阅读说明：本技术 一种异型小口径管内壁的气动式机械除锈装置及工艺 (Pneumatic mechanical rust removal device and process for inner wall of special-shaped small-caliber pipe ) 是由 王发展 李哲 李汶轩 于 2019-09-09 设计创作，主要内容包括：本发明提供了一种异型小口径管内壁的气动式机械除锈装置及工艺,其特征在于,包括振动机构、旋转机构和安装机构；振动机构包括基座和顶座,基座中间安装有气动单元,旋转机构包括底盘和旋转盘,安装机构包括工作台,工作台上设置有用于安装异型小口径管的固定夹具；顶座和底盘之间通过连接柱固定相连。本发明通过气动电磁阀的频率可以自由调节,根据不同异型小口径管选择不同的频率,实现在多角度下振动。本发明通过调整伸缩柱的伸缩长度可以使工作台的角度发生变化。本发明通过旋转机构,可以在一定时间内实现旋转,使得整个工作台持续转动。(the invention provides a pneumatic mechanical rust removing device and a pneumatic mechanical rust removing process for the inner wall of a special-shaped small-caliber pipe, which are characterized by comprising a vibrating mechanism, a rotating mechanism and an installing mechanism; the vibrating mechanism comprises a base and a top seat, a pneumatic unit is arranged in the middle of the base, the rotating mechanism comprises a base plate and a rotating disc, the mounting mechanism comprises a workbench, and a fixing clamp for mounting the special-shaped small-caliber pipe is arranged on the workbench; the top seat and the bottom plate are fixedly connected through a connecting column. The invention can freely adjust the frequency through the pneumatic electromagnetic valve, and can realize vibration at multiple angles by selecting different frequencies according to different special-shaped small-caliber pipes. The angle of the workbench can be changed by adjusting the telescopic length of the telescopic column. The invention can realize rotation within a certain time through the rotating mechanism, so that the whole workbench can continuously rotate.)

1. A pneumatic mechanical rust removal device for the inner wall of a special-shaped small-caliber pipe is characterized by comprising a vibration mechanism (1), a rotating mechanism (2) and an installation mechanism (3);

The vibration mechanism (1) comprises a base (101) and a top seat (102), the bottom ends of a group of supporting columns (111) are fixedly installed at the position, close to the edge, of the base (101), the top end of each supporting column (111) is respectively provided with the bottom end of a protection spring (103), and the top ends of a group of protection springs (103) are installed on the bottom surface of the top seat (102);

The pneumatic unit is arranged in the middle of the base (101) and comprises an air source (104), the air source (104) is connected with an air bag (106) through a pressure reducing valve (105), the air bag (106) is connected with a pneumatic electromagnetic valve (107), the pneumatic electromagnetic valve (107) is connected with a high-frequency air cylinder (108), the high-frequency air cylinder (108) is connected with one end of a flexible joint (109), and the other end of the flexible joint (109) is connected with a rigid joint (110) fixedly connected to the bottom surface of the top base (102);

the rotating mechanism (2) comprises a chassis (201) and a rotating disc (202), the bottom end of a rotating shaft (203) is rotatably mounted at the center of the chassis (201), the top end of the rotating shaft (203) is fixedly connected to the center of the rotating disc (202), a group of supporting bearings (204) are mounted on the chassis (201) at positions close to the edges, and the supporting bearings (204) are in contact with the top surface of the rotating disc (202); the middle of the chassis (201) is also provided with a rotating unit (205), and the rotating unit (205) drives the rotating disc (202) to rotate;

the installation mechanism (3) comprises a workbench (301), and a fixing clamp (302) for installing the special-shaped small-caliber pipe (4) is arranged on the workbench (301);

The top seat (102) and the base plate (201) are fixedly connected through a connecting column (5), the rotating seat (202) is connected with the workbench (301) through a fixing column (6) and a telescopic column (7), the bottom end of the fixing column (6) is fixedly installed on the rotating seat (202), the top end of the fixing column (6) is hinged to the workbench (301), the bottom end of the telescopic column (7) is hinged to the rotating seat (202), and the top end of the telescopic column (7) is hinged to the workbench (301).

2. the pneumatic mechanical rust removing device for the inner wall of the special-shaped small-caliber pipe as claimed in claim 1, wherein the rotating unit (205) comprises a scroll spring (206), the outer end of the scroll spring (206) is connected to the base plate (201) through a fixing member (207), and the inner end of the scroll spring (206) is connected to the rotating shaft (203).

3. the pneumatic mechanical rust removing device for the inner wall of the special-shaped small-caliber pipe as claimed in claim 1, wherein a plurality of lightening holes (208) are formed on the rotating disc (202).

4. the pneumatic mechanical rust removing device for the inner wall of the special-shaped small-caliber pipe as claimed in claim 1, wherein the telescopic column (7) comprises an inner column (701) and an outer column (702), the inner column (701) is sleeved in the outer column (702), the inner column (701) and the outer column (702) are provided with a corresponding group of plug holes (703), and the inner column (701) and the outer column (702) are connected by inserting a pin shaft (704) into the plug holes (703).

5. The pneumatic mechanical rust removing device for the inner wall of the special-shaped small-caliber pipe as claimed in claim 1, wherein the flexible joint (109) is made of rubber.

6. A pneumatic mechanical rust removal process for the inner wall of the special-shaped small-caliber pipe is characterized in that the pneumatic mechanical rust removal device for the inner wall of the special-shaped small-caliber pipe is adopted in the process according to any one of claims 1 to 4.

7. the pneumatic mechanical derusting process for the inner wall of the special-shaped small-caliber pipe as claimed in claim 6, wherein the process comprises the following steps:

Filling abrasive in the special-shaped small-caliber pipe (4), sealing, fixing the special-shaped small-caliber pipe (4) on a fixed clamp (302), and adjusting the rotation speed of the rotating unit (205) and the frequency of the pneumatic solenoid valve (107);

Starting an air source (104), opening a pressure reducing valve (105), starting a pneumatic electromagnetic valve (107) to enable a pneumatic mechanical rust removing device on the inner wall of the special-shaped small-caliber pipe to be in a working state, and removing rust on the inner wall of the special-shaped small-caliber pipe (4) through an abrasive;

Step three, after working for a period of time, closing the pneumatic electromagnetic valve (107), stopping the pneumatic mechanical rust removing device on the inner wall of the special-shaped small-caliber pipe from working, adjusting the length of the telescopic column (7), inclining the workbench (301), and repeating the operation of the step two to continuously remove rust;

And step four, repeating the step two and the step three until no rust remains.

8. The pneumatic mechanical derusting process for the inner wall of the special-shaped small-caliber pipe as claimed in claim 7, wherein the frequency of the pneumatic electromagnetic valve (107) is 0-15 Hz, and the amplitude of the worktable (301) is 1-3 mm; the rotation rate of the rotating unit (205) is 2 min/circle.

9. the pneumatic mechanical derusting process for the inner wall of the special-shaped small-caliber pipe as claimed in claim 7, wherein the filling volume ratio of the abrasive to the inner cavity of the special-shaped small-caliber pipe (4) is 0.3-0.55: 1.

10. the pneumatic mechanical rust removing process for the inner wall of the special-shaped small-caliber pipe as claimed in claim 7, wherein the grain size of the abrasive is 3-8 mm; the grinding material is made of high-abrasion-resistance materials.

Technical Field

The invention belongs to the field of rust removal and polishing, relates to a special-shaped small-caliber pipe, and particularly relates to a pneumatic mechanical rust removal device and process for the inner wall of the special-shaped small-caliber pipe.

Background

With the development of the industrialization process, the development of the technical fields of the building industry, pipeline transportation and the like is rapidly advanced, and in the application fields, a large number of metal pipes with different shapes are involved and used.

In the subsequent maintenance of the metal pipe, rust removal is an important operation, as is well known, the rust removal of the outer surface of the metal pipe is simple, the inner part of the metal pipe is thin due to the small pipe diameter, and the inner structure of the special-shaped small-caliber pipe is tortuous, so that the rust removal is complex generally.

At present, the rust removal treatment of the inner wall of the pipeline comprises the following methods (1) chemical methods. Even if the interior of the metal pipe is cleaned by acid liquor or alkali liquor, the dosage of the rust remover is not easy to control in the mode, if the dosage is excessive, the exceeding part of the rust remover can cause great influence on the environment, the pickling waste liquor causes industrial equipment and environmental pollution, water resources are wasted, cost waste is caused, and if the dosage is insufficient, incomplete rust removal can be caused, and the poor rust removal effect is caused. (2) Physical methods. Namely, mechanical cleaning, the oxide layer and the rust are treated by utilizing the cutting force generated by driving a grinding wheel by a long metal shaft, the method is mainly suitable for the inner surface of a large-caliber pipeline, and the effect is not ideal for a slender rod piece and a special-shaped small-caliber pipe.

disclosure of Invention

aiming at the defects in the prior art, the invention aims to provide a pneumatic mechanical rust removal device and a pneumatic mechanical rust removal process for the inner wall of the special-shaped small-caliber pipe.

in order to solve the technical problems, the invention adopts the following technical scheme:

A pneumatic mechanical rust removal device for the inner wall of a special-shaped small-caliber pipe comprises a vibration mechanism, a rotating mechanism and an installation mechanism;

The vibration mechanism comprises a base and a top seat, the bottom ends of a group of support columns are fixedly installed at the position, close to the edge, of the base, the top end of each support column is respectively provided with the bottom end of a protection spring, and the top ends of a group of protection springs are installed on the bottom surface of the top seat;

The middle of the base is provided with a pneumatic unit, the pneumatic unit comprises an air source, the air source is connected with an air bag through a pressure reducing valve, the air bag is connected with a pneumatic electromagnetic valve, the pneumatic electromagnetic valve is connected with a high-frequency air cylinder, the high-frequency air cylinder is connected with one end of a flexible joint, and the other end of the flexible joint is connected with a rigid joint fixedly connected to the bottom surface of the top seat;

The rotating mechanism comprises a chassis and a rotating disk, the bottom end of a rotating shaft is rotatably arranged in the center of the chassis, the top end of the rotating shaft is fixedly connected to the center of the rotating disk, a group of supporting bearings are arranged on the chassis and close to the edge of the chassis, and the supporting bearings are in contact with the top surface of the rotating disk; the middle of the chassis is provided with a rotating unit which drives the rotating disc to rotate;

The mounting mechanism comprises a workbench, and a fixing clamp for mounting the special-shaped small-caliber pipe is arranged on the workbench;

the top seat and the base plate are fixedly connected through a connecting column, the rotating seat and the workbench are connected through a fixed column and a telescopic column, the bottom end of the fixed column is fixedly installed on the rotating seat, the top end of the fixed column is hinged to the workbench, the bottom end of the telescopic column is hinged to the rotating seat, and the top end of the telescopic column is hinged to the workbench.

The invention also has the following technical characteristics:

The rotating unit comprises a volute spiral spring, the outer end of the volute spiral spring is connected to the base plate through a fixing piece, and the inner end of the volute spiral spring is connected to the rotating shaft.

The rotating disc is provided with a plurality of lightening holes.

the telescopic column comprises an inner column and an outer column, the inner column is sleeved in the outer column, a corresponding group of insertion holes are formed in the inner column and the outer column, and the inner column and the outer column are connected by inserting the pin shaft into the insertion holes.

The flexible joint is made of rubber.

the invention also discloses a pneumatic mechanical rust removing process for the inner wall of the special-shaped small-caliber pipe, which adopts the pneumatic mechanical rust removing device for the inner wall of the special-shaped small-caliber pipe.

The process specifically comprises the following steps:

filling an abrasive in the special-shaped small-caliber pipe, sealing, fixing the special-shaped small-caliber pipe on a fixing clamp, and adjusting the rotation speed of the rotating unit and the frequency of the pneumatic solenoid valve;

Starting an air source, opening a pressure reducing valve, starting a pneumatic electromagnetic valve to enable a pneumatic mechanical derusting device on the inner wall of the special-shaped small-caliber pipe to be in a working state, and derusting the inner wall of the special-shaped small-caliber pipe through an abrasive;

Step three, after working for a period of time, closing the pneumatic electromagnetic valve, stopping the pneumatic mechanical rust removing device on the inner wall of the special-shaped small-caliber pipe from working, adjusting the length of the telescopic column, inclining the workbench, and repeating the operation of the step two to continuously remove rust;

And step four, repeating the step two and the step three until no rust remains.

The frequency of the pneumatic electromagnetic valve is between 0 Hz and 15Hz, and the amplitude of the workbench is 1 mm to 3 mm.

The rotation rate of the rotating unit is 2 min/circle.

the filling volume ratio of the grinding material to the inner cavity of the special-shaped small-caliber pipe is 0.3-0.55: 1.

the particle size of the abrasive is 3-8 mm.

The grinding material is made of high-wear-resistance materials, preferably tungsten carbide materials.

compared with the prior art, the invention has the following technical effects:

the vibration machine can be freely adjusted through the frequency of the pneumatic electromagnetic valve, and different frequencies are selected according to different special-shaped small-caliber pipes, so that the vibration machine can vibrate at multiple angles.

The angle of the workbench can be changed by adjusting the telescopic length of the telescopic column.

(III) the invention can realize rotation within a certain time through the rotating mechanism, so that the whole workbench can continuously rotate.

Compared with the traditional rust removing method, the rust removing method has good rust removing effect and can meet the requirement.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the pneumatic unit.

Fig. 3 is a schematic structural view of the telescopic column.

the meaning of the individual reference symbols in the figures is: 1-a vibration mechanism, 2-a rotating mechanism, 3-an installation mechanism, 4-a special-shaped small-caliber pipe, 5-a connecting column, 6-a fixed column and 7-a telescopic column;

101-base, 102-top seat, 103-protection spring, 104-air source, 105-pressure reducing valve, 106-air bag, 107-pneumatic solenoid valve, 108-high frequency air cylinder, 109-flexible joint, 110-rigid joint and 111-support column;

201-chassis, 202-rotating disk, 203-rotating shaft, 204-supporting bearing, 205-rotating unit, 206-volute spring, 207-fixed part, 208-lightening hole;

301-workbench, 302-fixture;

701-inner column, 702-outer column, 703-plug hole, 704-pin shaft.

The present invention will be explained in further detail with reference to examples.

Detailed Description

The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.