CN206723656U - A kind of injection tube fast joint structure - Google Patents

Abstract

The utility model relates to a quick connection structure of a blowing pipe, comprising a main pipe, a blowing pipe, a fixed beam, and fastening bolts and nuts; the main pipe and the blowing pipe are locked with the flange of the blowing pipe to form a sealing structure, Locked on the fixed beam; among them: more than three bolts are evenly distributed on the circumference of the main pipe flange; there are through holes corresponding to the number of bolts in the flange of the spray pipe, and the diameter of the through hole is larger than the outer diameter of the nut. An opening slot is opened on the fixed ear; a flange locking ring is arranged on the outer end of the blowing pipe flange, and the flange locking ring has an opening and locking holes distributed on the circumference, and the locking holes face the same rotation direction with Arc-shaped groove; the diameter of the lock hole is larger than the outer diameter of the nut, and the width of the arc-shaped groove is larger than the diameter of the bolt but smaller than the diameter of the nut. The utility model has the characteristics of ingenious conception, reasonable design, and simple and fast operation; the purpose of quickly disassembling and assembling the blowing pipe can be realized as long as the nut is loosened without breaking away from the bolt.

Description

A quick connection structure of blowing pipe

Technical field:

The utility model belongs to the field of dust removal equipment, in particular to a quick connection structure of a blowing pipe.

Background technique:

In recent years, my country's bag filter has achieved rapid development. Its specifications have gradually increased and its varieties have varied. The filtering area has grown from a few hundred square meters to tens of thousands of square meters, and the processing air volume has also increased from tens of thousands of cubic meters to several hundred. million cubic meters. Most of these dust collectors are pulse bag dust collectors in terms of injection form. There are injection pipes above the filter bags. There are several injection holes on each injection pipe, and each injection hole is aimed at a filter bag. When cleaning dust, the pulse air flow from the pulse valve is injected into the filter bag through the injection effect of the injection hole, and induces the surrounding gas to make the filter bag vibrate, and the effect of the reverse air flow makes the dust on the filter bag fall off down to complete the cleaning process. Since each dust collector has hundreds of blowing pipes, the amount of bolts and nuts that need to be locked is very large, and the work is cumbersome. How to provide a scheme that can be quickly assembled and disassembled becomes the research object of the present utility model.

Invention content:

The purpose of this utility model is to design a kind of blowing pipe fast connection structure that cooperates with nut by means of a flange lock ring on the outer end face of the close-fitting main pipe flange and blowing pipe flange.

The technical scheme of the utility model is realized in the following way: a quick connection structure of the blowing pipe, including the main pipe, the blowing pipe and the fixed beam; It is fixed on the fixed beam; it is characterized in that: more than three bolts are evenly distributed on the circumference of the main pipe flange, and nuts are arranged on the threaded section of the bolts; there are through holes corresponding to the number of bolts in the blowing pipe flange, and the diameter of the through holes is larger than The outer diameter of the nut can be axially inserted into the bolt with the nut. The tail of the blowing pipe is provided with a fixed ear, and the fixed ear is provided with an opening groove that can be radially inserted into the bolt; a flange lock is arranged on the outer end of the blowing pipe flange. The flange lock ring has an opening that can be inserted into the blowing pipe. There are lock holes corresponding to the number of bolts distributed on the circumference. The lock holes have arc-shaped grooves facing the same rotation direction; The diameter of the arc groove is larger than the diameter of the bolt but smaller than the diameter of the nut.

The bolts are stud bolts with threaded sections at both ends, threaded holes are processed on the main pipe flange, and the bolts are locked on the main pipe flange by means of threads.

The opening of the opening groove on the fixed ear of the blowing pipe faces the flange side of the blowing pipe, and the center line of the opening groove is parallel to the axis of the blowing pipe.

The utility model has the characteristics of ingenious conception, reasonable design, simple and fast operation; as long as the nut is loosened without breaking away from the bolt, the flange of the blowing pipe and the flange lock ring can be removed, realizing the purpose of quick disassembly and assembly, saving maintenance Time can also prolong the service life of bolts.

Description of drawings:

Below in conjunction with specific legend the utility model is further described:

Figure 1 Schematic diagram of the general assembly of the main pipe and the blowing pipe

Figure 2 Decomposition schematic diagram of the relationship between a single blowing pipe and the main pipe

in

1—main pipe 11—main pipe flange 111—threaded hole 112—recessed part

113—sealing groove 2—injection pipe 21—injection pipe flange 211—through hole

22—fixed ear 221—open slot 3—fixed beam 4—bolt

41—thread section 5—nut 6—flange lock ring 61—opening

62—lock hole 621—arc groove 7—sealing ring

detailed description:

Referring to Fig. 1 and Fig. 2, the quick connection structure of the spray pipe includes the main pipe 1, the spray pipe 2, the fixed beam 3, the bolt 4, the nut 5 and the flange lock ring 6.

The main pipe 1 is provided with a plurality of main pipe flanges 11 on the side connecting the blowing pipe 2, and more than three bolts 4 are evenly distributed on the circumference of the main pipe flange 11; The threaded section 41 is processed with a threaded hole 111 on the main pipe flange 11 , the bolt 4 is locked on the main pipe flange 11 by means of threads, and the nut 5 is screwed on the threaded section 41 at the other end. The bolt 4 can also be fixed on the main pipe flange 11 by means of welding or the like.

One end of the blowing pipe 2 is provided with a blowing pipe flange 21, and the other end is welded with a fixed ear 22; the blowing pipe flange 21 is provided with a through hole 211 corresponding to the number of bolts, and the diameter of the through hole 211 is larger than the outer diameter of the nut 5, and can be axially Insert the bolt 4 with a nut; on the fixed ear 22 at the end of the blowing pipe, there is an opening groove 221, the opening of the opening groove 221 faces the blowing pipe flange 21 side, and the center line of the opening groove 221 is in line with the axis of the blowing pipe 2 parallel. During installation, the blowing pipe 2 moves horizontally from the tail to the flange, so that the opening groove 221 can be radially inserted into the bolt 4 on the fixed beam 3, and the nut 5 can be tightened. The bolts used on the fixed beam 3 are consistent with the bolts used on the main pipe flange 11, both are stud bolts, and can also be fixed on the fixed beam 3 by welding.

The flange lock ring 6 has an opening 61 that can be inserted into the blowing pipe 2, and lock holes 62 corresponding to 4 bolts are distributed on the circumference; the lock holes 62 have arc-shaped grooves 621 in the same direction of rotation; the lock holes 62 The caliber is larger than the outer diameter of the nut 5, and the width of the arc groove 621 is larger than the diameter of the bolt 4 but smaller than the diameter of the nut 5. When installing, it can be directly inserted into the bolt 4 with the nut 5 in the axial direction without disengaging the nut 5, and then rotate the flange The lock ring 6 makes the arc groove 621 radially cut into the bolt 4, and then the nut 5 is tightened. The flange locking ring 6 is sleeved on the outer end surface of the blowing pipe flange 21 .

As shown in Figure 2, on the contact surface between the main pipe flange 11 and the blowing pipe flange 21, there are also stepped parts that cooperate with each other, the side of the main pipe flange 11 is a recess 112, and the side of the blowing pipe flange 21 is a boss The cooperation between the two is not only conducive to sealing, but also facilitates the alignment operation during docking; on the side of the main pipe flange 11, a sealing groove 113 is also provided for embedding the sealing ring 7.

Installation: Fix the bolt 4 on the main flange 11 and the fixed beam 3 in advance, and screw the nut 5 on the end of the threaded section 41, which is in a loose state; the blowing pipe 2 is moved from the tail to the end of the flange, and the opening groove diameter Insert the bolt 4 on the fixed beam 3 and the through hole 211 on the flange 21 of the blowing pipe into the bolt 4 on the main flange 11 from the axial direction, and put the flange lock ring 6 in place; the flange lock ring 6 uses the opening Insert 61 into the blowing pipe 2, adjust the lock hole 62 to align with the bolt 4, insert it from the axial direction, and rotate the flange lock ring 6, so that the arc groove 621 radially cuts into the bolt 4 in place, and tighten the nut 4 to realize the blowing pipe 2 installation tasks; reverse operation, only need to loosen the nut 4, the blowing pipe 2 can be disassembled for maintenance, without completely loosening the nut 4, not only can reduce the number of rotations, especially omit Trouble.

Claims (3)

1. A quick connection structure of the blowing pipe, including the main pipe, the blowing pipe and the fixed beam; the main pipe and the blowing pipe are locked with the flange of the blowing pipe to form a sealing structure, and the tail of the blowing pipe is locked on the fixed beam; its characteristics The reason is: there are more than three bolts evenly distributed on the circumference of the main pipe flange, and nuts are arranged on the threaded section of the bolts; there are through holes corresponding to the number of bolts in the flange of the spray pipe, and the diameter of the through holes is larger than the outer diameter of the nuts, which can be axially sleeved. Insert the bolts with nuts, and the tail of the spray pipe is provided with a fixed ear, and the fixed ear is provided with an opening groove that can be radially inserted into the bolt; a flange lock ring is provided on the outer end of the flange of the spray pipe, and the flange lock ring has One can be inserted into the opening of the blowing pipe, and there are lock holes corresponding to the number of bolts distributed on the circumference. The lock holes have arc grooves facing the same rotation direction; the diameter of the lock holes is larger than the outer diameter of the nut, and the width of the arc groove is larger than that of the bolts. diameter smaller than the nut diameter. 2. A quick connection structure for blowing pipes according to claim 1, characterized in that: the bolts are stud bolts with threaded sections at both ends, the main pipe flange is processed with threaded holes, and the bolts are locked by thread fit on the main flange. 3. A quick connection structure for blowing pipe according to claim 1, characterized in that: the opening of the opening groove on the fixing ear of the blowing pipe faces the flange side of the blowing pipe, and the center line of the opening groove is parallel to the axis of the blowing pipe.