Connecting device of nodular cast iron pipe jacking pipe

Abstract

The utility model discloses a connecting device of a nodular cast iron pipe jacking pipe, and relates to the technical field of drainage construction. The connecting device for the nodular cast iron pipe jacking pipe comprises a socket part, a connecting part, a connecting part and a connecting part, wherein the socket part is used for being connected with a socket of the nodular cast iron pipe jacking pipe; the inserting opening part is used for being connected with a bellmouth of a nodular cast iron pipe jacking pipe; the connecting pipe is used for connecting the socket part and the spigot part, and the socket part and the spigot part are in sliding connection with the connecting pipe; wherein movable areas are arranged in the socket part and the spigot part, and a baffle ring is arranged on the connecting pipe. According to the nodular cast iron pipe jacking pipe, the movable bellmouth part and the movable inserting opening part are arranged on the connecting pipe, so that the problem that a sealing rubber ring on the nodular cast iron pipe jacking pipe is inconvenient to replace is solved, and when the nodular cast iron pipe jacking pipe is jacked, the sealing rubber ring can be conveniently replaced through the gap between the bellmouth part and the inserting opening part. And an intermediate jacking station needs to be additionally arranged to carry out segmented jacking on the nodular cast iron pipe jacking pipe.

Description

Technical Field

[0001] This utility model relates to the field of drainage construction, and specifically relates to a connecting device for jacking ductile iron pipes. Background Art

[0002] Ductile iron pipes are a kind of cast iron pipes with excellent performance, featuring high strength and long service life. They are suitable for laying pipes at relatively shallow depths underground for the transportation of substances such as water, gas, and oil.

[0003] When splicing jacking ductile iron pipes, the socket of the jacking ductile iron pipe needs to be inserted into the socket of another jacking ductile iron pipe, so as to achieve the splicing of the jacking ductile iron pipes. However, this splicing method will cause a certain gap at the splicing location, resulting in the aging of the sealing rubber ring at the splicing location after the jacking ductile iron pipes have been used for a long time, thereby affecting the use of the jacking ductile iron pipes. Summary of the Utility Model

[0004] The present utility model provides a connecting device for jacking ductile iron pipes, which is provided with a movable socket part and spigot part on the connecting pipe to facilitate the replacement of the sealing rubber ring.

[0005] To achieve the above objectives, the present utility model is realized through the following technical solutions:

[0006] A connecting device for jacking ductile iron pipes, comprising:

[0007] A socket part, used for connecting with the socket of the jacking ductile iron pipe;

[0008] A spigot part, used for connecting with the socket of the jacking ductile iron pipe;

[0009] A connecting pipe, used for connecting the socket part and the spigot part, and the socket part and the spigot part are slidably connected to the connecting pipe; wherein there is an activity area inside the socket part and the spigot part, and a retaining ring is provided on the connecting pipe.

[0010] In a further embodiment, a limiting part divides the activity area into an installation area and a sliding area.

[0011] In a further embodiment, a sealing rubber ring is located in the installation area of the socket part; a spigot part is located in the installation area of the spigot part.

[0012] In a further embodiment, fixing rings are respectively located on the socket part and the spigot part, and a sealing ring is provided between the fixing rings and the socket part and the spigot part.

[0013] In a further embodiment, a sealing ring is located on the retaining ring and fits with the socket part and the spigot part.

[0014] In a further embodiment, the inner diameter of the limiting part is at least the same as the inner diameter of the connecting pipe, and the inner diameter of the connecting pipe is at least the same as the inner diameter of the jacked ductile iron pipe.

[0015] In a further embodiment, the number of retaining rings on the connecting pipe is two, which are respectively located at both ends of the connecting pipe.

[0016] In a further embodiment, the outer diameters of the socket part and the spigot part are the same as the outer diameter of the jacked ductile iron pipe.

[0017] In a further embodiment, there is a gap between the socket part and the spigot part, and the socket part and the spigot part are connected to the connecting pipe by bolts.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] 1. By providing a movable socket part and spigot part on the connecting pipe, the present utility model facilitates the replacement of the sealing rubber ring. When it is necessary to replace the sealing rubber ring at the socket part, the bolts are unscrewed to make the socket part in a movable state, and then the socket part is slid to leave a certain distance from the jacked ductile iron pipe it is connected to, and then the replacement operation of the sealing rubber ring can be carried out. The replacement method of the sealing rubber ring at the spigot part is the same as that at the socket part.

[0020] 2. When installing the jacked ductile iron pipe, a relay chamber needs to be added every certain length to perform sectional jacking on the previously installed jacked ductile iron pipe. By providing a gap between the socket part and the spigot part, when performing sectional jacking on the jacked ductile iron pipe, only all the bolts of either the socket part or the spigot part need to be unscrewed, and a small jack is installed at the socket part or the spigot part, then sectional jacking of the jacked ductile iron pipe can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the front view structural schematic diagram of the present utility model.

[0022] Figure 2 is Figure 1 the sectional view structural schematic diagram of.

[0023] Figure 3 is the structural schematic diagram of the socket part and the spigot part.

[0024] Figure 4 is Figure 3 the sectional view structural schematic diagram of.

[0025] Figure 5 is the structural schematic diagram of the connecting pipe.

[0026] Figure 6 is Figure 5 the sectional view structural schematic diagram of.

[0027] The reference numerals in the figure are: 1, connecting pipe; 101, retaining ring; 2, socket part; 3, spigot part; 301, spigot component; 4, movable area; 401, sliding area; 402, installation area; 5, limiting part; 6, sealing ring; 7, sealing gasket; 8, fixing ring; 9, sealing rubber ring. Specific embodiments

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0029] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0030] Referring to Figures 1-6 , a connecting device for a jacked ductile iron pipe, comprising:

[0031] A socket part 2, for connecting with the spigot of a jacked ductile iron pipe;

[0032] A spigot part 3, for connecting with the socket of a jacked ductile iron pipe;

[0033] A connecting pipe 1, for connecting the socket part 2 and the spigot part 3, and the socket part 2 and the spigot part 3 are slidably connected to the connecting pipe 1; wherein a movable area 4 is provided inside the socket part 2 and the spigot part 3, and a retaining ring 101 is provided on the connecting pipe 1.

[0034] By providing a movable socket part 2 and spigot part 3 on the connecting pipe 1 for connecting a jacked ductile iron pipe, but it is only applicable to jacked ductile iron pipes with a smaller diameter.

[0035] A limiting part 5 divides the movable area 4 into an installation area 402 and a sliding area 401.

[0036] The setting of the limiting part 5 can limit the installation length of the jacked ductile iron pipe on the socket part 2 and the spigot part 3.

[0037] A sealing rubber ring 9 is located inside the installation area 402 of the socket part 2; a spigot component 301 is located inside the installation area 402 of the spigot part 3.

[0038] When the spigot of the jacked ductile iron pipe enters the socket part 2, the sealing rubber ring 9 seals the connection therebetween, and the spigot component 301 is used to connect with the socket of the jacked ductile iron pipe.

[0039] Fixing rings 8 are respectively located on the socket part 2 and the spigot part 3, and a sealing ring 6 is provided between the fixing rings 8 and the socket part 2 and the spigot part 3.

[0040] The socket part 2 and the spigot part 3 can be prevented from detaching from the connecting pipe 1 through the fixing ring 8, and the sealing ring 6 is used for sealing between the fixing ring 8 and the socket part 2 and the spigot part 3.

[0041] The sealing ring 7 is located on the retaining ring 101 and fits with the socket part 2 and the spigot part 3.

[0042] Through the sealing ring 7, the connection between the connecting pipe 1 and the socket part 2 and the spigot part 3 can be sealed.

[0043] The inner diameter of the limiting part 5 is at least the same as the inner diameter of the connecting pipe 1, and the inner diameter of the connecting pipe 1 is at least the same as the inner diameter of the jacked ductile iron pipe.

[0044] Having the same inner diameter can avoid obstructing the substances flowing inside the jacked ductile iron pipe.

[0045] The number of the retaining rings 101 on the connecting pipe 1 is two, which are respectively located at both ends of the connecting pipe 1.

[0046] The setting of the retaining ring 101 can prevent the socket part 3 and the socket part 2 from detaching from the connecting pipe 1 when the fixing ring 8 is installed on the socket part 3 and the socket part 2.

[0047] The outer diameters of the socket part 2 and the spigot part 3 are at most the same as the outer diameter of the jacked ductile iron pipe.

[0048] Because the outer diameters are at most the same, when jacking the jacked ductile iron pipe, the resistance of jacking the jacked ductile iron pipe can be avoided from increasing.

[0049] There is a gap between the socket part 2 and the spigot part 3, and the socket part 2 and the spigot part 3 are connected to the connecting pipe 1 through bolts.

[0050] The setting of the gap can provide a moving space for the socket part 2 and the spigot part 3, and at the same time, can also provide an installation position and space for the added small jacks.

[0051] During use, if it is necessary to replace the sealing rubber ring 9 at the connection of the jacked ductile iron pipe, the bolts inside the fixing ring 8 on the socket part 2 can be unscrewed to make the socket part 2 in a movable state, then push the socket part 2 towards the spigot part 3, so that a distance can be vacated between the socket part 2 and the jacked ductile iron pipe, and then the sealing rubber ring 9 inside the socket part 2 can be replaced;

[0052] After the replacement is completed, push the socket part 2 back to its original position and fix it with bolts; when replacing the sealing rubber ring 9 at the spigot part 3, the operation is the same as that for replacing the sealing rubber ring 9 at the socket part 2, and only the sealing rubber ring 9 inside the socket of the jacked ductile iron pipe needs to be taken out and replaced.

[0053] When the jacking of ductile iron pipes needs to be carried out in sections, by screwing out the bolts on either the socket end 2 or the spigot end 3, one of the socket end 2 or the spigot end 3 is made movable, and then the required small jack is placed in the gap between the socket end 2 and the spigot end 3.

[0054] The utility model facilitates the replacement of the sealing rubber ring by providing a movable socket end and spigot end on the connecting pipe. When the sealing rubber ring at the socket end needs to be replaced, the bolts are screwed out to make the socket end movable, and then the socket end is slid to leave a certain distance from the jacked ductile iron pipe it is connected to. Subsequently, the replacement operation of the sealing rubber ring can be carried out. The replacement method of the sealing rubber ring at the spigot end is the same as that at the socket end.

[0055] When installing the jacked ductile iron pipes, when a certain length is installed, a relay chamber needs to be added to perform sectional jacking on the previously installed jacked ductile iron pipes in front. And this device sets a gap between the socket end and the spigot end. In this way, when performing sectional jacking on the jacked ductile iron pipes, only the bolts of either the socket end or the spigot end need to be completely screwed out, and a small jack is installed on the socket end or the spigot end to achieve the sectional jacking of the jacked ductile iron pipes.

[0056] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the present utility model in each embodiment.

Claims

1. A connection device for ductile iron pipe jacking, characterized in that: include: The socket part (2) is connected to the socket of the ductile iron pipe top pipe; The socket part (3) is connected to the socket of the ductile iron pipe top pipe; A connecting pipe (1) is used to connect a socket portion (2) and a spigot portion (3), and the socket portion (2) and the spigot portion (3) are slidably connected to the connecting pipe (1); The socket part (2) and the plug part (3) are provided with a movable area (4), and the connecting pipe (1) is provided with a retaining ring (101).

2. A ductile iron pipe jacking connection device according to claim 1, characterized in that: Also includes: The limiting portion (5) divides the active area (4) into a mounting area (402) and a sliding area (401).

3. A ductile iron pipe jacking connection device according to claim 2, characterized in that: Also includes: A sealing rubber ring (9) is located in the installation area (402) of the socket portion (2); The socket member (301) is located in the installation area (402) of the socket portion (3).

4. A ductile iron pipe jacking connection device according to claim 1, characterized in that: Also includes: The fixing ring (8) is respectively located on the socket part (2) and the plug part (3), and a sealing ring (6) is provided between the fixing ring (8) and the socket part (2) and the plug part (3).

5. A ductile iron pipe jacking connection device according to claim 1, characterized in that: Also includes: The sealing ring (7) is located on the retaining ring (101) and fits with the socket portion (2) and the socket portion (3).

6. A ductile iron pipe jacking connection device according to claim 2, characterized in that: The inner diameter of the limiting portion (5) is at least the same as the inner diameter of the connecting pipe (1), and the inner diameter of the connecting pipe (1) is at least the same as the inner diameter of the ductile iron pipe top pipe.

7. A ductile iron pipe jacking connection device according to claim 1, characterized in that: There are two retaining rings (101) on the connecting pipe (1), which are respectively located at two ends of the connecting pipe (1).

8. A ductile iron pipe jacking connection device according to claim 1, characterized in that: The outer diameters of the socket portion (2) and the spigot portion (3) are the same as the outer diameter of the ductile iron pipe top pipe.

9. A ductile iron pipe jacking connection device according to claim 1, characterized in that: There is a gap between the socket portion (2) and the plug portion (3), and the socket portion (2) and the plug portion (3) are connected to the connecting pipe (1) via bolts.

Images