A dilution tank for vitamin B12 injection production

By installing removable filter elements at the inlet and outlet of the diluent tank, combined with stirring and sensor monitoring, the problem of incomplete removal of impurities in the diluent tank is solved, improving the purity of the drug solution and production safety, and reducing maintenance costs.

CN224388617UActive Publication Date: 2026-06-23TIANJIN RUIHEFENG PHARM TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN RUIHEFENG PHARM TECH CO LTD
Filing Date
2025-05-16
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

The existing dilution tanks for vitamin B12 injection lack effective filtration mechanisms, which prevents impurities from being removed in time during the dilution process, affecting the clarity and purity of the solution and increasing the risk of contamination in the production process.

Method used

A detachable first filter element and a second filter element are installed at the inlet and outlet of the dilution tank, respectively, and connected by a corrugated telescopic tube. Combined with the monitoring and control of a magnetic stirrer and temperature and pressure sensors, the liquid is subjected to dual filtration and safe stirring.

Benefits of technology

It achieves dual filtration of the liquid medicine, ensuring the purity of the liquid medicine and the safety of production, while reducing maintenance costs and operational complexity.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224388617U_ABST
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Abstract

The utility model relates to a dilution tank for vitamin B12 injection production, which comprises a tank body, a sealing cover installed on the top of the tank body, a liquid inlet arranged on one side of the top of the tank body, a water inlet arranged on the other side of the top of the tank body, a liquid outlet arranged at the bottom of the tank body, a first filter element installed in the liquid inlet and extending into the tank body, a second filter element installed in the liquid outlet, an L-shaped liquid discharge pipe installed at the bottom of the liquid outlet, a corrugated flexible pipe arranged on the vertical section of the liquid discharge pipe, the second filter element arranged in the corrugated flexible pipe, a hanger connected with the liquid discharge pipe arranged at the bottom of the tank body, a safety valve and an ultrasonic liquid level sensor installed on the top of the sealing cover, a temperature sensor arranged on the inner wall of the tank body, a pressure sensor arranged on the bottom of the inner wall, a plurality of sampling valves arranged on one side of the tank body from top to bottom, and magnetic stirrers arranged on both sides of the bottom of the tank body and symmetrical to the liquid outlet. The utility model adds a filtering function, thereby improving the purity and production safety of the liquid medicine.
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Description

Technical Field

[0001] This utility model relates to the field of liquid preparation tanks, and more particularly to a dilution preparation tank for the production of vitamin B12 injection. Background Technology

[0002] In the production of vitamin B12 injection, the dilution tank is a key piece of equipment, mainly used to dilute the concentrated solution to the required final concentration. Chinese utility model patent CN218307629U discloses a dilution tank, including a tank body and a sealing cap on top of the tank body. The bottom of the tank body has a discharge port and a magnetic stirrer. The sealing cap has a feed port, a cleaning port, and a manhole. The cleaning port has a cleaning nozzle. The tank body has a temperature sensor for detecting the material temperature inside. The top of the tank body has a pressure gauge and a vent. The side of the tank body has a sampling port. This utility model offers convenient detection and cleaning, and allows for real-time temperature and pressure monitoring, showing good market potential. However, this dilution tank lacks an effective filtration mechanism, resulting in the inability to remove impurities from the solution during dilution. This not only affects the clarity and purity of the solution but may also increase the risk of contamination in subsequent production stages. Summary of the Invention

[0003] The present invention aims to address the shortcomings of the prior art by providing a dilution container for the production of vitamin B12 injection.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a dilution tank for the production of vitamin B12 injection solution, comprising a tank body, a sealing cap installed on the top of the tank body, and several support legs installed on the bottom of the side wall of the tank body. One side of the top of the side wall of the tank body has a liquid inlet, and the other side has a water inlet. The bottom of the tank body has a liquid outlet. A first filter element is detachably installed inside the liquid inlet and extends into the tank body. A second filter element is detachably installed inside the liquid outlet. An L-shaped drain pipe is detachably installed at the bottom of the liquid outlet. The vertical section of the drain pipe has a corrugated telescopic tube, and the second filter element is located inside the corrugated telescopic tube. A hanger connected to the drain pipe is provided at the bottom of the tank body. A safety valve and an ultrasonic level sensor are respectively installed on the top of the sealing cap. A temperature sensor is provided on the lower part of the inner wall of the tank body, and a pressure sensor is provided at the bottom of the inner wall. Several sampling valves are provided from top to bottom on one side of the tank body. Magnetic stirrers are symmetrically arranged on both sides of the bottom of the tank body about the liquid outlet. Control boxes connected to the safety valve, ultrasonic level sensor, temperature sensor, pressure sensor, and magnetic stirrer are respectively installed on the support legs.

[0005] Specifically, the inner wall of the liquid inlet is provided with a first mounting ring, the inlet end of the first filter element is provided with a first connecting sleeve, the first connecting sleeve is threaded into the first mounting ring, and a handle is provided radially inside the first connecting sleeve.

[0006] Specifically, a second mounting ring is provided on the inner wall of the outlet, and a second connecting sleeve is provided at the inlet end of the second filter element. The second connecting sleeve is threaded into the second mounting ring.

[0007] Specifically, the top of the inlet end and the bottom of the outlet end of the drain pipe are fixed by flange bolts.

[0008] Specifically, the inner wall of the tank has a cavity for circulating cooling water, with a cooling water inlet at the top and a cooling water outlet at the bottom.

[0009] The beneficial effects of this utility model are as follows: By setting a first filter element in the liquid inlet and a second filter element in the liquid outlet, this utility model facilitates double filtration of the liquid medicine, effectively removing impurities and ensuring the purity of the liquid medicine and production safety; at the same time, the setting of the first mounting ring, the first connecting sleeve, the handle, the second mounting ring, the second connecting sleeve, and the corrugated telescopic tube makes it possible to disassemble and replace the first and second filter elements without complicated tools or operations, thus reducing maintenance costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0012] In the diagram: 1-Tank body; 2-Sealing cover; 3-Support leg; 4-Liquid inlet; 5-Water inlet; 6-Liquid outlet; 7-First filter element; 8-Second filter element; 9-Drain pipe; 10-Corrugated telescopic pipe; 11-Hanger; 12-Safety valve; 13-Ultrasonic level sensor; 14-Temperature sensor; 15-Pressure sensor; 16-Sampling valve; 17-Magnetic stirrer; 18-Control box; 19-First mounting ring; 20-First connecting sleeve; 21-Handle lever; 22-Second mounting ring; 23-Second connecting sleeve; 24-Cavity; 25-Cooling water inlet; 26-Cooling water outlet;

[0013] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] like Figures 1-2As shown, a dilution tank for the production of vitamin B12 injection includes a tank body 1, a sealing cap 2 installed on the top of the tank body 1, and several support legs 3 installed on the bottom of the side wall of the tank body 1. A cavity 24 for circulating cooling water is formed inside the inner wall of the tank body 1. A cooling water inlet 25 is provided at the top of the cavity 24, and a cooling water outlet 26 is provided at the bottom. A liquid inlet 4 is provided on one side of the top of the side wall of the tank body 1, and a water inlet 5 is provided on the other side. A liquid outlet 6 is provided at the bottom of the tank body 1. A first filter element 7, which extends into the tank body 1, is detachably installed inside the liquid inlet 4. A second filter element 8 is detachably installed inside the outlet 6, and an L-shaped drain pipe 9 is detachably installed at the bottom of the outlet 6. The top of the inlet end of the drain pipe 9 and the bottom of the outlet 6 are fixed by flange bolts. A corrugated expansion tube 10 is provided in the vertical section of the drain pipe 9, and the second filter element 8 is located inside the corrugated expansion tube 10. A hanger 11 connected to the drain pipe 9 is provided at the bottom of the tank body 1. The first filter element 7 of the inlet 4 can initially filter out impurities in the liquid medicine, and the second filter element 8 of the outlet 6 can further remove impurities, realizing double filtration and ensuring the purity of the liquid medicine.

[0016] Specifically, the inner wall of the inlet 4 is provided with a first mounting ring 19, the inlet end of the first filter element 7 is provided with a first connecting sleeve 20, the first connecting sleeve 20 is threadedly connected to the first mounting ring 19, and a handle 21 is radially provided inside the first connecting sleeve 20; the inner wall of the outlet 6 is provided with a second mounting ring 22, the inlet end of the second filter element 8 is provided with a second connecting sleeve 23, the second connecting sleeve 23 is threadedly connected to the second mounting ring 22; the disassembly and replacement of the first filter element 7 and the second filter element 8 do not require complicated tools or operations, thus reducing maintenance costs.

[0017] A safety valve 12 and an ultrasonic level sensor 13 are respectively installed on the top of the sealing cap 2. A temperature sensor 14 is installed on the lower part of the inner wall of the tank 1, and a pressure sensor 15 is installed on the bottom of the inner wall. Several sampling valves 16 are installed on one side of the tank 1 from top to bottom. Magnetic stirrers 17 are symmetrically arranged on both sides of the bottom of the tank 1 about the liquid outlet 6. A control box 18 is installed on the support leg 3, which is connected to the safety valve 12, ultrasonic level sensor 13, temperature sensor 14, pressure sensor 15, and magnetic stirrer 17 respectively. Specifically, the temperature sensor 14 and pressure sensor 15 monitor the temperature and pressure inside the tank 1, and control the flow of cooling water into the cavity 24 and the opening and closing of the safety valve 12 as needed to achieve temperature and pressure regulation. The ultrasonic level sensor 13 monitors the liquid level inside the tank 1. When it is necessary to sample the diluted solution, the sampling valve 16 is opened, and the liquid flows into the sampling bottle through the sampling tube. After sampling is completed, the sampling valve 16 is closed.

[0018] In operation, the medicinal liquid enters the first filter element 7 through the inlet 4, undergoes initial filtration, and then flows into the tank 1. Water enters through the inlet 5 and is mixed by the magnetic stirrer 17. The diluted medicinal liquid then enters the second filter element 8 through the outlet 6, undergoes further filtration, and then flows out through the drain pipe 9. To replace the first filter element 7, simply hold the handle 21 and unscrew it from the inlet 4. To replace the second filter element 8, disconnect the drain pipe 9 from the outlet 6, pull down the corrugated telescopic tube 10 to expose the second filter element 8, and then unscrew it from the outlet 6. This invention adds a filtration function, improving the purity of the medicinal liquid and production safety.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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 utility model according to the specific circumstances.

[0022] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A dilution tank for the production of vitamin B12 injection solution, comprising a tank body (1), a sealing cover (2) mounted on the top of the tank body (1), and a plurality of legs (3) mounted on the bottom of the side wall of the tank body (1), characterized in that, The tank body (1) has an inlet (4) on one side of the top side wall and a water inlet (5) on the other side. The tank body (1) has an outlet (6) at the bottom. A first filter element (7) that extends into the tank body (1) is detachably installed in the inlet (4). A second filter element (8) is detachably installed in the outlet (6). An L-shaped drain pipe (9) is detachably installed at the bottom of the outlet (6). A corrugated telescopic pipe (10) is provided in the vertical section of the drain pipe (9). The second filter element (8) is located inside the corrugated telescopic pipe (10). The tank body (1) has a hanger (11) at the bottom that connects to the drain pipe (9). A sealing cover is provided. (2) A safety valve (12) and an ultrasonic level sensor (13) are installed on the top respectively. A temperature sensor (14) is installed on the lower part of the inner wall of the tank (1), and a pressure sensor (15) is installed on the bottom of the inner wall. Several sampling valves (16) are installed on one side of the tank (1) from top to bottom. Magnetic stirrers (17) are symmetrical about the liquid outlet (6) on both sides of the bottom of the tank (1). A control box (18) is installed on the support leg (3) and is connected to the safety valve (12), ultrasonic level sensor (13), temperature sensor (14), pressure sensor (15), and magnetic stirrer (17) respectively.

2. The dilution tank for the production of vitamin B12 injection solution according to claim 1, characterized in that, The inner wall of the liquid inlet (4) is provided with a first mounting ring (19), the inlet end of the first filter element (7) is provided with a first connecting sleeve (20), the first connecting sleeve (20) is threaded into the first mounting ring (19), and a handle (21) is provided radially inside the first connecting sleeve (20).

3. A dilution tank for the production of vitamin B12 injection solution according to claim 1, characterized in that, The inner wall of the outlet (6) is provided with a second mounting ring (22), and the inlet end of the second filter element (8) is provided with a second connecting sleeve (23), which is threaded into the second mounting ring (22).

4. A dilution tank for the production of vitamin B12 injection solution according to claim 1, characterized in that, The top of the inlet end of the drain pipe (9) and the bottom of the outlet (6) are fixed by flange bolts.

5. A dilution tank for the production of vitamin B12 injection solution according to claim 1, characterized in that, The inner wall of the tank (1) has a cavity (24) for circulating cooling water. The top of the cavity (24) has a cooling water inlet (25) and the bottom has a cooling water outlet (26).