CN209977484U - Stainless steel explosion-proof flexible connection pipe with strong solidity - Google Patents

Stainless steel explosion-proof flexible connection pipe with strong solidity Download PDF

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Publication number
CN209977484U
CN209977484U CN201920577088.1U CN201920577088U CN209977484U CN 209977484 U CN209977484 U CN 209977484U CN 201920577088 U CN201920577088 U CN 201920577088U CN 209977484 U CN209977484 U CN 209977484U
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CN
China
Prior art keywords
nut
stainless steel
fastening
sleeve
carbon steel
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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
Application number
CN201920577088.1U
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Chinese (zh)
Inventor
苏清明
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Suzhou Su Da Explosion Proof Equipment Co Ltd
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Suzhou Su Da Explosion Proof Equipment Co Ltd
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Filing date
Publication date
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Priority to CN201920577088.1U priority Critical patent/CN209977484U/en
Application granted granted Critical
Publication of CN209977484U publication Critical patent/CN209977484U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides an explosion-proof flexible connection pipe of stainless steel of strong solidity, including nonrust corrugated steel pipe, nonrust corrugated steel pipe's both ends opening part has cup jointed sealing rubber respectively, and sealing rubber has still cup jointed carbon steel metal covering outward, and the tip that is located the carbon steel metal covering of nonrust corrugated steel pipe opening part forms along the circumference protrusion in the knot splenium of carbon steel metal covering body lateral wall, fastening nut has still cup jointed outward to the carbon steel metal covering, fastening nut is equipped with the internal thread, and fastening nut has the external joint through female connection, and fastening nut's one end forms to overlap on the carbon steel metal covering body with detain splenium matched with backstop portion, and fastening nut compresses tightly the external joint on the terminal surface of carbon steel metal covering through backstop portion and the cooperation of detaining the splenium under the effect of. The utility model discloses a withhold technology and form, guarantee to withhold the back and leak not airtightly, can improve the fastening nature of being connected with the outer pipe moreover through the outer joint at both ends.

Description

Stainless steel explosion-proof flexible connection pipe with strong solidity
Technical Field
The utility model particularly relates to a stainless steel explosion-proof flexible connection pipe of strong solidity.
Background
The explosion-proof flexible pipe has the advantages of flame resistance, oil resistance, corrosion resistance, water resistance, wear resistance, aging resistance, good flexibility, firm structure, reliable work and the like, is widely applied to places with explosive mixtures, is used as explosion-proof electrical equipment on an electric wire laying pipeline, is used as a connecting line pipe with vibration or bending equipment, and is used for the connection of an inlet wire and an outlet wire of the explosion-proof electrical equipment or the connection of places with great difficulty in bending steel pipe wiring. The two ends of the hose of the explosion-proof flexible pipe structure are provided with metal thread movable joints, and the pipe body part consists of metal hoses. The traditional stainless steel explosion-proof flexible pipe is welded, the welding surface is rough, and sometimes air holes can leak air when the welding is not good. Polishing is also time consuming, expensive and inefficient.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an explosion-proof flexible connection pipe of stainless steel of strong solidity adopts and withholds the technology and form, guarantees not to leak gas after withholding, can improve the fastening nature of being connected with the outer pipe moreover through the outer joint at both ends.
The utility model adopts the following technical scheme:
the utility model provides an explosion-proof flexible connection pipe of stainless steel of strong solidity, includes stainless steel corrugated pipe, sealing rubber has been cup jointed respectively to stainless steel corrugated pipe's both ends opening part, and sealing rubber has still cup jointed the carbon steel metal covering outward, and the tip that is located the carbon steel metal covering of stainless steel corrugated pipe opening part forms along the withholding portion of circumference protrusion in carbon steel metal covering body lateral wall, fastening nut has still cup jointed outward to the carbon steel metal covering, and the one end of the fastening nut who overlaps on the carbon steel metal covering forms and withholds splenium matched with backstop portion, fastening nut's the other end is equipped with the internal thread, and fastening nut has the external joint through female connection, and fastening nut compresses tightly the external joint on the terminal surface of carbon steel metal covering through the cooperation of backstop portion and withholding.
Preferably, the end part of the carbon steel metal sleeve located at the buckling part is further provided with an extending end face extending inwards in the radial direction, and the outer joint is pressed on the extending end face.
Preferably, a lead pad is further arranged between the outer joint and the extending end face.
Preferably, the sealing rubber comprises a sealing rubber body and an extension part located at one end of the sealing rubber body and extending inwards in the radial direction, the sealing rubber body is compressed between the outer wall of the stainless steel corrugation and the inner wall of the carbon steel metal sleeve, and the extension part is compressed between the inner side of the extending end face and the end face of the stainless steel corrugated pipe.
Preferably, the outer joint includes outer joint body and elastic metal arm, outer joint body and fastening nut threaded connection, external mounting hole has been seted up along the axial in the outer joint body, elastic metal arm along circumference evenly distributed in the one end of outer joint body, this external adapter still cup joints the adapter sleeve that sets up along the axial activity of outer joint body outward, and the adapter sleeve can order about the elastic metal arm when axial displacement and outwards connect the inboard shrink of mounting hole, and when the elastic metal arm was to the inboard shrink, the adapter sleeve can with the outer joint body between fixed connection.
Preferably, the outer joint body includes sliding part and locking part, is equipped with the external screw thread that the diameter is less than the sliding part body on the sliding part, and the sliding part passes through external screw thread and fastening nut threaded connection, is equipped with the accommodation hole that runs through the lateral wall on the outer joint body between sliding part and the locking part, and on the one side inner wall of accommodation hole was fixed in to the one end of elastic metal arm, left the clearance between the other end of elastic metal arm and the opposite side inner wall of accommodation hole, the one end of adapter sleeve cup jointed on the sliding part, the other end of adapter sleeve has cup jointed locking nut, and locking nut rotates on the adapter sleeve, and threaded connection between locking nut and the locking part drives the adapter sleeve along the axial slip of sliding part under the effect of screw thread.
Preferably, the locking nut includes the nut body and outstanding in the lateral wall of nut body and distributes in the handle portion at nut body both ends and the portion of stopping taking off, the nut body overlaps in locking portion and with locking portion threaded connection, the external diameter of the portion of stopping taking off is greater than the internal diameter of adapter sleeve, is equipped with on the terminal surface of adapter sleeve and holds the chamber, the portion of stopping taking off rotates in holding the intracavity through the bearing, the adapter sleeve is still threaded connection outward has backstop nut, the one end of backstop nut is equipped with along the radial backstop ring that the portion of preventing stopping taking off from holding the intracavity that extends to the inboard.
Preferably, there are backstop blocks along circumference evenly distributed on the inner wall of backstop ring, backstop nut will stop the portion of taking off and compress tightly in holding the intracavity through backstop block under the effect of screw thread, be equipped with on the periphery of handle portion along the axial run-through respectively with backstop block matched with breach, backstop block can pass through the axial displacement of locking nut is followed to the breach.
Preferably, the diameter of locking portion is greater than the diameter of sliding part, the outer joint body is still including connecting the round platform portion between sliding part and locking portion, and the accommodation hole is seted up on the lateral wall of round platform portion, the accommodation hole extends to locking portion from the sliding part along the axial of outer joint body, the one end and the sliding part fixed connection of elastic metal arm, leave the clearance between the other end of elastic metal arm and the locking portion, be equipped with the promotion piece that can contact with the elastic metal arm respectively on the inner wall of adapter sleeve, the adapter sleeve orders about the elastic metal arm through promoting the piece and outwards connects the inboard shrink of mounting hole.
Preferably, the surface of the elastic metal arm is an inclined plane matched with the circular truncated cone part, the surface of the pushing block, which is in contact with the elastic metal arm, is a coupling surface matched with the inclined plane, and the slope of the coupling surface is smaller than that of the inclined plane.
The utility model has the advantages that:
(1) the utility model is formed by adopting a buckling and pressing process in the manufacturing process, the stainless steel corrugation is sleeved with the silica gel rubber, the stretched stainless steel sleeve is sleeved and pressed by the hydraulic machine, the tightness after buckling and pressing is ensured, and the connection tightness between the stainless steel corrugated pipe and the carbon steel metal sleeve is improved;
(2) the utility model discloses an when the outer joint at both ends was managed with the external, can order about the elastic metal arm along axial displacement through the adapter sleeve and outwards connect the inboard shrink of mounting hole, will manage the centre gripping externally fixed, improve the outer joint at both ends and manage the fastening nature of being connected between the external.
Drawings
The accompanying drawings are included to provide a preferred understanding of the present 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 principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the joint at two ends of the stainless steel corrugated pipe of the present invention;
FIG. 2 is an enlarged view of the joint of the fastening nut at the opening at one end of the corrugated stainless steel pipe in FIG. 1;
FIG. 3 is an overall schematic view of the stainless steel bellows with external joints mounted at both ends;
FIG. 4 is an enlarged view of an external joint at one end of the corrugated stainless steel tubing of FIG. 3;
FIG. 5 is an enlarged schematic view of the stop nut connection of FIG. 4;
FIG. 6 is a perspective view of the external joint of the present invention;
fig. 7 is a schematic perspective view of the joint between the lock nut and the stop nut of the present invention;
fig. 8 is an exploded view of fig. 7.
Labeled as: 1. a stainless steel bellows; 2. sealing rubber; 3. a carbon steel metal sheath; 4. a buckling part; 5. fastening a nut; 6. an outer joint; 7. a stopper portion; 8. an extended end surface; 9. a lead pad; 10. sealing the rubber body; 11. an extension portion; 12. a resilient metal arm; 13. the outer connection of the mounting hole; 14. fastening sleeves; 15. a sliding part; 16. a lock section; 17. an accommodation hole; 18. a lock nut; 19. a nut body; 20. a handle portion; 21. a slip-off preventing part; 22. a bearing; 23. a stop nut; 24. a stop ring; 25. a stop block; 26. a notch; 27. a circular table portion; 28. a pushing block; 29. a bevel; 30. a coupling surface.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 2, for the embodiment of the stainless steel explosion-proof flexible connection pipe with strong solidity of the present invention, including a stainless steel corrugated pipe 1, sealing rubber 2 is respectively sleeved at the openings of the two ends of the stainless steel corrugated pipe 1, a carbon steel metal sleeve 3 is further sleeved outside the sealing rubber 2, the manufacturing process is performed by adopting a buckling process, the sealing rubber 2 is respectively sleeved at the two ends of the stainless steel corrugated pipe 1, the stretched carbon steel metal sleeve 3 is sleeved outside the sealing rubber 2, the end of the carbon steel metal sleeve 3 is pressed by a hydraulic press, so as to ensure that no air leakage occurs after the buckling between the stainless steel corrugated pipe 1 and the carbon steel metal sleeve 3, and the buckling connection is firm;
in the buckling process, a buckling part 4 protruding out of the side wall of the carbon steel metal sleeve 3 body along the circumferential direction is formed at the end part of the carbon steel metal sleeve 3, an extending end face 8 extending inwards along the radial direction is further arranged at the end part of the buckling part 4 of the carbon steel metal sleeve 3, a fastening nut 5 is further sleeved outside the carbon steel metal sleeve 3, a stopping part 7 matched with the buckling part 4 is formed at one end of the fastening nut 5 sleeved on the carbon steel metal sleeve 3, internal threads are formed at the other end of the fastening nut 5, the fastening nut 5 is connected with an external connector 6 through the internal threads, the external connector 6 is firstly installed in the fastening nut 5, then the fastening nut 5 is rotated, the external connector 6 moves towards the fastening nut 5 under the action of the threads, and the external connector 6 is tightly pressed on the extending end face 8 of the carbon steel metal sleeve 3 under the; wherein a lead pad 9 is arranged between the external joint 6 and the extension end face 8; the connection and fixation between the external joint and the stainless steel corrugated pipe 1 are better;
the sealing rubber 2 comprises a sealing rubber body 10 and an extending part 11 located at one end of the sealing rubber body 10 and extending inwards in the radial direction, the sealing rubber body 10 is tightly pressed between the outer wall of the stainless steel corrugated pipe 1 and the inner wall of the carbon steel metal sleeve 3, and the extending part 11 is tightly pressed between the inner side of the extending end face 8 and the end face of the stainless steel corrugated pipe 1, so that the stainless steel corrugated pipe 1 and the carbon steel metal sleeve 3 are buckled and pressed to ensure that air is not leaked.
As shown in fig. 3 to 8, in another embodiment of the present invention, the outer joint 6 is composed of a sliding part 15, a locking part 16, a circular table part 27 and an elastic metal arm 12, the outer joint body is provided with an outer mounting hole 13 along the axial direction, the sliding part 15 can form an inner thread or an outer thread in the outer mounting hole 13 for adapting to different external pipe installation, the circular table part 27 is connected between the sliding part 15 and the locking part 16, the sliding part 15 is provided with an outer thread having a diameter smaller than that of the sliding part body, the sliding part 15 is in threaded connection with the fastening nut 5 through the outer thread, the locking part 16 has a diameter larger than that of the sliding part 15, the circular table part 27 is provided with receiving holes 17 on the side wall thereof communicating with the outer mounting hole 13, the receiving holes 17 are uniformly distributed along the circumferential direction, the receiving holes 17 extend from the sliding part 15 to the locking part 16 along the axial direction of the outer joint body, the receiving holes 17, one end of the elastic metal arm 12 is fixedly connected with the sliding part 15, a gap is reserved between the other end of the elastic metal arm 12 and the locking part 16, and the gap is used for the elastic metal arm 12 to contract and deform towards the inside of the external installation hole 13;
the outer joint 6 is also sleeved with a fastening sleeve 14 which is movably arranged along the axial direction of the outer joint 6, one end of the fastening sleeve 14 is sleeved on the sliding part 15, the other end of the fastening sleeve 14 is sleeved with a locking nut 18, the locking nut 18 rotates on the fastening sleeve 14, the locking nut 18 is in threaded connection with the locking part 16, the locking nut 18 rotates on the locking part 16, and the locking nut 18 drives the fastening sleeve 14 to slide along the axial direction of the sliding part 15 under the action of threads; and the inner wall of the adapter sleeve 14 is provided with a pushing block 28 which can be respectively contacted with the elastic metal arm 12, when the adapter sleeve 14 slides along the axial direction of the sliding part 15, the elastic metal arm 12 is driven to contract towards the inner side of the external mounting hole 13 through the pushing block 28, so that an external pipe arranged on the external joint 6 is clamped and fixed, and the connection fixity between the external joint 6 and the external pipe is improved.
The outer surface of the elastic metal arm 12 is an inclined surface 29 matched with the circular table portion 27, the surface of the pushing block 28 contacting with the elastic metal arm 12 is a coupling surface 30 matched with the inclined surface 29, the slope of the coupling surface 30 is smaller than that of the inclined surface 29, and in the process that the fastening sleeve 14 slides along the axial direction of the sliding portion 15, the elastic metal arm 12 can be better pushed to contract towards the inner side of the external mounting hole 13 through the matching of the coupling surface 30 and the inclined surface 29.
Specifically, the locking nut 18 comprises a nut body 19, a handle part 20 and a disengagement preventing part 21, wherein the handle part 20 and the disengagement preventing part 21 protrude out of the side wall of the nut body 19 and are distributed at two ends of the nut body 19, the nut body 19 is sleeved on the locking part 16 and is in threaded connection with the locking part 16, the outer diameter of the disengagement preventing part 21 is larger than the inner diameter of the fastening sleeve 14, an accommodating cavity is formed in the end face of the fastening sleeve 14, the disengagement preventing part 21 rotates in the accommodating cavity through a bearing 22, a stopping nut 23 is further in threaded connection with the fastening sleeve 14, and a stopping ring 24 which extends inwards in the radial direction and prevents the disengagement preventing part 21 from disengaging from the accommodating cavity;
the inner wall of the stop ring 24 is uniformly distributed with stop blocks 25 along the circumferential direction, the stop nut 23 is rotated, the stop nut 23 compresses the anti-disengagement part 21 in the accommodating cavity through the stop blocks 25 under the action of the threads, the anti-disengagement part 21 is prevented from disengaging from the accommodating cavity, and meanwhile, when the locking nut 18 is rotated, the locking nut 18 drives the fastening sleeve 14 to slide along the axial direction of the sliding part 15 through the matching of the anti-disengagement part 21 and the stop blocks 25 under the action of the threads;
the circumference of the handle portion 20 is provided with a notch 26 which penetrates through the circumference along the axial direction and is respectively matched with the stop block 25, the stop block 25 can move along the axial direction of the locking nut 18 through the notch 26, during installation, the whole stop nut 23 firstly enters between the handle portion 20 and the anti-falling portion 21 through the notch 26, and then the stop nut 23 is in threaded connection on the fastening sleeve 14 until the anti-falling portion 21 is pressed in the accommodating cavity.
The utility model discloses a theory of operation:
during assembly, a buckling process is firstly adopted to prepare a stainless steel corrugated pipe 1, two ends of the stainless steel corrugated pipe 1 are respectively sleeved with sealing rubber 2, a stretched carbon steel metal sleeve 3 is sleeved outside the sealing rubber 2, the end part of the carbon steel metal sleeve 3 is pressed by a hydraulic press to ensure that the stainless steel corrugated pipe 1 and the carbon steel metal sleeve 3 are buckled and pressed without air leakage, a buckling part 4 which protrudes out of the side wall of a body of the carbon steel metal sleeve 3 along the circumferential direction is formed at the end part of the carbon steel metal sleeve 3, and an extending end face 8 which extends inwards along the radial direction is formed at the end part of the carbon steel metal sleeve 3 which is positioned at the buckling;
then, assembling an external joint 6 assembly, namely, firstly, connecting a locking nut 18 on a locking part 16 in a threaded manner, installing a bearing 22 in a containing cavity of a fastening sleeve 14 in advance, then sleeving the containing cavity of the fastening sleeve 14 on the external joint 6 from the direction of a sliding part 15, enabling a pushing block 28 in the fastening sleeve 14 to correspond to an elastic metal arm 12 respectively, simultaneously enabling a disengagement-preventing part 21 of the locking nut 18 to enter the containing cavity to be matched with the bearing 22, then enabling a stop nut 23 to integrally enter a space between a handle part 20 and the disengagement-preventing part 21 through a notch 26, then connecting the stop nut 23 on the fastening sleeve 14 in a threaded manner until the disengagement-preventing part 21 is pressed in the containing cavity, and finishing the integral assembly of the external joint 6 assembly; firstly, the sliding part 15 of the outer joint 6 is in threaded connection with the fastening nut 5 through external threads, then the fastening nut 5 is rotated, the whole outer joint 6 assembly moves towards the fastening nut 5 under the action of the threads, the whole outer joint 6 assembly is pressed on the extending end face 8 of the carbon steel metal sleeve 3 under the matching of the stopping part 7 and the buckling part 4, and the whole assembly is finished;
during the installation, insert the outer joint respectively in outer joint 6's external mounting hole 13 to it is fixed with the internal connection screw thread or the external threaded connection of sliding part 15, then rotate lock nut 18, lock nut 18 drives adapter sleeve 14 along sliding part 15's axial slip through the cooperation of check-out portion 21 with backstop piece 25 under the effect of screw thread, order about elastic metal arm 12 through promoting piece 28 and outwards connect mounting hole 13 inboard shrink, thereby will install the outer joint pipe clamp in outer joint 6 and press from both sides tightly fixed, and can not loosen after pressing from both sides tightly, further improve the connection fixity between outer joint 6 and the outer joint pipe.
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 (10)

1. The stainless steel explosion-proof flexible connecting pipe is characterized by comprising a stainless steel corrugated pipe, sealing rubber is sleeved at openings of two ends of the stainless steel corrugated pipe respectively, a carbon steel metal sleeve is sleeved outside the sealing rubber, a buckling part protruding out of the side wall of a carbon steel metal sleeve body along the circumferential direction is formed at the end part of the carbon steel metal sleeve positioned at the opening of the stainless steel corrugated pipe, a fastening nut is sleeved outside the carbon steel metal sleeve, a stopping part matched with the buckling part is formed at one end of the fastening nut sleeved on the carbon steel metal sleeve, internal threads are arranged at the other end of the fastening nut, the fastening nut is connected with an external joint through the internal threads, and the external joint is pressed on the end face of the carbon steel metal sleeve through the matching of the stopping part and the buckling part under the action of the threads.
2. A strong stainless steel explosion-proof flexible connecting pipe as recited in claim 1, wherein said carbon steel metal sleeve is further provided with an extended end surface extending radially inward at an end of the fastening portion, and the external joint is pressed against said extended end surface.
3. A strong stainless steel explosion-proof flexible connecting pipe as recited in claim 2, wherein a lead pad is further provided between said external joint and said extended end surface.
4. A strong stainless steel explosion-proof flexible connection tube according to claim 3, wherein said sealing rubber includes a sealing rubber body and an extension part located at one end of the sealing rubber body and extending radially inward, the sealing rubber body is compressed between the outer wall of the stainless steel bellows and the inner wall of the carbon steel metal sleeve, and said extension part is compressed between the inner side of said extending end face and the end face of the stainless steel bellows.
5. The stainless steel explosion-proof flexible connecting pipe with strong fixing property according to any one of claims 1 to 4, wherein the outer joint comprises an outer joint body and an elastic metal arm, the outer joint body is in threaded connection with the fastening nut, an external mounting hole is formed in the outer joint body along the axial direction, the elastic metal arm is uniformly distributed at one end of the outer joint body along the circumferential direction, a fastening sleeve movably arranged along the axial direction of the outer joint body is further sleeved outside the outer joint body, the fastening sleeve can drive the elastic metal arm to contract inwards of the external mounting hole when moving along the axial direction, and when the elastic metal arm contracts inwards, the fastening sleeve can be fixedly connected with the outer joint body.
6. The stainless steel explosion-proof flexible connecting pipe with strong fixation property as claimed in claim 5, wherein the outer joint body comprises a sliding part and a locking part, the sliding part is provided with an external thread with a diameter smaller than that of the sliding part body, the sliding part is in threaded connection with the fastening nut through the external thread, the outer joint body between the sliding part and the locking part is provided with a containing hole penetrating through the side wall, one end of the elastic metal arm is fixed on the inner wall of one side of the containing hole, a gap is reserved between the other end of the elastic metal arm and the inner wall of the opposite side of the containing hole, one end of the fastening sleeve is sleeved on the sliding part, the other end of the fastening sleeve is sleeved with the locking nut, the locking nut rotates on the fastening sleeve, the locking nut is in threaded connection with the locking part, and the locking nut drives the fastening sleeve to slide along the axial.
7. A strong-fixing stainless steel explosion-proof flexible connecting pipe as recited in claim 6, wherein said locking nut comprises a nut body, a handle portion and a disengagement preventing portion protruding from the side wall of the nut body and distributed at both ends of the nut body, said nut body is sleeved on the locking portion and is in threaded connection with the locking portion, the outer diameter of the disengagement preventing portion is larger than the inner diameter of the fastening sleeve, an accommodating cavity is provided on the end face of the fastening sleeve, said disengagement preventing portion rotates in the accommodating cavity through a bearing, a stop nut is further in threaded connection with the fastening sleeve, and a stop ring extending radially inward and preventing the disengagement preventing portion from disengaging from the accommodating cavity is provided at one end of the stop nut.
8. A strong-fixing stainless steel explosion-proof flexible connecting pipe as recited in claim 7, wherein the inner wall of the stop ring is uniformly distributed with stop blocks along the circumferential direction, the stop nut compresses the anti-releasing portion in the accommodating cavity through the stop blocks under the action of the screw thread, the circumferential surface of the handle portion is provided with notches which penetrate along the axial direction and are respectively matched with the stop blocks, and the stop blocks can move along the axial direction of the locking nut through the notches.
9. The stainless steel explosion-proof flexible connecting pipe with strong fixing property as claimed in any one of claims 6 to 8, wherein the diameter of the locking portion is larger than that of the sliding portion, the outer joint body further comprises a circular table portion connected between the sliding portion and the locking portion, a receiving hole is formed in a side wall of the circular table portion, the receiving hole extends from the sliding portion to the locking portion along the axial direction of the outer joint body, one end of the elastic metal arm is fixedly connected with the sliding portion, a gap is left between the other end of the elastic metal arm and the locking portion, pushing blocks capable of being respectively contacted with the elastic metal arm are arranged on the inner wall of the fastening sleeve, and the fastening sleeve drives the elastic metal arm to contract towards the inside of the outer joint mounting hole through the pushing blocks.
10. A strong stainless steel explosion-proof flexible connecting pipe as recited in claim 9, wherein the surface of said elastic metal arm is a slope surface matching with the circular truncated cone portion, the surface of said pushing block contacting with the elastic metal arm is a coupling surface matching with the slope surface, and the slope of said coupling surface is smaller than the slope of the slope surface.
CN201920577088.1U 2019-04-25 2019-04-25 Stainless steel explosion-proof flexible connection pipe with strong solidity Expired - Fee Related CN209977484U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920577088.1U CN209977484U (en) 2019-04-25 2019-04-25 Stainless steel explosion-proof flexible connection pipe with strong solidity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920577088.1U CN209977484U (en) 2019-04-25 2019-04-25 Stainless steel explosion-proof flexible connection pipe with strong solidity

Publications (1)

Publication Number Publication Date
CN209977484U true CN209977484U (en) 2020-01-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920577088.1U Expired - Fee Related CN209977484U (en) 2019-04-25 2019-04-25 Stainless steel explosion-proof flexible connection pipe with strong solidity

Country Status (1)

Country Link
CN (1) CN209977484U (en)

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Granted publication date: 20200121

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