CN211385468U - Air ring for pipeline painting machine and pipeline painting machine thereof - Google Patents

Abstract

The utility model relates to a pipeline technical field that sprays paint discloses a pipeline is air ring for coating machine and pipeline coating machine thereof, including inner ring and outer loop, the inner ring passes through the connecting piece with the outer loop and is connected formation air chamber groove, and the connecting piece sets up the direction and is parallel with the inner ring the central axis, and the air chamber groove has the air outlet, and the inner ring is the inner ring inclined plane of following the wind direction towards the outer terminal surface of air outlet, and the outer loop is towards the interior terminal surface of air outlet for forming the outer loop inclined plane of wedge air outlet with the cooperation of inner ring inclined plane, and inner ring and outer loop set up the gasket in the. The air ring inner ring and the air ring outer ring are combined and are matched and connected through the connecting piece and the gaskets, the air outlet gap can be easily and flexibly adjusted by setting the number of the gaskets and adjusting the connecting piece, and the adjusting precision is high and can reach 0.1 mm; the angles of the inner ring inclined plane and the outer ring inclined plane are designed, so that the air outlet direction is better; the inner ring inclined plane and the outer ring inclined plane form circular arc transition at the joint with the air chamber groove, and the sweeping angle and the sweeping effect can be effectively guaranteed.

Description

Air ring for pipeline painting machine and pipeline painting machine thereof

Technical Field

The utility model belongs to the technical field of the pipeline sprays paint, specifically, relate to a pipeline is gaseous ring for painting machine and pipeline painting machine thereof.

Background

The steel pipe painting is one of essential production processes in modern steel pipe production, and has the main function of uniformly spraying antirust paint with the thickness of about 10-20 mu m on the outer surface of a finished steel pipe to ensure the antirust and attractive functions of the steel pipe.

At present, two steel pipe painting modes which are generally adopted at home and abroad are as follows: one is an atomization type, namely, paint is atomized by high pressure and directly sprayed on the surface of a steel pipe to achieve a painting function, and the device has the advantages that the painting on the surface of the steel pipe is more uniform, but the defects are more, the paint film thickness is difficult to ensure, the paint waste is serious, and the environmental protection requirement cannot be met; the other mode is a blowing and spraying type, a layer of paint is uniformly sprayed on the surface of the steel pipe, high-pressure gas is blown out through the air ring, and the surface of the steel pipe on which the paint is sprayed is uniformly blown, so that a paint film is uniformly attached to the surface of the steel pipe according to the process requirement.

At present, the spray-painting equipment tends to be gradually replaced by the spray-painting equipment, but the equipment is not mature in design due to the experimental stage, and the problems of steel pipe hanging beads, leakage spraying, uneven paint film thickness and the like are often caused in production due to the reason of equipment design in the use process, and through intensive research, the following problems exist in the air ring of a key part of the spray-painting equipment:

1) an air ring on the existing spray type steel pipe painting machine consists of an inner ring b2 and an outer ring b1 (as shown in figure 2), two threaded air inlets b3 are arranged on the annular wall of the outer ring b1, the inner ring b2 and the outer ring b1 are connected in a threaded mode, an annular air chamber b4 is formed after the annular outer wall of the inner ring b2 and the annular inner wall of the outer ring b1 are connected in a threaded mode, the air inlets b3 are communicated with the annular air chamber b4, an air outlet b5 (called an air knife for short) is formed by a gap between an outer inclined surface at the top end of the inner ring b2 and an inner inclined surface of the outer ring b1, and the gap of the air outlet b5 is adjusted by rotating the threads b 6.

2) The key part of the air ring is at the air outlet, whether the knife edge gap is uniform is the key for ensuring the purging performance, the existing air ring adopts an acute-angle knife edge, and the acute-angle part is easy to damage in the actual work, thereby directly influencing the purging performance.

Disclosure of Invention

The utility model aims at overcoming the above-mentioned not enough of prior art, provide a pipeline is air ring for painting machine convenient to nimble adjustment air outlet clearance.

The utility model discloses provide one kind simultaneously be equipped with the pipeline painting machine of gas ring.

The technical scheme of the utility model is that: the utility model provides a pipeline is gaseous ring for painting machine, includes inner ring and outer loop, the inner ring passes through the connecting piece with the outer loop and is connected formation air chamber groove, the connecting piece sets up the direction and is parallel with inner ring the central axis, the air chamber groove has the air outlet, the outer terminal surface of inner ring orientation air outlet is the inner ring inclined plane of following the wind direction, the outer loop is towards the inner terminal surface of air outlet for forming the outer loop inclined plane of wedge air outlet with the cooperation of inner ring inclined plane, set up the gasket in the connecting piece junction between inner ring and the outer loop and be used for.

The utility model discloses further technical scheme is: the inner ring inclined plane and the plane of the bottom of the air chamber groove form an angle of 40-42 degrees, and the outer ring inclined plane and the plane vertical to the bottom of the air chamber groove form an angle of 40-42 degrees.

The utility model discloses a further technical scheme is: the inner ring inclined plane and the air chamber groove wall connected with the inner ring inclined plane are in arc transition, and the outer ring inclined plane and the air chamber groove wall connected with the outer ring inclined plane are in arc transition.

The utility model discloses still further technical scheme is: the radius of the arc is 3 mm.

The utility model discloses still further technical scheme is: the outer ring is also provided with a thickened part at the tail end of the inclined surface of the outer ring, and the size of a central hole of the thickened part is equal to that of a central hole of the inner ring.

The utility model discloses still further technical scheme is: the tail end of the center hole of the thickened part is arranged in a chamfer way.

The utility model discloses further technical scheme is: the inner ring and the outer ring are also provided with sealing rings on the contact surfaces close to and vertical to the gasket.

The utility model discloses further technical scheme is: the connecting piece is a screw or a threaded rod.

A pipeline painting machine is provided with the air ring for the pipeline painting machine.

Compared with the prior art, the utility model following beneficial effect has:

1) the inner ring and the outer ring of the air ring are combined and are matched and connected by adopting a connecting piece and gaskets, the gap of an air outlet (namely a knife edge) can be easily and flexibly adjusted by setting the quantity of the gaskets and adjusting the connecting piece, and the adjusting precision is high and can reach 0.1 mm;

2) the angles of the inner ring inclined plane and the outer ring inclined plane are designed, when the angles of the two inclined planes are about 41 degrees, the air outlet angle can be about 45 degrees, and the air outlet direction is better;

3) the inner ring inclined plane and the outer ring inclined plane form arc transition at the joint with the gas chamber groove, so that the defect that the traditional gas ring is easy to damage when the position of the gas ring is in a sharp angle is overcome, and the purging angle and the purging effect can be effectively ensured;

4) the tail end of the inclined plane of the outer ring is provided with the thickened part, and the inlet of the steel pipe at the thickened part is provided with the chamfer, so that the strength of the outer ring at the knife edge is enhanced, and the knife edge is effectively prevented from being damaged in the actual work.

The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic view of the structure of an air ring for a pipe painting machine according to example 1;

FIG. 2 is an enlarged view of portion I of FIG. 1;

fig. 3 is a schematic structural view of an air ring for a pipe painting machine in the prior art.

Detailed Description

Example 1

Providing a pipeline painting machine, wherein an air ring is arranged on the pipeline painting machine, as shown in figures 1 and 2, the air ring comprises an inner ring 1 and an outer ring 2, a boss 11 is arranged on the periphery of the inner ring 1, one end face of the outer ring 2 is matched with the boss, a threaded hole is uniformly formed on the boss 11 of the inner ring, a hole matched with the threaded hole is also formed on the end face matched with the boss 11 of the outer ring 2, a gasket 3 is arranged between the surface of the boss 11 and the end face of the outer ring 2, the inner ring 1 and the outer ring 2 are sequentially screwed into the threaded hole of the inner ring, the gasket and the end face hole of the outer ring through a screw 4 for matching and fixing, an air chamber groove 5 is formed after the inner ring 1 is connected with the outer ring 2, the screw 4 is arranged in a direction parallel to the central axis of the inner ring 1, the air chamber groove 5 is provided with an air outlet 51, the gap between the air outlet 51 is flexibly adjusted by adjusting the number of the gaskets 3 (i.e. increasing or decreasing the number of the gaskets) between the inner ring 1 and the outer ring 2.

The air ring work key part is at the air outlet (air knife for short), whether the air knife edge gap is even is the key for guaranteeing the blowing performance, the air outlet gap is adjusted through the combination of the gasket and the screw rod in the embodiment, the whole thickness of the gasket is even, the air outlet gap can be effectively guaranteed to be even, in addition, the screw rod is adopted to connect the inner ring and the outer ring, the air outlet gap is adjusted through the screw rod, the adjusting precision is high, and the precision can reach 0.1mm through verification.

The inner ring inclined plane 12 and the plane of the bottom of the air chamber groove 5 form an angle of 40-42 degrees, the outer ring inclined plane 21 and the plane vertical to the bottom of the air chamber groove form an angle of 40-42 degrees, the angles are preferably 41 degrees, the final air outlet angle is 45 degrees, and the optimal sweeping effect is formed.

In addition, the gas ring of this embodiment all is circular arc 6 transition between inner ring inclined plane 12 and the gas chamber groove 5 cell wall that meets with it, and between outer ring inclined plane 21 and the gas chamber groove 5 cell wall that meets with it, and this design has overturned the tradition that this department is sharp angle type edge, and the circular arc can make the gas of sweeping pass through to air outlet department smoothly, and the gas of sweeping can not produce the damage and then influence the performance of sweeping to the circular arc.

Of course, the size of the arc should not be too large to prevent adverse effect on the air outlet, and the radius of the arc 6 in this embodiment is designed to be 3 mm.

In order to further avoid the knife edge from being damaged in actual work, the outer ring is further provided with a thickened part 22 at the tail end of the inclined surface 21 of the outer ring, the size of a central hole of the thickened part is equal to that of a central hole of the inner ring, and the tail end of the central hole of the thickened part 22 is further provided with a chamfer 221. The steel pipe gets into the gas ring from this centre bore, because of the existence of thickening portion, the air outlet can not be touched with easily to the steel pipe, can not produce the harm to the air outlet.

The O-shaped sealing ring 7 is further arranged on the contact surface, close to and perpendicular to the gasket 3, of the inner ring 1 and the outer ring 2, specifically, a groove is formed in the contact surface of the inner ring, the O-shaped sealing ring is arranged in the groove, so that the fact that purging gas can not enter from the contact surface of the inner ring and the outer ring and stretch to the gasket arrangement position can be guaranteed, and powerful guarantee is provided for uniformly adjusting the air outlet gap of the inner ring and the outer ring.

The utility model is not limited to the specific structure or the connection mode, and the air ring structure which is the same as or close to the idea of the technical proposal is within the protection scope of the utility model.

Claims (10)

1. An air ring for a pipeline painting machine comprises an inner ring (1) and an outer ring (2), and is characterized in that: inner ring (1) is connected through the connecting piece with outer loop (2) and is formed air chamber groove (5), the connecting piece sets up the direction and is parallel with inner ring the central axis, the air chamber groove has air outlet (51), the outer terminal surface of inner ring orientation air outlet is inner ring inclined plane (12) for following with the wind direction, the inner terminal surface of outer ring orientation air outlet is outer ring inclined plane (21) for forming the wedge air outlet with the cooperation of inner ring inclined plane, set up gasket (3) at the connecting piece junction between inner ring (1) and outer ring (2) and be used for adjusting air outlet (51) clearance.

2. The air ring for a pipe painting machine according to claim 1, wherein: the inner ring inclined plane (12) and the plane of the bottom of the air chamber groove (5) form an angle of 40-42 degrees, and the outer ring inclined plane (21) and the plane vertical to the bottom of the air chamber groove (5) form an angle of 40-42 degrees.

3. The air ring for a pipe painting machine according to claim 2, wherein: the inner ring inclined plane (12) and the wall of the air chamber groove (5) connected with the inner ring inclined plane, and the outer ring inclined plane (21) and the wall of the air chamber groove (5) connected with the outer ring inclined plane are in arc transition (6).

4. The air ring for a pipe painting machine according to claim 3, wherein: the radius of the circular arc (6) is 3 mm.

5. The air ring for a pipe painting machine according to claim 4, wherein: the outer ring also has a thickened portion (22) at the end of the outer ring ramp (21), the thickened portion having a central bore of equal size as the central bore of the inner ring.

6. The air ring for a pipe painting machine according to claim 5, wherein: the end of the central hole of the thickened part is arranged in a chamfer (221).

7. The air ring for a pipe painting machine according to claim 1, wherein: the inner ring (1) and the outer ring (2) are also provided with a sealing ring (7) on the contact surface close to and vertical to the gasket (3).

8. The air ring for a pipe painting machine according to any one of claims 1 to 7, wherein: the connecting piece is a screw or a threaded rod.

9. A pipeline painting machine is characterized in that: an air ring for a pipe painting machine according to any one of claims 1 to 7 is provided.

10. A pipeline painting machine is characterized in that: an air ring for a pipe painting machine according to claim 8 is provided.

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