Anti-falling corrugated pipe assembly
By incorporating anti-detachment protrusions and anti-detachment grooves at the corrugated pipe connection points, and utilizing the elastic properties of the corrugated pipe, the problem of unstable corrugated pipe connections is solved, achieving both anti-detachment and convenient maintenance and disassembly.
Patent Information
- Application Number
- CN202511792281.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-01-20
AI Technical Summary
Traditional corrugated pipes are not securely connected and are prone to axial separation and detachment due to water flow impact.
A sealing ring is sandwiched between two adjacent crests at the front section of the rear bellows, and an anti-detachment protrusion is provided on the outer wall of the bellows behind the sealing ring. An anti-detachment groove is provided on the inner wall of the front bellows. The elastic properties of the bellows are used to make the anti-detachment protrusion snap into the anti-detachment groove under the thrust of the water flow to achieve fixation. The anti-detachment protrusion and the anti-detachment groove cooperate to prevent the bellows from separating axially.
It effectively prevents the corrugated pipe from separating axially under the thrust of water flow, ensuring the stability of the connection, and enabling quick disassembly and maintenance through elastic reset when needed.
Smart Images
Figure CN121363670A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of pipe material, in particular to a kind of anti-falling corrugated pipe assembly. BACKGROUND
[0002] Corrugated pipe is widely used as underground pipeline due to good pressure resistance, low engineering cost and light weight. Traditionally, two corrugated pipes are arranged in front and back, and the front end of the front section of the rear corrugated pipe is inserted into the inside of the rear section of the front corrugated pipe to realize connection. The outer wall of each corrugated pipe is arranged with a plurality of radially outward convex wave crests at intervals in the axial direction, and a sealing ring is clamped between the two adjacent wave crests at the front end of the front section of the rear corrugated pipe. The two corrugated pipes are only fixedly connected by the friction force between the inner wall of the rear section of the front corrugated pipe and the sealing ring, and are not firm. In actual work, the water flow in the corrugated pipe is transported from front to back, and long-term water flow impact will generate a continuous axial thrust on the rear corrugated pipe, so that the connection between the two adjacent corrugated pipes is easy to separate and fall off in the axial direction. SUMMARY
[0003] The technical problem to be solved by the present application is to provide an anti-falling corrugated pipe assembly, which is not easy to fall off when the two adjacent corrugated pipes are connected.
[0004] An anti-falling corrugated pipe assembly includes a plurality of same corrugated pipes arranged in front and back in the axial direction. Among every two adjacent corrugated pipes in front and back, the front section of the rear corrugated pipe is inserted into the inside of the rear section of the front corrugated pipe to realize connection. The outer wall of each corrugated pipe is arranged with a plurality of radially outward convex wave crests at intervals in the axial direction. A sealing ring is clamped between two adjacent wave crests of the front section of the rear corrugated pipe in the axial direction. The sealing ring is clamped radially between the outer wall of the front section of the rear corrugated pipe and the inner wall of the rear section of the front corrugated pipe to form a sealing structure. The lower part of one wave crest of the outer wall of the front section of the rear corrugated pipe located at the rear side of the sealing ring is provided with a downward convex anti-falling protrusion. The rear section of the front corrugated pipe is correspondingly provided with an anti-falling groove. In the static state, the anti-falling protrusion is aligned with the anti-falling groove but not clamped into the anti-falling groove. The corrugated pipe is an elastic corrugated pipe, and the lower part of the corrugated pipe elastically deforms downward under the condition of downward expansion force. Then the anti-falling protrusion is clamped into the anti-falling groove to realize anti-falling fixation of the two adjacent corrugated pipes in front and back.
[0005] Further, the anti-falling protrusion and the anti-falling groove are specifically arranged on the left and right sides of the circumferential lowest position of the corrugated pipe. The circumferential lowest position of the corrugated pipe is not provided with the anti-falling protrusion and the anti-falling groove.
[0006] Further, the anti-falling protrusion is specifically convexly protruded to the rear and downward, and the anti-falling groove is correspondingly formed to the rear and downward to clamp the anti-falling protrusion.
[0007] Further, the front section of the rear corrugated pipe is provided with a rear mark block, and the rear section of the front corrugated pipe is correspondingly provided with a front mark block. When the front mark block and the rear mark block are aligned with each other, the anti-falling protrusion and the anti-falling groove are aligned with each other.
[0008] Further, one of the peaks of the front section of the bellows is a anti-disengagement peak, the top of which is provided with a first outward convex portion in front and a first inward concave portion behind, the inner wall of the rear section of the bellows is provided with a second outward concave portion in front and a second inward convex portion behind, and the first outward convex portion and / or the second inward convex portion is provided with a buckle guiding slope; the front section of the rear bellows is inserted into the inside of the rear section of the front bellows, so that the first outward convex portion of the front section and the second inward convex portion of the rear section are guided by the buckle guiding slope to be elastically offset radially and staggered with each other, so as to pass over each other, and after passing over each other, the second inward convex portion is elastically reset radially and falls into the first inward concave portion of the front section of the rear bellows to be buckled and fixed, and the first outward convex portion is elastically reset radially and falls into the second outward concave portion of the rear section of the front bellows to be buckled and fixed.
[0009] Further, among the plurality of peaks, there is a common peak, the radial height of the highest part of the first outward convex portion of the anti-disengagement peak is greater than that of the common peak, and the radial height of the lowest part of the first inward concave portion is less than that of the common peak.
[0010] Further, among the plurality of peaks, there are a plurality of small peaks, the peak in front of the front section of the bellows is a small peak, the radial height of which is less than that of the common peak and equal to that of the lowest part of the first inward concave portion of the anti-disengagement peak.
[0011] Further, the first outward convex portion and / or the second inward convex portion of the anti-disengagement peak is provided with a disengagement guiding slope; the front section of the rear bellows is pulled out of the inside of the rear section of the front bellows, so that the first outward convex portion of the front section and the second inward convex portion of the rear section are guided by the disengagement guiding slope to be elastically offset radially and staggered with each other, so as to pass over each other, and after passing over each other, the second inward convex portion is elastically reset radially and separated from the first inward concave portion of the front section of the rear bellows to be released from the fixation, and the first outward convex portion is elastically reset radially and separated from the second outward concave portion of the rear section of the front bellows to be released from the fixation.
[0012] Further, the rear section of the bellows is provided with an expansion joint between the front of the second outward concave portion and the rear of the anti-disengagement groove.
[0013] Further, the anti-disengagement groove is a through groove, and the anti-disengagement convex portion is exposed outside the rear section of the front bellows by passing through the anti-disengagement groove.
[0014] The front section of the rear bellows is inserted into the inside of the rear section of the front bellows to realize the connection. In normal operation, the water flow is transported from front to back, the rear bellows as a whole is subjected to continuous axial thrust, and the lower part is subjected to downward expansion force, which produces elastic deformation downward, and then the anti-disengagement convex portion is displaced with the deformation and clamped into the anti-disengagement groove to prevent the axial separation of the bellows. When maintenance is needed, first close the water inlet valve of the bellows, and then drain the accumulated water in the pipe through the water outlet valve; with the disappearance of the water flow pressure, the bellows connection part will be elastically reset upward, and the anti-disengagement convex portion will be reset upward to separate from the anti-disengagement groove to be released from the locking, and then the front section of the rear bellows can be pulled out axially from the inside of the rear section of the front bellows to be separated. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a perspective view of the first view of the corrugated pipe assembly connection.
[0016] Figure 2 is a partial enlarged view of the I part of Figure 1 Figure 1 is a partial enlarged view of the II part of
[0017] Figure 3 is a sectional view of the corrugated pipe assembly connection in a static state.
[0018] Figure 4 is a partial enlarged view of the III part of Figure 3 Figure 3 is a partial enlarged view of the II part of
[0019] Figure 5 is a sectional view of the corrugated pipe assembly connection in an elastic deformation state.
[0020] Figure 6 is a partial enlarged view of the III part of Figure 5 Figure 5 is a partial enlarged view of the II part of
[0021] Figure 7 is a perspective view of the second view of the corrugated pipe assembly connection. DETAILED DESCRIPTION
[0022] The present application will be further described in conjunction with the specific embodiments.
[0023] As shown in Figure 1 , the corrugated pipe assembly comprises two identical corrugated pipes arranged axially in front and back. In each of the two corrugated pipes arranged axially in front and back, the outer diameter of the front section 1 of the rear corrugated pipe is smaller than the inner diameter of the rear section 2 of the front corrugated pipe, and the front section 1 of the rear corrugated pipe is inserted into the inner side of the rear section 2 of the front corrugated pipe to achieve connection. See Figure 3 , a plurality of radially outward convex wave crests 6, 7 are arranged axially on the outer wall of each corrugated pipe, of which the first three wave crests are small wave crests 7, and the radial height of the small wave crest 7 is smaller than that of the ordinary wave crest 6. The two adjacent small wave crests 7 at the front of the front section 1 of the rear corrugated pipe are provided with a sealing ring 4 therebetween, and the sealing ring 4 is radially clamped between the outer wall of the front section 1 of the rear corrugated pipe and the inner wall of the rear section 2 of the front corrugated pipe to form a sealing structure. This is the prior art.
[0024] The corrugated pipe of the present application further comprises a radially outward convex anti-disengagement wave crest 8 located between the small wave crest 7 and the ordinary wave crest 6, and the top of the anti-disengagement wave crest 8 is provided with a first outward convex portion 81 in front and a first inward concave portion 82 behind. The radial height of the highest part of the first outward convex portion 81 is greater than that of the ordinary wave crest 6, and the radial height of the lowest part of the first inward concave portion 82 is smaller than that of the ordinary wave crest 6 and equal to that of the small wave crest 7. The inner wall of the rear section 2 of the corrugated pipe is provided with a second outward concave portion 21 in front and a second inward convex portion 22 behind. See Figure 4 The front side of the first outer convex part 81 and the rear side of the second inner convex part 22 are both provided with a buckle guiding slope 51. The front section 1 of the rear bellows is inserted into the inside of the rear section 2 of the front bellows, and the small wave crest 7 of the front section 1 of the rear bellows passes over the second inner convex part 22 of the inner wall of the rear section 2 of the front bellows; the rear bellows continues to be inserted forward, and the first outer convex part 81 of the front section 1 of the rear bellows and the second inner convex part 22 of the rear section 2 of the front bellows are guided by the buckle guiding slope 51 to elastically deviate from each other in the radial direction and to pass over each other; after passing over each other, the second inner convex part 22 elastically returns in the radial direction and falls into the first inner concave part 82 of the front section 1 of the rear bellows to buckle and fix, forming a first fixing structure, and the first outer convex part 81 elastically returns in the radial direction and falls into the second outer concave part 21 of the rear section 2 of the front bellows to buckle and fix, forming a second fixing structure, and the two fixing structures cooperate with each other to fix the two adjacent bellows. The rear side of the first outer convex part 81 and the front side of the second inner convex part 22 are both provided with a disengaging slope 52. The front section 1 of the rear bellows is pulled out of the inside of the rear section 2 of the front bellows in the axial direction, and the first outer convex part 81 of the front section 1 of the rear bellows and the second inner convex part 22 of the rear section 2 of the front bellows are guided by the disengaging slope 52 to elastically deviate from each other in the radial direction and to pass over each other; after passing over each other, the second inner convex part 22 elastically returns in the radial direction and disengages from the first inner concave part 82 of the front section 1 of the rear bellows to release the first fixing structure, and the first outer convex part 81 elastically returns in the radial direction and disengages from the second outer concave part 21 of the rear section 2 of the front bellows to release the second fixing structure, so that the front section 1 of the rear bellows can be pulled out of the inside of the rear section 2 of the front bellows in the axial direction and separated. The bellows is made of elastic materials such as high-density polyethylene (HDPE-BS) or acrylonitrile-butadiene-styrene copolymer (ABS), which can realize the elastic deviation and elastic return mentioned above.
[0025] See Figure 2 , the uppermost part (i.e. the circumferentially highest position) of the second ordinary wave crest 6 on the outer wall of the front section 1 of the rear bellows is provided with a rear marker block 91, and the uppermost part (i.e. the circumferentially highest position) of the last end of the outer wall of the rear section 2 of the front bellows is correspondingly provided with a front marker block 92. See Figure 1 、 Figure 3 , the lower part (i.e. the circumferentially lowest position) of the first small wave crest 7 on the outer wall of the front section 1 of the rear bellows on the rear side of the sealing ring 4 is provided with a anti-disengaging convex part 10 on the left and right sides, and the rear section 2 of the front bellows is correspondingly provided with an anti-disengaging groove 20 on the left and right sides. When the two bellows are operated to align the two marker blocks 91, 92 with each other, the anti-disengaging convex parts 10 and the anti-disengaging grooves 20 are aligned with each other on the left and right sides of the circumferentially lowest position of the bellows. After the connection of the bellows is completed, the anti-disengaging convex parts 10 are aligned with the anti-disengaging grooves 20 but not clamped into the anti-disengaging grooves 20, as shown in Figure 3 . See Figure 5, the control valve (not shown in the figure) at the open end of the bellows is put into use, and in normal operation, water flows from front to back, the rear bellows is subjected to continuous axial thrust in the rear direction and the lower part is subjected to expansion force downward, thus generating elastic deformation in the oblique rearward and downward direction. The elastic deformation state is shown in Figure 6 , the anti-disengagement protrusion 10 is displaced with the deformation and is clamped into the anti-disengagement groove 20 in the oblique rearward and downward direction, thus achieving anti-disengagement fixation of the two adjacent bellows in the front and rear directions and preventing axial separation.
[0026] When maintenance is needed, the water inlet valve (not shown in the figure) of the bellows is closed first, and the accumulated water in the pipe is discharged through the water outlet valve, and with the disappearance of the water flow pressure, the bellows connection part will be elastically reset in the oblique forward and upward direction, thus driving the anti-disengagement protrusion 10 to reset in the oblique forward and upward direction and disengage from the anti-disengagement groove 20 to release the locking, and then the rear bellows front section 1 can be pulled out axially from the inside of the front bellows rear section 2 to separate.
[0027] The anti-disengagement groove 20 is a through groove, and the anti-disengagement protrusion 10 is exposed outside the front bellows rear section 2 by passing through the anti-disengagement groove 20. Since the anti-disengagement groove 20 is located at the rear side of the sealing ring 4, the water in the bellows cannot flow out through the anti-disengagement groove 20. The outer wall of the bellows rear section 2 is sleeved with a plastic sealing film (not shown in the figure) to prevent backfill soil or silt from the external environment from entering the inner cavity of the bellows through the anti-disengagement groove 20. After the accumulated water in the pipe is discharged, if the anti-disengagement protrusion 10 fails to automatically reset and disengage due to foreign matter jamming, the maintenance personnel first remove the plastic sealing film at the anti-disengagement groove 20 corresponding to the anti-disengagement protrusion 10, and then use hydraulic jacks or other tools on the left and right sides of the bellows to push the anti-disengagement protrusion 10 in the oblique forward and upward direction to disengage from the anti-disengagement groove 20, thus releasing the locking, and the rear bellows front section can be pulled out axially from the inside of the front bellows rear section to separate. In the present embodiment, the anti-disengagement protrusion 10 and the anti-disengagement groove 20 are not located at the lowest position in the circumferential direction of the bellows, but are located on the left and right sides of the lowest position in the circumferential direction of the bellows, so they will not be pressed between the lowest position in the circumferential direction of the bellows and the ground, but will be exposed on the left and right sides of the bellows. Therefore, in the case where the anti-disengagement protrusion 10 fails to automatically disengage due to foreign matter jamming, it is not necessary to lift the bellows by additional operation, but only to use hydraulic jacks or other tools on the left and right sides of the bellows to push the anti-disengagement protrusion 10 in the oblique forward and upward direction to disengage from the anti-disengagement groove 20 to release the locking.
[0028] See Figure 3 , the bellows rear section 2 is provided with an expansion joint 23 between the front of the second outer recess 21 and the rear of the anti-disengagement groove 20, and in the case where the anti-disengagement protrusion 10 and the anti-disengagement groove 20 fail to lock due to unexpected factors, the expansion joint 23 can generate tensile or compressive deformation during geological subsidence to absorb external stress and prevent stress transmission to the two fixed structures mentioned above to cause disengagement.
Claims
1. A corrugated pipe assembly for preventing detachment, comprising multiple identical corrugated pipes arranged axially in a front-to-back manner, wherein in every two adjacent corrugated pipes, the front section of the rear corrugated pipe is inserted forward into the inner side of the rear section of the front corrugated pipe to achieve connection; the outer wall of each corrugated pipe has multiple radially convex peaks arranged axially at intervals; a sealing ring is axially sandwiched between two adjacent peaks in the front section of the rear corrugated pipe, and the sealing ring is radially clamped between the outer wall of the front section of the rear corrugated pipe and the inner wall of the rear section of the front corrugated pipe to form a sealing structure, characterized in that: One of the lower parts of the peak of the rear corrugated pipe front section outer wall at the rear side of the sealing ring is provided with a downward protruding anti-disengaging protrusion, and the front corrugated pipe rear section is correspondingly provided with an anti-disengaging slot. In the static state, the anti-disengaging protrusion is aligned with the anti-disengaging slot but does not enter the anti-disengaging slot. The corrugated pipe is an elastic corrugated pipe, and the lower part of the corrugated pipe elastically deforms downward under the downward expansion force. Then, the anti-disengaging protrusion is clamped into the anti-disengaging slot to achieve the anti-disengaging fixing of the two adjacent corrugated pipes.
2. The bellows assembly of claim 1, wherein: The anti-disengaging protrusion and the anti-disengaging slot are specifically arranged on the left and right sides of the circumferential lowest position of the corrugated pipe, and the circumferential lowest position of the corrugated pipe is not provided with the anti-disengaging protrusion and the anti-disengaging slot.
3. The bellows assembly of claim 1, wherein: The anti-disengaging protrusion specifically protrudes obliquely rearward and downward, and the anti-disengaging slot is correspondingly formed obliquely rearward and downward to clamp the anti-disengaging protrusion.
4. The bellows assembly of claim 1, wherein: The rear corrugated pipe front section outer wall is provided with a rear marker block, and the front corrugated pipe rear section outer wall is correspondingly provided with a front marker block. When the front and rear marker blocks are aligned with each other, the anti-disengaging protrusion and the anti-disengaging slot are aligned with each other.
5. The bellows assembly of claim 1, wherein: One of the peaks of the corrugated pipe front section is an anti-disengaging peak, and the peak top is provided with a front first outer protrusion and a rear first inner recess. The inner wall of the corrugated pipe rear section is provided with a front second outer recess and a rear second inner protrusion. An engaging inclined surface is arranged on the first outer protrusion and / or the second inner protrusion. The rear corrugated pipe front section is inserted into the inside of the front corrugated pipe rear section to make the first outer protrusion of the front section and the second inner protrusion of the rear section elastically deviate from each other by the engaging inclined surface to be overlapped with each other. After the overlapping, the second inner protrusion is elastically reset to be clamped in the first inner recess of the rear corrugated pipe front section to be fixed, and the first outer protrusion is elastically reset to be clamped in the second outer recess of the front corrugated pipe rear section to be fixed.
6. The bellows assembly of claim 5, wherein: Among the plurality of peaks, there are ordinary peaks. The first outer protrusion of the anti-disengaging peak has a radial height greater than that of the ordinary peak at the highest position, and the first inner recess has a radial height less than that of the ordinary peak at the lowest position.
7. The bellows assembly of claim 6, wherein: Among the plurality of peaks, there are a plurality of small peaks. The frontmost peak of the corrugated pipe front section is a small peak, and the radial height of the small peak is less than that of the ordinary peak and equal to that of the first inner recess of the anti-disengaging peak at the lowest position.
8. The bellows assembly of claim 5, wherein: An anti-disengaging protrusion is arranged on the first outer protrusion and / or the second inner protrusion of the anti-disengaging peak. The rear corrugated pipe front section is pulled out of the inside of the front corrugated pipe rear section to make the first outer protrusion of the front section and the second inner protrusion of the rear section elastically deviate from each other by the anti-disengaging inclined surface to be overlapped with each other. After the overlapping, the second inner protrusion is elastically reset to be disengaged from the first inner recess of the rear corrugated pipe front section to be released, and the first outer protrusion is elastically reset to be disengaged from the second outer recess of the front corrugated pipe rear section to be released.
9. The bellows assembly of claim 5, wherein: The corrugated pipe rear section is provided with an expansion joint between the front of the second outer recess and the rear of the anti-disengaging slot.
10. The bellows assembly of claim 1, wherein: The anti-disengaging slot is a through slot, and the anti-disengaging protrusion is exposed outside the front corrugated pipe rear section by passing through the anti-disengaging slot.