JP2017053126A - Valve casing for water service - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve casing for water service capable of easily adjusting a height of a valve casing, and reducing manufacturing cost.SOLUTION: A pedestal D is installed on an upper layer of a gate valve of a buried water service pipe, and a lower casing A is placed on it, and an annular ring-shaped casing installing part A1 provided on the upper end of the lower casing A is inserted into a cylinder on the lower end of an upper casing B, and is connected to the lower casing A. In this case, the upper casing B is cut in response to the buried depth, and a height of a valve casing body 2 is adjusted. Next, the valve casing body 2 is buried up to the proper depth of the upper end of the upper casing B, and a pedestal 7 is installed after push-hardening soil, and an anchor bolt 36 provided on the pedestal 7 is inserted into an anchor bolt insertion hole 32 provided on an installation base 31, and a lid receiver frame body 3 is placed on the pedestal 7, and a nut 37 is threadedly engaged with the anchor bolt 36, and the lid receiver frame body 3 is fixed to the pedestal 7. At this time, voids 5 and 6 are provided in an outer peripheral surface of and above the upper casing B.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a valve housing for a gate valve in a water supply facility.

  Conventionally, a cast screw type valve casing shown in FIG. 1 has been used as a valve casing of a water gate valve. The screw-type valve housing 1 is composed of an upper cylindrical body 1a that also serves as a lid receiving frame provided with a male screw on the outer periphery, and a lower cylindrical body 1b that is screwed to the upper cylindrical body 1a. The upper cylindrical body 1a is rotated during construction. The top surface of the iron lid 1c fitted to the upper cylindrical body 1a is aligned with the road surface by moving it up and down, and the upper cylindrical body even when the road surface is moved up and down due to road re-paving or due to an earthquake, etc. The la can be rotated to match a new road surface.

  However, in the screw type valve housing, it is difficult to cast the upper cylinder body and the lower cylinder body of the screw structure, and defective products such as not rotating well even when trying to screw the upper cylinder body and the lower cylinder body at the time of manufacture. Was likely to occur and the cost was high. Also, when the road surface height has changed as described above after burial, it will not be able to rotate without rusting due to long-term burial, or by using tools such as those shown in the previous document with earth and sand in the screw part. There was a problem that the height could not be adjusted.

  Furthermore, the screw-type valve housing needs to increase the strength of the entire valve housing in order to withstand the load of the vehicle or the like applied to the iron lid fitted to the upper cylinder, which increases the weight and increases the product cost. In addition, there is a problem that handling is difficult in transportation and installation work.

Japanese Patent Laid-Open No. 11-241377

Japan Water Works Association Standard JWWA Water Screw Valve Enclosure Japan Water Works Association issued on June 8, 2000

  Therefore, an object of the present invention is to provide a water supply valve housing that can easily adjust the height of the valve housing and can be manufactured at low cost.

  The present invention has been made to solve the above-described problems. The invention according to claim 1 is a valve housing body in which an upper housing made of synthetic resin is detachably provided on a lower housing, and the upper housing. A water supply valve casing comprising a body and a lid receiving frame main body having a gap formed above.

  The invention according to claim 2 includes a lower housing, an intermediate housing implanted in the lower housing, and an adjustment housing for height adjustment connected to the intermediate housing via a joint. A valve casing main body, and an outer peripheral portion of the adjustment casing and a lid receiving frame main body formed with a gap above.

  A third aspect of the invention is a water supply valve casing according to the first or second aspect of the invention, wherein a reinforcing casing is provided.

  According to a fourth aspect of the present invention, in the first to third aspects of the present invention, in addition to the anchor bolt insertion hole, a screw hole for mounting a bolt for jack is provided in the mounting base of the lid receiving frame main body, and The water valve casing is characterized in that a substantially vertical outer wall having the same height as the upper surface of the lid receiving frame body is provided outside.

  A fifth aspect of the present invention is the valve casing for water supply according to the first to fourth aspects of the present invention, wherein a hook hook portion for lifting is provided on the inner surface of the lid receiving frame main body.

  According to the first aspect of the present invention, the height of the road surface changes due to re-paving, earthquake, or the like. For example, when the road surface sinks, the upper housing of the valve housing is made of synthetic resin such as vinyl chloride. The height can be easily adjusted by cutting the upper part of the upper housing with a cutter or the like. Also, when the road surface rises, it takes more time than when the road surface sinks, but the upper housing is detachably attached to the lower housing. The height of the valve casing can be easily adjusted by exchanging the upper casing. Further, when replacing the upper casing, it is not necessary to dig up the entire valve casing, and the cost can be reduced compared to replacing the entire valve casing.

  In addition, in the case of the conventional screw type valve housing, it was necessary to install the whole according to the road surface gradient when there is a gradient on the road surface, but since a gap is formed on the outer periphery and upper part of the upper housing, This can be dealt with by adjusting the installation of the lid receiving frame body.

  Moreover, since the upper housing is made of synthetic resin, it is less expensive and lighter than a casting. Furthermore, since the valve casing is divided into an upper part and a lower part, the handling is simple and the installation work can be performed easily.

  According to the second aspect of the present invention, when the height of the road surface changes due to re-paving or an earthquake, the adjustment housing above the valve housing can be easily removed from the joint. The height of the valve housing can be easily adjusted by exchanging only the housing with the required length, or by cutting the housing for adjustment on site and adjusting the length. Since there is only a part of the housing for adjustment, labor and cost for changing the height can be reduced. In addition, the joint that connects the intermediate housing and the adjustment housing is made of an elastic material such as rubber, so that side pressure on the valve housing and vibrations such as earthquakes can be mitigated when the surrounding soil and asphalt is pressed and hardened during construction. Can do.

  Next, according to the third aspect of the present invention, when the upper housing, the intermediate housing, and the adjustment housing press the surrounding soil and asphalt during the above construction by the reinforcing housing, the lateral pressure applied to the valve housing is increased. It has the effect of being protected from the external environment such as vibrations such as earthquakes.

  Next, according to the invention described in claim 4, in addition to the above effect, when the height of the road surface is changed, the fixing nut of the lid receiving frame main body is removed without digging up the periphery of the lid receiving frame main body, Screw the jack bolt into the jack bolt mounting screw hole to lift the lid receiving frame, remove the lid receiving frame, and insert a height adjusting spacer between the lid receiving frame and the pedestal to adjust the height of the road surface. Can respond to changes.

  Next, according to the fifth aspect of the present invention, since the hook of the lifting device can be hung on the hook hanging portion and the lid receiving frame main body can be lifted, the lid receiving frame main body and the seat can be received without dug up the periphery of the lid receiving frame main body. By inserting a spacer for adjusting the height between the two, there is an effect that can cope with a change in the height of the road surface.

It is a longitudinal cross-sectional view of an example of the conventional screw type valve housing. It is a longitudinal cross-sectional view of Example 1 of this invention. It is a longitudinal cross-sectional view of Example 2 of this invention. It is a longitudinal cross-sectional view of Example 3 of the present invention. It is a longitudinal cross-sectional view of Example 4 of this invention. It is a longitudinal cross-sectional view of Example 5 of this invention.

  FIG. 2 is a longitudinal sectional view of the first embodiment of the present invention, 2 is a valve housing body for water supply, and 3 is a lid receiving frame body. The valve housing body 2 is composed of a cast lower housing A and a cylindrical upper housing B made of vinyl chloride fitted to the outside of the housing mounting portion A1 of the lower housing A, and C is an upper housing. An inner lid for preventing water, earth and sand, etc., fitted in the upper part of the body from entering the inside of the valve body 1, D is an annular base made of resin concrete or recycled plastic on which the valve body 2 is installed It is.

  Further, the lid receiving frame body 3 is provided with an appropriate number of anchor bolt insertion holes 32 and an appropriate number of jack bolt screw holes 33 in the mounting base 31, and the outer side of the mounting base 31 is the same height as the upper surface of the lid receiving frame body 3. A substantially vertical outer wall 34 is provided, and an appropriate number of lifting hooks 35 are provided on the inner wall. The size of the lid receiving frame body 2 is between the upper casing B and the iron lid 4. The gaps 5 and 6 are formed to have a size. In the figure, 36 is an anchor bolt, 37 is a nut, and 7 is an annular pedestal made of recycled plastic, resin concrete, or casting.

  Explaining the construction method of the valve casing of the present embodiment, the pedestal D is installed on the upper layer of the gate valve of the buried water pipe, the lower casing A is placed thereon, and the lower casing A is provided at the upper end of the lower casing A. The lower end of the upper casing B is fitted to the outside of the annular casing mounting portion A1 and connected to the lower casing A. At this time, the upper part of the upper casing B is cut to such a length that a gap is formed between the upper end of the upper casing B and the iron lid 4, and the height of the valve body 1 is adjusted.

  Next, after backfilling to the position where the pedestal 7 is to be installed, the ground is pressed and solidified. After the pedestal 7 is installed, the anchor bolt 36 provided on the pedestal 7 is inserted into the anchor bolt insertion hole 32 provided on the mounting base 31. The lid receiving frame main body 3 is placed on the pedestal 7, and the nut 37 is screwed to the anchor bolt 36 to fix the lid receiving frame main body 3 to the pedestal 7. After the lid receiving frame main body 3 is installed in this way, the pavement is constructed with the ground stabilized as much as possible including the backfilling soil in a temporarily paved state.

  The height of the valve casing body 2 was adjusted by cutting the upper casing B before embedding the valve casing body 2. However, after the valve casing body 2 was embedded, the lid receiving frame body 3 was temporarily installed to increase the height. After confirmation, the upper end of the upper housing B may be cut.

  According to the present embodiment, when the road surface is lowered due to re-paving or an earthquake after construction, there is no need to adjust the upper gap 6 range. By cutting the upper end of the housing B, the height of the valve body 2 can be adjusted.

  Also, if the road surface rises due to re-paving or earthquake after construction, the upper casing B and lower casing A are detachably connected, so the upper casing B is pulled out and adjusted to an appropriate length. The height of the valve stem body 2 can be adjusted by replacing the upper case with an additional upper case or by connecting a cylindrical tube on the upper case B with a joint as in the embodiments described later. It is excellent.

And since it is a split type, compared with a heavy (for example, 90 kg) conventional screw type valve case, coupled with the fact that the upper case B is made of vinyl chloride, the valve case body 2 is lighter and can be handled at the time of construction. It is simple and easy to work with, and the height can be easily adjusted without problems due to rust compared to a screw-type valve housing.

  When the height of the valve body 2 does not need to be adjusted, the nut 37 is removed and a jack bolt (not shown) is screwed into the jack bolt mounting portion 33 to lift the lid receiving frame body 3. The lid receiving frame body 3 is removed by lifting the lid receiving frame body 3 by hooking a hook of the lifting device to the hook hanging portions 35, 35, and a spacer (not shown) is provided between the lid receiving frame body 3 and the base 7. By inserting, the upper surface of the iron lid 4 of the lid receiving frame body 3 can be adjusted to the road surface. In such a case, since the periphery of the lid receiving frame main body 3 is not dug down, the construction is simple and the cost can be reduced. Furthermore, by providing the gaps 5 and 6, there is a feature that can cope with the road surface with a gradient

  FIG. 3 is a longitudinal sectional view of a second embodiment of the present invention, in which 21 is a valve rod body, A is a lower casing made of cast metal, and A1 is an annular casing mounted on the upper end of the lower casing A. B1, B2 are a cylindrical intermediate housing made of vinyl chloride and an adjustment housing for height adjustment, C is water or earth and sand that fits in the upper portion of the adjustment housing B2, and the inside of the valve body 21 An inner lid for preventing entry, D is an annular pedestal made of resin concrete or recycled plastic on which the valve casing body 21 is installed, E is an intermediate casing B1 and an adjustment casing B2 for height adjustment An elastic joint made of, for example, synthetic rubber having a horizontal T-shaped cross-section for connecting the cover 3 and a cover receiving frame main body, the configuration of which is the same as in the first embodiment.

  The valve stem body 21 of the present embodiment has the lower end of the intermediate casing B1 fitted to the outside of the casing mounting portion of the lower casing A1, and the upper end of the intermediate casing B1 and the lower end of the adjustment casing B2 are connected to the joint E. It is configured by insertion fitting. Since the intermediate housing B1 and the adjustment housing B2 are made of vinyl chloride, they are light and easy to handle, and even when adjusting the height of the valve body 1 during embedment, the intermediate housing B1 is buried to the height of the intermediate housing B1. According to the situation, only the adjustment housing B2 can be cut and easily adjusted.

  In addition, when the road surface goes up and down due to re-paving or earthquake after construction, the upper part of the adjustment casing B2 is cut, or the adjustment casing B2 is replaced with an appropriate length so that the valve body The required height of 21 can be easily adjusted. In this case, since only the adjustment casing B2 needs to be cut or replaced, labor and cost can be reduced as compared with the first embodiment.

  Further, since the joint E is an elastic joint, it is possible to mitigate shaking caused by a side pressure applied to the lid receiving frame body 3 during snow removal or an earthquake.

  Although the cross-sectional shape of the joint E is a horizontal T-shape, the cross-sectional shape may be an H-shape so as to support the inner surfaces of the intermediate housing B1 and the adjustment housing B2.

  The effect of the lid receiving frame main body 3 when the height of the valve stem main body 21 does not need to be adjusted is the same as that of the first embodiment.

  FIG. 4 is a longitudinal sectional view of a third embodiment of the present invention, in which 22 is a valve stem body, A2 is a cast lower housing, and A3 is an annular housing attached to the upper end of the lower housing A2. B3 and B4 are a cylindrical intermediate case made of vinyl chloride and an adjustment case for height adjustment, and C is water or earth and sand fitted in the upper part of the adjustment case B4. An inner lid for preventing entry into the interior, D is an annular pedestal made of resin concrete or recycled plastic on which the valve housing body 22 is installed, E1 is an intermediate housing B3 and an adjustment housing for height adjustment An annular elastic joint made of synthetic rubber or the like for connecting B4, 3 is a lid receiving frame body, and the configuration thereof is the same as in the first embodiment.

  The intermediate housing B3 is a cylindrical housing having a diameter larger than that of the adjusting housing B4. Since the diameter is large, it is easy to operate the water control valve, and since the joint E1 has an arch shape, the side pressure is increased. There is an effect that the strength against is high.

  FIG. 5 is a longitudinal sectional view of a fourth embodiment of the present invention, in which 23 is a valve stem body, A4 is a lower casing made of casting, B1 and B2 are a cylindrical intermediate casing made of vinyl chloride and a height. An adjustment housing for adjustment, C is an inner lid for preventing water, earth and sand, etc., fitted into the upper portion of the adjustment housing B2 from entering the inside of the valve rod body 23, and D is the valve housing body 23. An annular base made of resin concrete or recycled plastic, E is an elastic joint having a horizontal T-shaped cross section for connecting the intermediate housing B1 and the adjustment housing B2 for height adjustment, F is A vinyl chloride reinforcing casing G is a mortar poured between the intermediate casing B1 and the reinforcing casing F. 3 is a lid receiving frame main body, and the structure is the same as that of the first embodiment.

A5 is an annular housing mounting portion provided at the upper end of the lower housing A4, and the lower end of the intermediate housing B1 and the reinforcing housing F are inserted and fitted into the fitting groove A6 of the housing mounting portion. The casing B1 and the reinforcing casing F can be attached to the lower casing A4, and the mortar G can be poured between the intermediate casing B1 and the reinforcing casing F to integrate the two, thereby reinforcing the strength.

  According to the present embodiment, the reinforcement housing F is provided as in the second embodiment, so that it can withstand an external environment such as a lateral pressure applied to the valve housing and a shaking such as an earthquake when the surrounding soil or asphalt is pressed. it can.

  FIG. 6 is a longitudinal sectional view of a fifth embodiment of the present invention, in which 24 is a valve stem body, A4 is a lower casing made of casting, B1 and B2 are a cylindrical intermediate casing made of vinyl chloride and a height. An adjustment housing for adjustment, C is an inner lid for preventing water, earth and sand, etc., fitted in the upper portion of the adjustment housing B2 from entering the inside of the valve body 24, and D is a body 1 installed. An annular pedestal made of resin concrete, recycled plastic, etc., E2 has an H-shaped cross section for connecting the intermediate casing B1, the adjustment casing B1 for height adjustment, and the reinforcing casings F1 and F2 described later F1 and F2 are reinforcing cases made of vinyl chloride, G is a mortar, 3 is a lid receiving frame main body, and the configuration is the same as in the first embodiment.

The valve stem body 24 of the present embodiment is reinforced with the intermediate casing B1 by inserting and fitting the lower ends of the intermediate casing B1 and the reinforcing casing F1 having the same length into the fitting groove A6 of the casing mounting portion A5. The housing F1 is attached to the lower housing A4, the mortar G is poured between the intermediate housing B1 and the reinforcing housing F1, and the upper ends of the intermediate housing B1 and the reinforcing housing F1 are fitted to the lower part of the joint E2. The lower ends of the adjustment casing B2 and the reinforcing casing F2 are inserted and fitted into the upper part of the joint E2.

Since the reinforcing housing F2 is made of vinyl chloride, it can be easily adjusted to an appropriate length before and after construction.

  According to the present embodiment, in addition to the effects of the fourth embodiment, the intermediate housing B1 and the adjustment housing B2 are covered with the reinforcing housings F1 and F2. It can withstand the external environment such as side pressure applied to the valve housing and shaking such as an earthquake.

  Further, since the reinforcing housing F2 supports the pedestal 7, the lid receiving frame body 3 is supported by the valve stem body 24 even when the formation between the valve stem body 24 and the lid receiving frame body 3 is liquefied due to an earthquake. Therefore, the lid receiving frame body 3 in the upper layer of the valve rod body 24 can be prevented from sinking.

2 Valve body A Lower housing A1 Housing mounting portion B Upper housing C Inner lid D, 7 Base 3 Lid receiving frame body 4 Iron lid 5, 6 Air gap 31 Mounting base 32 Anchor bolt insertion hole 33 Jack bolt screw hole 34 Outer wall 35 Hook hook part 36 Anchor bolt 37 Nut

Claims (5)

A water supply comprising a valve housing body in which an upper housing made of a synthetic resin is detachably provided on a lower housing, and a lid receiving frame body in which a gap is formed above and on the outer periphery of the upper housing. Valve housing. A valve housing main body comprising a lower housing, an intermediate housing implanted in the lower housing, and an adjustment housing for height adjustment connected to the intermediate housing via a joint; and the adjustment A water supply valve housing comprising an outer peripheral portion of a housing for use and a lid receiving frame main body having a gap formed above. The water valve casing according to claim 1 or 2, further comprising a reinforcing casing. In addition to providing anchor bolt insertion holes in the mounting base of the lid receiving frame body, screw holes for attaching bolts for jacks are provided, and a substantially vertical outer wall having the same height as the upper surface of the lid receiving frame body is provided outside the mounting base. 4. A water supply valve casing according to claim 1, wherein the water supply valve casing is provided. 5. A water valve casing according to claim 1, wherein a hook hook portion for lifting is provided on an inner wall of the lid receiving frame main body.

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