Novel self-locking drain pipe

Abstract

The utility model discloses a novel self-locking drain pipe which comprises a polyethylene dragging pipe joint, a cast iron male lock catch and a cast iron female lock catch. The cast iron male lock catch is of a tubular structure, and the cast iron male lock catch is coaxially arranged at the first end of the polyethylene dragging pipe joint and connected with the polyethylene dragging pipe joint in a sealed mode. The cast iron female lock catch is of a tubular structure, the cast iron female lock catch is coaxially arranged at the second end of the polyethylene dragging pipe joint and connected with the polyethylene dragging pipe joint in a sealed mode, and the cast iron female lock catch is used for being locked and connected with the cast iron male lock catch in a sealed mode, so that the multiple polyethylene dragging pipe joints are locked and connected through the cast iron male lock catch and the cast iron female lock catch. According to the utility model, the cast iron male lock catches and the cast iron female lock catches are arranged, so that a plurality of polyethylene dragging pipe joints are locked and connected through the cast iron male lock catches and the cast iron female lock catches, the connection between the pipe joints is enhanced, the probability of pipeline disjunction in the jacking and dragging process is greatly reduced, and the integrity of the pipeline is improved.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction, and in particular to a novel self-locking drainage pipe. Background Technology

[0002] Currently, most municipal engineering projects are located in densely populated urban areas, often facing the problem of limited working space. Drainage pipeline construction generally adopts the method of jacking up and dragging pipes. During construction, due to geological conditions, the use of ordinary pipe materials is prone to pipe section separation problems. Utility Model Content

[0003] This invention provides a novel self-locking drain pipe that can greatly reduce the probability of pipe disconnection during top dragging.

[0004] This utility model discloses a novel self-locking drain pipe, comprising a polyethylene pull-out pipe section, a cast iron male locking buckle, and a cast iron female locking buckle. The cast iron male locking buckle has a tubular structure and is coaxially disposed at the first end of the polyethylene pull-out pipe section, sealingly connecting to it. The cast iron female locking buckle also has a tubular structure and is coaxially disposed at the second end of the polyethylene pull-out pipe section, sealingly connecting to it. The female locking buckle is used to lock and seal with the male locking buckle, allowing multiple polyethylene pull-out pipe sections to be locked and connected via the male and female locking buckles.

[0005] In some embodiments, the inner circumferential surface of the cast iron female lock has a locking internal thread, and the outer circumferential surface of the cast iron male lock has a locking external thread. The locking external thread is used to mate with the locking internal thread, so that the cast iron female lock and the cast iron male lock are threadedly connected.

[0006] In some embodiments, an annular groove is formed in the second end of the polyethylene towing pipe section. The annular groove is coaxially arranged with the polyethylene towing pipe section. The annular groove has an annular limiting surface facing the opening of the second end of the polyethylene towing pipe section and an annular bottom surface perpendicularly connected to the annular limiting surface. The annular limiting surface is used to abut against the end face of the cast iron female lock, and the annular bottom surface is used to fit against the outer peripheral surface of the cast iron female lock, so that the cast iron female lock is inserted into the second end of the polyethylene towing pipe section. The cast iron female lock is axially positioned by the annular limiting surface and radially positioned by the annular bottom surface.

[0007] In some embodiments, the width of the annular limiting surface along its own radial direction is greater than the width of the end face of the cast iron female lock along its own radial direction, such that the first end face of the cast iron male lock threadedly connected to the cast iron female lock abuts against the annular limiting surface.

[0008] In some embodiments, the width of the annular bottom surface along its own axis is equal to the width of the outer peripheral surface of the cast iron female lock along its own axis, such that the first end face of the cast iron female lock abuts against the annular limiting surface, and the second end face of the cast iron female lock is flush with the second end face of the polyethylene drag pipe section.

[0009] In some embodiments, the end faces of two adjacent polyethylene drag pipe sections are fitted together by a cast iron male lock and a cast iron female lock.

[0010] In some embodiments, the inner diameters of both the cast iron male and female locking buckles are equal to the inner diameter of the polyethylene drag joint.

[0011] In some embodiments, the first end of the cast iron male lock has a fixed external thread, which is opposite to the locking external thread. The first end of the polyethylene towing pipe section has a fixed internal thread, which is used to cooperate with the fixed external thread, so that the first end of the cast iron male lock is threadedly connected to the first end of the polyethylene towing pipe section.

[0012] In some embodiments, the annular groove also has an annular fixing surface facing the annular limiting surface, the annular fixing surface being used to abut against the end face of the cast iron female lock, so that the cast iron female lock is axially positioned by the annular limiting surface and the annular fixing surface.

[0013] In some embodiments, the outer peripheral surface of the cast iron male latch has an annular fitting portion for fitting with the inner edge of the annular fixing surface.

[0014] A novel self-locking drainage pipe according to an embodiment of this utility model includes a polyethylene drag-along pipe section, a cast iron male locking buckle, and a cast iron female locking buckle. The cast iron male locking buckle has a tubular structure and is coaxially disposed at the first end of the polyethylene drag-along pipe section, sealingly connecting to it. The cast iron female locking buckle also has a tubular structure and is coaxially disposed at the second end of the polyethylene drag-along pipe section, sealingly connecting to it. The cast iron female locking buckle is used to lock and seal with the cast iron male locking buckle, allowing multiple polyethylene drag-along pipe sections to be locked and connected through the cast iron male and female locking buckles. This utility model, by setting cast iron male and female locking buckles, allows multiple polyethylene drag-along pipe sections to be locked and connected through these buckles, enhancing the connection between pipe sections, greatly reducing the probability of pipe disassembly during dragging, and improving the integrity of the pipeline. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a front view of a self-locking drain pipe in one embodiment of the present invention;

[0017] Figure 2 This is a side view of a self-locking drain pipe in one embodiment of the present invention;

[0018] Figure 3 This is a top view of a self-locking drain pipe in one embodiment of the present invention;

[0019] Figure 4 This is a cross-sectional view of a self-locking drain pipe in one embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure at the second end of the polyethylene drag tube section in one embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure at the second end of the polyethylene drag tube section in another embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of a cast iron male lock buckle in one embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] See Figure 1-7 The present invention discloses a novel self-locking drain pipe, comprising a polyethylene pull-out pipe section 1, a cast iron male locking buckle 1, and a cast iron female locking buckle 3.

[0025] Polyethylene tow pipe section 1 is used for drainage. The length and width of polyethylene tow pipe section 1 can be manufactured according to actual construction needs.

[0026] The cast iron male locking buckle 1 is used for connection between polyethylene towing pipe sections 1. The cast iron male locking buckle 1 has a tubular structure. The inner diameter of the cast iron male locking buckle 1 is equal to the inner diameter of the polyethylene towing pipe section 1. The length and width of the cast iron male locking buckle 1 can be manufactured according to actual construction needs. The cast iron male locking buckle 1 is coaxially installed at the first end of the polyethylene towing pipe section 1 and is sealed and connected to the polyethylene towing pipe section 1.

[0027] In order to achieve the connection between the cast iron male locking buckle 1 and the polyethylene drag pipe section 1, optionally, refer to Figure 4 The first end face of the cast iron male locking buckle 1 is directly fixed to the first end face of the polyethylene drag pipe section 1. Alternatively, see [reference needed]. Figure 7 The first end of the cast iron male locking buckle 1 has a fixed external thread 12, and the first end of the polyethylene towing pipe section 1 has a fixed internal thread. The fixed internal thread is used to mate with the fixed external thread 12, so that the first end of the cast iron male locking buckle 1 is threadedly connected to the first end of the polyethylene towing pipe section 1. In addition, the seal between the cast iron male locking buckle 1 and the polyethylene towing pipe section 1 can be achieved by using waterproof tape, which will not be elaborated here.

[0028] The cast iron female locking buckle 3 is used to lock and seal with the cast iron male locking buckle 1, realizing the connection between polyethylene towing pipe sections 1. The cast iron female locking buckle 3 is a tubular structure. The inner diameter of the cast iron female locking buckle 3 is equal to the inner diameter of the polyethylene towing pipe section 1. The length and width of the cast iron female locking buckle 3 can be manufactured according to actual construction needs. The cast iron female locking buckle 3 is coaxially set at the second end of the polyethylene towing pipe section 1 and is sealed and connected to the polyethylene towing pipe section 1 respectively. The above arrangement allows multiple polyethylene towing pipe sections 1 to be locked and connected through the cast iron male locking buckle 1 and the cast iron female locking buckle 3.

[0029] To achieve the connection between the cast iron female lock 3 and the cast iron male lock 1, please refer to... Figure 1 , 2 4. The inner circumferential surface of the cast iron female locking buckle 3 is provided with a locking internal thread 31, and the outer circumferential surface of the cast iron male locking buckle 1 is provided with a locking external thread 11. The locking external thread 11 is arranged in the opposite direction to the fixing external thread 12. The locking external thread 11 is used to mate with the locking internal thread 31, so that the cast iron female locking buckle 3 and the cast iron male locking buckle 1 are threadedly connected. In addition, the sealing between the cast iron female locking buckle 3 and the cast iron male locking buckle 1 can be achieved by using waterproof tape, which will not be elaborated here. Furthermore, the end faces of two adjacent polyethylene towing pipe sections 1 locked together by the cast iron male locking buckle 1 and the cast iron female locking buckle 3 are fitted together.

[0030] To achieve the connection between the cast iron female locking buckle 3 and the polyethylene drag pipe section 1, refer to... Figure 5An annular groove 21 is formed inside the second end of the polyethylene towing pipe section 1. The annular groove 21 is coaxially arranged with the polyethylene towing pipe section 1. The annular groove 21 has an annular limiting surface 211 facing the opening of the second end of the polyethylene towing pipe section 1 and an annular bottom surface 212 perpendicularly connected to the annular limiting surface 211. The annular limiting surface 211 is used to abut against the end face of the cast iron female locking buckle 3, and the annular bottom surface 212 is used to fit against the outer peripheral surface of the cast iron female locking buckle 3, so that the cast iron female locking buckle 3 is inserted into the second end of the polyethylene towing pipe section 1. The cast iron female locking buckle 3 is axially positioned by the annular limiting surface 211 and radially positioned by the annular bottom surface 212. In addition, the seal between the cast iron female locking buckle 3 and the polyethylene towing pipe section 1 can be achieved by using waterproof adhesive, which will not be elaborated here.

[0031] Furthermore, the width of the annular limiting surface 211 along its own radial direction is greater than the width of the end face of the cast iron female lock 3 along its own radial direction, so that the first end face of the cast iron male lock 1, which is threadedly connected to the cast iron female lock 3, abuts against the annular limiting surface 211. The width of the annular bottom surface 212 along its own axial direction is equal to the width of the outer circumferential surface of the cast iron female lock 3 along its own axial direction, so that the first end face of the cast iron female lock 3 abuts against the annular limiting surface 211, and the second end face of the cast iron female lock 3 is flush with the second end face of the polyethylene drag pipe section 1.

[0032] Optionally, see Figure 6 The annular groove 21 also has an annular fixing surface 213 facing the annular limiting surface 211. The annular fixing surface 213 is used to abut against the end face of the cast iron female lock 3, so that the cast iron female lock 3 is axially positioned by the annular limiting surface 211 and the annular fixing surface 213. Under the above conditions, optionally, the outer peripheral surface of the cast iron male lock 1 has an annular fitting portion, which is used to fit against the inner edge of the annular fixing surface 213.

[0033] With the above setup, during construction, after drilling and enlarging the guide hole, the pipe sections are manually connected during the jacking-up pipe operation to lock the male and female locking buckles before the pipe is pulled back. This self-locking drainage pipe enhances the connection between pipe sections, significantly reducing the probability of pipe disconnection during jacking-up and improving the overall integrity of the pipeline. This self-locking drainage pipe is mainly used in jacking-up pipe construction under complex geological conditions.

[0034] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel self-locking drain pipe, characterized in that, include: Polyethylene towing pipe section; The cast iron male locking buckle has a tubular structure and is coaxially disposed at the first end of the polyethylene towing pipe section, and is sealed and connected to the polyethylene towing pipe section respectively. The cast iron female locking buckle is a tubular structure. The cast iron female locking buckle is coaxially disposed at the second end of the polyethylene towing pipe section and is respectively sealed and connected to the polyethylene towing pipe section. The cast iron female locking buckle is used to lock and seal with the cast iron male locking buckle, so that multiple polyethylene towing pipe sections are locked and connected through the cast iron male locking buckle and the cast iron female locking buckle.

2. The self-locking drain pipe as described in claim 1, characterized in that, The inner circumferential surface of the cast iron female lock has a locking internal thread, and the outer circumferential surface of the cast iron male lock has a locking external thread. The locking external thread is used to cooperate with the locking internal thread, so that the cast iron female lock and the cast iron male lock are threadedly connected.

3. The self-locking drain pipe as described in claim 2, characterized in that, An annular groove is formed inside the second end of the polyethylene towing pipe section. The annular groove is coaxially arranged with the polyethylene towing pipe section. The annular groove has an annular limiting surface facing the opening of the second end of the polyethylene towing pipe section and an annular bottom surface perpendicularly connected to the annular limiting surface. The annular limiting surface is used to abut against the end face of the cast iron female lock, and the annular bottom surface is used to fit against the outer peripheral surface of the cast iron female lock, so that the cast iron female lock is inserted into the second end of the polyethylene towing pipe section. The cast iron female lock is axially positioned by the annular limiting surface and radially positioned by the annular bottom surface.

4. The self-locking drain pipe as described in claim 3, characterized in that, The width of the annular limiting surface along its own radial direction is greater than the width of the end face of the cast iron female lock along its own radial direction, so that the first end face of the cast iron male lock threadedly connected to the cast iron female lock abuts against the annular limiting surface.

5. The self-locking drain pipe as described in claim 3, characterized in that, The width of the annular bottom surface along its own axis is equal to the width of the outer circumference of the cast iron female lock along its own axis, such that the first end face of the cast iron female lock abuts against the annular limiting surface, and the second end face of the cast iron female lock is flush with the second end face of the polyethylene drag pipe section.

6. The self-locking drain pipe as described in claim 5, characterized in that, The end faces of two adjacent polyethylene towing pipe sections are fitted together by the cast iron male lock and the cast iron female lock.

7. The self-locking drain pipe as described in claim 1, characterized in that, The inner diameters of both the cast iron male and female locking buckles are equal to the inner diameter of the polyethylene drag pipe section.

8. The self-locking drain pipe as described in claim 2, characterized in that, The first end of the cast iron male lock has a fixed external thread, which is opposite to the locking external thread. The first end of the polyethylene towing pipe section has a fixed internal thread, which is used to cooperate with the fixed external thread, so that the first end of the cast iron male lock is threadedly connected to the first end of the polyethylene towing pipe section.

9. The self-locking drain pipe as described in claim 3, characterized in that, The annular groove also has an annular fixing surface facing the annular limiting surface. The annular fixing surface is used to abut against the end face of the cast iron female lock, so that the cast iron female lock is axially positioned by the annular limiting surface and the annular fixing surface.

10. The self-locking drain pipe as described in claim 9, characterized in that, The outer peripheral surface of the cast iron male lock has an annular fitting portion, which is used to fit against the inner edge of the annular fixing surface.

Images