Small-capacity injection preparation tank

Abstract

The utility model relates to the technical field of liquid preparation tanks, and discloses a small-capacity injection preparation tank which comprises a tank body and a tank cover fixedly connected to the upper end of the tank body, the lower end of the tank body is fixedly connected with a first valve communicated with the interior of the tank body, the upper end of the tank cover is fixedly connected with a motor, the output end of the motor is fixedly connected with a stirring rod, and the stirring rod is fixedly connected with a second valve. A plurality of stirring blades are fixedly connected to the outer part of the stirring rod from top to bottom in a sleeving manner; a sliding sleeve fixedly sleeves the exterior of the stirring rod and is located above the uppermost stirring blade, sliding plates are slidably connected to the interiors of the left end and the right end of the sliding sleeve, and scraping plates are fixedly connected to the ends, away from the sliding sleeve, of the sliding plates. Through the sliding fit of the sliding sleeve and the sliding plate, the scraping plate is kept in a non-contact state with the inner wall of the tank body in a mixing stage, so that the friction loss during stirring is avoided, and the service life is prolonged; during discharging, the sliding plate is driven by the telescopic cylinder to move outwards, the scraping plates on the two sides are driven by the linkage mechanism to be synchronously attached to the tank wall, residual liquid medicine is accurately scraped, and thorough discharging without residues is achieved.

Description

Technical Field

[0001] This utility model relates to the field of liquid preparation tank technology, specifically a small-capacity injection liquid preparation tank. Background Technology

[0002] In the production of small-volume injections, the product quality requires extremely high oxygen content. It is necessary to reduce the dissolved oxygen in the drug solution during the solution preparation stage, that is, to introduce inert gases such as nitrogen into the drug solution to reduce the oxygen content. Therefore, a corresponding solution preparation tank is required. However, the existing solution preparation tanks are relatively cumbersome to clean, and thus cannot meet the needs of users.

[0003] Chinese patent discloses a mixing tank for the production of medical injections (authorization announcement number CN222239787U). This patented technology, through the cooperation of a first rotating rod, a hollow column, a first bevel gear, a second bevel gear, an arc-shaped scraper, and a cross scraper, can thoroughly mix the medicine inside the mixing tank while scraping off the inner wall. This avoids the waste caused by a small amount of medicine remaining on the inner wall of the mixing tank. The operation of cleaning the inner wall of the mixing tank is relatively simple, thereby reducing the workload of the staff and improving the safety of the staff.

[0004] However, it has certain drawbacks: In fact, the inner wall does not need to be cleaned frequently during the mixing stage. Only the residue needs to be scraped off during feeding. However, the scraping mechanism (arc scraper and cross scraper) maintains continuous contact and friction with the inner wall of the mixing tank during the mixing stage, which causes the scraper and the tank wall material to wear out quickly, significantly increasing the frequency and cost of equipment maintenance. Utility Model Content

[0005] The purpose of this invention is to provide a small-capacity injection preparation container to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A small-volume injection preparation container includes a container body and a container cover fixed to the upper end of the container body. A valve connected to the interior of the container body is fixed to the lower end of the container body. A motor is fixed to the upper end of the container cover. A stirring rod is fixed to the output end of the motor. Multiple stirring blades are fixedly sleeved on the outside of the stirring rod from top to bottom.

[0008] A sliding sleeve is fixedly fitted onto the outside of the stirring rod above the uppermost stirring blade. Slide plates are slidably connected to the inside of both ends of the sliding sleeve. A scraper is fixedly connected to the end of the slide plate away from the sliding sleeve, and a slider is fixedly connected to the end of the front surface of the slide plate inside the sliding sleeve. A telescopic cylinder is fixedly connected to the upper surface of the sliding sleeve on the left side of the stirring rod. A fixing block is fixedly connected to the telescopic end of the telescopic cylinder. Sliding holes are opened on both the left and right sides of the front surface of the sliding sleeve, and a linkage mechanism is set between the two sliding holes on the front surface of the sliding sleeve.

[0009] As a further embodiment of this utility model: a valve 2 connected to the inside of the tank is fixedly connected to the lower end of the left side surface of the tank body, and a gas one-way valve connected to the inside of the tank cover is fixedly connected to the upper surface of the tank cover in front of the motor.

[0010] As a further embodiment of this utility model: the linkage mechanism includes a rotating rod, a turntable is rotatably sleeved on the outside of the rotating rod, and two arc-shaped rods are symmetrically rotatably connected inside the outer edge of the turntable, with a rotating block rotatably connected to the end of the arc-shaped rod away from the turntable.

[0011] As a further improvement of this invention, both the stirring rod and the stirring blade are located inside the tank.

[0012] As a further embodiment of this utility model: the lower end of the fixing block is fixedly connected to the upper surface of the left sliding plate, and the slider is slidably connected to the inside of the sliding hole.

[0013] As a further embodiment of this utility model: the rear end of the rotating rod is fixed to the front surface of the sliding sleeve, and the rotating rod is located between two sliding holes, and the two rotating blocks are respectively fixed to the front ends of the left and right sliders.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention utilizes the sliding cooperation between the sliding sleeve and the sliding plate to keep the scraper in a non-contact state with the inner wall of the tank during the mixing stage, avoiding frictional wear during stirring and extending service life. During material discharge, the sliding plate is driven outward by the telescopic cylinder, and the linkage mechanism drives the scrapers on both sides to synchronously adhere to the tank wall, accurately scraping away residual liquid. Combined with the layered design of the stirring blades and scraper layout, it ensures both uniform mixing and thorough discharge without residue. The nitrogen purging and venting and wall scraping actions are automatically connected through mechanical linkage and time-sharing control, maintaining a low-oxygen environment while taking into account equipment durability and liquid utilization rate, significantly improving the production efficiency and raw material recovery rate of small-volume injections. Attached Figure Description

[0016] Figure 1 A schematic diagram of a small-capacity injection preparation tank;

[0017] Figure 2This is a partial schematic diagram of a small-volume injection preparation vessel;

[0018] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0019] Figure 4 This is a schematic diagram of the linkage mechanism in a small-volume injection preparation tank.

[0020] In the diagram: 1. Tank body; 2. Tank lid; 3. Valve 1; 4. Motor; 5. Stirring rod; 6. Stirring blade; 7. Valve 2; 8. Gas check valve; 9. Sliding sleeve; 10. Slide plate; 11. Scraper; 12. Sliding block; 13. Telescopic cylinder; 14. Fixed block; 15. Sliding hole; 16. Linkage mechanism; 17. Rotating rod; 18. Turntable; 19. Arc rod; 20. Rotating block. Detailed Implementation

[0021] Please see Figure 1 and Figure 2 In this embodiment of the present invention, a small-volume injection preparation container includes a container body 1 and a container cover 2 fixed to the upper end of the container body 1. A valve 3 connected to the interior of the container body 1 is fixed to the lower end of the container body 1. A motor 4 is fixed to the upper end of the container cover 2. A stirring rod 5 is fixed to the output end of the motor 4. Multiple stirring blades 6 are fixedly sleeved on the outside of the stirring rod 5 from top to bottom. The stirring rod 5 and the stirring blades 6 are both located inside the container body 1.

[0022] The tank body 1 and the tank cover 2 are fixed together by bolts and nuts and can be opened;

[0023] The upper surface of the can lid 2 is fixed to the left side of the motor 4 and has a feed pipe connected to its interior. The feed pipe is used to add raw materials for injectable drugs into the can body 1. The feed pipe is equipped with a pipe cap.

[0024] Valve 3 is preferably an electric valve, which is used to discharge the medicine after it is opened;

[0025] The stirring blade 6 is used to stir the pharmaceutical raw materials to ensure they are mixed evenly.

[0026] exist Figure 1 In the middle: A valve 7 connected to the inside of the tank body 1 is fixedly connected to the lower end of the left side surface of the tank body 1; a gas check valve 8 connected to the inside of the tank cover 2 is fixedly connected to the upper surface of the tank cover 2 in front of the motor 4.

[0027] The left end of valve 2 7 can be connected to a nitrogen generator through a pipeline. The nitrogen generator delivers pressurized nitrogen to the inside of tank 1, thereby mixing with the pharmaceutical raw materials, reducing the oxygen content in the pharmaceutical raw materials, and maintaining low oxygen conditions during the storage, mixing and filling of the pharmaceutical, thus meeting the production requirements of small solution injections.

[0028] The gas check valve 8 allows the gas inside the tank 1 to be discharged, while preventing external gas from entering the tank 1.

[0029] exist Figures 1-4 In the middle section: A sliding sleeve 9 is fixedly sleeved above the uppermost stirring blade 6 on the outside of the stirring rod 5. Slide plates 10 are slidably connected to both ends of the sliding sleeve 9. A scraper 11 is fixedly connected to the end of the slide plate 10 away from the sliding sleeve 9, and a slider 12 is fixedly connected to the end of the front surface of the slide plate 10 inside the sliding sleeve 9. A telescopic cylinder 13 is fixedly connected to the upper surface of the sliding sleeve 9 on the left side of the stirring rod 5. A fixing block 14 is fixedly connected to the telescopic end of the telescopic cylinder 13. The lower end of the fixing block 14 is fixedly connected to the upper surface of the left slide plate 10. Sliding holes 15 are opened on both the left and right sides of the front surface of the sliding sleeve 9. The slider 12 is slidably connected to the inside of the sliding hole 15. The front surface of the sliding sleeve 9 is provided with a linkage mechanism 16 between the two sliding holes 15. The linkage mechanism 16 includes a rotating rod 17. The rear end of the rotating rod 17 is fixed to the front surface of the sliding sleeve 9, and the rotating rod 17 is located between the two sliding holes 15. The outside of the rotating rod 17 is rotatably sleeved with a turntable 18. The outer edge of the turntable 18 is symmetrically rotatably connected with two arc-shaped rods 19. The end of the arc-shaped rod 19 away from the turntable 18 is rotatably connected with a rotating block 20. The two rotating blocks 20 are respectively fixed to the front ends of the left and right sliders 12.

[0030] The scraper 11 includes a plate body and a rubber pad fixed to the plate body, and the plate body is fixed to the slide plate 10;

[0031] The telescopic cylinder 13 is preferably an electric cylinder;

[0032] When turntable 18 rotates, the two arc rods 19 will open or close simultaneously, thereby causing the two rotating blocks 20 to move in opposite directions or relative to each other;

[0033] In the initial state, the telescopic cylinder 13 is in the retracted state, and the scraper 11 does not contact the inner wall of the tank 1;

[0034] During the feeding process, the telescopic cylinder 13 extends and drives the left sliding plate 10 to move out of the sliding sleeve 9 through the fixed block 14, thereby causing the left scraper 11 to adhere to the inner wall of the tank 1. During this process, the slider 12 on the left sliding plate 10 drives the turntable 18 to rotate through an arc rod 19. The turntable 18 drives the right slider 12 to move through another arc rod 19, so that the right sliding plate 10 moves out of the sliding sleeve 9, causing the right scraper 11 to adhere to the inner wall of the tank 1, thereby scraping off the adhering agent and avoiding waste.

[0035] The working principle of this utility model is as follows: After the raw materials of the medicine are put into the tank 1 through the feed pipe, the pipe cover is closed. The motor 4 is started to drive the stirring rod 5 to drive the stirring blade 6 to stir and mix the raw materials. During the stirring process, valve 2 7 is opened, and the nitrogen generator fills the tank 1 with pressurized nitrogen to replace the oxygen. The gas one-way valve 8 discharges the original gas in the tank to maintain a low-oxygen environment. After the mixing is completed, the nitrogen supply is turned off, and stirring is stopped after a period of time. Valve 1 3 is opened to discharge the material. When discharging the material, the telescopic cylinder 13 is activated to extend. The fixed block 14 pushes the left sliding plate 10 to drive the scraper 11 to contact the inner wall of the tank 1. At the same time, the left slider 12 drives the turntable 18 to rotate through the arc rod 19. The arc rod 19 on the other side drives the right slider 12 to move outward synchronously, so that the scrapers 11 on both sides scrape off the residual medicine liquid along the tank wall to ensure that the discharge is thorough and without waste.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A small-volume injection preparation container, comprising a container body (1) and a container cover (2) fixed to the upper end of the container body (1), wherein a valve (3) communicating with the interior of the container body (1) is fixed to the lower end of the container body (1), a motor (4) is fixed to the upper end of the container cover (2), a stirring rod (5) is fixed to the output end of the motor (4), and a plurality of stirring blades (6) are fixedly sleeved on the outside of the stirring rod (5) from top to bottom; Its features are, A sliding sleeve (9) is fixedly sleeved on the outside of the stirring rod (5) above the uppermost stirring blade (6). Slide plates (10) are slidably connected to the left and right ends of the sliding sleeve (9). A scraper (11) is fixedly connected to the end of the slide plate (10) away from the sliding sleeve (9). A slider (12) is fixedly connected to the end of the front surface of the slide plate (10) inside the sliding sleeve (9). A telescopic cylinder (13) is fixedly connected to the upper surface of the sliding sleeve (9) on the left side of the stirring rod (5). A fixing block (14) is fixedly connected to the telescopic end of the telescopic cylinder (13). Sliding holes (15) are opened on both the left and right sides of the front surface of the sliding sleeve (9). A linkage mechanism (16) is set between the two sliding holes (15) on the front surface of the sliding sleeve (9).

2. The small-volume injection preparation container according to claim 1, characterized in that, A valve 2 (7) connected to the inside of the tank (1) is fixed to the lower end of the left side surface of the tank (1), and a gas check valve (8) connected to the inside of the tank (2) is fixed to the upper surface of the tank cover (2) in front of the motor (4).

3. The small-volume injection preparation container according to claim 1, characterized in that, The linkage mechanism (16) includes a rotating rod (17), a turntable (18) is rotatably sleeved on the outside of the rotating rod (17), and two arc-shaped rods (19) are symmetrically rotatably connected inside the outer edge of the turntable (18). A rotating block (20) is rotatably connected to one end of the arc-shaped rod (19) away from the turntable (18).

4. A small-volume injection preparation container according to claim 1, characterized in that, The stirring rod (5) and stirring blade (6) are both located inside the tank (1).

5. A small-volume injection preparation container according to claim 1, characterized in that, The lower end of the fixing block (14) is fixed to the upper surface of the left sliding plate (10), and the slider (12) is slidably connected to the inside of the sliding hole (15).

6. A small-volume injection preparation container according to claim 3, characterized in that, The rear end of the rotating rod (17) is fixed to the front surface of the sliding sleeve (9), and the rotating rod (17) is located between two sliding holes (15). The two rotating blocks (20) are respectively fixed to the front ends of the left and right sliders (12).

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