Socket and spigot joint type pipeline and pipeline sealing structure used in water conservancy project

Abstract

The utility model discloses a socket type pipeline and a pipeline sealing structure used in a water conservancy project, belongs to the technical field of water conservancy project pipelines, and aims to solve the problems that the uniformity of a sealing mode adopted during pipeline arrangement of an existing socket type pipeline is poor, and the sealing mode is not uniform along with the increase of the service life. In order to solve the problems that due to potential unstable factors, part of a sealing structure in the whole pipeline is relatively weak, and leakage points are prone to occurring, the socket and spigot type pipeline comprises a main pipe body, a bearing sleeve and an inserting sleeve, the inserting sleeve is arranged at one end of the main pipe body, and the inserting sleeve and the main pipe body are integrally formed; one end of the main pipe body is provided with an insertion sleeve, the other end of the main pipe body is sleeved with the bearing sleeve, the bearing sleeve and the main pipe body are integrally formed, the bearing sleeve and the insertion sleeve are arranged in a matched mode, and when the socket-and-spigot type pipelines are arranged, the socket-and-spigot type pipeline located on the rear portion is inserted into the bearing sleeve of the socket-and-spigot type pipeline located on the front portion through the insertion sleeve of the socket-and-spigot type pipeline. Every two adjacent socket and spigot type pipelines are connected in a sealed mode through a sealing structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy engineering pipelines, and in particular relates to a spigot-and-socket type pipeline and a pipeline sealing structure used in water conservancy engineering. Background Art

[0002] Socket-and-spigot pipes are commonly used pipe structures in water conservancy projects. When laying out, the socket-and-spigot pipes only need to be plugged in and sealed through adjacent pipes. Compared with the traditional pipe structure that requires the arrangement of installation rings and multiple sealings at the same time when the pipes are connected, it is easy to install and has been widely used in the industry. The sealing structure of the socket-and-spigot pipe usually uses waterproof sealing cloth, which is used to wrap the plug-in end of the socket-and-spigot pipe, and the wrapped pipe plug-in end is inserted into the socket end of the socket-and-spigot pipe in front. The sleeve formed by the waterproof sealing cloth is used to fill the installation gap between the two adjacent socket-and-spigot pipes, thereby achieving the socket-and-spigot pipe connection. The invention discloses a kind of sealing structure, and it can achieve the effect of sealing and tight connection, but the winding sealing structure needs manual operation, and the uniformity of the sealing structure on each pipe cannot be guaranteed during manual winding, and the friction between the socket sleeve and the sealing sleeve in the front and rear socket-type pipes during insertion will also cause the wound sealing cloth to be squeezed and stacked, which will easily affect the sealing stability of the whole pipeline. With the increase of service life, these potential unstable factors will cause some sealing structures in the whole pipeline to be relatively weak and prone to leakage. Therefore, based on the shortcomings of the existing socket-type pipes, it is in line with practical needs to develop a socket-type pipe and pipe sealing structure for use in water conservancy projects. Utility Model Content

[0003] The utility model aims to solve the problem that the sealing method used in the existing spigot-and-socket pipes is poorly uniform when laying the pipes. With the increase of service life, these potential unstable factors will cause the partial sealing structure of the pipe as a whole to be relatively weak, and leakage points are prone to occur. Thus, a spigot-and-socket pipe and a pipe sealing structure for use in water conservancy projects are provided.

[0004] A spigot-and-socket pipe for use in a water conservancy project, the spigot-and-socket pipe comprising a main pipe body, a socket sleeve and a plug sleeve, the plug sleeve being arranged on one end of the main pipe body, and the plug sleeve and the main pipe body are integrally formed, the socket sleeve is arranged on the other end of the main pipe body, and the socket sleeve and the main pipe body are integrally formed;

[0005] The receiving sleeve is processed with a receiving cavity on the end surface of one end away from the main body, and the receiving sleeve is processed with a main body plug-in cavity on the end surface of the receiving sleeve close to the main body. The receiving sleeve is sleeved on the other end of the main body through the main body plug-in cavity. A transition cavity is provided between the main body plug-in cavity and the receiving cavity. The main body plug-in cavity is connected with the receiving cavity through the transition cavity, and the axes of the receiving cavity, the transition cavity and the main body plug-in cavity are arranged in a colinear manner.

[0006] The plug-in sleeve comprises a limiting ring and a plug-in ring, wherein the limiting ring is arranged on one end of the main pipe body, and the limiting ring and the main pipe body are formed in one piece, and the plug-in ring is arranged on the end of the limiting ring away from the main pipe body, and the axis of the plug-in ring is arranged in a colinear line with the axis of the limiting ring, and the plug-in ring and the limiting ring are formed in one piece;

[0007] The socket sleeve and the plug sleeve are arranged in cooperation. When the socket-and-spigot pipe is laid, the socket-and-spigot pipe located at the rear is inserted into the socket sleeve of the socket-and-spigot pipe located at the front through its plug sleeve, and the two adjacent socket-and-spigot pipes are sealed and connected through the sealing structure;

[0008] Furthermore, a No. 1 sealing ring placement groove and a No. 2 sealing ring placement groove are processed in sequence on the inner ring wall of the receiving cavity along the pipe insertion direction, and the structure of the No. 1 sealing ring placement groove is the same as that of the No. 2 sealing ring placement groove;

[0009] A No. 3 sealing ring placement groove is processed on the inner ring wall of the transition chamber;

[0010] A sealing gasket placement area is provided in the main body plug-in cavity on one side close to the transition cavity;

[0011] Furthermore, the outer diameter of the end face of the limiting ring in the plug-in sleeve is larger than the outer diameter of the end face of the plug-in ring;

[0012] The outer ring wall of the plug-in ring is processed with a fourth sealing ring placement groove, a fifth sealing ring placement groove and a sixth sealing ring placement groove in sequence along the pipeline insertion direction;

[0013] Further, the transition cavity is a tapered cavity structure, the large end of the transition cavity is connected to the receiving cavity, and the end face diameter of the large end of the transition cavity is the same as the end face diameter of the receiving cavity, the small end of the transition cavity is connected to the main body plug-in cavity, and the end face diameter of the small end of the transition cavity is the same as the end face diameter of the main body plug-in cavity, the plug-in ring is a tapered ring body structure, the large end of the plug-in ring is integrally formed with one end of the limiting ring, and the end face size of the large end of the plug-in ring is smaller than the end face size of the limiting ring, the taper of the transition cavity is the same as the taper of the plug-in ring, and the transition cavity is matched with the plug-in ring;

[0014] Furthermore, when the spigot-and-socket pipe is laid, locking is achieved through a locking structure;

[0015] Further, the locking structure includes N locking blocks and N locking rubber gaskets, N is a positive integer, and N locking limit grooves are equidistantly processed along the circumferential direction on the inner ring wall of the receiving cavity away from one end of the main pipe, each locking block is correspondingly inserted in a locking limit groove, and each locking block is interference fit with the locking limit groove, one end of each locking block extends into the receiving cavity, and the other end of each locking block is located behind the limit ring in the socket-type pipe inserted later, N locking rubber gaskets are circumferentially arranged between the N locking blocks and the limit ring, and each locking rubber gasket is bonded and fixed to the limit ring, and the joint of two adjacent locking rubber gaskets is arranged corresponding to a locking block, and the socket-type pipe located in the front locks and limits the socket-type pipe located in the rear through the N locking blocks;

[0016] Furthermore, the N is 3:

[0017] Furthermore, the locking rubber gasket is an arc-shaped rubber gasket, the inner arc surface of the locking rubber gasket is in close contact with the outer annular wall of the main pipe body in the rear bell-and-spigot pipe, and the outer arc surface of the locking rubber gasket is in close contact with the inner cavity wall of the receiving cavity in the rear bell-and-spigot pipe;

[0018] A sealing structure for a spigot-and-socket pipe in a water conservancy project, the sealing structure comprising a sealing sleeve, a sealing gasket, a No. 1 sealing ring, a No. 2 sealing ring, a No. 3 sealing ring, a No. 4 sealing ring and a No. 5 sealing ring, wherein the sealing gasket is arranged in a sealing gasket placement area located in a front spigot-and-socket pipe, and one end of the sealing gasket is in close contact with a main pipe body located in the front spigot-and-socket pipe, and the other end of the sealing gasket is in close contact with a spigot-and-socket sleeve located in a rear spigot-and-socket pipe;

[0019] The No. 1 sealing ring is arranged in a cavity formed by the No. 3 sealing ring placement groove in the front bell-and-spigot pipe and the No. 6 sealing ring placement groove in the rear bell-and-spigot pipe, and the transition cavity in the front bell-and-spigot pipe is sealed by the No. 1 sealing ring and the spigot ring in the rear bell-and-spigot pipe;

[0020] The sealing sleeve is arranged between the socket sleeve in the front socket-type pipe and the plug-in sleeve in the rear socket-type pipe, and the sealing sleeve is axially limited by a limiting ring in the rear socket-type pipe, the outer ring wall of the sealing sleeve is sealed with the socket sleeve in the front socket-type pipe through a No. 3 sealing ring and a No. 4 sealing ring, and the inner ring wall of the sealing sleeve is sealed with the plug-in sleeve in the rear socket-type pipe through a No. 2 sealing ring and a No. 5 sealing ring;

[0021] Furthermore, the inner ring wall of the sealing sleeve is a conical wall, and the taper of the inner ring wall of the sealing sleeve is the same as the taper of the outer ring wall of the plug-in ring. The outer ring wall of the sealing sleeve is processed with a No. 10 sealing ring placement groove and a No. 9 sealing ring placement groove in sequence along the pipeline insertion direction, and the inner ring wall of the sealing sleeve is processed with a No. 7 sealing ring placement groove and a No. 8 sealing ring placement groove in sequence along the pipeline insertion direction. The No. 2 sealing ring is arranged in the No. 8 sealing ring placement groove in the front socket-type pipeline and the No. 5 sealing ring placement groove in the rear socket-type pipeline. The No. 5 sealing ring is arranged in a cavity composed of the No. 7 sealing ring placement groove in the front bell-and-spigot pipe and the No. 4 sealing ring placement groove in the rear bell-and-spigot pipe, the No. 3 sealing ring is arranged in a cavity composed of the No. 9 sealing ring placement groove in the front bell-and-spigot pipe and the No. 2 sealing ring placement groove in the rear bell-and-spigot pipe, and the No. 4 sealing ring is arranged in a cavity composed of the No. 10 sealing ring placement groove in the front bell-and-spigot pipe and the No. 1 sealing ring placement groove in the rear bell-and-spigot pipe;

[0022] The beneficial effects of this application compared to the prior art are as follows:

[0023] The present invention provides a spigot-and-socket pipe and pipe sealing structure for use in water conservancy projects. Considering that the sealing structure between the pipes of the existing spigot-and-socket pipes needs to be manually wound when they are laid, resulting in the defect that the uniformity of the sealing structure at various locations of the pipes is poor, the present invention optimizes the existing sealing structure, optimizes the original sealing structure that needs to be manually wound into a fixed rubber waterproof sealing sleeve, and realizes sealing with the front and rear two spigot-and-socket pipes by cooperating with the rubber waterproof sealing sleeve and a plurality of rubber gaskets. This sealing structure is firstly a multi-layer seal. The rubber waterproof sealing sleeve, as a sealing medium, can be uniformly prepared to ensure the uniformity of the sealing structure, so that the structure of each sealing point in the pipe is the same, and the stability of the overall sealing structure of the pipe is also ensured. Secondly, this sealing sleeve can completely fill the sealing gap between the two adjacent spigot-and-socket pipes during the insertion process, and while achieving sealing, it also plays a role in increasing the friction of the connection. The locking structure during the connection can tightly fix the two spigot-and-socket pipes with the effect of its own resilience and friction, and also ensures the stability and reliability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main view of the socket-and-spigot pipe described in this application;

[0025] Figure 2 This is a main cross-sectional schematic diagram of the socket-and-spigot pipe described in this application;

[0026] Figure 3 This is a main cross-sectional schematic diagram of a socket sleeve in the socket-and-spigot type pipe described in this application;

[0027] Figure 4It is a schematic diagram of the main view of the spigot sleeve in the spigot-and-bell type pipe described in the present application;

[0028] Figure 5 This is a schematic diagram of the socket-and-spigot pipe described in this application in the AA direction;

[0029] Figure 6 This is a schematic front view of the sealing sleeve described in this application;

[0030] Figure 7 It is a right side schematic diagram of the sealing sleeve described in this application;

[0031] Figure 8 This is a main cross-sectional schematic diagram of the sealing sleeve described in this application;

[0032] Fig. 9 This is a schematic diagram of the connection of two socket-type pipes described in this application;

[0033] Fig.10 for Fig. 9 A partial enlarged view of

[0034] Fig.11 This is a schematic diagram of the structure of the locking rubber gasket described in this application;

[0035] In the figure, 1 is a main body, 2 is a socket, 21 is a socket cavity, 22 is a locking limit groove, 23 is a No. 1 sealing ring placement groove, 24 is a No. 2 sealing ring placement groove, 25 is a transition cavity, 26 is a No. 3 sealing ring placement groove, 27 is a sealing gasket placement area, 28 is a main body plug-in cavity, 3 is a plug-in sleeve, 31 is a limit ring, 32 is a plug-in ring, 33 is a No. 4 sealing ring placement groove, 34 is a No. 5 sealing ring placement groove, 35 is a No. 6 sealing ring placement groove, 4 is a sealing sleeve, 41 is a No. 7 sealing ring placement groove, 42 is a No. 8 sealing ring placement groove, 43 is a No. 9 sealing ring placement groove, 44 is a No. 10 sealing ring placement groove, 5 is a sealing gasket, 6 is a No. 1 sealing ring, 7 is a No. 2 sealing ring, 8 is a No. 3 sealing ring, 9 is a No. 4 sealing ring, 10 is a No. 5 sealing ring, 11 is a locking block and 12 is a locking rubber gasket. DETAILED DESCRIPTION

[0036] Specific implementation method 1: Combination Figures 1 to 11 This embodiment is described. In this embodiment, a spigot-and-socket pipe for use in a water conservancy project is provided. The spigot-and-socket pipe comprises a main body 1, a socket sleeve 2 and a plug sleeve 3. The plug sleeve 3 is arranged on one end of the main body 1, and the plug sleeve 3 is integrally formed with the main body 1. The socket sleeve 2 is sleeved on the other end of the main body 1, and the socket sleeve 2 is integrally formed with the main body 1.

[0037] The receiving sleeve 2 is processed with a receiving cavity 21 on the end surface of the end away from the main body 1, and the receiving sleeve 2 is processed with a main body plug-in cavity 28 on the end surface of the end close to the main body 1. The receiving sleeve 2 is sleeved on the other end of the main body 1 through the main body plug-in cavity 28. A transition cavity 25 is provided between the main body plug-in cavity 28 and the receiving cavity 21. The main body plug-in cavity 28 is connected with the receiving cavity 21 through the transition cavity 25, and the axes of the receiving cavity 21, the transition cavity 25 and the main body plug-in cavity 28 are arranged in a collinear manner.

[0038] The plug-in sleeve 3 includes a limit ring 31 and a plug-in ring 32. The limit ring 31 is arranged on one end of the main pipe body 1, and the limit ring 31 and the main pipe body 1 are formed in one piece. The plug-in ring 32 is arranged on the end of the limit ring 31 away from the main pipe body 1, and the axis of the plug-in ring 32 is arranged in a colinear manner with the axis of the limit ring 31, and the plug-in ring 32 and the limit ring 31 are formed in one piece.

[0039] The socket sleeve 2 is arranged in cooperation with the plug-in sleeve 3. When the socket-and-spigot pipe is laid, the socket-and-spigot pipe at the rear is inserted into the socket sleeve 2 of the socket-and-spigot pipe at the front through its plug-in sleeve 3, and the two adjacent socket-and-spigot pipes are sealed and connected through a sealing structure.

[0040] Specific implementation method 2: Combination Figures 1 to 11 This embodiment is described. The difference between this embodiment and the first embodiment is that a first sealing ring placement groove 23 and a second sealing ring placement groove 24 are processed in sequence on the inner ring wall of the receiving cavity 21 along the pipe insertion direction, and the structure of the first sealing ring placement groove 23 is the same as that of the second sealing ring placement groove 24;

[0041] The inner ring wall of the transition chamber 25 is processed with a No. 3 sealing ring placement groove 26;

[0042] A sealing gasket placement area 27 is provided on one side of the main body inserting cavity 28 close to the transition cavity 25. Other components and connection methods are the same as those of the first embodiment.

[0043] Specific implementation method three: Combination Figures 1 to 11 This embodiment is described. The difference between this embodiment and the second embodiment is that the end face outer diameter of the limit ring 31 in the plug-in sleeve 3 is larger than the end face outer diameter of the plug-in ring 32, and the outer ring wall of the plug-in ring 32 is processed with a fourth sealing ring placement groove 33, a fifth sealing ring placement groove 34 and a sixth sealing ring placement groove 35 in sequence along the pipe insertion direction. Other components and connection methods are the same as those of the second embodiment.

[0044] Specific implementation method four: Combination Figures 1 to 11This embodiment is described. The difference between this embodiment and the third embodiment is that the transition chamber 25 is a conical chamber structure. The large end of the transition chamber 25 is connected to the receiving chamber 21, and the end face diameter of the large end of the transition chamber 25 is the same as the end face diameter of the receiving chamber 21. The small end of the transition chamber 25 is connected to the main body plug-in chamber 28, and the end face diameter of the small end of the transition chamber 25 is the same as the end face diameter of the main body plug-in chamber 28. The plug-in ring 32 is a conical ring structure. The large end of the plug-in ring 32 is integrally formed with one end of the limit ring 31, and the end face size of the large end of the plug-in ring 32 is smaller than the end face size of the limit ring 31. The taper of the transition chamber 25 is the same as the taper of the plug-in ring 32, and the transition chamber 25 is matched with the plug-in ring 32. Other components and connection methods are the same as those of the third embodiment.

[0045] In combination with the description of specific embodiments one to four, the present application adds multiple sealing ring placement grooves on the connection contact surface of the socket-type pipe. The purpose is to cooperate with the sealing structure to achieve multiple sealing effects. The sealing ring placement grooves are used to provide placement space for the sealing rings used in subsequent sealing.

[0046] Specific implementation method five: Combination Figures 1 to 11 This embodiment is described. The difference between this embodiment and the fourth embodiment is that the locking structure is used to achieve locking when the spigot-and-socket pipe is laid. The other components and connection methods are the same as those of the fourth embodiment.

[0047] Specific implementation method six: Combination Figures 1 to 11 The present embodiment is described. The present embodiment is different from the specific embodiment 5 in that the locking structure includes N locking blocks 11 and N locking rubber gaskets 12, N is a positive integer, and the inner ring wall of the receiving cavity 21 away from the end of the main pipeline 1 is equidistantly processed with N locking limit grooves 22 along the circumferential direction, each locking block 11 is correspondingly inserted in a locking limit groove 22, and each locking block 11 is interference fit with the locking limit groove 22, and one end of each locking block 11 extends to the receiving cavity 21. In the connecting cavity 21, the other end of each locking block 11 is located behind the limit ring 31 in the socket-type pipe inserted later, N locking rubber gaskets 12 are arranged circumferentially between the N locking blocks 11 and the limit ring 31, and each locking rubber gasket 12 is bonded and fixed to the limit ring 31, and the joint of two adjacent locking rubber gaskets 12 is correspondingly arranged with a locking block 11, and the socket-type pipe located in the front is locked and limited to the socket-type pipe located in the rear through the N locking blocks 11. Other components and connection methods are the same as those in the specific implementation mode five.

[0048] Specific implementation method seven: Combination Figures 1 to 11This embodiment is described. The difference between this embodiment and the sixth embodiment is that N is 3. The other components and connection methods are the same as those of the sixth embodiment.

[0049] Specific implementation method eight: Combination Figures 1 to 11 This embodiment is described. The difference between this embodiment and the seventh embodiment is that the locking rubber gasket 12 is an arc-shaped rubber gasket, the inner arc surface of the locking rubber gasket 12 is in close contact with the outer ring wall of the main pipe body 1 in the rear socket-type pipe, and the outer arc surface of the locking rubber gasket 12 is in close contact with the inner cavity wall of the receiving cavity 21 in the rear socket-type pipe. Other components and connection methods are the same as those of the seventh embodiment.

[0050] In combination with the description of specific implementation methods five to eight, the inserted socket-type pipe is limited by a locking structure to prevent excessive water flow impact during use. The socket-type pipe located at the rear will be separated from the socket-type pipe located in the front due to the impact of the water flow, resulting in a gap and causing leakage.

[0051] Specific implementation method nine: Combination Figures 1 to 11 This embodiment is described. The difference between this embodiment and the specific embodiment 8 is that the sealing structure includes a sealing sleeve 4, a sealing gasket 5, a first sealing ring 6, a second sealing ring 7, a third sealing ring 8, a fourth sealing ring 9 and a fifth sealing ring 10. The sealing gasket 5 is arranged in a sealing gasket placement area 27 located in the front bell-and-spigot pipe, and one end of the sealing gasket 5 is in close contact with the main pipe body 1 located in the front bell-and-spigot pipe, and the other end of the sealing gasket 5 is in close contact with the plug sleeve 3 located in the rear bell-and-spigot pipe;

[0052] The No. 1 sealing ring 6 is arranged in a cavity formed by the No. 3 sealing ring placement groove 26 in the front socket-type pipe and the No. 6 sealing ring placement groove 35 in the rear socket-type pipe, and the transition cavity 25 in the front socket-type pipe is sealed by the No. 1 sealing ring 6 and the plug-in ring 32 in the rear socket-type pipe;

[0053] The sealing sleeve 4 is arranged between the socket sleeve 2 in the front socket-type pipe and the plug-in sleeve 3 in the rear socket-type pipe, and the sealing sleeve 4 is axially limited by the limiting ring 31 in the rear socket-type pipe, the outer ring wall of the sealing sleeve 4 is sealed with the socket sleeve 2 in the front socket-type pipe through the No. 3 sealing ring 8 and the No. 4 sealing ring 9, and the inner ring wall of the sealing sleeve 4 is sealed with the plug-in sleeve 3 in the rear socket-type pipe through the No. 2 sealing ring 7 and the No. 5 sealing ring 10. Other components and connection methods are the same as those in the eighth embodiment.

[0054] Specific implementation method ten: Combination Figures 1 to 11The present embodiment is described. The present embodiment is different from the ninth embodiment in that the inner ring wall of the sealing sleeve 4 is a conical wall, and the taper of the inner ring wall of the sealing sleeve 4 is the same as the taper of the outer ring wall of the plug-in ring 32. The outer ring wall of the sealing sleeve 4 is processed with a No. 10 sealing ring placement groove 44 and a No. 9 sealing ring placement groove 43 in sequence along the pipe insertion direction. The inner ring wall of the sealing sleeve 4 is processed with a No. 7 sealing ring placement groove 41 and a No. 8 sealing ring placement groove 42 in sequence along the pipe insertion direction. The No. 2 sealing ring 7 is arranged in the socket-type pipe located in the front, and the No. 8 sealing ring placement groove 42 is arranged in the socket-type pipe located in the rear. The No. 5 sealing ring 10 is arranged in a cavity composed of the No. 7 sealing ring placement groove 41 in the front bell-and-spigot pipe and the No. 4 sealing ring placement groove 33 in the rear bell-and-spigot pipe, the No. 3 sealing ring 8 is arranged in a cavity composed of the No. 9 sealing ring placement groove 43 in the front bell-and-spigot pipe and the No. 2 sealing ring placement groove 24 in the rear bell-and-spigot pipe, and the No. 4 sealing ring 9 is arranged in a cavity composed of the No. 10 sealing ring placement groove 44 in the front bell-and-spigot pipe and the No. 1 sealing ring placement groove 23 in the rear bell-and-spigot pipe. Other components and connection methods are the same as those in the ninth embodiment.

[0055] In combination with the description of specific embodiments nine and ten, the sealing sleeve structure of the present application draws on the structural form of the wedge block, and cooperates with the conical surface in the socket-type pipe to achieve a stable connection between the pipes. At the same time, a plurality of sealing ring placement grooves are also provided on the sealing sleeve itself, which are used to tightly connect with the two socket-type pipes connected to each other through the sealing ring to avoid water leakage.

[0056] The present invention has been disclosed as above with preferred implementation cases, but it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent implementation cases with equivalent changes by using the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0057] How it works

[0058] When the present application is used, firstly, the No. 1 sealing ring 6, the No. 2 sealing ring 7 and the No. 5 sealing ring 10 are sleeved on the outer circumferential surface of the plug-in ring 32 in the rear socket-type pipe, and the No. 3 sealing ring 8 and the No. 4 sealing ring 9 are embedded in the inner ring wall surface of the socket sleeve 2 in the front socket-type pipe, the sealing gasket ring 5 is arranged in the sealing gasket placement area 27 in the front socket-type pipe, and the sealing sleeve 4 is embedded in the socket sleeve 2 in the front socket-type pipe, and it is ensured that the sealing sleeve 4 is sealed with the socket sleeve 2 in the front socket-type pipe through the No. 3 sealing ring 8 and the No. 4 sealing ring 9. After the sealing sleeve 4 is installed, the socket-type pipe at the rear is plugged into the sealing sleeve 4, and it is ensured that The socket-type pipe at the rear is sealed with the socket-type pipe at the front through the No. 1 sealing ring 6, and the socket-type pipe at the rear is sealed with the sealing sleeve 4 through the No. 2 sealing ring 7 and the No. 5 sealing ring 10. At this time, the two adjacent socket-type pipes are installed. Finally, the locking rubber gasket 12 is attached to the rear end of the limiting ring 31 in the socket-type pipe at the rear, and the socket-type pipe at the rear and the socket-type pipe at the front are locked by the locking block 11. The locking rubber gasket 12 is used to fill the gap between the locking block 11 and the limiting ring 31. The locking block 11 is in close contact with the limiting ring 31 through the tensioning effect of the locking rubber gasket 12, thereby realizing the stable connection of the socket-type pipes.

Claims

1. A spigot-and-socket pipe for use in a water conservancy project, the spigot-and-socket pipe comprising a main pipe body (1), a socket sleeve (2) and a plug sleeve (3), the plug sleeve (3) being arranged on one end of the main pipe body (1), and the plug sleeve (3) and the main pipe body (1) being integrally formed, the socket sleeve (2) being sleeved on the other end of the main pipe body (1), and the socket sleeve (2) and the main pipe body (1) being integrally formed, characterized in that: The receiving sleeve (2) is processed with a receiving cavity (21) on the end surface of one end away from the main body (1), and the receiving sleeve (2) is processed with a main body plug-in cavity (28) on the end surface of the receiving sleeve (2) close to the main body (1). The receiving sleeve (2) is sleeved on the other end of the main body (1) through the main body plug-in cavity (28). A transition cavity (25) is provided between the main body plug-in cavity (28) and the receiving cavity (21). The main body plug-in cavity (28) is connected to the receiving cavity (21) through the transition cavity (25), and the axes of the receiving cavity (21), the transition cavity (25) and the main body plug-in cavity (28) are arranged in a colinear manner. The plug-in sleeve (3) comprises a limiting ring (31) and a plug-in ring (32), wherein the limiting ring (31) is arranged on one end of the main pipe body (1), and the limiting ring (31) and the main pipe body (1) are integrally formed, and the plug-in ring (32) is arranged on one end of the limiting ring (31) away from the main pipe body (1), and the axis of the plug-in ring (32) is arranged colinearly with the axis of the limiting ring (31), and the plug-in ring (32) and the limiting ring (31) are integrally formed; The socket sleeve (2) and the plug sleeve (3) are arranged in cooperation, and when the socket-and-spigot pipe is laid, the socket-and-spigot pipe located at the rear is inserted into the socket sleeve (2) of the socket-and-spigot pipe located at the front through its plug sleeve (3), and two adjacent socket-and-spigot pipes are sealed and connected through a sealing structure.

2. The spigot-and-socket pipe for use in water conservancy projects according to claim 1, characterized in that: A first sealing ring placement groove (23) and a second sealing ring placement groove (24) are processed in sequence on the inner ring wall of the receiving cavity (21) along the pipe insertion direction, and the structure of the first sealing ring placement groove (23) is the same as that of the second sealing ring placement groove (24); A No. 3 sealing ring placement groove (26) is machined on the inner ring wall of the transition chamber (25); A sealing gasket placement area (27) is provided in the main body plug-in cavity (28) on a side close to the transition cavity (25).

3. The spigot-and-socket pipe for use in water conservancy projects according to claim 2, characterized in that: The outer diameter of the end face of the limiting ring (31) in the plug-in sleeve (3) is greater than the outer diameter of the end face of the plug-in ring (32); A fourth sealing ring placement groove (33), a fifth sealing ring placement groove (34) and a sixth sealing ring placement groove (35) are processed in sequence on the outer ring wall of the plug-in ring (32) along the pipeline insertion direction.

4. The spigot-and-socket pipe for use in water conservancy projects according to claim 3, characterized in that: The transition cavity (25) is a conical cavity structure. The large end of the transition cavity (25) is connected to the receiving cavity (21), and the end face diameter of the large end of the transition cavity (25) is the same as the end face diameter of the receiving cavity (21). The small end of the transition cavity (25) is connected to the main body plug-in cavity (28), and the end face diameter of the small end of the transition cavity (25) is the same as the end face diameter of the main body plug-in cavity (28). The plug-in ring (32) is a conical ring structure. The large end of the plug-in ring (32) is integrally formed with one end of the limit ring (31), and the end face size of the large end of the plug-in ring (32) is smaller than the end face size of the limit ring (31). The taper of the transition cavity (25) is the same as the taper of the plug-in ring (32), and the transition cavity (25) and the plug-in ring (32) are arranged in coordination.

5. A spigot-and-socket pipe for use in water conservancy projects according to claim 1, 2, 3 or 4, characterized in that: When the socket-and-spigot type pipe is laid, locking is also achieved through a locking structure.

6. The spigot-and-socket pipe used in water conservancy projects according to claim 5, characterized in that: The locking structure comprises N locking blocks (11) and N locking rubber gaskets (12), wherein N is a positive integer, and N locking limit grooves (22) are equidistantly processed along the circumferential direction on the inner ring wall of the receiving cavity (21) away from one end of the main body (1), and each locking block (11) is correspondingly inserted into a locking limit groove (22), and each locking block (11) is interference-fitted with the locking limit groove (22), and one end of each locking block (11) extends into the receiving cavity (21), and each locking block (11) is The other end of the (11) is located behind the limiting ring (31) in the socket-type pipe inserted later, and N locking rubber gaskets (12) are arranged between the N locking blocks (11) and the limiting ring (31) along the circumferential direction, and each locking rubber gasket (12) is bonded and fixed to the limiting ring (31), and the joint of two adjacent locking rubber gaskets (12) is arranged corresponding to a locking block (11), and the socket-type pipe located in the front locks and limits the socket-type pipe located in the rear through the N locking blocks (11).

7. The spigot-and-socket pipe for use in water conservancy projects according to claim 6, characterized in that: The N is 3.

8. The spigot-and-socket pipe for use in water conservancy projects according to claim 7, characterized in that: The locking rubber gasket (12) is an arc-shaped rubber gasket, the inner arc surface of the locking rubber gasket (12) is in close contact with the outer annular wall of the main pipe body (1) in the rear socket-type pipe, and the outer arc surface of the locking rubber gasket (12) is in close contact with the inner cavity wall of the receiving cavity (21) in the rear socket-type pipe.

9. A sealing structure for a spigot-and-socket pipe in a water conservancy project, characterized in that: The sealing structure comprises a sealing sleeve (4), a sealing gasket (5), a first sealing ring (6), a second sealing ring (7), a third sealing ring (8), a fourth sealing ring (9) and a fifth sealing ring (10), wherein the sealing gasket (5) is arranged in a sealing gasket placement area (27) located in the front socket-type pipe, and one end of the sealing gasket (5) is in close contact with the main pipe body (1) located in the front socket-type pipe, and the other end of the sealing gasket (5) is in close contact with the plug sleeve (3) located in the rear socket-type pipe; The No. 1 sealing ring (6) is arranged in a cavity formed by the No. 3 sealing ring placement groove (26) located in the front socket-type pipe and the No. 6 sealing ring placement groove (35) located in the rear socket-type pipe, and the transition cavity (25) located in the front socket-type pipe is sealed by the No. 1 sealing ring (6) and the plug-in ring (32) located in the rear socket-type pipe; The sealing sleeve (4) is arranged between a socket sleeve (2) located in the front socket-type pipe and a plug-in sleeve (3) located in the rear socket-type pipe, and the sealing sleeve (4) is axially limited by a limiting ring (31) located in the rear socket-type pipe. The outer ring wall of the sealing sleeve (4) is sealed with the socket sleeve (2) located in the front socket-type pipe through a No. 3 sealing ring (8) and a No. 4 sealing ring (9), and the inner ring wall of the sealing sleeve (4) is sealed with the plug-in sleeve (3) located in the rear socket-type pipe through a No. 2 sealing ring (7) and a No. 5 sealing ring (10).

10. A sealing structure for a spigot-and-socket type pipe in a water conservancy project according to claim 9, characterized in that: The inner ring wall of the sealing sleeve (4) is a conical wall, and the taper of the inner ring wall of the sealing sleeve (4) is the same as the taper of the outer ring wall of the plug-in ring (32). The outer ring wall of the sealing sleeve (4) is processed with a No. 10 sealing ring placement groove (44) and a No. 9 sealing ring placement groove (43) in sequence along the pipeline insertion direction. The inner ring wall of the sealing sleeve (4) is processed with a No. 7 sealing ring placement groove (41) and a No. 8 sealing ring placement groove (42) in sequence along the pipeline insertion direction. The No. 2 sealing ring (7) is arranged in the No. 8 sealing ring placement groove (42) located in the front socket-type pipeline and the No. 5 sealing ring placement groove (34) located in the rear socket-type pipeline. The fifth sealing ring (10) is arranged in a cavity formed by the seventh sealing ring placement groove (41) located in the front bell-and-spigot pipe and the fourth sealing ring placement groove (33) located in the rear bell-and-spigot pipe, the third sealing ring (8) is arranged in a cavity formed by the ninth sealing ring placement groove (43) located in the front bell-and-spigot pipe and the second sealing ring placement groove (24) located in the rear bell-and-spigot pipe, and the fourth sealing ring (9) is arranged in a cavity formed by the tenth sealing ring placement groove (44) located in the front bell-and-spigot pipe and the first sealing ring placement groove (23) located in the rear bell-and-spigot pipe.

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