JP3141987U - Open / close valve for piping - Google Patents

Abstract

[PROBLEMS] To prevent the rotational operation of a rotary valve from being hindered, and to prevent the uniformity of a powder material flowing in a pipe line from leaking out of the pipe line. Provided is an open / close valve for a pipeline.
A cylindrical housing 8 disposed on the same axis as a cylindrical upstream pipe line, and a substantially cylindrical shape having substantially the same diameter as the housing 8, the axis intersecting with the axis of the housing 8. In this way, the downstream side pipe line 10 joined to the housing 8 and the inside of the joint part between the housing 8 and the downstream side pipe line 10 are provided so as to be rotatable around the axis L of the housing 8 and are part of a cylindrical shape And the rotary valve 14 rotates about the axis L of the housing 8 so that a part of the cylindrical shape communicates between the housing 8 and the downstream piping 10. And can be blocked.
[Selection] Figure 3

Description

  The present invention relates to an open / close valve for a pipeline, and more particularly to an open / close valve for a pipeline suitable for use when a powder material passes through a pipeline.

Conventionally, a rotating disc-shaped butterfly valve or a reciprocating plate has been used as an open / close valve for a piping passage through which powdered food such as wheat flour or powdered chemicals (hereinafter referred to as powder) is passed. Some of them use a sliding gate valve (see, for example, Patent Documents 1 and 2).
JP 2008-8394 A JP 2006-31462 A

  However, when a butterfly valve is used as the open / close valve of the conventional pipe line, the thickness of the butterfly valve itself remains in the pipe line when the butterfly valve is fully opened, which is an obstacle. Therefore, there has been a problem that the powdered material flowing in the pipeline is prevented from flowing uniformly.

  In addition, the powdered material is crushed finer than the original particle size by rubbing with the butterfly valve in the piping, or conversely, it is pressed against the butterfly valve and adheres to each other. There was a problem that it might become a large lump.

  In addition, when the butterfly valve is closed, a powder material is sandwiched between the peripheral portion of the butterfly valve and the inner wall of the pipe line, or between the peripheral portion of the butterfly valve and the inner wall of the rotation stop portion. Therefore, there is a problem that the butterfly valve may be prevented from being completely closed.

  At this time, there is also a problem that the butterfly valve may crush the powdered material and pulverize it finely, or conversely, it may be compacted and adhere to each other to form a lump larger than the original particle size. It was.

  Further, the butterfly valve has a rotation axis arranged in the diameter direction of the center of the disc-shaped valve body, and one of the semicircular portions on both sides of the rotation axis is downstream in the direction in which the powder flows. And the other semi-circular part is opened by rotating toward the opposite upstream side, so that the butterfly valve opening operation is performed while the butterfly valve is closed. In addition, there is a problem that the semicircular portion of the powder accumulated in the upstream pipe line is pushed back to the upstream side, which causes a burden when the butterfly valve is opened.

  Also at this time, the semicircular portion of the butterfly valve acts to push back a part of the powder material to the upstream side, thereby pressing and solidifying the powder material to become a lump larger than its original particle size. There was a problem that there was something.

  For this reason, when a butterfly valve is used as the open / close valve of the conventional pipe line, the rotation operation of the butterfly valve is hindered, or the butterfly valve causes variation in the particle size of the powder flowing in the pipe line. As a result, there is a problem that the uniformity of the powder may be deteriorated.

  In addition, in the case where the reciprocating plate-like slide gate valve is used instead of the butterfly valve as the conventional open / close valve of the pipe line, the slide gate valve is inserted into the pipe line, There is a problem that the powder in the pipe line may leak out from the slit-like hole for drawing out to the outside.

  Similarly to the above-described butterfly valve, the slide gate valve pushes the powder material by sandwiching the powder material between the slide gate valve itself and the inner wall of the pipe line during the closing operation. There has been a problem that the uniformity of the powder may be deteriorated by crushing and crushing finer than the original particle size.

  Therefore, in view of the above problems, the present invention can prevent the rotation operation of the rotary valve from being hindered, and the uniformity of the powder material flowing in the pipe line is deteriorated, It is an object of the present invention to provide an open / close valve for a pipeline that can prevent leakage outside the pipeline.

In order to solve the above-mentioned problem, an open / close valve for a pipeline according to the present invention is
A cylindrical housing disposed on the same axis as the cylindrical upstream pipe line;
A downstream pipe line formed in a substantially cylindrical shape having substantially the same diameter as the housing and joined to the housing so that its axis intersects the axis of the housing;
A rotary valve provided inside a joint portion between the housing and the downstream pipe line so as to be rotatable about the axis of the housing, and formed using a part of a cylindrical shape,
The rotating valve rotates about the axis of the housing, so that a part of the cylindrical shape can communicate or block between the housing and the downstream piping. It is a feature.

In addition, the open / close valve of the pipeline according to the present invention is
When the rotary valve rotates about a part of the downstream pipe line side of the joint part between the housing and the downstream pipe line around the axis of the housing, the rotary valve rotates within the joint part. It is characterized by having a closed wall formed so as to make it possible.

In addition, the open / close valve of the pipeline according to the present invention is
The opening of the rotary valve and the opening of the downstream pipe line communicate with each other on a second plane that is orthogonal to the first plane including both the axis of the housing and the axis of the downstream pipe line and includes the axis of the housing. It is characterized by being possible.

According to such an open / close valve of the pipeline of the present invention,
A cylindrical housing disposed on the same axis as the cylindrical upstream pipe line;
A downstream pipe line formed in a substantially cylindrical shape having substantially the same diameter as the housing and joined to the housing so that its axis intersects the axis of the housing;
A rotary valve provided inside a joint portion between the housing and the downstream pipe line so as to be rotatable around the axis of the housing, and formed using a part of a cylindrical shape,
By rotating the rotary valve about the axis of the housing, a part of the cylindrical shape can communicate or block between the housing and the downstream piping. ,
It is possible to prevent the rotation operation of the rotary valve from being hindered, and also to prevent the uniformity of the powder material flowing in the pipe line or the powder material from leaking out of the pipe line. it can.

In addition, according to the piping valve of the present invention,
When the rotary valve rotates about a part of the downstream pipe line side of the joint part between the housing and the downstream pipe line around the axis of the housing, the rotary valve rotates within the joint part. By having a closed wall formed to allow
The rotation of the rotary valve can be prevented from being obstructed, and the uniformity of the powder material flowing in the pipe line can be prevented and the powder material can be reliably prevented from leaking out of the pipe line. be able to.

In addition, according to the piping valve of the present invention,
The opening of the rotary valve and the opening of the downstream pipe line communicate with each other on a second plane that is orthogonal to the first plane including both the axis of the housing and the axis of the downstream pipe line and includes the axis of the housing. By being possible,
Both openings can be reliably opposed to each other.

Hereinafter, the best mode for carrying out an on-off valve for a pipeline according to the present invention will be specifically described with reference to the drawings.
FIG. 1 to FIG. 10 are views which are referred to in order to describe the open / close valve 2 of the pipe line according to the first embodiment of the present invention.

  As shown in FIGS. 1 and 2, the open / close valve 2 for the pipeline according to the present embodiment includes a main body 4 and a rotating body 6. The main body 4 of the on-off valve 2 includes a cylindrical housing 8, a cylindrical downstream piping 10 that is joined to and communicates with the housing 8, and a closing wall 12.

  Further, as shown in FIG. 3, the rotary body 6 of the on-off valve 2 is a rotation having a vertical pipe 18 having an axis L extending in the vertical direction and a half pipe 20 formed by using a part of a cylindrical shape. The valve 14 and the fitting part 16 fitted to the housing 8 are provided. In the opening / closing valve 2, the upper end portion of the rotary valve 14 of the rotating body 6 is disposed so as to face the downstream end portion of the upstream pipe line of the same axis (not shown), and from the upstream pipe line (not shown). The supplied powder material flows through the inside thereof in the downstream in the axial direction.

  The rotating body 6 has a fitting portion 16 formed in a cylindrical shape with a low height, and a vertical pipe 18 of the rotary valve 14 is disposed on the same axis on the radially inner side of the fitting portion 16. The upper ends of the vertical pipe 18 and the fitting portion 16 of the rotating body 6 are connected to each other via the upper plane portion 17 and are integrally formed.

  The rotating body 6 is configured so that the upper end portion of the housing 8 in the main body portion 4 is inserted between the outer periphery of the vertical pipe 18 and the inner periphery of the fitting portion 16 in the rotary valve 14. And is rotatably fitted. Further, gear teeth (not shown) are provided on the outer peripheral surface of the fitting portion 16 of the rotating body 6. The gear teeth (not shown) of the fitting portion 16 mesh with the teeth of other drive gears (not shown) so that the rotating body 6 is driven to rotate about the axis L of the housing 8 as the rotation center. It has become.

  FIG. 4 is a top view of the main body 4 of the on-off valve 2, and FIG. 5 is a cross-sectional view of the main body 4 shown in FIG.

  As shown in FIG. 5, the downstream pipe line 10 of the main body 4 is formed by a cylindrical tube having a diameter that is the same as the diameter of the housing 8. The downstream piping 10 is disposed such that its axis b intersects the axis L of the housing 8 at a point X on the axis L.

  Moreover, as shown in FIG.4 and FIG.5, as for the downstream pipe line 10, the edge of the semicircular part of the cylindrical side wall is shown in FIG.4 and FIG.5 in the edge part in the housing 8 side in the direction where the axis line b is extended. It is joined to the side wall of the semicircular portion of the housing 8.

  That is, as shown in FIG. 5, the downstream pipe line 10 has an edge on the housing 8 side of the side wall of the semicircular portion in the upper left range from the axis b in FIG. 5 among the cylindrical side walls. , And joined to the side wall of the housing 8.

  Further, the downstream pipe line 10 has a first plane in which the side wall of the semicircular portion on the lower right side in FIG. 5 of the axis line b includes both the axis line L of the housing 8 and the axis line b of the downstream pipe line 10. In a second plane (in FIG. 5, a plane extending in a direction perpendicular to the paper surface including the axis L) that is orthogonal to the reference numeral in the drawing and including the axis L of the housing 8, it is joined to the closing wall 12. It has become.

  That is, as shown in FIG. 6, the downstream piping 10 is included in a virtual plane F extending in a direction parallel to the paper surface of FIG. 6, and is generally formed in the lower half of the vertically long elliptical ring shape. The joining surface 10a to be joined is joined to the closing wall 12 as shown in FIGS.

  Further, as shown in FIGS. 5 and 6, the downstream pipe 10 has a pin 90 (see FIGS. 3 and 9) described later at a position where the lower end portion of the joint surface 10 a intersects the axis L of the housing 8. ) Is formed in the pin hole 80 for fitting.

  As shown in FIG. 6, the pin hole 80 is formed so that its axis is on the same line as the axis L of the housing 8 and opens to the housing 8 side of the main body 4. As shown in FIG. 5, the downstream side pipe line 10 surrounds the inner periphery of the pin hole 80, and only the thick part integral with the downstream side pipe line 10 has a closed wall 12 rather than the joint surface 10 a. The closed wall 12 is formed so as to avoid that portion.

  Next, the closing wall 12 of the main body 4 has a joint surface having the same shape as the joint surface 10a in order to join with the joint surface 10a of the downstream-side piping 10 shown in FIG. Then, as shown in FIG. 5, the closed wall 12 rotates around the axis L of the housing 8 with the planar shape of the joint surface 12 a having the same shape as the joint surface 10 a of the downstream piping 10. Of the rotating body formed by this, it is formed as a shape portion formed only on the opposite side of the downstream pipe line 10 from the joint surface 12a with the joint surface 10a of the downstream pipe line 10.

  Further, in the direction in which the axis L of the housing 8 extends (vertical direction in FIG. 5), the horizontal surface of the end of the closing wall 12 on the housing 8 side is joined to the horizontal lower end surface of the half of the housing 8 on the closing wall 12 side. ing.

  FIG. 7 is a side sectional view of the rotating body 6 of the opening / closing valve 2. FIG. 8 is a front view of the rotator 6 shown in FIG. As shown in FIGS. 7 and 8, the rotary valve 14 of the rotating body 6 is formed integrally with the vertical pipe 18 that opens in the vertical direction and extends in the vertical direction. It is provided with a half pipe 20 which is arranged so as to be inclined.

  Since the vertical pipe 18 of the rotary valve 14 in the rotating body 6 shares the same axis L as the axis L of the housing 8 when fitted in the housing 8 of the main body 4 as shown in FIG. The vertical pipe 18 and the half pipe 20 rotate around the axis L thereof.

  Further, as shown in FIG. 7, the half pipe 20 of the rotary valve 14 is formed in a shape constituted by a part of a virtual cylindrical body (not shown) arranged at an inclination. Here, the virtual cylinder (not shown) is joined to the lower portion of the vertical pipe 18 so that the axis b thereof coincides with the axis b of the downstream side piping 10 in the main body 4 as shown in FIG. It is assumed.

  As shown in FIG. 7, the half pipe 20 of the rotary valve 14 generally has such a virtual cylinder (not shown), and the side wall of the semicircular portion on the lower right side in FIG. 7 is perpendicular to a virtual plane M (a first plane coinciding with the plane of FIG. 7) including both the axis L of the housing 8 and the axis b of the downstream piping 10, and includes the axis L of the housing 8. It is parallel to the plane F (second plane orthogonal to the paper surface of FIG. 7), and is separated from the virtual plane F by the length of half the width of the scraping portion 24 described later, on the left side in FIG. It is cut in the virtual cutting plane S, and is formed in a shape such that the left side in FIG.

  Here, in FIG. 7, the two-dot chain line indicating the virtual cut surface S overlaps the solid line indicating the shape on the left side of the width of the scraping portion 24 of the rotating body 6 in order to prevent complication of the drawing. Inside, it is not shown.

  Thereby, as shown in FIG. 8, the half pipe 20 of the rotary valve 14 has a cut surface formed by cutting a virtual cylindrical body (not shown) with a virtual cutting surface S parallel to the paper surface of FIG. The surface of the scraping portion 24 that coincides with the shape of the lower half of the vertically elongated elliptical ring shape, and the inner space surrounded by the scraping portion 24 is connected to the connection port. 22 is configured. The connection port 22 of the half pipe 20 has a substantially similar shape whose shape is slightly smaller than the shape of the joint surface 10a of the downstream side pipe line 10 shown in FIG.

  Moreover, as shown in FIG.7 and FIG.8, the strip | belt-shaped scraping part 24 is formed in the rotary valve 14 so that the outer periphery of the connection port 22 of the half pipe 20 may be followed. The scraping portion 24 is formed to have a certain width in the left-right direction in FIG.

  Further, as shown in FIGS. 7 and 8, the vertical pipe 18 of the rotary valve 14 is formed with a strip-shaped partition portion 26 that makes one round on the outer circumferential surface in the circumferential direction. The scraping portion 24 of the rotary valve 14 is formed such that both end portions in the length direction (the direction along the circumferential direction of the connection port 22 of the half pipe 20) are connected to the partition portion 26 in a T shape. The scraping portion 24 and the partition portion 26 are formed integrally with the rotary valve 14.

  The rotary valve 14 is located at the lowermost end position in the center in the length direction of the scraping portion 24 (the direction along the circumferential direction of the connection port 22 of the half pipe 20), as shown in FIGS. A pin hole 82 for rotatably fitting the pin 90 shown in FIG. 3 is formed at a position corresponding to the pin hole 80 of the downstream side pipe line 10 of the main body 4.

  The on-off valve 2 is a diagram in which the rotary valve 14 of the rotary body 6 is rotated 90 degrees about the axis L of the housing 8 from the state where the rotary valve 14 is in communication with the downstream pipe line 10 of the main body 4 as shown in FIG. 9, after passing through the state shown in FIG. 9, the rotary valve 14 is surrounded by the half pipe 20 and the closing wall 12 in a state where it is further rotated 90 degrees (a state rotated 180 degrees from the state shown in FIG. 3). The internal space and the internal space (on the side opposite to the closing wall 12) of the downstream side pipe line 10 are blocked.

  The height of the scraping section 24 of the rotary valve 14 shown in FIGS. 7 and 8 from the half pipe 20 and the height of the partition section 26 from the vertical pipe 18 are respectively determined by the scraping section 24 and the partition. Since the gaps in the opposing direction between each of the portions 26 and the closing wall 12 and the housing 8 (see dimension c1 in FIG. 9) are set to about 0.1 mm, the scraping portion 24 is configured to scrape off the powder that is about to adhere to the inside of the downstream side piping 10 or the like.

  In the open / close valve 2 for the pipe line according to this embodiment, as shown in FIG. 3, the half pipe 20 of the rotary valve 14 of the rotating body 6 communicates with the downstream pipe line 10 of the main body 4. In this state, since the half pipe 20 forms a part of the pipe line, the powder can smoothly pass through the pipe 20 in the pipe pipe.

  When the butterfly valve closes like a conventional pipe line opening / closing valve using a butterfly valve, the butterfly valve and the inner wall of the butterfly valve, and the butterfly valve circumference and its circuit Since the powdered material is sandwiched between the inner wall of the movement stop portion and the butterfly valve is not inhibited from being completely closed, the operation of the rotary valve 14 of the on-off valve 2 is inhibited. Can be prevented.

  For this reason, according to the on-off valve 2 for the pipe line according to the present embodiment, it is possible to prevent the rotation operation of the rotary valve 14 from being hindered, and the uniformity of the powder material flowing in the pipe line. It is possible to prevent deterioration and leakage of powder from the piping.

  In addition, according to the on-off valve 2 according to the present embodiment, unlike the conventional on-off valve of a pipe line using a butterfly valve, the plate thickness portion of the butterfly valve itself does not remain in the pipe line. It is possible to prevent the powdered material flowing in the pipe line from obstructing the uniform flow.

  In addition, the powdered material is crushed finer than the original particle size by rubbing with the butterfly valve in the piping, or conversely, it is pressed against the butterfly valve and adheres to each other. A large lump can be prevented.

  Further, unlike the butterfly valve, the opening / closing operation of the rotary valve 14 of the rotating body 6 does not act so as to push back the powder on the upstream side thereof, so that the powder is crushed and further pulverized. It is possible to prevent it from being pressed or consolidating.

  Also, according to the on-off valve 2 according to the present embodiment, unlike the conventional on-off valve of the piping line using a slide gate valve, it is not necessary to pull out the rotary valve 14 of the rotating body 6 to the outside. Therefore, it is possible to prevent the powder from leaking out from the inside of the pipeline through the opening.

  Next, FIG. 11 is a figure referred in order to demonstrate the opening / closing valve 30 of the piping line which concerns on the 2nd Embodiment of this invention. The same parts as those of the open / close valve 2 of the pipeline according to the first embodiment will be described using the same reference numerals, and redundant description of the same configuration will be omitted.

  As shown in FIG. 11, the opening / closing valve 30 for the pipeline according to the present embodiment includes a rotating body 32 instead of the rotating body 6 of the opening / closing valve 2 according to the first embodiment. The rotary body 32 includes a rotary valve 34 instead of the rotary valve 14 in the rotary body 6 of the on-off valve 2 according to the first embodiment.

  The rotary valve 34 of the rotary body 32 includes a vertical pipe 36 and a half pipe 38. Similar to the vertical pipe 18 of the rotary valve 14 in the on-off valve 2 according to the first embodiment, the vertical pipe 36 of the rotary valve 34 is formed in a cylindrical shape that opens in the vertical direction and extends in the vertical direction. .

  Further, the half pipe 38 of the rotary valve 34 has a connecting port 39 in plan view in which the connection port 22 of the half pipe 20 of the rotary valve 14 in the on-off valve 2 according to the first embodiment (see FIG. 8). ) In the same shape as the planar shape.

  On the other hand, as shown in FIG. 11, the half pipe 38 of the rotary valve 34 has a three-dimensional shape that is formed by rotating the plane shape of the connection port 39 about the axis L of the housing 8. The body is cut in the same virtual cutting plane S as the virtual cutting plane S shown in FIG. 7 and the left side in FIG. 7 is removed from the virtual cutting plane S.

  Further, a scraping portion 24 similar to the scraping portion 24 of the rotary valve 14 according to the first embodiment is formed on the outer periphery of the connection port 39 of the rotary valve 34, and the outer periphery of the vertical pipe 36 is formed. A partition portion 26 similar to the partition portion 26 according to the first embodiment is formed above.

  Thereby, the size of the gap in the facing direction between the outer peripheral surface of the half pipe 38 of the rotary valve 34 and the inner peripheral surface of the closing wall 12 of the main body portion 4 is centered on the axis L of the rotary valve 34. As seen along the horizontal circumferential direction, the both end portions of the rotary valve 34 in the horizontal circumferential direction (the portions of the scraping portion 24) are 0.1 mm, which is the same as that of the rotary valve 14 according to the first embodiment. (Refer to dimension c1 in FIG. 9).

  Further, as shown in FIG. 11, the outer peripheral surface of the half pipe 38 of the rotary valve 34 and the main body portion are arranged at the intermediate portion between the both ends in the horizontal circumferential direction on the outer peripheral face of the half pipe 38 of the rotary valve 34. The size of the gap in the opposite direction to the inner peripheral surface of the four closed walls 12 (dimension c2 in FIG. 11) is 4 of the particle size of the powder passing through the opening / closing valve 30 based on an empirical rule. It is set to about twice as long.

  According to the pipe opening / closing valve 30 according to the present embodiment, it is possible to prevent the rotation operation of the rotary valve 34 from being hindered, as in the first embodiment. It is possible to prevent the uniformity of the powder material flowing in the passage and to prevent the powder material from leaking out of the piping.

  In addition, according to the opening / closing valve 30 for the pipe line according to the present embodiment, a space beyond a certain gap is not formed between the half pipe 38 of the rotating body 32 and the closing wall 12 of the main body 4. Therefore, it is possible to prevent the powder from staying between the half pipes 38 and the closed wall 12.

Next, FIGS. 12 to 14 are views which are referred to for explaining the open / close valve 40 of the pipe line according to the third embodiment of the present invention.
As shown in FIG. 12, the opening / closing valve 40 according to the present embodiment is similar to the opening / closing valve 30 of the pipe line according to the second embodiment, instead of the main body 4 and the rotating body 32. A main body 42 and a rotating body 44 are provided.

  The main body portion 42 of the on-off valve 40 includes a closing wall 46 that is different from the closing wall 12 of the main body portion 4 according to the second embodiment. The rotating body 44 includes a rotary valve 48. The rotary valve 48 includes a half pipe 50 different from the half pipe 38 according to the second embodiment.

  Each of the closing wall 46 of the main body 42 and the half pipe 50 of the rotary valve 48 in the rotating body 44 has a shape within the range of the dimension m in FIG. 12 in the direction in which the axis L of the housing 8 extends. The three-dimensional shapes of the corresponding portions of the closing wall 12 (see FIG. 11) and the half pipe 38 according to the second embodiment are formed by replacing them with inverted hollow conical shapes.

  Further, as shown in FIG. 12, each of the closing wall 46 and the half pipe 50 is within the range of the dimension n in FIG. 12, and the closing wall 12 and the half pipe 38 according to the second embodiment. It is formed in the same shape as the corresponding portion. When the respective shapes of the closing wall 46 and the half pipe 50 are determined in the design stage, the boundary between the range indicated by the dimension m and the range indicated by the dimension n in FIG. 12 can be arbitrarily set.

  Further, as shown in FIGS. 12 and 13, the main body portion 42 of the on-off valve 40 is provided with a downstream side pipe line 52 different from the downstream side pipe line 10 of the main body part 4 in the on-off valve 30 according to the second embodiment. It has.

  The downstream piping 52 includes a cylindrical portion 54 and an expansion portion 56 that expands a cross-sectional shape perpendicular to the axis b of the cylindrical portion 54. The extended portion 56 is formed by joining two symmetrical triangular plates 58 as shown in FIG. 13, and as shown in FIG. 12, a hollow portion in the range of the dimension m in FIG. It arrange | positions so that it may oppose and oppose to the opening part.

  As a result, as shown in FIG. 14, the downstream side piping 52 has a joining surface 52 a that is formed by joining the end surfaces of the cylindrical portion 54 and the expansion portion 56 on the side of the closing wall 46 and is joined to the closing wall 46. As shown in FIG. 13, it is formed in a shape corresponding to the planar shape of the joint surface of the closing wall 46.

  According to the on-off valve 40 according to the present embodiment, it is possible to prevent the rotation operation of the rotary valve 48 from being hindered, as in the first and second embodiments. It is possible to prevent the uniformity of the powder material flowing in the passage and to prevent the powder material from leaking out of the piping.

  Further, according to the pipe opening / closing valve 40 according to the present embodiment, between the half pipe 50 of the rotating body 44 and the closing wall 46 of the main body 42, as in the second embodiment. Since no space beyond a certain gap is formed, the powder material can be prevented from staying between the half pipes 50 and the closing wall 46.

  In addition, according to the pipe opening and closing valve 40 according to the present embodiment, the half pipe 50 of the rotating body 44 is inclined at the end opposite to the housing 8 of the main body portion 42 at the downstream side pipe path. Since it is formed so as to be close to the axis b of 52, it is possible to prevent the speed of the powder material flowing in the piping path from being reduced.

  In the pipe opening and closing valves 2, 30, and 40 according to the first to third embodiments, powders are passed, but other than powders are allowed to pass. It may be. For example, fluids such as liquid and gas, or granular materials such as beans and granular medicines may be passed.

  Further, in the open / close valves 2, 30, 40 of the pipe line according to the first to third embodiments, the scraping part 24 and the partition part 26 are integrally formed on the rotary valves 14, 34, 48. However, it may be formed and attached separately. Moreover, the scraping part 24 and / or the partition part 26 may not be provided.

It is a side view which shows the on-off valve 2 which concerns on the 1st Embodiment of this invention. It is a top view of the on-off valve 2 shown in FIG. It is AA arrow sectional drawing of the on-off valve 2 shown in FIG. It is a top view of the main-body part 4 in FIG. FIG. 5 is a cross-sectional view of the main body section 4 shown in FIG. It is CC sectional view taken on the line of the main-body part 4 shown in FIG. It is side surface sectional drawing of the rotary body 6 in FIG. It is a front view of the rotary body 6 shown in FIG. FIG. 3 is a cross-sectional view taken along line AA of the on-off valve 2 shown in FIG. FIG. 3 is a cross-sectional view taken along line AA of the opening / closing valve 2 shown in FIG. It is side surface sectional drawing which shows the on-off valve 30 which concerns on the 2nd Embodiment of this invention. It is side surface sectional drawing which shows the on-off valve 40 which concerns on the 3rd Embodiment of this invention. It is the EE arrow directional view of the on-off valve 40 shown in FIG. It is side surface sectional drawing of the main-body part 42 in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 On-off valve 4 Main-body part 6 Rotating body 8 Housing 10 Downstream piping 10a Joint surface 12 Closing wall 12a Joint surface 14 Rotary valve 16 Fitting part 17 Upper plane part 18 Vertical pipe 20 Half pipe 22 Connection port 24 Scraping part 26 Partition 30 OPEN / CLOSE VALVE OF PIPE CHANNEL 32 Rotating body 34 Rotating valve 36 Vertical pipe 38 Half-split pipe 39 Connection port 40 Open / close valve 42 Main body 44 Rotating body 46 Closing wall 48 Rotary valve 50 Half-split pipe 52 Downstream piping 52 a Joint surface 54 Cylindrical part 56 Expansion part 58 Triangular plate 80,82 Pin hole 90 Pin

Claims (3)

A cylindrical housing disposed on the same axis as the cylindrical upstream pipe line;
A downstream pipe line formed in a substantially cylindrical shape having substantially the same diameter as the housing and joined to the housing so that its axis intersects the axis of the housing;
A rotary valve provided inside a joint portion between the housing and the downstream pipe line so as to be rotatable about the axis of the housing, and formed using a part of a cylindrical shape,
The rotating valve rotates about the axis of the housing, so that a part of the cylindrical shape can communicate or block between the housing and the downstream piping. An open / close valve for the pipeline.   When the rotary valve rotates about a part of the downstream pipe line side of the joint part between the housing and the downstream pipe line around the axis of the housing, the rotary valve rotates within the joint part. The opening / closing valve for a pipeline according to claim 1, further comprising a closing wall formed so as to make possible.   The opening of the rotary valve and the opening of the downstream pipe line communicate with each other on a second plane that is orthogonal to the first plane including both the axis of the housing and the axis of the downstream pipe line and includes the axis of the housing. The open / close valve for a pipeline according to claim 1 or 2, characterized in that it is possible.

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