Odor-proof valve structure

Abstract

To provide an odor-blocking valve structure that allows easy attachment and detachment of an odor-blocking valve to a drain pipe.SOLUTION: An L-shaped slit is provided in a wall forming a drain outlet, extending from the downstream end of the wall in the upstream direction and then in the circumferential direction, an odor-blocking valve comprises a circular tubular body part having an outer peripheral dimension the same as the inner periphery of the drain outlet, and a cover part supported pivotally on the body part to close the outlet of the body part, a protruding stopper piece is provided on the outer periphery of the downstream end portion of the body part, and the odor-blocking valve is attached by aligning the stopper piece with the slit, inserting it into the drain outlet, and then rotating it so that the stopper piece engages with the slit.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an odor control valve structure in which an odor control valve is provided in a drain pipe through which wastewater flows into a grease trap (interceptor) or the like placed on the floor of a kitchen. [Background technology]

[0002] BACKGROUND ART Conventionally, it has been known to provide an odor control valve in a drain pipe that drains wastewater into a grease trap or the like placed on the kitchen floor to suppress odors and the intrusion of pests from the grease trap into the kitchen. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-104251 Summary of the Invention [Problem to be solved by the invention]

[0004] The odor control valve described in Patent Document 1 above is attached to poured concrete, etc., but attaching and removing the odor control valve is complicated, and the odor control valve cannot be easily attached or removed.

[0005] The present invention aims to make it possible to easily attach and detach an odor control valve to a drain pipe. [Means for solving the problem]

[0006] In one embodiment, an odor control valve is provided at the end of a drain pipe, and the odor control valve is provided at the wall forming the drain outlet. To circumnavigation The odor control valve has an L-shaped notch extending in the direction of the drain outlet, and the odor control valve has a cylindrical main body having the same outer circumferential dimension as the inner circumferential dimension of the drain outlet. In the direction of opening and closing along the axial direction of the drain pipeThe cap is supported so as to be swingable and closes the outlet of the main body, and a stopper piece is provided at the downstream end of the main body, protruding from the outer periphery. The stopper piece is aligned with the notch, Insert the stopper piece into the axial groove of the drain pipe in the L-shaped notch. Insert , then in the circumferential direction of the drain pipe Rotate and engage with the circumferential groove of the drain pipe. By doing so, the anti-slip piece is engaged with the notch and attached, When the anti-slip piece is engaged with the notch and the odor control valve is attached to the drain outlet, the swing fulcrum of the lid part is positioned above the lid part, and the anti-slip piece of the odor control valve protrudes from the outer periphery of the wall that forms the drain pipe while engaged with the notch. It has an odor-proof valve structure. [Effects of the Invention]

[0007] According to the odor control valve structure of this embodiment, the odor control valve can be easily attached to and detached from the drain pipe. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a side view of a grease trap employing an odor prevention valve structure according to an embodiment of the present invention in use; [Figure 2] 1A is a view of a grease trap in which an odor prevention valve structure according to one embodiment is employed, as seen from the downstream side, and FIG. 1B is a perspective view of a cover member of a trap device. [Figure 3] This is a diagram to explain the flow of wastewater in a grease trap in which one embodiment of the odor prevention valve structure is used, where (a) is a side view of the grease trap and (b) is a plan view of the grease trap. [Figure 4] 1A and 1B are diagrams of an embodiment of an odor control valve structure, in which (a) is a perspective view before the odor control valve is attached, and (b) is a perspective view after the odor control valve is attached. [Figure 5] 4A and 4B are diagrams of an embodiment of the odor prevention valve structure, in which (a) is a longitudinal cross-sectional view of the socket (XX cross-sectional view in FIG. 4), (b) is a longitudinal cross-sectional view of the odor prevention valve, (c) is a view from the downstream side of the process of attaching the lid to the socket, (d) is a transverse cross-sectional view of the socket (YY cross-sectional view in FIG. 4), (e) is a longitudinal cross-sectional view of the state in which the odor prevention valve has been attached to the socket, and (f) is a view from the downstream side of the state in which the odor prevention valve has been attached to the socket. [Figure 6]This is an exploded view of one embodiment of an odor control valve, where (a) is an oblique view of the main body, (b) is an oblique view of the lid, (c) is a longitudinal cross-section of the main body, (d) is a longitudinal cross-section of the lid, (e) is a view of the main body from the downstream side, and (f) is a view of the lid from the downstream side. DETAILED DESCRIPTION OF THE INVENTION

[0009] First, a grease trap (interceptor) in which an odor prevention valve structure according to one embodiment is employed will be described with reference to the drawings. As shown in Figure 1, grease trap 1 is a device that is buried in the floor of a kitchen, for example, to receive wastewater from a drainage channel A installed on the floor, remove oil, grease, solids, etc. from the wastewater, and then discharge it into sewer B. In the following description, the drainage channel A side of the grease trap 1 is referred to as the upstream side, and the sewer B side is referred to as the downstream side.

[0010] A portion of the concrete floor C of the kitchen has been removed to provide an installation space, and a grease trap 1 is placed in the installation space, with lids D, D placed above the grease trap 1. Drainage channel A has a drain pipe A1 arranged therein, and an odor control valve 5 is attached to the outlet of drain pipe A1 leading to grease trap 1 to prevent unpleasant odors from entering the kitchen. By opening the lid D, the user can expose the top of the grease trap 1 and perform maintenance such as removing oils, grease, and solids that have separated from the wastewater, as well as perform maintenance on the odor control valve 5 attached to the drain outlet of the drain pipe A1.

[0011] -Configuration of grease trap- As shown in FIG. 1, the grease trap 1 of this embodiment includes a main tank 11, a partition plate 12, a receiving basket 13, a trap device 14, and a cover member 15.

[0012] The main tank 11 that constitutes the grease trap 1 is made of a metal material such as stainless steel, and as shown in Figures 1 and 2(a), is an overall rectangular box-shaped member having an upstream wall 11a located on the upstream side, a downstream wall 11b located on the downstream side, left and right side walls 11c, 11c, and a bottom wall 11d, and a drain pipe B1 that connects to the sewer B is attached to the lower part of the downstream wall 11b.

[0013] The main tank 11 has flange portions f on the upstream wall 11a, downstream wall 11b, and the upper ends of the left and right side walls 11c, 11c, and the flange portions f are placed on the top surface of the concrete C floor located on the periphery of the installation space.

[0014] The partition plate 12 that constitutes the grease trap 1 is made of a metal material such as stainless steel, and as shown in Figure 1, is a plate-shaped member with a handle 12a on the top.It is attached to the main tank 11 at a position approximately one-third of the way from the upstream wall 11a in the upstream / downstream direction so as to separate the upstream and downstream sides. The grease trap 1 has a wastewater inlet section 1a formed on the upstream side of the partition plate 12, into which wastewater flows in from the drainage channel A, and a separation section 1b formed on the downstream side of the partition plate 12, which separates and retains oils, grease, etc. from the wastewater.

[0015] As shown in FIGS. 1 and 2(a), the partition plate 12 is attached by partition plate guides 12b, 12b provided on the inner peripheral surfaces of the left and right side walls 11c, 11c of the main tank 11 so as to be freely removed upward. A partition plate 12 attached to the main tank 11 separates the wastewater inlet section 1a and the separation section 1b in an upper region, and communicates them in a lower region.

[0016] The receiving basket 13 that constitutes the grease trap 1 is made of a metal material such as stainless steel, and as shown in Figure 1, has a basket portion 131 and a handle 132.It is positioned and placed within the wastewater inlet portion 1a, receives the wastewater flowing in from the drainage channel A, and captures solid matter such as food scraps contained in the wastewater.

[0017] The trap device 14 that constitutes the grease trap 1 is made of a resin material such as polyvinyl chloride, and as shown in Figures 1 and 2(a), a bowl trap can be used that has a drain pipe 141 having an overflow hole 141a at a predetermined height and a bowl member 142 attached to the top of the drain pipe 141 so as to hide the overflow hole 141a of the drain pipe 141, and is positioned downstream of the separation section 1b, with the lower end of the drain pipe 141 connected to the drain pipe B1.

[0018] The cover member 15 that constitutes the grease trap 1 is made of a metal material such as stainless steel, and as shown in Figures 1 and 2, has an upstream wall portion 15a and left and right side wall portions 15c, 15c, and is a member with a roughly U-shaped cross section with a height dimension approximately the same as the depth dimension of the main tank 11, and the downstream lower end positions of the left and right side wall portions 15c, 15c are missing to form drainage inlets 15d, 15d.

[0019] The cover member 15 is positioned so that the downstream ends of the left and right side wall portions 15c, 15c abut or are close to the downstream wall 11b of the main tank 11, covering the trap device 14. Wastewater heading toward the trap device 14 is mainly introduced through drainage inlets 15d, 15d formed at the lower downstream end position, and oils and fats that have floated and separated in the separation section 1b are prevented from being drained beyond the overflow hole 141a of the drain tube 141 of the trap device 14. The cover member 15 has handles 15e and 15f on the top, and can be removed from the main tank 11 during maintenance. The overall configuration of the grease trap has been described above.

[0020] -Wastewater flow and removal of grease and oil- Next, the flow of wastewater in the grease trap and the removal of grease will be described. The wastewater to be treated that has entered through the drainage channel A flows into the wastewater inlet 1a of the grease trap 1 (arrow w1), as shown in Figure 3(a), and solid matter such as food scraps in the wastewater is captured by the receiving basket 13 arranged in the wastewater inlet 1a, after which the wastewater flows out through the drainage hole in the receiving basket 13.

[0021] 3(a)(b), the wastewater flowing out from the drainage hole of the receiving basket 13 flows downward through the wastewater inlet section 1a, passes under the partition plate 12 and enters the separation section 1b (arrow w2), and the oil contained in the wastewater rises to the water surface due to the difference in specific gravity and is separated from the water. The oil separated from the wastewater is stored near the water surface in the separation section 1b. Furthermore, the relatively small solid matter that passes through the receiving basket 13 settles by gravity and accumulates as sludge on the bottom of the main tank 11, where it is separated from the wastewater.

[0022] As shown in Figures 2(a) and 3(a) and (b), the wastewater from which grease and solids have been removed is introduced into the cover member 15 through wastewater inlets 15d, 15d formed on the downstream lower side of the side wall portions 15c, 15c of the cover member 15 covering the trap device 14 (arrow w3). The wastewater introduced into the cover member 15 flows over the overflow hole 141a of the drain tube 141 of the trap device 14 (arrow w4), and is drained into the sewer B via the drain tube 141 and the drain pipe B1. The above has explained the flow of wastewater in a grease trap and the removal of grease.

[0023] -Odor-proof valve structure- Next, the odor control valve structure in which an odor control valve is attached to the drain pipe A1 through which wastewater flows into the grease trap 1 will be described with reference to the drawings.

[0024] The odor control valve structure of this embodiment includes a socket 9 attached to the end of a drain pipe A1, and an odor control valve 5 attached to the inside of the drain outlet of the socket 9, as shown in FIG.

[0025] The socket 9 is made of a resin material such as polyvinyl chloride, and as shown in Figures 4 and 5(a)(d), is a cylindrical member having an inlet and an outlet, and is provided with a ring-shaped rib 9a that protrudes inward at a predetermined position in the longitudinal direction.

[0026] The socket 9 has an L-shaped notch 91 in the wall forming the outlet (drainage port), which consists of an entrance passage 91a that runs upstream from the downstream end and an engagement passage 91b that runs circumferentially from the upstream side of the entrance passage 91a toward the bottom of the socket 9, and the tip of the engagement passage 91b of the notch 91 reaches the lower end of the socket 9.

[0027] The odor prevention valve 5 is made of a resin material such as polyvinyl chloride, and as shown in Figures 4(a) and 5(b), it has a short, cylindrical main body 51 with an inlet and an outlet and an outer circumferential dimension that is the same as the inner circumferential dimension of the socket 9, and a lid 52 attached to the downstream (outlet) side of the main body 51 to allow the outlet to be opened and closed freely.

[0028] As shown in Figures 6(a), (c), and (e), the main body 51 of the odor control valve 5 has an inlet formed on a plane perpendicular to the axis of the main body 51, and an outlet formed on a plane that intersects the plane perpendicular to the axis of the main body 51 at an acute angle, i.e., the outlet of the main body 51 is formed on an inclined plane that is positioned closer to the outlet as it goes from top to bottom. The main body 51 has a stopper piece 51a, which projects downward from the outlet side end, provided at the lower end on the outlet side by welding or the like.

[0029] As shown in Figures 6(b), (d), and (f), the lid portion 52 of the odor control valve 5 has a lid support portion 521 fixed to the upper portion of the outlet end of the main body portion 51 by welding or the like, and a lid body 522 supported by the lid support portion 521 so as to be able to swing freely by a hinge 523, and a weight 524 attached to the lower portion of the lid body 522 by a bolt or the like as necessary. The lid portion 52 has a shape similar to the shape of the outlet side opening of the main body portion 51, has dimensions larger than the inner diameter dimension of the outlet side opening of the main body portion 51, and has dimensions smaller than the outer diameter dimension of the outlet side of the main body portion 51.

[0030] As shown in Figure 5(b), the lid portion 52 has a lid support portion 521 fixed to the upper portion of the outlet side end of the main body portion 51, so that the lid body 522, which is supported so as to be freely swingable by the lid support portion 521, abuts against the outlet side edge of the main body portion 51 due to its own weight, thereby blocking the outlet of the odor-proof valve 5.

[0031] When attaching the odor prevention valve 5 to the socket 9, the user aligns the odor prevention valve 5 so that the anti-slip piece 51a enters the notch 91 formed in the socket 9, as shown in Figure 4(a), and inserts the odor prevention valve 5 from the drain outlet (outlet) of the socket 9 toward the inlet (arrow y1). In addition, the user can also rotate the odor prevention valve 5 while pressing it upstream while it is half-inserted into the drain outlet of the socket 9 (with the anti-slip piece 51a abutting the outlet side edge of the socket 9), causing the anti-slip piece 51a to enter the notch 91 when it matches the position of the notch 91 formed in the socket 9.

[0032] Then, as shown in Figures 5(c) and (e), the user inserts the odor prevention valve 5 into the drain outlet of the socket 9 until the inlet end of the main body 51 abuts the rib 9a formed on the inner circumference of the socket 9. When the inlet end of the main body 51 of the odor prevention valve 5 abuts against the rib 9a of the socket 9, the anti-slip piece 51a is inserted into the entry path 91a of the notch 91 to a position opposite the entrance of the engagement path 91b.

[0033] The user then rotates the odor prevention valve 5 (arrow y2) so that the anti-slip piece 51a enters the engagement path 91b of the notch 91, as shown in Figure 5(c), and then abuts the anti-slip piece 51a against the tip of the engagement path 91b of the notch 91, as shown in Figures 4(b) and 5(f), thereby attaching the odor prevention valve 5 to the socket 9.

[0034] When the odor prevention valve 5 is attached to the socket 9, the anti-slip piece 51a of the odor prevention valve 5 remains in contact with the tip of the engagement path 91b of the notch 91, and further rotation is prevented, thereby positioning the odor prevention valve 5. When the odor-proof valve 5 is attached to the socket 9, the hinge (swing fulcrum) 523 supporting the lid body 522 is positioned above the lid body 522, and the end face of the outlet formed at an angle in the main body 51 is blocked by the lid body 522, allowing the lid body 522 to block the outlet and to open smoothly.

[0035] -Effects of the odor prevention valve structure of this embodiment- The odor control valve structure of this embodiment can be easily installed by inserting the odor control valve 5 into the socket 9 connected to the drain pipe A1 and rotating it, without using any fixing means such as screws, and can also be easily removed by performing the opposite operation, making it easy to install and maintain.

[0036] In the odor control valve structure of this embodiment, the lid portion 52 is automatically positioned by attaching the odor control valve 5 to the socket 9, so the odor control valve 5 can be easily attached without requiring any special equipment or techniques. In the odor prevention valve structure of this embodiment, the odor prevention valve 5 is installed by inserting it until it abuts against the rib 9a provided on the inner circumference of the socket 9, so that no gaps or the like are created between the socket 9 and the odor prevention valve 5, and the accumulation of residue inside the socket 9 can be prevented.

[0037] -Other embodiments- The drain outlet that constitutes the odor-proof valve structure is not limited to a socket 9 attached separately to the end of the drain pipe A1; the end of the drain pipe A1 may be used as the drain outlet of the odor-proof valve structure, or a notch 91 may be provided directly at the end of the drain pipe A1.

[0038] The positions of the notch 91 provided in the socket 9 and the anti-slip piece 51a provided in the odor control valve 5 are not limited to the vicinity of the drain outlet and the lower end of the odor control valve 5, but are not particularly limited as long as the odor control valve 5 can be attached by inserting and rotating the odor control valve 5 into the socket 9, and the swing fulcrum of the cover body 522 can be positioned above the cover body 522 when attached.

[0039] There are no restrictions on the materials used for the components that make up the odor prevention valve structure, as long as the material can be attached to a drain outlet and function as an odor prevention valve. The drain pipes in which the odor control valve is used are not limited to those that drain wastewater into grease traps.

[0040] Although the embodiments of the present invention have been described above, the present invention is not limited to these, and various modifications can be made within the scope of the present invention. [Explanation of symbols]

[0041] 5: Odor prevention valve, 51: Main body, 51a: Anti-slip piece, 52: Lid, 9: Socket, 9a: Rib, 91: Notch, A1: Drain pipe

Claims

1. An odor control valve structure in which an odor control valve is provided at the end of a drain pipe, The wall forming the drain outlet is provided with an L-shaped notch extending from a downstream end of the wall in an upstream direction and then in a circumferential direction; The odor control valve has a cylindrical main body having the same outer circumferential dimensions as the inner periphery of the drain outlet, and a lid supported on the main body so as to be able to swing freely in the opening and closing direction in the axial direction of the drain pipe, thereby blocking the outlet of the main body. The downstream end of the main body is provided with a stopper piece that protrudes outward, and the stopper piece is aligned with the notch and inserted into the axial groove of the drain pipe in the L-shaped notch, and then rotated circumferentially around the drain pipe to engage with the circumferential groove of the drain pipe, thereby engaging the stopper piece with the notch and attaching it. When the stopper piece is engaged with the notch and the odor control valve is attached to the drain outlet, the swing fulcrum of the lid part is positioned above the lid part, An odor prevention valve structure in which the anti-slip piece of the odor prevention valve protrudes from the outer periphery of the wall forming the drain pipe while engaged with the notch.

2. A socket is attached to the end of the drain pipe; 2. The odor prevention valve structure according to claim 1, wherein the socket forms the drain opening.

3. An odor control valve structure as described in claim 1 or 2, wherein the drain outlet has an inner periphery having a rib protruding inward, and when the odor control valve is attached to the drain outlet, the upstream end face of the main body of the odor control valve abuts against the rib.

Images