Detachable stirring paddle

Abstract

The utility model relates to a detachable stirring paddle which comprises a shaft sleeve, a paddle blade, a fastening assembly, a fixing assembly and a sealing assembly, the three surfaces of the shaft sleeve are respectively connected with one paddle through one group of fastening components; the shaft sleeve is connected to a reactor stirring shaft through the fixing assembly; a sealing assembly is further arranged on the shaft sleeve. Two positioning holes and four bolt holes are formed in each surface of the shaft sleeve; the fastening assembly comprises a positioning pin, four first fastening bolts, four first cover type nuts and four first nut sealing rings; each blade is fixedly connected with a flange, one end of each positioning pin is connected into the corresponding positioning hole, and the other end of each positioning pin is connected into the corresponding fixing hole of the corresponding flange; the first fastening bolt penetrates through the flange to be connected into the bolt hole, and a first nut sealing ring and a first cover type nut are arranged at the outer end of the first fastening bolt. The device is convenient to disassemble and assemble in equipment.

Description

Technical Field

[0001] The utility model relates to a detachable stirring paddle. Background Art

[0002] Bioreactors are widely used in the pharmaceutical process. Bioreactors culture cells in tanks, and often require a stirrer to keep the reactants and organisms evenly mixed to improve mass transfer efficiency. As the core device of the reactor, the choice of the agitator blade type is also crucial. After testing different types of agitators, it was found that the elephant ear agitator is the most suitable in terms of various parameter requirements. However, due to the structural characteristics of the elephant ear agitator, in large-volume bioreactors, the agitator is often too large, resulting in the agitator not being able to pass through the manhole of the equipment and being unable to be installed.

[0003] Large-volume bioreactors often use direct welding of the upper head and the cylinder, leaving a manhole for maintenance and internal operations. In order to allow the elephant ear stirring paddle to enter the tank smoothly, a common solution is to make a non-standard large-caliber equipment manhole. However, since the opening of the large-caliber equipment manhole is too large, it may increase the thickness of the equipment material and increase the equipment cost. It will also cause process risks to the reactor as a whole, such as online cleaning. Therefore, a detachable stirring paddle is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to overcome the existing defects and provide a detachable stirring paddle, which is convenient to disassemble and assemble inside the equipment.

[0005] The technical solution to achieve the above object is: a detachable stirring paddle, comprising a shaft sleeve, a paddle, a fastening assembly, a fixing assembly and a sealing assembly;

[0006] The three surfaces of the shaft sleeve are respectively connected with a blade through a set of fastening components; the shaft sleeve is connected to the stirring shaft of the reactor through the fixing component; and a sealing component is also arranged on the shaft sleeve.

[0007] Preferably, two positioning holes and four bolt holes are provided on each surface of the sleeve; the fastening assembly includes a positioning pin, four first fixing bolts, four first cover nuts and four first nut sealing rings; a flange is fixedly connected to each of the blades, one end of the positioning pin is connected to the positioning hole, and the other end is connected to the fixing hole of the flange; the first fixing bolt passes through the flange and is connected to the bolt hole, and a first nut sealing ring and a first cover nut are provided at the outer end of the first fixing bolt.

[0008] Preferably, the fixing assembly includes a second fixing bolt, a second cap nut and a second nut sealing ring; the second fixing bolt passes through the sleeve and is connected to the reactor stirring shaft, and the outer end of the second fixing bolt is provided with a second cap nut and a second nut sealing ring.

[0009] Preferably, the sealing assembly comprises two sleeve sealing rings, and one sleeve sealing ring is respectively provided at the upper and lower ports of the sleeve.

[0010] Preferably, a blade mounting sealing ring is provided between the flange end face and the shaft sleeve end face.

[0011] The beneficial effects of the utility model are as follows: the detachable stirring paddle is detachable by arranging the paddle blade to be detachably connected to the shaft sleeve, thereby avoiding the situation that the stirring paddle is too large to pass through the manhole of the equipment when the bioreactor needs to use the elephant ear stirring paddle. The utility model is convenient to use, easy to disassemble and assemble, safe and reliable, and can easily pass the static balance test to achieve a perfect stirring effect. It also makes the stirring paddle more convenient during transportation and reduces transportation risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the detachable stirring paddle of the utility model;

[0013] Figure 2 This is a front view of the detachable stirring paddle of the utility model;

[0014] Figure 3 It is a top view of the detachable stirring paddle of the utility model;

[0015] Figure 4 It is an exploded view of the detachable stirring paddle of the utility model;

[0016] Figure 5 It is a schematic diagram of the connection position of the detachable stirring paddle of the utility model.

[0017] In the figure: 1. sleeve; 2. blade; 3. sleeve sealing ring; 4. blade mounting sealing ring; 5. positioning pin; 6. first fixing bolt; 7. first cap nut; 71. first nut sealing ring; 8. second fixing bolt; 9. second cap nut; 91. second nut sealing ring; 10. reactor stirring shaft; 11. positioning hole; 12. bolt hole; 13. flange. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1-5 As shown, a detachable stirring paddle comprises a sleeve 1, a blade 2, a fastening assembly, a fixing assembly and a sealing assembly; a blade 2 is connected to each of the three surfaces of the sleeve 1 through a set of fastening assemblies; the sleeve 1 is connected to the reactor stirring shaft 10 through the fixing assembly; and a sealing assembly is also provided on the sleeve 1.

[0021] Specifically, after the blade 2 is installed, the angle between the blade 2 and the center line of the sleeve 1 is 50°, that is, when placed horizontally, the angle between the blade and the horizontal plane is 40°.

[0022] Specifically, two positioning holes 11 and four bolt holes 12 are provided on each surface of the shaft sleeve 1; the fastening assembly includes a positioning pin 5, four first fixing bolts 6, four first cap nuts 7 and four first nut sealing rings 71; a flange 13 is fixedly connected to each blade 2, one end of the positioning pin 5 is connected to the positioning hole 11, and the other end is connected to the fixing hole of the flange 13; the first fixing bolt 6 passes through the flange 13 and is connected to the bolt hole 12, and the outer end of the first fixing bolt 6 is provided with a first nut sealing ring 71 and a first cap nut 7. A blade mounting sealing ring 4 is provided between the end surface of the flange 13 and the end surface of the shaft sleeve 1.

[0023] Specifically, the fixing assembly includes a second fixing bolt 8, a second cap nut 9 and a second nut sealing ring 91; the second fixing bolt 8 passes through the sleeve 1 and is connected to the reactor stirring shaft 10, and the outer end of the second fixing bolt 8 is provided with a second cap nut 9 and a second nut sealing ring 91.

[0024] Specifically, the sealing assembly includes two shaft sleeve sealing rings 3 , and one shaft sleeve sealing ring 3 is respectively provided at the upper and lower ports of the shaft sleeve 1 .

[0025] Specifically, the impeller is disassembled in the form of parts, passed through the manhole of the equipment in turn, and reassembled inside the equipment. The sleeve 1 is used as the assembly body, and the locating pins 5 are first installed on the sleeve 1, with 2 on each mounting surface. Installing the locating pins 5 can ensure the accuracy and stability between the blade 2 and the sleeve 1; reduce the shaking of the impeller due to the installation gap during use, thereby affecting the mixing effect of the impeller. After installing the locating pins 5, the blade installation sealing ring 3 needs to be sleeved on the flange of the blade 2, and then the blade 2 is installed on the sleeve 1 in turn according to the principle of hole-to-hole alignment. At this time, the blade 2 and the sleeve 1 are not fully fitted, and they need to be tightly connected by the first tightening bolt 6 and the first cap nut 7 with a self-contained sealing ring. After completing these operations, the sealing rings at the installation surface of the blade and the installation surface of the cap nut will be squeezed to block all gaps. The risk of the medium entering the assembly gap is avoided. Make the impeller safer and more reliable when mixing and stirring. Meet the requirements for cleanability and airtightness of process equipment. Finally, the sleeve seal ring 3 is inserted into the upper and lower end surfaces of the sleeve 1, and then the second fixing bolt 8 and the second nut seal ring 91 with its own seal ring are used to install the entire stirring paddle on the reactor stirring shaft 10. At this point, the specific implementation process of the entire stirring paddle passing through the equipment manhole to reach the inside of the equipment and reassembling it to the stirring shaft has ended. The angle between the installed stirring paddle blade and the center line of the sleeve is 50°. During use, the stirring paddle operates safely, stably and reliably. It provides effective protection for large-volume cell culture.

[0026] The detachable stirring paddle is detachable by arranging the blade 2 to be detachably connected to the shaft sleeve 1, thereby avoiding the situation that the stirring paddle is too large to pass through the manhole of the equipment when the bioreactor needs to use the elephant ear stirring paddle. It is convenient to use, easy to disassemble and assemble, safe and reliable, and can easily pass the static balance test to achieve a perfect stirring effect. It also makes the stirring paddle more convenient during transportation and reduces transportation risks.

[0027] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A detachable stirring paddle, characterized in that: It comprises a shaft sleeve (1), a blade (2), a fastening assembly, a fixing assembly and a sealing assembly; The three surfaces of the shaft sleeve (1) are each connected to a blade (2) via a set of fastening components; the shaft sleeve (1) is connected to the reactor stirring shaft (10) via the fixing components; and a sealing component is also provided on the shaft sleeve (1); Two positioning holes (11) and four bolt holes (12) are provided on each surface of the shaft sleeve (1); the fastening assembly comprises a positioning pin (5), four first fixing bolts (6), four first cap nuts (7) and four first nut sealing rings (71); a flange (13) is fixedly connected to each of the blades (2), one end of the positioning pin (5) is connected to the positioning hole (11), and the other end is connected to the fixing hole of the flange (13); the first fixing bolt (6) passes through the flange (13) and is connected to the bolt hole (12), and the outer end of the first fixing bolt (6) is provided with a first nut sealing ring (71) and a first cap nut (7).

2. The detachable stirring paddle according to claim 1, characterized in that: The fixing assembly comprises a second fixing bolt (8), a second cap nut (9) and a second nut sealing ring (91); the second fixing bolt (8) passes through the shaft sleeve (1) and is connected to the reactor stirring shaft (10); the outer end of the second fixing bolt (8) is provided with a second cap nut (9) and a second nut sealing ring (91).

3. The detachable stirring paddle according to claim 1, characterized in that: The sealing assembly comprises two shaft sleeve sealing rings (3), and one shaft sleeve sealing ring (3) is respectively arranged at the upper and lower ports of the shaft sleeve (1).

4. The detachable stirring paddle according to claim 1, characterized in that: A blade mounting sealing ring (4) is provided between the end surface of the flange (13) and the end surface of the shaft sleeve (1).

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