Water meter convenient to install

Abstract

The invention relates to the technical field of water meter application, in particular to a convenient-to-install water meter which comprises a water meter body and a body installation pipe installed on the outer ring wall of the water meter body in a mirroring mode relative to the central axis of the water meter body, and a connecting end used for being connected with an external water pipe is arranged at the end, away from the water meter body, of the body installation pipe. A compensation assembly used for adjusting the extending length of the connecting end is arranged between the connecting end and the body mounting pipe, and the adopted compensation assembly can compensate the extending length of the connecting end of the water meter body by means of the telescopic corrugated pipe, so that the connecting end can be connected with the water meter body when the distance between the connecting end and an external water pipe is changed. The extension adjustment of the connecting end is carried out in a manual adjustment mode, rapid butt joint of the connecting end and the external water pipe is met, the butt joint efficiency and tightness of the connecting end of the water meter body and the external water pipe are effectively improved, and the installation efficiency of the water meter body is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of water meter application, and in particular to a water meter that is easy to install. Background Art

[0002] Water meters are devices used to measure and record the amount of water passing through a pipe. They are widely used in homes, commercial buildings and industrial facilities to monitor and manage water usage. Water meters can be divided into the following types according to their different working principles: mechanical water meters, electromagnetic water meters, ultrasonic water meters, turbine water meters and insertion water meters.

[0003] The rotor water meter is a common volumetric mechanical water meter. Its working principle is based on the water flow driving the internal rotating parts, and then converting the number of rotations into flow readings through mechanical transmission. The rotor water meter mainly includes a water meter assembly, a shell, a shell cover, an inlet connecting pipe and an outlet connecting pipe. The water meter assembly is assembled from a measuring chamber, a rotor, a rotor shaft, bearings, a gear train, a counter, a filter, a seal and other components. The installation method of the rotor water meter is not much different from the installation method of most water meters on the market, that is, the water meter is grafted onto a section of water pipe.

[0004] There are various styles of existing rotor-type water meters, which are mainly designed according to different application scenarios, flow ranges, accuracy requirements, installation conditions and other factors. However, among the many styles, there is no water meter style that can be quickly installed when the cutting distance of the installed water pipe changes. In the actual water meter installation process, the existing water pipes need to be cut off. The installation of the water meter will be affected if the total length cut by the workers is too long or too short. If it is too long, it is difficult to ensure that the water meter connection port and the water pipe are tightly connected, which is prone to leakage and has a high resumption rate. If it is too short, secondary repair is required, which increases the workload. Both are not conducive to ensuring the overall installation efficiency of the water meter. Summary of the invention

[0005] Technical problem to be solved: The present invention provides a water meter that is easy to install and can solve the above-mentioned problems.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a water meter that is easy to install, including a water meter body, and a body mounting tube that is mirror-mounted on the outer ring wall of the water meter body with respect to the central axis of the water meter body, a connecting terminal for connecting to an external water pipe is provided at one end of the body mounting tube away from the water meter body, a compensation component for adjusting the protruding length of the connecting terminal is provided between the connecting terminal and the body mounting tube, and a packaging component for packaging the water meter is provided on the upper and lower sides of the water meter body.

[0007] The compensation component includes a sleeve fixedly connected to the outer wall of the main body mounting tube, a connecting end slidably connected in the sleeve, a telescopic bellows is fixedly installed between the connecting end and the main body mounting tube, four groups of movable grooves are equidistantly arranged on the circumference of the sleeve, each group of movable grooves is provided with a tube-resisting component for radially supporting the telescopic bellows, the tube-resisting component includes a sliding rod that moves along the radial direction of the sleeve and is arranged in the movable groove, a plurality of sliding blocks are slidably connected to the sliding rod, and the plurality of sliding blocks correspond to the grooves of the telescopic bellows one by one, a connecting column is fixedly connected to one side wall of the sliding block close to the telescopic bellows, a connecting column is fixedly connected to an end of the connecting column close to the telescopic bellows with a tube-resisting soft seat, the tube-resisting soft seat is short arc-shaped and is inserted into the groove of the telescopic bellows, and a synchronous locking component is provided on the outside of the sleeve for enabling the four groups of tube-resisting components to synchronously extend and lock the telescopic bellows.

[0008] The packaging assembly includes an upper shell and a lower shell which are integrally processed corresponding to the outer contour of the water meter body. The lower shell is distributed on the lower side of the water meter body, and the upper shell is distributed on the upper side of the water meter body. A positioning ring is fixedly connected to the center of the lower shell, and the water meter body is placed in the positioning ring. The side walls of the upper shell and the lower shell are provided with snap-on sockets for clamping the sleeves at the positions of the sleeves at both ends.

[0009] As a preferred technical solution of the present invention, adaptation grooves are provided at both ends of the movable groove, guide rods distributed along the radial direction of the sleeve are fixedly connected in the adaptation grooves, connecting blocks are slidably connected to the guide rods, the sliding rods are fixedly connected between the connecting blocks at both ends of the movable groove, and a spring is provided on a section of the guide rod between the connecting block and a side wall of the adaptation groove away from the telescopic bellows.

[0010] As a preferred technical solution of the present invention, the synchronous locking component includes a clamping seat that moves along the radial direction of the sleeve and is arranged one by one corresponding to the movable groove. The clamping seat is fixedly connected to the mounting rod on the side away from the telescopic bellows, and the two ends of the mounting rod are respectively slidably embedded in the radial guide grooves of the guide seats on both sides. Limiting guide grooves are also provided on the inner walls on both sides of the radial guide grooves. The position of the limiting guide groove on the mounting rod is fixedly connected to the limiting protrusion, the limiting protrusion is slidably connected to the limiting guide groove, and the guide seat is fixedly connected to the outer wall of the sleeve. Both ends of the outer wall of the sleeve are rotatably connected with swivels, and the swivels on both sides are correspondingly provided with oblique grooves, and the mounting rod is slidably connected in the correspondingly distributed oblique grooves of the swivels on both sides.

[0011] As a preferred technical solution of the present invention, the outside of the sleeve is fixedly connected to an outer tube, and a plurality of movable columns are slidably penetrated through the top of the outer tube. The inner end of the movable column is fixedly connected to the upper mounting rod, and a section of the movable column outside the outer tube is fixedly connected to a limiting plate, and a second spring is arranged between the limiting plate and the outer wall of the outer tube. The second spring is sleeved on the movable column, and a stop block is fixedly connected to the inner wall of the upper shell at the positions corresponding to the plurality of movable columns.

[0012] As a preferred technical solution of the present invention, a plurality of arcuate vertical walls are equidistantly arranged on the outer circumference of the positioning ring, the lower ends of the arcuate vertical walls are fixedly connected to the inner wall of the lower sealing shell, the plurality of arcuate vertical walls are concentric and have the same curvature, a threaded ring is commonly arranged on the outer walls of the plurality of arcuate vertical walls, a threaded ring seat is threadedly connected to the threaded ring, a turntable is fixedly connected to the outer periphery of the upper side of the threaded ring seat, and the upper sealing shell is rotatably connected to the middle part of the outer periphery of the threaded ring seat.

[0013] As a preferred technical solution of the present invention, the lower end of the threaded ring seat is rotatably connected to a mounting ring, a plurality of connecting strips are fixedly connected to the upper circumference of the mounting ring at equal intervals, a sliding opening for the movement of the connecting strips is opened in the middle of the arc-shaped vertical wall, the inner ends of the connecting strips are commonly and fixedly connected to a sleeve shell, the upper end of the sleeve shell is open, and a sealing pressure ring is fixedly connected to the lower side of the opening.

[0014] As a preferred technical solution of the present invention, a plurality of connecting ears 2 are fixedly connected to the outer edge of the upper end of the lower shell, and a positioning column is fixedly connected to the connecting ears 2. A plurality of connecting ears 1 are fixedly connected to the outer edge of the upper shell corresponding to the plurality of connecting ears 2. Positioning holes are opened in the connecting ears 1, and the positioning columns and the positioning holes are matched one by one.

[0015] Beneficial effects: 1. The compensation component adopted in the present invention can compensate for the elongation length of the connecting end of the water meter body with the help of the telescopic bellows, so that the elongation of the connecting end can be adjusted by manual adjustment when the distance between the connecting end and the external water pipe changes, thereby meeting the quick connection between the connecting end and the external water pipe, effectively improving the connection efficiency and tightness between the connecting end of the water meter body and the external water pipe, and further improving the installation efficiency of the water meter body.

[0016] 2. The anti-tube component and the synchronous locking component adopted in the present invention are used in combination to provide radial support for the telescopic bellows, ensuring the stable use of the telescopic bellows. At the same time, a multi-point and multi-line composite method is used to lock each groove segment of the telescopic bellows, which can not only ensure that the force of the telescopic bellows is balanced at each stage, but also ensure the overall locking stability of the telescopic bellows, effectively reducing the failure rate of the telescopic bellows.

[0017] 3. The packaging component used in the present invention can be used in conjunction with the compensation component. The compensation component can be controlled by opening and closing the packaging component to perform length compensation, and the installed water meter can be sealed and protected at leak-prone locations during the downward pressure stage, thereby extending the service life of the water meter and effectively reducing the re-work rate of the water meter installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a cross-sectional schematic diagram of the connection of the upper shell and the structure connected thereto of the present invention.

[0021] Figure 3 It is a three-dimensional connection schematic diagram of the lower enclosure and the structure connected thereto and the water meter body of the present invention.

[0022] Figure 4 It is a schematic cross-sectional structural diagram of the compensation component of the present invention.

[0023] Figure 5 The present invention Figure 4 Schematic diagram of the enlarged structure of area A in the middle.

[0024] Figure 6 It is a schematic cross-sectional structural diagram of the swivel position of the present invention.

[0025] Figure 7 It is a cross-sectional structural schematic diagram of the guide seat position of the present invention.

[0026] Figure 8 It is a three-dimensional structural schematic diagram of a partial structure of the pipe-receiving component of the present invention.

[0027] In the figure: 1, water meter body; 11, body mounting tube; 12, connecting end; 2, compensation assembly; 21, block; 22, telescopic bellows; 23, sleeve; 231, movable groove; 24, pipe-resisting component; 241, slider; 242, slide bar; 243, connecting column; 244, pipe-resisting soft seat; 245, connecting block; 246, guide rod; 247, adapting groove; 248, spring 1; 25, synchronous locking component; 251, movable column; 252, limit plate; 253, spring 2; 254, outer tube; 255, swivel; 25 51. Oblique groove; 256. Guide seat; 2561. Radial guide groove; 2562. Limiting guide groove; 257. Mounting rod; 2571. Limiting protrusion; 258. Clamping seat; 3. Packaging assembly; 31. Upper sealing shell; 311. Sealing pressure ring; 312. Sleeve shell; 313. Threaded ring seat; 314. Turntable; 315. Mounting ring; 316. Connecting strip; 317. Arc-shaped vertical wall; 3171. Sliding mouth; 32. Lower sealing shell; 33. Connecting ear one; 331. Positioning hole; 34. Connecting ear two; 341. Positioning column; 35. Positioning ring. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0029] See also Figure 1 and Figure 3A water meter that is easy to install includes a water meter body 1, and a body mounting tube 11 that is mirror-mounted on the outer ring wall of the water meter body 1 about the central axis of the water meter body 1, a connecting terminal 12 for connecting to an external water pipe is provided at one end of the body mounting tube 11 away from the water meter body 1, a compensation component 2 for adjusting the protruding length of the connecting terminal 12 is provided between the connecting terminal 12 and the body mounting tube 11, and a packaging component 3 for packaging the water meter is provided on the upper and lower sides of the water meter body 1.

[0030] See also Figure 1 , Figure 4 , Figure 5 and Figure 8 The compensation assembly 2 includes a sleeve 23 fixedly connected to the outer wall of the body mounting tube 11, the connecting end 12 is slidably connected in the sleeve 23, a telescopic bellows 22 is fixedly installed between the connecting end 12 and the body mounting tube 11, four groups of movable grooves 231 are equidistantly provided on the circumference of the sleeve 23, each group of movable grooves 231 is provided with a pipe-resisting component 24 for radially supporting the telescopic bellows 22, the pipe-resisting component 24 includes a slide bar 242 that moves along the radial direction of the sleeve 23 and is provided in the movable groove 231, and the slide bar 2 42 is slidably connected with a plurality of sliders 241, and the plurality of sliders 241 correspond to the grooves of the telescopic bellows 22 one by one. A connecting column 243 is fixedly connected to a side wall of the slider 241 close to the telescopic bellows 22, and a soft tube-resisting seat 244 is fixedly connected to one end of the connecting column 243 close to the telescopic bellows 22. The soft tube-resisting seat 244 is in a short arc shape and is inserted into the groove of the telescopic bellows 22. A synchronous locking component 25 is arranged on the outside of the sleeve 23 for synchronously extending and locking the telescopic bellows 22 with four groups of tube-resisting components 24.

[0031] See also Figure 1 , Figure 2 and Figure 3 The packaging assembly 3 includes an upper sealing shell 31 and a lower sealing shell 32 which are integrally processed corresponding to the outer contour of the water meter body 1. The lower sealing shell 32 is distributed on the lower side of the water meter body 1, and the upper sealing shell 31 is distributed on the upper side of the water meter body 1. A positioning ring 35 is fixedly connected to the center of the lower sealing shell 32, and the water meter body 1 is placed in the positioning ring 35. The side walls of the upper sealing shell 31 and the lower sealing shell 32 are provided with bayonet sockets for clamping the sleeve 23 at the positions corresponding to the sleeves 23 at both ends.

[0032] During specific operation, the extended length of the connecting end 12 is compensated by the telescopic deformation of the telescopic bellows 22. When the telescopic bellows 22 is extended or retracted, the position of its groove will be displaced, and the groove will drive the tube-resisting soft seat 244 to move synchronously, so that the slider 241 moves along the slide rod 242. The telescopic bellows 22 is radially supported by the tube-resisting soft seat 244, thereby increasing the radial strength of the telescopic bellows 22 and ensuring that the telescopic bellows 22 can work stably. Radial deviation and bending of the telescopic bellows 22, which would affect water flow detection, are avoided.

[0033] See also Figure 5 Adaptation grooves 247 are provided at both ends of the movable groove 231, and guide rods 246 distributed along the radial direction of the sleeve 23 are fixedly connected in the adaptation groove 247, and connecting blocks 245 are slidably connected on the guide rods 246. The sliding rod 242 is fixedly connected between the connecting blocks 245 at both ends of the movable groove 231, and a section of the guide rod 246 between the connecting blocks 245 and the adaptation groove 247 away from the side wall of the telescopic bellows 22 is sleeved with a spring 248.

[0034] During specific operation, a spring 248 applies pressure to the connecting block 245 to move toward the central axis of the telescopic bellows 22, so that the slide rod 242 can drive the tube-receiving soft seat 244 to always be close to the groove of the telescopic bellows 22, and when the telescopic bellows 22 is extended or retracted, that is, when the centrifugal distance of its groove changes, the tube-receiving soft seat 244 can adaptively maintain contact with the groove of the telescopic bellows 22.

[0035] See also Figure 4 , Figure 5 , Figure 6 and Figure 7 The synchronous locking component 25 includes a clamping seat 258 that moves along the radial direction of the sleeve 23 and is arranged one by one corresponding to the movable groove 231. The clamping seat 258 is fixedly connected to the mounting rod 257 on the side away from the telescopic bellows 22. The two ends of the mounting rod 257 are respectively slidably embedded in the radial guide grooves 2561 of the guide seats 256 on both sides. Limiting guide grooves 2562 are also provided on the inner walls of the two sides of the radial guide grooves 2561. The position corresponding to the limiting guide grooves 2562 on the mounting rod 257 is fixedly connected to the limiting protrusion 2571, and the limiting protrusion 2571 is slidably connected to the limiting guide grooves 2562. The guide seat 256 is fixedly connected to the outer wall of the sleeve 23. The two ends of the outer wall of the sleeve 23 are rotatably connected with a swivel 255. The swivels 255 on both sides are correspondingly provided with oblique grooves 2551. The mounting rod 257 is slidably connected in the oblique grooves 2551 correspondingly distributed on the swivels 255 on both sides.

[0036] See also Figure 4The sleeve 23 is fixedly connected to the outside with an outer tube 254, and a plurality of movable columns 251 are slidably penetrated through the top of the outer tube 254. The inner end of the movable column 251 is fixedly connected to the upper mounting rod 257. A section of the movable column 251 outside the outer tube 254 is fixedly connected to a limit plate 252. A spring 253 is arranged between the limit plate 252 and the outer wall of the outer tube 254. The spring 253 is sleeved on the movable column 251. The inner wall of the upper shell 31 is fixedly connected with a stop block 21 at the position corresponding to the plurality of movable columns 251.

[0037] During specific operation, the upper sealing shell 31 moves downward, so that the stop block 21 presses down the movable column 251, and the movable column 251 moves downward to control the upper mounting rod 257 to move downward, and the upper mounting rod 257 drives its own clamping seat 258 to move radially and press toward the slider 241, and the clamping seat 258 locks the position of each slider 241, and synchronously, the radial guide groove 2561 of the guide seat 256 and the oblique groove 2551 of the swivel 255 work together to make the swivel 255 rotate, and the oblique groove 2551 of the swivel 255 drives the remaining mounting rods 257 to move radially synchronously, so that the four groups of clamping seats 258 synchronously lock the positions of the sliders 241 on the four slide bars 242, and adopt a multi-point and multi-line contact locking method, which can effectively ensure that the telescopic length of the telescopic bellows 22 is fixed.

[0038] See also Figure 2 and Figure 3 A plurality of arcuate walls 317 are equidistantly arranged on the outer circumference of the positioning ring 35, and the lower ends of the arcuate walls 317 are fixedly connected to the inner wall of the lower sealing shell 32. The plurality of arcuate walls 317 are concentric and have the same curvature, and the outer walls of the plurality of arcuate walls 317 are commonly provided with a threaded ring, and a threaded ring seat 313 is threadedly connected to the threaded ring seat 313. A turntable 314 is fixedly connected to the outer periphery of the upper side of the threaded ring seat 313, and the upper sealing shell 31 is rotatably connected to the middle part of the outer periphery of the threaded ring seat 313.

[0039] During operation, the turntable 314 is rotated to control the threaded ring seat 313 to move downward along the arc-shaped vertical wall 317 , and the threaded ring seat 313 drives the lower sealing shell 32 to dock with the upper sealing shell 31 .

[0040] See also Figure 2 and Figure 3 The lower end of the threaded ring seat 313 is rotatably connected to a mounting ring 315, and a plurality of connecting strips 316 are fixedly connected to the upper circumference of the mounting ring 315 at equal intervals. A sliding opening 3171 for the movement of the connecting strips 316 is provided in the middle of the arc-shaped vertical wall 317. The inner ends of the connecting strips 316 are commonly fixedly connected to a sleeve shell 312. The upper end of the sleeve shell 312 is open, and a sealing pressure ring 311 is fixedly connected to the lower side of the opening.

[0041] During operation, the downward movement of the threaded ring seat 313 drives the sleeve 312 to move downward along the sliding opening 3171, and the sleeve 312 fastens the upper part of the water meter body 1, and the sealing pressure ring 311 presses the side gap of the transparent glass (the transparent glass is the observation window glass of the water meter), effectively ensuring the installation sealing of the transparent glass.

[0042] See also Figure 2 and Figure 3 The outer edge of the upper end of the lower shell 32 is fixedly connected with a plurality of connecting ears 34, and the connecting ears 34 are fixedly connected with positioning columns 341. The outer edge of the upper shell 31 is fixedly connected with a plurality of connecting ears 33 corresponding to the connecting ears 34, and the connecting ears 33 are provided with positioning holes 331, and the positioning columns 341 are matched with the positioning holes 331 one by one.

[0043] During specific operation, the position of the upper shell 31 can be quickly fixed by aligning the positioning column 341 with the positioning hole 331 to prevent the upper shell 31 from rotating along with the threaded ring seat 313 when the lower shell 32 moves downward.

[0044] When in use: S1: The threaded ring seat 313 is controlled to move downward along the arc-shaped vertical wall 317 by rotating the turntable 314, and the threaded ring seat 313 drives the lower shell 32 to dock with the upper shell 31. During docking, the position of the upper shell 31 is quickly fixed by aligning the positioning column 341 and the positioning hole 331, and the downward movement of the threaded ring seat 313 drives the sleeve shell 312 to move downward along the sliding mouth 3171, and the sleeve shell 312 is buckled to the upper part of the water meter body 1, and the side gap of the transparent glass is pressed by the sealing pressure ring 311.

[0045] S2: During docking, the elongated length of the connecting end 12 is adjusted as needed. During adjustment, the extended length of the connecting end 12 is compensated by the telescopic deformation of the telescopic bellows 22. When the telescopic bellows 22 is extended or retracted, the position of its groove will be displaced, and the groove will drive the tube soft seat 244 to move synchronously, so that the slider 241 moves along the slide rod 242.

[0046] S3: The upper sealing shell 31 continues to move downward, so that the stop block 21 presses down the movable column 251, and the movable column 251 moves downward to control the upper mounting rod 257 to move downward, and the upper mounting rod 257 drives its own clamping seat 258 to move radially and press toward the slider 241, and the clamping seat 258 locks the position of each slider 241, and synchronously, the radial guide groove 2561 of the guide seat 256 and the oblique groove 2551 of the swivel 255 work together to make the swivel 255 rotate, and the oblique groove 2551 of the swivel 255 drives the remaining mounting rods 257 to move radially synchronously, so that the four groups of clamping seats 258 synchronously lock the position of the sliders 241 on the four slide bars 242, complete the state locking of the telescopic bellows 22, and keep the connecting end 12 at an extended length.

[0047] S4: When secondary adjustment is required during installation, the turntable 314 is reversed to separate the upper shell 31 and the lower shell 32, and the slide bar 242 and the movable column 251 are reset by spring 1 248 and spring 253 respectively, and the locking state of the slide bar 241 is released, so that the connecting end 12 can be extended for a secondary adjustment.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water meter that is easy to install, comprising a water meter body (1), and a body mounting tube (11) mounted on an outer ring wall of the water meter body (1) in a mirror image with respect to the central axis of the water meter body (1), characterized in that: A connection end (12) for connecting to an external water pipe is provided at one end of the body installation tube (11) away from the water meter body (1); a compensation component (2) for adjusting the extension length of the connection end (12) is provided between the connection end (12) and the body installation tube (11); and a packaging component (3) for packaging the water meter is provided on the upper and lower sides of the water meter body (1); The compensation component (2) comprises a sleeve (23) fixedly connected to the outer wall of the main body mounting tube (11), a connecting end (12) slidably connected in the sleeve (23), a telescopic bellows (22) fixedly installed between the connecting end (12) and the main body mounting tube (11), four groups of movable grooves (231) equidistantly provided on the circumference of the sleeve (23), each group of movable grooves (231) is provided with a pipe-resisting component (24) for radially supporting the telescopic bellows (22), the pipe-resisting component (24) comprising a slide rod (242) movable along the radial direction of the sleeve (23) and provided in the movable groove (231), the slide rod ( A plurality of sliders (241) are slidably connected to the top of the sleeve (242), and the plurality of sliders (241) correspond to the grooves of the telescopic bellows (22) one by one. A connecting column (243) is fixedly connected to a side wall of the slider (241) close to the telescopic bellows (22), and an end of the connecting column (243) close to the telescopic bellows (22) is fixedly connected to a tube-resisting soft seat (244), and the tube-resisting soft seat (244) is short arc-shaped and is inserted into the groove of the telescopic bellows (22). A synchronous locking component (25) is provided on the outside of the sleeve (23) for enabling the four groups of tube-resisting components (24) to synchronously extend and lock the telescopic bellows (22); The packaging assembly (3) comprises an upper sealing shell (31) and a lower sealing shell (32) which are respectively integrally processed and manufactured corresponding to the outer contour of the water meter body (1); the lower sealing shell (32) is arranged on the lower side of the water meter body (1); the upper sealing shell (31) is arranged on the upper side of the water meter body (1); a positioning ring (35) is fixedly connected to the center of the lower sealing shell (32); the water meter body (1) is placed in the positioning ring (35); and the side walls of the upper sealing shell (31) and the lower sealing shell (32) are provided with bayonet holes for clamping the sleeves (23) at positions corresponding to the sleeves (23) at both ends.

2. A water meter that is easy to install according to claim 1, characterized in that: The movable groove (231) is provided with an adapting groove (247) at both ends. A guide rod (246) distributed along the radial direction of the sleeve (23) is fixedly connected in the adapting groove (247). A connecting block (245) is slidably connected to the guide rod (246). The sliding rod (242) is fixedly connected between the connecting blocks (245) at both ends of the movable groove (231). A spring (248) is sleeved on a section of the guide rod (246) between the connecting block (245) and the adapting groove (247) away from the telescopic bellows (22).

3. A water meter that is easy to install according to claim 1, characterized in that: The synchronous locking component (25) comprises a clamping seat (258) which moves along the radial direction of the sleeve (23) and is arranged one by one corresponding to the movable groove (231). The side of the clamping seat (258) away from the telescopic bellows (22) is fixedly connected to the mounting rod (257). The two ends of the mounting rod (257) are respectively slidably embedded in the radial guide grooves (2561) of the guide seats (256) on both sides. The inner walls of the two sides of the radial guide groove (2561) are also provided with limited position guide grooves (2562). The mounting rod (257) ) is fixedly connected to a position corresponding to the limit guide groove (2562) on the guide seat (256), the limit projection (2571) is slidably connected to the limit guide groove (2562), the guide seat (256) is fixedly connected to the outer wall of the sleeve (23), both ends of the outer wall of the sleeve (23) are rotatably connected to a swivel (255), and the swivels (255) on both sides are correspondingly provided with oblique grooves (2551), and the mounting rod (257) is slidably connected in the oblique grooves (2551) correspondingly distributed on the swivels (255) on both sides.

4. A water meter that is easy to install according to claim 3, characterized in that: The sleeve (23) is fixedly connected to an outer tube (254) on the outside, and a plurality of movable columns (251) are slidably penetrated through the top of the outer tube (254). The inner ends of the movable columns (251) are fixedly connected to the mounting rod (257) on the upper side. A section of the movable column (251) outside the outer tube (254) is fixedly connected to a limit plate (252). A second spring (253) is provided between the limit plate (252) and the outer wall of the outer tube (254). The second spring (253) is sleeved on the movable column (251). A stop block (21) is fixedly connected to the inner wall of the upper sealing shell (31) at positions corresponding to the plurality of movable columns (251).

5. A water meter that is easy to install according to claim 1, characterized in that: A plurality of arc-shaped vertical walls (317) are equidistantly arranged on the outer circumference of the positioning ring (35); the lower ends of the arc-shaped vertical walls (317) are fixedly connected to the inner wall of the lower sealing shell (32); and the plurality of arc-shaped vertical walls (317) are concentric and have the same curvature.

6. A water meter that is easy to install according to claim 5, characterized in that: The outer walls of the plurality of arc-shaped vertical walls (317) are commonly provided with a threaded ring, a threaded ring seat (313) is threadedly connected to the threaded ring, a rotating disk (314) is fixedly connected to the outer periphery of the upper side of the threaded ring seat (313), and the upper sealing shell (31) is rotatably connected to the middle part of the outer periphery of the threaded ring seat (313).

7. A water meter that is easy to install according to claim 6, characterized in that: The lower end of the threaded ring seat (313) is rotatably connected to a mounting ring (315), and a plurality of connecting strips (316) are fixedly connected to the upper circumference of the mounting ring (315) at equal intervals. A sliding opening (3171) for the movement of the connecting strips (316) is provided in the middle of the arc-shaped vertical wall (317), and the inner ends of the connecting strips (316) are fixedly connected to a sleeve (312). The upper end of the sleeve (312) is open, and a sealing pressure ring (311) is fixedly connected to the lower side of the opening.

8. The water meter that is easy to install according to claim 1, characterized in that: The lower sealing shell (32) is fixedly connected to a plurality of second connecting ears (34) on the outer edge of the upper end, and a positioning column (341) is fixedly connected to the second connecting ears (34). The outer edge of the upper sealing shell (31) is fixedly connected to a plurality of first connecting ears (33) corresponding to the plurality of second connecting ears (34), and a positioning hole (331) is formed in the first connecting ear (33), and the positioning column (341) and the positioning hole (331) are matched one by one.

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