CN210066977U - Double-layer deodorant floor drain - Google Patents
Double-layer deodorant floor drain Download PDFInfo
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- CN210066977U CN210066977U CN201920848208.7U CN201920848208U CN210066977U CN 210066977 U CN210066977 U CN 210066977U CN 201920848208 U CN201920848208 U CN 201920848208U CN 210066977 U CN210066977 U CN 210066977U
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Abstract
The utility model discloses a double-layer odor-resistant floor drain, which comprises a floor drain body, wherein the floor drain body comprises a lower barrel and an upper barrel, the inner diameter of the upper barrel is larger than that of the lower barrel, the upper barrel is connected with the lower barrel through a step plate, a valve cover assembly is arranged in the lower barrel of the floor drain body, the valve cover assembly comprises a fixed plate, a bounce valve fixed on the fixed plate and a valve cover arranged on a bounce head of the bounce valve, the fixed plate is abutted against a flange block at the bottom end of the lower barrel, the valve cover can seal or open the upper end of the lower barrel, and the upper surface of the valve cover is always lower than or flush with the top surface of the upper barrel; a space is formed between the outer side surface of the valve cover and the inner wall of the upper cylinder body; and a supporting seat is fixedly sleeved on the jump valve. The utility model provides a dual deodorant guarantee for the deodorant effect of whole floor drain improves greatly, simultaneously, compares with current floor drain, the utility model discloses the faster offal of floor drain can be helped to the drainage rate of double-deck deodorant floor drain.
Description
Technical Field
The utility model belongs to the technical field of the drainage, concretely relates to double-deck deodorant floor drain.
Background
The deodorizing floor drain is an important interface for connecting a drainage pipeline system and indoor ground, is used as an important part of a drainage system in a house, has the performance which directly influences the quality of indoor air, is very important for controlling peculiar smell in a bathroom, and is mostly selected to be used in families at present.
The existing odor-resistant floor drain on the market, as shown in fig. 1, generally includes a water storage pipe 101 and a water collection pipe 102, the water storage pipe 101 is in a U-shaped tube shape, the water collection pipe 102 is inserted into the water storage pipe 101, the bottom end of the water collection pipe 102 points to the bottom of the water storage pipe 101, the water storage pipe 101 is integrally inserted into the sewage pipe 103, a plurality of water outlets 104 are arranged on the side surface of the water storage pipe 101, when in use, water is stored in the water storage pipe 101, so as to seal the bottom end of the water collection pipe 102 and achieve the purpose of odor resistance, however, the odor-resistant floor drain with the structure has the following defects: 1) the distance between the outer wall of the water storage pipe 101 and the inner wall of the sewage pipe 103 determines the drainage speed of the deodorant floor drain, because water is drained from a water outlet 104 on the side surface of the water storage pipe 101, the pipe diameter of the sewage pipe 103 in China is small, and the pipe diameter is a fixed value with a unified standard, in order to obtain a better drainage speed, the pipe diameter of the water storage pipe 101 is usually made as large as possible, so that the inner diameter of the water collection pipe 102 can be made larger, and the drainage speed is improved, but the design mode can slow down the drainage speed on the contrary, because the gap between the outer wall of the water storage pipe 101 and the inner wall of the sewage pipe 103 becomes smaller; 2) when the water level of the water stored in the water storage pipe 101 is lower than the bottom end of the water collecting pipe 102 due to evaporation, the water seal loses the deodorization effect, and deodorization failure is caused.
Disclosure of Invention
The utility model aims to solve the technical problem that a double-deck deodorant floor drain is provided, it can provide dual deodorant guarantee, simultaneously, compares with current floor drain, improves drainage speed greatly.
In order to solve the technical problem, the utility model relates to a technical solution of double-deck deodorant floor drain does:
the utility model discloses a double-layer deodorization floor drain, which comprises a floor drain body, wherein the floor drain body comprises a lower barrel and an upper barrel, the inner diameter of the upper barrel is larger than that of the lower barrel, and the upper barrel is connected with the lower barrel through a step plate; the floor drain comprises a floor drain body and is characterized in that a valve cover assembly is arranged in a lower barrel of the floor drain body, the valve cover assembly comprises a fixing plate, a trip valve fixed on the fixing plate and a valve cover arranged on a bouncing head of the trip valve, the fixing plate is abutted against a flange block at the bottom end of the lower barrel, the valve cover can seal or open the upper end of the lower barrel, and the upper surface of the valve cover is always lower than or flush with the top surface of the upper barrel; a space is formed between the outer side surface of the valve cover and the inner wall of the upper cylinder body; and a supporting seat is fixedly sleeved on the jump valve.
The supporting seat comprises a fixed sleeve, a cutting ring which is arranged on the outer ring of the fixed sleeve and is concentric with the fixed sleeve, and a plurality of support plates which are uniformly distributed on the outer peripheral surface of the fixed sleeve in a circumferential manner, wherein the support plates are intersected with the cutting ring, and the outer ends of the support plates are matched and attached to the inner wall of the lower cylinder body.
The bottom end of the outer end face of the support plate extends downwards to form an elongated plate.
The valve gap includes the blind flange, establishes the installation cover at blind flange bottom surface center and sets up the installation cover outlying annular mounting panel in being in of blind flange bottom surface, the installation ways is established on the spring head of jump valve, the size of annular mounting panel is less than the internal diameter of barrel down, and the lateral surface of annular mounting panel is equipped with the gasket, the gasket can match the inner wall of sealed barrel under.
The valve cover comprises a flange cover and a mounting sleeve arranged at the center of the bottom surface of the flange cover, the mounting sleeve is sleeved on a bouncing head of the bouncing valve, a sealing gasket is arranged on the bottom surface of the flange cover, and the sealing gasket is just matched with the top of the step plate.
A screw hole is formed in the fixing plate, a deodorization device is screwed in the screw hole and comprises a drain pipe and a diversion cover, the lower end of the drain pipe is bent inwards and upwards along the axial direction to form a water collecting pipe, a sealing plate is arranged at the upper end of the water collecting pipe, a plurality of drain holes are formed in the side wall of the water collecting pipe, a water collecting cavity is formed between the outer wall of the water collecting pipe and the inner wall of the drain pipe, and an inner hole of the water collecting pipe is a drain hole; the flow distribution cover is arranged on the sealing plate, and the free end of the flow distribution cover is positioned in the water collection cavity; an O-shaped ring is arranged between the outer peripheral surface of the fixing plate and the inner wall of the lower cylinder.
The fixing plate is provided with grid holes.
The plurality of drain holes comprise a left drain hole and a right drain hole, and the lowest drain water level of the left drain hole is larger than that of the right drain hole.
The top surface exterior angle of reposition of redundant personnel lid is the fillet setting.
The bottom surface of the water collecting cavity is of a semicircular arc structure.
The distance between the outer side wall of the shunting cover and the inner wall of the drain pipe is smaller than the distance between the inner side wall of the shunting cover and the outer wall of the water collecting pipe.
The utility model has the advantages that:
compared with the prior art, the double-layer deodorization floor drain of the utility model achieves the aim of double-layer deodorization through the sealing between the valve cover and the lower cylinder body of the floor drain body and the water seal of the deodorization device, and even if the water seal in the water collection cavity fails due to evaporation under the condition of not being used for a long time, the valve cover and the floor drain body can also achieve the aim of deodorization through sealing;
compared with the prior art, the double-layer deodorization floor drain has the advantages that the supporting seat is sleeved on the jump valve, so that the stability of the jump valve in use is improved;
compared with the prior art, the double-layer deodorization floor drain has the advantages that the supporting seat comprises the fixed sleeve, the cutting ring and the plurality of support plates, so that water flow falling into the floor drain body is cut, the water flow is prevented from flowing into the floor drain body too quickly and too quickly at one time, the flow speed is reduced, and meanwhile, the supporting seat and the fixed plate can filter filiform impurities in water;
compared with the prior art, the double-layer deodorization floor drain has the advantages that when the valve cover seals the floor drain body, the upper surface of the valve cover is lower than the top surface of the upper barrel, and when the floor drain body is opened by the valve cover, the floor drain body realizes the floor drain function, the upper surface of the valve cover is flush with the top surface of the upper barrel, so that the valve cover is arranged in the upper barrel of the floor drain body under any condition, and the user cannot be injured;
compared with the prior art, the double-layer odor-resistant floor drain has the advantages that the drain hole of the odor-resistant device is integrally positioned in the drain pipe of the sewer, and the inner hole of the water collecting pipe is the lower water hole which is positioned in the middle of the odor-resistant device, so that the drainage speed of the double-layer odor-resistant floor drain can be ensured only by ensuring the aperture of the lower water hole;
compared with the prior art, the utility model discloses a double-deck deodorant floor drain, left wash port, right drainage hole are inconsistent to the distance of the chamber bottom that catchments to make the water of the intracavity that catchments have the precedence order from lower drainage hole discharge, if: the water flowing into the lower water hole from the left water drain hole flows to the sewage discharge pipe, the right water drain hole begins to drain along with the rapid rising of the water level, and the water flowing from the right water drain hole to the lower water hole has the secondary impact effect on the water flowing from the left water drain hole to the lower water hole, so that the drainage speed of the floor drain is accelerated.
Drawings
Fig. 1 is a schematic structural diagram of the background art of the present invention;
FIG. 2 is a three-dimensional exploded view of the double-layer anti-odor floor drain of the utility model;
FIG. 3 is a schematic structural view of the double-layer deodorizing floor drain of the present invention in a closed state;
fig. 4 is a schematic structural view of the double-layer deodorization floor drain in an open state;
FIG. 5 is a schematic structural view of the double-layer deodorizing floor drain of the present invention, wherein the bottom of the valve cover is provided with a sealing gasket and the sealing gasket is in a sealed state;
FIG. 6 is a schematic structural view of the double-layer deodorizing floor drain of the present invention, wherein the bottom of the valve cover is provided with a sealing gasket and the valve cover is in an open state;
fig. 7 is a schematic structural view of the installation of the double-layer odor-resistant floor drain and the sewage pipe of the utility model.
Detailed Description
The invention will be described in further detail with reference to the following drawings and detailed description:
referring to fig. 1 to 7, the utility model provides a double-layer deodorization floor drain, which comprises a floor drain body 1, wherein the floor drain body 1 comprises a lower cylinder 2 and an upper cylinder 3, the inner diameter of the upper cylinder 3 is larger than that of the lower cylinder 2, and the upper cylinder 3 is connected with the lower cylinder 2 through a step plate 4; a valve cover assembly is arranged in the lower barrel 2 of the floor drain body 1 and comprises a fixing plate 5, a jump valve 6 fixed on the fixing plate 5 and a valve cover 8 arranged on a bouncing head 7 of the jump valve 6, the fixing plate 5 abuts against a flange block 9 at the bottom end of the lower barrel 2, the valve cover 8 can seal or open the upper end of the lower barrel 2, and the upper surface of the valve cover 8 is always lower than or flush with the top surface of the upper barrel 3; a space 10 is arranged between the outer side surface of the valve cover 8 and the inner wall of the upper cylinder 3; and a support seat 12 is fixedly sleeved on the jump valve 6.
The supporting seat 12 comprises a fixed sleeve 13, a cutting ring 14 which is arranged on the outer ring of the fixed sleeve 13 and is concentric with the fixed sleeve 13, and a plurality of support plates 15 which are uniformly distributed on the outer peripheral surface of the fixed sleeve 13 in a circumferential manner, wherein the plurality of support plates 15 are intersected with the cutting ring 14, and the outer ends of the support plates 15 are matched and attached to the inner wall of the lower cylinder body 2.
The bottom end of the outer end surface of the support plate 15 extends downward to form an elongated plate 16.
A screw hole is formed in the fixing plate 5, a deodorization device 17 is screwed in the screw hole, the deodorization device 17 comprises a drain pipe 18 and a diversion cover 19, the drain pipe 18 and the diversion cover 19 are fixed through a screw 11, the lower end of the drain pipe 18 is bent inwards and upwards along the axial direction to form a water collecting pipe 20, the upper end of the water collecting pipe 20 is provided with a sealing plate 21, the side wall of the water collecting pipe 20 is provided with a plurality of drain holes 22, a water collecting cavity 23 is formed between the outer wall of the water collecting pipe 20 and the inner wall of the drain pipe 18, and an inner hole of the water collecting pipe 20 is a drain hole 24; the shunting cover 19 is arranged on the closing plate 21, and the free end of the shunting cover 19 is positioned in the water collecting cavity 23; an O-shaped ring 25 is arranged between the peripheral surface of the fixing plate 5 and the inner wall of the lower cylinder 2.
The fixing plate 5 has mesh holes. The mesh holes can filter the filaments while realizing the drainage function.
The drain pipe 18 upper end has the external screw thread, is equipped with the internal thread in the fixed plate 5, the external screw thread of drain pipe 18 and the internal thread spiro union of fixed plate 5, thereby makes the utility model discloses a deodorant device 17 of double-deck deodorant floor drain can be dismantled or install according to user's demand to under the prerequisite that has or not deodorant device 17, the utility model discloses all have deodorant function.
The plurality of drain holes 22 include a left drain hole 33 and a right drain hole 34, and a lowest drain water level of the left drain hole 33 is greater than a lowest drain water level of the right drain hole 34, that is: the distance a from the lower edge of the left drain hole 33 to the bottom of the water collection chamber 23 is smaller than the distance b from the lower edge of the right drain hole 34 to the bottom of the water collection chamber 23.
The external corners of the top surface of the shunting cover 19 are provided with fillets 26.
The bottom surface of the water collecting cavity 23 is in a semi-circular arc 27 structure.
The distance between the outer side wall of the diversion cover 19 and the inner wall of the drain pipe 18 is smaller than the distance between the inner side wall of the diversion cover 19 and the outer wall of the water collecting pipe 18. The arrangement with different intervals ensures that the water flow of the floor drain is more stable during drainage, the flow speed of each position is more average, and certain position is not easy to block.
The utility model discloses an in the design process, sealed between valve gap and the floor drain body has adopted two kinds of modes to realize: the first technical scheme is as follows: the valve cover 8 comprises a flange cover 28, an installation sleeve 29 arranged at the center of the bottom surface of the flange cover 28 and an annular installation plate 30 arranged at the bottom surface of the flange cover 28 and positioned at the periphery of the installation sleeve 29, the installation sleeve 29 is sleeved on the bouncing head 7 of the bouncing valve 6, the size of the annular installation plate 30 is smaller than the inner diameter of the lower cylinder body 2, a sealing sheet 31 is arranged on the outer side surface of the annular installation plate 30, the sealing sheet 31 can be sealed on the inner wall of the lower cylinder body 2 in a matching manner, the technical scheme is that the sealing sheet 31 is arranged on the outer side surface of the annular installation plate 30, and the sealing sheet 31 is sealed on the inner wall of the lower cylinder body 2, the structure is simple and easy to use, the inner diameter of the upper cylinder body 3 of the floor drain body 1 can be reduced, the production cost is reduced, but elastic fatigue is easily caused due to deformation, therefore, the designer has made certain improvements to the method and forms a second mode, and the second technical scheme is as follows: referring to fig. 4, the valve cover 8 includes a flange cover 28 and a mounting sleeve 29 disposed at the center of the bottom surface of the flange cover 28, the mounting sleeve 29 is sleeved on the bouncing head 7 of the bouncing valve 6, a sealing gasket 32 is disposed on the bottom surface of the flange cover 28, and the sealing gasket 32 is directly opposite to and matched with the step plate 4. The technical scheme is that a sealing gasket 32 is arranged on the bottom surface of a flange cover 28, and the sealing gasket 32 is used for sealing a step plate 4, so that a channel between an upper barrel 3 and a lower barrel 2 is sealed, the service life of the whole structure is longer, but the technical scheme also has the certain defect that the inner diameter of the upper barrel 3 of a floor drain body 1 needs to be larger, if the inner diameter is too small, the contact surface area between the flange cover 28 and the step plate 4 is too small, the sealing space of the sealing gasket 32 is smaller, and effective sealing performance cannot be realized, and in addition, if the inner diameter of the upper barrel 3 is too small, the interval 10 between a valve cover 8 and the upper barrel 3 cannot be ensured, so that the water drainage speed is reduced. The advantages and the disadvantages of the two sealing structures are different, and a user can select the sealing structures according to actual requirements.
It is following right the utility model discloses a description is made to the theory of operation of double-deck deodorant floor drain:
the double-layer odor-resistant floor drain of the utility model has the advantages that when the drainage function of the floor drain is not realized, the valve cover 8 is pressed down, the bounce valve 6 bounces, the sealing piece 31 or the sealing pad 32 of the valve cover 8 seals the inlet of the lower barrel body 2, the valve cover 8 can prevent odor in a sewer from backflushing indoors, and the garbage on the indoor ground is prevented from falling into the floor drain body 1, so that the sewer is prevented from being blocked; when the floor drain is required to perform a drainage function, the valve cover 8 is pressed down, the jump valve 6 bounces, the sealing sheet 31 on the valve cover 8 is separated from the inner wall of the lower barrel body 2, or the sealing gasket 32 on the valve cover 8 is separated from the step plate 4, so that the lower barrel body 2 is always communicated with the upper barrel body 3, sewage flows to the upper barrel body 3 along the interval 10 between the upper barrel body 3 and the valve cover 8 and then flows to the lower barrel body 2, the supporting seat 12 in the lower barrel body 2 cuts water flow, so that the water flow uniformly falls to the deodorization device, in addition, the supporting seat 12 also blocks and filters filaments in the sewage, the situation that the filaments fall into a sewer and are blocked due to winding of the sewer is well prevented, part of the sewage flowing to the deodorization device 17 flows into the water collecting cavity 23 along the inner wall of the drain pipe 18 of the deodorization device 17, the rest of the sewage flows onto the diversion cover 19, and the outer corner of the top surface of, therefore, the sewage can smoothly flow to the free end of the shunting cover 19, that is, the bottom end of the shunting cover 19, thereby avoiding generating large noise, and here, the sewage falling from the middle of the lower barrel 2 can also smoothly flow into the water collecting cavity 23 through shunting of the shunting cover 19, and finally, the sewage flows to the lower water hole 24 from the left drain hole 33 and the right drain hole 34 along with continuous rising of the water level in the water collecting cavity 23, thereby flowing to the sewer.
When the water flow is too fast, when the water flow rushes to the bottom of the water collecting cavity 23 of the semicircular arc 27, the water flow is sharply rotated by 180 degrees along the semicircular arc 27, then the water flow is upward impacted, and part of the water flow rushes to the inner wall of the fillet 26 of the shunting cover 19 to obtain certain buffering and slow flow, and the water smoothly turns again and falls to the water outlet 24.
When the double-layer deodorant floor drain is used for draining, sewage finally flows into the lower water hole 24 from the drain hole 22 of the water collecting pipe 20 and then flows to a sewer, and in the process, the distance between the lowest point of the left drain hole 33 and the bottom of the water collecting cavity 23 and the distance between the lowest point of the right drain hole 34 and the bottom of the water collecting cavity 23 are different, so that sewage in the water collecting cavity 23 flows to the lower water holes sequentially, and sewage flowing backwards has a secondary impact effect on sewage flowing forwards, so that the flow rate of the sewage is accelerated.
The double-layer odor-resistant floor drain provided by the embodiment of the utility model is described in detail, and the principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the above embodiment is only used for helping to understand the technical scheme disclosed by the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. The utility model provides a double-deck deodorant floor drain, includes the floor drain body, the floor drain body includes barrel and last barrel down, the internal diameter of going up the barrel is greater than the internal diameter of barrel down, and just is connected its characterized in that through the step board between last barrel and the lower barrel: the floor drain comprises a floor drain body and is characterized in that a valve cover assembly is arranged in a lower barrel of the floor drain body, the valve cover assembly comprises a fixing plate, a trip valve fixed on the fixing plate and a valve cover arranged on a bouncing head of the trip valve, the fixing plate is abutted against a flange block at the bottom end of the lower barrel, a grid hole is formed in the fixing plate, the valve cover can seal or open the upper end of the lower barrel, and the upper surface of the valve cover is always lower than or flush with the top surface of the upper barrel; a space is formed between the outer side surface of the valve cover and the inner wall of the upper cylinder body; and a supporting seat is fixedly sleeved on the jump valve.
2. The double-layer deodorization floor drain according to claim 1, characterized in that: the supporting seat comprises a fixed sleeve, a cutting ring which is arranged on the outer ring of the fixed sleeve and is concentric with the fixed sleeve, and a plurality of support plates which are uniformly distributed on the outer peripheral surface of the fixed sleeve in a circumferential manner, wherein the support plates are intersected with the cutting ring, and the outer ends of the support plates are matched and attached to the inner wall of the lower cylinder body.
3. The double-layer deodorization floor drain according to claim 2, characterized in that: the bottom end of the outer end face of the support plate extends downwards to form an elongated plate.
4. The double-layer deodorization floor drain according to claim 1, characterized in that: the valve gap includes the blind flange, establishes the installation cover at blind flange bottom surface center and sets up the installation cover outlying annular mounting panel in being in of blind flange bottom surface, the installation ways is established on the spring head of jump valve, the size of annular mounting panel is less than the internal diameter of barrel down, and the lateral surface of annular mounting panel is equipped with the gasket, the gasket can match the inner wall of sealed barrel under.
5. The double-layer deodorization floor drain according to claim 1, characterized in that: the valve cover comprises a flange cover and a mounting sleeve arranged at the center of the bottom surface of the flange cover, the mounting sleeve is sleeved on a bouncing head of the bouncing valve, a sealing gasket is arranged on the bottom surface of the flange cover, and the sealing gasket is just matched with the top of the step plate.
6. The double-layer deodorization floor drain as claimed in claim 1, 2, 3, 4 or 5, wherein: a screw hole is formed in the fixing plate, a deodorization device is screwed in the screw hole and comprises a drain pipe and a diversion cover, the lower end of the drain pipe is bent inwards and upwards along the axial direction to form a water collecting pipe, a sealing plate is arranged at the upper end of the water collecting pipe, a plurality of drain holes are formed in the side wall of the water collecting pipe, a water collecting cavity is formed between the outer wall of the water collecting pipe and the inner wall of the drain pipe, and an inner hole of the water collecting pipe is a drain hole; the flow distribution cover is arranged on the sealing plate, and the free end of the flow distribution cover is positioned in the water collection cavity; an O-shaped ring is arranged between the outer peripheral surface of the fixing plate and the inner wall of the lower cylinder.
7. The double-layer deodorization floor drain according to claim 6, characterized in that: the plurality of drain holes comprise a left drain hole and a right drain hole, and the lowest drain water level of the left drain hole is larger than that of the right drain hole.
8. The double-layer deodorization floor drain according to claim 7, characterized in that: the top surface exterior angle of reposition of redundant personnel lid is the fillet setting.
9. The double-layer deodorization floor drain according to claim 7, characterized in that: the bottom surface of the water collecting cavity is of a semicircular arc structure.
10. The double-layer deodorization floor drain according to claim 6, characterized in that: the distance between the outer side wall of the shunting cover and the inner wall of the drain pipe is smaller than the distance between the inner side wall of the shunting cover and the outer wall of the water collecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920848208.7U CN210066977U (en) | 2019-06-06 | 2019-06-06 | Double-layer deodorant floor drain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920848208.7U CN210066977U (en) | 2019-06-06 | 2019-06-06 | Double-layer deodorant floor drain |
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| Publication Number | Publication Date |
|---|---|
| CN210066977U true CN210066977U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920848208.7U Active CN210066977U (en) | 2019-06-06 | 2019-06-06 | Double-layer deodorant floor drain |
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| CN (1) | CN210066977U (en) |
Cited By (2)
| 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 |
| WO2023173758A1 (en) * | 2022-03-18 | 2023-09-21 | 中建科工集团有限公司 | Double-layer filtering water seal floor drain |
-
2019
- 2019-06-06 CN CN201920848208.7U patent/CN210066977U/en active Active
Cited By (2)
| 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 |
| WO2023173758A1 (en) * | 2022-03-18 | 2023-09-21 | 中建科工集团有限公司 | Double-layer filtering water seal floor drain |
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