Compression-resistant spiral corrugated pipe

Abstract

The utility model relates to the technical field of corrugated pipes, and discloses a compression-resistant spiral corrugated pipe which comprises a corrugated pipe outer layer, an inner pipe, an interlayer space, a spring supporting piece, a supporting sleeve, a telescopic rod, an ejection piece, a limiting piece and a spring. The spring supporting piece is of a curved structure and has the deformation characteristic, when the outer portion of the corrugated pipe outer layer is pressed, the corrugated pipe outer layer can firstly extrude the spring supporting piece, the spring supporting piece can preliminarily support and buffer the external pressure of the corrugated pipe outer layer, and meanwhile when the inner side of the corrugated pipe outer layer is deformed and pressed, the inner side of the corrugated pipe outer layer can be extruded by the spring supporting piece. The telescopic rod can be extruded by the inner side of the outer layer of the corrugated pipe through the ejection piece, the ejection piece can be supported by the spring outside the telescopic rod, the supporting effect on the inner side of the outer layer of the corrugated pipe is improved, and therefore the effects that the pressure resistance of the outer layer of the corrugated pipe is improved, and the service life of the corrugated pipe is prolonged are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated pipes, in particular to a pressure-resistant spiral corrugated pipe. Background Art

[0002] Spiral corrugated pipe is a composite PE material using U-shaped steel belt, which greatly improves the ring stiffness of the pipe without increasing the cost. Under the same weight, the strength is greatly improved compared with the winding pipe and carat pipe. Spiral corrugated pipe is widely used in the discharge and recovery system of urban sewage and rainwater.

[0003] Existing spiral bellows are generally buried deep underground for medium transportation when in use. However, the spiral bellows are subject to greater pressure due to external environmental factors. After being under pressure for a long time, they are prone to extrusion damage and have a limited service life. Therefore, we propose a pressure-resistant spiral bellows. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a pressure-resistant spiral corrugated pipe.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pressure-resistant spiral corrugated pipe, comprising an outer layer of a corrugated pipe, an inner pipe is arranged inside the outer layer of the corrugated pipe, an interlayer space is integrally formed inside the outer layer of the corrugated pipe, a spring support sheet is arranged inside the interlayer space, the spring support sheet is a curved structure and the spring support sheet itself has deformation characteristics, a support sleeve is installed at the outer recessed position of the spring support sheet, a telescopic rod is arranged inside the support sleeve, a top piece that supports the inner side of the outer layer of the corrugated pipe is installed at one end of the telescopic rod, and the other end of the telescopic rod is slidingly matched with the inner limit of the support sleeve through a limit piece, and the outer sleeve of the telescopic rod is provided with a spring supported and connected to the top piece.

[0006] Preferably, the inner protruding portion of the spring support sheet is supported and matched with the inner inner ring surface of the outer layer of the bellows, and the outer protruding portion of the spring support sheet is supported and matched with the inner outer ring surface of the outer layer of the bellows.

[0007] Preferably, when the outer layer of the bellows is under pressure, the spring support sheet inside the interlayer space is in a supporting and buffering state for the outer layer of the bellows.

[0008] Preferably, when the outer part of the outer layer of the bellows is under pressure, the inner side of the outer layer of the bellows is in a compression and buffering state against the spring outside the telescopic rod through the top piece.

[0009] Preferably, a buffer airbag with air pressure inside is filled between the outer layer of the bellows and the inner tube. When the outer layer of the bellows squeezes the buffer airbag, the inner tube is deformed and supported by the buffer airbag to be in a buffering state.

[0010] Beneficial Effects

[0011] The utility model provides a pressure-resistant spiral corrugated pipe, which has the following beneficial effects:

[0012] 1. A compression-resistant spiral bellows. In this article, a spring support sheet is arranged inside the outer layer of the bellows through the interlayer space, and the inner and outer protruding parts of the spring support sheet are both in contact with and supported by the inner side of the interlayer space. The spring support sheet itself is a curved structure and has deformation characteristics. When the outer layer of the bellows is under pressure, the outer layer of the bellows can first squeeze the spring support sheet, and the spring support sheet can provide preliminary support and buffering for the external pressure of the outer layer of the bellows. At the same time, when the inner side of the outer layer of the bellows is deformed and compressed, the inner side of the outer layer of the bellows can squeeze the telescopic rod through the top piece, and the spring outside the telescopic rod can support the top piece, thereby increasing the support effect on the inner side of the outer layer of the bellows, thereby achieving the effect of increasing the pressure resistance of the outer layer of the bellows and improving the service life of the bellows.

[0013] 2. A compression-resistant spiral corrugated tube, wherein an inner tube is arranged inside the outer layer of the corrugated tube, and a cushioning airbag is embedded and installed between the outer layer and the inner tube of the corrugated tube. The cushioning airbag is filled with air pressure and can be transported and used through the inner tube inside the outer layer of the corrugated tube to avoid direct pressure. When the cushioning airbag between the outer layer and the inner tube of the corrugated tube is under pressure, the cushioning airbag can be deformed and supported by the air pressure inside the cushioning airbag, thereby improving the compression resistance of the corrugated tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A magnified view of middle;

[0018] Figure 3 It is a partial schematic diagram of the spring support sheet of the utility model;

[0019] Figure 4 For this utility model Figure 3 Enlarged view of B.

[0020] Legend:

[0021] 1. Outer layer of the bellows; 2. Inner tube; 3. Interlayer space; 4. Spring support sheet; 5. Support sleeve; 6. Telescopic rod; 7. Top piece; 8. Limiting piece; 9. Spring; 10. Buffer airbag. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1: A compression-resistant spiral bellows, such as Figure 1 , Figure 2 As shown, it includes a bellows outer layer 1, an inner tube 2 is arranged inside the bellows outer layer 1, an interlayer space 3 is integrally formed inside the bellows outer layer 1, a spring support sheet 4 is arranged inside the interlayer space 3, the spring support sheet 4 is a curved structure and the spring support sheet 4 itself has deformation characteristics, a support sleeve 5 is installed at the outer recessed position of the spring support sheet 4, a telescopic rod 6 is telescopically arranged inside the support sleeve 5, one end of the telescopic rod 6 is installed with a top piece 7 that supports the inner side of the bellows outer layer 1, the other end of the telescopic rod 6 is slidably matched with the inner limit of the support sleeve 5 through a limit piece 8, and the outer sleeve of the telescopic rod 6 is provided with a spring 9 that is supported and connected to the top piece 7.

[0024] Furthermore, the inner protruding portion of the spring support sheet 4 is supported and matched with the inner inner ring surface of the outer layer 1 of the bellows, and the outer protruding portion of the spring support sheet 4 is supported and matched with the inner outer ring surface of the outer layer 1 of the bellows.

[0025] Furthermore, when the outer part of the outer layer 1 of the bellows is under pressure, the spring support sheet 4 inside the interlayer space 3 is in a supporting and buffering state for the outer layer 1 of the bellows.

[0026] Furthermore, when the outside of the outer layer 1 of the bellows is under pressure, the inner side of the outer layer 1 of the bellows is in a compression and buffering state with respect to the spring 9 outside the telescopic rod 6 through the top piece 7 .

[0027] Embodiment 2: A compression-resistant spiral bellows, such as Figure 1 , Figure 3 , Figure 4 As shown, it includes a bellows outer layer 1, an inner tube 2 is arranged inside the bellows outer layer 1, an interlayer space 3 is integrally formed inside the bellows outer layer 1, a spring support sheet 4 is arranged inside the interlayer space 3, the spring support sheet 4 is a curved structure and the spring support sheet 4 itself has deformation characteristics, a support sleeve 5 is installed at the outer recessed position of the spring support sheet 4, a telescopic rod 6 is telescopically arranged inside the support sleeve 5, one end of the telescopic rod 6 is installed with a top piece 7 that supports the inner side of the bellows outer layer 1, the other end of the telescopic rod 6 is slidably matched with the inner limit of the support sleeve 5 through a limit piece 8, and the outer sleeve of the telescopic rod 6 is provided with a spring 9 that is supported and connected to the top piece 7.

[0028] Furthermore, the inner protruding portion of the spring support sheet 4 is supported and cooperated with the inner inner ring surface of the outer layer 1 of the bellows, and the outer protruding portion of the spring support sheet 4 is supported and cooperated with the inner outer ring surface of the outer layer 1 of the bellows. When the outside of the outer layer 1 of the bellows is under pressure, the spring support sheet 4 inside the interlayer space 3 is in a supporting and buffering state for the outer layer 1 of the bellows. When the outside of the outer layer 1 of the bellows is under pressure, the inner side of the outer layer 1 of the bellows is in an extrusion and buffering state for the spring 9 outside the telescopic rod 6 through the top piece 7.

[0029] Furthermore, a cushioning airbag 10 with air pressure inside is filled between the outer layer 1 of the corrugated tube and the inner tube 2. When the outer layer 1 of the corrugated tube compresses the cushioning airbag 10, the inner tube 2 is deformed and supported by the cushioning airbag 10 to be in a cushioning state.

[0030] The working principle of this utility model:

[0031] A spring support sheet 4 is arranged in the inner part of the outer layer 1 of the bellows through the interlayer space 3, and the inner and outer protruding parts of the spring support sheet 4 are both in contact with and supported by the inner side of the interlayer space 3, and the spring support sheet 4 itself is a curved structure and has deformation characteristics. When the outer layer 1 of the bellows is under pressure, the outer layer 1 of the bellows can first squeeze the spring support sheet 4, and the spring support sheet 4 can provide preliminary support and buffering for the external pressure of the outer layer 1 of the bellows. At the same time, when the inner side of the outer layer 1 of the bellows is deformed and compressed, the inner side of the outer layer 1 of the bellows can squeeze the telescopic rod 6 through the top piece 7, and the telescopic rod The spring 9 outside 6 can support the top piece 7, increase the supporting effect on the inner side of the outer layer 1 of the bellows, thereby increasing the pressure resistance of the outer layer 1 of the bellows and improving the service life of the bellows. An inner tube 2 is arranged inside the outer layer 1 of the bellows, and a buffer airbag 10 is embedded and installed between the outer layer 1 of the bellows and the inner tube 2. The buffer airbag 10 is filled with air pressure and can be transported and used through the inner tube 2 inside the outer layer 1 of the bellows to avoid direct pressure. When the buffer airbag 10 between the outer layer 1 and the inner tube 2 of the bellows is under pressure, the buffer airbag 10 can be deformed and supported by the air pressure inside the buffer airbag 10.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A compression-resistant spiral bellows, comprising a bellows outer layer (1), characterized in that: An inner tube (2) is arranged inside the outer layer (1) of the bellows, and an interlayer space (3) is integrally formed inside the outer layer (1) of the bellows. A spring support sheet (4) is arranged inside the interlayer space (3). The spring support sheet (4) is a curved structure and the spring support sheet (4) itself has a deformation characteristic. A support sleeve (5) is installed at a recessed position on the periphery of the spring support sheet (4). A telescopic rod (6) is telescopically arranged inside the support sleeve (5). A top piece (7) supporting the inner side of the outer layer (1) of the bellows is installed at one end of the telescopic rod (6). The other end of the telescopic rod (6) is limitedly slidably matched with the inside of the support sleeve (5) through a limit piece (8). The outer sleeve of the telescopic rod (6) is provided with a spring (9) supportingly connected to the top piece (7).

2. The compression-resistant spiral bellows according to claim 1, characterized in that: The inner protruding portion of the spring support sheet (4) is supported and matched with the inner inner ring surface of the outer layer (1) of the bellows, and the outer protruding portion of the spring support sheet (4) is supported and matched with the inner outer ring surface of the outer layer (1) of the bellows.

3. A compression-resistant spiral bellows according to claim 2, characterized in that: When the outer portion of the outer layer (1) of the bellows is under pressure, the spring support sheet (4) inside the interlayer space (3) is in a supporting and buffering state for the outer layer (1) of the bellows.

4. The compression-resistant spiral bellows according to claim 3, characterized in that: When the outside of the outer layer (1) of the bellows is under pressure, the inside of the outer layer (1) of the bellows is in a compression buffering state against the spring (9) outside the telescopic rod (6) through the top piece (7).

5. The compression-resistant spiral bellows according to claim 1, characterized in that: A cushioning airbag (10) with air pressure inside is filled between the outer layer (1) of the bellows and the inner tube (2); when the outer layer (1) of the bellows compresses the cushioning airbag (10), the inner tube (2) is in a deformed supporting cushioning state through the cushioning airbag (10).

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