CN101831942B - Drain trap - Google Patents
Drain trap Download PDFInfo
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- CN101831942B CN101831942B CN201010166179XA CN201010166179A CN101831942B CN 101831942 B CN101831942 B CN 101831942B CN 201010166179X A CN201010166179X A CN 201010166179XA CN 201010166179 A CN201010166179 A CN 201010166179A CN 101831942 B CN101831942 B CN 101831942B
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- water shutoff
- draining
- tube
- trap
- bowl
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 290
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 90
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- 238000005406 washing Methods 0.000 abstract description 77
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- 238000012279 drainage procedure Methods 0.000 description 4
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- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 3
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- Sink And Installation For Waste Water (AREA)
Abstract
The invention discloses a drain trap, which comprises a trap body, a water seal bowl and a water seal cylinder, wherein the bottom surface of the trap body 6 is bulged to form a vertex part, and from the vertex part used as a starting point to two sides until the lowest end of a discharge port, a continuously descending inclined plane is arranged on the trap body. Besides, the drain trap can also be provided with an anti-foam pipe of which a guidance part is provided with a through hole or a slot. Even when the drain trap is in a drainage environment that a washing machine or a bath and the like comprise a large quantity of foams, the drain trap not only ensures that the foams cannot flow backward towards one side of a machine, but also ensures that the drainage is performed smoothly and the drainage flow is promoted; besides, a broken seal phenomenon appearing in the drain trap can be prevented.
Description
[technical field]
The present invention relates to a kind ofly be used to prevent from the foul smell of sewer and insect drain trap to an indoor side adverse current.
[background technology]
About our common drain trap, generally how as shown in Figure 12.Following one side is contrasting pattern shown in Figure 12, Yi Bian come common drain trap is described.Existing drain trap shown in Figure 12 is mounted on the following described use in washing machine waterproof base.The top of use in washing machine waterproof base is washing machine body just, and the waterproof base end face has opening.Drain trap is made of trap body, flange, water shutoff bowl, water shutoff tube, anti-foam pipe, joint, the sieve plate parts of the following stated.The trap body is container-like, includes: the outlet opening that outfall, the side that the top draining flows into allows draining discharge.In addition,, be processed with the female screw thread that is screwed with the aftermentioned flange, on outlet opening, connect body, and finally be connected with sewer pipe at the outfall place.In addition, aftermentioned water shutoff bowl is disposed at the trap body interior, and the peripheral space of this water shutoff bowl has then constituted the flowing water road that allows draining pass through.Flange is to have the cross section that is external convex flange to be the parts of L word shape, and periphery then is the aforementioned male screw thread that is screwed with the trap body.In addition, the effect of this flange is the opening part that the trap body is installed on aforementioned use in washing machine waterproof base, be directed to the opening of use in washing machine waterproof base, flange and trap body are clipped together, the male screw thread of flange and the female screw thread of trap body screw togather and screw, and can finish fitting operation.The water shutoff bowl is to be disposed at that trap is intrinsic to be container-like bowl-type parts, and inside constitutes the water shutoff space that a part of draining storage collection can be got up.As on the top of water shutoff bowl, then have and the water that overflows of water storage in the water shutoff bowl can be expelled to the outer drain water piping of water shutoff bowl.In addition, in existing example, the water shutoff bowl by with the chimeric installation of aforementioned flange, can free installation and removal easily.The water shutoff tube is parts cylindraceous, is disposed in the aforementioned water shutoff bowl, and itself and water shutoff bowl have constituted the water shutoff function jointly.Water shutoff is in order not allow the foul smell and the insect adverse current of sewer be provided with especially to an indoor side.In addition, water shutoff tube also mosaic is installed on the aforementioned flange, so that installation and removal freely.Anti-foam pipe is used for the draining (this example is the draining from washing machine) from the draught engine device being directed to the lower end of water shutoff tube and discharging.It constitutes cylindric tube portion and guidance part, the top of cylindric tube portion wherein is provided with the inflow entrance that the draining that allows from the draining machine flows into, and then is provided with on the guidance part at the flow export of the distolateral side extension of tube subordinate so that the draining in the tube portion is discharged outside anti-foam pipe.In addition, the formation of guidance part can be to be close to the water shutoff tube, also can be that self-styled water drum extends to foreign side.Joint is connected between the inflow entrance of the scupper hose of washing machine and anti-foam pipe, is the body of a union elbow shape.The chimeric installation of sieve plate parts and flange is configured in the outfall place of trap body.
About aforesaid drain trap, its drain flow situation is described below: the draining of discharging from the washing machine place is expelled to outside the anti-foam pipe via flow export by tube portion and guidance part by the scupper hose of washing machine, the inflow entrance that joint flows into anti-foam pipe again.Like this by the drainage pattern in the anti-foam pipe, because guidance part is mutually close with the water shutoff tube, or be structure that self-styled water drum outward direction extends, therefore, the numerous foams that comprised in the washing machine drainage will be directly from the external forced discharge of the guidance part of anti-foam pipe to the water shutoff tube, thereby guaranteed can not to occur the self-styled water drum of foam in the draining to the phenomenon of outfall adverse current and so on.Discharge to the outside via the self-styled water drum of the draining of anti-foam pipe, discharge to the intrinsic flowing water of trap road from the drain water piping of water shutoff bowl, as for then finally discharging to sewer pipe via outlet opening via the draining on flowing water road.In addition, if when draining takes place on the use in washing machine waterproof base, then can flow in the trap body via the outfall on the trap body that is connected in use in washing machine waterproof base openings place.Under this kind occasion, owing to dispose the sieve plate parts on the outfall of trap body, therefore, rubbish in the draining on the use in washing machine waterproof base and hair etc. will be got off by sieve plate parts filtration residue, thereby have guaranteed that bigger rubbish etc. can not sneak in the draining that flows in the trap body.In addition, flow into the intrinsic draining of trap via the water shutoff tube after storing in the water shutoff bowl from outfall, by the drain water piping of the water shutoff bowl intrinsic flowing water of the trap road of flowing through, directly finally be expelled to sewer pipe by body with more then from the outlet opening of trap body.
As existing drain trap, next, please see Figure pattern shown in 13 again for another example.To contrast pattern shown in Figure 13 on one side equally below, Yi Bian come the drain trap of this kind structure to describe.Shown in Figure 13 drain trap be set in the bathroom of the following stated.The bathroom is made of following a few part: bath base, the adjacent washing field base that forms wash place that is provided with this bath base of bath, arrangement bath.In addition, a bath base and a washing base are provided with opening, in the inboard of this opening, then connect and dispose drain trap.This drain trap is made of trap body, flange, water shutoff bowl, water shutoff tube, sieve plate parts, the union elbow parts of the following stated.The trap body is to be had container-likely, includes: the outlet opening that outfall, the side that the top draining flows into allows draining discharge.In addition,, be processed with the female screw thread that is screwed with the aftermentioned flange, on outlet opening, connect body, and finally be connected with sewer pipe at the outfall place.In addition, the place, side at the trap body arm that is connected with aftermentioned union elbow parts is then arranged, and when aftermentioned water shutoff bowl was disposed at inside, the peripheral space of this water shutoff bowl had constituted the flowing water road that allows draining pass through.Flange is to have the cross section that is external convex flange to be the parts of L word shape, and periphery then is the aforementioned male screw thread that is screwed with the trap body.In addition, the effect of this flange is the opening part that the trap body is installed on aforementioned use in washing machine waterproof base, be directed to the opening of use in washing machine waterproof base, flange and trap body are clipped together, the male screw thread of flange and the female screw thread of trap body screw togather and screw, and can finish fitting operation.The water shutoff bowl is to be parts cylindraceous, and it is erect from the bottom surface in the trap body, is made into integration with the trap body.Its inside constitutes a water shutoff space that draining can be given part storage collection.As on the top of water shutoff bowl, the water that overflows that then is provided with water storage in the water shutoff bowl is expelled to the outer drain water piping of water shutoff bowl.The water shutoff tube is parts cylindraceous, is disposed in the aforementioned water shutoff bowl, and itself and water shutoff bowl have constituted the water shutoff function jointly.Water shutoff is in order not allow the foul smell and the insect adverse current of sewer be provided with especially to an indoor side.In addition, water shutoff tube also mosaic is installed on the aforementioned flange, so that installation and removal freely.The chimeric installation of sieve plate parts and flange is configured in the outfall place of trap body.The union elbow parts see from the side and are the union elbow shape, draining its inside of flowing through.The one end is installed on the opening part of bath base, and the other end then is connected with the arm of trap body.
Drain flow situation about drain trap described in the paragraph 0004 is described below: the draining that produces on washing base is from the flow through outfall of inboard trap body of the opening part of a washing base, flow into the trap body interior then, flow into the water shutoff bowl through the water shutoff tube again.Draining in the water shutoff bowl is flow through the upper end of water shutoff bowl by water shutoff tube lower end, and by drain water piping, via the intrinsic flowing water of trap road, the outlet opening via the trap body is expelled to the outside again.In addition, the draining of discharging from outlet opening is expelled to sewer the most at last.In the draining of bath is installed on inflow the union elbow parts of opening part of bath base, directly flow in the trap body then via the arm of trap body.Flowing into the intrinsic bath draining of trap from arm will discharge to sewer via the outlet opening of trap body by the intrinsic flowing water of trap road.The draining of bath base position then will flow into from the opening part of bath base in the union elbow parts, directly from the intrinsic flowing water of the arm inflow trap road of trap body, thereafter, will be expelled to sewer by the outlet opening of trap body then.Because what adopt is above-mentioned such drainage path,, be after intrinsic water shutoff, just to be expelled to sewer pipe all via trap no matter be draining, the draining of bath or the draining of bath base of a washing base.Therefore, can not occur from the outfall of washing base or from the opening part adverse current of bath base phenomenon from the stench of sewer or insect and so on.In addition, even in the draining of a washing base, have under the occasion of hair or rubbish etc., owing to be provided with the sieve plate parts, these sieve plate parts can get up collections such as hair or rubbish in the outfall of trap body, therefore can not cause them to flow in the trap body or following water side.
Patent documentation 1: Japan, real public clear 62-27572 communique; Patent documentation 2: Japan, real fair 3-450 communique; Patent documentation 3: Japan, open flat 5-3378 communique in fact; Patent documentation 4: Japan, spy open flat 3-260230 communique.
Existing drain trap, ubiquity the problem of the following stated: if common use in washing machine drain trap, in order in draining, not allow foam dispose anti-foam pipe to the indoor adverse current, but, the flow export aperture area of this anti-foam pipe is comparatively narrow, though it can be restrained the foam in the draining effectively, just, also caused the very unfavorable result of drain discharge simultaneously because the flow export aperture area is narrow.In addition, if common bath drain trap, under occasions such as the displacement that flows into to the trap body is more, the intrinsic draining of trap is because of mobile too late, sometimes to the draining oral-lateral adverse current of trap body, or on a washing base draining adverse current.In addition, except meeting to washing base side adverse current, sometimes also can be by the arm of trap body to the opening part adverse current of union elbow parts, under this kind occasion, more can flow to bath base superinverse, or draining adverse current phenomenon takes place to bath top from the opening part of union elbow parts.Particularly when having taken place on washing base and during the draining adverse current phenomenon in the bath and since for the user this phenomenon be intuitively, visible, so more make us on the sense organ feeling extremely unhygienic.Because usually all can be with the in addition waterproof connection of objects such as backing plate on the bath base; all can't Visual Confirmation on from washing base one side to the bath base; and when draining when bath base superinverse flows; even if want cleaning is cleaned on bath base top; because the overslaugh of backing plate; regular meeting causes being difficult to cleaning, and during worst, also can therefore cause problems such as stench.
[summary of the invention]
Drain trap of the present invention, it invents in order to solve following problem: even 1. comprising under the draining environment of a large amount of foams at washing machine or bath etc., except guaranteeing can not to take place foam counter-flow phenomenon to machine one side, more can allow draining carry out smoothly, and promote drain discharge.2. with respect to existing drain trap, it can be to machine one side generation draining adverse current, and drain discharge promotes relatively.3. prevent that the foam that washing agent etc. causes from overflowing from drain trap, can prevent to occur in the drain trap broken envelope phenomenon simultaneously.
For addressing the above problem, technical scheme of the present invention is as follows: a kind of drain trap includes: container-like trap body 6, and the outlet opening 2 of usefulness is discharged in the draining that it includes outfall 1 that superposed draining flows into usefulness, be positioned at the side; Be disposed in the trap body 6, be provided with container-like water shutoff bowl 9 of being of draining drain water piping 7 in the side; Be tubular, be disposed in the water shutoff bowl 9, with the water shutoff bowl 9 common water shutoff tubes 10 that constitute the water shutoff function; It is characterized in that: the floor lift of described trap body 6 forms apex 4, with this apex 4 as starting point to both sides until outlet opening 2 bottom till, be provided with descending inclined plane 5 continuously.
Drain trap described in the paragraph 0009 is characterized in that: when overlooking described outfall 1, should be non-line symmetry as the inclined plane 5 of starting point with respect to the center line of outlet opening 2 with apex 4.
Arbitrary described drain trap in the paragraph 0009 or 0010 is characterized in that: described apex 4 is positioned at: when overlooking described outfall 1, apex 4 points to the straight line at outfall 1 center and the center line of outlet opening 2 is 260 ° of angles approximately.
Paragraph 0009 arbitrary described drain trap to the paragraph 0011 is characterized in that: the bottom surface of the bottom surface of described outlet opening 2 and trap body 6 maintains an equal level substantially.
Drain trap of the present invention includes: container-like trap body 6 is arranged, and it includes superposed draining and flows into outfall 1, the outlet opening 2 that allows draining discharge from the side; Be disposed in the trap body 6, be provided with the container-like water shutoff bowl 9 of draining drain water piping 7 in the side; Be tubular, be disposed in the water shutoff bowl 9, with the water shutoff bowl 9 common water shutoff tubes 10 that constitute the water shutoff function; Be disposed at the anti-foam pipe 16 in the water shutoff tube 10, its effect is to be directed in the water shutoff bowl 9 from the draining of the draught engine device lower end from water shutoff tube 10, include tubular tube portion 13 and guidance part 14, wherein the top of tubular tube portion 13 is to allow the inflow entrance 11 that flows into from the draining of draining machine, guidance part 14 then is provided with from tube portion 13 lower ends and extends to the side, with the flow export 12 that allows draining discharge to the outside; Be positioned at the gap of aforementioned water shutoff bowl 9 and aforementioned water shutoff tube 10, be communicated to the draining stream 28 of outlet opening 2; Be positioned at the gap of aforementioned water shutoff tube 10 and aforementioned anti-foam pipe 16, be used to gather the stream 29 that catchments of the draining that flows into from aforementioned water shutoff tube 10 top edges; It is characterized in that: in the described guidance part 14, be provided with the through hole 26 that is connected with the aforementioned stream 29 that catchments, or grooving 27.
Drain trap described in the paragraph 0013 is characterized in that: described guidance part 14 is provided with upper wall and sidewall at least, and through hole 26 or grooving 27 are set at the bottom of guidance part 14 sidewalls.
Arbitrary described drain trap in the paragraph 0013 or 0014 is characterized in that: under depression angle, the guidance part 14 of described anti-foam pipe 16 is made of the wall portion of a plurality of easy curve shapes.
Arbitrary described drain trap in the paragraph 0013 to 0015 is characterized in that: in the bottom surface of aforementioned water shutoff bowl 9, be provided with the protuberance 8 of subdued uplift upward.
Arbitrary described drain trap in the paragraph 0013 to 0016 is characterized in that: in tube portion 13 sides of aforementioned anti-foam pipe 16, be provided with the blade part 15 that is used for playing configuration location and fixed-site effect in water shutoff tube 10.
Arbitrary described drain trap in aforementioned is characterized in that: used aforementioned paragraphs 0013 to the anti-foam pipe described in the paragraph 0017 in the paragraph 0009 to 0012.
Paragraph 0018 described drain trap is characterized in that:: the drain flow direction in the guidance part 14 of aforementioned anti-foam pipe 16 is consistent direction with the drain flow direction on the inclined plane 5 of trap body 6.
Drain trap of the present invention can have been given play to following effect: the present invention who is put down in writing in the paragraph 0009, it makes the bottom heave of trap body 6 form apex 4, with this apex 4 be the starting point both sides until outlet opening bottom till a continuous descending inclined plane 5 is set, forcibly the mobile formation of draining is controlled thus, therefore, strengthen the force and velocity of a current of draining, thereby improved the drain discharge of drain trap.The present invention who is put down in writing in the paragraph 0010, because when overlooking, be that the inclined plane 5 of starting point is not the line symmetry with respect to the center line of outlet opening 2 with apex 4, therefore, the draining current form spiral vortex type from apex 4 and flow, thereby have realized the rising of drain trap drain discharge.The present invention who is put down in writing in the paragraph 0011, owing to constitute the position of aforementioned apex 4 be: the center line of overlooking outlet opening 2, apex 4 is 260 ° of angles approximately towards the straight line and outlet opening 2 center lines of trap body 6 central points, therefore make the draining current form the most surging flow direction, thereby promoted the drain discharge of drain trap towards outlet opening.The present invention who is put down in writing in the paragraph 0012, because the bottom surface of the bottom surface of its outlet opening 2 and trap body 6 maintains an equal level substantially, draining mobile on inclined plane 5 to the smooth and easy draining of outlet opening 2, thereby promoted the drain discharge of drain trap.In addition, because the bottom surface of outlet opening installation site and the bottom surface of trap body maintain an equal level substantially, it is poor in height to form section unlike in the past, can solve the problem of rubbish obstruction etc. like this, simultaneously, the draining current can be because of the section difference not be hindered, thereby has received the effect that promotes the drain trap drain discharge yet.In addition, can also reduce the height of drain trap body, play certain low chassis effect.The present invention who is put down in writing in the paragraph 0013 makes that include the draining that causes foam by a large amount of washing agent etc. the scupper hose by washing machine flows into anti-foam pipe 16, and then flows into guidance parts 14 from anti-foam pipe 16.Guidance part 14 is except with draining stream 28 links to each other, also be provided with the through hole 26 or the grooving 27 that are connected with the stream 29 that catchments, thereby make the wherein part in the draining that flows into guidance part 14 be expelled to the stream 29 that catchments by through hole 26 or grooving 27, other parts then will be expelled to draining stream 28.Therefore, a part can be expelled to the stream 29 that catchments because the draining that the scupper hose by washing machine flows into only has wherein, thereby having prevented to comprise in a large number frothy draining concentrates in the stream 29 that catchments, cause final problem of from the sieve plate parts 24 of drain trap, overflowing, and this prevents spill-over effects, with do not use anti-foam pipe 16 and guidance part 14, just the scupper hose of washing machine is compared with the occasion that the stream 29 that catchments is connected, come much effectively.In addition, allow the draining of part flow in the stream 29 that catchments like this after, even taking place under the occasion of siphonage voluntarily, begin to supply with owing to have new draining, thereby guaranteed the draining of the water yield in accordance with regulations in the draining stream 28 for the stream 29 that catchments.And, prevent that the effect of broken envelope phenomenon from appearring in drain trap inside thereby can play because the draining meeting of the regulation water yield of gathering after siphonage is eliminated voluntarily, begins to be supplied with to draining stream 28 in the stream 29 that catchments.The present invention of record makes through hole 26 or grooving 27 be arranged at the bottom of the sidewall of guidance part 14 in the paragraph 0014.Because the foam that is comprised in a large number in the washing machine drainage contains air, so the position that in guidance part 14, can flow through and lean on.Thus, flow through and can not pass through by last foam in the guidance part 14 from through hole 26 or the grooving 27 that is arranged at guidance part 14 bottoms, but can directly be expelled to draining stream 28 from flow export 12, so, just can more effectively prevent this phenomenon that foam is concentrated and overflowed from sieve plate parts 24 at 29 li of the streams of catchmenting.The present invention of record in the paragraph 0015, because under depression angle, the guidance part 14 of anti-foam pipe 16 is made of the wall portion of a plurality of easy curve shapes, this makes the draining current form the stronger curve shape force and velocity of a current on the wall of the easy curve shape of guidance part 14, draining is swirl shape flows, thereby has promoted the drain discharge of drain trap.The present invention of record in the paragraph 0016, owing to be bottom surface at aforementioned water shutoff bowl 9, be provided with the protuberance 8 of subdued uplift upward, therefore the draining meeting that flows down from anti-foam pipe 16 collides at protuberance 8 places and is radial and scatters, thereby mobile formation control to draining, the guidance part 14 that the controlled draining of this fluidised form is taken advantage of a situation and entered and pass through anti-foam pipe 16 just can make draining form and have more the powerful force and velocity of a current of vortex form, thereby promote the drain discharge of drain trap.The present invention of record in the paragraph 0017, because side in the tube portion 13 of anti-foam pipe 16, constitute the blade part 15 that is used in water shutoff tube 10, playing configuration location and fixed-site effect, thereby make anti-foam pipe 16 realize the most suitable location and fixing at the water shutoff tube 10 that is positioned at trap body 6 internal drainage mouth places.The present invention of record in the paragraph 0018, by in the trap body 6 described in paragraph 0009 and even the paragraph 0012, use the anti-foam pipe 16 described in paragraph 0013 and even the paragraph 0016, this make to rely on anti-foam pipe 16 guidance part 14 easy curve and the draining current that form have further possessed the more powerful draining force and velocity of a current because of the inclined plane 5 of trap body 6, therefore also just further promoted the drain discharge of drain trap.The present invention of record in the paragraph 0019, because it makes the flow direction of the water arranged in the guidance part 14 of aforementioned anti-foam pipe 16, be consistent direction with the drain flow direction on the inclined plane 5 of trap body 6, also just making trap body 6 interior draining current be same direction flows, eliminate the problem of trap body 6 internal drainage direction disorders, thereby also just promoted the drain discharge of drain trap.
[description of drawings]
Fig. 1 is the sectional view of the embodiment of the invention 1 user mode; Fig. 2 is the sectional view of the embodiment of the invention 2; Fig. 3 is the part stereogram of the embodiment of the invention 3; Fig. 4 is the wherein stereogram of the anti-foam pipe of several structures of the present invention, and wherein: (a) being the stereogram of the anti-foam pipe of the embodiment of the invention 3, (b) is the stereogram of the anti-foam pipe of other embodiments of the invention, (c) is the stereogram of other embodiments of the invention; Fig. 5 is the A-A ' sectional view of Fig. 2; Fig. 6 is the structure chart of water shutoff bowl of the present invention, and wherein: (a) being the vertical view of the water shutoff bowl in the embodiment of the invention 2, (b) is the B-B ' sectional view among the Fig. 4 (a) of the water shutoff bowl in the embodiment of the invention 2; Fig. 7 is the anti-foam duct ligation composition of the embodiment of the invention 2, and wherein: (a) being vertical view, (b) is the C-C ' sectional view among Fig. 7 (c), (c) is upward view; Fig. 8 is the vertical view of the trap body in the embodiment of the invention 2; Fig. 9 is the side view of the trap body in the embodiment of the invention 2; Figure 10 is a D-D ' sectional view among Fig. 8; Figure 11 is the sectional view of the embodiment of the invention 2 user modes; Figure 12 is a sectional view routine usually in the prior art; Figure 13 is a sectional view routine usually in the prior art.[explanation of symbol]
[specific embodiment]
Drain trap about the embodiment that put down in writing in the paragraph 0023, its drain flow situation is described below: the opening in the draining of washing a base 22 generations from a washing base 22, via the outfall 1 of the trap body 6 of inboard and flow into the inside of trap body 6, flow into water shutoff bowl 9 again via water shutoff tube 10.Draining in the water shutoff bowl 9 is flow through the upper end of water shutoff bowl 9 through water shutoff tube 10 lower ends, and by drain water piping 7, via the inclined plane 5 on the flowing water road 3 in the trap body 6, the outlet opening 2 from trap body 6 is expelled to the outside at last again.In addition, the draining of discharging from outlet opening 2 is expelled to sewer the most at last.At this moment, draining is relying on inclined plane 5, and makes flow more smooth and easy, and the impetus is strength more, and simultaneously, because inclined plane 5 is sustained height with the bottom surface of outlet opening 2 bottom, the draining that is therefore added gesture more can be expelled to the outside from outlet opening 2 swimmingly.Draining from bath at first flows in the union elbow parts 23 of the opening part that is installed in bath base 21, and the direct then arm 25 via trap body 6 flows in the trap body 6.Will be from the bath draining that arm 25 flows in the trap body 6 by the flowing water road 3 in the trap body 6, the outlet opening 2 from trap body 6 is expelled to sewer then.At this moment, draining relies on inclined plane 5, and makes drain flow more smooth and easy, has more the impetus, and simultaneously, because inclined plane 5 is sustained height with the bottom surface of outlet opening 2 bottom, the draining that is therefore added gesture more can be expelled to the outside from outlet opening 2 swimmingly.In addition, because the bottom surface of trap body 6 has not had section poor on short transverse with outlet opening 2 parts, so the drain flow obstruction that differs from and so on of the section of being subjected to no longer, more can realize draining smoothly.In addition, because the disappearance of section difference, make and can correspondingly dwindle on the short transverse of drain trap body, thereby, also just can realize the purpose of low chassisization.Flow in the union elbow parts 23 from the draining of bath base 21 opening from bath base 21, the direct then arm 25 from trap body 6 flows into water shutoff bowls 9, enter the flowing water road 3 in the trap body 6 again, thereafter, the outlet opening 2 from trap body 6 is expelled to sewer again.Because what adopt is above-mentioned such drainage path,, be after via the water shutoff in the trap body 6, just to be expelled to sewer pipe all no matter be draining, the draining of bath or the draining of bath base 21 of a washing base 22.Therefore, can not occur from the opening of washing base 22 or from the opening part adverse current of bath base 21 phenomenon from the stench of sewer or insect and so on.In addition, even in the draining of a washing base 22, have under the occasion of hair or rubbish etc., in the outfall 1 of trap body 6 owing to be provided with sieve plate parts 24, these sieve plate parts 24 can get up collections such as hair or rubbish, therefore can not cause them to flow in the trap body 6 or following water side.In addition, add owing to constitute inclined plane 5 on the flowing water road 3 of trap body 6, thereby make the drain discharge of drain trap of present embodiment more be achieved lifting.
The drain trap of structure described in the present embodiment can be installed as follows: towards the opening of use in washing machine waterproof base 20, from the below with the opening of trap body 6 to closing, allow the male screw thread of flange be screwed together in the female screw thread of the outfall 1 of trap body 6 then from the top, thereby gutter is connected with the outlet opening 2 of trap body 6.Thereafter, again simple load and unload water shutoff bowl 9 is installed on the inside of trap body 6 from outfall 1, with flange and the 9 chimeric installations of water shutoff bowl, and then anti-foam pipe 16 is installed on the water shutoff bowl 9 from outfall 1, again water shutoff tube 10 is installed in the water shutoff bowl 9 from outfall 1, is installed together with flange is chimeric again.At this moment,, therefore, be directed to the center of water shutoff tube 10 and water shutoff bowl 9 owing to be provided with blade part 15 in tube portion 13 peripheries of anti-foam pipe 16, can be with anti-foam pipe 16 correct location and installation.In addition, also need sieve plate parts 24 are installed on the flange, last, the joint 18 that more anti-foam pipe 16 is connected in washing machine is connected, and so far, the drain trap installation steps of present embodiment are promptly accused and finished.
The drain trap of present embodiment will be drain flow form as described below: the draining that produces from washing machine is by the scupper hose 19 of washing machine, the inflow entrance 11 that joint 18 flows into anti-foam pipe 16, flow down towards the bottom surface of water shutoff bowl 9 via tube portion 13, after the protuberance 8 with water shutoff bowl 9 impacts, disperse towards periphery, then via guidance part 14 outside flow export 12 is expelled to anti-foam pipe 16.At this moment, impact and the draining of dispersing towards periphery will be at this point flowed along the guiding of the guidance part 14 that the easy curve shape is arranged in protuberance 8.And, owing to draining will present flowing of smooth and easy advantage by means of the guidance part 14 that easy curve is arranged, and discharge by flow export 12 at this point, therefore, to compare with anti-foam pipe 16 in the past, its drain discharge is obviously to promote.Like this by the drainage procedure in the anti-foam pipe 16, because guidance part 14 is contiguous with water shutoff tube 10, or self-styled water drum 10 and to outside extended structure, thereby make be contained in the washing machine drainage a large amount of foams by directly from the guidance part 14 of anti-foam pipe 16 to the 10 external forced discharges of water shutoff tube, guaranteed that the foam in the draining can self-styled water drum 10 and to outfall 1 adverse current.In the draining of anti-foam pipe 16 will be discharged to outside water shutoff bowl 9 via water shutoff tube 10, then from the drain water piping 7 flowing water roads 3 of row in trap body 6 of water shutoff bowl 9.So, via the inclined plane 5 on the flowing water road 3 in the trap body 6, discharge to the outside again from the outlet opening 2 of trap body 6.In addition, the water of discharging from outlet opening 2 then will finally be expelled to sewer.At this moment, rely on the effect on inclined plane 5, it is moving that the draining current will smooth and easyly add potential barrier, simultaneously, owing to inclined plane 5 be in sustained height with the bottom surface of outlet opening 2 bottom, therefore, this water that is added gesture can be expelled to the outside from outlet opening 2 swimmingly.In addition, the effect of the guidance part 14 of easy curve shape is arranged in the protuberance 8 of water shutoff bowl 9 and the anti-foam pipe 16, the impetus of drain flow is strength more, add the effect on the inclined plane 5 of trap body 6, make the draining force and velocity of a current further strengthen again, draining is smooth and easy flows, and finally is expelled to sewer from outlet opening 2.Therefore, the drain discharge of its drain trap also is improved.
Drain trap shown in embodiment 3 Fig. 2-Figure 11 is installed on the use in washing machine waterproof base 20 of the following stated.The top of use in washing machine waterproof base 20 is washing machine body just, and the waterproof base end face has opening.Drain trap is made of trap body 6, flange, water shutoff bowl 9, water shutoff tube 10, anti-foam pipe 16, joint 18, the sieve plate parts 24 of the following stated.Trap body 6 is container-like, includes: the outlet opening 2 that outfall 1, the side that the top draining flows into allows draining discharge.In addition,, be processed with the female screw thread that is screwed with the aftermentioned flange, on outlet opening 2, connect body, and finally be connected with sewer pipe at outfall 1 place.In addition, aftermentioned water shutoff bowl 9 is disposed at inside, and the peripheral space of this water shutoff bowl 9 has then constituted the flowing water road 3 that allows draining pass through.In addition, as Fig. 8-shown in Figure 10, in the present embodiment, allow the part bottom surface on flowing water road 3 of this trap body 6 swell slightly, forming an apex 4, is starting point with this apex 4, forms a continuous descending inclined plane 5 respectively till the bottom surface of outlet opening 2 bottom from both sides.In addition, apex 4 residing positions are: the center line of overlooking (Fig. 8) outlet opening 2, be 260 ° of angles with apex 4 approximately towards the straight line of trap body 6 central points, and, be that the inclined plane 5 of starting point is not the line symmetry with respect to the center line of the outlet opening 2 of trap body 6 with apex 4 when overlooking.And make inclined plane 5 and center line not be the line symmetrical structure like this with respect to outlet opening 2, and compare to and be the line symmetrical structure, verified after experiment, its drain flow will have more vigorous pace.As for the draining on the flowing water road 3 in the trap body 6 of flowing through owing to rely on, and make drain flow more smooth and easy towards the force and velocity of a current of outlet opening 2 from the inclined plane 5 of this apex 4, its will be at this point along the inclined plane 5 and finish drainage procedure smoothly from outlet opening 2.Flange is to have the cross section that is external convex flange to be the parts of L word shape, and periphery then is the aforementioned male screw thread that is screwed with trap body 6.In addition, the effect of this flange is the opening part that trap body 6 is installed on an aforementioned washing base 22, be directed to the opening of a washing base 22, flange and trap body 6 are held under the arm together, the female screw thread of the male screw thread of flange and the outfall 1 of trap body 6 screws togather and screws, and can finish fitting operation.Water shutoff bowl 9 is the container-like bowl-type parts that are disposed in the trap body 6, and inside constitutes can be with the water shutoff space of water discharging part storage collection.As on the top of water shutoff bowl 9, then have and the water that overflows of water storages in the water shutoff bowl 9 can be expelled to water shutoff bowl 9 drain water piping 7 outward.In addition, in the present embodiment, water shutoff bowl 9 by with the chimeric installation of aforementioned flange, can free installation and removal easily.In addition, such as shown in Figure 6, at the bottom center place, constitute the protuberance 8 of a subdued uplift with mild R shape orientation top.Rely on this protuberance 8, when draining when the top of protuberance 8 flows down, in case impact in protuberance 8 places, will make protuberance 8 around form the more surging draining force and velocity of a current.Water shutoff tube 10 is parts cylindraceous, is disposed in the aforementioned water shutoff bowl 9, leaves the gap between its bottom and water shutoff bowl 9 bottom surfaces, has constituted the water shutoff function jointly with water shutoff bowl 9.Water shutoff is in order not allow the foul smell and the insect adverse current of sewer be provided with especially to an indoor side.In addition, water shutoff tube 10 also mosaic is installed on the aforementioned flange, so that installation and removal freely.Shown in Fig. 3, Fig. 4 (a), anti-foam pipe 16 is used for the draining (present embodiment is the draining from washing machine) from the draught engine device is guided and discharged from the lower ends downward trip of water shutoff tube 10.It constitutes cylindric tube portion 13 and guidance part 14, the top of cylindric tube portion 13 wherein is provided with the inflow entrance 11 that the draining that allows from the draining machine flows into, and then is provided with on the guidance part 14 in tube portion 13 lower ends to the side to extend flow export 12 so that the draining in the tube portion 13 is discharged outside anti-foam pipe 16.Based on this guidance part 14, from the inflow entrance 11 of anti-foam pipe 16 and the draining that flows into will be discharged via guidance part 14.In addition, around the tube portion 13 of anti-foam pipe 16, erect and be provided with blade part 15, be used in the water shutoff tube 10 of anti-foam pipe 16, positioning fixing towards side direction.When anti-foam pipe 16 was set on the trap body 6, in order to allow it be arranged at center in water shutoff tube 10 and the water shutoff bowl 9, blade part 15 was vertically arranged with foliated wall.And, in the time of on being arranged at trap body 6,, in water shutoff tube 10, also be provided with peristome 17 for guidance part 14 draining in addition can be circulated from depression angle.In case be provided with the opening of this class, even the mobile next draining in (for example from outfall 1) place beyond anti-foam pipe 16 also can flow to the downstream swimmingly via water shutoff tube 10 under the situation that the guidance part 14 that is not subjected to anti-foam pipe 16 hinders.Joint 18 is connected between the inflow entrance 11 of the scupper hose 19 of washing machine and anti-foam pipe 16, is the body of a union elbow shape.Sieve plate parts 24 and the chimeric installation of flange are configured in outfall 1 place of trap body 6.In addition, water shutoff bowl 9 has constituted draining stream 28 with the gap of water shutoff tube 10, and water shutoff tube 10 has constituted the stream 29 that catchments with the gap of anti-foam pipe 16.As for aforementioned guidance part 14, its effect is that the exit guide that will flow into from the top of anti-foam pipe 16 is to stream 29 and the draining stream 28 of catchmenting.
The elongated cylinder pipe that anti-foam pipe 16 is both ends opens in the time of on being installed on trap body 6, contacts with the inwall of water shutoff tube 10,4 blade parts that carry out stationary positioned, 15 outstanding being arranged on the lateral surface that allow anti-foam pipe 16.Guidance part 14 is arranged at the bottom surface of water shutoff bowl 9, and there is flow export 12 at two ends, is a pipe that is tabular.The upper wall of this guidance part 14 and lower wall are the state that is parallel to each other, and simultaneously, the central authorities of two side are indents, and it is circular-arc that both sides are extended pattern towards flow export 12.The upper wall middle body of guidance part 14 is to be connected with the lower end of anti-foam pipe 16, and the downside corner at the sidewall of guidance part 14 is respectively arranged with and is cut into rectangular grooving 27.Anti-foam pipe 16 and guidance part 14 integrated settings are inserted into the inside of water shutoff bowl 9, guarantee during installation that the lower wall of guidance part 14 contacts with the bottom surface of water shutoff bowl 9.
In addition, by formation as mentioned above, make the inside of guidance part 14 and the stream 29 that catchments directly be connected together via grooving 27.
Next, will be when using the drain trap of said structure, the draining stream problem of discharging from washing machine describes with reference to Fig. 2-Fig. 3.As shown in Figure 2, in trap body 6, the flange of trap body 6 and sieve plate parts 24 top chimeric mutually fixing under almost keeping with the situation of one side with the use in washing machine water-drainage base seat, the top of anti-foam pipe 16 and the scupper hose of washing machine 19 are then by joint 18 use that is interconnected.In addition, though mainly flow out from the draining of washing machine via scupper hose 19,, the wherein part of draining also can leak outside to the use in washing machine water-drainage base seat sometimes.And trap body 6 not only can allow from scupper hose 19 draining of flowing out flow into anti-foam pipe 16, can also allow leak draining to the use in washing machine water-drainage base seat flow into the opening part of sieve plate parts 24 simultaneously.In addition, such as shown in Figure 2, in the inside of trap body 6, the draining that is flowed into will be put aside water storage in water shutoff bowl 9, and its water storage highly reaches as high as the lower end of drain water piping 7.At this moment, be intercalated in anti-foam pipe 16, guidance part 14 in the water shutoff bowl 9, and the inside of water shutoff tube 10 also is to have the water storage of draining savings equally, its water storage highly also is the lower end position that is up to drain water piping 7.About the scupper hose on the washing machine of trap body 6 19, and the upper space of the sieve plate parts 24 of trap body 6, and the Drinage of house pipe arrangement that is connected with sewer, owing to they are communicated with together via above-mentioned draining water storage part, therefore, be to allow water shutoff bowl 9 and water shutoff tube 10 play the function of drain trap.
As Fig. 2, shown in Figure 3, the draining of flowing via the scupper hose 19 of washing machine, joint 18 and to anti-foam pipe 16 flow to the inside of the anti-foam pipe 16 of flowing through the lower end of anti-foam pipe 16 always, and then flows into the inside of guidance part 14.As for the draining that flows into guidance part 14 inside, as shown in Fig. 2 and Fig. 3 (arrow particularly shown in Figure 3), it will be at the lower wall punishment stream of guidance part 14, end direction to guidance part 14 flows, wherein a part will be discharged into formed draining stream 28 between water shutoff bowl 9 and water shutoff tube 10 from the flow export 12 of guidance part 14 ends, other parts then will be by being arranged at guidance part 14 sidewalls the grooving 27 of following corner, and flow into the stream 29 that catchments between water shutoff tube 10 and the anti-foam pipe 16.On the other hand, the draining that flows into from sieve plate parts 24 then flows into the stream 29 that catchments with the pars infundibularis of self-styled water drum 10.
Because water shutoff tube 10 is arranged on the upper wall position of guidance part 14, and the sidewall of guidance part 14 has certain height, therefore having corresponding space empty between the bottom surface of the lower end of water shutoff tube 10 and water shutoff bowl 9 comes, in addition, because the side wall centers portion of guidance part 14 is the indent circular shape, the space that therefore catchment stream 29 and draining stream 28 are reserved by this female parts is interconnected.Also therefore, in case flow into the draining of the stream 29 that catchments, and the discharge level that flows into draining stream 28 has exceeded the water level of the drain water piping 9 of water shutoff bowl 9, will be spilled between trap body 6 and the water shutoff bowl 9 from drain water piping 9, then from here via outlet opening 2 and drainage piping and be expelled to sewer.
As mentioned above, the characteristics of drain trap of the present invention also are: be received from the draining that washing machine flows into via scupper hose 19 by anti-foam pipe 16, the grooving 27 of the following corner by being arranged at guidance part 14 sidewalls, allow the wherein part of draining flow to the stream 29 that catchments, allow other parts flow to draining stream 28.Because the draining of flowing out at stream 29 places that catchment only is a part wherein, therefore can not accumulate under the prerequisite of a large amount of foams in the stream 29 allowing catchment, prevent the phenomenon that a large amount of foams overflow from the sieve plate parts 24 of being located at trap body 6 tops.Particularly because grooving 27 is arranged on the bottom of guidance part 14 sidewalls, therefore compare to draining and the foam that flows through relatively is difficult to by grooving 27 lightlyer above draining.Also therefore, can more efficientlyly prevent the problem that has a large amount of foams to overflow from sieve plate parts 24.
In case the draining force and velocity of a current that flows in the trap body 6 is too quickly, the pipeline till from draining stream 28 to the Drinage of house pipe arrangement will be full of fully because of draining.And because drainage piping is to link to each other with the sewer of house below, therefore, the draining that riddles this section pipeline will be because of siphonage, and moves towards the sewer direction.That is to say that the draining that is stored in the water shutoff bowl 9 will be drawn to drainage piping by outlet opening 2.So, store in drainings in the water shutoff bowl 9 and will become and extremely lack, this will cause the effect of trap not bring into play, and produce broken envelope phenomenon.And it is such as previously described, guidance part 14 does not allow all drainings discharge by draining stream 28, it is provided with grooving 27, to allow partial drainage discharge by the stream 29 that catchments, even thereby cause under the occasion that draining is sucked out in that siphonage takes place, have new draining owing to catchment in the stream 29 and be supplied to, thereby can still guarantee the required water yield.Therefore, even when the draining of water storage in draining stream 28 is sucked out because of siphonage, after siphonage is eliminated,, therefore can effectively prevent from broken to seal the appearance of phenomenon owing to can realize that to draining stream 28 drainings supply with from catchmenting stream 29.
In addition, as embodiments of the invention, except the embodiment of above-mentioned record,, all can make suitable change so long as do not exceed patent request scope.
For example, under aforementioned example, trap body 6, water shutoff bowl 9, anti-foam pipe 16, water shutoff tube 10 sky respectively have certain drainage gap and are disposed with the coaxial circles tubular, but, also be no problem if they are configured by the empty polygonal tubulose of opening certain flowing water gap separately.In addition, in this example, barrel shape water shutoff bowl 9 with bottom came with the trap body and is provided with respectively in 6 minutes, if be wholely set and trap body 6 and water shutoff bowl 9 linked, in the inboard of trap body 6, begin from the diapire of trap body 6, with ring-type partition wall of coaxial formation, thereby constitute water shutoff bowl 9, such formation also is no problem.Even under such formation, draining water storage also can be realized in water shutoff bowl 9 inside, can allow its performance as the function of trap too.
In addition, in the present embodiment, as shown in Fig. 4 (a), as guidance part 14, its use be the flat tube that the corner is respectively arranged with grooving 27 under sidewall, if with this structure of replacement shown in Fig. 4 (b), promptly when upper wall and two side are set, at the guidance part 14 of downside use opening shape, such structure also is no problem.Even lower wall is not set, as long as guidance part 14 is arranged on the bottom surface of water shutoff bowl 9, then the effect identical with the lower wall of guidance part 14 can be played in the bottom surface of water shutoff bowl 9, and this is because portion within it, be the cause from the draining of washing machine drainage flexible pipe 19 of can flowing through.
In addition, in this example, though the structure that adopts is the structure that the place, corner is provided with grooving 27 respectively under the sidewall of guidance part 14, but the position of grooving 27 is not the following corner that can only be arranged on sidewall.Shown in Fig. 4 (b),, also be equally these groovings 27 to be set at certain intervals below sidewall from flow export 12 beginnings.In addition, be replaced in grooving 27 these structures are set, like that, in the sidewall specified location of guidance part 14, it also is same passable that through hole 26 is set shown in Fig. 4 (c).Adopt under the situation of above-mentioned formation, by grooving 27 or through hole 26, guidance part 14 and catchmenting can be interconnected between the stream 29.
In addition, in this example, guidance part 14 be with the position that is communicated with of anti-foam pipe 16, be provided with respectively towards the both direction of side direction, and if guidance part 14 only extended facing one direction also be fine, or being provided with many respectively also is fine.If under such structure that is provided with, as long as grooving 27 or through hole 26 are set respectively on the sidewall of each root guidance part 14 parts again.
Claims (9)
1. drain trap includes:
Container-like trap body (6), it includes superposed draining and flows into outfall (1), the outlet opening (2) that allows draining discharge from the side;
Be disposed in the trap body (6), be provided with the container-like water shutoff bowl (9) of draining drain water piping (7) in the side;
Be tubular, be disposed in the water shutoff bowl (9), constitute the water shutoff tube (10) of water shutoff function jointly with water shutoff bowl (9);
Be disposed at the anti-foam pipe (16) in the water shutoff tube (10), its effect is to be directed in the water shutoff bowl (9) from the draining of the draught engine device lower end from water shutoff tube (10), include tubular tube portion (13) and guidance part (14), wherein the top of tubular tube portion (13) is to allow the inflow entrance (11) that flows into from the draining of draining machine, guidance part (14) then is provided with from tube portion (13) lower end and extends to the side, with the flow export (12) that allows draining discharge to the outside;
Be positioned at the gap between the aforementioned water shutoff tube of aforementioned water shutoff bowl (9) (10), constitute the draining stream (28) that is communicated to outlet opening (2);
Be positioned at the gap between aforementioned water shutoff tube (10) and the aforementioned anti-foam pipe (16), be configured for gathering the stream that catchments (29) of the draining that flows into from aforementioned water shutoff tube (10) top edge;
It is characterized in that: in the described guidance part (14), be provided with the through hole (26) that is connected with the aforementioned stream that catchments (29), or grooving (27).
2. drain trap according to claim 1 is characterized in that: described guidance part (14) is provided with upper wall and sidewall at least, and through hole (26) or grooving (27) are set at the bottom of guidance part (14) sidewall.
3. drain trap according to claim 1 and 2 is characterized in that: under depression angle, the guidance part (14) of described anti-foam pipe (16) is made of the wall portion of a plurality of easy curve shapes.
4. drain trap according to claim 1 and 2 is characterized in that: in the bottom surface of aforementioned water shutoff bowl (9), be provided with the protuberance (8) of subdued uplift upward.
5. drain trap according to claim 3 is characterized in that: in the bottom surface of aforementioned water shutoff bowl (9), be provided with the protuberance (8) of subdued uplift upward.
6. drain trap according to claim 1 and 2 is characterized in that: in tube portion (13) side of aforementioned anti-foam pipe (16), be provided with the blade part (15) that is used for playing location and fixation in water shutoff tube (10).
7. drain trap according to claim 3 is characterized in that: in tube portion (13) side of aforementioned anti-foam pipe (16), be provided with the blade part (15) that is used for playing location and fixation in water shutoff tube (10).
8. drain trap according to claim 4 is characterized in that: in tube portion (13) side of aforementioned anti-foam pipe (16), be provided with the blade part (15) that is used for playing location and fixation in water shutoff tube (10).
9. drain trap according to claim 5 is characterized in that: in tube portion (13) side of aforementioned anti-foam pipe (16), be provided with the blade part (15) that is used for playing location and fixation in water shutoff tube (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010166179XA CN101831942B (en) | 2008-07-30 | 2008-07-30 | Drain trap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010166179XA CN101831942B (en) | 2008-07-30 | 2008-07-30 | Drain trap |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101455210A Division CN101328716B (en) | 2008-07-30 | 2008-07-30 | Water sotrage bend for water drainage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101831942A CN101831942A (en) | 2010-09-15 |
| CN101831942B true CN101831942B (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010166179XA Active CN101831942B (en) | 2008-07-30 | 2008-07-30 | Drain trap |
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| Country | Link |
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| CN (1) | CN101831942B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868886A (en) * | 2017-12-04 | 2019-06-11 | 青岛海尔洗衣机有限公司 | A kind of floor drain for washing machine component |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392826Y (en) * | 1999-11-11 | 2000-08-23 | 建设部居住建筑与设备研究所 | Face-down-bowl type floor drain |
| CN2749956Y (en) * | 2004-11-12 | 2006-01-04 | 朱张根 | Assembled multichannel floor drain |
-
2008
- 2008-07-30 CN CN201010166179XA patent/CN101831942B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2392826Y (en) * | 1999-11-11 | 2000-08-23 | 建设部居住建筑与设备研究所 | Face-down-bowl type floor drain |
| CN2749956Y (en) * | 2004-11-12 | 2006-01-04 | 朱张根 | Assembled multichannel floor drain |
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| CN101831942A (en) | 2010-09-15 |
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