2, and a filter structure 5 is provided inside the first inner ring steel mesh 3. The second inner ring steel mesh 4 is located at the rear end inside the outer ring steel mesh 2, and a multi-layer filter chamber is provided inside the second inner ring steel mesh 4.

[0032] Specifically, the two ends of the water meter pipe 1 are connected to the pipeline. The water flow through the water meter pipe 1 automatically measures the water flow rate. The water flow will first pass through components such as the outer ring steel mesh 2, the first inner ring steel mesh 3, the filter structure 5, and the second inner ring steel mesh 4 to filter impurities such as rust, hemp fibers, iron filings, and sand. The filter structure 5 can effectively prevent impurities from entering the water meter movement and causing water meter malfunction.

[0033] Please see the appendix Figures 3-4 As shown, the first inner ring steel mesh 3 is a bowl-shaped filter screen. A ring protrusion 301 is provided on the side of the first inner ring steel mesh 3 facing the second inner ring steel mesh 4. A first through hole 302 is opened on the mesh surface of the first inner ring steel mesh 3.

[0034] Please see the appendix Figures 5-6 As shown, the filter structure 5 is provided with at least two large intersecting support plates 501. When the two large support plates 501 interact, their middle parts are far apart, forming a large isolation cavity. The filter structure 5 also includes two small intersecting support plates 502. When the two small support plates 502 interact, their middle parts are far apart, forming a small isolation cavity. The common ends of the two large support plates 501 intersect, the common ends of the two small support plates 502 intersect, the ends of the two large support plates 501 are connected to the ends of the two small support plates 502, and a second through hole 503 is provided on the large support plates 501 and the small support plates 502.

[0035] Specifically, the filter structure 5 is made of any one of the following materials: glass fiber, carbon fiber, metal, or polymer fiber. All of these materials have good elasticity, strength, and fatigue resistance, enabling them to recover their original shape after being subjected to force. Furthermore, the three-dimensional support structure of the filter structure 5 gives the filter media superior mechanical strength, making it suitable for high-pressure and high-flow-rate environments, such as the long-term impact of water flow in pipes.

[0036] More specifically, the large isolation cavity formed by the large support plate 501 and the small isolation cavity formed by the small support plate 502 are combined to form a multi-layered, three-dimensional network structure. Through this multi-layered, interwoven structure, particles of different sizes can be physically intercepted, and a second through hole 503 is opened on it to maintain filtration accuracy and reduce fluid resistance, avoiding blockage caused by high density. Through the design of this structure, not only can impurities be filtered, but also water theft can be prevented in some cases by using wires to interfere with the rotation of the water meter, effectively reducing such risks.

[0037] Please see the appendix Figure 7 As shown, the second inner ring steel mesh 4 has a corresponding ring protrusion 301 with a ring recess 401, and the first inner ring steel mesh 3 is installed on the second inner ring steel mesh 4 through the cooperation of the ring protrusion 301 and the ring recess 401.

[0038] Please see the appendix Figures 7-8 As shown, the second inner ring steel mesh 4 is provided with a first filter chamber 403, a second filter chamber 405 and a third filter chamber 407 in a direction away from the first inner ring steel mesh 3. The first filter chamber 403, the second filter chamber 405 and the third filter chamber 407 are respectively provided with a first filter hole 404, a second filter hole 406 and a third filter hole 408, and the pore size of the first filter hole 404, the second filter hole 406 and the third filter hole 408 gradually decreases.

[0039] Specifically, the arrangement of the first filter chamber 403, the second filter chamber 405, and the third filter chamber 407, along with the design of gradually decreasing pore size, achieves a gradient interception effect through the multi-filter chamber structure. Furthermore, in conjunction with the structure of the filter structure 5, it can induce particle collision and adsorption, enhance the interception probability, and further improve the interception and filtration effect.

[0040] Please see the appendix Figures 7-8 As shown, the wall of the first filter chamber 403 is configured as an inwardly inclined slope 402, and the first filter hole 404 is opened on the inclined slope 402.

[0041] Specifically, the wall of the first filter chamber 403 is provided with a clear inclined surface 402, and the first filter hole 404 is opened on the inclined surface 402. The inclined surface 402 and the inclined hole have a certain guiding effect on the water flow, and flush the impurities that may be carried in the water flow into the filter chamber 202. Since the diameter of the third filter hole 408 is smaller than the diameter of the first filter hole 404, the impurities can be retained inside the filter chamber 202 as much as possible.

[0042] The working principle of this utility model is as follows: Water first flows through the outer ring steel mesh 2, where large particles of impurities are intercepted in the filter chamber 202 (the annular space between the outer ring steel mesh 2 and the second inner ring steel mesh 4), preventing them from directly entering the main channel. Subsequently, the first inner ring steel mesh 3 is fixed by the annular protrusion 301 and the annular concave 401 of the second inner ring steel mesh 4. The first through hole 302 on its mesh surface further intercepts medium-sized particles. The built-in filter structure 5 achieves physical interception through multiple layers of interlaced cavities and the second through hole 503, that is, particles of different sizes are intercepted in layers. Furthermore, the three-dimensional structure of the filter structure 5 is difficult for iron wire to penetrate, which can effectively prevent water theft. Finally, the three filter chambers set in the second inner ring steel mesh 4 have progressively smaller filter pore diameters, which can achieve a progressive fine filtration effect. Impurities are intercepted in layers in the filter chamber 202 and each level of filter chamber. The purified water flows into the water meter core to ensure metering accuracy.

[0043] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A steel mesh embedded water meter measuring tube assembly characterized by: Comprising a water meter pipe (1) connected with two end pipes for measuring water volume; an outer ring steel mesh (2) arranged at the water inlet of the water meter pipe (1); a first inner ring steel mesh (3) arranged at the inner front end of the outer ring steel mesh (2), the inner part of the first inner ring steel mesh (3) being provided with a filter structure (5); a second inner ring steel mesh (4) arranged at the inner rear end of the outer ring steel mesh (2), the inner part of the second inner ring steel mesh (4) being provided with a plurality of filter chambers.

2. A water meter measuring tube assembly with a built-in steel mesh according to claim 1, characterized in that: The bottom of the outer ring steel mesh (2) is provided with a protruding ring platform (201), and the outer ring surface of the second inner ring steel mesh (4) has a spacing with the inner ring surface of the outer ring steel mesh (2), forming a filter cavity (202).

3. A water meter measuring tube assembly with a built-in steel mesh according to claim 1, characterized in that: The first inner ring steel mesh (3) is a bowl-shaped filter mesh, and the side of the first inner ring steel mesh (3) facing the second inner ring steel mesh (4) is provided with a ring protrusion (301), and the mesh surface of the first inner ring steel mesh (3) is provided with a first through hole (302).

4. A water meter measuring tube assembly with a built-in steel mesh according to claim 1, characterized in that: The filter structure (5) is provided with at least two intersecting large supporting plates (501), and when the two large supporting plates (501) intersect, the middle parts are away from each other, forming a large isolation cavity. The filter structure (5) further comprises two intersecting small supporting plates (502), and when the two small supporting plates (502) intersect, the middle parts are away from each other, forming a small isolation cavity. The common ends of the two large supporting plates (501) intersect, the common ends of the two small supporting plates (502) intersect, and the ends of the two large supporting plates (501) are connected with the ends of the two small supporting plates (502).

5. A water meter measuring tube assembly with a built-in steel mesh according to claim 4, characterized in that: Second through holes (503) are formed on the large supporting plates (501) and the small supporting plates (502).

6. A water meter measuring tube assembly with a built-in steel mesh according to claim 3, characterized in that: Corresponding to the ring protrusion (301), a ring recess (401) is formed on the second inner ring steel mesh (4), and the first inner ring steel mesh (3) is installed on the second inner ring steel mesh (4) through the cooperation of the ring protrusion (301) and the ring recess (401).

7. A water meter measuring tube assembly with a built-in steel mesh according to claim 1, characterized in that: The second inner ring steel mesh (4) is gradually provided with a first filter chamber (403), a second filter chamber (405), and a third filter chamber (407) in the direction away from the first inner ring steel mesh (3), and the first filter chamber (403), the second filter chamber (405), and the third filter chamber (407) are respectively provided with a first filter hole (404), a second filter hole (406), and a third filter hole (408), and the hole diameters of the first filter hole (404), the second filter hole (406), and the third filter hole (408) gradually decrease.

8. A water meter measuring tube assembly with a built-in steel mesh according to claim 7, characterized in that: The chamber wall of the first filter chamber (403) is provided with an inwardly inclined inclined surface (402), and the first filter hole (404) is formed on the inclined surface (402).

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