CN209881277U - Explosion-proof flexible connecting pipe of carbon steel joint - Google Patents
Explosion-proof flexible connecting pipe of carbon steel joint Download PDFInfo
- Publication number
- CN209881277U CN209881277U CN201920515998.7U CN201920515998U CN209881277U CN 209881277 U CN209881277 U CN 209881277U CN 201920515998 U CN201920515998 U CN 201920515998U CN 209881277 U CN209881277 U CN 209881277U
- Authority
- CN
- China
- Prior art keywords
- joint
- nut
- connecting pipe
- carbon steel
- explosion
- 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.)
- Expired - Fee Related
Links
Landscapes
- Joints Allowing Movement (AREA)
Abstract
The utility model provides an explosion-proof flexible connecting pipe of a carbon steel joint, which comprises a connecting pipe body, wherein the left end and the right end of the connecting pipe body are respectively connected with a left-turning joint and a right-turning joint; the left rotating joint and the left nut are integrally formed, the left end of the left nut is connected with the left outer joint, a clamping groove is formed in one end, connected with the left outer joint, of the left nut, a gasket is embedded into the clamping groove, and a protruding portion extending from a notch of the clamping groove to the axis direction of the left nut is arranged in the left nut; an annular groove is formed in the right end face of the left outer joint, the left side of the sealing rubber ring is bonded in the annular groove, the right side of the sealing rubber ring extends out of the annular groove and then abuts against the protruding portion, and the protruding portion can extrude the sealing rubber ring to deform towards the axis direction of the left nut; the right rotating joint and the right nut are integrally formed, and the right end of the right nut is in threaded connection with the right outer joint; the outer walls of the left end and the right end of the connecting pipe body are sleeved with a rubber skin and a carbon steel sleeve, and the carbon steel sleeve is tightly pressed on the rubber skin. The utility model discloses an explosion-proof performance is good, and the safety in utilization is high.
Description
Technical Field
The utility model belongs to the technical field of electrical connection spare, concretely relates to explosion-proof flexible connection pipe that carbon steel connects.
Background
The explosion-proof flexible connecting pipe is an inlet and outlet wire connecting piece of explosion-proof electrical equipment, is used for scenes needing bending installation, and is suitable for combustible dust environments and explosive mixture environments. The explosion-proof flexible connecting pipe comprises a bendable metal hose and movable joints which are arranged at two ends of the metal hose in a threaded manner, and because the explosion-proof environment has high requirement on the explosion-proof performance of the movable joints, the cable needs to be in strict sealing connection with the movable joints, and external dust and gas combustible gas are prevented from entering the space between the cable and the movable joints, so the explosion-proof effect of the flexible connecting pipe needs to be improved; on the other hand, after the cable is inserted into the connecting pipe, rigid friction is generated between the cable and the interior of the movable joint, the surface layer of the cable is easily abraded, and the use safety of the connecting pipe is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an explosion-proof flexible connection pipe that carbon steel connects, explosion-proof can be good, and the safety in utilization is high.
The utility model provides a following technical scheme:
an explosion-proof flexible connecting pipe of a carbon steel joint comprises a connecting pipe body, wherein the left end and the right end of the connecting pipe body are respectively in threaded connection with a left-turning joint and a right-turning joint, and the left-turning joint and the right-turning joint are made of carbon steel;
the left rotating joint and the left nut are integrally formed, the left end of the left nut is in threaded connection with the left outer joint, one end, connected with the left outer joint, of the left nut is provided with an annular clamping groove, the notch of the clamping groove faces to the left, the gasket is embedded into the clamping groove, and a protruding portion extending from the notch of the clamping groove to the axis direction of the left nut is arranged in the left nut; an annular groove for installing a sealing rubber ring is formed in the right end face of the left outer joint, the left side of the sealing rubber ring is bonded in the annular groove, the right side of the sealing rubber ring extends out of the annular groove and then abuts against a protruding portion, and the protruding portion can extrude the sealing rubber ring to deform towards the axis direction of the left nut; the inner wall of the left outer joint is provided with an explosion-proof thread;
the right rotating joint and the right nut are integrally formed, and the right end of the right nut is in threaded connection with the right outer joint; the inner wall of the right outer joint is also provided with an explosion-proof thread;
the outer walls of the left end and the right end of the connecting pipe body are respectively sleeved with a rubber sheet, the rubber sheet is sleeved with a carbon steel sleeve, the carbon steel sleeve is tightly pressed on the rubber sheet, and the rubber sheet seals a gap between the left-turning joint and the connecting pipe body.
Preferably, the end face of the boss extends towards the axial center of the left nut, and the thickness of the end face of the boss is smaller than the original thickness of the sealing rubber ring.
Preferably, the right end of the sealing rubber ring is formed with an arc-shaped wire inlet.
Preferably, the right end inner wall of the left-hand joint is provided with a guide part, and the thickness of the guide part is gradually increased from right to left.
Preferably, the outer walls of the left end and the right end of the connecting pipe body are respectively provided with a hoop buckle.
The utility model has the advantages that: the utility model has the advantages that the annular clamping groove is processed in the left nut, on one hand, the clamping groove is used for installing the gasket, and the connecting strength between the left nut and the left outer joint is increased; on the other hand the bellying that the draw-in groove department formed can extrude the sealing rubber circle, makes the sealing rubber circle warp to the axle center direction to press from both sides tight cable, need not peel the rubber skin of cable when consequently installing the cable, directly pass the sealing rubber circle with the cable, screw up left nut and left outer joint again, make the sealing rubber circle press from both sides tight cable, thereby reach explosion-proof requirement, this structure is more convenient than the installation of traditional product. After the sealing rubber ring clamps the cable, the cable surface layer is in flexible contact with the sealing rubber ring, and the rigid friction between the cable surface layer and the bulge part is avoided, so that the cable surface layer is prevented from being abraded by the bulge part, and the use safety of the connecting pipe is improved. The rubber skin and the carbon steel sleeve at the left end and the right end of the connecting pipe body are tightly pressed and seal a gap between the left rotary joint and the connecting pipe body, so that the installation air tightness of the end part of the connecting pipe is ensured.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention;
labeled as: 1. a connecting pipe body; 2. a left turn joint; 3. a right swivel joint; 4. a left nut; 5. a left outer joint; 6. explosion-proof screw threads; 7. a card slot; 8. a gasket; 9. a boss portion; 10. an annular groove; 11. sealing the rubber ring; 12. a wire inlet; 13. a guide section; 14. a right nut; 15. a right outer swivel joint; 16. a carbon steel sleeve; 17. rubber skin.
Detailed Description
As shown in fig. 1, an explosion-proof flexible connection pipe of a carbon steel joint comprises a connection pipe body 1, the connection pipe body 1 is a stainless steel corrugated pipe, inner threaded walls are respectively processed at the left end and the right end of the connection pipe body 1, a left-turning joint 2 and a right-turning joint 3 are respectively installed on the inner threaded walls of the connection pipe body 1, and the left-turning joint 2 and the right-turning joint 3 are made of carbon steel.
The left turn joint 2 and the left nut 4 are integrally formed, an internal thread is processed on the inner wall of the left end of the left nut 4, the right end of the left outer joint 5 is in threaded connection with the left end of the left nut 4, and an explosion-proof thread 6 is processed on the inner wall of the left outer joint 5. An annular clamping groove 7 is formed in the left nut 4, the notch of the clamping groove 7 faces the left, and a gasket 8 is embedded into the clamping groove 7. The left nut 4 is provided with a convex part 9 extending from the notch of the clamping groove 7 to the axial direction of the left nut 4. Be equipped with the annular groove 10 that is used for installing sealing rubber circle 11 on the right-hand member face of left side outer joint 5, sealing rubber circle 11 is the chloroprene rubber material, ageing-resistant performance is good, bonding in annular groove 10 in the left side of sealing rubber circle 11, butt bellying 9 behind the annular groove 10 is stretched out on sealing rubber circle 11's right side, when screwing up left nut 4, bellying 9 can left side extrusion sealing rubber circle 11, make it warp to the axle center direction, thereby press from both sides tightly and sealed cable, reach explosion-proof effect, at this moment, gasket 8 just in time supports the tip of left outer joint 5 tightly, the joint strength between left nut 4 and the left outer joint 5 has been increased. The end face of the boss 9 extends towards the axis of the left nut 4, that is, the end face thickness of the boss 9 is increased, the contact area between the end face of the boss 9 and the sealing rubber ring 11 is increased, and the extrusion effect of the boss 9 on the sealing rubber ring 11 is enhanced. The end surface thickness of the bulge part 9 is smaller than the original thickness of the sealing rubber ring 11, namely the sealing rubber ring 11 slightly protrudes out of the bulge part 9 towards the axis direction, so that the surface of the cable only contacts with the flexible rubber sealing ring 11, rigid friction is not easily generated between the cable and the bulge part 9 made of carbon steel, and the surface layer of the cable is protected from being abraded by the bulge part 9. The right end shaping of sealing rubber circle 11 has curved inlet 12, is convenient for quick to the cable threading.
Rubber skins 17 are respectively sleeved on the outer walls of the left end and the right end of the connecting pipe body 1, a stretched carbon steel sleeve 16 is sleeved on the rubber skins 17 and pressed by a hydraulic machine, the carbon steel sleeve 16 and the rubber skins 17 are compressed together and seal a gap between the left-turning joint/the right-turning joint and the connecting pipe body 1, and the installation air tightness of the connecting pipe is improved.
A guide part 13 is die-cast on the inner wall of the right end of the left-turning joint 2, and the thickness of the guide part 13 is gradually increased from right to left. The guide portion 13 is used for guiding the cable to rapidly pass through the left rotary joint 2, so that the installation process is more convenient.
The right rotary joint 3 and the right nut 14 are integrally formed, so that the number of parts is reduced, and the installation is quicker. The right end of the right nut 14 is in threaded connection with a right outer joint 15, and the inner wall of the right outer joint 15 is also provided with an explosion-proof thread 6.
The outer walls of the left end and the right end of the connecting pipe body 1 are respectively provided with the hoop buckles 16, the hoop buckles 16 tightly press the connecting pipe body 1 from the outside of the connecting pipe body 1, and the connecting pipe body 1 is more stable and reliable in connection with the left rotary joint 2 and the right rotary joint 3.
The installation method of the explosion-proof flexible connecting pipe comprises the following steps: install left outer joint 5 and left nut 4 earlier, promptly: the gasket 7 is embedded into the clamping groove 7 of the left nut 4, the left nut 4 and the left outer joint 5 are pre-tightened to prevent the left nut 4 and the left outer joint 5 from falling off, then the right end of the left outer joint 5 is screwed on the inner thread wall of the left end of the connecting pipe body 1, then the rubber skin 17 is sleeved on the left end of the connecting pipe body 1, and the carbon steel sleeve 16 is fastened on the rubber skin 17 by a hydraulic machine; the right outer joint 15 and the right nut 14 are screwed down and are arranged at the right end of the connecting pipe body 1, and then the right end is sleeved with a rubber skin and a carbon steel sleeve. Connect the joint of external equipment with right external joint 15, penetrate the cable in connecting pipe body 1 from right external joint 15, stretch out from left external joint 5, then screw up left nut 4, make its bellying 9 extrusion sealing rubber circle 11 left, make it warp, press from both sides tight cable until sealing rubber circle 11, gap between sealing cable and the connecting pipe, reach explosion-proof effect, at this moment, the right-hand member face of gasket 7 butt left external joint 5, joint strength and sealing performance between left external joint 5 and the left nut 4 have been increased.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The explosion-proof flexible connecting pipe of the carbon steel joint is characterized by comprising a connecting pipe body, wherein the left end and the right end of the connecting pipe body are respectively in threaded connection with a left-turn joint and a right-turn joint, and the left-turn joint and the right-turn joint are made of carbon steel;
the left rotating joint and the left nut are integrally formed, the left end of the left nut is in threaded connection with a left outer joint, an annular clamping groove is formed in the connecting end portion of the left nut and the left outer joint, the notch of the clamping groove faces to the left, a gasket is embedded into the clamping groove, and a protruding portion extending from the notch of the clamping groove to the axis direction of the left nut is arranged in the left nut; an annular groove for mounting a sealing rubber ring is formed in the right end face of the left outer joint, the left side of the sealing rubber ring is bonded in the annular groove, the right side of the sealing rubber ring extends out of the annular groove and then abuts against the protruding portion, and the protruding portion can extrude the sealing rubber ring to deform towards the axis direction of the left nut; explosion-proof threads are processed on the inner wall of the left outer joint;
the right rotating joint and the right nut are integrally formed, and the right end of the right nut is in threaded connection with the right outer joint; explosion-proof threads are also processed on the inner wall of the right outer joint;
the outer walls of the left end and the right end of the connecting pipe body are respectively sleeved with a rubber sheet, the rubber sheets are externally sleeved with carbon steel sleeves, and the carbon steel sleeves are tightly pressed on the rubber sheets.
2. An explosion-proof flexible connecting pipe of a carbon steel joint as set forth in claim 1, characterized in that the end face of said boss portion extends in the axial direction of said left nut, and the thickness of the end face of said boss portion is smaller than the original thickness of said sealing rubber ring.
3. An explosion-proof flexible connecting pipe of a carbon steel joint as set forth in claim 2, wherein an arc-shaped wire inlet is formed at the right end of said sealing rubber ring.
4. The explosion-proof flexible connecting pipe of the carbon steel joint as recited in claim 2 or 3, wherein a guide portion is provided on an inner wall of a right end of the left turn joint, and a thickness of the guide portion is gradually increased from right to left.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515998.7U CN209881277U (en) | 2019-04-16 | 2019-04-16 | Explosion-proof flexible connecting pipe of carbon steel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515998.7U CN209881277U (en) | 2019-04-16 | 2019-04-16 | Explosion-proof flexible connecting pipe of carbon steel joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209881277U true CN209881277U (en) | 2019-12-31 |
Family
ID=68960305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920515998.7U Expired - Fee Related CN209881277U (en) | 2019-04-16 | 2019-04-16 | Explosion-proof flexible connecting pipe of carbon steel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209881277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799723A (en) * | 2020-07-20 | 2020-10-20 | 沈小迪 | Electrical engineering cable protection device |
-
2019
- 2019-04-16 CN CN201920515998.7U patent/CN209881277U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799723A (en) * | 2020-07-20 | 2020-10-20 | 沈小迪 | Electrical engineering cable protection device |
| CN111799723B (en) * | 2020-07-20 | 2021-06-01 | 东台市飞凌电气设备有限公司 | Electrical engineering cable protection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101649937B (en) | Quick joint of corrugated pipe for gas | |
| CN209881277U (en) | Explosion-proof flexible connecting pipe of carbon steel joint | |
| CN215733320U (en) | Can dismantle outer wall electrical bushing horn mouth | |
| CN201502811U (en) | Gas corrugated pipe quick coupling | |
| CN209626934U (en) | A kind of cable seal special joint | |
| CN105006784B (en) | Corrugated flexible hose seal nipple | |
| CN204992511U (en) | Metric system cable water joint | |
| CN215410657U (en) | Air pipe joint with anti-falling function of elastic belt | |
| CN213271507U (en) | Explosion-proof flexible connecting pipe | |
| CN211624495U (en) | Combined quick-connection pipe fitting for PE pipe | |
| CN210106775U (en) | Stainless steel corrugated pipe with threaded connector for gas appliance | |
| CN206889892U (en) | Pipe joint | |
| CN206177122U (en) | Single tube journey floating head heat exchanger screw locking intussuseption material letter seal structure | |
| CN106032862A (en) | Pipeline sealing connecting device | |
| CN217108726U (en) | Pipeline mounting structure and pipeline system | |
| CN219420265U (en) | Novel cable sealing connection device | |
| CN212745432U (en) | Make things convenient for flange to take out flange mounting structure for air compressor machine of maintenance | |
| CN215891449U (en) | R744 high-pressure air conditioner hose assembly structure | |
| CN218236492U (en) | Water supply pipe | |
| CN211018166U (en) | Switch board business turn over line elastic sealing structure | |
| CN217815625U (en) | Saddle joint | |
| CN109424816A (en) | Shut-off valve | |
| CN212643852U (en) | Automobile air conditioner pipeline joint connection structure | |
| CN217463661U (en) | Threaded connector without winding sealing belt | |
| CN220268725U (en) | Bellows connection structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191231 Termination date: 20210416 |