JPH0135228Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a recovery flask support device for a rotary evaporator.

[Prior Art] Generally, in the case of a rotary evaporator, a sample container such as a flask attached to a mounting part of a rotary drive device is rotated in a heating device such as a water bath or an oil bath while heating the sample inside the sample container. Separation and collection is now possible using a collection flask.

There are two types of collection flasks used to collect samples: ball joint types that can be attached and detached from any direction within a 360 degree angle to the connecting tube attachment point, and cone types that can be attached and detached only in the axial direction.

Ball joint type and cone type are
It has a structure in which the mouth flange of the recovery flask and the mounting flange of the connecting tube are joined and connected by a clamp.

[Problems with the Prior Art] In such a structure, for example, in order to attach the collection flask, the mouth flange of the collection flask is aligned with the attachment flange of the connecting pipe, and then the collection flask is connected with a clip. Also, when removing it,
The process procedure is the reverse of the above, and the series of attachment and detachment operations are performed while holding the collection flask.

In particular, as the rotary evaporator becomes larger, the collection flask also becomes larger, making it dangerous to drop it, and in the case of a cone type, the flange at the mouth of the collection flask must be completely separated from the mounting flange of the connecting pipe. There was a problem in that it had to be moved in the axial direction, making installation and removal very troublesome.

Therefore, this idea makes it easy to install and remove collection flasks as they increase in size, even if they are ball joint type or cone type.
It is an object of the present invention to provide a recovery flask support device for a rotary evaporator that allows safe recovery.

[Means for Solving the Problems] In order to achieve the above object, this invention includes a sample container attached to the attachment part of the rotary drive device, and a heating device for heating the sample in the container. , a rotary evaporator equipped with a collection flask removably attached to a connecting pipe connected to a rotary drive device, a flask support arm supporting the bottom of the collection flask on a column fixed to a base of the evaporator; The arm is mounted so that it can be raised and lowered, and a spring is interposed in the mounting portion of the arm to bias it upward.

[Function] In such a configuration, for example, in order to remove the coupled collection flask, after removing the clip at the coupling part, the collection flask is moved against the spring and the flask support arm is lowered, so that the coupling part is separated. Become. To install, place the bottom of the collection flask on the flask support arm, point it downward against the spring, and release your hand while aligning the joint, and the spring will force a strong connection. .

[Embodiment] Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings of FIGS. 1 to 4.

In the figure, reference numeral 1 indicates a main body mounted on a base 3, and a rotation drive device 7 having a container mounting portion 5 is mounted on the main body 1.

A sample container 9 is attached to the attachment portion 5 of the rotation drive device 7 .

The sample container 9 is shaped like a flask and has a mouth part 11.
a mounting flange 1 having a plurality of engagement grooves 13;
5 is installed.

The container attachment part 5 is a rotating flange 1 whose rotation is controlled by a control part 15 built into the main body 1.
7, and a screw rod 19 pivotally supported on the flange 17.
and a wing nut 21 screwed into the threaded portion of the threaded rod 19, and the threaded portion 19 is connected to the mounting flange 1.
It is fitted in the engagement groove 13 of No. 5.

On the other hand, below the sample container 9 is a heating device 25 such as a water bath that can be moved up and down by a lifting device 23.
is installed.

The lifting device 23 includes a lift arm 27 that protrudes from the opening 1a of the main body 1 and has a heating device 25 mounted thereon, and a transmission motor 29 that is attached to the arm 27 and can be turned forward or backward by a control switch of the control section 16.
And the rotational power of the motor 29 is decelerated to make it easy 3.
a drive unit 37 consisting of a deceleration mechanism 35 that transmits transmission to a pinion gear 33 that meshes with the lift arm 2;
It has a guide rod 41 through which the base end 39 of No. 7 passes,
Both upper and lower ends of the guide rod 41 and the rack 31 are fixedly supported by the main body 1 via brackets 43, 43. As a result, the heating device 25 moves up and down due to the forward and reverse rotation of the transmission motor 29, and as the heating device 25 rises, the bottom of the sample container
Distillation began to take place inside the bath.

On the other hand, a connecting pipe 45 coupled to the rotational drive device 7
includes a condenser 47 and a recovery flask 5 facing the condenser 47 and whose bottom is supported by a support device 49.
1 are combined.

The joint of the collection flask 51 is of a ball joint type in which a mounting flange 53 extending from the connecting pipe 45 and a mouth flange 55 of the collection flask 51 are fixed by a clamp 57.

The support device 49 that supported the recovery flask 51 is
A column 59 is fixed to the base 3, and an arm base 61 is rotatable 360 degrees to the column 59 by a fixing bolt 63, and a flask support arm 65 is attached to the column 59 so as to be movable up and down. The spring 67 biases the arm base 6 toward the arm base 6.
The spring pressure of the spring 67 can be adjusted by moving the support body 69 up and down by adjusting a set bolt 71 which is interposed between the spring support body 69 attached to the spring support body 1 and the support column 59, and is screwed into the support body 69. It is becoming more and more like this.

Note that 73 indicates a ring-shaped support portion on which the bottom of the collection flask 51 is placed, and is fixed to the tip of the flask support arm 65.

In the rotary evaporator configured in this manner, the clamp 57 is removed to release the collection flask 51 after the work has been completed. In this case, since the collection flask 51 rests on the support portion 73, there is no need to support the collection flask 51, and it can be easily removed by one person. Next, the fixing bolt 63 is loosened to leave the arm base 61 in a free state, and the collection flask 51 is pushed down against the spring 67 so that the mounting flange 53 and the mouth flange 55 are vertically separated. Therefore, by lifting the recovery flask 51 in this state, the flask 51 can be removed by one person.
The mounting flange 53 and mouth flange portion 55 in the uncoupled state with the clamp 57 removed are connected to the spring 67.
Since it is a cone type, it can be removed without any trouble because it can be separated vertically by the action of .

Next, when installing, after placing the bottom of the collection flask 51 on the support part 73, press the flask 51 downward against the spring 67, align it with the mouth flange part 55 and the mounting flange 53, and then manually Let go. At this time, the opening flange portion 55 and the mounting flange 53 are brought into a bonded state in which they are in strong contact with each other due to the action of the spring 67, so after the clamp 57 is mounted in this bonded state, the fixing bolt 63 is tightened. As a result, the mouth flange portion 55 and the attachment flask 53 are supported in a securely connected state.

[Effects of the invention] As explained above, the collection flask support device of this invention allows one person to easily and safely attach and detach the collection flask, and the joint is strong due to the action of the spring. Since it is in a bonded state, a reliable connection can be obtained when the clamp is installed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a support device for a rotary evaporator of this invention, FIG. 2 is a cutaway front view showing an elevating device for a heating device, and FIG. 3 is an explanatory view of the support device. Explanation of main drawing symbols, 3...Base, 5...Mounting section, 7...Rotary drive device, 9...Sample container, 2
5... Heating device, 45... Connecting pipe, 51... Collection flask, 53... Mounting flange, 59... Support column, 65... Flask support arm, 67... Spring.

Claims (1)

[Scope of utility model registration request] A sample container attached to the attachment part of the rotation drive device, a heating device for heating the sample in the container, and a collection flask detachably attached to the attachment flange of the connection pipe connected to the rotation drive device. In a rotary evaporator equipped with a rotary evaporator, a flask support arm that supports the bottom of the collection flask is attached to a column fixed to the base of the evaporator so as to be able to rise and fall freely, and a spring is applied to the attachment part of the arm to bias it upward. A recovery flask support device for a rotary evaporator, characterized in that: