CN216282424U - Steel pipe preheating device before powder spraying - Google Patents

Abstract

A preheating device before powder spraying of a steel pipe comprises an insulation can, an upper heating plate, a lower heating plate, a sliding supporting plate and a return air system, wherein the upper parts of the left side and the right side of the insulation can are respectively provided with a pipe outlet and a pipe inlet, the pipe inlet of the insulation can is rotatably connected with an inlet door through a rotating shaft, the pipe outlet of the insulation can is rotatably connected with an outlet door through a rotating shaft, the inner walls of the inlet door and the outlet door are provided with side insulation plates, the top and the bottom of the insulation can are respectively provided with an upper insulation plate and a lower insulation plate, the side insulation plates are arranged on the side wall of the insulation can, the upper heating plate is arranged below the upper insulation plate, the lower heating plate is arranged above the lower insulation plate, and the sliding supporting plate is obliquely arranged in the insulation can, the inner wall of the steel pipe is dried and then coated, so that the service life of the steel pipe can be greatly prolonged.

Description

Steel pipe preheating device before powder spraying

Technical Field

The utility model relates to steel pipe processing equipment, in particular to a preheating device for steel pipes before powder spraying.

Background

When the steel pipe meets production and pauses or wet and cold weather, the steel pipe inner wall can produce a large amount of moisture, and need preheat earlier the steel pipe before the steel pipe spraying and get rid of intraductal moisture, adopt the air heater to carry out the drying in the tradition, lead to intraductal moisture to remove or intraductal humidity inconsistent, whether operating personnel need to cut off the wind in the manual drilling pipe to the moisture in the steel pipe clear away totally detect, it is troublesome again to waste time, intraductal moisture removes the intraductal spraying face of not time spent fracture very likely to appear or paste insecurely, influence the life of whole steel pipe.

Disclosure of Invention

The utility model provides a preheating device before powder spraying for a steel pipe.

The technical scheme adopted by the utility model is as follows:

a pre-heating device before powder spraying for a steel pipe comprises an insulation can, an upper heating plate, a lower heating plate, a sliding supporting plate and a return air system, wherein the upper parts of the left side and the right side of the insulation can are respectively provided with a pipe outlet and a pipe inlet, the pipe inlet of the insulation can is rotationally connected with an inlet door through a rotating shaft, the pipe outlet of the insulation can is rotationally connected with an outlet door through a rotating shaft, the inner walls of the inlet door and the outlet door are provided with side heat-insulating plates, the top and the bottom of the insulation can are respectively provided with an upper heat-insulating plate and a lower heat-insulating plate, the side heat-insulating plates are arranged on the side wall of the insulation can, the upper heating plate is arranged below the upper heat-insulating plate, the lower heating plate is arranged above the lower heat-insulating plate, the sliding supporting plate is obliquely arranged in the insulation can, one end of the sliding supporting plate close to the pipe outlet is downward inclined, the middle of the bottom of the insulation can is communicated with an air outlet pipe, the air pump is connected with the air outlet, the bottom of outlet duct is connected with front side siphunculus and rear side siphunculus respectively to front and back both sides, be connected with first solenoid valve on the front side siphunculus, be connected with the second solenoid valve on the rear side siphunculus, front side siphunculus and rear side siphunculus are connected with the many lateral ducts that upwards extend through controlling the side siphunculus, the top of lateral duct stretches into in the incubator, the lateral pipe end of front side has preceding jet-propelled dish in the incubator in-connection, the lateral pipe end of rear side has the back jet-propelled dish in the incubator in-connection, preceding jet-propelled dish sets up the both sides at the slip layer board with the back jet-propelled dish.

And a convex edge is arranged at the top of the edge of one side of the sliding supporting plate close to the rear side wall of the heat insulation box.

The sliding support plate is uniformly provided with air holes.

The front air injection disc and the rear air injection disc are square discs.

The bottom edges of the front air injection disc and the rear air injection disc are parallel to the sliding supporting plate.

The angle that the slip layer board left and right sides and front and back slope be 1 ~ 3.

The utility model has the beneficial effects that: the utility model leads out the gas in the middle of the heat preservation box and then flows back to the two sides of the heat preservation box, so that the gas in the heat preservation box can circulate, the air injection disc is aligned with the steel pipe for injecting air, so that the water in the steel pipe is brought out and evaporated along with the flowing of the air flow, the inner wall of the steel pipe is dried, and then the inner wall of the steel pipe is coated, thereby greatly prolonging the service life of the steel pipe.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a left side view of the present invention.

Fig. 3 is a schematic structural view of the sliding pallet of the present invention.

Wherein: 1-insulation box; 2, mounting an insulation board; 3-upper heating plate; 4-a steel pipe; 5-sliding a supporting plate; 6-front air jet disc; 7-front side through pipe; 8-air outlet pipe; 9-an air pump; 10-lower insulation board; 11-lower heating plate; 12-rear side through pipe; 13-a branch pipe; 14-air holes; 15-convex edge; 16-a rotating shaft; 17-an entrance door; 18-a second solenoid valve; 19-a first solenoid valve; 20-an exit door; 21-side insulation board; 22-left and right side through pipes; 23-rear jet disk.

Detailed Description

A preheating device before powder spraying of a steel pipe comprises an insulation can 1, an upper heating plate 3, a lower heating plate 11, a sliding support plate 5 and an air return system, wherein the upper parts of the left side and the right side of the insulation can 1 are respectively provided with an outlet pipe opening and an inlet pipe opening, the inlet pipe opening of the insulation can 1 is rotatably connected with an inlet door 17 through a rotating shaft 16, the outlet pipe opening of the insulation can 1 is rotatably connected with an outlet door 20 through the rotating shaft 16, the inner walls of the inlet door 17 and the outlet door 20 are provided with side insulation plates 21, the top and the bottom of the insulation can 1 are respectively provided with an upper insulation plate 2 and a lower insulation plate 10, the side insulation plates 21 are arranged on the side wall of the insulation can 1, the upper heating plate 3 is arranged below the upper insulation plate 2, the lower heating plate 11 is arranged above the lower insulation plate 10, the sliding support plate 5 is obliquely arranged in the insulation can 1, one end, close to the outlet pipe opening, the sliding support plate 5 is obliquely inclined at one end, close to the rear side wall of the insulation can 1, the intercommunication has outlet duct 8 in the middle of insulation can 1's the bottom, be connected with air pump 9 on the outlet duct 8, front side siphunculus 7 and rear side siphunculus 12 are connected with respectively to both sides around the bottom of outlet duct 8, be connected with first solenoid valve 19 on the front side siphunculus 7, be connected with second solenoid valve 18 on the rear side siphunculus 12, front side siphunculus 7 and rear side siphunculus 12 are connected with the many lateral tubes 13 that upwards extend through controlling side siphunculus 22, the top of lateral tube 13 stretches into insulation can 1, the lateral tube 13 end of front side has preceding jet-propelled dish 6 in insulation can 1 in-connection, the lateral tube 13 end of rear side has back jet-propelled dish 23 in insulation can 1 in-connection, preceding jet-propelled dish 6 and back jet-propelled dish 23 set up the both sides at slip layer board 5.

The top of the edge of one side of the sliding supporting plate 5, which is close to the rear side wall of the heat insulation box 1, is provided with a convex edge 15, the convex edge 15 can block the rear end of the steel pipe 4, the end head of the steel pipe 4 is prevented from wearing the rear side wall of the heat insulation box 1 or the right air injection disc 23, and the service life of the heat insulation box 1 is prolonged.

The sliding supporting plate 5 is uniformly provided with air holes 14, so that the air at the upper part and the lower part of the sliding supporting plate 5 in the heat insulation box 1 is communicated, the temperature in the heat insulation box 1 is ensured to be uniform, the temperature of each part of the steel pipe 4 is consistent as far as possible, and synchronous drying is achieved.

The front air injection plate 6 and the rear air injection plate 23 are square plates. The bottom edges of the front air injection disc 6 and the rear air injection disc 23 are parallel to the sliding support plate 5, the steel pipe 4 is placed on the sliding support plate 5, and the front air injection disc 6 and the rear air injection disc 23 respectively inject air towards the two ends of the steel pipe 4 to drive off moisture in the steel pipe 4.

The angle of slope about 5 right and left sides of sliding support plate be 1 ~ 3, the slope can make steel pipe 4 roll to move ahead about sliding support plate 5, the slope makes the hot-blast wall that spouts in steel pipe 4 advance to the adherence that inclines around 5, improves the drying rate of 4 inner walls of steel pipe.

When the air-conditioning system is applied, the steel pipe 4 enters the insulation can 1 from the pipe inlet, then the inlet door 17 is covered, the temperature in the insulation can 1 is guaranteed by the upper insulation board 2, the lower insulation board 10 and the side insulation board 21, the rear end of the steel pipe 4 is abutted against the convex edge 15, the steel pipe 4 rolls to the left end of the sliding support board 5 from the right end of the sliding support board 5, the air pump 9 is started in the rolling process, air in the middle of the insulation can 1 is guided to return to two sides of the insulation can 1, the air on-off of the front side through pipe 7 and the rear side through pipe 12 is controlled by controlling the opening and closing of the first electromagnetic valve 19 and the second electromagnetic valve 18 on the front side through pipe 7 and the rear side through pipe 12, the front air injection disc 6 and the rear air injection disc 23 remove moisture in the steel pipe 4 in turn, the steel pipe 4 rolls to the pipe outlet, and the steel pipe 4 rolls out of the insulation can 1 after the outlet door 20 is opened.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (6)

1. A pre-heating device before steel pipe powder spraying is characterized by comprising an insulation can (1), an upper heating plate (3), a lower heating plate (11), a sliding supporting plate (5) and an air return system, wherein the upper portion of the left side and the right side of the insulation can (1) are respectively provided with a pipe outlet and a pipe inlet, the pipe inlet of the insulation can (1) is rotatably connected with an inlet door (17) through a rotating shaft (16), the pipe outlet of the insulation can (1) is rotatably connected with an outlet door (20) through the rotating shaft (16), the inner walls of the inlet door (17) and the outlet door (20) are provided with side heating plates (21), the top and the bottom of the insulation can (1) are respectively provided with an upper insulation plate (2) and a lower insulation plate (10), the side insulation plates (21) are arranged on the side wall of the insulation can (1), the upper heating plate (3) is arranged below the upper insulation plate (2), the lower heating plate (11) is arranged above the lower insulation plate (10), the sliding support plate (5) is obliquely arranged in the heat preservation box (1), one end of the sliding support plate (5) close to the pipe outlet is downward inclined, one end of the sliding support plate (5) close to the rear side wall of the heat preservation box (1) is downward inclined, an air outlet pipe (8) is communicated with the middle of the bottom of the heat preservation box (1), an air pump (9) is connected onto the air outlet pipe (8), the bottom end of the air outlet pipe (8) is respectively connected with a front side through pipe (7) and a rear side through pipe (12) towards the front side and the rear side, a first electromagnetic valve (19) is connected onto the front side through pipe (7), a second electromagnetic valve (18) is connected onto the rear side through pipe (12), the front side through pipe (7) and the rear side through pipe (22) are connected with a plurality of branch pipes (13) which extend upwards, the top ends of the branch pipes (13) extend into the heat preservation box (1), and the end of the branch pipes (13) at the front side are connected with a front air injection disc (6) in the heat preservation box (1), the end of the branch pipe (13) at the rear side is connected with a rear air injection disc (23) in the heat preservation box (1), and the front air injection disc (6) and the rear air injection disc (23) are arranged at two sides of the sliding supporting plate (5).

2. The steel pipe powder spraying preheating device according to claim 1, wherein a convex edge (15) is arranged at the top of one side edge of the sliding supporting plate (5) close to the rear side wall of the heat preservation box (1).

3. The steel pipe preheating device before powder spraying of claim 1, wherein the sliding support plate (5) is uniformly provided with air holes (14).

4. The steel pipe powder spraying preheating device according to claim 1, wherein the front gas injection plate (6) and the rear gas injection plate (23) are square plates.

5. The steel pipe powder spraying preheating device according to claim 4, wherein the bottom edges of the front gas injection plate (6) and the rear gas injection plate (23) are parallel to the sliding support plate (5).

6. The steel pipe powder spraying preheating device according to claim 5, wherein the angle of inclination of the sliding support plate (5) from left to right and from front to back is 1-3 °.

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