JPH08233711A - Stirrer for sample liquid - Google Patents

Abstract

PURPOSE: To obtain a stirrer for stirring a solution, e.g. a sample liquid, surely through simple structure while reducing the manufacturing cost and installation area. CONSTITUTION: A solution, e.g. a sample liquid, is sucked from a cylindrical container through a nozzle 3 having the tip direction obliquely downward upon installation and communicating with means 2 for sucking/discharging the solution. The nozzle 3 discharges the solution to generate a vortex flow of solution in the container thus stirring the solution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirrer for effectively stirring a solution such as a sample solution.

[0002]

2. Description of the Related Art When stirring a sample liquid, for example, in a conventional stirring device, a straight nozzle tip is put into a container containing the sample liquid, and the sample liquid is sucked and discharged by the nozzle to remove the liquid inside the container. The sample solution is being stirred.

Further, in the conventional stirring device, a container with a lid containing a sample liquid to be stirred is placed in a stirrer device, the lid is opened, and a magnetic stirrer piece is placed in the container, and the container is rotated. The sample liquid of is being stirred.

Further, in the conventional stirring device, the container containing the sample liquid is placed on the manual stirring device, and the sample liquid in the container is stirred by applying vibration.

Further, in the conventional stirring device, the container containing the sample solution is set in the centrifuge, and the centrifugal force is applied to the container to stir the sample solution therein.

Further, in the conventional stirring apparatus, vibration is generated by transmitting ultrasonic waves to the container containing the sample liquid, and the sample liquid in the container is stirred by the vibration.

[0007]

However, in the conventional stirrer having the straight nozzle as described above, the sample liquid sucked by the nozzle is directed downward with respect to the sample liquid in the container to be stirred. Since it was discharged, the stirring effect could not be expected so much.

Further, in the above-mentioned conventional stirring device for stirring the sample liquid with the stirrer device, it is necessary to remove the lid of the closed container each time and then put the stirrer piece into the container. Further, there is a problem that the manufacturing cost is high when the stirrup piece is put in the container from the beginning.

Further, the conventional stirring device using the manual stirring device has a problem that the installation place becomes large because a device for generating rotation and vibration is required.

Further, in the above-mentioned conventional stirring device using a centrifuge, since a rotating device and a device for fixing the container are required, the number of parts is increased, the manufacturing cost is high, and the installation place is large. was there.

Further, the above-mentioned conventional stirring device using ultrasonic waves has a problem that the manufacturing cost becomes high because a circuit for generating ultrasonic waves and a device for transmitting vibration to the container are required.

The present invention was developed in view of the above points, and an object of the present invention is to solve the above-mentioned problems and to make it possible to reliably stir a sample solution or the like with a simple structure. Another object of the present invention is to provide a stirrer for a sample liquid or the like, which can reduce the manufacturing cost and requires a small installation area.

[0013]

In order to achieve the above object, the present invention has the following construction. That is, the stirring device for the sample liquid or the like according to claim 1 of the present invention comprises:
Suction so that the solution such as sample solution can be sucked or discharged.
It is composed of a discharge means and a nozzle which is connected to the suction / discharge means and which is formed such that the tip thereof is directed obliquely downward when it is erected.

According to a second aspect of the present invention, in a stirring device for sample liquids and the like, a pair of rails are erected on a base stand at a predetermined interval so that the rails can move up and down along the rails. A rack gear is provided, and a motor mount is erected along each rack gear, a motor is provided on each motor mount, and a pinion gear provided on the rotation shaft of each motor is meshed with each rack gear to form a motor. A plunger pump is arranged on the rail on which the rack gear is provided, in which the rack gear moves up and down with the rotation of the rack gear, and the suction or discharge operation is performed by the up and down movement of the one rack gear. The communicating nozzle is installed so as to go up and down in conjunction with the vertical movement of the other rack gear, and the tip of this nozzle is formed so as to point diagonally downward. It is a configuration.

In the sample liquid stirring device according to claim 3 of the present invention, instead of the nozzle structure according to claim 1 or 2, wherein the tip of the nozzle is formed to face obliquely downward,
The tip of the nozzle is hermetically sealed and a hole is formed in the side surface near the tip.

Further, the agitating device for the sample liquid or the like according to claim 4 of the present invention has the structure according to claim 1, 2 or 3, wherein the vertical axis center position of the nozzle is from the center of the cylindrical or polygonal container. The distance L is 0 <L ≦ r (the inner radius of the cylinder or the outer circumscribed radius of the polygon) −the nozzle radius, and the angle α formed by the sample liquid discharge direction from the nozzle and the normal to the inner surface of the container is α ≠ 0 °. The configuration is such that α ≠ 180 °.

[0017]

In the stirring device for sample liquid or the like according to claim 1 as described above, the nozzle having the tip thereof directed obliquely downward is dipped in the cylindrical container containing the solution such as the sample liquid and suctioned. The solution in the container is sucked by the nozzle by the discharging means, and the sucked solution is discharged into the container. By repeating this suction and discharge, the solution generates a swirl flow along the inner wall of the circular container. This swirling flow can stir the solution in the container.

Further, in the agitating device for the sample liquid and the like according to the second aspect, the container is placed on the base stand which is vertically advanced from the nozzle. The motor is driven to lower the rack gear and also the nozzle. Then, the tip of the nozzle is displaced toward the inner wall while keeping the tip horizontal to the bottom surface of the container. When viewed from above, the tip of the nozzle is not perpendicular to the inner wall of the container. After that, the tip of the nozzle is put into the solution in the container, the plunger pump is operated by the vertical movement of the rack gear, the solution in the container is sucked by the nozzle, and the sucked solution is discharged into the container. By repeating this suction and discharge, the solution generates a swirl flow along the inner wall of the container. This swirling flow can stir the solution in the container.

As another method, a container containing a solution such as a sample solution is placed on the base table below the nozzle. Next, the motor on the nozzle side is driven to lower the rack gear, and the tip of the nozzle is immersed in the solution in the container. Then, the container is horizontally moved and the tip of a nozzle formed so as to face obliquely downward is positioned on the container inner wall side. In addition, an empty container may be placed under the nozzle as described above, and then the solution may be injected into the container.

After the above, the motor on the plunger pump side is driven to lower the rack gear, and the plunger pump is suctioned to suck the solution in the container by the nozzle. Subsequently, the motor is rotated in the reverse direction and the plunger pump is discharged, and the sucked solution is discharged from the tip of the nozzle into the container. By repeating this suction and discharge, the solution in the container flows spirally along the inner wall, and the solution in the container can be stirred.

Further, in the sample liquid stirring device according to the third aspect of the present invention, the tip of the nozzle is sealed, and a hole is formed in the side surface near the tip, and the solution is sucked and discharged through the hole. Therefore, the solution discharged from this hole naturally flows along the inner wall side of the container, so that the solution in the container can be easily stirred.

Furthermore, in the stirrer for the sample liquid and the like according to the fourth aspect, the solution in the container can be more efficiently flowed and stirred by the above-mentioned configuration.

[0023]

Embodiments of the present invention will be described below with reference to FIGS. As shown in FIG. 1, reference numeral 1 denotes an agitating device for sample liquid or the like according to an embodiment of the present invention, which is a suction / discharge means 2 capable of sucking or discharging a solution such as sample liquid.
And a nozzle 3 which is connected to the suction / discharge means 2 and whose tip is formed to face obliquely downward when standing upright.

More specifically, the stirring device 1 described above.
Is a pair of rails 5 on the base 4 at a predetermined interval.
a and 5b are erected. Rack gears 6a, 6b are slidable vertically along the rails 5a, 5b.
Is provided.

Motor mounts 7a and 7b are provided upright along the rack gears 6a and 6b, respectively.
a and 7b are fixed to rails 5a and 5b. A motor 8 is provided near the upper end of each motor mount 7a, 7b.
a and 8b are fixed.

Further, the rotating shafts 9a of the motors 8a and 8b,
Pinion gears 10a and 10b are fixed to the tip of 9b, and the pinion gears 10a and 10b mesh with the corresponding rack gears 6a and 6b. Each motor 8a,
By rotating 8b, each rack gear 6a, 6a
b will move up and down.

A plunger pump 1 which is an example of suction / discharge means 2 is provided on the outer surface of the upper portion of the one rail 5a.
1 is provided. The plunger pump 11 includes a body 12, a plunger 13, a slider 14, a nut 15,
It is constituted by the joint 16.

The inside of the body 12 is counterbored to be hollow so that the plunger 13 can slide vertically therein. A slider 14 is fixed to the lower end of the plunger 13, and the slider 14 has a connecting portion 14a in the horizontal direction, and is fixed to the rack gear 6a via the connecting portion 14a.

Therefore, when the rack gear 6a moves down, the plunger 13 moves down together with the slider 14, and when the rack gear 6a moves up, the plunger 13 moves up together with the slider 14.
Is also set to rise. As a result, when the plunger 13 moves down together with the rack gear 6a, the plunger pump 11 performs a suction action, and when the plunger 13 moves up together with the rack gear 6a, the plunger pump 11 performs a discharge action.

On the other hand, a support stand 17 connected and fixed to the rack gear 6b is provided on the outer side of the other rail 5b, and the nozzle 3 is vertically supported on this support stand 17 via a bracket 18. The nozzle 3 can be moved up and down by the vertical movement of the rack gear 6b caused by the rotation of the motor 8b.

The tip 3a of the nozzle 3 is bent so as to face obliquely downward. Therefore, the tip end port 3b of the nozzle 3 also faces obliquely downward. The nozzle 3 is connected via the tube 19 to the body 1 of the plunger pump 11 described above.
2 is connected by a joint 16.

In the stirrer 1 for the sample liquid or the like having the above-described structure, the cylindrical container 20 is placed on the base 4 below the vertically extending nozzle 3 as shown in FIGS. Next, the motor 8b is driven to rotate the rotating shaft 9b to the right, whereby the rack gear 6b descends in the y2 direction,
The nozzle 3 also descends in conjunction with this descent, and the descent is stopped with the tip 3a of the nozzle 3 inside the container 20.

Further, the container 20 is horizontally moved to adjust the tip opening 3b of the nozzle 3 to the inner wall 20a side of the container 20 as shown in FIGS. Inject.

After doing this, the other motor 8
By driving a and rotating the rotary shaft 9a counterclockwise, the rack gear 6a descends in the Y2 direction, the plunger 13 also descends in conjunction with this operation, and the plunger pump 11 performs a suction operation. By this operation, the sample liquid in the container 20 is sucked by the nozzle 3 from the tip end port 3b.

Next, by rotating the motor 8a in the reverse direction and rotating the rotary shaft 9a to the right, the rack gear 6a is raised in the Y1 direction, and the plunger 13 is also raised in conjunction with this operation.
The plunger pump 11 will perform a discharging operation.
The sample liquid in the nozzle 3 that has been previously sucked is discharged into the container 20 again. By the discharge of the sample liquid, the sample liquid in the container 20 flows spirally along the inner wall 20a together with the discharged sample liquid.

By rotating the motor 8a forward and backward as described above, the plunger pump 11 repeats suction and discharge operations, and the sample liquid in the container can be smoothly stirred.

Further, as shown in FIGS. 7 and 8, the vertical axis center position of the nozzle 3 is a distance L from the center of the cylindrical or polygonal container to 0 <L ≦ r (the inner radius of the cylinder or the outer circumscribed radius of the polygon). -In the nozzle radius, the angle α formed by the sample liquid discharge direction from the nozzle and the normal to the inner surface of the container is α ≠ 0.
It is preferable that α and α ≠ 180 °. By thus determining the positional relationship between the nozzle 3 and the inner wall of the container 20, the solution can be stirred more effectively.

[0038]

As is apparent from the above description, in the stirrer of the present invention according to claim 1, a nozzle in which a solution such as a sample solution contained in a container is formed so that its tip faces obliquely downward By soaking the solution, repeating suction and discharge of the solution by the suction / discharge means, and discharging the solution sucked from the nozzle, a swirl flow is generated in the container, and the solution can be easily stirred. Thus, the solution in the container can be effectively agitated with a simple structure, and the number of parts is small and the manufacturing cost of the device can be reduced. Furthermore, it can be installed in a small area, and there is no vibration during stirring.

Further, in the agitator according to the present invention, the rack gear can be lowered by driving the motor on the nozzle side, and the nozzle provided on the rack gear can also be moved up and down. In the case of placing the nozzle in the container, the nozzle is once raised, the container is placed below the nozzle, and then the nozzle is made effective again, so that the tip of the nozzle can be easily inserted into the container and set at a desired position. Further, the position of the nozzle tip opening with respect to the depth of the container can be easily adjusted. Further, by driving the other motor and moving the rack gear up and down, the plunger pump can be easily sucked and discharged, and the solution in the container can be effectively stirred.

Further, in the agitator according to the third aspect of the present invention, the tip of the nozzle is hermetically sealed, and a hole is formed in the side surface near the tip, and the solution is sucked and discharged through the hole. Therefore, by positioning the tip of the nozzle closer to the inner wall of the container and repeating suction and discharge operations by a suction / discharge means such as a plunger pump, the solution discharged from the hole of the nozzle flows along the inner wall side, A swirl flow can be easily generated in it to stir the solution.

Further, in the agitating device of the present invention according to claim 4, the vertical axis center position of the nozzle is such that the distance L from the center of the cylindrical or polygonal container is 0 <L≤r (the inner radius of the cylinder or the outer radius of the inner radius of the polygon ) -By the nozzle radius, the angles α formed by the sample liquid ejection direction from the nozzle and the normal to the inner surface of the container are α ≠ 0 ° and α ≠ 180 °,
The solution in the container can be more efficiently flowed and effectively stirred.

[Brief description of drawings]

FIG. 1 is a simplified vertical sectional view of an embodiment according to the present invention.

FIG. 2 is a plan view of a cylindrical container.

FIG. 3 is a side view of a cylindrical container.

FIG. 4 is a perspective view showing a tip portion of a nozzle.

FIG. 5 is a plan view showing a state in which a tip of a nozzle is inserted into a cylindrical container.

FIG. 6 is a vertical cross-sectional view showing a state in which the tip of a nozzle is inserted into a cylindrical container.

FIG. 7 is an explanatory diagram when the tip of the nozzle is inserted into a cylindrical container.

FIG. 8 is a partially cutaway vertical sectional view in which the tip of a nozzle is inserted into a cylindrical container.

[Explanation of symbols]

 1 Stirrer for sample liquid 2 Suction / discharge means 3 Nozzle 4 Base 5a, 5b Rails 6a, 6b Rack gears 7a, 7b Motor mount 8a, 8b Motor 9a, 9b Rotating shaft 10a, 10b Pinion gear 11 Plunger pump 12 Body 13 Plunger

Claims (4)

[Claims] 1. A nozzle which is connected to the suction / discharge means capable of sucking or discharging a solution such as a sample solution and the suction / discharge means, and the tip of which is formed so as to point obliquely downward when standing upright. A stirrer for sample liquid etc. 2. A pair of rails are erected on the base stand at predetermined intervals, rack gears are provided so as to be vertically movable along the rails, and a motor mount is erected along the rack gears. In addition, a motor is provided on each motor mount, and a pinion gear provided on the rotation shaft of each motor is meshed with each rack gear so that the rack gear moves up and down as the motor rotates, and ,
A plunger pump, which is adapted to perform suction or discharge operation by vertical movement of the one rack gear, is provided on a rail provided with this rack gear, and a nozzle communicating with the plunger pump is further moved up and down in conjunction with vertical movement of the other rack gear. A stirrer for sample liquid or the like, in which the tip of the nozzle is formed so as to face obliquely downward. 3. The sample solution or the like according to claim 1, wherein the tip of the nozzle is hermetically closed, and a hole is formed in the side surface near the tip to allow the sucked solution to be discharged laterally. Stirrer. 4. The sample from the nozzle, wherein the vertical axis center position of the nozzle is the distance L from the center of the cylindrical or polygonal container to 0 <L ≦ r (the inner radius of the cylinder or the outer circumscribed radius of the polygon) −the nozzle radius. The stirring device for sample liquid or the like according to claim 1, wherein an angle α formed by the liquid discharge direction and a normal to the inner surface of the container is α ≠ 0 ° and α ≠ 180 °.