Quantitative liquid filling device

Abstract

The utility model relates to the technical field of liquid filling, and discloses a liquid quantitative filling device which comprises a base, a supporting frame is fixed on the base, and a liquid storage box is fixed on the supporting frame. A filling mechanism is installed in the supporting frame and comprises a piston cylinder used for quantitatively feeding liquid, and the piston cylinder is fixedly connected with the supporting frame. A piston is slidably mounted in the piston cylinder and fixedly connected with a piston rod. A rodless cavity of the piston cylinder is communicated with the liquid storage tank through a connecting pipe; a filling pipe communicated with the rodless cavity is fixedly arranged on the piston cylinder, a cleaning assembly for removing liquid stored on the pipe wall is arranged on the filling pipe, and the cleaning assembly is matched with the piston; an air inlet is formed in the piston cylinder and is communicated with a rod cavity; and one-way valves are fixedly mounted at the communicating parts of the connecting pipe, the filling pipe and the piston cylinder. The cleaning assembly is arranged, so that liquid adhered to the inner wall of the filling pipe can be effectively removed, the liquid is cleaned into the tank body, and the liquid is prevented from dripping from the filling pipe.

Description

Technical Field

[0001] This utility model relates to the field of liquid filling technology, and in particular to a liquid quantitative filling device. Background Technology

[0002] Liquid quantitative filling is a process that precisely fills liquid materials into predetermined containers and is widely used in the food, beverage, pharmaceutical, and chemical industries.

[0003] The announcement number CN220131873U describes a quantitative filling device for liquid medical dressings, which includes a chassis. A support frame is installed on the top of the chassis. A filling mechanism is provided between the support frame and the chassis. The filling mechanism includes a storage section installed on the support frame and a plurality of quantitative filling sections installed on the top of the chassis. The quantitative filling sections are connected to the storage section.

[0004] Based on the above technical features, the problem is that after filling, the liquid in the existing liquid quantitative filling device tends to stick to the inner wall of the filling tube, causing the liquid to drip onto the tank and the worktable on which the tank is placed. This can easily lead to liquid waste and also soil the tank and the worktable.

[0005] Therefore, it is necessary to solve the above problems by means of a liquid metering filling device. Utility Model Content

[0006] The purpose of this invention is to provide a liquid quantitative filling device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a liquid quantitative filling device, comprising a base, a support frame fixed on the base, and a liquid storage tank fixed on the support frame; a filling mechanism installed inside the support frame, the filling mechanism including a piston cylinder for quantitative liquid delivery, the piston cylinder being fixedly connected to the support frame; a piston slidably installed inside the piston cylinder, the piston being fixedly connected to a piston rod; the rodless chamber of the piston cylinder communicating with the liquid storage tank via a connecting pipe; a filling tube communicating with the rodless chamber fixedly installed on the piston cylinder, the filling tube being provided with a cleaning component for removing liquid from the tube wall, the cleaning component cooperating with the piston; an air inlet opened on the piston cylinder, the air inlet communicating with the rod chamber; and a one-way valve fixedly installed at the connection points of the connecting pipe, the filling tube, and the piston cylinder.

[0008] Preferably, the cleaning assembly includes an air blowing pipe, which is fixedly connected to the filling pipe and the rod chamber of the piston cylinder; a one-way valve is fixedly installed at the connection between the air blowing pipe and the filling pipe and in the air inlet of the piston cylinder.

[0009] Preferably, an electric push rod is fixedly installed inside the support frame, and the telescopic shaft of the electric push rod is coaxially and fixedly connected to the piston rod.

[0010] Preferably, a conveyor belt for conveying the tank is installed on the side of the base.

[0011] Preferably, an injection pipe is fixedly installed on the liquid storage tank, and the injection pipe is connected to the liquid storage tank.

[0012] The technical effects and advantages of this utility model are as follows: The cleaning component of this utility model can effectively remove the liquid adhering to the inner wall of the filling tube, thereby cleaning the liquid into the tank and preventing the liquid from dripping from the filling tube. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of the support frame of this utility model;

[0015] Figure 3 This is a schematic diagram of the inside of the piston cylinder of this utility model.

[0016] In the diagram: 1. Base; 2. Support frame; 3. Conveyor belt; 4. Liquid storage tank; 5. Injection pipe; 6. Connecting pipe; 7. Electric push rod; 8. Connecting plate; 9. Air blowing pipe; 10. Piston cylinder; 11. Filling pipe; 12. First check valve; 13. Piston; 14. Second check valve; 15. Third check valve; 16. Fourth check valve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Example 1: This utility model provides the following... Figures 1 to 3 A liquid metering filling device is shown, including a base 1. A support frame 2 is welded to the top of the base 1, and a liquid storage tank 4 is welded to the top of the support frame 2.

[0019] A liquid injection pipe 5 is welded and fixed to the top of the liquid storage tank 4, and the liquid injection pipe 5 is connected to the liquid storage tank 4. The liquid storage tank 4 is used to store the filled liquid.

[0020] A conveyor belt 3 is installed on the side of the base 1. The conveyor belt 3 moves horizontally and the tank is placed on the conveyor belt 3.

[0021] A filling mechanism is installed inside the support frame 2. The filling mechanism is used to inject the liquid in the storage tank 4 into the tank body in a metered manner.

[0022] The filling mechanism includes a piston cylinder 10 for quantitative liquid delivery. A fixed connecting plate 8 is welded to the outer cylinder body of the piston cylinder 10, and the connecting plate 8 is fixedly connected to the support frame 2. A matching piston 13 is slidably installed inside the piston cylinder 10, and the piston rod is fixedly connected to the piston 13. An electric push rod 7 is bolted to the support frame 2, and the telescopic shaft of the electric push rod 7 is coaxially fixedly connected to the piston rod.

[0023] A connecting pipe 6 is provided between the piston cylinder 10 and the liquid storage tank 4, connecting the rodless chamber of the piston cylinder 10 and the liquid storage tank 4. A one-way valve, specifically a fourth one-way valve 16, is fixedly installed at the connection point between the connecting pipe 6 and the piston cylinder 10. The fourth one-way valve 16 is used to prevent liquid in the rodless chamber of the piston cylinder 10 from flowing back into the liquid storage tank 4.

[0024] A filling pipe 11 is fixedly installed on the piston cylinder 10, and the filling pipe 11 is connected to the rodless chamber of the piston cylinder 10. The liquid outlet of the filling pipe 11 corresponds to the tank opening, and a one-way valve, a third one-way valve 15, is also fixedly installed at the connection between the filling pipe 11 and the piston cylinder 10. The third one-way valve 15 is used to prevent liquid in the filling pipe 11 from flowing back into the piston cylinder 10.

[0025] An air inlet is provided on the piston cylinder 10, which is connected to the sensing chamber of the piston cylinder 10. A one-way valve, namely the first one-way valve 12, is also fixedly installed inside the air inlet. The first one-way valve 12 is used to prevent gas in the rod chamber of the piston cylinder 10 from flowing out of the air inlet.

[0026] The air inlet, the connection point between the filling pipe 11 and the piston cylinder 10, and the connection point between the connecting pipe 6 and the piston cylinder 10 are all located at the axial end of the piston cylinder 10.

[0027] A cleaning assembly for removing liquid residue from the pipe wall is installed on the filling tube 11, and the cleaning assembly cooperates with the piston 13. The cleaning assembly includes an air blowing pipe 9, which is fixedly connected to the rod chamber of the filling tube 11 and the piston cylinder 10. A one-way valve is also fixedly installed at the connection between the air blowing pipe 9 and the filling tube 11. This one-way valve is a second one-way valve 14, which is used to prevent gas and liquid from flowing back into the filling tube 11.

[0028] The connection between the air pipe 9 and the rod chamber of the piston cylinder 10 is also located at the axial end of the piston cylinder 10.

[0029] Working principle of Example 1: When quantitatively filling liquid, the electric push rod 7 is first activated, and the telescopic shaft of the electric push rod 7 retracts. At this time, the telescopic shaft of the electric push rod 7 drives the piston rod to extend out of the piston cylinder 10, and the piston rod drives the piston 13 to approach the electric push rod 7.

[0030] During this process, the first one-way valve 12 closes the air inlet, the second one-way valve 14 opens the connection between the air blowing pipe 9 and the filling pipe 11, the third one-way valve 15 closes the connection between the filling pipe 11 and the piston cylinder 10, and the fourth one-way valve 16 opens the connection between the connecting pipe 6 and the piston cylinder 10.

[0031] Meanwhile, the liquid in the storage tank 4 is drawn into the rodless chamber of the piston cylinder 10 through the connecting pipe 6. The amount of liquid drawn into the piston cylinder 10 is determined by the sliding stroke of the piston 13, thereby determining the amount of liquid injected into the tank at one time, thus achieving quantitative measurement.

[0032] When the piston 13 slides, it pushes the air in the rod chamber of the piston cylinder 10 into the air blowing pipe 9. The gas is blown into the filling pipe 11 through the air blowing pipe 9. The gas is blown out of the filling pipe 11 and blows out impurities and dust in the filling pipe 11.

[0033] The can is then placed on conveyor belt 3, which transports it directly below filling pipe 11, with the outlet of filling pipe 11 aligned with the can opening. Next, the telescopic shaft of electric push rod 7 extends, causing the piston rod to retract into piston cylinder 10. The piston rod then causes piston 13 to slide away from electric push rod 7.

[0034] During this process, the first one-way valve 12 opens the air inlet, the second one-way valve 14 closes the connection between the air blowing pipe 9 and the filling pipe 11, the third one-way valve 15 opens the connection between the filling pipe 11 and the piston cylinder 10, and the fourth one-way valve 16 closes the connection between the connecting pipe 6 and the piston cylinder 10.

[0035] At the same time, piston 13 pushes the liquid in the rodless chamber of piston cylinder 10 into filling pipe 11, and the liquid flows into the tank through filling pipe 11.

[0036] When piston 13 slides, the gas in piston cylinder 10 is drawn into the rod chamber of piston cylinder 10 through the air inlet.

[0037] After all the liquid in the rodless chamber of piston cylinder 10 has flowed out, the telescopic shaft of electric push rod 7 retracts again. At this time, the liquid in storage tank 4 flows back into the rodless chamber of piston cylinder 10, and the gas in the rod chamber of piston cylinder 10 is blown back into filling tube 11. During this process, the gas blown into filling tube 11 blows the residual liquid on the inner wall of filling tube 11 into the tank, thus ensuring that no liquid remains in filling tube 11.

[0038] This cycle continues until the liquid inside the tank reaches the predetermined level.

[0039] Example 2: This example is a further optimization of Example 1. Multiple filling mechanisms can be installed within the support frame 2 according to the type of liquid being filled. These multiple filling mechanisms are arranged in a line along the conveyor belt 3. They are used to fill different types of liquids into the tank.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liquid metering filling device, comprising a base (1), characterized in that: A support frame (2) is fixed on the base (1), and a liquid storage tank (4) is fixed on the support frame (2). A filling mechanism is installed inside the support frame (2), and the filling mechanism includes a piston cylinder (10) for quantitative liquid delivery. The piston cylinder (10) is fixedly connected to the support frame (2). A piston (13) is slidably installed inside the piston cylinder (10), and the piston (13) is fixedly connected to a piston rod. The rodless chamber of the piston cylinder (10) is connected to the liquid storage tank (4) through a connecting pipe (6). A filling pipe (11) connected to the rodless chamber is fixedly installed on the piston cylinder (10), and a cleaning component for removing liquid from the pipe wall is installed on the filling pipe (11). The cleaning component cooperates with the piston (13). An air inlet is opened on the piston cylinder (10), and the air inlet is connected to the rod chamber. A one-way valve is fixedly installed at the connection points of the connecting pipe (6), the filling pipe (11), and the piston cylinder (10).

2. The liquid metering filling device according to claim 1, characterized in that: The cleaning assembly includes an air blowing pipe (9), which is fixedly connected to the filling pipe (11) and the rod chamber of the piston cylinder (10); a one-way valve is fixedly installed at the connection between the air blowing pipe (9) and the filling pipe (11) and in the air inlet of the piston cylinder (10).

3. The liquid quantitative filling device according to claim 1, characterized in that: An electric push rod (7) is fixedly installed inside the support frame (2), and the telescopic shaft of the electric push rod (7) is coaxially and fixedly connected to the piston rod.

4. The liquid metering filling device according to claim 1, characterized in that: The conveyor belt (3) for conveying the tank is installed on the side of the base (1).

5. The liquid metering filling device according to claim 1, characterized in that: A liquid injection pipe (5) is fixedly installed on the liquid storage tank (4), and the liquid injection pipe (5) is connected to the liquid storage tank (4).

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