Blade structure of single-flow water meter

Abstract

The utility model relates to the technical field of single-flow water meters, in particular to a blade structure of a single-flow water meter, which comprises a mounting part and a plurality of blade parts, the blade parts are arranged on the side wall of the mounting part in an annular array mode, each blade part comprises an inner side area and an outer side area, one end of the inner side area is connected with the mounting part, and the other end of the inner side area is connected with the outer side area. The blade part is provided with an inner side area and an outer side area, the other end of the inner side area is connected with the outer side area, the inner side area extends outwards in a straight line mode in the direction deviating from the central axis of the installation part, each outer side area extends in a bent arc mode in the same rotating direction, and the two side walls of the outer side area are arc faces. And the outer side area extends in a bent arc mode, so that the advantage that the contact area is larger under the condition that the inner diameter of the impeller cavity is the same is achieved.

Description

Technical Field

[0001] This application relates to the field of single-flow water meter technology, and more specifically to a blade structure for a single-flow water meter. Background Technology

[0002] A single-flow water meter is a type of water meter with only one inlet channel. Water flow is measured by impacting an impeller through a single inlet. It has a simple structure and fewer internal components.

[0003] Patent document (CN214951619U) discloses a single-flow water meter, including a first housing, a second housing located on the first housing, and an impeller rotatably located in the first housing. The first housing has a flow cavity, and an inlet and an outlet are respectively provided on both sides of the first housing. A counting device is provided in the second housing. When water flows into the flow cavity from the inlet, the impeller rotates, driving the counting device to operate. It should be noted that the blade structure on existing impellers is a straight blade structure, as shown in the attached drawings of the specification in patent document (CN214951619U). Figure 2 And the accompanying drawings of this application specification Figure 1 For blades with a straight blade structure, the overall length is greatly affected by the radial dimension of the impeller cavity, and there is room to increase the overall contact area between the blades and the water flow.

[0004] Therefore, there is a need for a blade structure for a single flow meter that provides a larger contact area while maintaining the same impeller cavity inner diameter. Utility Model Content

[0005] The main objective of this application is to provide a blade structure for a single-flow water meter, rotatably mounted on the single-flow water meter. The blade structure includes a mounting portion and multiple blade portions arranged in a ring array on the sidewall of the mounting portion. Each blade portion includes an inner region and an outer region. One end of the inner region is connected to the mounting portion, and the other end is connected to the outer region. The inner region extends outward in a straight line away from the central axis of the mounting portion. Each outer region extends in an arc along the same direction of rotation, with both sidewalls of the outer region being curved surfaces. By providing inner and outer regions on the blade portions and extending the outer regions in an arc, compared to existing technologies, this method offers the advantage of a larger contact area for the same impeller cavity inner diameter.

[0006] Another objective of this application is to provide a blade structure for a single-flow water meter, wherein the inner region and the outer region are detachably connected, and the inner region is fixedly connected to the mounting portion to accommodate blades of various specifications.

[0007] To achieve at least one of the above-mentioned objectives, this application provides a blade structure for a single-flow water meter, rotatably mounted on the single-flow water meter, wherein the blade structure of the single-flow water meter includes:

[0008] The mounting section comprises a mounting section and multiple blade sections arranged in a circular array on the sidewall of the mounting section. Each blade section includes an inner region and an outer region. One end of the inner region is connected to the mounting section, and the other end of the inner region is connected to the outer region. The inner region extends outward in a straight line in a direction away from the central axis of the mounting section. Each outer region extends in an arc along the same direction of rotation, and both sidewalls of the outer region are arc surfaces.

[0009] In one or more embodiments of this application, the length of the outer region is greater than the length of the inner region.

[0010] In one or more embodiments of this application, the height dimension of the outer region is greater than the height dimension of the inner region.

[0011] In one or more embodiments of this application, the center of the mounting part has a mounting hole, and the sidewall of the mounting hole has a plurality of arc-shaped grooves arranged in a ring array.

[0012] In one or more embodiments of this application, the inner side area and the side wall of the mounting portion have a rounded transition.

[0013] In one or more embodiments of this application, the inner region is detachably connected to the outer region, and the inner region is fixedly connected to the mounting portion.

[0014] In one or more embodiments of this application, each inner region has a mounting groove, and one end of the outer region has an extension that is inserted into the mounting groove.

[0015] In one or more embodiments of this application, the extension has a first through hole, and the inner region also has a second through hole. The second through hole extends from one side of the inner region toward the mounting groove and extends to the other side wall of the mounting groove. The wall of the second through hole extending to the side wall of the mounting groove has an internal thread. When the extension is inserted into the mounting groove and the end of the extension abuts against the bottom wall of the mounting groove, the first through hole and the second through hole are arranged coaxially. The blade structure of the single flow meter also includes a plurality of inserts. After the inserts pass through the second through hole on one side of the inner region and the first through hole on the extension, they are threadedly connected to the second through hole located on the side wall of the mounting groove.

[0016] In one or more embodiments of this application, the sidewall of the mounting groove has a first toothed groove, and the sidewall of the extension has a second toothed groove. When the extension extends into the mounting groove, the first toothed groove and the second toothed groove engage with each other.

[0017] In one or more embodiments of this application, the surface of the extension is coated with adhesive, and after the extension is inserted into the mounting groove, the extension is bonded to the mounting groove.

[0018] In this embodiment, the blade structure of the single-flow water meter is rotatably mounted on the single-flow water meter, including a mounting part and multiple blade parts. The blade parts are arranged in a ring array on the side wall of the mounting part. Each blade part includes an inner area and an outer area. One end of the inner area is connected to the mounting part, and the other end of the inner area is connected to the outer area. The inner area extends outward in a straight line in a direction away from the central axis of the mounting part. Each outer area extends in an arc along the same direction of rotation, and both sides of the outer area are arc surfaces. By setting the inner and outer areas on the blade parts and extending the outer areas in an arc, compared with the prior art, it has the advantage of a larger contact area with the same impeller cavity inner diameter. 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:

[0020] Figure 1 The diagram illustrates the impeller structure in an existing single flow meter.

[0021] Figure 2 The diagram illustrates the structure of the blades of a single-flow meter placed within the single-flow meter.

[0022] Figure 3 The diagram illustrates the structure of a single-flow water meter when the blades are connected as a single unit.

[0023] Figure 4 The diagram illustrates the structure of the impeller shaft in a single flow meter.

[0024] Figure 5 The diagram illustrates the structure of the mounting section and the inner area when the blade structure of a single flow meter is designed as a split unit.

[0025] Figure 6 The diagram illustrates the structure of the outer section when the blade structure of a single flow meter is designed as a split unit.

[0026] Figure 7 The diagram shows Figure 5 A magnified view of a portion of point C. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The blade structure of a schematic single-flow water meter is shown for reference. Figures 2 to 7 According to a preferred embodiment of the present invention, the blade structure of a single-flow water meter is rotatably mounted on the single-flow water meter. It should be noted that, as... Figure 2 As shown, the single-flow water meter includes a housing 90, which has an inlet 91, an outlet 92, and an impeller cavity 93. The blade structure of the single-flow water meter is rotatably mounted in the impeller cavity 93 via an impeller shaft 94. When external water flows into the impeller cavity 93 through the inlet 91, a rotational force is applied to the blade structure of the single-flow water meter, causing the impeller shaft 94 to rotate circumferentially. Subsequently, the water flows out through the outlet 92.

[0032] like Figure 3As shown, the blade structure of the single-flow water meter includes a mounting part 10 and a plurality of blade parts 20. The blade parts 20 are arranged in a ring array on the side wall of the mounting part 10. Each blade part 20 includes an inner region 201 and an outer region 202. One end of the inner region 201 is connected to the mounting part 10, and the other end of the inner region 201 is connected to the outer region 202. The inner region 201 extends outward in a straight line in a direction away from the central axis of the mounting part 10. Each outer region 202 extends in an arc along the same direction of rotation, and both sides of the outer region 202 are arc surfaces.

[0033] It should be noted that in the prior art, the blade portion 20 is in the shape of a straight blade, and the overall length of the blade portion 20 is smaller than the radius of the outer impeller cavity, resulting in a limited contact area between the blade portion 20 and the water flow. However, in this embodiment, by implementing the blade portion 20 as the inner region 201 and the outer region 202, and with the outer region 202 extending in an arc shape, the outer region 202 has a larger overall length and surface area under the same radius of the outer impeller cavity, resulting in a larger contact area between the blade portion 20 and the water flow. In addition, since the sidewall of the outer region 202 is an arc surface, the curvature of the arc surface disperses the force after the water flow contacts the arc surface, making the rotation of the impeller portion more uniform and stable. Compared with the prior art, this has the advantage of a larger contact area under the same impeller cavity inner diameter.

[0034] Furthermore, to increase the sidewall surface area of ​​the outer region 202, in this application, as follows: Figure 3 As shown, the length of the outer region 202 is greater than the length of the inner region 201, and the height of the outer region 202 is greater than the height of the inner region 201.

[0035] Furthermore, such as Figure 3 As shown, the mounting portion 10 has a mounting hole 101 at its center, and the sidewall of the mounting hole 101 has a plurality of arc-shaped grooves 102 arranged in a circular array. It should be noted that, as... Figure 4 As shown, the sidewall of the impeller shaft 94 has several arc-shaped protrusions 941. When the impeller shaft 94 passes through the mounting hole 101, the arc-shaped protrusions 941 extend into the corresponding arc-shaped grooves 102, thereby enabling the blade portion 20 to rotate synchronously with the impeller shaft 94 after being impacted by water flow.

[0036] Furthermore, the inner side area 201 and the side wall of the mounting part 10 are rounded, so that adjacent inner side areas 201 are transitioned by an arc surface.

[0037] Furthermore, in another embodiment of this application, the inner region 201 and the outer region 202 are detachably connected, and the inner region 201 is fixedly connected to the mounting portion 10. The fixed connection method includes, but is not limited to, injection molding. It should be noted that, compared to the solution of integrally injection molding the inner region 201 and the outer region 202, detachably connecting the inner region 201 and the outer region 202 improves versatility. That is, the mounting portion 10 can adapt to blade portions 20 of various sizes, and customers can select the corresponding blade portion 20 according to actual application requirements.

[0038] Specifically, to achieve a detachable connection between the inner region 201 and the outer region 202, such as Figure 5 and Figure 6 As shown, each inner region 201 has a mounting groove 2011, and one end of the outer region 202 has an extension 2021, which is inserted into the mounting groove 2011.

[0039] Furthermore, to prevent the blade portion 20 from rotating circumferentially under stress, such as Figure 5 and Figure 6 As shown, the extension 2021 disengages from the mounting groove 2011 under centrifugal force. The extension 2021 has a first through hole 2022, and the inner region 201 also has a second through hole 2012. The second through hole 2012 extends from one side of the inner region 201 toward the mounting groove 2011 and extends to the other side wall of the mounting groove 2011. The wall of the second through hole 2012 extending to the side wall of the mounting groove 2011 has an internal thread. When the extension 2021 extends into the mounting groove 2011, and the end of the extension 2021 abuts against the bottom wall of the mounting groove 2011... When the water meter is in use, the first through hole 2022 and the second through hole 2012 are arranged coaxially. The blade structure of the single flow meter also includes several inserts (not shown in the figure). The inserts pass through the second through hole 2012 on one side of the inner region 201 and the first through hole 2022 on the extension 2021, and are threadedly connected to the second through hole 2012 on one side wall of the mounting groove 2011. By having the inserts pass through the extension 2021 and connect with the inner region 201, the extension 2021 is prevented from coming out of the mounting groove 2011 along the groove depth direction of the mounting groove 2011.

[0040] Furthermore, to prevent the extension 2021 from moving radially within the mounting groove 2011, such as... Figures 5 to 7As shown, the side wall of the mounting groove 2011 has a first toothed groove 2013, and the side wall of the extension 2021 has a second toothed groove 2023. When the extension 2021 extends into the mounting groove 2011, the first toothed groove 2013 and the second toothed groove 2023 are engaged with each other.

[0041] Furthermore, to ensure that the extension 2021 is more securely placed in the mounting groove 2011, adhesive is applied to the surface of the extension 2021, and the extension 2021 is bonded to the mounting groove 2011 after it extends into the mounting groove 2011.

[0042] In summary, the blade structure of the single-flow water meter based on the embodiments of this application has been clarified, which provides advantages such as a larger contact area for the blade structure of the single-flow water meter under the same impeller cavity inner diameter.

[0043] It is worth mentioning that, in this embodiment, the blade structure of the single-flow water meter is simple, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the blade structure of the single-flow 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.

[0044] 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 blade structure for a single-flow water meter, rotatably mounted on the single-flow water meter, characterized in that: The blade structure of the single-flow water meter includes The mounting section comprises a mounting section and multiple blade sections arranged in a circular array on the sidewall of the mounting section. Each blade section includes an inner region and an outer region. One end of the inner region is connected to the mounting section, and the other end of the inner region is connected to the outer region. The inner region extends outward in a straight line in a direction away from the central axis of the mounting section. Each outer region extends in an arc along the same direction of rotation, and both sidewalls of the outer region are arc surfaces.

2. The blade structure of the single-flow water meter according to claim 1, characterized in that: The length of the outer region is greater than the length of the inner region.

3. The blade structure of the single-flow water meter according to claim 2, characterized in that: The height dimension of the outer region is greater than the height dimension of the inner region.

4. The blade structure of the single-flow water meter according to claim 3, characterized in that: The mounting part has a mounting hole at its center, and the sidewall of the mounting hole has a plurality of arc-shaped grooves arranged in a ring array.

5. The blade structure of the single-flow water meter according to claim 4, characterized in that: The inner area and the side wall of the mounting part have a rounded transition.

6. The blade structure of the single-flow water meter according to any one of claims 1-5, characterized in that: The inner area is detachably connected to the outer area, and the inner area is fixedly connected to the mounting part.

7. The blade structure of the single-flow water meter according to claim 6, characterized in that: Each of the inner regions has a mounting groove, and one end of the outer region has an extension that is inserted into the mounting groove.

8. The blade structure of the single-flow water meter according to claim 7, characterized in that: The extension has a first through hole, and the inner region also has a second through hole. The second through hole extends from one side of the inner region toward the mounting groove and extends to the other side wall of the mounting groove. The wall of the second through hole extending to the side wall of the mounting groove has an internal thread. When the extension is inserted into the mounting groove and the end of the extension abuts against the bottom wall of the mounting groove, the first through hole and the second through hole are arranged coaxially. The blade structure of the single flow meter also includes several inserts. After the inserts pass through the second through hole on one side of the inner region and the first through hole on the extension, they are threadedly connected to the second through hole located on the side wall of the mounting groove.

9. The blade structure of the single-flow water meter according to claim 8, characterized in that: The sidewall of the mounting groove has a first toothed groove, and the sidewall of the extension has a second toothed groove. When the extension extends into the mounting groove, the first toothed groove and the second toothed groove engage with each other.

10. The blade structure of the single-flow water meter according to claim 9, characterized in that: The surface of the extension is coated with adhesive, and after the extension is inserted into the mounting groove, the extension is bonded to the mounting groove.

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