A water meter of the rotary wing type

Abstract

The application relates to the technical field of water meters, in particular to a rotary-wing water meter which comprises a meter shell assembly and a metering module. The meter shell assembly comprises a lower shell and an upper shell. The lower shell comprises a water inlet, an inner cylinder cavity, an outer cylinder cavity and a water outlet. The outer cylinder cavity is located outside the inner cylinder cavity. The upper shell has a containing cavity. The upper shell is connected with the lower shell. The outer cylinder cavity is communicated with the containing cavity. The containing cavity and the outer cylinder cavity are coaxially arranged. The metering module comprises a filter screen box, an impeller box, a fine adjustment plate and a rotary impeller. The impeller box is abutted with the fine adjustment plate and the filter screen box respectively. The fine adjustment plate is also abutted with the bottom wall of the containing cavity. One end of the filter screen box is communicated with the inner cylinder cavity. The impeller box has an impeller cavity. The impeller cavity has an inflow port and an outflow port. The rotary impeller is rotatably installed in the impeller cavity. One end of the fine adjustment plate close to the impeller box has a convex rib. The convex rib extends into the impeller cavity. The upper and lower shells are designed in a split type, and the fine adjustment structure is arranged. The upper and lower shells are integrally sealed at the top of the middle section. The fine adjustment structure has the advantages.

Description

Technical Field

[0001] This application relates to the field of water meter technology, and more specifically to a rotary vane water meter. Background Technology

[0002] A rotary vane water meter is a type of water meter where the impeller sidewall has several blades. Water flow impacts the blades, causing the impeller to rotate, and a gear transmission system converts the number of rotations into a water consumption reading. A coaxial water meter, on the other hand, refers to a water meter where the inlet and outlet sides of the impeller housing are both located on the same axis.

[0003] Patent document (CN221425730U) discloses a coaxial water meter, including a meter housing, an impeller box, and an impeller. The impeller is rotatably disposed within the impeller box, which is located in the middle section of the meter housing. (See the accompanying drawings in the specification.) Figure 1 As can be seen, the middle section of the watch case is threadedly connected to the top opening of the middle section of the watch case via a seal. A gearbox then presses down on the seal. When water flows in from the inlet of the watch case and fills the impeller box, it is obstructed by the bottom surface of the gearbox and flows out from the top outlet of the impeller box towards the outlet of the watch case. However, since the top of the middle section of the watch case is not a single, integral seal, there is still a risk of water flowing into the gearbox after long-term use. This could lead to water damage to the gear transmission structure inside the gearbox during winter when ice forms, as the water expands. Furthermore, since the impeller box lacks an adjustment mechanism, high precision is required in the manufacturing and assembly of the impeller.

[0004] Therefore, there is a need for a coaxial rotary water meter with a fine-tuning structure and an integrated seal at the top and middle of the casing. Summary of the Invention

[0005] The main objective of this application is to provide a rotary vane water meter, wherein the rotary vane water meter includes a casing assembly and a metering module. The casing assembly includes a lower casing and an upper casing. The lower casing includes a water inlet, an inner cylinder cavity, an outer cylinder cavity, and a water outlet. The outer cylinder cavity is located outside the inner cylinder cavity. The upper casing has a receiving cavity. The upper casing is connected to the lower casing. The outer cylinder cavity communicates with the receiving cavity, and the receiving cavity and the outer cylinder cavity are coaxially arranged. The metering module includes a filter box, an impeller box, a fine-tuning plate, and a rotating impeller. The top and bottom of the impeller box abut against the fine-tuning plate and the filter box, respectively. The fine-tuning plate, with its side facing away from the impeller box, abuts against the bottom wall of the accommodating cavity. The end of the filter box facing away from the impeller box is connected to the inner cylinder cavity. The impeller box has an impeller cavity, with an inlet and an outlet at the bottom and top of the impeller cavity, respectively. The rotating impeller is rotatably installed inside the impeller cavity. The end of the fine-tuning plate near the impeller box has several protruding ribs that extend into the impeller cavity. The upper and lower shells are designed to be separated, achieving an integrated seal at the top of the middle section of the casing. By setting the fine-tuning plate and its protruding ribs, the water flow rate inside the impeller cavity can be finely adjusted, giving it the advantage of having a fine-tuning structure.

[0006] Another objective of this application is to provide a rotary vane water meter, wherein the lower housing has a first conical surface at one end of the outer cylinder cavity opening, the upper housing has a second conical surface at one end of the receiving cavity opening, and the rotary vane water meter further includes a clamp, the clamp is disposed at the connection between the upper housing and the lower housing, and clamps the upper housing and the lower housing simultaneously, and makes the second conical surface fit against the first conical surface to realize the connection between the upper housing and the lower housing.

[0007] To achieve at least one of the above-mentioned objectives, this application provides a rotary vane water meter, wherein the rotary vane water meter comprises:

[0008] The watch case assembly includes a lower housing and an upper housing. The lower housing includes a water inlet, an inner cylinder cavity, an outer cylinder cavity, and a water outlet. The outer cylinder cavity is located outside the inner cylinder cavity. The upper housing has a receiving cavity. The upper housing is connected to the lower housing. The outer cylinder cavity communicates with the receiving cavity, and the receiving cavity and the outer cylinder cavity are arranged coaxially.

[0009] The metering module includes a filter box, an impeller box, a fine-tuning plate, and a rotating impeller. The top and bottom of the impeller box abut against the fine-tuning plate and the filter box, respectively. The side of the fine-tuning plate facing away from the impeller box abuts against the bottom wall of the receiving cavity. The end of the filter box facing away from the impeller box communicates with the inner cylinder cavity. The impeller box has an impeller cavity, with an inlet and an outlet at the bottom and top, respectively. The rotating impeller is rotatably installed inside the impeller cavity. The end of the fine-tuning plate near the impeller box has several protruding ribs that extend into the impeller cavity.

[0010] In one or more embodiments of this application, the lower housing has a first conical surface at one end of the outer cylinder cavity opening, the upper housing has a second conical surface at one end of the receiving cavity opening, and the rotary water meter further includes a clamp, which is disposed at the connection between the upper housing and the lower housing, and simultaneously clamps the upper housing and the lower housing, and makes the second conical surface fit against the first conical surface.

[0011] In one or more embodiments of this application, the sidewall of the filter box has an annular protrusion, the sidewall of the annular protrusion has an external thread, the annular protrusion has a plurality of flow holes arranged in an annular array, the end of the receiving cavity near the lower housing has an internal thread, and the external thread on the annular protrusion is connected to the internal thread on the receiving cavity by means of a threaded connection.

[0012] In one or more embodiments of this application, the end of the filter box opposite to the impeller box also has an extension tube, and the outer side of the extension tube has a bent lug.

[0013] In one or more embodiments of this application, the end of the filter box away from the impeller box also has an extension portion, the extension portion has a filter hole, the filter hole is provided with a filter, the top of the inner cylinder extends upward and forms an insert ring, the insert ring is inserted between the extension portion and the extension cylinder.

[0014] In one or more embodiments of this application, the fine-tuning plate has a plurality of coaxial but spaced-apart insertion holes, and the end of the impeller box opposite to the filter box has an insertion post, which is inserted into the insertion hole.

[0015] In one or more embodiments of this application, the rib includes a ring body portion and three rib portions, the three rib portions being connected to the sidewall of the ring body portion in a ring array.

[0016] In this embodiment, the rotary vane water meter includes a housing assembly and a metering module. The housing assembly includes a lower housing and an upper housing. The lower housing includes an inlet, an inner cylinder cavity, an outer cylinder cavity, and an outlet. The outer cylinder cavity is located outside the inner cylinder cavity. The upper housing has a receiving cavity. The upper housing is connected to the lower housing, and the outer cylinder cavity communicates with the receiving cavity, which is coaxially arranged with the outer cylinder cavity. The metering module includes a filter box, an impeller box, a fine-tuning plate, and a rotating impeller. The top and bottom of the impeller box abut against the fine-tuning plate and the filter box, respectively. The fine-tuning plate is away from the impeller. One side of the impeller box abuts against the bottom wall of the receiving cavity, and the end of the filter box away from the impeller box is connected to the inner cylinder cavity. The impeller box has an impeller cavity, with an inlet and an outlet at the bottom and top of the impeller cavity, respectively. The rotating impeller is rotatably installed in the impeller cavity. The end of the fine-tuning plate near the impeller box has several protruding ribs that extend into the impeller cavity. The top of the middle section of the casing is sealed as a whole through the separate design of the upper and lower shells. By setting the fine-tuning plate and its protruding ribs, the water flow rate in the impeller cavity can be finely adjusted, which has the advantage of having a fine-tuning structure. 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 structure of a rotary vane water meter according to this application;

[0019] Figure 2 The diagram illustrates the structure of the fine-tuning plate;

[0020] Figure 3 The diagram shows... Figure 1 A magnified view of a portion at point C;

[0021] Figure 4 The diagram shows a partial structural schematic of the filter box;

[0022] Figure 5 The diagram shows... Figure 1 A magnified view of a portion of point D. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Schematic illustration of a rotary vane water meter, for reference. Figures 1 to 5 A preferred embodiment of the present invention provides a rotary vane water meter, comprising a housing assembly 10, a metering module 20, a counting module 30, and an outer cover 40.

[0028] Specifically, such as Figure 1 As shown, the watch case assembly 10 includes a lower housing 101 and an upper housing 102. The lower housing 101 includes a water inlet 1011, an inner cylinder cavity 1012, an outer cylinder cavity 1013, and a water outlet 1014. The outer cylinder cavity 1013 is located outside the inner cylinder cavity 1012. The upper housing 102 has a receiving cavity 1021. The upper housing 102 is connected to the lower housing 101. The outer cylinder cavity 1013 communicates with the receiving cavity 1021, and the receiving cavity 1021 and the outer cylinder cavity 1013 are arranged coaxially.

[0029] It should be noted that the external water source flows in from the inlet 1011, flows out along the inner cylinder cavity 1012, flows through the metering module 20, flows into the area between the cavity wall of the accommodating cavity 1021 and the metering module 20, and then flows along the outer cylinder cavity 1013 to the outlet 1014.

[0030] In addition, such as Figure 1As shown, the counting module 30 is located at one end of the upper housing 102 away from the lower housing 101. The outer cover 40 covers the counting module 30 and is fixedly connected to the upper housing 102. The fixed connection method includes, but is not limited to, threaded connection.

[0031] In addition, such as Figure 1 As shown, the metering module 20 includes a filter box 201, an impeller box 202, and a rotating impeller 203. The bottom of the impeller box 202 abuts against the filter box 201. One end of the filter box 201 away from the impeller box 202 communicates with the inner cylinder cavity 1012. The impeller box 202 has an impeller cavity 2021. The bottom and top of the impeller cavity 2021 have an inlet 2022 and an outlet 2023, respectively. The rotating impeller 203 is rotatably mounted on the filter box 201. Inside the wheel cavity 2021; in addition, the top of the rotating impeller 203 is provided with a first magnet 2031, and the counting module 30 includes a drive shaft (not shown in the figure), and a second magnet is provided on the drive shaft. The first magnet 2031 and the second magnet attract each other. The drive shaft is also connected to the counting disk in the counting module 30 through gear transmission, so that when the rotating impeller 203 rotates circumferentially, it drives the drive shaft to rotate, and causes the counting disk to move accordingly and count.

[0032] It should be noted that after the external water source flows out of the inner cylinder cavity 1012, it passes through the filter box 201 and flows into the impeller cavity 2021 through the inlet 2022 on the impeller box 202, impacting the rotating impeller 203. Subsequently, it flows out from the outlet 2023 and into the receiving cavity 1021, and then into the outer cylinder cavity 1013. It should also be noted that by configuring the watch case assembly 10 as the upper housing 102 and the lower housing 101, and as is readily apparent, the receiving cavity 1021 and the counting module 30 are not interconnected. Compared to the prior art, which uses a sealing plug and gear box to block the flow, this application has the advantage of an integrated seal at the top of the middle section of the watch case.

[0033] Furthermore, since there may be slight differences in the assembly and manufacturing precision of the rotating impeller 203, in order to fine-tune the flow rate of water entering the impeller box 202, such as... Figure 1 and Figure 2 As shown, the metering module 20 includes a fine-tuning plate 204. The top of the impeller box 202 abuts against the fine-tuning plate 204, and the side of the fine-tuning plate 204 away from the impeller box 202 abuts against the bottom wall of the receiving cavity 1021. The end of the fine-tuning plate 204 near the impeller box 202 has several protruding ribs 2041, and the protruding ribs 2041 extend into the impeller cavity 2021.

[0034] It should be noted that, since the rib 2041 extends into the impeller cavity 2021 and is arranged at a certain angle to the inlet 2022 or the outlet 2023 of the impeller cavity 2021, the rib 2041 will generate a certain resistance to the water entering the impeller box 202, thereby fine-tuning the flow rate of the water in the impeller box 202 to adjust the measurement error caused by the difference in assembly and manufacturing precision of the rotating impeller 203. Compared with the prior art, this application has the advantage of having a fine-tuning structure.

[0035] Furthermore, the reason for dividing the watch case assembly 10 into the upper housing 102 and the lower housing 101 is to accommodate the metering module 20. To achieve the connection between the upper housing 102 and the lower housing 101, as follows: Figure 1 and Figure 3 As shown, the lower housing 101 has a first conical surface 1015 at one end of the cavity opening of the outer cylinder cavity 1013, and the upper housing 102 has a second conical surface (not shown in the figure) at one end of the cavity opening of the accommodating cavity 1021. The rotary vane water meter also includes a clamp 50, which is located at the connection between the upper housing 102 and the lower housing 101, and simultaneously clamps the upper housing 102 and the lower housing 101, so that the second conical surface fits against the first conical surface 1015.

[0036] Furthermore, to fix the positions of the impeller box 202 and the fine-tuning plate 204, such as... Figure 1 , Figure 3 and Figure 4 As shown, the side wall of the filter box 201 has an annular protrusion 2011, the side wall of the annular protrusion 2011 has external threads, the annular protrusion 2011 has a plurality of flow holes 2012 arranged in an annular array, the end of the receiving cavity 1021 near the lower housing 101 has internal threads, and the external threads on the annular protrusion 2011 are connected to the internal threads on the receiving cavity 1021 by means of threaded connection.

[0037] It should be noted that when the outer side of the filter box 201 is screwed to the upper housing 102, the top and bottom of the impeller box 202 abut against the fine-tuning plate 204 and the filter box 201 respectively, while the other side of the fine-tuning plate 204 abuts against the bottom wall of the accommodating cavity 1021. When the upper housing 102 is abutted against the lower housing 101 and the second conical surface is in contact with the first conical surface 1015, the end of the filter box 201 away from the impeller box 202 extends into the inner cylinder cavity 1012, and the side wall of the end of the filter box 201 away from the impeller box 202 is in contact with the cavity wall of the inner cylinder cavity 1012. In addition, by providing the flow hole 2012 on the annular protrusion 2011, water can flow through the flow hole 2012 to the outer cylinder cavity 1013.

[0038] Furthermore, such as Figure 1 and Figure 5 As shown, the filter box 201, at the end opposite to the impeller box 202, also has an extension tube 2013, and the outer side of the extension tube 2013 has a bent ear 2014. Additionally, the filter box 201, at the end opposite to the impeller box 202, also has an insertion portion 2015, which has filter holes and a filter screen is provided on the filter holes. The top of the inner cylinder cavity 1012 extends upward to form an insert ring, which is inserted between the insertion portion 2015 and the extension tube 2013.

[0039] It should be noted that during the process of aligning the upper housing 102 with the lower housing 101 in the height direction and abutting against the lower housing 101, the insert ring extends into the annular cavity between the extension portion 2015 and the extension cylinder 2013, and the extension portion 2015 extends into the inner cylinder cavity 1012. Both provide guidance during the downward movement of the upper housing 102. In addition, when water flows into the outer cylinder cavity 1013, a portion of the water acts on the cavity between the inner wall of the bent ear 2014 and the outer wall of the extension cylinder 2013, providing a downward force to the bent ear 2014. Since the bent ear 2014 is fixedly connected to the filter box 201, the filter box 201 is subjected to a downward force. Furthermore, since the filter box 201 is threadedly connected to the accommodating cavity 1021 of the upper housing 102, the contact between the external thread and the internal thread becomes tighter, and the second conical surface fits more closely to the first conical surface 1015.

[0040] Furthermore, to achieve the connection and angular fine-tuning of the fine-tuning plate 204 and the impeller box 202, such as... Figure 1 and Figure 2As shown, the fine-tuning plate 204 has a plurality of coaxial but spaced insertion holes 2042, and the impeller box 202 has an insertion post 2024 at one end opposite to the filter box 201, and the insertion post 2024 is inserted into the insertion hole 2042.

[0041] It should be noted that the included angle between two adjacent insertion holes 2042 is preferably 5° to 15°. By inserting the insertion post 2024 into one of the insertion holes 2042, the angle of the protruding rib 2041 relative to the inlet 2022 and the outlet 2023 on the impeller cavity 2021 is changed.

[0042] Furthermore, in the embodiments of this application, such as Figure 2 As shown, the rib 2041 includes a ring body portion 20411 and a three-rib portion 20412, and the three rib portions 20412 are connected to the side wall of the ring body portion 20411 in a ring array.

[0043] In summary, the rotary water meter described in the embodiments of this application is explained, which provides advantages such as coaxiality, fine-tuning structure, and integrated sealing of the top of the middle section of the casing.

[0044] It is worth mentioning that, in this embodiment, the rotary vane water meter has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the rotary vane 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 rotary vane water meter, characterized in that: The rotary vane water meter includes The watch case assembly includes a lower housing and an upper housing. The lower housing includes a water inlet, an inner cylinder cavity, an outer cylinder cavity, and a water outlet. The outer cylinder cavity is located outside the inner cylinder cavity. The upper housing has a receiving cavity. The upper housing is connected to the lower housing. The outer cylinder cavity communicates with the receiving cavity, and the receiving cavity and the outer cylinder cavity are arranged coaxially. The metering module includes a filter box, an impeller box, a fine-tuning plate, and a rotating impeller. The top and bottom of the impeller box abut against the fine-tuning plate and the filter box, respectively. The side of the fine-tuning plate facing away from the impeller box abuts against the bottom wall of the receiving cavity. The end of the filter box facing away from the impeller box communicates with the inner cylinder cavity. The impeller box has an impeller cavity, with an inlet and an outlet at the bottom and top, respectively. The rotating impeller is rotatably installed inside the impeller cavity. The end of the fine-tuning plate near the impeller box has several protruding ribs that extend into the impeller cavity.

2. The rotary vane water meter according to claim 1, characterized in that: The lower housing has a first conical surface at one end of the outer cylinder cavity opening, and the upper housing has a second conical surface at one end of the receiving cavity opening. The rotary water meter also includes a clamp, which is located at the connection between the upper housing and the lower housing, and simultaneously clamps the upper housing and the lower housing, so that the second conical surface fits against the first conical surface.

3. The rotary vane water meter according to claim 2, characterized in that: The sidewall of the filter box has an annular protrusion with external threads. The annular protrusion has several flow holes arranged in an annular array. The end of the receiving cavity near the lower housing has internal threads. The external threads on the annular protrusion and the internal threads on the receiving cavity are connected by a threaded connection.

4. The rotary vane water meter according to claim 3, characterized in that: The filter box also has an extension tube at the end opposite to the impeller box, and the outer side of the extension tube has a bent lug.

5. The rotary vane water meter according to claim 4, characterized in that: The filter box also has an extension portion at one end away from the impeller box. The extension portion has filter holes and a filter is provided on the filter holes. The top of the inner cylinder extends upward to form an insert ring, which is inserted between the extension portion and the extension cylinder.

6. The rotary vane water meter according to claim 1, characterized in that: The fine-tuning plate has several coaxial but spaced-apart insertion holes, and the end of the impeller box away from the filter box has an insertion post, which is inserted into the insertion hole.

7. The rotary vane water meter according to claim 6, characterized in that: The rib includes a ring body and three rib sections, and the three rib sections are connected to the sidewall of the ring body in a ring array.

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