CN109854849A - A kind of effective tube head docking facilities of double-walled screw thread - Google Patents
A kind of effective tube head docking facilities of double-walled screw thread Download PDFInfo
- Publication number
- CN109854849A CN109854849A CN201910254165.4A CN201910254165A CN109854849A CN 109854849 A CN109854849 A CN 109854849A CN 201910254165 A CN201910254165 A CN 201910254165A CN 109854849 A CN109854849 A CN 109854849A
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- Prior art keywords
- ring
- tube head
- double
- walled
- butt joint
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- 238000003032 molecular docking Methods 0.000 title claims abstract description 22
- 210000001503 joint Anatomy 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims description 16
- 230000002265 prevention Effects 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The invention discloses be related to double-walled screwed pipe technical field, specially a kind of effective tube head docking facilities of double-walled screw thread, including tube head butt joint ring, the tube head butt joint ring is equipped with two groups, two groups of tube head butt joint rings are separately fixed at the end positions of connection hose, it is connected with each other between double-walled screwed pipe I and double-walled screwed pipe II by tube head butt joint ring in the present invention, it connects convenient for disassembly and assembly, and it is not easily to fall off, connection structure is firm, and it ensure that good leakproofness, practicability is stronger, two groups are equipped with for connecting the tube head butt joint ring of both sides pipeline in the present invention, it is equipped between two groups of tube head butt joint rings for a qualitative flexible connection hose, avoiding double-walled screwed pipe, fixed situation needs to overhaul inconvenience when dismounting, directly replace tube head butt joint ring, it is whole without dismounting, connection hose between two groups of tube head butt joint rings is to company The gap of certain mountable adjusting is provided when connecing both sides double-walled screwed pipe, it is reasonable in design, it is practical.
Description
Technical field
The present invention relates to double-walled screwed pipe technical field, specially a kind of effective tube head docking facilities of double-walled screw thread.
Background technique
The promotion and application of double-walled screwed pipe, which are in, rises the situation stage, and all technical reaches using standard,
Its critical external compressive resistance ability is strong, project cost is low, easy for construction, the coefficient of friction resistance is small, and flow is big, low-temperature resistant and shock resistant performance, chemistry are steady
Qualitative good, long service life, excellent wear-resisting property and have deflection degree appropriate, but it there are still following disadvantages in actual use
End:
1. in the prior art, double-walled screwed pipe is easy to appear connector shakiness when tube head docks, the phenomenon that being easy to fall off, and not side
Just it dismounts, it is inconvenient to use；
2. double-walled screwed pipe is when tube head docks, leakproofness is poor, and the position of tube head docking is easy to appear leakage phenomenon, inconvenient
Actual use.
For this purpose, we have proposed a kind of effective tube head docking facilities of double-walled screw thread to solve above-mentioned drawback.
Summary of the invention
The purpose of the present invention is to provide a kind of effective tube head docking facilities of double-walled screw thread, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of effective tube head docking facilities of double-walled screw thread, packet
Tube head butt joint ring is included, the tube head butt joint ring is equipped with two groups, and two groups of tube head butt joint rings are separately fixed at the both ends position of connection hose
It sets, tube head butt joint ring is equipped with outer fixed ring, interior pushing out ring and rubber pressure ring far from the one side of connection hose, the outer fixed ring, interior
Pushing out ring and rubber pressure ring structure annular in shape, interior pushing out ring are nested in the inner ring of outer fixed ring, and interior pushing out ring and outer fixed ring are uniform
Body is arranged on tube head butt joint ring, and rubber pressure ring is movably nested between interior pushing out ring and the interlayer of outer fixed ring, the tube head at both ends
Being fixed respectively on butt joint ring has double-walled screwed pipe I and double-walled screwed pipe II.
Preferably, the double-walled screwed pipe I is docked close to one end of tube head butt joint ring and double-walled screwed pipe II close to tube head
One end of ring is fastened between corresponding interior pushing out ring outer ring and the interlayer of rubber pressure ring inner ring, double-walled screwed pipe I and double-walled spiral shell
The outer ring of line pipe II is equipped with thread groove.
Preferably, the rubber seal inner ring that multi-turn equidistantly distributes, rubber are fixed at the inner ring of the rubber pressure ring
Inner ring seal is sealed in thread groove.
Preferably, it is fixedly welded with spring at the outer ring of the rubber pressure ring, spring is fixed far from one end of rubber pressure ring
It is welded at the inner ring of outer fixed ring, the rounded array-like of spring is equipped with multiple groups.
Preferably, the interior pushing out ring is equipped with loss prevention end ring, the cross section of loss prevention end ring far from one end end of connection hose
Semicircular in shape.
Preferably, eight groups of threaded holes are distributed in rounded array-like at the outer ring of the outer fixed ring, and threaded hole passes through simultaneously
The Internal and external cycle for wearing outer fixed ring is arranged, and is connected with housing screw by being threadedly engaged in threaded hole, the screw cap end position of housing screw
At the outer ring of outer fixed ring, the screw rod end of housing screw, which contradicts, to be pressed together at the outer ring of rubber pressure ring.
Preferably, movable sleeve is equipped with interior rubber ring and outer rubber ring, the interior rubber ring at the outer ring of the housing screw
With outer rubber ring structure annular in shape, interior rubber ring fixation is located at outer fixed ring inner peripheral surface, and outer rubber ring is fixed to be located at outside
The outer peripheral surface of fixed ring.
Preferably, the tube head butt joint ring is fixed with outer anti-wear ring and interior anti-wear in the one side of connection hose
The outer of connection hose is arranged in ring, the equal semicircular in shape in cross section of the outer anti-wear ring and interior anti-wear ring, outer anti-wear ring
The inner ring of connection hose is arranged in circle, interior anti-wear ring.
Preferably, it is connected with connection side by being threadedly engaged at the outer ring of the outer fixed ring far from tube head butt joint ring, even
Edge fit is integrally formed with reinforcement sealing ring far from connection hose on one side, and the reinforcement sealing ring is annular in shape to be sealed in outer fixed ring
One side far from tube head butt joint ring reinforces race diameter of the inner ring diameter greater than double-walled screwed pipe I of sealing ring and is less than rubber
The race diameter of pressure ring.
Preferably, the reinforcement sealing ring, which is fitted in the one side of rubber pressure ring, is fixed with rubber outer ring, rubber outer ring
Shape seals rubber pressure ring and connection side contact position in a ring.
Compared with prior art, the beneficial effects of the present invention are: structure of the invention setting rationally, functional, have with
Lower advantage:
1. being connected with each other between double-walled screwed pipe I and double-walled screwed pipe II by tube head butt joint ring in the present invention, dismounting side is connected
Just, and not easily to fall off, connection structure is firm, and ensure that good leakproofness, and practicability is stronger；
2. be equipped with two groups for connecting the tube head butt joint ring of both sides pipeline in the present invention, be equipped between two groups of tube head butt joint rings for
One qualitative flexible connection hose, avoiding double-walled screwed pipe, fixed situation needs to overhaul inconvenience when dismounting, directly
Replacement tube head butt joint ring is connect, whole without dismounting, the connection hose between two groups of tube head butt joint rings gives connection both sides double-walled
The gap of certain mountable adjusting is provided when screwed pipe, it is reasonable in design, it is practical；
3. double-walled screw thread tube end can be tightly pressed between rubber pressure ring and interior pushing out ring by housing screw in the present invention, both guaranteed
Higher stable connection again has the function of reinforcing leakproofness.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is front view of the present invention；
Fig. 3 is sectional view at A-A in Fig. 2 of the present invention；
Fig. 4 is structure enlargement diagram at B in Fig. 3 of the present invention.
In figure: double-walled screwed pipe I1, double-walled screwed pipe II2, thread groove 3, connection hose 4, outer fixed ring 5, reinforcing sealing
Ring 6, housing screw 7, outer rubber ring 8, outer anti-wear ring 9, tube head butt joint ring 10, interior anti-wear ring 11, interior rubber ring 12, rubber
Pressure ring 13, interior pushing out ring 14, loss prevention end ring 15, connection side 16, rubber seal inner ring 17, rubber outer ring 18, threaded hole 19, spring
20。
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1 to FIG. 4: a kind of effective tube head docking facilities of double-walled screw thread, packet
Tube head butt joint ring 10 is included, tube head butt joint ring 10 is equipped with two groups, and two groups of tube head butt joint rings 10 are separately fixed at the both ends of connection hose 4
Position, tube head butt joint ring 10 are equipped with outer fixed ring 5, interior pushing out ring 14 and rubber pressure ring 13, outer fixation far from the one side of connection hose 4
Ring 5, interior pushing out ring 14 and the structure annular in shape of rubber pressure ring 13, interior pushing out ring 14 are nested in the inner ring of outer fixed ring 5, interior pushing out ring 14
It is integrally disposed upon on tube head butt joint ring 10 with outer fixed ring 5, rubber pressure ring 13 is movably nested at interior pushing out ring 14 and outer fixed ring 5
Interlayer between, being fixed respectively on the tube head butt joint ring 10 at both ends has double-walled screwed pipe I1 and double-walled screwed pipe II2.
As shown in Figure 4, wherein double-walled screwed pipe I1 is close close to one end of tube head butt joint ring 10 and double-walled screwed pipe II2
One end of tube head butt joint ring 10 is fastened between corresponding 14 outer ring of interior pushing out ring and the interlayer of 13 inner ring of rubber pressure ring, double-walled spiral shell
The outer ring of line pipe I1 and double-walled screwed pipe II2 are equipped with thread groove 3, and it is equidistant to be fixed with multi-turn at the inner ring of rubber pressure ring 13
The rubber seal inner ring 17 of distribution, rubber seal inner ring 17 are sealed in thread groove 3, ensure that rubber pressure ring 13 by double-walled spiral shell
Line tube end is pressed on leakproofness when interior 14 outer ring of pushing out ring, and spring 20, spring are fixedly welded at the outer ring of rubber pressure ring 13
20 one end far from rubber pressure ring 13 are fixedly welded at the inner ring of outer fixed ring 5, and the rounded array-like of spring 20 is equipped with multiple groups,
Spring 20 has certain buffering and damping and protective effect, stronger to the protectiveness of device.
As shown in Figure 3, wherein interior pushing out ring 14 is equipped with loss prevention end ring 15, loss prevention end far from one end end of connection hose 4
The cross section semicircular in shape of ring 15 ensure that when double-walled screw thread tube end to be inserted between rubber pressure ring 13 and interior pushing out ring 14,
It is worn caused by will not being contacted because of the end of interior pushing out ring 14, increases the anti-wear protectiveness to double-walled screw thread tube end.
As shown in Figure 4, eight groups of threaded holes 19, screw thread is distributed in rounded array-like at the outer ring of China and foreign countries' fixed ring 5
Hole 19 is arranged through the Internal and external cycle of outer fixed ring 5 simultaneously, is connected with housing screw 7 by being threadedly engaged in threaded hole 19, compresses
The screw cap end of screw 7 is located at the outer ring of outer fixed ring 5, and the screw rod end of housing screw 7, which contradicts, is pressed together on rubber pressure ring 13
At outer ring, movable sleeve is equipped with interior rubber ring 12 and outer rubber ring 8, interior rubber ring 12 and outer rubber ring 8 at the outer ring of housing screw 7
Structure annular in shape, interior rubber ring 12 is fixed to be located at outer 5 inner peripheral surface of fixed ring, and the fixation of outer rubber ring 8 is located at outer fixed ring 5
Outer peripheral surface, outer rubber ring 8 and interior rubber ring 12 strengthen leakproofness of the housing screw 7 at outer 5 position of fixed ring, into
One step ensure that the leakproofness of tube head docking facilities, and wherein tube head butt joint ring 10 is fixed in the one side of connection hose 4
Outer anti-wear ring 9 and interior anti-wear ring 11, the equal semicircular in shape in cross section of outer anti-wear ring 9 and interior anti-wear ring 11, outer abrasionproof
The outer ring of connection hose 4 is arranged in damage ring 9, and the inner ring of connection hose 4 is arranged in interior anti-wear ring 11, connects to connection hose 4
Good protection has been carried out in the part of 10 end of tube head butt joint ring, has avoided the occurrence of Rigid bending, junction is easy damaged feelings
Condition.
It is connected with connection side 16 by being threadedly engaged at outer outer ring of the fixed ring 5 far from tube head butt joint ring 10, connects side 16
Reinforce sealing ring 6 far from being integrally formed on one side for connection hose 4, reinforcing sealing ring 6, annular in shape to be sealed in outer fixed ring 5 separate
The one side of tube head butt joint ring 10 reinforces race diameter of the inner ring diameter greater than double-walled screwed pipe I1 of sealing ring 6 and is less than rubber
The race diameter of pressure ring 13, reinforcement sealing ring 6, which is fitted in the one side of rubber pressure ring 13, is fixed with rubber outer ring 18, outside rubber
Rubber pressure ring 13 and the sealing of connection 16 contact position of side ensure that the sealing performance for reinforcing sealing ring 6 to ring 18 by shape in a ring, guarantee
Tube head butt joint ring 10 connects inside and outside isolation effect when double-walled screwed pipe I1 and double-walled screwed pipe II2.
Working principle: when connecting double-walled screwed pipe I1 and double-walled screwed pipe II2, the tube head pair at 4 both ends of hose will be connected
Connect the end that ring 10 is directed at corresponding double-walled screwed pipe I1 and double-walled screwed pipe II2, double-walled screwed pipe I1 and double-walled screwed pipe II2
It is plugged together between the rubber pressure ring 13 and interior pushing out ring 14 on both sides tube head butt joint ring 10 respectively, then rotatably compresses screw 7, until
Double-walled screw thread tube end is pressed between rubber pressure ring 13 and interior pushing out ring 14, completes installation at this time.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of effective tube head docking facilities of double-walled screw thread, including tube head butt joint ring (10), it is characterised in that: the tube head docking
Ring (10) is equipped with two groups, and two groups of tube head butt joint rings (10) are separately fixed at the end positions of connection hose (4), tube head butt joint ring
(10) one side far from connection hose (4) is equipped with outer fixed ring (5), interior pushing out ring (14) and rubber pressure ring (13), the outer fixation
Ring (5), interior pushing out ring (14) and rubber pressure ring (13) structure annular in shape, interior pushing out ring (14) are nested in the interior of outer fixed ring (5)
Circle, interior pushing out ring (14) and outer fixed ring (5) are integrally disposed upon on tube head butt joint ring (10), and rubber pressure ring (13) is movably nested at
Between interior pushing out ring (14) and the interlayer of outer fixed ring (5), being fixed respectively on the tube head butt joint ring (10) at both ends has double-walled spiral shell
Line pipe I(1) and double-walled screwed pipe II(2).
2. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 1, it is characterised in that: the double-walled screw thread
Pipe I(1) one end close to tube head butt joint ring (10) and double-walled screwed pipe II(2) engage close to the one end of tube head butt joint ring (10)
Between corresponding interior pushing out ring (14) outer ring and the interlayer of rubber pressure ring (13) inner ring, double-walled screwed pipe I(1) and double-walled screwed pipe
II(2 outer ring) is equipped with thread groove (3).
3. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 2, it is characterised in that: the rubber pressure ring
(13) the rubber seal inner ring (17) that multi-turn equidistantly distributes is fixed at inner ring, rubber seal inner ring (17) is sealed in spiral shell
In groove (3).
4. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 1, it is characterised in that: the rubber pressure ring
(13) it is fixedly welded at outer ring spring (20), spring (20) is fixedly welded far from the one end of rubber pressure ring (13) and fixes outside
At the inner ring of ring (5), spring (20) rounded array-like is equipped with multiple groups.
5. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 1, it is characterised in that: the interior pushing out ring
(14) one end end far from connection hose (4) is equipped with loss prevention end ring (15), the cross section semicircular in shape of loss prevention end ring (15).
6. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 1, it is characterised in that: the outer fixed ring
(5) eight groups of threaded holes (19) are distributed in rounded array-like at outer ring, and threaded hole (19) is simultaneously through the interior of outer fixed ring (5)
Outer ring is arranged, and is connected with housing screw (7) in threaded hole (19) by being threadedly engaged, and the screw cap end of housing screw (7) is located at outer
At the outer ring of fixed ring (5), the screw rod end of housing screw (7), which contradicts, to be pressed together at the outer ring of rubber pressure ring (13).
7. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 6, it is characterised in that: the housing screw
(7) movable sleeve is equipped with interior rubber ring (12) and outer rubber ring (8), the interior rubber ring (12) and outer rubber ring (8) at outer ring
Structure annular in shape, interior rubber ring (12) fixation are located at outer fixed ring (5) inner peripheral surface, and outer rubber ring (8) is fixed to be located at outside
The outer peripheral surface of fixed ring (5).
8. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 1, it is characterised in that: the tube head docking
Ring (10) is fixed with outer anti-wear ring (9) and interior anti-wear ring (11), the outer abrasionproof in the one side of connection hose (4)
The equal semicircular in shape in cross section of ring (9) and interior anti-wear ring (11) is damaged, outer anti-wear ring (9) setting is in the outer of connection hose (4)
Circle, inner ring of interior anti-wear ring (11) setting in connection hose (4).
9. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 1, it is characterised in that: the outer fixed ring
(5) it is connected with connection side (16) by being threadedly engaged at the outer ring far from tube head butt joint ring (10), connection side (16) is far from connection
Sealing ring (6) are reinforced in being integrally formed on one side for hose (4), and the reinforcement sealing ring (6) is annular in shape to be sealed in outer fixed ring (5)
One side far from tube head butt joint ring (10) reinforces the race diameter of the inner ring diameter greater than double-walled screwed pipe I(1) of sealing ring (6)
And it is less than the race diameter of rubber pressure ring (13).
10. the effective tube head docking facilities of a kind of double-walled screw thread according to claim 9, it is characterised in that: the reinforcement is close
Seal ring (6), which is fitted in the one side of rubber pressure ring (13), is fixed with rubber outer ring (18), and shape will in a ring for rubber outer ring (18)
Rubber pressure ring (13) and the sealing of connection side (16) contact position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254165.4A CN109854849B (en) | 2019-03-30 | Tube head butt joint device for double-wall threaded tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254165.4A CN109854849B (en) | 2019-03-30 | Tube head butt joint device for double-wall threaded tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109854849A true CN109854849A (en) | 2019-06-07 |
| CN109854849B CN109854849B (en) | 2024-06-04 |
Family
ID=
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360154A (en) * | 2019-08-09 | 2019-10-22 | 浙江绿美泵业有限公司 | A kind of immersible pump |
| CN111963803A (en) * | 2020-08-25 | 2020-11-20 | 浙江巨丰管业有限公司 | Central water distribution pipeline connecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1310513A (en) * | 1969-07-01 | 1973-03-21 | Btr Industries Ltd | Union for two pairs of ducts |
| CN1847713A (en) * | 2005-04-04 | 2006-10-18 | 株式会社电装 | Piping joint device and manufacturing method thereof |
| CN203202448U (en) * | 2013-04-26 | 2013-09-18 | 开平市顶尖管业有限公司 | Bathroom hose pipe |
| CN206449325U (en) * | 2017-02-07 | 2017-08-29 | 临沂会宝岭铁矿有限公司 | A kind of mine is installed by down-hole pipe |
| CN207213383U (en) * | 2017-08-30 | 2018-04-10 | 王祝女 | Sealing structure in concrete drain tile |
| CN208331515U (en) * | 2018-04-08 | 2019-01-04 | 成都阡陌九城网络科技有限公司 | A kind of petroleum pipeline anticreep box cupling bending welder |
| CN208401164U (en) * | 2018-06-12 | 2019-01-18 | 南京乐视通信技术有限公司 | The public coaxial wire jumper of slotting type 4/10ths. three fastly |
| CN208619900U (en) * | 2018-07-31 | 2019-03-19 | 玉环县金龙欧浴洁具有限公司 | A kind of German-style connector red copper bellows |
| CN209762520U (en) * | 2019-03-30 | 2019-12-10 | 贵州枫叶管业有限公司 | pipe head butt joint device for double-wall threaded pipe |
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1310513A (en) * | 1969-07-01 | 1973-03-21 | Btr Industries Ltd | Union for two pairs of ducts |
| CN1847713A (en) * | 2005-04-04 | 2006-10-18 | 株式会社电装 | Piping joint device and manufacturing method thereof |
| CN203202448U (en) * | 2013-04-26 | 2013-09-18 | 开平市顶尖管业有限公司 | Bathroom hose pipe |
| CN206449325U (en) * | 2017-02-07 | 2017-08-29 | 临沂会宝岭铁矿有限公司 | A kind of mine is installed by down-hole pipe |
| CN207213383U (en) * | 2017-08-30 | 2018-04-10 | 王祝女 | Sealing structure in concrete drain tile |
| CN208331515U (en) * | 2018-04-08 | 2019-01-04 | 成都阡陌九城网络科技有限公司 | A kind of petroleum pipeline anticreep box cupling bending welder |
| CN208401164U (en) * | 2018-06-12 | 2019-01-18 | 南京乐视通信技术有限公司 | The public coaxial wire jumper of slotting type 4/10ths. three fastly |
| CN208619900U (en) * | 2018-07-31 | 2019-03-19 | 玉环县金龙欧浴洁具有限公司 | A kind of German-style connector red copper bellows |
| CN209762520U (en) * | 2019-03-30 | 2019-12-10 | 贵州枫叶管业有限公司 | pipe head butt joint device for double-wall threaded pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360154A (en) * | 2019-08-09 | 2019-10-22 | 浙江绿美泵业有限公司 | A kind of immersible pump |
| CN111963803A (en) * | 2020-08-25 | 2020-11-20 | 浙江巨丰管业有限公司 | Central water distribution pipeline connecting device |
| CN111963803B (en) * | 2020-08-25 | 2021-12-28 | 日照源立泵业有限公司 | Central water distribution pipeline connecting device |
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