CN219858616U - Self-resistance type funnel device - Google Patents
Self-resistance type funnel device Download PDFInfo
- Publication number
- CN219858616U CN219858616U CN202320176908.2U CN202320176908U CN219858616U CN 219858616 U CN219858616 U CN 219858616U CN 202320176908 U CN202320176908 U CN 202320176908U CN 219858616 U CN219858616 U CN 219858616U
- Authority
- CN
- China
- Prior art keywords
- funnel
- self
- sealing
- water
- water outlet
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000008719 thickening Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 abstract description 14
- 239000013535 sea water Substances 0.000 abstract description 13
- 238000013461 design Methods 0.000 abstract description 7
- 238000007599 discharging Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Barrages (AREA)
Abstract
The utility model discloses a self-resistance type funnel device, which relates to the technical field of ship funnels and solves the problems that a common traditional funnel cannot be closed in time according to the descending of a water level and is easy to damage an impeller of a pump because the structure is in a normal-open state, and the self-resistance type funnel device is technically characterized by comprising: a funnel body having a cavity capable of containing the discharged water; a guide device; a floating device which is connected to the guiding device in a sliding way and can be lifted along with the lifting of the discharged water; the sealing device is arranged at one end of the floating device, can rise and fall along with the rise and fall of the discharged water and can descend to seal the water outlet, and the scheme provides a self-resistance type funnel concrete structure capable of timely closing the water outlet according to the falling of the water level, and the scheme can not damage the impeller of the pump set or reduce the efficiency of the pump set; due to the fact that the scheme is simple in structure, the design requirements of the seawater sampling system are met, and meanwhile the arrangement of a pump set and a pipe system can be reduced.
Description
Technical Field
The utility model relates to the technical field of ship funnels, in particular to a self-resistance funnel device.
Background
The design of traditional funnel mainly comprises a conical tube body, an outlet flange, a cover plate and the like. The large end of the conical tube of the funnel body faces upwards to serve as the most purpose of containing the discharged water, and the small end of the conical tube body faces downwards and is welded with the tail end tube connecting flange. The traditional funnel only plays a role of containing and discharging water and connecting a discharging pipeline, and is only suitable for the pipeline design of discharging from a high place to a low place by gravity.
In order to facilitate scientific research sampling analysis, a seawater sampling system in a marine scientific research laboratory is generally started when going out of port and needs to work continuously for a long time, so that the auxiliary discharge of a pump set is generally relied on, and a discharge pipeline is connected to a suction port of the pump set so as to recover or directly discharge the discharged water in the running process of the system.
The traditional funnel is in a normally-on state, so that the traditional funnel cannot be closed in time according to the falling of the water level, and therefore the traditional funnel cannot block the atmosphere, when a discharge pipeline is blocked or a suction port of a pump set is closed, the pump set directly pumps air in the atmosphere due to the falling of the water level, so that the working efficiency of the pump set is greatly reduced, cavitation is easily generated at an impeller of the pump set due to the fact that water is not pumped, the impeller of the pump is damaged, and the whole seawater sampling system is paralyzed in severe cases.
Disclosure of Invention
The utility model aims to provide a self-resistance type funnel device, which provides a specific structure of a self-resistance type funnel capable of closing a water outlet in time according to water level drop, and the self-resistance type funnel device can not damage an impeller of a pump set or reduce efficiency of the pump set; due to the fact that the scheme is simple in structure, the design requirements of the seawater sampling system are met, and meanwhile the arrangement of a pump set and a pipe system can be reduced.
The technical aim of the utility model is realized by the following technical scheme: a self-blocking funnel device, comprising:
the funnel body is provided with a containing cavity capable of containing discharged water, and the containing cavity is provided with a water inlet and a water outlet;
the guide device is arranged in the containing cavity and is provided with a flow channel for the flow of the discharged water;
a floating device which is connected to the guiding device in a sliding way and can be lifted along with the lifting of the discharged water;
and the sealing device is arranged at one end of the floating device, which is close to the water outlet, and can be lifted along with the lifting of the discharged water and can be lowered to seal the water outlet.
When the floating device descends along with the water discharged from the cavity, the sealing device descends along with the floating device until the sealing device can seal the water outlet under the action of gravity; when the floating device rises along with the discharged water in the containing cavity, the sealing device rises along with the floating device, at the moment, a space is reserved between the sealing device and the water outlet, and the water outlet can convey the discharged water to the impeller of the pump set;
therefore, the scheme provides a self-resistance type funnel concrete structure capable of timely closing a water outlet according to water level descending, compared with a discharging mode of a traditional funnel, the scheme can be used for designing a discharging pipeline system which needs pump set auxiliary discharging, the scheme can directly connect discharged water back to a suction port end of a scientific laboratory seawater sampling system, the scientific laboratory seawater sampling system can operate and simultaneously discharge the discharged water, meanwhile, the impeller of the pump set cannot be damaged or the efficiency of the pump set is reduced, and secondly, due to the simple structure of the scheme, the pump set and the tube system can be reduced while the design requirement of the seawater sampling system is met.
In some embodiments, the guide device comprises:
the upper guide frame is detachably arranged on the containing cavity, is provided with an upper flow hole for the flow of the discharged water, and is provided with an upper sliding channel for the sliding of the floating device;
the lower guide frame is detachably arranged on the containing cavity, is provided with a lower flow hole for the flow of the discharged water, and is provided with a lower sliding channel for the sliding of the floating device;
the floating device is slidably connected to the upper sliding channel and the lower sliding channel.
From this, go up the leading truck and constitute by four pipes with lower leading truck, this scheme provides a guider's concrete structure, and it can enough satisfy the normal liquid level of discharging water in holding the intracavity and go up and down, and it can also satisfy the guide effect to floating device.
In some embodiments, the accommodating cavity is provided with an upper mounting part, and the upper guide frame is detachably arranged on the upper mounting part;
the holding cavity is provided with a lower mounting part, and the lower guide frame is detachably arranged on the lower mounting part.
From this, this scheme provides the concrete setting mode of last leading truck and lower leading truck in holding the intracavity, and it has simple to operate's characteristics.
In some embodiments, the floating device comprises:
a slide rod which slides on the guide device;
the pontoon is arranged on the sliding rod, has buoyancy and can rise and fall along with the rise and fall of the discharged water;
the sealing device is arranged at one end of the sliding rod close to the water outlet.
Thus, the present solution provides a specific structural configuration of the floating device.
In some embodiments, the sealing device is removably disposed at an end of the float device.
Therefore, the sealing device is convenient to install and maintain, and secondly, the sealing device with different sizes can be replaced to adapt to water outlets with different sizes.
In some embodiments, the sealing device comprises:
a sealing part capable of sealing the water outlet;
and the locking part penetrates through the sealing part and is detachably arranged at the end part of the floating device in a penetrating way.
Thus, the present solution provides a specific structural configuration of the sealing device.
In some embodiments, the end of the floating device is provided with a thickening through which the locking portion can pass.
Therefore, the thickened part can enable the penetration of the locking part on the sliding rod to be more stable, so that the sealing effect of the sealing device on the water outlet is improved.
In some embodiments, the sealing portion is provided with a mounting groove, and the sealing device further includes:
a first flat gasket disposed in the mounting groove;
a second flat gasket arranged at the joint of the sealing part and the floating device;
the locking part sequentially passes through the first flat gasket, the sealing part, the second flat gasket and the floating device and is positioned in the mounting groove.
Thereby, the first flat washer and the second washer serve to enhance the securing effect of the locking portion to secure the sealing portion to the slide bar.
In some embodiments, the method further comprises:
one end of the extension pipe is communicated with the funnel body, the other end of the extension pipe is provided with a connecting part, the water outlet is arranged on the connecting part, and the sealing device can be abutted on the connecting part and seal the water outlet.
Thereby, the connection is a connection flange, which is capable of communicating with the pump stack.
In some embodiments, the method further comprises:
the mounting block is arranged on the funnel body,
the mounting cover plate is arranged on the water inlet;
the movable cover plate is rotatably arranged on the mounting cover plate and can be locked on the mounting block after being rotated to cover the water inlet.
Therefore, the scheme provides a specific structure capable of sealing the water inlet, so that foreign objects are prevented from falling into the containing cavity easily.
In summary, the scheme provides a specific structure of the self-blocking funnel capable of closing the water outlet in time according to the water level drop, and the scheme does not damage the impeller of the pump set or reduce the efficiency of the pump set; due to the fact that the scheme is simple in structure, the design requirements of the seawater sampling system are met, and meanwhile the arrangement of a pump set and a pipe system can be reduced.
Drawings
FIG. 1 is a schematic view of a semi-sectional structure of the present embodiment;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
fig. 4 is an enlarged view at C in fig. 1;
fig. 5 is an enlarged view of D in fig. 1;
fig. 6 is a top view of the present embodiment;
FIG. 7 is a schematic view of the semi-section structure at E-E in FIG. 1;
fig. 8 is a schematic view of the semi-sectional structure at F-F in fig. 1.
Reference numerals: 1. a funnel body; 10. a cavity; 10a, a water inlet; 10b, a water outlet; 101. an extension tube; 102. a connection part; 2. a guide device; 21. an upper guide frame; 210. an upper mounting portion; 211. an upper flow hole; 212. an upper sliding channel; 22. a lower guide frame; 220. a lower mounting portion; 221. a downflow hole; 222. a lower sliding channel; 3. a floating device; 31. a slide bar; 310. a thickened portion; 32. a pontoon; 4. a sealing device; 41. a sealing part; 410. a mounting groove; 42. a locking part; 43. a first flat gasket; 44. a second flat gasket; 51. a mounting block; 52. installing a cover plate; 53. a movable cover plate.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
Examples:
a self-blocking funnel device which can be installed not only in a seawater sampling system similar to a scientific laboratory, but also on a ship;
specifically, as shown in fig. 1 to 8, a self-blocking funnel device includes: funnel body 1, guider 2, floating device 3, sealing device 4 specifically as follows:
a funnel body 1 having a vessel 10 capable of containing discharged water, the vessel 10 having a water inlet 10a and a water outlet 10b; preferably, the present embodiment further includes: the extension pipe 101 has one end connected to the funnel body 1 and the other end provided with a connection part 102, the water outlet 10b is provided on the connection part 102, and the sealing device 4 can abut against the connection part 102 and seal the water outlet 10b. Thus, the connecting portion 102 is a connecting flange, which can be communicated with the pump group, and the funnel body 1, the guiding device 2 and the floating device 3 are all made of steel materials.
The guiding device 2 is arranged in the containing cavity 10 and is provided with a flow channel for the flow of the discharged water;
wherein the guiding device 2 comprises: the upper guide frame 21 and the lower guide frame 22 are specifically as follows:
as shown in fig. 3, specifically, the accommodating chamber 10 is provided with an upper mounting portion 210, and the upper guide frame 21 is detachably provided on the upper mounting portion 210 by a bolt pair;
as shown in fig. 7, the upper guide frame 21 is detachably disposed on the accommodating cavity 10, and is provided with an upper circulation hole 211 for allowing the discharged water to circulate, and is provided with an upper sliding channel 212 for sliding the floating device 3;
as shown in fig. 8, the lower guide frame 22 is detachably disposed on the extension pipe 101 of the accommodating cavity 10, and is provided with a lower circulation hole 221 for allowing the drainage water to circulate, and is provided with a lower sliding channel 222 for allowing the floating device 3 to slide; specifically, the extension pipe 101 in the cavity 10 is provided with a lower mounting portion 220, and the lower guide frame 22 is detachably disposed on the lower mounting portion 220 through a bolt pair.
The upper and lower flow holes 211 and 221 are constructed as flow channels, and the floating device 3 is slidably coupled to the upper and lower sliding channels 212 and 222.
Specifically, the upper guide frame 21 and the lower guide frame 22 are formed by splicing four pipes, and the scheme provides a specific structural structure of the guide device 2, which can not only meet the normal lifting of the liquid level of the discharged water in the containing cavity 10, but also meet the guide effect on the floating device 3. The scheme provides a specific arrangement mode of the upper guide frame 21 and the lower guide frame 22 in the accommodating cavity 10, and has the characteristic of convenient installation. The pontoon 32 is controlled to be always at the center of the hopper body 1 by the upper guide frame 21 and the lower guide frame 22.
A floating device 3 slidably connected to the guide device 2, and capable of being lifted and lowered along with the lifting and lowering of the discharged water;
wherein the floating device 3 comprises: the sliding rod 31 and the pontoon 32 are as follows:
a slide rod 31 that slides on the guide 2;
a float 32 provided on the slide rod 31, having buoyancy and capable of lifting and lowering in accordance with the lifting and lowering of the discharged water; the sealing device 4 is arranged at one end of the sliding rod 31 close to the water outlet 10b. The pontoon 32 itself has a closed cavity to enable buoyancy. Thus, the present solution provides a specific structural configuration of the floating device 3.
And a sealing device 4 provided at one end of the floating device 3 near the water outlet 10b, which can be lifted up and down along with the lifting of the discharged water and can be lowered to seal the water outlet 10b. Preferably, the sealing means 4 are removably arranged at the end of the float means 3. Thereby, by means of the mounting and dismounting of the sealing means 4 for easy mounting and subsequent maintenance of the sealing means 4, it is furthermore possible to adapt different sized water outlets 10b by exchanging different sized sealing means 4.
Specifically, the sealing device 4 includes: the seal portion 41 and the lock portion 42 are specifically as follows:
a sealing portion 41 capable of sealing the water outlet 10b; preferably, the sealing portion 41 is a rubber seal ring.
A locking portion 42 penetrating the sealing portion 41 and detachably penetrating an end portion of the slide rod 31 in the floating device 3. Thus, the present solution provides a specific structural configuration of the sealing device 4. Preferably, the end of the sliding rod 31 in the floating device 3 is provided with a thickened portion 310 through which the locking portion 42 can be threaded. The thickened portion 310 thus makes it possible to more firmly insert the locking portion 42 on the sliding rod 31, so as to improve the sealing action of the sealing device 4 on the water outlet 10b.
Specifically, as shown in fig. 5, the sealing portion 41 is provided with a mounting groove 410, and the sealing device 4 further includes:
a first flat gasket 43 disposed in the mounting groove 410;
a second flat gasket 44 provided at the junction of the seal portion 41 and the slide rod 31 in the floating device 3;
in this embodiment, the locking portion 42 is a screw, the thickened portion 310 is provided with an internal threaded hole, and the locking portion 42 sequentially passes through the first flat gasket 43, the sealing portion 41, the second flat gasket 44, and the sliding rod 31 in the floating device 3 and is located in the mounting groove 410, and at this time, the locking portion 42 is screwed into the internal threaded hole of the thickened portion 310. Thus, the first flat washer 43 and the second washer serve to enhance the securing effect of the locking portion 42 to fix the sealing portion 41 to the slide bar 31. Preferably, the first flat gasket 43 and the second flat gasket 44 are both made of stainless steel.
Preferably, as shown in fig. 1 and 6, the present embodiment further includes: the mounting block 51, the mounting cover plate 52 and the movable cover plate 53 are as follows:
a mounting block 51 provided on the funnel body 1,
a mounting cover plate 52 provided on the water inlet 10 a;
the movable cover plate 53 is rotatably provided on the mounting cover plate 52, and is rotatable until the water inlet 10a is covered and locked on the mounting block 51.
Specifically, the movable cover 53 is provided on the mounting cover 52 in a hinged manner. The movable cover 53 is locked to the mounting block 51 by a bolt pair. The mounting cover plate 52 and the movable cover plate 53 can be spliced to form a circular shape matching the water inlet 10 a. Therefore, the scheme provides a specific structure capable of covering the water inlet 10a so as to prevent foreign objects from easily falling into the containing cavity 10.
Principle of operation
When the floating device 3 descends along with the water discharged from the cavity 10, the sealing device 4 descends along with the floating device 3 until the sealing device 4 can seal the water outlet 10b under the action of self gravity; when the floating device 3 ascends along with the discharged water in the containing cavity 10, the sealing device 4 ascends along with the floating device 3, at the moment, a space is reserved between the sealing device 4 and the water outlet 10b, and the water outlet 10b can convey the discharged water to the impeller of the pump set.
Advantageous effects
Considering that conventional funnels can only be placed where gravity is relied upon to drain, conventional funnels can only drain nearby to a bilge well or bilge tank, thereby causing two problems: the first problem is that the discharged water cannot be recycled; the second problem is that for scientific laboratory seawater sampling systems that require long-term operation, long-term in-situ discharge is likely to cause frequent water level elevation alarms for the bilge well, in which case special sewage pumps and sewage piping are often required for the safety of the vessel, since if no special sewage pumps and sewage piping are present, frequent alarms for the bilge well will interfere with the normal operation of the vessel system.
Therefore, the scheme provides a self-resistance type funnel concrete structure capable of timely closing the water outlet 10b according to water level drop, compared with a discharging mode of a traditional funnel, the scheme can be used for designing a discharging pipeline system which needs pump set auxiliary discharging, the scheme can directly connect discharged water back to the suction port end of a scientific laboratory seawater sampling system, the discharged water is discharged when the scientific laboratory seawater sampling system operates, meanwhile, the impeller of the pump set cannot be damaged or the efficiency of the pump set is reduced, and secondly, due to the simple structure of the scheme, the pump set and the corresponding pipeline system can be reduced while the design requirement of the seawater sampling system is met.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.
Claims (10)
1. A self-blocking funnel device, comprising:
the funnel comprises a funnel body, a funnel cover and a funnel cover, wherein the funnel body is provided with a containing cavity capable of containing discharged water, and the containing cavity is provided with a water inlet and a water outlet;
the guide device is arranged in the containing cavity and is provided with a flow channel for the flow of the discharged water;
a floating device which is connected to the guiding device in a sliding manner and can be lifted along with the lifting of the discharged water;
and the sealing device is arranged at one end of the floating device, which is close to the water outlet, and can be lifted along with the lifting of the discharged water and can be lowered to seal the water outlet.
2. A self-blocking funnel device according to claim 1, wherein the guiding means comprises:
the upper guide frame is detachably arranged on the accommodating cavity, is provided with an upper flow hole for the flow of the discharged water, and is provided with an upper sliding channel for the sliding of the floating device;
the lower guide frame is detachably arranged on the accommodating cavity, is provided with a lower flow hole for the flow of the discharged water, and is provided with a lower sliding channel for the sliding of the floating device;
the floating device is slidably connected to the upper sliding channel and the lower sliding channel.
3. The self-blocking funnel device according to claim 2, wherein the cavity is provided with an upper mounting portion, and the upper guide frame is detachably arranged on the upper mounting portion;
the accommodating cavity is provided with a lower mounting part, and the lower guide frame is detachably arranged on the lower mounting part.
4. A self-blocking funnel device according to claim 1, wherein the floating means comprises:
a slide bar that slides on the guide;
a float provided on the slide rod, having buoyancy and capable of lifting along with the lifting of the discharged water;
the sealing device is arranged at one end of the sliding rod, which is close to the water outlet.
5. The self-contained funnel device of claim 1, wherein the sealing means is removably disposed at an end of the float means.
6. The self-contained funnel device of claim 5, wherein the sealing means comprises:
a sealing part capable of sealing the water outlet;
and the locking part penetrates through the sealing part and is detachably arranged at the end part of the floating device in a penetrating way.
7. The self-blocking funnel device according to claim 6, wherein the end of the floating means is provided with a thickening through which the locking portion is provided.
8. The self-contained funnel assembly of claim 6, wherein the sealing portion defines a mounting recess, the sealing assembly further comprising:
a first flat gasket disposed in the mounting groove;
a second flat gasket provided at a junction between the sealing portion and the floating device;
the locking part sequentially passes through the first flat gasket, the sealing part, the second flat gasket, the floating device and is positioned in the mounting groove.
9. The self-blocking funnel device of claim 1, further comprising:
one end of the extension pipe is communicated with the funnel body, the other end of the extension pipe is provided with a connecting part, the water outlet is arranged on the connecting part, and the sealing device can be abutted to the connecting part and seal the water outlet.
10. The self-blocking funnel device of claim 1, further comprising:
the mounting block is arranged on the funnel body,
the mounting cover plate is arranged on the water inlet;
the movable cover plate is rotatably arranged on the mounting cover plate and can be locked on the mounting block after being rotated to cover the water inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320176908.2U CN219858616U (en) | 2023-02-06 | 2023-02-06 | Self-resistance type funnel device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320176908.2U CN219858616U (en) | 2023-02-06 | 2023-02-06 | Self-resistance type funnel device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219858616U true CN219858616U (en) | 2023-10-20 |
Family
ID=88319212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320176908.2U Active CN219858616U (en) | 2023-02-06 | 2023-02-06 | Self-resistance type funnel device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219858616U (en) |
-
2023
- 2023-02-06 CN CN202320176908.2U patent/CN219858616U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114525769B (en) | Water surface floating oil extraction device for municipal water conservancy project and application method of water surface floating oil extraction device | |
| CN103062453A (en) | Vacuum anti-siphon backflow preventing valve | |
| CN219858616U (en) | Self-resistance type funnel device | |
| CN209852554U (en) | Ship domestic sewage onshore suction device | |
| CN201177579Y (en) | Automatic control type pumping filter | |
| CN101249340B (en) | Self control type pumping filter | |
| CN212621690U (en) | Secondary water supply quality of water automatic extraction element | |
| CN110723252B (en) | Quick exhaust structure of ballast water tank at bottom of ship | |
| CN220076643U (en) | Temporary deck drainage device suitable for ship building stage | |
| CN211898560U (en) | Integrated pump well equipment | |
| CN109353450B (en) | Ship emergency drainage device and method | |
| CN2342862Y (en) | Vertical automatic oil-water separator | |
| CN210370786U (en) | Gas drainage time-delay pneumatic water drainage device | |
| WO2023197450A1 (en) | Stable submersible pump control switch | |
| CN220768252U (en) | Novel manhole water intaking structure and technical water supply system for pump station | |
| CN113548329B (en) | Methanol fuel containment system and ship | |
| JPH0672594B2 (en) | Pumping equipment for seawater, etc. | |
| CN210887140U (en) | Water drain gate with automatic water drain filter | |
| CN210037780U (en) | Pump station installation pH detection device | |
| CN211259821U (en) | Shunt tube | |
| CN213448814U (en) | External closed sewage lifting device with back flush | |
| CN216687611U (en) | Membrane frame structure of MBR membrane module | |
| CN212001210U (en) | Novel foundation pit drainage device | |
| CN216112436U (en) | Automatic air exhaust valve | |
| CN210885498U (en) | Anti-siphon device for water outlet of membrane bioreactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |