CN207268342U - A kind of device for reinforcing the connection of ductile iron pipeline socket joint - Google Patents

Abstract

The utility model relates to the technical field of connection equipment for ductile iron pipes, and discloses a device for strengthening the socket connection of ductile iron pipes, which comprises at least two ductile iron pipes connected in sequence and a reinforcement assembly for reinforcing the connection between two adjacent ductile iron pipes , the reinforcement assembly includes a flange member, a P-clamp, and a rubber gasket matched with the P-clip, and the P-clip and the rubber gasket are sequentially sleeved from outside to inside and clamped on the outer peripheral wall of the ductile iron pipe near the tail end superior. The device for strengthening the socket connection of ductile iron pipes of the utility model is simple and easy to operate, can be quickly installed and constructed, and improves the installation efficiency when the ductile tubes are irradiated; and the device is firm and reliable, improving the laying quality of the joints of the ductile tubes, and has the advantages of saving It has the advantages of saving time and labor, saving manpower and mechanical costs.

Description

A device for strengthening the socket connection of ductile iron pipes

technical field

The utility model relates to the technical field of connection equipment for ductile iron pipes, in particular to a device for strengthening the socket connection of ductile iron pipes.

Background technique

At present, ductile iron pipes are widely used in various domestic municipal pipeline projects, electromechanical installation projects, and outdoor pipeline installation projects. In particular, since the ductile iron pipe is an ideal material for tap water pipes, it is widely used in tap water and the connection between small-diameter water supply pipes and pipes in many areas of our country.

The installation of the existing ductile iron pipeline is shown in Figure 1: it mainly adopts the form of concrete pier 13 and U-shaped clip 14 to reinforce the connection position. The specific construction is as follows: the construction site determines the size and strength gray scale of the concrete buttress 13 according to the soil quality of the trench, groundwater, and the slotted section. The buttress 13, at the same time, the radian of the foundation groove is determined according to the outer diameter of the pipeline to be laid. After all the concrete buttresses 13 are completed, lay C30 fine stones and fine sand, install the socket 15 of the ductile iron pipe 11a along the direction of water flow, and fix it with U-shaped clips 14. After the first ductile iron pipe 11a After the installation is completed, put the special sealing ring 12 into the groove of the socket in a "heart shape", and then slowly squeeze another ductile iron pipe 11 into the socket, and make the sealing ring 12 completely wrap the pipe, Finally, the pipeline is fixed on the concrete pier 13 with the U-shaped clip 14, the installation is completed, anti-corrosion treatment is done, and finally backfilling and covering are carried out.

The existing socket reinforcement structure has the following defects: First, after the excavation of the trench and the clay at the bottom has been compacted, the concrete buttress 13 is poured, and the pouring level is not uniform and the proportion of uneven height is very high during the pouring process. Large, and need to concrete curing, until the strength of the concrete buttress 13 meets the requirements, the pipeline installation can be carried out, prolonging the construction period. Secondly, the concrete foundation is used. At present, most of the on-site construction operations are not standardized. The use of concrete materials and construction techniques cannot meet the standards. Often, in order to catch up with the progress, the installation work will be carried out when the foundation is not up to standard, which makes the quality of pipeline installation unacceptable. To guarantee; once the gravel between the concrete buttresses 13 is not well filled, and there is a large mechanical process or a large external force above, stress deformation will occur, resulting in adverse consequences. Thirdly, since U-shaped clips 14 are used for rigid fixing, anchor bolts are required for fastening, so electric drills are required to drill holes, thereby increasing the construction process and increasing the cost. If there is no external power supply around the construction site, a generator is required for temporary power generation , wasting energy, polluting the environment, generating noise, and affecting the production and life of surrounding residents.

Utility model content

(1) Technical problems to be solved

The utility model provides a device for strengthening socket connections of nodular cast iron pipes to solve the problems of time-consuming, laborious and cumbersome construction for socket reinforcement in the prior art.

(2) Technical solutions

In order to solve the above technical problems, the utility model provides a device for strengthening the socket connection of ductile iron pipes, which includes at least two ductile iron pipes connected in sequence and a reinforcement assembly for strengthening the connection between two adjacent ductile iron pipes;

The water-facing end of the ductile iron pipe is provided with a socket, the tail end of the previous ductile iron pipe is inserted into the socket of the water-facing end of the adjacent next ductile iron pipe, and the at least two ductile iron pipes are connected in sequence ;

The reinforcement assembly includes a flange member, a P-shaped clip, and a rubber gasket matched with the P-shaped clip. The rubber gasket and the P-shaped clip are sequentially arranged from the inside to the outside and clamped on the outer peripheral wall of the ductile iron pipe near the tail end, The flange member includes a first flange that is close to the P-type clamp and sleeved on the outer peripheral wall of the ductile iron pipe upstream of the P-type clamp, and is adjacent to the socket and sleeved on the outer peripheral wall of the ductile iron pipe downstream of the socket. The second flange and the first bolts matched with the first flange and the second flange, wherein the first flange on the last ductile iron pipe and the next adjacent ductile iron The second flange on the pipe is matched and fastened by the first bolts.

Further, the outer periphery of the rubber sleeve is zigzag.

Further, the axial width of the rubber sleeve is larger than the axial width of the P-shaped clamp, and the rubber sleeve is arranged close to the socket of the next ductile iron pipe.

Further, the distance between the P-shaped clip and the socket of the next ductile iron pipe is 5-20mm.

Further, the P-shaped clip is two semicircular structures joined by second bolts.

Further, only two ends of the first bolt are provided with threads.

Further, the first bolts are arranged on both sides of the first flange, and both sides of the second flange are provided with suitable nuts, wherein the corresponding nuts on the opposite surfaces of the two flanges are anti-loosening Nuts, the corresponding nuts on the opposite sides of the two flanges are fastening nuts.

Further, the bolts are coated with viscous asphalt.

Further, the first flange, the second flange and the first bolts are all made of 304 stainless steel;

The material of the P-shaped clip is hot-dip galvanized material.

Further, the thickness of the rubber sleeve is not less than 10mm.

(3) Beneficial effects

The utility model provides a device for strengthening the socket connection of ductile iron pipes. The rubber sleeve pad is firmly fixed on the end of the previous ductile tube close to the socket of the next ductile tube through the P-type clamp, so as to ensure that the P-type clamp does not It will slide axially on the ductile iron pipe, and then connect the installed first flange and the second flange on both sides of the socket through high-strength bolts to make it a whole device, and then fix two adjacent flanges. Ductile iron pipe. The device for strengthening the socket connection of ductile iron pipes of the utility model is simple and easy to operate, can be quickly installed and constructed, and improves the installation efficiency when the ductile tubes are irradiated; and the device is firm and reliable, improving the laying quality of the joints of the ductile tubes, and has the advantages of saving It has the advantages of saving time and labor, saving manpower and mechanical costs.

In addition to the technical problems solved by the utility model described above, the technical features of the technical solutions formed and the advantages brought by the technical features of these technical solutions, other technical features of the utility model and the advantages brought by these technical features The advantages will be further explained in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the installation sketch map of existing nodular cast iron pipeline;

Fig. 2 is the schematic diagram of the device for strengthening the socket connection of ductile iron pipelines according to the embodiment of the present invention;

Fig. 3 is a longitudinal sectional view of the device for strengthening the socket connection of ductile iron pipes according to the embodiment of the present invention along the position of the P-shaped clamp;

Fig. 4 is a schematic cross-sectional view of the clamping connection between the P-shaped clip, the rubber sleeve and the ductile iron pipe.

In the figure: 11: the second ductile iron pipe, 11a: the first ductile iron pipe; 12: sealing ring, 13: concrete buttress, 14: U-shaped card, 15: socket; 21: the first flange, 22 : second flange; 3: P-shaped clamp; 4: rubber gasket; 5: second bolt; 6: flange hole; 7: first bolt; 8: fastening nut.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In addition, in the description of the present utility model, unless otherwise specified, the meanings of "multiple", "multiple roots" and "multiple groups" are two or more, "several", "several roots", "several "Several groups" means one or more than one.

The direction of the arrow in Figures 1 and 2 indicates the direction of the water flow. The head end of the ductile iron pipe refers to the end facing the water flow; The root is the next one near the downstream of the water flow; the specific installation is to install each pipe in sequence against the direction of the water flow.

As shown in Figure 2, the device for strengthening the socket connection of ductile iron pipes provided by the embodiment of the present utility model includes a plurality of ductile iron pipes connected in sequence (three are drawn for convenience in the figure) and two adjacent reinforcement pipes are reinforced. Reinforcement components for ductile iron pipe connections.

The water-facing end of the ductile iron pipe is provided with a socket 15, and the tail end of the previous ductile iron pipe is inserted into the socket 15 at the head end of the adjacent next ductile iron pipe to connect in sequence. For convenience of description, the last ductile iron pipe is defined as the first ductile iron pipe 11, and the downstream adjacent pipe connected to the first ductile iron pipe 11 is the second ductile iron pipe 11a.

The reinforcement assembly includes a flange member, a P-type clip 3 and a rubber gasket 4 that cooperates with the P-type clip. The rubber gasket 4 and the P-type clip 3 are sequentially arranged from the inside to the outside and are stuck on the end of the ductile iron pipe near the end. On the peripheral wall, the flange member includes a first flange 21 close to the P-type clamp 3 and sleeved on the peripheral wall of the ductile iron pipe upstream of the P-type clamp 3, adjacent to the socket 15 and sleeved downstream of the socket 15 The second flange 22 on the outer peripheral wall of the ductile iron pipe and the first bolt 7 matched with the flange holes 6 on the first flange 21 and the second flange 22, wherein the last one The first flange 21 on the ductile iron pipe (the first ductile iron pipe 11) is matched with the second flange 22 on the next ductile iron pipe (the second ductile iron pipe 11a) adjacent to it through the first flange 21. A bolt 7 is fastened.

The flange plate of the device for strengthening the socket connection of ductile iron pipes of the utility model can be composed of two 304 stainless steel flange plates (the diameter of which is customized according to the actual situation), and is connected by 304 stainless steel bolts/nuts, which can effectively prevent external Damage to devices by corrosive substances.

As a preferred solution, the first bolt has a structure with threads at both ends and no thread in the middle, and the thread length at both ends is 50mm; and the first bolt 7 is on both sides of the first flange 21 1. Both sides of the second flange 22 are provided with suitable nuts, wherein the corresponding nuts on the opposite faces of the two flanges are lock nuts, and the corresponding nuts on the opposite sides of the two flanges are fastening nuts 8 .

Simultaneously, the viscosity asphalt can be coated on the first bolt to increase the damping coefficient of the "tightening nut 8" and the internally measured locknut.

The outer circumference of the rubber sleeve pad 4 can be a zigzag (or W-shaped) rubber pad with a thickness of more than 10mm made of natural rubber, and its width is customized according to the width of the P-type clip 3, and slightly larger than the P-type clip 3 Width 5-20mm, the jack socket 15 is installed, that is, the distance between the P-shaped clamp 3 and the next ductile iron pipe is 5-20mm.

The rubber sleeve 4 has strong corrosion resistance, good mechanical properties and high strength of the material, which improves the bite force, making it difficult for the pipe to slide in the P-type clamp 3; at the same time, the P-type clamp 3 has to bear the stress of the two flanges when they are fastened by bolts. Pulling force, the rubber sleeve pad 4 is slightly wider than the P-shaped clip, which can play a buffering role in the rigid connection of the two receiving pipes in the axial direction.

The P-shaped clamp of the device for strengthening the socket connection of ductile iron pipes in this embodiment can be made of hot-dip galvanized material, which is a two-semicircular structure that is joined by the second bolt 5 .

When in use, first when the downstream second ductile iron pipe 11a is in place, insert the second flange 22 from the tail end until the neck of the socket 15, and then place the special sealing ring 12 into a "heart-shaped "Put it into the groove of the socket 15, and at the same time put the first flange 21 into the tail end of the upstream first ductile iron pipe 11, and then align the tail end of the first ductile iron pipe 11 with the second ductile iron pipe 11a socket, before socketing, check whether the sealing ring is stable and upright. After confirming that it is correct, forcefully squeeze the first ductile iron pipe 11 into the socket of the second ductile iron pipe 11a to ensure that the sealing ring seals the pipe Completely encased. Repeat the above content for subsequent pipelines and continue laying.

As shown in Figure 3 and Figure 4, when the first ductile iron pipe 11 is completely squeezed into the socket of the second ductile iron pipe 11a, a suitable rubber gasket 4" is cut according to the diameter of the pipe, and the width is slightly larger than that of the P type The size of the clamp 3 is about 10mm. At a position about 10mm away from the socket of the second ductile iron pipe, fasten the P-type clamp 3 to the surface of the rubber sleeve 4 and tighten the second bolt 5 so that the entire P-type clamp tightly embraces the first A ductile iron pipe 11. Finally, the flanges on both sides are fastened by the first bolt 7 made of 304 stainless steel, and the fastening nut 8 is locked as shown in Figure 2. At the same time, it should be ensured that the elevation of the flange on the left is in full contact with the elevation of the P-clamp, and then the anti-loosening nuts inside the first bolt 7 should be tightened to prevent bolt movement from causing fastening failure.

In summary, the device for strengthening the socket connection of ductile iron pipes in this embodiment has the following advantages:

1. Its material requirements are not high, and it can be obtained locally, and it is easy to purchase. All components can be purchased in hardware material stores of all sizes, and there is no need for concrete batching and mixing.

2. The device is simple, quick and easy to operate, especially for the laying of small and medium-sized water supply ball ink pipelines. Its installation is firm, once and for all, improving installation efficiency, without waiting for the concrete curing period to expire, and can be constructed on site anytime, anywhere, reducing construction procedures, avoiding a large number of electric tools, temporary distribution boxes, cables and other tools or materials, and operators Going light will do the trick.

3. The structure of this device is stable, the construction is fast, the operating threshold is low, easy to use, the failure rate of later maintenance is small, and it is not easy to burst the pipe and run out of water. It is safe and firm during the system pressure test process, ensuring the stability of the system and no running out. Drip phenomenon occurs.

4. This device can be used in urban rail transit outdoor water supply pipelines and fire-fighting water supply pipelines, greatly reducing labor costs, machinery costs, changes in construction techniques, improving work efficiency, and has considerable economic benefits and practical value for widespread promotion.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (10)

1. A kind of 1. device for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：Including sequentially connected at least two balls Graphite cast iron pipe and the reinforcement assembly for reinforcing adjacent two balls graphite cast iron pipe connection；

   The end facing water of the ductile iron pipe is provided with bell and spigot, and the tail end of upper ball graphite cast iron pipe is inserted into adjacent next ball In the bell and spigot of the end facing water of graphite cast iron pipe, at least two ball graphite cast iron pipes are sequentially connected；

   The reinforcement assembly includes flange component, p-type folder and the rubber sleeve gasket coordinated with p-type folder, the rubber sleeve gasket and p-type Folder is arranged and is stuck in ductile iron pipe by the periphery wall of caudal part, described flange component is included close to p-type from inside to outside successively The first flange disk that presss from both sides and be set on the ductile iron pipe periphery wall of p-type folder upstream, close to bell and spigot and be set in bell and spigot Second flange disk on the periphery wall of the ductile iron pipe in downstream and supporting with the first flange disk and second flange disk First bolt, wherein, on first flange disk on upper ball graphite cast iron pipe next ball graphite cast iron pipe adjacent thereto Two ring flanges are supporting to be fastened by first bolt.
2. 2. the device according to claim 1 for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：The rubber sleeve The periphery indention of pad.
3. 3. the device according to claim 1 for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：The rubber sleeve The axial width of pad is more than the axial width of p-type folder, and the rubber sleeve gasket abuts the socket joint of next ball graphite cast iron pipe Mouth is set.
4. 4. the device according to claim 3 for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：The p-type folder Distance apart from the bell and spigot of next ball graphite cast iron pipe is 5-20mm.
5. 5. the device according to claim 1 for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：The p-type folder To pass through the two halves circular configuration of the second bolt pairing.
6. 6. the device of ductile iron pipeline socket joint connection is reinforced according to claim 1-5 any one of them, it is characterised in that：Institute That states the first bolt is only provided at both ends with screw thread.
7. 7. the device according to claim 6 for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：First spiral shell Bolt is located at the both sides of first flange disk, the both sides of second flange disk and is both provided with the nut of adaptation, wherein, two ring flange opposite faces Upper corresponding nut is stop nut, and corresponding nut is clamp nut in two ring flange back.
8. 8. the device according to claim 6 for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：On the bolt Scribble viscosity asphalt.
9. 9. the device according to claim 1 for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：First method Blue disk, second flange disk and the first bolt are 304 stainless steels；

   The material of the p-type folder is hot dip Zinc material.
10. 10. the device according to claim 1 for reinforcing the connection of ductile iron pipeline socket joint, it is characterised in that：The rubber The thickness of sleeve gasket is not less than 10mm.