A flexible socket and spigot joint for a rainwater sewer pipe and a method of assembling the same

Abstract

The application provides a rain and sewage pipe socket type flexible interface and an assembling method thereof, which comprises a first joint, a second joint and a filling arc plate, an outer side of the first joint is fixedly provided with a socket; a deformation groove is formed in an end of the second joint; the filling arc plate is arranged in the deformation groove, one end of the filling arc plate and the end of the first joint are provided with a first clamping part, the other end of the filling arc plate and the end of the second joint are provided with a second clamping part, and the first joint, the second joint and the filling arc plate are sealingly connected through clamping of the first clamping part and the second clamping part. The deformation groove is formed in the second joint, and the filling arc plate is arranged in the deformation groove, so that the second joint is connected in a sectional mode with the first joint and the filling arc plate, the interface is prevented from being cracked in the clamping process of the first clamping part and the second clamping part, and the overall sealing performance of the pipeline is ensured.

Description

Technical Field

[0001] This invention relates to the field of stormwater and sewage pipe technology, and in particular to a socket-type flexible joint for stormwater and sewage pipes and its assembly method. Background Technology

[0002] The interfaces for urban stormwater and sewage pipes are divided into socket interfaces, flat interfaces, and tongue and groove interfaces. Socket interfaces are widely used because they are easier to construct and more operable. In order to avoid pipe damage caused by trench settlement, stormwater and sewage pipes usually use flexible interfaces made of flexible materials such as plastic.

[0003] The invention patent with patent publication number CN115435173A discloses a pipe interface structure that facilitates sealing, including a spigot pipe body and a socket pipe body. The spigot pipe body has a spigot section, and the socket pipe body has a socket section. The outer side wall of the spigot section is provided with an annular tooth, and the inner side wall of the socket section is provided with an annular groove. At least one annular tooth is provided with an arc-shaped convex surface, and the annular groove is provided with a sealing surface tangent to the arc-shaped convex surface, and the position where the arc-shaped convex surface is tangent to the sealing surface is in close contact.

[0004] In the above technical solution, in order to improve the connection and sealing of the spigot and socket pipes, annular teeth and annular grooves are set at the port connection of the two. However, since the annular teeth will increase the outer diameter of the pipe, they will squeeze the inner wall of the pipe connected to them before they are inserted into the annular groove, which will cause the pipe joint to crack easily, affecting the overall sealing of the pipeline. Summary of the Invention

[0005] In view of this, the present invention proposes a socket-type flexible joint for rainwater and sewage pipes and its assembly method, which can avoid pipe joint cracking and ensure the overall sealing of the pipe.

[0006] The technical solution of this invention is implemented as follows: This invention provides a socket-type flexible interface for rainwater and sewage pipes, including a first joint, a second joint, and a filling arc plate, wherein,

[0007] A support sleeve is fixedly provided on the outer side of the first joint;

[0008] The end of the second connector is located inside the support cylinder and is sealed to it; the end of the second connector is provided with a deformation groove.

[0009] The filling arc plate is disposed in the deformation groove. One end of the filling arc plate and the end of the first connector are provided with a first snap-fit ​​part, and the other end of the filling arc plate and the end of the second connector are provided with a second snap-fit ​​part. The first connector, the second connector and the filling arc plate are connected by snap-fit ​​sealing through the first snap-fit ​​part and the second snap-fit ​​part, and form a continuous and sealed inner wall of the pipe.

[0010] Based on the above technical solutions, preferably, the deformation groove is located above the end of the second joint.

[0011] More preferably, the deformation groove includes a first arc groove and a second arc groove, both of which are formed at the end of the second joint and are continuously arranged.

[0012] More preferably, the opening depth of the first arc groove is greater than the opening depth of the second arc groove, the side of the first arc groove away from the second arc groove intersects with the center line of the second joint but is not perpendicular, and the side of the second arc groove away from the first arc groove is parallel to the center line of the second joint.

[0013] More preferably, the end of the first connector is provided with a fixing groove, and the fixing groove is provided with the first snap-fit ​​part. The filling arc plate and the fixing groove are sealed and connected by the snap-fit ​​of the first snap-fit ​​part and the second snap-fit ​​part.

[0014] More preferably, a limiting block is fixedly provided inside the support cylinder, and the limiting block abuts against one end of the filling arc plate near the second joint;

[0015] The end of the second connector is provided with a receiving groove, which engages with the limiting block.

[0016] Based on the above technical solutions, preferably, the end faces of the first connector, the second connector, and the filling arc plate are all inclined, the first snap-fit ​​part is a groove structure with a rectangular cross-section, the second snap-fit ​​part is a protrusion with a fan-shaped cross-section, and the first snap-fit ​​part and the second snap-fit ​​part corresponding to it snap-fit ​​together.

[0017] More preferably, a sealing groove is provided on the outer side of the second connector, and a sealing gasket is snapped into the sealing groove, the sealing gasket sealingly abutting against the inner wall of the bearing cylinder.

[0018] A method for assembling a socket-type flexible joint for rainwater and sewage pipes, characterized by comprising the following steps:

[0019] S1, excavate rainwater and sewage ditches, and lay a foundation layer on the bottom surface of the ditches. Limiting mechanisms are set on the foundation layer at the positions on both sides of the rainwater and sewage pipes and at the front and rear positions of the support cylinder along the direction of the ditches.

[0020] S2, fix the first rainwater and sewage pipe in the ditch, install the filling arc plate in the fixing groove of the first rainwater and sewage pipe, and use the limiting block in the first rainwater and sewage pipe to hold and fix the filling arc plate.

[0021] S3, the sealing gasket is fitted into the sealing groove of the second rainwater and sewage pipe, and the second rainwater and sewage pipe is hoisted into the ditch;

[0022] S4, insert the second connector of the second rainwater and sewage pipe into the support of the first rainwater and sewage pipe, and make the second connector of the second rainwater and sewage pipe seal against the first connector of the first rainwater and sewage pipe and the filling arc plate to form a continuous and sealed pipe inner wall.

[0023] S5, repeat S2-S4 to complete the laying of all rainwater and sewage pipes.

[0024] Based on the above technical solution, preferably, in step S4, during the process of inserting the second connector of the second rainwater and sewage pipe into the support cylinder of the first rainwater and sewage pipe, the second rainwater and sewage pipe is rotated back and forth, and the angle of each rotation is no more than 15 degrees.

[0025] The socket-type flexible joint for rainwater and sewage pipes and its assembly method of the present invention have the following advantages over the prior art:

[0026] (1) By opening a deformation groove on the second joint and setting a filling arc plate in the deformation groove, the second joint is connected to the first joint and the filling arc plate in a segmented manner, avoiding the interface from cracking during the snapping process of the first snap-fit ​​part and the second snap-fit ​​part, thereby ensuring the overall sealing of the pipeline.

[0027] (2) By opening the fixing groove above the end of the second joint, the number of joints at the bottom of the pipe can be reduced, thereby enhancing the overall sealing of the pipe.

[0028] (3) By setting a fixing groove and a limiting block, the filling arc plate can be pre-fixed, so that the second connector can be easily connected with the filling arc plate and the first connector, thereby improving the connection convenience of this interface. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a cross-sectional view of a socket-type flexible interface for rainwater and sewage pipes according to the present invention.

[0031] Figure 2 An exploded view of a socket-type flexible interface for rainwater and sewage pipes according to the present invention;

[0032] Figure 3 This is a perspective view of the first joint in a socket-type flexible interface for rainwater and sewage pipes according to the present invention.

[0033] Figure 4 This is a cross-sectional view of the first joint in a socket-type flexible interface for rainwater and sewage pipes according to the present invention.

[0034] Figure 5 This is a perspective view of the inner limiting block of a socket-type flexible interface for rainwater and sewage pipes according to the present invention;

[0035] Figure 6 This is a perspective view of the second connector in a socket-type flexible interface for rainwater and sewage pipes according to the present invention.

[0036] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0037] Figure 8 This is a perspective view of the first joint, the second joint, and the filling arc plate in the assembly state of a socket-type flexible interface for rainwater and sewage pipes according to the present invention.

[0038] Figure 9 for Figure 1 Enlarged view of point B in the middle;

[0039] Figure 10 for Figure 1 Enlarged view of point A in the middle;

[0040] Figure 11 for Figure 1 Exploded view of point A in the middle.

[0041] Wherein: 1. First connector; 11. Receiver; 111. Limiting block; 101. First snap-fit ​​part; 102. Fixing groove; 2. Second connector; 21. Sealing gasket; 201. Deformation groove; 2011. First arc groove; 2012. Second arc groove; 202. Second snap-fit ​​part; 203. Receiving groove; 204. Sealing groove; 3. Filling arc plate. Detailed Implementation

[0042] The technical solutions of this invention will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0043] like Figure 1-11 As shown, a socket-type flexible interface for rainwater and sewage pipes according to the present invention includes a first connector 1, a second connector 2, and a filling arc plate 3.

[0044] The first connector 1 is the socket end of the rainwater and sewage pipe, and a sleeve 11 is fixedly installed on the outside of the first connector 1.

[0045] The second connector 2 is the insertion end of the rainwater and sewage pipe. The end of the second connector 2 is located inside the support sleeve 11 and is sealed to it.

[0046] The filling arc plate 3 fills the gap between the end faces of the first joint 1 and the second joint 2. A deformation groove 201 is provided at the end of the second joint 2, and the filling arc plate 3 is disposed within the deformation groove 201. A first locking part 101 is provided at one end of the filling arc plate 3 and the end of the first joint 1, and a second locking part 202 is provided at the other end of the filling arc plate 3 and the end of the second joint 2. Figure 1 As shown, the first connector 1, the second connector 2, and the filling arc plate 3 are connected by a snap-fit ​​seal between the first snap-fit ​​part 101 and the second snap-fit ​​part 202, forming a continuous and sealed inner wall of the pipe. To improve the sealing performance of the pipe joint, a corresponding snap-fit ​​structure is usually provided. This snap-fit ​​structure increases the outer diameter of one of the pipe ends, which can cause one of the pipes to crack before the two snap-fit ​​structures are engaged. Figure 2 As shown, by opening a deformation groove 201 on the second connector 2, the end face of the second connector 2 is made non-planar, allowing the end face of the second connector 2 to be connected in segments with the filling arc plate 3 and the first connector 1. That is, when the first snap-fit ​​part 101 and the second snap-fit ​​part 202 are snapped together, each arc segment can expand and contract along its length direction, thereby reducing the pressure on the side of the interface and preventing cracking at the interface position, thus ensuring the sealing of the interface.

[0047] like Figure 1 As shown, the setting of the filling arc plate 3 increases the number of joints inside the pipe. It is preferable to position the deformation groove 201 above the end of the second joint 2 so that the added joint is located at the top of the pipe rather than at the bottom, thereby reducing the possibility of sewage leakage and improving the sealing effect of this structure.

[0048] To reduce damage caused by interface deformation, the deformation groove 201 is preferably configured to include a first arc groove 2011 and a second arc groove 2012. Both the first arc groove 2011 and the second arc groove 2012 are formed at the end of the second connector 2 and are continuously arranged. Figure 6 As shown, the first arc groove 2011 and the second arc groove 2012 divide the end face of the second connector 2 located in the deformation groove 201 into multiple stages, which can minimize the expansion and contraction deformation caused by the first snap-fit ​​part 101 and the second snap-fit ​​part 202 during the snap-fit ​​process.

[0049] To facilitate alignment of the first connector 1, the second connector 2, and the filling arc plate 3, it is preferable that the depth of the first arc groove 2011 is greater than the depth of the second arc groove 2012, such that the side of the first arc groove 2011 away from the second arc groove 2012 intersects the centerline of the second connector 2 but is not perpendicular, and the side of the second arc groove 2012 away from the first arc groove 2011 is parallel to the centerline of the second connector 2. Figure 6 As shown, one side of the first arc groove 2011 is inclined, while the other positions of the deformation groove 201 are parallel. Correspondingly, one end of the filling arc plate 3 is also inclined. By rotating the second connector 2, the second connector 2 can be slowly fitted with the filling arc plate 3.

[0050] When assembling this interface, the filling arc plate 3 needs to be pre-fixed on the first connector 1. To facilitate pre-fixation, it is preferable to open a fixing groove 102 at the end of the first connector 1 and set a first snap-fit ​​part 101 in the fixing groove 102 so that the filling arc plate 3 and the fixing groove 102 are also connected by snap-fit ​​sealing through the first snap-fit ​​part 101 and the second snap-fit ​​part 202. Similarly, a limiting block 111 can also be fixedly set in the support sleeve 11 so that the limiting block 111 abuts against the end of the filling arc plate 3 near the second connector 2. A receiving groove 203 is opened at the end of the second connector 2 so that the receiving groove 203 snaps with the limiting block 111, thereby realizing the pre-fixation of the filling arc plate 3 and ensuring the sealing of the inner wall of the pipe.

[0051] For the snap-fit ​​structure in the first joint 1, the second joint 2, and the filling arc plate 3, such as Figure 11 As shown, preferably, the end faces of the first connector 1, the second connector 2, and the filling arc plate 3 are all set to be inclined, the first snap-fit ​​part 101 is set to be a groove structure with a rectangular cross-section, and the second snap-fit ​​part 202 is set to be a protrusion with a fan-shaped cross-section, so that the first snap-fit ​​part 101 and the corresponding second snap-fit ​​part 202 snap-fit ​​together, and the arc surface of the fan-shaped protrusion can slide against the first connector 1, the second connector 2, or the filling arc plate 3, thereby snapping into the groove.

[0052] For the seal between the second joint 2 and the bearing sleeve 11, such as Figure 9 As shown, a sealing groove 204 is preferably opened on the outer side of the support cylinder 11, and a sealing gasket 21 is snapped into the sealing groove 204 so that the sealing gasket 21 seals against the inner wall of the support cylinder 11.

[0053] The present invention provides a method for assembling a socket-type flexible joint for rainwater and sewage pipes, comprising the following steps:

[0054] S1. Excavate rainwater and sewage ditches and lay a foundation layer on the bottom of the ditches. Set limiting mechanisms on the foundation layer at the positions on both sides of the rainwater and sewage pipes and at the front and rear positions of the support cylinder 11 along the direction of the ditch to prevent the pipes from shaking in the ditch in its radial or axial direction.

[0055] S2, fix the first rainwater and sewage pipe in the ditch, install the filling arc plate 3 in the fixing groove 102 of the first rainwater and sewage pipe, and use the limiting block 111 in the first rainwater and sewage pipe to hold and fix the filling arc plate 3.

[0056] S3, the sealing gasket 21 is fitted into the sealing groove 204 of the second rainwater and sewage pipe, and the second rainwater and sewage pipe is hoisted into the ditch;

[0057] S4, insert the second connector 2 of the second rainwater and sewage pipe into the support sleeve 11 of the first rainwater and sewage pipe, and seal and hold the second connector 2 of the second rainwater and sewage pipe with the first connector 1 and the filling arc plate 3 of the first rainwater and sewage pipe to form a continuous and sealed inner wall of the pipe. During this process, the filling arc plate 3 is pre-fixed on the first connector 1, but the two can be not snapped together. By using the compression of the second connector 2, the second connector 2 is snapped together with the first connector 1 and the filling arc plate 3 respectively, and the filling arc plate 3 is snapped together with the first connector 1.

[0058] During the process of inserting the second connector 2 of the second rainwater and sewage pipe into the sleeve 11 of the first rainwater and sewage pipe, the second rainwater and sewage pipe is rotated back and forth, with each rotation angle not exceeding 15 degrees, to avoid damage caused by excessive rotation of the pipe.

[0059] S5, repeat S2-S4 to complete the laying of all rainwater and sewage pipes.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A socket-type flexible joint for rainwater and sewage pipes, characterized in that: It includes a first joint (1), a second joint (2), and a filling arc plate (3), wherein, A support sleeve (11) is fixedly provided on the outer side of the first connector (1); The end of the second connector (2) is located inside the support cylinder (11) and is sealed to it. The end of the second connector (2) is provided with a deformation groove (201). The filling arc plate (3) is disposed in the deformation groove (201). One end of the filling arc plate (3) and the end of the first connector (1) are provided with a first snap-fit ​​part (101). The other end of the filling arc plate (3) and the end of the second connector (2) are provided with a second snap-fit ​​part (202). The first connector (1), the second connector (2) and the filling arc plate (3) are connected by the snap-fit ​​sealing of the first snap-fit ​​part (101) and the second snap-fit ​​part (202) and form a continuous and sealed inner wall of the pipe. The deformation groove (201) is located above the end of the second joint (2); The deformation groove (201) includes a first arc groove (2011) and a second arc groove (2012). The first arc groove (2011) and the second arc groove (2012) are both opened at the end of the second joint (2) and are continuously arranged. The opening depth of the first arc groove (2011) is greater than the opening depth of the second arc groove (2012). The side of the first arc groove (2011) away from the second arc groove (2012) intersects with the center line of the second connector (2) but is not perpendicular. The side of the second arc groove (2012) away from the first arc groove (2011) is parallel to the center line of the second connector (2). The first connector (1) has a fixing groove (102) at its end, and the first snap-fit ​​part (101) is provided in the fixing groove (102). The filling arc plate (3) and the fixing groove (102) are sealed and connected by the snap-fit ​​of the first snap-fit ​​part (101) and the second snap-fit ​​part (202). A limiting block (111) is fixedly installed inside the support cylinder (11), and the limiting block (111) abuts against the end of the filling arc plate (3) near the second joint (2); a receiving groove (203) is opened at the end of the second joint (2), and the receiving groove (203) is engaged with the limiting block (111); The end faces of the first connector (1), the second connector (2) and the filling arc plate (3) are all inclined. The first snap-fit ​​part (101) is a groove structure with a rectangular cross-section, and the second snap-fit ​​part (202) is a protrusion with a fan-shaped cross-section. The first snap-fit ​​part (101) and the second snap-fit ​​part (202) corresponding to it snap-fit ​​together.

2. The socket-type flexible joint for rainwater and sewage pipes as described in claim 1, characterized in that: The second connector (2) has a sealing groove (204) on its outer side, and a sealing gasket (21) is snapped into the sealing groove (204). The sealing gasket (21) seals against the inner wall of the support cylinder (11).

3. A method for assembling a socket-type flexible joint for rainwater and sewage pipes as described in claim 2, characterized in that, Includes the following steps: S1, excavate rainwater and sewage ditches, and lay a foundation layer on the bottom surface of the ditches. On the foundation layer, limit mechanisms are set at the positions on both sides of the rainwater and sewage pipes and at the front and rear positions of the support cylinder (11) along the direction of the ditch. S2, fix the first rainwater and sewage pipe in the ditch, install the filling arc plate (3) in the fixing groove (102) of the first rainwater and sewage pipe, and use the limiting block (111) in the first rainwater and sewage pipe to hold and fix the filling arc plate (3); S3, the sealing gasket (21) is fitted into the sealing groove (204) of the second rainwater and sewage pipe, and the second rainwater and sewage pipe is hoisted into the ditch; S4, insert the second connector (2) of the second rainwater and sewage pipe into the support sleeve (11) of the first rainwater and sewage pipe, and make the second connector (2) of the second rainwater and sewage pipe seal against the first connector (1) of the first rainwater and sewage pipe and the filling arc plate (3) to form a continuous and sealed pipe inner wall. S5, repeat S2-S4 to complete the laying of all rainwater and sewage pipes.

4. The assembly method of a socket-type flexible joint for rainwater and sewage pipes as described in claim 3, characterized in that: In step S4, during the process of inserting the second connector (2) of the second rainwater and sewage pipe into the support cylinder (11) of the first rainwater and sewage pipe, the second rainwater and sewage pipe is rotated back and forth, and the angle of each rotation is no more than 15 degrees.

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