A liquid dispensing system

Abstract

The utility model discloses a liquid subpackaging system, including buffer tank, pre -fill container, fill needle, gas supply device and filling valve, the fill needle passes through filling valve and pre -fill container's bottom end connection, the bottom of pre -fill container passes through first valve body and buffer tank's liquid outlet intercommunication, and the top passes through second valve body and third valve body and buffer tank's liquid inlet and gas supply device intercommunication respectively. This liquid subpackaging system has the advantages of avoiding causing the waste of liquid medicine, reducing production cost, filling precision is stable good, production efficiency is high etc.

Description

Technical Field

[0001] This utility model relates to the field of food and pharmaceutical packaging machinery and equipment technology, specifically to a liquid dispensing system. Background Technology

[0002] Existing liquid filling equipment generally includes a buffer tank, a distributor, a filling pump, and a filling needle. The distributor is connected to the buffer tank via an inlet pipe, and the filling needle is connected to the distributor via the filling pump. The filling pump injects the liquid into the bottle through the filling needle, thus completing the bottle filling. Existing liquid filling equipment has the following shortcomings: 1) Before filling, the pipeline needs to be emptied. During the emptying process, the filling needle is inserted into the bottle, and the air and medicine in the pipeline are discharged into the bottle by the filling pump to empty the pipeline. Due to the influence of air, the emptied and filled bottles are difficult to meet the standards and generally need to be discarded, resulting in waste of medicine and increased production costs. 2) After the filling pump has been used multiple times, the filling accuracy becomes lower and the filling volume needs to be adjusted. On the one hand, this affects production efficiency, and on the other hand, it requires real-time monitoring, which increases production costs.

[0003] Some manufacturers have opted to eliminate the filling pump and use gravity-flow filling or time-pressure filling. However, the accuracy of gravity-flow filling is difficult to control effectively and is not suitable for products requiring high precision. The time-pressure filling method is still struggling to overcome the accuracy issues when filling out missing bottles. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a liquid dispensing system that avoids waste of medicine, reduces production costs, has stable filling accuracy, and high production efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A liquid dispensing system includes a buffer tank, a pre-filled container, a filling needle, an air supply device, and a filling valve. The filling needle is connected to the bottom of the pre-filled container via the filling valve. The bottom of the pre-filled container is connected to the liquid outlet of the buffer tank via a first valve body, and the top of the pre-filled container is connected to the liquid inlet of the buffer tank and the air supply device via a second valve body and a third valve body, respectively.

[0006] As a further improvement to the above technical solution: The first valve body is a one-way valve that prevents fluid from flowing from the pre-filled container to the buffer tank; the second valve body is a one-way valve that prevents fluid from flowing from the pre-filled container to the buffer tank; and the third valve body is a one-way valve that prevents fluid from flowing from the pre-filled container to the gas supply device.

[0007] The pre-filled container is equipped with an adjusting plug for adjusting the internal size of the pre-filled container.

[0008] The adjusting plug is vertically arranged and can be raised and lowered. The adjusting plug has a connecting channel. The second valve body and the third valve body are both connected to the inside of the pre-filled container through the connecting channel.

[0009] The interior of the pre-filled container is a cylindrical space with an open top, and the adjusting plug is inserted into the cylindrical space.

[0010] The gas supply device includes a gas supply mechanism and a first connecting pipeline. The gas supply mechanism is connected to the pre-filled container through the first connecting pipeline, and the third valve body is located on the first connecting pipeline.

[0011] The gas supply device further includes a second connecting pipe and a third connecting pipe. The gas supply device is connected to the first valve body through the second connecting pipe and to the buffer tank through the third connecting pipe. A fourth valve body is provided on the second connecting pipe and the third connecting pipe respectively.

[0012] The gas supply mechanism includes a gas supply pipeline and a regulating valve installed on the gas supply pipeline. The first connecting pipeline, the second connecting pipeline, and the third connecting pipeline are all connected to the gas supply pipeline.

[0013] It also includes a distributor and a buffer tank. The bottom of the buffer tank is connected to the distributor through an outlet valve. The first valve body is connected to the distributor. The inlet end of the buffer tank is connected to an inlet device. The top of the buffer tank and the buffer tank are connected through an on / off valve. The second valve body is connected to the buffer tank.

[0014] The buffer tank is located above the buffer tank, and the dispenser is located below the buffer tank.

[0015] Compared with the prior art, the advantages of this utility model are: The liquid dispensing system of this invention has two advantages. First, the venting process takes place in a loop formed by the buffer tank and the pre-filled container. The vented liquid does not come into contact with the outside air and directly enters the buffer tank for refilling, avoiding waste of the liquid and reducing production costs. Second, compared with filling pump filling, the system uses an air supply device and a filling valve for pneumatic filling. Since there is no piston reciprocating (filling is achieved by the reciprocating motion of the piston in the filling pump), the filling accuracy is stable and the production efficiency is high, further reducing production costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the liquid dispensing system of this utility model.

[0017] Figure 2 This is a schematic diagram of the pre-filled container of the liquid dispensing system of this utility model.

[0018] The labels in the diagram represent: 1. Buffer tank; 11. Dispensing valve; 2. Dispenser; 3. Pre-filling container; 31. First valve body; 32. Second valve body; 33. Third valve body; 34. Adjusting plug; 341. Connecting channel; 35. Cylindrical space; 4. Filling needle; 5. Buffer tank; 51. On / off valve; 6. Gas supply device; 61. Gas supply mechanism; 611. Gas supply pipeline; 612. Adjusting valve; 62. First connecting pipeline; 63. Second connecting pipeline; 64. Third connecting pipeline; 65. Fourth valve body; 7. Filling valve; 8. Liquid inlet device. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Figure 1 and Figure 2An embodiment of the liquid dispensing system of this utility model is shown. The liquid dispensing system of this embodiment includes a buffer tank 1, a pre-filled container 3, a filling needle 4, an air supply device 6, and a filling valve 7. The filling needle 4 is connected to the bottom end of the pre-filled container 3 through the filling valve 7. The bottom of the pre-filled container 3 is connected to the liquid outlet end of the buffer tank 1 through a first valve body 31, and the top is connected to the liquid inlet end of the buffer tank 5 and the air supply device 6 through a second valve body 32 and a third valve body 33, respectively.

[0024] Specifically, the top of the pre-filled container 3 is connected to the liquid inlet of the buffer tank 5 through the second valve body 32 and to the gas supply device 6 through the third valve body 33.

[0025] Exhaust process: Filling valve 7 is closed, buffer tank 1 and pre-filled container 3 are connected to form a loop, liquid in buffer tank 1 flows out through the liquid outlet of buffer tank 1 and enters pre-filled container 3 through first valve body 31 until pre-filled container 3 is filled with liquid to exhaust gas in pre-filled container 3 and corresponding pipeline.

[0026] Filling process: When the filling valve 7 is opened, the air supply device 6 supplies compressed air to the pre-filled container 3, so that the liquid in the pre-filled container 3 is filled into the container below through the filling needle 4; then, the filling valve 7 is closed, so that the pre-filled container 3 is filled with liquid, and then the filling valve 7 is opened again, and the air supply device 6 supplies compressed air to the pre-filled container 3, so that the liquid in the pre-filled container 3 is filled again through the filling needle 4.

[0027] This liquid dispensing system has several advantages. First, the venting process takes place in a loop formed by the buffer tank 1 and the pre-filled container 3. The vented liquid does not come into contact with the outside air and directly enters the buffer tank 1 for refilling, avoiding waste of the liquid and reducing production costs. Second, compared to filling pump filling, the system uses an air supply device 6 and a filling valve 7 for pneumatic filling. Since there is no piston reciprocating (filling is achieved by the reciprocating motion of the piston in the filling pump), the filling accuracy is stable and the production efficiency is high, further reducing production costs.

[0028] Furthermore, in this embodiment, the first valve body 31 is a one-way valve to prevent fluid from flowing from the pre-filled container 3 to the buffer tank 1, the second valve body 32 is a one-way valve to prevent fluid from flowing from the pre-filled container 3 to the buffer tank 1, and the third valve body 33 is a one-way valve to prevent fluid from flowing from the pre-filled container 3 to the gas supply device 6. Thus, during the venting process, the liquid in the buffer tank 1 enters the pre-filled container 3 through the first valve body 31, then flows back to the buffer tank 1 through the second valve body 32, and will not flow out through the third valve body 33. During the filling process, the filling valve 7 is opened, and the air supply device 6 presses the liquid in the pre-filled container 3 into the filling needle 4 through the air supply action, so that it will not flow out through the first valve body 31 and the second valve body 32.

[0029] Furthermore, in this embodiment, the pre-filled container 3 is provided with an adjusting plug 34 for adjusting the internal size of the pre-filled container 3. The internal size (i.e., capacity) of the pre-filled container 3 can be adjusted by adjusting the adjusting plug 34, thereby adjusting the single filling amount to meet the filling requirements of containers with different capacities and improving adaptability.

[0030] Furthermore, such as Figure 2 As shown, in this embodiment, the adjusting plug 34 is vertically arranged and can be adjusted up and down. The adjusting plug 34 has a connecting channel 341, and the second valve body 32 and the third valve body 33 are both connected to the interior of the pre-filled container 3 through the connecting channel 341. The structural design is reasonable and compact, which not only meets the connection requirements for the inlet and outlet of liquid in the pre-filled container 3, but also does not affect the adjustment operation of the adjusting plug 34.

[0031] Furthermore, in this embodiment, the interior of the pre-filled container 3 is a cylindrical space 35 with an open top, and the adjusting plug 34 is inserted into the cylindrical space 35. Specifically, the adjusting plug 34 is inserted into the cylindrical space 35 through the opening at the top of the cylindrical space 35.

[0032] Furthermore, in this embodiment, the air supply device 6 includes an air supply mechanism 61 and a first connecting pipe 62. The air supply mechanism 61 is connected to the pre-filled container 3 through the first connecting pipe 62, and the third valve body 33 is disposed on the first connecting pipe 62. During filling, the air supply mechanism 61 fills the pre-filled container 3 with compressed air through the first connecting pipe 62.

[0033] Furthermore, in this embodiment, the gas supply device 6 also includes a second connecting pipe 63 and a third connecting pipe 64. The gas supply device 6 is connected to the first valve body 31 through the second connecting pipe 63 and to the buffer tank 1 through the third connecting pipe 64. A fourth valve body 65 is provided on both the second connecting pipe 63 and the third connecting pipe 64. The connection between the gas supply device 6 and the first valve body 31 via the second connecting pipe 63 and the buffer tank 1 via the third connecting pipe 64 facilitates gas purging of the second connecting pipe 63, the first valve body 31, and the buffer tank 1, achieving excellent drying and cleaning effects. During the venting and filling processes, the fourth valve bodies 65 on both the second connecting pipe 63 and the third connecting pipe 64 are closed. The first connecting pipe 62 is also provided with a fourth valve body 65, which is opened during the filling process.

[0034] Furthermore, in this embodiment, the gas supply mechanism 61 includes a gas supply pipeline 611 and a regulating valve 612 disposed on the gas supply pipeline 611. The first connecting pipeline 62, the second connecting pipeline 63 and the third connecting pipeline 64 are all connected to the gas supply pipeline 611.

[0035] Furthermore, this embodiment also includes a distributor 2 and a buffer tank 5. The bottom of the buffer tank 1 is connected to the distributor 2 via an outlet valve 11, the first valve body 31 is connected to the distributor 2, the inlet end of the buffer tank 1 is connected to an inlet device 8, the buffer tank 5 is connected to the top of the buffer tank 1 via an on / off valve 51, and the second valve body 32 is connected to the buffer tank 5. Specifically, the second connecting pipe 63 is connected to the distributor 2.

[0036] Furthermore, in this embodiment, the buffer tank 5 is located above the buffer tank 1, and the dispenser 2 is located below the buffer tank 1.

[0037] Furthermore, in this embodiment, the inlet end of the buffer tank 1 is connected to an inlet device 8, which is used to supply the required liquid to the buffer tank 1. The inlet end of the buffer tank 1 is located at the top of the buffer tank 1, and the outlet end of the buffer tank 1 is located at the bottom of the buffer tank 1.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A liquid dispensing system, characterized in that: It includes a buffer tank (1), a pre-filled container (3), a filling needle (4), an air supply device (6), and a filling valve (7). The filling needle (4) is connected to the bottom of the pre-filled container (3) through the filling valve (7). The bottom of the pre-filled container (3) is connected to the liquid outlet of the buffer tank (1) through the first valve body (31), and the top is connected to the liquid inlet of the buffer tank (5) and the air supply device (6) through the second valve body (32) and the third valve body (33), respectively.

2. The liquid dispensing system according to claim 1, characterized in that: The first valve body (31) is a one-way valve that prevents fluid from flowing from the pre-filled container (3) to the buffer tank (1), the second valve body (32) is a one-way valve that prevents fluid from flowing from the pre-filled container (3) to the buffer tank (1), and the third valve body (33) is a one-way valve that prevents fluid from flowing from the pre-filled container (3) to the gas supply device (6).

3. The liquid dispensing system according to claim 1, characterized in that: The pre-filled container (3) is provided with an adjusting plug (34) for adjusting the internal size of the pre-filled container (3).

4. The liquid dispensing system according to claim 3, characterized in that: The adjusting plug (34) is vertically arranged and can be raised and lowered. The adjusting plug (34) has a connecting channel (341). The second valve body (32) and the third valve body (33) are both connected to the inside of the pre-filled container (3) through the connecting channel (341).

5. The liquid dispensing system according to claim 4, characterized in that: The interior of the pre-filled container (3) is a cylindrical space (35) with an open top, and the adjusting plug (34) is inserted into the cylindrical space (35).

6. The liquid dispensing system according to claim 1, characterized in that: The gas supply device (6) includes a gas supply mechanism (61) and a first connecting pipe (62). The gas supply mechanism (61) is connected to the pre-filled container (3) through the first connecting pipe (62). The third valve body (33) is located on the first connecting pipe (62).

7. The liquid dispensing system according to claim 6, characterized in that: The gas supply device (6) further includes a second connecting pipe (63) and a third connecting pipe (64). The gas supply device (6) is connected to the first valve body (31) through the second connecting pipe (63) and to the buffer tank (1) through the third connecting pipe (64). A fourth valve body (65) is provided on the second connecting pipe (63) and the third connecting pipe (64).

8. The liquid dispensing system according to claim 7, characterized in that: The gas supply mechanism (61) includes a gas supply pipeline (611) and a regulating valve (612) provided on the gas supply pipeline (611). The first connecting pipeline (62), the second connecting pipeline (63) and the third connecting pipeline (64) are all connected to the gas supply pipeline (611).

9. The liquid dispensing system according to any one of claims 1 to 8, characterized in that: It also includes a distributor (2) and a buffer tank (5). The bottom of the buffer tank (1) is connected to the distributor (2) through an outlet valve (11). The first valve body (31) is connected to the distributor (2). The inlet end of the buffer tank (1) is connected to an inlet device (8). The top of the buffer tank (5) is connected to the top of the buffer tank (1) through an on / off valve (51). The second valve body (32) is connected to the buffer tank (5).

10. The liquid dispensing system according to claim 9, characterized in that: The buffer tank (5) is located above the buffer tank (1), and the dispenser (2) is located below the buffer tank (1).

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