JP6644930B1 - Valve installed in vertical pipe horizontal water lock - Google Patents

Abstract

An object of the present invention is to provide a valve that does not cause unevenness in water stoppage due to a smooth movement when a valve body is moved up and down. A T-shaped tube (12) having a vertical portion (14) and a horizontal portion (16), and a valve element (22) disposed inside the vertical portion, and a center adjacent to the horizontal portion of the vertical portion on the side of the mouthpiece pipe is provided. A valve seat 18 having an opening at the top is provided, and the valve body is opened between an upper end and a lower end, a substantially cylindrical outer tube 24 having an outer diameter substantially equal to the inner diameter of the vertical portion, and an inner surface of the outer tube. An inner tube 26 disposed inside the outer tube so that a space is formed, an end connected to the opening of the outer tube, and an upper end connected to the valve stem 38; The inner surface of the vertical portion in which the outer tube is housed is also tapered so that the inner surface of the vertical portion in which the outer tube is housed is tapered. When the seat is seated, the water is shut off, and the end of the inner pipe is configured to communicate with the spout pipe. [Selection diagram] Fig. 1

Description

  The present invention relates to a valve installed in a vertical pipe horizontal water lock. More specifically, the present invention relates to a valve that does not cause unevenness in water stoppage due to smooth movement when the valve body is moved up and down.

  As a drainage method for agricultural land, culvert drainage with a culvert buried underground as a drainage channel is widely used, and a water lock is known as a facility for adjusting the water level of agricultural land. FIG. 10 is a diagram showing an example of a water lock called a vertical pipe type horizontal water lock. In the vertical pipe type horizontal water lock shown in FIG. 10, a valve stem having a valve attached to a lower end is disposed in a protective tube, and a spout is formed on one side (downstream side) of a T-shaped tube disposed at a lower end of the protective tube. A tube is attached and the other (upstream side) is a drinking tube. Then, from spring to autumn, the valve is closed to make the water shut off (see FIG. 10A), and at the time of autumn harvest or during winter, the valve is opened to drain the water (FIG. 10B). )) To control the supply and drainage of agricultural land.

  However, a valve installed in a conventional vertical pipe horizontal water lock is generally of a type in which a rubber guide is attached around a valve rod (see FIG. 10 (d)). It tends to rattle without moving smoothly, which may cause unevenness in the water stoppage and may cause the valve body itself to float.

  The present invention has been developed to overcome the above-mentioned problems of the valve installed in the vertical pipe type horizontal water lock in the prior art, and unevenness in water stoppage due to smooth movement of the valve body when ascending and descending. It aims to provide a valve that does not occur.

The valve installed in the vertical pipe type horizontal water lock according to claim 1 of the present application is arranged such that a vertical portion connected to a lower portion of the protection tube and a lower portion of the vertical portion communicate with the vertical portion, and one end is provided. A mouth tube having a T-shaped tube having a horizontal portion having the other end connected to the spout tube, and a valve body made of a synthetic resin material disposed inside the vertical portion; A valve seat having an opening at the center is provided at a location adjacent to the horizontal portion, and the valve body has a substantially cylindrical outer shape having upper and lower ends opened and having an outer diameter substantially equal to the inner diameter of the vertical portion. An inner pipe arranged inside the outer pipe such that a space is formed between the pipe and the inner surface of the outer pipe, an end connected to an opening of the outer pipe, and an upper end connected to a valve stem. And the outer surface of the outer tube is tapered downward at an angle γ inward of the outer tube with respect to a vertical line. Shaped in so that the inner surface of the vertical portion of the outer tube is housed also has a taper angle γ is attached, wherein are O- rings on the outer surface of the periphery of the opening is fitted in the outer tube, When the valve body is lowered and the outer tube is seated on the valve seat, a water-stop state is established, and the end of the inner tube is configured to communicate with the spout tube. It is.

  The valve installed in the vertical pipe type horizontal water lock according to claim 2 of the present application is the valve according to claim 1, wherein the angle γ is 10 ° or less.

  According to the present invention, since the outer tube 24 is formed in a cylindrical shape having an outer diameter substantially equal to the inner diameter of the vertical portion 14, it is possible to avoid rattling when the valve body 22 moves up and down. In addition, by providing the outer surface of the outer tube 24 and the inner surface of the vertical portion 14 with a taper having an angle γ, the valve body 22 is securely housed in the vertical portion 14 at the time of water stoppage, thereby improving the water stoppage. be able to. In addition, by attaching the O-ring 32 to the outer surface around the opening 24b of the outer tube 24 provided with the taper of the angle γ as described above, the adhesion of the O-ring 32 is enhanced, and water leakage is reliably prevented. Can be. Furthermore, since the valve of the present invention is formed of a synthetic resin material and has a space between the outer pipe 24 and the inner pipe 26 of the valve body 22, the valve is light as a whole and easy to operate.

It is sectional drawing which showed the state which the valve which concerns on preferable embodiment of this invention is in the water stop position. FIG. 2 is a perspective view showing an appearance of a T-tube constituting the valve of FIG. 1. 3A is a front view of the T-tube, FIG. 3B is a plan view of the T-tube, FIG. 3C is a right side view of the T-tube, and FIG. It is a left side view. 4A is a sectional view taken along line 4a-4a in FIG. 3B, and FIG. 4B is a sectional view taken along line 4b-4b in FIG. 4A. FIG. 2 is a perspective view illustrating an appearance of a valve body that constitutes the valve of FIG. 1. 6 (a) is a front view of the valve body, FIG. 6 (b) is a plan view of the valve body, FIG. 6 (c) is a left side view of the valve body, and FIG. 6 (d) is a right side view of the valve body. is there. 7A is a sectional view taken along line 7a-7a in FIG. 6B, FIG. 7B is a sectional view taken along line 7b-7b in FIG. 7C is an enlarged view of a portion 7c in FIG. 7A, and FIG. 7D is an enlarged view of a portion 7d in FIG. It is an exploded perspective view of a valve body. It is the schematic diagram which showed the vertical pipe type horizontal water lock in which the valve was installed. FIG. 10A is a schematic view showing an example of a conventional vertical pipe horizontal water lock, in which FIG. 10A shows a water stop state, FIG. 10B shows a drainage state, and FIG. 10A is an enlarged view of a portion 10c of FIG. 10A, and FIG. 10D is a view taken along line 10d-10d of FIG. 10C.

  Next, with reference to the drawings, a valve (hereinafter, simply referred to as a “valve”) installed in a vertical pipe horizontal water lock according to a preferred embodiment of the present invention will be described in detail. FIG. 1 is a sectional view showing a state in which a valve according to a preferred embodiment of the present invention is at a water stop position. A valve according to a preferred embodiment of the present invention, generally indicated by reference numeral 10 in FIG. 1, includes a T-tube 12 and a valve body 22 disposed inside a vertical portion 14 of the T-tube 12. I have.

  FIG. 2 is a perspective view showing the appearance of the T-tube 12. The T-shaped tube 12 has a cylindrical vertical portion 14 and a cylindrical horizontal portion 16 disposed below the vertical portion 14, and has a front shape with "T" inverted. The vertical portion 14 and the horizontal portion 16 communicate with each other as shown in FIG.

  The vertical portion 14 is provided with a valve seat 18 at a position adjacent to the horizontal portion 16 on the side of the mouthpiece tube. As best shown in FIG. 4 (b), the valve seat 18 is formed in a ring shape with its lower part cut off, and extends downward from an end upper end 16a of the horizontal part 16 on the drinking tube side. Is inclined inward of the vertical portion 14 so as to form an angle α. Here, “inward” of the vertical portion 14 means the direction of the center of the vertical portion 14. Reference numeral 20 indicates a rib for reinforcement.

  Referring to FIG. 4B, the shape of the valve seat 18 will be described in more detail. The valve seat 18 has an outer periphery 18a and an inner periphery 18b, and is formed in a ring shape having an opening 18c at the center. The lower portion is cut off so that an intersection 18e between a line extending in both directions so as to form a central angle β downward from the center 18d of the ring and the outer periphery 18a is a lower end of the valve seat 18. An outer periphery 18 a of the valve seat 18 is fixed to an inner surface 14 a of the vertical portion 14.

  When water is supplied through the mouthpiece pipe, water flows into the valve 10 from the opening 18c. However, since the outer periphery 18a of the valve seat 18 is fixed to the inner surface 14a of the vertical portion 14, the valve 10 Can withstand. Further, since the lower part of the valve seat 18 is cut off, it is possible to prevent dust contained in the water from being entangled with the lower surface 14b of the vertical part 14, the valve seat 18 and the like and accumulated there. Sometimes, the valve element 22 is seated on the valve seat 18, but if the lower portion of the valve seat 18 is not cut off, dust is entangled with the valve seat 18 and the seating of the valve element 22 on the valve seat 18 becomes insufficient. May result in incomplete water stoppage).

  The inclination angle α of the valve seat 18 is selected so that the valve body 22 is securely seated on the valve seat 18 (if the angle α is too small, the support of the valve body 22 may be insufficient, If α is too large, the space below the vertical pipe 14 will be narrow, and it will be difficult to connect the inner pipe 26 of the valve body 22 to the horizontal section 16 on the outlet pipe side, which will be described later). According to various experiments performed by the present inventors, the preferred angle α is 55 ° to 75 °, and the most preferred angle α is 60 ° to 70 °.

  The central angle β that defines the cutting range below the valve seat 18 is selected so that entanglement of dust is eliminated and the valve body 22 can be reliably supported (if the central angle β is too small, the central angle β is too small). If the center angle β is too large, the valve body 22 may be insufficiently supported. According to various experiments performed by the inventor, a preferable central angle β is 90 ° to 115 °, and a most preferable central angle β is 95 ° to 110 °.

  An opening 14c is provided below the vertical portion 14 at a location adjacent to the horizontal portion 16 on the outlet tube side. The opening 14c is connected to the end 26b1 of the horizontal pipe 26b of the inner pipe 26 of the valve body 22 and serves as a passage for drainage from the inner pipe 26 to the spout pipe, as described later in detail.

  FIG. 5 is a perspective view showing the appearance of the valve element 22, and FIG. 8 is an exploded perspective view of the valve element 22. The valve body 22 has an outer tube 24 and an inner tube 26 arranged inside the outer tube 24.

  The outer tube 24 has a cylindrical shape as a whole, and has upper and lower ends open. The outer diameter of the outer tube 24 is selected to be substantially the same as the inner diameter of the vertical portion 14 so that it can be accommodated inside the vertical portion 14 of the T-tube 12.

  The outer surface of the outer tube 24 is shaped to taper downward at an angle γ inward of the outer tube 24 with respect to a vertical line. In other words, the outer surface of the outer tube 24 is narrowed downward by the angle γ (see FIG. 6A). The inner surface of the vertical portion 14 in which the outer tube 24 is housed is also tapered at an angle γ so as to match the taper of the outer surface of the outer tube 24 (see FIG. 4A). Here, “inward” of the outer tube 24 means the direction of the center of the outer tube 24. By providing such a taper on the outer surface of the outer tube 24 and the inner surface of the vertical portion 14, the valve body 22 is securely housed in the vertical portion 14 at the time of water stoppage, so that the valve body 22 is rattled. Can be prevented.

  The taper angle γ is selected so that the valve body 22 can be securely housed in the vertical portion 14 at the water stop position of the valve 10 (if the angle γ is too large, the vertical portion 14 in which the valve body 22 is housed). It is not preferable because the space inside becomes narrow). According to various experiments performed by the present inventors, the preferred angle γ is 10 ° or less, and the most preferred angle γ is 3 ° or less.

  The lower portion of the outer tube 24 at a position of 0 degrees (the position where the mouthpiece tube is connected as shown in FIG. 6B) is cut off 24 a at an angle that matches the inclination angle α of the valve seat 18. . As a result, the valve body 22 can be reliably seated on the valve seat 18, and good water stopping can be achieved even when the water pressure is insufficient.

  An opening 24b connected to the end 26b1 of the horizontal tube 26b of the inner tube 26 is provided at a position of 180 degrees of the outer tube 24 (the position where the spout tube is connected as shown in FIG. 6B). ing. The lower portion of the outer tube 24 at a position of 180 degrees is formed into a shape 24c that matches the inner surface 14b of the lower portion of the vertical portion 14 when the valve body 22 is seated on the valve seat 18.

  The lower part of the outer tube 24 at the 90-degree position (see FIG. 6B) is formed into a shape 24d that matches the lower inner surface 14b of the vertical part 14 when the valve body 22 is seated on the valve seat 18. ing. The lower part of the outer tube 24 at a position of 180 degrees (see FIG. 6B) is also lower than the lower part of the vertical part 14 when the valve body 22 is seated on the valve seat 18, similarly to the lower part of the position of 90 degrees. The shape 24d is shaped to match the inner surface 14b.

  As shown in FIG. 8 which is an exploded perspective view of the valve element 22, the inner pipe 26 is an L-shaped cylindrical pipe as a whole, and communicates with the vertical pipe 26a and the bottom of the vertical pipe 26a with the vertical pipe 26a. The upper end 26a1 of the vertical tube 26a and the end 26b1 of the horizontal tube 26b are open. The center axis x of the inner tube 26 is substantially the same as the center axis x of the outer tube 24, and the end 26 b 1 of the horizontal tube 26 b is located at the opening 24 b of the outer tube 24. It is fixed in the outer tube 24 so that a space is formed therebetween. The inner tube 26 is fixed to the outer tube 24 by a plurality of (four in the figure) mounting plates 28.

  Although the upper end 26a1 of the vertical tube 26a of the inner tube 26 is illustrated as protruding above the outer tube 24 (see, for example, FIG. 6A), the upper end 26a1 is inserted into the vertical tube 26a as described later. This is in consideration of the ease with which the valve stem 38 can be mounted, and is not an essential configuration of the present invention.

  The water that has flowed from the drinking tube rises through the space between the outer tube 24 and the inner tube 26 and flows into the space below the horizontal tube 26 b of the inner tube 26. The water that has flowed into the space below the horizontal pipe 26b of the inner pipe 26 collides with the inner surface of the outer pipe 24 and diffuses. In order to prevent such water diffusion and flow in one direction, it is preferable. A plurality of (three in FIG. 6D and FIG. 7B) rectifying plates 30 are attached to the outer surface of the lower surface of the horizontal tube 26b of the inner tube 26 along the water flow direction. The current plate 30 has an upper edge fixed to the lower surface of the horizontal tube 26 b and a leading edge fixed to the inner surface of the outer tube 24 so as to withstand water pressure.

  By attaching the flow straightening plate 30, the water flowing into the space below the horizontal pipe 26b from the drinking water pipe rises after flowing along the water flow direction, but can maintain a constant flow velocity because it does not diffuse. It is possible to prevent dust from collecting in the space below the horizontal pipe 26b.

  An O-ring 32 is attached to the outer surface of the valve body 22 around the opening 24 b of the outer tube 24. That is, the O-ring 32 is disposed in a groove on the outer periphery of the curved ring-shaped mounting piece 32a, and the mounting piece 32a is fitted into a concave portion 24e provided around the opening 24b of the outer tube 24, whereby the O-ring 32 is formed. 32 (see FIG. 7C). Then, when the valve body 22 is lowered and the lower portion 24a of the outer tube 24 on the side of the drinking tube is seated on the valve seat 18, the water is stopped, and the end 26b1 of the horizontal tube 26b of the inner tube 26 is opened through the opening 24b. It is designed to communicate with the spout tube. Since the outer surface of the outer tube 24 to which the O-ring 32 is attached is provided with a taper and the inner surface of the vertical portion 14 with which the O-ring 32 comes into contact is also provided with a taper, the adhesion of the O-ring 32 is improved. It can be raised and water leakage can be reliably prevented.

  By providing the O-ring 32, water discharged from the horizontal pipe 26b of the inner pipe 26 through the spout pipe does not leak from the gap between the horizontal portion 16 and the outer pipe 24 (FIG. 7D). reference).

  Reference numeral 34 shown in FIGS. 7 (a) and 7 (b) indicates that the valve stem 38 does not excessively enter the vertical tube 26a when the valve stem 38 described later is attached to the upper end of the vertical tube 26a. 1 shows a stopper for performing the operation.

  FIG. 9 is a schematic diagram showing a vertical pipe type horizontal water lock in which the valve 10 is installed. A protection tube 36 is connected to an upper end of the vertical portion 14 of the T-shaped tube 12, and a valve stem 38 is attached to an upper end of the vertical tube 26 a of the valve body 22. One (upstream) horizontal portion 16 of the T-tube 12 is connected to the culvert drain via a mouthpiece tube and a connection socket, and the other (downstream) horizontal portion 16 of the T-tube 12 is a spout. Connected to the tube. A plurality of water level adjusting holes 38a are provided in the upper half of the valve stem 38, and a water level adjusting collar 38b having an inner diameter substantially equal to the outer diameter of the valve stem 38 is fitted therein. The water level is adjusted by exposing / closing the water level adjustment hole 38a by moving it up and down. Such a water level adjusting mechanism is a known means.

  Each component of the T-tube 12 and the valve body 22 of the valve 10 of the present invention is formed of a synthetic resin material such as vinyl chloride.

  A method of using the vertical pipe type horizontal water lock provided with the valve 10 configured as described above will be described mainly with reference to FIG. 9. In the water-stop state from spring to autumn, the valve rod 38 is lowered to seat the valve body 22 on the valve seat 18. At this time, since the outer tube 24 is formed in a cylindrical shape having an outer diameter substantially the same as the inner diameter of the vertical portion 14, it is possible to avoid rattling when the valve body 22 moves up and down, and to prevent the outer tube 24 from moving. Since the outer surface and the inner surface of the vertical portion 14 are provided with a taper having an angle γ, the valve body 22 is securely housed in the vertical portion 14 at the time of water stoppage, and good water stoppage is obtained. Further, since the O-ring 32 is attached to the outer surface around the opening 24b of the outer tube 24 provided with the taper of the angle γ, the tightness of the O-ring 32 is improved, and the water leakage is reliably prevented. Can be.

  The water level adjustment collar 38b of the valve rod 38 is moved up and down so that the farmland has a desired water level. Then, the water flowing from the drinking tube rises to the upper end of the water level adjusting collar 38b through the space between the outer tube 24 and the inner tube 26. The water that has risen to the upper end of the water level adjustment collar 38b flows into the inner pipe 26 from the water level adjustment hole 38a of the valve rod 38, and is discharged through the spout pipe. As a result, the agricultural land is always maintained at a desired water level.

  Since the lower part of the valve seat 18 is cut off, it is possible to prevent dust contained in the inflowing water from being entangled with the lower surface 14b of the vertical portion 14 and accumulated. Further, since the flow straightening plate 30 is attached, water flowing from the drinking tube can be maintained at a constant flow rate without being diffused, so that dust can be prevented from being accumulated in the space below the horizontal tube 26b.

  In a drainage state such as a harvest season or winter season, the valve body 22 is raised and the valve 10 is opened. Then, the water that has flowed in from the drinking tube flows into the discharging tube as it is and is discharged.

  The present invention is not limited to the above embodiments of the invention, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the invention. Needless to say, it is.

  For example, the water level adjustment mechanism described above is exemplary, and other suitable water level adjustment mechanisms may be used. In addition, the shapes and dimensions of the details of each component are shown only as examples.

10 Valve 12 T-shaped tube 14 Vertical portion 14a Inner surface 14b Lower surface 14c Opening 16 Horizontal portion 18 Valve seat 18a Outer periphery 18b Inner periphery 18c Opening 18d Center 18e Lower end 20 Rib 22 Valve body 24 Outer tube 26 Inner tube 26a Vertical tube 26b Horizontal tube 28 Mounting plate 30 Rectifier plate 32 O-ring 34 Stopper 36 Protection tube 38 Valve rod 38a Water level adjustment hole 38b Water level adjustment collar

Claims (2)

A valve installed in a vertical pipe horizontal water lock,
A T-shaped portion having a vertical portion connected to a lower portion of the protective tube, and a horizontal portion disposed below the vertical portion so as to communicate with the vertical portion, one end of which is connected to the drinking tube and the other end of which is connected to the spouting tube; Tubes and
A valve body made of a synthetic resin material disposed inside the vertical portion,
A valve seat having an opening in the center is provided at a position adjacent to the horizontal portion on the side of the drinking-water pipe of the vertical portion,
The valve body has an upper end and a lower end opened, and the outer tube is formed so that a space is formed between a substantially cylindrical outer tube having an outer diameter substantially equal to the inner diameter of the vertical portion and an inner surface of the outer tube. An inner pipe disposed inside the pipe, an end connected to the opening of the outer pipe, and an upper end connected to the valve stem;
The outer surface of the outer tube is shaped so as to taper downward at an angle γ inward of the outer tube with respect to a vertical line, and the inner surface of the vertical portion in which the outer tube is housed also has an angle. has a γ taper,
An O-ring is attached to an outer surface around the opening of the outer tube ,
The valve is characterized in that the valve body is lowered so that the outer pipe is seated on the valve seat to be in a water stop state, and the end of the inner pipe communicates with the spout pipe. .   The valve according to claim 1, wherein the angle γ is equal to or less than 10 °.

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