Filling needle cooling water system of blowing, filling and sealing all-in-one machine

Abstract

The utility model relates to a filling needle cooling water system of a blowing-filling-sealing all-in-one machine. A heat exchange water tank is connected with an external water pipe, and one end of the heat exchange water tank after heat exchange is connected with a heat exchange water tank water inlet pipe and a heat exchange water tank water return pipe; one ends, far away from the heat exchange water tank, of the heat exchange water tank water inlet pipe and the heat exchange water tank water return pipe are connected with filling needles; the temperature measuring water tank is arranged on the side, away from the heat exchange water tank, of the centrifugal pump, the waste water discharging pipe is arranged on the side, away from the centrifugal pump, of the temperature measuring water tank, and an air pressure assembly is arranged on a heat exchange water tank water return pipe close to the filling needle. A pressure sensor for measuring air pressure is arranged between the wastewater discharge pipe and the filling needle; according to the utility model, a pressure maintaining test function is added on the basis of the original filling needle cooling mechanism; chilled water in the pressure maintaining test pipeline is discharged through compressed air, and the influence of water pressure on the test result is removed; the pressure reducing valve is used to ensure stable test air pressure and improve the accuracy of test results; and the pressure sensor is used for feeding back an air pressure value in real time, so that a pressure measuring result is more persuasive.

Description

Technical Field

[0001] This utility model relates to the field of integrated blow-fill-seal equipment for pharmaceuticals and cosmetics, and in particular to a cooling water system for the filling needle of an integrated blow-fill-seal machine. Background Technology

[0002] The blow-fill-seal (BFS) machine is a highly integrated automated device primarily used in aseptic packaging, particularly in the pharmaceutical and food industries. Its core technology integrates blow molding, filling, and sealing into a single unit, completing these processes continuously in a closed environment, thus significantly improving production efficiency and product sterility.

[0003] In a filling and sealing machine, the filling needle is the core component of the filling module, which is directly related to the filling accuracy, sterility, and production efficiency. Usually, the filling needle needs to be circulated with chilled water for heat exchange and cooling after the product is sterilized at high temperature. It can also reduce the impact of the high temperature of the extruder on the filling needle and play a role in protecting the filling needle.

[0004] In existing blow-fill-seal machines, if the pipe wall between the product flow pipeline and the chilled water flow pipeline is damaged during the filling process, or if the sealing ring between the two is damaged, chilled water may leak into the product, thereby diluting the product, or even re-contaminating the sterilized product, causing significant losses.

[0005] The existing filling needle cooling mechanism needs to be upgraded with a filling needle pressure holding test to ensure that the product is not contaminated by chilled water during the filling process and to ensure product quality. Utility Model Content

[0006] To address the issue that existing needle cooling systems lack needle pressure holding tests and cannot guarantee that the product will not be contaminated by chilled water during the filling process, a needle cooling water system for an integrated blow-fill-seal machine is proposed.

[0007] The technical solution of this utility model is as follows: a cooling water system for the filling needle of a blow-fill-seal integrated machine, comprising a centrifugal pump, a hot water tank, a wastewater pipe, a pressure assembly, a temperature measuring water tank, an external water pipe, a hot water tank inlet pipe, and a hot water tank return pipe; the hot water tank is connected to the external water pipe, and one end of the hot water tank after heat exchange is connected to the hot water tank inlet pipe and the hot water tank return pipe; the ends of the hot water tank inlet pipe and the hot water tank return pipe away from the hot water tank are connected to the filling needle; the hot water tank inlet pipe is equipped with a centrifugal pump, a temperature measuring water tank, and a wastewater pipe, the temperature measuring water tank being located on the side of the centrifugal pump away from the hot water tank, and the wastewater pipe being located on the side of the temperature measuring water tank away from the centrifugal pump; a pressure assembly is located on the hot water tank return pipe near the filling needle; a pressure sensor for measuring air pressure is located between the wastewater pipe and the filling needle.

[0008] Preferably, the hot water exchange tank is equipped with a liquid level sensor for monitoring the water volume in the hot water exchange tank.

[0009] Preferably, the wastewater outlet at the bottom of the hot water tank is equipped with a manual ball valve for controlling sewage discharge.

[0010] Preferably, the external water pipe includes an external inlet pipe and an external return pipe, and the external inlet pipe is equipped with a self-excited temperature control valve for temperature control;

[0011] Preferably, the temperature measuring water tank outputs a control signal to the self-excited temperature control valve.

[0012] Preferably, the pneumatic assembly includes a pressure reducing valve, a gas check valve, and a water check valve; the water check valve is connected to the return water pipe of the hot water exchange tank via a pipe, the side of the water check valve away from the return water pipe of the hot water exchange tank is connected to the pressure reducing valve via a pipe, and the side of the pressure reducing valve away from the water check valve is connected to the gas check valve.

[0013] Preferably, a return water solenoid valve is provided on the return water pipe of the hot water tank between the air pressure component and the hot water tank.

[0014] Preferably, the wastewater discharge pipe is equipped with a drain solenoid valve.

[0015] Preferably, a manual needle valve and a temperature sensor for controlling water flow are provided on the inlet pipe of the hot water tank between the centrifugal pump and the temperature measuring water tank; the manual needle valve is located near the centrifugal pump, and the temperature sensor is located on the side of the manual needle valve away from the centrifugal pump.

[0016] Preferably, a float flow meter and an inlet solenoid valve for detecting flow rate are provided on the inlet pipe of the hot water exchange tank between the temperature measuring water tank and the wastewater discharge pipe; the float flow meter is located near the temperature measuring water tank, and the inlet solenoid valve is located on the side of the float flow meter away from the temperature measuring water tank.

[0017] The beneficial effects of this utility model are as follows: This utility model adds a pressure holding test function to the original needle cooling mechanism; it uses solenoid valves to cut off the water path at the inlet and outlet of the needle cooling system, making the pressure holding test pipeline independent, thus laying a good foundation for subsequent pressure testing; it uses compressed air to discharge the chilled water in the pressure holding test pipeline, eliminating the influence of water pressure on the test results; it uses a pressure reducing valve to ensure stable test air pressure, improving the accuracy of the test results; it uses a pressure sensor to provide real-time feedback of air pressure values, making the pressure test results more convincing; it adds one-way valves for air and one-way valves for water before and after the pressure reducing valve to prevent chilled water from flowing back into other structures; and it uses a level sensor on the hot water tank to provide feedback on the water level in the tank, promptly reminding operators to replenish the chilled water lost during testing, without affecting production after the equipment pressure test. Attached Figure Description

[0018] Figure 1This is a flowchart of the filling needle cooling water system of the blow-fill-seal integrated machine of this utility model;

[0019] Figure 2 This is a perspective view of the cooling water system for the filling needle of the blow-fill-seal integrated machine of this utility model.

[0020] Figure 3 This is a front view of the filling needle cooling water system of the blow-fill-seal integrated machine of this utility model.

[0021] The component names corresponding to the various reference numerals in the diagram are as follows:

[0022] 1. Centrifugal pump; 2. Hot water tank; 21. Manual ball valve; 22. Liquid level sensor; 3. Wastewater drain pipe; 31. Drain solenoid valve; 4. Pneumatic assembly; 41. Pressure reducing valve; 42. Gas check valve; 43. Water check valve; 5. Temperature measuring water tank; 6. External water pipe; 61. External inlet pipe; 611. Self-excited thermostatic valve; 62. External return pipe; 7. Hot water tank inlet pipe; 71. Manual needle valve; 72. Temperature sensor; 73. Float flow meter; 74. Inlet solenoid valve; 8. Hot water tank return pipe; 81. Return solenoid valve; 9. Pressure sensor. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0024] refer to Figure 1 , 2 As shown in the embodiment of this application, a filling needle cooling water system for an integrated blow-fill-seal machine is disclosed, including a centrifugal pump 1, a hot water exchange tank 2, a wastewater discharge pipe 3, a pneumatic assembly 4, a temperature measuring water tank 5, an external water pipe 6, a hot water exchange tank inlet pipe 7, and a hot water exchange tank return pipe 8; the hot water exchange tank 2 is connected to the external water pipe 6, and one end of the hot water exchange tank 2 after heat exchange is connected to the hot water exchange tank inlet pipe 7 and the hot water exchange tank return pipe 8; the ends of the hot water exchange tank inlet pipe 7 and the hot water exchange tank return pipe 8 away from the hot water exchange tank 2 are connected to the filling needle; heat exchange... A centrifugal pump 1, a temperature measuring water tank 5, and a wastewater discharge pipe 3 are installed on the water inlet pipe 7. The temperature measuring water tank 5 is located on the side of the centrifugal pump 1 away from the hot water exchange tank 2 and is used to provide feedback on the flowing water temperature. The wastewater discharge pipe 3 is located on the side of the temperature measuring water tank 5 away from the centrifugal pump 1. A pressure assembly 4 is installed on the return water pipe 8 of the hot water exchange tank near the filling needle. The pressure assembly 4 is used to test the pressure. A pressure sensor 9 for measuring air pressure is installed between the wastewater discharge pipe 3 and the filling needle. The signal from the pressure sensor 9 is transmitted to the PLC controller of the system.

[0025] refer to Figure 1 , 3As shown, the hot water exchange tank 2 is equipped with a liquid level sensor 22 to monitor the water volume in the hot water exchange tank 2.

[0026] The wastewater outlet at the bottom of the hot water tank 2 is equipped with a manual ball valve 21 to control the sewage discharge.

[0027] The external water pipe 6 includes an external inlet pipe 61 and an external return pipe 62. The external inlet pipe 61 is equipped with a self-excited temperature control valve 611 for temperature control. The temperature measuring water tank 5 outputs a control signal to the self-excited temperature control valve 611.

[0028] The pneumatic assembly 4 includes a pressure reducing valve 41, a gas check valve 42, and a water check valve 43. The water check valve 43 is connected to the return water pipe 8 of the hot water exchange tank via a pipe. The side of the water check valve 43 away from the return water pipe 8 of the hot water exchange tank is connected to the pressure reducing valve 41 via a pipe. The side of the pressure reducing valve 41 away from the water check valve 43 is connected to the gas check valve 42. The pressure reducing valve 41 is used to regulate the gas pressure, while the gas check valve 42 and the water check valve 43 prevent backflow.

[0029] A return water solenoid valve 81 is installed on the return water pipe 8 of the hot water exchange tank between the air pressure component 4 and the hot water exchange tank 2. The return water solenoid valve 81 is controlled by the PLC controller of the system.

[0030] The wastewater discharge pipe 3 is equipped with a drain solenoid valve 31, which is controlled by the system's PLC controller.

[0031] A manual needle valve 71 and a temperature sensor 72 for controlling water flow are provided on the inlet pipe 7 of the hot water tank between the centrifugal pump 1 and the temperature measuring water tank 5. The manual needle valve 71 is located near the centrifugal pump 1, and the temperature sensor 72 is located on the side of the manual needle valve 71 away from the centrifugal pump 1. The signal of the temperature sensor 72 is transmitted to the PLC controller of the system.

[0032] A float flowmeter 73 and an inlet solenoid valve 74 for detecting flow rate are installed on the inlet pipe 7 of the hot water exchange tank between the temperature measuring water tank 5 and the wastewater discharge pipe 3. The float flowmeter 73 is located near the temperature measuring water tank 5, and the inlet solenoid valve 74 is located on the side of the float flowmeter 73 away from the temperature measuring water tank 5. The inlet solenoid valve 74 is controlled by the PLC controller of the system.

[0033] The specific working method is as follows:

[0034] When a pressure holding test is required, open the inlet solenoid valve 74, the return solenoid valve 81, and the drain solenoid valve 31 to stop the centrifugal pump 1 in the filling cooling pipeline. Then, introduce pressurized compressed air into the pipeline and maintain this pressure for a period of time to drain the chilled water from the pipeline. Close the drain solenoid valve 31 and continue venting until the pressure sensor 75 stabilizes at a certain value, then close the venting. Maintain this pressure for a further period and calculate the air pressure leakage during this time, comparing it to the normal leakage rate. If the leakage is small, it confirms that chilled water has not leaked into the product; otherwise, leakage is possible, and the filling needle needs to be disassembled for more precise testing.

[0035] In this preferred embodiment, the inlet solenoid valve 74 and the return solenoid valve 81 are normally open, while the drain solenoid valve 31 is normally closed. The solenoid valves are only activated during the pressure test, thus extending their service life.

[0036] Gas check valve 42 and water check valve 43 are added before and after pressure reducing valve 41 to provide double protection and prevent chilled water from flowing back into other structures.

[0037] This pressure-holding test structure can only alert operators to the risk of chilled water leakage; operators need to disassemble the injection needle for more precise testing.

[0038] The beneficial effects are as follows: This utility model adds a pressure holding test function to the original needle cooling mechanism; uses solenoid valves to cut off the water path at the inlet and outlet of the needle cooling, making the pressure holding test pipeline independent, laying a good foundation for subsequent pressure testing; uses compressed air to discharge the chilled water in the pressure holding test pipeline, eliminating the influence of water pressure on the test results; uses a pressure reducing valve 41 to ensure stable test air pressure, improving the accuracy of test results; uses a pressure sensor 9 to provide real-time feedback of air pressure values, making the pressure test results more convincing; adds a gas check valve 42 and a water check valve 43 before and after the pressure reducing valve 41 to prevent chilled water from flowing back into other structures; the liquid level sensor 22 on the hot water tank 2 provides feedback on the water level in the tank, promptly reminding operators to replenish the chilled water lost during testing, without affecting production after the equipment pressure test.

[0039] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used 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. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. A cooling water system for the filling needle of a blow-fill-seal integrated machine, characterized in that, It includes a centrifugal pump (1), a hot water exchange tank (2), a wastewater discharge pipe (3), a pneumatic assembly (4), a temperature measuring water tank (5), an external water pipe (6), a hot water exchange tank inlet pipe (7), and a hot water exchange tank return pipe (8); the hot water exchange tank (2) is connected to the external water pipe (6), and one end of the hot water exchange tank (2) after heat exchange is connected to the hot water exchange tank inlet pipe (7) and the hot water exchange tank return pipe (8); the hot water exchange tank inlet pipe (7) and the hot water exchange tank return pipe (8) are located away from the hot water exchange tank (2). One end is connected to the injection needle; the inlet pipe (7) of the hot water tank is equipped with a centrifugal pump (1), a temperature measuring water tank (5), and a wastewater discharge pipe (3). The temperature measuring water tank (5) is located on the side of the centrifugal pump (1) away from the hot water tank (2), and the wastewater discharge pipe (3) is located on the side of the temperature measuring water tank (5) away from the centrifugal pump (1). A pressure assembly (4) is provided near the injection needle on the return pipe (8) of the hot water tank; a pressure sensor (9) for measuring air pressure is provided between the wastewater discharge pipe (3) and the injection needle.

2. The filling needle cooling water system of the blow-fill-seal integrated machine according to claim 1, characterized in that, The hot water tank (2) is equipped with a liquid level sensor (22) for monitoring the water volume of the hot water tank (2).

3. The filling needle cooling water system of the blow-fill-seal integrated machine according to claim 1, characterized in that, The wastewater outlet at the bottom of the hot water tank (2) is equipped with a manual ball valve (21) for controlling sewage discharge.

4. The filling needle cooling water system of the blow-fill-seal integrated machine according to claim 1, characterized in that, The external water pipe (6) includes an external water inlet pipe (61) and an external water return pipe (62). The external water inlet pipe (61) is equipped with a self-excited temperature control valve (611) for temperature control.

5. The cooling water system for the filling needle of the blow-fill-seal integrated machine according to claim 1, characterized in that, The temperature measuring water tank (5) outputs a control signal to the self-excited temperature control valve (611).

6. The filling needle cooling water system of the blow-fill-seal integrated machine according to claim 1, characterized in that, The pneumatic assembly (4) includes a pressure reducing valve (41), a gas check valve (42), and a water check valve (43). The water check valve (43) is connected to the return water pipe (8) of the hot water exchange tank through a pipe. The side of the water check valve (43) away from the return water pipe (8) of the hot water exchange tank is connected to the pressure reducing valve (41) through a pipe. The side of the pressure reducing valve (41) away from the water check valve (43) is connected to the gas check valve (42).

7. The filling needle cooling water system of the blow-fill-seal integrated machine according to claim 1, characterized in that, A return water solenoid valve (81) is provided on the return water pipe (8) of the hot water exchange tank between the air pressure component (4) and the hot water exchange tank (2).

8. The cooling water system for the filling needle of the blow-fill-seal integrated machine according to claim 1, characterized in that, The wastewater discharge pipe (3) is equipped with a drain solenoid valve (31).

9. The filling needle cooling water system of the blow-fill-seal integrated machine according to claim 1, characterized in that, A manual needle valve (71) and a temperature sensor (72) for controlling water flow are provided on the inlet pipe (7) of the hot water tank between the centrifugal pump (1) and the temperature measuring water tank (5); the manual needle valve (71) is located near the centrifugal pump (1), and the temperature sensor (72) is located on the side of the manual needle valve (71) away from the centrifugal pump (1).

10. The filling needle cooling water system of the blow-fill-seal integrated machine according to claim 1, characterized in that, A float flowmeter (73) and an inlet solenoid valve (74) for detecting flow rate are provided on the inlet pipe (7) of the hot water exchange tank between the temperature measuring water tank (5) and the wastewater discharge pipe (3); the float flowmeter (73) is located near the temperature measuring water tank (5), and the inlet solenoid valve (74) is located on the side of the float flowmeter (73) away from the temperature measuring water tank (5).

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