CN109680781B - Assembled building external wall panel drainage structures - Google Patents
Assembled building external wall panel drainage structures Download PDFInfo
- Publication number
- CN109680781B CN109680781B CN201811642229.XA CN201811642229A CN109680781B CN 109680781 B CN109680781 B CN 109680781B CN 201811642229 A CN201811642229 A CN 201811642229A CN 109680781 B CN109680781 B CN 109680781B
- Authority
- CN
- China
- Prior art keywords
- pipe
- cavity
- liquid outlet
- outer pipe
- inner pipe
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Building Environments (AREA)
Abstract
The invention belongs to the technical field of building equipment, and particularly discloses a drainage structure of an assembled building external wall board, which comprises a liquid outlet box, an inner pipe and an outer pipe, wherein the bottom of the liquid outlet box is provided with a drain hole; the two ends of the inner pipe are respectively a water inlet end of the inner pipe and a water outlet end of the inner pipe, the two ends of the outer pipe are respectively a water inlet end of the outer pipe and a water outlet end of the outer pipe, water leakage holes are formed in the side wall of the outer pipe extending into the cavity of the external wall-hung plate, the water outlet end of the inner pipe penetrates into the liquid outlet cavity of the inner pipe through the liquid outlet cavity of the outer pipe and the vertical partition plate, and the water outlet; also comprises a power part. This drainage structures can be in time with the rainwater in the externally-hung wallboard cavity to comparatively thorough discharge.
Description
Technical Field
The invention belongs to the technical field of building equipment, and particularly discloses a drainage structure of an assembled building external wall panel.
Background
The assembly type building external wall board is a peripheral protective structure of an inner wall, and during production, the external wall board is prefabricated in a factory after being disassembled according to a certain specification, then is transported to a site for assembly, and the assembly position is treated by gluing. Because the external wall board can leave a large amount of assembly joints when being assembled, rainwater can infiltrate between the external wall board and the inner wall through the joints, and a cavity is reserved inside the external wall board when the external wall board is generally designed, rainwater and condensed water can be deposited in the cavity frequently, the use safety of the external wall board and even the whole building is seriously influenced, and therefore, the drainage of the cavity part is very important for the safe use of the building.
In order to solve the problems, the Chinese patent of the invention with the granted publication number of CN106013474B discloses a drainage structure of an assembled building external wallboard, which comprises a drain pipe which is arranged at the lowest part of a vertical splicing seam of the external wallboard and is horizontally arranged, wherein the drain pipe and the external wallboard form a whole, the drain pipe comprises a pipe seat which forms a water collecting tank with the vertical splicing seam of the external wallboard and a pipe column which protrudes towards the axial direction of the pipe seat and is communicated with the pipe seat, the pipe column is exposed out of the outer surface of the external wallboard, and a one-way valve is arranged in the pipe.
Although the water in the cavity of the external wall panel can be discharged, the structure can not completely discharge the water in the cavity of the external wall panel due to a certain height difference between the pipe column and the pipe seat, so that the external wall panel is in a humid environment for a long time, and the structural safety of the external wall panel of the assembly type building is greatly influenced. In addition, the pipe seat department sets up the water catch bowl, and the rainwater flows in the water catch bowl along the externally-hung wallboard cavity, and only after the rainwater reached certain degree, the rainwater just can produce the water pressure through the dead weight to the pipe tongue of drain pipe and push away the pipe tongue to make the rainwater discharge, and the drainage structure of above-mentioned patent can only be discharged (can not in time discharge the rainwater in the externally-hung wallboard cavity) after the rainwater in the externally-hung wallboard cavity accumulated to certain degree promptly, and the rainwater still can make the externally-hung wallboard be in humid environment for a long time, thereby influences the safe handling of building.
Disclosure of Invention
The invention aims to provide a drainage structure of an assembled building external wall panel, which can thoroughly and timely drain rainwater in a cavity of the external wall panel.
In order to achieve the purpose, the basic scheme of the invention is as follows:
the assembled drainage structure for the building external wall panel comprises a liquid outlet box, an inner pipe and an outer pipe sleeved outside the inner pipe, wherein a drain hole is formed in the bottom of the liquid outlet box;
the two ends of the inner pipe are respectively a water inlet end of the inner pipe and a water outlet end of the inner pipe, the two ends of the outer pipe are respectively a water inlet end of the outer pipe and a water outlet end of the outer pipe, the water inlet end of the inner pipe extends out from the water inlet end of the outer pipe, the water outlet end of the inner pipe extends out from the water outlet end of the outer pipe, the water inlet end of the inner pipe and the water inlet end of the outer pipe both extend into the cavity of the external wall panel, the side wall of the outer pipe extending into the cavity of the external wall panel is provided with water leakage holes, the water outlet end; the device also comprises a power part which can simultaneously reduce the pressure in the liquid outlet cavity of the outer pipe and increase the pressure in the liquid outlet cavity of the inner pipe.
The working principle of the basic scheme is as follows:
(1) the rainwater seeps between the external wall board and the inner wall through the splicing seam of the external wall board, so that less rainwater seeps into the cavity of the external wall board, and most of the rainwater can enter the water inlet end of the outer pipe along the inner side wall of the external wall board and the outer side wall of the inner wall. The water inlet end of the inner pipe extends out of the water inlet end of the outer pipe, and the side wall of the outer pipe extending into the cavity of the external wall board is provided with water leakage holes, so that the outer pipe is mainly used for discharging rainwater at the bottom of the cavity of the external wall board.
When raining, the power part is started, the power part enables the pressure in the outer pipe liquid outlet cavity to be reduced and the pressure in the inner pipe liquid outlet cavity to be increased, the outer pipe liquid outlet cavity can suck rainwater at the bottom of the external wall panel cavity into the outer pipe liquid outlet cavity, and therefore the rainwater in the external wall panel cavity is rapidly discharged. In addition, when the pressure in the liquid outlet cavity of the outer pipe is reduced, the pressure in the liquid outlet cavity of the inner pipe is increased, so that air pressure of the water inlet end of the inner pipe → the water inlet end of the outer pipe is formed, and the drainage of rainwater deposited at the bottom of the cavity of the outer wall hanging plate is further accelerated.
After the rain stops, the power part is started again, the power part enables the pressure in the liquid outlet cavity of the outer pipe to be reduced and the pressure in the liquid outlet cavity of the inner pipe to be increased, and at the moment, the air pressure formed by the water inlet end of the inner pipe → the water inlet end of the outer pipe is beneficial to drying the rainwater at the bottom of the cavity of the external wall hanging plate, so that the external wall hanging plate is effectively prevented from being in a humid environment for a long time, and the structural safety of the external wall.
The air inlet box body is internally provided with a first partition plate which is horizontally arranged and a second partition plate which is vertically arranged, the second partition plate is positioned below the first partition plate, a power chamber is arranged above the first partition plate, the power part is arranged in the power chamber, a first cavity and a second cavity are respectively arranged below the first partition plate, a first driving shaft which is vertically arranged is arranged in the first cavity, the bottom of the first driving shaft is fixedly connected with a first sliding block, the first sliding block is hermetically and vertically connected in the first cavity in a sliding manner, and a first tension spring which can drive the first sliding block to vertically and upwardly slide is arranged in the first cavity; a first air inlet pipe communicated with the outer pipe liquid outlet cavity and a first air outlet pipe communicated with the outside are arranged in the first cavity; a second driving shaft which is vertically arranged is arranged in the second chamber, a second sliding block is fixedly connected to the bottom of the second driving shaft, the second sliding block is hermetically and vertically connected into the second chamber in a sliding manner, and a second tension spring capable of driving the second sliding block to vertically slide upwards is arranged in the second chamber; a second air inlet pipe and a second air outlet pipe are arranged in the second cavity, and a second air outlet pipe communicated with the inner pipe liquid outlet cavity and a second air inlet pipe communicated with the outside are arranged in the second cavity; the first air inlet pipe, the first air outlet pipe, the second air outlet pipe and the second air inlet pipe are internally provided with one-way valves. The structure can simply realize that the pressure in the liquid outlet cavity of the outer pipe is reduced, and the pressure in the liquid outlet cavity of the inner pipe is increased.
Further, the power part includes the motor and is the axis of rotation of horizontal arrangement, the output shaft and the axis of rotation fixed connection of motor, be equipped with the first cam that can order about the vertical downstream of first drive shaft and the second cam that can order about the vertical downstream of second drive shaft in the axis of rotation, the drive end of first cam and the drive end of second cam are in the axis both sides of axis of rotation respectively, can be comparatively simple realization first drive shaft and second drive shaft in turn, reciprocal vertical movement.
Furthermore, the inner pipe is opened upwards at the water inlet end, and the upward opening of the water inlet end of the inner pipe is beneficial to reducing the distance between the top of the water inlet end of the inner pipe and the inner side wall of the cavity of the externally-hung wallboard, so that the air pressure strength formed by the water inlet end → the water inlet end of the outer pipe is increased, and the discharge of rainwater deposited at the bottom of the cavity of the externally-hung wallboard is further accelerated.
Furthermore, the vertical separation plate is arranged at the central line of the liquid outlet box, the water outlet holes are arranged at two sides of the vertical separation plate, and the horizontal distance between the water outlet holes and the vertical separation plate is 0.3-0.5 mm. When the horizontal distance between the lower water hole and the vertical partition plate is 0.3-0.5mm, rainwater is discharged out of the device through the lower water hole (the lower water hole is sealed by the rainwater), and the arrangement of the lower water hole hardly influences the air pressure in the outer pipe liquid outlet cavity and the inner pipe liquid outlet cavity.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an embodiment of the invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a liquid outlet box 1, a water outlet hole 11, a vertical partition plate 12, an outer pipe liquid outlet cavity 13, an inner pipe liquid outlet cavity 14, an inner pipe 2, an outer pipe 3, an air inlet box body 4, a power chamber 41, a first cavity 42, a first sliding block 421, a first air inlet pipe 422, a second cavity 43, a second sliding block 431, a second air outlet pipe 432, a power part 5, a first cam 51, a second cam 52, an external wall board 6 and an external wall board cavity 61.
As shown in fig. 1 and 2, the assembly type building external wall panel drainage structure comprises a liquid outlet box 1, an inner tube 2 and an outer tube 3 sleeved outside the inner tube 2, wherein a drain hole 11 is formed in the bottom of the liquid outlet box 1, a vertical partition plate 12 is arranged at the center line of the liquid outlet box 1, the liquid outlet box 1 is divided into an outer tube liquid outlet cavity 13 and an inner tube liquid outlet cavity 14 by the vertical partition plate 12, the drain hole 11 is formed in two sides of the vertical partition plate 12, and the horizontal distance between the drain hole 11 and the vertical partition plate 12 is 0.3-0.5 mm.
The two ends of the inner pipe 2 are respectively an inner pipe water inlet end and an inner pipe water outlet end, the inner pipe water inlet end is upwards opened, the two ends of the outer pipe 3 are respectively an outer pipe water inlet end and an outer pipe water outlet end, the inner pipe water inlet end extends out from the outer pipe water inlet end (as shown in figure 2), the inner pipe water outlet end extends out from the outer pipe water outlet end, the inner pipe water inlet end and the outer pipe water inlet end both extend into the cavity 61 of the external wall panel, the side wall of the outer pipe 3 extending into the cavity 61 of the external wall panel is provided with water leakage holes, the inner pipe water outlet end penetrates into the inner pipe liquid outlet cavity 14 through the outer pipe liquid outlet cavity 13 and the vertical partition; and a power part 5 which can simultaneously reduce the pressure in the outer pipe liquid outlet cavity 13 and increase the pressure in the inner pipe liquid outlet cavity 14.
This drainage structures still includes the box 4 that admits air, is equipped with first division board and the second division board that is in first division board below in the box 4 that admits air, and first division board is the level and arranges, and the second division board is vertical arranging, and first division board top is power house 41, is equipped with in the power house 41 power spare 5. A first cavity 42 and a second cavity 43 are respectively arranged below the first partition plate, a first driving shaft which is vertically arranged is arranged in the first cavity 42, the bottom of the first driving shaft is fixedly connected with a first sliding block 421, the first sliding block 421 is hermetically and vertically connected in the first cavity 42 in a sliding manner, and a first tension spring which can drive the first sliding block 421 to vertically slide upwards is sleeved on the first driving shaft; a first air inlet pipe 422 communicated with the outer pipe liquid outlet cavity 13 and a first air outlet pipe communicated with the outside are arranged in the first cavity 42; a second driving shaft which is vertically arranged is arranged in the second cavity 43, a second sliding block 431 is fixedly connected to the bottom of the second driving shaft, the second sliding block 431 is hermetically and vertically connected into the second cavity 43 in a sliding manner, and a second tension spring which can drive the second sliding block 431 to vertically slide upwards is sleeved on the second driving shaft; a second air inlet pipe and a second air outlet pipe 432 are arranged in the second cavity 43, and a second air outlet pipe 432 communicated with the inner pipe liquid outlet cavity 14 and a second air inlet pipe communicated with the outside are arranged in the second cavity 43; the first air inlet pipe 422, the first air outlet pipe, the second air outlet pipe 432 and the second air inlet pipe are all internally provided with one-way valves.
The power part 5 comprises a motor and a rotating shaft which is horizontally arranged, an output shaft of the motor is fixedly connected with the rotating shaft, a first cam 51 which can drive a first driving shaft to vertically move downwards and a second cam 52 which can drive a second driving shaft to vertically move downwards are sleeved on the rotating shaft, and the driving end of the first cam 51 and the driving end of the second cam 52 are respectively positioned on two sides of the axis of the rotating shaft.
The concrete implementation process of the drainage structure is as follows:
when raining, the starter motor, the motor drives first cam 51 and second cam 52 through the axis of rotation and rotates, first cam 51 can order about the vertical downstream of first drive shaft, second cam 52 can order about the vertical downstream of second drive shaft, because the drive end of first cam 51 and the drive end of second cam 52 are in the axis both sides of axis of rotation respectively, cup jointed the first extension spring that can order about the vertical gliding upwards of first slider 421 in the first drive shaft, cup jointed the second extension spring that can order about the vertical gliding upwards of second slider 431 in the second drive shaft, so under the effect of first cam 51 and second cam 52, vertical downstream in turn can be given first drive shaft and second drive shaft.
When the first driving shaft moves vertically upwards, the gas in the outer tube liquid outlet cavity 13 enters the first chamber 42, so that the pressure in the outer tube liquid outlet cavity 13 is reduced, and when the second driving shaft moves vertically downwards, the gas in the second chamber 43 enters the inner tube liquid outlet cavity 14, so that the pressure in the inner tube liquid outlet cavity 14 is increased.
When the pressure in the outer pipe liquid outlet cavity 13 is reduced, the outer pipe liquid outlet cavity 13 can suck the rainwater at the bottom of the outer wallboard cavity 61 into the outer pipe liquid outlet cavity 13, so that the rainwater in the outer wallboard cavity 61 is quickly discharged. And, the pressure in the outer pipe effluent chamber 13 is reduced and the pressure in the inner pipe effluent chamber 14 is increased, which creates an air pressure of inner pipe inlet end → outer pipe inlet end, further accelerating the drainage of rainwater deposited at the bottom of the outer wall panel cavity 61.
After the rain stops, the motor is started again, the motor enables the pressure in the outer pipe liquid outlet cavity 13 to be reduced again and the pressure in the inner pipe liquid outlet cavity 14 to be increased again through the rotating shaft, the first cam 51, the second cam 52, the first driving shaft, the second driving shaft and the like, the air pressure formed by the inner pipe water inlet end → the outer pipe water inlet end helps to blow dry the rainwater at the bottom of the outer wall hanging panel cavity 61, the wall hanging panel is effectively prevented from being in a humid environment for a long time, and therefore the structural safety of the assembly type building outer wall hanging panel 6 is guaranteed.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (5)
1. The assembled drainage structure for the building external wall panel is characterized by comprising a liquid outlet box, an inner tube and an outer tube sleeved outside the inner tube, wherein a drain hole is formed in the bottom of the liquid outlet box;
the two ends of the inner pipe are respectively a water inlet end of the inner pipe and a water outlet end of the inner pipe, the two ends of the outer pipe are respectively a water inlet end of the outer pipe and a water outlet end of the outer pipe, the water inlet end of the inner pipe extends out from the water inlet end of the outer pipe, the water outlet end of the inner pipe extends out from the water outlet end of the outer pipe, the water inlet end of the inner pipe and the water inlet end of the outer pipe both extend into the cavity of the external wall panel, the side wall of the outer pipe extending into the cavity of the external wall panel is provided with water leakage holes, the water outlet end; the device also comprises a power part which can simultaneously reduce the pressure in the liquid outlet cavity of the outer pipe and increase the pressure in the liquid outlet cavity of the inner pipe.
2. The assembly type building external wallboard drainage structure according to claim 1, further comprising an air inlet box body, wherein a first partition plate and a second partition plate are horizontally arranged and vertically arranged in the air inlet box body, the second partition plate is located below the first partition plate, a power chamber is arranged above the first partition plate, the power member is arranged in the power chamber, a first chamber and a second chamber are respectively arranged below the first partition plate, a first driving shaft is vertically arranged in the first chamber, a first sliding block is fixedly connected to the bottom of the first driving shaft, the first sliding block is hermetically and vertically connected in the first chamber in a sliding manner, and a first tension spring capable of driving the first sliding block to vertically slide upwards is arranged in the first chamber; a first air inlet pipe communicated with the outer pipe liquid outlet cavity and a first air outlet pipe communicated with the outside are arranged in the first cavity; a second driving shaft which is vertically arranged is arranged in the second chamber, a second sliding block is fixedly connected to the bottom of the second driving shaft, the second sliding block is hermetically and vertically connected into the second chamber in a sliding manner, and a second tension spring capable of driving the second sliding block to vertically slide upwards is arranged in the second chamber; a second air inlet pipe and a second air outlet pipe are arranged in the second cavity, and a second air outlet pipe communicated with the inner pipe liquid outlet cavity and a second air inlet pipe communicated with the outside are arranged in the second cavity; the first air inlet pipe, the first air outlet pipe, the second air outlet pipe and the second air inlet pipe are internally provided with one-way valves.
3. The assembly type building external wallboard drainage structure of claim 2, wherein the power member comprises a motor and a rotating shaft arranged horizontally, an output shaft of the motor is fixedly connected with the rotating shaft, a first cam capable of driving the first driving shaft to move vertically downwards and a second cam capable of driving the second driving shaft to move vertically downwards are arranged on the rotating shaft, and a driving end of the first cam and a driving end of the second cam are respectively arranged at two sides of an axis of the rotating shaft.
4. The assembly type building exterior wallboard drainage structure of claim 3, wherein the water inlet end of the inner pipe is opened upwards.
5. The assembly type building external wall board drainage structure according to claim 4, wherein the vertical separation plate is arranged at the center line of the liquid outlet box, the drain holes are arranged at two sides of the vertical separation plate, and the horizontal distance between the drain holes and the vertical separation plate is 0.3-0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642229.XA CN109680781B (en) | 2018-12-29 | 2018-12-29 | Assembled building external wall panel drainage structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642229.XA CN109680781B (en) | 2018-12-29 | 2018-12-29 | Assembled building external wall panel drainage structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109680781A CN109680781A (en) | 2019-04-26 |
| CN109680781B true CN109680781B (en) | 2020-08-07 |
Family
ID=66191404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811642229.XA Active CN109680781B (en) | 2018-12-29 | 2018-12-29 | Assembled building external wall panel drainage structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109680781B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042937B (en) * | 2019-05-17 | 2023-11-21 | 河南太岳建筑工程有限公司 | Drainage structure of externally hung wallboard of assembled building |
| CN110439081B (en) * | 2019-08-14 | 2020-11-17 | 安徽企路石工程技术开发有限公司 | Alternating negative pressure suction device and drainage system |
| CN111980183A (en) * | 2020-07-24 | 2020-11-24 | 王小艳 | Assembled building externally-hung wallboard drainage device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI93667C (en) * | 1993-09-21 | 1995-05-10 | Evac Ab | Vacuum Drainage Device |
| CN102953468A (en) * | 2011-08-18 | 2013-03-06 | 上海美特幕墙有限公司 | Glass curtain wall with equal-pressure water drainage system |
| CN204370673U (en) * | 2015-01-04 | 2015-06-03 | 金陵科技学院 | A kind of building wall board |
| CN207714856U (en) * | 2017-11-17 | 2018-08-10 | 浙江展衢重工科技有限公司 | A kind of garage parking automobile anti-flooding apparatus |
| CN108488443B (en) * | 2018-05-28 | 2024-01-23 | 万若（北京）环境工程技术有限公司 | Liquid level pneumatic control valve, corresponding negative pressure drainage system and negative pressure drainage control method |
| CN109025052B (en) * | 2018-07-16 | 2020-06-02 | 重庆工程职业技术学院 | Assembly type building external wall panel drainage structure |
-
2018
- 2018-12-29 CN CN201811642229.XA patent/CN109680781B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109680781A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109680781B (en) | Assembled building external wall panel drainage structures | |
| CN110042937B (en) | Drainage structure of externally hung wallboard of assembled building | |
| CN109025052B (en) | Assembly type building external wall panel drainage structure | |
| CN210105003U (en) | Assembled building external wall panel drainage structures | |
| CN106120992B (en) | A kind of intelligent closestool of quick flush | |
| CN201443130U (en) | Toilet bowl | |
| CN112796824B (en) | Slag discharging and water draining device for gas pipeline | |
| CN206722008U (en) | A kind of driving tank for excrement pan of gasbag-type air pressure | |
| CN213508979U (en) | Assembled building drainage structures | |
| CN212360203U (en) | Vertical screw drive water suction pump device | |
| CN210216607U (en) | Laboratory wastewater collecting and discharging device | |
| CN212001512U (en) | Multifunctional environment-friendly floor drain | |
| CN207512757U (en) | Foundation pit supporting construction | |
| CN113153189A (en) | Vacuum degassing device for drilling fluid | |
| CN101638910B (en) | Vacuum suction and discharge closestool with tap water pressure self drive type hydraulic cylinder | |
| CN112178232A (en) | Vacuum blowoff valve | |
| CN115853747B (en) | Steam-water separator of dechlorination vacuum pump unit | |
| CN2746015Y (en) | Contact sensing type pressure flushing device | |
| CN205742430U (en) | Integration is opened by force and is directly closed stepless quantity-regulating flashing valve | |
| CN110331825A (en) | A kind of energy-saving type building construction | |
| CN208235661U (en) | A kind of sustainable water closet of water supply and drainage | |
| CN111974152B (en) | Separator for improving sulfuric acid color formation | |
| CN104452922B (en) | A kind of water-saving water-inflow and drain valve for water closet | |
| CN203230593U (en) | Self-suction type centrifugal pump | |
| CN214942094U (en) | Wayside pavilion processing is handled with paraffin emulsion spraying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |