CN219586862U - Floating ball type overflow-proof floor drain device - Google Patents
Floating ball type overflow-proof floor drain device Download PDFInfo
- Publication number
- CN219586862U CN219586862U CN202320308773.0U CN202320308773U CN219586862U CN 219586862 U CN219586862 U CN 219586862U CN 202320308773 U CN202320308773 U CN 202320308773U CN 219586862 U CN219586862 U CN 219586862U
- Authority
- CN
- China
- Prior art keywords
- main body
- floor drain
- floating ball
- circular tube
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Float Valves (AREA)
Abstract
The utility model relates to a floor drain and provides a floating ball type overflow-preventing floor drain device which comprises a main body (13) and a cover body (12) arranged on a liquid discharge pipe (5), wherein the cover body (12) is connected with the main body (13), the main body (13) is tubular, the main body (13) is provided with a liquid inlet (9) and a liquid outlet, the liquid inlet (9) is positioned at the upper end of the main body (13), and a floating ball (7) capable of floating upwards to seal the liquid inlet (9) is arranged in the main body (13). The floating ball type overflow-preventing floor drain device has an overflow-preventing function, and can avoid the occurrence of oil leakage phenomenon of the floor drain.
Description
Technical Field
The utility model relates to a floor drain, in particular to a floating ball type overflow-preventing floor drain device.
Background
The offshore platform is commonly provided with a floor drain device, and the floor drain device belongs to an opening system and is directly connected with a platform open type discharge tank. As shown in fig. 1-2, the existing floor drain of the offshore oil platform mainly comprises a floor drain liquid collecting tank 1, a cover cap 2, a liquid sealing tank 3, a vertical piece support 4 and a liquid discharge pipe 5, wherein the upper port of the cover cap 2 is supported by the vertical piece support 4, water in the liquid sealing tank 3 and the cover cap 2 are matched to play a role in liquid sealing, when liquid is discharged into the floor drain, the liquid flows into the liquid sealing tank 3 after entering the floor drain liquid collecting tank 1, enters the liquid discharge pipe 5 after entering a liquid sealing space formed by the cover cap 2 and the liquid discharge pipe 5, and finally enters an open discharge tank.
However, in an abnormal situation, the drain collecting line is affected by factors such as blockage of sundries or flow failure of the pipeline flowing into the open drain tank, the drain pipe 5 is blocked, and oil with smaller density may overflow to the deck, so that environmental pollution may occur.
In view of the above technical problems, the present utility model provides a floating ball type overflow-preventing floor drain device.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a floating ball type overflow-proof floor drain device, which is added with an overflow-proof function and can avoid the occurrence of oil leakage phenomenon of a floor drain.
In order to solve the technical problems, the utility model provides a floating ball type overflow-preventing floor drain device, which comprises a main body and a cover body, wherein the cover body is used for being installed on a liquid discharge pipe, the cover body is connected with the main body, the main body is tubular, the main body is provided with a liquid inlet and a liquid outlet, the liquid inlet is positioned at the upper end of the main body, and a floating ball capable of floating upwards to seal the liquid inlet is arranged in the main body.
Specifically, the main part is the cylinder tubular, the lid includes interior pipe and outer circular tube, interior pipe with outer circular tube is concentric to be set up and mutual fixed connection, interior pipe with the main part upper end is connected, interior pipe with form between the outer circular tube and be used for the suit annular installation space on the fluid-discharge tube.
Specifically, the external diameter of main part is less than the internal diameter of interior pipe, interior pipe's upper end with the upper end of outer pipe flushes the setting and seals through the ring piece and connect, interior pipe's lower extreme with the upper end of main part flushes the setting and seals through the ring piece and connect.
Preferably, the inner wall of the outer circular tube is provided with upward inverted thorns, and the inverted thorns are uniformly distributed along the circumferential direction of the inner wall of the outer circular tube.
Specifically, the difference between the outer diameter and the inner diameter of the annular mounting space is greater than the wall thickness of the drain pipe.
Preferably, the liquid outlet comprises a main liquid outlet and a secondary liquid outlet, wherein the main liquid outlet is arranged on the circumferential side wall of the middle part of the main body, and the secondary liquid outlet is arranged at the bottom of the main body.
Preferably, the main liquid outlets are elliptical, and each main liquid outlet is uniformly distributed along the circumferential direction of the side wall of the main body.
Preferably, the secondary liquid outlet is provided with a liquid outlet circular pipe extending towards the inside of the main body, and a sewage collecting groove is formed between the liquid outlet circular pipe and the inner side wall of the main body.
Preferably, the maximum discharge amount of the main liquid outlet is not smaller than the maximum discharge amount of the liquid inlet.
Specifically, the liquid inlet is a round hole with the aperture smaller than the sphere diameter of the floating ball.
Through the scheme, the beneficial effects of the utility model are as follows:
according to the floating ball type overflow-preventing floor drain device, the floating ball is arranged in the main body, under a normal state, liquid flows in from the liquid inlet at the upper end of the main body, then enters the liquid discharge pipe through the liquid outlet and finally enters the open type discharge tank, when the liquid discharge pipe is filled with liquid due to abnormal conditions, the liquid inlet is blocked by the floating ball floating upwards under the action of the floating force, so that the overflow of the floating oil with lighter density in the liquid discharge pipe to the floor drain can be prevented, and the environmental pollution is avoided.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:
FIG. 1 is a schematic view of a prior art floor drain;
FIG. 2 is a schematic diagram of a prior art floor drain;
FIG. 3 is a schematic view of a floating ball type overflow prevention floor drain device according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a floating ball type overflow prevention floor drain device according to an embodiment of the present utility model in a use state.
Description of the reference numerals
1 floor drain liquid collecting tank 2 cap
3 liquid sealing groove 4 vertical piece support
5 fluid-discharge tube 6 inverted thorn
7 floating ball 8 dirt collecting tank
9 liquid inlet 10 main liquid outlet
11 times liquid outlet 12 cover body
13 main body
Detailed Description
The following detailed description of the embodiments of the utility model is provided in connection with the accompanying drawings, it being understood that the embodiments described herein are for purposes of illustration and explanation only, and the scope of the utility model is not limited to the following embodiments.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "forming," "providing," "arranging," "connecting," etc. are to be construed broadly, and for example, the connection may be a direct connection, an indirect connection via an intermediary, a fixed connection, a removable connection, or an integral connection; either directly or indirectly via intermediate connectors, or by communication between or interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless otherwise indicated, the azimuth or positional relationships indicated by the azimuth words "upper", "lower", "inner", "outer", etc., are based on the azimuth or positional relationships shown in the drawings, and are merely contacted to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the device or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model; the directional terms of the present utility model should be construed in connection with its actual installation state.
The utility model provides a floating ball type overflow-preventing floor drain device, referring to fig. 3-4, as a specific embodiment of the floating ball type overflow-preventing floor drain device, the floating ball type overflow-preventing floor drain device comprises a main body 13 and a cover body 12 which is arranged on a liquid discharge pipe 5, wherein the cover body 12 is connected with the main body 13, the main body 13 is in a tube shape, the main body 13 is provided with a liquid inlet 9 and a liquid outlet, the liquid inlet 9 is positioned at the upper end of the main body 13, and a floating ball 7 which can float upwards to seal the liquid inlet 9 is arranged in the main body 13. The floating ball type overflow-preventing floor drain device is directly arranged in the existing floor drain through the cover body 12, and in a normal state, liquid flows in through the liquid inlet 9 at the upper end of the main body 13 and then enters the liquid discharge pipe through the liquid outlet, and finally enters the open type discharge tank; when abnormal conditions occur and the inside of the liquid discharge pipe 5 is filled with liquid, under the action of buoyancy, the floating ball 7 floats upwards to block the liquid inlet 9, so that the floating oil with lighter density in the liquid discharge pipe 5 can be prevented from overflowing the floor drain, and environmental pollution is avoided.
As a specific implementation mode of the floating ball type overflow-preventing floor drain device, the main body 13 is in a cylindrical tube shape, the cover body 12 is in a cylindrical tube shape, the side walls of the main body 13 and the cover body 12 are smooth curved surfaces, dirt accumulation in liquid can be effectively avoided, and the possibility of blockage is reduced, wherein the cover body 12 comprises an inner circular tube 121 and an outer circular tube 122, the inner circular tube 121 and the outer circular tube 122 are concentrically arranged and fixedly connected with each other, the inner circular tube 121 is connected with the upper end of the main body 13, and a gap is formed between the inner circular tube 121 and the outer circular tube 122
For sleeving the annular installation space on the drain pipe 5.
It should be noted that, the outer diameter of the main body 13 is smaller than the inner diameter of the inner circular tube 121, that is, the outer diameter of the main body 13 is also smaller than the inner diameter of the liquid discharge tube 5, so that when the cover 12 is sleeved on the upper port of the liquid discharge tube 5, the main body 13 can be placed in the liquid discharge tube 5, and a sufficient gap space is ensured between the main body 13 and the tube wall of the liquid discharge tube 5 for liquid to pass through. In addition, the upper end of the inner circular tube 121 and the upper end of the outer circular tube 122 are arranged in a flush manner and are connected in a closed manner through a circular ring sheet, and the upper end, the outer circular tube and the upper end form an inverted U-shaped section, so that the inner circular tube can be hung at the upper port of the liquid discharge tube 5; the lower end of the inner circular tube 121 is arranged flush with the upper end of the main body 13 and is in closed connection through a circular ring piece, and liquid flows into the main body 13 from the inner circular tube 121 to the liquid inlet 9 at the upper end of the main body 13.
In order to better clamp the cover body 12 on the liquid discharge pipe 5, the inner wall of the outer circular pipe 122 is provided with an inverted thorn 6, and the inverted thorn 6 extends upwards, so that under the condition that the floating ball 7 rises due to buoyancy, the inverted thorn 6 can prevent the floating ball 7 from driving the main body 13 to move upwards along with the upper end of the main body 13, liquid in the liquid discharge pipe 5 is prevented from overflowing, and further, the inverted thorn 6 is uniformly distributed along the circumferential direction of the inner wall of the outer circular pipe 122. In addition, it is understood that the inverted spine 6 may be provided on the outer wall of the inner circular tube 121, or the inverted spine 6 may be provided on both the inner wall of the outer circular tube 122 and the outer wall of the inner circular tube 121.
It should be noted that, the difference between the outer diameter and the inner diameter of the annular installation space is larger than the wall thickness of the liquid discharge tube 5, so as to ensure that the annular installation space can accommodate the liquid discharge tube 5, and the difference between the inner diameter and the outer diameter needs to be controlled to be slightly larger than the wall thickness of the liquid discharge tube 5, so that the gap between the liquid discharge tube 5 and the inner circular tube 121 and the outer circular tube 122 is smaller, and liquid leakage is avoided.
As a specific implementation mode of the floating ball type overflow-preventing floor drain device, the liquid outlet comprises a main liquid outlet 10 and a secondary liquid outlet 11, the main liquid outlet 10 is arranged on the circumferential side wall of the middle part of the main body 13, the floating ball 7 is positioned at the bottom of the main body 1 under the action of gravity under the condition that the liquid discharge pipe 5 is not blocked, the liquid outlet of the main liquid outlet 10 cannot be influenced, the secondary liquid outlet 11 is arranged at the bottom of the main body 13, and liquid flowing into the main body 13 can also flow into the liquid discharge pipe 5 through the secondary liquid outlet 11.
As a specific implementation mode of the floating ball type overflow-preventing floor drain device, a plurality of main liquid outlets 10 are arranged on the circumferential side wall of the middle part of the main body 13, the main liquid outlets 10 are elliptical, and all the main liquid outlets 10 are uniformly distributed along the circumferential direction of the side wall of the main body 13.
As a specific embodiment of the floating ball type overflow preventing floor drain device, the secondary liquid outlet 11 is provided with a liquid outlet circular pipe extending towards the inside of the main body 13, an annular space between the liquid outlet circular pipe and the inner side wall of the main body 13 forms a sewage collecting groove 8, solid impurities sometimes exist in liquid entering the floor drain, when the impurities flow into the main body 13 together with the liquid, under the action of gravity, the impurities fall to the bottom of the main body 13, and due to the existence of the floating ball 7, the floating ball can block the secondary liquid outlet 11, so that the impurities cannot fall to the liquid drain pipe 5 from the secondary liquid outlet 11 but fall to the sewage collecting groove 8, so that the sewage collecting groove 8 can collect the impurities entering the floor drain, and the floating ball type overflow preventing floor drain device can be taken out periodically, and the impurities in the sewage collecting groove 8 are cleaned and then are reloaded on the liquid drain pipe 5.
It should be noted that, the liquid flowing into the liquid inlet 9 is mainly discharged through the main liquid outlet 10 to the liquid inlet and outlet pipe 5, and preferably, the maximum discharge amount of the main liquid outlet 10 is not less than the maximum discharge amount of the liquid inlet 9, as shown in fig. 3 and 4, four main liquid outlets 10 are uniformly distributed around the middle of the main body 13, and the total maximum discharge amount of the four main liquid outlets 10 should not be less than the maximum discharge amount of the liquid inlet 9, so as to avoid that the liquid flow discharged by the main body 13 is less than the liquid flow of the liquid inlet 9, and the liquid inside the main body 13 is accumulated to form a blockage. In addition, it is also necessary to ensure that the gap between the main body 13 and the drain pipe 5 is sufficiently large so that the maximum discharge amount of the annular space between the main body 13 and the drain pipe 5 is also not smaller than the maximum discharge amount of the liquid inlet 9.
As a specific implementation mode of the floating ball type overflow-preventing floor drain device, the liquid inlet 9 is a round hole with the aperture smaller than the sphere diameter of the floating ball 7, so that the liquid inlet 9 can be completely plugged when the floating ball 7 floats upwards, and the floating ball 7 can automatically attach to the round hole under the combined action of buoyancy and the shape of the round hole when the floating ball 7 contacts the liquid inlet 9 even if the floating ball 7 deviates in the floating process due to the round hole of the liquid inlet 9, so that the overflow-preventing effect is ensured.
It should be noted that, the floating ball 7 is preferably a hollow floating ball, so that the density of the floating ball 7 should be ensured to be small enough to float on the floating oil with a lighter density, so that the floating ball 7 is prevented from sinking into the floating oil, and the anti-overflow effect on the floating oil cannot be realized.
For a better understanding of the technical solution of the utility model, the following description is given in connection with relatively preferred constructional features.
Referring to fig. 3 and 4, the floating ball type overflow preventing floor drain device of the utility model mainly comprises a main body 13 and a cover body 12, wherein the cover body 12 is connected with the main body 13, the cover body 12 and the main body 13 are in a cylindrical tube shape, the cover body 12 is provided with an inner circular tube 121 and an outer circular tube 122 which are concentrically arranged and fixedly connected with each other, the upper ends of the inner circular tube 121 and the outer circular tube 122 are arranged in a flush manner and are in closed connection through circular ring sheets, so that an annular installation space for sleeving the drain tube 5 is formed between the inner circular tube 121 and the outer circular tube 122, the lower end of the inner circular tube 121 is arranged in a flush manner with the upper end of the main body 13 and is in closed connection through the circular ring sheets, and therefore, the floating ball type overflow preventing floor drain device of the utility model can be directly inserted into the drain tube 5 of the existing floor drain, is convenient and quick to install, and the upward barbed 6 is arranged on the inner wall of the outer circular tube 122, so as to ensure the clamping of the drain tube 5 to realize the fixing of the drain device. The top of the upper end of the main body 13 is provided with a circular liquid inlet 9, elliptical main liquid outlets 10 are uniformly distributed in the middle of the main body 13 along the circumferential direction of the pipe wall, the bottom of the main body 13 is provided with a secondary liquid outlet 11, and the main body 13 is internally provided with a floating ball 7 which can float upwards to seal the liquid inlet 9.
The floating ball type overflow-preventing floor drain device is inserted into a floor drain, and the specific working principle is as follows:
under normal state, liquid flows into the liquid sealing groove 3 after entering the floor drain liquid collecting groove 1, flows to the floating ball type overflow preventing floor drain device after passing through the liquid sealing space formed by the cap 2 and the liquid discharging pipe 5, enters the main body 13 from the liquid inlet 9 and is discharged into the liquid discharging pipe 5 through the main liquid outlet 10 or the secondary liquid outlet 11, finally enters the open type discharge tank, and as the secondary liquid outlet 11 at the bottom is provided with a liquid outlet circular pipe extending towards the inside of the main body 13, a sewage collecting groove 8 is formed in an annular space between the liquid outlet circular pipe and the inner side wall of the main body 13, sundries along with the liquid flowing into the main body 13 can be collected through the sewage collecting groove 8, so that the cleaning can be conveniently carried out at the subsequent timing;
when abnormal conditions occur and the inside of the liquid discharge pipe 5 is filled with liquid, the floating ball 7 floats upwards under the action of the floating force to seal the liquid inlet 9, so that the floating oil with lighter density in the liquid discharge pipe 5 can be prevented from overflowing from the liquid inlet 9 to the floor drain, and environmental pollution can be effectively avoided.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.
Claims (10)
1. The utility model provides a floater anti-overflow floor drain device, its characterized in that includes main part (13), is used for installing lid (12) on fluid-discharge tube (5), lid (12) with main part (13) are connected, main part (13) are tubulose, main part (13) are provided with inlet (9) and liquid outlet, inlet (9) are located the upper end of main part (13), main part (13) are built-in to have can come-up in order to right floater (7) of inlet (9) shutoff.
2. The floating ball type overflow-preventing floor drain device according to claim 1, wherein the main body (13) is cylindrical, the cover body (12) comprises an inner circular tube (121) and an outer circular tube (122), the inner circular tube (121) and the outer circular tube (122) are concentrically arranged and fixedly connected with each other, the inner circular tube (121) is connected with the upper end of the main body (13), and an annular installation space for sleeving the liquid discharge tube (5) is formed between the inner circular tube (121) and the outer circular tube (122).
3. The floating ball type overflow prevention floor drain device according to claim 2, wherein the outer diameter of the main body (13) is smaller than the inner diameter of the inner circular tube (121), the upper end of the inner circular tube (121) and the upper end of the outer circular tube (122) are arranged in a flush manner and are in closed connection through a circular ring piece, and the lower end of the inner circular tube (121) is arranged in a flush manner and is in closed connection through a circular ring piece with the upper end of the main body (13).
4. The floating ball type overflow prevention floor drain device according to claim 2, wherein the inner wall of the outer circular tube (122) is provided with upward inverted thorns (6), and the inverted thorns (6) are uniformly distributed along the circumferential direction of the inner wall of the outer circular tube (122).
5. Float-type overflow-preventing floor drain device according to claim 2, characterized in that the difference between the outer diameter and the inner diameter of the annular installation space is larger than the wall thickness of the drain pipe (5).
6. The floating ball type overflow prevention floor drain device according to claim 1, wherein the liquid outlet comprises a main liquid outlet (10) and a secondary liquid outlet (11), the main liquid outlet (10) is arranged on the circumferential side wall of the middle part of the main body (13), and the secondary liquid outlet (11) is arranged at the bottom of the main body (13).
7. The floating ball type overflow prevention floor drain device according to claim 6, wherein the main liquid outlets (10) are elliptical, and each main liquid outlet (10) is uniformly distributed along the circumference of the side wall of the main body (13).
8. The floating ball type overflow prevention floor drain device according to claim 6, wherein the secondary liquid outlet (11) is provided with a liquid outlet circular pipe extending towards the inside of the main body (13), and a sewage collecting groove (8) is formed between the liquid outlet circular pipe and the inner side wall of the main body (13).
9. The floating ball type overflow prevention floor drain device according to claim 6, wherein the maximum discharge amount of the main liquid outlet (10) is not smaller than the maximum discharge amount of the liquid inlet (9).
10. The floating ball type overflow prevention floor drain device according to any one of claims 1-9, wherein the liquid inlet (9) is a round hole with a pore diameter smaller than the sphere diameter of the floating ball (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320308773.0U CN219586862U (en) | 2023-02-21 | 2023-02-21 | Floating ball type overflow-proof floor drain device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320308773.0U CN219586862U (en) | 2023-02-21 | 2023-02-21 | Floating ball type overflow-proof floor drain device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219586862U true CN219586862U (en) | 2023-08-25 |
Family
ID=87686884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320308773.0U Active CN219586862U (en) | 2023-02-21 | 2023-02-21 | Floating ball type overflow-proof floor drain device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219586862U (en) |
-
2023
- 2023-02-21 CN CN202320308773.0U patent/CN219586862U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102390487B (en) | Closable non-return automatic water discharging device | |
| CN219586862U (en) | Floating ball type overflow-proof floor drain device | |
| CN212294861U (en) | High-rise water supply device capable of preventing secondary water pollution | |
| CN210852874U (en) | Central air conditioning condensate water drain valve for ships | |
| CN211922917U (en) | Town road drainage device | |
| CN204081022U (en) | Fluid system pure air partition apparatus | |
| CN219732241U (en) | Device capable of preventing liquid and gas from flowing backwards | |
| CN111794318A (en) | High-rise water supply device capable of preventing secondary water pollution | |
| CN216890213U (en) | Oil-water separation cylinder | |
| CA2685803C (en) | Pressure tank | |
| CN218988983U (en) | Water distribution system of hydrolysis tank | |
| CN218911687U (en) | Can dismantle drainage pre-buried device | |
| CN217150567U (en) | Odor-returning-preventing composite sealing floor drain | |
| CN214618995U (en) | Automatic drainer for automobile gas tank | |
| JP2006257662A (en) | Draining facility | |
| CN101113406A (en) | Full-automatic feeding-discharging maintenance-free environment protective methane tank | |
| CN218508628U (en) | Water seal floor drain capable of preventing overflow | |
| CN220885509U (en) | Emergency drainage device for oil tank | |
| CN212358532U (en) | Floating ball floor drain with anti-reflux function | |
| CN213868173U (en) | Deodorant floor drain | |
| CN220142941U (en) | Vertical gas-liquid separator | |
| CN210291045U (en) | Waterproof protection device for gas pipeline | |
| CN218091185U (en) | Floor drain for clean room | |
| CN218562536U (en) | Drainage system for borderless pool | |
| RU2780596C1 (en) | Device for emergency liquid discharge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |