HDPE (High-Density Polyethylene) drainage pipe with high negative pressure resisting function

Abstract

The invention relates to an HDPE drainage pipe with a high negative pressure resisting function, and belongs to the technical field of drainage pipes. The HDPE drainage pipe with the high negative pressure resisting function comprises a drainage pipe body, the surface of the drainage pipe body is sleeved with an outer protection sleeve, and the outer protection sleeve is in a bamboo joint shape; the pressure-resistant mechanism is embedded and mounted in the external protective sleeve, and the surface of the pressure-resistant mechanism extends to the inner wall of the drainage pipe body; a good external supporting effect is formed through matched combination of the external pressure-resistant assembly and the internal pressure-resistant assembly, when the drainage pipe body locally has a negative pressure collapse trend to drive the internal pressure-resistant assembly to generate a deformation trend, at the moment, through combination of the external pressure-resistant assembly and the internal pressure-resistant assembly, the negative pressure trend is dispersed to adjacent areas, and the drainage effect is improved. The influence of negative pressure on the local part of the drainage pipe body is relieved, and the working effect stability of the whole drainage pipe body under the high negative pressure condition is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of drainage pipes, in particular to a HDPE drainage pipe with a high negative pressure resistance function. Background Art

[0002] HDPE drainage pipe is a general term for thermoplastic plastic round pipes without internal pressure, which are made of high-density polyethylene resin by extrusion molding process. HDPE drainage pipe is a replacement product of traditional steel pipes and polyvinyl chloride drainage pipes. It is mainly used for drainage of rainwater, sewage, farmland irrigation, etc. It is widely used in drainage fields such as roads, railway subgrades, subway projects, waste landfills, tunnels, green belts, sports fields, and slope protection caused by high water content, as well as underground irrigation and drainage systems in agriculture and horticulture;

[0003] Traditional HDPE drainage pipes are mainly designed to withstand external pressure (such as soil, traffic load, etc.) and internal water pressure. In some special application scenarios, such as vacuum drainage systems, negative pressure drainage systems, etc., pipes with negative pressure resistance may be required. These systems are usually used in situations where efficient drainage or special environmental treatment is required;

[0004] After searching the prior art for "a HDPE drainage pipe with high negative pressure resistance function", the announcement number is "CN211118055U". This device withstands negative pressure through a compression-resistant steel ring embedded in the inner wall of the wear-resistant rubber layer to maintain the support effect on the pipe body. However, in a long-term high negative pressure environment, it is difficult to rely on the steel ring to maintain a good support effect on the pipe body, which may cause the pipe body to collapse under negative pressure during long-term use, affecting the stability of the pipe body in continuous use under high negative pressure environment. Summary of the invention

[0005] Based on this, it is necessary to provide a HDPE drainage pipe with high negative pressure resistance to address the problem of collapse of the pipe body under negative pressure during long-term use, which affects the stability of the pipe body during continuous use in a high negative pressure environment.

[0006] A HDPE drainage pipe with high negative pressure resistance function, comprising: a drainage pipe body, the surface of which is provided with an external protective sleeve, the external protective sleeve being in the shape of a bamboo joint; a pressure-resistant mechanism, the pressure-resistant mechanism being embedded and installed inside the external protective sleeve, the surface of the pressure-resistant mechanism extending to the inner wall of the drainage pipe body; wherein the pressure-resistant mechanism comprises an external pressure-resistant component arranged on the surface of the drainage pipe body, the external pressure-resistant component being embedded and installed inside the external protective sleeve, an inner-tube pressure-resistant component being arranged on the inner side of the external pressure-resistant component, the inner-tube pressure-resistant component being installed on the inner wall of the drainage pipe body, an internal pressure-resistant component being arranged between the inner-tube pressure-resistant component and the external pressure-resistant component, the internal pressure-resistant component being located inside the drainage pipe body.

[0007] In one embodiment, the external pressure-resistant assembly includes multiple groups of reinforcing rods fixedly connected to the surface of the drainage pipe body, the multiple groups of reinforcing rods are evenly distributed in a ring shape along the surface of the drainage pipe body, the surface of the reinforcing rod is sleeved with multiple reinforcing rings, the reinforcing rings are fixedly connected to the surface of the drainage pipe body, two arc-shaped support frames are arranged between adjacent reinforcing rings, and the two arc-shaped support frames are respectively fixedly connected to the upper and lower arc-shaped surfaces of the drainage pipe body; the reinforcing rod includes multiple reinforcing support strips fixedly connected to the surface of the drainage pipe body, the inner wall of the reinforcing support strip is fixedly connected with internal reinforcing ribs, multiple reinforcing support strips are evenly distributed in a spiral shape along the surface of the drainage pipe body, the arc-shaped support frame is in a grid shape, adjacent reinforcing support strips penetrate the arc-shaped support frame and are fixedly connected to the surface of the arc-shaped support frame, and a side support block is arranged between the upper end arc-shaped support frame and the lower end arc-shaped support frame. The combination of three groups of reinforcing rods can play a continuous overall supporting effect on the surface of the drainage pipe body. Since the upper end surface of the arc-shaped support frame is arc-shaped, the drainage pipe body is relieved from collapsing inward due to high negative pressure.

[0008] In one of the embodiments, the in-pipe pressure-resistant component includes a plurality of positioning rings fixedly connected to the inner wall of the drainage pipe body, the plurality of positioning rings are evenly distributed in a straight line along the inner wall of the drainage pipe body, a deformable arc rubber plate is fixedly connected between adjacent positioning rings, a plurality of positioning inner ribs are fixedly connected to one side of the positioning ring, the surface of the positioning inner ribs is fixedly connected to the surface of the deformable arc rubber plate, and the plurality of positioning inner ribs are combined to form a spiral shape; when the device is in normal operation, the three axial positioning inner ribs cooperate with the positioning rings, so that the deformable arc rubber plate forms a concentric circle with the drainage pipe body, wherein the material of the deformable arc rubber plate is a deformable The medium is guided and transported inside the deformable arc rubber plate in the silicone material component that is not easy to break. When the internal pressure of the drainage pipe body is negative pressure, the three axial deformable arc rubber plates are deformed. At this time, the deformed arc rubber plates are combined to form a shape similar to a Leroy triangle. At the same time, multiple longitudinal deformable arc rubber plates are combined to form a spiral shape, so that the medium flow channel is guided by the deformable arc rubber plate. During the transportation process, the medium is swung toward the inner wall of the drainage pipe body, and then the material swinging offsets the inward collapse of part of the drainage pipe body due to the negative pressure, thereby improving the resistance of the drainage pipe body to high negative pressure.

[0009] In one embodiment, the internal pressure-resistant component includes a plurality of first assembly frames embedded and installed inside the drainage pipe body, the plurality of first assembly frames are distributed in a ring shape along the surface of the drainage pipe body, a plurality of second assembly frames are sleeved on the outside of the first assembly frames, the first assembly frames are spirally arranged along the surface of the drainage pipe body, and the second assembly frames are in the opposite spiral direction to the first assembly frames; the plurality of first assembly frames coincide with the central axis of the plurality of second assembly frames and the drainage pipe body, thereby reducing the degree of deformation of the drainage pipe body when it is subjected to high negative pressure.

[0010] In one embodiment, the reinforcement ring includes a support ring fixedly connected to the surface of the drainage pipe body, the surface of the support ring close to the drainage pipe body is provided with a plurality of double-rod connection grooves, the side of the support ring is provided with a plurality of single-rod supporting holes, the plurality of single-rod supporting holes and the double-rod connection grooves are distributed in an annular staggered manner along the surface of the support ring, the inner wall of the double-rod connection groove is fixedly connected to the surface of the adjacent reinforcement support strip close to the end, and the single-rod supporting hole is fixedly connected to the surface of the adjacent reinforcement support strip close to the middle. The plurality of support rings form a reinforcement support effect on the drainage pipe body, and the plurality of support rings will separate the surface of the drainage pipe body into a plurality of short tubes, thereby increasing the high negative pressure support effect on the drainage pipe body, and the reinforcement support strips form a linear support effect on the short tubes, so that the drainage pipe body between the two support rings maintains a good support effect under the action of the reinforcement support strips.

[0011] In one embodiment, a plurality of fixed arc plates are arranged between adjacent positioning inner ribs, the fixed arc plates are fixedly connected to one side of the positioning circular ring, the plurality of fixed arc plates are evenly distributed along the circular arc, the surface of the deformable arc rubber plate close to the drainage pipe body is fixedly connected with a plurality of retractable elastic bands, the retractable elastic bands and the fixed arc plates are staggered. When the drainage pipe body is under long distance, the deformable arc rubber plate contacts with the fixed arc plate to generate negative pressure, so that the deformable arc rubber plate forms a ring, and the combination of the plurality of deformable arc rubber plates forms a tube. When the drainage pipe body generates negative pressure, the deformable arc rubber plate approaches the center line of the drainage pipe body under the action of pressure, and the plurality of retractable elastic bands are pulled and extended by the movement of the deformable arc rubber plate. Since the positioning inner ribs position the deformable arc rubber plate, the deformation state of the deformable arc rubber plate is maintained, wherein the surface close to the positioning inner ribs can penetrate into the interior according to the usage, and be fixed to the surface of the internal pressure-resistant component, so as to assist in forming a supporting connection effect for the internal pressure-resistant component.

[0012] In one embodiment, an annular groove is provided inside the support ring, and a support ring is fixedly connected to the inner wall of the annular groove. The support ring is connected to the internal reinforcement rib, so as to support the internal reinforcement rib inside the reinforcement support strip.

[0013] In one embodiment, the single rod support hole is fixedly connected with an embedded connection block, which is welded to the surface of the adjacent support ring and the internal reinforcement rib. The embedded connection block is for the middle part of the internal reinforcement rib, and assists in maintaining the effect of the reinforced support strip supporting high negative pressure on the drainage pipe body.

[0014] In one embodiment, the side support block is fixedly connected to the surface of the drainage pipe body, and the end of the side support block is fixedly connected to the surface of the adjacent reinforcing support strip. Under the action of the side support block, a high negative pressure support effect is formed on the side of the drainage pipe body.

[0015] In one embodiment, the first assembly frame includes two groups of connecting cross bars, the angle between the two groups of connecting cross bars is 90 degrees, and arc-shaped oblique bars are fixedly connected between adjacent connecting cross bars, and the arc-shaped oblique bars are arc-shaped along the surface of the drainage pipe body. Multiple arc-shaped oblique bars are combined to form a dense annular support.

[0016] The above-mentioned HDPE drainage pipe with high negative pressure resistance function has a supporting effect on the outside of the drainage pipe body, reducing the surface collapse of the drainage pipe body into the drainage pipe body when the drainage pipe body is subjected to high negative pressure. The anti-pressure mechanism forms an annular support for the drainage pipe body, and at the same time, it can also provide surface support for the drainage pipe body. A good external support effect is formed by the coordinated combination of the external anti-pressure component and the internal anti-pressure component. When the drainage pipe body has a tendency of local negative pressure collapse, the internal anti-pressure component follows the deformation trend. At this time, the combination of the external anti-pressure component and the internal anti-pressure component disperses the negative pressure trend to the adjacent area, alleviates the influence of the negative pressure on the local drainage pipe body, and enhances the stability of the working effect of the overall drainage pipe body under high negative pressure conditions.

[0017] During the use of the device, when the internal pressure of the drainage pipe body is negative pressure, the three axial deformation arc rubber plates are deformed and combined to form a shape similar to a Leroy triangle. At the same time, the medium flow channel is guided by the deformation arc rubber plate after deformation, so that the medium in transportation is swung toward the inner wall of the drainage pipe body, and then the material swinging offsets the situation that part of the drainage pipe body collapses inward due to the negative pressure, thereby improving the resistance of the drainage pipe body to negative pressure. When the interior of the drainage pipe body is under long distance, the deformation arc rubber plate contacts with the fixed arc plate to generate negative pressure, which ensures the stability of the drainage pipe body working in a high negative pressure state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the end structure of the present invention;

[0021] Figure 3 is a cross-sectional view of the outer protective cover of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the compression-resistant mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the partial structure of the explosion of the external pressure-resistant component of the present invention;

[0024] Figure 6 It is a cross-sectional exploded view of the reinforcement ring of the present invention;

[0025] Figure 7 It is a schematic diagram of the double rod connection slot of the present invention;

[0026] Figure 8 It is a schematic diagram of the position of the side support block of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the internal pressure-resistant component of the present invention;

[0028] Fig.10 It is a schematic diagram of the connection between the connecting cross bar and the arc-shaped oblique bar of the present invention;

[0029] Fig.11 It is a schematic diagram of the structure of the negative pressure state of the in-pipe pressure-resistant component of the present invention;

[0030] Fig.12 It is a cross-sectional view of the negative pressure state of the intra-tube pressure-resistant component of the present invention.

[0031] Reference numerals:

[0032] 100, drainage pipe body; 200, external protective cover; 300, pressure-resistant mechanism; 310, external pressure-resistant assembly; 311, reinforcing rod; 3111, internal reinforcing rib; 3112, reinforcing support strip; 312, reinforcing ring; 3121, double-rod connecting groove; 3122, single-rod supporting hole; 3123, annular groove; 3124, supporting ring; 3125, supporting ring; 3126, embedded connecting block; 313, arc-shaped support frame; 314, side support block; 320, internal pressure-resistant assembly; 321, deformable arc rubber plate; 322, positioning inner rib; 323, fixed arc plate; 324, telescopic elastic band; 325, positioning ring; 330, internal pressure-resistant assembly; 331, first assembly frame; 3311, connecting cross bar; 3312, arc-shaped diagonal bar; 332, second assembly frame. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] Unless otherwise defined, all technical and scientific terms used in the specification of the present invention have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the specification of the present invention includes any and all combinations of one or more related listed items.

[0038] Combine the following Figure 1-Figure 12The HDPE drainage pipe with high negative pressure resistance function of the present invention comprises: a drainage pipe body 100, the surface of the drainage pipe body 100 is provided with an external protective sleeve 200, and the external protective sleeve 200 is in the shape of a bamboo joint; a pressure-resistant mechanism 300, the pressure-resistant mechanism 300 is embedded and installed inside the external protective sleeve 200, and the surface of the pressure-resistant mechanism 300 extends to the inner wall of the drainage pipe body 100; wherein the pressure-resistant mechanism 300 comprises an external pressure-resistant component 310 arranged on the surface of the drainage pipe body 100, the external pressure-resistant component 310 is embedded and installed inside the external protective sleeve 200, an inner pipe pressure-resistant component 320 is arranged on the inner side of the external pressure-resistant component 310, the inner pipe pressure-resistant component 320 is installed on the inner wall of the drainage pipe body 100, an internal pressure-resistant component 330 is arranged between the internal pipe pressure-resistant component 320 and the external pressure-resistant component 310, and the internal pressure-resistant component 330 is located inside the drainage pipe body 100;

[0039] like Figure 1-Figure 8 As shown, multiple groups of external pressure-resistant components 310 include multiple groups of reinforcing rods 311, multiple reinforcing rings 312, and two arc-shaped support frames 313. Multiple groups of reinforcing rods 311 are fixedly connected to the surface of the drainage pipe body 100. Multiple groups of reinforcing rods 311 are evenly distributed in a ring shape along the surface of the drainage pipe body 100. Multiple reinforcing rings 312 are sleeved on the surface of the reinforcing rods 311. The reinforcing rings 312 are fixedly connected to the surface of the drainage pipe body 100. Two arc-shaped support frames 313 are arranged between adjacent reinforcing rings 312. The two arc-shaped support frames 313 are respectively fixedly connected to the upper and lower arc-shaped surfaces of the drainage pipe body 100; the reinforcing rods 311 includes an internal reinforcing rib 3111 and a plurality of reinforcing support bars 3112, wherein the plurality of reinforcing support bars 3112 are fixedly connected to the surface of the drainage pipe body 100, the internal reinforcing rib 3111 is fixedly connected to the inner wall of the reinforcing support bar 3112, the plurality of reinforcing support bars 3112 are evenly distributed in a spiral shape along the surface of the drainage pipe body 100, the arc-shaped support frame 313 is in a grid shape, adjacent reinforcing support bars 3112 penetrate the arc-shaped support frame 313 and are fixedly connected to the surface of the arc-shaped support frame 313, and a side support block 314 is provided between the upper arc-shaped support frame 313 and the lower arc-shaped support frame 313;

[0040] The reinforcement ring 312 includes a support ring 3125, which is fixedly connected to the surface of the drainage pipe body 100. A plurality of double-rod connection grooves 3121 are provided on the surface of the support ring 3125 close to the drainage pipe body 100, and a plurality of single-rod holding holes 3122 are provided on the side of the support ring 3125. The plurality of single-rod holding holes 3122 and the double-rod connection grooves 3121 are distributed in an annular manner and staggered along the surface of the support ring 3125. The inner wall of the double-rod connection groove 3121 is fixedly connected to the surface of the adjacent reinforcement support strip 3112 close to the end, the single-rod holding hole 3122 is fixedly connected to the surface of the adjacent reinforcement support strip 3112 close to the middle, and the inner wall of the double-rod connection groove 3121 The single-rod holding hole 3122 is fixedly connected to the surface of the adjacent reinforcing support strip 3112 near the end, the single-rod holding hole 3122 is fixedly connected to the surface of the adjacent reinforcing support strip 3112 near the middle, an annular groove 3123 is provided inside the support ring 3125, a supporting circular ring 3124 is fixedly connected to the inner wall of the annular groove 3123, an embedded connecting block 3126 is fixedly connected inside the single-rod holding hole 3122, the embedded connecting block 3126 is welded to the surface of the adjacent supporting circular ring 3124 and the internal reinforcing rib 3111, the side supporting block 314 is fixedly connected to the surface of the drainage pipe body 100, and the end of the side supporting block 314 is fixedly connected to the surface of the adjacent reinforcing support strip 3112;

[0041] During use of the device, when high negative pressure suction is generated inside the drainage pipe body 100, the multiple support rings 3125 will form a reinforced support effect on the drainage pipe body 100, and the multiple support rings 3125 will separate the surface of the drainage pipe body 100 into multiple short tubes, thereby increasing the high negative pressure support effect on the drainage pipe body 100. At the same time, the reinforcing support strips 3112 can form a linear support for the short tubes, so that the drainage pipe body 100 between the two support rings 3125 can maintain a good support effect under the action of the reinforcing support strips 3112. The double-rod connecting groove 3121 can position and fix the end of the reinforcing support strip 3112, thereby maintaining the linear support effect of the reinforcing support strip 3112 on the drainage pipe body 100. At the same time, the single The rod supporting hole 3122 is connected to the internal reinforcing rib 3111 through the embedded connecting block 3126, so that the supporting ring 3124 can be supported by the internal reinforcing rib 3111 inside the reinforcing support bar 3112, and the embedded connecting block 3126 is for the middle part of the internal reinforcing rib 3111, which helps to maintain the effect of the reinforcing support bar 3112 on supporting the high negative pressure of the drainage pipe body 100. The multiple reinforcing rods 311 are distributed in a spiral shape, so that when the drainage pipe body 100 is subjected to high negative pressure, its surface will not be supported in a single direction, and the combination of the three groups of reinforcing rods 311 can play a continuous overall supporting effect on the surface of the drainage pipe body 100, thereby avoiding the drainage pipe body 100 from collapsing due to the high negative pressure.

[0042] The arc support frame 313 is located above the drainage pipe body 100 to avoid excessive vertical force on the pipe body under the influence of gravity. The upper end of the pipe body is reinforced by the arrangement of the arc support frame 313. The staggered arrangement of the arc support frame 313 improves the stability of the support. Since the upper end surface of the arc support frame 313 is arc-shaped, the drainage pipe body 100 is relieved from collapsing inward due to high negative pressure. Under the action of the side support block 314, a high negative pressure support effect is formed on the side of the drainage pipe body 100, avoiding the situation where both sides of the drainage pipe body 100 are affected by high negative pressure and produce large deformation. The number of side support blocks 314 is multiple and they are evenly distributed between adjacent reinforcement rings 312.

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.11 , Fig.12 As shown, the inner-pipe pressure-resistant component 320 includes a plurality of positioning rings 325, a plurality of deformable arc rubber plates 321 and positioning inner ribs 322. The plurality of positioning rings 325 are fixedly connected to the inner wall of the drainage pipe body 100. The plurality of positioning rings 325 are evenly distributed in a straight line along the inner wall of the drainage pipe body 100. The deformable arc rubber plates 321 are fixedly connected between adjacent positioning rings 325. The plurality of positioning inner ribs 322 are fixedly connected to one side of the positioning rings 325. The surface of the positioning inner ribs 322 is aligned with the inner wall of the drainage pipe body 100. The surface of the deformable arc rubber plate 321 is fixedly connected, and a plurality of positioning inner ribs 322 are combined to form a spiral shape. A plurality of fixed arc plates 323 are arranged between adjacent positioning inner ribs 322. The fixed arc plates 323 are fixedly connected to one side of the positioning ring 325. The plurality of fixed arc plates 323 are evenly distributed along the arc. A plurality of retractable elastic bands 324 are fixedly connected to the surface of the deformable arc rubber plate 321 close to the drainage pipe body 100. The retractable elastic bands 324 and the fixed arc plates 323 are staggeredly distributed.

[0044] When the device is in normal operation, the three axial positioning inner ribs 322 cooperate with the positioning ring 325, so that the deformable arc rubber plate 321 forms a concentric circle with the drainage pipe body 100, wherein the material of the deformable arc rubber plate 321 is a silicone material component that can be deformed and not easy to break, and the medium is guided and transported inside the deformable arc rubber plate 321. When the internal pressure of the drainage pipe body 100 is negative pressure, the three axial deformable arc rubber plates 321 are deformed. At this time, the deformed deformable arc rubber plates 321 are combined to form a shape similar to a Leroy triangle. At the same time, multiple longitudinal deformable arc rubber plates 321 are combined to form a spiral shape, so that the medium flow channel is guided by the deformable arc rubber plate 321. During the transportation process, the medium is swung toward the inner wall of the drainage pipe body 100, and the medium is transported. The swinging of the material offsets the inward collapse of part of the drainage pipe body 100 under the action of negative pressure, thereby improving the resistance effect of the drainage pipe body 100 to high negative pressure. When the drainage pipe body 100 is under long distance, the deformable arc rubber plate 321 contacts the fixed arc plate 323 to generate negative pressure, so that the deformable arc rubber plate 321 forms a ring, and the combination of multiple deformable arc rubber plates 321 forms a tube. When negative pressure is generated inside the drainage pipe body 100, the deformable arc rubber plate 321 approaches the center line of the drainage pipe body 100 under the action of pressure. At this time, multiple retractable elastic bands 324 are pulled and extended by the movement of the deformable arc rubber plate 321. Since the positioning inner ribs 322 position the deformable arc rubber plate 321, the deformation state of the deformable arc rubber plate 321 is maintained;

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig. 9 , Fig.10As shown, the internal pressure-resistant component 330 includes a plurality of first assembly frames 331 and a second assembly frame 332. The plurality of first assembly frames 331 are embedded and installed inside the drainage pipe body 100. The plurality of first assembly frames 331 are distributed in a ring shape along the surface of the drainage pipe body 100. The plurality of second assembly frames 332 are sleeved on the outside of the first assembly frames 331. The first assembly frames 331 are spirally arranged along the surface of the drainage pipe body 100. The spiral direction of the second assembly frames 332 is opposite to that of the first assembly frames 331. The first assembly frame 331 includes two groups of connecting cross bars 3311. The angle between the two groups of connecting cross bars 3311 is ninety degrees. An arc-shaped inclined rod 3312 is fixedly connected between adjacent connecting cross bars 3311. The arc-shaped inclined rod 3312 is arc-shaped along the surface of the drainage pipe body 100. The central axis of the plurality of first combination frames 331 coincides with the central axis of the plurality of second combination frames 332 and the drainage pipe body 100, wherein the plurality of arc-shaped inclined rods 3312 are combined to form a dense annular support, and the annular supports of the first combination frames 331 and the annular supports of the second combination frames 332 are staggered, and the annular supports on the same horizontal line are connected by adjacent connecting cross bars 3311, thereby reducing the degree of deformation of the drainage pipe body 100 when subjected to high negative pressure.

[0046] Working principle: when high negative pressure is generated inside the drainage pipe body 100, the three axial deformation arc rubber plates 321 are deformed, and multiple longitudinal deformation arc rubber plates 321 are combined to form a spiral shape. During transportation, the medium is swung toward the inner wall of the drainage pipe body 100, and multiple support rings 3125 strengthen the support of the drainage pipe body 100. The strengthening support bar 3112 forms a linear support effect on the drainage pipe body 100. The two support rings 3125 cooperate with the strengthening support bar 3112 to support the surface of the drainage pipe body 100. The double-rod connecting groove 3121 positions the end of the strengthening support bar 3112. The single-rod supporting hole 3122 connects the support ring 3124 with the internal reinforcement rib 3111 through the embedded connecting block 3126. The internal reinforcement ribs 3111 inside the reinforcing support strip 3112 play a supporting role, and the multiple reinforcement rods 311 are spirally distributed. With the combination of three groups of reinforcement rods 311, a continuous overall supporting effect can be exerted on the surface of the drainage pipe body 100. The arc-shaped support frame 313 prevents the pipe body from being subjected to excessive vertical force under the influence of gravity. The side support block 314 forms an auxiliary support for the side of the drainage pipe body 100. The multiple first combination frames 331 inside the drainage pipe body 100 coincide with the multiple second combination frames 332 and the central axis of the drainage pipe body 100. The multiple arc-shaped inclined rods 3312 are combined to form a dense annular support to ensure the stability of the drainage pipe body 100 when working in a high negative pressure state.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A HDPE drainage pipe with high negative pressure resistance function, characterized in that: include: A drainage pipe body (100), wherein the surface of the drainage pipe body (100) is covered with an external protective sleeve (200), and the external protective sleeve (200) is in the shape of a bamboo joint; A pressure-resistant mechanism (300), wherein the pressure-resistant mechanism (300) is embedded and installed inside the external protective cover (200), and the surface of the pressure-resistant mechanism (300) extends to the inner wall of the drainage pipe body (100); The pressure-resistant mechanism (300) comprises an external pressure-resistant component (310) arranged on the surface of the drainage pipe body (100), the external pressure-resistant component (310) is embedded in the interior of the external protective cover (200), an in-pipe pressure-resistant component (320) is arranged on the inner side of the external pressure-resistant component (310), the in-pipe pressure-resistant component (320) is installed on the inner wall of the drainage pipe body (100), an internal pressure-resistant component (330) is arranged between the in-pipe pressure-resistant component (320) and the external pressure-resistant component (310), and the internal pressure-resistant component (330) is located inside the drainage pipe body (100).

2. The HDPE drainage pipe with high negative pressure resistance function according to claim 1 is characterized in that: The external pressure-resistant component (310) comprises a plurality of groups of reinforcing rods (311) fixedly connected to the surface of the drainage pipe body (100), the plurality of groups of reinforcing rods (311) being evenly distributed in a ring shape along the surface of the drainage pipe body (100), the surface of the reinforcing rods (311) being sleeved with a plurality of reinforcing rings (312), the reinforcing rings (312) being fixedly connected to the surface of the drainage pipe body (100), two arc-shaped support frames (313) being arranged between adjacent reinforcing rings (312), the two arc-shaped support frames (313) being fixedly connected to the upper and lower arc-shaped surfaces of the drainage pipe body (100), respectively; The reinforcing rod (311) comprises a plurality of reinforcing support strips (3112) fixedly connected to the surface of the drainage pipe body (100); the inner wall of the reinforcing support strip (3112) is fixedly connected with an internal reinforcing rib (3111); the plurality of reinforcing support strips (3112) are evenly distributed in a spiral shape along the surface of the drainage pipe body (100); the arc-shaped support frame (313) is in a grid shape; adjacent reinforcing support strips (3112) penetrate the arc-shaped support frame (313) and are fixedly connected to the surface of the arc-shaped support frame (313); and a side support block (314) is provided between the upper arc-shaped support frame (313) and the lower arc-shaped support frame (313).

3. The HDPE drainage pipe with high negative pressure resistance function according to claim 1 is characterized in that: The in-pipe pressure-resistant component (320) comprises a plurality of positioning rings (325) fixedly connected to the inner wall of the drainage pipe body (100); the plurality of positioning rings (325) are evenly distributed in a straight line along the inner wall of the drainage pipe body (100); a deformable arc rubber plate (321) is fixedly connected between adjacent positioning rings (325); a plurality of positioning inner ribs (322) are fixedly connected to one side of the positioning rings (325); the surface of the positioning inner ribs (322) is fixedly connected to the surface of the deformable arc rubber plate (321); and the plurality of positioning inner ribs (322) are combined to form a spiral shape.

4. The HDPE drainage pipe with high negative pressure resistance function according to claim 1 is characterized in that: The internal pressure-resistant component (330) comprises a plurality of first assembly frames (331) embedded and installed inside the drainage pipe body (100), wherein the plurality of first assembly frames (331) are distributed in a ring shape along the surface of the drainage pipe body (100), and a plurality of second assembly frames (332) are sleeved outside the first assembly frames (331), wherein the first assembly frames (331) are spirally arranged along the surface of the drainage pipe body (100), and the spiral direction of the second assembly frames (332) is opposite to that of the first assembly frames (331).

5. The HDPE drainage pipe with high negative pressure resistance function according to claim 2 is characterized in that: The reinforcement ring (312) comprises a support ring (3125) fixedly connected to the surface of the drainage pipe body (100); a plurality of double-rod connection grooves (3121) are provided on the surface of the support ring (3125) close to the drainage pipe body (100); a plurality of single-rod supporting holes (3122) are provided on the side surface of the support ring (3125); the plurality of single-rod supporting holes (3122) and the double-rod connection grooves (3121) are distributed in an annular manner and staggered along the surface of the support ring (3125); the inner wall of the double-rod connection groove (3121) is fixedly connected to the surface of the adjacent reinforcement support strip (3112) close to the end; and the single-rod supporting hole (3122) is fixedly connected to the surface of the adjacent reinforcement support strip (3112) close to the middle.

6. The HDPE drainage pipe with high negative pressure resistance function according to claim 3 is characterized in that: A plurality of fixed arc plates (323) are arranged between adjacent positioning inner ribs (322); the fixed arc plates (323) are fixedly connected to one side of the positioning circular ring (325); the plurality of fixed arc plates (323) are evenly distributed along the circular arc; a plurality of retractable elastic bands (324) are fixedly connected to the surface of the deformable arc rubber plate (321) close to the drainage pipe body (100); the retractable elastic bands (324) and the fixed arc plates (323) are staggeredly distributed.

7. The HDPE drainage pipe with high negative pressure resistance function according to claim 5, characterized in that: An annular groove (3123) is provided inside the support ring (3125), and a supporting circular ring (3124) is fixedly connected to the inner wall of the annular groove (3123).

8. The HDPE drainage pipe with high negative pressure resistance function according to claim 7, characterized in that: An embedded connection block (3126) is fixedly connected inside the single rod supporting hole (3122), and the embedded connection block (3126) is welded to the surface of the adjacent supporting ring (3124) and the internal reinforcing rib (3111).

9. The HDPE drainage pipe with high negative pressure resistance function according to claim 5, characterized in that: The side support block (314) is fixedly connected to the surface of the drainage pipe body (100), and the end of the side support block (314) is fixedly connected to the surface of the adjacent reinforcing support strip (3112).

10. The HDPE drainage pipe with high negative pressure resistance function according to claim 4, characterized in that: The first assembly frame (331) comprises two groups of connecting cross bars (3311), the angle between the two groups of connecting cross bars (3311) is ninety degrees, and arc-shaped oblique bars (3312) are fixedly connected between adjacent connecting cross bars (3311), and the arc-shaped oblique bars (3312) are arc-shaped along the surface of the drainage pipe body (100).

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