JP5807996B2 - Reaction tank - Google Patents

Description

  The present invention relates to a reaction vessel used for heating a sample solution in chemical measurement or the like.

For example, when measuring COD (chemical oxygen demand) which is one of the indicators of water pollution, it is disclosed in Patent Document 1 to oxidize an oxidizable substance such as an organic compound contained in a sample solution. In a reaction vessel, potassium permanganate (KMnO ₄ ) is added to the sample solution and heated.

  As shown in FIG. 6A, such a reaction vessel 100A includes a sample container 1A for storing a sample liquid whose upper surface is open, a heat transfer body into which the sample container 1A is inserted, and the heat transfer body 2A. A heating tank 2A composed of a heater 22A for applying heat to the lid, a lid 5A for covering the upper surface of the sample container 1A, and for fixing and supporting various measurement-related devices 4A inserted into the sample container 1A And a support 3A for fixing and supporting the heating tank 2A. Between the heating tank 2A and the lid 5A, when used for measurement or the like, it is fixed and integrated with a jig. For example, a deposit such as silver chloride accumulated in the sample container 1A. When maintenance is performed because it is necessary to remove dirt or the like, the jig may be removed and disassembled.

  At the time of this maintenance, since the heating tank 2A is fixedly supported by the support 3A, it is necessary to remove the sample container 1A by moving the lid 5A side as shown in FIG. Since the lid 5A is provided with measurement-related equipment 4A related to measurement, such as piping for introducing a sample solution, a reagent, and the like into the sample container 1A, and a measurement electrode, it is difficult to move. Even if the lid 5A can be moved, it is difficult to remove the sample container 1A while holding the lid 5A, so that the measurement-related equipment 4A protruding toward the sample container 1A is not damaged. Thus, it is necessary to place the lid 5A somewhere. However, in the case of an automatic COD measurement device or the like, in addition to the reaction vessel 100A, devices for transferring the reagent into the sample container 1A are placed in the same casing, and there may be no space for placing the lid 5A. .

  As described above, the operation of disassembling the reaction tank at the time of maintenance or the like, placing the separated parts somewhere, and taking out only the sample container may be unexpectedly difficult.

JP-A-5-322830

  The present invention has been made in view of the above-described problems. When performing maintenance or the like in a reaction vessel, the sample container in the reaction vessel can be easily taken out, and the place where each disassembled member is placed. It aims at providing the reaction tank which does not need to consider etc.

  That is, the reaction tank of the present invention includes a sample container for storing a sample solution whose upper surface is open, a heating tank into which the sample container is inserted, and a support that supports various measurement-related devices inserted into the sample container. The support body movably supports the heating tank, the heating tank has a measurement position where the measurement-related device is inserted into the sample container, and the measurement A related apparatus is provided so as to be moved from the inside of the sample container, and supported so as to be movable in the vertical direction between a removal position where the sample container can be removed from the heating tank. . Here, the measurement-related equipment refers to various equipment used for pipes for introducing various reagents, detectors such as electrodes, stirrers, etc., titration, etc. Point to.

  In such a case, since the heating tank in which the sample container is inserted is supported by the support body so as to be movable in the vertical direction, the disassembly position can be obtained without moving various measurement-related devices during decomposition. The sample container can be removed. In addition, since the measurement-related equipment is supported by the support, it does not need to be moved as in the conventional case, so that it is difficult to place it in the first place. Furthermore, since the heating tank is movably supported by the support body, only the sample container can be removed without separating the heating tank from the support body. I don't get it. Therefore, the sample container can be taken out from the reaction vessel very easily.

  In order to prevent the sample container or the heating tank from contacting the measurement-related equipment during removal or assembly, and to make it easy to attach or detach the sample container to the heating tank, the heating tank is moved from the measurement position to the measurement position. The measurement-related device is configured to be movable to the detaching position that is shifted in the horizontal direction with respect to the intermediate position via the intermediate position protruding from the sample container. I just need it. If it is such, after the said heating tank moves to the said intermediate point from the said measurement position, and a measurement related apparatus is removed from the inside of a sample container safely, it is horizontal from the said intermediate position to the said removal position. The heating tank can be moved to the user side, for example, and the sample container can be easily removed.

  In order to improve the heating efficiency by sealing the inside of the sample container at the measurement point, the support further fixes and supports a lid that covers the upper surface of the sample container when the heating tank is at the measurement position. Anything to do.

  In order to fix the heating tank at the measurement position and allow the heating tank to be brought into close contact with the lid body, the support body presses the heating tank from the bottom surface to the lid body. What is necessary is just to further support the fixing mechanism to fix.

  As a specific embodiment in which the heating tank is supported so as to be movable from the measurement position to the removal position, a pair of engagements in which the support body engages with a pair of protrusions protruding from the heating tank, respectively. A first linear portion formed in a straight line so as to allow vertical movement of the convex portion between the measurement position and the intermediate position. A second shape is formed so as to allow the movement of the convex portion between the intermediate position and the removal position, and is incident on the first straight portion from obliquely below. What is necessary is just to provide a linear part.

  As described above, the reaction tank of the present invention is supported so that the heating tank side can be moved to the support without moving the measurement-related equipment, so that it is easy to move the disassembled parts, and it is difficult to place it. Can be prevented from occurring. Therefore, the sample container in the reaction tank can be easily taken out.

In the reaction tank which concerns on one Embodiment of this invention, a typical perspective view in case a heating tank exists in a measurement position. The typical perspective view in case the heating tank exists in a removal position in the reaction tank in the embodiment. The typical longitudinal section of the heating tank in the embodiment. The surrounding enlarged view of the fixing mechanism in the embodiment. The side view of the support body in the embodiment. Typical sectional drawing explaining the conventional reaction tank.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The reaction tank 100 of this embodiment is used for, for example, oxidation of a sample solution or titration in COD measurement. As shown in the perspective view of FIG. 2, the deposit and dirt such as silver chloride generated by the COD measurement are maintained from the state in which the lid 5 and the heating tank 2 are combined as shown in the perspective view of FIG. The lid 5 and the heating tank 2 are separated from each other so that the internal sample container 1 can be taken out.

  That is, as shown in the perspective view of FIG. 1, the reaction vessel 100 of the present embodiment is a pair of a substantially square top plate 31 and a pair of base plates that are bent at right angles from two opposite sides of the top plate 31 and extend downward. A substantially cylindrical heating tank 2 and a lid 5 are supported in a support 3 having a side plate 32 of the same shape. Then, various pipes 43 for introducing and discharging sample liquids, reagent liquids, etc., a twin platinum electrode 41 for detecting an end point in titration, and a measurement related device 4 such as a stirrer 42 for stirring the sample liquid. It is configured to be inserted into the sample container 1 inserted into the heating tank 2 from above via the top plate 31 and the lid 5.

  As shown in FIGS. 1 and 2, the support 3 supports and fixes the various measurement-related devices 4, and is formed by bending a thin plate to form the top plate 31 and the pair of side plates 32. Is formed. Here, to support and fix the measurement-related device 4 is to contact and support the top plate 31 and to indirectly support the measurement-related device 4 via, for example, the lid 5 supported by the support 3. It is a concept that includes doing.

  The top plate 31 is used, for example, to place a motor for rotating the stirrer 42 or other lightweight object on the top, and has a hole or the like for inserting the measurement related device 4. is there.

  The pair of side plates 32 are generally U-shaped thin plates, and the lid 5 is fixedly supported at the center by screws, while the heating tank 2 is movably supported. More specifically, the pair of side plates 32 supports the heating tank 2 so as to be sandwiched from both sides, and the measurement-related device 4 as shown in the perspective view of FIG. The measurement position where the bottom surface of the lid 5 and the top surface of the sample container 1 are close to or in contact with each other and the measurement-related device 4 as shown in FIG. In addition, the heating tank 2 is supported so as to be movable while being combined with the sample container 1 between a position where the sample container 1 can be removed from the heating tank 2.

  In the assembled state as shown in the perspective view of FIG. 1, the support 3 presses and fixes the heating tank 2 to the lid 5, the heating tank 2, and the lid 5 in order from the top between the side plates 32. The holding mechanism 6 is sandwiched and held.

  The lid 5 and the heating tank 2 will be described based on the state shown in FIG. 1. A rubber packing G provided between the sample container 1 and the lid 5 is pushed as shown in the sectional view of FIG. The sample container 1 is crushed and sealed. As shown in the cross-sectional view of FIG. 3, the lid 5 has a substantially flat cylindrical shape, the sample container 1 is a glass container having a cone-like bottom surface, and the heating tank 2 is also formed of the sample container 1. It is provided with a storage unit that matches the shape. The heating tank 2 has a cone-shaped accommodation portion into which the sample container 1 is inserted on the top surface, a heat transfer body 21 having a recess 24 with a member cut off on the bottom surface side, and the heat transfer body 21 side. And a sheet-like heater 22 provided to cover the peripheral surface. In FIG. 3, various pipes inserted into the sample container are omitted for easy understanding. In addition, as shown in FIGS. 1 and 2, the heat transfer body 21 has a notch formed in the side peripheral surface on the front side, and the state inside the sample container 1 accommodated in the heating tank 2 is shown. An observation window 23 for observation is formed.

  The fixing mechanism 6 will be described. As shown in the perspective views of FIGS. 1 and 2 and the enlarged view of the periphery of the fixing mechanism 6 in FIG. 4, the fixing mechanism 6 includes a flat portion 25 formed on the bottom surface of the heating tank 2. By pressing upward, the rubber packing G between the heating tank 2 and the lid 5 is crushed and sealed. More specifically, the fixing mechanism 6 is screwed into a center portion with a push screw 61 for pressing the upper end with the bottom surface of the heating tank 2 in contact with the bottom, A bridge member 62 having a substantially cylindrical shape that extends in the horizontal direction and is supported between the pair of side plates 32, and is formed on the distal end side of the pair of side plates 32, and each end of the bridge member 62 is movable. And it is comprised from the fixing hole part 63 inserted so that fixation is possible.

  The push screw 61 has a flat tip at its distal end, and a grip portion having a diameter larger than that of the distal end is formed on the proximal end side for manual rotation. And the screw is cut between the holding part and the front end.

  The material of the bridge portion 62 has a screw hole formed so as to penetrate the cylindrical side peripheral surface at the center portion, and a notch groove for catching on the side plate 32 in the fixed hole portion 63 at both ends thereof. 621 is formed. As shown in FIG. 4B, the notch groove is cut out in a substantially rectangular shape when viewed from the side surface of the cylinder and in a substantially half-moon shape when viewed from the long axis direction side. The notch groove is such that the remaining portion chord length dimension L1 is larger than the length dimension L2 of the remaining member in the radial direction.

  The fixing hole 63 has substantially square ends at the upper and lower ends, and the ends are connected by a rectangular portion. The width L3 of the rectangular hole is smaller than the chord length L1 of the remaining portion and larger than the radial length L2 of the remaining portion.

  With the fixing mechanism 6 formed in this manner, the notch of the bridge portion 62 faces downward at the time of fixing so that the upper end portion of the fixing hole portion 63 is caught, and then the set screw 61 is tightened. Thus, the heating tank 2 can be pressed against the lid 5. Further, when the heating tank 2 is separated from the lid body 5, the notch of the bridge portion 62 is turned so as to face in the front-rear direction, passes through the rectangular portion, and is formed at the lower end portion of the fixing hole portion 63. The bridge portion 62 can be moved so as not to interfere when the heating tank 2 is moved.

  Further, the heating tank 2 is movably supported by a guide mechanism 7 formed between the heating tank 2 and the pair of side plates 32.

  Specifically, the guide mechanism 7 includes a convex portion 71 that protrudes from both sides of the heating tank 2 to both sides, and an engagement hole 7 that is formed in the side plate 32 and engages with the convex portion 71. It is equipped with. The engagement hole 7 will be described below. As shown in the side view of FIG. 5, the engagement hole 7 is a hole formed in a generally square shape toward the center of the side plate 32 in a side view, and extends in the vertical direction on the side plate 32. The first linear portion 721 and the second linear portion 722 that is incident on the first linear portion 721 obliquely from below are configured. The position of the upper end of the first linear portion 721 is determined so that when the convex portion 71 of the heating tank 2 is at that position, the heating tank 2 is disposed at the measurement position and matches the lid 5. . If the convex part 71 of the said heating tank 2 exists in the lower end of the said 2nd linear part 722, the said heating tank 2 will be arrange | positioned in a removal position. In addition, when the convex portion 71 is present at the confluence of the first linear portion 721 and the second linear portion 722, the measurement-related device 4 is at least detached from the sample container 1. The position of the confluence is determined.

  According to the reaction tank 100 of the present embodiment configured as described above, the heating tank 2 is placed between the measurement position and the removal position by the guide mechanism 7 provided between the support 3 and the heating tank 2. Can be supported in a movable state. That is, the heating tank 2 can be moved in the vertical direction together with the sample container 1 while the lid 5 and the measurement related device 4 are fixed to the support 3. Therefore, the sample container 1 can be easily removed without causing the problem that the measurement-related device 4 is not easily moved when being disassembled by being distorted, or there is no place to place the lid 5 with the measurement-related device 4 attached. It can be taken out.

  Furthermore, since the heating tank 2 is first lowered from the measurement position to the intermediate position immediately below, and then moved to the removal position on the user side in the front-rear direction, the measurement-related equipment 4 is moved from within the sample container 1. The heating tank 2 can be moved in the horizontal direction in a detached state. Therefore, when the heating tank 2 is moved, it can be prevented from being damaged by being caught by the measurement related device 4. Moreover, since it is also moved in the horizontal direction, there is no member on the upper side of the heating tank 2 at the removal position, so that the sample container 1 can be easily extracted from the heating tank 2.

  Other embodiments will be described.

  In the embodiment, the convex portion is provided on the heating tank side and the engagement hole is provided on the support side as the guide mechanism, but this relationship may be reversed. Moreover, you may comprise the said guide mechanism so that the said heating tank may not move to a horizontal direction, but to move only to an up-down direction. In addition, although the support is a thin plate, the lid and the heating tank may be supported by a block, for example. In this case, the engagement hole may be formed by a bottomed hole instead of the through hole. Moreover, you may form the said engaging groove part so that the said heating tank may move only to a horizontal direction from the said intermediate position to the said removal position. Further, the engaging groove portion need not be formed only by a straight line, and may be formed, for example, as a curved portion bent into a square shape instead of the second straight portion. Other shapes may be sufficient as the shape of the sample container and heating tank in the said embodiment, for example, the thing of a round bottom may be sufficient. In short, it is sufficient if the heating tank moves in the vertical direction between the measurement position and the removal position.

  In addition, various modifications and combinations of embodiments may be performed without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 100 ... Reaction tank 1 ... Sample container 2 ... Heating tank 3 ... Support body 4 ... Measurement related apparatus 71 ... Convex part 72 ... Engagement groove part

Claims (6)

A reaction vessel comprising a sample container for storing a sample solution with an open top surface, a heating tank into which the sample container is inserted, and a support for supporting various measurement-related devices inserted into the sample container,
The support body movably supports the heating tank,
The heating tank has a measurement position where the measurement-related equipment is inserted into the sample container, a position where the measurement-related equipment is taken out from the sample container, and a position where the sample container can be removed from the heating tank. It is supported so that it can move up and down between the removal position and
The heating tank is configured to be vertically movable between the measurement position and the measurement position and an intermediate position where the measurement-related equipment comes out of the sample container. A reaction tank configured to be movable in an oblique direction between an intermediate position and the removal position.   The heating tank is directly below the measurement position from the measurement position, and the measurement-related equipment is shifted in the horizontal direction with respect to the intermediate position via an intermediate position where the measurement-related equipment comes out of the sample container. The reaction tank according to claim 1, wherein the reaction tank is configured to be movable to a removal position.   The reaction vessel according to claim 1 or 2, wherein the support further fixes and supports a lid that covers an upper surface of the sample container when the heating vessel is at the measurement position.   The reaction tank according to claim 3, wherein the support further supports a fixing mechanism that presses the heating tank from the bottom surface and fixes the heating tank to the lid.   The support has a pair of engagement holes that respectively engage with a pair of protrusions protruding from the heating tank, and the engagement holes are formed between the measurement position and the intermediate position. A first linear portion that is linearly formed to allow vertical movement of the portion, and a linear shape that allows movement of the convex portion between the intermediate position and the removal position. The reaction vessel according to claim 2, 3 or 4, further comprising a second linear portion formed so as to be incident obliquely from below to the first linear portion. A reaction vessel comprising a sample container for storing a sample solution with an open top surface, a heating tank into which the sample container is inserted, and a support for supporting various measurement-related devices inserted into the sample container,
The support body movably supports the heating tank by a guide mechanism formed between the support body and the heating tank,
The heating tank has a measurement position where the measurement-related equipment is inserted into the sample container, a position where the measurement-related equipment is taken out from the sample container, and a position where the sample container can be removed from the heating tank. It is supported so that it can move up and down between the removal position and
The heating tank is located immediately below the measurement position and the measurement position so that the guide mechanism does not interfere with the measurement-related equipment from the measurement position, and the measurement-related equipment is out of the sample container. Between the intermediate position and the removal position, and can be moved by its own weight to the removal position below in an oblique direction between the intermediate position and the removal position. Reaction tank.