WO2007132723A1

WO2007132723A1 - Object to be subjected to spraying, having portion with specialized shape

Info

Publication number: WO2007132723A1
Application number: PCT/JP2007/059641
Authority: WO
Inventors: Yasunori Onozuka
Original assignee: Yasunori Onozuka
Priority date: 2006-05-13
Filing date: 2007-05-10
Publication date: 2007-11-22
Also published as: JPWO2007132723A1

Abstract

An object to be subjected to spraying has a body to be subjected to spraying having an opening, a seat for forming an opening end of the opening, a closing member for closing at least a part of the opening, and a seal member installed between the seat and the closing member. The seat has a portion with a curved specialized shape to which the opening side inner surface of the seal member is tangential and projecting toward the inside of the object in a cross section passing through the centerline of the opening. Because of the portion with a specialized shape, the object to be subjected to spraying has improved spray deposition characteristics.

Description

Specification

Body to be bathed with shape-specific part

Technical field

[0001] The present invention provides a shape feature for facilitating bathing in a difficult-to-bath area when a spray nozzle is used to inject fluid onto a bathing body that is a three-dimensional object having various shapes. It is related with the to-be-bathed body provided with the conversion part.

Background art

[0002] Various containers used in industrial plants, such as tanks, agitation tanks, culture tanks, and oil tankers and bathrooms, as well as objects to be coated, use spray nozzles for cleaning and painting. It may be necessary to bathe the fluid. Usually, these are ideal to perform automatic bathing by machine without human intervention from the viewpoint of labor cost, safety, working time, accuracy, etc. For that purpose, it is necessary to reach every corner of the hydrodynamic bath to be sprayed from the spray nozzle.

[0003] In the body to be bathed that requires automatic bathing, there are indispensable openings such as connection pipes and manholes in tanks, and doors and windows in bathrooms. In many cases, the shape of the opening is inconsistent with the shape necessary for obtaining a full bath as a body to be bathed in order to fulfill its function. In such a case, there is a simulation technology that uses a high-speed electronic computer to design the body to be bathed entirely.

[0004] Patent Document 1: JP-A-2006-61901

Disclosure of the invention

Problems to be solved by the invention

[0005] FIG. 8 is an enlarged view of a mounting portion of a stirrer in a stirring tank that requires bathing with a cleaning liquid. Usually, the mounting portion of the stirrer is circular when viewed from the rotating shaft direction of the stirrer. The stirrer 101 is agitator attached to a seat 106 at the opening end of the opening 105 of the stirring tank 104 by means of a tightening bolt 103 through a sealing material called gasket packing (here, the name is unified). It is fixed via a flange 107 on the side. Stirrer flange 107 and open end The seat 106 is fixed to the agitator seat together with the gasket 102 by the fastening force of the fastening bolt 103.

Such a tightening shape is generally called a flange joint structure, and it is also used for mounting parts of measuring instruments such as pipe joints, manholes, and pressure gauges. Sanitary joints that use a clamp instead of tightening bolts to achieve close contact are also standardized and marketed, but close contact using gaskets is the same.

Gaskets are used to maintain the sealing properties of the body to be bathed, and are also present for similar purposes in bathroom doors and tanker hatches. In any case, apply some force to ensure close contact with the gasket and ensure sealing performance.

[0006] In general, the fluid that flies and collides with the wall surface of the object to be bathed is partially reflected, and most of the fluid spreads along the wall surface. The spreading direction is determined by the incident angle between the trajectory of the flying fluid and the collision surface, and is distributed reflecting the flying vector before the collision.

In other words, it flows a lot on the diagonal side, which can be said to be an extension of the flight trajectory, and flows only in the upstream direction of the flight trajectory. Also, the flow velocity of the flow that spreads by colliding becomes faster on the diagonal side, just like the way of spreading. This tendency becomes more prominent as the incident angle is shallower.

[0007] FIG. 9 is an enlarged view of the periphery of the gasket 102 in the mounting portion of the stirrer, and a view showing a situation where fluid is bathed in the portion.

The inner diameter of the gasket 102 is the same as the inner diameter of the portion in contact with the gasket 102 of the seat 106.

This is because if the inner diameter force of the gasket 102 is smaller than the inner diameter of the part in contact with the gasket 102 of the seat 106, there will be a part where the force of tightening the gasket from both sides will not work, and that part will not be in close contact with the flange on the stirrer side and will become a gap .

When gaps are created, pollutants are mixed in and allow germs to propagate there. Typical equipment that requires automatic cleaning is equipment for pharmaceutical manufacturing plants and food plants, but these do not allow germs to propagate. In addition, miscellaneous bacteria tend to proliferate in favor of minute gaps and form colonies.

If the inner diameter force of the gasket 102 is larger than the inner diameter of the portion of the seat 106 in contact with the gasket 102, the difference in inner radius becomes a dent on the outer side when viewed from the center of the opening, and dirt is removed. In addition to being a place to accumulate, it is a place not cleaned by the cleaning liquid sprayed from the cleaning spray.

The seat 106 inclines the inner surface 106a on the central axis side of the opening 105 with respect to the center axis of the opening 105 (inclined so as to become wider toward the inside of the stirring tank) due to the requirement of bathing properties. A force that allows the cleaning liquid from the spray nozzle to enter the surface 106a. Gasket 102 The inner surface 102a facing the opening 105 of the surface itself cannot be inclined. This is because if the gasket inner surface 102a is inclined, a portion where the force for tightening the gasket from both sides is not generated, and that portion does not adhere to the flange on the stirrer side and becomes a gap.

In addition, tightening the gasket 102 requires a certain degree of mechanical strength on the seat 106 side, and it is not sufficient to incline the inner surface of all the seats 106, so there is a limit to the inclination angle. In many cases, the required angle cannot be secured. If the required angle cannot be ensured, there is no point in inclining. As a result, the vicinity of the gasket is not inclined in the same manner as the inner surface of the gasket.

For this reason, the non-inclined portion 106b is frequently generated as long as the sealing property is secured through the gasket 102.

If there is a portion that cannot be tilted at the required angle in this way, there will be a portion 108 where the cleaning liquid sprayed from the spray nozzle is not directly applied.

[0008] In FIG. 9, the majority of the cleaning liquid 109 that has collided with the flange 107 on the stirrer flows to the center side (stirring shaft 110 side) of the flange 107, and a few flow from the center to the (gasket inner surface 102a). The flow rate is also slow. Accordingly, the portion 108b without the inclination of the gasket inner side surface 102a and the seat 106 has a portion 108 where sufficient cleaning performance cannot be obtained. This problem cannot be solved even if shape design is performed using the above-mentioned simulation.

[0009] When such a difficult-to-clean part 108 exists, there is a case where cleaning cannot be completed completely even if the cleaning liquid is sprayed. Even if the cleaning can be completed, a slight flow rate and flow velocity are not obtained. It takes a very long time to rely on the cleaning solution.

In general, such difficult-to-clean parts are less than 1% of the total required bath area of the body to be bathed. Majority The cleaning time is required.

In cleaning, simple water may be used, but expensive water such as “warm water”, “purified water”, “pure water”, “cleaning liquid with surfactant”, “organic solvent”, “cleaning liquid with sterilizing and sterilizing material” Is often used.

If there is a method for efficiently cleaning difficult-to-clean parts, the cleaning time can be drastically reduced. The short cleaning time can save a lot of these cleaning solutions (even if they are just tap water).

[0010] An object of the present invention is to solve the above-described problems and to provide a body to be bathed that does not have a portion where liquid bathing is not performed.

Means for solving the problem

[0011] A bath body of the present invention for solving such a problem includes a bath body having an opening, a seat forming an opening end of the opening, and at least a part of the opening. And a gasket provided between the seat and the closing member, and the seat is parallel to the central axis of the opening of the gasket in a cross section passing through the central axis of the opening. The inner side surface or an extended line thereof is a tangent line, and is provided with a curved shape specializing portion that protrudes toward the inside of the body to be bathed.

Furthermore, a bath body of the present invention for solving such a problem includes a bath body that has an opening and bathes a fluid, a seat that forms an open end of the opening, A closing member that closes at least a part of the opening, and a sheet material provided between the seat and the closing member. The seat has a cross section passing through the central axis of the opening. The surface which contacts the said sealing material becomes a tangent, and is provided with the shape specialization part of the shape which combined with the curve shape which curves toward the said to-be-bathed body, or a curve and a straight line. Still further, a bath body of the present invention for solving such a problem includes a bath body having an opening, a seat that forms an opening end of the opening, and at least a part of the opening. A closing member for closing, and a gasket provided between the seat and the closing member, the closing member for guiding the fluid to the inner surface of the gasket in a portion facing the inside of the bath body. The shape specific part which becomes convex toward the inside of the body to be bathed is provided.

Further, the distance between the shape specializing portion provided on the closing member and the inner surface of the seat is a center line. It is formed small toward the outside.

The invention's effect

[0012] As described above, according to the present invention, the bathing property of the body to be bathed can be improved by providing the body to be bathed with the shape specific part.

Brief Description of Drawings

[0013] FIG. 1 is a diagram showing a typical shape of a stirring tank used in an industrial plant or the like and requiring internal cleaning.

FIG. 2 is a view showing a shape around a gasket (sealing material) of an opening in a container according to Embodiment 1 of the present invention.

FIG. 3 is a view showing a shape of an opening in a container around a gasket (seal material) according to Embodiment 2 of the present invention.

FIG. 4 is a view showing a shape around a gasket (sealing material) of an opening in a container according to Embodiment 3 of the present invention.

FIG. 5 is a view showing a shape around a gasket (sealing material) of an opening in a container according to Embodiment 4 of the present invention.

FIG. 6 is a view showing a shape when a valve is attached to an opening in a container according to Embodiment 5 of the present invention.

FIG. 7 is an enlarged view of the vicinity of a valve seat when a valve is attached to an opening in a container according to Embodiment 5 of the present invention.

FIG. 8 is an enlarged view of a mounting portion of a stirrer in a conventional stirring tank.

FIG. 9 is an enlarged cross-sectional view of a gasket at a mounting portion of a stirrer in a conventional stirring tank.

Explanation of symbols

[0014] 1 body plate, 2 upper end plate 8 flying cleaning liquid, 12 gasket, 13 lid

BEST MODE FOR CARRYING OUT THE INVENTION

[0015] FIG. 1 is a diagram showing the shape of a stirring tank generally used in plants such as pharmaceuticals and foods. The term “tank” is also used here to indicate a stirring tank. The upper end plate 2 and the lower end plate 3 are attached to the barrel 1 of the stirring tank, and the upper end plate 2 has a manhole.

4, agitator seat 5 and spray nose seat 6 are attached.

A stirrer 7 that stirs the liquid inside is attached to a stirrer seat 5.

The spray nozzle 9 for injecting the flying cleaning liquid 8 is attached to the spray nozzle seat 6 and moved.

[0016] The flying cleaning liquid 8 ejected from the spray nozzle 9 obtains energy for the flight by the fluid pressure when the cleaning liquid is supplied to the spray nozzle 9.

The shape of the flying cleaning liquid 9 at the time of flight is about 0.1 mm to about 1 Omm (referred to as a droplet).

Even when sprayed from the same spray nozzle 9 and sprayed in the same direction and with the same fluid supply pressure, the droplet diameters fly randomly with various droplet diameters with a certain width that is not completely the same. Different droplet sizes have different ways of receiving air resistance during flight, and therefore have various speeds at random with a certain width during flight.

Therefore, even if a droplet collides with a certain point on the bathing body and a droplet collides with the immediate vicinity, a difference in collision speed is generated which is larger than the difference in collision speed due to the difference in the flying distance and flying direction.

That is, the droplets that collide with the immediate vicinity do not collide at the same time.

[0017] In addition to what is shown in the figure, various seats such as a seat for connecting a liquid injection pipe and a seat for attaching a measuring instrument are attached to an actual stirring tank. The part with the seat becomes an “opening” for the stirring tank. The opening may have a non-circular shape such as a square, but is generally circular.

Since the opening relates the inside of the tank and the outside of the tank for some reason, the central axis is perpendicular to the outer surface of the tank (the normal line and the normal axis at the point where the central axis intersects the outer surface of the tank). Or inclined force cannot be parallel to the outer surface of the tank. In each of the following “embodiments”, all openings are described as being circular when viewed from the axial direction of the openings.

[0018] The entire agitation tank is supported by a plurality of legs 10, and the legs 10 are fixed to a floor, a beam, or the like, so that the gravity direction of the agitation tank does not change during cleaning. [0019] The main material of the agitation tank is mainly metal, and some use plastic, FRP, glass, etc., and some have a resin lining (coating) on the metal surface.

[0020] Normally, at the time of cleaning, the opening is closed so that the spray of the cleaning liquid does not scatter to the outside, and so that external dirt and germs do not enter the stirring tank.

For this reason, the flying cleaning liquid 8 sprayed from the spray nozzle 9 collides with any part of the inner surface of the agitation tank. It spreads in each direction along the surface.

When the collided inner surface of the tank is a convex curved surface (a curved surface protruding toward the inside of the tank), it flows along the inner surface of the tank for a certain distance, and then the flow velocity and the centrifugal force caused by the convex surface. As a result, the tank inner surface may be detached and re-flighted. Since it flies again after flowing along a curved surface for a certain distance, the trajectory is different from the flight trajectory before the collision.

The direction of flow along the surface, the flow velocity and the flow distribution, the presence / absence of re-flight, the re-flight direction, the re-flight speed and the amount of re-flight liquid are determined by the incidence angle of the flight trajectory and the amount of liquid f It is largely determined by the flight speed, the macroscopic shape of the collision surface, and the direction of gravity at the collision point.

Actually, the microscopic surface shape (surface roughness, etc.) of the inner surface of the agitation tank and the particle size of the flying cleaning liquid have a small effect, but are not taken into account in the following explanation.

[0021] When the collided inner surface of the tank is a concave curved surface (a curved surface that is concave toward the outside of the tank), the flow direction along the surface and the distribution of flow velocity and flow rate are similar to those of the convex curved surface. It is largely determined by the incident angle of the flight trajectory to the inner wall of the tank at the time of collision, the amount of flying liquid, the flying speed, the macroscopic shape of the collision surface, and the direction of gravity at the collision point.

However, the cleaning liquid flowing on the concave curved surface will not re-fly as long as the surface flowing in the concave surface is concave.

[0022] The inner surface of the tank in which the inner surface is required to have a cleaning property is a portion where the surface that is straight in the cross section and the surface that is curved in the cross section is a curve in the surface force cross section that is straight in the cross section It must be tangential to the surface or close to it. The fact that it is not tangent means that the connecting portion between the phase that is a straight line in the cross section and the surface that is the phase in the cross section is a corner. Must be obtuse in degrees.

From a microscopic point of view, a sharp angle is inevitably formed in a jagged shape compared to a flat surface, a curved surface, or a “big angle and an obtuse angle”, and the cleanability of that part is poor. It also becomes a hotbed such as.

Furthermore, for the same reason, when a surface that is a straight line in a cross section and a surface that is a curve in the cross section are connected, or a portion where surfaces that are different curves in the cross section are connected is not a corner, it is connected through a curved surface. desirable.

[0023] The cleaning power does not reach at the time of collision when it flows along a large surface because of impact impact at the time of collision.

Also, when flowing along a surface (hereinafter referred to as “surface flow”) and at the time of a collision, the cleaning force largely reflects the speed and the amount of liquid.

[0024] The spray nozzle 9 is generally sprayed evenly in the whole ball direction, or in the hemisphere direction on the north side of the equator (assuming that the north on the earth is above the stirring tank). Is done.

It is to be noted that the cleaning property of the agitation tank becomes a problem in an opening portion that is generally located above the spray nozzle 9 and attached to the upper end plate 2.

On the inner surface of the agitation tank located below the spray nozzle 9, the cleaning liquid once sprayed upward due to the effect of gravity falls again while increasing the speed downward or flows downward, so the amount of the bath Are in large quantities, and cleaning properties are not a problem.

In the following description, the central axis of the opening is directed upward toward the outside of the tank (the upward direction here refers to the globe, for example, the north is upward, and the central axis of the opening is outside the tank. It is assumed that the direction is in the range of 30 to 90 degrees north latitude.

[0025] Embodiment 1.

Hereinafter, a portion that hits the seat 106 will be referred to as a “seat”.

Further, hereinafter, the portion that contacts the stirrer side flange 107 is referred to as a “lid”. 2 is provided with a convex R (a shape-specifying part formed of a curved surface) 11a on the lower inner surface of the “part in contact with the gasket 12” of the seat 11. As shown in FIG.

The convex Rl la is a cross section passing through the central axis of the opening (hereinafter referred to as the central cross section). And ), The inclined portion l ib of the seat 11 and the inner side surface 1 1c of the seat 11 formed so as to be continuous with the gasket inner side surface 12a and the same cross-sectional angle are tangential or within a range of ± 10 degrees. It is a curved surface having a cross-sectional curve formed so as to be a straight line close to a tangent line. The range of ± 10 degrees is a range designation for preventing the portion where the inner surface 11c of the seat 11 is connected to the convex Rl la from being a sharp angle.

In FIG. 2, the cleaning liquid 8 flying from the lower left to the upper right enters the space surrounded by the seat.

The flying cleaning liquid 8a collides with 1 lb of the inclined portion of the seat 11 and the incident angle is shallow, so most of it flows along the 1 lb surface while decelerating upward due to gravity. If the flight speed is not enough, it will stall before reaching the convex Rl la and flow downward.

[0027] Since the flying cleaning liquid 8b collides with the convex Rl la and the incident angle is shallow, many of the flying cleaning liquid 8b flows upward along the convex Rl la and flows over the convex curved surface. The lid part 11c, which is a continuous surface, and the gasket inner surface 12a are flushed and washed, collide with the lid part 13a near the gasket of the lid 13, and the flow direction is axially centered around the opening. In the opposite direction, the lid portion 13a is washed and washed.

If the collision speed is very fast, the convex Rl la is flushed, then the convex Rl la is disengaged, and it is a part of the new flight path that is close to the inner surface of the gasket of the lid 13. Reach the lid part 13a. In the collision with the lid portion 13a, the incident angle is deep and almost perpendicular, so after the collision it spreads almost uniformly in each direction and flows into the surface.

Of the cleaning liquid that spreads almost uniformly and flows along 13a, the cleaning liquid that flows in the direction of the gasket inner surface 12a hits the gasket inner surface 12a, changes its flow downward, and cleans the gasket inner surface 12a. While flowing.

[0028] The flying cleaning liquid 8c collides from the same plane direction with the gasket inner side surface 12a at a shallow incident angle on the surface of the lid 13 in contact with the tank, so that it hardly spreads in the direction of the gasket inner side surface 12a. It does not contribute much to cleaning of gasket inner surface 12a and lid part 13a.

[0029] The convex Rl la efficiently cleans the gasket inner surface 12a and the lid portion 13a, which was difficult to clean in the prior art, by intentionally changing the traveling direction of the flying cleaning liquid 8a. I can do it. [0030] The convex Rl la needs to be a non-circular curve approximate to an arc corresponding to a radius of 0.5 to 300 mm in the central cross section. If the radius is too small, the corners will not be affected, and the cleaning liquid will flow only a short distance on the curved surface, so the change in the direction of travel is small.

On the other hand, if the radius is too large, the distance to flow on the curved surface will be long, and it will be decelerated by gravity while flowing on the curved surface, and will not reach the lid part 13a.

[0031] If there is a linear cross section 11c that continues above the convex R 11a, the distance between the convex R 11a and the gasket inner surface 12a or the lid portion 13a, which is a difficult-to-clean part, increases, and the area of the lid portion 13a increases. Therefore, it is better not to have a straight section 11c in terms of cleaning performance, but the mechanical strength of the seat 11 when tightening the gasket 12 Considering the workability at the time of manufacture, it is often unavoidable.

Even if it is unavoidable, the length of the cross section passing through the central axis of the opening of the straight cross section 11c connected to the upper side of the convex R 11a is in a condition other than the detergency requirement such as mechanical strength. It ’s better to keep it as short as possible.

[0032] Embodiment 2.

In the lid 13 shown in FIG. 3, “a portion closer to the central axis of the opening than the portion in contact with the inner surface 12a of the gasket 12” is provided with a shape specializing portion (hereinafter referred to as a change curve) 14. It has been.

[0033] The change curve 14a is a curved surface that is a straight line that slopes downward in the central cross section from the "part closer to the central axis of the opening than the part in contact with the inner surface 12a of the gasket 12" of the lid 13. It is.

The change curve 14b is a curved surface having a concave curve (concave toward the outside of the tank) that makes the surface where the change curve 14a and the upper surface of the gasket 12 of the lid 13 contact each other continue in the center section.

The change curve 14a is tangent to the change curve 14b or close to the tangent line within a range of ± 10 degrees and connected.

The change curve c continues until the point where the change curve 14a crosses the face-to-face change curve 14a across the central axis of the opening when the change curve 14a is long in the center section. In order to prevent unnecessary thickening of the material, it exists to form a surface 13b parallel to the surface in contact with the upper surface of the gasket 12.

In addition, since the change curve 14a is long in the center section, when the change curve 14a intersects the facing change curve 14a across the central axis of the opening, the intersection becomes a corner, and the part is seen microscopically. It is also to prevent jaggedness.

[0034] The change curve 14c is a force at which the change curve 14a is tangent to the central cross section, or

A connection that is close to a tangent within a range of ± 10 degrees is a curved surface that is referred to as a change curve 14a.

In FIG. 3, the cleaning liquid 8 flying from the lower left to the upper right enters the space surrounded by the seat.

[0036] The flying cleaning liquid 8d collides with the change curve 14b, but the cleaning liquid with a large incident angle does not flow in a large amount in the direction of the gasket inner surface 12a and the lid portion 13a. Does not contribute much.

[0037] Since the flying cleaning liquids 8e, 8f, and 8g collide with the change curve 14a and are spread in the direction of the gasket inner surface 12a, which is a difficult-to-clean part, and the lid part 13a, and are incident from the direction where the surface easily flows. Many parts spread in the direction and flow.

The flushed cleaning liquid passes through the change curve 14b, flows to the surface while cleaning the difficult-to-clean portion 13a, and eventually collides with the gasket inner surface 12a.

The impinging cleaning liquid changes the flow downward and flows on the gasket inner surface 12a, and also flows on the inner surface of the seat 11 connected thereto.

Even if it is decelerated considerably when it hits the gasket inner surface 12a, the cleaning liquid that has started to flow downward is accelerated by gravity.

As described above, the change curve 14 changes the traveling direction of the flying cleaning liquids 8e, 8f, and 8g, and can efficiently clean the gasket inner surface 12a and the lid portion 13a, which were conventionally difficult to clean. .

[0038] The change curve 14a exists as a collision surface for changing the cleaning liquid in an intended direction. Increasing the total length of the change curve 14a in the central cross section can increase the amount of cleaning liquid whose direction is changed as intended, The amount of processing increases.

[0039] If the requirement from the cleaning requirement is low, the connecting portion of the change curve 14b and the change curve 14c can fully take charge of the replacement of the role, even if the change curve 14a does not exist, the shape The change curve 14 as a specialized part is established.

In other words, the change curve 14 is provided on the “lid” at the opening of the container that requires bathing properties, and is located inside the gasket inner surface 12a (in the direction of the central axis of the opening). It has an incident angle that spreads the liquid to the inner surface of the gasket much with respect to the flight trajectory, and has a role to change the traveling direction of the cleaning liquid in the direction of the inner surface of the gasket. A surface that plays a role in smoothly connecting the surface that has a large incident angle and a surface that contacts the top surface of the gasket on the lid, and an incident angle that spreads the cleaning solution to the inner surface of the gasket more than the flight trajectory. This is because the “surface that becomes the incident angle that spreads the flying cleaning liquid to the inner surface of the gasket more than the flight trajectory” inside the surface (in the direction of the central axis of the opening) does not become long in the center section. And a surface having a split, is a complex curved surface with three roles.

As a result, the change curve 14 has a shape protruding toward the inside of the tank on the “surface in contact with the upper surface of the gasket of the lid”.

As described above, the change curve 14 can function on two different curved surfaces as long as the three roles can be fulfilled.

Such a shape specializing unit will be referred to as a “change curve”.

[0040] Embodiment 3.

The seat in FIG. 4 includes a shape specializing part, convex Rl la, for changing the traveling direction of the flying cleaning liquid 8 to the intended direction.

Further, the seat 11 and the cover plate 13 in FIG.

The convex Rl la and how the change curve 14 changes the traveling direction of the cleaning liquid in the intended direction are as described in the first and second embodiments.

By providing both, the amount of the cleaning liquid that can be changed in the traveling direction by the shape specializing unit is increased as compared with the case where one of them is provided, so that the cleaning effect is increased. [0041] In FIG. 4, the portion that is most difficult to be cleaned is 12c that is the upper end of the gasket inner surface 12a. The gasket inner surface 12a and the lid 13 part 13a are the intersections in the central cross section, and are recessed at a right angle that is the boundary between the acute angle and the obtuse angle. Constitutes a corner.

Such a place tends to become a hotbed of germs as soon as dirt accumulates. As shown in Figure 4, if convex Rl la and change curve 14 are provided, the intersection 12c is bathed by the horizontal force and the flow of two cleaning liquids from below, and depending on the timing, the intersection 12c There are cases where two flows collide in the vicinity of, resulting in intense turbulence. In that case, the intersection 12c is naturally exposed to the turbulence.

It is generally known that violent turbulence contains energy that exceeds the flow rate it can hold, and has a high cleaning effect.

For this reason, the combined use of the convex Rl la and the change curve 14 brings about a cleaning effect equal to or greater than the “sum of each cleaning effect”.

[0042] Embodiment 4.

In Fig. 5, when lining (or coating) 17 such as fluororesin is applied to the metal seat 15 and lid 16, the portion where the lining surfaces with different angles intersect each other has a radius of about 1 to 20mm. The curved surface (commonly called R) is required. When the film is fixed, if there is no corner and there is a corner, it may cause fixing failure.

For this reason, in equipment that uses fluorine resin lining, etc., the seat cannot have an ideal convex R shape, and the gasket inner surface 12a is also located deep inside (outward as viewed from the center of the opening). Resulting in.

[0043] In the lid 16, the gasket inner surface 12a and the lid 13 up to that point are obtained by carefully deciding and providing the changing force tube 16a having the same shape and effect as the changing curve 14 in the second embodiment. The seat 11 can also be cleaned.

The cleaning performance improvement effect of change curve 14 and its principle are as already described in “Embodiment 2”. The change curve 16a is a shape specialization section having three roles similar to those of the change curve 14 and two or more different curves and straight lines in the central section. However, since the gasket inner surface 12a is located in the back of the gasket, the cleaning liquid 8 It will slow down to the inner surface 12a, or it will flow down due to deceleration and will flow down to reduce the flow rate.

In this case, it is more effective to set the change curve so that the flow path 18 of the fluid becomes narrower toward the back (the outward direction when viewed from the center of the opening and the direction closer to the gasket inner surface 12a). Cleaning can be performed. This is because the fluid 19 increases in velocity as it becomes a bottleneck as it progresses, and converges toward the back.

[0044] Embodiment 5.

FIG. 6 is a diagram of a valve with a convex R and a change curve and a seat flange 20 for mounting it. A valve 21 is mounted on the seat flange 20 via a gasket 12 with bolts or the like.

For the seat flange 20 as a “seat”, a valve body 21b and a valve seat 21c provided at the tip of the valve stem 21a exist as “lids”.

For the valve seat 21c as a “seat”, the valve body 21b exists as a “lid”.

The valve body 21b is pressed against the valve seat 21c by the upper and lower portions of the valve rod 21a, and shuts off or releases the flow of fluid injected into or discharged from the container.

FIG. 7 is an enlarged view of the vicinity of the valve seat 21c in FIG.

The contact portion 22 where the valve body 21b is in contact with the valve seat 21c is often made of a material having elasticity and plasticity, such as an elastomer.

Since these have elasticity, they are distorted when the fluid entering and leaving the container is shut off, and the flying fluid 8 does not collide directly, and a gap 23 that is a difficult-to-clean part is generated.

A part of the flying cleaning liquid 8 is a part of the valve 21 and collides with the convex R21 d having the same shape and effect as the shape specializing part convex Rl l a described in “Embodiment 1.”

The cleaning liquid that has collided with the convex R21d is part of the downward surface of the contact portion 22 by flowing along the curved surface 21e continuous above the convex R21d or re-flighting depending on the traveling speed, as in the first embodiment. Colliding with 22a, a part of the surface flows through the surface 22a toward the gap 23, finally reaches the gap 23, and the surface of the body to be bathed surrounding the gap 23 is cleaned.

Furthermore, a part of the other flying cleaning liquid 8 is a part of the valve 21 and collides with the “curved surface that is a curve in the central cross section” 21f. The impinging cleaning liquid flows upward on the curved surface 21f and flows upward on the surface 21g connected to the upper surface of the curved surface 21h. Pass through the 24 ”gap opening. Since the gap 24 is already saturated with a part of the other cleaning liquid 8, the cleaning liquid that has flowed through the surface 21g can be intuitively imagined from the shape formed by the gap 24 as long as it has sufficient speed and flow rate. On the contrary, the surface 22b, which is the lower surface of the contact portion 22, flows over the gap 24 so as to get over the gap 24.

For this purpose, however, the width in the direction perpendicular to the central axis direction of the opening in the central cross section of the surface 22b is made as small as the mechanical accuracy of the mechanism for raising and lowering the valve stem 21a permits, and the surfaces 21g, 22b and 21e Spatial force enclosed by must be narrow so that it is immediately saturated with the cleaning solution.

The shape formed by the surface 21g and the surface 21h connected to the surface 21g is not a “change curve”, but is a shape specializing portion having a shape conforming thereto.

[0047] A part of the flying cleaning liquid 8 is a part of the seat flange 20, and collides with the convex R20a having the same shape and effect as the shape specific part convex Rl la described in "Embodiment 1". .

The cleaning liquid that has collided with the convex R20a flows through the curved surface 20b that continues above the convex R20a as in `` Embodiment 1. '' After the collision, the surface flows along the surface 21i in the direction of the gasket inner surface 12a and reaches the gasket inner surface 12a.

In this manner, the gasket inner side surface 12a and the surface 2 li, which are difficult to clean, are effectively cleaned by the shape specializing portion protrusion R20a.

[0048] Another part of the flying cleaning liquid 8 collides with a change curve 21j which is a shape specializing part having the same effect and shape as the shape specializing part 14.

The impinging cleaning liquid changes its advancing direction and flows to the inner surface 12a of the gasket while cleaning the surface 21i which is a difficult-to-clean part.

As described above, the gasket inner surface 12a and the surface 21i, which are difficult to clean, are effectively cleaned by the change curve 21j which is the shape specific part.

[0049] In the change curve 21j, the curved surface corresponding to the change curve 14c in the change curve 14 is connected to the "surface parallel to the surface in contact with the upper portion of the gasket 12" at the center of the opening. Although there is no curved surface that originally corresponds to the change curve 14c, it is not always necessary to connect with the “surface parallel to the surface of the gasket 12”. The curved surface corresponding to the change curve 14c in the change curve 14 in the change curve 21k is connected to the inclined surface 21k by the required force for bathing in a part of the valve 21.

Industrial applicability

Three-dimensional objects that need to be bathed with a spray nozzle, such as tanks used in industrial plants, agitation tanks, culture tanks, oil tankers and bathrooms, and even objects to be coated It exists widely throughout society such as the world and home, and this invention can be used for many of them.

Claims

The scope of the claims

[1] A body to be bathed having an opening, a seat that forms an opening end of the opening, a closing member that closes at least a part of the opening, and a space between the seat and the closing member The seat has a curved shape in which the opening side inner surface of the sealing member is a tangent line and protrudes toward the inside of the bath body in a cross section passing through the center line of the opening. A body to be bathed with a shape-specific part.

[2] A body to be bathed that has an opening and receives a fluid, a seat that forms an opening end of the opening, a closing member that closes at least a part of the opening, and the seat and the closing member The seat has a straight section continuous with the inner surface of the seal member in a cross section passing through the center line of the opening, and the straight section is tangent. In addition, a body to be bathed provided with a curved shape specializing portion that protrudes toward the inside of the body to be bathed.

[3] A bath body having an opening, a seat that forms an opening end of the opening, a closing member that closes at least a part of the opening, and a space between the seat and the closing member A shape-specifying part that protrudes toward the inside of the bathed body for guiding the fluid to the inner side surface of the sealing material at a portion facing the inside of the bathed body. A body to be bathed.

4. The bath body according to claim 3, wherein a distance between the shape specializing portion provided on the closing member and an inner surface of the seat is reduced toward a center line force outward.