Water stealing prevention structure of rotary wing type water meter

Abstract

The utility model relates to the technical field of water meters, in particular to a water stealing prevention structure of a rotary wing type water meter, which comprises a water meter shell, a metering structure, a counting structure, a clamping plate and a water stealing prevention structure, the water meter shell is provided with a water inlet channel and a water outlet channel, and the metering structure is arranged between the water inlet channel and the water outlet channel; the metering structure comprises a first rotating part, the top of the first rotating part is provided with lower magnetic steel, the counting structure comprises a second rotating part, the second rotating part is provided with upper magnetic steel, the clamping plate is provided with a containing cavity and a concave cavity, the water stealing prevention structure comprises a first antimagnetic ring, a second antimagnetic ring and a third antimagnetic ring, the first antimagnetic ring is arranged in the containing cavity and located on the outer side of the lower magnetic steel, and the second antimagnetic ring is arranged in the concave cavity. The second antimagnetic ring is located in the concave cavity and located on the outer side of the upper magnetic steel, the third antimagnetic ring is located on the outer side of the second antimagnetic ring, and the highest point of the third antimagnetic ring is higher than the highest point of the second antimagnetic ring.

Description

Technical Field

[0001] This application relates to the field of water meter technology, and more specifically to an anti-theft structure for a rotary vane water meter. Background Technology

[0002] Rotary vane water meters are suitable for measuring the total unidirectional water flow in small-diameter pipes. Water enters the meter casing through the inlet and flows into the impeller box, impacting the impeller. The impeller rotates, causing the upper counting mechanism to activate, while the water flows out from the outlet hole at the top of the impeller box through the outlet of the meter casing.

[0003] Patent document (CN217132283U) discloses a dry-type water meter with an enhanced antimagnetic ring, including a water meter body and a control box sealed on the water meter body. The water meter body contains a metering mechanism, which includes an impeller shaft rotatably connected to the water meter body and a lower magnet driven by the impeller shaft. The control box contains a counting mechanism, which includes a counter and an upper magnet driven by the counter. The lower magnet magnetically drives the upper magnet to rotate synchronously. The control box contains an antimagnetic ring, which, together with the bottom plate of the control box, forms a shielding cavity, in which the upper magnet is housed. However, because the antimagnetic ring is only located on the outside of the upper magnet, external personnel can still use the magnetic force of the magnet to attract the lower magnet and make it difficult for the impeller shaft to rotate. Since the upper magnet rotates with the lower magnet, it is naturally difficult for it to rotate and count, thus achieving the purpose of water theft.

[0004] Therefore, there is a need for a water-stealing structure in a rotary water meter where both the upper and lower magnets have anti-magnetic rings on their outer sides, making it difficult for external magnets to attract the upper and lower magnets. Utility Model Content

[0005] The main objective of this application is to provide an anti-theft structure for a rotary vane water meter, comprising a meter casing, a metering structure, and a counting structure. The meter casing has a water inlet channel and a water outlet channel. The metering structure is installed between the water inlet channel and the water outlet channel. The metering structure includes a metering base and a first rotating component. The metering base has a metering cavity, and the first rotating component is rotatably installed within the metering cavity. A lower magnet is provided on the top of the first rotating component. The counting structure includes a copper sealing assembly and a second rotating component. The copper sealing assembly is installed on the meter casing, and the second rotating component is located directly above the first rotating component at a predetermined distance. An upper magnet is provided at one end of the second rotating component near the first rotating component. When the first rotating component rotates, the second rotating component rotates accordingly. The anti-theft structure of the rotary vane water meter... It also includes a clamping plate and an anti-theft structure. The clamping plate is located between the metering seat and the copper sealing assembly. The clamping plate has a receiving cavity at one end near the metering seat and a recess at one end near the copper sealing assembly. The anti-theft structure includes a first anti-magnetic ring, a second anti-magnetic ring, and a third anti-magnetic ring. The first anti-magnetic ring is located in the receiving cavity and outside the lower magnet. The second anti-magnetic ring is located in the recess and outside the upper magnet. The third anti-magnetic ring is located at one end of the clamping plate near the copper sealing assembly and outside the second anti-magnetic ring. The highest point of the third anti-magnetic ring is higher than the highest point of the second anti-magnetic ring, and the lowest point of the third anti-magnetic ring is close to the first anti-magnetic ring. By setting anti-magnetic rings on the outside of both the lower and upper magnets, the advantage of making it difficult for external magnets to attract the upper and lower magnets is achieved.

[0006] Another objective of this application is to provide an anti-theft structure for a rotary vane water meter, wherein the anti-theft structure further includes a magnetic ring seat, the first anti-magnetic ring is fitted onto the magnetic ring seat, the first anti-magnetic ring and the magnetic ring seat are integrally injection molded to form an anti-magnetic component, the magnetic ring seat is embedded in the accommodating cavity, and the first anti-magnetic ring is wrapped by setting the magnetic ring seat.

[0007] To achieve at least one of the above-mentioned objectives, this application provides an anti-theft structure for a rotary vane water meter, comprising a water meter casing, a metering structure, and a counting structure. The water meter casing has a water inlet channel and a water outlet channel. The metering structure is installed between the water inlet channel and the water outlet channel. The metering structure includes a metering base and a first rotating member. The metering base has a metering cavity. The first rotating member is rotatably installed in the metering cavity. A lower magnet is provided on the top of the first rotating member. The counting structure includes a copper sealing assembly and a second rotating member. The copper sealing assembly is installed on the water meter casing, and the second rotating member is located directly above the first rotating member and spaced at a predetermined distance. An upper magnet is provided at one end of the second rotating member near the first rotating member. When the first rotating member rotates, the second rotating member rotates accordingly. The anti-theft structure of the rotary vane water meter further includes:

[0008] A clamping plate, located between the metering seat and the copper sealing assembly, having a receiving cavity at one end near the metering seat and a recessed cavity at the other end near the copper sealing assembly; and

[0009] An anti-theft structure includes a first anti-magnetic ring, a second anti-magnetic ring, and a third anti-magnetic ring. The first anti-magnetic ring is disposed within the accommodating cavity and located outside the lower magnet. The second anti-magnetic ring is located within the concave cavity and located outside the upper magnet. The third anti-magnetic ring is disposed at one end of the clamping plate near the copper sealing assembly, and is located outside the second anti-magnetic ring. The highest point of the third anti-magnetic ring is higher than the highest point of the second anti-magnetic ring, and the lowest point of the third anti-magnetic ring is close to the first anti-magnetic ring.

[0010] In one or more embodiments of this application, the anti-water theft structure further includes a magnetic ring seat, the first anti-magnetic ring is fitted onto the magnetic ring seat, the first anti-magnetic ring and the magnetic ring seat are integrally injection molded to form an anti-magnetic component, and the magnetic ring seat is embedded in the accommodating cavity.

[0011] In one or more embodiments of this application, the first antimagnetic ring includes a first cylindrical portion, an outer folded edge portion, a secondary bend portion, and a hooked edge portion. The two ends of the outer folded edge portion are respectively connected to the top of the first cylindrical portion and the top of the secondary bend portion. One end of the hooked edge portion is connected to the bottom of the secondary bend portion. The magnetic ring seat includes an annular cavity, an insertion end, and an L-shaped annular cavity. The first cylindrical portion extends into the annular cavity. The insertion end extends between the first cylindrical portion and the secondary bend portion and abuts against the outer folded edge portion. The secondary bend portion and the hooked edge portion are engaged in the L-shaped annular cavity. The outer side wall of the magnetic ring seat near the first rotating member also has an annular notch.

[0012] In one or more embodiments of this application, the clamping plate has an annular blocking portion and an annular protrusion at one end near the first rotating member. The annular blocking portion extends into the annular notch and abuts against the wall of the annular notch. The inner sidewall of the antimagnetic component abuts against the annular protrusion.

[0013] In one or more embodiments of this application, the clamping plate and the antimagnetic component are integrally injection molded.

[0014] In one or more embodiments of this application, the annular blocking portion is a disassembly ring, and the disassembly ring is detachably connected to the clamping plate.

[0015] In one or more embodiments of this application, the clamping plate has an adjustment protrusion at one end near the metering structure, and the metering seat has a plurality of ring-shaped slots at one end near the clamping plate. The adjustment protrusion is engaged in one of the slots. The sidewall of the metering seat has a first flow hole and a second flow hole arranged at intervals in the height direction. The two ends of the first flow hole are respectively connected to the metering cavity and the water inlet channel, and the two ends of the second flow hole are respectively connected to the metering cavity and the water outlet channel.

[0016] In this embodiment, the anti-theft structure of the rotary vane water meter includes a water meter casing, a metering structure, a counting structure, a clamping plate, and an anti-theft structure. The water meter casing has a water inlet channel and a water outlet channel. The metering structure is installed between the water inlet channel and the water outlet channel. The metering structure includes a first rotating member with a lower magnet at its top. The counting structure includes a second rotating member located directly above the first rotating member and spaced at a predetermined distance. The second rotating member has an upper magnet. The clamping plate has a receiving cavity and... The recessed cavity and anti-theft structure include a first anti-magnetic ring, a second anti-magnetic ring, and a third anti-magnetic ring. The first anti-magnetic ring is located inside the cavity and outside the lower magnet. The second anti-magnetic ring is located inside the cavity and outside the upper magnet. The third anti-magnetic ring is located outside the second anti-magnetic ring, and the highest point of the third anti-magnetic ring is higher than the highest point of the second anti-magnetic ring. The lowest point of the third anti-magnetic ring is close to the first anti-magnetic ring. By setting anti-magnetic rings on the outside of both the lower and upper magnets, the advantage of making it difficult for external magnets to attract the upper and lower magnets is achieved. Attached Figure Description

[0017] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0018] Figure 1 The figure shows a schematic diagram of the anti-theft structure of a rotary vane water meter according to the first embodiment of this application;

[0019] Figure 2 The diagram shows Figure 1A magnified view of a portion at point C;

[0020] Figure 3 The diagram illustrates the structure of the antimagnetic component.

[0021] Figure 4 The figure shows a schematic diagram of the antimagnetic component installed on the clamp plate according to the second embodiment of this application;

[0022] Figure 5 The diagram illustrates the structural arrangement of the clamping plate and the measuring base.

[0023] Figure 6 The diagram shows Figure 5 A magnified view of a portion of point D. Detailed Implementation

[0024] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0025] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0026] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0028] The schematic diagram illustrates the anti-theft structure of a rotary vane water meter, for reference. Figures 1 to 6According to any embodiment of the present utility model, a water theft prevention structure for a rotary vane water meter includes a water meter casing 10, a metering structure 20, and a counting structure 30.

[0029] Specifically, in any embodiment of this application, such as Figure 1 and Figure 2 As shown, the water meter casing 10 has a water inlet channel 101 and a water outlet channel 102. The metering structure 20 is installed between the water inlet channel 101 and the water outlet channel 102. The metering structure 20 includes a metering base 201 and a first rotating member 202. The metering base 201 has a metering cavity 2011. The first rotating member 202 is rotatably installed in the metering cavity 2011. A lower magnet 2021 is provided on the top of the first rotating member 202. The counting structure 30 includes a copper sealing assembly 301 and a second rotating member 302. The copper sealing assembly 301 is installed on the water meter casing 10, and the second rotating member 302 is located directly above the first rotating member 202 and at a predetermined distance. An upper magnet 3021 is provided at one end of the second rotating member 302 near the first rotating member 202. When the first rotating member 202 rotates, the second rotating member 302 rotates accordingly.

[0030] It should be noted that the water source from the inlet pipe flows into the inlet channel 101 and into the metering chamber 2011 of the metering seat 201. Subsequently, the water impacts the first rotating member 202 and causes the first rotating member 202 to rotate circumferentially, and the lower magnet 2021 provided on the first rotating member 202 also rotates circumferentially. When the lower magnet 2021 rotates, under the action of magnetic force, the upper magnet 3021 rotates accordingly, and drives the second rotating member 302 to rotate, thus providing the prerequisite for counting.

[0031] Furthermore, in any embodiment of this application, such as Figure 2As shown, the anti-theft structure of the rotary vane water meter further includes a clamping plate 40 and an anti-theft structure 50. The clamping plate 40 is located between the metering seat 201 and the copper seal assembly 301. The clamping plate 40 has a receiving cavity 401 at one end near the metering seat 201, and a recessed cavity 402 and an annular groove 406 at the other end near the copper seal assembly 301. The anti-theft structure 50 includes a first antimagnetic ring 501, a second antimagnetic ring 502, and a third antimagnetic ring 503. The first antimagnetic ring 501 is disposed within the receiving cavity 401 and located on the lower magnet 2021. On the outside, the second antimagnetic ring 502 is located inside the cavity 402 and outside the upper magnet 3021. The third antimagnetic ring 503 is located at one end of the clamping plate 40 near the copper sealing assembly 301, and the third antimagnetic ring 503 is located outside the second antimagnetic ring 502. The highest point of the third antimagnetic ring 503 is higher than the highest point of the second antimagnetic ring 502, and the lowest point of the third antimagnetic ring 503 is close to the first antimagnetic ring 501. Specifically, the annular groove 406 is located outside the cavity 402, and the third antimagnetic ring 503 is located inside the annular groove 406.

[0032] It should be noted that by setting the first antimagnetic ring 501 on the outside of the lower magnet 2021 and the second antimagnetic ring 502 on the outside of the upper magnet 3021, the lower magnet 2021 and the upper magnet 3021 can be effectively prevented from stopping under lateral magnetic attraction. By setting the third antimagnetic ring 503, and ensuring that the highest point of the third antimagnetic ring 503 is higher than the highest point of the second antimagnetic ring 502, and the lowest point of the third antimagnetic ring 503 is close to the first antimagnetic ring 501, the upper magnet 3021 can be effectively prevented from being subjected to magnetic attraction from the upper side. The area between the upper magnet 3021 and the lower magnet 2021 is subjected to magnetic attraction. Compared with the prior art, which only arranges an antimagnetic ring on the outside of the upper magnet 3021, this application has the advantage that both the upper and lower magnets are provided with antimagnetic rings on their outside, making it difficult for external magnets to attract the upper and lower magnets. In addition, by setting the clamping plate 40, the first antimagnetic ring 501 is prevented from falling downward and interfering with the movement of the first rotating member 202. It should also be noted that the first rotating member 202 includes a shaft and a blade on the outside of the shaft, and the second rotating member 302 includes a shaft and a transmission gear on the shaft.

[0033] Furthermore, since the metering cavity 2011 is connected to the accommodating cavity 401, to prevent the first antimagnetic ring 501 from being in long-term contact with water, in any embodiment of this application, such as Figure 2As shown, the anti-water theft structure 50 also includes a magnetic ring seat 504. The first anti-magnetic ring 501 is fitted onto the magnetic ring seat 504. The first anti-magnetic ring 501 and the magnetic ring seat 504 are integrally injection molded to form an anti-magnetic component. The magnetic ring seat 504 is embedded in the accommodating cavity 401.

[0034] Specifically, to achieve the effect of the magnetic ring seat 504 enclosing the first antimagnetic ring 501, in any embodiment of this application, such as Figure 3 As shown, the first antimagnetic ring 501 includes a first cylindrical portion 5011, an outer folded edge portion 5012, a secondary bend portion 5013, and a hooked edge portion 5014. The two ends of the outer folded edge portion 5012 are respectively connected to the top of the first cylindrical portion 5011 and the top of the secondary bend portion 5013. One end of the hooked edge portion 5014 is connected to the bottom of the secondary bend portion 5013. The magnetic ring seat 504 includes an annular cavity 5041 and an insertion end 5042. The magnetic ring seat 504 has an L-shaped annular cavity 5043. The first cylindrical portion 5011 extends into the annular cavity 5041. The extending end 5042 extends between the first cylindrical portion 5011 and the secondary bending portion 5013 and abuts against the outer folded edge portion 5012. The secondary bending portion 5013 and the hooked edge portion 5014 are inserted into the L-shaped annular cavity 5043. The outer side wall of the magnetic ring seat 504 near the first rotating member 202 also has an annular notch 5044.

[0035] It should be noted that the magnetic ring seat 504 is preferably made of plastic. By having the magnetic ring seat 504 wrap around the first antimagnetic ring 501, the first antimagnetic ring 501 is prevented from being splashed by water for a long time. The hooked edge 5014 is inserted into the L-shaped ring cavity 5043 by injection molding.

[0036] In addition, to prevent the antimagnetic component from falling off under gravity, in any embodiment of this application, such as Figure 2 As shown, the clamping plate 40 has an annular blocking part 403 and an annular protrusion 404 at one end near the first rotating member 202. The annular blocking part 403 extends into the annular notch 5044 and abuts against the wall of the annular notch 5044. The inner sidewall of the antimagnetic component abuts against the annular protrusion 404.

[0037] It should be noted that the annular blocking part 403 restricts the movement of the antimagnetic component in the downward direction shown in the figure, and the annular protrusion 404 restricts the movement of the antimagnetic component in the left direction shown in the figure.

[0038] Furthermore, in the first embodiment of this application, to achieve the insertion of the antimagnetic component into the clamping plate 40, that is, to make the antimagnetic component snap into the area between the annular blocking portion 403 and the annular protrusion 404, as follows: Figure 2 As shown, the clamping plate 40 and the antimagnetic component are integrally injection molded. That is, the antimagnetic component is first integrally injection molded from the first antimagnetic ring 501 and the magnetic ring seat 504. Then, the antimagnetic component is placed in the corresponding mold to obtain the clamping plate 40 with the antimagnetic component embedded in it.

[0039] In the second embodiment of this application, to achieve the insertion of the antimagnetic component into the clamping plate 40, such as... Figure 4 As shown, the annular blocking part 403 is a disassembly ring 4031, and the disassembly ring 4031 is detachably connected to the clamping plate 40 by a threaded connection. That is, the difference between the annular blocking part 403 and the clamping plate 40 in this embodiment is that the annular blocking part 403 and the clamping plate 40 are no longer integrated, but are independent components. After the clamping plate 40 is formed independently, the assembler places the antimagnetic component on the clamping plate 40 and makes one side of it abut against the annular protrusion 404. Then, the disassembly ring 4031 is threadedly connected to the clamping plate 40. Specifically, the outer wall of the disassembly ring 4031 has external threads, and the end hole edge of the accommodating cavity 401 near the first rotating member 202 has internal threads.

[0040] It should be noted that the advantage of the second embodiment over the first embodiment is that during assembly, a shim can be selectively placed on the bottom wall of the receiving cavity 401 of the disassembly ring 4031. It should be pointed out that the thickness of this shim is less than half the length of the internal thread along the end hole of the receiving cavity 401 near the first rotating member 202. That is, by screwing in half a turn or one turn of the thread less, there is a gap between the antimagnetic component and the clamping plate 40 for placing the shim. Because the shim is placed, the overall height position of the antimagnetic component moves downward by a predetermined distance. That is, the antimagnetic component has a space for fine adjustment in height. This is the difference between the second embodiment and the first embodiment.

[0041] Furthermore, in any embodiment of this application, such as Figure 5 and Figure 6As shown, the clamping plate 40 has an adjustment protrusion 405 at one end near the metering structure 20, and the metering seat 201 has several ring-shaped slots 2012 at one end near the clamping plate 40. The adjustment protrusion 405 is inserted into one of the slots 2012. The side wall of the metering seat 201 has a first flow hole 2013 and a second flow hole 2014 arranged at intervals in the height direction. The two ends of the first flow hole 2013 are respectively connected to the metering cavity 2011 and the water inlet channel 101, and the two ends of the second flow hole 2014 are respectively connected to the metering cavity 2011 and the water outlet channel 102.

[0042] It should be noted that during installation, the assembler can place the adjusting protrusion 405 into one of the slots 2012. Since the multiple slots 2012 are arranged in a ring array in sequence, there are slight differences in angle. When the position of the adjusting protrusion 405 is different, by rotating the metering seat 201 by a small angle and making the adjusting protrusion 405 engage with the slot 2012 at the corresponding angle, the slight difference in angle between the first flow hole 2013 and the water inlet channel 101 can be achieved. That is, at a certain angle, the water flows into the first flow hole 2013 at a faster speed, while at another angle, the water flows a certain distance before flowing into the first flow hole 2013.

[0043] In summary, the anti-theft structure of the rotary vane water meter based on the embodiments of this application is explained, which provides advantages such as anti-magnetic rings on the outer sides of both the upper and lower magnets, making it difficult for external magnets to attract the upper and lower magnets.

[0044] It is worth mentioning that, in this embodiment, the anti-theft structure of the rotary water meter is simple, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the anti-theft structure of the rotary water meter provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0045] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.

Claims

1. A water theft prevention structure for a rotary vane water meter, comprising a water meter casing, a metering structure, and a counting structure, wherein the water meter casing has a water inlet channel and a water outlet channel, the metering structure is installed between the water inlet channel and the water outlet channel, the metering structure includes a metering base and a first rotating member, the metering base having a metering cavity, the first rotating member being rotatably installed within the metering cavity, and a lower magnet being provided on the top of the first rotating member; the counting structure includes a copper sealing assembly and a second rotating member, the copper sealing assembly being installed on the water meter casing, and the second rotating member being located directly above the first rotating member and spaced at a predetermined distance, the second rotating member having an upper magnet provided at one end near the first rotating member, and the second rotating member rotating in tandem with the first rotating member, characterized in that: The anti-theft structure of the rotary vane water meter also includes A clamping plate, located between the metering seat and the copper sealing assembly, having a receiving cavity at one end near the metering seat and a recessed cavity at the other end near the copper sealing assembly; and An anti-theft structure includes a first anti-magnetic ring, a second anti-magnetic ring, and a third anti-magnetic ring. The first anti-magnetic ring is disposed within the accommodating cavity and located outside the lower magnet. The second anti-magnetic ring is located within the concave cavity and located outside the upper magnet. The third anti-magnetic ring is disposed at one end of the clamping plate near the copper sealing assembly, and is located outside the second anti-magnetic ring. The highest point of the third anti-magnetic ring is higher than the highest point of the second anti-magnetic ring, and the lowest point of the third anti-magnetic ring is close to the first anti-magnetic ring.

2. The anti-theft structure of the rotary vane water meter according to claim 1, characterized in that: The anti-water-stealing structure also includes a magnetic ring seat, the first anti-magnetic ring is fitted into the magnetic ring seat, the first anti-magnetic ring and the magnetic ring seat are integrally injection molded to form an anti-magnetic component, and the magnetic ring seat is embedded in the accommodating cavity.

3. The anti-theft structure of the rotary vane water meter according to claim 2, characterized in that: The first antimagnetic ring includes a first cylindrical portion, an outer folded edge portion, a secondary bend portion, and a hooked edge portion. The two ends of the outer folded edge portion are respectively connected to the top of the first cylindrical portion and the top of the secondary bend portion. One end of the hooked edge portion is connected to the bottom of the secondary bend portion. The magnetic ring seat includes an annular cavity, an insertion end, and an L-shaped annular cavity. The first cylindrical portion extends into the annular cavity. The insertion end extends between the first cylindrical portion and the secondary bend portion and abuts against the outer folded edge portion. The secondary bend portion and the hooked edge portion are engaged in the L-shaped annular cavity. The outer side wall of the magnetic ring seat near the first rotating member also has an annular notch.

4. The anti-theft structure of the rotary vane water meter according to claim 3, characterized in that: The clamp plate has an annular blocking portion and an annular protrusion at one end near the first rotating member. The annular blocking portion extends into the annular notch and abuts against the wall of the annular notch. The inner wall of the antimagnetic component abuts against the annular protrusion.

5. The anti-theft structure of the rotary vane water meter according to claim 4, characterized in that: The clamping plate and the antimagnetic component are integrally injection molded.

6. The anti-theft structure of the rotary vane water meter according to claim 4, characterized in that: The annular blocking part is a disassembly ring, and the disassembly ring is detachably connected to the clamping plate.

7. The anti-theft structure of the rotary vane water meter according to claim 1, characterized in that: The clamp plate has an adjustment protrusion at one end near the metering structure. The metering seat has several ring-shaped slots at one end near the clamp plate. The adjustment protrusion is inserted into one of the slots. The side wall of the metering seat has a first flow hole and a second flow hole arranged at intervals in the height direction. The two ends of the first flow hole are respectively connected to the metering cavity and the water inlet channel. The two ends of the second flow hole are respectively connected to the metering cavity and the water outlet channel.

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