CN112032449A - Double-wall corrugated pipe lip seal double-dovetail buckle connecting device - Google Patents
Double-wall corrugated pipe lip seal double-dovetail buckle connecting device Download PDFInfo
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- CN112032449A CN112032449A CN202010779115.0A CN202010779115A CN112032449A CN 112032449 A CN112032449 A CN 112032449A CN 202010779115 A CN202010779115 A CN 202010779115A CN 112032449 A CN112032449 A CN 112032449A
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- double
- half joint
- dovetail
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- corrugated pipe
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- 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
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/08—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
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- 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
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/12—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with additional locking means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
The invention discloses a double-wall corrugated pipe lip-shaped sealing double-dovetail buckle connecting device, which belongs to the field of urban and rural municipal building plastic pipes and comprises double-wall corrugated pipes, half joints, rubber sealing parts and buckle covers; the double-wall corrugated pipes are horizontally butted, butt joints of the double-wall corrugated pipes are taken as connecting and installing central lines, the top parts of the radial corrugated pipes at the connecting parts of the double-wall corrugated pipes are sealing positions of sealing rings, lip-shaped sealing rings of rubber sealing elements are in sealing fit with the top parts of the corrugated pipes, two dovetail buckle seats are respectively arranged at the front ends and the rear ends of the half joints, and buckle covers are in wedge-shaped connection with the buckle seats to realize double-dovetail buckle sealing connection of the double-wall corrugated; can be widely applied to the field of pipes.
Description
Technical Field
The invention belongs to the field of plastic pipes for urban and rural municipal buildings, and particularly relates to a connecting device for sealing a rain and sewage drainage double-wall corrugated pipe by adopting double dovetail buckles at the front end and the rear end of a half joint in horizontal butt joint.
Background
With the vigorous advance of urbanization construction, the technical innovation in the field of water supply and drainage is changing day by day. The existing rain and sewage drainage double-wall corrugated pipe connecting device is characterized in that according to a Polyethylene (PE) structure wall pipeline system for burying the ground, the first part is as follows: the regulations of the polyethylene double-wall corrugated pipe material GB/T19472.1-2004 adopt socket type connection, and have the defects that after foundation settlement, the socket connection part of the double-wall corrugated pipe can generate displacement and sealing failure, so that the leakage of the connection part of a pipe network is caused, and the environment is polluted. In addition, the connecting device adopts sleeve sealing, and the bolt steps are arranged on the outer side of the sleeve for fastening, so that the defects of high manufacturing cost, complex construction and installation process and long installation time are overcome, and the double-wall drainage corrugated pipe is not suitable for the current urban municipal construction and uses a large amount of double-wall drainage corrugated pipes with the diameter of more than 400 mm. Further disadvantages are: the discovery in actual engineering construction is maintained, and the sealing rubber circle needs the card in the seal groove, must expand the sealing washer earlier during the installation and just can put into the seal groove, and two rubber circles should consider reasons such as anticorrosive, and elastic deformation has certain limit, when expanding earlier then put into the seal groove again, has caused certain plastic deformation, leads to sealed effect to reduce, takes place the trouble of leaking easily. The invention needs to invent a novel horizontal butt-joint sealing connecting device for the drainage double-wall corrugated pipe, has lower manufacturing cost and saved installation time on the premise of ensuring reliable connection quality of the municipal rainwater and sewage drainage pipe network, and can also reduce the installation and maintenance cost and improve the economic benefit.
Disclosure of Invention
The invention provides a lip-sealing double-dovetail buckle connecting device for double-wall corrugated pipes, which aims to overcome the defects of the existing double-wall corrugated pipe connecting device.
A lip-sealing double-dovetail buckle connection device for double-wall corrugated pipes comprises a double-wall corrugated pipe, a half joint, a dovetail joint, a connecting rod and a connecting rod,
Rubber seals, snap caps; the double-wall corrugated pipe is smooth in inner wall, the corrugated groove is formed in the outer wall, and the top of the wave peak of the radial corrugated pipe at the connecting part of the double-wall corrugated pipe is a sealing position of the sealing ring; the front end and the rear end of the half joint are respectively provided with two dovetail buckling seats, and the buckling covers are in wedge-shaped matching and fastening connection with the buckling seats; the two dovetail buckle seats at the front end and the rear end are arranged on the same axis at intervals in a back-to-back mode, the dovetail buckle seats at the front end of the Haff section and the rear end of the Haff section are respectively two dovetail buckle seats opposite to each other in the wedge direction, the two dovetail buckle seats opposite to each other in the wedge direction mean that the wide ends of the dovetail buckle seats are symmetrically arranged opposite to each other at intervals, the narrow ends of the two dovetail buckle seats deviate from each other, the two dovetail buckle seats opposite to each other in the wedge direction at the front end of the Haff section and the rear end of the Haff section are arranged on the same axis, and a spacing distance exists between the two dovetail buckle seats opposite to each other in the wedge direction; the inner wall of the half joint is provided with an arc-shaped groove and a rectangular groove; the half joint is semicircular, and the outer wall of the half joint is smooth; the upper half joint and the lower half joint are respectively symmetrically provided with half double-dovetail buckling seats, the half joint is formed by symmetrically arranging and installing the upper half joint and the lower half joint, the front end and the rear end of the upper half joint and the rear end of the lower half joint are respectively provided with two half double-dovetail buckling seats, and the upper half joint and the lower half joint are combined into two complete buckling seats at the front end and the rear end after being arranged and formed; the dovetail buckle cover of the half joint is in wedge-shaped fastening connection with the double dovetail buckle seats of the half joint; an arc-shaped groove and a rectangular groove are formed in the inner wall of the half joint, the arc-shaped groove is matched with the corrugated wave shape of the outer wall of the double-wall corrugated pipe, and the rectangular groove is matched with the rubber sealing piece in an embedded mode; the rubber sealing element consists of a radial lip-shaped sealing ring and an axial sealing strip; the radial lip-shaped sealing ring is a semicircular lip-shaped sealing ring, and two ends of the semicircular lip-shaped sealing ring are connected with the axial sealing strip into a whole; the double-wall corrugated pipe lip-sealing double-dovetail buckle connecting device is characterized in that a left double-wall corrugated pipe port is horizontally butted with a right double-wall corrugated pipe port, a double-wall corrugated pipe butt joint seam is used as an installation central line of the lip-sealing double-dovetail buckle connecting device, a rubber sealing element is arranged between the outer wall of a double-wall corrugated pipe and the inner wall of a half joint, an arc-shaped groove and a rectangular groove are formed in the inner wall of the half joint, the arc-shaped groove is matched with the double-wall corrugated pipe in a wave form, the rectangular groove is matched with the rubber sealing element in an embedded mode, the half joint is formed by symmetrically arranging and installing an upper half joint and a lower half joint, the half joint is provided with a double-dovetail buckle seat, a dovetail buckle cover is in wedge-shaped connection with the double-dovetail buckle seat on.
The radial lip-shaped sealing ring is provided with more than two sealing rings, and the cross section of each sealing ring is in the shape as follows: the contact surface of the top of the wave peak at the connecting part of the corrugated pipe is lip-shaped; the axial sealing strips are two parallel sealing strips.
A radial lip-shaped sealing ring of a rubber sealing element is arranged between the sealing position of the radial top of the double-wall corrugated pipe and the rectangular groove of the half joint, and the lip-shaped sealing ring of the rubber sealing element is in sealing fit with the top of the corrugated pipe.
The radial lip-shaped sealing ring of the rubber sealing element is in interference fit with the rectangular groove of the half joint.
Steps are arranged on two sides of the half joint, an axial groove is arranged on each step, and an axial sealing strip of a rubber sealing element is placed in each axial groove; the fit of the axial groove and the axial sealing strip is interference fit.
The rectangular groove of the half joint is provided with a radial sealing ring of a rubber sealing element, and the radial sealing ring is used as a male ring of the double-wall corrugated pipe
When the diameters are 400 mm, 500 mm and 600 mm, 4-6 arc grooves and 2 rectangular grooves are arranged on the inner wall of the half joint, and 4-6 radial sealing rings are correspondingly arranged on the rubber sealing element.
The connecting and mounting process method of the double-wall corrugated pipe lip-shaped sealing double-dovetail buckle connecting device comprises the following steps:
checking the butt joint place of the double-wall corrugated pipe, and conforming to the installation requirement; horizontally aligning two double-wall corrugated pipes in a straight line, and horizontally butting the port of the left double-wall corrugated pipe with the port of the right double-wall corrugated pipe;
embedding two rubber sealing elements into the rectangular grooves on the inner walls of the upper half joint and the lower half joint and the axial grooves of the steps on two sides of the half joint respectively;
installing the half joints, wherein the double-wall corrugated pipe butt joints are used as the assembling symmetrical center lines of the upper half joint and the lower half joint, the half joints are symmetrical left and right, the axis of the double-wall corrugated pipe is used as the assembling horizontal line of the upper half joint and the lower half joint, the half joints are symmetrical up and down, and the dovetail buckle seats are adjusted to meet the installation requirement;
installing a dovetail buckle cover on the buckle seat, axially pushing and fastening the dovetail buckle cover, and tightly connecting an upper half joint and a lower half joint to realize the horizontal butt joint buckle sealing connection of the port of the left double-wall corrugated pipe and the port of the right double-wall corrugated pipe;
and checking the connection installation process according to the installation construction requirements again, meeting the requirements and passing the acceptance.
The noun defines:
level: a plane parallel to the horizontal plane of the earth.
Left: the left side, defined as facing the horizontally disposed double-walled bellows lip seal double dovetail snap connection, is left.
And (3) right: the right side, facing the horizontally placed double-walled bellows lip seal double dovetail snap connection, is defined as the right.
The method comprises the following steps: the plane parallel to the earth's horizontal plane is vertically upward, and faces the upper edge of the horizontally placed double-wall corrugated pipe lip-shaped sealing double-dovetail buckle connecting device, and the plane is defined as the upper part.
The following: the plane parallel to the earth's horizontal plane is vertically downward and faces the lower edge of the horizontally placed double-wall corrugated pipe lip-seal double-dovetail buckle connection device, and the lower edge is defined as the lower part.
Axial direction: the central axis of the double-wall corrugated pipe is axial and is parallel to the horizontal line, and the axial direction is defined.
Radial: the radial direction of the double-wall corrugated pipe is perpendicular to the axial direction of the double-wall corrugated pipe and is defined as the radial direction.
Side surface: the double-wall corrugated pipe lip-seal double-dovetail buckle connecting device which is horizontally arranged is faced with a left port side face and a right port side face respectively.
Front end: the front end of the plane parallel to the horizontal plane of the earth is defined as the front end.
A rear end: the planar back end, which is parallel to the horizontal plane of the earth, is defined as the back end.
Double-wall corrugated pipe: the double-wall corrugated pipe is characterized in that the inner wall is smooth, equidistant ripples are arranged on the outer wall, a ripple groove is formed between the ripples, and the bottom is a flat bottom; the double-wall corrugated pipe connection is that the ports of a left double-wall corrugated pipe and a right double-wall corrugated pipe which have the same specification and model are horizontally butted and connected.
A half joint: is a Hough section specially used for connecting double-wall corrugated pipes; the half joint consists of a semicircular upper half joint and a semicircular lower half joint, the upper half joint and the lower half joint are parts with the same specification and model, and are only installed at different positions in the installation process, namely, the upper half joint and the lower half joint are installed symmetrically up and down, and the upper half joint and the lower half joint are fastened by adopting a dovetail buckle cover; the outer wall of the half joint is smooth, and the inner wall of the half joint is provided with an arc groove and a rectangular groove.
Rubber sealing element: the rubber sealing element consists of a semicircular radial sealing ring and an axial sealing strip, the shape of the semicircular radial sealing ring of the rubber sealing element is matched with the top of the double-wall corrugated pipe in a sealing manner, the shape of the semicircular radial sealing ring of the rubber sealing element is matched with the rectangular groove in the inner wall of the half joint in an embedded manner, and the axial sealing strip is matched with the axial groove on the step of the half joint in an embedded manner.
The invention discloses a double-wall corrugated pipe lip-seal double-dovetail buckle connecting device which has the remarkable characteristics and technical progress that: the technical route is that a half joint is installed, two dovetail buckling seats opposite in wedge direction are respectively arranged at the front end of the half joint and the rear end of the half joint, the two dovetail buckling seats opposite in wedge direction are opposite in wide end, the narrow ends of the dovetail buckling seats deviate, the two dovetail buckling seats opposite in wedge direction at the front end of the half joint and the rear end of the half joint are located on the same axis, and a space distance is reserved between the two dovetail buckling seats opposite in wedge direction; the dovetail buckle cover of the half joint is in wedge-shaped fastening connection with the double dovetail buckle seats of the half joint; the dovetail buckle seat and the buckle cover are arranged on two sides of the half joint, a rubber sealing element is arranged between the outer wall of the double-wall corrugated pipe and the inner wall of the half joint, a semicircular radial sealing ring of the rubber sealing element ensures radial sealing, an axial sealing strip of the rubber sealing element ensures axial sealing, and the half joint is quickly fastened and connected through the dovetail buckle cover; the technical purpose is realized by ensuring that the port of the left double-wall corrugated pipe is horizontally aligned with the port of the right double-wall corrugated pipe and is in sealed connection with the buckle, and under the premise of ensuring sealing, the double-wall corrugated pipe also has the function of firm connection and falling prevention; the pipe connection is reliable and firm, the manufacturing cost is lower, the installation is convenient, the operation is simple, the time is saved, the transportation cost is lower, the maintenance cost is lower, and the economic benefit is improved.
Drawings
FIG. 1 is a schematic view of a double-wall bellows lip seal double dovetail snap connection installation.
FIG. 2 is a schematic diagram of an upper half joint or a lower half joint of a double-wall corrugated pipe lip seal double-dovetail buckle connecting device.
FIG. 3 is a schematic view of the upper or lower rubber seal of a double wall bellows lip seal double dovetail snap connection.
FIG. 4 is a schematic view of a double wall bellows lip seal double dovetail snap connection snap cap.
In the figure: the double-wall corrugated pipe comprises a double-wall corrugated pipe 1, a left double-wall corrugated pipe 1, a right double-wall corrugated pipe 1, a half joint 2, an upper half joint 2, a lower half joint 2, a rubber sealing element 3, an upper rubber sealing element 3, a lower rubber sealing element 3 and a dovetail buckle cover 4.
Detailed Description
This patent is practiced at a construction site or workshop where a double wall bellows lip seal double dovetail snap connection is required.
The first embodiment,
The double-wall corrugated pipe lip-shaped sealing double-dovetail buckle connecting device comprises a double-wall corrugated pipe 1, a half joint 2, a rubber sealing element 3 and a dovetail buckle cover 4; the double-wall corrugated pipe lip-sealing double-dovetail buckle connecting device is characterized in that a left double-wall corrugated pipe port 1 and a right double-wall corrugated pipe port 1 are horizontally butted, a half joint 2 is installed by taking a butt joint seam as an installation central line, dovetail buckle seats are arranged on two sides of the half joint 2, the half joint 2 is composed of an upper half joint 2 and a lower half joint 2, the upper half joint 2 and the lower half joint 2 are arranged on the outer wall of the double-wall corrugated pipe 1, a rubber sealing element 3 is installed between the outer wall of the double-wall corrugated pipe 1 and the inner wall of the half joint 2, the half joint 2 is tightly connected through a dovetail buckle cover 4, and the left port of the left double-wall corrugated pipe 1 is horizontally butted, buckled and sealed with the right port of the right double-wall corrugated pipe 1.
The matching of the rubber sealing piece 3 and the half joint 2, and the rubber sealing piece 3 and the double-wall corrugated pipe 1
Are interference fit.
When the nominal diameter of the double-wall corrugated pipe 1 is 400 mm, 4 arc-shaped grooves are arranged on the inner wall of the half joint 2
And 2 rectangular grooves, and 4 radial sealing rings are correspondingly arranged on the rubber sealing element 3.
Example II,
When the nominal diameter of the double-wall corrugated pipe is 500 mm, 4 arc-shaped grooves are arranged on the inner wall of the half joint 2
And 2 rectangular grooves, and 4 radial sealing rings are correspondingly arranged on the rubber sealing element 3.
Example III,
When the nominal diameter of the double-wall corrugated pipe is 600 mm, 6 arc-shaped grooves are arranged on the inner wall of the half joint 2
And 2 rectangular grooves, and 6 radial sealing rings are correspondingly arranged on the rubber sealing element 3.
Claims (7)
1. The utility model provides a double-walled bellows lip seal double-forked tail buckle connecting device which characterized in that: comprising double-walled corrugations
The pipe, the half joint, the rubber sealing element and the buckle cover; the double-wall corrugated pipe is smooth in inner wall, the corrugated groove is formed in the outer wall, and the top of the wave peak of the radial corrugated pipe at the connecting part of the double-wall corrugated pipe is a sealing position of the sealing ring; the front end and the rear end of the half joint are respectively provided with two dovetail buckling seats, and the buckling covers are in wedge-shaped matching and fastening connection with the buckling seats; the two dovetail buckle seats at the front end and the rear end are arranged on the same axis at intervals in a back-to-back mode, the dovetail buckle seats at the front end of the Haff section and the rear end of the Haff section are respectively two dovetail buckle seats opposite to each other in the wedge direction, the two dovetail buckle seats opposite to each other in the wedge direction mean that the wide ends of the dovetail buckle seats are symmetrically arranged opposite to each other at intervals, the narrow ends of the two dovetail buckle seats deviate from each other, the two dovetail buckle seats opposite to each other in the wedge direction at the front end of the Haff section and the rear end of the Haff section are arranged on the same axis, and a spacing distance exists between the two dovetail buckle seats opposite to each other in the wedge direction; the inner wall of the half joint is provided with an arc-shaped groove and a rectangular groove; the half joint is semicircular, and the outer wall of the half joint is smooth; the upper half joint and the lower half joint are respectively symmetrically provided with half double-dovetail buckling seats, the half joint is formed by symmetrically arranging and installing the upper half joint and the lower half joint, the front end and the rear end of the upper half joint and the rear end of the lower half joint are respectively provided with two half double-dovetail buckling seats, and the upper half joint and the lower half joint are combined into two complete buckling seats at the front end and the rear end after being arranged and formed; the dovetail buckle cover of the half joint is in wedge-shaped connection with the double dovetail buckle seats of the half joint; an arc-shaped groove and a rectangular groove are formed in the inner wall of the half joint, the arc-shaped groove is matched with the corrugated wave shape of the outer wall of the double-wall corrugated pipe, and the rectangular groove is matched with the rubber sealing piece in an embedded mode; the rubber sealing element consists of a radial lip-shaped sealing ring and an axial sealing strip; the radial lip-shaped sealing ring is a semicircular lip-shaped sealing ring, and two ends of the semicircular lip-shaped sealing ring are connected with the axial sealing strip into a whole; the double-wall corrugated pipe lip-sealing double-dovetail buckle connecting device is characterized in that a left double-wall corrugated pipe port is horizontally butted with a right double-wall corrugated pipe port, a double-wall corrugated pipe butt joint seam is used as an installation central line of the lip-sealing double-dovetail buckle connecting device, a rubber sealing element is arranged between the outer wall of a double-wall corrugated pipe and the inner wall of a half joint, an arc-shaped groove and a rectangular groove are formed in the inner wall of the half joint, the arc-shaped groove is matched with the double-wall corrugated pipe in a wave form, the rectangular groove is matched with the rubber sealing element in an embedded mode, the half joint is formed by symmetrically arranging and installing an upper half joint and a lower half joint, the half joint is provided with a double-dovetail buckle seat, a dovetail buckle cover is in wedge-shaped connection with the double-dovetail buckle seat on.
2. The double-walled bellows lip seal double-dovetail snap-fit connection of claim 1, wherein:
the radial lip-shaped sealing ring is provided with more than two sealing rings, and the cross section of each sealing ring is in the shape as follows: the edge contacted with the top of the wave crest at the connecting part of the corrugated pipe is lip-shaped; the axial sealing strips are two parallel sealing strips.
3. The double-walled bellows lip seal double-dovetail snap-fit connection of claim 1, wherein:
a radial lip-shaped sealing ring of a rubber sealing element is arranged between the sealing position of the radial top of the double-wall corrugated pipe and the rectangular groove of the half joint, and the lip-shaped sealing ring of the rubber sealing element is in sealing fit with the top of the corrugated pipe.
4. The double-walled bellows lip seal double-dovetail snap-fit connection of claim 1, wherein:
the radial lip-shaped sealing ring of the rubber sealing element is in interference fit with the rectangular groove of the half joint.
5. The double-walled bellows lip seal double-dovetail snap-fit connection of claim 1, wherein:
steps are arranged on two sides of the half joint, an axial groove is arranged on each step, and an axial sealing strip of a rubber sealing element is placed in each axial groove; the fit of the axial groove and the axial sealing strip is interference fit.
6. The double-wall bellows lip seal double-dovetail snap-fit connection of claim 1, wherein: the above-mentioned
The rectangular groove of the half joint is provided with a radial sealing ring of a rubber sealing element, when the nominal diameter of the double-wall corrugated pipe is 400 mm, 500 mm and 600 mm, the inner wall of the half joint is provided with 4-6 arc-shaped grooves and 2 rectangular grooves, and the rubber sealing element is correspondingly provided with 4-6 radial sealing rings.
7. The double-wall bellows lip seal double-dovetail snap-fit connection of claim 1, wherein: the cross section of the radial sealing ring has the following shapes: the contact surface of the top of the wave crest at the connecting part of the radial sealing ring and the corrugated pipe is lip-shaped, and the radial sealing ring is tightly matched and contacted with the top of the wave crest of the corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010779115.0A CN112032449A (en) | 2020-08-05 | 2020-08-05 | Double-wall corrugated pipe lip seal double-dovetail buckle connecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010779115.0A CN112032449A (en) | 2020-08-05 | 2020-08-05 | Double-wall corrugated pipe lip seal double-dovetail buckle connecting device |
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| CN112032449A true CN112032449A (en) | 2020-12-04 |
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| CN202010779115.0A Pending CN112032449A (en) | 2020-08-05 | 2020-08-05 | Double-wall corrugated pipe lip seal double-dovetail buckle connecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513644A (en) * | 2021-08-10 | 2021-10-19 | 安徽安塑管业有限公司 | Seagull-shaped composite leakage-proof anti-drop alloy pipe connecting device |
-
2020
- 2020-08-05 CN CN202010779115.0A patent/CN112032449A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513644A (en) * | 2021-08-10 | 2021-10-19 | 安徽安塑管业有限公司 | Seagull-shaped composite leakage-proof anti-drop alloy pipe connecting device |
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