Pipeline inner wall rust removal device

Abstract

The utility model discloses a pipeline inner wall rust removal device, and relates to the technical field of steel pipe rust removal, the pipeline inner wall rust removal device comprises a rotary trolley, a purging assembly, a shot conveying assembly and a shot blasting device, the two ends of a steel pipe are each provided with a pair of sealing seats in an abutting mode, and the distance between the two sealing seats is axially adjustable, so that disassembly and assembly of the steel pipe are achieved; the rotary trolley is in butt joint with the steel pipe to make the steel pipe rotate in the circumferential direction, the air injection pipeline and a shot conveying pipeline in the shot conveying assembly are arranged in parallel, and the front sections of the air injection pipeline and the shot conveying pipeline penetrate through the movable sealing base and act in the steel pipe. Synchronous rust removal and purging of the inner wall of the whole steel pipe are achieved by means of the first trolley body and the rotating trolley, the problem that residual steel grit on the inner wall of the rust-removed steel pipe remains can be well solved, and the power of a fan can be reduced by about 20%; the dynamic sealing seat and the static sealing seat are combined for application, and the sealing effect of the two ends of the steel pipe is achieved in the axial moving process of the purging assembly and the impeller head.

Description

Technical Field

[0001] The present application relates to the technical field of steel pipe rust removal, and in particular to a device for removing rust from the inner wall of a pipeline. Background Art

[0002] Rust removal on the inner wall of steel pipes during production is a crucial quality control link. Rust removal on the inner wall during production can provide a clean and rust-free layer for subsequent welding and coating anti-corrosion treatment, such as paint and lining, to ensure adhesion; Rust removal on the inner wall during use can extend the service life of the steel pipe, ensure the purity of the transported liquid or gas, oil, water and other media, and do not affect the material properties; Rust removal on the inner wall of steel pipes is often achieved by shot blasting, and the rust removal of the inner wall is carried out by a high-speed rotating shot blasting machine. Some equipment uses a retractable nozzle or a shot blasting machine with a flexible transmission system that can move inside the steel pipe to ensure that the inner surface is evenly rust-removed. This type of method is particularly suitable for large-diameter steel pipes, such as those used in fire water supply, oil and gas transportation, etc.

[0003] Although the existing steel pipe inner wall rust removal device is equipped with a high-horsepower fan induced air system, which is used to absorb the steel sand produced by the shot blasting machine after the shot blasting is completed, there will still be a small amount of residual steel sand on the inner wall of the steel pipe, affecting the subsequent use of the steel pipe. Utility Model Content

[0004] The present invention provides a device for removing rust from the inner wall of a pipeline, and the specific implementation method is as follows:

[0005] A pipeline inner wall rust removal device, comprising:

[0006] A rotating trolley used to lift the steel pipe and rotate it in the circumferential direction. A pair of sealing seats are respectively abutted at both ends of the steel pipe, and the distance between the two sealing seats is axially adjustable, thereby realizing the disassembly and assembly of the steel pipe. The rotating trolley abuts against the steel pipe to make it rotate in the circumferential direction;

[0007] The purge assembly, the shot conveying assembly and the shot blaster, the air jet pipelines of the two and the shot conveying pipeline in the shot conveying assembly are arranged in parallel, and the front sections of the two pass through the movable sealing seat and act on the steel pipe. The injection end of the shot blaster points to the inner wall side of the steel pipe, and the axial rust removal is performed in the circumferentially rotating steel pipe through the axially movable purge assembly and the shot blaster, thereby realizing the rust removal operation of the entire inner wall of the steel pipe.

[0008] Based on the above technical scheme, in the rust removal treatment of the inner wall of the steel pipe, the jet pipeline and the shot conveying assembly are integrated on a movable first vehicle body, the jet pipeline and the shot conveying assembly are started to operate, and high-speed shot is pneumatically ejected toward the inner wall of the steel pipe. With the help of the kinetic energy of the airflow, the shot can effectively impact the rust layer on the inner wall of the steel pipe, achieving efficient removal without generating residual sand and shot, which is conducive to continuous operation and improves efficiency.

[0009] Preferably, a pair of sealing seats are specifically divided into a dynamic sealing seat and a static sealing seat, and a first guide groove and a second guide groove are respectively opened on the inner side of the two seats, and the two seats respectively abut against the two ends of the corresponding steel pipe.

[0010] Based on the above technical solution, the first guide groove and the second guide groove are ingeniously matched to achieve the sealing of the internal space of the steel pipe, ensuring the high efficiency and environmental protection of the sand and shot rust removal process. The first guide groove and the second guide groove are respectively positioned at the butt joint and sealing lips at both ends of the steel pipe, which can effectively surround the inner cavity of the steel pipe to form a sealing ring to block the passage of sand and shot and air, so that they can only perform rust removal operations in the steel pipe without leaking to the external environment.

[0011] Preferably, the purge assembly, the dynamic sealing seat and the rotating trolley are all common rail vehicle body structures, and a blower and oil and water removal components are integrated on the first vehicle body of the purge assembly.

[0012] Based on the above technical solution, the oil and water removal components adopt the existing conventional filtering structure and activated carbon structure to filter the gas entering the jet pipeline. A one-way exhaust port can be installed on the corresponding static sealing seat, and a filter screen can be installed at the exhaust port to prevent sand and pills from being discharged.

[0013] Preferably, the output end of the fan is connected to the jet pipeline through an oil and water removal component, and a nozzle is provided at the end of the jet pipeline.

[0014] Preferably, a driving belt driven by a motor is provided in the shot conveying pipeline along its length direction, and the driving belt is used for transporting the shot.

[0015] Preferably, the shot blaster is arranged at the end of the shot conveying pipeline, and the length of the shot conveying pipeline extending into the dynamic sealing seat is greater than the length of the jet pipeline extending into the dynamic sealing seat.

[0016] Preferably, the dynamic sealing seat is composed of a second body and a seat body arranged on the second body, the first guide groove is opened on one side of the seat body, and the shot conveying pipeline and the jet pipeline pass through the axial direction of the first guide groove.

[0017] Based on the above technical solution, the shot conveying pipeline and the jetting pipeline are slidably connected to the first guide groove on the seat body, and the shot conveying pipeline and the jetting pipeline are continuously penetrated into the first guide groove through the advancement of the first vehicle body.

[0018] Preferably, the rotating trolley is provided with several stages along the direction of the steel pipe.

[0019] Preferably, the rotating trolley includes a third body, and a plurality of lifting rods are provided on both sides of the third body. A driving roller is rotatably provided at the top end of each lifting rod, and the driving rollers respectively abut against the two circumferential ends of the steel pipe.

[0020] Based on the above technical solution, the lifting rod can be controlled by a cylinder or by a plurality of limit holes, and the rotation direction of the driving roller is the same as the turnover direction of the steel pipe.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] 1. The utility model uses a purge assembly and a shot blaster in combination, and uses the first vehicle body and the rotating trolley to achieve synchronous rust removal and purge of the entire inner wall of the steel pipe, which can well solve the problem of residual steel sand retention on the inner wall of the rust-removed steel pipe, and the power of the fan can be reduced by about 20%;

[0023] 2. The utility model has a simple structure and utilizes a combination of a dynamic sealing seat and a static sealing seat to achieve a sealing effect at both ends of the steel pipe during the axial movement of the purge assembly and the shot blaster, thereby preventing the leakage of steel sand;

[0024] 3. The utility model realizes the circumferential rotation of the steel pipe by setting a plurality of rotating trolleys, and the assembly height of the steel pipe can be adjusted by means of the lifting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of a steel pipe;

[0026] Figure 2 It is a structural schematic diagram of the utility model;

[0027] Figure 3 This utility model Figure 2 A magnified view of the mid-anterior structure;

[0028] Figure 4 This utility model Figure 2 A magnified view of the mid-section structure;

[0029] Figure 5 This utility model Figure 2 A magnified view of the mid-posterior segment structure;

[0030] Figure 6 This utility model Figure 5 A magnified view of the structure in the middle;

[0031] Figure 7 It is a structural schematic diagram of the rotating trolley in the utility model.

[0032] Description of reference numerals:

[0033] 1. Steel pipe, 2. Purge assembly, 3. Dynamic seal seat, 4. Rotating trolley, 5. Shot blaster, 6. Jet pipeline, 7. Shot conveying assembly, 8. Static seal seat, 9. Nozzle,

[0034] 201, the first vehicle body, 202, the fan, 203, the oil and water removal component, 301, the second vehicle body, 302, the seat body, 303, the first guide groove, 401, the third vehicle body, 402, the lifting rod, 403, the driving roller, 701, the motor, 702, the shot material conveying pipeline, 703, the driving belt, 801, the second guide groove. DETAILED DESCRIPTION

[0035] The following describes the specific implementation of the utility model in conjunction with the accompanying drawings and embodiments:

[0036] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0037] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments to their relative relationships should be regarded as the scope of the implementation of the present utility model without substantially changing the technical content.

[0038] The following is combined with Figure 1-7 This application is described in further detail.

[0039] The embodiment of the present application discloses a device for removing rust from the inner wall of a pipeline.

[0040] Example 1

[0041] Reference Figures 1 to 6 The present embodiment discloses a pipeline inner wall rust removal device, comprising a purge assembly 2, a shot conveying assembly 7, a shot blaster 5 and a rotating trolley 4 for lifting a steel pipe 1 to rotate circumferentially. A pair of sealing seats are respectively abutted at both ends of the steel pipe 1, and the spacing between the two sealing seats is axially adjustable, thereby realizing the disassembly and assembly of the steel pipe 1. The rotating trolley 4 abuts against the steel pipe 1 to cause it to rotate circumferentially. The jet pipeline 6 of the purge assembly 2 and the shot conveying pipeline 702 in the shot conveying assembly 7 are arranged in parallel, and the front sections of the two pass through the movable sealing seat and act on the steel pipe 1. The jet end of the shot blaster 5 points to the inner wall side of the steel pipe 1.

[0042] The output end of the fan 202 is connected to the jet pipeline 6 through the oil and water removal component 203, and a nozzle 9 is provided at the end of the jet pipeline 6. A driving belt 703 driven by a motor 701 is provided in the shot conveying pipeline 702 along its length direction. The driving belt 703 is used for transporting the shot. In this structure, the shot blaster 5 is arranged at the end of the shot conveying pipeline 702, and the length of the shot conveying pipeline 702 extending into the dynamic sealing seat 3 is greater than the extending length of the jet pipeline 6.

[0043] The dynamic sealing seat 3 is composed of a second body 301 and a seat body 302 arranged on the second body 301 . The first guide groove 303 is opened on one side of the seat body 302 . The shot conveying pipeline 702 and the jet pipeline 6 pass through the axial direction of the first guide groove 303 .

[0044] Two rotating trolleys 4 are provided along the direction of the steel pipe 1. In this structure, the rotating trolley 4 includes a third car body 401. A plurality of lifting rods 402 are provided on both sides of the third car body 401. A driving roller 403 is rotatably provided at the top of each lifting rod 402. The driving rollers 403 respectively abut against the two circumferential ends of the steel pipe 1.

[0045] The specific implementation process is: put the steel pipe 1 on the driving roller 403 of the rotating trolley 4, and a pair of sealing seats are axially close to close the two ends of the steel pipe 1. The sealing seat can be provided with a corresponding rotating part at the abutting part with the steel pipe 1, that is, the guide groove abutting with the steel pipe 1 is provided on the rotating part; open the sweeping assembly 2 and the shot blasting machine 5, and the sand and shot are ejected from the shot blasting machine 5 through the shot conveying pipeline 702 to act on the inner wall of the steel pipe 1; during this period, the gas in the jet pipeline 6 is ejected from the nozzle 9 to act on the shot blasting part, that is, the purging is carried out simultaneously during the shot blasting; the rotating trolley 4 controls the driving roller 403 equipped with a motor to rotate actively, so that the steel pipe 1 rotates circumferentially and removes rust in the circumferential direction; after the rust removal of this section is completed, the second power system of the rotating trolley 4 controls the wheels to approach the steel pipe 1, and then completes the circumferential rust removal of the ends of the steel pipe 1 at different length positions; after the rust removal of the inner wall of the entire steel pipe 1 is completed, each structure is reset.

[0046] Example 2

[0047] Reference Figure 1 and Figure 5 , and based on Example 1, this embodiment further provides a pipeline inner wall rust removal device, a pair of sealing seats are specifically divided into a dynamic sealing seat 3 and a static sealing seat 8, the inner sides of both are respectively provided with a first guide groove 303 and a second guide groove 801, the two respectively abut against the two ends of the corresponding steel pipe 1, in this structure, the purge assembly 2, the dynamic sealing seat 3 and the rotating trolley 4 are all common rail body structures, and the first body 201 of the purge assembly 2 is integrated with a fan 202 and an oil and water removal component 203.

[0048] Many other changes and modifications can be made without departing from the concept and scope of the utility model. It should be understood that the utility model is not limited to a specific embodiment, and the scope of the utility model is defined by the appended claims.

Claims

1. A device for removing rust from the inner wall of a pipeline, characterized in that: include: A rotating trolley (4) for lifting a steel pipe (1) to rotate in a circumferential direction, wherein a pair of sealing seats are respectively provided at both ends of the steel pipe (1) and the distance between the two sealing seats is axially adjustable, thereby realizing the assembly and disassembly of the steel pipe (1), and the rotating trolley (4) abuts against the steel pipe (1) to cause it to rotate in a circumferential direction; A purge assembly (2), a shot conveying assembly (7) and a shot blaster (5), wherein the jet pipeline (6) of the purge assembly (2) and the shot conveying pipeline (702) in the shot conveying assembly (7) are arranged in parallel, and the front sections of the two pass through a movable sealing seat and act on the inside of the steel pipe (1), and the jet end of the shot blaster (5) points to the inner wall side of the steel pipe (1), and axial rust removal is performed in the circumferentially rotating steel pipe (1) through the axially movable purge assembly (2) and the shot blaster (5), thereby achieving rust removal of the entire inner wall of the steel pipe (1).

2. A pipeline inner wall rust removal device according to claim 1, characterized in that: The pair of sealing seats are specifically divided into a dynamic sealing seat (3) and a static sealing seat (8), both of which are respectively provided with a first guide groove (303) and a second guide groove (801) on their inner sides, and the two respectively abut against the two ends of the corresponding steel pipe (1).

3. A pipeline inner wall rust removal device according to claim 2, characterized in that: The purge assembly (2), the dynamic sealing seat (3) and the rotating trolley (4) are all common rail vehicle body structures, and a fan (202) and an oil and water removal component (203) are integrated on the first vehicle body (201) of the purge assembly (2).

4. A pipeline inner wall rust removal device according to claim 3, characterized in that: The output end of the fan (202) is connected to the jet pipeline (6) through the oil and water removal component (203), and a nozzle (9) is provided at the end of the jet pipeline (6).

5. A pipeline inner wall rust removal device according to claim 4, characterized in that: A driving belt (703) driven by a motor (701) is provided in the shot conveying pipeline (702) along its length direction, and the driving belt (703) is used for transporting the shot.

6. A pipeline inner wall rust removal device according to claim 5, characterized in that: The shot blaster (5) is arranged at the end of the shot conveying pipeline (702), and the length of the shot conveying pipeline (702) extending into the dynamic sealing seat (3) is greater than the extending length of the jet pipeline (6).

7. A pipeline inner wall rust removal device according to claim 6, characterized in that: The dynamic sealing seat (3) is composed of a second body (301) and a seat body (302) arranged on the second body (301); the first guide groove (303) is opened on one side of the seat body (302); and the shot conveying pipeline (702) and the jet pipeline (6) pass through the axial direction of the first guide groove (303).

8. A pipeline inner wall rust removal device according to claim 7, characterized in that: The rotating trolley (4) is provided with a plurality of stages along the direction of the steel pipe (1).

9. A pipeline inner wall rust removal device according to claim 8, characterized in that: The rotating trolley (4) comprises a third vehicle body (401), and a plurality of lifting rods (402) are provided on both sides of the third vehicle body (401). A driving roller (403) is rotatably provided at the top end of each lifting rod (402), and the driving rollers (403) respectively abut against the two circumferential ends of the steel pipe (1).

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