CN219120075U - Connection structure of nodular cast iron pipe and plastic inspection shaft - Google Patents
Connection structure of nodular cast iron pipe and plastic inspection shaft Download PDFInfo
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- CN219120075U CN219120075U CN202223074775.2U CN202223074775U CN219120075U CN 219120075 U CN219120075 U CN 219120075U CN 202223074775 U CN202223074775 U CN 202223074775U CN 219120075 U CN219120075 U CN 219120075U
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Abstract
The utility model relates to a connection structure of a ductile cast iron pipe and a plastic inspection well, wherein the plastic inspection well is connected with the ductile cast iron pipe through a polyethylene steel belt reinforced drain pipe, one end of the polyethylene steel belt reinforced drain pipe is connected with a lateral pipe of the plastic inspection well through a heat shrinkage pipe, and the other end of the polyethylene steel belt reinforced drain pipe is connected with the ductile cast iron pipe through a flange; the plastic inspection well and the ductile cast iron pipe are supported by the bottom support structure. According to the utility model, the polyethylene steel strip reinforced drain pipe is additionally arranged between the plastic inspection well and the ductile cast iron pipe, so that the connection of the pipe and the integrated inspection well is effectively reinforced and fastened, and the high-quality connection requirement is met.
Description
Technical Field
The utility model relates to the field of underground pipelines, in particular to a connection structure of a ductile cast iron pipe and a plastic inspection well.
Background
Among the underground pipe network systems, there is a city water supply pipe system, and a pipeline for conveying tap water adopts a ductile cast iron pipe, and the ductile cast iron is an ideal material for selecting the tap water pipeline. In addition, in order to ensure the stability of long-distance water supply pipeline transportation, the inspection well is generally arranged at the junction, the turning position, the pipe diameter or the gradient change position of the pipeline; through the inspection shaft, can make things convenient for the staff to regularly inspect the condition in the pipeline to guarantee the stability of water supply pipeline transportation.
The inspection well is made of plastic and ductile cast iron, wherein the plastic integrated inspection well is formed by plastic through one-time injection molding, the material cost is lower, the yield is higher, and therefore people hope to use the plastic integrated inspection well.
However, in actual use, the nodular cast iron inspection well and the nodular cast iron pipe are adopted, and the materials of the nodular cast iron inspection well and the nodular cast iron pipe are the same, so that the matching degree is better in connection, and the structural consistency and stability are better. The plastic inspection well and the ductile cast iron pipe are inevitably transformed in the connecting process due to different materials, and if the ductile cast iron pipe is directly connected to the plastic inspection well, the connecting part is easy to loosen, so that water leakage is caused.
Therefore, how to solve the connection problem between the ductile cast iron pipe and the plastic inspection well and improve the connection quality of pipelines with different materials and the inspection well becomes a problem to be solved in the industry.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a connecting structure of a ductile cast iron pipe and a plastic inspection well.
The technical scheme of the utility model is as follows:
the utility model provides a connection structure of nodular cast iron pipe and plastic inspection shaft, its characterized in that, plastic inspection shaft passes through polyethylene steel band reinforcing drain pipe and nodular cast iron union coupling, polyethylene steel band reinforcing drain pipe one end is through the side direction pipe of pyrocondensation union coupling plastic inspection shaft, polyethylene steel band reinforcing drain pipe other end passes through flange joint nodular cast iron pipe.
The utility model according to the above scheme is characterized by further comprising a bottom support structure positioned below the plastic inspection well and the ductile cast iron pipe, wherein the bottom support structure is used for supporting the plastic inspection well and the ductile cast iron pipe.
The utility model according to the scheme is characterized in that the bottom supporting structure comprises concrete piers and supporting steel structures, the two concrete piers are located below the end parts of the ductile cast iron pipes, the supporting steel structures comprise I-steel brackets connected with the concrete piers at two sides, and the steel structures are located on the two I-steel brackets.
Further, the end part of the I-shaped steel bracket is connected with the inner side surface of the concrete buttress through an embedded plate.
Further, the embedded plate is fixed on the concrete buttress through a chemical anchor bolt.
Further, the diameter of the chemical anchor bolt is 16 mm, and the length of the chemical anchor bolt is not less than 8 times of the diameter length of the chemical anchor bolt.
Further, two parallel I-steel brackets are arranged between the tops of the two concrete buttresses.
Further, the width of the steel plate is equal to the width of the bottom of the main shaft of the plastic inspection well.
Further, the distance between the two concrete buttresses at the two sides of the plastic inspection well is 3200-3500 mm.
Further, the heights of the two concrete buttresses at the two sides of the plastic inspection well are equal.
The utility model according to the above scheme is characterized in that the end part of the polyethylene steel belt reinforced drain pipe is sleeved on the lateral pipe of the plastic inspection well, and the overlapping width of the polyethylene steel belt reinforced drain pipe and the end part of the lateral pipe is 4-5 cm.
Further, the width of the heat shrinkage pipe is larger than the overlapping width of the polyethylene steel belt reinforced drain pipe and the end part of the lateral pipe.
The utility model according to the scheme is characterized in that a nitrile rubber ring for sealing is arranged between the polyethylene steel belt reinforced drain pipe and the lateral pipe of the plastic inspection well.
The utility model according to the scheme has the beneficial effects that:
according to the utility model, the polyethylene steel strip reinforced drain pipe is additionally arranged between the plastic inspection well and the ductile cast iron pipe, the polyethylene steel strip reinforced drain pipe plays a role of a middle connecting piece, one side of the polyethylene steel strip reinforced drain pipe can be directly sleeved with a lateral pipe of the plastic inspection well and is fixed by adopting a heat shrinkage pipe, and the other side of the polyethylene steel strip reinforced drain pipe can be fixed with the ductile cast iron pipe by arranging the flange, so that the problem of connection between the ductile cast iron pipe and different materials of the plastic inspection well is solved, and the connection quality is high; in addition, the adopted polyethylene steel belt reinforced drain pipe has strong structure and is not easy to damage. Therefore, the connecting structure of the utility model has an effective reinforcing and fastening function for the connection of the pipeline and the integrated inspection well, and achieves the connection requirement of high quality.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the joint between a plastic manhole and a polyethylene steel strip reinforced drain pipe in the utility model;
FIG. 3 is a schematic view of a bottom support structure according to the present utility model.
In the figure, 1, a plastic inspection well; 11. a main wellbore; 12. a lateral tube; 121. a nitrile rubber ring; 13. a ventilation pipe;
2. polyethylene steel band reinforced drain pipe; 3. a ductile iron pipe; 4. a heat shrinkage tube; 5. a flange;
6. a concrete buttress; 7. an I-steel bracket; 8. embedding a plate; 9. and (3) a steel plate.
Detailed Description
For a better understanding of the objects, technical solutions and technical effects of the present utility model, the present utility model will be further explained below with reference to the drawings and examples. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, it is stated that the embodiments described below are only for explaining the present utility model and are not intended to limit the present utility model.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present.
The direction orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is commonly put when the product of the application is used, or the orientation or positional relationship which is commonly understood by those skilled in the art, or the orientation or positional relationship which is commonly put when the product of the application is used, only for convenience of description of the application and simplification of description, and is not intended to indicate or imply that the device or element to be referred must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the application.
As shown in fig. 1 and 2, the utility model also provides a connection structure of a ductile cast iron pipe and a plastic inspection well, wherein the ductile cast iron pipe 3 is connected with the plastic inspection well 1 through a polyethylene steel strip reinforced drain pipe 2, one end of the polyethylene steel strip reinforced drain pipe 2 is connected with the ductile cast iron pipe 3 through a flange 5, and the other end of the polyethylene steel strip reinforced drain pipe 2 is connected with a lateral pipe 12 of the plastic inspection well 1 through a heat shrink pipe 4.
In the utility model, a plastic inspection well 1 is integrally injection molded and comprises a main well barrel 11 with a symmetrical structure, two lateral pipes 12 are respectively arranged on two sides of the main well barrel 11, the two lateral pipes are respectively connected with spheroidal graphite cast iron pipes 3 on the same side through a polyethylene steel belt reinforced drain pipe 2, and water flows from the spheroidal graphite cast iron pipe 3 on one side to the spheroidal graphite cast iron pipe 3 on the other side through the plastic inspection well 1. The top of main pit shaft 11 is equipped with openable closeable well lid, and constructor opens the well lid, can look over the pipeline internal conditions of this junction, in time discovers unexpected conditions such as seepage or jam of water pipeline node department, in time solves the problem, ensures the continuous operation of underground pipe network.
In the utility model, the top of one side of the main well barrel 11 is provided with the vent pipe 13, which can be used for discharging toxic and harmful gas in the pipeline so as to meet the sanitary requirement in the pipeline; and the air in the pipeline system can be circulated, so that the pressure is stable.
As shown in fig. 3, in the present utility model, a bottom support structure is further included below the plastic inspection well 1 and the ductile cast iron pipe 3, and the bottom support structure is used to support the plastic inspection well 1 and the ductile cast iron pipe 3. The bottom supporting structure comprises concrete buttresses 6 and supporting steel structures, the two concrete buttresses 6 are located below the end portions of the nodular cast iron pipes 3, the supporting steel structures comprise I-shaped steel supports 7 connected with the concrete buttresses 6 on two sides, and the bottom supporting structure further comprises steel plates 9 located on the two I-shaped steel supports 7.
The end part of the I-steel bracket 7 is connected with the inner side surface of the concrete buttress 6 through an embedded plate 8. The embedded plate 8 is fixed on the concrete buttress 6 through a chemical anchor bolt. In a specific embodiment, the diameter of the chemical anchor bolt is 16 mm, the length of the chemical anchor bolt is not less than 8 times of the diameter length of the chemical anchor bolt, namely, is more than 128 mm, and the connection firmness of the embedded plate on the concrete buttress is ensured, so that the supporting force of the I-shaped steel bracket is ensured, and the integrated inspection well is stably supported.
Two parallel I-steel brackets 7 are arranged between the tops of the two concrete buttresses 6. The width of the steel plate 9 is equal to the width of the bottom of the main shaft 11 of the plastic inspection well 1, so that the plastic inspection well 1 can be stably placed on the steel plate 9. The distance between the two concrete buttresses 6 at the two sides of the plastic inspection well 1 is 3200-3500 mm; the two concrete buttresses 6 are equal in height and identical in width.
In the utility model, the end part of the polyethylene steel belt reinforced drain pipe 2 is sleeved on the lateral pipe 12 of the plastic inspection well 1, and the overlapping width of the polyethylene steel belt reinforced drain pipe 2 and the end part of the lateral pipe 12 is 4-5 cm. The width of the heat shrinkage tube 4 is larger than the overlapping width of the end parts of the polyethylene steel strip reinforced drain pipe 2 and the lateral pipe 12, namely, the width of the heat shrinkage tube 4 can cover the overlapping area of the polyethylene steel strip reinforced drain pipe 2 and the lateral pipe 12 after sleeving.
In the utility model, a nitrile rubber ring 121 for sealing is arranged between the polyethylene steel belt reinforced drain pipe 2 and the lateral pipe 12 of the plastic inspection well 1, so that the tightness between the polyethylene steel belt reinforced drain pipe 2 and the lateral pipe 12 is improved.
In order to better understand the scheme, the connecting method of the ductile cast iron pipe and the plastic inspection well comprises the following steps:
and 4, connecting the other end of the polyethylene steel strip reinforced drain pipe 2 with the end of the corresponding nodular cast iron pipe 3 through a flange 5.
In the utility model, the bottom supporting structure is manufactured in the step 1, and specifically comprises the following steps:
s101, pouring concrete buttresses 6 at two sides;
casting concrete buttresses 6 on two sides of a placement point of the plastic inspection well 1, wherein the heights of the concrete buttresses 6 on the two sides are equal and the widths are consistent; and the distance between the two concrete piers 6 is 3200-3500 mm.
S102, arranging an I-shaped steel bracket 7 between two concrete buttresses 6;
the method comprises the steps that pre-buried plates 8 are correspondingly arranged on opposite sides of two concrete buttresses 6, chemical anchor bolts are arranged on the pre-buried plates 8, and the pre-buried plates 8 are fixed on the concrete buttresses 6 through the chemical anchor bolts; the chemical anchor bolt is a high-strength anchor bolt taking vinyl resin as a main raw material, and the screw is cemented and fixed in a drilled hole of the concrete buttress 6 through a special chemical adhesive so as to realize the anchoring of the embedded plate 8. Two corresponding embedded plates 8 on the two concrete buttresses 6 are connected with an I-shaped steel bracket 7. In this embodiment, two parallel I-steel brackets 7 are provided between the tops of the two concrete piers 6.
In an alternative embodiment, the embedded plate 8 is a rectangular plate with the size of 260 mm by 230 mm, a circle of chemical anchors are arranged on the embedded plate 8, and the number of the chemical anchors is 8, and the diameter of each chemical anchor is 16 mm; the length of the chemical anchor bolt is not less than 128 mm so as to ensure the firmness of the embedded plate 8 on the concrete buttress 6.
S103, arranging a steel plate 9 on the I-steel bracket 7;
a steel plate 9 for supporting the plastic inspection well 1 is built between the two I-shaped steel brackets 7, the plastic inspection well 1 is placed on the steel plate 9 to be fixedly supported, the fixed plastic inspection well 1 is equivalent to the nodular cast iron pipes 3 on the two sides in height, namely, the center of the plastic inspection well 1 and the central line of the pipeline of the nodular cast iron pipes 3 are located at the same height. The width of the steel plate 9 is equal to the width of the bottom surface of the main shaft 11 of the plastic inspection well 1, so that the plastic inspection well 1 can be stably placed on the steel plate 9.
The utility model also comprises the step of strengthening the surfaces of the I-steel bracket 7 and the steel plate 9, and specifically comprises the following steps:
step A, rust removal treatment is carried out on the surface of a steel structure (namely the I-shaped steel bracket 7 and the steel plate 9);
step B, coating iron oxide red epoxy primer;
coating iron oxide red epoxy primer on the surface of the steel structure to increase the rust resistance of the steel structure;
step C, coating epoxy enamel;
epoxy enamel is coated, so that the acid resistance, alkali resistance and salt resistance of the steel structure are improved;
step D, coating aqueous acrylic emulsion;
coating aqueous acrylic emulsion improves the water resistance and weather resistance of the steel structure.
In the utility model, when the end part of the spheroidal graphite cast iron pipe 3 is placed in the step 2, the end part of the spheroidal graphite cast iron pipe 3 needs to extend out of the concrete buttress 6, so that a constructor can conveniently connect the spheroidal graphite cast iron pipe 3 with the polyethylene steel strip reinforced drain pipe 2.
In the step 3, the lateral pipe 12 of the plastic inspection well 1 and the polyethylene steel strip reinforced drain pipe 2 are fixedly connected by the heat shrinkage pipe 4, and the method comprises the following steps:
s301, sleeving a heat shrinkage tube 4 at the end part of a polyethylene steel belt reinforced drain pipe 2;
the caliber of the heat shrinkage tube 4 is larger than that of the polyethylene steel strip reinforced drain pipe 2, the heat shrinkage tube 4 is sleeved at the end part of the polyethylene steel strip reinforced drain pipe 2, and the heat shrinkage tube 4 is pulled to the end edge far away from the polyethylene steel strip reinforced drain pipe 2, so that the end part of the polyethylene steel strip reinforced drain pipe 2 is exposed. In the process of pulling the heat shrinkage tube 4, the protective paper on the inner wall of the heat shrinkage tube 4 cannot be damaged, and the cleanliness of the inner wall surface of the heat shrinkage tube 4 is maintained. The heat shrinkage pipe 4 adopted by the utility model is a common plastic heat shrinkage pipe, and is used for preheating and shrinking and fastening the joint between plastic pipes.
S302, polishing the outer surface of the end part of the polyethylene steel belt reinforced drain pipe 2;
and (3) polishing the outer wall of the exposed end part of the polyethylene steel belt reinforced drain pipe 2 by adopting a steel wire brush, and wiping the polished area by using clean cloth.
S303, sleeving a nitrile rubber ring 121 at the end part of the lateral pipe 12 of the plastic inspection well 1;
s304, sleeving the end part of the polyethylene steel belt reinforced drain pipe 2 on the end part of the lateral pipe 12, and wrapping the nitrile rubber ring 121;
preheating the end part of the polyethylene steel strip reinforced drain pipe 2 and the end part of the lateral pipe 12 so that the surface temperature of the two pipes reaches more than 40 ℃ and is not more than 50 ℃;
the polyethylene steel band reinforced drain pipe 2 is sleeved on the lateral pipe 12 with the nitrile rubber ring 121, and the overlapping width of the polyethylene steel band reinforced drain pipe 2 and the end part of the lateral pipe 12 after the sleeve connection is 4-5 cm;
s305, coating the polyethylene steel strip reinforced drain pipe 2 and the sleeving part of the lateral pipe 12 by the heat shrinkage pipe 4;
and the outer end edge of the heat shrinkage tube 4 is pulled until the outer end edge of the heat shrinkage tube 4 extends out of the polyethylene steel strip reinforced drain pipe 2, and the polishing area on the polyethylene steel strip reinforced drain pipe 2 is covered by the heat shrinkage tube 4.
S306, baking the heat shrinkage tube 4 to finish fastening;
the protective paper in the heat shrink tube 4 is removed, and the heat shrink tube 4 is baked gradually from one end near the lateral tube 12 to the other end along the periphery.
The lateral pipes 12 on both sides of the plastic inspection well 1 are sleeved with the heat shrinkage pipe 4 by adopting the steps 301 to 306.
In the utility model, in step 4, a polyethylene steel strip reinforced drain pipe 2 and a corresponding ductile cast iron pipe 3 are connected, and the method specifically comprises the following steps:
s401, checking the flatness of the outer port of the polyethylene steel strip reinforced drain pipe 2;
the caliber of the polyethylene steel strip reinforced drain pipe 2 is consistent with that of the nodular cast iron pipe 3, so that the two pipes can be butted together, and before the butt joint, the flatness of the port of the polyethylene steel strip reinforced drain pipe 2 is checked, wherein the flatness requirement is that the maximum gap at the joint is less than 5 mm after the port of the polyethylene steel strip reinforced drain pipe 2 is spliced at the port of the nodular cast iron pipe 3; if the requirement is not met, the end opening of the polyethylene steel strip reinforced drain pipe 2 is polished and trimmed.
S402, abutting the polyethylene steel band reinforced drain pipe 2 with the port of the nodular cast iron pipe 3, and connecting and fixing the polyethylene steel band reinforced drain pipe through the flange 5;
the flange sleeve is arranged outside the end part of the polyethylene steel band reinforced drain pipe 2, the short pipe with the flange plate is arranged on the end part of the spheroidal graphite cast iron pipe, the port of the polyethylene steel band reinforced drain pipe 2 is aligned with the port of the spheroidal graphite cast iron pipe 3, the hole of the flange sleeve on the polyethylene steel band reinforced drain pipe 2 is aligned with the hole of the flange plate on the spheroidal graphite cast iron pipe, and finally, the two pipes are fastened together by screwing bolts.
In an alternative embodiment, the length of the polyethylene steel strip reinforced drain pipe 2 is greater than 500 mm, a cushion block (not shown in the figure) is arranged below the middle part of the polyethylene steel strip reinforced drain pipe 2, and the cushion block is provided with a U-shaped notch which is matched with the polyethylene steel strip reinforced drain pipe 2, and the cushion block is arranged on two parallel I-shaped steel brackets 7. By arranging the cushion block, the stability of the polyethylene steel belt reinforced drain pipe 2 can be increased, and the middle part of the pipe can be prevented from collapsing.
Because the polyethylene steel strip reinforced drain pipe is a spiral corrugated pipe, the effect of arranging the flange sleeve at the end part of the drain pipe is more firm, and the firmness of flange connection with one side of the nodular cast iron pipe is improved; and the polyethylene steel belt reinforced drain pipe is connected with the plastic inspection well, and can be directly sleeved with a plastic pipe and fixed by a heat shrink pipe. The utility model has the advantages that the polyethylene steel strip reinforced drain pipe is additionally arranged between the plastic inspection well and the ductile cast iron pipe, the polyethylene steel strip reinforced drain pipe plays the role of a middle connecting piece, one side of the polyethylene steel strip reinforced drain pipe can be directly sleeved with the lateral pipe of the plastic inspection well and is fixed by adopting the heat shrinkage pipe, and the other side of the polyethylene steel strip reinforced drain pipe can be fixed with the ductile cast iron pipe by arranging the flange, so that the problem of connection between the ductile cast iron pipe and different materials of the plastic inspection well is solved, and the connection quality is high; in addition, the adopted polyethylene steel belt reinforced drain pipe has strong structure and is not easy to damage. Therefore, the connecting structure provided by the utility model has an effective reinforcing and fastening function on the connection of the pipeline and the integrated inspection well, and achieves the high-quality connection requirement.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. The utility model provides a connection structure of nodular cast iron pipe and plastic inspection shaft, its characterized in that, plastic inspection shaft passes through polyethylene steel band reinforcing drain pipe and nodular cast iron union coupling, polyethylene steel band reinforcing drain pipe one end is through the side direction pipe of pyrocondensation union coupling plastic inspection shaft, polyethylene steel band reinforcing drain pipe other end passes through flange joint nodular cast iron pipe.
2. The connection structure of a ductile iron pipe and a plastic inspection well according to claim 1 further comprising a bottom support structure positioned below the plastic inspection well and the ductile iron pipe for supporting the plastic inspection well and the ductile iron pipe.
3. The connection structure of a ductile iron pipe and a plastic inspection well according to claim 2 wherein the bottom support structure comprises a concrete buttress and a supporting steel structure, the two concrete buttresses are positioned below the ends of the ductile iron pipe, the supporting steel structure comprises a i-steel bracket connecting the concrete buttresses at two sides, and further comprises steel plates positioned on the two i-steel brackets.
4. A connection structure of a ductile iron pipe and a plastic inspection well according to claim 3 wherein two parallel i-steel brackets are provided between the tops of the two concrete buttresses.
5. The connection structure of ductile iron pipe and plastic inspection well according to claim 3 wherein the end of the i-steel bracket is connected with the inner side of the concrete buttress by a pre-buried plate.
6. The connection structure of ductile iron pipe and plastic inspection well according to claim 5 wherein the pre-buried plate is fixed on the concrete pier by a chemical anchor bolt.
7. A connection structure of a ductile iron pipe and a plastic inspection well according to claim 3 wherein the width of the steel plate is equal to the width of the main well barrel bottom of the plastic inspection well.
8. The connection structure of the ductile cast iron pipe and the plastic inspection well according to claim 1, wherein the end part of the polyethylene steel strip reinforced drain pipe is sleeved on the lateral pipe of the plastic inspection well, and the overlapping width of the polyethylene steel strip reinforced drain pipe and the end part of the lateral pipe is 4-5 cm.
9. The connection structure of the ductile iron pipe and the plastic inspection well according to claim 8 wherein the heat shrinkage pipe has a width greater than an overlapping width of the polyethylene steel strip reinforced drain pipe and the end portion of the lateral pipe.
10. The connection structure of the ductile cast iron pipe and the plastic inspection well according to claim 1, wherein a nitrile rubber ring for sealing is arranged between the polyethylene steel strip reinforced drain pipe and the lateral pipe of the plastic inspection well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223074775.2U CN219120075U (en) | 2022-11-18 | 2022-11-18 | Connection structure of nodular cast iron pipe and plastic inspection shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223074775.2U CN219120075U (en) | 2022-11-18 | 2022-11-18 | Connection structure of nodular cast iron pipe and plastic inspection shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219120075U true CN219120075U (en) | 2023-06-02 |
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ID=86527455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223074775.2U Active CN219120075U (en) | 2022-11-18 | 2022-11-18 | Connection structure of nodular cast iron pipe and plastic inspection shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219120075U (en) |
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2022
- 2022-11-18 CN CN202223074775.2U patent/CN219120075U/en active Active
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