JPH03285170A - Automatic analyzer - Google Patents

Abstract

PURPOSE:To achieve the structural simplification and cost reduction of a large- scale machine by mounting a plurality of mechanism bases each having one reaction tank, a stirring member, a reagent nozzle moving means and a sampling means arranged thereon on one stand and horizontally projecting the reaction tanks by the up-and-down movement of the bases. CONSTITUTION:Two mechanism bases 2 having reaction tanks 7, turntables 6 and mechanism units mounted thereon are mounted on a stand 1 through base supports 3 equipped with vertical adjustment mechanisms. Since horizontal projection mechanisms are independent at every mechanism bases 2, even when the flatness of the stand 1 is bad to a certain degree, the bases 2 can sufficiently take a horizontal posture. Further, in order to keep the relative height of a separately arranged sample received test tube and the mechanism bases 2 constant, a place not changing a vertical position is provided at one point in the vicinity of a sampling mechanism. By this constitution, the structural simplification and cost reduction of a large-scale machine can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic analyzer having a plurality of reaction vessels mounted on the same pedestal, and a mechanism and method for comparing the horizontal levels of the plurality of reaction membranes.

[Conventional technology]

Conventional large-scale equipment is constructed by combining multiple analysis units, each of which has one reaction tank mounted on one stand, depending on the processing capacity required. In this case, since one pedestal has one reaction tank, the pedestal only needs to be large enough to accommodate one reaction tank, so good flatness can be expected. Also, since there was one reaction tank for each mount, there was no particular problem in leveling the reactor.

[Problem to be solved by the invention]

As mentioned above, the above conventional technology has a structure in which one reaction tank is mounted on one pedestal, so a leveling mechanism for each reaction tank is not required. Since a total of the same number of frames are required as the total number of frames, the structure becomes complicated and the manufacturing price increases. Also, the reason behind the idea of organizing the equipment as an assembly of frames each carrying one reaction tank called an analysis unit is that, first of all, in a large automatic analyzer, even if one analysis unit breaks down, the other units will not work. The part is covered so that it does not interfere with measurement, and the failed unit can be easily replaced. Second, it is possible to easily design a series using common parts. However, in today's advanced reliability design, it is extremely rare for an analysis unit to actually be replaced due to failure, and even though it is a series design,
Nowadays, where there are high-end and low-end models in the lineup, there is no need to create a series over a wide range, and it is sufficient to create a series only for the large, high-end models. In this way, if only large models are to be made into a series, it becomes necessary to mount multiple reaction vessels on one mount. The present invention provides a mechanism and method for leveling each reaction tank when a plurality of reactors (two in the example) are mounted on one large pedestal (width: approximately 2 m x depth: approximately 0.75 m).

[Means to solve the problem]

In order to achieve the above objective, the first step is to mount multiple reaction vessels on one pedestal, which increases the size of the pedestal and may deteriorate the flatness of the surface on which the reaction vessels are mounted. Another advantage is that the adjustment mechanism for leveling each reaction tank is provided separately from the adjustment mechanism for leveling the entire pedestal.

Second, there are two ways to actually level the reaction tank: by raising and lowering the reaction tank itself, or by raising and lowering the mechanism base on which it rests, but other sampling mechanisms and stirring mechanisms can also be used. It rests on the mechanism base, and in order to avoid changing its vertical position with these, the entire mechanism base on which the reaction tank is mounted can be moved up and down.

Thirdly, the method of actually moving the mechanism base up and down is to weld a threaded boss to the pedestal, screw the bolt and cap nut into the boss, and the mechanism base that is in contact with the bolt and cap nut will move up and down. This method employs a method of engaging and moving up and down.

[Effect]

The leveling mechanism provided for each reaction tank is a system that levels each reaction tank (mechanism table) independently, so even if the flatness of the mounted pedestal is poor to some extent, it will ensure that it is sufficiently level. I can do it. Also, the leveling mechanism for the entire frame is 1
Used to level the entire device during assembly and installation. In addition, raising and lowering the entire mechanism base is necessary to move the reaction tank on the base and the sampling mechanism.
Although the relative positions of mechanical units such as the stirring mechanism do not change, the height positional relationship between the sampling nozzle and the test tube containing the sample, which is placed separately from the mechanism base, may change. This becomes a problem as a dead volume.

In order to avoid this, in this method, one point is provided near the sampling mechanism as a reference point where the vertical position does not change. Thereby, the height relationship between the sampling tip and the sampler on which the test tube is placed can be maintained at a constant height. As the fulcrum for actually raising and lowering the mechanism base, the above-mentioned point is used as the reference point, and the other two points are used as the adjustment points for raising and lowering the mechanism.The leveling is determined by a total of three points, so that the leveling can be easily achieved. The other several support points should be aligned with the horizontal plane of the mechanism base. In addition, in this adjustment work, in order to remove any problems with the flatness of the mechanism base itself, use a thicker and more flat one than the actual mechanism base, and use the adjustment bolts on which the mechanism base rests.
The base holder defines the height of the nut.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 6. FIG. 1 shows an overall view of this embodiment, showing the reaction tank 7. A mechanism base 2 on which a turntable 6 and mechanical units are mounted is mounted on a pedestal 1 via a base support 3 having a two-unit vertical adjustment mechanism. Figure 2 is the first
A plan view of the figure (in this case, only the adjustment mechanism base 20 is
riding on. ). The test tube 21 is inserted into the rack 19, moves on the sampler 18, and a sample is taken at the position of the sampling mechanism 5.

A and B displayed inside the adjustment mechanism base 20.

The letters C and D represent the structure of the base support 3, respectively.
This corresponds to the symbols in FIGS. 3, 4, S, and 6. Point A is a reference point near the sampling mechanism 5, and the vertical position is adjusted using this point as a fulcrum. Point B and point 0 are adjustment points for leveling the mechanism base 2.

Boss B is welded to frame 1, and bolt B13 is screwed into this. It moves up and down as the bolt C14 rotates. Nut 12 functions to prevent bolts B and C from loosening. At points A and 0, the tips of the boss AIO and the bolt C14 fit into the holes in the mechanism base 2, thereby positioning the mechanism base 2 in the front, rear, left and right directions. remaining D
The structure shown in FIG. 6 is such that the boss C15 is welded to the pedestal 1, and the base holder, which is a female thread, is screwed into the base holder with a nut 16 interposed by a push spring 17.

The base holder has a slit groove cut into the nut 16 so that the height can be adjusted with a screwdriver when the mechanism base 2 is placed on it. After adjustment, the push spring 17 serves to prevent the base holder from loosening and changing the position of the nut 16 until the mechanism base 2 is placed on it.

〔Effect of the invention〕

The present invention is constructed as described in one or more ways and provides the advantages described below.

Mounting multiple reaction vessels on a single mount is absolutely necessary when constructing a large automatic analyzer to make the device more convenient and to keep costs down. The present invention has made it possible to meet these demands by providing a vertical adjustment mechanism in each reaction tank. This invention is not limited to simply inventing a mechanism for leveling a reaction tank, but also has effects including simplifying the structure of large machines and reducing costs.

[Brief explanation of the drawing]

FIGS. 1 and 2 are overall and plan views of an embodiment of the present invention, and FIGS. 3 to 6 are base support points A and B in FIG.
FIG. 3 is a longitudinal cross-sectional view of the structure at points C and D.

Claims (1)

[Claims] 1. A reaction tank and a plurality of mechanism bases on which mechanical units such as a stirring mechanism, a reagent nozzle moving mechanism, and a sampling mechanism are installed are mounted on the same pedestal. Automatic analyzer. 2. The automatic analyzer according to claim 1, characterized in that the reaction tank is leveled by raising and lowering the entire mechanism base. 3. The automatic leveling according to claim 2, characterized in that the reference point for leveling is provided at one location near the sampling nozzle, and the other mechanism base support parts are raised and lowered by a screw structure. Analysis equipment.