Special-shaped tank with stirring device

Abstract

The utility model relates to the technical field of biomedical instruments, and discloses a special-shaped tank with a stirring device, which comprises a valve, a lower stirrer, a lower seal head and a tank body, the lower seal head is connected below the tank body and is communicated with the tank body, the lower seal head comprises a funnel section and a first cylindrical section, the first cylindrical section is arranged below the funnel section and is communicated with the funnel section, and the first cylindrical section is connected with the valve. The lower stirrer is arranged below the first cylindrical section of the lower sealing head, a second opening is formed in the bottom of the first cylindrical section, blades of the lower stirrer penetrate into the lower sealing head from the second opening in the bottom of the first cylindrical section, a first opening is formed in the bottom of the side wall of the first cylindrical section, and the valve is arranged on the side face of the first cylindrical section of the lower sealing head. And a discharge hole of the valve is correspondingly communicated with the open hole 1. The stirring plane of the lower stirrer coincides with the tank bottom in parallel, so that the center of the paddle is lowered, full contact between the stirrer and feed liquid is facilitated, and the minimum stirring volume of the feed liquid can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of biological medical devices, and particularly relates to a special-shaped tank with a stirring device. Background Technique

[0002] In the concentration and filtration process link of biopharmaceutical separation and purification, it is a process of separating extremely small particles and solutes from the feed liquid. Processes such as solvent replacement are required, and there are concentration changes in the feed liquid. Stirring needs to be continuously carried out in the tank. During the concentration and filtration process, parameters such as the pH and conductivity of the feed liquid need to be continuously monitored. After concentration and filtration, the volume of the feed liquid in the tank will decrease, and the liquid level will continuously drop. To achieve the maximum concentration of the feed liquid, a tank that meets the stirring and emptying of the minimum volume of the feed liquid is required.

[0003] Currently, the widely used tank heads are basically standard pressure vessel heads, including hemispherical, elliptical, butterfly-shaped, spherical crown-shaped, conical, etc. As Figure 1 shown, the upper stirring method is used. To achieve the stirring of the minimum volume of the feed liquid, the stirring blades will be close to the bottom of the tank. To achieve effective stirring, at least half of the height of the impeller needs to be submerged. At this time, the minimum stirring volume is too large.

[0004] As Figure 2 shown, the lower stirring method is used. To achieve the stirring and emptying of the minimum volume of the feed liquid, a valve 1 will be installed at the bottom of the lower head 3, and the lower stirrer 2 will be installed above the valve 1. Since the valve 1 is located at the bottom of the lower head 3, the position of the lower stirrer 2 will be higher than the valve 1, and the minimum stirring volume is also relatively large. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is that the minimum stirring volume in the existing stirring tank is relatively large, and the feed liquid cannot be stirred and concentrated to the maximum extent.

[0006] To solve the above technical problem, the technical solution of the utility model is to provide a special-shaped tank with a stirring device, including a valve, a lower stirrer, a lower head, and a tank body. The lower head is connected to the lower part of the tank body and is communicated with the tank body. The lower head includes a funnel section and a first cylindrical section. The first cylindrical section is arranged below the funnel section and the two are communicated with each other. An opening two is provided at the bottom of the first cylindrical section. The upper end of the lower stirrer penetrates into the lower head from the opening two at the bottom of the first cylindrical section. An opening one is provided at the bottom of the side wall of the first cylindrical section. The valve is arranged on the side surface of the first cylindrical section of the lower head and is correspondingly communicated with the opening one.

[0007] Optionally, the bottom surface of the first cylindrical section inclines towards the inside of the lower head, and the inclination angle A is greater than 5° and less than 85°.

[0008] Optionally, the first opening is located on the side wall of the lower height side of the bottom of the first cylindrical section. The valve includes a discharge port, and the discharge port is communicated with the first opening.

[0009] Optionally, the valve is welded to the lower head.

[0010] Optionally, the lower stirrer includes a paddle, a connecting shaft and a motor. The paddle is located inside the lower head and is connected to the motor located outside the lower head through the connecting shaft passing through the second opening.

[0011] Optionally, a sealing ring is provided between the second opening and the connecting shaft.

[0012] Optionally, the bottom stirring plane of the lower stirring paddle is an inclined plane, and the inclination angle is the same as the inclination angle of the bottom surface of the first cylindrical section, that is, the bottom stirring plane of the lower stirring paddle is parallel to the bottom surface of the first cylindrical section.

[0013] Optionally, a tank opening is provided at the upper end of the tank body, and a tank cover is provided on the tank opening.

[0014] In summary, the present utility model has at least one of the following beneficial effects:

[0015] 1. The stirring plane of the lower stirrer of the present utility model is parallel and coincident with the bottom of the tank, which reduces the center of the paddle, is beneficial to the full contact between the stirring and the liquid material, and can effectively reduce the minimum stirring volume of the liquid material.

[0016] 2. While meeting the requirement of realizing the minimum stirring volume of the liquid material, due to the existence of the first cylindrical section, the bottom of the lower head is relatively reduced, the liquid level becomes higher, the surface area and height of the lower head available for installing instruments are more, and it is convenient to install more instruments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an upper stirring tank body in the prior art;

[0018] Figure 2 is a schematic structural diagram of a lower stirring tank body in the prior art;

[0019] Figure 3 is a schematic structural diagram of the present utility model;

[0020] Figure 4 is a schematic cross-sectional structural diagram of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the lower head of the present utility model;

[0022] In the figure: 1. Valve; 2. Lower stirrer; 3. Lower head; 4. Funnel section; 5. First cylindrical section; 6. First opening; 7. Second opening; 8. Tank body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following is a further detailed description of the present utility model in conjunction with Figures 1-5 the following content.

[0024] The present utility model discloses a special-shaped tank with a stirring device. Referring to Figure 3 and Figure 4 , it includes a valve 1, a lower stirrer 2, a lower head 3 and a tank body 8. The lower head 3 is connected to the lower part of the tank body 8 and is in communication with the tank body 8. The lower head 3 includes a funnel section 4 and a first cylindrical section 5. The first cylindrical section 5 is arranged below the funnel section 4 and the two are in communication with each other. An opening two 7 is provided at the bottom of the first cylindrical section 5. The upper end of the lower stirrer 2 passes through the opening two 7 at the bottom of the first cylindrical section 5 and enters the lower head 3. An opening one 6 is provided at the bottom side wall of the first cylindrical section 5. The valve 1 is arranged on the side surface of the first cylindrical section 5 of the lower head 3 and is in corresponding communication with the opening one 6. The upper end of the tank body 8 is provided with a tank opening, and a tank cover is provided on the tank opening.

[0025] In a further embodiment, referring to Figure 5 , the bottom surface of the first cylindrical section 5 inclines downward into the interior of the lower head 3, and the inclination angle A is greater than 5° and less than 85°. The opening one 6 is located on the side wall of the first cylindrical section 5 at the lower height side of the bottom. The valve 1 includes a discharge port, and the discharge port is in communication with the opening one 1.

[0026] In a further embodiment, the lower stirrer 2 includes a paddle, a connecting shaft and a motor. The paddle is located inside the lower head 3 and is connected to the motor located outside the lower head 3 through the connecting shaft passing through the opening two 7. The bottom stirring plane of the paddle of the lower stirrer 2 is an inclined plane, and the inclination angle is the same as the inclination angle of the bottom surface of the first cylindrical section 5, that is, the bottom stirring plane of the paddle of the lower stirrer 2 is parallel to the bottom surface of the first cylindrical section 5.

[0027] Embodiment

[0028] In this embodiment, a sealing ring is provided in the opening two 7, the valve 1 is welded to the lower head 3, and the diameter D1 of the first cylindrical section 5 is smaller than the diameter D2 of the tank body 8. The installation method of this embodiment is as follows:

[0029] Step 1: Open an opening two 7 in the lower head 3 that matches the size of the transmission shaft of the lower stirrer 2;

[0030] Step 2: Weld and fix the lower stirrer 2 to the opening two 7 at the bottom of the lower head 3, and install the paddle inside the lower head 3;

[0031] Step 3: Open an opening one 6 at the lowest point of the side wall at the lower part of the bottom surface of the lower head 3, and the size of the opening one 6 matches the discharge port of the valve 1;

[0032] Step 4: Weld and fix the valve 1 at the opening one 6 of the lower head 3.

[0033] The valve 1 is fixed on the opening 6 at the lowest point of the lower head 3, that is, the discharge port of the valve 1 is flush with the bottom of the tank, so that the tank body 8 can be emptied, and the liquid material can be emptied by gravity.

[0034] The height where the blades of the lower stirrer 2 are located is the liquid level of the minimum stirring volume of the liquid material. The cavity volume below this liquid level is the minimum stirring volume of the liquid material. The minimum stirring volume of the liquid material is affected by the position of the valve 1 and the diameter of the blades. For example:

[0035] Figure 1 In it, the diameter of the tank is 750 mm, the diameter of the blade is 300 mm, and the minimum stirring height is 66 mm. The calculated minimum stirring volume is 11 L;

[0036] Figure 2 In it, when using Figure 1 a tank with the same size as that in

[0037] Figure 3 In it, when using the same Figure 1 、 Figure 2 valve 1 of the same size as Figure 2 and the same size of lower stirrer 2, the minimum stirring diameter is the diameter D2 of the first cylindrical section 5, which is 140 mm, and the minimum stirring height H is 98 mm. The calculated minimum stirring volume is 2.1 L.

[0038] Therefore, the lower stirring plane of the present utility model is parallel and coincident with the bottom of the tank, which reduces the center of the blade, is conducive to the full contact between the stirring and the liquid material. By using the same size of stirring blades, the present utility model can effectively reduce the minimum stirring volume of the liquid material; while meeting the minimum stirring volume of the liquid material, due to the relatively reduced bottom cross-section, the liquid level becomes higher, so that the instrument on the lower head 3 can be placed on the side of the first cylindrical section 5, and more instruments can be installed.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered by the scope of the claims of the present utility model.

Claims

1. A special-shaped tank with a stirring device, characterized in that: The invention comprises a valve (1), a lower stirring device (2), a lower sealing head (3) and a tank body (8); the lower sealing head (3) is connected to the bottom of the tank body (8) and is in communication with the tank body (8); the lower sealing head (3) comprises a funnel section (4) and a first cylindrical section (5); the first cylindrical section (5) is arranged below the funnel section (4) and the two are in communication with each other; a second opening (7) is arranged at the bottom of the first cylindrical section (5); the upper end of the lower stirring device (2) passes through the second opening (7) at the bottom of the first cylindrical section (5) into the lower sealing head (3); a first opening (6) is arranged at the bottom of the side wall of the first cylindrical section (5); the valve (1) is arranged on the side of the first cylindrical section (5) of the lower sealing head (3) and is in communication with the first opening (6) accordingly.

2. The special-shaped tank with a stirring device according to claim 1, characterized in that: The bottom surface of the first cylindrical section (5) is inclined toward the interior of the downward end cap (3), and the inclination angle A is greater than 5° and less than 85°.

3. The special-shaped tank with a stirring device according to claim 2, characterized in that: The opening one (6) is located on the side wall of the first cylindrical section (5) at the lower side of the bottom, and the valve (1) comprises a discharge port, which is connected to the opening one (6).

4. The special-shaped tank with a stirring device according to claim 3, characterized in that: The valve (1) is welded to the lower head (3).

5. The special-shaped tank with a stirring device according to claim 1, characterized in that: The lower stirring (2) comprises a paddle, a connecting shaft and a motor. The paddle is located inside the lower head (3) and is connected to the motor located outside the lower head (3) via the connecting shaft passing through the second opening (7).

6. The special-shaped tank with a stirring device according to claim 5, characterized in that: A sealing ring is provided between the second opening (7) and the connecting shaft.

7. The special-shaped tank with a stirring device according to claim 6, characterized in that: The bottom stirring plane of the lower stirring (2) blade is an inclined plane, and the inclination angle is the same as the inclination angle of the bottom surface of the first cylindrical section (5), that is, the bottom stirring plane of the lower stirring (2) blade is parallel to the bottom surface of the first cylindrical section (5).

8. The special-shaped tank with a stirring device according to claim 1, characterized in that: The upper end of the tank body (8) is provided with a tank opening, and the tank opening is provided with a tank cover.

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