Liquid medicine buffer tank with pressure balancing function
By introducing a pressure balancing and buffer stirring mechanism into the liquid buffer tank, the problem of liquid impact on the inner wall of the tank is solved, service life is extended and product quality is improved, and the stability and safety of the liquid treatment process are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BIOZEN PHARMA
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-12
AI Technical Summary
Existing medicine buffer tanks lack buffering devices, which can easily damage the inner anti-corrosion layer after long-term injection of medicine, affecting service life. Furthermore, the medicine is prone to sedimentation when left to stand, reducing product quality.
A medicine buffer tank with pressure balancing function was designed. It is connected to the pressure balancing mechanism through the air inlet and outlet. Combined with the buffer stirring mechanism and the buffer spring, the medicine is buffered and stirred to prevent the medicine from directly impacting the inner wall of the tank. The stirring rod is driven by a motor to avoid the formation of sediment.
It effectively prevents corrosion of the inner wall of the tank, extends its service life, and prevents sediment formation through stirring, thereby improving product quality and ensuring the stability and safety of the drug treatment process.
Smart Images
Figure CN224225816U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pharmaceutical buffer tank technology, specifically a pharmaceutical buffer tank with pressure balancing function. Background Technology
[0002] Pharmaceutical buffer tanks are key equipment used in pharmaceutical, chemical, and bioengineering fields for storing, mixing, and stabilizing pharmaceutical solutions. Their core functions are to balance system pressure fluctuations, maintain the stability of the physicochemical properties of the pharmaceutical solution, and ensure the continuity and safety of the process.
[0003] However, existing drug buffer tanks have the following problems: Since existing drug buffer tanks do not have a buffering device inside the tank, the anti-corrosion layer on the inner wall of the buffer tank is easily damaged after the drug is injected into the buffer tank for a long time, which leads to corrosion of the buffer tank wall and affects the service life of the buffer tank. At the same time, the drug in the buffer tank is prone to sedimentation when left to stand for a long time, which reduces the quality of the product.
[0004] To address the aforementioned issues, we propose a liquid buffer tank with pressure balancing function. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a medicine buffer tank with pressure balancing function to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a medicine buffer tank with pressure balancing function, comprising a support, a tank body mounted on the support, a level gauge mounted on the top of the tank body, a pressure gauge mounted on one side of the level gauge on the tank body, a motor mounted on one side of the pressure gauge on the tank body, a safety valve mounted on one side of the motor on the tank body, an inlet pipe mounted on one side of the safety valve on the tank body, and symmetrical air inlet and outlet ends mounted on both sides of the top of the tank body. The motor is connected to a buffer stirring mechanism disposed inside the tank body, and an outlet pipe is disposed at the lower end of the buffer stirring mechanism.
[0007] Preferably, the support is rectangular and fixed to the bottom side of the tank outside the liquid outlet pipe.
[0008] Preferably, the tank body includes a cylindrical stainless steel layer, a tank lid is sealed and embedded at the upper end of the stainless steel layer, a tank seat is sealed and embedded at the lower end of the stainless steel layer, a sound insulation layer is provided inside the stainless steel layer, and the stainless steel layer is made of high-strength stainless steel.
[0009] Preferably, the air inlet and air outlet are used to install a pressure balancing mechanism. The air inlet is connected to the exhaust air path of the pressure balancing mechanism, and the air outlet is connected to the intake air path of the pressure balancing mechanism. Furthermore, the air outlet can also be combined with vacuum technology to perform vacuum treatment on the container before, during, and after liquid injection to reduce gas residue. Subsequently, the gas injection is precisely controlled by the air inlet valve to maintain a low-pressure stable state and reduce the mixing of liquid medicine and gas.
[0010] The air inlet is an air inlet valve, specifically a pressure balancing air inlet valve, which is mainly used in liquid filling, storage or delivery systems. It ensures the stability of the liquid treatment process by regulating the pressure, preventing the generation of bubbles or contamination of the liquid. By monitoring the pressure changes inside the tank in real time, it automatically adjusts the air intake to maintain a constant pressure environment, avoiding abnormal liquid flow or bubble formation due to pressure fluctuations. During the filling process of the tank through the liquid inlet pipe, when the liquid level inside the tank reaches the set value, the pressure balancing mechanism opens the air inlet valve to balance the internal and external pressures, ensuring constant pressure liquid output.
[0011] The outlet end is an outlet valve, specifically a pressure balancing outlet valve, which is a key component mainly used to maintain stable pressure inside the tank and prevent overpressure or vacuum. By monitoring the pressure changes inside the tank in real time, it automatically opens or closes the outlet channel to release excess gas or introduce external air, ensuring that the pressure inside the tank is always within a preset range. When the liquid level in the tank drops, causing the pressure to decrease, the outlet valve of the pressure balancing mechanism can replenish gas to maintain balance; when the pressure is too high, it releases gas to prevent container deformation. Furthermore, the outlet valve adopts a one-way valve structure (such as a spiral valve or spring valve core), which only allows gas to flow in a set direction, preventing the liquid medicine from entering the gas channel in reverse and causing contamination.
[0012] Preferably, the lower end of the level gauge is connected to a lifting slide rod inside the tank, and a float is slidably sleeved on the lifting slide rod.
[0013] Preferably, limit blocks are symmetrically arranged at the upper and lower ends of the lifting slide rod, and a connecting line is also provided inside the lifting slide rod, the connecting line being connected to the float.
[0014] Preferably, the buffer stirring mechanism includes a stirring rod connected to the motor, and four sets of stirring plates arranged in a cross shape are provided on the stirring rod from top to bottom. A first buffer plate, a second buffer plate, and a third buffer plate are interspersed between the four sets of stirring plates from top to bottom.
[0015] Preferably, the first buffer plate, the second buffer plate, and the third buffer plate have the same structure, and limit slide rods are interspersed on the left and right sides of the first buffer plate, the second buffer plate, and the third buffer plate corresponding to the stirring rod.
[0016] Preferably, the limiting slide bar is provided with a fixing rod between the first buffer plate and the second buffer plate, as well as between the second buffer plate and the third buffer plate. A flange is fixedly provided on one side of the fixing rod, and the flange is fixedly provided to the inner wall of the tank.
[0017] Preferably, buffer springs are fixedly provided on the upper and lower surfaces of the limiting slide rod corresponding to the first buffer plate, the second buffer plate and the third buffer plate, and a limiting ring is fixedly provided on the other end of each buffer spring. The limiting rings are all fitted and fixed on the limiting slide rod.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0019] 1. This utility model connects the air inlet and outlet to the exhaust and intake air passages of the pressure balancing mechanism, respectively, so that the pressure inside the tank can be kept stable under the action of the pressure balancing mechanism. This keeps the pressure difference inside the tank within an appropriate range, thus balancing the pressure inside the tank. This not only avoids the tank from rupturing due to overpressure, but also avoids the filling difficulties caused by negative pressure inside the tank. It enables the tank to receive and discharge liquid medicine at constant pressure through the inlet and outlet pipes.
[0020] 2. This utility model uses a fixing rod fixed to the support by a flange, which is then fixed to a limiting slide rod at the end of a buffer spring. A limiting ring and a buffer spring on the limiting slide rod limit the movement of three buffer plates of the same structure: a first buffer plate, a second buffer plate, and a third buffer plate. When liquid medicine is injected into the tank through the inlet pipe, the liquid impacts the first buffer plate at the top. The first buffer plate, subjected to the impact force, slides downwards on the limiting slide rod, pressing the buffer spring. The buffer spring, supported by the limiting ring, contracts, thus buffering the first buffer plate and the injected liquid medicine. The liquid medicine impacting the first buffer plate, after a certain degree of buffering, further impacts the surrounding area, impacting the second buffer plate at the bottom. Similarly, due to the second… The buffer plate is impacted by the liquid medicine. The second buffer plate slides downwards through the limiting slide rod and presses the buffer spring. The buffer spring is supported by the limiting ring and contracts, thus simultaneously buffering the second buffer plate and providing secondary buffering for the liquid medicine. Similarly, the liquid medicine, after secondary buffering, impacts the third buffer plate at the bottom. This effectively buffers the liquid medicine injected into the tank through the inlet pipe, reducing the impact of the liquid medicine on the inner wall of the tank, protecting the anti-corrosion layer of the inner wall, and extending the service life of the tank. At the same time, the motor drives the stirring rod to rotate and stirs the liquid medicine in the tank through the stirring plate, preventing sedimentation caused by the liquid medicine standing during temporary storage and improving product quality. Attached Figure Description
[0021] Figure 1This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer shell of the medicine buffer tank of this utility model;
[0023] Figure 3 This is a schematic diagram of the internal structure of the present invention;
[0024] Figure 4 This is a schematic diagram of the buffer stirring mechanism of this utility model.
[0025] The diagram shows the following labels: 1. Support; 2. Tank body; 3. Level gauge; 4. Air inlet; 5. Pressure gauge; 6. Motor; 7. Safety valve; 8. Liquid inlet pipe; 9. Air outlet; 10. Liquid outlet pipe; 11. Stainless steel layer; 12. Sound insulation layer; 13. Buffer stirring mechanism; 14. Lifting slide bar; 15. Connecting line; 16. Float; 17. Limiting block; 18. Stirring rod; 19. Stirring plate; 20. First buffer plate; 21. Limiting slide bar; 22. Second buffer plate; 23. Third buffer plate; 24. Fixing rod; 25. Flange; 26. Limiting ring; 27. Buffer spring. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example 1
[0027] like Figure 1-2 As shown, this embodiment discloses a medicine buffer tank with pressure balancing function. It includes a support 1, a tank body 2 is provided on the support 1, a level gauge 3 is provided on the top of the tank body 2, a pressure gauge 5 is installed on one side of the level gauge 3 on the tank body 2, a motor 6 is installed on one side of the pressure gauge 5 on the tank body 2, a safety valve 7 is installed on one side of the motor 6 on the tank body 2, and an inlet pipe 8 is installed on one side of the safety valve 7 on the tank body 2. An air inlet 4 and an air outlet 9 are also symmetrically installed on both sides of the top of the tank body 2. The motor 6 is connected to a buffer stirring mechanism 13 provided inside the tank body 2, and an outlet pipe 10 is provided at the lower end of the buffer stirring mechanism 13.
[0028] In this embodiment, the support 1 is rectangular and fixed to the bottom side of the tank 2 outside the liquid outlet pipe 10 to enhance the stability of the tank 2. The tank 2 includes a stainless steel layer 11 with a cylindrical structure. The stainless steel layer 11 has a sound insulation layer 12 inside to make it corrosion resistant and reduce the noise generated during stirring.
[0029] In this embodiment, the air inlet 4 and the air outlet 9 are used to install a pressure balancing mechanism. The air inlet 4 is connected to the exhaust air path of the pressure balancing mechanism, and the air outlet 9 is connected to the intake air path of the pressure balancing mechanism. Furthermore, the air outlet 9 can also be combined with vacuum technology to perform vacuum treatment on the container before, during, and after liquid injection to reduce gas residue. Subsequently, the gas injection is precisely controlled by the air inlet valve to maintain a low-pressure stable state and reduce the mixing of liquid medicine and gas.
[0030] In this embodiment, a level gauge 3, a pressure gauge 5, and a safety valve 7 are respectively installed on the top of the tank 2. The level gauge 3 on the top of the tank 2 helps the operator to monitor the change in the amount of medicine stored in the tank 2. The pressure gauge 5 on the top of the tank 2 can intuitively display the real-time pressure value in the tank 2, effectively helping the operator to monitor the pressure status in the tank 2 and providing a basis for adjusting the pressure parameters. The safety valve 7 on the top of the tank 2 will automatically open to release pressure when the pressure in the tank 2 exceeds a set threshold, preventing the tank 2 from rupturing due to overpressure.
[0031] In this embodiment, the air inlet 4 is an air inlet valve, specifically a pressure balancing air inlet valve, which is mainly used in the liquid filling, storage or delivery system. It ensures the stability of the liquid treatment process by regulating the pressure, preventing the generation of bubbles or contamination of the liquid. By monitoring the pressure change inside the tank 2 in real time, it automatically adjusts the air intake to maintain a constant pressure environment, avoiding abnormal liquid flow or bubble formation due to pressure fluctuations. During the filling process of the tank 2 through the liquid inlet pipe 8, when the liquid level inside the tank 2 reaches the set value, the air inlet valve of the pressure balancing mechanism opens to balance the internal and external pressures, ensuring constant pressure liquid output.
[0032] In this embodiment, the gas outlet 9 is a gas outlet valve, specifically a pressure balancing gas outlet valve. It is a key component mainly used to maintain the pressure stability inside the tank 2 and prevent overpressure or vacuum. By monitoring the pressure changes inside the tank 2 in real time, it automatically opens or closes the gas outlet channel to release excess gas or introduce external air, ensuring that the pressure inside the tank 2 is always within a preset range. When the liquid level inside the tank 2 drops, causing the pressure to decrease, the gas outlet valve of the pressure balancing mechanism can replenish gas to maintain balance. When the pressure is too high, it releases gas to prevent the container from deforming. Furthermore, the gas outlet valve adopts a one-way valve structure, such as a spiral valve or a spring valve core, which only allows gas to flow in a set direction to prevent the liquid medicine from entering the gas channel in reverse and causing contamination. Example 2
[0033] like Figure 1-4As shown, this embodiment discloses a medicine buffer tank with pressure balancing function. It includes a support 1, a tank body 2 is provided on the support 1, a level gauge 3 is provided on the top of the tank body 2, a pressure gauge 5 is installed on one side of the level gauge 3 on the tank body 2, a motor 6 is installed on one side of the pressure gauge 5 on the tank body 2, a safety valve 7 is installed on one side of the motor 6 on the tank body 2, and an inlet pipe 8 is installed on one side of the safety valve 7 on the tank body 2. An air inlet 4 and an air outlet 9 are also symmetrically installed on both sides of the top of the tank body 2. The motor 6 is connected to a buffer stirring mechanism 13 provided inside the tank body 2, and an outlet pipe 10 is provided at the lower end of the buffer stirring mechanism 13.
[0034] In this embodiment, the lower end of the level gauge 3 is connected to a lifting slide rod 14 inside the tank 2. A float 16 is slidably sleeved on the lifting slide rod 14. Limiting blocks 17 are symmetrically arranged at the upper and lower ends of the lifting slide rod 14. A connecting line 15 is also provided inside the lifting slide rod 14, and the connecting line 15 is connected to the float 16. The buffer stirring mechanism 13 includes a stirring rod 18 connected to the motor 6. Four sets of stirring plates 19 are arranged in a cross shape from top to bottom on the stirring rod 18. A first buffer plate 20, a second buffer plate 22, and a third buffer plate 23 are interspersed between the four sets of stirring plates 19 from top to bottom. The first buffer plate 20, the second buffer plate 22, and the third buffer plate 23 have the same structure. Limiting slide rods 21 are interspersed on both sides of the stirring rods 18 corresponding to the first buffer plate 20, the second buffer plate 22, and the third buffer plate 23. A fixing rod 24 is provided between the first buffer plate 20 and the second buffer plate 22, as well as between the second buffer plate 22 and the third buffer plate 23. A flange 25 is fixedly provided on one side of the fixing rod 24 and is fixedly provided to the inner wall of the tank body 2. Buffer springs 27 are fixedly provided on the upper and lower surfaces of the limiting slide rods 21 corresponding to the first buffer plate 20, the second buffer plate 22, and the third buffer plate 23. A limiting ring 26 is fixedly provided on the other end of the buffer spring 27 and is fitted and fixed on the limiting slide rod 21.
[0035] Specifically, the fixing rod 24, which is fixed to the support 1 via the flange 25, is connected to the limiting slide rod 21 fixed to the end of the buffer spring 27. The limiting ring 26 and the buffer spring 27 on the limiting slide rod 21 limit the first buffer plate 20, the second buffer plate 22, and the third buffer plate 23, which have the same structure. When the liquid medicine is injected into the tank 2 through the liquid inlet pipe 8, the liquid medicine impacts the first buffer plate 20 at the top. The first buffer plate 20, under the impact force, slides downward on the limiting slide rod 21 and presses the buffer spring 27. The buffer spring 27 contracts under the support of the limiting ring 26, thereby buffering the first buffer plate 20 and thus achieving the effect of buffering the injected liquid medicine. The liquid medicine impacting the first buffer plate 20 is buffered and then further impacts the surrounding area, thus impacting the second buffer plate 22 at the lower end. Similarly, due to the impact of the liquid medicine on the second buffer plate 22, the second buffer plate 22 slides downward through the limiting slide rod 21 and presses the buffer spring 27. The buffer spring 27 is compressed by the support of the limiting ring 26, thus simultaneously buffering the second buffer plate 22, thereby buffering the liquid medicine a second time. After being buffered twice, the liquid medicine impacts the third buffer plate 23 at the lower end in sequence, thus buffering the liquid medicine a third time, thereby completing the purpose of buffering the liquid medicine in the injection tank 2.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.
[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A liquid buffer tank with pressure balancing function, comprising a support (1), characterized in that: The support (1) is provided with a tank (2). A level gauge (3) is provided on the top of the tank (2). A pressure gauge (5) is installed on one side of the level gauge (3) on the tank (2). A motor (6) is installed on one side of the pressure gauge (5) on the tank (2). A safety valve (7) is installed on one side of the motor (6) on the tank (2). An inlet pipe (8) is installed on one side of the safety valve (7) on the tank (2). An air inlet (4) and an air outlet (9) are symmetrically installed on both sides of the top of the tank (2). The motor (6) is connected to a buffer stirring mechanism (13) provided inside the tank (2). An outlet pipe (10) is provided at the lower end of the buffer stirring mechanism (13).
2. The medicine buffer tank with pressure balancing function according to claim 1, characterized in that: The support (1) is rectangular and fixed to the bottom side of the tank (2) outside the liquid outlet pipe (10).
3. The liquid buffer tank with pressure balancing function according to claim 1, characterized in that: The tank (2) includes a stainless steel layer (11) with a cylindrical structure, and a sound insulation layer (12) is provided inside the stainless steel layer (11).
4. The medicine buffer tank with pressure balancing function according to claim 1, characterized in that: The air inlet (4) is an air inlet valve, and the air outlet (9) is an air outlet valve.
5. The liquid buffer tank with pressure balancing function according to claim 1, characterized in that: The lower end of the level gauge (3) is connected to a lifting slide rod (14) inside the tank (2), and a float (16) is slidably sleeved on the lifting slide rod (14).
6. The liquid buffer tank with pressure balancing function according to claim 5, characterized in that: Limiting blocks (17) are symmetrically arranged at the upper and lower ends of the lifting slide (14). A connecting line (15) is also provided inside the lifting slide (14), and the connecting line (15) is connected to the float (16).
7. The liquid buffer tank with pressure balancing function according to claim 1, characterized in that: The buffer stirring mechanism (13) includes a stirring rod (18) connected to the motor (6). The stirring rod (18) is provided with four sets of stirring plates (19) arranged in a cross shape from top to bottom. A first buffer plate (20), a second buffer plate (22) and a third buffer plate (23) are interspersed between the four sets of stirring plates (19) from top to bottom.
8. The liquid buffer tank with pressure balancing function according to claim 7, characterized in that: The first buffer plate (20), the second buffer plate (22) and the third buffer plate (23) have the same structure. The first buffer plate (20), the second buffer plate (22) and the third buffer plate (23) are provided with limit sliding rods (21) on the left and right sides of the stirring rod (18).
9. The liquid buffer tank with pressure balancing function according to claim 8, characterized in that: The limiting slide bar (21) is provided with a fixing rod (24) between the first buffer plate (20) and the second buffer plate (22) and between the second buffer plate (22) and the third buffer plate (23). A flange (25) is fixedly provided on one side of the fixing rod (24), and the flange (25) is fixedly provided on the inner wall of the tank (2).
10. The pharmaceutical buffer tank with pressure balancing function according to claim 9, characterized in that: The limiting slide bar (21) is fixedly provided with buffer springs (27) on the upper and lower surfaces corresponding to the first buffer plate (20), the second buffer plate (22) and the third buffer plate (23). The other end of the buffer springs (27) is fixedly provided with limiting rings (26), and the limiting rings (26) are all fitted and fixed on the limiting slide bar (21).