JPWO2007132723A1 - Body to be bathed with shape-specific part - Google Patents

Abstract

A bath body of the present invention includes 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, the seat, and the closing member. And the seat has a tangent to the opening side inner surface of the seal member in a cross section passing through the center line of the opening and protrudes toward the inside of the body to be bathed. By providing the curved shape specializing part and the shape specializing part on the body to be bathed, the bathing property of the body to be bathed can be improved.

Description

  The present invention is provided with a shape specializing unit for facilitating bathing in a difficult-to-bath area when a spray nozzle is used to inject a fluid onto a body to be bathed that is a three-dimensional object having various shapes. It relates to the body to be bathed.

  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, are covered with fluid using spray nozzles for cleaning and painting. May require bathing. Usually, from the viewpoint of labor cost, safety, working time, accuracy, etc., it is ideal to perform automatic bathing by machine without human hands. For that purpose, it is necessary for the fluid sprayed from the spray nozzle to reach every corner of the body to be bathed.

  A bathing body requiring automatic bathing has indispensable openings such as a nozzle for connection piping in a tank, a manhole, a door and a window in a bathroom. 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 technique using a high-speed electronic computer in order to design the body to be bathed entirely.

JP 2006-61901 A

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 agitator 101 is attached to a seat 106 at the opening end of the opening 105 of the agitation tank 104 by a tightening bolt 103 through a sealing material called gasket or packing (here, the name is unified). It is fixed via the flange 107. The flange 107 on the stirrer side and the seat 106 at the open end are brought into close contact with the agitator seat together with the gasket 102 by the tightening force of the tightening bolt 103.
Such a tightening shape is generally called a flange joint structure, and is also used for a fitting part of a measuring instrument such as a pipe joint, a manhole or a pressure gauge. Sanitary joints that are brought into close contact with each other by using a clamp without using a tightening bolt are also standardized and marketed. However, close contact with a gasket is the same.
The gasket is used to maintain the sealing property of the bath body and is also present for the same purpose in bathroom doors and tanker hatches. In any case, a certain force is applied to make close contact through the gasket to ensure a sealing property.

In general, the fluid that flies and collides with the wall surface of the object to be bathed is partially reflected in a small amount, 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.
That is, it flows a lot on the diagonal side, which can be said to be an extension of the flight trajectory, and only slightly flows 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, as with the way of spreading. This tendency becomes more prominent as the incident angle is shallower.

FIG. 9 is an enlarged view of the vicinity of the gasket 102 in the mounting portion of the stirrer, and is 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.
If the inner diameter of the gasket 102 is smaller than the inner diameter of the portion in contact with the gasket 102 of the seat 106, 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. is there.
When gaps are created, pollutants are mixed in and allow germs to propagate there. Typical equipment that requires automatic cleaning includes equipment in 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 of the gasket 102 is larger than the inner diameter of the portion of the seat 106 that is in contact with the gasket 102, the difference in the inner radius becomes a recessed portion on the outer side when viewed from the center of the opening, and the dirt is likely to collect. This is a place where the cleaning liquid sprayed from the cleaning spray is not cleaned.
The seat 106 inclines the inner surface 106a on the center 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 agitation tank) due to the requirement of bathing properties. The shape allows the cleaning liquid from the spray nozzle to enter 106a, but the inner surface 102a facing the opening 105 of the gasket 102 itself cannot be inclined. When the inner surface 102a of the gasket is inclined, a portion where the force for tightening the gasket from both sides is not generated, and the portion does not adhere to the flange on the stirrer side and becomes a gap.
In addition, in order to tighten the gasket 102, a certain degree of mechanical strength is required on the seat 106 side. If the inner side surfaces of all the seats 106 are largely inclined, the strength is insufficient, and the inclination angle is limited. In many cases, the required angle cannot be secured. If the required angle cannot be ensured, it is meaningless to incline, and 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 106 b is frequently generated as long as the sealing property is secured via the gasket 102.
If there is a portion that cannot be inclined at a necessary angle in this way, there will be a portion 10 8 where the cleaning liquid sprayed from the spray nozzle is not directly applied.

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 small number flows 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-described simulation or the like.

If such a difficult-to-clean part 108 is present, cleaning may not be completed completely even if the cleaning liquid is sprayed. Even if cleaning can be completed, the cleaning liquid with a slight flow rate and flow rate may be used. It takes a very long time to rely on.
In general, such difficult-to-clean parts are less than 1% of the total required bath area of the body to be bathed. A lot of cleaning time is required.
In cleaning, simple water may be used, but expensive water such as “warm water”, “purified water”, “pure water”, “cleaning solution with surfactant”, “organic solvent”, “cleaning solution 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 fact that the cleaning time is short can greatly save these cleaning liquids (which are valuable resources even if they are just tap water).

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

In order to solve such a problem, a bath body of the present invention includes a bath body having an opening, a seat that forms an opening end of the opening, and a closing member that closes at least a part of the opening. And a gasket provided between the seat and the closing member, and the seat has an inner surface parallel to the opening central axis of the gasket or an extension thereof in a cross section passing through the central axis of the opening. While a line becomes a tangent line, it has a curved shape specializing part 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 opening end of the opening, and the opening. And a sealing member provided between the seat and the closing member. The seat has a cross section passing through the central axis of the opening, and the closing member is the seal. The surface in contact with the material is a tangent line, and is provided with a shape specializing portion having a curved shape that is convex toward the inside of the body to be bathed or a combination of a curved line and a straight line.
Furthermore, 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 to a portion facing the inside of the body to be bathed. A shape specializing portion that is convex toward the inside of the body to be bathed is provided.
In addition, the distance between the shape specializing portion provided on the closing member and the inner surface of the seat is reduced from the center line toward the outside.

  As described above, the present invention can improve the bathing property of the body to be bathed by providing the body to be bathed with the shape specializing portion.

It is a figure which shows the typical shape of the stirring tank which is used for an industrial plant etc. and needs the internal washing | cleaning. It is a figure which shows the shape around the gasket (sealing material) of the opening part in a container by Embodiment 1 of this invention. It is a figure which shows the shape around the gasket (sealing material) of the opening part in a container by Embodiment 2 of this invention. It is a figure which shows the shape around the gasket (sealing material) of the opening part in the container by Embodiment 3 of this invention. It is a figure which shows the shape around the gasket (sealing material) of the opening part in the container by Embodiment 4 of this invention. It is a figure which shows the shape at the time of attaching a valve to the opening part in a container by Embodiment 5 of this invention. It is an enlarged view of the vicinity of the valve seat when the valve is attached to the opening in the container according to Embodiment 5 of the present invention. It is an enlarged view of the attachment part of the stirrer in the stirring tank of a prior art. It is an expanded sectional view of the gasket of the attaching part of the stirrer in the stirring tank of a prior art.

Explanation of symbols

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

FIG. 1 is a diagram showing the shape of a stirring tank that is generally used in plants such as pharmaceuticals and foods. The term “tank” is also used here to indicate a stirring tank.
An upper end plate 2 and a lower end plate 3 are attached to the body plate 1 of the stirring tank, and a manhole 4, a stirrer seat 5 and a spray nozzle seat 6 are attached to the upper end plate 2.
A stirrer 7 for stirring the liquid inside is attached to the stirrer seat 5.
A spray nozzle 9 for spraying the flying cleaning liquid 8 is attached to the spray nozzle seat 6.

The flying cleaning liquid 8 sprayed 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 flying cleaning liquid 9 has a granular shape (referred to as droplets) of about 0.1 mm to 10 mm at the time of flight.
Even when sprayed from the same single spray nozzle 9 and sprayed in the same direction and with the same fluid supply pressure, the droplet diameters are not completely the same, but fly with various droplet diameters randomly with a certain width. If the droplet diameter is different, the way of receiving air resistance during flight is also different, and therefore various speeds are randomly generated with a certain width during flight.
Therefore, even if a droplet collides with a certain point of the bathed body and a droplet collides with its immediate vicinity, a difference in collision speed larger than the difference in collision speed due to the difference in the flying distance and flying direction occurs.
That is, the droplets that collide with the immediate vicinity do not collide at the same time.

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 portion 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 at the point where the central axis intersects the outer surface of the tank (becomes a normal line). Or inclined, but 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.

  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.

  The main material of the stirring tank is mainly metal, and some use plastic, FRP, glass or the like, and some have a metal surface lined with resin (coating).

Normally, at the time of cleaning, the opening is closed so that splashes of the cleaning liquid do 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, and a small part is reflected at the time of collision and flies again, and the majority is along the inner surface of the agitation tank. And spread in each direction.
When the impinging tank inner surface is a convex curved surface (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 centrifugal force caused by flowing through the convex curved surface In some cases, the tank inner surface is detached and re-flighted. Since the re-flight occurs after flowing a certain distance along the curved surface, the trajectory is different from that before the collision.
The direction of flow along the surface, the distribution of flow velocity and flow rate, the presence / absence of re-flight, the re-flight direction, the re-flight speed and the amount of re-flight liquid are as follows: It is generally 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 influence, but are not taken into account in the following description.

Even when the inner surface of the tank that has collided is a concave curved surface (a curved surface that is recessed toward the outside of the tank), the direction of flow along the surface and the distribution of flow velocity and flow rate are the same as in the case of the convex curved surface. It is generally determined by the incident angle of the flight trajectory on the inner wall of the tank, the amount of the flying liquid, the flying speed, the macro shape of the collision surface, and the direction of gravity at the collision point.
However, the cleaning liquid flowing on the concave curved surface does not re-fly as long as the surface flowing is concave.

The inner surface in a tank that requires cleanability on the inner surface is a portion where the surface that is straight in the cross section and the surface that is curved in the cross section is the surface that is straight in the cross section is the surface that is curved in the cross section It must be tangent to 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 an angle, and even if it becomes an angle, it must be an obtuse angle with a very large angle There is.
From a microscopic point of view, the angle of sharp angles is inevitably shaped in comparison with flat surfaces, curved surfaces, and “big and obtuse angles”. It is also a hotbed.
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.

The cleaning power is large at the time of collision because of impact impact, and it does not reach at the time of collision when it flows along the surface.
Also, the cleaning force largely reflects the speed and the amount of liquid when flowing along the surface (hereinafter referred to as “surface flow”) and at the time of collision.

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).
In addition, it is an opening part generally attached above the spray nozzle 9 and attached to the upper end plate 2 that the cleaning property of the stirring tank becomes a problem.
The inner surface of the agitation tank located below the spray nozzle 9 is once sprayed upwards due to the influence of gravity, and the speed decreases again, or the surface of the stirring tank flows downward. There is a large amount, and the cleaning property is not a problem.
In the following description, the central axis of the opening is directed upward toward the outside of the tank (upward here refers to the globe, for example, the north is upward, and the central axis of the opening is outside the tank. The description is made on the assumption that the direction of orientation is in the range of 30 to 90 degrees north latitude.

Embodiment 1 FIG.
Hereinafter, a portion that hits the seat 106 will be referred to as a “seat”.
Hereinafter, the portion that contacts the stirrer side flange 107 will be referred to as a “lid”.
2, a convex R (a shape specializing part configured by a curved surface) 11 a is provided on the lower inner surface of the “part in contact with the gasket 12” of the seat 11.
The convex R11a is continuous to the inclined portion 11b of the seat 11, the gasket inner side surface 12a, and the surface thereof at the same cross-sectional angle in a cross section passing through the central axis of the opening (hereinafter referred to as the central cross section). The inner surface 11c of the seat 11 formed in such a shape is a curved surface having a tangent or a cross-sectional curve formed so as to be a straight line close to the tangent in a range of ± 10 degrees. The range of ± 10 degrees is a range specification for preventing a portion where the inner surface 11c of the seat 11 is connected to the convex R11a 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 the inclined portion 11b of the seat 11, and since the incident angle is shallow, most of it flows along the surface of 11b while decelerating upward due to the influence of gravity. If the speed at the time of flight is not sufficient, the vehicle stalls before reaching the convex R11a, and flows downward.

Since the flying cleaning liquid 8b collides with the convex R11a and has a shallow incident angle, most of the flying cleaning liquid 8b flows upward along the convex R11a and flows on the convex curved surface. The lid portion 11c and the gasket inner side surface 12a are flushed and washed, collide with the lid portion 13a near the gasket of the lid 13, and the flow direction is changed to the direction of the central axis of the opening. The portion 13a is flushed while being washed.
When the collision speed is very fast, the convex R11a is flushed, then the convex R11a is detached, and a new flight trajectory is a portion close to the inner surface of the gasket of the lid 13 and is a difficult-to-clean part in the conventional shape. The part 13a of is reached. In the collision with the lid portion 13a, the incident angle is deep and substantially 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 the surface 13a, the cleaning liquid that flows in the direction of the gasket inner surface 12a hits the gasket inner surface 12a and changes its flow downward to clean the gasket inner surface 12a. While flowing.

  The flying cleaning liquid 8c collides from the same plane direction with the gasket inner 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 surface 12a. It does not contribute much to the cleaning of the lid portion 13a.

  The convex R11a can efficiently clean the gasket inner side surface 12a and the lid portion 13a, which is a difficult-to-clean part in the prior art, by intentionally changing the traveling direction of the flying cleaning liquid 8a.

The convex R11a needs to have a radius of 0.5 to 300 mm in the central cross section or a non-circular curve approximate to a corresponding arc. If the radius is too small, the angle does not change, and the cleaning liquid flows only on the curved surface for a short distance, so that the change in the traveling direction is small.
On the other hand, if the radius is too large, the distance over which the surface flows is long, and the surface is decelerated due to gravity while flowing over the curved surface, and does not reach the lid portion 13a.

If there is a linear cross-section 11c continuous 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, is increased, and the area of the lid portion 13a is also increased. In order to reduce the speed of the cleaning liquid until it reaches, it is better not to have the straight section 11c in terms of cleaning performance. However, the mechanical strength of the seat 11 when the gasket 12 is tightened and the workability at the time of manufacture are improved. Considering this, there are many cases where it is 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 allowed under conditions other than detergency requirements such as mechanical strength. As long as possible, it should be shorter.

Embodiment 2. FIG.
A shape specializing portion (herein referred to as a change curve) 14 is provided in the “portion closer to the central axis of the opening than the portion in contact with the inner surface 12a of the gasket 12” of the lid 13 shown in FIG. It has been.

The change curve 14a is a curved surface that is a straight line inclined downward in the central cross section from the “portion closer to the central axis of the opening than the portion in contact with the inner surface 12a of the gasket 12” of the lid 13.
The change curve 14b is a curved surface having a concave curve (concave toward the outside of the tank) that makes the surface in contact with the change curve 14a and the upper surface of the gasket 12 of the lid 13 continuous in the center cross section.
The change curve 14a is tangent to the change curve 14b, or is connected in a manner close to the tangent within a range of ± 10 degrees.
The change curve c continues to a point where the change curve 14a crosses the facing change curve 14a across the central axis of the opening when the change curve 14a is long in the center section, and the work material of the lid 13 is unnecessarily thick. In order to prevent it from being made, it exists to form a surface 13 b parallel to the surface in contact with the upper surface of the gasket 12.
Further, since the change curve 14a is long in the center section, when the change curve 14a intersects the face-side change curve 14a across the central axis of the opening, the intersection becomes an angle, and the portion is notched in a microscopic manner. It is also to prevent it.

  The change curve 14c is a curved surface in which the change curve 14a is a tangent in the central section, or a connection close to the tangent within a range of ± 10 degrees is defined as the 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.

  Although the flying cleaning liquid 8d collides with the change curve 14b, the incident angle is deep, and the cleaning liquid does not flow in a large amount in the direction of the gasket inner surface 12a, which is a difficult-to-clean part, and the lid portion 13a. do not do.

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 portion, and the lid portion 13a, and are incident from the direction in which the surface flows easily, a large number of portions are incident. It spreads in the direction and flows.
The flushed cleaning solution 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 its flow downward to flow on the gasket inner surface 12a and also flows on the inner surface of the seat 11 connected thereto.
Even if the vehicle is decelerated considerably when it collides with 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. .

  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 the cleaning liquid whose direction is intentionally changed, but the amount of the manufacturing material of the lid plate 13 and the amount of processing thereof increase.

If the requirement from the cleaning requirement is low, if the connected portion of the change curve 14b and the change curve 14c can sufficiently take charge of the role, even if the change curve 14a does not exist, the shape specializing unit The change curve 14 is established.
In other words, the change curve 14 is provided in the “lid” at the opening of the container that requires bathing properties, and is located inside the gasket inner side surface 12a (in the direction of the central axis of the opening) to fly the flying cleaning liquid. A surface that has a role of changing the traveling direction of the cleaning liquid in the direction of the inner surface of the gasket as an incident angle that causes a large expansion on the inner surface of the gasket with respect to the trajectory. “Surface that acts as an entrance angle” and “Surface that touches the top surface of the gasket of the lid” smoothly and “Surface that serves as an incidence angle that spreads the cleaning solution to the inner surface of the gasket more than the flight trajectory” For the inner cross-section (in the direction of the central axis of the opening) “the surface that becomes the incident angle that causes the flying cleaning liquid to spread widely on the inner surface of the gasket with respect to the flight trajectory” does not become long in the central 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 projecting 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 does not need to have three different curved surfaces as long as it can play the three roles described above, and functions even on two different curved surfaces.
Such a shape specializing unit will be referred to as a “change curve”.

Embodiment 3 FIG.
The seat in FIG. 4 is provided with a shape specializing part, convex R11a, for changing the traveling direction of the flying cleaning liquid 8 to an intended direction.
Further, the seat 11 and the cover plate 13 in FIG.
The manner in which the convex R11a and the change curve 14 change the traveling direction of the cleaning liquid in the intended direction is 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.

In FIG. 4, the most difficult portion to be cleaned is 12c, which is the upper end of the gasket inner surface 12a. The gasket inner side surface 12a and the lid 13 part 13a are the intersection points in the central cross section, and are recessed at a right angle that is the boundary between the acute angle and the obtuse angle (recessed from the inside of the tank toward the outside of the tank). Constitutes a corner.
In such a place, dirt is likely to stay and also a hotbed for various bacteria.
If the convex R11a and the change curve 14 are provided as shown in FIG. 4, the intersection 12c is bathed by the flow of two cleaning liquids from the horizontal direction and from below, and depending on the timing, the vicinity of the intersection 12c In some cases, the two streams collide, resulting in intense turbulence. In that case, the intersection 12c is naturally exposed to the turbulent flow.
It is generally known that violent turbulence contains energy exceeding the flow rate it can have, and has a high cleaning effect.
For this reason, the combined use of the convex R11a and the change curve 14 provides a cleaning effect equal to or greater than the “sum of the respective cleaning effects”.

Embodiment 4 FIG.
In FIG. 5, when a lining (or coating) 17 such as a fluororesin is applied to a metal seat 15 or lid 16, a portion where the lining surfaces having different angles intersect each other is a curved surface having a radius of about 1 to 20 mm ( Generally referred to as R). If there is no R here at the time of fixing of the film and it is a corner, it is due to a cause of fixing failure or the like.
For this reason, in an apparatus for constructing a fluororesin lining or the like, the seat cannot be formed into an ideal convex R shape, and the gasket inner side surface 12a is also located in a recessed position (outward as viewed from the center of the opening). End up.

The cover 16 is provided with “a change curve 16a having the same shape and effect as the change curve 14 in the second embodiment by carefully deciding the shape, so that the gasket inner side surface 12a and the portions of the lid 13 and the seat 11 leading to the gasket inner side surface 12a are also provided. Can be washed.
The cleaning performance improvement effect of the change curve 14 and its principle are as already described in the “second embodiment”. The change curve 16a is a shape specializing part 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 side surface 12a is located in a deep place, the cleaning liquid 8 is likely to decelerate until it reaches the gasket inner side surface 12a, or the flow rate is reduced due to the decelerating flow and not flowing due to deceleration.
In this case, it is more effective by setting the change curve so that the fluid flow path 18 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 flow rate as it becomes a bottleneck as it progresses and converges toward the back.

Embodiment 5 FIG.
FIG. 6 is a diagram of a valve with a convex R and a change curve and a seat flange 20 to which it is attached.
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 21 b and a valve seat 21 c provided at the tip of the valve stem 21 a exist as a “lid”.
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 interrupts or releases the flow of fluid injected or discharged into 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 as a sealing material.
Since these have elasticity, they are distorted when the container entering / exiting fluid 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 a convex R21d having the same shape and effect as the shape specializing part convex R11a described in the “first embodiment”.
The cleaning liquid that has collided with the convex R21d is part of the downward surface of the contact portion 22 by flowing over the curved surface 21e continuous above the convex R21d or re-flying depending on the traveling speed, as in the first embodiment. Colliding with 22 a, part of the surface flows through the surface 22 a toward the gap 23, finally reaches the gap 23, and the surface of the body to be bathed surrounding the gap 23 is cleaned.

Further, 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 section” 21 f.
The impinging cleaning liquid flows upward on the curved surface 21f and also flows upward on the surface 21g connected to the upper surface of the curved surface 21h, so that “a gap 24 having an opening in a direction in which the flying cleaning liquid 8 flows relatively easily”. Pass through the gap opening. Since the gap 24 is already saturated with a part of the other cleaning liquid 8, the cleaning liquid flowing 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. In other words, the surface 22b, which is the lower surface of the contact portion 22, is caused to flow over the gap 24.
However, for that purpose, 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 moving the valve stem 21a up and down allows, so that the surface 21g, the surface 22b, and the surface 21e. The space enclosed by must be narrowed 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.

A part of the flying cleaning liquid 8 is a part of the seat flange 20 and collides with a protrusion R20a having the same shape and effect as the shape-specifying section protrusion R11a described in the “first embodiment”.
As in “Embodiment 1,” the cleaning liquid that has collided with the convex R20a flows through the curved surface 20b connected to the upper side of the convex R20a, or re-flies when the traveling speed is high, and collides with the surface 21h that is a difficult-to-clean part. After that, the surface is washed 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 surface 12a and the surface 21i, which are difficult to clean, are effectively cleaned by the shape specializing portion protrusion R20a.

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 into the gasket inner surface 12a while cleaning the surface 21i which is a difficult-to-clean part.
As described above, the gasket inner side surface 12a and the surface 21i, which are difficult to clean, are effectively cleaned by the change curve 21j which is the shape specializing unit.

  In the change curve 21j, the curved surface corresponding to the change curve 14c in the change curve 14 is not connected to the “surface parallel to the surface in contact with the upper portion of the gasket 12” on the center side of the opening, but originally the change curve 14c. For the reason of the existence of the corresponding curved surface, it is not always necessary to connect to “a surface parallel to the surface in contact with the upper portion of the gasket 12”. The curved surface corresponding to the change curve 14c in the change curve 14 in the change curve 21k is continuous with a surface 21k that is inclined from a part of the valve 21 due to the requirement of bathing property.

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

Claims (4)

  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 sealing material provided between the seat and the closing member; The seat has a curved shape specialization in which the opening side inner surface of the seal member is tangent in a cross section passing through the center line of the opening and is convex toward the inside of the body to be bathed. Bath body with a part.   A bath body that has an opening and bathes 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 between the seat and the closing member And the seat has a straight portion continuous with the inner surface of the seal member in a cross section passing through the center line of the opening, and the straight portion is tangent, and the bath body A body to be bathed with a curved shape specializing portion that protrudes toward the inside.   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 sealing material provided between the seat and the closing member; The closing member includes a shape-specifying portion that protrudes toward the inside of the bathed body for guiding the fluid to the inner surface of the sealing material at a portion facing the inside of the bathed body. The body to be bathed.   The to-be-bathed body of Claim 3 which formed small the distance of the said shape specialization part provided in the said closure member, and the inner surface of the said seat toward the outer side from the centerline.

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