Spraying device for inner wall and outer wall of steel pipe

Abstract

The utility model discloses a spraying device for the inner wall and the outer wall of a steel pipe, and relates to the field of steel pipe machining. A side plate is fixedly installed on one side of the bottom plate, a top plate is fixedly installed on the top of the side plate, a fixing column is fixedly installed on the side plate, an inner sleeve is rotatably installed on the fixing column, and a tensioning assembly used for fixing a steel pipe is installed on the inner sleeve. The technical problems that when an existing steel pipe spraying device conducts spraying on the steel pipe, only the outer surface of the steel pipe can be sprayed, the inner wall of the steel pipe cannot be sprayed, all machining requirements cannot be met, and when the outer surface of the steel pipe is sprayed, the steel pipe is fixed through a clamp, and consequently the surface of the steel pipe cannot be comprehensively sprayed are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing, specifically to a steel pipe inner and outer wall spraying device. Background Technology

[0002] Steel pipes play a vital role in transporting crude oil, natural gas, coal gas, and other materials. Due to complex geological conditions, corrosion of steel pipes is a significant factor that directly affects their service life. Corrosion protection of steel pipes is generally achieved by spraying anti-corrosion coatings onto the steel pipes using a spray gun.

[0003] However, existing steel pipe spraying equipment can only spray the outer surface of the steel pipe and cannot spray the inner wall of the steel pipe, which cannot meet all processing requirements. Furthermore, when spraying the outer surface of the steel pipe, the steel pipe is fixed by a clamp, which makes it impossible to spray the entire surface of the steel pipe. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a steel pipe inner and outer wall spraying device, which solves the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a steel pipe inner and outer wall spraying device, including a base plate; a side plate is fixedly installed on one side of the base plate, a top plate is fixedly installed on the top of the side plate, a fixing column is fixedly installed on the side plate, an inner sleeve is rotatably installed on the fixing column, and a tensioning component for fixing the steel pipe is installed on the inner sleeve;

[0006] The tensioning assembly includes a tensioning plate, and the inner sleeve has a cavity. A bidirectional threaded rod is rotatably installed in the cavity. A pair of threaded blocks are screwed onto the bidirectional threaded rod. The inner sleeve has a first sliding opening. Each threaded block is hinged with a tensioning rod. The tensioning rod is slidably installed in the first sliding opening. Each tensioning plate is hinged to the other end of the pair of tensioning rods.

[0007] Preferably, an outer sleeve is fixedly fitted on the outer side of the inner sleeve, and a second sliding opening is provided on the outer sleeve. All tensioning rods pass through the second sliding opening and are connected to the tensioning plate. A spray pipe is fixedly installed on the outer sleeve by a fixing bracket, and a second spray liquid storage tank is fixedly installed on the outer sleeve. The second spray liquid storage tank is connected to the spray pipe, and a plurality of nozzles are provided on the spray pipe.

[0008] Preferably, an internal gear ring is rotatably mounted on the outer sleeve, a first motor is fixedly mounted on the fixed column, and a gear that meshes with the internal gear ring is fixedly mounted on the drive end of the first motor.

[0009] Preferably, a first spray liquid storage tank is fixedly installed on the top plate, and a spray hood is fixedly installed at the bottom of the top plate. The first spray liquid storage tank is connected to the spray hood through a connecting pipe, and a plurality of spray nozzles are provided at the bottom of the spray hood.

[0010] Preferably, a cylinder is fixedly installed on the base plate, and a support plate is fixedly connected to the telescopic end of the cylinder.

[0011] Preferably, a pair of guide rods are fixedly installed on the base plate, and the support plate is slidably connected to the pair of guide rods.

[0012] Beneficial effects

[0013] This utility model provides a steel pipe inner and outer wall spraying device, which has the following beneficial effects:

[0014] 1. An inner sleeve can be installed by means of a fixed column. A tensioning component can be installed on the inner sleeve to tighten and fix the steel pipe. A double-threaded rod can be rotatably installed in the cavity. A second motor is installed on the inner sleeve to drive the double-threaded rod. Starting the second motor can drive the double-threaded rod to rotate, which can drive a pair of threaded blocks to move, thereby driving the tensioning rod to swing and thus driving the tensioning plate to move, which can tighten and fix the inner wall of the steel pipe. By setting the inner sleeve to be rotatable, rotating the inner sleeve can drive the tensioning component and the steel pipe to rotate together, which facilitates the spraying of the entire outer surface of the steel pipe.

[0015] 2. A second spray liquid storage tank can be installed on the outer sleeve. The second spray liquid storage tank can be used to hold the spray liquid. With the installation of the spray pipe, the spray liquid in the second spray liquid storage tank can enter the spray pipe under the action of the pump. When the nozzle on the spray pipe is turned on, the spray liquid can be sprayed onto the inner wall of the steel pipe to facilitate the spraying of the inner wall of the steel pipe. The rotation of the inner sleeve can drive the rotation of the outer sleeve, which can drive the second spray liquid tank and the spray pipe to rotate together, so as to carry out comprehensive spraying of the inner wall of the steel pipe. Attached Figure Description

[0016] Figure 1 This is a front view of the internal structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0018] In the diagram: 1. Base plate; 2. Side plate; 3. Outer fixing cylinder; 4. Inner fixing cylinder; 5. Bidirectional threaded rod; 6. Threaded block; 7. Tensioning rod; 8. Tensioning plate; 9. First sliding port; 10. Second sliding port; 11. Top plate; 12. First spray liquid storage tank; 13. Spray hood; 14. Gear; 15. Internal gear ring; 16. Second spray liquid storage tank; 17. Spray pipe; 18. Fixing frame; 19. Cylinder; 20. Support plate; 21. Guide rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Wherein, directional terms such as "upper" and "lower" mentioned herein are used in conjunction with... Figure 1 The orientation is used as a reference.

[0020] Please see Figure 1-2 This utility model provides a technical solution: a steel pipe inner and outer wall spraying device, including a base plate 1; a side plate 2 is fixedly installed on one side of the base plate 1, a top plate 11 is fixedly installed on the top of the side plate 2, a fixing column is fixedly installed on the side plate 2, an inner sleeve 4 is rotatably installed on the fixing column, and a tensioning component for fixing the steel pipe is installed on the inner sleeve 4.

[0021] The tensioning assembly includes a tensioning plate 8, an inner sleeve 4 with a cavity, a bidirectional threaded rod 5 rotatably mounted in the cavity, a pair of threaded blocks 6 screwed onto the bidirectional threaded rod 5, a first sliding opening 9 on the inner sleeve 4, and tensioning rods 7 hinged to each threaded block 6. The tensioning rods 7 are slidably mounted in the first sliding opening 9, and each tensioning plate 8 is hinged to the other end of a pair of tensioning rods 7.

[0022] The inner sleeve 4 can be installed by mounting a fixed column. The tensioning component can be installed on the inner sleeve 4 to tighten and fix the steel pipe. A double-threaded rod 5 can be rotatably installed in the cavity. A second motor that drives the double-threaded rod 5 is installed on the inner sleeve 4. Starting the second motor can drive the double-threaded rod 5 to rotate, which can drive a pair of threaded blocks 6 to move, thereby driving the tensioning rod 7 to swing and thus driving the tensioning plate 8 to move, which can tighten and fix the inner wall of the steel pipe. By setting the inner sleeve 4 to be rotatably installed, rotating the inner sleeve 4 can drive the tensioning component and the steel pipe to rotate together, which facilitates the spraying of the entire outer surface of the steel pipe.

[0023] Furthermore, an outer sleeve 3 is fixedly fitted on the outer side of the inner sleeve 4. A second sliding opening 10 is provided on the outer sleeve 3. All tensioning rods 7 pass through the second sliding opening 10 and are connected to the tensioning plate 8. A spray pipe 17 is fixedly installed on the outer sleeve 3 through a fixing bracket 18. A second spray liquid storage tank 16 is fixedly installed on the outer sleeve 3. The second spray liquid storage tank 16 is connected to the spray pipe 17. Several nozzles are provided on the spray pipe 17.

[0024] A second spray liquid storage tank 16 can be installed on the outer sleeve 3. The second spray liquid storage tank 16 can be used to hold the spray liquid. The spray pipe 17 is installed, and the spray liquid in the second spray liquid storage tank 16 can enter the spray pipe 17 under the action of the pump. When the nozzle on the spray pipe 17 is opened, the spray liquid can be sprayed onto the inner wall of the steel pipe to facilitate the spraying of the inner wall of the steel pipe. The rotation of the inner sleeve 4 can drive the outer sleeve 3 to rotate, thereby driving the second spray liquid storage tank 16 and the spray pipe 17 to rotate together, so as to carry out comprehensive spraying of the inner wall of the steel pipe.

[0025] Furthermore, an internal gear ring 15 is rotatably mounted on the outer sleeve 3, a first motor is fixedly mounted on the fixed column, and a gear 14 that meshes with the internal gear ring 15 is fixedly mounted on the drive end of the first motor.

[0026] The first motor is installed and started, which drives the gear 14 to rotate. The gear 14 meshes with the gear ring, which drives the inner gear ring 15 to rotate, thereby driving the outer sleeve 3 to rotate.

[0027] Furthermore, a first spray liquid storage tank 12 is fixedly installed on the top plate 11, and a spray hood 13 is fixedly installed at the bottom of the top plate 11. The first spray liquid storage tank 12 is connected to the spray hood 13 through a connecting pipe, and several spray nozzles are provided at the bottom of the spray hood 13.

[0028] The first spray liquid storage tank 12 is installed to store the spray liquid. The spray liquid in the first spray liquid storage tank 12 can enter the spray hood 13 and then be sprayed out to the outer surface of the steel pipe through the nozzle.

[0029] Furthermore, a cylinder 19 is fixedly installed on the base plate 1, and a support plate 20 is fixedly connected to the telescopic end of the cylinder 19.

[0030] By installing cylinder 19, starting cylinder 19 can cause the extension and retraction of the cylinder 19 to drive the support plate 20 to rise and fall. When it is necessary to spray the inner wall of the steel pipe, the extension and retraction of the cylinder 19 can drive the support plate 20 to rise, which can support the steel pipe. The support plate 20 is arc-shaped, which can stably place the steel pipe on the support plate 20. At this time, the tension plate 8 can be retracted so that the spraying pipe 17 can spray the entire inner wall of the steel pipe.

[0031] Furthermore, a pair of guide rods 21 are fixedly installed on the base plate 1, and the support plate 20 is slidably connected to the pair of guide rods 21.

[0032] The guide rod 21 can guide the support plate 20.

[0033] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0034] The working principle and usage process of this utility model are as follows: When in use, starting the second motor drives the bidirectional threaded rod 5 to rotate, which in turn moves a pair of threaded blocks 6, causing the tensioning rod 7 to swing. This moves the tensioning plate 8 until its height exceeds the height of the spray pipe 17. The steel pipe to be sprayed is then placed outside the tensioning plate 8. The position of the tensioning plate 8 is adjusted according to the inner diameter of the steel pipe until the steel pipe is tensioned and fixed. The outlet valve on the first spray liquid storage tank 12 is opened, allowing the spray liquid to enter the spray hood 13 and then be sprayed out through the nozzle onto the outer wall of the steel pipe. Starting the first motor drives the gear 14 to rotate. Through the meshing of the gear 14 with the internal gear ring 15, the internal gear ring 15 can be driven... 5. Rotation drives the outer sleeve 3 and inner sleeve 4 tensioning components to rotate, thereby driving the steel pipe to rotate, so as to spray the entire outer surface of the steel pipe. After the outer wall of the steel pipe is sprayed, the cylinder 19 is started to drive the support plate 20 to rise, thereby supporting the steel pipe. The steel pipe can be placed on the support plate 20. The second motor is started again to retract the tension plate 8 and no longer tension the steel pipe. The pump body on the second spray liquid storage tank 16 is opened to let the spray liquid into the spray pipe 17, and then spray it out through the nozzle to the inner wall of the steel pipe. The first motor is started again to drive the outer sleeve 3, the second spray liquid storage tank 16 and the spray pipe 17 to rotate, so that the inner wall of the steel pipe can be fully sprayed.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for spraying the inner and outer walls of a steel pipe, characterized in that, Including the bottom plate (1), one side of the bottom plate (1) is fixedly installed with the side plate (2), the top of the side plate (2) is fixedly installed with the top plate (11), the side plate (2) is fixedly installed with the fixed column, the fixed column is rotatably installed with the inner sleeve (4), the inner sleeve (4) is installed with the tensioning assembly for fixing the steel pipe; The tensioning assembly includes a tensioning plate (8), a cavity is formed in the inner sleeve (4), a bidirectional threaded rod (5) is rotatably installed in the cavity, a pair of threaded blocks (6) are screwed on the bidirectional threaded rod (5), a first sliding opening (9) is formed in the inner sleeve (4), a tensioning rod (7) is hingedly connected to each of the threaded blocks (6), and the tensioning rod (7) is slidably installed in the first sliding opening (9).

2. A device for spraying the inner and outer walls of a steel pipe according to claim 1, characterized in that, The outer side of the inner sleeve (4) is fixedly sleeved with an outer sleeve (3), the outer sleeve (3) is provided with a second sliding opening (10), the tensioning rod (7) penetrates through the second sliding opening (10) and is connected with the tensioning plate (8), the outer sleeve (3) is fixedly installed with a spraying pipe (17) through a fixing frame (18), the outer sleeve (3) is fixedly installed with a second spraying liquid storage tank (16), the second spraying liquid storage tank (16) is communicated with the spraying pipe (17), and a plurality of nozzles are arranged on the spraying pipe (17).

3. A device for spraying the inner and outer walls of a steel pipe according to claim 2, characterized in that, The outer sleeve (3) is rotatably installed with an inner gear ring (15), the fixed column is fixedly installed with a first motor, and the driving end of the first motor is fixedly installed with a gear (14) engaged with the inner gear ring (15).

4. The apparatus according to claim 1, wherein The top plate (11) is fixedly installed with a first spraying liquid storage tank (12), the bottom of the top plate (11) is fixedly installed with a spraying cover (13), the first spraying liquid storage tank (12) is communicated with the spraying cover (13) through a connecting pipe, and a plurality of nozzles are arranged on the bottom of the spraying cover (13).

5. The apparatus according to claim 1, wherein The bottom plate (1) is fixedly installed with a gas cylinder (19), and the telescopic end of the gas cylinder (19) is fixedly connected with a supporting plate (20).

6. A device for spraying the inner and outer walls of a steel pipe according to claim 5, characterized in that, The bottom plate (1) is fixedly installed with a pair of guide rods (21), and the supporting plate (20) is slidably connected with the pair of guide rods (21).

Images