JPH051282Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention facilitates centering and prevents damage to the attachment part of the distillation flask when mounting the distillation flask of a rotary evaporator on a rotating device. This invention relates to a structure for preventing damage during centering for a rotary evaporator.

[Prior Art] In a conventional rotary evaporator, a rotating device for a distillation flask and an end surface of the mouth of the distillation flask are connected as follows. That is, an insert ball is arranged at the opening end of the rotating device, a glass shaft is fitted therein, and the glass shaft and the end face of the distillation flask mouth are fitted via an annular spacer.
A flange provided at the open end of the rotating device and a ring-shaped flange fitted to the neck of the distillation flask via an insert ball are fastened together with bolts or the like. At that time, the axis of rotation of the rotating device and the axis of rotation of the distillation flask are manually adjusted so that they match visually, but this adjustment is an extremely difficult task for beginners and requires considerable experience and skill. It takes. For this reason, there is a problem in that the neck of the distillation flask often breaks during core-out.

[Problems to be solved by the invention] From the above-mentioned problems, it is possible for even beginners to easily install a distillation flask into a rotating device, and moreover, there is no possibility of accidents such as breakage of the neck of the distillation flask. The emergence of a structure that prevents damage during centering for rotary evaporators was expected.

The object of the present invention is to provide a breakage prevention device during centering for a rotary evaporator that solves the above problems.

[Means for solving the problem] This will be explained with reference to the drawings. In order to solve the above problems, the structure for preventing breakage during centering for a rotary evaporator according to the present invention is such that an insert ball 9 is disposed at the opening end 2 of the rotating device of the rotary evaporator 11, and a glass shaft 3 is fitted therein. Place an annular spacer 4 with a cushion material 4a on the end face of the shaft 3, fasten the flange of the rotating device open end 2 and the annular spacer 4 with tightening bolts 7 arranged at equal angular intervals, and tighten the annular spacer 4. The centering ring material 5 made of Teflon is brought into contact and fastened with the bifold bolt 8, and the bifold bolt 8 is inserted into the radial notch 6a of the ring-shaped flange 6 fitted to the neck portion 1a of the distillation flask 1 via the insert ball 10. The distillation flask mouth end surface 1b is brought into contact with the lower surface of the cushion material 4a of the annular spacer 4.

[Operation] An annular spacer 4 with a cushion material 4a is fastened to the flange of the opening end 2 of the rotating device in advance with a tightening bolt 7, a centering ring material 5 made of Teflon is attached to it, and a centering ring material 5 made of Teflon is attached to the centering ring material 5. By fitting the distillation flask 1 and the mouth end surface 1b, the end of the glass shaft 3 and the distillation flask mouth end surface 1b are connected using the annular spacer 4 with the cushion material 4a as a cushioning material. , and since the Teflon centering ring material 5 functions as a breakage prevention device guide during centering of the distillation flask 1, the opening end 2 of the rotating device
Even beginners can easily attach the distillation flask 1 to the distillation flask neck end surface 1b.
The occurrence of loss accidents is also almost eliminated.

[Example] Examples will be described with reference to the drawings.

First, an overview of the rotary evaporator will be explained.

The rotary evaporator 11 rotatably supports the upper end of the neck 1a of a spherical distillation flask 1, rotates the distillation flask 1 at a slow speed while heating it with hot water 17, boils the liquid in the distillation flask 1, and generates The gas is cooled in a heat exchanger 12 to obtain high purity liquid in a receiving flask 13. Then, the distillation flask neck end surface 1 is attached to the open end 2 of the rotating device 16 attached to the bearing 15 of the base frame 14.
b are airtightly connected. Also distillation flask 1
, it is necessary to frequently add new liquid, and it is necessary to attach and detach the neck portion 1a to and from the opening end 2 of the rotating device easily, accurately, quickly, and safely.

This attachment/detachment structure will be explained in detail. 1 is a distillation flask of rotary evaporator 11, 1
a is the neck, 1b is the end face of the mouth, 2 is the open end of the distillation flask rotating device 16, and 3 is the open end 2 of the rotating device
A glass shaft is fitted through a silicone insert ball 9, 4 is a flanged annular spacer that is applied to the lower end of the glass shaft 3, 4
Reference numeral a denotes a cushion material with a grooved cross section that is fitted into the inner circle of the annular spacer 4, and this cushion material 4a comes into contact with the enlarged diameter end of the lower part of the glass shaft 3, and is connected to the opening end of the rotating device from the upper side. A tightening bolt 7 passed through the flange of 2 is screwed into the annular spacer 4 to fix the annular spacer 4. 5 is a centering ring material made of ring-shaped Teflon that is placed on the bottom surface of the circular spacer 4, and the small diameter part of the bifold bolt 8 is inserted into the stepped hole 5a of the centering ring material 4.
After it is inserted into the annular spacer 4 and fixed by screwing, the pin 8c is rotated in the horizontal direction against the ball 8b pushed by the spring 8a to the cam part 8d, and the two folding bolts are 8 is inserted into the notch 5d provided on the side of the stepped hole 5a.

Reference numeral 6 designates a flange that is fitted into the neck portion 1a of the distillation flask 1 via a synthetic resin insert ball 10.

After fitting the mouth of the distillation flask 1 into the centering ring material 5 and bringing it into elastic contact with the lower surface of the cushion material 4a of the annular spacer 4, insert the lower half of the bi-fold bolt 8 with the pin 8c as the center core. Rotate downward, fit into the notch 6a of the ring-shaped flange 6, and tighten with the wing nut 8e.

[Effects of the invention] Since the present invention is constructed as described above, the work of aligning both axes when attaching the distillation flask 1 to the open end 2 of the rotating device is significantly simplified, and even beginners can easily perform distillation. This is convenient because the work can be done without any accidental breakage of the mouth of the flask 1.

[Brief explanation of the drawing]

Figure 1 is a front view of the entire rotary evaporator, Figure 2 is a partial sectional view taken along line A-A in Figure 1, Figure 3 is an exploded view of Figure 2, and Figure 4 is the centering ring material. FIG. 5 is a partially enlarged view of the two-fold bolt in the state shown in FIG. 2, FIG. 6 is a partially enlarged view of the two-fold bolt in the state shown in FIG. 3, and FIG. The figure is a CC view of the bifold bolt in the state shown in FIG. 2. 1... Distillation flask, 1a... Neck, 1b...
Mouth end surface, 2... Rotating device opening end, 3... Glass shaft, 4... Annular spacer, 4a... Cushion material, 5... Teflon centering ring material, 5
a...Stepped hole, 5b...Notch recess, 6...Ring-shaped flange, 6a...Notch, 7...Tightening bolt,
8...bifold bolt, 8a...spring, 8b...ball, 8c...pin, 8d...cam part, 8e...
Butterfly nut, 9...Insert ball, 10...Insert ball, 11...Rotary evaporator, 12...Heat exchanger, 13...Receiving flask, 1
4... Base frame, 15... Bearing, 16... Rotating device,
17...Hot water.

Claims (1)

[Claims for Utility Model Registration] An insert ball 9 is arranged in the opening end 2 of the rotating device of the rotary evaporator 11, and the glass shaft 3
The annular spacer 4 with the cushion material 4a is placed on the end surface of the glass shaft 3, and the flange of the opening end 2 of the rotating device and the annular spacer 4 are fastened with tightening bolts 7 arranged at equal angular intervals. , A Teflon centering ring material 5 is brought into contact with the annular spacer 4 and fastened with a bifold bolt 8, and a radial notch 6a of a ring-shaped flange 6 is fitted to the neck portion 1a of the distillation flask 1 via an insert ball 10. A structure for preventing breakage during centering for a rotary evaporator, which is formed by hooking and fixing the bifurcated bolt 8 on the bolt 8 and bringing the end face 1b of the mouth part of the distillation flask into contact with the lower surface of the cushion material 4a of the annular spacer 4.