Liquid filling device of full liquid seal water meter counter

Abstract

The utility model relates to the technical field of full-liquid-seal water meter counter machining, and discloses a liquid filling device of a full-liquid-seal water meter counter, which comprises a liquid storage tank and a vacuum tank, the vacuum tank is connected with a vacuumizing mechanism, and the liquid filling device further comprises a liquid level meter and a pressure release valve which are connected with the vacuum tank; a liquid filling pipe is connected between a liquid outlet of the liquid storage tank and a liquid filling port of the vacuum tank, a liquid adding valve is mounted on the liquid filling pipe, and a backflow mechanism is connected between a liquid outlet of the vacuum tank and a liquid return port of the liquid storage tank; a placing plate is arranged in the vacuum tank, and a fixing piece for fixing the counter is arranged on the placing plate. According to the invention, the liquid filling of the counter can reach standardized operation.

Description

Technical Field

[0001] The present application relates to the technical field of processing a fully liquid-sealed water meter counter, and in particular to a liquid filling device for a fully liquid-sealed water meter counter. Background Art

[0002] The reading part (digital wheel display) of the fully liquid-sealed water meter counter is isolated from the water being measured and sealed in a reading box filled with a mixture of glycerin and pure water. It is suitable for poor water quality. When immersed in the water being measured, the fully liquid-sealed water meter counter can keep the dial indication clear and the reading is not contaminated. The liquid seal can also absorb the vibration and impact generated when the water meter rotates, reduce the counting error, contribute to the stability of the counter's internal stability, and reduce the impact of temperature changes on counting accuracy. Therefore, filling is an important link in the design and manufacturing process of the fully liquid-sealed water meter counter.

[0003] At present, the filling method of the full liquid seal water meter counter is to manually remove the liquid through the pinhole and then inject the liquid into the liquid seal main board clamp. If the liquid is filled manually, the filling amount is difficult to control, it is not easy to achieve standardized operation, and there is a phenomenon of insufficient filling. Utility Model Content

[0004] In order to improve standardized operations, the present application provides a liquid filling device for a fully liquid-sealed water meter counter.

[0005] The present application provides a liquid filling device for a fully liquid-sealed water meter counter, which adopts the following technical solution:

[0006] A liquid filling device for a fully liquid-sealed water meter counter comprises a liquid storage tank and a vacuum tank, wherein the vacuum tank is connected to a vacuum pumping mechanism, and the liquid filling device further comprises a liquid level gauge and a pressure relief valve connected to the vacuum tank;

[0007] A filling pipe is connected between the liquid outlet of the liquid storage tank and the filling port of the vacuum tank, a filling valve is installed on the filling pipe, and a reflux mechanism is connected between the liquid discharge port of the vacuum tank and the liquid return port of the liquid storage tank;

[0008] A placement plate is arranged in the vacuum tank, and a fixing piece for fixing the counter is arranged on the placement plate.

[0009] By adopting the above technical solution, liquid is injected into the liquid storage tank, a counter that needs to be filled with liquid is first placed in the vacuum tank, and then the vacuum tank is sealed. When the vacuum pumping mechanism is started, the vacuum tank is evacuated, and the vacuum value is stopped when it reaches the set vacuum value. Then, the liquid filling valve on the filling pipe is opened, and the liquid storage tank and the vacuum tank are connected. The vacuum tank automatically draws the liquid in the liquid storage tank into the liquid storage tank. The liquid entering the vacuum tank can be observed through the liquid level gauge on the vacuum tank. When the liquid is higher than the counter, the counter is filled with liquid, and the fixing component can limit the counter on the placement rack from floating up.

[0010] When the counter is filled with liquid, close the filling valve and the vacuum device, open the pressure relief valve to release the pressure in the vacuum tank, and then open the reflux mechanism to return all the liquid to the liquid storage tank. Finally, the staff will open the vacuum tank, take out the filled counter, and put the unfilled counter in.

[0011] Each time the liquid is filled, multiple counters can be filled at one time, which improves efficiency. In addition, the liquid can fill the counter under the action of negative pressure, so that the filling amount can be controlled, and the phenomenon of under-filling is not likely to occur, so that the filling of the counter can reach standardized operation.

[0012] Optionally, a plurality of partitions are installed on the placement plate, and a space for accommodating a counter is reserved between two adjacent partitions.

[0013] By adopting the above technical solution, the role of the partition is to separate the position for placing the counters, and the counters are directly arranged in a row between the two partitions, so that the staff can place the counters in an orderly manner.

[0014] Optionally, the fixing member includes a pressing plate having mesh holes, and the pressing plate is installed in two adjacent partitions.

[0015] By adopting the above technical solution, when the counter is placed on the placement plate, the pressure plate is placed between the two partitions to press down the counter, so that the counter will not float up due to the buoyancy of the liquid.

[0016] Optionally, the placement plate can be detachably installed in the vacuum tank.

[0017] By adopting the above technical solution, the placement plate can be taken out of the vacuum tank, which is convenient for people to place the counter outside the vacuum tank first. After the counter that has been filled with liquid leaves, the counter filled with liquid can be placed in the vacuum tank, which is also a way to improve the filling efficiency.

[0018] Optionally, a cushion block is provided at the bottom of the vacuum tank.

[0019] By adopting the above technical solution, after the cushion block is set, the placement plate can be in a horizontal state when placed in the vacuum tank.

[0020] Optionally, a guide slope is provided at the bottom of the liquid storage tank, the liquid outlet of the liquid storage tank is located at the bottom of the liquid storage tank, and the liquid return port of the liquid storage tank is located at the top of the guide slope.

[0021] By adopting the above technical solution, the reflux mechanism allows the liquid to return to the liquid storage tank. When there is not much liquid in the liquid storage tank, it will mainly settle at the bottom of the liquid storage tank. The refluxed liquid will also flow downward. The liquid outlet is located at the bottom to ensure that all liquid can flow out of the liquid storage tank.

[0022] Optionally, the reflux mechanism includes a reflux pipe, a reflux pump and a reflux valve installed on the reflux pipe, and both ends of the reflux pipe are respectively connected to the liquid discharge port of the vacuum tank and the liquid return port of the liquid storage tank.

[0023] By adopting the above technical solution, the reflux valve controls the opening and closing of the reflux pipe, and the reflux pump can pump the liquid back into the liquid storage tank.

[0024] Optionally, the vacuum tank is equipped with a vacuum detection device.

[0025] By adopting the above technical solution, the vacuum detection equipment can detect the vacuum condition of the vacuum tank.

[0026] In summary, the present application includes at least one of the following beneficial effects:

[0027] 1. When the filling environment of the counter is in a vacuum negative pressure state, the liquid in the liquid storage tank can automatically enter the vacuum tank for filling, without human intervention throughout the process. Multiple counters can be filled at the same time, and the filling efficiency is improved;

[0028] 2. When liquid enters the counter under a specific negative pressure state, the counter can be automatically filled up, and the phenomenon of underfilling is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the principle of an embodiment of the present application;

[0030] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 3 is a schematic diagram of a partition according to an embodiment of the present application installed in a vacuum tank;

[0032] Figure 4 is a schematic diagram of a counter in an embodiment of the present application arranged on a placement board;

[0033] Figure 5 It is an exploded schematic diagram of the relationship between the placement plate, the partition plate and the pressure plate of the embodiment of the present application;

[0034] Figure 6 It is a schematic diagram of the interior of the liquid storage tank of an embodiment of the present application.

[0035] Explanation of the reference numerals in the accompanying drawings: 1. Liquid storage tank; 2. Vacuum tank; 3. Liquid filling pipe; 4. Liquid filling valve; 5. Liquid level gauge; 6. Pressure relief valve; 7. Vacuum extraction mechanism; 71. Vacuum extraction pipe; 72. Vacuum valve; 73. Vacuum pump; 8. Reflux mechanism; 81. Reflux pipe; 82. Reflux pump; 83. Reflux valve; 9. Pressure gauge; 10. Placement plate; 11. Partition; 12. Pressure plate; 13. Cushion block; 14. Diversion slope. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The present application embodiment discloses a liquid filling device for a fully liquid-sealed water meter counter. Figure 1 and Figure 2 The liquid filling device of the fully liquid-sealed water meter counter includes a liquid storage tank 1 and a vacuum tank 2. The liquid storage tank 1 is sealed, and the vacuum tank 2 is connected to a vacuum pumping mechanism 7. The vacuum pumping mechanism 7 includes a vacuum pumping tube 71, a vacuum valve 72 and a vacuum pump 73 installed on the vacuum pumping tube 71. The vacuum pump 73 and the vacuum valve 72 are turned on during vacuum pumping.

[0038] A filling pipe 3 is connected between the liquid outlet of the liquid storage tank 1 and the filling port of the vacuum tank 2, and a filling valve 4 is installed on the filling pipe 3. When the vacuum tank 2 is evacuated to form a negative pressure, the filling valve 4 is opened, and the liquid stored in the liquid storage tank 1 enters the vacuum tank 2 due to the negative pressure. A counter to be filled with liquid is placed in the vacuum tank 2, and the filling port of the counter is connected to the vacuum tank 2. The filling part of the counter is also in a vacuum negative pressure state, so the liquid can be poured into the counter after entering the vacuum tank 2.

[0039] The filling device also includes a liquid level gauge 5 and a pressure relief valve 6 connected to the vacuum tank 2. The liquid level gauge 5 is connected to the vacuum tank 2. The connection between the liquid level gauge 5 and the vacuum tank 2 is equivalent to a communicating vessel. The liquid level gauge 5 will display the height of the liquid in the vacuum tank 2, which makes it convenient for people to observe the liquid level height in the vacuum tank 2.

[0040] When the counter is filled with liquid, before taking out the counter, first open the pressure relief valve 6 to release the pressure in the vacuum tank 2; it is also necessary to return the liquid in the vacuum tank 2 to the liquid storage tank 1 for storage in preparation for the next filling. A reflux mechanism 8 is connected between the discharge port of the vacuum tank 2 and the reflux port of the liquid storage tank 1. The reflux mechanism 8 includes a reflux pipe 81, a reflux pump 82 installed on the reflux pipe 81, and a reflux valve 83. After the reflux valve 83 and the reflux pump 82 are opened, the reflux mechanism 8 drives the liquid back into the liquid storage tank 1, and then the vacuum tank 2 is opened to take out the counter. The reflux mechanism 8 includes a reflux pipe 81, a reflux pump 82 installed on the reflux pipe 81, and a reflux valve 83. The two ends of the reflux pipe 81 are connected to the discharge port and the reflux port, respectively.

[0041] The operation of returning the liquid to the liquid storage tank 1 is to first close the vacuum pumping mechanism 7, then open the pressure relief valve 6, first perform pressure relief treatment on the vacuum tank 2, and then open the reflux valve 83 and the reflux pump 82, and the reflux pump 82 will pump the liquid back into the liquid storage tank 1.

[0042] A vacuum detection device is also installed on the vacuum tank 2 . The vacuum detection device is a pressure gauge 9 . The pressure gauge 9 displays the pressure condition in the vacuum tank 2 .

[0043] Reference Figure 3 In one embodiment, a placing plate 10 is provided in the vacuum tank 2, and a fixing member for fixing the counter is provided on the placing plate 10, and the fixing member restricts the counter from floating up and leaving the placing plate 10 due to the liquid or the counter from tilting.

[0044] The placing plate 10 is installed in the vacuum tank 2. In order to allow the liquid to pass through the placing plate 10 and enter the counter, the placing plate 10 has a hollow part for the liquid to pass through.

[0045] Reference Figure 4 In one embodiment, a plurality of partitions 11 are installed on the placement plate 10, and a space for placing a row of counters is left between two adjacent partitions 11, so that the counters can be placed on the placement plate 10 in an orderly manner. The placement plate 10 of the embodiment of the present application is a circular ring structure, and there are only two partitions 11. The two partitions 11 are also circular ring structures, and the two partitions 11 are fixedly mounted on the inner circle and the outer circle of the placement plate 10 respectively. The counters are arranged in order on the placement plate 10 in sequence, with the injection port facing upward. The placement plates 10 can be stacked upward in multiple layers, and the placement plate 10 on the upper layer is placed on the two partitions 11 of the lower placement plate 10. The partitions 11 leave a gap between the upper and lower placement plates 10, so the two partitions 11 also play the role of supporting other placement plates 10. Two placement plates 10 in the embodiment of the present application are stacked up and down, and each placement plate 10 is placed with ten counters.

[0046] Reference Figure 5 The placing plate 10 and the two partitions 11 are made of stainless steel, and the placing plate 10 and the two partitions 11 are welded into one. Two horizontal lifting rods are installed on the inner ring to facilitate people to take and place the placing plate 10.

[0047] Reference Figure 5 The fixing part includes a pressing plate 12, and the pressing plate 12 can also be made of a stainless steel plate. The pressing plate 12 can be detachably installed in two adjacent partitions 11, and the pressing plate 12 can directly slide in or out between the two partitions 11. The number of pressing plates 12 corresponds to the number of placing plates 10, and the pressing plate 12 is arranged according to the shape of the placing plates 10, so the pressing plate 12 is also in a circular shape. The pressing plate 12 and the partition 11 on the inner circle of the placing plate 10 are both provided with mesh holes, and the pressing plate 12 does not have a blocking effect on the liquid filling port of the counter, so that the liquid in the vacuum tank 2 can fully enter the counter.

[0048] Reference Figure 4 In one embodiment, the placement plate 10 can be detachably installed in the vacuum tank 2, and a plurality of pads 13 are arranged at the bottom of the vacuum tank 2. The upper surfaces of the pads 13 are in the same horizontal plane, and the placement plate 10 can be placed flatly in the vacuum tank 2 through the pads 13.

[0049] The pad 13 is a hollow structure with an opening, which is connected to the inside of the vacuum tank 2, so the pad 13 does not occupy much space in the vacuum tank 2. The filling port and the discharge port of the vacuum tank 2 of the embodiment of the present application are blocked by different pads 13 respectively.

[0050] Reference Figure 6 In order to make the liquid in the liquid storage tank 1 flow out smoothly, a guide slope 14 is provided at the bottom of the liquid storage tank 1, and the guide slope 14 is hemispherical. The liquid outlet of the liquid storage tank 1 is located at the bottom of the liquid storage tank 1, and the liquid return port of the liquid storage tank 1 is located on the top of the guide slope 14. The reflux mechanism 8 allows the liquid to flow back. If there is not much liquid left, the liquid can also flow down along the guide slope 14 to the bottom of the guide slope 14. As long as there is liquid in the liquid storage tank 1, it can be discharged.

[0051] It should be noted that the negative pressure value of the vacuum tank 2 is related to the height of the liquid level to be extracted. Since the liquid flows by the negative pressure difference on both sides, the set value of the negative pressure is related to the height of the liquid level to be extracted and the size of the vacuum tank 2. The larger the amount to be extracted, the greater the negative pressure value that needs to be set.

[0052] The implementation principle of the liquid filling device of the fully liquid-sealed water meter counter in the embodiment of the present application is:

[0053] Arrange the counters on the placement board 10 in sequence, with the liquid injection port of the counter facing upward, and then use the pressing plate 12 to press down and fix the counters, then close the vacuum tank 2, close all valves, start the vacuum pumping mechanism 7 to vacuumize, and the negative pressure cannot be lower than 0.08MPA within one minute; after the vacuum tank 2 reaches the set negative pressure value, the liquid filling valve 4 is opened, and the liquid in the liquid storage tank 1 enters the vacuum tank 2 under the action of negative pressure; observe the liquid level gauge 5, and when the liquid level in the vacuum tank 2 is higher than the counter, close the liquid filling valve 4, maintain the pressure for five minutes, and the counter is filled with liquid; close the vacuum pumping mechanism 7, open the pressure relief valve 6 to release the pressure, start the reflux mechanism 8 to make the liquid flow back from the vacuum tank 2 to the liquid storage tank 1 for storage; close the reflux mechanism 8, open the vacuum tank 2, and take out the counter. Fill multiple counters at one time to increase the filling efficiency and improve the operation standard.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A liquid filling device for a fully liquid-sealed water meter counter, characterized in that: It comprises a liquid storage tank (1) and a vacuum tank (2), wherein the vacuum tank (2) is connected to a vacuum pumping mechanism (7), and the liquid filling device further comprises a liquid level gauge (5) and a pressure relief valve (6) connected to the vacuum tank (2); A liquid filling pipe (3) is connected between the liquid outlet of the liquid storage tank (1) and the liquid filling port of the vacuum tank (2), a liquid filling valve (4) is installed on the liquid filling pipe (3), and a reflux mechanism (8) is connected between the liquid discharge port of the vacuum tank (2) and the liquid return port of the liquid storage tank (1); A placement plate (10) is arranged in the vacuum tank (2), and a fixing piece for fixing a counter is arranged on the placement plate (10).

2. The liquid filling device of the fully liquid-sealed water meter counter according to claim 1 is characterized in that: A plurality of partitions (11) are mounted on the placement plate (10), and a space for accommodating a counter is reserved between two adjacent partitions (11).

3. The liquid filling device of the fully liquid-sealed water meter counter according to claim 2 is characterized in that: The fixing member comprises a pressing plate (12), the pressing plate (12) having mesh holes, and the pressing plate (12) is installed in two adjacent partitions (11).

4. The liquid filling device for the fully liquid-sealed water meter counter according to claim 2, characterized in that: The placement plate (10) is detachably installed in the vacuum tank (2).

5. The liquid filling device for the fully liquid-sealed water meter counter according to claim 4, characterized in that: A cushion block (13) is provided at the bottom of the vacuum tank (2).

6. The liquid filling device for the fully liquid-sealed water meter counter according to claim 1, characterized in that: A guide slope (14) is provided at the bottom of the liquid storage tank (1); a liquid outlet of the liquid storage tank (1) is located at the bottom of the liquid storage tank (1); and a liquid return port of the liquid storage tank (1) is located at the top of the guide slope (14).

7. The liquid filling device for the fully liquid-sealed water meter counter according to claim 1, characterized in that: The reflux mechanism (8) comprises a reflux pipe (81), a reflux pump (82) and a reflux valve (83) mounted on the reflux pipe (81), and two ends of the reflux pipe (81) are respectively connected to the liquid discharge port of the vacuum tank (2) and the liquid return port of the liquid storage tank (1).

8. The liquid filling device for a fully liquid-sealed water meter counter according to claim 1, characterized in that: The vacuum tank (2) is equipped with a vacuum detection device.

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