Assembly structure of water meter head

Abstract

The utility model discloses an assembling structure of a water meter head, which comprises a measuring tube, a hollow water meter head shell and a connecting structure used for connecting the measuring tube and the hollow water meter head shell, and the connecting structure comprises a hollow connecting cylinder and a connecting assembly arranged on the connecting cylinder and used for fixing the water meter head shell in the axial direction. The water meter head shell is arranged outside the connecting cylinder in a sleeving mode, a positioning part extending in the axial direction of the water meter head shell is arranged on the outer surface of the first connecting structure, a positioning hole corresponding to the positioning part is formed in the water meter head shell, and the positioning part and the positioning hole are connected in a clamped mode so that the water meter head shell can be positioned in the circumferential direction. The water meter head shell has the advantages that the installation process of the water meter head shell is simplified, and the installation difficulty is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid measurement devices, in particular to an assembly structure of a water meter head. Background Art

[0002] A water meter is an instrument for measuring water flow, generally divided into two categories: volumetric water meters and velocity water meters. The water meter originated in the UK and has a history of nearly two hundred years of development.

[0003] Existing water meters generally include a measuring pipe section and a water meter head assembled on the measuring pipe section. Among them, both ends of the measuring pipe section are connected to water pipes, and water flows through the measuring pipe section. The detection mechanism in the water meter head is inserted into the measuring pipe section, and the detection mechanism is used to measure the water flow rate flowing through the measuring pipe section. Currently, the water meter head and the measuring pipe section are generally assembled by screwing. For example, the Chinese utility model patent with the application number CN202021415741.3 discloses a water meter head with convenient installation, including a housing, and a detection unit is provided in the housing. Among them, the housing is composed of an upper housing and a lower housing assembled together; a first bolt fitting is provided on the inner surface of the side wall of the upper housing, and a second bolt fitting is provided on the inner surface of the side wall of the lower housing. The upper housing and the lower housing are assembled through the first bolt fitting, the second bolt fitting, and bolts. Although the firmness is high after assembly, during assembly, the upper housing must be positioned accurately to ensure the accurate docking of the first bolt fitting, the second bolt fitting, and the corresponding bolts, which increases the positioning difficulty during assembly and the assembly difficulty is high. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an assembly structure of a water meter head to reduce the installation difficulty of the water meter head housing.

[0005] The utility model is realized through the following technical solutions.

[0006] An assembly structure of a water meter head includes a measuring pipe, a water meter head housing with a hollow interior, and a connecting structure for connecting the two. The connecting structure includes a hollow connecting cylinder and a connecting component provided on the connecting cylinder and used for axially fixing the water meter head housing. The water meter head housing is sleeved outside the connecting cylinder. A positioning portion extending along the axial direction of the water meter head housing is provided on the outer surface of the connecting cylinder, and a positioning hole corresponding to the positioning portion is provided on the water meter head housing. The positioning portion is clamped with the positioning hole to circumferentially position the water meter head housing.

[0007] As a further improvement of the utility model, the positioning portion extends from one end of the connecting cylinder close to the water meter head housing towards the direction away from the water meter head housing.

[0008] As a further improvement of the present utility model, the connection assembly includes a plurality of mounting seats and first connection holes respectively arranged on the plurality of mounting seats. The first connection holes extend along the axial direction of the water meter head housing. The plurality of mounting seats are arranged in parallel at intervals along the circumferential direction of the connection cylinder. A connection ring plate is provided on the water meter head housing, and a plurality of second connection holes corresponding to the plurality of first connection holes are formed on the connection ring plate. The connection ring plate and the connection assembly are detachably connected by fasteners passing through the first connection holes and the second connection holes.

[0009] As a further improvement of the present utility model, the mounting seats are arranged on the inner wall of the connection cylinder, the connection ring plate is arranged on the inner wall of the water meter head housing, and there is a spacing distance between the connection ring plate and the end of the water meter head housing close to the connection cylinder.

[0010] As a further improvement of the present utility model, the end face of the mounting seat close to the connection ring plate is flush with the end face of the connection cylinder close to the connection ring plate.

[0011] As a further improvement of the present utility model, a sealing ring is provided between the connection cylinder and the connection ring plate.

[0012] As a further improvement of the present utility model, an inwardly concave mounting groove is formed on the end face of the connection cylinder close to the connection ring plate, and the mounting groove is used for mounting the sealing ring.

[0013] As a further improvement of the present utility model, the measuring pipe includes a main pipe section and flanges arranged at both ends of the main pipe section, and the flanges are used for fixedly connecting with other water pipes.

[0014] As a further improvement of the present utility model, the first connection hole has an internal thread, and the fastener has an external thread that matches the internal thread of the first connection hole.

[0015] Advantages of the present utility model

[0016] By providing a positioning portion extending along the axial direction of the water meter head housing on the outer surface of the connection cylinder and a positioning hole on the water meter head housing that is engaged with the positioning portion, before axially fixing the water meter head housing, the water meter head housing is already in an accurate position in its circumferential direction, simplifying the installation process and reducing the installation difficulty of the water meter head housing. Description of the drawings

[0017] The following will describe in detail the preferred embodiments of the present utility model through the drawings to help understand the purpose and advantages of the present utility model, where:

[0018] Figure 1It is a schematic structural diagram of an assembly structure of a water meter head of the present utility model;

[0019] Figure 2 It is a connection structure diagram between the connection structure and the measuring pipe;

[0020] Figure 3 It is a top view of an assembly structure of a water meter head of the present utility model;

[0021] Figure 4 It is a schematic structural diagram of the water meter head housing; Specific embodiments

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] The orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may accordingly change depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0024] This embodiment provides an assembly structure of a water meter head. Referring to Figures 1 to 4 , it includes a measuring pipe 1, a water meter head housing 2 fixed on the measuring pipe 1, and a connection structure for connecting the two. The measuring pipe 1 includes a main pipe section 11 and flanges 12 provided at both ends of the main pipe section 11. The main pipe section 11 is connected to other water pipes through the flanges 12. The interior of the water meter head housing 2 is hollow for installing a detection unit for water flow. The connection structure includes a hollow connection cylinder 31 and a connection component 33 provided on the connection cylinder 31. One end of the connection cylinder 31 is fixed on the top of the measuring pipe 1 body. The connection component 33 is used to axially fix the water meter head housing 2. The water meter head housing 2 is sleeved outside the connection cylinder 31. A positioning portion 32 extending along the axial direction of the water meter head housing 2 is provided on the outer surface of the connection cylinder 31. A positioning hole 21 corresponding to the positioning portion 32 is provided on the water meter head housing 2. The positioning portion 32 and the positioning hole 21 are in snap-fit to position the water meter head housing 2 in the circumferential direction. That is, when the water meter head housing 2 is sleeved on the connection cylinder 31, due to the existence of the positioning portion 32, it cannot move relative to the connection cylinder 31 along its circumferential direction and can only move along its own axial direction.

[0025] In this embodiment, by providing a positioning portion 32 extending axially along the water meter head housing 2 on the outer surface of the connecting cylinder 31 and providing a positioning hole 21 on the water meter head housing 2 that is snap-fitted with the positioning portion 32, before axially fixing the water meter head housing 2, the water meter head housing 2 is already in an accurate position in its circumferential direction, simplifying the installation process and reducing the installation difficulty of the water meter head housing 2.

[0026] In this embodiment, the positioning portion 32 extends from one end of the connecting cylinder 31 close to the water meter head housing 2 towards the end away from the water meter head housing 2.

[0027] In this embodiment, specifically, the connecting assembly 33 includes a plurality of mounting seats 331. Each mounting seat 331 is provided with a first connecting hole 332 that extends axially along the water meter head housing 2. The mounting seats 331 are fixed on the connecting cylinder 31, and the plurality of mounting seats 331 are arranged parallel to each other at intervals along the circumferential direction of the connecting cylinder 31. A connecting ring plate 4 is provided on the water meter head housing 2, and a plurality of second connecting holes 41 corresponding to the plurality of first connecting holes 332 are formed on the connecting ring plate 4. During installation, the connecting ring plate 4 and the mounting seats 331 are fixed by fasteners (not shown in the figure), that is, the mounting seats 331 and the connecting ring plate 4 are fixed by the fasteners passing through the first connecting holes 332 and the second connecting holes 41, thereby fixing the water meter head housing 2 on the connecting cylinder 31 and realizing the installation of the water meter head housing 2 on the measuring pipe 1.

[0028] In this embodiment, the fastener and the first connecting hole 332 may be in a threaded connection manner. The outer surface of the fastener has an external thread, and the first connecting hole 332 and the second connecting hole 41 both have internal threads that cooperate with the external thread of the fastener. Rotating the fastener can realize the disassembly and assembly between the connecting cylinder 31 and the water meter head housing 2, and the operation is convenient.

[0029] In this embodiment, for the sake of the beauty of the water meter head housing 2, the mounting seats 331 are provided on the inner wall of the connecting cylinder 31, the connecting ring plate 4 is provided on the inner wall of the water meter head housing 2, and there is a spacing distance between the connecting ring plate 4 and one end of the water meter head housing 2 close to the connecting cylinder 31.

[0030] In this embodiment, the top end face of the mounting base 331 is flush with the top end of the connecting cylinder 31. When the connecting ring plate 4 is fixedly connected to the mounting base 331, the connecting ring plate 4 can simultaneously abut against the top end faces of both the connecting cylinder 31 and the mounting base 331. Meanwhile, in order to ensure the sealing performance of the connection between the connecting cylinder 31 and the water meter head housing 2, a sealing ring (not shown in the figure) is provided between the top end face of the connecting cylinder and the lower surface of the connecting ring plate 4. Moreover, an inwardly recessed mounting groove 311 is formed on the top end face of the connecting cylinder 31. The mounting groove 311 is annular and is used for installing the sealing ring. The provision of the mounting groove 311 can prevent the sealing ring from being easily detached from the connecting cylinder 31 under the influence of external forces.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An assembly structure of a water meter head, characterized in that, It includes a measuring pipe (1), a water meter head housing (2) with a hollow interior, and a connecting structure for connecting the two. The connecting structure includes a hollow connecting cylinder (31) and a connecting component (33) provided on the connecting cylinder (31) and used for axially fixing the water meter head housing (2). The water meter head housing (2) is sleeved outside the connecting cylinder (31). A positioning portion (32) extending along the axial direction of the water meter head housing (2) is provided on the outer surface of the connecting cylinder (31). A positioning hole (21) corresponding to the positioning portion (32) is provided on the water meter head housing (2). The positioning portion (32) is clamped with the positioning hole (21) for circumferentially positioning the water meter head housing (2).

2. The assembly structure of a water meter head according to claim 1, wherein The positioning portion (32) extends from one end of the connecting cylinder (31) close to the water meter head housing (2) in a direction away from the water meter head housing (2).

3. The assembly structure of a water meter head according to claim 1, characterized in that, The connecting component (33) includes a plurality of mounting seats (331) and first connecting holes (332) respectively provided on the plurality of mounting seats (331). The first connecting holes (332) extend along the axial direction of the water meter head housing (2). The plurality of mounting seats (331) are arranged in parallel at intervals along the circumferential direction of the connecting cylinder (31). A connecting ring plate (4) is provided on the water meter head housing (2). A plurality of second connecting holes (41) corresponding to the plurality of first connecting holes (332) are formed on the connecting ring plate (4). The connecting ring plate (4) and the connecting component (33) are detachably connected by fasteners passing through the first connecting holes (332) and the second connecting holes (41).

4. The assembly structure of a water meter head according to claim 3, characterized in that, The mounting seats (331) are provided on the inner wall of the connecting cylinder (31). The connecting ring plate (4) is provided on the inner wall of the water meter head housing (2), and there is a spacing distance between the connecting ring plate (4) and one end of the water meter head housing (2) close to the connecting cylinder (31).

5. The assembly structure of a water meter head according to claim 4, characterized in that, One end face of the mounting seat (331) close to the connecting ring plate (4) is flush with one end face of the connecting cylinder (31) close to the connecting ring plate (4).

6. The assembly structure of a water meter head according to claim 5, characterized in that, A sealing ring is provided between the connecting cylinder (31) and the connecting ring plate (4).

7. The assembly structure of a water meter head according to claim 6, characterized in that, An inwardly recessed mounting groove (311) is formed on one end face of the connecting cylinder (31) close to the connecting ring plate (4). The mounting groove (311) is used for mounting the sealing ring.

8. The assembly structure of a water meter head according to claim 1, characterized in that, The measuring pipe (1) includes a main pipe section (11) and flanges (12) provided at both ends of the main pipe section (11). The flanges (12) are used for fixedly connecting with other water pipes.

9. The assembly structure of a water meter head according to claim 3, characterized in that, The first connecting hole (332) has an internal thread, and the fastener has an external thread matching the internal thread of the first connecting hole (332).

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