Filling leakage detection system of continuous blowing, filling and sealing all-in-one machine

Abstract

The utility model discloses a filling leakage detection system of a continuous blowing, filling and sealing all-in-one machine, which relates to the technical field of pharmacy and packaging equipment and comprises a plurality of filling needles 2 movably arranged in an extrusion die head 1 in a penetrating manner, a jacket 3 is sleeved outside the filling needles 2, a first channel 4 is formed between the jacket 3 and the filling needles 2 and is connected with a flow dividing seat 20, and the flow dividing seat 20 is connected with the filling needles 2. The shunting seat 20 is connected with a closed loop 5, and the closed loop 5 is provided with a pressure detection piece 8 and a detection channel used for inflating and deflating the closed loop 5. The filling leakage detection system of the continuous blowing, filling and sealing all-in-one machine has the advantages of being simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of pharmaceutical and packaging equipment, and particularly relates to a filling leakage detection system for a continuous blow-fill-seal integrated machine. Background Art

[0002] A continuous blow-fill-seal integrated machine includes a filling device, a mold device arranged below the filling device, and an extrusion die head for supplying blanks to the mold device. A filling needle passes through the extrusion die head to fill the formed container. When filling, the filling needle needs to pass through the extrusion die head with a relatively high temperature. To avoid the influence of the high temperature on the filling effect and product properties, a cooling system is required to cool the filling needle. The cooling medium is very close to the filling needle. If there is a leak in the filling needle part of the cooling system and the cooling water enters the product area of the filling needle, the product will be contaminated and the produced product will not meet the requirements.

[0003] The existing leakage detection scheme is to verify whether there is a leak through a pressure holding test, that is, to introduce gas into the cooling channel of the filling needle and read the value of the pressure detection component after holding the pressure for a certain period of time, and judge whether there is a leak through the change of the pressure detection component data. However, when filling different products, such as liquids, pastes, suspensions and other different products, due to different product properties, the cooling effect on the filling needle is different, and the temperature has different influences on the pressure value and the degree of pressure drop. The numerical results of the pressure detection components obtained by the pressure holding test for different products are all different, resulting in the inability to judge whether there is a leak and the inability to verify the leakage detection result. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a filling leakage detection system and method for a continuous blow-fill-seal integrated machine with a simple structure and convenient operation.

[0005] To solve the above technical problem, the utility model adopts the following technical solutions:

[0006] A filling leakage detection system for a continuous blow-fill-seal integrated machine includes a plurality of filling needles 2 movably penetrating inside an extrusion die head 1. A jacket 3 is sleeved outside the filling needles 2. A first channel 4 is formed between the jacket 3 and the filling needles 2. The first channel 4 is connected to a flow dividing seat 20. The flow dividing seat 20 is connected to a closed loop 5. A pressure detection component 8 and a detection channel for inflating and deflating the closed loop 5 are arranged on the closed loop 5.

[0007] As a further improvement of the above technical solution:

[0008] The detection channel includes a first channel 9 and a third channel 10. A third valve 11 and an air inlet 12 are arranged on the second channel 9. A fourth valve 13 and a leakage port 14 are arranged on the third channel 10.

[0009] The closed loop 5 is a heat exchange medium loop. A first valve 6 and a second valve 7 are provided on the heat exchange medium loop. A pressure detector 8, a first channel 4, a second channel 9 and a third channel 10 are connected to the heat exchange medium loop between the first valve 6 and the second valve 7.

[0010] Both ends of the heat exchange medium loop are connected to a water tank 15, and a water pump 16 is provided on the heat exchange medium loop.

[0011] A filter 17 is provided on the third channel 10.

[0012] A throttle valve 18 and a flow meter 19 are provided on the heat exchange medium loop 5, and the throttle valve 18 is arranged between the water pump 16 and the first channel 4.

[0013] The flow dividing seat 20 is connected to the closed loop 5 through a hose 21.

[0014] The aperture of the leakage port 14 is 50 to 100 microns.

[0015] A connector is provided on the detection channel, and a leakage port 14 is provided on the connector.

[0016] The connector is detachably connected to the detection channel.

[0017] Compared with the prior art, the advantages of the present utility model are as follows:

[0018] The filling leakage detection system of the continuous blow-fill-seal integrated machine of the present utility model inflates and deflates the closed loop 5 through the detection channel connected to the closed loop 5, reads the value of the pressure detector 8 provided on the closed loop 5, and judges whether there is a leakage problem in the first channel 4 and the flow dividing seat 20 of multiple filling needles 2 connected to the closed loop 5 by comparing the pressure reduction value after inflation and the pressure reduction value after deflation. The structure is simple and the operation is convenient. Description of the Drawings

[0019] Figure 1 It is the first structural schematic diagram of the filling leakage detection system of the continuous blow-fill-seal integrated machine of the present utility model;

[0020] Figure 2 It is the second structural schematic diagram of the filling leakage detection system of the continuous blow-fill-seal integrated machine of the present utility model;

[0021] Figure 3 It is the third structural schematic diagram of the filling leakage detection system of the continuous blow-fill-seal integrated machine of the present utility model;

[0022] Figure 4 It is the cross-sectional view of the filling device of a filling leakage detection system of a continuous blow-fill-seal integrated machine of the present utility model;

[0023] Figure 5 is Figure 4 an enlarged view of area A;

[0024] Figure 6 is a schematic structural view of the filling device of the filling leakage detection system of the continuous blow-fill-seal integrated machine of the present utility model.

[0025] Description of the reference numerals of the present utility model in the figure: 1. Extrusion die head; 2. Filling needle; 3. Jacket; 4. First channel; 5. Closed loop; 6. First valve; 7. Second valve; 8. Pressure detection element; 9. Second channel; 10. Third channel; 11. Third valve; 12. Air inlet; 13. Fourth valve; 14. Leakage port; 15. Water tank; 16. Water pump; 17. Filter; 18. Throttle valve; 19. Flowmeter; 20. Shunt seat; 21. Hose; 22. Filling seat; 23. Air inlet seat; 24. Sealing seat; 25. Cooling medium inlet pipe; 26. Cooling medium outlet pipe. Specific embodiments

[0026] The present utility model will be further described in detail below in conjunction with the specification drawings and specific embodiments.

[0027] As Figures 4 to 6 shown, the filling needle mechanism of the continuous blow-fill-seal integrated machine includes a filling seat 22, a shunt seat 20, an air inlet seat 23 and a sealing seat 24 arranged in sequence from top to bottom. The shunt seat 20 is provided with a cooling medium inlet pipe 25 and a cooling medium outlet pipe 26 for inputting cooling medium into the first channel 4 to cool the filling needle 2 and outputting the cooling medium to achieve heat exchange. When the continuous blow-fill-seal integrated machine is running, the filling seat 22 transports the product to the inside of the tube blank through the filling needle, the air inlet seat 23 transports sterile gas to the inside of the tube blank, and the air inlet seat 23 moves up and down in the sealing seat 24, driving the filling needle 2 to move up and down inside the extrusion die head 1. The mold (not shown in the figure) forms the tube blank into a container and seals the liquid of the filling needle in the container.

[0028] As Figures 1 to 3As shown in the figure, a leakage detection system for a continuous blow-fill-seal integrated machine includes multiple filling needles 2 movably inserted inside an extrusion die head 1. A jacket 3 is sleeved outside the filling needles 2, and a first channel 4 is formed between the jacket 3 and the filling needles 2. The first channel 4 is connected to a shunt base 20, and the shunt base 20 is connected to a closed loop 5. A pressure detection member 8 and a detection channel for inflating and deflating the closed loop 5 are provided on the closed loop 5. The detection channel includes a first channel 9 and a third channel 10. A third valve 11 and an air inlet 12 are provided on the second channel 9, and a fourth valve 13 and a leakage port 14 are provided on the third channel 10. The second channel 9 and the third channel 10 can be respectively connected to the closed loop 5, or the second channel 9 is connected to the third channel 10, and then the third channel 10 is connected to the closed loop 5.

[0029] The closed loop 5 is a heat exchange medium loop. A first valve 6 and a second valve 7 are provided on the heat exchange medium loop. A pressure detection member 8, a first channel 4, a second channel 9, and a third channel 10 are connected to the heat exchange medium loop between the first valve 6 and the second valve 7. Both ends of the heat exchange medium loop are connected to a water tank 15. A water pump 16 is provided on the heat exchange medium loop for inputting cooling water into the first channel 4 to cool the filling needles 2. A filter 17 is provided on the third channel 10 to filter the gas through the filter 17 to prevent the leaked gas from polluting the environment. A throttle valve 18 and a flow meter 19 are provided on the heat exchange medium loop 5 for controlling the flow rate of the cooling water in the first channel 4. The throttle valve 18 is arranged between the water pump 16 and the first channel 4. The air intake and air leakage detection are carried out on the original heat exchange medium loop, which is convenient for docking and can also detect the leakage of the heat exchange medium loop. When leakage detection is required, the first valve 6 and the second valve 7 need to be closed first, and then the inflation and deflation are carried out.

[0030] The shunt base 20 is connected to the closed loop 5 through a hose 21. The connection through the hose 21 is convenient for disassembly and assembly.

[0031] The aperture of the leakage port 14 is 50 to 100 microns, which can more significantly show the pressure drop situation and is convenient for comparison.

[0032] A joint is provided on the detection channel, and a leakage port 14 is provided on the joint, which is convenient for processing the leakage port 14 on the joint.

[0033] The joint is detachably connected to the detection channel. The inflation and deflation can share the same pipeline by disassembling and assembling the joint. First, the closed loop 5 is inflated through the detection channel, and then the valve is closed for pressure holding and the value is recorded. Then, the joint with the leakage port 14 is assembled to the detection channel, and the valve is opened for deflation and the value is recorded.

[0034] Detection method: Step 1, adjust the temperature of the extrusion die head to ensure that the extrusion die head heating is turned off or the extrusion die head heating is turned on and maintained at a stable temperature. When the extrusion die head heating is turned off, the temperature is below 30 °C, preferably 22 °C. When the extrusion die head heating is turned on, the temperature is stably maintained at 105 °C to complete the environmental preparation for leakage detection; Step 2, inject gas and read the value of the pressure detector 8 in the closed loop 5 as the first value. After waiting for a set time, read the value of the pressure detector 8 as the second value; Step 3, release the gas injected into the channel, then inject gas and read the value of the pressure detector 8 as the third value. Vent the closed loop 5 through the leakage hole, and after waiting for a set time, read the pressure detection value as the fourth value.

[0035] Specifically, when the temperature of the extrusion die head is 22 °C, leak detection is performed on the heat exchange medium circuit, the manifold 20, and the first channel 4. In Step 2, the difference between the first value read when injecting gas and the second value read after waiting for 10 minutes is 0 to 0.005 bar; in Step 3, the difference between the third value read when injecting gas and the fourth value read after waiting for ten minutes varies depending on the aperture of the leakage port 14. When the aperture is 50 microns, the difference is 0.247 to 0.152 bar; when the aperture is 100 microns, the difference is 0.507 to 0.654 bar. The pressure reduction value in Step 3 with the leakage port 14 is much greater than the pressure reduction value in Step 2 without the leakage port 14, which indicates that in the current filling needle's first channel 4, manifold 20, and closed loop 5, there are no leakage holes with a diameter greater than or equal to 50 microns, thus realizing the leakage detection and verification of the continuous blow-fill-seal machine.

[0036] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present utility model. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A leakage detection system for a continuous blow-fill-seal integrated machine, characterized in that, It includes multiple filling needles (2) movably inserted inside an extrusion die head (1). A jacket (3) is sleeved outside the filling needles (2). A first channel (4) is formed between the jacket (3) and the filling needles (2). The first channel (4) is connected to a flow dividing seat (20). The flow dividing seat (20) is connected to a closed loop (5). A pressure detecting member (8) and a detection channel for inflating and deflating the closed loop (5) are provided on the closed loop (5).

2. The leakage detection system for continuous blow-fill-seal integrated machine according to claim 1, wherein The detection channel includes a second channel (9) and a third channel (10). A third valve (11) and an air inlet (12) are provided on the second channel (9). A fourth valve (13) and a leakage port (14) are provided on the third channel (10).

3. The leak detection system for filling in the continuous blow-fill-seal integrated machine according to claim 2, characterized in that, The closed loop (5) is a heat exchange medium loop. A first valve (6) and a second valve (7) are provided on the heat exchange medium loop. The pressure detecting member (8), the first channel (4), the second channel (9) and the third channel (10) are connected to the heat exchange medium loop between the first valve (6) and the second valve (7).

4. The leak detection system for filling in the continuous blow-fill-seal integrated machine according to claim 3, characterized in that, Both ends of the heat exchange medium loop are connected to a water tank (15). A water pump (16) is provided on the heat exchange medium loop.

5. The leak detection system for the continuous blow-fill-seal integrated machine according to claim 2, characterized in that, A filter (17) is provided on the third channel (10).

6. The leak detection system for filling in the continuous blow-fill-seal integrated machine according to claim 3, wherein A throttle valve (18) and a flow meter (19) are provided on the heat exchange medium loop. The throttle valve (18) is arranged between the water pump (16) and the first channel (4).

7. The leak detection system for the continuous blow-fill-seal integrated machine according to claim 1, wherein, The flow dividing seat (20) is connected to the closed loop (5) through a hose (21).

8. The leak detection system for the continuous blow-fill-seal machine according to claim 2, characterized in that The aperture of the leakage port (14) is 50 to 100 microns.

9. The leak detection system for filling in the continuous blow-fill-seal machine according to claim 1, characterized in that, A joint is provided on the detection channel, and a leakage port (14) is provided on the joint.

10. The leak detection system for the continuous blow-fill-seal machine for filling as described in claim 9, characterized in that, The joint is detachably connected to the detection channel.

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