Inflation device for powder cavity of powder-liquid double-chamber bag

Abstract

The utility model relates to the field of powder-liquid double-chamber bag products, and discloses a powder-liquid double-chamber bag powder cavity inflating device which is used for replacing oxygen in a powder cavity of a powder-liquid double-chamber bag and comprises a nitrogen pipeline and an air curtain box body, one end of the nitrogen pipeline is communicated with the air curtain box body, and the other end of the nitrogen pipeline is communicated with a nitrogen source. After the powder-liquid double-chamber bag enters the air curtain box body, an opening of a powder chamber of the powder-liquid double-chamber bag is opened, and the nitrogen pipeline fills nitrogen into the air curtain box body. According to the utility model, a relatively closed space is created by arranging the air curtain box body, and after the powder-liquid double-chamber bag on the annular conveying and supplying system enters the air curtain box body, nitrogen is continuously filled into the air curtain box body, so that oxygen in the powder chamber is replaced, and the effect of reducing the content of oxygen in the powder chamber on the powder-liquid double-chamber bag in batches is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of powder-liquid double-chamber bag product, especially to a powder-liquid double-chamber bag powder cavity inflation device. BACKGROUND

[0002] The powder-liquid double-chamber bag product is a ready-to-use infusion product, and the bag body is composed of a transparent co-extrusion film. The product comprises a liquid cavity chamber containing a solvent for injection and a powder cavity chamber containing a drug powder, and the two cavity chambers are separated by a weak welding separation strip. When used, medical staff only needs to gently squeeze the liquid cavity chamber to open the weak welding separation strip between the two cavity chambers, so that the solvent for injection in the liquid cavity chamber and the drug powder in the powder cavity chamber are fully mixed, and the product can be used for intravenous infusion.

[0003] The powder cavity chamber of the powder-liquid double-chamber bag product will not be sealed immediately after filling with powder raw materials, and the oxygen content in the powder cavity chamber needs to be controlled first. Only the product with residual oxygen value lower than the set value can meet the qualified standard and then be sealed.

[0004] The existing method for controlling the residual oxygen value of the powder cavity chamber is to insert an inflation needle into the powder cavity chamber for inflation, such as filling with nitrogen gas and then sealing. The inflation gas amount and inflation speed of this method are relatively small, otherwise the powder may be raised. Therefore, the gas replacement time is relatively long, which slows down the production progress, increases the production cost, and cannot meet the commercial production. Therefore, it needs to be improved. UTILITY MODEL CONTENT

[0005] In view of the problems in the prior art, the existing method for controlling the residual oxygen value of the powder cavity chamber has a long gas replacement time, which slows down the production progress, increases the production cost, and cannot meet the commercial production. The purpose of the utility model is to provide a powder-liquid double-chamber bag powder cavity inflation device, which creates a relatively closed space by setting a gas curtain box body. When the powder-liquid double-chamber bag on the annular conveying and feeding system enters the gas curtain box body, nitrogen gas is continuously filled in the gas curtain box body to replace the oxygen in the powder cavity chamber, thereby achieving the effect of reducing the oxygen content in the powder cavity chamber of the powder-liquid double-chamber bag in batches.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A powder-liquid double-chamber bag powder cavity inflation device for replacing the oxygen in the powder cavity chamber of the powder-liquid double-chamber bag, comprising a nitrogen gas pipeline and a gas curtain box body, one end of the nitrogen gas pipeline is communicated with the gas curtain box body, and the other end is connected to a nitrogen gas source. After the powder-liquid double-chamber bag enters the gas curtain box body, the powder cavity chamber of the powder-liquid double-chamber bag is opened, and the nitrogen gas pipeline fills nitrogen gas into the gas curtain box body.

[0008] The utility model further sets up: nitrogen pipeline includes shunt pipe and connecting pipe, the air curtain box body is provided with the baffle, the baffle divides the upper space in the air curtain box body into two or more than two independent chambers, every chamber is connected with a connecting head, every connecting head respectively through a connecting pipe with shunt pipe intercommunication.

[0009] The utility model further sets up: nitrogen pipeline still includes flowmeter, every connecting head with shunt pipe all is provided with a flowmeter for controlling nitrogen flow.

[0010] The utility model further sets up: the powder chamber of powder liquid double chamber bag is vertically upwards, and the connecting head all sets up in the top position of air curtain box body.

[0011] The utility model further sets up: the air curtain box body is provided with the shunt plate, the shunt plate is located in the upper space in the air curtain box body and the periphery edge of shunt plate all is contacted with the inner wall of air curtain box body, the shunt plate all uniformly is equipped with a plurality of through -hole for airflow to pass.

[0012] The utility model further sets up: powder liquid double chamber bag passes through annular conveying supply system and enters and exits air curtain box body, be provided with a plurality of interval arrangement and be used for hanging fixed powder liquid double chamber bag's limit clamp on annular conveying supply system, the lowest end of baffle is higher than the highest point of limit clamp and powder liquid double chamber bag.

[0013] The utility model further sets up: the lower part of air curtain box body is provided with clamp support strip, clamp support strip and limit clamp cooperate and work and maintain powder chamber to be in the open state.

[0014] The utility model further sets up: limit clamp includes two groups of limit post, long arm, pivot and abutment rod, the abutment rod can swing with the pivot's axis as the center of rotation with long arm, the top of two long arms all is provided with a limit post, the both sides of powder chamber of powder liquid double chamber bag are provided with limit hole, the distance between two limit posts is compatible with the distance between two limit holes, the limit hole is set on the limit post, clamp support strip and two obliquely arranged abutment rods abutment make the distance between two limit posts less than the distance between two limit holes.

[0015] The utility model further sets up: the air curtain box body is provided with bag body input and bag body output respectively in the direction of transmission of annular conveying supply system, the annular conveying supply system enters air curtain box body from bag body input and leaves from bag body output, clamp support strip includes maintaining section and seal section, the maintaining section is horizontally set and the abutment rod is contacted with horizontal section, the seal section is located in the end of maintaining section towards bag body output, and the end of seal section away from maintaining section is obliquely downwardly set.

[0016] The utility model further sets up: the clamp support strip still includes the opening section, the opening section is located in maintaining section towards the one end of bag body input, and the opening section is away from the one end of maintaining section and sets up obliquely downward.

[0017] To sum up, the utility model realizes beneficial effect as follows:

[0018] (1) the powder liquid double chamber bag enters the gas curtain box, and the opening of the powder chamber of the powder liquid double chamber bag is in the open state, the nitrogen pipeline is in the process of continuously filling nitrogen into the gas curtain box, the oxygen in the powder chamber is fully replaced by nitrogen, thereby reducing the oxygen content in the powder chamber, and the purpose of controlling the residual oxygen value of the powder chamber is achieved;

[0019] (2) the powder liquid double chamber bag product is driven by the annular conveying supply system through different process stations on the production line, the gas curtain box allows the annular conveying supply system to directly pass through the gas curtain box, and provides a relatively closed space for the gas replacement process, so that multiple powder liquid double chamber bags can be processed at the same time in batches, and the production efficiency is greatly improved;

[0020] (3) the shunt plate arranged in the gas curtain box can disperse the high-speed concentrated airflow in the nitrogen pipeline into uniform and gentle airflow, prevent powder flying, and make the gas replacement more uniform;

[0021] (4) the partition plate arranged in the gas curtain box provides a relatively independent chamber for each powder liquid double chamber bag entering the gas curtain box, effectively avoids the situation that the multiple powder liquid double chamber bags in the gas curtain box have different gas replacement degrees, and thus ensures that all the powder liquid double chamber bags in the gas curtain box are completely replaced by gas after a certain gas replacement time;

[0022] (5) the clamp support strip arranged at the fixed position of the lower part of the gas curtain box cooperates with the limiting clamp on the annular conveying supply system, can gradually open the opening of the powder chamber of the powder liquid double chamber bag before entering the gas curtain box, completely open and maintain the open state after entering the gas curtain box, and gradually close when leaving the gas curtain box, so that the oxygen is replaced by the gas curtain box at the same time, the nitrogen in the powder chamber is prevented from escaping in large quantities due to the sudden closing of the powder chamber opening during the process of leaving the gas curtain box, and the subsequent sealing process is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description will be simply introduced, and obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can be obtained by those skilled in the art according to these drawings.

[0024] Figure 1The utility model discloses a structure schematic diagram of powder liquid double chamber bag powder cavity inflation device in the utility model.

[0025] Figure 2 The utility model discloses a structure schematic diagram in the gas curtain box body inside.

[0026] Figure 3 For Figure 2 The utility model discloses a structure schematic diagram of powder liquid double chamber bag powder cavity inflation device in the utility model.

[0027] Figure 4 The utility model discloses a structure schematic diagram of powder liquid double chamber bag powder cavity inflation device in the utility model.

[0028] In the figure: 1, nitrogen pipeline;11, filter;12, shunt pipe;13, first connecting pipe;14, flowmeter;15, second connecting pipe;2, gas curtain box body;21, connecting head;22, shunt plate;23, bag body input port;24, bag body output port;25, clamp support strip;251, opening section;252, maintaining section;253, sealing section;26, partition;3, annular conveying supply system;31, limit clamp;311, limit column;312, long arm;313, pivot;314, abutment rod;4, powder liquid double chamber bag;41, powder chamber;42, liquid chamber;43, limit hole. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are a part of the embodiments of the utility model and not all the embodiments. In order to facilitate the description, the terms "vertical", "horizontal", "left", "right", "up", "down", "inner", "outer", "bottom" and the like used in the specification indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0031] As shown in the accompanying Figures 1-3 A powder liquid double chamber bag powder cavity inflation device, comprising nitrogen pipeline 1 and gas curtain box body 2.

[0032] As shown in the accompanying Figures 2-4As shown, the powder-liquid dual-chamber bag 4 is driven by the annular conveying supply system 3 to pass through different process stations on the production line. The annular conveying supply system 3 is a structure of an annular conveyor in the prior art, and a plurality of limiting clamps 31 are arranged at equal intervals in the conveying direction of the annular conveying supply system 3.

[0033] The limiting clamp 31 is also a special clamp for suspending and fixing the powder-liquid dual-chamber bag 4 in the prior art. The limiting clamp 31 comprises two groups of limiting columns 311, long arms 312, pivots 313 and abutting rods 314 arranged symmetrically left and right.

[0034] The horizontally arranged limiting column 311 is arranged at the top end of the long arm 312, and the upper and lower ends of the pivot 313 are respectively connected with the long arm 312 and a short arm, which can swing within a certain range with the pivot 313 as the rotation center. The short arm is fixedly connected with the outwardly inclined abutting rod 314, so that the abutting rod 314 can also swing with the pivot 313 as the rotation center. Specifically, when the distance between the two abutting rods 314 decreases, the distance between the top ends of the two long arms 312 increases; and when the distance between the two abutting rods 314 increases, the distance between the top ends of the two long arms 312 decreases.

[0035] The powder-liquid dual-chamber bag 4 comprises a powder chamber 41, a liquid chamber 42 and a pipe opening. When the powder-liquid dual-chamber bag 4 is suspended on the limiting clamp 31, the powder chamber 41 is located above the liquid chamber 42, and the pipe opening is located below the liquid chamber 42. Two limiting holes 43 for suspending the bag body are respectively arranged at the two sides of the top of the powder chamber 41. The distance between the two limiting holes 43 is matched with the distance between the two limiting columns 311, so that the powder-liquid dual-chamber bag 4 can be stably suspended and fixed on the limiting clamp 31 after the limiting holes 43 are sleeved on the limiting columns 311.

[0036] After the powder-liquid dual-chamber bag 4 is driven by the annular conveying supply system 3 to pass through the powder dispensing process, the powder chamber 41 is filled with powder raw materials. At this time, the opening direction of the powder chamber 41 is vertically upward, and the powder chamber 41 is not directly sealed, but the powder-liquid dual-chamber bag 4 is sent into the powder chamber inflating device in the utility model by the annular conveying supply system 3.

[0037] As shown in the accompanying drawings, Figures 1-3 The nitrogen pipeline 1 is used for filling nitrogen into the air curtain box body 2. The nitrogen pipeline 1 comprises a filter 11, a shunt pipe 12, a first connecting pipe 13, a flow meter 14 and a second connecting pipe 15, wherein the filter 11 and the flow meter 14 are both devices in the prior art.

[0038] The filter 11 is used for filtering the nitrogen in the pipeline to prevent impurities in the gas source from entering the air curtain box body 2. One end of the filter 11 is communicated with the nitrogen gas source, and the other end is communicated with the shunt pipe 12.

[0039] The shunt pipe 12 is used to evenly shunt the nitrogen gas flow through the filter 11, and in this embodiment, the shunt pipe 12 divides the nitrogen gas flow into four. Each of the four nitrogen gas pipelines connected to the air curtain box body 2 is provided with a flow meter 14 for controlling the flow of nitrogen gas.

[0040] On each nitrogen gas pipeline, the two ends of the first connecting pipe 13 are respectively connected to the shunt pipe 12 and the flow meter 14, and the two ends of the second connecting pipe 15 are respectively connected to the flow meter 14 and the connecting head 21 of the air curtain box body 2.

[0041] The air curtain box body 2 is a rectangular box structure, and a partition plate 26 is arranged inside the air curtain box body 2. The top end of the partition plate 26 is fixedly connected to the top of the air curtain box body 2. In this embodiment, three baffles are arranged in the air curtain box body 2, thereby separating the upper space in the air curtain box body 2 into four independent chambers.

[0042] The connecting heads 21 are all located outside the air curtain box body 2 and at the top of the air curtain box body 2. Each chamber is connected to a corresponding connecting head 21, so that nitrogen gas in each nitrogen gas pipeline is separately filled into a chamber.

[0043] The air curtain box body 2 is provided with a bag input port 23 and a bag output port 24 in the conveying direction of the annular conveying and feeding system 3. The bag input port 23 and the bag output port 24 are both notches formed in the side wall of the air curtain box body 2. The annular conveying and feeding system 3 drives the powder-liquid dual-chamber bag 4 to enter the air curtain box body 2 from the bag input port 23 and to exit from the bag output port 24. In other embodiments, a shielding structure for shielding the notches can be arranged at the bag input port 23 and the bag output port 24 when the air curtain box body 2 is inflated.

[0044] When the powder-liquid dual-chamber bag 4 and the annular conveying and feeding system 3 are located inside the air curtain box body 2, the lowest end of the partition plate 26 is still higher than the highest point of the limiting clamp 31 and the powder-liquid dual-chamber bag 4, thereby avoiding interference and collision between the partition plate 26 and other structures.

[0045] The air curtain box body 2 is provided with a shunt plate 22. The shunt plate 22 is located below the connecting heads 21 and in the upper space in the air curtain box body 2. The shunt plate 22 is a horizontally arranged flat plate structure, and the four peripheral edges thereof are in complete contact with the inner wall of the air curtain box body 2. A plurality of circular small holes for gas flow are uniformly formed in the shunt plate 22, so that the high-speed concentrated flow of nitrogen gas entering from the connecting heads 21 is uniformly dispersed into a gentle flow after passing through the shunt plate 22, thereby preventing the high-speed gas flow from directly blowing the powder chamber 41 with an open lower end to cause powder lifting, and making the replacement of gas in each independent chamber in the air curtain box body 2 more uniform.

[0046] The lower part of the air curtain box 2 is provided with a clamp supporting strip 25 for controlling the opening and closing of the top opening of the powder chamber 41 by cooperating with the limiting clamp 31. The clamp supporting strip 25 comprises an opening section 251, a maintaining section 252 and a sealing section 253.

[0047] The position of the clamp supporting strip 25 is fixed, the maintaining section 252 is horizontally arranged, and the opening section 251 and the sealing section 253 are respectively arranged at two ends of the maintaining section 252. The opening section 251 is arranged at one end of the maintaining section 252 towards the bag body input port 23, and the sealing section 253 is arranged at one end of the maintaining section 252 towards the bag body output port 24. Moreover, along the conveying direction of the annular conveying and feeding system 3, the opening section 251 is arranged to be inclined upward, and the sealing section 253 is arranged to be inclined downward.

[0048] The height of the upper surface of the maintaining section 252 is higher than the lowest point of the bottom abutting rod 314 of the limiting clamp 31 in the annular conveying and feeding system 3. After the powder chamber 41 is filled with powder raw materials, the bag body at the position of the powder chamber 41 is pulled because the distance between the two limiting holes 43 is approximately equal to the distance between the two limiting columns 311, and thus the opening at the top of the powder chamber 41 is in an approximately closed state. Before the limiting clamp 31 enters the air curtain box 2, the limiting clamp 31 first contacts the opening section 251, and the abutting rod 314 first abuts against the opening section 251. As the limiting clamp 31 enters the air curtain box 2, the opening section 251 gradually supports the limiting clamp 31 upward, so that the two abutting rods 314 on the same limiting clamp 31 are both expanded outward, the short arms fixedly connected with the abutting rods 314 are rotated by a certain angle in a direction away from each other, and then the two long arms 312 are rotated in a direction close to each other. That is, the distance between the two limiting columns 311 on the limiting clamp 31 is reduced, so that the bag body at the position of the powder chamber 41 is squeezed, and finally the opening at the top of the powder chamber 41 is opened.

[0049] When the four limiting clamps 31 are all in the respective chambers for gas replacement, the horizontal maintaining section 252 can keep the openings of the powder-liquid dual-chamber bag 4 on the four limiting clamps 31 in an open state; when the gas replacement is completed, the limiting clamp 31 gradually pulls the bag body at the position of the powder chamber 41 as it passes through the sealing section 253 after leaving the air curtain box 2, so that the opening of the powder chamber 41 is gradually closed, effectively avoiding the large amount of nitrogen in the powder chamber 41 from escaping due to the sudden closing of the opening of the powder chamber 41 during the process of the bag body leaving the air curtain box 2.

[0050] The implementation principle of the above embodiment is as follows:

[0051] After the four powder-liquid double-chamber bags 4 are driven into the gas curtain box 2 by the annular conveying and feeding system 3, the openings of the powder chambers 41 of the powder-liquid double-chamber bags 4 are in the open state under the action of the clamp supporting strips 25 and the limiting clamps 31. The four nitrogen gas pipelines 1 continuously fill a set amount of nitrogen gas into the gas curtain box 2 under the control of the flow meters 14. The nitrogen gas dispersed by the shunt plates 22 vertically downwardly sufficiently displaces the oxygen gas in the powder chambers 41. After the set displacement time is reached, the four powder-liquid double-chamber bags 4 are driven out of the gas curtain box 2 by the annular conveying and feeding system 3, at this time, the oxygen gas in each powder chamber 41 is sufficiently displaced by the nitrogen gas, and the residual oxygen value of the powder chamber 41 reaches the standard. And in the process that the powder-liquid double-chamber bags 4 are driven out of the gas curtain box 2, the openings of the powder chambers 41 are gradually closed, so that most of the nitrogen gas in the powder chambers 41 is retained, which is convenient for subsequent sealing of the powder chambers 41.

[0052] Although the preferred embodiments of the present application have been described, those skilled in the art who understand the basic inventive concept can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these changes and modifications.

Claims

1. A powder chamber inflation device for replacing oxygen in a powder chamber (41) of a powder-liquid dual-chamber bag (4), characterized in that, The nitrogen pipeline (1) and the air curtain box (2) are included, one end of the nitrogen pipeline (1) is communicated with the air curtain box (2), the other end is connected with the nitrogen source, the powder chamber (41) of the powder-liquid double-chamber bag (4) is opened after entering the air curtain box (2), and the nitrogen pipeline (1) fills nitrogen into the air curtain box (2).

2. The device according to claim 1, wherein, The nitrogen pipeline (1) includes a shunt pipe (12) and a connecting pipe, the air curtain box (2) is provided with a partition plate (26), the partition plate (26) divides the upper space in the air curtain box (2) into two or more independent chambers, each chamber is communicated with a connecting head (21), and each connecting head (21) is communicated with the shunt pipe (12) through a connecting pipe.

3. The device according to claim 2, wherein, The nitrogen pipeline (1) further includes a flow meter (14), and each connecting head (21) is provided with a flow meter (14) for controlling the flow of nitrogen between the shunt pipe (12).

4. The device according to claim 2, wherein, The powder chamber (41) of the powder-liquid double-chamber bag (4) is vertically upward, and the connecting head (21) is arranged at the top of the air curtain box (2).

5. The device according to claim 4, wherein, The air curtain box (2) is provided with a shunt plate (22), the shunt plate (22) is located in the upper space of the air curtain box (2), the periphery of the shunt plate (22) is in contact with the inner wall of the air curtain box (2), and a plurality of through holes for airflow are uniformly arranged on the shunt plate (22).

6. The device according to claim 2, wherein, The powder-liquid double-chamber bag (4) enters and exits the air curtain box (2) through the annular conveying and feeding system (3), a plurality of limiting clamps (31) for suspending and fixing the powder-liquid double-chamber bag (4) are arranged on the annular conveying and feeding system (3), and the lowest end of the partition plate (26) is higher than the highest point of the limiting clamps (31) and the powder-liquid double-chamber bag (4).

7. The device according to claim 6, wherein, The air curtain box (2) is provided with a clamp supporting strip (25), the clamp supporting strip (25) cooperates with the limiting clamps (31) to maintain the powder chamber (41) in an open state.

8. The device according to claim 7, wherein, The limiting clamps (31) include two groups of limiting columns (311), long arms (312), pivot shafts (313) and abutting rods (314), the abutting rods (314) and the long arms (312) can swing around the pivot shafts (313) as the rotation center, the top of each long arm (312) is provided with a limiting column (311), limiting holes (43) are arranged on the two sides of the powder chamber (41) of the powder-liquid double-chamber bag (4), the distance between the two limiting columns (311) is matched with the distance between the two limiting holes (43), the limiting holes (43) are sleeved on the limiting columns (311), and the clamp supporting strip (25) abuts against the two inclined abutting rods (314), so that the distance between the two limiting columns (311) is less than the distance between the two limiting holes (43).

9. The device according to claim 8, wherein, The air curtain box (2) is respectively provided with a bag body input port (23) and a bag body output port (24) in the conveying direction of the annular conveying supply system (3), the annular conveying supply system (3) enters the air curtain box (2) from the bag body input port (23) and exits from the bag body output port (24), the clamp supporting strip (25) comprises a maintaining section (252) and a sealing section (253), the maintaining section (252) is horizontally arranged and abuts against the rod (314) and is in contact with the horizontal section, the sealing section (253) is located at one end of the maintaining section (252) towards the bag body output port (24), and one end of the sealing section (253) away from the maintaining section (252) is arranged in an inclined downward manner.

10. The device according to claim 9, wherein the air inlet is arranged on the side of the bag. The clamp supporting strip (25) further comprises an opening section (251), the opening section (251) is located at one end of the maintaining section (252) towards the bag body input port (23), and one end of the opening section (251) away from the maintaining section (252) is arranged in an inclined downward manner.

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