Automatic sand blasting device for tubing couplings and pup joints

Abstract

The utility model relates to an automatic sand blasting device for tubing couplings and pup joints. The automatic sand blasting device comprises a feeding rack, the sand blasting unit comprises a driving rotating part, a driven rotating part, a clamping cylinder and a sand blasting gun; a blanking rack; and a moving unit including a first moving portion and a second moving portion. Compared with the prior art, the oil pipe coupling and short section spraying device enables oil pipe coupling and short section spraying to be more automatic, saves resources, and improves production efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of pre-treatment of inner coatings of oil pipe couplings and short joints, in particular to an automatic sandblasting device for oil pipe couplings and short joints. Background Art

[0002] Oil pipes are widely used in oil extraction. After the metal inner wall of the oil pipe is coated with an anti-corrosion inner coating, the service life of the oil pipe can be significantly increased. At the same time, due to the smooth surface characteristics of the inner coating, it has good drag reduction performance during the oil extraction process, which can greatly improve the efficiency of oil extraction.

[0003] Conventional oil pipes are composed of a pipe body and couplings with a total length of about 9 meters, while oil pipe short sections are composed of a pipe body and couplings with a length of less than 3 meters. When coating the inner surface of the oil pipe, conventional inner coating spraying technology is to coat the inner surface of the pipe body and coupling as a whole. This coating technology cannot guarantee that the inner coating is completely covered at the gap between the pipe body and the coupling, and there is a risk that the metal substrate is exposed to the corrosive medium.

[0004] Therefore, the improved coating technology is to unscrew the coupling from the oil pipe, disassemble it, and then perform internal coating separately. Among them, the inner wall of the pipe body is coated as a whole, and the first and second threads of the pipe end are coated, and the coupling only needs to be coated in the middle area of ​​the inner wall. Then the coated coupling is reconnected to the coated pipe body by buckling, so that the overall integrity of the inner coating of the inner wall of the oil pipe can be maintained.

[0005] In the prior art, there is no device that can spray both the oil pipe coupling and the short joint, and the degree of automation of the spraying device is not high.

[0006] CN212146007U discloses a sandblasting device for processing oil pipe couplings, including a sandblasting box, a horizontal fixed pipe fixed on the right side wall of the sandblasting box, a telescopic cylinder fixed on the left side wall of the sandblasting box, a motor fixed on the end of the telescopic rod of the telescopic cylinder, an outer baffle plate penetrating the output shaft of the motor, the left side of the oil pipe coupling is sleeved on the convex column, the oil pipe coupling is located in the fixed pipe, a fixed rod is fixed in the fixed pipe, a cone block is rotatably connected to the left end of the fixed rod, the right end of the oil pipe coupling is tightly against the cone block, and sandblasting nozzles are evenly fixed on the circumference of the fixed pipe, and the sand outlet of the sandblasting nozzle corresponds to the annular space between the oil pipe coupling and the fixed pipe. However, this application can only sandblast the oil pipe couplings and short sections one by one, and the processing efficiency is not high, and it cannot meet the needs of automation. Utility Model Content

[0007] The purpose of the utility model is to overcome the defects of the prior art and provide an automatic sandblasting device for a tubing coupling and a short joint.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] An automatic sandblasting device for oil pipe couplings and short joints, comprising:

[0010] A loading rack for placing the tubing coupling or the short section;

[0011] A sandblasting unit is arranged beside the feeding frame and vertically arranged thereto, comprising an active rotating part driving the tubing coupling or the short section to rotate, a driven rotating part arranged opposite to the active rotating part, and a sandblasting gun passing through the active rotating part and blasting sand toward the inside of the tubing coupling or the short section;

[0012] A material unloading rack provided in the sandblasting unit and used for placing the sandblasted oil pipe couplings or short sections;

[0013] and a moving unit disposed below the loading rack, the sandblasting unit and the unloading rack, comprising a first moving part for moving the tubing coupling or the short section from the loading rack to the sandblasting unit, and a second moving part disposed beside the first moving part and used for transporting the sandblasted tubing coupling or the short section from the sandblasting unit to the unloading rack.

[0014] Furthermore, the sandblasting unit further comprises:

[0015] A clamping cylinder disposed between the active rotating part and the driven rotating part and used for clamping the oil pipe coupling or short joint after sandblasting;

[0016] A third moving part driving the sandblasting gun to move in a direction perpendicular to the feeding frame;

[0017] A rubber hose having one end connected to the sandblasting gun and the other end connected to an external sandblasting storage tank;

[0018] and an adjusting part for adjusting the vertical heights of the active rotating part, the driven rotating part, the third moving part, the sandblasting gun, and the fourth moving part.

[0019] Furthermore, the adjustment unit includes:

[0020] A first column having a plurality of screw holes at different vertical heights;

[0021] A second column arranged opposite to the first column, having a plurality of screw holes arranged in the same manner as those of the first column in a direction toward the first column;

[0022] A first movable plate, which is installed between the first column and the second column by bolts;

[0023] a third column arranged in parallel with the first column, and having a plurality of screw holes at different vertical heights;

[0024] A fourth column arranged opposite to the third column has a plurality of screw holes arranged in the same manner as the third column in a direction toward the third column;

[0025] A second movable plate, which is installed between the third column and the fourth column by bolts;

[0026] a plurality of first support rods passing through the first movable plate and the second movable plate, the clamping cylinder being mounted on the first support rods;

[0027] A first support box is installed at the end of the first support rod away from the first movable plate, the active rotating part is installed on the first support box and one end of the active rotating part protrudes through the first support box, and the sandblasting gun passes through the first movable plate, the second movable plate, and the protrusion of the active rotating part;

[0028] A fifth column arranged in parallel with the third column, having a plurality of screw holes of different vertical heights;

[0029] A sixth column arranged opposite to the fifth column has a plurality of screw holes arranged in the same manner as the fifth column in a direction toward the fifth column;

[0030] a third movable plate, which is installed between the fifth column and the sixth column by bolts;

[0031] A plurality of second support rods passing through the third movable plate;

[0032] And a second support box is installed at the end of the second support rod away from the third movable plate, the driven rotating part is installed on the second support box, the second support box is hollow inside and has an opening at the bottom, and the opening is connected to an external sandblasting recovery box.

[0033] Furthermore, the active rotating part includes a first cylinder installed on the first supporting box, a second cylinder rotatably arranged on the first cylinder, a sprocket passing through the first cylinder and driving the second cylinder to rotate, a reduction motor installed on the outer surface of the first supporting box and driving the sprocket to rotate, and a first thrust cylinder installed on the outer surface of the second movable plate and controlling the first supporting box to move in a direction parallel to the feeding frame, the front end of the second cylinder has a protrusion extending into the interior of the oil pipe coupling or the short section and abutting against the inner wall of the oil pipe coupling or the short section, the sandblasting gun passes through the sprocket, the first cylinder, the second cylinder, and the protrusion of the second cylinder, the sprocket is arranged inside the first supporting box and on the same plane as the reduction motor.

[0034] Furthermore, the driven rotating part includes a second thrust cylinder installed on the third movable plate and connected to the second supporting box, a third cylinder installed on the outer surface of the second supporting box, and a fourth cylinder rotatably arranged on the third cylinder, the front end of the fourth cylinder has a protrusion extending into the interior of the oil pipe coupling or the short section and abutting against the inner wall of the oil pipe coupling or the short section, and the protrusion is connected to the interior of the second supporting box, the fourth cylinder is driven to rotate by the second cylinder, and the fourth cylinder receives sandblasting from the sandblasting gun.

[0035] Furthermore, the third moving part includes:

[0036] A fourth movable plate slidably mounted on the first support rod, one end of the sandblasting gun being fixed on the fourth movable plate;

[0037] And an electric cylinder is installed on the first supporting box, one end of the electric cylinder is connected to the fourth moving plate.

[0038] Furthermore, the mobile unit further includes:

[0039] A rectangular frame having a length at least greater than the distance between the loading rack and the unloading rack;

[0040] And two translation cylinders are arranged at two ends of the rectangular frame and are respectively connected to the first moving part and the second moving part.

[0041] Furthermore, the first moving part includes a first moving body connected to the translation cylinder, a first lifting platform provided on the top of the first moving body, a first V-shaped frame provided above the first lifting platform, a first lifting cylinder provided inside the first moving body and connected to the first lifting platform, and a plurality of universal wheels provided at the bottom of the first moving body;

[0042] The second movable part includes a second movable body connected to the translation cylinder, a second lifting platform arranged on the top of the second movable body, a second V-shaped frame arranged above the second lifting platform, a second lifting cylinder arranged inside the second movable body and connected to the second lifting platform, and a plurality of universal wheels arranged at the bottom of the second movable body.

[0043] Furthermore, the loading rack includes a plurality of first support frames, and a first discharge box installed on the first support frames and having an opening on the top thereof. The first discharge box is roughly Z-shaped and its inclination angle satisfies the sliding of the oil pipe coupling or the short section from one end of the first discharge box to the other end.

[0044] Furthermore, the unloading frame includes a plurality of second support frames, and a second discharge box installed on the second support frames and having an opening on the top thereof. The second discharge box is roughly Z-shaped and its inclination angle satisfies the sliding of the oil pipe coupling or the short section from one end of the second discharge box to the other end.

[0045] Compared with the prior art, the utility model has the following beneficial effects:

[0046] (1) The utility model is fully automated. The operator only needs to place the oil pipe coupling or short section to be sprayed on the loading mechanism through a mechanical arm or manually. Since the loading mechanism has a slope, the oil pipe coupling or short section automatically moves to the other end of the loading mechanism and is automatically moved by the mobile unit to the sandblasting unit for sandblasting. Then, the mobile unit automatically moves to the unloading mechanism for unloading. The fully automated operation improves the spraying efficiency.

[0047] (2) The multiple columns of the utility model can be adjusted by bolt connection, which makes it easier for the first moving part or the second moving part of the moving unit to align with the clamping cylinder.

[0048] (3) The utility model sandblasts evenly, and the oil pipe coupling or short joint 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 cylinder, so that the spraying is smoother and the yield rate is improved.

[0049] (4) The utility model provides a second support box for collecting the blasting sand that is not sprayed to the inside of the oil pipe coupling or the short section, and the bottom of the second support box has an opening connected to the external blasting recovery box, so that the blasting sand can be reused, saving resources and making the environment cleaner, that is, the blasting sand will not escape.

[0050] (5) The mobile unit of the utility model is cleverly designed, and utilizes a translation cylinder to connect with the first mobile part or the second mobile part so that the movement range of the first mobile part and the second mobile part is more accurate during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0052] Figure 2 It is the front view of the utility model.

[0053] Figure 3 It is a left view of the utility model.

[0054] Figure 4 It is a top view of the utility model.

[0055] Figure 5 It is a partial schematic diagram of the active rotating part of the utility model.

[0056] Figure 6 It is a partial schematic diagram of the driven rotating part of the utility model.

[0057] Numbers in the figure:

[0058] 1-feeding frame, 101-first supporting frame, 102-first discharging box, 2-sandblasting unit, 201-active rotating part, 202-driven rotating part, 203-third moving part, 204-sandblasting gun, 205-rubber hose, 206-adjusting part, 207-fourth moving plate, 208-first column, 209-second column, 210-first moving plate, 211-third column, 212-fourth column, 213-second moving plate, 214-first supporting rod, 215-first supporting box, 216-fifth column, 217-sixth column, 218-third moving plate, 219-second supporting rod, 220-second supporting box, 221 1-reduction motor, 222-first cylinder, 223-second thrust cylinder, 224-third cylinder, 225-electric cylinder, 226-first thrust cylinder, 227-clamping cylinder, 228-second cylinder, 229-sprocket, 230-fourth cylinder, 3-unloading rack, 301-second support frame, 302-second discharge box, 4-moving unit, 401-first moving part, 402-second moving part, 403-rectangular frame, 404-translational cylinder, 405-first moving body, 406-first lifting platform, 407-first lifting cylinder, 408-second moving body, 409-second lifting platform, 410-second lifting cylinder. DETAILED DESCRIPTION

[0059] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0060] Features such as component models, material names, connection structures, control methods, etc. that are not clearly stated in this technical solution shall be deemed as common technical features disclosed in the prior art.

[0061] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In the description of the present invention, "multiple" means two or more than two, unless otherwise specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a bolt connection or a welding connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In order to make the spraying of oil pipe couplings and short joints more automated, save resources, and improve productivity, the utility model provides an automatic sandblasting device for oil pipe couplings and short joints. Figures 1 to 6 As shown, including:

[0064] A loading rack 1 for placing the tubing coupling or the short section;

[0065] A sandblasting unit 2 is arranged beside the feeding frame 1 and vertically arranged thereto, comprising an active rotating part 201 driving the tubing coupling or the nipple to rotate, a driven rotating part 202 arranged opposite to the active rotating part 201, and a sandblasting gun 204 passing through the active rotating part 201 and sandblasting the inside of the tubing coupling or the nipple;

[0066] A material unloading rack 3 provided at the sandblasting unit 2 and used for placing the sandblasted oil pipe couplings or short sections;

[0067] And a moving unit 4 is arranged below the loading rack 1, the sandblasting unit 2 and the unloading rack 3, which includes a first moving part 401 for moving the oil pipe coupling or the short section from the loading rack 1 to the sandblasting unit 2, and a second moving part 402 is arranged next to the first moving part 401 and is used to transport the sandblasted oil pipe coupling or short section from the sandblasting unit 2 to the unloading rack 3.

[0068] In some specific implementations, please refer to Figure 1 As shown, the sandblasting unit 2 also includes:

[0069] A clamping cylinder 227 disposed between the active rotating part 201 and the driven rotating part 202 and used for clamping the oil pipe coupling or short joint after sandblasting;

[0070] A third moving part 203 driving the sandblasting gun 204 to move in a direction perpendicular to the feeding frame 1; a rubber hose 205 connected to the sandblasting gun 204 at one end and connected to an external sandblasting storage tank at the other end;

[0071] and an adjusting unit 206 for adjusting the vertical heights of the active rotating unit 201 , the driven rotating unit 202 , the third moving unit 203 , the sandblasting gun 202 , and the fourth moving unit 204 .

[0072] For more specific implementations, please refer to Figure 1 As shown, the adjustment unit 206 includes:

[0073] A first column 208 having a plurality of screw holes at different vertical heights;

[0074] A second column 209 arranged opposite to the first column 208 has a plurality of screw holes arranged in the same manner as the first column 207 in a direction toward the first column 208;

[0075] A first movable plate 210, which is installed between the first column 208 and the second column 209 by bolts;

[0076] A third column 211 arranged in parallel with the first column 208, having a plurality of screw holes with different vertical heights;

[0077] A fourth column 212 arranged opposite to the third column 211 has a plurality of screw holes arranged in the same manner as the third column 211 in a direction toward the third column 211;

[0078] A second movable plate 213, which is installed between the third column 211 and the fourth column 212 by bolts;

[0079] A plurality of first support rods 214 passing through the first movable plate 210 and the second movable plate 213, and the clamping cylinder 227 is installed on the first support rods 214;

[0080] A first support box 215 is installed at the end of the first support rod 214 away from the first movable plate 210, the active rotating part 201 is installed on the first support box 215 and one end thereof protrudes through the first support box 215, and the sandblasting gun 202 passes through the first movable plate 210, the second movable plate 213, and the protrusion of the active rotating part 201;

[0081] A fifth column 216 arranged in parallel with the third column 211, having a plurality of screw holes with different vertical heights;

[0082] A sixth column 217 arranged opposite to the fifth column 216 has a plurality of screw holes arranged in the same manner as the fifth column 216 in a direction toward the fifth column 216;

[0083] A third movable plate 218, which is installed between the fifth column 216 and the sixth column 217 by bolts;

[0084] A plurality of second support rods 219 passing through the third movable plate 218;

[0085] And a second support box 220 is installed at the end of the second support rod 219 away from the third movable plate 218, the driven rotating part 202 is installed on the second support box 220, the second support box 220 is hollow inside and has an opening at the bottom, and the opening is connected to the external sandblasting recovery box.

[0086] For more specific implementations, please refer to Figure 1 , Figure 3 and Figure 5 As shown, the active rotating part 201 includes a first cylinder 222 installed on the first supporting box 215, a second cylinder 228 rotatably arranged on the first cylinder 222, a sprocket 229 passing through the first cylinder 222 and driving the second cylinder 228 to rotate, a reduction motor 221 installed on the outer surface of the first supporting box 215 and driving the sprocket 229 to rotate, and a first thrust cylinder 226 installed on the outer surface of the second movable plate 213 and controlling the first supporting box 215 to move in a direction parallel to the feeding frame 1, the front end of the second cylinder 228 has a protrusion extending into the interior of the oil pipe coupling or the short section and abutting against the inner wall of the oil pipe coupling or the short section, the sandblasting gun 202 passes through the sprocket 229, the first cylinder 222, the second cylinder 228, and the protrusion of the second cylinder 228, and the sprocket 229 is arranged inside the first supporting box 215 and on the same plane as the reduction motor 221.

[0087] In this embodiment, the reduction motor 221 drives the first cylinder 222 to rotate, and the first thrust cylinder 226 drives the first support box 215 to move horizontally along the first support rod 214, so that the raised part of the second cylinder 228 extends into the interior of the oil pipe coupling or the short section.

[0088] For more specific implementations, please refer to Figure 1 , Figure 3 and Figure 6 As shown, the driven rotating part 202 includes a second thrust cylinder 223 installed on the third movable plate 218 and connected to the second supporting box 220, a third cylinder 224 installed on the outer surface of the second supporting box 220, and a fourth cylinder 230 rotatably arranged on the third cylinder 224, the front end of the fourth cylinder 230 has a protrusion extending into the interior of the oil pipe coupling or the short section and abutting against the inner wall of the oil pipe coupling or the short section, and the protrusion is connected to the interior of the second supporting box 220, the fourth cylinder 230 is driven to rotate by the second cylinder 228, and the fourth cylinder 230 receives sandblasting from the sandblasting gun 202.

[0089] In this embodiment, the second thrust cylinder 223 drives the second support box 220 to move horizontally along the second support rod 219, so that the protrusion of the fourth cylinder 230 is tightly attached to the oil pipe coupling or the short section and is driven to rotate by the second cylinder 228.

[0090] For more specific implementations, please refer to Figure 1 and Figure 3 As shown, the third moving part 203 includes:

[0091] A fourth movable plate 207 slidably mounted on the first support rod 214, one end of the sandblasting gun 204 being fixed on the fourth movable plate 207;

[0092] And an electric cylinder 225 installed on the first supporting box 215 , one end of the electric cylinder 225 is connected to the fourth moving plate 207 .

[0093] In this embodiment, the electric cylinder 225 is fixed on the first support box 215, and the extension rod of the electric cylinder 225 is connected to the fourth movable plate 207. The fourth movable plate 207 is driven by the electric cylinder 225 to slide on the first support rod 214. Since the spray gun 204 is fixedly connected to the fourth movable plate 207, the spray gun 204 is driven by the fourth movable plate 204 to spray close to the oil pipe coupling or the inside of the short section.

[0094] In some specific implementations, please refer to Figure 1 As shown, the mobile unit 4 also includes:

[0095] A rectangular frame 403 having a length at least greater than the distance between the loading rack 1 and the unloading rack 3;

[0096] And two translation cylinders 404 are arranged at both ends of the rectangular frame 403, which are connected to the first moving part 401 and the second moving part 402 respectively.

[0097] In this embodiment, a first movable part 401 and a second movable part 402 are arranged inside the rectangular frame 403, and the extension rod of the translation cylinder 404 is respectively fixed to the first movable part 401 and the second movable part 402, so that the first movable part 401 and the second movable part 402 are driven to move by the extension rod of the translation cylinder 404 moving back and forth in the horizontal direction.

[0098] For more specific implementations, please refer to Figure 1 and Figure 2As shown, the first moving part 401 includes a first moving body 405 connected to the translation cylinder 404, a first lifting platform 406 disposed on the top of the first moving body 405, a first V-shaped frame disposed above the first lifting platform 406, a first lifting cylinder 407 disposed inside the first moving body 405 and connected to the first lifting platform 406, and a plurality of universal wheels disposed at the bottom of the first moving body 405;

[0099] The second movable part 402 includes a second movable body 408 connected to the translation cylinder 404, a second lifting platform 409 arranged on the top of the second movable body 408, a second V-frame arranged above the second lifting platform 409, a second lifting cylinder 410 arranged inside the second movable body 408 and connected to the second lifting platform 409, and a plurality of universal wheels arranged at the bottom of the second movable body 408.

[0100] In this embodiment, the first V-shaped frame and the second V-shaped frame are used to place the oil pipe coupling or the short section, the first jacking platform 406 is fixedly connected to the extension rod of the first jacking cylinder 407, and the first jacking platform 406 is raised or lowered in the vertical direction by the extension rod of the first jacking cylinder 407 retracting and retracting in the vertical direction, so that the first jacking platform 406 is connected to the loading frame 1, the second jacking platform 409 is fixedly connected to the extension rod of the second jacking cylinder 410, and the second jacking platform 409 is raised or lowered in the vertical direction by the extension rod of the second jacking cylinder 410 retracting and retracting in the vertical direction, so that the second jacking platform 409 is connected to the unloading frame 3,

[0101] In some specific implementations, please refer to Figure 1 and Figure 2 As shown, the loading frame 1 includes a plurality of first support frames 101, and a first discharge box 102 installed on the first support frame 101 and having an opening on the top. The first discharge box 102 is roughly Z-shaped and its inclination angle satisfies the sliding of the oil pipe coupling or the short section from one end of the first discharge box 102 to the other end.

[0102] In some specific implementations, please refer to Figure 1 and Figure 2 As shown, the unloading frame 3 includes a plurality of second support frames 301, and a second discharge box 302 installed on the second support frame 301 and having an opening on the top thereof. The second discharge box 302 is roughly Z-shaped and its inclination angle satisfies the sliding of the oil pipe coupling or the short section from one end of the second discharge box 302 to the other end.

[0103] The above embodiments may be implemented individually or in any combination of two or more.

[0104] The above implementation is described in more detail below with reference to specific examples.

[0105] Example 1

[0106] In order to make the spraying of oil pipe couplings and short joints more automated, save resources, and improve productivity, this embodiment provides an automatic sandblasting device for oil pipe couplings and short joints.

[0107] See also Figures 1 to 6 As shown, the device includes a loading rack 1 for placing oil pipe couplings or short sections, a sandblasting unit 2 disposed beside the loading rack 1 and vertically arranged with the loading rack 1, a unloading rack 3 disposed at the sandblasting unit 2 and used for placing the sandblasted oil pipe couplings or short sections, and a moving unit 4 disposed below the loading rack 1, the sandblasting unit 2 and the unloading rack 3.

[0108] Specifically, the sandblasting unit 2 is described as follows:

[0109] The sandblasting unit 2 includes an active rotating part 201 for driving the tubing coupling or short section to rotate, a driven rotating part 202 arranged opposite to the active rotating part 201, a sandblasting gun 204 passing through the active rotating part 201 and sandblasting the inside of the tubing coupling or short section, a clamping cylinder 227 disposed between the active rotating part 201 and the driven rotating part 202 and used to clamp the tubing coupling or short section after sandblasting, a first moving part 401 for moving the tubing coupling or short section from the feeding frame 1 to the sandblasting unit 2, and a first moving part 402 disposed at the first moving part. 401 and used for conveying the sandblasted oil pipe coupling or short section from the sandblasting unit 2 to the unloading frame 3; the third moving part 203 driving the sandblasting gun 204 to move in a direction perpendicular to the loading frame 1; a rubber hose 205 connected to the sandblasting gun 204 at one end and connected to an external sandblasting storage tank at the other end; and an adjusting part 206 for adjusting the vertical height of the active rotating part 201, the driven rotating part 202, the third moving part 203, the sandblasting gun 202, and the fourth moving part 204.

[0110] Specifically, the adjustment unit 206 is described as follows:

[0111] The adjusting portion 206 includes a first column 208 having a plurality of screw holes of different vertical heights, a second column 209 arranged opposite to the first column 208 and having a plurality of screw holes arranged in the same manner as the first column 207 in a direction toward the first column 208, a first movable plate 210 installed between the first column 208 and the second column 209 by bolts, a third column 211 arranged parallel to the first column 208 and having a plurality of screw holes of different vertical heights, a fourth column 212 arranged opposite to the third column 211 and having a plurality of screw holes arranged in the same manner as the third column 211 in a direction toward the third column 211, a second movable plate 213 installed between the third column 211 and the fourth column 212 by bolts, and a third movable plate 214 passing through the third column 211 and the fourth column 212. A plurality of first support rods 214 of a movable plate 210 and a second movable plate 213, a first support box 215 installed at the end of the first support rod 214 away from the first movable plate 210, a fifth column 216 arranged parallel to the third column 211 and having a plurality of screw holes of different vertical heights, a sixth column 217 arranged opposite to the fifth column 216 and having a plurality of screw holes arranged in the same direction as the fifth column 216 in the direction toward the fifth column 216, a third movable plate 218 installed between the fifth column 216 and the sixth column 217 by bolts, a plurality of second support rods 219 passing through the third movable plate 218, and a second support box 220 installed at the end of the second support rod 219 away from the third movable plate 218.

[0112] Among them, the clamping cylinder 227 is installed on the first support rod 214; the active rotating part 201 is installed on the first support box 215 and one end thereof protrudes through the first support box 215, the sandblasting gun 202 passes through the first movable plate 210, the second movable plate 213, and the protrusion of the active rotating part 201, and the driven rotating part 202 is installed on the second support box 220, the second support box 220 is hollow inside and has an opening at the bottom, and the opening is connected to the external sandblasting recovery box.

[0113] Specifically, the mobile unit 4 is described as follows:

[0114] The moving unit 4 includes a first moving part 401 for moving the tubing coupling or short section from the loading frame 1 to the sandblasting unit 2 , and a second moving part 402 disposed beside the first moving part 401 and used for transporting the sandblasted tubing coupling or short section from the sandblasting unit 2 to the unloading frame 3 .

[0115] The working principle of this embodiment is as follows:

[0116] The operator places the tubing coupling or short section on the loading rack 1, and the tubing coupling or short section moves to the lowest point of the loading rack 1. At this time, the first moving part 401 moves the tubing coupling or short section to the bottom of the sandblasting unit 2, the clamping cylinder 227 clamps the tubing coupling or short section, the active rotating part 201 clamps the tubing coupling or short section and its protrusion extends into the tubing coupling or short section, the driven rotating part 202 clamps the tubing coupling or short section, the clamping cylinder 227 clamps the tubing coupling or short section and retracts, and the first moving part 401 retracts to the side of the loading rack 1.

[0117] The third moving part 203 drives the sandblasting gun 204 to approach the oil pipe coupling or short joint, so that one end of the sandblasting gun 204 passes through the protrusion of the active rotating part 201, and then the sandblasting gun 204 performs sandblasting. The active rotating part 201 rotates when the sandblasting gun 204 performs sandblasting to ensure uniform sandblasting, and the driven rotating part 202 is driven to rotate by the active rotating part 201.

[0118] After the sandblasting is finished, the second moving part 402 moves to the bottom of the tubing coupling or short joint, the active rotating part 201 and the driven rotating part 202 retreat, and the clamping cylinder 227 clamps the tubing coupling or short joint. After the second moving part 402 receives the tubing coupling or short joint, the clamping cylinder 227 retreats, and the second moving part 402 moves the sprayed tubing coupling or short joint to the unloading mechanism 3.

[0119] Example 2

[0120] See also Figures 1 to 6 Compared with Example 1, most of them are the same, except that the active rotating part 201 includes a first cylinder 222 installed on the first supporting box 215, a second cylinder 228 rotatably arranged on the first cylinder 222, a sprocket 229 passing through the first cylinder 222 and driving the second cylinder 228 to rotate, a reduction motor 221 installed on the outer surface of the first supporting box 215 and driving the sprocket 229 to rotate, and a first thrust cylinder 226 installed on the outer surface of the second movable plate 213 and controlling the first supporting box 215 to move in a direction parallel to the feeding frame 1, the front end of the second cylinder (228) has a protrusion extending into the interior of the oil pipe coupling or the short section and abutting against the inner wall of the oil pipe coupling or the short section, the sandblasting gun 202 passes through the sprocket 229, the first cylinder 222, the second cylinder 228, and the protrusion of the second cylinder 228, and the sprocket 229 is arranged inside the first supporting box 215 and on the same plane as the reduction motor 221.

[0121] The driven rotating part 202 includes a second thrust cylinder 223 installed on the third movable plate 218 and connected to the second support box 220, a third cylinder 224 installed on the outer surface of the second support box 220, and a fourth cylinder 230 rotatably arranged on the third cylinder 224. The front end of the fourth cylinder 230 has a protrusion that extends into the interior of the oil pipe coupling or the short section and abuts against the inner wall of the oil pipe coupling or the short section, and the protrusion is connected to the interior of the second support box 220. The fourth cylinder 230 is driven to rotate by the second cylinder 228, and the fourth cylinder 230 receives sandblasting from the sandblasting gun 202.

[0122] The working principle of this embodiment is as follows:

[0123] In this embodiment, the reduction motor 221 drives the first cylinder 222 to rotate, and the first thrust cylinder 226 drives the first support box 215 to move horizontally along the first support rod 214, so that the raised portion of the second cylinder 228 extends into the interior of the oil pipe coupling or short section.

[0124] In this embodiment, the second thrust cylinder 223 drives the second support box 220 to move horizontally along the second support rod 219 , so that the protrusion of the fourth cylinder 230 is closely attached to the oil pipe coupling or short joint and is driven to rotate by the second cylinder 228 .

[0125] Example 3

[0126] See also Figures 1 to 6 , compared with embodiment 2, most of them are the same, except that the third moving part 203 includes:

[0127] A fourth movable plate 207 slidably mounted on the first support rod 214, one end of the sandblasting gun 204 being fixed on the fourth movable plate 207;

[0128] And an electric cylinder 225 is installed on the first supporting box 215 , and one end of the electric cylinder 225 is connected to the fourth moving plate 207 .

[0129] The working principle of this embodiment is as follows:

[0130] In this embodiment, the electric cylinder 225 is fixed on the first support box 215, and the extending rod of the electric cylinder 225 is connected to the fourth movable plate 207. The fourth movable plate 207 is driven by the electric cylinder 225 to slide on the first support rod 214. Since the spray gun 204 is fixedly connected to the fourth movable plate 207, the spray gun 204 is driven by the fourth movable plate 204 to spray near the inside of the oil pipe coupling or the short section.

[0131] Example 4

[0132] See also Figures 1 to 6 , compared with embodiment 1, most of them are the same, except that the mobile unit 4 also includes:

[0133] A rectangular frame 403 having a length at least greater than the distance between the loading rack 1 and the unloading rack 3;

[0134] And two translation cylinders 404 are arranged at both ends of the rectangular frame 403, which are connected to the first moving part 401 and the second moving part 402 respectively.

[0135] The first moving part 401 includes a first moving body 405 connected to a translation cylinder 404, a first lifting platform 406 disposed on the top of the first moving body 405, a first V-shaped frame disposed above the first lifting platform 406, a first lifting cylinder 407 disposed inside the first moving body 405 and connected to the first lifting platform 406, and a plurality of universal wheels disposed at the bottom of the first moving body 405;

[0136] The second movable part 402 includes a second movable body 408 connected to the translation cylinder 404, a second lifting platform 409 arranged on the top of the second movable body 408, a second V-shaped frame arranged above the second lifting platform 409, a second lifting cylinder 410 arranged inside the second movable body 408 and connected to the second lifting platform 409, and a plurality of universal wheels arranged at the bottom of the second movable body 408.

[0137] The working principle of this embodiment is as follows:

[0138] In this embodiment, a first movable part 401 and a second movable part 402 are arranged inside the rectangular frame 403, and the extension rod of the translation cylinder 404 is respectively fixed to the first movable part 401 and the second movable part 402, so that the first movable part 401 and the second movable part 402 are driven to move by the extension rod of the translation cylinder 404 moving back and forth in the horizontal direction.

[0139] In this embodiment, the first V-shaped frame and the second V-shaped frame are used to place the oil pipe coupling or short section, the first jacking platform 406 is fixedly connected to the extension rod of the first jacking cylinder 407, and the extension rod of the first jacking cylinder 407 is telescoped back and forth in the vertical direction so that the first jacking platform 406 rises or falls in the vertical direction, so that the first jacking platform 406 is connected to the loading frame 1, the second jacking platform 409 is fixedly connected to the extension rod of the second jacking cylinder 410, and the extension rod of the second jacking cylinder 410 is telescoped back and forth in the vertical direction so that the second jacking platform 409 rises or falls in the vertical direction, so that the second jacking platform 409 is connected to the unloading frame 3,

[0140] Example 5

[0141] See also Figures 1 to 6Compared with Example 1, most of them are the same, except that the loading frame 1 includes a plurality of first support frames 101, and a first discharge box 102 installed on the first support frame 101 and having an opening on the top thereof, and the first discharge box 102 is roughly Z-shaped and its inclination angle satisfies the sliding of the oil pipe coupling or the short section from one end of the first discharge box 102 to the other end.

[0142] The unloading frame 3 includes a plurality of second support frames 301, and a second discharge box 302 installed on the second support frame 301 and having an opening on the top. The second discharge box 302 is roughly Z-shaped and its inclination angle satisfies the sliding of the oil pipe coupling or short section from one end of the second discharge box 302 to the other end.

[0143] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. An automatic sandblasting device for oil pipe couplings and short joints, characterized in that: include: A loading rack (1) for placing the tubing coupling or the short section; A sandblasting unit (2) is arranged beside the feeding frame (1) and perpendicular to the feeding frame (1), comprising an active rotating part (201) for driving the oil pipe coupling or the short section to rotate, a driven rotating part (202) arranged opposite to the active rotating part (201), and a sandblasting gun (204) that passes through the active rotating part (201) and blasts sand toward the inside of the oil pipe coupling or the short section; A material unloading rack (3) provided at the sandblasting unit (2) and used for placing the oil pipe couplings or short sections that have been sandblasted; and a moving unit (4) disposed below the loading rack (1), the sandblasting unit (2) and the unloading rack (3), comprising a first moving part (401) for moving the oil pipe coupling or the short section from the loading rack (1) to the sandblasting unit (2), and a second moving part (402) disposed next to the first moving part (401) and used for transporting the sandblasted oil pipe coupling or the short section from the sandblasting unit (2) to the unloading rack (3).

2. The automatic sandblasting device for oil pipe couplings and short joints according to claim 1, characterized in that: The sandblasting unit (2) further comprises: A clamping cylinder (227) disposed between the active rotating part (201) and the driven rotating part (202) and used for clamping the oil pipe coupling or short joint that has been sandblasted; A third moving part (203) driving the sandblasting gun (204) to move in a direction perpendicular to the loading frame (1); A rubber hose (205) having one end connected to the sandblasting gun (204) and the other end connected to an external sandblasting storage tank; and an adjustment unit (206) for adjusting the vertical heights of the active rotating unit (201), the driven rotating unit (202), the third moving unit (203), the sandblasting gun (204), and the fourth moving unit.

3. The automatic sandblasting device for oil pipe couplings and short joints according to claim 2, characterized in that: The adjustment unit (206) comprises: A first column (208) having a plurality of screw holes at different vertical heights; a second column (209) arranged opposite to the first column (208), having a plurality of screw holes arranged in the same manner as the first column (208) in a direction toward the first column (208); A first movable plate (210) is installed between the first column (208) and the second column (209) by means of bolts; A third column (211) arranged in parallel with the first column (208), having a plurality of screw holes of different vertical heights; a fourth column (212) arranged opposite to the third column (211), having a plurality of screw holes arranged in the same manner as the third column (211) in a direction toward the third column (211); A second movable plate (213) is installed between the third column (211) and the fourth column (212) by means of bolts; a plurality of first support rods (214) passing through the first movable plate (210) and the second movable plate (213), the clamping cylinder (227) being mounted on the first support rods (214); A first support box (215) is installed at the end of the first support rod (214) in a direction away from the first movable plate (210), the active rotating part (201) is installed on the first support box (215) and a protrusion at one end thereof passes through the first support box (215), and the sandblasting gun (204) passes through the first movable plate (210), the second movable plate (213), and the protrusion of the active rotating part (201); a fifth column (216) arranged in parallel with the third column (211), having a plurality of screw holes of different vertical heights; a sixth column (217) arranged opposite to the fifth column (216), having a plurality of screw holes arranged in the same manner as the fifth column (216) in a direction toward the fifth column (216); A third movable plate (218) is installed between the fifth column (216) and the sixth column (217) by means of bolts; A plurality of second support rods (219) passing through the third movable plate (218); And a second support box (220) is installed at the end of the second support rod (219) away from the third movable plate (218), the driven rotating part (202) is installed on the second support box (220), the second support box (220) is hollow inside and has an opening at the bottom, and the opening is connected to an external sandblasting recovery box.

4. The automatic sandblasting device for oil pipe couplings and short joints according to claim 3, characterized in that: The active rotating part (201) comprises a first cylinder (222) mounted on the first supporting box (215), a second cylinder (228) rotatably arranged on the first cylinder (222), a sprocket (229) passing through the first cylinder (222) and driving the second cylinder (228) to rotate, a reduction motor (221) mounted on the outer surface of the first supporting box (215) and driving the sprocket (229) to rotate, and a reduction motor (221) mounted on the outer surface of the second moving plate (213) and controlling the first supporting box (215). A first thrust cylinder (226) moves in a direction parallel to the loading frame (1); the front end of the second cylinder (228) has a protrusion that extends into the interior of the oil pipe coupling or the short section and abuts against the inner wall of the oil pipe coupling or the short section; the sandblasting gun (204) passes through the sprocket (229), the first cylinder (222), the second cylinder (228), and the protrusion of the second cylinder (228); the sprocket (229) is arranged inside the first support box (215) and on the same plane as the reduction motor (221).

5. The automatic sandblasting device for oil pipe couplings and short joints according to claim 4, characterized in that: The driven rotating part (202) includes a second thrust cylinder (223) mounted on the third movable plate (218) and connected to the second supporting box (220), a third cylinder (224) mounted on the outer surface of the second supporting box (220), and a fourth cylinder (230) rotatably arranged on the third cylinder (224), wherein the front end of the fourth cylinder (230) has a protrusion extending into the interior of the oil pipe coupling or the short section and abutting against the inner wall of the oil pipe coupling or the short section, and the protrusion is connected to the interior of the second supporting box (220), the fourth cylinder (230) is driven to rotate by the second cylinder (228), and the fourth cylinder (230) receives sandblasting from the sandblasting gun (204).

6. The automatic sandblasting device for oil pipe couplings and short joints according to claim 3, characterized in that: The third moving part (203) comprises: a fourth movable plate (207) slidably mounted on the first support rod (214), one end of the sandblasting gun (204) being fixed on the fourth movable plate (207); and an electric cylinder (225) mounted on the first supporting box (215), one end of the electric cylinder (225) being connected to the fourth movable plate (207).

7. The automatic sandblasting device for oil pipe couplings and short joints according to claim 1, characterized in that: The mobile unit (4) further comprises: A rectangular frame (403) having a length at least greater than the distance between the loading rack (1) and the unloading rack (3); And two translation cylinders (404) are arranged at both ends of the rectangular frame (403), and are respectively connected to the first moving part (401) and the second moving part (402).

8. The automatic sandblasting device for oil pipe couplings and short joints according to claim 7, characterized in that: The first moving part (401) comprises a first moving body (405) connected to the translation cylinder (404), a first lifting platform (406) arranged on the top of the first moving body (405), a first V-shaped frame arranged above the first lifting platform (406), a first lifting cylinder (407) arranged inside the first moving body (405) and connected to the first lifting platform (406), and a plurality of universal wheels arranged at the bottom of the first moving body (405); The second movable part (402) includes a second movable body (408) connected to the translation cylinder (404), a second lifting platform (409) arranged on the top of the second movable body (408), a second V-shaped frame arranged above the second lifting platform (409), a second lifting cylinder (410) arranged inside the second movable body (408) and connected to the second lifting platform (409), and a plurality of universal wheels arranged at the bottom of the second movable body (408).

9. The automatic sandblasting device for oil pipe couplings and short joints according to claim 1, characterized in that: The loading frame (1) comprises a plurality of first support frames (101), and a first discharge box (102) mounted on the first support frames (101) and having an opening at the top thereof, wherein the first discharge box (102) is substantially Z-shaped and has an inclination angle sufficient for the oil pipe coupling or the short section to slide from one end of the first discharge box (102) to the other end.

10. The automatic sandblasting device for oil pipe couplings and short joints according to claim 1, characterized in that: The unloading frame (3) comprises a plurality of second support frames (301), and a second discharge box (302) mounted on the second support frames (301) and having an opening at the top thereof, wherein the second discharge box (302) is substantially Z-shaped and has an inclination angle that satisfies the oil pipe coupling or the short section sliding from one end of the second discharge box (302) to the other end.

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