Series liquid filling operation table for wet-type water meters

Abstract

The invention relates to a wet-type water meter series connection liquid filling operation table which aims at solving the technical problems that liquid filling operation is inconvenient before an existing wet-type water meter leaves a factory, and particularly series connection and simultaneous liquid filling and rapid liquid filling operation are difficult. According to the key points, the middle of a second operation table of the operation table is hinged and fixed to one side of the top of a first operation table and arranged side by side and swings through a bottom ejector rod, a three-way valve at the joint of a vacuum pump and a vacuum barrel is connected with a vacuum pump valve at one end of a water outlet valve at the second operation table through a vacuumizing pipe, and the other end of the water outlet valve is provided with a switching valve; a water inlet valve is arranged at one end of the second operation table, and factory water meters are sequentially arranged on linear guide rails on the inner side of a rectangular frame of the second operation table in series through pipe connecting assemblies and are in sliding connection with the linear guide rails. In the liquid filling process, liquid enters the factory water meters connected in series in sequence through the water inlet valve, and after liquid filling is completed, the ejector rod drives the second operation table to swing to one side of the water inlet valve from the water outlet valve and then recover to the horizontal position.

Description

Technical Field

[0001] The invention relates to a water meter detection and calibration table, which is a wet type water meter series liquid filling operation table. Background Art

[0002] A water meter is an instrument used to measure water flow, mostly used for cumulative water flow measurement. It is generally divided into two categories: volumetric water meters and velocity water meters. The specifications of water meters usually consider the size and range of the flow used first, and then select the specification with the common flow closest to the value. After the new wet water meter is manufactured, it needs to be filled with liquid before leaving the factory, that is, a certain amount of water is injected to ensure the meter's accurate measurement and stable operation. This water will not affect the user's water use. This water will be stored in the water meter counter and gear system after the filling is completed. However, the existing technology and existing devices lack and are difficult to use for the pre-factory filling of wet water meters, especially it is difficult to fill in series at the same time, and to perform fast filling operations. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a wet water meter series filling operation table in the art, so as to solve the technical problems that the existing wet water meters are inconvenient to fill before leaving the factory, especially difficult to fill in series at the same time, and quick filling operation. The purpose is achieved through the following technical solutions.

[0004] A wet-type water meter series-connected liquid filling operation table, the key points of its structural design are that the bottom support feet of the first operation table of the operation table are fixed to the ground by expansion screws respectively, the top of the first operation table and the second operation table on one side of the top of the first operation table are rectangular respectively, the middle of the second operation table is hinged and fixed to one side of the top of the first operation table and arranged side by side, one end of the bottom of the second operation table is swung by a top rod, one end of the second operation table is provided with a water inlet valve, the water inlet of the water inlet valve is connected to the water inlet pipe through a pipeline, the other end of the second operation table is provided with a water outlet valve, the factory water meter is sequentially arranged in series on the linear guide rail inside the rectangular frame of the second operation table through a pipe connection assembly, and both sides of the pipe connection assembly The second operating table is wedged and fixed on the linear guide rails on both sides to slide; the factory water meters at the first and last ends of the second operating table are connected to the water outlet of the water inlet valve and the water inlet of the water outlet valve respectively, the water inlet valve is opened, the water outlet valve is closed, and after the water inlet is completed, the water inlet valve is closed, and the wrench switch is started. The liquid filling process enters the factory water meters in series from the water inlet valve in turn. After the liquid filling is completed, the push rod drives the second operating table to swing from the water outlet valve to the side of the water inlet valve, and the wrench switch is closed. After the second operating table is restored to the horizontal position, the switch valve of the water outlet valve is opened, and the water is discharged from the water outlet valve, and the factory water meters after filling are taken out in turn. After pouring out the remaining water, the filling operation in the factory water meter can be completed; the above-mentioned factory water meter is a wet water meter. The above-mentioned operating table can also be used for some water meters that need to be filled with water before leaving the factory.

[0005] A vacuum barrel and a vacuum pump are provided on the outside of the first operating table and the second operating table. The three-way valve at the connection between the vacuum pump and the vacuum barrel is connected to the vacuum pump valve at one end of the water outlet valve at the second operating table through a vacuum pipe. A switch valve is provided at the other end of the water outlet valve. The water outlet valve is L-shaped and 30-50 cm higher than one end of the second operating table. A rod-shaped liquid level observer is provided in the pipeline between the switch valve and the vacuum pump valve at the higher end of the water outlet valve. The above-mentioned liquid level observer is used to determine whether there are still bubbles in the water flow, and cooperate with the vacuum operation in the vacuum pipe to make one end of the water outlet valve tilted, so that the liquid flows in the reverse direction from the water inlet valve to the water outlet valve, thereby repeatedly filling the factory water meters connected in sequence; that is, when the factory water meters at the first and last ends of the second operating table are respectively connected to the water outlet of the water inlet valve and the water inlet of the water outlet valve, the water inlet valve is opened without closing the water outlet valve. After the water inlet is completed, the switch valve of the water inlet valve is closed, and the wrench switch is started. The filling process enters the factory water meters in series from the water inlet valve in sequence, and after the filling is completed, the top The rod drives the second operating table to swing from the water outlet valve to the side of the water inlet valve; at this time, the water outlet valve is evacuated by the vacuum pump and the vacuum barrel, and the liquid level and liquid level change of the liquid level observer of the water outlet valve are observed to determine whether the filling is completed; after the wrench switch is turned off and the second operating table is restored to the horizontal position, the vacuum pump and the vacuum barrel stop or close the vacuum treatment in the water outlet valve, the switch valve of the water outlet valve is opened, the water is discharged from the water outlet valve, and the factory water meters after filling are taken out in turn. After pouring out the remaining water, the filling operation in the factory water meters can be completed.

[0006] The first operating table is provided with a first pneumatic valve and a second pneumatic valve. The three-way valve at the connection between the vacuum pump and the vacuum barrel is connected to the first pneumatic valve and the second pneumatic valve in sequence through pipelines. The inlet and outlet holes of the first pneumatic valve are respectively connected to the inlet and outlet of the valve body of the water inlet valve, and the inlet and outlet holes of the second pneumatic valve are respectively connected to the inlet and outlet of the vacuum pump valve of the water outlet valve. The air pump pipe of the air pump is connected to the first pneumatic valve. A small control valve is provided at the water inlet of the water inlet valve, and the small control valve of the water inlet valve automatically opens when the vacuum reaches -0.1MPa. Thus, the opening and closing of the valve body at the water inlet valve is automatically controlled by the first pneumatic valve, and the opening and closing of the vacuum pump valve at the water outlet valve is automatically controlled by the second pneumatic valve, so as to automatically control the opening and closing of the vacuum pump and the vacuum barrel for the vacuum treatment in the water outlet valve, thereby improving the overall automated operation. It is only necessary to manually open the switch valve of the water outlet valve when the water is discharged from the water outlet valve.

[0007] The first operating table is provided with a third pneumatic valve, the ejector rod is an ejector rod cylinder, the three-way valve at the connection between the vacuum pump and the vacuum barrel is connected to the first pneumatic valve, the third pneumatic valve, and the second pneumatic valve in sequence through pipelines, and the inlet and outlet holes of the third pneumatic valve are respectively connected to the inlet and outlet of the ejector rod cylinder. Thus, the ejector rod cylinder is automatically controlled to extend and retract upward and downward through the third pneumatic valve, thereby further improving the overall automated operation.

[0008] 10-20 factory water meters are arranged in series on the linear guide rail of the second operating table through the pipe connection assembly, so as to facilitate the above-mentioned filling operation of multiple factory water meters at the same time.

[0009] The pipe connection assembly includes a joint bracket and a series pipe fitting. The T-shaped heads on both sides of the joint bracket of the pipe connection assembly are respectively provided with openings that are wedged and fixed to the linear guide rails on both sides of the second operating table. The series pipe fitting is fixed to the sleeve hole in the middle of the joint bracket by a locking nut or a locking screw. An annular groove is provided in the middle of the outer diameter of the series pipe fitting in the joint bracket at the locking and fixing place. The inner diameters of the two ends of the center hole of the series pipe fitting are respectively provided with internal threads. The external threads at the water inlet and outlet holes at both ends of the factory water meter are respectively connected with the internal threads of the corresponding series pipe fittings on both sides. The above is a specific structural embodiment of a pipe connection assembly, which can also adopt a pipe connection assembly in which pipe fittings are respectively connected in series in the orifices of the joint brackets at both ends, and the series pipe fittings at both ends are connected by a connecting pipe.

[0010] A support rod is provided at the bottom of the second operating platform where the second operating platform is hinged and fixed to the first operating platform, thereby enhancing the stability of one side of the second operating platform.

[0011] The linear guide rail of the second operating table is arranged on the upper inner side of the rectangular frame of the second operating table through the bottom frame protrusions arranged equidistantly. The above structure is convenient for improving the overall stability and observing the operation.

[0012] A clamp is provided at one end of the water inlet valve connected to the factory water meter. The water inlet valve and the water outlet valve are respectively wedged and fixed to the linear guide rails on both sides of the second operating table through the openings on both sides of the base, and a locking wrench is provided at the wedging position.

[0013] An infrared counting sensor and an infrared sensor are arranged on the outer side of the first operating table on the other symmetrical side of the push rod.

[0014] The invention has reasonable structural design, low production cost, convenient use, good stability and high liquid filling efficiency; it is suitable as a liquid filling operation table based on wet water meter series connection and structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention before use, in which arrows indicate the directions of water inlet and outlet, and the air inlet direction of the air pump.

[0016] Figure 2 yes Figure 1 Schematic diagram of the structure after swinging, the pipeline connection corresponding to the pneumatic valve is omitted in the figure, and the arrows indicate the reverse filling direction and the air intake direction of the air pump.

[0017] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure viewed from above on the straight track.

[0018] Figure 4 yes Figure 3 Schematic diagram of the structure looking down after the factory water meter is installed.

[0019] Figure 5 yes Figure 3 Schematic diagram of the exploded structure of the pipe connection component.

[0020] Serial numbers and names of the accompanying drawings: 1. First operating table, 2. Second operating table, 201. Linear guide rail, 2011. Base frame, 202. Support rod, 3. Water inlet valve, 4. Vacuum barrel, 5. Vacuum pump, 6. Water outlet valve, 601. Switch valve, 602. Liquid level observer, 603. Vacuum pump valve, 7. Push rod, 8. Wrench switch, 9. First pneumatic valve, 10. Second pneumatic valve, 11. Third pneumatic valve, 12. Pipe connection assembly, 1201. Connector bracket, 1202. Series pipe fittings, 1203. Locking nut, 13. Factory water meter. Implementation

[0021] Now, the structure of the present invention is further described in conjunction with the accompanying drawings. Figure 1-Figure 5As shown, the bottom supporting feet of the first operating table 1 of the operating table are fixed to the ground by expansion screws respectively, the top of the first operating table and the second operating table 2 on one side of the top of the first operating table are respectively rectangular, the middle of the second operating table is hinged and fixed to one side of the top of the first operating table and arranged side by side, a bracket support rod 202 is provided at the bottom of the second operating table where the second operating table is hinged and fixed to the first operating table, and one end of the bottom of the second operating table swings through a top rod 7, and a vacuum barrel 4 and a vacuum pump 5 are provided on the outside of the first operating table and the second operating table. The three-way valve at the connection between the vacuum pump and the vacuum barrel is connected to the vacuum pump valve 603 at one end of the water outlet valve 6 at the second operating table through a vacuum pipe, and a switch valve 601 is provided at the other end of the water outlet valve. The water outlet valve is L-shaped and is 30-50 cm higher than one end of the second operating table. A rod-shaped liquid level observer 602 is provided in the pipeline between the switch valve and the vacuum pump valve at the higher end of the water outlet valve. A water inlet valve 3 is provided at one end of the second operating table, and the water inlet of the water inlet valve is connected to the water inlet pipe through a pipeline. A water outlet valve 6 is provided at the other end of the second operating table. The factory water meter 13 is serially arranged on the linear guide rail 201 inside the rectangular frame of the second operating table through the pipe connection assembly 12. The linear guide rail of the second operating table is arranged on the upper side of the inner side of the rectangular frame of the second operating table through the protrusion of the base frame 2011 equidistantly arranged at the bottom; the above-mentioned factory water meter is a wet water meter. The two sides of the above-mentioned pipe connection assembly are wedged and fixed on the linear guide rails on both sides of the second operating table for sliding; the first operating table is provided with a first pneumatic valve 9, a second pneumatic valve 10 and a third pneumatic valve 11, and the three-way valve at the connection between the vacuum pump and the vacuum barrel is connected to the first pneumatic valve, the third pneumatic valve and the second pneumatic valve in sequence through pipelines, the inlet and outlet holes of the first pneumatic valve are respectively connected to the inlet and outlet of the valve body of the water inlet valve, and the inlet and outlet holes of the second pneumatic valve are respectively connected to the inlet and outlet of the vacuum pump valve of the water outlet valve; at the same time, the above-mentioned push rod is a push rod cylinder, the inlet and outlet holes of the third pneumatic valve are respectively connected to the inlet and outlet of the push rod cylinder, and the air pump pipe fittings of the air pump are connected to the first pneumatic valve; a small control valve is provided at the water inlet of the water inlet valve, and the small control valve of the water inlet valve automatically opens when the vacuum reaches -0.1MPa, and at the same time, the small control valve of the water inlet valve slowly enters water until the vacuum state is fully pumped. 10-20 factory water meters are arranged in series on the linear guide rail of the second operating table through a pipe connection assembly, and it is best to arrange 20 factory water meters in series.

[0022] According to the above structural characteristics, when the factory water meters at the first and last ends of the second operating table are respectively connected to the water outlet of the water inlet valve and the water inlet of the water outlet valve, the wrench switch is started, and the valve body of the water inlet valve is automatically opened through the first pneumatic valve, and there is no need to close the switch valve of the water outlet valve. After the water inlet is completed, the valve body of the water inlet valve is automatically closed through the first pneumatic valve. During the filling process, the liquid enters the factory water meters connected in series in sequence from the water inlet valve. After the filling is completed, the push rod at the third pneumatic valve drives the second operating table to swing from the water outlet valve to the side of the water inlet valve; at this time, the vacuum pump valve of the water outlet valve is opened through the second pneumatic valve, and the vacuum pump and the vacuum barrel perform vacuum treatment on the water outlet valve. Check whether there is liquid level and liquid level change on the liquid level observer of the water outlet valve to determine whether the filling is completed. At the same time, when the vacuum reaches -0.1MPa, the small control valve of the water inlet valve is automatically opened until water slowly enters and the vacuum state is fully pumped; turn off the wrench switch, and after the second operating table returns to the horizontal position, the vacuum pump valve of the water outlet valve is automatically closed through the second pneumatic valve, and the vacuum pump and vacuum barrel stop or close the vacuum treatment in the water outlet valve. The internal and external pressures are balanced, and the switch valve of the water outlet valve is manually opened to drain the water from the water outlet valve, and the factory water meters after filling are taken out in turn. After pouring out the remaining water, the filling operation in the factory water meter can be completed.

[0023] The above-mentioned pipe connection assembly includes a joint bracket 1201 and a series pipe fitting 1202. The T-shaped heads on both sides of the joint bracket of the pipe connection assembly are respectively provided with openings that are wedged and fixed to the linear guide rails on both sides of the second operating table. The series pipe fitting is fixed to the sleeve hole in the middle of the joint bracket by a locking nut 1203 or a locking screw. An annular groove is provided in the middle of the outer diameter of the series pipe fitting in the joint bracket at the locking and fixing place. The inner diameters of the two ends of the center hole of the series pipe fitting are respectively provided with internal threads. The external threads at the water inlet and outlet holes at both ends of the factory water meter are respectively connected with the internal threads of the corresponding series pipe fittings on both sides; U-shaped side grooves may be provided at the T-shaped heads on both sides of the above-mentioned joint bracket.

[0024] When in use, the factory water meter is placed in the middle of the linear guide rails on both sides of the second operating table, the factory water meter is rotated, and the pipe connection components on the linear rails on both sides of the factory water meter are slid. After the water inlet and outlet of the factory water meter are respectively connected through the series pipe fittings of the corresponding pipe connection components on both sides, the other factory water meters are connected in series in sequence according to the above. Then, the factory water meters at the head and tail ends of the second operating table are respectively connected to the water outlet valve and the water inlet valve, and the switch valve of the water outlet valve is opened. At this time, the wrench switch is started. After the second operating table swings, the wrench switch is turned off, and the second operating table returns to the horizontal position. The factory water meter can be filled with liquid. Finally, open the switch valve of the water outlet valve, first remove the water outlet valve and the water inlet valve of the head and tail factory water meters according to the above method, and then remove the factory water meters one by one according to the above method to complete the filling of the factory water meter.

[0025] According to the above structural features, further, in order to facilitate the use of the water inlet valve and the water outlet valve, a clamp is provided at one end of the water inlet valve connected to the factory water meter, and the water inlet valve and the water outlet valve are respectively fixed to the linear guide rails on both sides of the second operating table through the openings on both sides of the base, and a locking wrench is provided at the wedging position, that is, after the water inlet valve and the water outlet valve are moved into place, they are quickly connected or opened through the clamp, and the locking wrench is locked or loosened for movement. An infrared counting sensor and an infrared sensor are provided on the outer side of the first operating table on the other side of the symmetrical top rod, so that the infrared counting sensor and the infrared sensor respectively record whether the second operating table is swung into place and whether the number of swings is reached. At the same time, linear bearings may be provided at the openings on both sides of the pipe connection assembly, and the pipe connection assembly slides on the linear track through the linear bearings.

Claims

1. A wet water meter series filling operation table, characterized in that The bottom support feet of the first operating table (1) of the series filling operating table are fixed to the ground by expansion screws. The top of the first operating table and the second operating table (2) on one side of the top of the first operating table are rectangular. The middle of the second operating table is hinged and fixed to one side of the top of the first operating table and arranged side by side. The bottom end of the second operating table swings through a top rod (7). An inlet valve (3) is provided at one end of the second operating table. The water inlet of the inlet valve is connected to the water inlet pipe through a pipeline. An outlet valve (6) is provided at the other end of the second operating table. A factory water meter (13) is sequentially arranged in series on a linear guide rail (201) inside a rectangular frame of the second operating table through a pipe connection assembly (12). Both ends of the pipe connection assembly are connected to the inner side of the second operating table. The side wedging is fixed to slide on the linear guide rails on both sides of the second operating table; the factory water meters at the first and last ends of the second operating table are respectively connected to the water outlet of the water inlet valve and the water inlet of the water outlet valve, the water inlet valve is opened, the water outlet valve is closed, after the water inlet is completed, the water inlet valve is closed, the wrench switch (8) is started, and the liquid filling process enters the factory water meters in series from the water inlet valve in turn. After the liquid filling is completed, the push rod drives the second operating table to swing from the water outlet valve to the side of the water inlet valve, the wrench switch is closed, and after the second operating table is restored to the horizontal position, the switch valve (601) of the water outlet valve is opened, the water is discharged from the water outlet valve, and the factory water meters after the liquid filling are taken out in turn. After the remaining water is poured out, the liquid filling operation in the factory water meters can be completed; the above-mentioned factory water meters are wet water meters.

2. The wet water meter series filling operation table according to claim 1 is characterized in that A vacuum barrel (4) and a vacuum pump (5) are provided on the outside of the first operating table (1) and the second operating table (2); a three-way valve at the connection between the vacuum pump and the vacuum barrel is connected to a vacuum pump valve (603) at one end of a water outlet valve (6) at the second operating table via a vacuum pipe; a switch valve (601) is provided at the other end of the water outlet valve; the water outlet valve is L-shaped and is 30-50 cm higher than one end of the second operating table; a rod-shaped liquid level observer (602) is provided in the pipeline between the switch valve and the vacuum pump valve at the higher end of the water outlet valve; a small control valve is provided at the water inlet of the water inlet valve (3); the small control valve of the water inlet valve automatically opens when the vacuum reaches -0.1 MPa.

3. The wet water meter series filling operation table according to claim 2 is characterized in that The first operating table (1) is provided with a first pneumatic valve (9) and a second pneumatic valve (10); a three-way valve at the connection between the vacuum pump (5) and the vacuum barrel (4) is connected to the first pneumatic valve and the second pneumatic valve in sequence through pipelines; the inlet and outlet holes of the first pneumatic valve are respectively connected to the inlet and outlet of the valve body of the water inlet valve (3); the inlet and outlet holes of the second pneumatic valve are respectively connected to the inlet and outlet of the vacuum pump valve (603) of the water outlet valve (6); and the air pump pipe fitting of the air pump is connected to the first pneumatic valve.

4. The wet water meter series filling operation table according to claim 3 is characterized in that The first operating table (1) is provided with a third pneumatic valve (11), the push rod (7) is a push rod cylinder, the three-way valve at the connection between the vacuum pump (5) and the vacuum barrel (4) is connected to the first pneumatic valve (9), the third pneumatic valve, and the second pneumatic valve (10) in sequence through pipelines, and the inlet and outlet holes of the third pneumatic valve are respectively connected to the inlet and outlet holes of the push rod cylinder.

5. The wet water meter series filling operation table according to claim 1 is characterized in that On the linear guide rail (201) of the second operating table (2), 10 to 20 factory water meters (13) are arranged in series in sequence via a pipe connection assembly (12).

6. The wet water meter series filling operation table according to claim 1 is characterized in that The pipe connection assembly (12) comprises a joint bracket (1201) and a series pipe fitting (1202). The T-shaped heads on both sides of the joint bracket of the pipe connection assembly are respectively provided with openings that are wedged and fixed to the linear guide rails (201) on both sides of the second operating table (2). The series pipe fitting is fixed to the sleeve hole in the middle of the joint bracket by means of a locking nut (1203) or a locking screw. An annular groove is provided in the middle of the outer diameter of the series pipe fitting in the joint bracket at the locking and fixing position. Internal threads are respectively provided on the inner diameters of the two ends of the center hole of the series pipe fitting. The external threads at the water inlet and the water outlet at both ends of the factory water meter (13) are respectively connected to the internal threads of the corresponding series pipe fittings on both sides.

7. The wet water meter series filling operation table according to claim 1 is characterized in that A support rod (202) is provided at the bottom of the second operating platform where the second operating platform (2) is hingedly fixed to the first operating platform (1).

8. The wet water meter series filling operation table according to claim 1 is characterized in that The linear guide rail (201) of the second operating table (2) is protruded and arranged above the inner side of the rectangular frame of the second operating table through a bottom frame (2011) arranged equidistantly at the bottom.

9. The wet water meter series filling operation table according to claim 1 is characterized in that A clamp is provided at one end of the water inlet valve (3) connected to the factory water meter (13); the water inlet valve and the water outlet valve (6) are respectively fixed to the linear guide rails (201) on both sides of the second operating table (2) through openings on both sides of the base through wedging; a locking wrench is provided at the wedging position.

10. The wet water meter series filling operation table according to claim 1 is characterized in that An infrared counting sensor and an infrared sensor are provided on the outer side of the first operating table (1) on the other symmetrical side of the push rod (7).

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