JP3139630U - Recyclable piping sleeve - Google Patents

Abstract

[PROBLEMS] To provide a PVC pipe for use in construction of through-holes such as water supply and drainage on a concrete foundation of a building. After the concrete is placed and cured, the PVC pipe can be easily removed from the casing and repeatedly recycled.
A sealing pipe is provided, wherein one end face of a PVC pipe is opened, a fixing tool for fixing the one end face to a floor frame is attached to the inner face of the one end face, and the other end face can be crowned. A PVC pipe drawing projection is provided at a symmetrical position on the inner surface of the PVC pipe near the other end face, and a double structure is made by fitting an outer cylinder made of Pravene in close contact with the outer surface of the PVC pipe. Recyclable piping sleeve.
[Selection] Figure 1

Description

  This device is a double-layer fitting in which a PVC pipe (hereinafter referred to as a PVC pipe) and a plastic veneer (trade name) outer cylinder used for through-hole formation work such as water supply and drainage are fitted into the concrete that constitutes the foundation of a building. It relates to a structural sleeve.

  Conventionally, voids (paper cylinders), PVC pipes, or actual pipe sleeves of iron pipes and galvanized pipes have been used in construction for forming through holes for water supply and drainage in a concrete foundation of a building.

  Voids (paper cylinders) are inexpensive and easy to process, but all of them must be removed after concrete placement and treated as waste, which has the disadvantage of requiring significant costs. On the other hand, PVC pipes are easy to process and do not require waste material treatment. However, the use location is limited on the ground floor, and it is difficult to remove from the housing after the construction. In addition, the actual pipe sleeves of iron pipes and galvanized pipes are very convenient because they remain in the skeleton after placing concrete, but they are more expensive than other sleeve materials and cause rusting in the building. Each member has a problem.

  PVC pipe sleeves have disadvantages such as limited use on the ground floor, but if the concrete shape can be easily removed from the housing after it has been cured, it can be recycled with no fear of pollution. It becomes possible, and its utility value is greatly improved. Up to now, at construction sites using PVC pipe sleeves, attempts have been made to physically divide this into two parts or make cuts and then pull it out, but it has not been successfully put into practical use.

  The problem to be solved is that in the construction of through holes for water supply and drainage etc. in the concrete foundation of the building, when using a PVC pipe that is easy to use and inexpensive and does not cause the possibility of pollution, concrete is cast and cured. After that, first, the PVC pipe can be easily removed from the housing in its original shape and provided as a piping sleeve that can be repeatedly recycled.

  In order to achieve the above-mentioned object, a piping sleeve according to the invention of claim 1 is configured such that one end face of a polyvinyl chloride pipe is opened, and a fixture for fixing the one end face to a floor frame is attached to the inner face of the one end face. And a sealing lid that can be attached to the other end face, and a protrusion for removing the PVC pipe is provided at a symmetrical position on the inner face of the PVC pipe near the other end face, and is in close contact with the outer surface of the PVC pipe. A recyclable piping sleeve characterized in that a double-structure is formed by fitting a plastic veneer outer cylinder using polypropylene (hereinafter referred to as PP).

  In order to achieve the above-mentioned object, the invention according to claim 2 is the outer surface of the polyvinyl chloride pipe formed by joining the outer cylinder made of the PP material using a plastic veneer (trade name) and joining the plastic board sheet with a curing tape. Close to the airline in the seat, align the lines in the axial direction of the cylindrical sleeve, seal the air layer entrance in the seat with a curing tape around both ends, and the same as the cylindrical PVC pipe The recyclable piping sleeve according to claim 1, which is formed at a height of 5 mm.

  The piping sleeve (1) according to the first aspect of the present invention is a double-structured cylindrical body formed by closely fitting a plastic sleeve (2) with a high-rigidity PVC pipe (3). Since it can withstand the compressive stress of expansion due to the load of concrete and heat of hydration, the diameter of the cylinder is not reduced. On the other hand, when the heat of hydration is removed, the diameter of the pipe through-hole is expanded by the thermal contraction of the concrete, and the PVC pipe (3) is easily pulled out. PP veneer made of PP material has no adhesion to the concrete surface and is easy to peel off.

  The pipe sleeve (1) according to the invention of claim 2 is such that the outer cylinder (2) of the double-structured cylindrical body is made of plastic veneer, the peripheral openings of the upper and lower end surfaces are closed with the curing tape (9), and the sealed air layer is included. I let you. This sealed air layer, together with the high-rigidity PVC pipe (3), withstood the compressive stress of concrete loading and expansion due to heat of hydration, and exhibited the effect of not reducing the diameter of the double-structured cylindrical body. Neither Pravenia (21) nor curing tape (9) has adhesiveness to the concrete surface, and is optimal as a member that can be easily pulled out and peeled off.

  As described above, the piping sleeve (1) according to the first aspect of the invention has a double structure in which the high-rigidity plastic veneer outer cylinder (2) and the PVC pipe (3) are formed in close contact with each other. Since the concrete does not deform even when subjected to compressive stress due to expansion due to heat of hydration, and the concrete is cured, the diameter of the concrete through hole expands due to thermal contraction, so the PVC pipe (3) is pulled out from the concrete through hole. It is easy to peel off and remove the Pravenia outer cylinder (2), and the dual structure in which the Pravenia outer cylinder (2) and the PVC pipe (3) are formed in close contact is the best mode.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a recyclable piping sleeve (1). Since this example was implemented for floors, the piping sleeve (1) was shown in a standing state. The situation is shown in which the outer tube (2) made of Pravene is closely fitted to the PVC pipe (3) to form a recyclable piping sleeve (1). Three fixing tools (4) for fixing the PVC pipe (3) to the floor form are attached to one open end face of the PVC pipe (3). The fixture (4) is a rectangular long and thin metal plate bent at a right angle, and a nail-mounting hole (5) is made at the tip of the horizontal metal plate, and the back surface of the vertical metal plate is placed on the PVC pipe (3 The horizontal metal flat plate overlaps with one open end surface of the PVC pipe (3) and is formed at an equal angle with each other.

  The other end face of the PVC pipe (3) is provided with a lid (7) on which it can be attached. This is to prevent the concrete from entering when the concrete is placed. On the back surface of the lid (7), three insertion pieces (8) for projecting the lid (7) onto the inner surface of the PVC pipe (3) are projected. The outer periphery of the insertion piece (8) was formed so as to be substantially coincident with the arc of the inner surface of the PVC pipe (3) and adhered. Further, on the other end surface of the PVC pipe (3), a protrusion (6) for pulling out the PVC pipe (3) from the housing after concrete curing is provided at a symmetrical position perpendicular to the axis on the pipe inner surface. .

  FIG. 2 is a plan view of the pravene sheet (21), FIG. 3 is a front view of the outer tube (2) made of praveneer, and FIG. 4 is a top view of the outer tube (2) made of praveneer. The outer tube (2) made of Pravene was formed by joining rectangular plate (21). In the plan view of the plastic veneer sheet in FIG. 2, the lengths AB and CD are adjusted to the height of the PVC pipe (3), and the lengths of the horizontal AC and BD are adjusted to the outer peripheral length of the PVC pipe (3). The longitudinal AB line and the CD line were butted together with a curing tape to form an outer cylinder (2) made of Pravenia. Because the air layer streaks inside the pavé veneer are aligned in the axial direction of the outer cylinder (2), a curing tape (9) is placed around the upper and lower edges of the outer cylinder (2) to close the air layer opening. It is. Thereby, the elasticity of the air layer is maintained and the outer cylinder (2) is not easily peeled off from the casing.

  FIG. 5 is a front view of a double-structured cylinder formed by fitting a plastic veneer outer cylinder (2) to a PVC pipe (3), and FIG. 6 is a top view thereof. This double-structured cylinder is subjected to weighting due to the placement of concrete and the expansion force due to the heat of hydration of the concrete, but the inner air layer of the veneer of the outer cylinder (2) and the highly rigid PVC pipe (3 ) Does not reduce the diameter of the double-structured cylinder. When curing is completed, the diameter of the through-hole formed in the housing tends to expand due to thermal contraction, so the PVC pipe (3) can be easily pulled out, and the outer tube (2) can be easily peeled off from the concrete surface. The curing tape used for the formation of the prave veneer and the outer cylinder (2) is easy to peel off because there is no adhesion to the concrete surface.

  FIG. 7 is a side view of the lid (7), and FIG. 8 is a bottom view of the lid (7). The lid (7) is a double-layered cylinder formed by fitting a plastic veneer outer cylinder (2) to a PVC pipe (3) at a predetermined position, and then inserted into the PVC pipe (3). (8) is attached to the open end face on the side to which it is fixed. The crowning is performed by inserting three insertion pieces (8) on the inner cylindrical surface of the PVC pipe (3). After crowning, the outer cylinder (2) and the lid (7) are fixed with a curing tape to prevent the lid (7) from being detached. The lid (7) can prevent the concrete from entering the double-structured cylinder.

  9A is a front view of the fixture 4, FIG. 9B is a plan view thereof, FIG. 9C is a right side view thereof, FIG. 10A is a front view of the protrusion 6, and FIG. b) is a plan view of the same. The fixing tool (4) has a nail mounting hole (5) formed on one of two orthogonal surfaces of the PVC pipe (3), and a contact surface with the inner surface of the PVC pipe (3) is bonded and fixed. The protrusion (6) is used when the PVC pipe (3) is removed from the housing.

  As mentioned above, the floor is mainly described among the pipe holes of the concrete foundation, but it can also be applied to walls and beams.

  Plavenia outer cylinder (2) and PVC pipe (3) are recyclable, which saves resources and eliminates the need for disposal.

It is a perspective view of the sleeve (1) which can be recycled. It is a top view of a prabeneer sheet (21). It is a front view of an outer cylinder (2) made of Prabenya. It is a top view of an outer cylinder (2) made of Prabenya. It is a front view of the polyvinyl chloride pipe | tube (3) which closely fitted the outer cylinder (2) made from Plavene. It is a top view of the polyvinyl chloride pipe (3) which closely fitted the outer cylinder (2) made of Prabenya. It is a side view of a lid | cover (7). It is a bottom view of a cover (7). It is the front view (a) and the top view (b) of a fixing tool (4). It is the front view (a) and the top view (b) of protrusion (6).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Recyclable piping sleeve 2 Plastic pipe outer tube 3 PVC pipe 4 Fixture 5 Nail mounting hole 6 Protrusion 7 Lid 8 Inserting piece 9 Curing tape 21 Plastic board sheet A, B, C, D Plastic board sheet (21 ) Four corners

Claims (2)

In a piping sleeve used for the construction of a circular pipe hole in the floor of a concrete building, one end face of the PVC pipe is opened, and a fixture for fixing the one end face to the floor frame is attached to the inner face of the one end face. And a sealing lid that can be attached to the other end face, and is constructed by projecting a projection for pulling out the PVC pipe at a symmetrical position inside the PVC pipe near the other end face, and on the outer surface of the PVC pipe A recyclable piping sleeve characterized in that a double structure is formed by closely fitting a plastic veneer outer cylinder. The outer tube made of Prabenya is constructed by joining a Pravenia sheet with a curing tape, is in close contact with the outer surface of the PVC pipe, and the lines that separate the air layer in the sheet are aligned in the axial direction of the cylindrical sleeve, 2. A recyclable piping sleeve according to claim 1, wherein both ends are surrounded by a curing tape to seal the air layer entrance in the sheet and are formed at the same height as the cylindrical PVC pipe.

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