CN112410708A - Internal blowing device for galvanized steel pipe - Google Patents
Internal blowing device for galvanized steel pipe Download PDFInfo
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- CN112410708A CN112410708A CN201910771156.2A CN201910771156A CN112410708A CN 112410708 A CN112410708 A CN 112410708A CN 201910771156 A CN201910771156 A CN 201910771156A CN 112410708 A CN112410708 A CN 112410708A
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- cylinder
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- steel pipe
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/185—Tubes; Wires
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/38—Wires; Tubes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a galvanized steel pipe internal blowing device, which belongs to the field of galvanized internal blowing, and comprises a support, wherein an internal blowing cylinder is arranged on the support, a steam pipe is communicated on the side wall of the internal blowing cylinder, an internal blowing rod capable of axially sliding relative to the internal blowing cylinder is arranged inside the internal blowing cylinder, a hollow structure is arranged inside the internal blowing rod, a plurality of connecting holes are uniformly distributed on the side wall of the internal blowing rod and communicated with the internal blowing cylinder, a linear driving device is arranged at one end of the internal blowing rod, and a horn mouth is arranged at the other end of the internal blowing rod and communicated with the inside of the internal blowing rod; the inner wall of the inner blowing cylinder is of a conical structure, and the lowest end of the inner wall is provided with a condensed water outlet; the piston device is arranged inside the internal blowing rod, the piston device can compress internal blowing rod internal gas to be discharged to the horn mouth, the piston device comprises a piston and a cylinder, the cylinder is fixed at one end inside the internal blowing rod, and the cylinder drives the piston to move.
Description
Technical Field
The invention relates to the field of galvanized internal blowing, in particular to an internal blowing device for a galvanized steel pipe.
Background
After present hot dip galvanized steel pipe came out from the zinc liquid pond, need through outer blowing and interior two processes of blowing to guarantee steel pipe zinc layer thickness, to thicker pipe, it blows in adopting the mode that stretches into interior blowing nozzle to blow in, the steel pipe inner wall thickness that blows out often is more even, but to the steel pipe below the thinner pipe especially 4 cun, because in the blowing nozzle too big can not stretch into the steel pipe, just can only adopt the mode that sets up the horn mouth and blow in one end, through controlling interior blowing pressure, the difference of pipe fitting both ends zinc layer thickness has basically been guaranteed and has reached national standard.
But because the horn mouth is V type structure, in order to guarantee that the steel pipe is automatic to the center location when horn mouth and steel pipe contact, the steel pipe contacts with the V type inner wall of horn mouth, and the mouth of blowing on the horn mouth often is little than the internal diameter of steel pipe (still considers the structural strength of horn mouth comprehensively), this time just leads to blowing, steel pipe tip one end distance can't blow the structure that takes place reverse blowing even because of the air current influence, the zinc layer thickness that leads to this tip of steel pipe is not up to standard, in order to solve above-mentioned problem, the structure to the horn mouth has been improved many times, all do not reach qualified standard, consequently, often need the workman to polish in addition afterwards and spout zinc powder.
In view of the problems in the prior art, the galvanized steel pipe internal blowing device is designed and manufactured by combining years of design and use experience of related fields and assisting with over-strong professional knowledge, so that the defects are overcome.
Disclosure of Invention
Aiming at the problems in the prior art, the galvanized steel pipe internal blowing device provided by the invention can ensure that internal blowing reaches the standard once and simultaneously solves the problem of internal blowing condensed water.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: an inner blowing device for galvanized steel pipes comprises a support, wherein an inner blowing barrel is arranged on the support, a steam pipe is communicated on the side wall of the inner blowing barrel, an inner blowing rod capable of axially sliding relative to the inner blowing barrel is arranged in the inner blowing barrel, a hollow structure is arranged in the inner blowing rod, a plurality of connecting holes are uniformly distributed in the side wall of the inner blowing rod and communicated with the inner blowing barrel, a linear driving device is arranged at one end of the inner blowing rod, and a horn mouth is formed in the other end of the inner blowing rod and communicated with the interior of the inner blowing rod;
the inner wall of the inner blowing cylinder is of a conical structure, and the lowest end of the inner wall is provided with a condensed water outlet;
the piston device is arranged inside the internal blowing rod, the piston device can compress internal blowing rod internal gas to be discharged to the horn mouth, the piston device comprises a piston and a cylinder, the cylinder is fixed at one end inside the internal blowing rod, and the cylinder drives the piston to move.
According to the preferable technical scheme, two ends of the inner blowing cylinder are respectively provided with a reinforcing supporting block, the reinforcing supporting block provided with the linear driving device end is connected with a guide block, the inner blowing rod slides along the guide block in a guiding mode, and the tail end of the guide block and the end portion, provided with the horn mouth end, of the inner blowing cylinder are respectively provided with a sealing gland.
As an optimal technical scheme, the end part of the inner blowing rod connected with the linear driving device is provided with a connecting block, the air cylinder is fixed on the connecting block, the connecting block is connected with a driving device connector, a bolt connection is arranged between the connecting block and the driving device connector, and the linear driving device is connected with the driving device connector.
As an optimal technical scheme, the air cylinder is a single-acting air cylinder, a self-recovery device is arranged inside the air cylinder, and an air path is arranged on the connecting block and communicated with the air cylinder to provide an air source for the air cylinder.
As a preferable technical scheme, a plurality of connecting holes are arranged in front of the initial position of the cylinder.
As a preferred technical scheme, the condensed water outlet is connected with a water outlet pipeline, and a water outlet valve is arranged in the water outlet pipeline.
The invention has the advantages that:
(1) when the steam internal blowing of the steel pipe is stopped, the piston is pushed by the cylinder in the internal blowing rod in combination with the retreating of the internal blowing rod, so that steam remained in the internal blowing rod blows the end part of the steel pipe, and the blown air flow can blow the position which cannot be blown by the original end part of the steel pipe again because the steel pipe is away from one end of the bell mouth, so that the thicker position of the zinc layer at the original end part is blown to be thin, and the thickness of the zinc layer is ensured because the zinc liquid at the end part is supplemented at the inner wall of the steel pipe at the position with the maximum original air flow strength, and the post-treatment is not needed.
(2) The steam enters the inner blowing rod from the inner blowing cylinder through the connecting hole to be blown out, so that the damage of excessive water on the inner wall of the steel pipe caused by excessive condensed water due to the fact that the steam directly passes through the inner blowing cylinder in the conventional structure is avoided, and the quality of the product is guaranteed.
(3) The invention basically remains condensed water in the inner blowing cylinder, so a structure that the inner wall of the inner blowing cylinder is convenient for the condensed water to flow out is considered, the heat preservation effect is considered, the condensed water outlet is smaller, the condensed water is often discharged out of time when the amount of the condensed water is more in winter, and the heat preservation effect is influenced when the opening of the condensed water outlet is larger.
(4) The connecting hole is arranged in front of the initial position of the cylinder, the effect of accelerating the discharge of condensed water can be achieved, meanwhile, the pressure of gas blown out of the bell mouth can be improved, as the cylinder moves forwards, the piston exceeds the position of the connecting hole, the gas in the internal blowing rod is completely discharged from the bell mouth, and when the cylinder returns to the initial position, the pressure in the space behind the piston is increased, namely the pressure in the internal blowing cylinder communicated through the connecting hole is increased, and the drainage pressure of the condensed water outlet is increased to accelerate the drainage.
(5) The steam pipe is arranged on the inner blowing cylinder, and the inner blowing rod moves relative to the inner blowing cylinder, so that the problem of damage to the steam pipe caused by the fact that the inner blowing cylinder moves back and forth due to the fact that the traditional structure blows air directly through the inner blowing cylinder is solved, and the steam pipe moves along with the inner blowing cylinder, and the steam pipe is mostly made of pipe fittings which are high in strength and not flexible, so that production is frequently influenced by replacement. The structure does not influence the discharge of steam, ensures the fixation of the position of the steam pipe and prolongs the service life of the steam pipe.
Drawings
FIG. 1 is a schematic structural diagram of a galvanized steel pipe internal blowing device.
In the figure: the device comprises a support 1, a linear driving device 2, a driving device 3, a connector 4, a connecting block 5, a bolt 6, a sealing gland 7, a guide block 8, an internal blowing rod 9, a cylinder 10, a reinforcing support block 11, an air passage 11, a steam pipe 12, an internal blowing cylinder 13, a piston 14, a connecting hole 15, a condensate water outlet 16, a water outlet valve 17, a water outlet pipeline 18, a bell mouth 19, a steel pipe 20, a strong wind flow point 21 and a weak wind flow point 22.
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
As shown in figure 1, the galvanized steel pipe internal blowing device comprises a bracket 1, wherein the bracket 1 is generally arranged at the advancing end part of a steel pipe 20, an internal blowing cylinder 13 is arranged on the bracket 1, a steam pipe 12 is communicated with the side wall of the internal blowing cylinder 13, and the steel pipe 20 is internally blown directly through the internal blowing cylinder 13 due to the traditional internal blowing mode, but two problems are found in the process of use: firstly, the steam pipe 12 moves along with the inner blowing cylinder 13 because the inner blowing cylinder 13 needs to move back and forth, and the steam pipe 12 is frequently damaged and replaced because the steam pipe 12 mostly adopts a pipe with high strength and poor flexibility; secondly, the original traditional structure directly blows out through the inner blowing cylinder 13, so that the condensate water is too much, the inner wall of the steel pipe 20 is damaged by the blown-out excessive water, and the product quality cannot be ensured. Therefore, the inner blowing rod 8 capable of axially sliding relative to the inner blowing cylinder 13 is arranged in the inner blowing cylinder 13, the inner portion of the inner blowing rod 8 is of a hollow structure, a plurality of connecting holes 15 are uniformly distributed on the side wall of the inner blowing rod 8 and communicated with the inner blowing cylinder 13, a linear driving device 2 is arranged at one end of the inner blowing rod 8, and a bell mouth 19 is arranged at the other end of the inner blowing rod 8 and communicated with the inner portion of the inner blowing rod 8 so as to internally blow the steel pipe 20;
the inner wall of the inner blowing cylinder 13 is designed to be a conical structure, and considering that the inner wall of the inner blowing cylinder 13 is convenient for condensed water to flow out, the lowest end of the inner wall is provided with a condensed water outlet 16, the condensed water outlet 16 is connected with a water outlet pipeline 18, and a water outlet valve 17 is arranged in the water outlet pipeline 18, so that the opening of the water outlet valve 17 can be reasonably controlled according to the inner blowing rhythm, and the temperature control is ensured.
The invention is characterized in that a piston 14 device is arranged in an inner blowing rod 8, the piston 14 device can compress the gas in the inner blowing rod 8 and discharge the gas to a bell mouth 19, the piston 14 device comprises a piston 14 and a cylinder 9, the cylinder 9 is fixed at one end in the inner blowing rod 8, the cylinder 9 drives the piston 14 to move, the design purpose of the structure is that when the steel pipe 20 is blown in, the zinc layer on the inner wall of the steel pipe 20 is influenced (becomes very thin) by blowing air from the bell mouth 19 at a strong air flow point 21, while the zinc layer on a weak air flow point 22 is not blown by the air flow, but is thicker due to the reaction of the air flow, thereby influencing the product quality and the subsequent processes, the structure designed at present is adopted, when the steam inner blowing of the steel pipe 20 is stopped, the piston 14 is pushed by the cylinder 9 in the inner blowing rod 8, so that the residual steam in the inner blowing rod 8 blows the end of the steel pipe 20, because the steel pipe 20 is away from one end of the bell mouth 19, the blown air flow can re-blow the position where the end part of the original steel pipe 20 can not be blown, so that the thicker position of the zinc layer at the original end part is blown to be thin, and the inner wall of the steel pipe 20 at the position with the maximum intensity of the original air flow is supplemented by the zinc liquid at the end part, so that the thickness of the zinc layer is ensured, and the post-processing is not needed; the structure can further promote the discharge of the condensed water, and the heat preservation effect is considered that the condensed water outlet 16 is smaller, the condensed water is often discharged out of time when the amount of the condensed water is more in winter, and the heat preservation effect is influenced when the opening of the condensed water outlet 16 is larger.
The connecting holes 15 are arranged in front of the initial position of the cylinder 9, the structure can also accelerate the drainage of condensed water, and simultaneously can improve the pressure of the gas blown out from the bell mouth 19, because the cylinder 9 moves forwards, the piston 14 exceeds the position of the connecting hole 15, the gas in the internal blowing rod 8 is completely discharged from the bell mouth 19, and when the cylinder 9 returns to the initial position, the pressure in the space behind the piston 14 is increased, namely the pressure in the internal blowing cylinder 13 communicated through the connecting hole 15 is also increased, and the drainage pressure of the condensed water outlet 16 is increased to accelerate drainage.
According to the invention, the two ends of the internal blowing cylinder 13 are respectively provided with the reinforcing support blocks 10, the reinforcing support blocks 10 at the ends provided with the linear driving devices 2 are connected with the guide blocks 7, the internal blowing rod 8 slides along the guide blocks 7 in a guiding manner, and the tail ends of the guide blocks 7 and the end part of the internal blowing cylinder 13 at the end provided with the bell mouth 19 are respectively provided with the sealing gland 6, so that the sealing and heat preservation effects are ensured.
The end part of an internal blowing rod 8 connected with a linear driving device 2 is provided with a connecting block 4, an air cylinder 9 is fixed on the connecting block 4, the connecting block 4 is connected with a driving device connector 3, a bolt 5 is arranged between the connecting block 4 and the driving device connector 3 for connection, and the linear driving device 2 is connected with the driving device connector 3.
According to the invention, the cylinder 9 is preferably set as a single-acting cylinder 9, the self-recovery device is arranged in the cylinder 9, and the air passage 11 arranged on the connecting block 4 is communicated with the cylinder 9 to provide an air source for the cylinder 9.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should also be understood that various alterations, modifications and/or variations can be made to the present invention by those skilled in the art after reading the technical content of the present invention, and all such equivalents fall within the protective scope defined by the claims of the present application.
Claims (6)
1. The utility model provides a device blows in galvanized steel pipe which characterized in that: the device comprises a support, wherein an inner blowing barrel is arranged on the support, a steam pipe is communicated on the side wall of the inner blowing barrel, an inner blowing rod capable of axially sliding relative to the inner blowing barrel is arranged in the inner blowing barrel, a hollow structure is arranged in the inner blowing rod, a plurality of connecting holes are uniformly distributed on the side wall of the inner blowing rod and communicated with the inner blowing barrel, a linear driving device is arranged at one end of the inner blowing rod, and a horn mouth is arranged at the other end of the inner blowing rod and communicated with the interior of the inner blowing rod;
the inner wall of the inner blowing cylinder is of a conical structure, and the lowest end of the inner wall is provided with a condensed water outlet;
the piston device is arranged inside the internal blowing rod, the piston device can compress internal blowing rod internal gas to be discharged to the horn mouth, the piston device comprises a piston and a cylinder, the cylinder is fixed at one end inside the internal blowing rod, and the cylinder drives the piston to move.
2. The galvanized steel pipe internal blowing device according to claim 1, characterized in that: the two ends of the inner blowing cylinder are respectively provided with a reinforcing supporting block, the reinforcing supporting block provided with the linear driving device end is connected with a guide block, the inner blowing rod slides along the guide block in a guiding manner, and the tail end of the guide block and the end part of the inner blowing cylinder provided with the horn mouth end are respectively provided with a sealing gland.
3. The galvanized steel pipe internal blowing device according to claim 1, characterized in that: the end part of the inner blowing rod connected with the linear driving device is provided with a connecting block, the air cylinder is fixed on the connecting block, the connecting block is connected with a driving device connector, a bolt connection is arranged between the connecting block and the driving device connector, and the linear driving device is connected with the driving device connector.
4. The galvanized steel pipe internal blowing device according to claim 1, characterized in that: the cylinder is set to be a single-acting cylinder, a self-recovery device is arranged inside the cylinder, and the connecting block is provided with a gas path communicated with the cylinder to provide a gas source for the cylinder.
5. The galvanized steel pipe internal blowing device according to claim 1, characterized in that: and the connecting holes are arranged in front of the initial position of the cylinder.
6. The galvanized steel pipe internal blowing device according to claim 1, characterized in that: the condensed water outlet is connected with a water outlet pipeline, and a water outlet valve is arranged in the water outlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910771156.2A CN112410708A (en) | 2019-08-21 | 2019-08-21 | Internal blowing device for galvanized steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910771156.2A CN112410708A (en) | 2019-08-21 | 2019-08-21 | Internal blowing device for galvanized steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112410708A true CN112410708A (en) | 2021-02-26 |
Family
ID=74779399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910771156.2A Pending CN112410708A (en) | 2019-08-21 | 2019-08-21 | Internal blowing device for galvanized steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112410708A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0665451U (en) * | 1993-02-17 | 1994-09-16 | 株式会社ノリタケカンパニーリミテド | Steam blower for kiln with drawing |
| CN2541469Y (en) * | 2002-05-13 | 2003-03-26 | 李广辉 | Blowpipe internal blower |
| CN204311123U (en) * | 2014-12-18 | 2015-05-06 | 浙江金洲管道科技股份有限公司 | For the internal blowing device that the zinc-plated raffinate of steel pipe is removed |
| CN206706182U (en) * | 2017-03-29 | 2017-12-05 | 天津源泰德润钢管制造集团有限公司 | Residual liquid processing apparatus in a kind of zinc-plated rear steel pipe |
-
2019
- 2019-08-21 CN CN201910771156.2A patent/CN112410708A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0665451U (en) * | 1993-02-17 | 1994-09-16 | 株式会社ノリタケカンパニーリミテド | Steam blower for kiln with drawing |
| CN2541469Y (en) * | 2002-05-13 | 2003-03-26 | 李广辉 | Blowpipe internal blower |
| CN204311123U (en) * | 2014-12-18 | 2015-05-06 | 浙江金洲管道科技股份有限公司 | For the internal blowing device that the zinc-plated raffinate of steel pipe is removed |
| CN206706182U (en) * | 2017-03-29 | 2017-12-05 | 天津源泰德润钢管制造集团有限公司 | Residual liquid processing apparatus in a kind of zinc-plated rear steel pipe |
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Application publication date: 20210226 |
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