阅读说明：本技术 流体处理装置及模具 (Fluid processing device and mold ) 是由 野口幸二 于 2019-02-19 设计创作，主要内容包括：流体处理装置(100)具有外壳(110)和收纳部(120)。收纳部(120)包括形成为大致圆筒状侧壁、多个腔室及多个连通孔。外壳(110)的内周面(131)包括：多个分割内周面(132),其包围旋转轴(RA),分别以随着靠近外壳(110)的底部而接近旋转轴(RA)的方式倾斜；以及台阶面(133),配置在相邻的两个分割内周面之间。收纳部(120)的外周面的至少一部分与外壳的多个分割内周面(132)接触。(A fluid treatment device (100) is provided with a housing (110) and a housing (120). The housing (120) includes a substantially cylindrical side wall, a plurality of chambers, and a plurality of communication holes. The inner peripheral surface (131) of the housing (110) includes: a plurality of divided inner circumferential surfaces (132) that surround the rotating shaft (RA) and are each inclined so as to approach the rotating shaft (RA) as they approach the bottom of the housing (110); and a step surface (133) disposed between the two adjacent divided inner peripheral surfaces. At least a part of the outer peripheral surface of the housing section (120) is in contact with the plurality of divided inner peripheral surfaces (132) of the housing.)

1. A fluid treatment device, comprising:

a bottomed case; and

a housing portion having an outer peripheral surface in contact with an inner peripheral surface of the housing and rotatably housed around a rotation axis,

the housing portion includes:

a side wall formed in a substantially cylindrical shape;

a plurality of chambers formed inside the sidewall; and

a plurality of communication holes communicating an outer side of the side wall with one of the plurality of chambers,

the inner peripheral surface of the housing includes:

a plurality of divided inner circumferential surfaces surrounding the rotating shaft and inclined so as to approach the rotating shaft as approaching the bottom of the housing; and

a step surface disposed between two adjacent divided inner peripheral surfaces,

at least a part of the outer peripheral surface of the housing portion is in contact with one of the plurality of divided inner peripheral surfaces of the housing.

2. The fluid treatment device of claim 1,

the inner peripheral surface of the housing further includes an outer spacer surface between the stepped surface and the divided inner peripheral surface adjacent to the stepped surface on the bottom side of the housing, the outer spacer surface being spaced apart from the outer peripheral surface of the housing.

3. The fluid treatment device of claim 2,

in a cross section including the rotation axis, the outer spacer surface is parallel to the rotation axis.

4. The fluid treatment device according to any one of claims 1 to 3,

in the adjacent two divided inner peripheral surfaces, an inclination angle of the divided inner peripheral surface on the bottom portion side of the housing with respect to the rotation shaft is larger than an inclination angle of the divided inner peripheral surface on the opening portion side of the housing with respect to the rotation shaft.

5. The fluid treatment device according to any one of claims 1 to 4,

the outer peripheral surface of the housing portion has:

a plurality of divided outer circumferential surfaces surrounding the rotating shaft, each of the divided outer circumferential surfaces being inclined so as to approach the rotating shaft as the divided outer circumferential surfaces approach a bottom portion of the housing, and each of the divided outer circumferential surfaces being in contact with the plurality of divided inner circumferential surfaces; and

an inner spacing surface located between two adjacent divided outer circumferential surfaces and spaced apart from the inner circumferential surface of the housing,

the communication hole is opened in at least one of the divided outer circumferential surfaces.

6. The fluid treatment device of claim 5,

in each of the plurality of divided inner peripheral surfaces,

the end of the divided inner circumferential surface on the opening side of the case is arranged closer to the opening side than the end of the divided outer circumferential surface on the opening side that is in contact with the divided inner circumferential surface,

the divided inner circumferential surfaces are arranged such that bottom-side ends of the outer cases are located closer to the bottom side than the bottom-side ends of the divided outer circumferential surfaces that are in contact with the divided inner circumferential surfaces.

7. A mold for molding the housing of the fluid handling device of claim 1,

a plurality of split inserts each having a first die surface for molding the divided inner peripheral surface,

the plurality of split inserts are stacked in a direction corresponding to the rotation axis,

at least one of the split inserts has a second die surface for molding the step surface,

the split insert having the second die surface and the split insert adjacent thereto have a split plane located on the same plane as the second die surface.

Technical Field

The present invention relates to a fluid processing apparatus and a mold.

Background

In general, biological substances such as blood, proteins, and DNA are analyzed through steps such as mixing with a reagent, heating, cooling, and detection. In recent years, a facility for continuously performing such a plurality of steps is known (for example, see patent document 1).

Patent document 1 describes a multichamber rotary valve (fluid treatment device) including: an insert (receiving portion); and a box body (housing) for accommodating the insert in a manner that the insert can rotate. The insert has a plurality of chambers formed therein. A plurality of through holes formed corresponding to the respective chambers are formed in the side walls of the insert. An insertion opening into which a syringe can be inserted is formed in the side wall of the case body at a height corresponding to the through hole. Each chamber is filled with a liquid such as a reagent or a subject necessary for analysis.

In the multi-chamber rotary valve described in patent document 1, for example, a syringe is inserted into a first through hole corresponding to a first chamber from an insertion port, and a subject filled in the first chamber is sucked into the syringe. Then, the insert is rotated in the circumferential direction so that the second through hole corresponding to the second chamber is aligned with the insertion port, and the reagent filled in the second chamber is sucked into the syringe. Thereby, the subject and the reagent are mixed in the syringe. When the mixed solution of the sample and the reagent is to be heated, the mixed solution in the syringe is discharged into the third chamber for heating, and the multi-chamber rotary valve is heated by a heating device or the like to heat the mixed solution.

Disclosure of Invention

Problems to be solved by the invention

The rotary valve of the multi-chamber type described in patent document 1 needs to be replaced every time analysis is performed, and therefore, it is sometimes manufactured at low cost by injection molding using a resin material. In such a rotary valve of the multi-chamber type, it is necessary to manufacture the insert so that the outer peripheral surface of the insert is in close contact with the inner peripheral surface of the case main body with high accuracy, from the viewpoint of preventing leakage during operation. In this case, it is conceivable to correct the shapes of the outer peripheral surface of the insert and the inner peripheral surface of the case body by adjusting the corresponding surfaces of the mold corresponding to the outer peripheral surface of the insert and the inner peripheral surface of the case body.

However, in the rotary valve of the multi-chamber type described in patent document 1, since the inner peripheral surface of the case main body is a single curved surface, it is difficult to accurately determine the position and shape of a portion whose shape is to be corrected, and thus it is also difficult to adjust the corresponding surface in the mold. Therefore, for example, in order to correct the shape of a part of the inner peripheral surface of the cartridge body, it is sometimes necessary to adjust not only the corresponding surface corresponding to the part but also other surfaces around the part that do not need to be adjusted. Even when only a part of the inner peripheral surface of the case main body is corrected, the entire corresponding surface may need to be corrected.

The purpose of the present invention is to provide a fluid treatment device capable of easily and accurately correcting the shape of the inner peripheral surface of a housing. Another object of the present invention is to provide a mold for molding a housing of the fluid treatment apparatus.

Means for solving the problems

The fluid treatment device of the present invention comprises: a bottomed case; and a housing portion that has an outer peripheral surface in contact with an inner peripheral surface of the housing and is rotatably housed around a rotation axis, the housing portion including: a side wall formed in a substantially cylindrical shape; a plurality of chambers formed inside the sidewall; and a plurality of communication holes that communicate an outer side of the side wall with one of the plurality of chambers, the inner circumferential surface of the housing including: a plurality of divided inner circumferential surfaces surrounding the rotating shaft and inclined so as to approach the rotating shaft as approaching the bottom of the housing; and a step surface disposed between two adjacent divided inner circumferential surfaces, at least a part of the outer circumferential surface of the housing portion being in contact with one of the plurality of divided inner circumferential surfaces of the housing.

The die of the present invention is a die for molding the housing of the fluid processing apparatus of the present invention, and the die includes a plurality of split inserts, each of the plurality of split inserts having a first die surface for molding the divided inner peripheral surface, the plurality of split inserts being stacked in a direction corresponding to the rotation axis, at least one of the plurality of split inserts having a second die surface for molding the step surface, and a divided surface between the split insert having the second die surface and the split insert adjacent to the split insert being located on the same plane as the second die surface.

Effects of the invention

The invention provides a fluid processing device capable of easily and accurately correcting the shape of the inner peripheral surface of a housing.

Drawings

Fig. 1A to 1D are diagrams showing the configuration of a fluid treatment apparatus according to embodiment 1.

Fig. 2A to 2D are diagrams showing the structure of the housing.

Fig. 3A and 3B are another diagrams showing the structure of the housing.

Fig. 4A to 4C are diagrams showing the structure of the housing section.

Fig. 5A and 5B are diagrams showing the structure of a housing in a fluid treatment apparatus according to embodiment 2.

Fig. 6A to 6D are diagrams showing the structure of a housing in a fluid treatment apparatus according to embodiment 3.

Fig. 7A to 7D are views showing the configuration of a housing unit in a fluid treatment apparatus according to embodiment 3.

Fig. 8A and 8B are views showing the structure of a mold for molding a housing.

Fig. 9A and 9B are views showing the configuration of a fluid treatment apparatus according to embodiment 4.

Detailed Description

Next, the fluid treatment apparatus according to the present embodiment will be described with reference to the drawings.

[ embodiment 1]

(construction of fluid treatment apparatus)

Fig. 1A to 1D are diagrams showing the configuration of the fluid treatment apparatus 100. Fig. 1A is a plan view of the fluid processing device 100, fig. 1B is a right side view, fig. 1C is a sectional view taken along line a-a shown in fig. 1A, and fig. 1D is a sectional view taken along line B-B shown in fig. 1A. Fig. 1C and 1D show the housing unit 120 as viewed from the side, not as a cross section.

As shown in fig. 1A to 1D, the fluid treatment apparatus 100 includes a bottomed casing 110 and a housing 120. The fluid processing device 100 is used with the housing 120 housed in the casing 110. At this time, at least a part of the outer peripheral surface 126 of the housing portion 120 contacts a part of the inner peripheral surface 131 (one of a plurality of divided inner peripheral surfaces 132 described later) of the housing 110. The fluid processing apparatus 100 is used for analyzing a substance to be detected in a sample by intermittently rotating the housing unit 120 and the housing 110 while slidably contacting the housing and operating a fluid containing liquid or gas, such as a reagent or a sample, using a syringe.

The housing 110 and the housing 120 are formed as separate bodies, and assembled to form the fluid treatment apparatus 100. The manufacturing method of the housing 110 and the receiving portion 120 is not particularly limited. From the viewpoint of manufacturing cost, it is preferable that both the housing 110 and the housing 120 are manufactured by injection molding using a resin material. The material of the housing 110 and the housing 120 is not particularly limited as long as it has reagent resistance suitable for analysis and does not deform at the temperature during analysis. Examples of the material of the housing 110 and the receiving portion 120 include: polypropylene (PP), thermoplastic polyurethane elastomer (TPU), Polycarbonate (PC).

Fig. 2A to 2D, and fig. 3A and 3B are diagrams showing the structure of the housing 110. Fig. 2A is a plan view of the housing 110, fig. 2B is a right side view, fig. 2C is a sectional view taken along line B-B shown in fig. 2B, and fig. 2D is a sectional view taken along line C-C shown in fig. 2B. Fig. 3A is a cross-sectional view taken along line a-a shown in fig. 2A, and fig. 3B is an enlarged partial cross-sectional view of region a shown in fig. 3A. The one-dot chain line in fig. 3B indicates a virtual straight line parallel to the rotation axis RA.

As described above, the housing 110 houses the housing 120 so that the housing 120 can rotate about the rotation axis RA. As shown in fig. 2A to 2D and fig. 3A and 3B, the housing 110 includes a base 111, a housing main body 112, an insertion portion 113, and an outside communication hole 114.

The base 111 supports the housing main body 112 and functions as a mounting portion for external equipment such as a heating and cooling device. A housing main body 112 is fixed to an upper portion of the base 111. Holes 115 opened at the front and rear surfaces of the base 111, respectively, are formed at the central portion of the base 111.

The housing main body 112 houses the housing 120 so that the housing 120 can rotate around the rotation axis. The housing main body 112 is formed in a cylindrical shape. An insertion portion 113 for inserting a syringe and an outer communication hole 114 communicating with a second communication hole 142 (described later) of the housing portion 120 are disposed in the housing main body 112.

The inner peripheral surface 131 of the housing main body 112 has a plurality of divided inner peripheral surfaces 132 and a stepped surface 133. The inner peripheral surface 131 of the housing main body 112 is slightly inclined toward the central portion of the bottom of the housing 110 as a whole.

The plurality of divided inner circumferential surfaces 132 are formed so as to surround the rotation axis RA. In a state where the housing 120 is assembled in the housing 110, each of the plurality of divided inner peripheral surfaces 132 contacts the corresponding divided outer peripheral surface 127 of the housing 120.

The plurality of divided inner circumferential surfaces 132 are inclined so as to approach the rotation axis RA as they approach the bottom portion (base 111 side) of the housing 110. The inclination angle θ 1 of the divided inner circumferential surface 132 with respect to the rotation axis RA is not particularly limited. From the viewpoint of easier assembly of the housing 110 and the housing 120 and from the viewpoint of less possibility of lubricant extrusion when a lubricant (e.g., grease) is applied between the housing 110 and the housing 120, the angle θ 1 of inclination of the divided inner circumferential surface 132 with respect to the rotation axis RA is preferably about 1 to 3 °. In the present embodiment, the inclination angle θ 1 of the divided inner peripheral surface 132 with respect to the rotation axis RA is 2 °.

From the viewpoints of ease of measurement, robustness against errors, machining accuracy, ease of machining, and the like, the shape of the divided inner circumferential surface 132 in the cross section including the rotation axis RA is preferably linear. That is, the shape of the divided inner circumferential surface 132 is preferably a shape of a side surface of an inverted truncated cone.

The number of the divided inner circumferential surface 132 is not particularly limited as long as it is plural. The number of the divided inner circumferential surfaces 132 may be two or more. In the present embodiment, the number of the divided inner peripheral surfaces 132 is three.

The length (height) of the divided inner peripheral surface 132 in the direction along the rotation axis RA is preferably equal to or greater than the length (height) of the divided outer peripheral surface 127 in the direction along the rotation axis RA. In the present embodiment, the length of the divided inner peripheral surface 132 located at the upper stage (in fig. 2D, the upper side of the paper surface is set to be the same as the length of the corresponding divided outer peripheral surface 127), and the length of the divided inner peripheral surface 132 in the direction along the rotation axis RA is longer than the length of the divided outer peripheral surface 127 in the direction along the rotation axis RA.

The stepped surface 133 is disposed between the adjacent two divided inner circumferential surfaces 132 so as to surround the rotation axis RA. In a state where the housing 120 is assembled into the housing 110, the stepped surface 133 may be in contact with or spaced apart from the housing 120. In the present embodiment, the stepped surface 133 is in contact with the housing 120.

The inclination angle θ 2 of the stepped surface 133 with respect to the rotation axis RA (the angle θ 2 formed by the stepped surface 133 and the rotation axis RA) in the cross section including the rotation axis RA is not particularly limited as long as it is larger than the inclination angle θ 1 of the adjacent two divided inner circumferential surfaces 132, and is preferably an angle at which a sharp ridge is formed between the stepped surface 133 and the adjacent two divided inner circumferential surfaces 132. In the present embodiment, in a cross section including the rotation axis RA, the inclination angle θ 2 of the stepped surface 133 with respect to the rotation axis RA is 90 °. The ridge between the stepped surface 133 and the divided inner peripheral surface 132 can be used as a reference position for fine adjustment of a mold used for injection molding, which will be described later.

The length of the step surface 133 in the direction along the rotation axis RA may be set according to the length of the divided inner circumferential surface 132 in the direction along the rotation axis RA.

The number of the stepped surfaces 133 is one or two or more, and may be set according to the number of the divided inner circumferential surfaces 132. When the number of the divided inner peripheral surfaces 132 is two, the number of the stepped surfaces 133 is one, and when the number of the divided inner peripheral surfaces 132 is three, the number of the stepped surfaces 133 is two. In the present embodiment, since the number of the divided inner peripheral surfaces 132 is three, the number of the step surfaces 133 is two. The number of the step surfaces 133 is preferably one less than the number of the divided inner peripheral surfaces 132. That is, preferably, one step surface 133 is disposed between each of the plurality of divided inner circumferential surfaces 132.

The insertion portion 113 is formed in a cylindrical shape. Preferably, the shape of the inner surface of the insertion portion 113 is a shape substantially complementary to the syringe. The insertion portion 113 is configured to allow the tip of the syringe to be inserted into the inner opening of the insertion portion 113. The shape of the outer opening of the insertion portion 113 is complementary to the outer shape of the syringe. The insertion portion 113 is formed at a position corresponding to a first communication hole 141 (described later) formed in the housing portion 120.

An outside communication hole 114 is formed in the housing main body 112. The outer communication hole 114 is formed at a position corresponding to at least a part of a second communication hole 142 (described later) formed in the housing 120. The number of the outside communication holes 114 is not particularly limited. In the present embodiment, the housing 110 includes: one outer communication hole 114 formed at a height corresponding to the plurality of second communication holes 142 formed on the divided outer peripheral surface 127 located at the upper stage; and one outer communication hole 114 formed at a height corresponding to the plurality of second communication holes 142 formed on the divided outer peripheral surface 127 located at the middle stage. The two outer communication holes 114 are arranged in a direction along the rotation axis RA.

Fig. 4A to 4C are diagrams illustrating the structure of the housing unit 120. Fig. 4A is a plan view of the housing 120, fig. 4B is a front view, and fig. 4C is a right side view.

The housing 120 is slidably in contact with the housing 110 and is rotatably housed around a rotation axis RA. The housing 120 has a substantially cylindrical shape with a closed bottom. The outer shape of the housing portion 120 is circular in a direction perpendicular to the rotation axis RA.

The housing section 120 includes: a substantially cylindrical side wall 121, a plurality of chambers 122 formed inside the side wall 121, and a plurality of communication holes 123 that communicate the outside of the side wall 121 with one of the plurality of chambers 122. The side wall 121 defines the outer shape of the housing 120. In addition, in the housing portion 120, a plurality of chambers 122 are defined by an inner wall 124, and a cylindrical inner hole 125 is defined by the inner wall 124.

The outer peripheral surface 126 of the side wall 121 has a plurality of divided outer peripheral surfaces 127 and a plurality of inner partition surfaces 128.

Each of the plurality of divided outer circumferential surfaces 127 is formed so as to surround the rotation axis RA. In a state where the housing section 120 is assembled in the housing 110, the plurality of divided outer circumferential surfaces 127 are in contact with the divided inner circumferential surface 132 of the housing 110, respectively. The length of the divided outer circumferential surface 127 in the direction along the rotation axis RA is not particularly limited as long as the communication hole 123 can be opened in the region in contact with the divided inner circumferential surface 132. In addition, the lengths of the plurality of divided outer circumferential surfaces 127 in the direction along the rotation axis RA may be the same or different, respectively. In the present embodiment, the length of the divided inner peripheral surface 132 located at the upper stage (in fig. 4B and 4C, the upper side of the paper surface is set to be the same as the length of the corresponding divided outer peripheral surface 127), and the length of the divided inner peripheral surface 132 in the direction along the rotation axis RA other than the length is larger than the length of the divided outer peripheral surface 127 in the direction along the rotation axis RA.

The divided outer circumferential surface 127 is inclined so as to approach the rotation axis RA as approaching the bottom of the housing 110. The inclination angle of the divided outer circumferential surface 127 with respect to the rotation axis RA is preferably the same as the inclination angle of the corresponding divided inner circumferential surface 132 with respect to the rotation axis RA. The number of the divided outer circumferential surfaces 127 is preferably the same as the number of the divided inner circumferential surfaces 132. A communication hole 123 opens in at least a part of the divided outer circumferential surface 127.

The inner spacer surface 128 is disposed between the adjacent two divided outer circumferential surfaces 127 via the connection surface so as to surround the rotation axis RA. In a state where the housing section 120 is assembled in the housing 110, the inner partition surface 128 does not contact any surface of the housing 110. The length of the inner partition surface 128 in the direction along the rotation axis RA can be set according to the length of the divided outer circumferential surface 127. The inner partition surface 128 may be inclined with respect to the rotation axis RA or may be parallel to the rotation axis RA.

The number of the inner partition surfaces 128 is one or two or more, and may be set according to the number of the divided outer circumferential surfaces 127. When the number of the divided outer circumferential surfaces 127 is two, the number of the inner partition surfaces 128 is one, and when the number of the divided outer circumferential surfaces 127 is three, the number of the inner partition surfaces 128 is two. In the present embodiment, since the number of the divided outer peripheral surfaces 127 is three, the number of the inner partition surfaces 128 is two. The number of inner spacer surfaces 128 is preferably one less than the number of divided outer peripheral surfaces 127. That is, preferably, one inner partition surface 128 is disposed between each two of the divided outer peripheral surfaces 127.

The chamber 122 also functions as a reaction tank that temporarily stores a fluid such as a liquid or a gas, such as a sample or a reagent, and reacts the fluid or the like. The number of chambers 122 is not particularly limited. The number of the chambers 122 may be appropriately set according to a process required for analysis. In the present embodiment, the number of the chambers 122 is 10. The size of each chamber 122 is also not particularly limited. The chambers 122 may be the same size or different sizes. In the present embodiment, the plurality of cavities 122 in the upper half of the sheet in fig. 4A and the plurality of cavities 122 in the lower half of the sheet corresponding to each of the plurality of cavities 122 in the upper half of the sheet have the same shape. That is, in the present embodiment, the plurality of chambers 122 are formed symmetrically with respect to a cross section including the rotation axis RA as a boundary.

The communication hole 123 is formed in the sidewall 121. The communication hole 123 connects the outside of the sidewall 121 with the chamber 122. In the present embodiment, the communication hole 123 has a linear shape. The number of the communication holes 123 is not particularly limited. The number of the communication holes 123 may be appropriately set according to the specification of the fluid treatment apparatus 100. The communication hole 123 includes a first communication hole 141 and a second communication hole 142.

The first communication hole 141 is used to suck fluid from the chamber 122 or discharge fluid into the chamber 122. In the present embodiment, the plurality of first communication holes 141 are formed in the divided outer circumferential surface 127 on the bottommost side. The number of the first communication holes 141 is the same as the number of the chambers 122.

The second communication hole 142 is used as a vent hole or the like. In the present embodiment, the plurality of second communication holes 142 are formed in the divided outer peripheral surface 127 on the side closest to the opening (upper stage) and the divided outer peripheral surface 127 on the middle stage. The number of the second communication holes 142 is the same as the number of the chambers 122.

Although not particularly shown, the housing section 120 may have a cover that covers at least a part of the opening of each chamber 122.

In the fluid processing device 100, for example, a syringe is inserted into the insertion portion 113, and the liquid in the chamber 122 is sucked through the first communication hole 141. At this time, the second communication hole 142 functions as a vent hole. Next, the housing unit 120 is rotated with respect to the housing 110 about the rotation axis RA. At this time, the divided inner peripheral surface 132 of the housing 110 contacts the divided outer peripheral surface 127 of the housing 120. Then, the liquid in the syringe is discharged into the chamber 122. In this way, in the fluid processing apparatus 100, when the liquid is sucked from the chamber 122 or discharged into the chamber 122, the second communication hole functions as a vent hole. Further, since the divided inner peripheral surface 132 of the housing 110 slidably contacts the divided outer peripheral surface 127 of the housing 120, liquid leakage does not occur.

(Effect)

As described above, in the fluid treatment apparatus 100 of the present embodiment, the inner circumferential surface 131 of the housing 100 is divided into the plurality of divided inner circumferential surfaces 132. Therefore, for example, in the case of manufacturing the housing 100 by injection molding, even when it is desired to correct only the shape of the divided inner circumferential surface 132 located between the uppermost portion and the bottom portion, it is possible to easily adjust only the corresponding surface of the divided inner circumferential surface 132 to be corrected in the mold without adjusting the corresponding surface of the mold corresponding to the other divided inner circumferential surface 132.

Further, in a fluid treatment apparatus in which the inner peripheral surface of the housing is formed of one inner peripheral surface without dividing the inner peripheral surface into a plurality of divided inner peripheral surfaces, it is difficult to specify a target portion to be corrected, and therefore, it is sometimes difficult to measure a detailed dimension of a product (molded article), and a measurement error is large. Similarly, when adjusting the mold, only the portion to be adjusted should be adjusted, but it is difficult to identify the portion, which may cause a large machining error. Further, when the dimensions are checked after machining, it may be difficult to perform detailed measurement at an accurate position.

On the other hand, in the fluid treatment apparatus 100 of the present embodiment, since a sharp ridge line is formed between the divided inner circumferential surface 132 and the stepped surface 133, the position of the portion to be corrected can be accurately grasped with reference to the ridge line, and the position of the portion to be adjusted can be easily specified also on the corresponding surface in the mold. Therefore, according to the fluid treatment apparatus 100 of the present embodiment, the shape of the inner circumferential surface of the housing 110 can be easily and accurately corrected.

In the fluid handling device 100 of the present embodiment, since the shape of the inner peripheral surface 131 of the housing 110 can be easily and accurately measured and corrected, measurement, processing, and manufacturing of a product become easier, and a precise product can be manufactured compared to the conventional technology. Thus, the following product is constituted: the fitting between the housing 110 and the housing 120 is improved, leakage between the housing 110 and the housing 120 is suppressed, and the rotation resistance is small. As a result, the detection error is reduced, and the rotational load applied to the drive unit of the apparatus, the product, and the like can be reduced.

[ embodiment 2]

The fluid treatment apparatus according to embodiment 2 differs from the fluid treatment apparatus 100 according to embodiment 1 only in the structure of the inner circumferential surface 231 of the housing 210. Therefore, the same components as those of the fluid treatment apparatus 100 according to embodiment 1 are denoted by the same reference numerals, and descriptions thereof are omitted.

(construction of fluid treatment apparatus)

Fig. 5A and 5B are diagrams showing the structure of a housing 210 in a fluid treatment apparatus according to embodiment 2. Fig. 5A is a cross-sectional view (corresponding to fig. 3A) including the rotation axis RA and not including the insertion portion 113, and fig. 5B is a partially enlarged cross-sectional view of the region a shown in fig. 5A. The one-dot chain line in fig. 5B indicates a virtual straight line parallel to the rotation axis RA.

The fluid processing device has a housing 210 and a housing. As shown in fig. 5A and 5B, the housing 210 includes a base 111, a housing main body 212, an insertion portion 113, and an outside communication hole 114.

The inner peripheral surface 231 of the housing 212 includes a plurality of outer partition surfaces 243 in addition to the plurality of divided inner peripheral surfaces 132 and the plurality of step surfaces 133. The outer partition surface 243 is disposed between the opening-side end of the divided inner circumferential surface 132 and the inner end of the stepped surface 133. The outer partition surface 243 in the cross section including the rotation axis RA has a linear shape. In a cross section including the rotation axis RA, the outer spacer surface 243 may be inclined with respect to the rotation axis RA or may be parallel to the rotation axis RA. In the present embodiment, the outer spacer surface 243 is parallel to the rotation axis RA in a cross section including the rotation axis RA. This enables the boundary (ridge) between the divided inner peripheral surface 132 and the outer partition surface 243 to be appropriately molded.

(Effect)

The fluid treatment apparatus according to the present embodiment not only has the effects of the fluid treatment apparatus 100 according to embodiment 1, but also can properly form the boundary (ridge) between the divided inner circumferential surface 132 and the outer partition surface 243, and therefore the reference position for fine adjustment of the divided inner circumferential surface 132 can be made more clear.

[ embodiment 3]