A metering module removable volumetric water meter

Abstract

This application relates to the field of volumetric water meter technology, and more specifically to a volumetric water meter with a replaceable metering module, comprising: a meter housing, a metering module, and a clamp. The metering module includes a metering shell and an outer cover. The meter housing is made of stainless steel or copper and has a central part. The central part has an inner cylinder cavity and an outer cylinder cavity. The outer cylinder cavity is located outside the inner cylinder cavity. The water outlet extension end has a water outlet channel. The water inlet channel communicates with the inner cylinder cavity, and the outer cylinder cavity communicates with the water outlet channel. One end of the metering shell extends into the inner cylinder cavity, and the water outlet of the metering shell communicates with the outer cylinder cavity. A transmission component is rotatably installed inside the metering shell and is poweredly connected to the counting component. The metering module is detachably connected to the meter housing via the clamp. The top of the central part has a first conical surface, and the bottom of the outer cover has a second conical surface. The first conical surface and the second conical surface fit together. This utility model achieves the advantage of not being easily misaligned before installing the clamp by setting the first and second conical surfaces.

Description

Technical Field

[0001] This application relates to the field of volumetric water meter technology, and more specifically to a volumetric water meter with a replaceable metering module. Background Technology

[0002] A water meter is a measuring device used to continuously measure and record the flow rate of water through a closed pipe, and to measure water charges. A volumetric water meter is a subtype of water meter that measures water volume using a quantitative volumetric displacement method. Specifically, after water flows into a pre-designed measuring chamber inside the meter, the chamber must be completely filled and then emptied, thereby achieving precise accumulation of individual units, resulting in high measurement accuracy.

[0003] Existing volumetric water meters, including the casing and metering module, are subject to mandatory verification every 6 years according to current national standards. After this period, they need to be replaced or repaired. Currently, the entire volumetric water meter is replaced during replacement. However, since the casing is mostly made of stainless steel or copper, its manufacturing cost is high and its service life far exceeds 6 years, so replacing the whole meter is wasteful.

[0004] Additionally, a rotary vane water meter with interchangeable metering modules is disclosed in patent document (CN114777869B), as shown in the accompanying drawings of its specification. Figure 1 and Figure 3 As can be seen, the watch case has a lower convex ring, and the metering module shell has an upper convex ring. The planes of the upper and lower convex rings are both planes, and the watch case and the metering module shell are connected by a clamp. During installation, if the clamp is not tightened, the upper and lower convex rings are prone to being misaligned because the planes of the upper and lower convex rings are both planes.

[0005] Therefore, there is a need for a volumetric water meter that allows for quick assembly and disassembly of the casing and metering module, helps reduce resource waste, and is less prone to misalignment before installation of the clamp. Utility Model Content

[0006] The main objective of this application is to provide a volumetric water meter with a replaceable metering module, comprising a meter housing, a metering module, and a clamp. The meter housing has an inlet extension, a central section, and an outlet extension. The two ends of the central section are respectively connected to the inlet extension and the outlet extension. The inlet extension has an inlet channel. The central section has an inner cylinder cavity and an outer cylinder cavity, with the outer cylinder cavity located outside the inner cylinder cavity. The outlet extension has an outlet channel, the inlet channel communicating with the inner cylinder cavity, and the outer cylinder cavity communicating with the outlet channel. The meter housing is made of stainless steel or copper. The metering module includes a metering shell, a transmission assembly, and a counting assembly. The metering module is connected to the central section via the clamp. The meter housing is detachably connected. Both the metering housing and the clamp are made of plastic. One end of the metering housing extends into the cavity of the inner cylinder. The outlet of the metering housing is connected to the outer cylinder. The transmission component is rotatably installed inside the metering housing and is poweredly connected to the counting component located above. The top of the central part has a first conical surface. The metering module includes an outer cover. The bottom of the outer cover has a second conical surface. The first conical surface fits into the second conical surface. By closing or opening the clamp, the advantages of quick assembly and disassembly of the meter housing and metering module are achieved, which helps to reduce resource waste. By setting the first and second conical surfaces, the advantage of not being easily misaligned before installing the clamp is achieved.

[0007] Another objective of this application is to provide a volumetric water meter with a replaceable metering module, wherein the central part further has a first abutting plane, the outer cover has a first annular groove at one end near the second conical part, and the inner wall of the clamp has a second annular groove in the middle section. When the metering module is connected to the meter housing, the upper sidewall of the second annular groove fits against the lower sidewall of the first annular groove, and the lower sidewall of the second annular groove fits against the first abutting plane, so as to achieve the fit between the meter housing and the metering housing when the clamp is closed.

[0008] To achieve at least one of the above-mentioned inventive objectives, this application provides a volumetric water meter with a replaceable metering module, comprising a meter housing, a metering module, and a clamp. The meter housing has an inlet extension, a central portion, and an outlet extension. The two ends of the central portion are respectively connected to the inlet extension and the outlet extension. The inlet extension has an inlet channel. The central portion has an inner cylinder cavity and an outer cylinder cavity, with the outer cylinder cavity located outside the inner cylinder cavity. The outlet extension has an outlet channel, the inlet channel communicating with the inner cylinder cavity, and the outer cylinder cavity communicating with the outlet channel. The meter housing is made of stainless steel or copper. The metering module includes a metering shell, a transmission assembly, and a counting assembly. The metering module is detachably connected to the meter housing via the clamp, wherein: Both the metering shell and the clamp are made of plastic. One end of the metering shell extends into the cavity of the inner cylinder. The outlet of the metering shell is connected to the outer cylinder. The transmission assembly is rotatably installed inside the metering shell and is poweredly connected to the counting assembly located above. The top of the central part has a first conical surface. The metering module includes an outer cover. The bottom of the outer cover has a second conical surface. The first conical surface fits into the second conical surface.

[0009] In one or more embodiments of this application, the central part further has a first abutting plane, the outer cover has a first annular groove at one end near the second conical part, and the inner wall of the clamp has a second annular groove in the middle section. When the metering module is connected to the watch case, the upper sidewall of the second annular groove fits against the lower sidewall of the first annular groove, and the lower sidewall of the second annular groove fits against the first abutting plane.

[0010] In one or more embodiments of this application, the lower sidewall of the first annular groove and the upper sidewall of the second annular groove are both conical surfaces.

[0011] In one or more embodiments of this application, the clamp includes two semicircular rings, one end of the two semicircular rings is hinged to each other, and the other end of the two semicircular rings is connected or separated by bolts.

[0012] In one or more embodiments of this application, the first conical surface has a concave groove on the side near the central axis of the inner cylinder cavity, and the bottom of the outer cover also has a protrusion, which is located on one side of the second conical surface and extends into the concave groove.

[0013] In one or more embodiments of this application, the first conical section has a convex ring on the side opposite to the central axis of the inner cylinder cavity, and the convex ring is located on the outside of the outer cover.

[0014] In one or more embodiments of this application, the convex ring has a plurality of discharge ports arranged in a ring array.

[0015] In one or more embodiments of this application, one end of the semi-circular ring near the bolt connection has a lead-sealed hole.

[0016] In one or more embodiments of this application, the middle section of the second conical surface has a third annular groove, and a sealing ring is provided in the third annular groove.

[0017] In one or more embodiments of this application, the metering module further includes a pressure cap, the outer cover has a recessed hole, one end of the recessed hole has an internal thread, the metering shell extends into the recessed hole, the metering shell has a second abutting surface, the pressure cap is threadedly connected to the outer cover, the top of the metering shell abuts against the bottom wall of the recessed hole, and the second abutting surface of the metering shell abuts against the pressure cap.

[0018] In this embodiment, the device includes a watch case, a metering module, and a clamp. The metering module includes a metering shell. The watch case is made of stainless steel or copper and has an inlet extension, a central section, and an outlet extension. The two ends of the central section are connected to the inlet extension and the outlet extension, respectively. The inlet extension has an inlet channel. The central section has an inner cylinder cavity and an outer cylinder cavity, with the outer cylinder cavity located outside the inner cylinder cavity. The outlet extension has an outlet channel. The inlet channel communicates with the inner cylinder cavity, and the outer cylinder cavity communicates with the outlet channel. The metering shell is made of plastic, and one end of the metering shell extends into the inner cylinder cavity. The outlet is connected to the outer cylinder cavity, and the transmission component is rotatably installed inside the metering shell and poweredly connected to the counting component located above. The metering module is detachably connected to the meter shell via a clamp. The top of the central part has a first conical surface, and the metering module includes an outer cover. The bottom of the outer cover has a second conical surface. The first conical surface and the second conical surface fit together. By closing or opening the clamp, the advantages of quick assembly and disassembly of the meter shell and the metering module are achieved, which helps to reduce resource waste. By setting the first and second conical surfaces, the advantage of not being easily misaligned before installing the clamp is achieved. Attached Figure Description

[0019] 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: Figure 1 The figure shows a cross-sectional view of a volumetric water meter with a replaceable metering module according to this application. Figure 2 The figure shows a structural schematic diagram of a volumetric water meter with a replaceable metering module; Figure 3 The diagram illustrates the structure of the watch case; Figure 4 The diagram shows... Figure 1 A magnified view of a portion at point C; Figure 5 The diagram shows a schematic of the clamp structure; Figure 6 The diagram illustrates a structure with a discharge port on a convex ring. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] An illustrative volumetric water meter with a replaceable metering module, see reference. Figures 1 to 6 According to a preferred embodiment of the present invention, a volumetric water meter with a replaceable metering module includes a meter housing 10 and a metering module 20. The meter housing 10 is made of stainless steel or copper. The metering module 20 includes a metering shell 201, a transmission component 202, and a counting component 203. The metering shell 201 is made of plastic. In addition, the transmission component 202 includes a rotating piston, a valve plate, and a rotor. The rotating piston and the valve plate can also be made of plastic. Since the structure of the transmission component 202 and the counting component 203 of the volumetric water meter is mature and is prior art in the field, it will not be described in detail here. The specific structure of the rotating piston, the valve plate, the rotor, and the counting component 203 of the transmission component 202 is referred to in the patent document (CN115290154A).

[0025] It should be noted that in existing technologies, water meters need to be replaced every six years. Because the meter housing 10 and the metering module 20 are tightly connected, making disassembly and reassembly inconvenient, in practice, the entire water meter is usually replaced. Furthermore, since the meter housing 10 is made of stainless steel or copper, its cost is high, and its robust structure ensures a lifespan far exceeding six years. Replacing the entire water meter results in significant resource waste.

[0026] Therefore, in this application, as Figure 1 and Figure 2 As shown, the volumetric water meter with a replaceable metering module also includes a clamp 30. The metering module 20 is detachably connected to the meter housing 10 through the clamp 30, and the clamp 30 is also made of plastic.

[0027] Specifically, such as Figures 1 to 3 As shown, the watch case 10 has a water inlet extension end 101, a central part 102, and a water outlet extension end 103. The two ends of the central part 102 are connected to the water inlet extension end 101 and the water outlet extension end 103, respectively. The water inlet extension end 101 has a water inlet channel 1011. The central part 102 has an inner cylinder cavity 1021 and an outer cylinder cavity 1022. The outer cylinder cavity 1022 is located outside the inner cylinder cavity 1021. The water outlet extension end 103 has a water outlet channel 1031. The water inlet channel 1011 communicates with the inner cylinder cavity 1021, and the outer cylinder cavity 1022 communicates with the water outlet channel 1031. Additionally, as... Figure 1 As shown, when the metering module 20 is installed on the housing 10, one end of the metering shell 201 extends into the cavity of the inner cylinder 1021, the outlet of the metering shell 201 is connected to the outer cylinder 1022, and the transmission component 202 is rotatably installed in the metering shell 201 and is poweredly connected to the counting component 203 located above.

[0028] It should be noted that after the external water source flows into the water inlet channel 1011, it flows into the inner cylinder cavity 1021, and then flows into the metering shell 201 from the opening of the inner cylinder cavity 1021. After driving the transmission component 202 to rotate circumferentially, the water source flows out of the metering shell 201 and into the outer cylinder cavity 1022, and is discharged along the water outlet channel 1031. The circumferential rotation of the transmission component 202 will drive the numbers on the code disk of the counting component 203 to rotate accordingly.

[0029] In addition, to enable the quick mounting and dismounting of the metering module 20 onto the watch case 10 via the clamp 30, such as Figure 4As shown, the top of the central part 102 has a first conical part 1023 and a first abutting plane 1024. The metering module 20 includes an outer cover 204. The bottom of the outer cover 204 has a second conical part 2041. The end of the outer cover 204 near the second conical part 2041 also has a first annular groove 2042. The first conical part 1023 fits into the second conical part 2041. The middle section of the inner wall of the clamp 30 has a second annular groove 301. When the metering module 20 is connected to the case 10, the upper sidewall of the second annular groove 301 fits into the lower sidewall of the first annular groove 2042, and the lower sidewall of the second annular groove 301 fits into the first abutting plane 1024.

[0030] In addition, such as Figure 2 and Figure 5 As shown, the clamp 30 includes two semicircular rings 302, one end of the two semicircular rings 302 is hinged to each other, and the other end of the two semicircular rings 302 is connected or separated by bolts.

[0031] It should be noted that during installation, refer to... Figure 1 and Figure 4The assembler aligns the second conical part 2041 of the outer cover 204 with the first conical part 1023 on the central part 102, and makes the first conical part 1023 and the second conical part 2041 fit together. Then, the two semicircular rings 302 are opened and fitted onto the outer side of the outer cover 204 and the watch case 10. Specifically, the upper sidewall of the second annular groove 301 of the clamp 30 fits with the lower sidewall of the first annular groove 2042 of the outer cover 204, and the lower sidewall of the second annular groove 301 of the clamp 30 fits with the first abutting plane 1024 of the watch case 10. Then, the other ends of the two semicircular rings 302 (i.e., the non-hinged ends) abut against each other, and then the bolts are screwed into the threaded connection holes on the two semicircular rings 302 one after another to realize the connection of the other ends of the semicircular rings 302. At this time, since the first conical surface 1023 and the second conical surface 2041 are in close contact with each other, and the end of the second conical surface 2041 with a larger radial dimension faces downward, the metering module 20 will naturally align with the central axis of the inner cylinder cavity 1021 under the action of the conical surface. In addition, since the two ends of the watch case 10 and the outer cover 204 that abut against each other are restricted by the second annular groove 301 of the clamp 30 and cannot move up and down, the metering module 20 is installed on the watch case 10; and when the metering module 20 needs to be replaced after six years, because the metering module 20 Most of the components of the 0 are made of plastic, which is low in cost. However, after long-term impact of water flow on the transmission component 202, measurement errors are likely to occur. Therefore, the measurement module 20 must be replaced. At this time, the installer only needs to unscrew the bolts on the clamp 30, then open the two semicircular rings 302, and remove the clamp 30. Then, the upper and lower parts of the contact point between the watch case 10 and the outer cover 204 are no longer restricted by the second annular groove 301, and there are no other objects restricting them. The installer can then take out the measurement module 20 from the cavity of the inner cylinder 1021 and replace it. Compared to existing technologies, this application achieves the detachable installation of the metering module 20 on the watch case 10 by setting a clamp 30, which facilitates quick assembly and disassembly of the watch case 10 and the metering module 20 and helps reduce resource waste. By setting a first conical part at the top of the central part and a second conical part at the bottom of the outer cover, the central axis of the first conical part is automatically aligned with the central axis of the second conical part when the metering shell is placed on the watch case before the clamp is tightened. Compared to existing technologies, this has the advantage of not being easily misaligned before the clamp is installed.

[0032] Additionally, in the embodiments of this application, reference is made to Figure 4 The lower sidewall of the first annular groove 2042 and the upper sidewall of the second annular groove 301 are both conical surfaces.

[0033] Furthermore, to prevent the metering module 20 from rotating circumferentially relative to the watch case 10, such as... Figure 3 and Figure 4 As shown, the first conical part 1023 has a concave groove 1025 on the side near the central axis of the inner cylinder cavity 1021, and the bottom of the outer cover 204 also has a protrusion 2043. The protrusion 2043 is located on one side of the second conical part 2041 and extends into the concave groove 1025.

[0034] However, since the height of the remaining positions on the concentric circle of the watch case 10, excluding the concave groove 1025, is higher than the bottom wall position at the concave groove 1025, if the protrusion 2043 is not aligned with the concave groove 1025 during installation, it is difficult to make the first conical surface 1023 and the second conical surface 2041 fit together. Therefore, if... Figure 3 and Figure 4 As shown, the first conical surface 1023 has a protruding ring 1026 on the side opposite to the central axis of the inner cylinder cavity 1021. The protruding ring 1026 is located on the outside of the outer cover 204, and the height of the protruding ring 1026 is higher than the height of the protrusion 2043.

[0035] It should be noted that during installation, if the protrusion 2043 is not aligned with the concave groove 1025, the outer cover 204 will be tilted as a whole. That is, the outer cover 204 can be considered to be tilted with the protrusion 2043 as a support rod. However, since the side wall of the outer cover 204 near the opening of the first annular groove 2042 is still located in the inner side wall of the protruding ring 1026, if the installer slips and applies a radial force to the outer cover 204, the outer cover 204 will... 4. If one end of the first annular groove 2042 is still placed inside the convex ring 1026, the installer only needs to rotate the outer cover 204 and, at a certain moment, align the protrusion 2043 with the concave slot 1025. When the protrusion 2043 is directly opposite the concave slot 1025, the outer cover 204 will change from its original tilted state to a vertical arrangement of the central axis of the outer cover 204 under the action of gravity, and the overall height of the outer cover 204 will move downward by a predetermined distance.

[0036] It should also be noted that in one embodiment of this application, the convex ring 1026 is a complete circular ring. However, this results in the use of more material for the convex ring 1026, which, since the watch case 10 is made of stainless steel or copper, leads to a significant increase in cost.

[0037] Therefore, in another embodiment of this application, reference is made to... Figure 6The convex ring 1026 has a plurality of material discharge ports 1027 arranged in a ring array. By setting multiple material discharge ports 1027, the amount of material used in the convex ring 1026 is reduced, which has the advantage of lower manufacturing cost compared with the previous embodiment.

[0038] Furthermore, to avoid users having to unscrew the bolts on the clamp 30 themselves, such as... Figure 2 and Figure 5 As shown, one end of the semicircular ring 302 near the bolt connection has a lead-sealed hole 3021. The central axis of the lead-sealed hole 3021 is arranged perpendicular to the bolt on the clamp 30, and the projection of the central axis of the lead-sealed hole 3021 at an angle coincides with the bolt. When the lead-sealed steel wire rope passes through the lead-sealed hole 3021, the lead-sealed steel wire rope will prevent the user from unscrewing the bolt on the clamp 30.

[0039] Furthermore, since the metering module 20 and the watch case 10 are detachably connected, to improve the sealing at the connection point, such as... Figure 4 As shown, the middle section of the second conical surface 2041 has a third annular groove 2044, and a sealing ring is provided in the third annular groove 2044. It should be noted that when the second conical surface 2041 is in contact with the first conical surface 1023, the sealing ring is deformed and simultaneously in close contact with the groove wall of the third annular groove and the first conical surface 1023.

[0040] Furthermore, to enable the metering shell 201 to be mounted on the outer cover 204, as follows: Figure 1 and Figure 4 As shown, the metering module 20 further includes a pressure cap 205, the outer cover 204 has a recessed hole 2045, one end of the recessed hole 2045 has an internal thread, the metering shell 201 extends into the recessed hole 2045, the metering shell 201 has a second abutting surface 2011, the pressure cap 205 is threadedly connected to the outer cover 204, the top of the metering shell 201 abuts against the bottom wall of the recessed hole 2045, and the second abutting surface 2011 of the metering shell 201 abuts against the pressure cap 205.

[0041] In summary, the volumetric water meter with a replaceable metering module described in the embodiments of this application is explained, which provides advantages such as easy disassembly and assembly of the meter casing and metering module, helps to reduce resource waste, and is less prone to eccentricity before installation of the clamp.

[0042] It is worth mentioning that, in this embodiment, the volumetric water meter with a replaceable metering module has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the volumetric water meter with a replaceable metering module 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.

[0043] 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 volumetric water meter with a replaceable metering module, comprising a meter housing, a metering module, and a clamp, wherein the meter housing has an inlet extension, a central portion, and an outlet extension, the two ends of the central portion being connected to the inlet extension and the outlet extension respectively, the inlet extension having an inlet channel, the central portion having an inner cylinder cavity and an outer cylinder cavity, the outer cylinder cavity being located outside the inner cylinder cavity, the outlet extension having an outlet channel, the inlet channel communicating with the inner cylinder cavity, and the outer cylinder cavity communicating with the outlet channel, the meter housing being made of stainless steel or copper, the metering module comprising a metering shell, a transmission assembly, and a counting assembly, the metering module being detachably connected to the meter housing via the clamp, characterized in that: Both the metering shell and the clamp are made of plastic. One end of the metering shell extends into the cavity of the inner cylinder. The outlet of the metering shell is connected to the outer cylinder. The transmission assembly is rotatably installed inside the metering shell and is poweredly connected to the counting assembly located above. The top of the central part has a first conical surface. The metering module includes an outer cover. The bottom of the outer cover has a second conical surface. The first conical surface fits into the second conical surface.

2. The volumetric water meter with a replaceable metering module according to claim 1, characterized in that: The central part also has a first abutting plane, and the outer cover has a first annular groove at one end near the second conical part. The inner wall of the clamp has a second annular groove in the middle section. When the metering module is connected to the watch case, the upper sidewall of the second annular groove fits against the lower sidewall of the first annular groove, and the lower sidewall of the second annular groove fits against the first abutting plane.

3. The volumetric water meter with a replaceable metering module according to claim 2, characterized in that: The lower sidewall of the first annular groove and the upper sidewall of the second annular groove are both conical surfaces.

4. The volumetric water meter with a replaceable metering module according to claim 2, characterized in that: The clamp includes two semicircular rings, one end of which is hinged to each other, and the other end of which is connected or separated by bolts.

5. The volumetric water meter with a replaceable metering module according to claim 4, characterized in that: The first conical part has a concave groove on the side near the central axis of the inner cylinder cavity, and the bottom of the outer cover also has a protrusion, which is located on one side of the second conical part and extends into the concave groove.

6. The volumetric water meter with a replaceable metering module according to claim 1, characterized in that: The first conical section has a protruding ring on the side opposite to the central axis of the inner cylinder cavity, and the protruding ring is located on the outside of the outer cover.

7. The volumetric water meter with a replaceable metering module according to claim 6, characterized in that: The convex ring has several discharge ports arranged in a ring array.

8. The volumetric water meter with a replaceable metering module according to claim 4 or 5, characterized in that: One of the semicircular rings has a lead-sealed hole at one end near the bolt connection.

9. The volumetric water meter with a replaceable metering module according to claim 8, characterized in that: The middle section of the second conical surface has a third annular groove, and a sealing ring is provided in the third annular groove.

10. The volumetric water meter with a replaceable metering module according to claim 9, characterized in that: The metering module also includes a pressure cap, the outer cover has a recessed hole, one end of the recessed hole has an internal thread, the metering shell extends into the recessed hole, the metering shell has a second abutting surface, the pressure cap is threadedly connected to the outer cover, the top of the metering shell abuts against the bottom wall of the recessed hole, and the second abutting surface of the metering shell abuts against the pressure cap.

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