CN112728268A - Domestic sewage treatment ware connecting pipe that leakproofness is strong - Google Patents
Domestic sewage treatment ware connecting pipe that leakproofness is strong Download PDFInfo
- Publication number
- CN112728268A CN112728268A CN202011476424.7A CN202011476424A CN112728268A CN 112728268 A CN112728268 A CN 112728268A CN 202011476424 A CN202011476424 A CN 202011476424A CN 112728268 A CN112728268 A CN 112728268A
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- China
- Prior art keywords
- wall
- sewage treatment
- pipe body
- connecting pipe
- treatment device
- 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.)
- Withdrawn
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 94
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 230000000694 effects Effects 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003292 glue Substances 0.000 description 9
- 239000000565 sealant Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/04—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
-
- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/16—Screw-threaded joints
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
Abstract
The invention discloses a connecting pipe of a household sewage treatment device with strong sealing performance, relates to the technical field of connecting pipes of household sewage treatment devices, and aims to solve the problems that when the connecting pipe of the conventional household sewage treatment device is connected with a sewage treatment device, the connecting pipe is generally in sealing connection through threads and a raw rubber belt, and when the threads are locked after the raw rubber belt is wound, the raw rubber belt is damaged, so that the connection sealing performance of the connecting pipe and the sewage treatment device is insufficient, and the connecting part leaks water. The inner wall of body both sides is all fixed and is provided with the connecting pipe, and the one end of connecting pipe extends to the outside one side of body, the mounting groove has been seted up to the outer wall that the connecting pipe is located the outside one end of body, and the mounting groove is provided with threely, and is three the inside of mounting groove is all fixed and is provided with first sealed gluey ring, the inner wall of first sealed gluey ring closely laminates with the inner wall of mounting groove, and the external diameter of first sealed gluey ring is greater than the external diameter of connecting pipe.
Description
Technical Field
The invention relates to the technical field of connecting pipes of household sewage treatment devices, in particular to a connecting pipe of a household sewage treatment device with strong sealing performance.
Background
Domestic sewage has become a serious problem that many families face, need to discharge a large amount of sewage, and in order to the water economy resource, needs domestic sewage treatment ware to handle sewage to can be with sewage reutilization, when using domestic sewage treatment ware, need the connecting pipe to connect the sewage treatment ware.
When the connecting pipe of the existing household sewage treatment device is connected with a sewage treatment device, the connecting pipe is generally in sealing connection through threads and a raw rubber belt, and when the threads are locked after the raw rubber belt is wound, the raw rubber belt can be damaged, so that the connection sealing performance of the connecting pipe and the sewage treatment device is insufficient, and the water leakage of the connecting part is caused; therefore, the existing requirements are not met, and the connecting pipe of the household sewage treatment device with strong sealing performance is provided for the requirements.
Disclosure of Invention
The invention aims to provide a connecting pipe of a household sewage treatment device with strong sealing performance, which solves the problem that when the connecting pipe of the existing household sewage treatment device proposed in the background technology is connected with a sewage treatment device, the connecting pipe is generally sealed and connected through threads and a raw rubber belt, and when the threads are locked after the raw rubber belt is wound, the raw rubber belt is damaged, so that the connection sealing performance of the connecting pipe and the sewage treatment device is insufficient, and the water leakage is caused at the connecting part.
In order to achieve the purpose, the invention provides the following technical scheme: a household sewage treatment device connecting pipe with strong sealing performance comprises a pipe body, wherein connecting pipes are fixedly arranged on the inner walls of two sides of the pipe body, one end of each connecting pipe extends to one side of the outside of the pipe body, the outer wall, located at one end of the outside of the pipe body, of each connecting pipe is provided with three mounting grooves, first sealing rubber rings are fixedly arranged in the three mounting grooves, the inner walls of the first sealing rubber rings are tightly attached to the inner walls of the mounting grooves, the outer diameter of each first sealing rubber ring is larger than that of each connecting pipe, a second sealing rubber ring is fixedly arranged on the outer wall of one end of each connecting pipe, the outer diameter of each second sealing rubber ring is the same as that of each first sealing rubber ring, a sewage treatment device threaded pipe body is arranged on one side of the pipe body, limiting rings are fixedly arranged on the outer walls of two sides of the pipe body, the movable hole is formed in one side of the inner portion of the fixing cap, the fixing cap is connected to the outer wall of the pipe body in a sleeved mode through the movable hole, and the threaded sleeve is fixedly arranged inside the fixing cap.
Preferably, the diameter of the outer wall of the connecting pipe is fitted with the inner diameter of the threaded pipe body of the sewage treatment device in a sliding fit mode, the inner wall of the threaded sleeve is in threaded fit with the outer wall of the threaded pipe body of the sewage treatment device, and the diameter of the pipe body is the same as that of the threaded pipe body of the sewage treatment device.
Preferably, the outer walls of the two ends of the pipe body are fixedly provided with third sealing rubber rings.
Preferably, the inner wall of the first sealing rubber ring is fixedly connected with the inner wall of the mounting groove through a waterproof rubber layer.
Preferably, the material of body is three type polypropylene pipes, the spacing ring is located between fixed cap one side inner wall and thread bush one side outer wall, the inner wall in activity hole and the outer wall laminating and the sliding connection of body.
Preferably, the diameter of the limiting ring is larger than that of the movable hole, and the outer wall of the fixing cap is provided with a threading die.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the first sealing rubber ring, the second sealing rubber ring and the connecting pipe are arranged, so that when the pipe body is connected with the sewage treatment device threaded pipe body, the connecting pipe can be inserted into the sewage treatment device threaded pipe body, the outer wall of the connecting pipe is attached to and slidably connected with the inner wall of the sewage treatment device threaded pipe body, when the connecting pipe is inserted into the sewage treatment device threaded pipe body, the outer wall of the connecting pipe is attached to the inner wall of the sewage treatment device threaded pipe body, and because the outer diameters of the first sealing rubber ring and the second sealing rubber ring are larger than the outer diameter of the connecting pipe, when the connecting pipe is inserted into the sewage treatment device threaded pipe body, the inner wall of the sewage treatment device threaded pipe body extrudes the first sealing rubber ring and the second sealing rubber ring with the connecting pipe, so that the outer walls of the first sealing rubber ring and the second sealing rubber ring are deformed and tightly connected with the outer wall of the connecting pipe and the inner wall of the sewage treatment device threaded pipe body Close laminating to make rivers can not spill through between connecting pipe outer wall and the sewage treatment ware screwed pipe body inner wall, rivers can enter into the inside of body through the inside of sewage treatment ware screwed pipe body and connecting pipe, thereby seal through sealed glue ring of three first and a second and form four sealings between sewage treatment ware screwed pipe body and the body, make the leakproofness between sewage treatment ware screwed pipe body and the body higher.
2. By arranging the third sealing rubber ring, the fixing cap, the thread sleeve and the limiting ring, when the connecting pipe is inserted into the threaded pipe body of the sewage treatment device, the fixing cap is moved to enable the thread sleeve in the fixing cap to be in threaded connection with the outer wall of the threaded pipe body of the sewage treatment device, then the fixing cap is rotated to enable the fixing cap to be locked with the threads on the outer wall of the threaded pipe body of the sewage treatment device, and because the limiting ring is fixedly connected with the pipe body, and the limiting ring is positioned on one side in the fixing cap, when the fixing cap is locked with the outer wall of the threaded pipe body of the sewage treatment device, the fixing cap can move the pipe body towards the threaded pipe body of the sewage treatment device through the limiting ring, then the outer wall of one end of the pipe body can be attached to the outer wall of one end of the threaded pipe body of the sewage treatment device, then the fixing cap is locked, and the third sealing rubber ring on, thereby avoid rivers can spill through between body one end outer wall and the sewage treatment ware screwed pipe body one end outer wall, it is better to make the leakproofness between body one end outer wall and the sewage treatment ware screwed pipe body one end outer wall through the third sealant ring, the leakproofness is higher when making body and sewage treatment ware screwed pipe body coupling through the triple seal of third sealant ring, first sealant ring and second sealant ring, and make body and sewage treatment ware screwed pipe body can fix mutually through the locking cap.
Drawings
FIG. 1 is a schematic overall sectional view of the present invention;
FIG. 2 is an enlarged view of the part A of the present invention;
FIG. 3 is a schematic view of a connection structure of the pipe body and the threaded pipe body of the sewage treatment device of the present invention;
FIG. 4 is a schematic view of the enlarged structure at B of the present invention;
FIG. 5 is a schematic cross-sectional view of a tube body according to the present invention;
FIG. 6 is a schematic view of the present invention showing a part of the enlarged structure at the position C;
FIG. 7 is a schematic view of a locking cap and a threading die according to the present invention;
FIG. 8 is a schematic side sectional view of the waterproof adhesive layer and the first sealant ring of the present invention;
in the figure: 1. a pipe body; 2. a connecting pipe; 3. mounting grooves; 4. a first sealant ring; 5. a second sealing rubber ring; 6. a sewage treatment device threaded pipe body; 7. a limiting ring; 8. a fixing cap; 9. a movable hole; 10. a third seal rubber ring; 11. a waterproof glue layer; 12. threading die; 13. and (4) a threaded sleeve.
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.
Referring to fig. 1-8, an embodiment of the present invention: a household sewage treatment device connecting pipe with strong sealing performance comprises a pipe body 1, wherein connecting pipes 2 are fixedly arranged on the inner walls of two sides of the pipe body 1, one end of each connecting pipe 2 extends to one side of the outside of the pipe body 1, three mounting grooves 3 are formed in the outer wall, positioned at one end of the outside of the pipe body 1, of each connecting pipe 2, a first sealing rubber ring 4 is fixedly arranged inside each mounting groove 3, the inner wall of each first sealing rubber ring 4 is tightly attached to the inner wall of each mounting groove 3, the outer diameter of each first sealing rubber ring 4 is larger than that of each connecting pipe 2, a second sealing rubber ring 5 is fixedly arranged on the outer wall of one end of each connecting pipe 2, the outer diameter of each second sealing rubber ring 5 is the same as that of each first sealing rubber ring 4, a sewage treatment device threaded pipe body 6 is arranged on one side of the pipe body 1, limiting rings 7 are fixedly arranged on the outer walls, thereby when making solid fixed cap 8 remove, solid fixed cap 8 can remove body 1, and the outside of spacing ring 7 is provided with solid fixed cap 8, and activity hole 9 has been seted up to one side of solid fixed cap 8 inside, and solid fixed cap 8 cup joints at the outer wall of body 1 through activity hole 9, and solid fixed cap 8's inside is provided with thread bush 13.
Further, the diameter of the outer wall of connecting pipe 2 and the internal diameter laminating and the sliding fit of sewage treatment ware screwed pipe body 6, set up the diameter of the outer wall of connecting pipe 2 into the internal diameter laminating and the sliding fit with sewage treatment ware screwed pipe body 6, thereby make when inserting the inside of sewage treatment ware screwed pipe body 6 with connecting pipe 2, the outer wall of connecting pipe 2 can laminate with the inner wall of sewage treatment ware screwed pipe body 6, the inner wall of thread bush 13 and the 6 outer wall screw-thread fit of sewage treatment ware screwed pipe body, the diameter of body 1 is the same with the diameter of sewage treatment ware screwed pipe body 6.
Further, the outer walls at the two ends of the pipe body 1 are fixedly provided with a third sealing rubber ring 10, and the third sealing rubber ring 10 is arranged, so that the sealing performance between the outer wall of one end of the pipe body 1 and the outer wall of one end of the threaded pipe body 6 of the sewage treatment device is better through the third sealing rubber ring 10.
Further, the inner wall of first seal ring 4 passes through waterproof glue layer 11 and mounting groove 3's inner wall fixed connection, through waterproof glue layer 11 with first seal ring 4 and mounting groove 3 fixed connection to avoid first seal ring 4 and mounting groove 3 to break away from.
Further, the pipe body 1 is made of a polypropylene tri-type pipe, and because the polypropylene tri-type pipe has the characteristics of energy conservation, material conservation, environmental protection, light weight, high strength, corrosion resistance, smooth inner wall and no scale, by setting the material of the pipe body 1 as the polypropylene tri-type pipe, the strength of the pipe body 1 is better and the pipe body is more corrosion-resistant, the limiting ring 7 is positioned between the inner wall of one side of the fixing cap 8 and the outer wall of one side of the thread sleeve 13, by arranging the stop collar 7 between the inner wall of the fixing cap 8 and the outer wall of the threaded sleeve 13, so that when the connecting pipe 2 is pulled out, the fixing cap 8 can be reversed, so that the fixing cap 8 moves towards the pipe body 1, then one end of the thread sleeve 13 is jointed with one side end face of the limiting ring 7, therefore, when the fixing cap 8 continues to move, the connecting pipe 2 can be pulled out through the limiting ring 7, and the inner wall of the movable hole 9 is attached to the outer wall of the pipe body 1 and is in sliding connection with the outer wall of the pipe body.
Further, the diameter of spacing ring 7 is greater than the diameter of activity hole 9, and the outer wall of locking cap 8 is provided with threading die 12, through setting up threading die 12 to make more light when rotating locking cap 8.
The working principle is as follows: when the connecting pipe 2 is inserted into the sewage treatment device threaded pipe body 6, the outer wall of the connecting pipe 2 is attached to the inner wall of the sewage treatment device threaded pipe body 6, and the outer diameters of the first sealing rubber ring 4 and the second sealing rubber ring 5 are larger than the outer diameter of the connecting pipe 2, so that when the connecting pipe 2 is inserted into the sewage treatment device threaded pipe body 6, the connecting pipe 2 is difficult to be inserted into the sewage treatment device threaded pipe body 6, firstly, a little lubricating oil is added into the outer wall of the connecting pipe 2, and then, one end of the connecting pipe 2 is inserted into the inlet of the sewage treatment device threaded pipe body 6, then the fixing cap 8 is moved to enable the thread sleeve 13 in the fixing cap 8 to be in threaded connection with the outer wall of the threaded pipe body 6 of the sewage treatment device, then the wrench is wrenched to turn the fixing cap 8, so that the fixing cap 8 is locked with the threads on the outer wall of the threaded pipe body 6 of the sewage treatment device, and because the limiting ring 7 is fixedly connected with the pipe body 1 and the limiting ring 7 is positioned at one side in the fixing cap 8, when the fixing cap 8 is locked with the outer wall of the threaded pipe body 6 of the sewage treatment device, the fixing cap 8 can move the pipe body 1 towards the threaded pipe body 6 of the sewage treatment device through the limiting ring 7, so that the connecting pipe 2 is inserted into the threaded pipe body 6 of the sewage treatment device through the threaded connection of the fixing cap 8 and the threaded pipe body 6 of the sewage treatment device, and the fixing cap 8 is turned through the wrench and the wrench 12 to enable the connecting pipe 2 to be more easily inserted into the threaded pipe, when the connecting pipe 2 is inserted into the threaded pipe body 6 of the sewage treatment device, the inner wall of the threaded pipe body 6 of the sewage treatment device extrudes the first sealing rubber ring 4 and the second sealing rubber ring 5, so that the first sealing rubber ring 4 and the second sealing rubber ring 5 deform and tightly fit with the outer wall of the connecting pipe 2 and the inner wall of the threaded pipe body 6 of the sewage treatment device, water flow cannot leak out from the outer wall of the connecting pipe 2 and the inner wall of the threaded pipe body 6 of the sewage treatment device, the water flow enters the inner part of the pipe body 1 through the inner parts of the threaded pipe body 6 of the sewage treatment device and the connecting pipe 2, four seals are formed between the threaded pipe body 6 of the sewage treatment device and the pipe body 1 through the three first sealing rubber rings 4 and one second sealing rubber ring 5, and when the fixing cap 8 is rotated, the outer wall of one end of the pipe body 1 fits with the outer wall of one end of the threaded pipe, after locking the locking cap 8, the third seal glue ring 10 of 1 one end outer wall of body can be extruded by sewage treatment ware screwed pipe body 6 and body 1, thereby avoid rivers can spill through between 1 one end outer wall of body and the 6 one end outer walls of sewage treatment ware screwed pipe body, it is better to make the leakproofness between 1 one end outer wall of body and the 6 one end outer walls of sewage treatment ware screwed pipe body 6 through third seal glue ring 10, thereby through third seal glue ring 10, the leakproofness is higher when first seal glue ring 4 and the triple seal of second seal glue ring 5 make body 1 be connected with sewage treatment ware screwed pipe body 6, and make body 1 and sewage treatment ware screwed pipe body 6 can be fixed mutually through locking cap 8.
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 (6)
1. The utility model provides a domestic sewage treatment ware connecting pipe that leakproofness is strong, includes body (1), its characterized in that: the inner walls of two sides of the pipe body (1) are fixedly provided with connecting pipes (2), one ends of the connecting pipes (2) extend to one side of the outside of the pipe body (1), the outer wall of each connecting pipe (2) positioned at one end of the outside of the pipe body (1) is provided with three mounting grooves (3), three mounting grooves (3) are internally and fixedly provided with first sealing rubber rings (4), the inner walls of the first sealing rubber rings (4) are tightly attached to the inner walls of the mounting grooves (3), the outer diameters of the first sealing rubber rings (4) are larger than the outer diameter of the connecting pipes (2), the outer wall of one end of each connecting pipe (2) is fixedly provided with second sealing rubber rings (5), the outer diameter of each second sealing rubber ring (5) is the same as the outer diameter of the first sealing rubber ring (4), one side of the pipe body (1) is provided with a sewage treatment device screwed pipe body (6), the outer wall of body (1) both sides is all fixed and is provided with spacing ring (7), the outside of spacing ring (7) is provided with locking cap (8), activity hole (9) have been seted up to inside one side of locking cap (8), and locking cap (8) cup joint the outer wall at body (1) through activity hole (9), the fixed thread bush (13) that is provided with in inside of locking cap (8).
2. A strong sealing connection pipe for a domestic sewage treatment apparatus as claimed in claim 1, wherein: the diameter of the outer wall of the connecting pipe (2) is attached to the inner diameter of the threaded pipe body (6) of the sewage treatment device in a sliding fit mode, the inner wall of the threaded sleeve (13) is in threaded fit with the outer wall of the threaded pipe body (6) of the sewage treatment device, and the diameter of the pipe body (1) is the same as that of the threaded pipe body (6) of the sewage treatment device.
3. A strong sealing connection pipe for a domestic sewage treatment apparatus as claimed in claim 1, wherein: and the outer walls of the two ends of the pipe body (1) are fixedly provided with third sealing rubber rings (10).
4. A strong sealing connection pipe for a domestic sewage treatment apparatus as claimed in claim 1, wherein: the inner wall of the first sealing rubber ring (4) is fixedly connected with the inner wall of the mounting groove (3) through a waterproof rubber layer (11).
5. A strong sealing connection pipe for a domestic sewage treatment apparatus as claimed in claim 1, wherein: the material of body (1) is three type polypropylene pipes, spacing ring (7) are located between retaining cap (8) one side inner wall and thread bush (13) one side outer wall, the inner wall of activity hole (9) and the outer wall laminating and sliding connection of body (1).
6. A strong sealing connection pipe for a domestic sewage treatment apparatus as claimed in claim 1, wherein: the diameter of the limiting ring (7) is larger than that of the movable hole (9), and the outer wall of the fixing cap (8) is provided with a threading die (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011476424.7A CN112728268A (en) | 2020-12-14 | 2020-12-14 | Domestic sewage treatment ware connecting pipe that leakproofness is strong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011476424.7A CN112728268A (en) | 2020-12-14 | 2020-12-14 | Domestic sewage treatment ware connecting pipe that leakproofness is strong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112728268A true CN112728268A (en) | 2021-04-30 |
Family
ID=75602163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011476424.7A Withdrawn CN112728268A (en) | 2020-12-14 | 2020-12-14 | Domestic sewage treatment ware connecting pipe that leakproofness is strong |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112728268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115949792A (en) * | 2023-01-09 | 2023-04-11 | 江苏麦科特种阀门科技有限公司 | Connecting valve |
-
2020
- 2020-12-14 CN CN202011476424.7A patent/CN112728268A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115949792A (en) * | 2023-01-09 | 2023-04-11 | 江苏麦科特种阀门科技有限公司 | Connecting valve |
| CN115949792B (en) * | 2023-01-09 | 2023-10-20 | 江苏麦科特种阀门科技有限公司 | Connecting valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210430 |
|
| WW01 | Invention patent application withdrawn after publication |