A water supply circulation system for water meter calibration

Abstract

The present application relates to a water supply circulation system for water meter calibration, which relates to the field of water supply circulation energy saving for water meter calibration, including a weighing bucket, a weighing module, a water storage tank, a water supply module, a flow regulation module, and a water inlet pipe and a water outlet pipe connected to a water meter calibration device. The water inlet pipe supplies water to the water meter in the water meter calibration device, and the water flowing through the water meter in the water meter calibration device flows out through the water outlet pipe. The flow regulation module is arranged on the water outlet pipe, and regulates the water outlet of the water outlet pipe to flow into the weighing bucket along a first flow path or into the water storage tank along a second flow path. The weighing bucket is arranged on the weighing module and is connected to the water storage tank through a valve-pipe. The weighing module can weigh the weighing bucket, and the water supply module is connected to the water storage tank and the water inlet pipe. The present application firstly effectively avoids the influence of the water used for sealing test on the weighing of the calibration water, thereby improving the accuracy of water meter calibration, and secondly realizes the circulating supply of water for water meter calibration, reduces water resource waste, and improves water resource utilization.

Description

Technical Field

[0001] The present application relates to the field of water supply circulation energy saving for water meter calibration, and in particular to a water supply circulation system for water meter calibration. Background Art

[0002] During the production process of water meters, in order to ensure accurate measurement, durable sealing, and compliance with regulatory standards, water meters need to be calibrated. By calibrating flow, testing sealing and corrosion resistance, individual errors can be eliminated, the meter can adapt to complex working conditions, and comply with international certification and domestic calibration regulations.

[0003] In the prior art, invention publication number CN113008340A discloses a fully automatic water meter calibration device based on machine vision and a weighing method. In the prior art, the second ball valve on each water supply branch is opened in sequence, and the water flows into the weighing bucket through the first outlet pipe, the second outlet pipe, and the third outlet pipe. The second solenoid valve on the second downpipe is opened, and the siphon effect causes the water in the weighing bucket to pass through the first downpipe, the fourth three-way valve, and the second downpipe into the water tank, thereby playing the role of water circulation. When calibrating a water meter, it is necessary to first perform a sealing test on the water meter. After the sealing test is completed, the sealing test water needs to be discharged. If the prior art calibration device is used, the test water needs to be discharged into the weighing bucket, which will cause errors in the weighing of the water in the weighing bucket during the subsequent water meter calibration, thereby reducing the accuracy of the water meter calibration. Summary of the Invention

[0004] In order to improve the problem that test water needs to be discharged into a weighing bucket, which leads to a decrease in the accuracy of water meter calibration, the present application provides a water supply circulation system for water meter calibration.

[0005] The water supply circulation system for water meter calibration provided in this application adopts the following technical solutions:

[0006] A water supply circulation system for water meter calibration includes a weighing bucket, a weighing module, a water storage tank, a water supply module, a flow regulation module, and a water inlet pipe and a water outlet pipe connected to the water meter calibration device. The water inlet pipe can supply water to the water meter in the water meter calibration device, and the water flowing through the water meter in the water meter calibration device flows out through the water outlet pipe. The flow regulation module is arranged on the water outlet pipe to be able to regulate the water outlet of the water outlet pipe to flow into the weighing bucket along a first flow path or along a second flow path into the water storage tank. The weighing bucket is arranged on the weighing module and is connected to the water storage tank through a valve-pipe so that the water in the weighing bucket can be discharged to the water storage tank. The weighing module can weigh the weighing bucket. The water supply module is connected to the water storage tank and the water inlet pipe to be able to transport the water in the water storage tank to the water inlet pipe.

[0007] By adopting the above technical solution, before the water meter is calibrated, the water for the water meter's sealing test flows from the water meter calibration device to the water outlet pipe, and then the flow path regulating module adjusts the sealing test water to flow into the water storage tank along the second flow path. When the water meter is calibrated, the calibration water flows to the water outlet pipe, and then flows into the weighing bucket along the first flow path through the flow path regulating module. The weighing module weighs the calibration water in the weighing bucket, and after weighing, the water in the weighing bucket is discharged into the water storage tank. When the water meter needs to be calibrated again, the water supply module transports the water in the water storage tank to the water inlet pipe to supply water for the calibration of the water meter, thereby realizing a circulating water supply for the water meter calibration. The technical solution of the present application adjusts the different flow paths of the water out of the water outlet pipe by the flow path regulating module, separates the sealing test water from the calibration water, and enables the weighing module to weigh only the calibration water, effectively avoiding the influence of the sealing test water on the weighing of the calibration water, thereby improving the accuracy of the water meter calibration. At the same time, the technical solution of the present application can also realize the circular supply of water used for water meter calibration, thereby reducing the waste of water resources and improving the utilization rate of water resources.

[0008] Preferably, the flow path regulation module includes a guide pipe and a driving member, the guide pipe is rotatably connected to the frame and is connected to the water outlet pipe through an intermediate hose, the driving member is connected to the guide pipe, and the driving member can drive the guide pipe to rotate so that the water outlet from the guide pipe can be regulated on the first flow path and the second flow path.

[0009] By adopting the above technical solution, the driving member is used to drive the guide pipe in different directions, so as to adjust the different flow paths of the water outlet pipe, thereby improving the convenience and accuracy of adjusting the flow path of the water outlet pipe.

[0010] Preferably, a first guide cylinder and a second guide cylinder are provided on the frame, wherein a first flow path is formed in the first guide cylinder and is communicated with the weighing bucket, and a second flow path is formed in the second guide cylinder and is connected to the water tank;

[0011] The driving member can drive the guide tube to be in communication with the first guide tube, or to be in communication with the second guide tube.

[0012] By adopting the above technical solution, the first guide tube and the second guide tube guide the water in the first flow path and the second flow path, thereby improving the stability of the water flowing along the first flow path and the second flow path.

[0013] Preferably, the frame is provided with an adjusting member located between the guide tube and the first guide cylinder and the second guide cylinder, and the outer sides of both ends of the adjusting member respectively form a first water outlet space and a second water outlet space. The guide tube can be opposite to the first water outlet space so as to be able to inject water into the first guide cylinder, and the guide tube can be opposite to the second water outlet space so as to be able to inject water into the second guide cylinder. The upper surface of the adjusting member is an arc-shaped surface that is slidably sealed with the end of the guide tube.

[0014] By adopting the above technical solution, when the guide pipe is draining water, when the guide pipe is opposite to the first water outlet space, it can drain water into the first guide cylinder, and when the guide pipe is opposite to the second water outlet space, it can drain water into the second guide cylinder. When the calibration is completed, it is necessary to stop the calibration water from flowing into the weighing bucket. At this time, when the guide pipe rotates from the first water outlet space to the second water outlet space, the adjusting part can rely on the sliding sealing connection between the arc surface and the guide pipe to accelerate the sealing of the water outlet of the guide pipe, thereby shortening the response time of the guide pipe, making the calibration water in the weighing bucket closer to the actual situation, and improving the accuracy of water meter calibration.

[0015] Preferably, the adjusting member includes an upper sliding arc plate and a lower sliding branch plate, the upper sliding arc plate is slidably connected to the guide tube, the lower sliding branch plate is arranged on the first guide cylinder and the second guide cylinder, the upper sliding arc plate is provided with a water diversion groove, the water diversion groove is located between the first water outlet space and the second water outlet space, the water diversion groove can be opposite to the guide tube to receive the water outlet of the guide tube, the lower sliding branch plate is slidably and sealingly connected to the upper sliding arc plate, the lower sliding arc plate is provided with a first water drop outlet and a second water drop outlet, the first water drop outlet is located above the first guide cylinder, and the second water drop outlet is located above the second guide cylinder, and the frame is provided with a driving mechanism;

[0016] The driving mechanism can drive the first downspout to communicate with the water diversion trough so that the water in the water diversion trough can flow into the first guide tube, and drive the second downspout to communicate with the water diversion trough so that the water in the water diversion trough can flow into the second guide tube.

[0017] By adopting the above technical solution, when calibrating the water meter, the guide pipe needs to be rotated to the first water outlet space. During this process, the driving mechanism drives the lower sliding support plate to slide, so that the first water outlet is connected to the water diversion trough. When the water outlet of the guide pipe is separated from the second water outlet space and slides onto the sliding arc plate, it is connected to the water diversion trough, so that the water outlet of the guide pipe flows along the water diversion trough and the first water outlet into the first guide cylinder, so that the calibration water flows into the weighing bucket more promptly. When the water meter calibration is completed, the driving mechanism drives the lower sliding support plate to slide, so that the second water outlet is connected to the water diversion trough. When the water outlet of the guide pipe is separated from the first water outlet space and slides onto the sliding arc plate, it is connected to the water diversion trough, so that the water outlet of the guide pipe flows along the water diversion trough and the second water outlet into the second guide cylinder, so that the calibration water flows into the water storage tank more promptly, so that the calibration water in the weighing bucket is closer to the actual situation, thereby improving the accuracy of water meter calibration.

[0018] Preferably, both ends of the water diversion groove are isolated from the first water outlet space and the second water outlet space by blocking parts, so as to limit the flow of water between the water diversion groove and the first water outlet space and the second water outlet space.

[0019] By adopting the above technical solution, the water diversion groove is isolated from the first water outlet space and the second water outlet space by the barrier part, thereby ensuring the stability of water flow in the water diversion groove and allowing water to flow into the corresponding guide cylinder more accurately.

[0020] Preferably, the guide tube is connected to the upper sliding arc plate via a transmission member, so that the guide tube can drive the upper sliding arc plate to slide in the opposite direction.

[0021] By adopting the above technical solution, when the water outlet of the guide pipe leaves the first water outlet space or the second water outlet space and slides onto the upper sliding arc plate, the guide pipe drives the upper sliding arc plate to slide in the opposite direction through the transmission member, thereby accelerating the water outlet of the guide pipe to slide onto the upper sliding arc plate, shortening the control response time of the water outlet flow path of the guide pipe, further improving the accuracy of the water consumption calibration in the weighing bucket, and improving the accuracy of the water meter calibration.

[0022] Preferably, the transmission member includes a first gear ring segment, a steering gear and a second gear ring segment, the first gear ring segment is fixedly connected to the guide tube, the second gear ring segment is fixedly connected to the upper sliding arc plate, the first gear ring segment and the second gear ring segment are concentrically arranged, the steering gear is rotatably connected to the frame and is located between the first gear ring segment and the second gear ring segment, the steering gear is externally meshed with the gear teeth on the first gear ring segment and internally meshed with the gear teeth on the second gear ring segment, so that the first gear ring segment and the second gear ring segment rotate in opposite directions.

[0023] By adopting the above technical solution, the first gear ring segment is engaged with the external meshing of the steering gear, and the second gear ring segment is engaged with the internal meshing of the steering gear, so as to realize the reverse movement of the upper sliding arc plate and the guide tube, and improve the transmission accuracy between the guide tube and the upper sliding arc plate through the gear transmission.

[0024] Preferably, the water supply module includes a water pump and a pressure buffer tank. The water pump is connected in series on a pipeline between the pressure buffer tank and the water storage tank. The pressure buffer tank is connected to the water inlet pipe.

[0025] By adopting the above technical solution, a water pump is used to transport the water in the water tank to the pressure buffer tank, and then from the pressure buffer tank to the water inlet pipe, thereby realizing a circulating supply of water for calibration.

[0026] Preferably, the water pump is connected to the water tank through a filter.

[0027] By adopting the above technical solution, impurities in water are filtered using a filter, the influence of impurities on water meter calibration is reduced, and the accuracy of water meter calibration is improved.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The flow path adjustment module adjusts the different flow paths of the water flowing out of the water outlet pipe to separate the water for sealing test and the water for verification. This allows the weighing module to weigh only the water for verification, effectively preventing the influence of the water for sealing test on the weighing of the water for verification, thereby improving the accuracy of water meter verification. At the same time, the technical solution of this application can also realize the recycling supply of water for water meter verification, thereby reducing water resource waste and improving water resource utilization.

[0030] 2. When the water outlet of the guide pipe is separated from the second water outlet space and slides onto the sliding arc plate, it is connected to the water diversion groove, so that the water outlet of the guide pipe flows along the water diversion groove and the first water outlet into the first guide cylinder, so that the calibration water flows into the weighing bucket more promptly; when the water outlet of the guide pipe is separated from the first water outlet space and slides onto the sliding arc plate, it is connected to the water diversion groove, so that the water outlet of the guide pipe flows along the water diversion groove and the second water outlet into the second guide cylinder, so that the calibration water flows into the water storage tank more promptly, making the calibration water in the weighing bucket closer to the actual situation, thereby improving the accuracy of water meter calibration;

[0031] 3. The guide pipe drives the upper sliding arc plate to slide in the opposite direction through the transmission member, accelerating the sliding of the water outlet of the guide pipe onto the upper sliding arc plate, shortening the control response time of the water flow path of the guide pipe, further improving the accuracy of the water consumption verification in the weighing bucket, and improving the accuracy of the water meter verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a structural diagram of a water supply circulation system for water meter calibration in an embodiment of the present application.

[0033] Figure 2 It is a structural diagram used to show the flow regulation module.

[0034] Figure 3 It is a schematic diagram used to show the structure of the driving components.

[0035] Figure 4 yes Figure 3 A top view of the structure is shown in FIG.

[0036] Figure 5 It is along Figure 4 Sectional view along line AA.

[0037] Figure 6 It is along Figure 4 Cross-sectional view along line BB.

[0038] Figure 7 It is a schematic diagram used to show the structure of transmission parts.

[0039] Figure 8 yes Figure 6 Enlarged view of part C in the middle.

[0040] Explanation of reference numerals: 1. weighing bucket; 2. weighing module; 3. water storage tank; 4. water supply module; 41. water pump; 42. pressure buffer tank; 43. filter; 5. flow path adjustment module; 51. guide pipe; 52. driving member; 531. first guide cylinder; 532. second guide cylinder; 533. water guide cylinder; 54. intermediate hose; 55. adjusting member; 551. upper sliding arc plate; 552. lower sliding support plate; 5521. first water outlet; 5522. second water outlet; 553. driving mechanism Structure; 5531, linear cylinder; 554, first water diversion frame; 555, second water diversion frame; 5541, first water outlet space; 5551, second water outlet space; 556, water diversion trough; 557, barrier part; 558, transmission part; 5581, first ring gear segment; 5582, steering gear; 5583, second ring gear segment; 5584, sliding frame; 5585, guide groove; 5586, guide part; 5587, connecting plate; 6, water meter calibration device; 61, water inlet pipe; 62, water outlet pipe. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-8 This application is described in further detail.

[0042] The embodiments of the present application disclose a water supply circulation system for water meter calibration.

[0043] Reference Figure 1 、 Figure 2A water supply circulation system for water meter calibration includes a weighing bucket 1, a weighing module 2, a water storage tank 3, a water supply module 4, a flow path regulating module 5, and a water inlet pipe 61 and a water outlet pipe 62 connected to a water meter calibration device 6. The weighing module 2 in this embodiment is a weighing scale, and the weighing bucket 1 is placed on the weighing scale. The water meter to be inspected is installed in series on the flow path of the water meter calibration device 6. The flow meter in the water meter calibration device 6 then measures the amount of water in the flow path. Finally, the water in the flow path of the water meter calibration device 6 flows into the weighing bucket 1, and the weighing scale weighs the amount of water in the weighing bucket 1. The specific calibration process is as follows: within a time period t, the volume of water passing through the water meter to be inspected is V1. The volume of water passing through the water meter within the time period t is measured by the flow meter as V2. The weight of the water entering the weighing bucket 1 within the time period t is measured by the weighing module 2. The weight of the water is then converted into a volume V3 using density. The values of V1, V2, and V3 are compared to determine whether the water meter to be inspected is qualified.

[0044] Reference Figure 1 、 Figure 2 The water inlet pipe 61 supplies water to the flow path within the water meter calibration device 6. The flow path of the flow meter converges in the outlet pipe 62. The flow path regulation module 5 is located at the outlet end of the outlet pipe 62. The water from the outlet pipe 62 has two flow paths: a first flow path into the weighing bucket 1 and a second flow path into the water storage tank 3. The flow path regulation module 5 can adjust the water flow from the outlet pipe 62 between the first and second flow paths. The weighing bucket 1 is connected to the water storage tank 3 via a valve-pipe assembly. After the water in the weighing bucket 1 is weighed, the valve is opened, and the water in the weighing bucket 1 flows along the pipe into the water storage tank 3. The water supply module 4 includes a water pump 41 and a pressure buffer tank 42. There are two water pumps 41, connected in parallel and in series in the pipeline between the water storage tank 3 and the pressure buffer tank 42. One water pump 41 is in regular use and the other is in standby mode to ensure a stable water supply. The pressure buffer tank 42 is connected to the water inlet pipe 61 via a pipe. The water pump 41 draws water from the water storage tank 3 and delivers it to the pressure buffer tank 42. The water in the pressure buffer tank 42 flows along the pipe into the water inlet pipe 61, achieving a circulating supply of water for water meter measurement, thereby reducing water waste and saving water resources. The water pump 41 is connected to the water storage tank 3 via a filter 43. The filter 43 is a membrane filter. The filter 43 is connected to the pipe at the outlet end of the water pump 41 via a pipe, and the filter 43 is also connected to the water storage tank 3 via a pipe. The water delivered to the pressure buffer tank 42 by the water pump 41 is diverted through the pipe where the filter 43 is located and flows back into the water storage tank 3. The diverted water is filtered by the filter 43, reducing the impact of impurities on water meter calibration and improving the accuracy of water meter calibration.

[0045] Before a water meter is calibrated, water for a tightness test flows from the water meter calibration device 6 to the outlet pipe 62. The flow path adjustment module 5 then adjusts the tightness test water along a second flow path into the water storage tank 3. During the water meter calibration, the test water flows to the outlet pipe 62 and then flows through the flow path adjustment module 5 along a first flow path into the weighing bucket 1. The weighing module 2 weighs the test water in the weighing bucket 1 and, after weighing, discharges the water in the weighing bucket 1 into the water storage tank 3. When the water meter needs to be calibrated again, the water supply module 4 transfers the water in the water storage tank 3 to the inlet pipe 61 to supply water for the water meter calibration, thereby achieving a circulating water supply for water meter calibration. By adjusting the different flow paths of the water flowing out of the outlet pipe 62 by the flow path adjustment module 5, the tightness test water and the calibration water are separated, allowing the weighing module 2 to weigh only the calibration water, effectively preventing the influence of the tightness test water on the calibration water weighing, thereby improving the accuracy of water meter calibration.

[0046] Reference Figure 2 、 Figure 3 The flow path regulation module 5 includes a guide tube 51 and a drive member 52. A first guide tube 531 and a second guide tube 532 are mounted on the frame. A water guide tube 533 is integrally formed at the top of each of the first and second guide tubes 531, 532. The bottom outlet of the first guide tube 531 is located above the weighing bucket 1, and a first flow path is formed within the first guide tube 531, allowing the test water to flow into the weighing bucket 1 along the first flow path. The outlet of the second guide tube 532 is connected to the water tank 3, and a second flow path is formed within the second guide tube 532, allowing the seal test water to flow into the water tank 3 along the second flow path.

[0047] Reference Figure 3 、 Figure 4 The guide tube 51 is rotatably connected to the water guide tube 533 through a rotating shaft. The rotation plane of the guide tube 51 passes through the first guide tube 531 and the second guide tube 532. The driving member 52 includes a cylinder. The cylinder body of the cylinder is hinged to the frame body, and the piston rod of the cylinder is hinged to the guide tube 51. The guide tube 51 is driven to swing by the cylinder, so that the water outlet of the guide tube 51 can be directed toward the first guide tube 531, so that water flows into the first guide tube 531, and can also be directed toward the second guide tube 532, so that water flows into the second guide tube 532. The guide tube 51 is connected to the water outlet pipe 62 through the intermediate hose 54 to adapt to the rotation of the guide tube 51.

[0048] By using a cylinder to drive the guide tube 51 in different directions, the different flow paths of the water flowing out of the water outlet pipe 62 can be adjusted, improving the convenience and accuracy of adjusting the flow path of the water outlet pipe 62. The first guide cylinder 531 and the second guide cylinder 532 guide the water flowing out of the guide tube 51 in the first flow path and the second flow path, thereby improving the stability of the water flow along the first flow path and the second flow path.

[0049] Reference Figure 4 、 Figure 5 An adjusting member 55 is provided on the frame, and the adjusting member 55 is located between the guide tube 51 and the first guide tube 531 and the second guide tube 532. The adjusting member 55 in this embodiment includes an upper sliding arc plate 551 and a lower sliding support plate 552. The lower sliding support plate 552 is slidingly connected to the water guide tube 533, and the lower sliding support plate 552 is slidingly and sealingly connected to the connection between the first guide tube 531 and the second guide tube 532.

[0050] Reference Figure 4 、 Figure 6 The lower sliding support plate 552 is an arc-shaped plate structure whose center is concentric with the rotation axis of the guide tube 51. The width of the lower sliding support plate 552 is smaller than the width of the first and second guide tubes 531, 532 in that direction, leaving space between both sides of the lower sliding support plate 552 and the water guide tube 533. A drive mechanism 553 is fixed to the water guide tube 533. In this embodiment, the drive mechanism 553 is a linear cylinder 5531. The piston rod of the linear cylinder 5531 passes through the water guide tube 533 and is fixedly connected to the lower sliding support plate 552, driving the lower sliding support plate 552 to slide back and forth along its width.

[0051] Reference Figure 5 、 Figure 6 and Figure 7The center of the upper sliding arc plate 551 is concentric with the rotational axis of the guide tube 51. The upper sliding arc plate 551 is slidably mounted on the lower sliding support plate 552 and slides in contact with the lower sliding support plate 552, forming a sliding, sealed connection between the upper sliding arc plate 551 and the lower sliding support plate 552. The upper surface of the upper sliding arc plate 551 is an arc-shaped surface that slidably seals against the end of the guide tube 51. A first water diversion frame 554 and a second water diversion frame 555 are respectively provided at each end of the upper sliding arc plate 551. The first water diversion frame 554 and the second water diversion frame 555 are both slidably, sealedly connected to the lower sliding support plate 552. The openings of the first water diversion frame 554 and the second water diversion frame 555 are both oriented toward the side of the lower sliding support plate 552. The width of the first water diversion frame 554 and the second water diversion frame 555 along the width of the lower sliding support plate 552 is twice that of the upper sliding arc plate 551. A first water outlet space 5541 is formed inside the first water diversion frame 554, and a second water outlet space 5551 is formed inside the second water diversion frame 555. When the water outlet of the guide pipe 51 is opposite to the first water outlet space 5541, the water outlet of the guide pipe 51 can flow into the first guide tube 531 along the first water outlet space 5541. When the water outlet of the guide pipe 51 is opposite to the second water outlet space 5551, the water outlet of the guide pipe 51 flows into the second guide tube 532 along the second water outlet space 5551.

[0052] Reference Figure 5 、 Figure 7 A water diversion groove 556 is provided on the upper sliding arc plate 551, and the water diversion groove 556 is arranged along the circumference of the upper sliding arc plate 551. The water diversion groove 556 runs through the upper and lower surfaces of the upper sliding arc plate 551. The two ends of the water diversion groove 556 are respectively isolated from the first water outlet space 5541 and the second water outlet space 5551 by the blocking part 557, thereby limiting the flow of water between the water diversion groove 556 and the first water outlet space 5541 and the second water outlet space 5551. When the end of the guide pipe 51 slides onto the upper sliding arc plate 551 from the first water outlet space 5541 or the second water outlet space 5551, the water diversion groove 556 can be opposite to the guide pipe 51 and can receive the water outlet of the guide pipe 51. A first water outlet 5521 and a second water outlet 5522 are provided on the lower sliding support plate 552. The first water outlet 5521 is located above the first guide cylinder 531, and the second water outlet 5522 is located above the second guide cylinder 532. The linear cylinder 5531 drives the lower sliding support plate 552 to slide along its own width direction, so that the first water outlet 5521 or the second water outlet 5522 is connected to the water diversion groove 556. When the first water outlet 5521 is connected to the water diversion groove 556, the water in the water diversion groove 556 enters the first guide cylinder 531 along the first water outlet 5521. When the second water outlet 5522 is connected to the water diversion groove 556, the water in the water diversion groove 556 enters the second guide cylinder 532 along the second water outlet 5522.

[0053] Before calibrating the water meter, water needs to be introduced into the water meter pipeline and pressurized to detect the sealing of the water meter. After the measurement is completed, the cylinder drives the guide tube 51 toward the second water outlet space 5551, and then opens the corresponding valve and water pump 41 to discharge the sealing test water in the pipeline directly into the second guide tube 532, and then discharge it into the water tank 3 along the second guide tube 532.

[0054] When the water meter needs to be calibrated, the linear cylinder 5531 drives the water diversion groove 556 to connect with the first water outlet 5521. At this moment, the cylinder drives the guide tube 51 to rotate toward the first water outlet space 5541. When the water outlet of the guide tube 51 is separated from the second water outlet space 5551 and slides onto the sliding arc plate 551, it is connected with the water diversion groove 556, so that the water outlet of the guide tube 51 flows into the first guide tube 531 along the water diversion groove 556 and the first water outlet 5521, so that the calibration water can flow into the weighing bucket 1 more promptly.

[0055] When the water meter calibration is completed, the linear cylinder 5531 drives the second drain outlet 5522 to connect with the water diversion groove 556. At this moment, the cylinder drives the guide tube 51 to rotate toward the second water outlet space 5551. The water outlet of the guide tube 51 is separated from the first water outlet space 5541 and slides onto the sliding arc plate 551, and is connected with the water diversion groove 556, so that the water outlet of the guide tube 51 flows into the second guide cylinder 532 along the water diversion groove 556 and the second drain outlet 5522, so that the calibration water flows into the water storage tank 3 more promptly, and the calibration water in the weighing bucket 1 is closer to the actual situation, thereby improving the accuracy of the water meter calibration.

[0056] Reference Figure 7 、 Figure 8 The guide tube 51 and the upper sliding arc plate 551 are connected by a transmission member 558, so that the guide tube 51 can drive the upper sliding arc plate 551 to slide in the opposite direction. The transmission member 558 in this embodiment includes a first gear ring segment 5581, a steering gear 5582 and a second gear ring segment 5583. The first gear ring segment 5581, the second gear ring segment 5583, the upper sliding arc plate 551 and the lower sliding support plate 552 are coaxially arranged. The steering gear 5582 is connected to the water guide tube 53 through a gear shaft. The first gear ring segment 5581 is fixedly connected to the guide tube 51 via the connecting plate 5587, and the second gear ring segment 5583 is fixedly connected to the upper sliding arc plate 551. The steering gear 5582 is located between the first gear ring segment 5581 and the second gear ring segment 5583. The steering gear 5582 meshes externally with the gear teeth on the first gear ring segment 5581 and internally with the gear teeth on the second gear ring segment 5583, so that the first gear ring segment 5581 and the second gear ring segment 5583 rotate in opposite directions.

[0057] Reference Figure 7 、 Figure 8A sliding frame 5584 is fixed on the frame body, and the sliding frame 5584 is arranged along the circumference of the second gear ring segment 5583. The sliding frame 5584 is provided with a guide groove 5585 arranged along its own circumference. The second gear ring segment 5583 is provided with a guide portion 5586 sliding in the guide groove 5585. The guide portion 5586 and the guide groove 5585 are arranged with a T-slot and T-portion structure, so that the upper sliding arc plate 551 slides more stably on the lower sliding support plate 552.

[0058] When the water outlet of the guide tube 51 leaves the first water outlet space 5541 or the second water outlet space 5551 and slides onto the upper sliding arc plate 551, the guide tube 51 drives the upper sliding arc plate 551 to slide in the opposite direction via the first gear ring segment 5581, the steering gear 5582, and the second gear ring segment 5583. This accelerates the sliding of the water outlet of the guide tube 51 onto the upper sliding arc plate 551, shortens the control response time of the water flow path of the guide tube 51, further improves the accuracy of water consumption verification in the weighing bucket 1, and improves the accuracy of water meter verification. The first gear ring segment 5581 is externally meshed with the steering gear 5582, and the second gear ring segment 5583 is internally meshed with the steering gear 5582, to achieve the reverse movement of the upper sliding arc plate 551 and the guide tube 51. Through gear transmission, the accuracy of the transmission between the guide tube 51 and the upper sliding arc plate 551 is improved.

[0059] The implementation principle of a water supply circulation system for water meter calibration in an embodiment of the present application is as follows: before the water meter is calibrated, the cylinder drives the guide pipe 51 toward the second water outlet space 5551, and the water used for the water meter sealing test flows from the water meter calibration device 6 to the water outlet pipe 62, and then flows into the water storage tank 3 along the second flow path through the guide pipe 51. When the water meter is calibrated, the cylinder drives the guide pipe 51 toward the first water outlet space 5541, and the calibration water flows to the water outlet pipe 62, and then flows into the weighing bucket 1 along the first flow path through the guide pipe 51. The weighing module 2 weighs the calibration water in the weighing bucket 1, and after weighing is completed, the water in the weighing bucket 1 is discharged into the water storage tank 3. When the water meter needs to be calibrated again, the water supply module 4 transports the water in the water storage tank 3 to the water inlet pipe 61 to supply water for the calibration of the water meter, thereby realizing the circulating water supply for the water meter calibration. By adjusting the different flow paths of the water out of the outlet pipe 62 through the flow path regulation module 5, the water for sealing test and the water for calibration are separated, so that the weighing module 2 only weighs the calibration water, effectively avoiding the influence of the sealing test water on the weighing of the calibration water, thereby improving the accuracy of water meter calibration.

[0060] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A water supply circulation system for water meter calibration, characterized by: The invention comprises a weighing bucket (1), a weighing module (2), a water storage tank (3), a water supply module (4), a flow path regulating module (5), and a water inlet pipe (61) and a water outlet pipe (62) connected to a water meter calibration device (6). The water inlet pipe (61) can supply water to a water meter in the water meter calibration device (6). Water flowing through the water meter in the water meter calibration device (6) flows out through the water outlet pipe (62). The flow path regulating module (5) is arranged on the water outlet pipe (62) to regulate the water outlet of the water outlet pipe (62) to flow into the water meter along a first flow path. The weighing bucket (1) or flows into the water storage tank (3) along the second flow path. The weighing bucket (1) is arranged on the weighing module (2) and is connected to the water storage tank (3) through a valve-pipeline so that the water in the weighing bucket (1) can be discharged into the water storage tank (3). The weighing module (2) can weigh the weighing bucket (1). The water supply module (4) is connected to the water storage tank (3) and the water inlet pipe (61) so as to be able to transport the water in the water storage tank (3) to the water inlet pipe (61); The flow path regulating module (5) comprises a guide pipe (51) and a driving member (52); the guide pipe (51) is rotatably connected to the frame and is connected to the water outlet pipe (62) via an intermediate hose (54); the driving member (52) is connected to the guide pipe (51); the driving member (52) is capable of driving the guide pipe (51) to rotate, so as to adjust the water outlet of the guide pipe (51) on the first flow path and the second flow path; A first guide cylinder (531) and a second guide cylinder (532) are provided on the frame. A first flow path is formed in the first guide cylinder (531) and is capable of communicating with the weighing bucket (1). A second flow path is formed in the second guide cylinder (532) and is connected to the water storage tank (3). The driving member (52) is capable of driving the guide tube (51) to be in communication with the first guide tube (531) or the second guide tube (532); The frame is provided with an adjusting member (55) located between the guide tube (51) and the first guide tube (531) and the second guide tube (532); the outer sides of the two ends of the adjusting member (55) respectively form a first water outlet space (5541) and a second water outlet space (5551); the guide tube (51) can be opposite to the first water outlet space (5541) so as to be able to inject water into the first guide tube (531); the guide tube (51) can be opposite to the second water outlet space (5551) so as to be able to inject water into the second guide tube (532); the upper surface of the adjusting member (55) is an arcuate surface that is slidably sealed with the end of the guide tube (51); The adjusting member (55) includes an upper sliding arc plate (551) and a lower sliding support plate (552), wherein the upper sliding arc plate (551) is slidably connected to the guide tube (51), and the lower sliding support plate (552) is arranged on the first guide cylinder (531) and the second guide cylinder (532), and a water guide groove (556) is provided on the upper sliding arc plate (551), and the water guide groove (556) is located between the first water outlet space (5541) and the second water outlet space (5551). ) can be opposite to the guide pipe (51) so as to receive the water outflow of the guide pipe (51); the lower sliding support plate (552) is slidingly and sealingly connected to the upper sliding arc plate (551); a first water drop outlet (5521) and a second water drop outlet (5522) are provided on the lower sliding arc plate; the first water drop outlet (5521) is located above the first guide tube (531); the second water drop outlet (5522) is located above the second guide tube (532); and a driving mechanism (553) is provided on the frame; The driving mechanism (553) is capable of driving the first water outlet (5521) to communicate with the water diversion trough (556) so that the water in the water diversion trough (556) can flow into the first guide tube (531), and driving the second water outlet (5522) to communicate with the water diversion trough (556) so that the water in the water diversion trough (556) can flow into the second guide tube (532).

2. The water supply circulation system for water meter calibration according to claim 1, characterized in that: Both ends of the water diversion trough (556) are isolated from the first water outlet space (5541) and the second water outlet space (5551) by a blocking portion (557), so as to limit the flow of water between the water diversion trough (556) and the first water outlet space (5541) and the second water outlet space (5551).

3. The water supply circulation system for water meter calibration according to claim 2, characterized in that: The guide tube (51) and the upper sliding arc plate (551) are connected via a transmission member (558), so that the guide tube (51) can drive the upper sliding arc plate (551) to slide in the opposite direction.

4. The water supply circulation system for water meter calibration according to claim 3, characterized in that: The transmission member (558) includes a first gear ring segment (5581), a steering gear (5582) and a second gear ring segment (5583), the first gear ring segment (5581) is fixedly connected to the guide tube (51), the second gear ring segment (5583) is fixedly connected to the upper sliding arc plate (551), the first gear ring segment (5581) and the second gear ring segment (5583) are concentrically arranged, the steering gear (5582) is rotatably connected to the frame and is located between the first gear ring segment (5581) and the second gear ring segment (5583), the steering gear (5582) is externally meshed with the gear teeth on the first gear ring segment (5581) and internally meshed with the gear teeth on the second gear ring segment (5583), so that the first gear ring segment (5581) and the second gear ring segment (5583) rotate in opposite directions.

5. The water supply circulation system for water meter calibration according to claim 3, characterized in that: The water supply module (4) comprises a water pump (41) and a pressure buffer tank (42); the water pump (41) is connected in series to the pipeline between the pressure buffer tank (42) and the water storage tank (3); and the pressure buffer tank (42) is connected to the water inlet pipe (61).

6. The water supply circulation system for water meter calibration according to claim 5, characterized in that: The water pump (41) is connected to the water storage tank (3) via a filter (43).

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