CN209025176U - Floor drain for toilet - Google Patents
Floor drain for toilet Download PDFInfo
- Publication number
- CN209025176U CN209025176U CN201821218667.9U CN201821218667U CN209025176U CN 209025176 U CN209025176 U CN 209025176U CN 201821218667 U CN201821218667 U CN 201821218667U CN 209025176 U CN209025176 U CN 209025176U
- Authority
- CN
- China
- Prior art keywords
- shell
- partition
- filter plate
- floor drain
- bowl
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to indoor drainage engineering device technique field, the more particularly, to floor drain of toilet.Floor drain includes shell, partition, diversion pipe, returns water bowl, filter plate, nut, lead screw and non-return bowl；Partition is located in shell, and is clamped with shell, for shell to be divided into upper cavity and lower chamber；The middle part of partition is equipped with through-hole；Diversion pipe is arranged in through-hole, and top is higher than partition, and constitutes water storage flume with partition and shell；Return the top that water bowl tips upside down on diversion pipe；Filter plate is located at the top of upper cavity, and is clamped with shell；Nut is set on filter plate, and is rotatablely connected with filter plate；The top of lead screw is connect with nut thread, and bottom end is connected with water bowl is returned；Non-return bowl is sheathed on the bottom of diversion pipe.The floor drain, which can be adjusted, returns water bowl to the drag size of water flow, to adjust drainage speed.In addition, the floor drain can be avoided sewage or dirty gas flows backward, guarantee the cleaning of floor drain.
Description
Technical field
The utility model belongs to indoor drainage engineering device technique field, the more particularly, to floor drain of toilet.
Background technique
Floor drain is the important interface for connecting drainage pipeline and flooring, as the important component of indoor drainage, performance
Directly affect indoor air quality.Toilet refers to that dust particle, bacterium within the scope of certain space, in air etc. pollute
Object concentration controls the room in particular range, and medicament compartment and operating room are generally toilet, in addition, partly leading in modern industry
The processing workshop of the products such as the processing workshop and precision instrument such as gyroscope, miniature bearing of body product such as integrated circuit is also
Toilet.It is maintained in the clean condition positioned at clean indoor floor drain, is the key factor for guaranteeing that clean indoor environment is up to standard.
The currently used indoor floor drain of cleaning using water storage flume and returns water bowl and is sealed, prevents in drainage pipeline
Dirty gas or crawler enter the room along floor drain, pollute indoor clean environment, but when sewage effluent, and water flow can be produced by returning water bowl
Raw resistance, reduces drainage speed, causes the ponding at floor drain position.In addition, when the displacement in workshop is larger, gas in drainage system
It is collided with liquid, may cause discharge pipe line and generate instantaneous positive pressure, dirty gas impact is caused to return water bowl, flow backward into interior.
Utility model content
In view of this, the utility model embodiment provides the floor drain for toilet, it is intended to solve in the prior art
Floor drain is easy to hinder draining and easy because discharge pipe line leads to the problem of backing up of sewage caused by positive pressure because returning water bowl.
In order to achieve the above objectives, the technical scheme adopted by the utility model is
Floor drain for toilet, comprising:
Shell, for being embedded in ground；
Partition is clamped, for the cavity of the shell to be divided into the cavity of the shell, and with the shell
Upper cavity and lower chamber；The upper cavity is connected to indoor environment, and the lower chamber is connected to drainage pipeline；The partition
Middle part is equipped with through-hole；
Diversion pipe is arranged in the through-hole of the partition, and for being connected to the upper cavity and the lower chamber；It is described to lead
The top of flow tube is higher than the partition, and constitutes water storage flume with the partition and the shell；
Water bowl is returned, is in bowl-shape, and tip upside down on the top of the diversion pipe, for stopping dirty gas along the diversion pipe
It rises；The outer peripheral surface gap setting for returning water bowl Yu the diversion pipe, and constitute with partition setting for sewage effluent
Space；
Filter plate is clamped, for the sundries in filter sewage positioned at the top of the upper cavity, and with the shell；
Nut is set on the filter plate, and is rotatablely connected with the filter plate；
Lead screw, top are connect with the nut thread, and bottom end is connected with the water bowl that returns, for the drive in the nut
Water bowl is returned described in dynamic lower drive to move up and down；
Non-return bowl is in bowl-shape, and is located in the lower chamber, and be sheathed on the bottom of the diversion pipe, for stopping dirt
Water or foul atmosphere flow backward；The outer peripheral surface gap setting of the non-return bowl and the diversion pipe, and be arranged with the partition and constitute
Space for sewage effluent.
Further, the inner sidewall of the shell is equipped with first boss, and the partition is overlapped on the first boss
On；The outer peripheral surface of the partition is equipped with the first sealing ring for connecting with the housing seal.
Further, the inner sidewall of the shell is equipped with second boss, and to be overlapped on described second convex for the filter plate
On platform；The outer peripheral surface of the filter plate is equipped with the second sealing ring for connecting with the housing seal.
Further, first sealing ring and second sealing ring are silica gel sealing ring.
Further, the outer diameter of the partition is less than the outer diameter of the filter plate；The shell is in up big and down small cone cylinder
Shape.
Further, the filter plate is in up big and down small taper；The upper end of the filter plate is equipped with frame, and the mistake
Filter plate is equipped with equally distributed sieve pore；
The outer diameter of the partition is less than the outer diameter of the frame of the filter plate.
Further, the nut is connected by bearing with the filter plate.
Further, the non-return bowl is bolted with the diversion pipe.
Further, the partition and the diversion pipe are in integral structure.
Further, the top of the shell is equipped with the cover board for sealing, and the cover board is matched with shell overlap joint
It closes.
By adopting the above-described technical solution, the technological progress that the utility model obtains is:
Filter plate is located at the top of upper cavity, and is clamped with shell, for the sundries in filter sewage.Nut is arranged in mistake
On filter plate, and it is rotatablely connected with filter plate.The top of lead screw is connect with nut thread, and bottom end is connected with water bowl is returned, and is used for
Drive is returned water bowl and is moved up and down under the driving of nut, and therefore, when displacement is larger, rotating nuts will return water bowl by lead screw and mention
It rises, reduction returns water bowl to the resistance of water flow, accelerates drainage speed；When not sewage effluent, reversely rotate nut is made by lead screw
The decline of water bowl is returned, guarantee returns water bowl to the sealing effect of diversion pipe.
Non-return bowl is in bowl-shape, and is located in lower chamber, and be sheathed on the bottom of diversion pipe, instantaneous when occurring in drainage pipeline
When positive pressure, non-return bowl plays inhibition to the impact of sewage or dirty gas, avoids sewage or dirty gas directly along water conservancy diversion
Pipe enters the room.The outer peripheral surface gap setting of non-return bowl and diversion pipe, and the space for constituting sewage effluent is set with partition, work as row
When putting sewage, sewage is discharged along gap, guarantees the drainage performance of floor drain.
The beneficial effects of adopting the technical scheme are that the floor drain for toilet in this programme can be adjusted
Section returns the relative altitude between water bowl and partition, by adjusting the drag size for returning water bowl to water flow to carry out to drainage speed
It adjusts.In addition, the non-return bowl in this programme can be avoided sewage or dirty gas flows backward, guarantee the cleaning of floor drain.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without any creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the schematic diagram of the floor drain provided by the embodiment of the utility model for toilet；
Fig. 2 is the schematic diagram of floor drain in the prior art；
Fig. 3 is the assembling schematic diagram of the floor drain provided by the embodiment of the utility model for toilet；
Fig. 4 is the schematic diagram of partition provided by the embodiment of the utility model；
Fig. 5 is the schematic diagram of filter plate provided by the embodiment of the utility model.
Description of symbols:
10- shell, 11- first boss, 12- second boss, 20- partition, the first sealing ring of 21-, 30- diversion pipe, 40- are returned
Water bowl, 50- filter plate, the second sealing ring of 51-, 52- frame, 60- nut, 70- lead screw, 80- non-return bowl, 90- cover board.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these
The utility model also may be implemented in the other embodiments of detail.In other situations, omit to well-known system,
The detailed description of apparatus, circuit and method, in case unnecessary details interferes the description of the utility model.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In order to illustrate technical solution described in the utility model, the following is a description of specific embodiments.
The utility model embodiment provides a kind of floor drain for toilet, in conjunction with shown in Fig. 1 and Fig. 3, for cleaning
The floor drain of room includes shell 10, partition 20, diversion pipe 30, returns water bowl 40, filter plate 50, nut 60, lead screw 70 and non-return bowl 80.
Shell 10 is for being embedded in ground.Partition 20 is located in the cavity of shell 10, and is clamped with shell 10, for by the chamber of shell 10
Body is divided into upper cavity and lower chamber.Upper cavity is connected to indoor environment, and lower chamber is connected to drainage pipeline.In partition 20
Portion is equipped with through-hole.Diversion pipe 30 is arranged in the through-hole of partition 20, and for being connected to upper cavity and lower chamber.The top of diversion pipe 30
Portion is higher than partition 20, and constitutes water storage flume with partition 20 and shell 10.
It is in bowl-shape for returning water bowl 40, and tips upside down on the top of diversion pipe 30, for stopping dirty gas to rise along diversion pipe 30.
The outer peripheral surface gap setting of water bowl 40 Yu diversion pipe 30 is returned, and constitutes the space for being used for sewage effluent with the setting of partition 20.Filtering
Plate 50 is located at the top of upper cavity, and is clamped with shell 10, for the sundries in filter sewage.Nut 60 is set to filter plate 50
On, and be rotatablely connected with filter plate 50.The top of lead screw 70 is threadedly coupled with nut 60, and bottom end is connected with water bowl 40 is returned, and is used
Drive is returned water bowl 40 and is moved up and down under the driving in nut 60.Non-return bowl 80 is in bowl-shape, and is located in lower chamber, and be sheathed on
The bottom of diversion pipe 30, for stopping sewage or foul atmosphere to flow backward.The outer peripheral surface gap setting of non-return bowl 80 and diversion pipe 30,
And the space for being used for sewage effluent is constituted with the setting of partition 20.
Specifically, shell 10 and diversion pipe 30 are vertically arranged, and partition 20 and filter plate 50 are horizontally disposed.Specifically
, filter plate 50 is located at the top for returning water bowl 40.Specifically, diversion pipe 30 is located at part and partition 20 and the shell of 20 top of partition
Body 10 constitutes water storage flume, when floor drain leaves unused, forms water seal for holding thimerosal, prevents dirty gas or crawler along diversion pipe
30 enter the room.
When sewage effluent, filter plate 50 filters out the sundries in sewage, prevents sundries from blocking pipeline；Then sewage enters
Water storage flume, hydraulic pressure make the edge of the sewage in water storage flume return the gap between water bowl 40 and partition 20 and return water bowl 40 and diversion pipe
In gap, inflow diversion pipe 30 between 30；Subsequently sewage flows into non-return bowl 80 along diversion pipe 30, and hydraulic pressure makes non-return bowl 80
In gap of the sewage between gap and non-return bowl 80 and partition 20 between non-return bowl 80 and diversion pipe 30, the row of inflow
In waterpipe.
Resistance can be generated due to returning 40 pairs of water flows of water bowl, when displacement is larger, rotating nuts 60, lead screw 70 is in vertical side
It ramps up, the promotion of water bowl 40 is returned in drive, to make to return water bowl 40 far from water storage flume, therefore can be reduced and be returned 40 pairs of water flows of water bowl
Resistance accelerates drainage speed, and floor drain position is avoided to generate ponding.When not sewage effluent or smaller displacement, reversely rotate
Nut 60, lead screw 70 decline in vertical direction, and the decline of water bowl 40 is returned in drive, make to return water bowl 40 close to partition 20, water bowl is returned in guarantee
To the sealing effect of diversion pipe.
Specifically, non-return bowl 80 is oppositely arranged with water bowl 40 is returned, and the opening of non-return bowl 80 is sheathed on diversion pipe 30
Bottom.As shown in connection with fig. 2, since the quantity of wastewater effluent in each workshop is larger, when the drainage system load of entire factory is larger,
Water flow may generate collision with air-flow, cause to generate instantaneous positive pressure in a certain drainage pipeline, make sewage or dirty gas along water conservancy diversion
Pipe 30 enters the room, and pollutes indoor environment.Therefore, non-return bowl 80 is set in the present embodiment.
When generating instantaneous positive pressure in drainage pipeline, the impact of 80 pairs of sewage of non-return bowl or dirty gas is played obstruction and is made
With avoiding sewage or dirty gas from directly entering the room along diversion pipe 30.Non-return bowl 80 and 30 gap setting of diversion pipe, and with every
20 gap setting of plate, each gap constitute drainage channel, and when sewage effluent, sewage can be discharged along drainage channel, guarantee ground
The drainage performance of leakage.
As one embodiment, as shown in connection with fig. 1, the inner sidewall of shell 10 is equipped with first boss 11, and partition 20 is taken
It connects in first boss 11.As shown in connection with fig. 4, the outer peripheral surface of partition 20 is equipped with first close for being tightly connected with shell 10
Seal 21.
First boss 11 plays a supporting role to partition 20.First sealing ring 21 makes between partition 20 and the side wall of shell 10
It is tightly connected, prevents the dirty gas in drainage pipeline from ascending into interior.And first the frictional force of sealing ring 21 can make
Partition 20 is fixed at first boss 11, and partition 20 is avoided to move radially or axially rotate.
In the present embodiment, as shown in connection with fig. 1, the inner sidewall of shell 10 is equipped with second boss 12, and filter plate 50 overlaps
In second boss 12.As shown in connection with fig. 5, the outer peripheral surface of filter plate 50 is equipped with second close for being tightly connected with shell 10
Seal 51.
Second boss 12 plays a supporting role to filter plate 50.Second sealing ring 51 makes the side wall of filter plate 50 Yu shell 10
Between be tightly connected, preventing the impurity in sewage from entering causes to block in water storage flume.And second sealing ring 51 frictional force energy
It is fixed on filter plate 50 at second boss 12, filter plate 50 is avoided to move radially or axially rotate.
Specifically, the first sealing ring 21 and the second sealing ring 51 are silica gel sealing ring.The elastic force of silica gel sealing ring can
It is connected to partition 20 at first boss 11, also filter plate 50 can be made to be connected at second boss 12, Er Qiean
After the completion of dress, the screen resilience of silica gel sealing ring fits closely partition 20 or filter plate 50 with shell 10, guarantees sealing effect, and
And the frictional force between silica gel sealing ring and shell 10 can make partition 20 or the fixed position of filter plate 50.
As one embodiment, in conjunction with shown in Fig. 1 and Fig. 3, the outer diameter of partition 20 is less than the outer diameter of filter plate 50, shell 10
In up big and down small cone cylinder shape, easy to process and installation.During installation, first non-return bowl 80 and diversion pipe 30 are fixed together,
Then diversion pipe 30 and partition 20 are fixed together, subsequently partition 20 is put into shell, and be connected to first boss 11
Place；Then water bowl 40 will be returned to connect with lead screw 70, nut 60 is rotated further by and adjusts the height for returning water bowl 40, then by filter plate
50 are put into shell, and are connected at second boss 12, complete installation.It is detachably connected between all parts, convenient for periodically clear
It washes, prevents the surface depositing contaminants of each component.
In the present embodiment, referring to figure 1 and figure 5, filter plate 50 is in up big and down small taper.The upper end of filter plate 50 is set
There is frame 52, and filter plate 50 is equipped with equally distributed sieve pore.The outer diameter of partition 20 is less than the outer of the frame 52 of filter plate 50
Diameter.
Filter plate 50 is in up big and down small taper, the area of sewage permeation is increased, to improve effluent flow rate.Filter plate
50 while filter sewage impurity, moreover it is possible to cockroach or mosquito in drainage pipeline be stopped to climb when water seal is failed in water storage flume
Out.Specifically, frame 52 is overlapped in second boss 12, and the outer peripheral surface of frame 52 is equipped with for being tightly connected with shell 10
The second sealing ring 51.
Specifically, nut 60 is connected by bearing with filter plate 50.The cone position of filter plate 50 is equipped with through hole, and axis
It holds and is arranged in through hole.It is fixedly connected between bearing and filter plate 50.Nut 60 is arranged in the mounting hole of bearing, and and axis
It holds and is fixedly connected.Nut 60 can only axially rotate, and cannot move radially, and therefore, when rotating nuts 60, lead screw 70 can
It rises or falls.
Specifically, non-return bowl 80 is bolted with diversion pipe 30.Preferably, the bottom of diversion pipe 30 is equipped with bolt column, and
The opening position of non-return bowl 80 is equipped with bolt hole, and when installation, non-return bowl 80 and diversion pipe 30 are linked together by bolt.
Specifically, partition 20 and diversion pipe 30 are in integral structure, and it is easy to process, it can also guarantee partition 20 and diversion pipe 30
Between leakproofness.
Specifically, the top of shell 10 is equipped with the cover board 90 for sealing, and cover board 90 and shell in conjunction with shown in Fig. 1 and Fig. 3
The overlap joint cooperation of body 10.Specifically, cover board 90 is equipped with the handle for gripping.When sewage effluent, cover board 90 is removed, sewage
It is discharged into drainage pipeline by shell 10.When not sewage effluent, cover board 90 is covered, prevents dirty gas from penetrating into indoor.
The floor drain for toilet in this programme can adjust the relative altitude returned between water bowl and partition, pass through adjusting
Water bowl is returned to the drag size of water flow to which drainage speed be adjusted.In addition, the non-return bowl in this programme can be avoided dirt
Water or dirty gas flow backward, and guarantee the cleaning of floor drain.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to before
Embodiment is stated the utility model is described in detail, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
And range, it should be included within the scope of protection of this utility model.
Claims (10)
1. being used for the floor drain of toilet characterized by comprising
Shell, for being embedded in ground；
Partition is clamped, for the cavity of the shell to be divided into epicoele in the cavity of the shell, and with the shell
Body and lower chamber；The upper cavity is connected to indoor environment, and the lower chamber is connected to drainage pipeline；The middle part of the partition
Equipped with through-hole；
Diversion pipe is arranged in the through-hole of the partition, and for being connected to the upper cavity and the lower chamber；The diversion pipe
Top be higher than the partition, and constitute water storage flume with the partition and the shell；
Water bowl is returned, is in bowl-shape, and tip upside down on the top of the diversion pipe, for stopping dirty gas to rise along the diversion pipe；
The outer peripheral surface gap setting for returning water bowl Yu the diversion pipe, and the sky for being used for sewage effluent is constituted with partition setting
Between；
Filter plate is clamped, for the sundries in filter sewage positioned at the top of the upper cavity, and with the shell；
Nut is set on the filter plate, and is rotatablely connected with the filter plate；
Lead screw, top are connect with the nut thread, and bottom end is connected with the water bowl that returns, under the driving of the nut
Water bowl is returned described in drive to move up and down；
Non-return bowl in bowl-shape, and is located in the lower chamber, and be sheathed on the bottom of the diversion pipe, for stop sewage or
Foul atmosphere flows backward；The outer peripheral surface gap setting of the non-return bowl and the diversion pipe, and constitute and be used for partition setting
The space of sewage effluent.
2. the floor drain according to claim 1 for toilet, it is characterised in that: the inner sidewall of the shell is equipped with the
One boss, and the partition is overlapped in the first boss；The outer peripheral surface of the partition is equipped with for close with the shell
Seal the first sealing ring of connection.
3. the floor drain according to claim 2 for toilet, it is characterised in that: the inner sidewall of the shell is equipped with the
Two boss, and the filter plate is overlapped in the second boss；The outer peripheral surface of the filter plate be equipped with for the shell
The second sealing ring that body is tightly connected.
4. the floor drain according to claim 3 for toilet, it is characterised in that: first sealing ring and described second
Sealing ring is silica gel sealing ring.
5. the floor drain according to claim 1 for toilet, it is characterised in that: the outer diameter of the partition is less than the mistake
The outer diameter of filter plate；The shell is in up big and down small cone cylinder shape.
6. the floor drain according to claim 5 for toilet, it is characterised in that: the filter plate is in up big and down small cone
Shape；The upper end of the filter plate is equipped with frame, and the filter plate is equipped with equally distributed sieve pore；
The outer diameter of the partition is less than the outer diameter of the frame of the filter plate.
7. the floor drain according to claim 1 for toilet, it is characterised in that: the nut passes through bearing and the mistake
Filter plate is connected.
8. the floor drain according to claim 1 for toilet, it is characterised in that: the non-return bowl and the diversion pipe spiral shell
It tethers and connects.
9. the floor drain according to claim 1 for toilet, it is characterised in that: the partition and the diversion pipe are in one
Body structure.
10. the floor drain according to any one of claims 1 to 9 for toilet, it is characterised in that: the top of the shell
Equipped with the cover board for sealing, and the cover board and shell overlap joint cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821218667.9U CN209025176U (en) | 2018-07-31 | 2018-07-31 | Floor drain for toilet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821218667.9U CN209025176U (en) | 2018-07-31 | 2018-07-31 | Floor drain for toilet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209025176U true CN209025176U (en) | 2019-06-25 |
Family
ID=66871793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821218667.9U Expired - Fee Related CN209025176U (en) | 2018-07-31 | 2018-07-31 | Floor drain for toilet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209025176U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282025A (en) * | 2020-10-26 | 2021-01-29 | 刘波 | Prevent stifled floor drain that prevents foul smell excessive |
| CN113482131A (en) * | 2021-07-29 | 2021-10-08 | 张新 | Spring type floor drain |
| CN113712769A (en) * | 2021-08-26 | 2021-11-30 | 中国人民解放军总医院第二医学中心 | Head nursing device for bedridden patient in cardiology department |
-
2018
- 2018-07-31 CN CN201821218667.9U patent/CN209025176U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282025A (en) * | 2020-10-26 | 2021-01-29 | 刘波 | Prevent stifled floor drain that prevents foul smell excessive |
| CN113482131A (en) * | 2021-07-29 | 2021-10-08 | 张新 | Spring type floor drain |
| CN113712769A (en) * | 2021-08-26 | 2021-11-30 | 中国人民解放军总医院第二医学中心 | Head nursing device for bedridden patient in cardiology department |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190625 Termination date: 20210731 |