Separable photoelectric direct-reading water meter

Abstract

The utility model discloses a separable photoelectric direct-reading water meter, which comprises a base meter and a photoelectric direct-reading terminal, the base meter is provided with an adapter collar and a fastener clamped with the adapter collar, the adapter collar is provided with at least two screw hole columns, the fastener is provided with through holes for exposing the screw hole columns, and the through holes are communicated with the adapter collar. The photoelectric direct-reading terminal is supported on the fastener and is connected with the screw hole column on the adapter collar through a screw, and clamping structures matched with each other are arranged between the photoelectric direct-reading terminal and the fastener. By adopting the scheme, the overall disassembly and assembly efficiency is effectively improved mainly from the mounting structure and the internal structure of the photoelectric direct-reading terminal, and the photoelectric direct-reading terminal is particularly suitable for upgrading and reconstruction of a traditional base meter, the overall structure is compact, parts are simplified, and meanwhile the metering accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water meters, in particular to a detachable photoelectric direct-reading water meter. Background Art

[0002] Photoelectric direct-reading meters, with their advantages of accurate readings, low power consumption, robustness against power outages, strong anti-interference capabilities, and long service life, have been widely used in urban water supply and other fields. They enjoy a large installed base and continue to enjoy strong market demand. However, existing photoelectric direct-reading meters still have numerous drawbacks. For example, readings are easily affected by external light sources and dust, and installation and removal are cumbersome. Problems with the photoelectric direct-reading module require breaking the seal of the base meter for maintenance, during which the base meter cannot measure data. In wet-type conventional meters, the base meter and photoelectric direct-reading module are coupled and synchronized via magnets, which are susceptible to magnetic interference. The synchronization magnets or rings are susceptible to rust and corrosion when immersed in water, affecting readings and water quality. Existing detachable photoelectric direct-reading water meters on the market require a clamp to secure the lower end of the base meter bell housing when adding the photoelectric direct-reading module. This requires threading the data cable before tightening the photoelectric module, making the operation relatively cumbersome. The photoelectric direct-reading module utilizes a complex multi-stage gear mechanism and is very tedious to install. Utility Model Content

[0003] In view of this, the utility model provides a detachable photoelectric direct-reading water meter, which aims to solve the problems of the current wet-type base meter, such as the photoelectric direct-reading water meter being susceptible to magnetic interference, the complex structure of the direct-reading module, the troublesome assembly, and the cumbersome subsequent installation operations.

[0004] To achieve the above purpose, the technical solution of this utility model is as follows:

[0005] A detachable photoelectric direct-reading water meter includes a base meter and a photoelectric direct-reading terminal. The key features are: the base meter is provided with an adapter ring and a fastener engaged with the adapter ring, the adapter ring has at least two screw hole columns, the fastener has a through hole for exposing the screw hole columns, the photoelectric direct-reading terminal is supported on the fastener and connected to the screw hole columns on the adapter ring by screws, and a mutually cooperating engagement structure is provided between the photoelectric direct-reading terminal and the fastener.

[0006] By adopting the above solution and utilizing the adapter ring structure, the photoelectric direct reading terminal can be quickly disassembled and assembled, thereby improving the efficiency of base meter modification and maintenance.

[0007] Preferably, the base meter is provided with a magnetic ring for magnetic coupling with a coupling component within the photoelectric direct-reading terminal. A through-hole housing for the magnetic ring is installed within the base meter. The housing comprises a bottom shell and a top shell, and the two shells are ultrasonically surface-welded. Using this solution, the housings for the magnetic rings in conventional water meters all employ a tight fit, resulting in poor waterproofing. Prolonged immersion can easily lead to rust and corrosion, affecting readings and water quality. In contrast, the present invention utilizes ultrasonic welding to completely seal the magnetic ring, eliminating the risk of rust and corrosion.

[0008] Preferably, a magnetic isolation ring is provided on the circumferential outer side of the corresponding coupling member in the photoelectric direct reading terminal. The above solution can effectively shield external magnetic interference and improve measurement accuracy.

[0009] Preferably, the magnetic ring is synchronized with the gear corresponding to the 100L position reading in the base meter. Compared to other similar water meters with 10L position synchronization, the magnetic ring of this solution can provide 10 times the torque of other similar water meters, is less affected by the resistance caused by magnetic coupling, and has higher accuracy.

[0010] Preferably, the photoelectric direct reading terminal includes a sealed housing and a photoelectric direct reading module disposed within the sealed housing, wherein the coupling member engages with a character wheel assembly of the photoelectric direct reading module via two transmission gears. With the above solution, the two gears and the character wheel assembly cooperate, resulting in a more streamlined and compact overall structure. Furthermore, the photoelectric direct reading module can be assembled in a modular manner, making installation more convenient and providing greater overall versatility.

[0011] Preferably, the sealed housing includes an extended bellows, through which the signal line of the photoelectric direct-reading module passes. While similar water meter installations often involve threading, which is cumbersome, this solution integrates the line and bellows directly into the photoelectric direct-reading terminal. This allows for complete installation without requiring on-site threading, requiring only wire connections.

[0012] Preferably, the fastener has a slot on its upper portion, the photoelectric direct-reading terminal has an I-shaped card that fits within the slot, and the fastener has a positioning slot on its bottom portion that mates with a rib on the base surface. This arrangement further enhances the ease of assembly and disassembly of the photoelectric direct-reading terminal, as well as product stability.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The detachable photoelectric direct-reading water meter provided by the utility model mainly focuses on the installation structure of the photoelectric direct-reading terminal and the internal structure, effectively improving the overall disassembly and assembly efficiency. It is especially suitable for upgrading and transforming traditional wet-type base meters. The overall structure is compact, the components are streamlined, and the measurement accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 Axonometric drawing;

[0017] Figure 3 This is a schematic diagram of fastener installation;

[0018] Figure 4 Schematic diagram of the adapter ring structure;

[0019] Figure 5 is a schematic diagram of the fastener structure;

[0020] Figure 6 It is the bottom structure of the fastener;

[0021] Figure 7 It is a schematic diagram of the cooperation between the fastener and the adapter ring;

[0022] Figure 8 This is a schematic diagram of the magnetic ring installation;

[0023] Figure 9 This is a schematic diagram of the photoelectric direct reading terminal structure;

[0024] Figure 10 for Figure 9 Bottom view;

[0025] Figure 11 for Figure 9 Cross-sectional view at AA in the middle;

[0026] Figure 12 This is a schematic diagram of the internal structure of the photoelectric direct reading terminal;

[0027] Figure 13 This is a schematic diagram of the coupling component and the photoelectric direct reading module;

[0028] Figure 14 for Figure 13 Axonometric view of

[0029] Figure 15 for Figure 1 sectional view of . DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0031] refer to Figure 1 and Figure 15The detachable photoelectric direct-reading water meter shown mainly includes a base meter 100 and a photoelectric direct-reading terminal 200. In this application, the base meter 100 is provided with an adapter ring 300 and a fastener 400 engaged with the adapter ring 300. The adapter ring 300 has at least two screw hole columns 310, and the fastener 400 has a through hole for exposing the screw hole columns 310. The photoelectric direct-reading terminal 200 is supported on the fastener 400 and is connected to the screw hole columns 310 on the adapter ring 300 by screws. There is a mutually cooperating engaging structure between the photoelectric direct-reading terminal 200 and the fastener 400.

[0032] Specifically, the structure of the adapter ring 300 can refer to Figure 4 , and the patent number "CN221302424U", named "Ordinary Water Meter Field Vertical Lift Non-magnetic Meter Structure", is generally a C-shaped card-mounted structure, with a notch groove 320 on the circumferential outer side, combined with Figure 15 It can be seen that during the installation process, the adapter collar 300 is engaged with the metal cover 140 on the top of the base table 100 through the notch groove 320 to achieve circumferential fixation.

[0033] The inner side of the adapter collar 300 has at least two protrusions 330 arranged along its thickness direction, and at least one wedge-shaped card groove 340. The fastener 400 mainly includes an integrally formed annular body, which has an inner ring plate 430 and an outer ring plate 440. The inner diameter of the outer ring plate 440 is adapted to the outer diameter of the metal cover 140, and the outer diameter of the inner ring plate 430 is adapted to the inner diameter of the adapter collar 300. At the same time, the inner ring plate 430 is provided with a wedge-shaped card 432 that cooperates with the wedge-shaped card groove 340, and a door-shaped opening 431 that adapts to the protrusion 330, and At the same time, the fastener 400 has a through hole 450 that is arranged in a one-to-one correspondence with the screw hole column 310, so that the axial positioning between the fastener 400 and the adapter clamp 300 can be achieved by cooperating with the door-shaped opening 431 and the protrusion 330, and the wedge-shaped card 432 and the wedge-shaped card groove 340. On the other hand, a positioning groove 420 is provided at the bottom of the fastener 400, and the positioning groove 420 is adapted to the rib plate 130 on the base table 100. The positioning groove 420 is engaged with the rib plate 130, thereby achieving circumferential positioning between the fastener 400 and the base table 100.

[0034] Taking into account some of the defects of the existing magnetic coupling structure, this embodiment makes an optimized design for the installation structure of the magnetic ring 110 and the coupling member 220. Specifically, the base meter 100 is provided with a magnetic ring 110 for magnetically coupling with the coupling member 220 in the photoelectric direct reading terminal 200. Figure 8 As shown, the magnetic ring 110 is installed in the base table 100 through the hole carrying shell 120, and the carrying shell 120 includes a bottom shell 121 and a top shell 122. The bottom shell 121 and the top shell 122 are ultrasonically surface welded, which can effectively avoid the risk of immersion corrosion.

[0035] A magnetic isolation ring 221 is provided on the circumferential outer side of the corresponding coupling member 220 in the photoelectric direct reading terminal 200 to shield external magnetic interference and ensure smooth rotation.

[0036] On the other hand, the magnetic coupling structure will produce a certain resistance to the magnetic ring 110. The greater the resistance, the greater the error that may be obtained. Therefore, in this embodiment, the magnetic ring 110 and the reading of the 100L position 150 in the base meter 100 are synchronized with the corresponding gear. In this way, the torque that the magnetic ring 110 can obtain during the rotation process is relatively larger, and the influence of the resistance generated by the magnetic coupling is relatively weakened, which is conducive to ensuring its measurement accuracy.

[0037] The photoelectric direct reading terminal 200 in this application includes a sealed housing 210 and a photoelectric direct reading module 230 disposed within the sealed housing 210. The structure of the photoelectric direct reading module 230 can be referenced in patents CN117129048A, entitled "A Method for Reading a Light-Guided Photoelectric Direct Reading Water Meter," and CN220708458U, entitled "A Light-Guided Photoelectric Direct Reading Structure." The module is primarily comprised of a circuit board and a character wheel assembly 231. In this embodiment, a coupling member 220 engages with the character wheel assembly 231 of the photoelectric direct reading module 230 via two transmission gears. As shown in the figure, a first transmission gear 222 is fixedly mounted on the rotating shaft of the coupling member 220. A second transmission gear 223 is disposed within the sealed housing 210 and engages with the first transmission gear 222. A worm gear structure 224 is disposed on the mounting shaft of the second transmission gear 223. The worm gear structure 224 engages with the character wheel teeth at the end of the character wheel assembly 231 to achieve character wheel linkage.

[0038] In addition, an extended bellows 240 is provided at the bottom of the sealed housing 210 , and the signal line of the photoelectric direct reading module 230 passes through the extended bellows 240 , which can avoid threading problems during the installation process, making it relatively simpler and more convenient.

[0039] To further improve the installation stability of the photoelectric direct reading terminal 200 , the fastener 400 has a card slot 410 on the top, the photoelectric direct reading terminal 200 has an I-shaped card 250 that cooperates with the card slot 410 , and a positioning slot 420 is provided at the bottom of the fastener 400 .

[0040] The base meter 100 in this application is an ordinary wet water meter, which can be sold as a pre-buried meter. Later, the photoelectric direct reading terminal 200 can be installed by simply using the adapter ring 300 and the fastener 400. It has good upgrade convenience, a simple and compact overall structure, and good measurement accuracy.

[0041] During installation, the adapter collar 300 and the fastener 400 are installed in sequence, and then the photoelectric direct reading terminal 200 is connected and fixed to the screw hole column 310 by screws. Usually, a meter cover is installed on the fastener 400.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. A detachable photoelectric direct-reading water meter, comprising a base meter (100) and a photoelectric direct-reading terminal (200), characterized in that: The base table (100) is provided with an adapter collar (300) and a fastener (400) engaged with the adapter collar (300); the adapter collar (300) has at least two screw hole columns (310); the fastener (400) has a through hole for exposing the screw hole columns (310); the photoelectric direct reading terminal (200) is supported on the fastener (400) and connected to the screw hole columns (310) on the adapter collar (300) by screws; and a mutually matched engaging structure is provided between the photoelectric direct reading terminal (200) and the fastener (400).

2. The detachable photoelectric direct-reading water meter according to claim 1, characterized in that: A magnetic ring (110) for magnetically coupling with a coupling member (220) in a photoelectric direct reading terminal (200) is provided in the base meter (100); a through-hole bearing shell (120) of the magnetic ring (110) is installed in the base meter (100); the bearing shell (120) comprises a bottom shell (121) and a top shell (122); and the bottom shell (121) and the top shell (122) are connected by ultrasonic surface welding.

3. The detachable photoelectric direct-reading water meter according to claim 2, characterized in that: A magnetic isolation ring (221) is provided on the circumferential outer side of the corresponding coupling member (220) in the photoelectric direct reading terminal (200).

4. The detachable photoelectric direct-reading water meter according to claim 2 or 3, characterized in that: The magnetic ring (110) is synchronized with the gear corresponding to the 100L position reading in the base meter (100).

5. The detachable photoelectric direct-reading water meter according to claim 2 or 3, characterized in that: The photoelectric direct reading terminal (200) comprises a sealed housing (210) and a photoelectric direct reading module (230) arranged in the sealed housing (210); the coupling member (220) is engaged with a character wheel assembly of the photoelectric direct reading module (230) via two transmission gears.

6. The detachable photoelectric direct-reading water meter according to claim 5, characterized in that: The sealed housing (210) has an extended bellows (240), and the signal line of the photoelectric direct reading module (230) passes through the extended bellows (240).

7. The detachable photoelectric direct-reading water meter according to any one of claims 1 to 3, characterized in that: The fastener (400) has a card slot (410) on its upper portion, the photoelectric direct reading terminal (200) has an I-shaped card (250) that matches the card slot (410), and the bottom of the fastener (400) is provided with a positioning slot (420), which is adapted to the rib plate (130) on the base surface (100).

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