CN109518791A - A kind of long-acting odor-proof drain structure - Google Patents

A kind of long-acting odor-proof drain structure Download PDF

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Publication number
CN109518791A
CN109518791A CN201811351830.3A CN201811351830A CN109518791A CN 109518791 A CN109518791 A CN 109518791A CN 201811351830 A CN201811351830 A CN 201811351830A CN 109518791 A CN109518791 A CN 109518791A
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China
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wall
isolation cover
fixed
long
drain structure
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CN201811351830.3A
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Chinese (zh)
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CN109518791B (en
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宋瑾钰
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Zhejiang Sci Tech University ZSTU
Zhejiang University of Science and Technology ZUST
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Zhejiang Sci Tech University ZSTU
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0407Floor drains for indoor use

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

The present invention relates to bath articles technical fields, disclose a kind of long-acting odor-proof drain structure, including floor drain shell, lid, the lid is equipped with inlet opening, the lower end of the floor drain shell is equipped with bracing ring, cricoid water seal cup is fixed on the upside of the bracing ring, the center of the water seal cup is equipped with liquid outlet channel, annular chamber is formed between water seal cup and the inner wall of shell, the bottom center of the lid is fixed with vertical slide bar, the slide bar is equipped with sliding sleeve, the isolation cover of opening direction is fixed on the outside of the sliding sleeve, the open end of the isolation cover is protruded into annular chamber, the inner wall of the isolation cover, it is located at sustained height on outer wall and is uniformly fixed with several floating balls.The present invention, which has, to be able to maintain long-term seal, effectively prevent the beneficial effect that foul smell escapes in sewer.

Description

A kind of long-acting odor-proof drain structure
Technical field
The present invention relates to bath articles technical field more particularly to a kind of long-acting odor-proof drain structures.
Background technique
Floor drain, be connect sewerage system and flooring important interface, as in house drainage system it is important Component, its performance quality directly affect the quality of room air, extremely important to the peculiar smell control of bathroom.Floor drain should have Standby two kinds of basic functions: first, it is ensured that draining is smooth, can quickly exclude excess surface water;Second, good airproof performance can be effective Prevent the foul smell in sewer from entering the room.Current floor drain is usually all to use sealing structure for water, however if when floor drain is longer No water flowing is waited, the water at water seal can be evaporated, and be entered the room so as to cause the foul smell in sewer.
Summary of the invention
That there are deodorization performances in order to solve the problems, such as floor drain in the prior art is poor by the present invention, can not long-acting deodorization, provide A kind of long-acting odor-proof drain structure, when the water in water seal cup is evaporated can mechanical sealing, to reach long-acting deodorization Effect.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of long-acting odor-proof drain structure, including floor drain shell, lid, the lid is equipped with inlet opening, described The lower end of floor drain shell is equipped with bracing ring, is fixed with cricoid water seal cup, the center of the water seal cup on the upside of the bracing ring Equipped with liquid outlet channel, annular chamber is formed between water seal cup and the inner wall of shell, it is vertical that the bottom center of the lid is fixed with Slide bar, the slide bar are equipped with sliding sleeve, the isolation cover of opening direction are fixed on the outside of the sliding sleeve, and the isolation cover is opened Mouthful end is protruded into annular chamber, is located at sustained height on the inner wall of the isolation cover, outer wall and is uniformly fixed with several floating balls.
The water of the earth's surfaces such as bathroom enters in annular chamber from the inlet opening on lid, as the water level in annular chamber increases, Under the buoyancy of floating ball, overall isolation cover is moved up along sliding sleeve, after the water in annular chamber has been expired, inside and outside isolation cover A linker is formed, water is gone successively in the annular chamber on the outside of isolation cover, and the water at the top of the annular chamber on the inside of isolation cover overflows Sewer is discharged into from liquid outlet channel afterwards, to achieve the effect that lasting draining;When there is no water on ground, in water seal cup Water energy keeps water-sealing stinking-proof, and when entering for a long time without water, the water in water seal cup can constantly evaporate, until evaporating completely Fall, floating ball loss of buoyance acts at this time, and entire isolation cover moves down under gravity, the open end of isolation cover and annular The bottom of chamber contacts sealing, so that sewer is isolated with indoor space, plays the role of long-acting deodorization.
Preferably, the bottom of the annular chamber is equipped with annular reservoir at inner ring, the outer wall of the isolation cover with Clearance fit between the outer wall of annular reservoir;The interior bottom of the isolation cover is fixed with downward opening seal closure, the water The lower conical surface is equipped in sealing cup at the upper end inner wall of liquid outlet channel, is equipped at the lower end outer wall of the seal closure and matches with the lower conical surface The upper conical surface closed, when the upper conical surface and the sealing of lower taper-face contact, the lower end of the isolation cover is protruded into annular reservoir.When long-term When ground does not have water to enter in floor drain, the water in water seal cup can be constantly evaporated, and with the evaporation of dampening, isolation cover is subject to floating Power effect is gradually reduced and declines, until the upper conical surface of seal closure lower end and the lower taper-face contact of water seal cup upper end seal, at this time The lower end of isolation cover is protruded into annular reservoir, and the outer wall clearance fit of the outer wall of isolation cover and annular reservoir, at this time ring Water in shape reservoir is sealed in interior formation water seal in the space of a relative closure, and the water in annular reservoir is very long It is all difficult to be evaporated in time, the space in sewer and indoor space are by seal closure once sealing, and by annular liquid storage Water secondary seal in slot, significant sealing affection improve.
Preferably, the surface of the upper conical surface is equipped with conical seal ring.Conical seal ring increase the upper conical surface, the lower conical surface it Between leakproofness.
Preferably, being equipped with several circumferentially distributed connecting holes, the floating ball at the sustained height of the isolation cover Including floating ball ontology, it is fixed on the nipple of floating ball outer body, is connected with screw rod at nipple, the outer end of screw rod passes through Connecting hole is connect with the nipple on another floating ball, is equipped with sealing ring between nipple and the side wall of isolation cover.
Preferably, being equipped with linear bearing between the sliding sleeve and slide bar, the outside of the sliding sleeve is equipped with external screw thread, described The center of isolation cover is equipped with connector sleeve, is threadedly coupled between the connector sleeve and sliding sleeve, and the side of the connector sleeve is equipped with locking Bolt.
Preferably, the outer wall of the isolation cover, equipped with gear hair sieve, the gear hair sieve includes circular base and annular base The fixed several gear needles in seat outer ring, the gear needle are radially distributed from center to periphery, the gear needle from inner end outward It tilts upward.When floor drain is used for bathroom, bathe that there are many indoor hair, what a large amount of hairs accumulated over a long period enter in sewer holds very much Easily blocking sewer, is difficult to clean up after blocking, and in this structure, hair will receive the blocking of gear needle and wind, put after entering floor drain Set on gear needle, and keep off needle be it is inclined, hair moves along gear needle under the souring of water flow and is accumulated in isolation cover Outer wall at, in this way gear needle on hair be just not easy to be washed away by water flow;Periodic cleaning hair, it is only necessary to take out lid, slide bar And the isolation cover on slide bar takes out together also with lid, then can clear up the hair on gear needle.
Preferably, being equipped with filter cup in the liquid outlet channel, the bottom center of the filter cup, which is fixed with, to raise upward Conical screen, pull rod is equipped at the upper end inner wall of the filter cup, the lower end of the slide bar is fixed by connecting column and pull rod Connection.Filter cup is used for the positioning of conical screen, and conical screen can cross the impurity in drainage, prevents large granular impurity from entering and is lauched Road results in blockage;Since hair is easy to blocking conical screen, first hair is separated by gear needle in this structure, to reduce hair Hair causes green to conical screen, to extend the cleaning cycle of conical screen.
Preferably, position of the bottom of the filter cup between conical screen and filter cup inner wall is equipped with annular storage Slag chute.Entered in annular storage slag chute under the action of water flow along inclined-plane by the impurity that conical screen filters, to slow down taper The blocking of strainer, extend conical screen uses the time, reduces the cleaning frequency of conical screen.
Therefore, it is able to maintain long-acting sealing the invention has the following beneficial effects: (1), effectively prevent foul smell in sewer Evolution;(2) water seal is combined with mechanical sealing, further increases sealing stability;(3) hair is made with good collection With preventing hair from largely entering in sewer and resulting in blockage;(4) there is good collecting action to impurity, impurity can be prevented It results in blockage into sewer.
Detailed description of the invention
Fig. 1 is the hull-borne schematic diagram of embodiment 1.
Fig. 2 is the status diagram of moisture evaporating completely in embodiment 1.
Fig. 3 is partial enlargement diagram at the A of Fig. 1.
Fig. 4 is the hull-borne schematic diagram of embodiment 2.
Fig. 5 is the status diagram of water seal in embodiment 2, mechanical sealing.
Fig. 6 is partial enlargement diagram at B in embodiment 2.
Fig. 7 is the connection schematic diagram of floating ball and isolation cover.
Fig. 8 is the top view of embodiment 1, embodiment 2.
Fig. 9 is the connection top view for keeping off hair sieve and isolation cover.
In figure: floor drain shell 1, lid 2, inlet opening 3, bracing ring 4, water seal cup 5, liquid outlet channel 6, annular chamber 7, slide bar 8, Sliding sleeve 9, isolation cover 10, connecting hole 100, linear bearing 11, connector sleeve 12, locking bolt 13, floating ball 14, floating ball ontology 140, spiral shell Line connector 141, screw rod 142, sealing ring 143, gear hair sieve 15, circular base 150, gear needle 151, filter cup 16, conical screen 17, Pull rod 18, connecting column 19, annular storage slag chute 20, seal closure 21, the lower conical surface 50, annular reservoir 70, the upper conical surface 210, taper are close Seal 211.
Specific embodiment
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
Embodiment 1: a kind of long-acting odor-proof drain structure shown in as shown in Figure 1, Figure 2, Fig. 3 and Fig. 8, including floor drain shell 1, lid Body 2, lid are equipped with several inlet openings 3, and the lower end of floor drain shell is equipped with bracing ring 4, is fixed on the upside of bracing ring cricoid The center of water seal cup 5, water seal cup is equipped with liquid outlet channel 6, and annular chamber 7, the bottom of lid are formed between water seal cup and the inner wall of shell Face center is fixed with vertical slide bar 8, and slide bar is equipped with sliding sleeve 9, the isolation cover 10 of opening direction is fixed on the outside of sliding sleeve, every Open end from cover is protruded into annular chamber, and linear bearing 11 is equipped between sliding sleeve and slide bar, and the outside of sliding sleeve is equipped with external screw thread, every Center from cover is equipped with connector sleeve 12, is threadedly coupled between connector sleeve and sliding sleeve, and the side of connector sleeve is equipped with locking bolt 13;Every Several floating balls 14 are uniformly fixed with from being located at sustained height on the inner wall of cover, outer wall.
As shown in fig. 7, being equipped with several circumferentially distributed connecting holes 100 at the sustained height of isolation cover 10, floating ball 14 is wrapped The nipple 141 for including floating ball ontology 140, being fixed on floating ball outer body is connected with screw rod 142 at nipple, screw rod Outer end passes through connecting hole and connect with the nipple on another floating ball, is equipped between nipple and the side wall of isolation cover close Seal 143.
As shown in figure 9, the outer wall of isolation cover 10, which is equipped with, keeps off hair sieve 15, gear hair sieve 15 includes circular base 150 and annular base The fixed several gear needles 151 in seat outer ring, gear needle are radially distributed from center to periphery, and gear needle is tilted towards outward from inner end On;Filter cup 16 is equipped in liquid outlet channel 6, the bottom center of filter cup is fixed with the conical screen 17 to raise upward, filter cup Upper end inner wall at be equipped with pull rod 18, the lower end of slide bar is fixedly connected by connecting column 19 with pull rod;The bottom position of filter cup 16 Position between conical screen and filter cup inner wall is equipped with annular storage slag chute 20.
The principle of embodiment 1 is as follows: the water of the earth's surfaces such as bathroom enters in annular chamber from the inlet opening on lid, with annular Intracavitary water level increases, and under the buoyancy of floating ball, overall isolation cover is moved up along sliding sleeve, when the water in annular chamber is full After, isolation cover is inside and outside to form linker, and water is gone successively in the annular chamber on the outside of isolation cover, the ring on the inside of isolation cover The water of shape top of chamber is discharged into sewer after overflowing from liquid outlet channel, to achieve the effect that lasting draining, state such as Fig. 1 at this time Shown, for floor drain when draining, gear hair sieve can filter hair, conical screen energy impurity screening, to effectively avoid being lauched Road blocking;When not having water on ground, the water energy in water seal cup keeps water-sealing stinking-proof, when entering for a long time without water, Water in water seal cup can constantly evaporate, until evaporating completely is fallen, floating ball loss of buoyance is acted at this time, and entire isolation cover is in gravity Under the action of move down, the open end of isolation cover contacts sealing with the bottom of annular chamber, thus by sewer and indoor sky Between be isolated, play the role of long-acting deodorization, state is as shown in Figure 2 at this time.
Embodiment 2: a kind of long-acting odor-proof drain structure as shown in Figure 4 and Figure 5, including floor drain shell 1, lid 2, lid Body is equipped with several inlet openings 3, and the lower end of floor drain shell is equipped with bracing ring 4, is fixed with cricoid water seal cup on the upside of bracing ring 5, the center of water seal cup is equipped with liquid outlet channel 6, and annular chamber 7, the bottom center of lid are formed between water seal cup and the inner wall of shell It is fixed with vertical slide bar 8, slide bar is equipped with sliding sleeve 9, the isolation cover 10 of opening direction is fixed on the outside of sliding sleeve, isolation cover Open end is protruded into annular chamber, as shown in figure 3, being equipped with linear bearing 11 between sliding sleeve and slide bar, the outside of sliding sleeve is equipped with outer spiral shell The center of line, isolation cover is equipped with connector sleeve 12, is threadedly coupled between connector sleeve and sliding sleeve, and the side of connector sleeve is equipped with locking bolt 13;It is located at sustained height on the inner wall of isolation cover, outer wall and is uniformly fixed with several floating balls 14.
The bottom of annular chamber 7 is equipped with annular reservoir 70, the outer wall of isolation cover 10 and annular reservoir at inner ring Clearance fit between outer wall, the interior bottom of isolation cover 10 are fixed with downward opening seal closure 21, as shown in fig. 6, on water seal cup 5 It is equipped with the lower conical surface 50 at the upper end inner wall of liquid outlet channel, is equipped at the lower end outer wall of seal closure 21 upper with lower cone match The surface of the conical surface 210, the upper conical surface is equipped with conical seal ring 211, when the upper conical surface and the sealing of lower taper-face contact, under isolation cover 10 End is protruded into annular reservoir.
As shown in fig. 7, being equipped with several circumferentially distributed connecting holes 15 at the sustained height of isolation cover 10, floating ball 14 includes Floating ball ontology 140, the nipple 141 for being fixed on floating ball outer body, are connected with screw rod 142 at nipple, screw rod it is outer End is connect across connecting hole with the nipple on another floating ball, and sealing is equipped between nipple and the side wall of isolation cover Circle 143.
As shown in figure 9, the outer wall of isolation cover 10, which is equipped with, keeps off hair sieve 15, gear hair sieve 15 includes circular base 150 and annular base The fixed several gear needles 151 in seat outer ring, gear needle are radially distributed from center to periphery, and gear needle is tilted towards outward from inner end On;Filter cup 16 is equipped in liquid outlet channel 6, the bottom center of filter cup is fixed with the conical screen 17 to raise upward, filter cup Upper end inner wall at be equipped with pull rod 18, the lower end of slide bar is fixedly connected by connecting column 19 with pull rod;The bottom position of filter cup 16 Position between conical screen and filter cup inner wall is equipped with annular storage slag chute 20.
The principle of embodiment 2 is as follows: the water of the earth's surfaces such as bathroom enters in annular chamber from the inlet opening on lid, with annular Intracavitary water level increases, and under the buoyancy of floating ball, overall isolation cover is moved up along sliding sleeve, when the water in annular chamber is full After, isolation cover is inside and outside to form linker, and water is gone successively in the annular chamber on the outside of isolation cover, the ring on the inside of isolation cover The water of shape top of chamber is discharged into sewer after overflowing from liquid outlet channel, to achieve the effect that lasting draining, state such as Fig. 4 at this time It is shown;When long-term ground does not have water to enter in floor drain, the water in water seal cup can be constantly evaporated, with the evaporation of dampening, every The buoyancy being subject to from cover is gradually reduced and declines, until the upper conical surface of seal closure lower end and the lower conical surface of water seal cup upper end connect Touching sealing, at this time the lower end of isolation cover protrude into annular reservoir (lower end of isolation cover with annular reservoir bottom do not connect Touching), and the outer wall clearance fit of the outer wall of isolation cover and annular reservoir, the water in annular reservoir is sealed in one at this time Interior formation water seal in the space of relative closure, water can only be in communication with the outside by the gap at clearance fit at this, herein gap Corresponding evaporation surface can be ignored, and the water in annular reservoir is all difficult to be evaporated in long time, under By seal closure once sealing, and by the water secondary seal in annular reservoir, sealing is imitated in space and indoor space in water channel Fruit significantly improves, and deodorization performance is splendid.
The above is only specific embodiments of the present invention, but technical characteristic of the invention is not limited thereto.It is any with this hair Based on bright, to solve essentially identical technical problem, essentially identical technical effect is realized, made simple change, etc. With replacement or modification etc., all it is covered by among protection scope of the present invention.

Claims (8)

1. a kind of long-acting odor-proof drain structure, including floor drain shell, lid, the lid is equipped with inlet opening, feature It is that the lower end of the floor drain shell is equipped with bracing ring, is fixed with cricoid water seal cup, the water seal cup on the upside of the bracing ring Center be equipped with liquid outlet channel, annular chamber is formed between water seal cup and the inner wall of shell, the bottom center of the lid is fixed with Vertical slide bar, the slide bar are equipped with sliding sleeve, the isolation cover of opening direction, the isolation are fixed on the outside of the sliding sleeve The open end of cover is protruded into annular chamber, be located at sustained height on the inner wall of the isolation cover, outer wall be uniformly fixed with it is several floating Ball.
2. a kind of long-acting odor-proof drain structure according to claim 1, characterized in that the bottom of the annular chamber is close Annular reservoir, clearance fit between the outer wall of the isolation cover and the outer wall of annular reservoir are equipped at inner ring;The isolation The interior bottom of cover is fixed with downward opening seal closure, is located at the upper end inner wall of liquid outlet channel on the water seal cup and is equipped with lower cone Face is equipped with the upper conical surface with lower cone match at the lower end outer wall of the seal closure, when the upper conical surface and lower taper-face contact seal, The lower end of the isolation cover is protruded into annular reservoir.
3. a kind of long-acting odor-proof drain structure according to claim 2, characterized in that the surface of the upper conical surface is equipped with Conical seal ring.
4. a kind of long-acting odor-proof drain structure according to claim 1 or 2 or 3, characterized in that the isolation cover it is same Several circumferentially distributed connecting holes are equipped at one height, the floating ball includes floating ball ontology, is fixed on floating ball outer body Nipple, screw rod is connected at nipple, the outer end of screw rod passes through the nipple on connecting hole and another floating ball Connection, is equipped with sealing ring between nipple and the side wall of isolation cover.
5. a kind of long-acting odor-proof drain structure according to claim 1, characterized in that set between the sliding sleeve and slide bar There is linear bearing, the outside of the sliding sleeve is equipped with external screw thread, and the center of the isolation cover is equipped with connector sleeve, the connector sleeve and cunning It is threadedly coupled between set, the side of the connector sleeve is equipped with locking bolt.
6. a kind of long-acting odor-proof drain structure according to claim 1, characterized in that the outer wall of the isolation cover is equipped with Hair sieve is kept off, the gear hair sieve includes circular base, several gear needles fixed with circular base outer ring, and the gear needle is by center It radially distributes to periphery, the gear needle tilts upward outward from inner end.
7. a kind of long-acting odor-proof drain structure according to claim 1 or 6, characterized in that set in the liquid outlet channel There is a filter cup, the bottom center of the filter cup is fixed with the conical screen to raise upward, at the upper end inner wall of the filter cup Equipped with pull rod, the lower end of the slide bar is fixedly connected by connecting column with pull rod.
8. a kind of long-acting odor-proof drain structure according to claim 7, characterized in that the bottom of the filter cup is located at Position between conical screen and filter cup inner wall is equipped with annular storage slag chute.
CN201811351830.3A 2018-11-14 2018-11-14 Long-acting deodorization type floor drain structure Active CN109518791B (en)

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CN109518791B CN109518791B (en) 2020-06-30

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110042910A (en) * 2019-06-06 2019-07-23 台州信各灵卫浴科技有限公司 A kind of double-layer deodorant floor drain
CN110258758A (en) * 2019-07-01 2019-09-20 浙江亚厦装饰股份有限公司 Seal floor drain and its installation method
CN110528669A (en) * 2019-09-11 2019-12-03 浙江富瑞浦卫浴科技有限公司 A kind of general odour-proof floor drain of dry and wet
CN111677098A (en) * 2020-05-17 2020-09-18 魏磊 Drainage pipeline cover plate
CN111779116A (en) * 2020-07-28 2020-10-16 东阳市中傲建筑工程有限公司 Drainage structure of building body
CN111962642A (en) * 2020-08-24 2020-11-20 黄于漠 Deodorant environment-friendly floor drain of quick assembly disassembly formula
CN111962643A (en) * 2020-08-24 2020-11-20 黄于漠 Deodorant floor drain for fabricated building and assembling method thereof
CN112196065A (en) * 2020-09-29 2021-01-08 冷军 Floor drain device based on siphon position adjustment changes
CN112252445A (en) * 2020-10-14 2021-01-22 宋刚强 Deodorant floor drain with self-cleaning ability
CN113693442A (en) * 2021-08-25 2021-11-26 杨环 Water-accumulation-preventing intelligent seat of water dispenser

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CN206800592U (en) * 2017-06-19 2017-12-26 湖州职业技术学院 A kind of rain collection well
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Publication number Priority date Publication date Assignee Title
JP2000213033A (en) * 1999-01-22 2000-08-02 Hironobu Kondo Floor drain trap
CN2725386Y (en) * 2004-07-06 2005-09-14 张全 Multifunction floor drain
CN201065559Y (en) * 2007-06-06 2008-05-28 李彬 Floor drain
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110042910A (en) * 2019-06-06 2019-07-23 台州信各灵卫浴科技有限公司 A kind of double-layer deodorant floor drain
CN110258758A (en) * 2019-07-01 2019-09-20 浙江亚厦装饰股份有限公司 Seal floor drain and its installation method
CN110528669A (en) * 2019-09-11 2019-12-03 浙江富瑞浦卫浴科技有限公司 A kind of general odour-proof floor drain of dry and wet
CN111677098A (en) * 2020-05-17 2020-09-18 魏磊 Drainage pipeline cover plate
CN111779116A (en) * 2020-07-28 2020-10-16 东阳市中傲建筑工程有限公司 Drainage structure of building body
CN111779116B (en) * 2020-07-28 2021-06-22 东阳市中傲建筑工程有限公司 Drainage structure of building body
CN111962642A (en) * 2020-08-24 2020-11-20 黄于漠 Deodorant environment-friendly floor drain of quick assembly disassembly formula
CN111962643A (en) * 2020-08-24 2020-11-20 黄于漠 Deodorant floor drain for fabricated building and assembling method thereof
CN111962642B (en) * 2020-08-24 2021-07-23 台州联豪自动化设备有限公司 Deodorant environment-friendly floor drain of quick assembly disassembly formula
CN112196065A (en) * 2020-09-29 2021-01-08 冷军 Floor drain device based on siphon position adjustment changes
CN112252445A (en) * 2020-10-14 2021-01-22 宋刚强 Deodorant floor drain with self-cleaning ability
CN113693442A (en) * 2021-08-25 2021-11-26 杨环 Water-accumulation-preventing intelligent seat of water dispenser

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