Full-automatic ultrasonic water meter calibration device

Abstract

The invention belongs to the technical field of water meter calibration devices, and discloses a full-automatic ultrasonic water meter calibration device which comprises a calibration table, a computer control system and a water meter body, the computer control system is fixedly installed at the top end of the calibration table, and the water meter body is arranged on one side of the computer control system. The two ends of the water meter body are connected with a water inlet pipe and a water outlet pipe through flanges respectively, a gas collection assembly is arranged at the top of the water inlet pipe, and a filtering assembly is arranged in the water inlet pipe. When water flow mixed with bubbles flows through the arc-shaped protruding part of the water inlet pipe, the water flow can be subjected to the centrifugal force effect, the bubbles with small density can be concentrated towards the arc-shaped top under the centrifugal force effect and finally converge into the gas storage pipe, and the water with the bubbles separated flows out of the lower portion of the gas storage pipe and continues to flow to the water meter to be detected. Bubbles in water are separated in the mode, so that interference of the bubbles in the water on a normal propagation path of an ultrasonic beam is reduced as much as possible, and the accuracy of the device on a water meter verification result is ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water meter calibration devices, and specifically relates to a full-automatic ultrasonic water meter calibration device. BACKGROUND

[0002] The full-automatic ultrasonic water meter calibration device is a special equipment for accurately detecting, calibrating and verifying the metering performance of an ultrasonic water meter, and realizes high-precision and high-efficiency flow measurement and data analysis through automation technology. The core purpose is to ensure that the ultrasonic water meter can accurately and stably measure water consumption in actual application, and meet industrial, civil and legal metering requirements.

[0003] In the calibration process, when water flows through the system and the inside of the water meter, tiny air bubbles are easily generated and mixed. When the air bubbles flow through the ultrasonic transducer measurement area of the water meter, they will seriously interfere with the normal propagation path of the ultrasonic beam, causing the signal strength obtained by the receiving transducer to be sharply weakened, the waveform to be distorted, or even completely lost, so that the measurement system cannot extract effective timing signals, thereby affecting the accuracy of the calibration result. SUMMARY

[0004] The purpose of the present application is to provide a full-automatic ultrasonic water meter calibration device to solve the problems raised in the background.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a full-automatic ultrasonic water meter calibration device, comprising a calibration table, a computer control system and a water meter main body, the computer control system is fixedly installed at the top end of the calibration table, the water meter main body is arranged on one side of the computer control system, the two ends of the water meter main body are respectively connected with a water inlet pipe and a water outlet pipe through flanges, the top of the water inlet pipe is provided with a gas collecting assembly, and the inside of the water inlet pipe is provided with a filtering assembly.

[0006] The gas collecting assembly comprises a gas storage pipe fixedly installed at the top of the water inlet pipe, and the water inlet pipe and the gas storage pipe are in communication with the inner cavities thereof.

[0007] The middle part of the water inlet pipe is in an arc convex shape, the gas storage pipe is arranged at the top end of the arc convex part, and the inside of the gas storage pipe is provided with an automatic exhaust assembly.

[0008] As a further technical scheme of the present application, the automatic exhaust assembly comprises a floating ball arranged in the inside of the gas storage pipe, a limiting rod is slidably installed on the inner wall of the floating ball, a sliding groove is formed in the outer wall of the limiting rod, a sliding block is slidably installed on the inner wall of the sliding groove, and the sliding block is fixedly installed in the inside of the floating ball.

[0009] The top of the limiting rod is hollow, and a plurality of exhaust holes are uniformly arranged in an annular array on the outer wall of the limiting rod, one side of the exhaust hole is provided with a control pipe, the control pipe is slidingly installed in the limiting rod, the top end of the limiting rod is fixedly connected with an exhaust pipe, one end of the exhaust pipe away from the limiting rod is provided with a slag collecting box, the slag collecting box is fixedly installed on the outer wall of the water inlet pipe, and the slag collecting box is provided with a slag blowing assembly in the inside.

[0010] The bottom of the chute is slidingly installed with a guide plate, the top end of the guide plate is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the control pipe.

[0011] As a further technical solution of the application, a first spring is arranged between the control pipe and the limiting rod.

[0012] As a further technical solution of the application, the filter assembly comprises a filter screen fixedly installed in the water inlet pipe, and a slag cleaning assembly is arranged on the outer wall of the filter screen.

[0013] As a further technical solution of the application, the slag cleaning assembly comprises a slag cleaning plate arranged on the outer wall of the filter screen, an opening part is formed on the side of the slag cleaning plate facing the filter screen, a mounting ring is fixedly installed on the outer wall of the slag cleaning plate, and the mounting ring is rotatably installed in the water inlet pipe.

[0014] The outer wall of the slag cleaning plate is fixedly connected with a first rotating shaft, a water wheel blade is fixedly installed on one end of the first rotating shaft away from the slag cleaning plate, and a slag discharging assembly is arranged in the inside of the slag cleaning plate.

[0015] As a further technical solution of the application, the slag discharging assembly comprises a conveying auger rotatably installed in the inside of the slag cleaning plate, a second rotating shaft is fixedly connected with the inner wall of the conveying auger, a first gear is fixedly installed on one end of the second rotating shaft, an annular gear rack is engagedly connected on one side of the first gear, and the annular gear rack is fixedly installed on the inner wall of the water inlet pipe.

[0016] One end of the slag cleaning plate is fixedly connected with a slag discharging pipe, a protective ring is fixedly installed on the outer wall of the slag discharging pipe, and the protective ring is fixedly installed in the inside of the mounting ring.

[0017] One end of the slag discharging pipe away from the slag cleaning plate is provided with a slag discharging port, the slag discharging port is formed on one side of the slag collecting box, and a slag collecting box is slidingly installed in the inside of the slag collecting box.

[0018] As a further technical solution of the application, the slag blowing assembly comprises an air bag installed in the inside of the slag collecting box, a pressing plate is arranged on the top of the air bag, a connecting pipe is embedded in the inside of the air bag, and the top of the connecting pipe is fixedly connected with the exhaust pipe.

[0019] The bottom end of the air bag is uniformly provided with a second through hole, and the bottom of the second through hole is uniformly provided with a blowing pipe;

[0020] A control plate is arranged between the second through hole and the blowing pipe, the inner wall of the control plate is uniformly provided with a first through hole, both ends of the control plate are fixedly connected with connecting plates, and the top of the two connecting plates is fixedly installed with wedge blocks.

[0021] As a further technical solution of the present application, the two wedge blocks are symmetrically arranged with one high and one low.

[0022] As a further technical solution of the present application, the pressing plate is slidingly installed in the inside of the slag collecting box, and the top end of the pressing plate is provided with a second spring.

[0023] As a further technical solution of the present application, the bottom of the control plate is fixedly connected with a rack plate, the bottom end of the rack plate is engagedly connected with a second gear, the inside of the second gear is fixedly installed with a threaded rod, the outer wall of the threaded rod is threadedly connected with a baffle plate, and the baffle plate is arranged on one side of the slag discharge port.

[0024] The beneficial effects of the present application are as follows:

[0025] 1、Through the setting of the air collecting assembly, when the water flow mixed with air bubbles flows through the arc-shaped protruding portion of the water inlet pipe, the water flow will be affected by the centrifugal force, the air bubbles with smaller density will be concentrated to the top of the arc under the action of the centrifugal force, and finally collected in the air storage pipe, the air bubbles slowly float to the top for storage in the air storage pipe, and the "purified" water flows out from the lower part of the air storage pipe and continues to flow to the water meter to reduce the interference of the air bubbles in the water on the normal propagation path of the ultrasonic beam as much as possible, so that the accuracy of the verification result of the device on the water meter is ensured.

[0026] 2、Through the setting of the automatic air exhaust assembly, when a large amount of gas is stored in the air storage pipe and the floating ball moves to the bottom of the limiting rod, the sliding block presses the guide plate downward, the guide plate moves downward to drive the control pipe to move downward through the connecting rod, the air exhaust hole is exposed, the gas in the air storage pipe enters the limiting rod through the air exhaust hole and is discharged into the slag collecting box through the air exhaust pipe and finally discharged from the device, so that the device can automatically exhaust air, prevent the excessive gas from forming "air block" to hinder the water flow, and thus affect the ultrasonic water meter verification, and the automatic air exhaust can ensure the continuity and stability of the water meter verification.

[0027] 3、Through the setting of the filtering assembly, when the water flow flows through the filter screen, the impurities in the water are intercepted by the filter screen to avoid the interference of the impurities on the flow measurement, so that the water flow entering the water meter main body remains relatively pure, the flow of the water meter can be accurately measured during the verification process, and reliable verification data can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1The whole structure schematic diagram of the present application;

[0029] Figure 2 The first view structure sectional schematic diagram of the water inlet pipe of the present application;

[0030] Figure 3 The whole structure schematic diagram of the present application; Figure 2 The structure enlarged schematic diagram of A in the present application;

[0031] Figure 4 The structure sectional schematic diagram of the floating ball and the limiting rod of the present application;

[0032] Figure 5 The structure sectional schematic diagram of the slag collecting box of the present application;

[0033] Figure 6 The second view structure sectional schematic diagram of the water inlet pipe of the present application;

[0034] Figure 7 The structure enlarged schematic diagram of B in the present application; Figure 6

[0035] Figure 8 The structure schematic diagram of the control plate and the baffle of the present application;

[0036] Figure 9 The first view structure schematic diagram of the slag removing plate of the present application;

[0037] Figure 10 The second view structure schematic diagram of the slag removing plate of the present application;

[0038] Figure 11 The second view structure sectional schematic diagram of the slag removing plate of the present application.

[0039] In the figure: 1, calibration table; 2, computer control system; 3, water meter main body; 4, water inlet pipe; 5, water outlet pipe; 6, gas storage pipe; 7, floating ball; 8, limiting rod; 9, sliding block; 10, sliding groove; 11, guide plate; 12, connecting rod; 13, control pipe; 14, exhaust hole; 15, exhaust pipe; 16, slag collecting box; 17, first spring; 18, filter screen; 19, water wheel blade; 20, first rotating shaft; 21, slag removing plate; 22, mounting ring; 23, opening part; 24, conveying auger; 25, second rotating shaft; 26, first gear; 27, annular rack; 28, protection ring; 29, slag discharging pipe; 30, slag discharging opening; 31, slag collecting box; 32, connecting pipe; 33, air bag; 34, air blowing pipe; 35, control plate; 36, first through hole; 37, connecting plate; 38, wedge block; 39, pressing plate; 40, second spring; 41, baffle; 42, threaded rod; 43, second gear; 44, rack plate; 45, second through hole. DETAILED DESCRIPTION

[0040] ​The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] like Figures 1 to 11 As shown in the embodiment of the present invention, a fully automatic ultrasonic water meter calibration device includes a calibration platform 1, a computer control system 2, and a water meter body 3. The computer control system 2 is fixedly installed on the top of the calibration platform 1, and the water meter body 3 is set on one side of the computer control system 2. The two ends of the water meter body 3 are respectively connected to an inlet pipe 4 and an outlet pipe 5 through flanges. An air collection component is provided on the top of the inlet pipe 4, and a filter component is provided inside the inlet pipe 4.

[0042] The gas collection assembly includes a gas storage pipe 6 fixedly installed at the top of the water inlet pipe 4, and the water inlet pipe 4 is connected to the inner cavity of the gas storage pipe 6;

[0043] The middle part of the water inlet pipe 4 is an arc-shaped protrusion, and the air storage pipe 6 is located at the top of the arc-shaped protrusion. An automatic exhaust component is installed inside the air storage pipe 6.

[0044] An inlet solenoid valve is installed at the end of the inlet pipe 4 away from the water meter body 3, and an electromagnetic flow meter is installed at the end of the outlet pipe 5 away from the water meter body 3. A laser sensor is also installed on the side of the computer control system 2 facing the water meter body 3.

[0045] During operation, the flow rate is adjusted to the preset value by controlling the electric flow regulating valve according to the current data of the electromagnetic flow meter. The pulse count value of the water meter to be calibrated is compared with the high-precision weighing cylinder by the laser sensor to verify the water meter error. After the verification is completed, the computer control system 2 saves the error data and controls the water inlet solenoid valve to close.

[0046] The existing patent CN105606182B discloses a fully automatic unattended serial water meter calibration device. This patent discloses the calibration table 1, computer control system 2, water meter body 3 and installation method of water meter body 3, specific calibration method of water meter body 3 and related devices proposed in this application. The technical means will not be described in detail here.

[0047] When the water containing air bubbles flows through the arc-shaped protrusion of the inlet pipe 4, the water will be subjected to centrifugal force. The air bubbles with lower density will concentrate towards the top of the arc under the action of centrifugal force, and eventually gather into the air storage pipe 6. The air bubbles slowly float to the top of the air storage pipe 6 for storage, while the "purified" water flows out from the bottom of the air storage pipe 6 and continues to flow to the water meter being tested.

[0048] The device separates the gas bubbles in the water in the above manner to reduce the interference of the gas bubbles in the water on the normal propagation path of the ultrasonic beam as much as possible, thereby ensuring the accuracy of the device on the water meter verification result.

[0049] As shown in Figures 1 to 4 The automatic exhaust assembly includes a floating ball 7 arranged inside the gas storage pipe 6, the inner wall of the floating ball 7 is slidingly installed with a limiting rod 8, the outer wall of the limiting rod 8 is provided with a sliding groove 10, the inner wall of the sliding groove 10 is slidingly installed with a sliding block 9, and the sliding block 9 is fixedly installed inside the floating ball 7.

[0050] The top of the limiting rod 8 is hollow, the outer wall of the limiting rod 8 is uniformly provided with exhaust holes 14 in an annular array, one side of the exhaust holes 14 is provided with a control pipe 13, the control pipe 13 is slidingly installed inside the limiting rod 8, the top end of the limiting rod 8 is fixedly connected with an exhaust pipe 15, one end of the exhaust pipe 15 away from the limiting rod 8 is installed with a slag collecting box 16, the slag collecting box 16 is fixedly installed on the outer wall of the water inlet pipe 4, and the inside of the slag collecting box 16 is provided with a slag blowing assembly.

[0051] The bottom of the sliding groove 10 is slidingly installed with a guide plate 11, the top end of the guide plate 11 is fixedly connected with a connecting rod 12, and the connecting rod 12 is fixedly connected with the control pipe 13.

[0052] There is a gap between the outer wall of the floating ball 7 and the inside of the gas storage pipe 6 for gas to pass through;

[0053] During operation, since the lower part of the gas storage pipe 6 is directly communicated with the water inlet pipe 4, the lower part of the gas storage pipe 6 is filled with water, and the upper part of the gas storage pipe 6 forms a water area. With the water flow, the gas bubbles escaping from the water and floating upward will gather at the top of the gas storage pipe 6, and the upper part of the gas storage pipe 6 forms a gas cavity. Between the gas cavity and the water area, there is a clear and constantly fluctuating gas-liquid interface, and the floating ball 7 floats on the liquid surface by the buoyancy of the water;

[0054] The water mixed with gas bubbles flows from the water inlet pipe 4, the gas bubbles enter the water area of the gas storage pipe 6 under the action of buoyancy and continue to float upward, the gas bubbles pass through the gas-liquid interface and enter the gas cavity at the top, so that the volume of the gas cavity gradually increases and the volume of the lower water area decreases. The gas-liquid interface gradually decreases, and the floating ball 7 descends with the water level, and the movement of the floating ball 7 drives the sliding block 9 to slide downward in the sliding groove 10.

[0055] When a large amount of gas is stored in the gas storage pipe 6 and the floating ball 7 moves to the bottom of the limiting rod 8, the sliding block 9 will press the guide plate 11 downward, and when the guide plate 11 moves downward, the control pipe 13 will be driven to move downward through the connecting rod 12, so that the exhaust holes 14 are exposed, the gas in the gas storage pipe 6 enters the limiting rod 8 through the exhaust holes 14, and is finally discharged from the device through the exhaust pipe 15, so that the device is automatically exhausted, preventing excessive gas from forming "air block" and hindering the water flow, thereby affecting the ultrasonic water meter verification. The automatic exhaust can ensure the continuity and stability of the water meter verification.

[0056] As shown in Figure 4 , the control pipe 13 is provided with a first spring 17 between the limiting rod 8.

[0057] The elastic potential energy of the first spring 17 makes the control pipe 13 always have an upward trend, so that the control pipe 13 closes the exhaust hole 14;

[0058] The top of the control pipe 13 is provided with a limiting block which is fixedly installed on the inner wall of the limiting rod 8, and the highest position of the control pipe 13 is limited by the limiting block to ensure the stability of the control pipe 13 to block the exhaust hole 14;

[0059] When the control pipe 13 moves downward to open the exhaust hole 14 for exhaust, the first spring 17 is deformed to store elastic potential energy, and the elastic potential energy is released by the first spring 17 after exhaust to prevent water leakage and ensure that the subsequent verification continues.

[0060] The two ends of the first spring 17 are provided with dampers to slow down the resetting speed of the first spring 17, so that the gas in the gas storage pipe 6 can be discharged as much as possible.

[0061] As shown in Figure 2 and Figure 6 , the filter assembly includes a filter screen 18 fixedly installed inside the water inlet pipe 4, and the outer wall of the filter screen 18 is provided with a slag cleaning assembly.

[0062] When the water flow passes through the filter screen 18, the impurities in the water are intercepted by the filter screen 18 to avoid interference with the flow measurement, so that the water flow entering the water meter main body 3 remains relatively pure, ensuring that the water meter can accurately measure the flow during the verification process and obtain reliable verification data.

[0063] As shown in Figure 2 and Figure 6 , the slag cleaning assembly includes a slag cleaning plate 21 provided on the outer wall of the filter screen 18, the side of the slag cleaning plate 21 facing the filter screen 18 is provided with an opening portion 23, and the outer wall of the slag cleaning plate 21 is fixedly installed with a mounting ring 22 which is rotatably installed inside the water inlet pipe 4.

[0064] The outer wall of the slag cleaning plate 21 is fixedly connected with a first rotating shaft 20, one end of the first rotating shaft 20 away from the slag cleaning plate 21 is fixedly installed with a water wheel blade 19, and the inside of the slag cleaning plate 21 is provided with a slag discharging assembly.

[0065] During operation, the water flow drives the water wheel blade 19 to rotate, the water wheel blade 19 rotates to drive the slag cleaning plate 21 to rotate through the first rotating shaft 20, and the slag cleaning plate 21 scrapes off the impurities attached to the surface of the filter screen 18 during rotation on the surface of the filter screen 18, thereby self-cleaning and ensuring uninterrupted verification.

[0066] AsFigure 5 、 Figure 6 、 Figure 7 、 Figure 9 and Figure 11 As shown in

[0067] One end of the slag removal plate 21 is fixedly connected with a slag removal pipe 29, and the outer wall of the slag removal pipe 29 is fixedly installed with a protective ring 28, which is fixedly installed inside the mounting ring 22.

[0068] The end of the slag removal pipe 29 away from the slag removal plate 21 is provided with a slag removal port 30, which is opened on one side of the slag collecting box 16, and the slag collecting box 16 is slidably installed with a slag collecting box 31 inside.

[0069] The annular rack 27 is rotatably installed between the mounting ring 22 and the protective ring 28, and the protective ring 28 and the mounting ring 22 have a cavity for accommodating the rotation of the first gear 26.

[0070] When the slag removal plate 21 rotates, the first gear 26 meshes with the annular rack 27 to rotate, and the rotation of the first gear 26 drives the rotation of the second rotating shaft 25, and the rotation of the second rotating shaft 25 drives the rotation of the conveying auger 24, which transports the impurities inside the slag removal plate 21 to one side of the slag removal pipe 29.

[0071] When the slag removal pipe 29 rotates to one side of the slag removal port 30, the impurities inside the slag removal plate 21 are discharged from the slag removal pipe 29 into the slag removal port 30, and are finally guided to fall into the slag collecting box 31 inside through the slag removal port 30. Not only can it avoid the formation of "secondary pollution source" by accumulating impurities on the surface of the filter screen 18, but also can prevent the impurities from blocking the filter screen 18, and the flow fluctuation affects the stability of the inspection system. The problem can dynamically maintain the permeability of the filter screen 18, keep the flow constant, reduce the inspection error caused by the change of flow rate, and thus ensure the accuracy of the inspection result.

[0072] The slag removal port 30 is arranged in the lower half of the mounting ring 22, and is arranged obliquely from the mounting ring 22 to one side of the slag collecting box 16, which helps to improve the slag removal effect.

[0073] As shown in Figure 5 、 Figure 6 and Figure 7 The slag blowing assembly includes a gas bag 33 installed inside the slag collecting box 16, and the top of the gas bag 33 is provided with a pressing plate 39, and the inside of the gas bag 33 is embedded with a connecting pipe 32, and the top of the connecting pipe 32 is fixedly connected with the exhaust pipe 15.

[0074] The bottom end of the air bag 33 is uniformly provided with a second through hole 45, and the bottom of the second through hole 45 is uniformly provided with a blowing pipe 34;

[0075] The control plate 35 is arranged between the second through hole 45 and the blowing pipe 34, the inner wall of the control plate 35 is uniformly provided with a first through hole 36, and the two ends of the control plate 35 are fixedly connected with connecting plates 37, and the top of the two connecting plates 37 is fixedly installed with wedge blocks 38.

[0076] The bottom of the air bag 33 is fixedly connected with the inner wall of the slag collecting box 16;

[0077] The outer wall of the exhaust pipe 15 and the blowing pipe 34 is installed with a one-way valve to control the flow direction of the gas;

[0078] The connecting pipe 32 is sealingly and slidingly connected with the air bag 33;

[0079] When the gas is exhausted, the gas enters the connecting pipe 32 through the exhaust pipe 15, is guided into the inside of the air bag 33 through the connecting pipe 32, the air bag 33 stores the gas to expand to drive the pressing plate 39 to move upwards, when the pressing plate 39 moves to the bottom of the wedge block 38, the pressing plate 39 continues to move upwards to force the wedge block 38 to slide into the inside of the slag collecting box 16, the movement of the wedge block 38 drives the movement of the connecting plate 37, the movement of the connecting plate 37 drives the movement of the control plate 35, so that the first through hole 36 coincides with the second through hole 45 and the blowing pipe 34, the gas in the connecting pipe 32 is exhausted, and is blown to the bottom of the slag collecting box 16 and one side of the slag collecting box 31 through the blowing pipe 34, which can prevent the accumulation of impurities and can prevent the inside of the slag collecting box 16 from being full of impurities, and is helpful to improve the continuity of the ultrasonic water meter calibration.

[0080] The bottom of the blowing pipe 34 is obliquely arranged to one side, which is helpful to blow the impurities outward.

[0081] As shown in Figure 6 , Figure 7 and Figure 8 , the two wedge blocks 38 are symmetrically arranged high and low.

[0082] When the air bag 33 is inflated, the pressing plate 39 moves upwards and contacts the wedge block 38 at the high position to open the second through hole 45 to blow;

[0083] When the air bag 33 is exhausted, the pressing plate 39 moves downwards, when the air bag 33 is about to end the exhaust, the pressing plate 39 moves to one end of the wedge block 38 at the low position, forcing it to slide into the inside of the slag collecting box 16, and the control plate 35 is driven to move, so that the first through hole 36 is dislocated with the second through hole 45 and the blowing pipe 34, and the exhaust passage is closed.

[0084] As shown in Figure 5 , Figure 6 and Figure 7As shown, the pressing plate 39 is slidingly installed inside the slag collecting box 16, and the top end of the pressing plate 39 is provided with a second spring 40.

[0085] The pressing plate 39 always has a downward tendency by the elastic potential energy of the second spring 40, and when the air bag 33 is inflated, the pressing plate 39 moves upward to compress the second spring 40 to store the elastic potential energy;

[0086] When the air is exhausted, the elastic potential energy of the second spring 40 is released to assist the air bag 33 to exhaust, improve the exhaust pressure, and thus blow away the impurities.

[0087] As shown, Figure 8 The bottom of the control plate 35 is fixedly connected with a rack plate 44, the bottom end of the rack plate 44 is meshingly connected with a second gear 43, the inside of the second gear 43 is fixedly installed with a threaded rod 42, the outer wall of the threaded rod 42 is threadedly connected with a baffle plate 41, and the baffle plate 41 is arranged on one side of the slag discharge port 30.

[0088] When the air is exhausted, the movement of the control plate 35 drives the movement of the rack plate 44, the movement of the rack plate 44 drives the rotation of the second gear 43, the rotation of the second gear 43 drives the rotation of the threaded rod 42, and the rotation of the threaded rod 42 drives the movement of the baffle plate 41, so that the baffle plate 41 closes the slag discharge port 30 to ensure the stability of the device operation.

[0089] Working principle and use process:

[0090] When working, the water flow is introduced into the water inlet pipe 4 by opening the water inlet electromagnetic valve, and the water flow first contacts the filter screen 18 to filter the impurities in the water;

[0091] At the same time, the water flow drives the water wheel blade 19 to rotate, and the rotation of the water wheel blade 19 drives the rotation of the slag cleaning plate 21 through the first rotating shaft 20, and in the process of rotating on the surface of the filter screen 18, the slag cleaning plate 21 scrapes off the impurities attached to the surface of the filter screen 18;

[0092] When the slag cleaning plate 21 rotates, the first gear 26 meshes with the annular rack 27 to rotate, the rotation of the first gear 26 drives the rotation of the second rotating shaft 25, and the rotation of the second rotating shaft 25 drives the rotation of the conveying auger 24 to transport the impurities in the slag cleaning plate 21 to one side of the slag discharge pipe 29. When the slag discharge pipe 29 rotates to one side of the slag discharge port 30, the impurities in the slag cleaning plate 21 are discharged from the slag discharge pipe 29 to the slag discharge port 30, and then guided to finally fall into the slag collecting box 31 for collection.

[0093] When the water flow mixed with bubbles flows through the arc convex part of the water inlet pipe 4, the water flow will be affected by the centrifugal force, and the bubbles with smaller density will concentrate to the top of the arc under the action of the centrifugal force, and finally gather in the gas storage pipe 6. The "purified" water flows out from the lower part of the gas storage pipe 6 and continues to flow to the water meter to be tested;

[0094] When a large amount of gas is stored in the gas storage pipe 6 and the floating ball 7 moves to the bottom of the limiting rod 8, the sliding block 9 will press the guide plate 11 downward, and the guide plate 11 will move downward through the connecting rod 12 to drive the control pipe 13 to move downward, so that the exhaust hole 14 is exposed. The gas in the gas storage pipe 6 enters the limiting rod 8 through the exhaust hole 14 and is discharged into the slag collecting box 16 through the exhaust pipe 15 and finally discharged from the device, so that the device automatically discharges gas;

[0095] When the control pipe 13 moves downward to open the exhaust hole 14 for exhaust, the first spring 17 is deformed to store elastic potential energy, and after exhaust, the first spring 17 releases the elastic potential energy to reset, preventing water leakage to ensure that the subsequent verification continues;

[0096] When the gas is discharged, the gas enters the connecting pipe 32 through the exhaust pipe 15, is guided into the inside of the air bag 33 through the connecting pipe 32, and the air bag 33 stores the gas to expand and drive the pressing plate 39 to move upward. When the pressing plate 39 moves to the bottom of the wedge block 38, the pressing plate 39 continues to move upward to force the wedge block 38 to slide into the inside of the slag collecting box 16. The movement of the wedge block 38 drives the movement of the connecting plate 37, the movement of the connecting plate 37 drives the movement of the control plate 35, the movement of the control plate 35 drives the movement of the rack plate 44, the movement of the rack plate 44 drives the rotation of the second gear 43, the rotation of the second gear 43 drives the rotation of the threaded rod 42, and the rotation of the threaded rod 42 drives the movement of the baffle plate 41, so that the baffle plate 41 closes the slag discharge port 30;

[0097] The movement of the control plate 35 makes the first through hole 36 coincide with the second through hole 45 and the air blowing pipe 34, the gas in the connecting pipe 32 is discharged, and is blown to the bottom of the slag collecting box 16 and one side of the slag collecting box 31 through the air blowing pipe 34, which can prevent impurities from accumulating and can prevent the inside of the slag collecting box 16 from being filled with impurities;

[0098] When the gas is discharged, the second spring 40 releases the elastic potential energy to assist the air bag 33 in discharging gas. When the air bag 33 is about to end the discharging, the pressing plate 39 moves downward to the low end of the wedge block 38, forcing it to slide into the inside of the slag collecting box 16. Similarly, the movement of the control plate 35 makes the first through hole 36 dislocate with the second through hole 45 and the air blowing pipe 34, so as to close the exhaust passage. Similarly, the baffle plate 41 moves away from one side of the slag discharge port 30 to open it;

[0099] In operation, the flow is adjusted to the preset value by controlling the electric flow regulating valve according to the current data of the electromagnetic flowmeter, and the error of the water meter is checked by comparing the pulse count value of the water meter to be checked with the high-precision weighing cylinder by the laser sensor. After the checking is completed, the computer control system 2 saves the error data and controls the water inlet electromagnetic valve to be closed.

[0100] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A fully automatic ultrasonic water meter calibration device, comprising a calibration platform (1), a computer control system (2), and a water meter body (3), characterized in that: The computer control system (2) is fixedly installed on the top of the calibration platform (1). The water meter body (3) is set on one side of the computer control system (2). The two ends of the water meter body (3) are respectively connected to the inlet pipe (4) and the outlet pipe (5) through flanges. The top of the inlet pipe (4) is provided with an air collection component, and the inside of the inlet pipe (4) is provided with a filter component. The gas collection assembly includes a gas storage pipe (6) fixedly installed on the top of the water inlet pipe (4), and the water inlet pipe (4) is connected to the inner cavity of the gas storage pipe (6); The middle part of the water inlet pipe (4) is arc-shaped protrusion, and the gas storage pipe (6) is located at the top of the arc-shaped protrusion. An automatic exhaust component is installed inside the gas storage pipe (6).

2. The fully automatic ultrasonic water meter calibration device according to claim 1, characterized in that: The automatic exhaust assembly includes a float (7) disposed inside the air storage pipe (6). A limit rod (8) is slidably installed on the inner wall of the float (7). A groove (10) is provided on the outer wall of the limit rod (8). A slider (9) is slidably installed on the inner wall of the groove (10). The slider (9) is fixedly installed inside the float (7). The top of the limiting rod (8) is hollow, and its outer wall is evenly provided with exhaust holes (14) in a ring array. A control pipe (13) is provided on one side of the exhaust hole (14). The control pipe (13) is slidably installed inside the limiting rod (8). An exhaust pipe (15) is fixedly connected to the top of the limiting rod (8). A slag collection box (16) is installed at the end of the exhaust pipe (15) away from the limiting rod (8). The slag collection box (16) is fixedly installed on the outer wall of the water inlet pipe (4). A slag blowing assembly is provided inside the slag collection box (16). A guide plate (11) is slidably installed at the bottom of the chute (10), and a connecting rod (12) is fixedly connected to the top of the guide plate (11). The connecting rod (12) is fixedly connected to the control tube (13).

3. The fully automatic ultrasonic water meter calibration device according to claim 2, characterized in that: A first spring (17) is provided between the control tube (13) and the limit rod (8).

4. The fully automatic ultrasonic water meter calibration device according to claim 1, characterized in that: The filter assembly includes a filter screen (18) fixedly installed inside the water inlet pipe (4), and a sludge removal component is provided on the outer wall of the filter screen (18).

5. The fully automatic ultrasonic water meter calibration device according to claim 4, characterized in that: The slag removal assembly includes a slag removal plate (21) disposed on the outer wall of the filter screen (18). The slag removal plate (21) has an opening (23) on the side facing the filter screen (18). An installation ring (22) is fixedly installed on the outer wall of the slag removal plate (21). The installation ring (22) is rotatably installed inside the water inlet pipe (4). The outer wall of the slag cleaning plate (21) is fixedly connected to a first rotating shaft (20), and a water turbine blade (19) is fixedly installed at the end of the first rotating shaft (20) away from the slag cleaning plate (21). The interior of the slag cleaning plate (21) is provided with a slag discharge assembly.

6. The fully automatic ultrasonic water meter calibration device according to claim 5, characterized in that: The slag discharge assembly includes a conveying auger (24) rotatably installed inside the slag cleaning plate (21). A second rotating shaft (25) is fixedly connected to the inner wall of the conveying auger (24). A first gear (26) is fixedly installed at one end of the second rotating shaft (25). A ring rack (27) is meshed on one side of the first gear (26). The ring rack (27) is fixedly installed on the inner wall of the water inlet pipe (4). One end of the slag removal plate (21) is fixedly connected to a slag discharge pipe (29), and a protective ring (28) is fixedly installed on the outer wall of the slag discharge pipe (29). The protective ring (28) is fixedly installed inside the mounting ring (22). The slag discharge pipe (29) is provided with a slag discharge port (30) at one end away from the slag cleaning plate (21). The slag discharge port (30) is opened on one side of the slag collection box (16). The slag collection box (31) is slidably installed inside the slag collection box (16).

7. The fully automatic ultrasonic water meter calibration device according to claim 2, characterized in that: The slag blowing assembly includes an airbag (33) installed inside the slag collection box (16), a pressure plate (39) is provided on the top of the airbag (33), a connecting pipe (32) is embedded inside the airbag (33), and the top of the connecting pipe (32) is fixedly connected to the exhaust pipe (15). The bottom end of the airbag (33) is provided with a second through hole (45), and the bottom of the second through hole (45) is provided with an air blowing pipe (34). A control plate (35) is provided between the second through hole (45) and the air blowing pipe (34). The inner wall of the control plate (35) is evenly provided with first through holes (36). Both ends of the control plate (35) are fixedly connected to connecting plates (37). Wedges (38) are fixedly installed on the top of the two connecting plates (37).

8. The fully automatic ultrasonic water meter calibration device according to claim 7, characterized in that: The two wedges (38) are symmetrically arranged, one high and one low.

9. The fully automatic ultrasonic water meter calibration device according to claim 7, characterized in that: The pressure plate (39) is slidably installed inside the slag collection box (16), and a second spring (40) is provided at the top of the pressure plate (39).

10. The fully automatic ultrasonic water meter calibration device according to claim 7, characterized in that: The bottom of the control plate (35) is fixedly connected to a rack plate (44), and the bottom end of the rack plate (44) is meshed with a second gear (43). A threaded rod (42) is fixedly installed inside the second gear (43), and a baffle (41) is threadedly connected to the outer wall of the threaded rod (42). The baffle (41) is located on one side of the slag discharge port (30).

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