CN220408390U - Sand blasting equipment for inner wall and socket wall of socket of nodular cast iron pipe - Google Patents

Abstract

The utility model discloses sand blasting equipment for the inner wall of a socket and the wall of a spigot of a nodular cast iron pipe, and belongs to the technical field of sand blasting equipment for nodular cast iron pipes. The utility model comprises a spray gun, wherein one end of the spray gun is provided with an air inlet pipe, the upper end of the spray gun is provided with a sand inlet pipe, the air inlet pipe and the spray gun are of an integrated structure, and the other end of the spray gun is provided with a nozzle sleeve. The utility model solves the problems that the prior sand blasting technology ejects out of a handheld spray gun through compressed air mixed spray material, and sprays high-speed sand flow to the surface of a workpiece, and because the spray gun is straight-through, after the sprayed sand flow contacts and impacts the surface of a casting, the spray gun is not controlled to sputter around, and the collision sand flow damages the cement lining coating of the casting pipe to cause sinking.

Description

Sand blasting equipment for inner wall and socket wall of socket of nodular cast iron pipe

Technical Field

The utility model relates to the technical field of spheroidal graphite cast iron pipe sand blasting equipment, in particular to spheroidal graphite cast iron pipe socket inner wall and socket wall sand blasting equipment.

Background

The sand blasting is a process of impacting the surface of a casting body by using high-speed sand flow, cleaning and roughening the surface of a matrix, and is generally carried out by adopting compressed air as power so as to form a high-speed spray beam to spray the sprayed material onto the surface of a workpiece to be treated at a high speed. After the cast pipe fitting is cast and molded by the sand mold, the surface of the workpiece is inevitably provided with defects such as air holes, sand expansion and the like, so that great difficulty is brought to the subsequent anticorrosive coating work, and the inner wall of the socket of the nodular cast iron pipe and the socket wall are required to be subjected to sand blasting treatment on the surface in order to improve the spraying effect.

After the metal is finished, an anti-corrosion coating is added to isolate the metal from air, so that the related oxidation reaction is stopped. The ball-milling spheroidal graphite cast iron pipe is coated with an anti-corrosion coating on the inner and outer sides, so that the service life of the ball-milling spheroidal graphite cast iron pipe can be prolonged, and the application range of the ball-milling spheroidal graphite cast iron pipe can be enlarged. After casting, the inner wall of the bell mouth and the wall of the spigot need to be polished or treated with fine sand blasting to obtain a surface with high adhesion. However, in the prior art, compressed air mixed spraying materials are sprayed out of a handheld spray gun to spray high-speed sand flow to the surface of a workpiece, and as the spray gun is straight-through, after the sprayed sand flow is contacted and impacted with the surface of a casting, the sprayed sand flow is not controlled to be sputtered everywhere, and the sprayed sand flow is impacted to damage the cement lining coating of the casting pipe to cause sinking.

Disclosure of Invention

The utility model aims to provide a nodular cast iron pipe bell inner wall and socket wall sand blasting device, which is characterized in that a drainage structure, namely a trapezoid inner flow pipe and a nozzle cover, are additionally arranged at the front end of a nozzle on an existing straight-through spray gun, so that a high-speed sand blasting flow is limited on the surface of a workpiece to be treated of a bell and socket, the splashing sand flow is prevented from damaging a coating, and meanwhile, the colliding sand flow can soften the force of primary collision, the surface of a casting is protected, and the problem in the prior art is solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a nodular cast iron pipe bellmouth inner wall and socket wall sand blasting equipment, includes the spray gun, the one end of spray gun is provided with the intake pipe, the upper end of spray gun is provided with into the sand pipe, advance sand pipe, intake pipe and spray gun and be integrated into one piece structure, the other end of spray gun is provided with the mouth cover, the mouth cover passes through sealing washer and spray gun sealing connection, the internally mounted of mouth cover has the nozzle housing, the inside of intake pipe is fixedly provided with the trachea, tracheal one end is connecting port, and connecting port is located the outside of intake pipe.

Preferably, one end of the nozzle cover is provided with a trapezoid inner flow pipe, the trapezoid inner flow pipe and the nozzle cover are of an integrated structure, and the trapezoid inner flow pipe is connected with the nozzle sleeve in a plug-in mode.

Preferably, the inner wall of the mouth sleeve is provided with a step.

Preferably, a guide sleeve is fixedly arranged in the spray gun, and a guide channel is arranged on one side of the guide sleeve.

Preferably, a filter screen is arranged in the guide channel.

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

1. according to the sand blasting equipment for the inner wall and the socket wall of the socket of the nodular cast iron pipe, a drainage structure, namely the trapezoid inner flow pipe and the nozzle cover, is additionally arranged at the front end of the nozzle on the existing straight-through spray gun, the high-speed sand blasting flow is limited on the surface of a workpiece to be treated in the socket, so that the splashing sand flow is prevented from damaging a coating, meanwhile, the colliding sand flow can soften the collision force once to protect the surface of the casting, the trapezoid inner flow pipe is arranged, the high-pressure sand blasting flow flows out of the nozzle in an amplified shape, the nozzle cover with the corresponding size is additionally arranged, the sand blasting can be completely limited in the cover-shaped range, the nozzle cover can be limited on the surface of a casting to be treated by treating the inner wall of the socket of the casting pipe, the sand blasting effect can be optimized, meanwhile, the sand blasting direction can be controlled, the inner cement coating can be prevented from being blocked and peeled off due to the fact that the lining cement coating is damaged by impact, and the trapezoid inner flow pipe and the nozzle cover are easy to install.

2. According to the sand blasting equipment for the inner wall of the bell mouth and the socket wall of the nodular cast iron pipe, provided by the utility model, the compressed air mixed spraying material plays a role in guiding through the arrangement of the guide sleeve and the guide channel, the filter screen can filter sand flow, so that impurities sprayed to the surface of a casting by the sand blasting are greatly reduced, the inner wall of the nozzle sleeve is provided with the step, and the step plays a limiting role on the plug connection of the trapezoid inner flow pipe.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a schematic view of a bevel nozzle cover according to the present utility model.

In the figure: 1. a spray gun; 2. a sand inlet pipe; 3. an air inlet pipe; 4. a mouth sleeve; 5. a nozzle cover; 6. a seal ring; 7. a trapezoidal inner flow tube; 8. a guide sleeve; 9. a guide channel; 10. a filter screen; 11. a step; 301. a connection port; 302. and an air pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order to solve the technical problems that in the prior art of sand blasting, compressed air is mixed to spray a spray material from a handheld spray gun, high-speed sand flow is sprayed to the surface of a workpiece, and the spray gun is straight-through, after the sprayed sand flow is contacted and impacted with the surface of a casting, the sprayed sand flow is not controlled to be sputtered everywhere, and the impacted sand flow damages the cement lining coating of the casting pipe to cause sinking, referring to fig. 1-2, the embodiment provides the following technical scheme:

the utility model provides a nodular cast iron pipe bellmouth inner wall and socket wall sand blasting equipment, including spray gun 1, the one end of spray gun 1 is provided with intake pipe 3, the upper end of spray gun 1 is provided with into sand pipe 2, advance sand pipe 2, intake pipe 3 and spray gun 1 all as an organic whole structure, the other end of spray gun 1 is provided with mouth cover 4, mouth cover 4 passes through sealing washer 6 and spray gun 1 sealing connection, sealing washer 6 is used for the fixed of mouth cover 4 on the one hand, on the other hand has guaranteed good leakproofness, the internally mounted of mouth cover 4 has nozzle housing 5, the jet orifice area of nozzle housing 5 is big, make the sand blasting effect limit simultaneously again in the cover body scope completely, prevent that the quicksand from splashing, the inside of intake pipe 3 is fixed and is provided with trachea 302, the one end of trachea 302 is connecting port 301, and connecting port 301 is located the outside of intake pipe 3, connecting port 301 is convenient for install spray gun 1 on the sand blaster, the other end of trachea 302 is close to uide bushing 8, in order to the high-pressure injection of compressed air mixture spouts.

One end of the nozzle cover 5 is provided with a trapezoid inner flow pipe 7, the trapezoid inner flow pipe 7 and the nozzle cover 5 are in an integrated structure, the trapezoid inner flow pipe 7 is connected with the nozzle sleeve 4 in an inserting mode, a drainage structure is additionally arranged at the front end of the nozzle sleeve 4, namely, the trapezoid inner flow pipe 7 and the nozzle cover 5 limit high-speed sand blasting flow on the surface of a workpiece to be processed through a faucet, splashing sand flow is prevented from forming damage to a coating, meanwhile, the collided sand flow can be used for softening the force of primary collision, the surface of a casting is protected, the trapezoid inner flow pipe 7 is arranged, high-pressure sand blasting flow flows out of the nozzle in an amplified mode, and then the nozzle cover 5 with the corresponding size is additionally arranged, so that sand blasting can be completely limited in a cover shape range.

The inner wall of the mouth sleeve 4 is provided with a step 11, and the step 11 plays a limiting role in the plug connection of the trapezoid inner flow tube 7.

The inside of spray gun 1 is fixed and is provided with uide bushing 8, and one side of uide bushing 8 is provided with direction passageway 9, and the inside of direction passageway 9 is provided with filter screen 10, and uide bushing 8 and direction passageway 9 all play the effect of direction, and filter screen 10 can filter the sand flow, makes the sand spray spout to the impurity on foundry goods surface significantly reduce.

Referring to fig. 3, the nozzle cover 5 of the present utility model can design the nozzle cover 5 into an oblique angle nozzle cover 5 according to the actual sand flow direction, and the nozzle cover 5 can be limited on the casting surface to be treated by treating the inner wall of the casting pipe faucet, so that the sand blasting effect can be optimized, and meanwhile, the splash of the flowing sand can be prevented.

Working principle: when the spray nozzle is used, the trapezoid inner flow pipe 7 of the nozzle cover 5 is inserted into the nozzle sleeve 4, then the spray gun 1 is installed on the sand blasting machine through the connecting port 301, sand flows enter through the sand inlet pipe 2, external compressed air enters through the air pipe 302 in the air inlet pipe 3, so that compressed air mixed spray material is sprayed to the guide sleeve 8 at high pressure, the compressed air mixed spray material is sprayed out of the nozzle sleeve 4 through the guide channel 9, high-pressure sand jet flows out of the nozzle in an amplified shape through the trapezoid inner flow pipe 7, the nozzle cover 5 can limit the sand blasting in the range of a cover body, and the nozzle cover 5 can be limited on the surface of a casting mold to be processed when the inner wall of the bell and spigot of the nodular cast iron pipe is processed.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a nodular cast iron pipe bellmouth inner wall and socket wall sand blasting equipment, includes spray gun (1), its characterized in that: one end of spray gun (1) is provided with intake pipe (3), the upper end of spray gun (1) is provided with into sand pipe (2), advance sand pipe (2), intake pipe (3) and spray gun (1) all as an organic whole structure, the other end of spray gun (1) is provided with mouth cover (4), mouth cover (4) are through sealing washer (6) and spray gun (1) sealing connection, the internally mounted of mouth cover (4) has nozzle housing (5), the inside of intake pipe (3) is fixedly provided with trachea (302), the one end of trachea (302) is connecting port (301), and connecting port (301) are located the outside of intake pipe (3).

2. A box end and spigot wall blasting apparatus according to claim 1, wherein: one end of the nozzle cover (5) is provided with a trapezoid inner flow pipe (7), the trapezoid inner flow pipe (7) and the nozzle cover (5) are of an integrated structure, and the trapezoid inner flow pipe (7) is connected with the nozzle sleeve (4) in a plugging mode.

3. A box end and spigot wall blasting apparatus according to claim 1, wherein: the inner wall of the mouth sleeve (4) is provided with a step (11).

4. A box end and spigot wall blasting apparatus according to claim 1, wherein: the spray gun is characterized in that a guide sleeve (8) is fixedly arranged in the spray gun (1), and a guide channel (9) is arranged on one side of the guide sleeve (8).

5. A box end and spigot wall blasting apparatus according to claim 4, wherein: a filter screen (10) is arranged in the guide channel (9).