CN113048259A - Ball valve with small friction force - Google Patents
Ball valve with small friction force Download PDFInfo
- Publication number
- CN113048259A CN113048259A CN202110373270.7A CN202110373270A CN113048259A CN 113048259 A CN113048259 A CN 113048259A CN 202110373270 A CN202110373270 A CN 202110373270A CN 113048259 A CN113048259 A CN 113048259A
- Authority
- CN
- China
- Prior art keywords
- fixed
- ball valve
- shaft
- bearing
- low friction
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a ball valve with small friction force, which comprises a main body, a wrench, a transmission shaft and a ball body, wherein sealing structures are fixed on two sides inside the main body, fixing grooves are formed in the bottom end inside the ball body, a bearing is fixed at the bottom end inside the main body, a protection shaft is movably connected inside the bearing, the wrench is installed outside the top end of the transmission shaft, and a dismounting structure is arranged at the top end of the wrench. The protective structure is arranged to reduce the friction force during switching, when the ball body is used, larger friction force can be generated between the ball body and the main body, the protective structure can be optimized, when the ball body is switched, the ball body rotates, the protective shaft is clamped and fixed between the fixed groove and the ball body, the ball body rotates to drive the protective shaft to rotate, the bearing supports the rotation of the protective shaft, the friction force is smaller when the ball body rotates, and therefore the use convenience is improved.
Description
Technical Field
The invention relates to the technical field of ball valves, in particular to a ball valve with small friction force.
Background
The ball valve is a valve which can flexibly control the confluence, diversion and flow direction switching of media in a pipeline and control the on-off of the pipeline, has the advantages of good sealing performance, wear resistance, long service life and the like, is mostly used for controlling water flow or fuel gas in life, but is difficult to pull and poor in use experience in the traditional ball valve, so that a special ball valve with small friction force can be used;
however, the friction force of the existing ball valve in the market is large and the use is laborious, so a ball valve with small friction force is developed to solve the problems.
Disclosure of Invention
The invention aims to provide a ball valve with small friction force, which aims to solve the problems of large friction force and labor-consuming use in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a ball valve that frictional force is little, includes main part, spanner, transmission shaft and spheroid, the inside both sides of main part all are fixed with seal structure, the inside swing joint of main part has the spheroid, and spheroidal top swing joint has the transmission shaft, spheroidal bottom swing joint has protective structure, protective structure includes fixed slot, protection axle and bearing, the fixed slot sets up in the inside bottom of spheroid, the bearing is fixed in the inside bottom of main part, the inside swing joint of bearing has the protection axle, the externally mounted on transmission shaft top has the spanner, the top of spanner is provided with dismantles the structure.
Preferably, a clamping structure is formed between the fixing groove and the protection shaft, and the outer diameter of the protection shaft is smaller than the inner diameter of the fixing groove.
Preferably, the bottom end of the protection shaft in the main body through the bearing forms a rotating structure, and the outer diameter of the protection shaft is smaller than the inner diameter of the bearing.
Preferably, the disassembly structure comprises a fixed group, a clamping block and a clamping groove, the fixed group is fixed at the top end of the wrench, the clamping block is fixed at two sides of the bottom end of the wrench, and the clamping groove is arranged at two sides of the bottom end inside the transmission shaft.
Preferably, the number of the clamping blocks is two, and the clamping blocks are symmetrically distributed around the vertical center line of the main body.
Preferably, the outer diameter of the clamping block is smaller than the inner diameter of the clamping groove, and a clamping structure is formed between the clamping block and the clamping groove.
Preferably, the sealing structure comprises a sealing sleeve, a support and anti-skidding convex points, the support is fixed on two sides of the inner portion of the main body, the sealing sleeve is fixed inside the support, and the anti-skidding convex points are fixed on the top end of the inner portion of the sealing sleeve.
Preferably, the number of the sealing sleeves is two, and the inner diameter of each sealing sleeve is smaller than that of the support.
Preferably, the anti-skid salient points are arranged in a plurality and are arranged at equal intervals at the top end inside the sealing sleeve.
Compared with the prior art, the invention has the beneficial effects that: the ball valve with small friction force not only reduces the friction force during switching and improves the use convenience, but also facilitates the disassembly and assembly of a wrench, improves the use safety and the connection sealing enhancement, and improves the use stability;
(1) the protective structure is arranged, so that friction force during switching is reduced, when the switching ball is used, larger friction force can be generated between the ball body and the main body, the protective structure can be optimized, when the switching ball is switched, the ball body rotates, the protective shaft is clamped and fixed between the fixed groove and the ball body, the ball body rotates to drive the protective shaft to rotate, the bearing supports the rotation of the protective shaft, so that the friction force is smaller when the ball body rotates, and the use convenience is improved;
(2) the disassembly structure is arranged to facilitate disassembly and assembly of the wrench, when the ball valve is used, the disassembly structure is arranged to prevent a malicious switch from being arranged, the wrench and the transmission shaft are fixed by clamping between the clamping block and the clamping groove, the transmission shaft can be driven to rotate to drive the ball body to switch on and off when the wrench is wrenched, the fixing group is opened after the switching is completed, the wrench and the transmission shaft are fixed, then the wrench is taken up, the transmission shaft is not easy to rotate, and the ball valve is prevented from being maliciously switched on and off, so that the use safety is improved;
(3) realized strengthening the sealed of connecting through being provided with seal structure, need be connected the inside and the pipeline of main part both sides when using, set up seal structure for making the junction can not appear leaking, connect the inside that the back support inserted the connecting tube, the inside seal cover of support seals the inner wall at the pipeline mouth, the non-slip bump can prevent to slide to the frictional force reinforcing of connecting and drop to this realizes more stable convenient use, thereby improved the stability of using.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic front sectional view of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is an enlarged partial cross-sectional view taken at A in FIG. 2 according to the present invention;
FIG. 5 is a front view of a partial cross-sectional structure of the protective structure of the present invention;
fig. 6 is a front view partial sectional structural schematic view of the sealing structure of the present invention.
In the figure: 1. a main body; 2. disassembling the structure; 201. a fixed group; 202. a clamping block; 203. a card slot; 3. a wrench; 4. a sealing structure; 401. sealing sleeves; 402. a support; 403. anti-skid bumps; 5. a drive shaft; 6. a sphere; 7. a protective structure; 701. fixing grooves; 702. a guard shaft; 703. and a bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an embodiment of the present invention is shown: a ball valve with small friction force comprises a main body 1, a wrench 3, a transmission shaft 5 and a ball body 6, wherein sealing structures 4 are fixed on two sides of the interior of the main body 1, the ball body 6 is movably connected to the interior of the main body 1, the top end of the ball body 6 is movably connected with the transmission shaft 5, the bottom end of the ball body 6 is movably connected with a protection structure 7, the wrench 3 is installed on the outer portion of the top end of the transmission shaft 5, and a dismounting structure 2 is arranged at the top end of the wrench 3;
the protection structure 7 comprises a fixing groove 701, a protection shaft 702 and a bearing 703, the fixing groove 701 is arranged at the bottom end inside the ball 6, the bearing 703 is fixed at the bottom end inside the main body 1, the protection shaft 702 is movably connected inside the bearing 703, a clamping structure is formed between the fixing groove 701 and the protection shaft 702, the outer diameter of the protection shaft 702 is smaller than the inner diameter of the fixing groove 701, the protection shaft 702 forms a rotating structure at the bottom end inside the main body 1 through the bearing 703, and the outer diameter of the protection shaft 702 is smaller than the inner diameter of the bearing 703;
specifically, as shown in fig. 2 and 5, when the structure is used, firstly, when the structure is used, a large friction force is generated between the ball 6 and the main body 1, the protective structure 7 is arranged to optimize the structure, when the structure is switched, the ball 6 rotates, the protective shaft 702 is clamped and fixed with the ball 6 through the fixing groove 701, the ball 6 rotates to drive the protective shaft 702 to rotate, and the bearing 703 supports the rotation of the protective shaft 702, so that the friction force is smaller when the ball 6 rotates;
the disassembly structure 2 comprises a fixing group 201, two clamping blocks 202 and two clamping grooves 203, the fixing group 201 is fixed at the top end of the wrench 3, the clamping blocks 202 are fixed at two sides of the bottom end of the wrench 3, the clamping grooves 203 are arranged at two sides of the bottom end inside the transmission shaft 5, the clamping blocks 202 are symmetrically distributed around the vertical center line of the main body 1, the outer diameter of each clamping block 202 is smaller than the inner diameter of each clamping groove 203, and a clamping structure is formed between each clamping block 202 and each clamping groove 203;
specifically, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, when the structure is used, firstly, in order to prevent a person from maliciously switching the dismounting structure 2, the clamping block 202 and the clamping groove 203 are clamped to fix the wrench 3 and the transmission shaft 5, so that the wrench 3 can drive the transmission shaft 5 to rotate to drive the ball body 6 to switch on and off when being wrenched, after the switching is completed, the fixing group 201 is opened to release the fixing between the wrench 3 and the transmission shaft 5, and then the wrench 3 is taken up to make the transmission shaft 5 difficult to rotate, so as to prevent maliciously switching the on and off of the ball valve;
the sealing structure 4 comprises a sealing sleeve 401, two supports 402 and two anti-skidding convex points 403, wherein the supports 402 are fixed on two sides of the inner part of the main body 1, the inner part of each support 402 is fixed on the sealing sleeve 401, the top end of the inner part of the sealing sleeve 401 is fixed on the corresponding anti-skidding convex point 403, the inner diameter of the sealing sleeve 401 is smaller than that of each support 402, the anti-skidding convex points 403 are arranged in a plurality, and the anti-skidding convex points 403 are arranged at equal intervals on the top end of the inner part of the sealing;
specifically, as shown in fig. 2, 3 and 6, when using this structure, firstly, when using, the inside of the two sides of the main body 1 needs to be connected with the pipeline, in order to prevent the leakage at the joint, the sealing structure 4 is provided, the bracket 402 is inserted into the inside of the connecting pipeline after connection, the sealing sleeve 401 inside the bracket 402 is sleeved on the opening of the pipeline to seal the inner wall, and the anti-slip convex points 403 can enhance the friction force of the connection to prevent the sliding from dropping, thereby realizing more stable and convenient use.
The working principle is as follows: when the anti-slip device is used, firstly, two sides of the main body 1 are connected with pipelines, the sealing structure 4 is arranged for preventing leakage at the connection position, the bracket 402 is inserted into the connecting pipeline after connection, the sealing sleeve 401 in the bracket 402 is sleeved on the opening of the pipeline to seal the inner wall, and the anti-slip convex points 403 can enhance the friction force of connection to prevent slipping off, so that more stable and convenient use is realized;
secondly, wrench 3 is pulled in the use process, wrench 3 drives transmission shaft 5 to rotate, transmission shaft 5 drives spheroid 6 to rotate, spheroid 6 is controlling the break-make of main part 1 inside, when using, in order to prevent someone from maliciously switching setting up and dismantling structure 2, the block between fixture block 202 and draw-in groove 203 fixes between wrench 3 and transmission shaft 5, can make wrench 3 drive transmission shaft 5 to rotate and drive spheroid 6 to switch the break-make when pulling, open fixed group 201 after switching over, make wrench 3 and transmission shaft 5 remove fixedly, then take up wrench 3, make transmission shaft 5 difficult to rotate, so as to prevent maliciously switching on-off of the ball valve;
finally, when using, can produce great frictional force between spheroid 6 and the main part 1, it can optimize it to set up protective structure 7, when switching over, spheroid 6 rotates, protection axle 702 passes through the fixed slot 701 and fixes between spheroid 6 the block, spheroid 6 rotates and drives protection axle 702 and rotate, bearing 703 supports the rotation of protection axle 702, make spheroid 6 frictional force when rotating littleer, finally accomplish the use work of ball valve.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a ball valve that frictional force is little, includes main part (1), spanner (3), transmission shaft (5) and spheroid (6), its characterized in that: the inside both sides of main part (1) all are fixed with seal structure (4), the inside swing joint of main part (1) has spheroid (6), and the top swing joint of spheroid (6) has transmission shaft (5), the bottom swing joint of spheroid (6) has protective structure (7), protective structure (7) include fixed slot (701), protection axle (702) and bearing (703), fixed slot (701) set up in the inside bottom of spheroid (6), bearing (703) are fixed in the inside bottom of main part (1), the inside swing joint of bearing (703) has protection axle (702), the externally mounted on transmission shaft (5) top has spanner (3), the top of spanner (3) is provided with dismantlement structure (2).
2. A low friction ball valve as defined in claim 1 wherein: dismantle structure (2) including fixed group (201), fixture block (202) and draw-in groove (203), fixed group (201) is fixed in the top of spanner (3), fixture block (202) all are fixed in the both sides of spanner (3) bottom, draw-in groove (203) all set up in the both sides of the inside bottom of transmission shaft (5).
3. A low friction ball valve as defined in claim 2 wherein: the number of the fixture blocks (202) is two, and the fixture blocks (202) are symmetrically distributed around the vertical center line of the main body (1).
4. A low friction ball valve as defined in claim 2 wherein: the outer diameter of the fixture block (202) is smaller than the inner diameter of the clamping groove (203), and a clamping structure is formed between the fixture block (202) and the clamping groove (203).
5. A low friction ball valve as defined in claim 1 wherein: seal structure (4) are including seal cover (401), support (402) and anti-skidding bump (403), support (402) all are fixed in the inside both sides of main part (1), the inside of support (402) is fixed in seal cover (401), and the inside top of seal cover (401) is fixed in anti-skidding bump (403).
6. A low friction ball valve as defined in claim 5 wherein: the number of the sealing sleeves (401) is two, and the inner diameter of each sealing sleeve (401) is smaller than that of each support (402).
7. A low friction ball valve as defined in claim 5 wherein: the anti-skidding salient points (403) are arranged in a plurality of equal-interval arrangement mode, and the anti-skidding salient points (403) are arranged on the top end inside the sealing sleeve (401) in an equal-interval mode.
8. A low friction ball valve as defined in claim 1 wherein: a clamping structure is formed between the fixing groove (701) and the protection shaft (702), and the outer diameter of the protection shaft (702) is smaller than the inner diameter of the fixing groove (701).
9. A low friction ball valve as defined in claim 1 wherein: the bottom end of the protection shaft (702) in the main body (1) through the bearing (703) forms a rotating structure, and the outer diameter of the protection shaft (702) is smaller than the inner diameter of the bearing (703).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110373270.7A CN113048259A (en) | 2021-04-07 | 2021-04-07 | Ball valve with small friction force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110373270.7A CN113048259A (en) | 2021-04-07 | 2021-04-07 | Ball valve with small friction force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113048259A true CN113048259A (en) | 2021-06-29 |
Family
ID=76518815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110373270.7A Pending CN113048259A (en) | 2021-04-07 | 2021-04-07 | Ball valve with small friction force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113048259A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2702144Y (en) * | 2004-05-31 | 2005-05-25 | 孔令生 | Clamping-pressing type hot-water heating pipe fittings |
| CN201636372U (en) * | 2010-04-26 | 2010-11-17 | 温州市石化机械阀门厂 | Internal-thread spherical valve |
| CN202972267U (en) * | 2012-05-01 | 2013-06-05 | 李耘洲 | Pipeline screw thread-free telescoping connecting pipe joint member |
| CN203477580U (en) * | 2013-09-02 | 2014-03-12 | 浙江阿珥楠阀门有限公司 | Anti-theft valve |
| CN206655981U (en) * | 2017-04-25 | 2017-11-21 | 浙江宝丰阀门有限公司 | Stainless steel integrated ball valve with good airproof performance |
| GB2566285A (en) * | 2017-09-07 | 2019-03-13 | Pegler Yorkshire Group Ltd | Valve handle locking mechanism |
-
2021
- 2021-04-07 CN CN202110373270.7A patent/CN113048259A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2702144Y (en) * | 2004-05-31 | 2005-05-25 | 孔令生 | Clamping-pressing type hot-water heating pipe fittings |
| CN201636372U (en) * | 2010-04-26 | 2010-11-17 | 温州市石化机械阀门厂 | Internal-thread spherical valve |
| CN202972267U (en) * | 2012-05-01 | 2013-06-05 | 李耘洲 | Pipeline screw thread-free telescoping connecting pipe joint member |
| CN203477580U (en) * | 2013-09-02 | 2014-03-12 | 浙江阿珥楠阀门有限公司 | Anti-theft valve |
| CN206655981U (en) * | 2017-04-25 | 2017-11-21 | 浙江宝丰阀门有限公司 | Stainless steel integrated ball valve with good airproof performance |
| GB2566285A (en) * | 2017-09-07 | 2019-03-13 | Pegler Yorkshire Group Ltd | Valve handle locking mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205716067U (en) | PVC sewer pipe | |
| CN113048259A (en) | Ball valve with small friction force | |
| CN203743436U (en) | Mechanical sealing device for salt slurry pump with large shaft diameter | |
| CN201074717Y (en) | Straight-through viewing mirror | |
| CN107939985B (en) | Mainspring type is from slowing down valve protection device | |
| CN217736294U (en) | High-strength wafer type sealing butterfly valve | |
| CN204805778U (en) | Pipes joints | |
| CN212899754U (en) | Pneumatic pipeline stop valve that leakproofness is good | |
| CN211901669U (en) | Reversing three-way valve | |
| CN218118685U (en) | High platform ball valve | |
| CN212837664U (en) | Oil pipe plug | |
| CN202647039U (en) | Socket locking device for glass fiber reinforced plastic pipe | |
| CN211820933U (en) | Ball valve convenient to dredge | |
| CN220540901U (en) | Natural gas pipeline damage detection device | |
| CN214958622U (en) | Cable sealing threading pipe for controlled environment | |
| CN204592643U (en) | The universal decoration cover structure of bulb | |
| CN114542986B (en) | Liquid carbon dioxide low-temperature closed injection device | |
| CN204878884U (en) | Butt clamp swing check valve | |
| CN212960371U (en) | Novel self-anchored cast pipe joint structure | |
| CN216339932U (en) | Green city water supply and drainage pipeline | |
| CN219994702U (en) | Wear-resisting rubber tube convenient to installation | |
| CN207145796U (en) | A kind of adjustable scupper hose | |
| CN211259677U (en) | Double-eccentric soft sealing flange butterfly valve | |
| CN2477905Y (en) | Valve | |
| CN216643483U (en) | Building pipeline plugging 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210629 |