CN112779957A - Accelerated cleaning device for kitchen - Google Patents
Accelerated cleaning device for kitchen Download PDFInfo
- Publication number
- CN112779957A CN112779957A CN202110195085.3A CN202110195085A CN112779957A CN 112779957 A CN112779957 A CN 112779957A CN 202110195085 A CN202110195085 A CN 202110195085A CN 112779957 A CN112779957 A CN 112779957A
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- China
- Prior art keywords
- vertical
- transmission
- fixed
- bowl washing
- wedge
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/18—Sinks, whether or not connected to the waste-pipe
- E03C1/182—Sinks, whether or not connected to the waste-pipe connected to the waste-pipe
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/26—Object-catching inserts or similar devices for waste pipes or outlets
- E03C1/262—Object-catching inserts or similar devices for waste pipes or outlets combined with outlet stoppers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/30—Devices to facilitate removing of obstructions in waste-pipes or sinks
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
The invention discloses an accelerated cleaning device for kitchens, which comprises a bowl washing tank, a connecting sleeve, a sewer pipe, a leakage net, a counterweight ring, a sealing cover, a rotating shaft, a packing auger, a separating cylinder, a small compression spring, an S-shaped pipe, an accelerating pipe, an action part and a transmission part, wherein the bottom of the bowl washing tank is provided with a vertical connecting sleeve, the bottom of the connecting sleeve is in threaded connection with the vertical sewer pipe, the top end of the sewer pipe is in contact with the bottom end of the bowl washing tank, and the upper part of the connecting sleeve is movably inserted with the vertical leakage net. According to the invention, the wedge-shaped block is pressed manually, so that the teeth are meshed with the transmission gear, then the transmission wedge-shaped block moves downwards along the guide block to overcome the elastic tension of the tension spring, so that the driving bevel gear starts to rotate, and then the packing auger on the rotating shaft is driven to rotate rapidly by the driven bevel gear, the large belt pulley and the small belt pulley, so that foam and oil dirt are discharged from the accelerating tube through the guide of the packing auger.
Description
Technical Field
The invention relates to a cleaning device, in particular to an accelerated cleaning device for kitchens.
Background
Kitchen sinks, also known as kitchen basins and bowl sinks, are classified into steel plate enamels, ceramics, artificial stones, acryl, crystal stone sinks, stainless steels, cast iron enamels, and the like according to their material; can be divided into a single basin, a double basin, a big basin and a small basin, a special-shaped basin and the like according to the style.
Along with the increasing of living standard of people, the food types on dining tables of people are more and more abundant, people gradually change from the original 'full' concept to the 'good eating' concept, the quantity and the types of dishes on the dining tables of people are increased, the cleaning workload of kitchen utensils is indirectly increased, most Chinese dishes have high oil content, so that people need to use a large amount of cleaning agent to achieve enough cleaning and oil removing effects when cleaning kitchenware, most cleaning agents can generate enough foams when being used, the foams are lighter than water and oil, so that oil and flower can be driven, the cleaning agent can achieve good oil removing effects after being used in large amount, but the condition of slow discharge often occurs when being discharged, particularly for a sewer pipe with an S bend, only a large amount of clear water can be used for washing at the moment, or waiting for natural air drying, the former will certainly consume a large amount of water resources and is not environment-friendly enough, and the latter will bring inconvenience to the continuous use of users and highlight the defects of the traditional bowl washing tank.
Disclosure of Invention
The invention aims to provide an accelerated cleaning device for kitchens, which solves the technical problem.
In order to achieve the purpose, the invention adopts the following technical scheme:
an accelerated cleaning device for kitchens comprises a bowl washing tank, a connecting sleeve, a sewer pipe, a leakage net, a counterweight ring, a sealing cover, a rotating shaft, an auger, a separating cylinder, a small compression spring, an S-shaped pipe, an accelerating pipe, an action part and a transmission part, wherein the bottom of the bowl washing tank is provided with the vertical connecting sleeve, the bottom of the connecting sleeve is in threaded connection with the vertical sewer pipe, the top end of the sewer pipe is contacted with the bottom end of the bowl washing tank, the upper part of the connecting sleeve is movably inserted with the vertical leakage net, the top end of the middle part of the leakage net is fixedly provided with the horizontal counterweight ring, the top end of the leakage net is provided with the horizontal sealing cover which is movably inserted with the connecting sleeve, the bottom of the sewer pipe is rotatably connected with the vertical rotating shaft, the upper part of the rotating shaft is a square cylinder, the lower part of the rotating shaft is a cylinder, the upper part of the rotating shaft is movably inserted with the, the bottom end of the packing auger is fixedly provided with a vertical small compression spring, the bottom end of the small compression spring is fixed with the bottom end of the inner wall of the sewer pipe, the right part of the bottom end of the sewer pipe is fixedly provided with a vertical S-shaped pipe, the top end of the right part of the S-shaped pipe is fixedly provided with an accelerating pipe which inclines upwards to the left, the left end of the accelerating pipe is fixed with the right end of the sewer pipe and is communicated with the inner cavity of the sewer pipe and the inner cavity of the S-shaped pipe, the left part of the bowl washing tank is provided with an action part, and the bottom of.
On the basis of the technical scheme, the transmission part comprises a guide cylinder, a pressing wedge block, a support plate, a guide block, a large compression spring, tension springs, a transmission wedge block, teeth, a transmission shaft, a transmission gear and a drive bevel gear, wherein the bottom end of the left part of the bowl washing tank is fixedly provided with a vertical guide cylinder, the interior of the guide cylinder is slidably connected with the vertical pressing wedge block, the front part and the rear part of the left end of the bowl washing tank are respectively fixedly provided with a vertical support plate, the bottoms of the two support plates are symmetrically and slidably connected with two vertical guide blocks, the right ends of the two guide blocks are respectively fixedly provided with a horizontal large compression spring, the right ends of the two large compression springs are respectively fixedly arranged with the left end of the bowl washing tank, the bottom ends of the two guide blocks are respectively fixedly provided with a vertical tension spring, the adjacent ends of the two guide blocks are jointly and slidably connected with a vertical transmission wedge block, and the bottom ends of the two tension springs, a row of horizontal teeth are fixed to the front portion and the rear portion of the right end of the transmission wedge block respectively, a horizontal transmission shaft is connected to the bottom of the supporting plate in a rotating mode, a vertical transmission gear is fixed to the front portion and the rear portion of the transmission shaft respectively, and a vertical driving bevel gear is fixed to the rear portion of the transmission shaft.
On the basis of the technical scheme, the transmission part comprises a support frame, a support shaft, a driven bevel gear, a large belt pulley and a small belt pulley, the left part of the bottom end of the bowl washing tank is fixedly provided with a vertical support frame, the left part of the support frame is rotatably connected with a vertical support shaft, the top end of the support shaft is fixedly provided with a horizontal driven bevel gear, the bottom end of the support shaft is fixedly provided with a horizontal large belt pulley, the bottom end of the rotating shaft is fixedly provided with a vertical small belt pulley, and the large belt pulley is connected with the small belt pulley through a belt.
On the basis of the technical scheme, the guide block can slide left and right along two supporting plates, the transmission wedge block can slide from top to bottom along two guide blocks, the transmission wedge block contacts with pressing the wedge block all the time under the effect of extension spring, tooth on the transmission wedge block is not engaged with drive gear because big compression spring's support does not mesh when not receiving the exogenic action, tooth can mesh with drive gear mutually, initiative bevel gear remains the meshing with driven bevel gear all the time.
Compared with the prior art, the invention has the following advantages: according to the invention, the wedge-shaped block is pressed manually, so that the teeth are meshed with the transmission gear, then the transmission wedge-shaped block moves downwards along the guide block to overcome the elastic tension of the tension spring, so that the driving bevel gear starts to rotate, then the driven bevel gear, the large belt pulley and the small belt pulley drive the packing auger on the rotating shaft to rotate quickly, so that foam and oil dirt are discharged from the accelerating tube through the guide of the packing auger, after the pressing is stopped, the transmission wedge-shaped block moves leftwards rapidly under the action of the elastic force of the large compression spring to remove the meshing between the teeth and the transmission gear, and then the transmission wedge-shaped block moves upwards under the elastic tension of the tension spring, so that the reversal of the packing auger can be greatly avoided, and therefore, a good accelerated cleaning effect is achieved under the condition of reducing water source waste, the normal operation of cleaning and sanitation is ensured, and the separation barrel capable of moving upwards and downwards automatically can ensure that the oil dirt and foam And (4) overflowing of peculiar smell.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the installation of the rotating shaft of the present invention.
Fig. 3 is a schematic view of the installation of the push wedge of the present invention.
Fig. 4 is a schematic view of the mounting of the support shaft of the present invention.
Fig. 5 is a schematic view of the installation of the driving wedge of the present invention.
In the figure: 1. the device comprises a bowl washing tank, 2, a connecting sleeve, 3, a sewer pipe, 4, a leakage net, 5, a balance weight ring, 6, a sealing cover, 7, a rotating shaft, 8, a packing auger, 9, a separating cylinder, 10, a small compression spring, 11, an S-shaped pipe, 12, an accelerating pipe, 13, an action part, 14, a transmission part, 15, a guide cylinder, 16, a pressing wedge block, 17, a support plate, 18, a guide block, 19, a large compression spring, 20, a tension spring, 21, a transmission wedge block, 22, teeth, 23, a transmission shaft, 24, a transmission gear, 25, a driving bevel gear, 26, a support frame, 27, a support shaft, 28, a driven bevel gear, 29, a large belt pulley, 30 and a small belt pulley.
Detailed Description
The invention is explained in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-5, an accelerated cleaning device for kitchen comprises a bowl washing tank 1, a connecting sleeve 2, a sewer pipe 3, a leakage net 4, a counterweight ring 5, a sealing cover 6, a rotating shaft 7, a packing auger 8, a separating cylinder 9, a small compression spring 10, an S-shaped pipe 11, an accelerating pipe 12, an action part 13 and a transmission part 14, wherein the bottom of the bowl washing tank 1 is provided with the vertical connecting sleeve 2, the bottom of the connecting sleeve 2 is in threaded connection with the vertical sewer pipe 3, the top end of the sewer pipe 3 is contacted with the bottom end of the bowl washing tank 1, the upper part of the connecting sleeve 2 is movably inserted with the vertical leakage net 4, the top end of the middle part of the leakage net 4 is fixed with the horizontal counterweight ring 5, the top end of the leakage net 4 is provided with the horizontal sealing cover 6, the sealing cover 6 is movably inserted with the connecting sleeve 2, the bottom of the sewer pipe 3 is rotatably connected with the vertical rotating shaft 7, the upper part, and the lower part is the cylinder, 7 upper portions of pivot are activity pegs graft and are had a vertical auger 8, auger 8 middle part is fixed with a vertical section of thick bamboo 9 of separating, auger 8 bottom mounting has a vertical little compression spring 10, little compression spring 10 bottom is fixed mutually with 3 inner wall bottom ends of downcomer, 3 bottom right parts of downcomer are fixed with a vertical S type pipe 11, 11 right parts top of S type pipe is fixed with accelerating tube 12 of upper left side slope earlier on, accelerating tube 12 left end is fixed mutually with 3 right-hand members of downcomer, and is linked together with 3 inner chambers of downcomer and 11 inner chambers of S type pipe, an action part 13 is installed to bowl washing groove 1 left part, a drive part 14 is installed to bowl washing groove 1 bottom.
The transmission part 14 comprises a guide cylinder 15, a pressing wedge block 16, a support plate 17, a guide block 18, a large compression spring 19, a tension spring 20, a transmission wedge block 21, teeth 22, a transmission shaft 23, a transmission gear 24 and a drive bevel gear 25, wherein the bottom end of the left part of the bowl washing tank 1 is fixedly provided with a vertical guide cylinder 15, the interior of the guide cylinder 15 is slidably connected with the vertical pressing wedge block 16, the front part and the rear part of the left end of the bowl washing tank 1 are respectively fixedly provided with a vertical support plate 17, the bottoms of the two support plates 17 are symmetrically and slidably connected with two vertical guide blocks 18, the right ends of the two guide blocks 18 are respectively fixedly provided with a horizontal large compression spring 19, the right ends of the two large compression springs 19 are respectively fixed with the left end of the bowl washing tank 1, the bottom ends of the two guide blocks 18 are respectively fixedly provided with a vertical tension spring 20, the adjacent ends of the two guide blocks 18 are jointly and slidably connected with a vertical, the bottom ends of the tension springs 20 are fixed to the top end of the bottom of the transmission wedge block 21 respectively, a row of horizontal teeth 22 are fixed to the front portion and the rear portion of the right end of the transmission wedge block 21 respectively, a horizontal transmission shaft 23 is connected to the bottom of the support plate 17 in a rotating mode, a vertical transmission gear 24 is fixed to the front portion and the rear portion of the transmission shaft 23 respectively, and a vertical driving bevel gear 25 is fixed to the rear portion of the transmission shaft 23.
The transmission part 14 comprises a support frame 26, a support shaft 27, a driven bevel gear 28, a big belt pulley 29 and a small belt pulley 30, wherein the vertical support frame 26 is fixed at the left part of the bottom end of the bowl washing tank 1, the vertical support shaft 27 is rotatably connected to the left part of the support frame 26, a horizontal driven bevel gear 28 is fixed at the top end of the support shaft 27, the horizontal big belt pulley 29 is fixed at the bottom end of the support shaft 27, the vertical small belt pulley 30 is fixed at the bottom end of the rotating shaft 7, and the big belt pulley 29 is connected with the small belt pulley 30 through a belt.
The guide block 18 can be along two backup pads 17 horizontal slip, transmission wedge 21 can slide from top to bottom along two guide blocks 18, transmission wedge 21 contacts with pressing wedge 16 all the time under extension spring 20's effect, tooth 22 on the transmission wedge 21 is not meshing mutually with drive gear 24 owing to big compression spring 19's support when not receiving the exogenic action, tooth 22 can mesh mutually with drive gear 24, drive bevel gear 25 remains the meshing with driven bevel gear 28 throughout.
The working principle of the invention is as follows: when drainage is needed, the sealing cover 6 is firstly opened to discharge sewage through the leakage net 4, the sewer pipe 3 and the S-shaped pipe 11, at the moment, the packing auger 8 and the small compression spring 10 are pressed by the counterweight ring 5 and the leakage net 4, the connection between the accelerating pipe 12 and the inner cavity of the sewer pipe 3 is blocked by the separating barrel 9, so that the overflow of peculiar smell in sewage pipes such as methane and the like is avoided, then the leakage net 4 is taken down, food residues are dumped, at the moment, the packing auger 8 is lifted because the packing auger 8 and the small compression spring 10 are not pressed, and the accelerating pipe 12 is restored to be connected with the inner cavity of the sewer pipe 3, so that oil stain and foam can be timely discharged, then the pressing wedge block 16 is manually pressed, the transmission wedge block 21 is firstly pressed in the process that the pressing wedge block 16 starts to move downwards, so that the transmission wedge block 21 overcomes the repulsive force of the large compression spring 19 along with the guide block 18, and the tooth 22 is meshed with, then the transmission wedge block 21 moves downwards along the guide block 18 to overcome the elastic tension of the tension spring 20, so that the drive bevel gear 25 starts to rotate, then the driven bevel gear 28, the large belt pulley 29 and the small belt pulley 30 drive the packing auger 8 on the rotating shaft 7 to rotate quickly, so that foam and oil dirt are discharged from the accelerating tube 12 through the guide of the packing auger 8, after the pressing is stopped, the transmission wedge block 21 moves leftwards rapidly under the elastic force of the large compression spring 19 to release the meshing between the teeth 22 and the transmission gear 24, and then moves upwards under the elastic tension of the tension spring 20, so that the reverse rotation of the packing auger 8 can be greatly avoided, and a good accelerating cleaning effect is achieved.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that variations, modifications, substitutions and alterations can be made in the embodiment without departing from the principles and spirit of the invention.
Claims (4)
1. The utility model provides a kitchen is with cleaning device with higher speed, includes bowl washing groove (1), adapter sleeve (2), downcomer (3), leaks net (4), counter weight ring (5), closing cap (6), pivot (7), auger (8), separates a section of thick bamboo (9), little compression spring (10), S type pipe (11), accelerating tube (12), action part (13), drive part (14), its characterized in that: a vertical connecting sleeve (2) is arranged at the bottom of the bowl washing tank (1), a vertical sewer pipe (3) is in threaded connection with the bottom of the connecting sleeve (2), the top end of the sewer pipe (3) is in contact with the bottom end of the bowl washing tank (1), a vertical leaking net (4) is movably inserted into the upper portion of the connecting sleeve (2), a horizontal counterweight ring (5) is fixed at the top end of the middle of the leaking net (4), a horizontal sealing cover (6) is arranged at the top end of the leaking net (4), the sealing cover (6) is movably inserted into the connecting sleeve (2), a vertical rotating shaft (7) is rotatably connected to the bottom of the sewer pipe (3), the upper portion of the rotating shaft (7) is a square cylinder, the lower portion of the rotating shaft (7) is a cylinder, a vertical packing auger (8) is movably inserted into the upper portion of the rotating shaft (7), a vertical separating cylinder (9) is fixed in the middle of the packing, auger (8) bottom mounting has a vertical little compression spring (10), little compression spring (10) bottom is fixed mutually with downcomer (3) inner wall bottom, downcomer (3) bottom right part is fixed with a vertical S type pipe (11), S type pipe (11) right part top is fixed with accelerating tube (12) of upper left side slope earlier on, accelerating tube (12) left end is fixed mutually with downcomer (3) right-hand member, and is linked together with downcomer (3) inner chamber and S type pipe (11) inner chamber, an action part (13) is installed to bowl washing groove (1) left part, a drive disk assembly (14) is installed to bowl washing groove (1) bottom.
2. An accelerated kitchen cleaning device according to claim 1, characterized in that: the bowl washing machine is characterized in that the transmission part (14) comprises a guide cylinder (15), a pressing wedge block (16), a support plate (17), a guide block (18), a large compression spring (19), a tension spring (20), a transmission wedge block (21), teeth (22), a transmission shaft (23), a transmission gear (24) and a drive bevel gear (25), the bottom end of the left part of the bowl washing tank (1) is fixedly provided with a vertical guide cylinder (15), the inside of the guide cylinder (15) is slidably connected with the vertical pressing wedge block (16), the front part and the rear part of the left end of the bowl washing tank (1) are respectively fixedly provided with a vertical support plate (17), the bottoms of the two support plates (17) are symmetrically and slidably connected with two vertical guide blocks (18), the right ends of the two guide blocks (18) are respectively fixedly provided with a horizontal large compression spring (19), and the right ends of the two large compression springs (19) are respectively fixed with the left end of the bowl washing, two guide block (18) bottom is fixed with a vertical extension spring (20) respectively, two the common sliding connection of guide block (18) adjacent end has a vertical transmission wedge (21), two extension spring (20) bottom is fixed mutually with transmission wedge (21) bottom top respectively, transmission wedge (21) right-hand member front and back two respectively are fixed with a horizontal tooth (22), two backup pad (17) bottom rotates jointly and is connected with a horizontally transmission shaft (23), transmission shaft (23) front and back two respectively are fixed with a vertical drive gear (24), transmission shaft (23) rear portion is fixed with a vertical initiative bevel gear (25).
3. An accelerated kitchen cleaning device according to claim 1, characterized in that: the bowl washing machine is characterized in that the transmission part (14) comprises a support frame (26), a support shaft (27), a driven bevel gear (28), a large belt pulley (29) and a small belt pulley (30), wherein the vertical support frame (26) is fixed to the left part of the bottom end of the bowl washing groove (1), the vertical support shaft (27) is rotatably connected to the left part of the support frame (26), the horizontal driven bevel gear (28) is fixed to the top end of the support shaft (27), the horizontal large belt pulley (29) is fixed to the bottom end of the support shaft (27), the vertical small belt pulley (30) is fixed to the bottom end of the rotating shaft (7), and the large belt pulley (29) is connected with the small belt pulley (30) through a belt.
4. An accelerated kitchen cleaning device according to claim 2 or 3, characterized in that: two guide block (18) can be along two backup pad (17) horizontal slip, transmission wedge (21) can slide from top to bottom along two guide block (18), transmission wedge (21) contact with pressing wedge (16) all the time under the effect of extension spring (20), tooth (22) on transmission wedge (21) are not meshing with drive gear (24) because the support of big compression spring (19) when not receiving the exogenic action, tooth (22) can mesh with drive gear (24) mutually, initiative bevel gear (25) remain the meshing with driven bevel gear (28) all the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110195085.3A CN112779957A (en) | 2021-02-22 | 2021-02-22 | Accelerated cleaning device for kitchen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110195085.3A CN112779957A (en) | 2021-02-22 | 2021-02-22 | Accelerated cleaning device for kitchen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112779957A true CN112779957A (en) | 2021-05-11 |
Family
ID=75761651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110195085.3A Withdrawn CN112779957A (en) | 2021-02-22 | 2021-02-22 | Accelerated cleaning device for kitchen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112779957A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187036A (en) * | 2021-05-06 | 2021-07-30 | 安徽工程大学 | Pipeline structure for preventing second floor pipeline from returning water |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204370527U (en) * | 2014-12-10 | 2015-06-03 | 中国石油天然气股份有限公司 | Sewer joint |
| CN108643291A (en) * | 2018-06-15 | 2018-10-12 | 江苏宝地管业有限公司 | A kind of novel kitchen sink drainage pipeline |
-
2021
- 2021-02-22 CN CN202110195085.3A patent/CN112779957A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204370527U (en) * | 2014-12-10 | 2015-06-03 | 中国石油天然气股份有限公司 | Sewer joint |
| CN108643291A (en) * | 2018-06-15 | 2018-10-12 | 江苏宝地管业有限公司 | A kind of novel kitchen sink drainage pipeline |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187036A (en) * | 2021-05-06 | 2021-07-30 | 安徽工程大学 | Pipeline structure for preventing second floor pipeline from returning water |
| CN113187036B (en) * | 2021-05-06 | 2023-07-21 | 安徽工程大学 | Pipeline structure for preventing second-floor pipeline from returning water |
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Application publication date: 20210511 |
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| WW01 | Invention patent application withdrawn after publication |