Anti-magnetic structure of water meter

Abstract

The utility model provides a kind of anti-magnetic structure of water meter belongs to water meter technical field.It solves how to avoid the problem of water stealing phenomenon occurs.In the anti-magnetic structure of this water meter, water meter includes base and the magnetic steel in the base, anti-magnetic structure includes meter cover, anti-magnetic structure further includes annular anti-magnetic sleeve, the anti-magnetic sleeve is set to base outside and around the magnetic steel setting, the anti-magnetic sleeve is positioned in the base outside along circumference direction, the meter cover is connected and fixed in the top of the base and located in the anti-magnetic sleeve above, and the meter cover is pressed on the base with the anti-magnetic sleeve.The anti-magnetic structure of this water meter can avoid the occurrence of water stealing phenomenon.

Description

Technical Field

[0001] This utility model belongs to the field of water meter technology and relates to an antimagnetic structure for a water meter. Background Technology

[0002] Water meters are very common in modern life. They are mainly installed in conjunction with tap water pipes to accurately measure the water consumption of each household and provide managers with a scientific and reasonable basis for charging. They are an indispensable metering device in current technology.

[0003] In existing technologies, the magnetic coupling effect of magnets to transmit power to the counting mechanism is a common technical means. Simply put, annular magnets are installed on both the impeller assembly and the counter, so that the impeller assembly and the counter form a structure of opposite poles. During the water flow process, the impeller assembly is driven to rotate by the water flow, and the two magnets transmit power by using the principle of like poles repulsion, thereby ensuring transmission efficiency while reducing mechanical contact wear.

[0004] However, it is precisely because water meters use two magnets to count water that some criminals have the idea to install one or more magnets outside the water meter. They use the magnetic field of the external magnets to interfere with the magnetic coupling between the two magnets, thereby causing the transmission to fail and the counter to stop. This method of stealing water is an illegal method that needs to be focused on and cracked down on nowadays. Summary of the Invention

[0005] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing an anti-magnetic structure for water meters. The technical problem this utility model aims to solve is: how to prevent water theft.

[0006] The objective of this utility model can be achieved through the following technical solution: an antimagnetic structure for a water meter, the water meter including a base and a magnet located inside the base, the antimagnetic structure including a cover, characterized in that the antimagnetic structure further includes an annular antimagnetic sleeve, the antimagnetic sleeve being disposed outside the base and surrounding the magnet, the antimagnetic sleeve being circumferentially positioned outside the base, the cover being connected and fixed to the top of the base and located above the antimagnetic sleeve, and the cover pressing the antimagnetic sleeve tightly onto the base.

[0007] This application involves installing an antimagnetic sleeve on the outside of the base. This sleeve creates a larger gap between the sleeve and the outer wall of the base, increasing the distance between the magnets inside the water meter and the external environment. If criminals attempt to interfere with the magnetic field between the two magnets inside the base using an external magnetic field, the increased distance weakens the influence of the external magnetic field, achieving a magnetic shielding effect and preventing water theft. Furthermore, the antimagnetic sleeve is initially positioned circumferentially outside the base. After the meter cover is installed, the sleeve is further pressed firmly onto the base, ensuring the stability of the antimagnetic sleeve's installation and guaranteeing its magnetic shielding effect on the base and the magnets inside, thus preventing water theft.

[0008] In the aforementioned antimagnetic structure of the water meter, the top of the base has a circumferentially oriented limiting groove, and the inner wall of the antimagnetic sleeve has an inwardly protruding insertion part. The insertion part is inserted into the limiting groove, and the lower end of the meter cover engages with the limiting groove, pressing the insertion part against the lower side wall of the limiting groove. Specifically, through the engagement of the insertion part and the limiting groove, the antimagnetic sleeve and the base are initially positioned. Then, the meter cover engages with the limiting groove at its lower end, ensuring stable installation while pressing the insertion part against the lower side wall of the limiting groove, thereby ensuring a secure installation of the antimagnetic sleeve.

[0009] In the aforementioned antimagnetic structure of the water meter, the insertion part is arranged in a ring shape along the circumference of the antimagnetic sleeve. This ensures more sufficient contact between the two, thereby improving the secure installation of the antimagnetic sleeve.

[0010] In the aforementioned antimagnetic structure of the water meter, the inner diameter of the insertion part is larger than the top outer diameter of the base. The top of the base, located above the limiting groove, has a guide surface that slopes outward from top to bottom, and this guide surface is arranged circumferentially along the base. The lower end of the side wall of the insertion part has an inclined surface, and this inclined surface is arranged circumferentially along the insertion part. The antimagnetic sleeve and the upper end of the base are assembled by an interference fit, allowing the insertion part to be inserted into the limiting groove. This prevents the antimagnetic sleeve from being easily disassembled. Furthermore, the cooperation of the guide surface and the inclined surface makes the installation of the antimagnetic sleeve easier.

[0011] In the aforementioned antimagnetic structure of the water meter, the bottom of the meter cover has an inwardly protruding hook. The hook is arranged circumferentially around the meter cover, and the meter cover engages with the limiting groove via the hook, pressing the insertion part against the lower side wall of the limiting groove. The hook at the lower end of the meter cover and the upper end of the base are also connected by an interference fit to ensure the secure installation of the meter cover, thereby ensuring the tightness of the meter cover against the antimagnetic sleeve. Furthermore, the guide surface also guides the hook of the meter cover during installation, ensuring easy installation of the meter cover.

[0012] In the aforementioned antimagnetic structure of the water meter, two clearance notches are provided at the lower end of the antimagnetic sleeve, and the two clearance notches are arranged opposite each other radially along the antimagnetic sleeve. The two clearance notches prevent interference between the antimagnetic sleeve and the two joints on the side wall of the base.

[0013] Compared with existing technologies, the antimagnetic structure of this water meter has the following advantages: an antimagnetic sleeve is set around the magnet in the circumferential direction of the outer edge of the base, and the antimagnetic sleeve is pressed and positioned on the base by the meter cover assembled on the base. Under the premise of ensuring its installation stability, the setting of the antimagnetic sleeve allows a larger space to be left between the antimagnetic sleeve and the outside of the base to achieve magnetic isolation, preventing criminals from stealing water by interfering with the magnetic field inside the base through the magnetic field of the magnet. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the anti-magnetic structure of this water meter.

[0015] Figure 2 This is a cross-sectional view and a partial enlarged view of the anti-magnetic structure of this water meter.

[0016] Figure 3 This is a schematic diagram of the antimagnetic sleeve.

[0017] Figure 4 This is a structural diagram of the base.

[0018] In the diagram, 1 is the base; 11 is the magnet; 12 is the limiting groove; 13 is the guide surface; 2 is the cover; 21 is the hook; 3 is the antimagnetic sleeve; 31 is the insertion part; 311 is the inclined surface; and 32 is the clearance notch. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] like Figure 1-4As shown, in the anti-magnetic structure of this water meter, the water meter includes a base 1, and a magnet 11 is provided in the base 1. The magnet 11 is set inside the water meter, which is the prior art. Simply put, the base 1 is provided with an impeller assembly and a counter located above the impeller assembly. Both the impeller assembly and the counter are provided with a ring-shaped magnet 11, and the two magnets 11 are arranged opposite each other at the same level.

[0021] like Figure 1-4 As shown, the antimagnetic structure includes a cover 2 and an annular antimagnetic sleeve 3. The top of the base 1 has a circumferentially opened limiting groove 12, and a guide surface 13 that slopes outward from top to bottom is provided on the top of the base 1 and above the limiting groove 12. The guide surface 13 is also arranged along the circumference of the base 1.

[0022] like Figure 1-3 As shown, the inner wall of the antimagnetic sleeve 3 has an inwardly protruding insertion part 31. The insertion part 31 is close to the middle of the antimagnetic sleeve 3 and is arranged along the circumference of the antimagnetic sleeve 3. The inner diameter of the insertion part 31 is larger than the top outer diameter of the base 1. An inclined surface 311 is provided at the bottom of the side wall of the insertion part 31, and the inclined surface 311 is arranged along the circumference of the insertion part 31. Furthermore, two clearance notches 32 are opened at the lower end of the antimagnetic sleeve 3. The two clearance notches 32 are arranged opposite each other along the radial direction of the antimagnetic sleeve 3.

[0023] like Figure 1 , Figure 2 as well as Figure 4 As shown, the bottom inner wall of the watch cover 2 has a hook 21, and the hook 21 is arranged circumferentially along the inner wall of the watch cover 2. The inner diameter of the hook 21 is larger than the outer diameter of the top of the base 1.

[0024] Assembly principle: The antimagnetic sleeve 3 is placed on the outside of the base 1 and pressed downward. With the cooperation of the guide surface 13 and the inclined surface 311, the insertion part 31 of the antimagnetic sleeve 3 is engaged in the limiting groove 12 and abuts against the lower side wall of the limiting groove 12. In this state, the two clearance notches 32 of the antimagnetic sleeve 3 are aligned with the water inlet and water outlet on the base 1. Then, the cover 2 is placed on the base 1 and pressed downward, so that the hook part 21 is engaged in the limiting groove 12 under the guidance of the guide surface 13 and the insertion part 31 is pressed against the lower side wall of the limiting groove 12. When in use, due to the presence of the antimagnetic sleeve 3, a sufficient magnetic isolation gap is formed between the outer wall of the base 1 and the inner wall of the antimagnetic sleeve 3. Through the cooperation of this magnetic isolation gap and the space left for the two magnets 11 in the base 1, magnetic isolation of each magnet 11 is achieved, preventing criminals from stealing water by affecting the magnetic field inside the base 1.

[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0026] Although this document frequently uses terms such as base 1, magnet 11, limiting groove 12, guide surface 13, cover 2, hook 21, antimagnetic sleeve 3, insertion part 31, inclined surface 311, and clearance notch 32, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An antimagnetic structure for a water meter, the water meter comprising a base (1) and a magnet (11) located within the base (1), the antimagnetic structure comprising a cover (2), characterized in that, The antimagnetic structure also includes an annular antimagnetic sleeve (3), which is disposed outside the base (1) and surrounds the magnet (11). The antimagnetic sleeve (3) is circumferentially positioned outside the base (1). The watch cover (2) is connected and fixed to the top of the base (1) and located above the antimagnetic sleeve (3), and the watch cover (2) presses the antimagnetic sleeve (3) onto the base (1).

2. The antimagnetic structure of the water meter according to claim 1, characterized in that, The base (1) has a circumferentially oriented limiting groove (12) at its top, and the inner wall of the antimagnetic sleeve (3) has an inwardly protruding insertion part (31). The insertion part (31) is inserted into the limiting groove (12), and the lower end of the watch cover (2) is engaged with the limiting groove (12) and the insertion part (31) is pressed against the lower side wall of the limiting groove (12).

3. The antimagnetic structure of the water meter according to claim 2, characterized in that, The plug-in portion (31) is arranged in a ring shape along the circumference of the antimagnetic sleeve (3).

4. The antimagnetic structure of the water meter according to claim 3, characterized in that, The inner diameter of the plug-in part (31) is larger than the top outer diameter of the base (1). The top of the base (1) is located above the limiting groove (12) and has a guide surface (13) that is inclined from top to bottom and outward. The guide surface (13) is arranged along the circumference of the base (1). The lower end of the side wall of the plug-in part (31) has an inclined surface (311) and the inclined surface (311) is arranged along the circumference of the plug-in part (31).

5. The antimagnetic structure of the water meter according to claim 2, 3, or 4, characterized in that, The bottom of the watch cover (2) has an inwardly protruding hook (21), which is arranged around the circumference of the watch cover (2). The watch cover (2) is engaged with the limiting groove (12) by the hook (21) and the plug (31) is pressed against the lower side wall of the limiting groove (12).

6. The antimagnetic structure of the water meter according to claim 5, characterized in that, The lower end of the antimagnetic sleeve (3) has two clearance notches (32), which are arranged opposite each other along the radial direction of the antimagnetic sleeve (3).

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