A magnetic stirring rod and a method of assembling the same

Abstract

The application relates to the technical field of magnetic stirring culture bottles, and discloses a magnetic stirring rod and an assembling method thereof, which comprises a mounting shaft, a shaft sleeve, a clamping sleeve, a stirring part, the stirring part comprises an outer cylinder, a blade and a magnetic rod, the outer cylinder comprises a cylinder body and a sealing and pressing part arranged at the top of the cylinder body, a containing cavity is arranged in the cylinder body, the top of the containing cavity is provided with an opening, the bottom is closed, the sealing and pressing part is arranged along the edge of the opening, the blade is arranged at the bottom outer periphery of the outer cylinder, the magnetic rod is encapsulated at the bottom of the outer cylinder, the clamping sleeve and the shaft sleeve are sequentially sleeved on the outer periphery of the mounting shaft from top to bottom, the downward sliding of the shaft sleeve relative to the mounting shaft is limited, the sealing and pressing part can be pressed and combined towards the center position of the opening relative to the cylinder body through hot pressing to form a limiting flange, the limiting flange abuts against the top end of the clamping sleeve, and the bottom end of the clamping sleeve is matched with the top end of the shaft sleeve. The mounting shaft, the clamping sleeve and the shaft sleeve are limited in the outer cylinder through the hot pressing of the opening end of the outer cylinder, and the magnetic rotation efficiency of the stirring rod is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnetic stirring culture bottles, in particular to a magnetic stirring rod and an assembling method thereof. BACKGROUND

[0002] The magnetic stirring cell culture bottle is a cell culture container used in cooperation with a magnetic stirrer. The principle is to use a magnet at the bottom of the bottle to drive a suspended impeller or paddle to disturb the culture solution in the bottle, so that the cells remain in a suspended state. The magnetic stirring cell culture bottle is suitable for large-scale in vitro cell culture. For cell lines that can grow in suspension, using a suspension culture bottle can simply and economically culture a large number of cells.

[0003] At present, the patent document CN215103320U discloses a stirring type cell culture bottle, which comprises an upper cover and a stirring assembly installed on the bottom surface of the upper cover. The stirring assembly comprises a mounting rod and a stirring paddle. The top of the mounting rod is connected with the upper cover. The stirring paddle comprises an outer cylinder and blades arranged on the side wall of the outer cylinder. In order to realize the rotation of the stirring paddle relative to the mounting rod and prevent the stirring paddle from falling off the mounting rod, a through hole is formed in the outer cylinder and extends through the upper and lower end faces of the outer cylinder. A limiting ring is arranged at the bottom of the mounting rod. The specific assembling method is as follows: the mounting rod is inserted into the outer cylinder from bottom to top, and the mounting rod is limited by the eaves part and the cap part and the sliding bearing. Based on the technical feature, only the lower end of the mounting rod is limited during use, and the upper end of the stirring rod is not limited. When the outer cylinder rotates around the stirring rod, shaking is easy to occur, which affects the magnetic rotation efficiency of the stirring paddle. SUMMARY

[0004] The purpose of the present application is to insert the mounting shaft, the shaft sleeve and the sleeve from top to bottom into the inside of the outer cylinder, to heat-press the opening end of the outer cylinder, to limit the mounting shaft and the sleeve in the inside of the outer cylinder, and to make the stirring rod rotate at a uniform speed in the axial direction, thereby improving the magnetic rotation efficiency of the stirring rod.

[0005] In order to achieve the above-mentioned purpose, the present application provides a magnetic stirring rod and an assembling method thereof, which comprises a mounting shaft, a shaft sleeve, a sleeve, and a stirring part. The stirring part comprises an outer cylinder, blades and a magnetic rod. The outer cylinder comprises a cylinder body and a sealing and pressing part arranged at the top of the cylinder body. A containing cavity is arranged in the cylinder body. The top of the containing cavity is provided with an opening, and the bottom is closed. The sealing and pressing part is arranged along the edge of the opening. The blades are arranged at the bottom of the outer cylinder. The magnetic rod is encapsulated at the bottom of the outer cylinder. The sleeve and the shaft sleeve are sequentially sleeved on the outer periphery of the mounting shaft from top to bottom, and the downward sliding of the shaft sleeve relative to the mounting shaft is limited. The sealing and pressing part can be pressed and fitted towards the center position of the opening relative to the cylinder body by heat pressing, so as to form a limiting flange. The limiting flange abuts against the top end of the sleeve, and the bottom end of the sleeve abuts against the top end of the shaft sleeve.

[0006] Further, the outer periphery of the outer cylinder further comprises a heat insulation ring arranged between the sealing part and the cylinder body.

[0007] Further, the top end of the clamping sleeve has a circular truncated cone with gradually increasing outer diameter from top to bottom.

[0008] Further, the outer periphery of the mounting shaft is provided with an annular groove, and the shaft sleeve is clamped in the annular groove.

[0009] Further, two shaft sleeves are arranged at intervals from top to bottom, and the outer periphery of the mounting shaft is provided with two annular grooves at intervals, and the two shaft sleeves are clamped in the annular grooves one by one; the upper shaft sleeve is defined as an upper sleeve body, and the lower shaft sleeve is defined as a lower sleeve body, and the lower end surface of the clamping sleeve abuts against the upper end surface of the upper sleeve body.

[0010] Further, a plurality of convex ribs are arranged at intervals along the inner wall of the cylinder body, and the lower end of the clamping sleeve abuts against the top end of the convex rib.

[0011] Further, the cylinder body is conical with decreasing outer diameter from top to bottom.

[0012] Further, the material of the outer cylinder is polystyrene.

[0013] Further, the material of the mounting shaft is polyoxymethylene.

[0014] The application further provides an assembling method of the magnetic stirring rod, which utilizes the magnetic stirring rod, and comprises the following steps:

[0015] The clamping sleeve and the shaft sleeve are sequentially mounted on the outer periphery of the mounting shaft.

[0016] The mounting shaft with the clamping sleeve and the shaft sleeve mounted thereon is inserted into the mounting cavity of the cylinder body from top to bottom through the opening.

[0017] The sealing part is heated and bent towards the inside to form a limiting flange, so that the lower end of the clamping sleeve abuts against the upper end of the shaft sleeve, and the limiting flange abuts against the upper end of the clamping sleeve, thereby completing the assembly.

[0018] Compared with the prior art, the magnetic stirring rod and the assembling method thereof have the following beneficial effects:

[0019] By setting the mounting shaft, the shaft sleeve, the clamping sleeve, the stirring part, the accommodating cavity of the outer cylinder body has an opening at the top and is closed at the bottom, the sealing and pressing part is arranged at the opening edge, the clamping sleeve and the shaft sleeve are sequentially sleeved on the outer periphery of the mounting shaft from top to bottom, and the downward sliding of the shaft sleeve relative to the mounting shaft is limited, the sealing and pressing part can be pressed and combined relative to the center position of the opening of the cylinder body through hot pressing to form a limiting flange, the bottom end of the limiting flange is matched and abutted with the top end of the clamping sleeve, the mounting shaft is inserted into the inside of the accommodating cavity from top to bottom, and the mounting shaft and the clamping sleeve are limited in the inside of the accommodating cavity through the clamping sleeve, the shaft sleeve and the sealing and pressing part, so that the stirring rod can rotate at a uniform speed, and the magnetic rotation efficiency of the stirring rod is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of a magnetic stirring rod after assembly of some embodiments of the present application.

[0021] Figure 2 is a structural schematic view of a stirring part of a magnetic stirring rod before assembly of some embodiments of the present application.

[0022] Figure 3 is a top view of a convex rib of a magnetic stirring rod of some embodiments of the present application.

[0023] Figure 4 is a structural schematic view of a clamping sleeve of a magnetic stirring rod of some embodiments of the present application.

[0024] Figure 5 is a structural schematic view of the installation between the mounting shaft and the shaft sleeve of a magnetic stirring rod of some embodiments of the present application.

[0025] In the figure, 10 is a mounting shaft, 11 is an annular groove, 20 is a shaft sleeve, 21 is an upper sleeve body, 22 is a lower sleeve body, 30 is a clamping sleeve, 31 is a circular table, 40 is a stirring part, 41 is an outer cylinder, 411 is a sealing and pressing part, 412 is a limiting flange, 413 is an opening, 414 is a heat insulation ring, 42 is a blade, 43 is a magnetic rod, and 44 is a convex rib. DETAILED DESCRIPTION

[0026] The specific embodiments of the present application will be further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0027] In the description of the present application, it should be understood that the directions or position relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top" and "bottom" in the present application are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the present application.

[0028] As Figures 1-5 shown, the magnetic stirring rod of the preferred embodiment of the present application comprises a mounting shaft 10, a shaft sleeve 20, a sleeve 30, and a stirring part 40, wherein the stirring part 40 comprises an outer cylinder 41, a blade 42, and a magnetic rod 43, the outer cylinder 41 comprises a cylinder body and a sealing part 411 arranged on the top of the cylinder body, the cylinder body is provided with a containing cavity, the top of the containing cavity is provided with an opening 413, the bottom of the containing cavity is closed, the sealing part 411 is arranged along the edge of the opening 413, the blade 42 is arranged on the bottom outer periphery of the outer cylinder 41, the magnetic rod 43 is encapsulated in the bottom of the outer cylinder 41, the sleeve 30 and the shaft sleeve 20 are sequentially sleeved on the outer periphery of the mounting shaft 10 from top to bottom, and the downward sliding of the shaft sleeve 20 relative to the mounting shaft 10 is limited, the sealing part 411 can be pressed and combined towards the center position of the opening 413 relative to the cylinder body by hot pressing to form a limiting flange 412, the limiting flange 412 abuts against the top end of the sleeve 30, and the bottom end of the sleeve 30 abuts against the top end of the shaft sleeve 20.

[0029] The present application also provides an assembling method of the magnetic stirring rod, which utilizes the structure of the magnetic stirring rod, and comprises the following steps:

[0030] sequentially mounting the sleeve 30 and the shaft sleeve 20 on the outer periphery of the mounting shaft 10;

[0031] inserting the mounting shaft 10 with the sleeve 30 and the shaft sleeve 20 from top to bottom into the mounting cavity of the cylinder from the opening 413;

[0032] heating the sealing part 411 and bending the sealing part 411 towards the inside to form the limiting flange 412, so that the bottom end of the sleeve 30 abuts against the top end of the shaft sleeve 20, and the limiting flange 412 abuts against the top end of the sleeve 30, thereby completing the assembling.

[0033] Based on the above technical features: the top opening 413 of the containing cavity of the outer cylinder 41 is open, the bottom of the containing cavity is sealed, the sealing part 411 is arranged at the top opening 413 of the containing cavity, the bottom outer periphery of the outer cylinder 41 is provided with the blade 42, the magnetic rod 43 is encapsulated in the bottom of the outer cylinder 41, the sleeve 30 and the shaft sleeve 20 are sequentially sleeved on the outer periphery of the mounting shaft 10 from top to bottom, the downward sliding of the shaft sleeve 20 relative to the mounting shaft 10 is limited, the mounting shaft 10 is inserted into the containing cavity of the outer cylinder 41 from top to bottom, the sealing part 411 is subjected to hot pressing treatment, the sealing part 411 forms the limiting flange 412 at the opening 413 of the outer cylinder 41, and the limiting flange 412 limits the downward sliding of the outer cylinder 41 relative to the mounting shaft 10.

[0034] As some embodiments of the present application, as Figures 1-2As shown, the outer periphery of the outer cylinder 41 further comprises a heat insulation ring 414, which is arranged between the sealing and pressing part 411 and the cylinder body, and separates the sealing and pressing part 411 from the cylinder body, so as to avoid the influence of the heat pressing of the sealing and pressing part 411 on the cylinder body, and prevent the cylinder body from being deformed by heat.

[0035] As some embodiments of the present application, as shown in Figure 4 As shown, the top end of the sleeve 30 has a circular truncated cone surface 31 with an increasing outer diameter from top to bottom, and the circular truncated cone surface 31 arranged on the top end of the sleeve 30 can limit the deformation direction of the sealing and pressing part 411 when it is pressed.

[0036] As some embodiments of the present application, as shown in Figure 1 、 Figure 5 As shown, the outer periphery of the mounting shaft 10 is provided with an annular groove 11, and the shaft sleeve 20 is clamped in the annular groove 11, so that the shaft sleeve 20 is limited in position and is conveniently mounted on the mounting shaft 10.

[0037] As some embodiments of the present application, as shown in Figure 1 、 Figure 5 As shown, two shaft sleeves 20 are arranged at intervals from top to bottom, and the outer periphery of the mounting shaft 10 is provided with two annular grooves 11 at intervals, and the two shaft sleeves 20 are clamped in the annular grooves 11 one by one; the upper shaft sleeve 20 is defined as an upper sleeve body 21, and the lower shaft sleeve 20 is defined as a lower sleeve body 22, the lower end surface of the sleeve 30 abuts against the upper end surface of the upper sleeve body 21, so as to limit the sliding of the outer cylinder 41 along the mounting shaft 10 downward, and the lower sleeve body 22 can separate the mounting shaft 10 from the outer cylinder 41, so as to reduce the resistance when the outer cylinder 41 rotates.

[0038] As some embodiments of the present application, as shown in Figures 1-3 As shown, a plurality of convex ribs 44 are arranged at intervals along the inner wall of the cylinder body, and the lower end of the sleeve 30 abuts against the top end of the convex rib 44, so that the convex rib 44 limits the sliding of the sleeve 30 along the mounting shaft 10 downward.

[0039] As some embodiments of the present application, as shown in Figures 1-2 As shown, the cylinder body is in a conical shape with a decreasing outer diameter from top to bottom, and the outer cylinder 41 has a wide upper end and a narrow lower end, so as to facilitate the assembly of the mounting shaft 10, the shaft sleeve 20 and the sleeve 30 into the outer cylinder 41 before heat pressing.

[0040] As some embodiments of the present application, as shown in Figures 1-2 As shown, the material of the outer cylinder 41 is polystyrene, and the melting point of polystyrene is 166℃, which has the characteristics of stable thermal deformation at a temperature of 70-80℃, so as to facilitate the heat pressing treatment of the outer cylinder 41.

[0041] As some embodiments of the present application, as shown in Figure 1 , Figure 5 The material of the mounting shaft 10 is polyoxymethylene, which has good self-lubricating property and reduces the resistance of the outer cylinder 41 rotating along the center of the mounting shaft 10.

[0042] In summary, the embodiment of the present application provides a magnetic stirring rod and an assembling method thereof. The magnetic stirring rod comprises a mounting shaft 10, a shaft sleeve 20, a clamping sleeve 30, a stirring part 40, and an outer cylinder 41. The top of the accommodating cavity of the outer cylinder 41 has an opening 413, and the bottom is closed. The edge of the opening 413 is provided with a sealing and pressing part 411. The clamping sleeve 30 and the shaft sleeve 20 are sequentially sleeved on the outer periphery of the mounting shaft 10 from top to bottom, and the downward sliding of the shaft sleeve 20 relative to the mounting shaft 10 is limited. The sealing and pressing part 411 can be pressed and combined relative to the center position of the opening 413 by hot pressing to form a limiting flange 412. The bottom end of the limiting flange 412 is matched and abutted with the top end of the clamping sleeve 30. The mounting shaft 10 is inserted into the inside of the accommodating cavity from top to bottom. The mounting shaft 10 and the clamping sleeve 30 are limited in the inside of the accommodating cavity by the clamping sleeve 30, the shaft sleeve 20, and the sealing and pressing part 411, so that the stirring rod can rotate axially at a uniform speed, and the magnetic rotation efficiency of the stirring rod is improved.

[0043] The above only describes the preferred embodiments of the present application. It should be noted that those skilled in the art can make some improvements and replacements without departing from the technical principles of the present application. These improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A magnetic stirring bar, characterized in that include: The mounting shaft, bushing, ferrule, and stirring unit are included. The stirring unit comprises an outer cylinder, blades, and a magnetic rod. The outer cylinder includes a body and a sealing part located at the top of the body. The body has a receiving cavity with an opening at the top and a closed bottom. The sealing part is located along the edge of the opening. The blades are located on the outer periphery of the bottom of the outer cylinder. The magnetic rod is encapsulated at the bottom of the outer cylinder. The ferrule and bushing are sequentially fitted onto the outer periphery of the mounting shaft from top to bottom. The downward sliding of the bushing relative to the mounting shaft is restricted. The sealing part can be pressed against the center position of the opening relative to the body by heat pressing to form a limiting flange. The limiting flange abuts against the top of the ferrule, and the bottom end of the ferrule abuts against the top end of the bushing.

2. The magnetic stirring bar according to claim 1, characterized in that: The outer periphery of the outer cylinder also includes a heat insulation ring, which is disposed between the sealing part and the cylinder body.

3. The magnetic stirring bar of claim 1, wherein: The outer periphery of the top of the sleeve has a frustum-shaped surface with an outer diameter that gradually increases from top to bottom.

4. The magnetic stirring bar of claim 1, wherein: The mounting shaft has an annular groove on its outer periphery, and the bushing is engaged in the annular groove.

5. The magnetic stirring bar of claim 4, wherein: Two bushings are provided, spaced apart from top to bottom, and two annular grooves are provided on the outer periphery of the mounting shaft at intervals. The two bushings are engaged in each annular groove in a corresponding manner. The upper bushing is defined as the upper sleeve body, and the lower bushing is defined as the lower sleeve body. The lower end face of the ferrule abuts against the upper end face of the upper sleeve body.

6. The magnetic stirring bar of claim 1, wherein: Multiple protruding ribs are spaced apart along the inner wall of the cylinder, and the lower end of the sleeve abuts against the top of the protruding ribs.

7. The magnetic stirring bar of claim 1, wherein: The cylinder is conical in shape, with its outer diameter decreasing from top to bottom.

8. The magnetic stirring bar of claim 1, wherein: The outer cylinder is made of polystyrene.

9. The magnetic stirring bar of claim 1, wherein: The mounting shaft is made of polyoxymethylene.

10. A method of assembling a magnetic stir bar as claimed in any one of claims 1-9, characterized in that, include: Install the ferrule and bushing onto the outer periphery of the mounting shaft in sequence; The mounting shaft, which is equipped with a ferrule and a bushing, is inserted from top to bottom into the mounting cavity of the cylinder through the opening; The sealing part is heated and bent inward to form a limiting flange, so that the lower end of the sleeve abuts against the upper end of the bushing, and the limiting flange abuts against the upper end of the sleeve, thereby completing the assembly.

Images