Oral liquid filling device and oral liquid filling method

Abstract

The invention relates to the technical field of filling, in particular to an oral liquid filling device and a filling method.The oral liquid filling device comprises a liquid supply pipe and a filling head, the outer ring of the filling head is sleeved with a protective sleeve, and the side, facing a container, of the protective sleeve is provided with an outlet allowing the filling head to penetrate through; a sealing surface is arranged in the outlet and comprises a diaphragm, a sealing ring and a sealing ring, and the diaphragm is horizontally laid in the outlet; the connecting ends of the at least three groups of valves are connected to the inner hole wall of the diaphragm, and the free ends of the at least three groups of valves are folded inwards and are matched with one another to plug the inner hole of the outlet. Through the arrangement of the protective sleeve, a sealed space for containing the filling head can be formed, the cleanliness of the filling head can be protected in the non-filling state, meanwhile, the deformable sealing face is arranged at the outlet of the protective sleeve, the sealing effect on the cleaning cavity in the normal state can be guaranteed, and the filling head can be allowed to penetrate through to achieve filling.

Description

Technical Field

[0001] The invention relates to the technical field of filling, in particular to an oral liquid filling device and a filling method of the oral liquid filling device. Background Art

[0002] In the pharmaceutical industry, oral liquid is a common drug dosage form, which is widely used due to its convenient administration and rapid absorption. The production process of oral liquid includes preparation, filtration, filling, sealing and other links, among which filling is one of the key steps to ensure product quality;

[0003] In order to avoid splashing of liquid medicine or excessive contact with air during filling, the filling head is generally directly inserted into the liquid medicine container for filling; however, since the output head of the filling head is normally directly exposed to the air, impurities will adhere to the surface, which will affect the hygiene of the oral liquid. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and provides an oral liquid filling device and a filling method. The specific technical scheme is as follows:

[0005] On the one hand, the present application provides an oral liquid filling device for filling a container, comprising a liquid supply tube and a filling head, wherein the outer ring of the filling head is covered with a protective sleeve, and the side of the protective sleeve facing the container has an outlet allowing the filling head to pass through;

[0006] A sealing surface is provided inside the outlet, and the sealing surface comprises:

[0007] A diaphragm, the diaphragm being horizontally laid in the outlet;

[0008] And at least three groups of valves, the connection ends of the at least three groups of valves are all connected to the inner hole wall of the diaphragm, and the free ends are gathered inwards and cooperate with each other to block the inner hole of the outlet.

[0009] As a further technical solution of the present invention, the diaphragm is made of natural rubber, and the outer diameter of the filling head is smaller than the outer diameter of the diaphragm and larger than the inner diameter of the diaphragm.

[0010] As a further technical solution of the present invention, the sealing surfaces are provided in a plurality of groups and are arranged equidistantly along the penetration path of the filling head.

[0011] As a further technical solution of the present invention, the valves in two adjacent sealing surfaces are arranged alternately.

[0012] As a further technical solution of the present invention, the protective sleeve has a clean cavity inside for accommodating the filling head, and the clean cavity is a sealed space.

[0013] As a further technical solution of the present invention, the inner wall of the protective sleeve has a nut, and the nut is rotatably connected to the filling head.

[0014] As a further technical solution of the present invention, the output end of the filling head is in a conical structure.

[0015] As a further technical solution of the present invention, the protective sleeve is sleeved with the liquid supply pipe, the liquid supply pipe is externally connected to a fixing plate, and an elastic member is connected between the fixing plate and the protective sleeve.

[0016] As a further technical solution of the present invention, the end surface of the protective sleeve facing the container has a protective pad.

[0017] On the other hand, the present application also provides a filling method of an oral liquid filling device, the specific steps of which are as follows:

[0018] S1, driving the filling head downward, the filling head drives the protective cover to move downward synchronously, and the protective cover stops moving when it contacts the container, while the filling head continues to move downward and moves relative to the protective cover. As the filling head continues to move downward, the pointed cone end of the filling head passes through the sealing surface, forcing the free end of the valve to unfold, and the diaphragm is stretched and deformed;

[0019] S2, drives the filling head to move upward, and the filling head moves into the protective cover, while the diaphragm and valve are reset and the sealing surface is formed.

[0020] The beneficial effects of the present invention are as follows:

[0021] In the present application, a sealed space for accommodating the filling head can be formed by setting the protective sleeve, which can protect the cleanliness of the filling head in the non-filling state. At the same time, a deformable sealing surface is set at the outlet of the protective sleeve, which can ensure the sealing effect of the clean cavity under normal conditions and allow the filling head to penetrate to achieve filling.

[0022] Moreover, even if the filling head passes through the sealing surface, the sealing surface still tightly wraps the filling head to maintain the sealed environment of the cleaning chamber without interference from the outside world. On the other hand, when the filling head retracts into the cleaning chamber, the diaphragm will intercept some impurities remaining outside the filling head, thereby cleaning the outer surface of the filling head from the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a filling method in the prior art is shown;

[0024] Figure 2 The schematic diagram of the structure after the protective cover and the filling head are installed is shown;

[0025] Figure 3 A schematic diagram of the structure of the protective cover is shown;

[0026] Figure 4 The internal structure diagram of the filling head is shown;

[0027] Figure 5 A schematic diagram of the structure of the head is shown;

[0028] Figure 6 A schematic diagram of the structure of the diaphragm is shown;

[0029] Figure 7 Shows Figure 6 Schematic diagram of the state structure.

[0030] Description of the drawings: 110, liquid supply pipe; 111, fixed plate; 112, elastic member; 120, filling head; 130, container; 200, protective cover; 210, tail; 220, cylinder; 221, cleaning chamber; 222, nut; 230, head; 231, outlet; 232, diaphragm; 233, valve. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0032] Figure 1 A schematic diagram of a filling method of the prior art is shown; in the prior art, an oral liquid filling device is installed on a lifting device, and is used to fill a container 130, and includes a liquid supply pipe 110 and a filling head 120; in actual filling, the lifting device drives the liquid supply pipe 110 and the filling head 120 to descend and allows the filling head 120 to extend into the container 130, at which time the liquid supply pipe 110 is turned on and filling begins; it should be noted that the liquid supply pipe 110 is an external pipe with an electromagnetic valve therein, which can be turned on after the filling head 120 is extended into the container 130, and automatically closed after reaching a specified liquid level. The above are all prior art, and this application will not go into too much detail, nor will it provide any protection.

[0033] Figure 2 It shows a schematic diagram of the structure after the protective cover 200 and the filling head 120 are installed; Figure 2 In the figure, a protective sleeve 200 is slidably sleeved on the outside of the liquid supply tube 110, the protective sleeve 200 is sleeved on the liquid supply tube 110, and a fixed disk 111 is connected to the outside of the liquid supply tube 110, and an elastic member 112 is connected between the fixed disk 111 and the protective sleeve 200; the protective sleeve 200 is used to protect the neatness of the filling head 120 under normal conditions, and at the same time, the protective sleeve 200 and the filling head 120 are slidably connected, so relative movement is allowed between the two, that is, the filling head 120 can move relative to the protective sleeve 200, thereby moving downward and extending into the container 130; and the setting of the elastic member 112 can ensure that the protective sleeve 200 can be sleeved on the outside of the filling head 120 under normal conditions.

[0034] Figure 3The schematic diagram of the structure of the protective sleeve 200 is shown; the protective sleeve 200 includes a tail portion 210, a barrel 220 and a head portion 230 which are connected in sequence, the tail portion 210 is slidably sleeved on the liquid supply tube 110 to form a top seal for the filling head 120, the barrel 220 surrounds the outside of the filling head 120 to form a circumferential protection for the filling head 120, the head portion 230 is arranged below the filling head 120 to seal the bottom of the barrel 220, and the protective sleeve 200 has a protective pad on the end surface facing the container 130, the protective pad is made of rubber, and can effectively relieve the pressure on the container 130; when the filling head 120 and the protective sleeve 200 move relative to each other, the filling head 120 moves downward and penetrates the head portion 230 to extend into the container 130; the output end of the filling head 120 is in a conical structure, which is to facilitate penetration of the sealing surface.

[0035] Figure 4 The internal structure of the filling head 120 is shown; the tail portion 210 and the head portion 230 are matched to form a cleaning cavity 221 for accommodating the filling head 120 in the barrel 220, and the inner wall of the protective sleeve 200 is provided with a nut 222, which is rotatably connected to the filling head 120; the cleaning cavity 221 is a sealed space, which can protect the filling head 120 placed in the cleaning cavity 221 and isolate external impurities, and can also clean the filling head 120. The cleaning method is not specifically limited. For example, Steam is introduced into the filling head 120 for pasteurization, or other cleaning methods such as disinfectant are introduced; the nut 222 is a hollow structure, so that when the disinfectant fluid is introduced, it can circulate in the cleaning cavity 221 to avoid the nut 222 blocking the cleaning cavity 221, and because the filling head 120 and the nut 222 are rotatably connected, the two are connected by a ball screw structure. When the filling head 120 moves downward, the nut 222 will force the filling head 120 to rotate and move downward, which is to facilitate the subsequent passage of the head 230.

[0036] Figure 5 A schematic diagram of the structure of the head 230 is shown; Figure 6 shows a schematic structural diagram of the diaphragm 232; Figure 7 Shows Figure 6 Schematic diagram of the state structure; Figure 5-Figure 7In the embodiment, an outlet 231 is provided in the head 230 for the filling head 120 to pass through, and a sealing surface is arranged in the outlet 231, which includes a diaphragm 232 and at least three groups of valves 233, and the diaphragm 232 is horizontally laid in the outlet 231; the connecting ends of the at least three groups of valves 233 are all connected to the inner hole wall of the diaphragm 232, and the free ends are retracted inwardly and cooperate with each other to block the inner hole of the outlet 231, and the valves 233 are nitrile rubber; under normal conditions, the setting of the sealing surface can make the filling head 120 sealed in the cleaning cavity 221, and during filling, the filling head 120 pierces the sealing surface and can extend into the container 130 to achieve filling; when the filling head 120 pierces the sealing surface, the free end of the valve 233 is pushed open to allow the filling head 120 to pass through, and at this time the valve 233 is unfolded as Figure 7 As shown, when the filling head 120 returns to the cleaning chamber 221 again, at least three groups of valves 233 can be retracted again and cooperate with the diaphragm 232 to form a sealing surface for repeated use; the diaphragm 232 is natural rubber, and the outer diameter of the filling head 120 is smaller than the outer diameter of the diaphragm 232 and larger than the inner diameter of the diaphragm 232; the diaphragm 232 has good elasticity, that is, when the filling head 120 passes through the diaphragm 232, the inner diameter of the diaphragm 232 is forced to increase, so that the diaphragm 232 is stretched open, and at this time the diaphragm 232 is tightly clamped on the outer wall of the filling head 120. In this way, on the one hand, even if the filling head 120 passes through the sealing surface, the cleaning The cavity 221 remains in a sealed environment without interference from the outside world. On the other hand, when the filling head 120 retreats to clean the inside of the cavity 221, the diaphragm 232 will intercept some impurities remaining outside the filling head 120, and the side surface will clean the outer surface of the filling head 120. There are several groups of sealing surfaces, which are equidistantly arranged along the penetration path of the filling head 120, and the valves 233 in two adjacent sealing surfaces are staggered. The use of multiple sealing surfaces can further improve the sealing effect of the filling head 120 when entering and exiting, and the staggered arrangement of the valves 233 in two adjacent sealing surfaces can further extend the penetration path of the fluid and increase the difficulty of penetration.

[0037] It should be noted that, in the present embodiment, the inner ring shape of the diaphragm 232 is a circular structure, and therefore the shape formed by the four sets of valves 233 in the folded state is a matching circular structure, but in some other embodiments, the inner ring shape of the diaphragm 232 is not limited.

[0038] The filling method of the oral liquid filling device has the following specific steps:

[0039] S1, driving the filling head 120 to move downward, the filling head 120 drives the protective cover 200 to move downward synchronously, and the protective cover 200 stops moving when it contacts the container 130, while the filling head 120 continues to move downward and moves relative to the protective cover 200. As the filling head 120 continues to move downward, the pointed end of the filling head 120 passes through the sealing surface, forcing the free end of the valve 233 to unfold, and the diaphragm 232 is stretched and deformed;

[0040] S2, driving the filling head 120 to move upward, the filling head 120 moves into the protective cover 200, and at the same time the diaphragm 232 and the valve 233 are reset, and the sealing surface is formed.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An oral liquid filling device, used for filling a container (130), comprising a liquid supply pipe (110) and a filling head (120), characterized in that: The filling head (120) is sheathed with a protective sleeve (200) on its outer ring, and the protective sleeve (200) has an outlet (231) on the side facing the container (130) for allowing the filling head (120) to pass through; The outlet (231) is provided with a sealing surface, and the sealing surface comprises: A diaphragm (232), wherein the diaphragm (232) is horizontally laid in the outlet (231); And at least three groups of valves (233), the connection ends of the at least three groups of valves (233) are all connected to the inner hole wall of the diaphragm (232), and the free ends are retracted inwardly and cooperate with each other to block the inner hole of the outlet (231).

2. The oral liquid filling device according to claim 1, characterized in that: The diaphragm (232) is made of natural rubber, and the outer diameter of the filling head (120) is smaller than the outer diameter of the diaphragm (232) and larger than the inner diameter of the diaphragm (232).

3. The oral liquid filling device according to claim 2, characterized in that: The sealing surfaces are provided in a plurality of groups and are arranged at equal distances along the penetration path of the filling head (120).

4. The oral liquid filling device according to claim 3, characterized in that: The valves (233) in two adjacent sealing surfaces are arranged in a staggered manner.

5. The oral liquid filling device according to claim 4, characterized in that: The protective sleeve (200) has a clean chamber (221) inside for accommodating the filling head (120), and the clean chamber (221) is a sealed space.

6. The oral liquid filling device according to claim 5, characterized in that: The inner wall of the protective sleeve (200) is provided with a nut (222), and the nut (222) is rotatably connected to the filling head (120).

7. The oral liquid filling device according to claim 6, characterized in that: The output end of the filling head (120) has a conical structure.

8. The oral liquid filling device according to claim 7, characterized in that: The protective sleeve (200) is sleeved on the liquid supply pipe (110), the liquid supply pipe (110) is externally connected to a fixing plate (111), and an elastic member (112) is connected between the fixing plate (111) and the protective sleeve (200).

9. The oral liquid filling device according to claim 8, characterized in that: The protective sleeve (200) has a protective pad on its end surface facing the container (130).

10. The filling method of the oral liquid filling device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1, driving the filling head (120) to move downward, the filling head (120) drives the protective cover (200) to move downward synchronously, and when the protective cover (200) contacts the container (130), the movement stops, while the filling head (120) continues to move downward and moves relative to the protective cover (200). As the filling head (120) continues to move downward, the pointed end of the filling head (120) passes through the sealing surface, forcing the free end of the valve (233) to unfold, and the diaphragm (232) is stretched and deformed; S2, driving the filling head (120) to move upward, the filling head (120) moves into the protective sleeve (200), and at the same time the diaphragm (232) and the valve (233) are reset, and the sealing surface is formed.

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