JP2007315983A - Site flow with electric windshield wiper device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a site flow with an electric windshield wiper device, having no failure/damage in a simple configuration by making a lateral width small, facilitating arranging at a connection part between pieces of piping, and will hardly influence the flow of fluid. <P>SOLUTION: The site flow (10) for observing the state of the inside of the piping (2) in which the fluid flows includes a transparent cylindrical short cylinder (12), arranged in between parts (4) of piping ends opposed for coupling connection of the pieces of the piping and for forming a flow passage for passing the fluid at the center part; and a wiper body (14) that rotates, while sliding on the inner peripheral face of the short cylinder due to the fluid flow. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a site flow with a wiper device provided with a wiper device for preventing dirt from adhering to the site flow for directly visually checking the state of a fluid such as water flowing in a pipe.

  The site flow is for visually confirming the state of a fluid such as water flowing in the pipe and the state of gas mixture from the outside, and is generally arranged at a connection point between the pipes. FIG. 10 shows a front view of a conventionally used site flow. The site flow (40) is formed on a cylindrical body (43) having an inner diameter similar to that of the pipe (2) indicated by a broken line and having flanges (41) at both ends, and on the side of the body. And a transparent window portion (45). The pipe and the sight flow are connected by fastening the flange (4) at the end of the pipe and the flanges at the both ends of the sight flow with bolts and nuts (47) after sandwiching packing (not shown).

  Here, in the general site flow as shown in the figure, dirt such as water stains adheres to the window as time passes, and it becomes impossible to visually check the state of the fluid in the pipe from the window. there were. Conventionally, in such a case, the site flow is removed from the connection portion between the pipes and cleaned, but this cleaning requires a lot of labor. This disassembly and cleaning had to be performed regularly.

Therefore, in recent years, various site flows provided with a wiper device for removing dirt attached to the window have been developed. In the sight flow with wiper device of the internal structure shown in FIG. 11, the impeller attached to the window portion rotates by the momentum of the water flow, and this is in sliding contact with the inner surface of the window portion, thereby preventing dirt from adhering to the inner surface of the window portion. In addition, the attached dirt is scraped off. Further, in the “omnidirectional fluid viewing device” of Patent Document 1, the dirt attached to the window formed over the entire circumference of the pipe is scraped off by the impeller provided in the pipe. Technology is disclosed.
Registered Utility Model No. 3056571

  However, the site flow or the like with the wiper device of FIG. 11 has a large width in the fluid flow direction, and there are cases where the arrangement is limited when it is arranged at the connection point between the pipes. In addition, since the impeller extends greatly in the piping path, the flow of the fluid may be affected, and if a large pressure is temporarily applied to the fluid or impurities are mixed into the fluid, the impeller is likely to be damaged. There was a problem. The same applies to the “omnidirectional fluid viewing device” of Patent Document 1.

  The present invention has been devised in view of the above problems, and its purpose is small in width and easy to be arranged at a connection point between pipes, and has almost no influence on the flow of fluid. The object is to provide an inexpensive site flow with a wiper device that is less likely to fail or break.

  In order to achieve the above object, the present invention provides a site flow (10) for observing a state in a pipe (2) through which a liquid flows, and is provided at the end of a pipe facing each other for connection between pipes. A transparent short cylindrical body (12) disposed between the flange portions (4) and having a flow path for allowing fluid to pass through the center, and the inside of the short cylindrical body by the fluid flow And a wiper body (14) that rotates while sliding in contact with a peripheral surface.

  Here, the sight flow with a wiper device of the present invention is sandwiched between the short cylinder (12) and the flange (4) at the end of the pipe (2), and is an opening for allowing fluid to pass through. A doughnut-shaped disc-shaped clamping portion (16a) formed with a guide rail portion (16b) formed on the inner periphery of the clamping portion, and the wiper body (14 ) Is arranged between a pair of clamping bodies and is rotated along the guide rail portion by the flow of fluid, or is formed in an annular shape on the inner peripheral surface in the vicinity of both ends of the short cylinder (12). A concave groove (18) is formed, and the wiper body (14) has leg portions (14a) at both ends loosely fitted in the concave groove, and rotates along the concave groove by the flow of fluid. And

  The guide rail portion (16b) of the pinching body (16) is formed to bend so as to form a constant gap (G) with the inner peripheral surface of the short cylindrical body (12). It is preferable that the wiper body (14) is attached so that the leg portions (14a) at both ends thereof are loosely fitted in the gaps of the opposing guide rail portions.

  Further, the wiper body (14) extends in the fluid flow direction, and the leg portions (14a) at both ends are attached to the guide rail portion (16b) or the concave groove (18), so that the short cylinder body is provided. A base portion (14b) that slides in contact with the inner peripheral surface of (12) and a plurality of wing portions (14c) that extend into the fluid from the base portion and generate a rotational force by flowing the fluid. The inner circumferential surface of the short cylinder by generating a rotational force by flowing the fluid through the wing (14c) formed in the axial direction and extending at an inclination with respect to the fluid flow direction. A base part (14b) that slides in contact with the ring, and an annular frame-like support frame (supporting frame) that is formed so as to support both ends of the base part and along the guide rail part (16b) or the concave groove (18). 22).

  According to the present invention, the transparent short cylinder disposed between the flanges of the pipe ends facing each other is used as a viewing window for observing the fluid flowing in the pipe, and the inner circumference of the short cylinder is determined by the flow of the fluid. By providing a wiper body that rotates while sliding in contact with the surface, it is possible to prevent adhesion of dirt to the inner peripheral surface of the short cylindrical body, and of course, the width in the flow direction is small, and it is arranged at the connection point between the pipes. In some cases, a site flow with a wiper device that is difficult to restrict the arrangement is provided.

  In addition, the sight flow with a wiper device according to the present invention does not greatly extend an impeller such as a propeller into the piping path, and only the wing or base of the wiper body passes the fluid. In the case where impurities are mixed into the fluid, the wiper portion is hardly damaged.

  The site flow with a wiper device according to the present invention is characterized in that the structure is simple and the manufacturing cost is low, and the failure is small.

The site flow with wiper device of the present invention is for visually observing the state of the fluid flowing inside the pipe from the outside, and between the flange portions formed at both ends of the pipe to connect the pipes together. It is arrange | positioned and fixed. The flange portion is formed with a plurality of bolt holes (six locations) for connecting and connecting the pipes.
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, about each site | part of the same structure in each Example, the overlapping description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  FIG. 1 is an exploded perspective view for explaining the structure of a site flow with a wiper device according to the first embodiment, FIG. 2 is a perspective view of the site flow with a wiper device after assembling each component, and FIG. FIG. 4 is an XX sectional view in FIG.

  As shown in FIGS. 1 to 4, the site flow 10 with the wiper device of the present embodiment includes a transparent short cylinder 12 for visually observing the inside of the pipe 2 from the outside, the short cylinder 12 and the pipe 2. And a wiper body 14 that rotates while sliding on the inner peripheral surface of the short cylindrical body 12 by the flow of fluid. In addition, the packing 21 is inserted | pinched between the flange part 4 and the clamping body 16, and between the clamping body 16 and the short cylinder body 12 (refer FIG. 3).

  The short cylinder 12 is a transparent cylindrical short cylinder made of acrylic or the like in which a flow path for allowing fluid to pass through the center portion, and the outer diameter thereof is the same as the outer diameter of the flange portion 4. The inner diameter is slightly larger than the inner diameter of the pipe 2, and the wall thickness is approximately the same as the radial length of the flange portion 4. Specifically, for example, when the inner diameter of the pipe 2 is 10 cm, the outer shape of the flange portion 4 is 14 cm, and the thickness of the pipe 2 is 1 cm, the short cylinder 12 has an outer diameter of 14 cm and an inner diameter of 11 cm. The axial length of the short cylinder 12 can be appropriately changed, but is preferably about 10 cm or less. The short cylinder 12 is formed with a plurality of bolt holes for passing the bolts 23 in the axial direction at positions corresponding to the bolt holes of the flange portion 4.

The pinching body 16 is manufactured by processing a metal such as aluminum having a thickness of about 2 mm, and includes a donut-shaped disc-shaped pinching portion 16a and an opening portion 16a in which an opening for allowing fluid to pass is formed. It consists of the guide rail part 16b formed in the periphery. When the short cylinder 12 has the above dimensions, the pinching portion 16a has an outer diameter of 14 cm and an opening diameter of 10 cm. The guide rail portion 16b bends 90 degrees at the inner peripheral edge of the pinching portion 16a, and in the fluid flow direction (axial direction) so as to form a constant gap G between the guide rail portion 16b and the inner peripheral surface of the short cylindrical body 12. It is formed in an annular shape extending about 1 cm (see FIGS. 1 and 3).
Here, the clamping body 16 is attached between the flange portions 4 at the pipe end portions so that the guide rail portions 16b bent at both ends of the short cylindrical body 12 face each other. Note that a plurality of bolt holes for passing the bolts 23 are formed in the pinching portion 16 a at positions corresponding to the bolt holes of the flange portion 4.

The wiper body 14 shown in an enlarged perspective view in FIG. 5 has an I-shape that extends in the fluid flow direction and has leg portions 14a for attachment to the guide rail portions 16b of the pinching body 16 at both ends. And a plurality of wing portions 14c extending about 1 cm from the base portion 14b of the portion excluding the leg portions 14a. A rubber spatula 25 suitable for wiping off dirt is attached to the surface of the base portion 14b on the side opposite to the wing portion over the entire length in the axial direction.
The wiper body 14 is attached so that the leg portions 14a at both ends thereof are loosely fitted into the gap G between the pair of opposing guide rail portions 16b (see FIG. 3). The wiper body 14 attached to the short cylinder body 12 and the pinching body 16 has its wings 14c inclined in a certain direction (about 15 to 30 °) with respect to the fluid flow direction. The wing portion 14c applies a rotational force to the wiper body 14 by passing a part of the fluid passing through the short cylinder body 12, and the wiper body 14 thereby has an inner peripheral surface of the short cylinder body 12 along the guide rail portion 16b. Slidably rotates.
Here, in order to more smoothly rotate the wiper body 14 along the guide rail portion 16b, it is also preferable to provide a bearing (not shown) on the leg portion 14a of the base portion 14b.
In this embodiment, the number of wiper bodies 14 is one, but it is also possible to attach two or more wiper bodies to the guide rail portion 16b. In this case, since the wiper bodies 14 are independent from each other, even when the rotation of one wiper body 14 is hindered by an obstacle such as dust trapping, the adjacent wiper bodies 14 collide with the impact to cause impact. It is expected that the obstacle will be removed and rotation will start again. In addition, when attaching two or more wiper bodies 14, it is also preferable to arrange the spatula 25 alternately at equal intervals in the axial direction of the base portion 14b so that the spatula 25 of each wiper body 14 wipes off dirt in a slit shape. .

  FIG. 6 shows a modification of the wiper body 14 of the present embodiment. As shown in the figure, the wiper body 14 has an annular frame-shaped support frame body 22 in which both ends of three base portions 14b arranged at equal intervals on the circumference are loosely fitted in the gap G of the guide rail portion 16b. It is a structure supported by. In this structure, since the wiper bodies 14 are arranged at equal intervals, the wiper bodies 14 rotate smoothly in a balanced manner on the inner peripheral surface of the short cylinder body 12.

  According to the site flow 10 with the wiper device of the present embodiment described above, it is possible to prevent dirt from adhering to the inner peripheral surface of the short cylindrical body 12 and can be appropriately changed without depending on the width in the flow direction. Thus, the degree of freedom of the arrangement can be improved even when the pipes 2 are arranged at the connection points. Further, since the wing portion 14c of the wiper body 14 only passes the fluid, it hardly affects the flow of the fluid, and the extension portion is small, so that even when impurities are mixed into the fluid, the wiper portion is damaged. Almost never occurs. Further, the site flow 10 with the wiper device according to the present embodiment has a simple structure, so that the manufacturing cost is low, and therefore, the failure thereof is small.

FIG. 7 shows a perspective view of a wiper body used in the site flow with the wiper device of the second embodiment.
The site flow with the wiper device of the present embodiment is different from the site flow with the wiper device of the first embodiment in the structure of the wiper body, but the other parts are the same. Therefore, only the wiper body will be described below.

The wiper body 14 shown in the figure has an annular frame-like support in which both ends of three base portions 14 b arranged at equal intervals on the circumference are loosely fitted in the gap G of the guide rail portion 16 b of the pinching body 16. The structure is supported by the frame body 22, and the base portion 14 b is attached to the support frame body 22 so as to be inclined by about 15 to 30 ° with respect to the fluid flow direction. The base portion 14b is formed with a series of wing portions 14c extending in the axial direction and extending inward in the radial direction by about 1 cm over its entire length. Further, a rubber spatula 25 suitable for wiping off dirt over the entire length in the axial direction is attached to the base portion 14b on the surface opposite to the wing portion 14c.
Of course, it is possible to support the base portion 14b by the leg portion and rotate it independently without providing the support frame body 22 as in the first embodiment.

  In this embodiment, since the base portion 14b and the series of wing portions 14c are integrally formed, the structure is further simplified, and the manufacturing cost can be further reduced. Moreover, since the wing | blade part 14c is formed in series and integrally with the base part 14b, the intensity | strength of the wing | blade part 14c increases and the damage can further be reduced.

FIG. 8 is an exploded perspective view of the site flow with the wiper device of the third embodiment, and FIG. 9 is an axial sectional view thereof.
The site flow 10 with the wiper device according to the present embodiment eliminates the pinching body 16 that is a component of the site flow 10 with the wiper device according to the first embodiment and the second embodiment. A transparent short cylinder 12 for visually observing the inside of the pipe 2 from the outside, a wiper body 14 that rotates while sliding on the inner peripheral surface of the short cylinder 12 by a fluid flow, a flange portion 4 and a short cylinder It is comprised from the packing 21 inserted | pinched between.

  The short cylindrical body 12 of the present embodiment supports this by loosely fitting both ends of the wiper body 14 to the inner peripheral surface in the vicinity of both ends (including the corners) of the short cylindrical body of the first and second embodiments. An annular groove 18 is formed symmetrically. The concave groove 18 has a depth of about 1 cm and is formed in an L shape so that the attached wiper body 14 is not detached.

  The wiper body 14 has an I-type base 14b as in the first embodiment, and a plurality of I-type bases 14b supported by an annular frame-shaped support frame 22 as in the first embodiment. Alternatively, as in the second embodiment, the base portion 14b may be inclined with respect to the fluid flow direction and attached to the support frame 22, and any of a series of blade portions 14c formed integrally with the base portion 14b may be employed. However, the leg portion 14a and the support frame body 22 need to be formed by extending and bending from the end of the base portion 14b so as to be loosely fitted and locked in the concave groove 18 formed in the short cylindrical body 12. . The wiper body 14 in which the leg portions 14a at both ends are loosely fitted in the concave groove 18 of the short cylindrical body 12 is slidably rotated on the inner peripheral surface of the short cylindrical body 12 with the concave groove serving as a rail. Prevents dirt from adhering to the inner surface.

  According to the site flow with the wiper device of the present embodiment described above, a concave groove is formed in the short cylindrical body, and this is used as a rail to rotate the wiper body in sliding contact. In addition, no clamping member is required, and the structure can be simplified and the manufacturing cost can be reduced.

  As described above, according to the present invention, it is possible to prevent the dirt from adhering to the inner peripheral surface of the short cylindrical body, which is the observation window, by rotating the wiper body. A site flow with a wiper device is provided that is easy to perform, hardly affects the flow of fluid, has a simple structure, is low in manufacturing cost, and has almost no failure or breakage.

It is a disassembled perspective view of the site flow with a wiper apparatus of Example 1. FIG. It is a perspective view of the site flow with a wiper apparatus after assembling each component. It is an axial sectional view of a site flow with a wiper device of Example 1. It is XX sectional drawing in FIG. It is an expansion perspective view of a wiper body. FIG. 6 is a perspective view illustrating a modification of the wiper body according to the first embodiment. It is the perspective view which showed the wiper body used for the site flow with a wiper apparatus of Example 2. FIG. It is a disassembled perspective view of the site flow with a wiper apparatus of Example 3. FIG. It is an axial sectional view of the site flow with a wiper device of Example 3. It is a front view of the general site flow used conventionally. It is the figure which showed the internal structure of the conventional site flow with a wiper apparatus.

Explanation of symbols

2 Piping 4 Flange part 10 Site flow 12 Short cylinder body 14 Wiper body 14a Leg part 14b Base part 14c Wing part 16 Clamping body 16a Clamping part 16b Guide rail part 18 Groove 21 Packing 22 Support frame body 23 Bolt 25 Spatula G Gap

Claims (6)

A site flow (10) for observing the inside of the pipe (2) through which the liquid flows,
A transparent short cylindrical short tube that is disposed between flanges (4) at the pipe ends opposed to each other for connecting and connecting the pipes, and in which a channel for allowing fluid to pass through is formed in the center. (12)
And a wiper body (14) that rotates while sliding in contact with the inner peripheral surface of the short cylindrical body by a fluid flow. A donut-shaped disc-shaped pinching portion that is pinched between the short cylindrical body (12) and the flange portion (4) at the end of the pipe (2) and that has an opening for allowing fluid to pass therethrough. (16a) and a pinching body (16) comprising a guide rail portion (16b) formed on the inner peripheral edge of the pinching portion,
The said wiper body (14) is arrange | positioned between a pair of clamping bodies, and rotates along the said guide rail part with the flow of a fluid, The site flow with a wiper apparatus of Claim 1 characterized by the above-mentioned. An annular groove (18) is formed on the inner peripheral surface in the vicinity of both ends of the short cylinder (12),
2. The wiper body (14) according to claim 1, wherein the leg portions (14 a) at both ends of the wiper body (14) are loosely fitted in the concave groove and rotate along the concave groove by a flow of fluid. 3. Site flow with wiper device.   The guide rail portion (16b) of the pinching body (16) is formed to be bent so as to form a constant gap (G) with the inner peripheral surface of the short cylindrical body (12), and the wiper The site flow with a wiper device according to claim 2, wherein the body (14) is attached by loosely fitting the leg portions (14a) at both ends thereof in the gaps of the opposing guide rail portions.   The wiper body (14) extends in the fluid flow direction, and the leg portions (14a) at both ends are attached to the guide rail portion (16b) or the concave groove (18), and the short cylinder body (12 ) And a plurality of wings (14c) extending from the base into the fluid and generating a rotational force by flowing the fluid. The site flow with a wiper device according to claim 2 or 3. The wiper body (14) is inclined and extended with respect to the fluid flow direction, and generates a rotational force by flowing fluid through the wing part (14c) formed in the axial direction, thereby generating the short cylinder body. A base portion (14b) that slides and rotates on the inner peripheral surface, and an annular frame-like support formed so as to support both ends of the base portion and along the guide rail portion (16b) or the concave groove (18) The site flow with a wiper device according to claim 2 or 3, characterized by comprising a frame (22).

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