An automatic detection device based on water meter

Abstract

The application discloses a kind of based on water meter automatic detection device, belong to water meter detection technical field, including water tank, be located in the inside of water tank and be provided with drain plate, be located in the side of water tank and be close to the upper and lower two end parts and be provided with water meter connecting pipe one and water meter connecting pipe two being connected with the internal chamber of water tank respectively, be located in the other side of water tank and be close to the upper and lower two end parts and be provided with reflux pipe one and reflux pipe two being connected with the internal chamber of water tank respectively, water meter connecting pipe one and water meter connecting pipe two are connected with the water inlet and outlet of the two ends of water meter to be detected respectively by drainage pipe, the outside port of reflux pipe one and reflux pipe two is connected by a reflux pipe and forms intercommunication state, be located in the rear side of water tank and be provided with adjusting frame, be located in adjusting frame and be provided with multiple closed pieces that can control water meter connecting pipe one, water meter connecting pipe two, reflux pipe one and reflux pipe two inside flow and closed state, be located in one end of water tank and be provided with driver that can control adjusting frame and drain plate and carry out lifting, the device is formed complete airtight water circulation loop by water tank, water meter connecting pipe, reflux pipe, reciprocating lifting is driven by driver to drain plate, automatically complete water injection detection, water body reflux whole process, whole process does not need manual transport water body, saves manual operation step.In use process, without midway stoppage of work and refill, backwater, adapt water meter on-line detection, can effectively reduce water resource consumption, reduce detection water cost, with green energy-saving advantage.

Description

Technical Field

[0001] This invention relates to the field of water meter testing technology, and in particular to an automatic water meter testing device. Background Technology

[0002] In existing water meter testing equipment, water from a tank is typically injected into the meter under test. After receiving the water, it drains from the outlet and flows into a separate collection device. Testing personnel verify whether the water volume displayed on the meter meets the standards based on the volume of water injected in a single cycle. However, this system has significant shortcomings: the water discharged from the meter cannot be directly recycled within the system. Manual intervention or additional equipment is required to collect the discharged water and return it to the tank before subsequent testing can proceed. This non-recycling operation leads to inefficiency, requiring operators to repeatedly handle the returned water, increasing complexity and causing unnecessary water waste. Furthermore, the need to interrupt the process for re-injection after each test limits the continuity of testing, potentially affecting the stability and reliability of the meter readings. Summary of the Invention

[0003] This invention provides an automatic water meter detection device to solve the aforementioned technical problems.

[0004] The present invention adopts the following technical solution: It includes a water tank, which has a barrel-shaped structure. The interior of the water tank has a chamber for storing water for water meter testing. This chamber has a cylindrical structure design. A drain plate is located inside the water tank. Water meter connection pipe 1 and water meter connection pipe 2, connected to the internal chamber of the water tank, are respectively located on one side of the water tank near the upper and lower ends. Return pipe 1 and return pipe 2, also connected to the internal chamber of the water tank, are respectively located on the other side of the water tank near the upper and lower ends. Water meter connection pipe 1 and water meter connection pipe 2 are respectively connected to the inlet and outlet ports of the water meter to be tested via drainage pipes. The outer ports of return pipe 1 and return pipe 2 are connected by a return pipe. An adjustment frame is located at the rear of the water tank. Multiple closing components are installed on the adjustment frame to control the flow and closing states of water meter connection pipe 1, water meter connection pipe 2, return pipe 1, and return pipe 2. A driver is located at one end of the water tank to control the raising and lowering of the adjustment frame and the drain plate.

[0005] Furthermore, the drainage plate has a disc structure, and the outer diameter of the drainage plate matches the inner diameter of the internal cavity of the water tank; the drainage plate is placed horizontally inside the cavity of the water tank, that is, the outer diameter side of the drainage plate is in contact with the inner wall of the water tank cavity.

[0006] Furthermore, the actuator is located at the top of the water tank, and a support rod is fixedly installed at the top of the drainage plate. The top of the support rod extends out from the top of the water tank and is fixedly connected to the output end of the actuator. The actuator is an electric cylinder or a drive device with a linear telescopic pushing function at the output end. When the output end of the actuator is telescopically driven, it can drive the support rod to control the drainage plate to rise and fall inside the water tank.

[0007] Furthermore, the adjusting frame includes a support plate; the support plate is vertically arranged on the rear side of the water tank, and the support plate is slidably engaged with the rear area of ​​the water tank, and the support plate can slide towards the upper and lower ends of the water tank; the top end of the support plate is bent and extends towards the top of the water tank and is fixedly connected to the support rod; an adjusting plate one and an adjusting plate two are fixedly arranged on both sides of the support plate respectively; the two ends of the adjusting plate one are bent and extend towards the front of the water tank, wherein the top end of the adjusting plate one extends above the upper extension pipe of the water meter connecting pipe one, and the bottom end of the adjusting plate one extends above the upper extension pipe of the water meter connecting pipe two; the two ends of the adjusting plate two are also bent and extend towards the front of the water tank, such that the top end of the adjusting plate two extends below the upper extension pipe of the return pipe one, and the bottom end of the adjusting plate two extends below the upper extension pipe of the return pipe two. Furthermore, extension pipes are connected to the upper parts of both water meter connecting pipe one and water meter connecting pipe two; extension pipes are also connected to the lower parts of both return pipe one and return pipe two.

[0008] Furthermore, the extension pipe has an internal channel that communicates with the corresponding water meter connection pipe 1, water meter connection pipe 2, return pipe 1, and return pipe 2; the closure is located inside the channel of the extension pipe; the closure can extend and retract outward within the channel of the extension pipe to block the flow state inside the water meter connection pipe 1, water meter connection pipe 2, return pipe 1, and return pipe 2.

[0009] Furthermore, the closure is designed as a cylindrical structure, and the exterior of the closure is made of silicone material. The shape of the closure matches the internal shape of the extension tube. The bottom shape of the closure on water meter connecting pipe 1 and water meter connecting pipe 2 matches the internal shape of the corresponding water meter connecting pipe 1 and water meter connecting pipe 2; the top shape of the closure on return pipe 1 and return pipe 2 matches the internal shape of return pipe 1 and return pipe 2.

[0010] Furthermore, a first insertion rod is vertically installed on the extended ends of the first adjustment plate after bending at both ends. The bottom end of the first insertion rod is fixedly connected to the top end of the corresponding closure on the first and second water meter connecting pipes. The top end of the first insertion rod extends upward from the bottom end of the extended end of the first adjustment plate after bending, and the top end of the first insertion rod slides vertically with the corresponding extended end of the first adjustment plate after bending.

[0011] Furthermore, the two ends of the adjustment plate are vertically arranged with a second insertion rod. The top end of the second insertion rod is fixedly connected to the bottom end of the return pipe and the corresponding closure on the return pipe. The bottom end of the second insertion rod extends downward from the bottom end of the extension of the adjustment plate after bending, and the bottom end of the second insertion rod slides vertically with the corresponding extension of the adjustment plate after bending.

[0012] Furthermore, springs are provided on both the first and second insertion rods. The springs are respectively sleeved on the corresponding first and second insertion rods. Under the thrust of the two ends of the springs, a pushing force can be applied between the corresponding closing member and the bending extension of the corresponding first and second adjustment plates.

[0013] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: Firstly, this device forms a complete closed-loop water circulation system through a water tank, water meter connecting pipes, and return pipes. Driven by a actuator, the drain plate reciprocates, automatically completing the entire process of water injection testing and water return. No manual water transfer is required throughout the entire process, eliminating manual operation steps. During use, there is no need to stop for water replenishment or return. It is compatible with online water meter monitoring, effectively reducing water consumption and lowering testing water costs, thus possessing green and energy-saving advantages.

[0014] Secondly, the drainage plate in this application adopts a disc structure that precisely matches the inner diameter of the cylindrical cavity of the water tank. The outer periphery of the plate is tightly fitted to the inner wall of the water tank, dividing the water tank cavity into two independent and sealed spaces. There is no water leakage across zones during the lifting and lowering of the drainage plate, which solves the defects of water leakage and insufficient water pressure in traditional partitions. When the drainage board rises, it can completely squeeze the upper water body, forming a stable water pressure to push the water flow through the water meter at a uniform speed, ensuring a constant water flow velocity inside the water meter and uniform metering and detection conditions; when the drainage board descends, it can completely collect the backflow water below and compress the backflow.

[0015] Thirdly, a spring is installed on each closure component, providing continuous preload. This ensures the closure fits tightly against the pipe wall in the sealed state, effectively compensating for minor machining errors and maintaining a reliable seal even under fluctuating water pressure. Furthermore, the spring's cushioning effect prevents rigid impacts when the closure component contacts the pipe, thus extending the service life of both the closure component and the pipe. Through this linkage mechanism, this solution enables precise switching of the water flow path, ensuring that during water meter circulation detection, the water flow accurately enters the water meter for detection according to a preset path or circulates through a return path, effectively solving the problems of inadequate sealing and asynchronous switching in traditional solutions. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 Schematic diagram of the adjustment frame Figure 1 ; Figure 4 Schematic diagram of the adjustment frame Figure 2 ; Figure 5 This is a schematic diagram of the operating state of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the operating state of the present invention. Figure 2 .

[0017] Figure Labels Water tank 1, drainage board 11, support rod 111, water meter connecting pipe 1 12, water meter connecting pipe 2 13, return pipe 1 14, return pipe 2 15, extension pipe 16; Adjusting frame 2, support plate 21, adjusting plate one 22, adjusting plate two 23; Closure 3, Insert rod 1 31, Insert rod 2 32, Spring 33; Drive 4. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0019] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] In traditional water meter testing equipment, the water discharged from the water meter cannot be automatically circulated back within the equipment, resulting in a discontinuous testing process and cumbersome operation. This problem stems from the fact that the water discharged from the water meter must be collected by a separate collection device and then manually returned to water tank 1, which cannot form a closed-loop water flow path, thus affecting testing efficiency and automation.

[0021] Specifically, in the online water meter testing process, during continuous metering testing, after each test, the discharged water is collected in an external container. Operators must pause the testing process and manually transfer the water back to tank 1, causing interruptions and additional manual intervention. Furthermore, in this scenario, the discharged water cannot automatically flow back, necessitating manual intervention and impacting the continuity of testing and overall system efficiency. Without addressing these issues, the water meter testing process will remain reliant on manual operation, hindering automated continuous operation, reducing testing efficiency, and introducing errors through manual intervention, thus affecting the accuracy and reliability of the test results.

[0022] To address this, this application proposes an automatic water meter detection device, comprising a water tank 1 mounted on a supporting base plate; the water tank 1 has a barrel-shaped structure, and its interior contains a cylindrical chamber for storing water for water meter detection; a drain plate 11 is located inside the water tank 1; a water meter connecting pipe 12 and a water meter connecting pipe 13, respectively, are located on one side of the water tank 1 near its upper and lower ends, communicating with the internal chamber of the water tank 1; a return pipe 14 and a return pipe 15, respectively, are located on the other side of the water tank 1 near its upper and lower ends, communicating with the internal chamber of the water tank 1; the water meter connecting pipe... Pipe 12 and water meter connection pipe 2 are respectively connected to the inlet and outlet of the water meter to be tested through a water diversion pipe; the outer ports of return pipe 14 and return pipe 2 15 are connected through a return water pipe; an adjustment frame 2 is provided on the rear side of the water tank 1, and multiple closing parts 3 are provided on the adjustment frame 2 to control the flow and closing state of the water meter connection pipe 12, water meter connection pipe 2 13, return pipe 14 and return pipe 2 15; a driver 4 is provided at one end of the water tank 1 to control the adjustment frame 2 and the drainage plate 11 to rise and fall, and the driver 4 is provided on the support base plate.

[0023] In use, the water meter connecting pipe 12 is connected to the water inlet port of the water meter, and the water meter connecting pipe 13 is connected to the water outlet port of the water meter. The water tank 1 in this application is provided with inlet and outlet ports with valves for its upper and lower halves respectively. In use, a certain amount of water is first injected into the area above the drain plate 11 in the water tank 1 through the inlet. When the driver 4 is running, it drives the drain plate 11 to rise in the water tank 1, pushing the water rising from the drain plate 11 into the water meter connecting pipe 12 and into the water meter. When the drain plate 11 rises, it will compress the upper area and increase the space in the area below the drain plate 11 in the water tank 1. Water flows through the water meter and exits from the outlet. The water meter measures the flow of water. The water exiting the outlet then flows through the water meter connection pipe 2 13 into the enlarged space below the drain plate 11 in the water tank 1. This allows the area below the drain plate 11 in the water tank 1 to collect the returned detection water. When the output of the driver 4 reverses, it drives the drain plate 11 to descend, compressing the space below it and increasing the space above it. At this time, the drain plate 11 can push the water below it into the return pipe 2 15, and then discharge it again into the area above the drain plate 11 through the return water pipe and the return pipe 1 14. This backflow of water facilitates the secondary water injection into the water meter. Then, the driver 4 runs again to drive the drain plate 11 to rise again and deliver water into the water meter. Through repeated operation, water in the water tank 1 can be repeatedly delivered into the water meter and the discharged water can be collected, realizing the water meter's circulating water detection.

[0024] In some of the embodiments described above in this application, a scheme is proposed to drive water flow circulation detection by raising and lowering the drain plate 11 inside the water tank 1. However, in its implementation, if there is a gap between the drain plate 11 and the inner wall of the water tank 1, water will leak on both sides of the drain plate 11, making it impossible for the drain plate 11 to effectively compress the space inside the water tank 1, resulting in insufficient water flow delivery pressure and failure to achieve stable and efficient circulation detection of the water meter. In this regard, this application further proposes that the drainage plate 11 is a disc structure, and the outer diameter of the drainage plate 11 matches the inner diameter of the internal cavity of the water tank 1; the drainage plate 11 is placed horizontally in the cavity of the water tank 1, that is, the outer diameter side of the drainage plate 11 is in contact with the inner wall of the cavity of the water tank 1. Specifically, the drain plate 11 is a disc structure, meaning it is a plate-shaped component with a circular cross-section and relatively small thickness. Its main function is to act as a piston or baffle within the chamber of the water tank 1, pushing or collecting water flow through its lifting and lowering motion. This disc structure can be a solid design, integrally molded from metal, engineering plastics, or composite materials to provide sufficient rigidity and durability; or, to reduce weight while maintaining structural strength. The outer diameter of the drain plate 11 matches the inner diameter of the internal chamber of the water tank 1, meaning their dimensions are close, allowing the drain plate 11 to move freely within the chamber while minimizing the gap between them. This matching can be achieved through precision machining, controlling the tolerance between the outer diameter of the drain plate 11 and the inner diameter of the chamber within a very small range; alternatively, the outer diameter of the drain plate 11 can be slightly smaller than the inner diameter of the chamber, but the gap is compensated by setting a flexible sealing ring on the outer periphery of the drain plate 11 to ensure sealing. The drain plate 11 is placed horizontally within the chamber of the water tank 1, meaning its plane is perpendicular to the axis of the chamber of the water tank 1, i.e., its direction of movement is parallel to the axis of the chamber. This can be achieved by connecting the center of the drain plate 11 to the support rod 111, and having the drive 4 move the support rod 111 up and down along the chamber axis. The outer diameter side of the drain plate 11 is kept in contact with the inner wall of the water tank 1 chamber, meaning that the side edge of the drain plate 11 is in close contact with the inner wall of the water tank 1 chamber, forming an effective seal. This can be achieved by using an elastic material, such as rubber or silicone, for the edge of the drain plate 11, or by installing an elastic sealing ring on its outer circumference, causing it to deform slightly when in contact with the inner wall of the chamber, thus achieving a tight fit; alternatively, the inner wall of the chamber can be highly polished to reduce frictional resistance while ensuring a smooth contact surface between the drain plate 11 and the inner wall, improving the fit.

[0025] The solution of this application, through the aforementioned technical means, enables the drainage plate 11 to achieve effective sealing and compression of the cavity space during its lifting and lowering movement within the water tank 1. Specifically, the internal cavity of the water tank 1 is designed as a cylindrical structure, while the drainage plate 11 is designed as a disc structure with its outer diameter precisely matching the inner diameter of the cavity. It is placed horizontally, ensuring that the outer diameter side of the drainage plate 11 is tightly fitted against the inner wall of the water tank 1 cavity. When the actuator 4 drives the drainage plate 11 upward, the tight fit between the drainage plate 11 and the inner wall of the cavity effectively blocks water flow at the edge of the drainage plate 11, ensuring that the water above the drainage plate 11 is completely pushed into the water meter connection pipe 12 and transported to the water meter to be tested. This guarantees the pressure and efficiency of water flow transmission and avoids pressure loss due to leakage. When water flows through the water meter and returns from the water meter connection pipe 13 to the space below the drainage plate 11, the tight fit of the drainage plate 11 also ensures that the returned water is effectively collected and does not leak onto the area above the drainage plate 11. Subsequently, when the drive 4 reverses and lowers the drain plate 11, the water below the drain plate 11 is effectively compressed and pushed into the return pipe 15. From there, it flows back through the return pipe and the first return pipe 14 to the area above the drain plate 11, preparing for the next water filling of the water meter. This design allows the drain plate 11 to divide the water tank 1 chamber into two relatively independent pressure spaces during its lifting and lowering action, ensuring the pressure stability of the water flow during circulation and preventing backflow or pressure loss due to poor sealing. This provides a reliable power transmission basis for the water meter's circulation detection.

[0026] The above technical solution effectively solves the water leakage problem caused by the gap between the drainage plate 11 and the inner wall of the water tank 1, ensuring that the drainage plate 11 can effectively seal and compress the chamber space when it rises and falls within the water tank 1. This significantly improves the pressure and stability of water flow, thereby ensuring stable and efficient circulation detection of the water meter and improving the accuracy and reliability of water meter detection.

[0027] In some of the embodiments described above in this application, a method is proposed to drive the drain plate 11 to move up and down within the water tank 1 via the driver 4 to achieve water circulation detection. However, in practical applications, how to stably and accurately transmit the power of the driver 4 to the drain plate 11 inside the water tank 1 and ensure that the drain plate 11 remains stable during the lifting process, so as to avoid the drain plate 11 tilting or getting stuck due to the instability of the transmission structure, thereby affecting the accuracy and reliability of water circulation detection, is a technical challenge faced by this solution in its implementation. In this regard, this application further proposes that the driver 4 is set at the top of the water tank 1, and the top of the drain plate 11 is fixedly provided with a support rod 111. The top of the support rod 111 extends out from the top of the water tank 1 and is fixedly connected to the output end of the driver 4. The driver 4 is an electric cylinder or a driving device with a linear telescopic pushing function at the output end. When the output end of the driver 4 is telescopically driven, it can drive the support rod 111 to control the drain plate 11 to rise and fall in the water tank 1. Specifically, the actuator 4 is positioned at the top of the water tank 1 to provide linear driving force directly to the drain plate 11. This layout simplifies the transmission path, reduces energy loss, and allows more space for the internal structure of the water tank 1. A support rod 111 is fixedly mounted at the top of the drain plate 11, serving as a connector. Its top is fixedly positioned at the center of the drain plate 11, ensuring that the driving force is evenly transmitted to the drain plate 11 and preventing tilting due to uneven force distribution. The top of the support rod 111 extends from the top of the water tank 1 and is fixedly connected to the output end of the actuator 4, allowing the actuator 4 to be installed outside the water tank 1 for easy maintenance and replacement, while preventing the actuator 4 from directly contacting the detected water. The fixed connection to the output end of the actuator 4 ensures that the linear motion generated by the actuator 4 is directly and seamlessly transmitted to the support rod 111, thereby driving the drain plate 11 to perform precise lifting and lowering movements. The actuator 4 can be an electric cylinder, which uses a motor to drive a lead screw or ball screw to achieve linear motion, offering advantages such as high positioning accuracy, smooth operation, and convenient control. Alternatively, other drive devices with linear telescopic pushing capabilities at the output end can be used, such as cylinders with precision guide rails or hydraulic cylinders. These devices can provide stable linear pushing and pulling forces to meet the lifting and lowering requirements of the drainage plate 11. When the output end of the driver 4 is in telescopic driving mode, it transmits the linear motion directly to the support rod 111 through a fixed connection with the support rod 111. The support rod 111 then transmits this motion to the drainage plate 11, thereby precisely controlling the vertical lifting and lowering of the drainage plate 11 within the internal cavity of the water tank 1, achieving the compression and suction of the water in the water tank 1, and thus driving the water flow through the water meter to be tested.

[0028] The solution of this application constructs a vertical power transmission system by placing the actuator 4 at the top of the water tank 1 and using the support rod 111 as a connecting medium, thereby controlling the lifting and lowering movement of the drain plate 11. Specifically, the actuator 4 is installed at the top of the water tank 1, and its output end is fixedly connected to the center position of the top of the drain plate 11 inside the water tank 1 via the support rod 111. The support rod 111 extends out from the top of the water tank 1, directly and vertically transmitting the linear telescopic push-pull force generated by the actuator 4 to the drain plate 11. This direct and central transmission method, combined with the characteristic that the drain plate 11 is a disc structure and its outer diameter matches the inner diameter of the internal cavity of the water tank 1, ensures that the driving force can be evenly applied to the drain plate 11, effectively avoiding the problem of deflection or jamming of the drain plate 11 caused by uneven lateral force. When the output end of the driver 4 extends or retracts, the support rod 111 drives the drainage plate 11 to move smoothly up and down within the chamber of the water tank 1, always maintaining its horizontal position and close contact with the inner wall of the chamber. This effectively compresses and draws in the water in the water tank 1, ensuring that the water flow can stably and continuously pass through the water meter for detection. This structural design not only simplifies the mechanical transmission chain and reduces energy loss and errors caused by mechanical clearances, but also provides a stable and reliable power source for the water meter's cyclic detection, significantly improving the accuracy and reliability of the detection process.

[0029] In one specific implementation, the driver 4 can be a servo electric cylinder, which integrates a servo motor, a reduction mechanism, and a ball screw. Closed-loop control is achieved through an encoder, ensuring high-precision positioning and speed control. The top of the support rod 111 is threaded to the piston rod of the servo electric cylinder and secured with a lock nut, ensuring reliable and rigid connection. The bottom of the support rod 111 is connected to the center of the drain plate 11 via a flange and bolts. The flange and drain plate 11 are integrally formed or securely connected by welding, riveting, or other methods. A guide sleeve with a double-lip seal can be installed at the point where the support rod 111 protrudes from the top of the water tank 1. This guide sleeve is made of wear-resistant polytetrafluoroethylene (PTFE) material to prevent water leakage from inside the water tank 1 and to provide precise guiding support for the support rod 111, further ensuring the smoothness of the drain plate 11's lifting and lowering.

[0030] Through the above technical solution, this application effectively solves the technical problems of unstable power transmission of the driver 4 and easy tilting or jamming of the drainage plate 11. The design of the driver 4 being positioned at the top and the support rod 111 being centrally connected to the drainage plate 11 ensures that the driving force can be applied vertically and evenly to the drainage plate 11. Combined with the tight fit between the drainage plate 11 and the chamber of the water tank 1, the drainage plate 11 maintains stable operation during the lifting and lowering process, avoiding deflection and jamming caused by instability in the transmission structure. This not only ensures the stability of the water injection and return pressure during water circulation detection, but also significantly improves the accuracy and reliability of water meter detection, providing a solid technical guarantee for achieving efficient and accurate water meter circulation and water detection.

[0031] In some of the embodiments described above in this application, a scheme is proposed to achieve water meter circulation detection by driving the drain plate 11 to rise and fall through the driver 4. However, in actual operation, how to accurately and synchronously control the on / off state of the water meter connecting pipe and the return pipe to ensure that the water flow can be accurately switched between the detection and return stages, and avoid misleading connection or chaotic flow between the pipes, is the key difficulty in achieving automated circulation detection. In response, this application proposes an automatic water meter detection device, wherein the adjusting frame 2 includes a support plate 21; the support plate 21 is vertically arranged on the rear side of the water tank 1, and the support plate 21 is in sliding fit with the rear area of ​​the water tank 1, and the support plate 21 can slide towards the upper and lower ends of the water tank 1; the top end of the support plate 21 is bent and extends towards the top end of the water tank 1 and is fixedly connected to the support rod 111; an adjusting plate 1 22 and an adjusting plate 23 are fixedly arranged on both sides of the support plate 21 respectively; the two ends of the adjusting plate 1 22 are bent... Extending towards the front of water tank 1, the top end of adjustment plate 22 extends above the extension pipe 16 of water meter connecting pipe 12, and the bottom end of adjustment plate 22 extends above the extension pipe 16 of water meter connecting pipe 23; the two ends of adjustment plate 23 are bent and also extend towards the front of water tank 1, so that the top end of adjustment plate 23 extends below the extension pipe 16 of return pipe 14, and the bottom end of adjustment plate 23 extends below the extension pipe 16 of return pipe 25. The regulating frame 2 is a mechanical structure used to control the flow and closure states of the water meter connection pipe 12, water meter connection pipe 23, return pipe 14, and return pipe 25. Its main function is to act as a mechanical transmission medium between the actuator 4 and the closing element 3, converting the linear motion of the actuator 4 into precise control of the pipe flow. The regulating frame 2 can be made of metal materials, such as stainless steel or aluminum alloy, or high-strength engineering plastics, such as polycarbonate or polyoxymethylene, to ensure structural stability and corrosion resistance. The support plate 21 is the main structure of the regulating frame 2, vertically positioned at the rear of the water tank 1 and slidingly engaged with the rear area of ​​the water tank 1. The support plate 21 supports the regulating plates 22 and 23 and serves as the connection point between the regulating frame 2 and the actuator 4 and the support rod 111. The support plate 21 can be a rectangular plate structure, and its material can be a corrosion-resistant material matching the material of the water tank 1, such as stainless steel or corrosion-resistant aluminum alloy. The support plate 21 is slidably fitted to the rear area of ​​the water tank 1, and the support plate 21 can slide towards the upper and lower ends of the water tank 1. This sliding fit ensures that the support plate 21 can move freely along the vertical direction of the water tank 1, thereby achieving the adjustment of the pipe flow. The sliding fit can be achieved in various ways. For example, a pair of vertical guide rails can be provided on the rear side of the water tank 1, and sliders that cooperate with the guide rails can be provided on both sides of the support plate 21; or, the edge of the support plate 21 can be provided with a dovetail groove, and the rear side of the water tank 1 can be provided with a dovetail tenon structure that cooperates with it. The top end of the support plate 21 is bent and extends towards the top end of the water tank 1 and is fixedly connected to the support rod 111. The top end of the support plate 21 extends upward through the bending structure and forms a fixed connection with the support rod 111 connected to the output end of the driver 4. This connection method ensures that the vertical movement of the adjusting frame 2 is synchronized with the lifting and lowering movement of the drain plate 11 driven by the driver 4. The fixed connection can be achieved by bolting, welding, riveting, or integral molding, ensuring the strength and reliability of the connection. Adjusting plate 1 22 and adjusting plate 23 are fixedly installed on both sides of the support plate 21, respectively. Adjusting plate 1 22 and adjusting plate 23 are installed on both sides of the support plate 21 and are components that directly interact with the pipe closure component 3. The fixing can be achieved by welding, bolting, riveting, or using a snap-fit ​​structure to ensure that the adjusting plates can move stably with the support plate 21 when it moves. The two ends of adjusting plate 1 22 are bent and extend towards the front of the water tank 1. The top end of the adjusting plate 22 extends above the extension pipe 16 on the water meter connecting pipe 12, and the bottom end extends above the extension pipe 16 on the water meter connecting pipe 13. This specific bending and extension structure of the adjusting plate 22 allows it to be positioned above both the water meter connecting pipe 12 and the water meter connecting pipe 13. This positional relationship prepares for subsequent control of the on / off state of the water meter connecting pipes. When the adjusting frame 2 moves, the extended portion of the adjusting plate 22 can act downwards on the closing member 3 on the water meter connecting pipe, thereby closing the pipeline. Both ends of the regulating plate 23 are bent and extend towards the front of the water tank 1, so that the top part of the regulating plate 23 extends below the extension pipe 16 on the return pipe 14, and the bottom part extends below the extension pipe 16 on the return pipe 25. The bending and extension structure of the regulating plate 23 positions it below the return pipe 14 and the return pipe 25. Similar to the regulating plate 22, this positional relationship is to prepare for subsequent control of the on / off state of the return pipe. When the regulating frame 2 moves, the extended part of the regulating plate 23 can act upward on the closing member 3 on the return pipe, thereby closing the pipeline.

[0032] When the actuator 4 drives the support rod 111 to move the drainage plate 11 up and down within the water tank 1, the support plate 21, which is fixedly connected to the support rod 111, also slides up and down synchronously. Adjusting plates 22 and 23, fixedly mounted on both sides of the support plate 21, have their bent extensions precisely positioned above the water meter connecting pipe 12 and 13, and below the return pipe 14 and 15, respectively. This structural layout allows the extension of adjusting plate 22 to act downwards on the closure 3 on the water meter connecting pipe during the drainage plate 11's descent for water filling detection, keeping it open or closed in a specific position; conversely, when the drainage plate 11 rises for return flow, the extension of adjusting plate 23 can act upwards on the closure 3 on the return pipe, keeping it open or closed in a specific position. Through this physical positioning and mechanical linkage, the adjusting frame 2 can automatically and synchronously switch the on / off state of the water meter detection pipe and the return pipe according to the direction of movement of the drainage plate 11. For example, when the drain plate 11 rises, the water meter connection pipe opens and the return pipe closes, ensuring that water flows accurately into the water meter for detection; when the drain plate 11 falls, the water meter connection pipe closes and the return pipe opens, ensuring that the detected water can flow back smoothly. This design eliminates the need for a separate control system to manage the pipeline valves, instead utilizing the existing motion of the actuator 4 to achieve precise and synchronous switching of the water flow path, effectively avoiding the problems of misaligned pipelines or chaotic flow that may occur in traditional solutions.

[0033] In one specific implementation, the support plate 21 of the regulating frame 2 can be made of stainless steel sheet and is vertically arranged on the rear side of the water tank 1. To achieve a sliding fit between the support plate 21 and the rear area of ​​the water tank 1, a guide rail can be welded to the rear side of the water tank 1, and the support plate 21 is equipped with a slider that matches the guide rail, so that the support plate 21 can slide smoothly up and down along the guide rail. The top of the support plate 21 is formed into an L-shaped extension through an integral bending process, and this extension is firmly fixed to the bottom end of the support rod 111 by two bolts. The two sides of the support plate 21 can be fixed with regulating plate one 22 and regulating plate two 23 respectively by welding. These two regulating plates are also made of stainless steel sheet and are precision bent. The top and bottom extensions of regulating plate one 22 can be designed with arc-shaped ends to ensure that a thrust can be smoothly applied when in contact with the closing part 3 above the water meter connecting pipe one 12 and water meter connecting pipe two 13. Similarly, the top and bottom extensions of the second regulating plate 23 can also be designed with arc-shaped ends to ensure a smooth application of thrust when in contact with the closure 3 below the first return pipe 14 and the second return pipe 15. When the actuator 4 drives the support rod 111 to descend, the support plate 21 descends accordingly, and the extension of the first regulating plate 22 pushes downwards to open the closure 3 on the water meter connecting pipe, while the extension of the second regulating plate 23 moves upwards away from the closure 3 on the return pipe, closing it. Conversely, when the actuator 4 drives the support rod 111 to rise, the support plate 21 rises accordingly, and the extension of the first regulating plate 22 moves upwards away from the closure 3 on the water meter connecting pipe, closing it, while the extension of the second regulating plate 23 pushes downwards to open the closure 3 on the return pipe.

[0034] Through the above technical solution, the adjusting frame 2 proposed in this application achieves mechanical linkage between the lifting and lowering movements of the adjusting frame 2 and the drainage plate 11 through the sliding cooperation between its support plate 21 and the water tank 1 and the fixed connection with the support rod 111. Specifically, during the water meter detection stage, the adjusting frame 2 ensures that the water meter connection pipe passage is open while the return pipe passage is closed, ensuring that the water flow accurately enters the water meter; during the water return stage, it ensures that the water meter connection pipe passage is closed while the return pipe passage is open, achieving smooth return of the detected water. This mechanical linkage method, which does not require an additional independent control unit, significantly simplifies the control system of the entire device, reduces system complexity and failure rate, and effectively avoids misdirection or chaotic flow of water during detection and return processes through precise physical positioning, thus providing a reliable and stable technical guarantee for the efficient and automated cyclic detection of the water meter.

[0035] In some of the embodiments described above in this application, it is proposed to control the flow of water meter connecting pipe and return pipe by using the adjusting frame 2 to drive the closing member 3. However, in the process of implementation, since the sealing fit between the closing member 3 and the pipeline often relies on simple mechanical contact, it is easy to cause poor sealing due to pressure fluctuations or mechanical wear. Moreover, there is a lack of a linkage mechanism that can automatically compensate for the sealing pressure and ensure accurate alignment between the closing member 3 and the pipeline, which can easily lead to problems such as water leakage or asynchronous pipeline switching during the cyclic detection process. In this regard, this application further proposes that an extension pipe 16 is connected to the upper part of both water meter connecting pipe 12 and water meter connecting pipe 2 13; an extension pipe 16 is also connected to the lower part of both return pipe 14 and return pipe 2 15; the extension pipe 16 has a channel inside that communicates with its corresponding water meter connecting pipe 12, water meter connecting pipe 2 13, return pipe 14, and return pipe 2 15; a closing member 3 is provided in the channel of the extension pipe 16; the closing member 3 can extend and retract outward within the channel of the extension pipe 16, thereby controlling the water meter connecting pipe 12 and water meter connecting pipe 2 13. 13. The flow state inside return pipe 14 and return pipe 25 is blocked; the closure 3 has a cylindrical structure design, and the outside of the closure 3 is made of silicone material. The shape of the closure 3 matches the internal shape of the extension pipe 16; the bottom shape of the closure 3 on water meter connection pipe 12 and water meter connection pipe 23 matches the internal shape of the corresponding water meter connection pipe 12 and water meter connection pipe 23; the top shape of the closure 3 on return pipe 14 and return pipe 25 matches the internal shape of return pipe 14 and return pipe 25. Matching; A vertically positioned insertion rod 31 is installed on the extended ends of the bending adjustment plate 22 at both ends. The bottom end of the insertion rod 31 is fixedly connected to the top end of the corresponding closure 3 on the water meter connecting pipe 12 and the water meter connecting pipe 23. The top end of the insertion rod 31 extends upward from the inside from the bottom end of the bent extension of the adjustment plate 22, and the top end of the insertion rod 31 slides vertically with the corresponding extended end of the bent adjustment plate 22. A vertically positioned insertion rod 32 is installed on the extended ends of the bending adjustment plate 23 at both ends. The top end of the insertion rod 32 is connected to the return pipe 14 at... The bottom end of the corresponding closure 3 on the return pipe 2 15 is fixedly connected; the bottom end of the second insertion rod 32 extends downward from the inside after the extension end of the first adjustment plate 22 is bent, and the bottom end of the second insertion rod 32 and the corresponding extension end of the second adjustment plate 23 are in a sliding fit; springs 33 are provided on the first insertion rod 31 and the second insertion rod 32 respectively, and the springs 33 are respectively sleeved on the corresponding first insertion rod 31 and the second insertion rod 32. Under the pushing force at both ends of the springs 33, a pushing force can be applied between the corresponding closure 3 and the corresponding bending extension parts of the first adjustment plate 22 and the second adjustment plate 23.

[0036] The extension pipe 16 is an auxiliary pipe section used to connect to the main pipe and accommodate the closure element 3. Its function is to provide installation space and guidance for the closure element 3, ensuring that it can accurately enter or exit the main pipe, thereby controlling the fluid. The extension pipe 16 can be integrally formed with the main pipe, or connected to the main pipe by welding, threaded connection, etc. Its internal shape can be consistent with the cross-sectional shape of the main pipe, such as circular or square, to ensure smooth fluid flow. The closure element 3 is a component used to block or allow fluid flow in the pipe. Its function is to precisely control the internal flow state of the water meter connection pipe 12, water meter connection pipe 23, return pipe 14, and return pipe 25 through telescopic movement. In addition to a cylindrical silicone material design, the closure element 3 can also be made of other elastic materials, such as nitrile rubber, fluororubber, etc., or a rigid material with an elastic sealing ring. Its shape can be customized according to the internal shape of the extension pipe 16 and the corresponding pipe to ensure a good sealing effect. The closure 3 is made of silicone, utilizing silicone's excellent elasticity, wear resistance, corrosion resistance, and sealing properties to ensure a tight fit between the closure 3 and the inner wall of the pipe, effectively preventing fluid leakage. Silicone can be manufactured through processes such as compression molding and injection molding, and its hardness can be adjusted according to the required sealing pressure and wear resistance. Insert rod 1 31 and insert rod 2 32 are rod-shaped structures connecting the adjusting plate and the closure 3. Their function is to transmit the lifting and lowering movement of the adjusting plate to the closure 3, causing it to extend and retract within the extension tube 16, thereby controlling the opening and closing of the pipe. The insert rods can be made of metal materials with sufficient strength and corrosion resistance, such as stainless steel or aluminum alloy, and their surfaces can be polished or plated to reduce friction. The insert rods and the closure 3 can be fixed using threaded connections, pin connections, or integral molding. The insertion rod and the bent extension end of the adjusting plate have a sliding fit, meaning that the insertion rod and the bent extension end of the adjusting plate are allowed to move relatively up and down. This ensures that the insertion rod can smoothly drive the closing member 3 during the raising and lowering of the adjusting plate, while providing preload or buffer space for the spring 33. Low-friction sliding can be achieved by creating guide grooves or holes in the adjusting plate, through which the insertion rod passes, and with the help of guide sleeves or bearings. The spring 33 is an elastic element that can store and release mechanical energy. Its function is to provide a continuous pushing force between the insertion rod and the closing member 3, ensuring that the closing member 3 can tightly fit against the inner wall of the pipe during sealing, compensating for machining errors, and providing a buffering effect. The spring 33 can be in the form of a helical compression spring 33, a disc spring 33, or a wave spring 33, and the material can be piano wire, stainless steel, etc. The stiffness of the spring 33 should be selected according to the required pushing force and stroke.

[0037] This application's solution adds extension pipes 16 at specific locations on water meter connection pipe 12, water meter connection pipe 2 13, return pipe 14, and return pipe 2 15, and configures closure components 3 with specific shapes and materials inside the extension pipes 16. Combined with the linkage mechanism of the adjusting frame 2, the insertion rod, and the spring 33, precise and reliable control of the water flow path is achieved. Specifically, extension pipes 16 are connected to the upper parts of water meter connection pipe 12 and water meter connection pipe 2 13, and extension pipes 16 are also connected to the lower parts of return pipe 14 and return pipe 2 15. Each of these extension pipes 16 has a channel connecting to its corresponding water meter connection pipe 12, water meter connection pipe 2 13, return pipe 14, and return pipe 2 15, providing space for the installation and movement of the closure components 3. The closure components 3 are installed within these channels of the extension pipes 16. These closures 3 are designed as cylindrical structures with an outer silicone material. Their shape matches the internal shape of the extension pipe 16, ensuring good sealing performance. Specifically, the bottom shape of the closures 3 located on the first water meter connection pipe 12 and the second water meter connection pipe 13 matches the internal shape of the corresponding water meter connection pipe 12 and the second water meter connection pipe 13, so as to effectively seal from above; while the top shape of the closures 3 located on the first return pipe 14 and the second return pipe 15 matches the internal shape of the first return pipe 14 and the second return pipe 15, so as to effectively seal from below. To achieve precise control of the closures 3, the two ends of the adjustment plate 22 are vertically provided with insert rods 31 after being bent. The bottom end of the insert rods 31 is fixedly connected to the top end of the corresponding closures 3 on the first water meter connection pipe 12 and the second water meter connection pipe 13. The top end of the first insertion rod 31 extends upward from the bottom end of the bent extension of the first adjustment plate 22, and slides vertically with the corresponding bent extension of the first adjustment plate 22. Similarly, the two ends of the second adjustment plate 23 are vertically provided with second insertion rods 32, the top ends of which are fixedly connected to the bottom ends of the corresponding closures 3 on the first return pipe 14 and the second return pipe 15. The bottom end of the second insertion rod 32 extends downward from the bottom end of the bent extension of the first adjustment plate 22, and slides vertically with the corresponding bent extension of the second adjustment plate 23. Springs 33 are provided on both the first insertion rod 31 and the second insertion rod 32, respectively. Under the thrust of the two ends of the springs 33, they can apply a pushing force between the corresponding closures 3 and the bent extensions of the corresponding first adjustment plate 22 and the second adjustment plate 23. When the driver 4 drives the adjustment frame 2 to rise and fall, the adjustment plate 22 and the adjustment plate 23 will move synchronously.For example, when the regulating frame 2 rises, the regulating plate 22 will move the insert rod 31 below it upwards, causing the closing parts 3 on the water meter connecting pipe 12 and the water meter connecting pipe 23 to retract upwards into the extension pipe 16, releasing the blockage on the water meter connecting pipe 12 and the water meter connecting pipe 23, allowing water to flow through. At the same time, the regulating plate 23 will also rise, but due to the connection method of the insert rod 32, it will push the closing parts 3 on the return pipe 14 and the return pipe 25 downwards to extend into the channels of the return pipe 14 and the return pipe 25, thus sealing the return pipe 14 and the return pipe 25. Conversely, when the regulating frame 2 descends, the regulating plate 22 will drive the insert rod 31 to move downward, causing the closing parts 3 on the water meter connecting pipe 12 and the water meter connecting pipe 23 to extend downward and block the water meter connecting pipe 12 and the water meter connecting pipe 23; while the regulating plate 23 will descend, causing the closing parts 3 on the return pipe 14 and the return pipe 25 to retract upward, releasing the blockage of the return pipe 14 and the return pipe 25.

[0038] The presence of spring 33 is crucial to this solution. It provides continuous preload to the closure element 3, ensuring a tight seal against the inner wall of the pipe when sealed. This effectively compensates for minor machining errors and maintains a reliable seal even under fluctuating water pressure. Furthermore, the buffering effect of spring 33 prevents rigid impacts when the closure element 3 contacts the pipe, thus extending the service life of both the closure element 3 and the pipe. Through this linkage mechanism, this solution enables precise switching of the water flow path, ensuring that during water meter circulation detection, the water flow accurately enters the water meter for detection according to a preset path or circulates through a return path, effectively solving the problems of inadequate sealing and asynchronous switching in traditional solutions.

[0039] As a specific implementation method, the above-mentioned technical means can be implemented with reference to the following example. The extension pipe 16 can be made of the same polyvinyl chloride or stainless steel material as the internal cavity of the water tank 1, and is connected to the main pipeline of water meter connection pipe 12, water meter connection pipe 23, return pipe 14, and return pipe 25 by hot-melt welding or flange connection. The internal channel of the extension pipe 16 can be designed with a circular cross-section with the same inner diameter as the main pipeline to ensure minimal fluid resistance. The closure 3 can be made of food-grade silicone material with a Shore hardness of 40A-60A, integrally molded into a cylindrical shape using a precision mold. Its outer diameter precisely matches the inner diameter of the extension pipe 16, with a tolerance controlled within 0.05 mm to ensure a tight fit under pressure. The bottom end of the closure 3 located on water meter connection pipe 12 and water meter connection pipe 23 can be designed as conical or arc-shaped to match the inlet shape of the corresponding water meter connection pipe, to achieve better flow guidance and sealing effects. Similarly, the top of the closure 3 located on return pipe 14 and return pipe 2 15 can also be designed as a corresponding conical or arc-shaped shape to match the outlet shape of the return pipe. Insert rod 1 31 and insert rod 2 32 can be made of 304 stainless steel bar with a diameter of 6 mm and finely polished. The bottom end of the insert rod is fixedly connected to the metal nut pre-embedded inside the closure 3 via threads. The top of the insert rod passes through a guide hole with a diameter of 6.2 mm pre-reserved on adjusting plate 1 22 and adjusting plate 2 23. A self-lubricating bearing or PTFE bushing can be embedded in the guide hole to reduce sliding friction and improve the smoothness of movement. Spring 33 can be a stainless steel compression spring with an outer diameter of 10 mm, a wire diameter of 0.8 mm, and a free length of 20 mm. Its spring constant can be set to 5 N / mm. Spring 33 is sleeved on the plug rod, with one end abutting against the top or bottom of the closure member 3, and the other end abutting against the inner surface of the bent extension of the adjusting plate 22 or the adjusting plate 23. When the closure member 3 is driven to the blocking position, spring 33 is compressed, generating a continuous preload force, such as 20 Newtons, to ensure tight contact between the closure member 3 and the inner wall of the pipe.

[0040] Through the above technical solution, this application effectively solves the problems of water leakage and inaccurate detection caused by poor sealing between the closure element 3 and the pipeline and asynchronous pipeline switching during the cyclic detection process of traditional automatic water meter detection devices. Specifically, the closure element 3 is made of silicone material, and its shape is precisely matched with the internal shape of the extension pipe 16 and the corresponding pipeline. Utilizing the inherent elasticity and deformation capability of silicone material, the closure element 3 can form a tight fit with the inner wall of the pipeline when sealing, significantly improving the sealing performance and effectively preventing fluid leakage. In addition, through the linkage mechanism composed of adjusting plate 1 22, adjusting plate 23, insert rod 1 31, insert rod 2 32 and spring 33, the lifting motion of the driver 4 is precisely converted into the extension and retraction motion of the closure element 3. The sliding cooperation between the insert rod and the adjusting plate ensures the smooth movement of the closure element 3 and the accuracy of its positioning. More importantly, spring 33 provides a continuous elastic pushing force between the closure 3 and the adjusting plate. This not only automatically compensates for minor errors that may occur during machining and assembly, ensuring that the closure 3 is always pressed tightly in the sealing position with a stable preload, but also effectively prevents rigid impact when the closure 3 contacts the pipeline, thereby extending the service life of the closure 3 and related pipelines. This design makes the switching of water flow paths more precise and reliable. During the water meter circulation test, it ensures that the water flow accurately enters the water meter under test or flows back along the preset path, avoiding detection errors caused by poor sealing or asynchronous switching. This improves the accuracy and efficiency of water meter testing and ensures the stability and reliability of the entire testing process.

[0041] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. An automatic water meter detection device, characterized in that, Including water tank (1); The water tank (1) has a barrel-shaped structure. The interior of the water tank (1) is equipped with a chamber for storing the water detected by the water meter. The chamber is designed as a cylindrical structure. A drain plate (11) is installed inside the water tank (1); A water meter connecting pipe 1 (12) and a water meter connecting pipe 2 (13) are respectively provided on one side of the water tank (1) and near the upper and lower ends, which are connected to the internal chamber of the water tank (1). On the other side of the water tank (1) and near the upper and lower ends, there are two return pipes (14 and 15) that are connected to the internal chamber of the water tank (1). Water meter connecting pipe one (12) and water meter connecting pipe two (13) are respectively connected to the inlet and outlet of the water meter to be tested through the water diversion pipe; The outer ports of return pipe one (14) and return pipe two (15) are connected by a return water pipe; An adjustment frame (2) is provided on the rear side of the water tank (1). Multiple closing parts (3) are provided on the adjustment frame (2) to control the internal flow and closing states of the water meter connection pipe 1 (12), water meter connection pipe 2 (13), return pipe 1 (14) and return pipe 2 (15). A drive (4) is provided at one end of the water tank (1) to control the lifting and lowering of the adjustable frame (2) and the drain plate (11).

2. The automatic water meter detection device according to claim 1, characterized in that, The drainage plate (11) is a disc structure, and the outer diameter of the drainage plate (11) matches the inner diameter of the internal cavity of the water tank (1); The drainage board (11) is placed horizontally in the chamber of the water tank (1), that is, the outer diameter side of the drainage board (11) is in contact with the inner wall of the chamber of the water tank (1).

3. The automatic water meter detection device according to claim 1, characterized in that, The driver (4) is located at the top of the water tank (1). A support rod (111) is fixedly installed at the top of the drainage plate (11). The top of the support rod (111) extends out from the top of the water tank (1) and is fixedly connected to the output end of the driver (4). The driver (4) is an electric cylinder or a driving device with a linear extension and retraction pushing function at the output end. When the output end of the driver (4) is extended and retracted, it can drive the support rod (111) to control the drainage plate (11) to rise and fall in the water tank (1).

4. The automatic water meter detection device according to claim 3, characterized in that, The adjustment frame (2) includes a support plate (21); The support plate (21) is vertically arranged on the rear side of the water tank (1). The support plate (21) is in sliding fit with the rear area of ​​the water tank (1), and the support plate (21) can slide towards the upper and lower ends of the water tank (1). The top of the support plate (21) is bent and extends toward the top of the water tank (1) and is fixedly connected to the support rod (111); Adjustment plate one (22) and adjustment plate two (23) are fixedly installed on both sides of the support plate (21); The two ends of the first adjustment plate (22) are bent and extend towards the front of the water tank (1). The top part of the first adjustment plate (22) extends above the extension pipe (16) of the first water meter connecting pipe (12), and the bottom part of the first adjustment plate (22) extends above the extension pipe (16) of the second water meter connecting pipe (13). After being bent, both ends of the second regulating plate (23) also extend towards the front of the water tank (1), so that the top part of the second regulating plate (23) extends to the bottom of the extension pipe (16) of the return pipe (14), and the bottom part of the second regulating plate (23) extends to the bottom of the extension pipe (16) of the return pipe (15).

5. The automatic water meter detection device according to claim 1, characterized in that, Both the upper parts of the water meter connecting pipe one (12) and the water meter connecting pipe two (13) are connected to an extension pipe (16). The lower parts of the first return pipe (14) and the second return pipe (15) are also connected to extension pipes (16).

6. The automatic water meter detection device according to claim 1, characterized in that, The extension pipe (16) has a channel inside that is connected to the corresponding water meter connection pipe one (12), water meter connection pipe two (13), return pipe one (14) and return pipe two (15); The closure (3) is located within the channel of the extension tube (16); The closure (3) can extend and retract outward within the channel of the extension pipe (16) to block the flow state inside the water meter connection pipe one (12), water meter connection pipe two (13), return pipe one (14) and return pipe two (15).

7. The automatic water meter detection device according to claim 1, characterized in that, The closure (3) is designed as a cylindrical structure, and the outside of the closure (3) is made of silicone material. The shape of the closure (3) matches the internal shape of the extension tube (16). Among them, the bottom shape of the closure (3) located on the water meter connecting pipe one (12) and the water meter connecting pipe two (13) matches the internal shape of the corresponding water meter connecting pipe one (12) and the water meter connecting pipe two (13); The top shape of the closure (3) located on the first reflux tube (14) and the second reflux tube (15) matches the internal shape of the first reflux tube (14) and the second reflux tube (15).

8. The automatic water meter detection device according to claim 4, characterized in that, The extension ends of the adjustment plate (22) after bending are provided with a vertical insertion rod (31). The bottom end of the insertion rod (31) is fixedly connected to the top end of the corresponding closure (3) on the water meter connecting pipe (12) and the water meter connecting pipe (13). The top end of the first insertion rod (31) extends upward from the bottom end of the extension end of the first adjustment plate (22) after bending, and the top end of the first insertion rod (31) and the corresponding extension end of the first adjustment plate (22) after bending are in a sliding fit.

9. The automatic water meter detection device according to claim 4, characterized in that, The two ends of the adjustment plate 2 (23) are vertically arranged with the extension ends after bending. The top end of the insertion rod 2 (32) is fixedly connected to the bottom end of the corresponding closure part (3) on the return pipe 1 (14) and the return pipe 2 (15). The bottom end of the second insertion rod 32 extends downward from the bottom end of the extension end of the second adjustment plate (23) after bending, and the bottom end of the second insertion rod (32) and the corresponding extension end of the second adjustment plate (23) after bending are in a sliding fit.

10. A water meter-based automatic detection device according to claim 8 or 9, characterized in that, Springs (33) are provided on both the first (31) and the second (32) of the insertion rod. The springs (33) are respectively sleeved on the corresponding first (31) and second (32) of the insertion rod. Under the thrust of the two ends of the springs (33), a pushing force can be applied between the corresponding closing member (3) and the bending extension of the corresponding adjustment plate first (22) and adjustment plate second (23).

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