CN206754620U - Double cushion rubber steel joint reinforced concrete sewer pipes - Google Patents

Abstract

The utility model belongs to underground pipe network technical field, it is related to a kind of double cushion rubber steel joint reinforced concrete sewer pipes, bellmouth steel loop and socket steel ring including tight fit connection, the outside connection end surfaces of socket steel ring are provided with two annular grooves, an O-shaped cushion rubber is respectively provided with each annular groove, pressure testing pipe is set between two annular grooves；The inwall of socket steel ring includes socket steel ring inwall one, socket steel ring inwall two, the socket steel ring inwall three being sequentially connected with, and insertion at socket steel ring inwall two is corresponded on socket steel ring and sets injected hole, socket steel ring inwall two is coaxially disposed Grouting Pipe with injected hole；The fitting of socket steel ring inwall three sets expansion adhesive tape one, and the fitting of bellmouth steel loop inwall sets expansion adhesive tape two；The bellmouth steel loop, socket steel ring lumen loading concrete, the problem of interface drainpipe can effectively avoid interface seepage.

Description

Double cushion rubber steel joint reinforced concrete sewer pipes

Technical field

The utility model belongs to underground pipe network technical field, is related to a kind of double cushion rubber steel joint reinforced concrete sewer pipes.

Background technology

The drainpipe or push pipe of c-type interface are widely used on the market today, are all used at present in low internal pressure, without in On the pipeline of pressure, operating pressure is typically within 0-0.2MPa（Because the product is the reinforced concrete structure that uses, its is impervious to be By concrete）.The pipe is used by power department as electric power piping lane again at present, i.e., power cable is set up in pipe after jacking, from And reduce the erection of cable ground high-altitude.But find the pipeline of c-type interface pattern after jacking it is difficult to avoid one by putting into practice There is leak, infiltration phenomenon in a little interface tubes, through thinking some reason below main produce：

1.C type interface bell and spigot dimensional fits gap deviations are a main cause greatly, the common life of bellmouth of c-type interface Production method is to polish bellmouth steel bar by joint welding after theoretical length fixed length volume circle, and this production method is difficult to protect Its precision is demonstrate,proved, because:（1）Just there is certain deviation on the steel plate thickness of our market purchasings, such as purchase 10mm steel plates often steel The actual (real) thickness of plate is 9.7-9.9mm, even if the cutting length of bellmouth steel bar is very accurate, and the bellmouth internal diameter size produced is just Bigger than actual design size 0.2-0.6mm；（2）The roundness of bigbore pipe line steel bellmouth is the bottom by pouring concrete mould Mode diameter controls, and the gap of bed die and steel bellmouth is the diameter dimension of guarantee bellmouth steel loop and the key of roundness, by It is not easily achieved accurately in the internal diameter size of steel bellmouth, bigger error（Often bellmouth size is bigger than normal）Cause steel bellmouth and punching block bottom The gap of mould is also bigger than normal, while is that may abut bed die if any most of positions in 360 ° of steel bellmouth,（Typically will not be 360 ° Gap is the same）The gap for having small part steel bellmouth and bed die can be very big, and steel bellmouth protrudes outward, locally has 5- 15mm, the roundness deviation for thereby resulting in the steel bellmouth of production tube are larger；

The socket end of 2.C type interfaces is concrete structure, it mainly by cast concrete pipe die external mold upper end size Precision ensures that, although punching block can take into account precision when processing, it has been very that the mould of cement products, which is typically accurate to millimeter, It is good, therefore it is normal that it is smaller 3-5mm than the average diameter size of needs；

3. because the size of its bell and spigot cannot be guaranteed its precision, 360 ° of gap between the bell and spigot of c-type interface is caused Will not be uniform, local gap very little causes rubber strip compression excessive, and local gap causes greatly rubber strip compression very few without sealing；

The rubber weather strip of 4.C type interfaces is the wedge type rubber strip used, is rubber strip and bellmouth plate when installing jacking Sliding in place, but probably has a small amount of part when moving sliding due to rubber strip pressure because the gap of bell and spigot is uneven Contracting amount is excessive and is cut bad or turn and causes sealing joint unreliable, it is also possible to local because rubber strip compression is too small without energy It is unreliable that sealing and causing seals.

Due to some above-mentioned reason, the sealing joint of the large diameter pipeline of c-type interface can not be accomplished to be fully sealed reliably It is impervious.

The content of the invention

The utility model is in view of the above-mentioned problems, provide a kind of double cushion rubber steel joint reinforced concrete sewer pipes, this kind of interface Drainpipe can effectively avoid the problem of interface seepage.

According to the technical solution of the utility model：A kind of double cushion rubber steel joint reinforced concrete sewer pipes, including tight fit The bellmouth steel loop and socket steel ring of connection, it is characterised in that：The outside connection end surfaces of socket steel ring are provided with two annular grooves, each An O-shaped cushion rubber is respectively provided with the annular groove, O-shaped cushion rubber realizes the sealing between bellmouth steel loop and socket steel ring；Socket steel ring Surface is provided with pressure testing hole and injected hole, and socket steel ring is set away from pressure testing hole one end inwall expands adhesive tape one, between two annular grooves Pressure testing pipe, injected hole connection Grouting Pipe, the bellmouth steel loop, socket steel ring lumen loading concrete are set.

As further improvement of the utility model, the tapered external diameter in the bellmouth steel loop inwall outer end is big, internal diameter is small Frustum shape.

As further improvement of the utility model, the end face of the socket steel ring connection end sets pad, pads cylindrical Side face is extended at the inwall of socket steel ring, and setting polysulfide sealant one, polysulfide sealant one are cylindrical at the outer circumference surface of pad Side face fitting bellmouth steel loop inwall is set, and pad inwall fitting sets polysulfide sealant two.

As further improvement of the utility model, the socket steel ring inwall one, socket steel ring inwall two, socket steel ring The three's internal diameter of inwall three gradually increases.

As further improvement of the utility model, the circumferential surface of the socket steel ring corresponds to socket steel ring inwall two Locate the external diameter of ring body less than the external diameter at socket steel ring both ends.

As further improvement of the utility model, the inwall of the socket steel ring forms the socket steel that internal diameter increases successively Ring inwall one, socket steel ring inwall two, socket steel ring inwall three, at socket steel ring inwall two insertion injected hole, socket steel are set Ring inwall two is coaxially disposed Grouting Pipe with injected hole；The fitting of socket steel ring inwall three sets expansion adhesive tape one, bellmouth steel loop inwall Fitting sets expansion adhesive tape two.

It is of the present utility model to have technical effect that：The utility model product structure is simple, reasonable, for existing c-type interface The situation of the interface percolating water of drainpipe carries out specific aim improvement, is sealed, is provided simultaneously with two using two O-shaped cushion rubbers Pressure testing inspection is carried out among O-shaped cushion rubber；The utility model product greatly improves drain interface sealing property, in jack-in process The rubber strip at interface position is not influenceed by the top power of any jacking, and retains the condition of flexible interface, still can conveniently correction and Curved jacking.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings.

In Fig. 1, including bellmouth steel loop 1, socket steel ring 2, the 2-1 of socket steel ring inwall one, the 2-2 of socket steel ring inwall two, insert The 2-3 of mouth steel loop inwall three, pressure testing pipe 3, Grouting Pipe 4, O-shaped cushion rubber 5, concrete 6, pad 7, polysulfide sealant 28, polysulfide sealing Glue 1, expansion adhesive tape 1, expansion adhesive tape 2 11 etc..

As shown in figure 1, the utility model is a kind of double cushion rubber steel joint reinforced concrete sewer pipes, including tight fit connection Bellmouth steel loop 1 and socket steel ring 2, the outside connection end surfaces of socket steel ring 2 are provided with two annular grooves, equal in each annular groove One O-shaped cushion rubber 5 is set, and O-shaped cushion rubber 5 realizes the sealing between bellmouth steel loop 1 and socket steel ring 2；The surface of socket steel ring 2 is provided with Pressure testing hole and injected hole, socket steel ring 2 set expansion adhesive tape 1 away from pressure testing hole one end inwall, examination are set between two annular grooves Pressure pipe 3, injected hole connection Grouting Pipe 4, the bellmouth steel loop 1, the lumen loading concrete 6 of socket steel ring 2.

The frustum shape that the tapered external diameter in inwall outer end is big, internal diameter is small of bellmouth steel loop 1.

The end face of the connection end of socket steel ring 2 sets pad 7, and 7 outer circumference surfaces of pad are extended at the inwall of socket steel ring 2, Polysulfide sealant 1 is set at the outer circumference surface of pad 7, and the inwall of the outer circumference surface of polysulfide sealant 1 fitting bellmouth steel loop 5 is set Put, pad 7 inwalls fitting sets polysulfide sealant 28.

The 2-1 of socket steel ring inwall one, the 2-2 of socket steel ring inwall two, the 2-3 three's internal diameter of socket steel ring inwall three gradually increase Add.

The external diameter that the circumferential surface of socket steel ring 2 corresponds to ring body at the 2-2 of socket steel ring inwall two is less than 2 liang of socket steel ring External diameter at end.

The inwall of socket steel ring 2 formed the 2-1 of socket steel ring inwall one that internal diameter increases successively, the 2-2 of socket steel ring inwall two, Insertion sets injected hole, the 2-2 of socket steel ring inwall two and injected hole at the 2-3 of socket steel ring inwall three, the 2-2 of socket steel ring inwall two It is coaxially disposed Grouting Pipe 4；The 2-3 of socket steel ring inwall three fittings set expansion adhesive tape 1, and the fitting of the inwall of bellmouth steel loop 1 sets swollen Swollen adhesive tape 2 11.

The utility model is sealed using two O-shaped cushion rubbers 5, and two O-shaped cushion rubbers 5 are respectively arranged at socket steel ring 2 In two annular grooves, in design by the gap shrinks between socket steel ring 2 and bellmouth steel loop 1 to 0.5-1mm.

O-shaped cushion rubber 5 is widely used in water delivery, gas transmission, oil transportation and the sealing of most of chemicals.It is rich in good elasticity With resilience, appropriate hardness, good wearability, there is appropriate tensile strength, also with outstanding memory characteristic, once by Compression, " O " shape cushion rubber is invariably prone to recover initial cross sectional shape, so as to produce the thrust to contact surface.Can be according to not The kind of same use condition selection rubber（Such as natural rubber, nitrile rubber, neoprene, ethylene propylene diene rubber）.

Conveniently inspection it can be pressed by pressure testing pipe 3, it is convenient after pipe docking that pressure testing inspection is carried out to interface tube in pipe, use Hydraulic test, the section pressure testing one of installation one save, and this pressure testing had both examined whether tube coupling reaches anti-leakage requirement after docking, also will not shadow Ring construction speed（General pressure testing inspection one time constant pressure 3 minutes, about 10 minutes required time）.

Claims (6)

1. a kind of double cushion rubber steel joint reinforced concrete sewer pipes, include the bellmouth steel loop of tight fit connection（1）And socket steel ring （2）, it is characterised in that：Socket steel ring（2）Outside connection end surfaces be provided with two annular grooves, be each respectively provided with one in the annular groove Individual O-shaped cushion rubber（5）, O-shaped cushion rubber（5）Realize bellmouth steel loop（1）And socket steel ring（2）Between sealing；Socket steel ring（2）Surface Provided with pressure testing hole and injected hole, socket steel ring（2）Away from pressure testing hole one end inwall, expansion adhesive tape one is set（10）, two annular grooves it Between set pressure testing pipe（3）, injected hole connection Grouting Pipe（4）, the bellmouth steel loop（1）, socket steel ring（2）Lumen loading concrete （6）.

2. double cushion rubber steel joint reinforced concrete sewer pipes as claimed in claim 1, it is characterised in that：The bellmouth steel loop （1）The frustum shape that the tapered external diameter in inwall outer end is big, internal diameter is small.

3. double cushion rubber steel joint reinforced concrete sewer pipes as claimed in claim 1, it is characterised in that：The socket steel ring （2）The end face of connection end sets pad（7）, pad（7）Outer circumference surface extends to socket steel ring（2）Inwall at, pad（7）'s Polysulfide sealant one is set at outer circumference surface（9）, polysulfide sealant one（9）Outer circumference surface is bonded bellmouth steel loop（5）Inwall is set, Pad（7）Inwall fitting sets polysulfide sealant two（8）.

4. double cushion rubber steel joint reinforced concrete sewer pipes as claimed in claim 1, it is characterised in that：In the socket steel ring Wall one（2-1）, socket steel ring inwall two（2-2）, socket steel ring inwall three（2-3）Three's internal diameter gradually increases.

5. double cushion rubber steel joint reinforced concrete sewer pipes as claimed in claim 1, it is characterised in that：The socket steel ring （2）Circumferential surface correspond to socket steel ring inwall two（2-2）The external diameter of place's ring body is less than socket steel ring（2）It is outer at both ends Footpath.

6. double cushion rubber steel joint reinforced concrete sewer pipes as claimed in claim 1, it is characterised in that：The socket steel ring （2）Inwall form the socket steel ring inwall one that increases successively of internal diameter（2-1）, socket steel ring inwall two（2-2）, in socket steel ring Wall three（2-3）, socket steel ring inwall two（2-2）Place's insertion sets injected hole, socket steel ring inwall two（2-2）It is coaxial with injected hole Grouting Pipe is set（4）；Socket steel ring inwall three（2-3）Fitting sets expansion adhesive tape one（10）, bellmouth steel loop（1）Inwall fitting is set Put expansion adhesive tape two（11）.