Method for reducing carryover in a drug solution filtration system

Abstract

The present application relates to a kind of methods for reducing the residue of liquid medicine filtering system, the filtering system includes filter valve body, inlet pipe, outlet pipe and exhaust pipe are connected to the filter valve body, first valve body is installed on the exhaust pipe, inlet pipe is connected to the outlet pipe, second valve body is arranged between the inlet pipe and filter valve body, third valve body is installed on the inlet pipe, discharge pipe is connected to the outlet pipe end, the outlet pipe is obliquely arranged, by sequentially opening and closing between each valve body, gas is discharged from the liquid medicine remaining in filter valve body, thereby effectively saving data, reduce production cost.

Description

Technical Field

[0001] This invention relates to a method for reducing residues in a liquid filtration system, specifically to a method for using a liquid filter cartridge emptying device. Background Technology

[0002] Some liquid filter cartridges have the characteristic of not ventilating when wet. When the liquid medicine passes through the filter, some residual liquid at the back end of the filter cannot be discharged by venting. Generally, a dual valve assembly is added at the back end of the filter for residual purging, but even this method leaves some residual liquid before the valves. Summary of the Invention

[0003] The technical problem to be solved by this invention is the inability to completely drain the liquid medicine from the back end of the filter.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] First, a method for reducing residues in a liquid filtration system is provided, comprising the filtration system, the filtration system including a filter valve body, the filter valve body being connected to an inlet pipe, an outlet pipe and an exhaust pipe, a first valve body being installed on the exhaust pipe, an air inlet pipe being connected to the outlet pipe, a second valve body being disposed between the air inlet pipe and the filter valve body, a third valve body being installed on the air inlet pipe, and a discharge pipe being connected to the end of the outlet pipe, the outlet pipe being inclined.

[0006] The method is as follows:

[0007] S1: Vent the inlet pipe;

[0008] S2: Open the first valve body and the second valve body;

[0009] S3: The remaining medicine flows out under the influence of gravity;

[0010] S4: Close the first valve body and the second valve body;

[0011] S5: Open the third valve body, and gas is introduced into the air inlet pipe, allowing the liquid medicine to be discharged through the discharge pipe;

[0012] S6: Repeat S1 to S5 multiple times.

[0013] Furthermore, in S2, the opening time of the first valve body and the second valve body is 5 seconds.

[0014] Furthermore, in step S5, the gas introduced into the intake pipe is compressed air.

[0015] Furthermore, the time for compressed air to be introduced into the intake pipe is 5 seconds.

[0016] Furthermore, in S6, the number of repetitions is 5.

[0017] Furthermore, a pressure sensor is installed on the inlet pipe to detect the pressure inside the inlet pipe.

[0018] Furthermore, in step S3, the liquid medicine flows into the outlet pipe under the action of gravity and then passes through the inlet pipe.

[0019] Furthermore, the inlet pipe is connected to a tank, and the outlet pipe is connected to a filling machine at its end.

[0020] Furthermore, two filtration systems are provided between the tank and the filling machine.

[0021] Furthermore, the two filtration systems are connected by a solenoid valve.

[0022] The present invention has the following beneficial effects: By first opening the first and second valve bodies, the residual medicine in the filter valve body flows into the outlet pipe, reducing the amount of medicine remaining on the filter valve body. Then, the first and second valve bodies are closed, and the exhaust pipe is vented to discharge the medicine in the outlet pipe. Repeatedly draining the medicine can greatly reduce the amount of medicine remaining in the filter valve body, reduce medicine loss, avoid resource waste, and effectively save costs. At the same time, the entire process does not require entering the system to operate, so it will not cause pollution to the medicine and meets hygiene requirements. In addition, the high degree of automation makes the device and method more reliable, safe, and efficient to use. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the venting device in this embodiment;

[0025] Figure 2 This is a schematic diagram of the installation of the venting device in this embodiment; Detailed Implementation

[0026] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] This invention provides a method for reducing residues in a pharmaceutical filtration system, such as... Figure 1 As shown, this embodiment includes a filtration system 1, which includes a filter valve body 11. The filter valve body 11 is connected to an inlet pipe 13, an outlet pipe 17, and an exhaust pipe 18. A first valve body 12 is installed on the exhaust pipe 18. An air inlet pipe 19 is connected to the outlet pipe 17. A second valve body 14 is provided between the air inlet pipe 19 and the filter valve body 11. A third valve body 16 is installed on the air inlet pipe 19. A discharge pipe 10 is connected to the end of the outlet pipe 17. The outlet pipe 17 is inclined.

[0031] In this embodiment, the first valve body 12 is used to control the opening and closing of the exhaust pipe 18, and the second valve body 14 is used to control the opening and closing of the liquid outlet pipe 17.

[0032] The usage method of this embodiment is as follows:

[0033] S1: When the inlet pipe 13 is vented, the excess liquid in the pipe is first discharged. Since the valve core in the damp filter valve body 1 cannot pass through the gas, some liquid will remain in the filter valve body 1 and cannot be discharged.

[0034] S2: Open the first valve body 12 and the second valve body 14 to open the exhaust pipe 18 and the liquid outlet pipe 17. Opening the exhaust pipe 18 causes a pressure change in the filter valve body 11, which allows the medicine remaining in the filter valve body 11 to flow out. Opening the liquid outlet pipe 17 allows the medicine remaining in the filter valve body 11 to flow out. In this embodiment, the opening time of the first valve body 12 and the second valve body 14 is 5 seconds.

[0035] S3: Under the action of gravity, the residual medicine flows out. Since the outlet pipe 17 is set at an angle, the medicine remaining in the filter valve body 11 flows into the outlet pipe 17 under the action of gravity and continues to flow under the action of gravity until it passes through the air inlet pipe 19.

[0036] S4: Close the first valve body 12 and the second valve body 14, thereby closing the exhaust pipe 18 and the liquid outlet pipe 17. At this time, the liquid remaining in the liquid outlet pipe 17 cannot flow back into the filter valve body 11.

[0037] S5: Open the third valve body 16, and gas is introduced into the air inlet pipe 19, so that the liquid medicine is discharged through the discharge pipe 10. Since the second valve body 14 is closed, the gas introduced into the air inlet pipe 19 can only move along the liquid outlet pipe 17 away from the second valve body 14, thereby driving the residual liquid medicine in the liquid outlet pipe 17 to move into the discharge pipe 10 and be discharged from the discharge pipe 10.

[0038] In this step, it is best to introduce compressed air into the intake pipe 19 for 5 seconds.

[0039] S6: Repeat S1 to S5 multiple times. Repeating the above steps multiple times will gradually drain the residual medicine in the filter valve body 11. In this step, it is best to repeat 5 times.

[0040] like Figure 2 As shown, the filtration system 1 of this embodiment is installed on the production line. The inlet pipe 13 is connected to the tank 2 and the outlet pipe 17 is connected to the filling machine 3. The medicine liquid in the tank 2 can be filtered and screened through the filtration system 1 and then filled into the medicine bottle through the filling machine 3 to complete the production. After the medicine liquid is finished, the medicine liquid remaining in the filter valve body 11 is discharged through the above steps.

[0041] In this embodiment, as Figure 1 As shown, a pressure sensor is installed on the inlet pipe 13 to sense the pressure inside the inlet pipe 13 and prevent excessive pressure inside the inlet pipe 13 from damaging the filter element in the filter valve body 11.

[0042] To ensure better filtration, two filtration systems 1 are installed between the tank 2 and the filling machine 3. The outlet pipe 17 of the first filtration system 1 is connected to the inlet pipe 13 of the second filtration system 1, and the outlet pipe 17 of the second filtration system 1 is connected to the filling machine 3. The two filtration systems 1 are connected by a solenoid valve.

[0043] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for reducing residue in a liquid filtration system, comprising a filtration system (1), the filtration system (1) comprising a filter valve body (11), the filter valve body (11) being connected to an inlet pipe (13), an outlet pipe (17) and an exhaust pipe (18), a pressure sensor being installed on the inlet pipe (13) for detecting the pressure inside the inlet pipe (13), a first valve body (12) being installed on the exhaust pipe (18), an air inlet pipe (19) being connected to the outlet pipe (17), a second valve body (14) being provided between the air inlet pipe (19) and the filter valve body (11), a third valve body (16) being installed on the air inlet pipe (19), and a discharge pipe (10) being connected to the end of the outlet pipe (17), the outlet pipe (17) being inclined; The method is as follows: S1: Ventilation is provided through the liquid inlet pipe (13); S2: Open the first valve body (12) and the second valve body (14); S3: The remaining medicine flows out under the influence of gravity; S4: Close the first valve body (12) and the second valve body (14); S5: Open the third valve body (16), and let the air inlet pipe (19) pass through the gas, so that the medicine liquid is discharged through the discharge pipe (10); S6: Repeat S1 to S5 multiple times.

2. The method for reducing residues in a pharmaceutical filtration system according to claim 1, characterized in that, In S2, the opening time of the first valve body (12) and the second valve body (14) is 5 seconds.

3. The method for reducing drug filtration system residues according to claim 1, characterized in that, In S5, the gas introduced into the intake pipe (19) is compressed air (15).

4. The method for reducing residues in a pharmaceutical filtration system according to claim 3, characterized in that, The intake pipe (19) is used to introduce compressed air (15) for 5 seconds.

5. The method for reducing drug filtration system residues according to claim 1, characterized in that, In S6, the number of repetitions is 5.

6. The method for reducing residues in a pharmaceutical filtration system according to claim 1, characterized in that, In S3, the liquid medicine flows into the outlet pipe (17) under the action of gravity and passes through the air inlet pipe (19).

7. The method for reducing residues in a pharmaceutical filtration system according to claim 1, characterized in that, The inlet pipe (13) is connected to the tank (2), and the outlet pipe (17) is connected to the filling machine (3).

8. The method for reducing residues in a pharmaceutical filtration system according to claim 7, characterized in that, Two filtration systems (1) are provided between the tank (2) and the filling machine (3).

9. A method for reducing residues in a pharmaceutical filtration system according to claim 8, characterized in that, The two filtration systems (1) are connected by a solenoid valve.

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