Drain trap

Abstract

To provide a drainage trap which is highly weather resistant and easy to maintain for a long period of time. [Solution] The container comprises a bottomed, cylindrical main body 5 having a side wall 51 on which a receiving pipe 2 for receiving liquid and a discharge pipe 3 for discharging liquid are formed, a removable partition 1 that separates the internal space 4 of the main body 5, and a lid 6 that closes the internal space 4 of the main body 5 and is removable from the main body 5, and at least the main body 5 is formed only from resin including polycarbonate-based resin.

Description

[Technical field]

[0001] The present invention relates to a drain trap provided in a drain path. [Background technology]

[0002] Drain traps are installed in drainage paths that drain liquids such as air conditioner drains into sewage manholes. A conventional drain trap is known that has a receiving pipe for receiving liquid and a discharge pipe for discharging liquid formed on its side wall, a bottomed cylindrical main body made of transparent resin, a removable lid for closing the internal space of the main body, and a removable partition for dividing the internal space into a storage space that communicates with the receiving pipe for storing liquid and a discharge space that communicates with the discharge pipe for discharging liquid (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2007 / 116531 Summary of the Invention [Problem to be solved by the invention]

[0004] The drain trap described in Patent Document 1 has a main body made of transparent resin, so that the degree of dirt on the inside of the main body and the partition can be visually confirmed, and when cleaning, the cover can be removed and the partition can be easily taken out. On the other hand, when the drain trap is used outdoors where it is easily exposed to wind and rain, the transparency may be lost, and it may become impossible to visually check the degree of dirt on the inside of the main body and the partition. For this reason, the conventional drain trap described in Patent Document 1 has room for improvement in terms of improving weather resistance.

[0005] Therefore, there is a demand for a drain trap that is highly weather resistant and easy to maintain over the long term. [Means for solving the problem]

[0006] The characteristic configuration of the drain trap of the present invention is that it comprises a bottomed, cylindrical main body having a side wall formed with a receiving pipe section for receiving liquid and a discharge pipe section for discharging liquid, a removable partition body that separates the internal space of the main body, and a removable lid section that closes the internal space of the main body, with at least the main body section being formed from a transparent, weather-resistant resin.

[0007] In the present configuration, by constructing at least the main body from a transparent resin, it is possible to improve the visibility of the internal space of the main body and to check the degree of dirt on the inner surface of the main body and the partition. Moreover, since the lid is removable, it is possible to clean the removable partition, etc., making maintenance extremely easy.

[0008] However, drain traps installed in drain pipes of air conditioners, etc., are often exposed to the outside air, and repeated exposure to wind and rain can impair the transparency of the main body. As a result, it becomes impossible to visually check the degree of dirt on the drain trap, and it may become difficult to determine whether cleaning is necessary. By constructing at least the main body from a weather-resistant resin as in this configuration, the inconvenience of impairing the transparency of the main body can be prevented, and maintenance can be easily performed over the long term. In this way, a drain trap that is highly weather-resistant and easy to maintain over the long term can be provided.

[0009] The characteristic configuration of the drain trap of the present invention is that it comprises a bottomed, cylindrical main body having a side wall formed with a receiving pipe section for receiving liquid and a discharge pipe section for discharging liquid, a removable partition body that separates the internal space of the main body, a removable lid section that closes the internal space of the main body, and a protective case that covers the outer surface of the main body, wherein the protective case and the main body are transparent, and at least the protective case is formed from a weather-resistant resin.

[0010] By configuring both the protective case and the main body to be transparent, as in this configuration, the visibility of the internal space of the main body is improved, and it is possible to check the degree of dirt on the inner surface of the main body and the partition. In addition, since the lid is removable, it is possible to clean the removable partition, etc., making maintenance extremely easy. Furthermore, by providing a protective case on the main body, the durability of the main body can be increased.

[0011] However, drain traps installed in drain pipes of air conditioners and the like are often exposed to the outside air, and the transparency of the protective case is impaired by repeated exposure to wind and rain. As a result, it becomes impossible to visually check the degree of dirt on the drain trap, and it may become impossible to determine whether cleaning is necessary. By constructing at least the protective case from a weather-resistant resin as in this configuration, the inconvenience of the transparency of the protective case being impaired is prevented, and maintenance can be easily performed over a long period of time. In this way, a drain trap that is highly weather-resistant and easy to maintain over a long period of time can be provided.

[0012] Another characteristic feature is that the weather-resistant resin contains a polycarbonate-based resin.

[0013] If the weather-resistant resin contains a polycarbonate-based resin as in the present configuration, it is possible to reliably prevent the inconvenience of the transparency of the polycarbonate-based resin being impaired due to repeated exposure to wind and rain. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a vertical cross-sectional view of the drain trap. [Diagram 2] FIG. [Diagram 3] FIG. 2 is an external perspective view of the drain trap. [Figure 4] FIG. 11 is an exploded perspective view of a drain trap according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the drain trap according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0016] As shown in Figs. 1 to 3, the drain trap X includes a bottomed cylindrical main body 5 having a side wall 51 formed with a receiving pipe 2 for receiving liquid and a discharge pipe 3 for discharging the liquid, a lid 6 for closing an internal space 4 of the main body 5, and a partition 1 for dividing the internal space 4 into a storage space 7 for receiving and storing liquid from the receiving pipe 2 and a discharge space 8 communicating with the discharge pipe 3 for discharging the liquid. The drain trap X further includes a sealed case 9 (an example of a protective case) for sealingly surrounding at least a part of the side wall 51 of the main body 5 and a bottom 52 of the main body 5 (at least a part of the outer surface of the main body 5 in which the storage space 7 is formed). Hereinafter, the lid 6 side may be referred to as the top, and the bottom 52 side of the main body 5 as the bottom.

[0017] The main body 5 is molded using a weather-resistant polycarbonate resin, and is formed into a cylindrical shape with a flat bottom 52. The receiving pipe 2 and the discharge pipe 3 are formed integrally with the side wall 51 as flow paths extending horizontally from the side wall 51, and are connected at opposing positions on the side wall 51 of the main body 5. A height difference is provided between a connection point 2A of the receiving pipe 2 and a connection point 3A of the discharge pipe 3 such that the receiving pipe 2 is higher than the discharge pipe 3 by a small predetermined value (for example, 5 mm).

[0018] The lid 6 is formed in a circular shape in a plan view, and can be attached to the main body 5 by screwing together a threaded portion 18 formed on the outer peripheral surface of the main body 5 and the inner peripheral surface of the lid 6 (see FIG. 1). In addition, a plurality of convex portions 6a protruding radially outward at equal intervals are formed on the outer periphery of the lid 6, and the lid 6 can be easily attached to the main body 5 by hooking the user's fingers on the convex portions 6a (see FIGS. 2 and 3). The lid 6 is configured to be detachable when the sealed case 9 is attached to the main body 5.

[0019] The partition 1 is composed of a cylindrical first partition 10 and a plate-like second partition 11 extending outward from the first partition 10 over the entire circumferential circumference. The first partition 10 has a notch 12 in an area above the second partition 11, where a part of the circumferential direction is cut out along the up-down direction.

[0020] The partition 1 is detachably attached to the internal space 4 of the main body 5, and when attached to the internal space 4 of the main body 5, it divides the lower side of the internal space 4 of the main body 5 into a storage space 7 and the upper side of the internal space 4 into a discharge space 8. In this way, the partition 1 divides the internal space 4, so that the entire bottom 52 of the main body 5 becomes the storage space 7. In addition, the partition 1 has a ball-shaped valve body 15 that rises to allow liquid to flow from the storage space 7 to the discharge space 8 when a set amount or more of liquid is stored in the storage space 7, and a valve seat 16 that receives and supports the valve body 15. The valve seat 16 is formed in a ring shape arranged in the internal space of the first partition 10. The valve body 15 is configured as a normally closed type that closes the opening part of the ring-shaped valve seat 16.

[0021] Between the lid 6 and the partition 1 attached to the internal space 4, there is provided a shielding member 17 that adheres closely to the lid 6 and has a small coefficient of friction between the lid 6 and the partition 1. The shielding member 17 is formed in a disk shape from a resin such as silicone. The upper surface of the shielding member 17 that comes into contact with the lid 6 adheres closely to the rear surface of the lid 6 by a suction cup effect. The lower surface of the shielding member 17 that comes into contact with the partition 1 attached to the internal space 4 is subjected to a sliding process to reduce the coefficient of friction between the lower surface of the shielding member 17 and the partition 1.

[0022] When the lid portion 6 is attached to the main body portion 5, a sealing portion 14 is provided between the partition body 1 and the side wall 51 of the main body portion 5, which receives a pressing force from the lid portion 6 in the vertical direction and seals a part of the partition body 1 by applying a force component along the vertical direction around the entire circumference of the side wall 51.

[0023] The main body 5 and the partition 1 are transparent, and the valve body 15 has a color (e.g., blue) that can be distinguished from the main body 5 and the partition 1. This allows an operator to visually confirm the position of the valve body 15 from the outside of the main body 5 when the partition 1 is attached to the internal space 4 of the main body 5. This makes it easy to check whether the partition 1 is attached in the correct position and to check the degree of dirt on the partition 1. Here, "transparent" refers to a state in which the inside of the main body 5 can be seen through, and includes colorless transparent or colored transparent, as well as translucent.

[0024] The sealed case 9 is attached to the outside of the main body 5 and is made of the same transparent weather-resistant polycarbonate resin as the main body 5. The sealed case 9 surrounds almost the entire area of ​​the side wall 51 of the main body 5 and the bottom 52 of the main body 5 in a sealed state, and a gap 91 with air between it and the sealed case 9 and the main body 5 is formed. As a result, even if there is a temperature difference between the liquid stored in the storage space 7 on the bottom 52 side of the main body 5 and the outside air, the gap 91 can suppress the occurrence of condensation. In addition, the connection portion 2A between the side wall 51 and the receiving pipe portion 2 and the connection portion 3A between the side wall 51 and the discharge pipe portion 3 are covered by the sealed case 9 with the gap 91 formed between them. Since liquid tends to accumulate at the connection points 2A, 3A between the receiving pipe 2 and the discharge pipe 3 and the side wall 51, forming a gap 91 between the connection points 2A, 3A and the sealed case 9 as in this embodiment can reliably prevent condensation from forming on the surfaces of the receiving pipe 2 and the discharge pipe 3. In addition, the sealed case 9 also has the function of protecting the main body 5.

[0025] The weather-resistant resin forming the main body 5 and the sealed case 9 may be composed of polycarbonate-based resin, vinyl chloride-based resin, acrylic-based resin, fluorine-based resin, polystyrene-based resin, polyethylene-based resin, ABS-based resin (acrylonitrile, butadiene, styrene copolymer synthetic resin), or a combination of these. The weather resistance of the weather-resistant resin may be improved by mixing a UV absorber or an antioxidant with a resin having low weather resistance and molding the mixture, or by mixing a resin having low weather resistance with a new resin other than the above-mentioned resin and molding the mixture.

[0026] In this way, since the sealed case 9 is formed from the same transparent resin material as the main body 5, the transmittance of the sealed case 9 and the main body 5 is the same, and since there is air between the sealed case 9 and the main body 5, an operator can easily visually confirm the position of the valve body 15 from outside the main body 5. Furthermore, since the cover 6 is configured to be removable, it is possible to clean the removable partition body 1, etc., making maintenance extremely easy.

[0027] Furthermore, the drain trap X provided in the drain pipe of an air conditioner or the like is often exposed to the outside air, and the transparency of the main body 5 and the sealed case 9 is impaired by repeated exposure to wind and rain. As a result, it becomes impossible to visually check the degree of dirt on the drain trap X, and it may become impossible to determine whether cleaning is necessary. If at least the sealed case 9 is made of a weather-resistant resin as in this embodiment, the inconvenience of the transparency of the sealed case 9 being impaired is prevented, and maintenance can be easily performed over the long term.

[0028] The sealed case 9 comprises multiple (two in this embodiment) partitions 92 separated from each other, a cup-shaped bottom side connecting member 93 that connects the pair of partitions 92 from the bottom 52 side (storage space 7 side), and a cylindrical lid side connecting member 94 that connects the pair of partitions 92 from the lid 6 side (the side opposite the bottom side connecting member 93).

[0029] The divided body 92 is composed of a first divided body 92A and a second divided body 92B, and these first divided body 92A and second divided body 92B are formed symmetrically with respect to the pipe axis direction Y of the receiving pipe section 2 and the discharge pipe section 3. In other words, these first divided body 92A and second divided body 92B are in a half-split shape that is joined to each other from the side of the main body section 5. The first divided body 92A and the second divided body 92B each have a flat joint surface 92a along the pipe axis direction Y, an arc-shaped first contact surface 92b that is in close contact with the outer circumferential surface of the receiving pipe section 2, and an arc-shaped second contact surface 92c that is in close contact with the outer circumferential surface of the discharge pipe section 3. The first contact surface 92b and the second contact surface 92c are in close contact with the outer circumferential surfaces of the receiving pipe section 2 and the discharge pipe section 3, respectively, thereby preventing air in the gap 91 from leaking to the outside.

[0030] In the sealed case 9 in this embodiment, the arc-shaped first contact surface 92b that comes into close contact with the outer circumferential surface of the receiving pipe 2 and the arc-shaped second contact surface 92c that comes into close contact with the outer circumferential surface of the discharge pipe 3 may be brought into close contact with intermediate portions along the pipe axis direction Y of the receiving pipe 2 and the discharge pipe 3, respectively. This ensures a large gap 91 between the sealed case 9 and the receiving pipe 2 and the discharge pipe 3 in the main body 5, so that condensation formed on the surfaces of the receiving pipe 2 and the discharge pipe 3 can be more reliably prevented.

[0031] An annular sealing surface 92g that protrudes radially inward is formed on the upper end of each of the first and second divisions 92A and 92B, and the annular sealing surface 92g is in close contact with the outer surface of the main body 5, thereby preventing air in the gap 91 from leaking to the outside.

[0032] In this embodiment, a gap 91 is formed between the sealed case 9, which surrounds almost the entire area of ​​the side wall 51 and the bottom 52 of the main body 5, and the main body 5. Therefore, even if there is a temperature difference between the liquid stored in the storage space 7 on the bottom 52 side of the main body 5 and the outside air, the gap 91 can suppress the occurrence of condensation. As a result, it is possible to prevent inconveniences such as water droplets falling and flooding the surrounding area. In addition, since liquid is likely to accumulate at the connection points 2A and 3A between the receiving pipe 2 and the discharge pipe 3 and the side wall 51, if a gap 91 is formed between the connection points 2A and 3A and the sealed case 9 as in this embodiment, condensation formed on the surfaces of the receiving pipe 2 and the discharge pipe 3 can be reliably prevented. Moreover, since the sealed case 9 in this embodiment forms an integrated unit with a continuous appearance with the main body 5, it has excellent aesthetics and high durability, and the drain trap X can be used for a long time.

[0033] As in this embodiment, by aligning the joint surface 92a of the divided body 92 with the pipe axis direction Y of the receiving pipe section 2 and the discharge pipe section 3, the sealed case 9 can be attached from the side of the receiving pipe section 2 and the discharge pipe section 3, which makes attachment easy. In addition, when forming the gap 91 between the sealed case 9 and the main body section 5, by providing a bottom side connecting member 93 and a lid side connecting member 94 on the bottom side and the lid side, manufacturing the drain trap X becomes extremely easy.

[0034] [Another embodiment] (1) The sealed case 9 in the above-described embodiment may be omitted, and the main body 5 may be made of weather-resistant resin. Also, in the above-described embodiment, the main body 5 and the sealed case 9 are made of weather-resistant resin, but only the sealed case 9 may be made of weather-resistant resin. This sealed case 9 may be provided only in an area where the partition 1 is visible. This ensures at least the visibility of the removable partition 1 for a long period of time. (2) The gap 91 between the sealed case 9 and the main body 5 may be eliminated, and the sealed case 9 and the main body 5 may be brought into close contact with each other.

[0035] (3) Figure 4 shows a drain trap X according to another embodiment. To facilitate understanding of the drawings, the same names and symbols are used for similar components, and only different configurations will be described. As shown in the figure, the sealed case 9 may be omitted, and a pair of second partitions 11 of the partition body 1 may be fitted into vertical grooves 21 formed on the inner surface of the main body 5, and the cutout portion 12 may be formed of a plurality of openings. Also, a resin receiving body 19 placed on the valve seat 16 may be provided.

[0036] (4) The valve body 15 in the above-described embodiment may be configured as a plate-like body that can swing freely around a horizontal axis, and the valve body 15 may be configured to open when wastewater flows from the receiving pipe section 2 to the discharge pipe section 3 and to close when wastewater does not flow from the receiving pipe section 2 to the discharge pipe section 3. In other words, any form may be used as long as it is a detachable partition body 1 that separates the internal space of the main body section 5. (5) Although the divided body 92 of the sealed case 9 is formed symmetrically with respect to the pipe axis direction Y of the receiving pipe portion 2 and the discharge pipe portion 3, the divided body 92 of the sealed case 9 may be divided into two in the vertical direction. (6) Sealing members may be provided on the joining surface 92a and the contact surfaces 92b and 92c. (7) The gap 91 may be formed as a vacuum.

[0037] (8) In the above embodiment, the bottom 52 of the main body 5 is flat and the entire bottom 52 of the main body 5 is used as the storage space 7. However, it is also possible to appropriately change the shape of the bottom 52 of the main body 5, such as by providing a step in the bottom 52 of the main body 5, so that a portion of the bottom 52 of the main body 5 is used as the storage space 7.

[0038] (9) In the above embodiment, the shape of the side wall 51 of the main body 5 and the shape of the partition 1 in a planar view are approximately elliptical. However, they may also be rectangular, for example, and the shape may be changed as appropriate. [Industrial Applicability]

[0039] The present invention can be applied to a drain trap having a cylindrical body with an internal space communicating with a receiving pipe section and a discharge pipe section, and a partition body that separates the internal space of the body. [Explanation of symbols]

[0040] 1: Partition 2: Receiving pipe section 3: Discharge pipe section 4: Interior space 5: Main body 51: Side wall 6: Lid 9: Sealed case (protective case) X: Drain trap

Claims

1. a cylindrical main body having a bottom and a receiving pipe for receiving liquid and a discharge pipe for discharging liquid formed on a side wall; A removable partition that divides an internal space of the main body; a cover portion that closes an internal space of the main body portion and is detachable from the main body portion, A drain trap, wherein at least the main body portion is formed only from a resin containing a polycarbonate-based resin.

2. a cylindrical main body having a bottom and a receiving pipe for receiving liquid and a discharge pipe for discharging liquid formed on a side wall; A removable partition that divides an internal space of the main body; A cover portion that closes an internal space of the main body portion and is detachable from the main body portion; a protective case for covering an outer surface of the main body; The protective case and the main body are transparent, A drain trap in which at least the main body and the protective case are formed only from a resin containing a polycarbonate-based resin.

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