Sand blasting machine for processing tubing coupling

Abstract

The invention discloses a sand blasting machine for tubing coupling machining, and relates to the technical field of sand blasting equipment. A raw material box is fixedly connected to the top end of the shell, an upper sand blasting pipe is connected to the top side of the raw material box in a penetrating mode, a butt joint hose is connected to the side of the raw material box in a penetrating mode, meanwhile, a side sand blasting pipe is connected to the outer end of the butt joint hose in a penetrating mode, the side sand blasting pipe is slidably connected to the side of the shell, and a fixing frame is fixedly connected to the bottom side of the interior of the shell. According to the sand blasting machine for tubing coupling machining, when a side sand blasting pipe moves, a butt joint disc and an abutting disc can be synchronously driven to move, the outer end of a tubing coupling extrudes an abutting air bag arranged on the inner side of the abutting disc, air in the abutting air bag enters an expansion air bag through a communicating pipe, and the expansion air bag is expanded; the internal threads of the tubing coupling can be protected and blocked through the expansion air bag, and the possibility that the internal threads of the tubing coupling are abraded due to the sand blasting effect and the follow-up butt joint stability is affected is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sandblasting equipment, in particular to a sandblasting machine for processing oil pipe couplings. Background Art

[0002] The oil pipe coupling is mainly used to connect the oil pipe to the well wall or the oil pipe, and is an indispensable tool in oil field drilling operations. It can effectively prevent the oil well pipe from breaking off, reduce the occurrence of accidents, and ensure the safety and smooth progress of drilling operations.

[0003] Sandblasting of tubing couplings is a process involving the surface treatment of tubing couplings. Its main purpose is to clean and pre-treat the surface of tubing couplings to remove grease, dirt, scale, rust, paint and other attachments on the surface, so that the surface of tubing couplings reaches a certain roughness, which is convenient for subsequent anti-corrosion, coating or connection processes.

[0004] Prior art 1 (publication number: CN118204917A, Chinese patent with publication date of 2024-06-18) An automatic sandblasting device for oil pipe couplings and short sections, including a feeding frame; a sandblasting unit, which includes an active rotating part, a driven rotating part, a clamping cylinder, and a sandblasting gun; a feeding frame; and a moving unit, which includes a first moving part and a second moving part. The oil pipe coupling or short section is rotated during spraying by the rotating function of the active rotating part, and the active rotating part and the driven rotating part are clamped by the clamping of the clamping cylinder, so that the spraying is more stable, the yield rate is improved, the spraying of the oil pipe coupling and the short section is more automated, resources are saved, and productivity is improved.

[0005] There is also prior art 2 (publication number: CN219465913U, Chinese patent with publication date of 2023-08-04), a sandblasting device for processing oil pipe couplings, which relates to the technical field of sandblasting equipment, including a casing, an inner wall of which is installed a motor 1, an output shaft of the motor 1 is fixedly connected to one end of a worm shaft, and the worm shaft is rotatably installed in the casing through a bearing seat 1, the bearing seat 1 is installed on the inner wall of the casing, and a gear 1 is fixedly connected to the other end of the worm shaft. This sandblasting device for processing oil pipe couplings is different from the prior art, can ensure comprehensive sandblasting, has strong linkage, and can completely sandblast with one reciprocating motion, without repeated sandblasting operations, thereby improving work efficiency, having strong sealing properties, and can prevent dust generated during sandblasting from floating out, which can protect the health of the staff, and the sand can fall into the collection tray through the inner bottom of the casing, so that the sand can be recycled.

[0006] Although the existing technologies 1 and 2 can be sandblasted, most of them can only be sandblasted on one side during the sandblasting process. At the same time, when the inside of the oil pipe coupling is sandblasted, the thread cannot be protected. The threaded part will produce certain wear under the action of sandblasting, thereby affecting the subsequent docking effect.

[0007] Therefore, we propose a sandblasting machine for processing oil pipe couplings to solve the above-mentioned problems. Summary of the invention

[0008] The object of the present invention is to provide a sandblasting machine for processing oil pipe couplings, so as to solve the problem raised by the above-mentioned background technology that in the sandblasting process currently on the market, only single-sided sandblasting can be performed, and at the same time, when sandblasting the inside of the oil pipe coupling, its thread cannot be protected, and its thread part will produce certain wear under the action of sandblasting, thereby affecting the subsequent docking effect.

[0009] To achieve the above object, the present invention provides the following technical solution: a sandblasting machine for processing oil pipe couplings, comprising a housing, a raw material box is fixedly connected to the top of the housing, an upper sandblasting pipe is connected through the top side of the raw material box, a docking hose is connected through the side of the raw material box, a side sandblasting pipe is connected through the outer end of the docking hose, and the side sandblasting pipe is slidably connected to the side of the housing; A fixing frame is fixedly connected to the inner bottom side of the shell, and a placement plate is fixedly connected between the two sets of fixing frames, and a screen is arranged on the inner lower surface of the shell, a push plate is fixedly connected to the outer side of the side sandblasting tube, and a knocking mechanism capable of knocking the screen is arranged between the push plate and the placement plate; The outer side of the side sandblasting pipe is rotatably connected with a docking plate, and the outer side of the docking plate is provided with a fitting mechanism which can protect the inside of the oil pipe coupling.

[0010] Preferably, linkage rollers are nested and connected between the fixing frames, and the end sides of the linkage rollers are fixedly connected to motors, and a belt transmission mechanism is arranged between the other ends of the linkage rollers.

[0011] Preferably, three groups of linkage rollers are arranged in an arc-shaped structure along the inner sides of the two groups of fixing frames, and the outer surface of the oil pipe coupling and the linkage rollers are in close contact with each other.

[0012] Preferably, the fitting mechanism comprises a telescopic push rod, the telescopic push rod is fixedly connected to the inner side of the shell, and the output end of the telescopic push rod is fixedly connected to the side of the push plate; The outer side of the docking plate is fixedly connected with a resistance plate, and the inner side of the resistance plate is fixedly connected with a resistance airbag. The interior of the docking plate is fixedly connected with an expansion airbag, and a connecting pipe is connected through the expansion airbag and the resistance airbag.

[0013] Preferably, the push plate drives the side sandblasting tube and the shell to form a sliding structure through a telescopic push rod, the diameter of the abutment disk is larger than the maximum diameter of the oil pipe coupling, and the abutment disk is rotatably connected to the side sandblasting tube.

[0014] Preferably, the interference airbag is arranged in an annular structure, and the interference airbag is connected with the expansion airbag through a connecting tube, and the expansion airbag is arranged in an annular structure inside the docking plate.

[0015] Preferably, the knocking mechanism comprises a knocking block, the knocking block is slidably connected to the placement plate, the upper surface of the knocking block is fixedly connected to a movable plate, and a spring is fixedly connected between the lower surface of the movable plate and the upper surface of the placement plate; The upper surface of the movable plate is fixedly connected with an arc-shaped protrusion, the lower surface side of the push plate is slidably connected to the fixed frame, and the lower surface of the push plate is fixedly connected with a resistance block, and the bottom of the shell is slidably connected with a collection box.

[0016] Preferably, the lower side of the push plate is located directly above the movable plate, and two groups of movable plates are symmetrically arranged about the center point of the fixing frame, and an arc-shaped structure is arranged between the lower end of the abutment block and the arc-shaped protrusion.

[0017] Preferably, the knocking block forms a sliding structure through a movable plate and a placement plate, and the movable plate forms an elastic structure through a spring and a placement plate, and the length of the knocking block is greater than the maximum height between the knocking block and the bottom of the shell, and the arc-shaped protrusion drives the movable plate to form a sliding structure through the resistance block.

[0018] Compared with the prior art, the present invention has the following beneficial effects: A side sandblasting pipe and an upper sandblasting pipe are provided. The outer side of the oil pipe coupling can be sandblasted through the upper sandblasting pipe, and the inner side of the oil pipe coupling can be sandblasted through the side sandblasting pipe, which further improves the sandblasting effect of the oil pipe coupling. At the same time, the device is provided with a screen, through which the residual sandblasting can be screened, and the excess sandblasting waste can be collected with the assistance of a collection box; The user can place the oil pipe coupling on two sets of fixing frames, and the fixing frames can be used to assist in limiting the oil pipe coupling. At this time, the lower side of the oil pipe coupling fits with the linkage roller, and the motor is started, so that the motor drives the linkage roller to rotate. At the same time, the other linkage rollers rotate synchronously through the transmission effect of the belt transmission mechanism. The friction force generated between the rotation of the linkage roller and the oil pipe coupling can drive the oil pipe coupling to rotate, so that the upper sandblasting tube can evenly sandblast the surrounding side of the oil pipe coupling. The user starts the telescopic push rod, so that the telescopic push rod drives the push plate to move, and the side sandblasting tube will synchronously move along the outer side of the shell under the driving action of the push plate until the side sandblasting tube is connected and extends into the inside of the oil pipe coupling. At this time, the side sandblasting tube can perform sandblasting operation on the inside of the oil pipe coupling, further improving the sandblasting effect of the oil pipe coupling; When the side sandblasting tube moves, it will synchronously drive the docking plate and the resistance plate to move. When the side sandblasting tube extends into the inside of the oil pipe coupling, the docking plate will synchronously dock to the inside of the oil pipe coupling. At the same time, the resistance plate will resist the outside of the oil pipe coupling. The outer end of the oil pipe coupling squeezes the resistance airbag arranged on the inside of the resistance plate. The gas inside the resistance airbag enters the expansion airbag through the connecting tube, causing the expansion airbag to expand. At this time, the expansion airbag can fit the inner wall side of the oil pipe coupling. When the oil pipe coupling rotates, it will synchronously drive the docking plate and the resistance plate rotatably connected to the side sandblasting tube to rotate. The internal thread of the oil pipe coupling can be protected and blocked by the expansion airbag, reducing the wear of the internal thread of the oil pipe coupling due to the sandblasting effect, which may affect the subsequent docking stability. When the telescopic push rod drives the push plate to move, the push plate will synchronously drive the resistance block set on the lower side to move. During the movement of the resistance block, the bottom end of the resistance block will fit and contact with the side of the arc-shaped protrusion set on the movable plate. At this time, the arc-shaped protrusion drives the movable plate to move under the driving force of the resistance block. The movable plate synchronously drives the knocking block to move downward along the placement plate, so that the knocking block knocks on the screen, speeding up the screening of waste by the screen. When the arc-shaped protrusion does not conflict with the resistance block, the movable plate is reset under the driving force of the elastic force of the spring, thereby facilitating subsequent resistance operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the collecting box of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing frame of the present invention; Figure 5 It is a schematic diagram of the arc-shaped protrusion three-dimensional structure of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the knocking block of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the docking plate of the present invention; Figure 8 It is a schematic diagram of a three-dimensional cross-sectional structure of a docking plate of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the inflatable airbag of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the airbag of the present invention.

[0020] In the figure: 1. Shell; 2. Docking hose; 3. Side sandblasting tube; 4. Upper sandblasting tube; 5. Raw material box; 6. Screen; 7. Collecting box; 8. Fixed frame; 9. Telescopic push rod; 10. Push plate; 11. Movable plate; 12. Arc-shaped protrusion; 13. Resistance block; 14. Knocking block; 15. Spring; 16. Placement plate; 17. Linkage roller; 18. Docking plate; 19. Resistance plate; 20. Resistance airbag; 21. Inflatable airbag; 22. Connecting pipe; 23. Motor; 24. Belt transmission mechanism. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1: Figure 1 and Figure 2 The technical solution shown in the figure, the present invention provides the following technical solution: a sandblasting machine for processing oil pipe couplings, disclosing a linkage roller 17, through which the oil pipe couplings can be driven to rotate: A shell 1, a raw material box 5 is fixedly connected to the top of the shell 1, an upper sandblasting tube 4 is penetrated and connected to the top side of the raw material box 5, and a docking hose 2 is penetrated and connected to the side of the raw material box 5, and a side sandblasting tube 3 is penetrated and connected to the outer end of the docking hose 2, and the side sandblasting tube 3 is slidably connected to the side of the shell 1; Linkage rollers 17 are nested and connected between the fixed frames 8, and a motor 23 is fixedly connected to the end side of the linkage roller 17, and a belt transmission mechanism 24 is arranged between the other ends of the linkage rollers 17. Three groups of linkage rollers 17 are distributed in an arc-shaped structure along the inner sides of the two groups of fixed frames 8, and the outer surface of the oil pipe coupling is in contact with the linkage rollers 17.

[0023] A side sandblasting tube 3 and an upper sandblasting tube 4 are provided. The upper sandblasting tube 4 can be used to sandblast the outer side of the oil pipe coupling, and the side sandblasting tube 3 can be used to sandblast the inner side of the oil pipe coupling, which further improves the sandblasting effect of the oil pipe coupling. At the same time, the device is provided with a screen 6, through which the residual sandblasting can be screened, and the excess sandblasting waste can be collected with the assistance of the collecting box 7. The user can place the oil pipe coupling on two sets of fixing frames 8, and the fixing frame 8 can be used to assist in limiting the oil pipe coupling. At this time, the lower side of the oil pipe coupling is in contact with the linkage roller 17, and the motor 23 is started, so that the motor 23 drives the linkage roller 17 to rotate. At the same time, the other linkage rollers 17 rotate synchronously through the transmission action of the belt transmission mechanism 24, and the friction generated between the rotation of the linkage roller 17 and the oil pipe coupling can drive the oil pipe coupling to rotate, so that the upper sandblasting tube 4 can evenly sandblast the surrounding side of the oil pipe coupling.

[0024] Embodiment 2: Figure 2 , Figure 4 , Figure 5 and Figure 6 The technical solution shown in the figure, the present invention provides the following technical solution: a sandblasting machine for processing oil pipe couplings, disclosing a knocking mechanism, through which the screen 6 can speed up the screening of waste materials: A fixing frame 8 is fixedly connected to the inner bottom side of the shell 1, and a placement plate 16 is fixedly connected between the two sets of fixing frames 8, and a screen 6 is arranged on the inner lower surface of the shell 1, a push plate 10 is fixedly connected to the outer side of the side sandblasting tube 3, and a knocking mechanism for knocking the screen 6 is arranged between the push plate 10 and the placement plate 16; The fitting mechanism includes a telescopic push rod 9, which is fixedly connected to the inner side of the shell 1, and the output end of the telescopic push rod 9 is fixedly connected to the side of the push plate 10, the outer side of the docking plate 18 is fixedly connected to a resistance plate 19, and the inner side of the resistance plate 19 is fixedly connected to a resistance airbag 20, the inside of the docking plate 18 is fixedly connected to an expansion airbag 21, and a connecting pipe 22 is connected through the expansion airbag 21 and the resistance airbag 20, the push plate 10 drives the side sandblasting tube 3 and the shell 1 to form a sliding structure through the telescopic push rod 9, the diameter of the resistance plate 19 is larger than the maximum diameter of the oil pipe coupling, and the resistance plate 19 is rotatably connected to the side sandblasting tube 3, the resistance airbag 20 is arranged in an annular structure, and the resistance airbag 20 is connected to the expansion airbag 21 through the connecting pipe 22, and the expansion airbag 21 is arranged in an annular separation inside the docking plate 18.

[0025] The user starts the telescopic push rod 9, so that the telescopic push rod 9 drives the push plate 10 to move, and the side sandblasting tube 3 is synchronously moved along the outer side of the housing 1 under the driving action of the push plate 10, until the side sandblasting tube 3 is docked and extends into the inside of the oil pipe coupling. At this time, the side sandblasting tube 3 can perform sandblasting operation on the inside of the oil pipe coupling, further improving the sandblasting effect on the oil pipe coupling; When the side sandblasting tube 3 moves, it will synchronously drive the docking plate 18 and the resistance plate 19 to move. When the side sandblasting tube 3 extends into the inside of the oil pipe coupling, the docking plate 18 is synchronously docked to the inside of the oil pipe coupling. At the same time, the resistance plate 19 and the outer side of the oil pipe coupling are in resistance. The outer end of the oil pipe coupling squeezes the resistance airbag 20 arranged on the inner side of the resistance plate 19. The internal gas of the resistance airbag 20 enters the expansion airbag 21 through the connecting tube 22, so that the expansion airbag 21 expands. At this time, the expansion airbag 21 can fit the inner wall side of the oil pipe coupling. When the oil pipe coupling rotates, it will synchronously drive the docking plate 18 and the resistance plate 19 rotatably connected to the side sandblasting tube 3 to rotate. The internal thread of the oil pipe coupling can be protected and blocked by the expansion airbag 21, thereby reducing the wear of the internal thread of the oil pipe coupling due to sandblasting, which may affect the subsequent docking stability.

[0026] Embodiment 3: Figure 3 , Figure 4 , Figure 7-10 The technical solution shown in the figure, the present invention provides the following technical solution: a sandblasting machine for processing oil pipe couplings, disclosing a fitting mechanism, through which the internal threads of the oil pipe couplings can be protected and blocked: The outer side of the side sandblasting tube 3 is rotatably connected to a docking plate 18, and a fitting mechanism capable of protecting the inside of the oil pipe coupling is arranged on the outer side of the docking plate 18; The knocking mechanism includes a knocking block 14, which is slidably connected to the placement plate 16, and the upper surface of the knocking block 14 is fixedly connected to the movable plate 11, and a spring 15 is fixedly connected between the lower surface of the movable plate 11 and the upper surface of the placement plate 16, and the upper surface of the movable plate 11 is fixedly connected to the arc-shaped protrusion 12, the lower surface side of the push plate 10 is slidably connected to the fixed frame 8, and the lower surface of the push plate 10 is fixedly connected to the resistance block 13, the bottom of the shell 1 is slidably connected to the collection box 7, and the lower side of the push plate 10 is fixedly connected to the collection box 7. Directly above the movable plate 11, the movable plate 11 is symmetrically arranged with two groups about the center point of the fixed frame 8, and an arc-shaped structure is arranged between the lower end of the resistance block 13 and the arc-shaped protrusion 12. The knocking block 14 forms a sliding structure with the movable plate 11 and the placement plate 16, and the movable plate 11 forms an elastic structure with the placement plate 16 through the spring 15, and the length of the knocking block 14 is greater than the maximum value of the height between the knocking block 14 and the bottom of the shell 1, and the arc-shaped protrusion 12 drives the movable plate 11 to form a sliding structure through the resistance block 13.

[0027] When the telescopic push rod 9 drives the push plate 10 to move, the push plate 10 will synchronously drive the resistance block 13 set on the lower side to move. During the movement of the resistance block 13, the bottom end of the resistance block 13 will fit and contact with the side of the arc-shaped protrusion 12 set on the movable plate 11. At this time, the arc-shaped protrusion 12 drives the movable plate 11 to move under the driving force of the resistance block 13. The movable plate 11 synchronously drives the knocking block 14 to move downward along the placement plate 16, so that the knocking block 14 knocks on the screen 6 to speed up the screening of waste by the screen 6. When the arc-shaped protrusion 12 does not conflict with the resistance block 13, the movable plate 11 is reset under the driving force of the elastic force of the spring 15, thereby facilitating subsequent resistance operations.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sandblasting machine for processing oil pipe couplings, comprising a housing (1), the top end of the housing (1) being fixedly connected to a raw material box (5), the top side of the raw material box (5) being penetrated by an upper sandblasting pipe (4), and the side of the raw material box (5) being penetrated by a docking hose (2), while the outer end of the docking hose (2) being penetrated by a side sandblasting pipe (3), and the side sandblasting pipe (3) being slidably connected to the side of the housing (1); It is characterized in that A fixing frame (8) is fixedly connected to the inner bottom side of the shell (1), and a placement plate (16) is fixedly connected between the two sets of fixing frames (8), and a screen (6) is arranged on the inner lower surface of the shell (1), a push plate (10) is fixedly connected to the outer side of the side sandblasting tube (3), and a knocking mechanism for knocking the screen (6) is arranged between the push plate (10) and the placement plate (16); The outer side of the side sandblasting pipe (3) is rotatably connected to a docking plate (18), and a fitting mechanism capable of protecting the inside of an oil pipe coupling is arranged on the outer side of the docking plate (18).

2. The sandblasting machine for processing oil pipe couplings according to claim 1, characterized in that: A linkage roller (17) is nested and connected between the fixed frames (8), a motor (23) is fixedly connected to the end side of the linkage roller (17), and a belt transmission mechanism (24) is arranged between the other ends of the linkage roller (17).

3. The sandblasting machine for processing oil pipe couplings according to claim 2, characterized in that: The linkage rollers (17) are arranged in three groups in an arc-shaped structure distributed along the inner sides of the two groups of fixing frames (8), and the outer surfaces of the oil pipe couplings and the linkage rollers (17) are in close contact with each other.

4. The sandblasting machine for processing oil pipe couplings according to claim 1, characterized in that: The fitting mechanism comprises a telescopic push rod (9), the telescopic push rod (9) is fixedly connected to the inner side of the housing (1), and the output end of the telescopic push rod (9) is fixedly connected to the side of the push plate (10); The outer side of the docking plate (18) is fixedly connected to a resistance plate (19), and the inner side of the resistance plate (19) is fixedly connected to a resistance airbag (20); the interior of the docking plate (18) is fixedly connected to an expansion airbag (21), and a connecting pipe (22) is connected through the expansion airbag (21) and the resistance airbag (20).

5. The sandblasting machine for processing oil pipe couplings according to claim 4, characterized in that: The push plate (10) drives the side sandblasting tube (3) and the housing (1) to form a sliding structure via a telescopic push rod (9); the diameter of the abutment plate (19) is greater than the maximum diameter of the oil pipe coupling, and the abutment plate (19) is rotatably connected to the side sandblasting tube (3).

6. The sandblasting machine for processing oil pipe couplings according to claim 4, characterized in that: The abutment airbag (20) is arranged in an annular structure, and the abutment airbag (20) is connected to the expansion airbag (21) through a connecting pipe (22), and the expansion airbag (21) is arranged in an annular partition inside the docking plate (18).

7. The sandblasting machine for processing oil pipe couplings according to claim 1, characterized in that: The knocking mechanism comprises a knocking block (14), the knocking block (14) is slidably connected to the placement plate (16), the upper surface of the knocking block (14) is fixedly connected to the movable plate (11), and a spring (15) is fixedly connected between the lower surface of the movable plate (11) and the upper surface of the placement plate (16); The upper surface of the movable plate (11) is fixedly connected with an arc-shaped protrusion (12), the lower surface side of the push plate (10) is slidably connected to the fixed frame (8), and the lower surface of the push plate (10) is fixedly connected with a resistance block (13), and the bottom of the shell (1) is slidably connected with a collection box (7).

8. The sandblasting machine for processing oil pipe couplings according to claim 7, characterized in that: The lower side of the push plate (10) is located directly above the movable plate (11), and the movable plate (11) is symmetrically arranged in two groups about the center point of the fixed frame (8), and the lower end of the abutment block (13) and the arc-shaped protrusion (12) are both arranged in an arc-shaped structure.

9. The sandblasting machine for processing oil pipe couplings according to claim 7, characterized in that: The knocking block (14) forms a sliding structure through the movable plate (11) and the placement plate (16), and the movable plate (11) forms an elastic structure through the spring (15) and the placement plate (16), and the length of the knocking block (14) is greater than the maximum value of the height between the knocking block (14) and the bottom of the shell (1), and the arc-shaped protrusion (12) drives the movable plate (11) through the abutment block (13) to form a sliding structure.

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