Quantitative filling equipment for liquid

Abstract

The utility model relates to the technical field of filling, and discloses liquid quantitative filling equipment which comprises a liquid storage tank, a metering barrel and a filling valve which are sequentially connected, a liquid inlet of the liquid storage tank is connected with a feeding pipeline, a first liquid outlet and a second liquid outlet are formed in the bottom of the liquid storage tank, and the first liquid outlet and the second liquid outlet are communicated with each other. A first flow valve is arranged on a pipeline of the first liquid outlet, a second flow valve is arranged on a pipeline of the second liquid outlet, a weighing sensor is arranged on the metering barrel, and the first flow valve, the second flow valve and the weighing sensor are electrically connected with a control system. The flow of the first flow valve is larger than that of the second flow valve. By arranging the first liquid outlet, the second liquid outlet, the weighing sensor and the control system, a liquid product can be firstly subjected to coarse filling and then subjected to fine filling, the weight of the liquid product in the metering barrel is detected in real time, and the filling precision and speed can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filling, in particular to a quantitative filling device for liquid. Background Art

[0002] Liquid chemical products of chemical production enterprises are generally transported through pipelines to liquid storage tanks. Before leaving the factory, the liquid products in the liquid storage tanks are filled according to production needs, that is, the liquid products are measured and packaged into barrels. The existing filling equipment (Chinese patent with announcement number CN207483326U) includes a metering barrel, multiple metering feed ports opened on the side wall of the metering barrel, valves set in front of the metering feed ports, and overflow ports opened above the multiple metering feed ports. The multiple metering feed ports and overflow ports are respectively connected to the oil supply pipeline, and a filling port is opened at the bottom of the metering barrel. It realizes a variety of filling volumes through different combinations of multiple metering feed ports, multiple valves and overflow ports, but the filling accuracy of the above equipment is low, and the multiple metering feed ports set form multiple connections, which are prone to leakage and other problems, causing corrosion of the pipeline.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a quantitative filling device for liquids, aiming to improve the accuracy and speed of filling liquid products.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A quantitative filling device for liquid comprises a liquid storage tank, a metering barrel and a filling valve connected in sequence, wherein the liquid inlet of the liquid storage tank is connected to a feed pipe, a first liquid outlet and a second liquid outlet are arranged at the bottom of the liquid storage tank, a first flow valve is arranged on the pipe of the first liquid outlet, a second flow valve is arranged on the pipe of the second liquid outlet, a weighing sensor is arranged on the metering barrel, the first flow valve, the second flow valve and the weighing sensor are electrically connected to a control system respectively, and the flow of the first flow valve is greater than the flow of the second flow valve.

[0007] The quantitative filling equipment for liquid, wherein a first overflow port is opened on the upper part of the metering barrel, the first overflow port is connected to the overflow liquid storage barrel through a pipeline, and a first overflow valve and a sight glass are arranged on the pipeline between the first overflow port and the overflow liquid storage barrel.

[0008] The quantitative filling equipment for liquid, wherein a reflux port is provided at the bottom of the overflow liquid storage barrel, the reflux port is connected to the liquid storage tank through a pipeline, and a reflux valve and a lifting pump are provided on the pipeline between the reflux port and the liquid storage tank.

[0009] The quantitative filling equipment for liquids, wherein a filter tank is also connected downstream of the lift pump, the liquid inlet of the filter tank is located at the bottom, and the liquid outlet of the filter tank is located at the top.

[0010] The quantitative filling equipment for liquid further comprises a gas-liquid separator, which is respectively connected to the upper parts of the liquid storage tank, the metering barrel and the overflow liquid storage barrel through pipelines.

[0011] The quantitative filling equipment for liquid, wherein the first valve is respectively provided on the pipeline between the gas-liquid separator and the liquid storage tank, the pipeline between the gas-liquid separator and the metering barrel, and the pipeline between the gas-liquid separator and the overflow liquid storage barrel.

[0012] The quantitative filling equipment for liquid, wherein the bottom of the gas-liquid separator and the overflow liquid storage barrel are connected via a pipeline, and a second overflow valve is provided on the pipeline between the gas-liquid separator and the overflow liquid storage barrel.

[0013] Beneficial effects:

[0014] The utility model provides a quantitative filling device for liquids. By arranging a liquid storage tank for storing a large amount of liquid products, a first liquid outlet and a second liquid outlet are arranged, so that the liquid products enter a metering barrel from different liquid outlets, and by limiting the flow of a first flow valve to be greater than the flow of a second flow valve, the liquid products can be roughly filled first and then finely filled. A weighing sensor and a control system are arranged, which are combined with the first flow valve and the second flow valve to detect the weight of the liquid product in the metering barrel in real time, thereby improving the filling accuracy and speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the quantitative filling equipment for liquid provided by the utility model.

[0016] Explanation of main component symbols: 1-liquid storage tank, 11-first liquid outlet, 12-second liquid outlet, 13-first flow valve, 14-second flow valve, 2-metering barrel, 22-first overflow port, 23-first overflow valve, 24-sight cup, 3-filling valve, 4-overflow liquid storage barrel, 41-reflux port, 42-reflux valve, 43-lifting pump, 44-filter tank, 5-gas-liquid separator, 51-first valve, 52-second overflow valve, 10-packaging barrel. DETAILED DESCRIPTION

[0017] The utility model provides a quantitative filling device for liquids. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0018] See also Figure 1 The utility model provides a quantitative filling device for liquid, comprising a liquid storage tank 1, a metering barrel 2 and a filling valve 3 connected in sequence, the liquid inlet of the liquid storage tank 1 is connected to a feed pipe, a first liquid outlet 11 and a second liquid outlet 12 are arranged at the bottom of the liquid storage tank 1, a first flow valve 13 is arranged on the pipeline of the first liquid outlet 11, a second flow valve 14 is arranged on the pipeline of the second liquid outlet 12, a weighing sensor is arranged on the metering barrel 2, the first flow valve 13, the second flow valve 14 and the weighing sensor are electrically connected to a control system respectively, and the flow of the first flow valve 13 is greater than the flow of the second flow valve 14.

[0019] The prepared liquid product enters the liquid storage tank 1 through the feed pipe. The liquid storage tank 1 is large in size and can accommodate more liquid products. When filling begins, the packaging barrel 10 is placed under the pipeline with the filling valve 3 through the transportation line or manually by workers, the control system is started, the second flow valve 14 is closed, and the first flow valve 13 is opened, so that the liquid product with a large flow rate passes through the first liquid outlet 11, the pipeline, and the first flow valve 13 and enters the metering barrel 2. The weighing sensor on the metering barrel 2 detects the weight of the liquid product in the metering barrel 2 in real time. When the weight of the liquid product in the metering barrel 2 reaches the preset value, the signal is transmitted to the control system. The control system drives the first flow valve 13 to close and the second flow valve 14 to open, so that the liquid product slowly flows through the second liquid outlet 12, the pipeline, and the second flow valve 14 and enters the metering barrel 2 until the weight of the liquid product in the metering barrel 2 reaches the filling capacity. Or in another embodiment, the control system drives the first flow valve 13 and the second flow valve 14 to open simultaneously, so that the liquid product quickly enters the metering barrel 2. When the weighing sensor detects that the liquid product in the metering barrel 2 reaches a preset value, the control system drives the first flow valve 13 to close, and the second flow valve 14 continues to open, feeding the liquid into the metering barrel 2 at a slow speed until the weight of the liquid product reaches the filling capacity, and the second flow valve 14 is also closed. Then the filling valve 3 is opened, and the liquid product is filled into the packaging barrel 10.

[0020] By setting the first liquid outlet 11 and the second liquid outlet 12, the liquid product enters the metering barrel 2 from different liquid outlets, and by limiting the flow of the first flow valve 13 to be greater than the flow of the second flow valve 14, the liquid product can be roughly filled first and then finely filled, which can improve the filling accuracy and speed.

[0021] In some embodiments, a first overflow port 22 is provided at the upper portion of the metering barrel 2, and the first overflow port 22 is connected to the overflow liquid storage barrel 4 through a pipeline, and a first overflow valve 23 and a sight glass 24 are provided on the pipeline between the first overflow port 22 and the overflow liquid storage barrel 4. When the volume of the liquid product in the metering barrel 2 is too large, it can flow through the first overflow port 22, the first overflow valve 23 and the sight glass 24 and then flow back to the overflow liquid storage barrel 4, thereby avoiding waste of the liquid product. The setting of the sight glass 24 facilitates intuitively knowing the overflow of the liquid product in the metering barrel 2.

[0022] In some embodiments, the bottom of the overflow liquid storage barrel 4 is provided with a reflux port 41, the reflux port 41 is connected to the liquid storage tank 1 through a pipeline, and a reflux valve 42 and a lifting pump 43 are provided on the pipeline between the reflux port 41 and the liquid storage tank 1. When a certain amount of liquid product is stored in the overflow liquid storage barrel 4, or the filling equipment has been running for a period of time, the liquid product inside can flow through the reflux valve 42 and be lifted into the liquid storage tank 1 under the action of the lifting pump 43, so that the liquid product in the overflow liquid storage barrel 4 can be reused, thereby reducing the waste rate of the liquid product.

[0023] In some embodiments, a filter tank 44 is further connected downstream of the lift pump 43, wherein the liquid inlet of the filter tank 44 is located at the bottom, and the liquid outlet of the filter tank 44 is located at the top. During the preparation process of the product, or the shedding of materials on the container or pipeline, etc., impurities may be present in the liquid product, so the refluxed liquid product is filtered by the filter tank 44, which can make the purity of the liquid product higher and ensure the purity of the refluxed liquid product. Specifically, the filter tank 44 is provided with multiple layers of filter screens, and the apertures of the multiple layers of filter screens gradually decrease from bottom to top, so that the liquid product can fully flow through the multiple layers of filter screens to achieve sufficient purification and filtration.

[0024] In some embodiments, the quantitative filling device for liquid further includes a gas-liquid separator 5, which is connected to the upper part of the liquid storage tank 1, the metering barrel 2, and the overflow liquid storage barrel 4 through pipelines. The gas extracted from the above pipelines needs to pass through the gas-liquid separator 5 before being discharged to the outside. After the packaging barrel 10 is placed in the filling pipeline, the packaging barrel 10 can also be evacuated. When evacuating, part of the liquid in the container will be taken away. The gas-liquid separator 5 can separate the liquid product to make the air discharged to the outside cleaner.

[0025] In some embodiments, first valves 51 are respectively provided on the pipeline between the gas-liquid separator 5 and the liquid storage tank 1, the pipeline between the gas-liquid separator 5 and the metering barrel 2, and the pipeline between the gas-liquid separator 5 and the overflow liquid storage barrel 4. Specifically, when no air is pumped, the multiple first valves 51 are all in a closed state; when air is pumped, the multiple first valves 51 are in an open state. The setting of the first valves 51 prevents excess liquid products from entering the pipeline during the filling process, thereby increasing the load of the gas-liquid separator 5.

[0026] In some embodiments, the bottom of the gas-liquid separator 5 is connected to the overflow liquid storage barrel 4 through a pipeline, and a second overflow valve 52 is provided on the pipeline between the gas-liquid separator 5 and the overflow liquid storage barrel 4. The liquid product separated by the gas-liquid separator 5 flows back to the overflow liquid storage barrel 4 through the pipeline and the second overflow valve 52, so as to facilitate the reuse of the liquid product.

[0027] In summary, the utility model is provided with a liquid storage tank 1 for storing a large amount of liquid products, and a first liquid outlet 11 and a second liquid outlet 12 are provided, so that the liquid product enters the metering barrel 2 from different liquid outlets, and by limiting the flow rate of the first flow valve 13 to be greater than the flow rate of the second flow valve 14, the liquid product can be roughly filled first, and then finely filled. A weighing sensor and a control system are provided, which are combined with the first flow valve 13 and the second flow valve 14 to detect the weight of the liquid product in the metering barrel 2 in real time, which can improve the filling accuracy and speed. A first overflow port 22 is provided to allow the excess liquid product in the metering barrel 2 to flow back to the overflow liquid storage barrel 4 to avoid waste. A reflux port 41, a reflux valve 42 and a lifting pump 43 are provided in the overflow liquid storage barrel 4 to facilitate the liquid product in the overflow liquid storage barrel 4 to be lifted back to the liquid storage tank 1 for reuse. A filter tank 44 is provided to filter the liquid product in the overflow liquid storage barrel 4 to improve the purity of the liquid product in the filling equipment. A gas-liquid separator 5 is provided to trap the liquid product taken away in the gas-liquid separator 5 when the container is evacuated, thereby ensuring the cleanliness of the exhausted gas. A second overflow valve 52 is provided to return the liquid product separated by the gas-liquid separator 5 to the overflow liquid storage barrel 4 for reuse.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A quantitative filling device for liquids, characterized in that: It comprises a liquid storage tank, a metering barrel and a filling valve which are connected in sequence, wherein the liquid inlet of the liquid storage tank is connected to a feed pipe, a first liquid outlet and a second liquid outlet are arranged at the bottom of the liquid storage tank, a first flow valve is arranged on the pipe of the first liquid outlet, a second flow valve is arranged on the pipe of the second liquid outlet, a weighing sensor is arranged on the metering barrel, the first flow valve, the second flow valve and the weighing sensor are electrically connected to a control system respectively, and the flow of the first flow valve is greater than the flow of the second flow valve; a first overflow port is opened on the upper part of the metering barrel, the first overflow port is connected to an overflow liquid storage barrel through a pipe, and a first overflow valve and a sight glass are arranged on the pipe between the first overflow port and the overflow liquid storage barrel.

2. The quantitative filling equipment for liquid according to claim 1, characterized in that: A reflux port is provided at the bottom of the overflow liquid storage barrel, and the reflux port is connected to the liquid storage tank through a pipeline. A reflux valve and a lifting pump are provided on the pipeline between the reflux port and the liquid storage tank.

3. The quantitative filling equipment for liquid according to claim 2, characterized in that: A filter tank is also connected downstream of the lift pump, wherein the liquid inlet of the filter tank is located at the bottom and the liquid outlet of the filter tank is located at the top.

4. The quantitative filling equipment for liquid according to claim 1, characterized in that: It also includes a gas-liquid separator, which is connected to the upper parts of the liquid storage tank, the metering barrel, and the overflow liquid storage barrel through pipelines.

5. The quantitative filling equipment for liquid according to claim 4, characterized in that: A first valve is respectively arranged on the pipeline between the gas-liquid separator and the liquid storage tank, the pipeline between the gas-liquid separator and the metering barrel, and the pipeline between the gas-liquid separator and the overflow liquid storage barrel.

6. The quantitative filling equipment for liquid according to claim 4, characterized in that: The bottom of the gas-liquid separator and the overflow liquid storage barrel are connected via a pipeline, and a second overflow valve is arranged on the pipeline between the gas-liquid separator and the overflow liquid storage barrel.

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