Steel pipe convenient to connect

Abstract

The utility model discloses a steel pipe convenient to connect, which comprises a connecting sleeve, a first steel pipe and a second steel pipe, and is characterized in that the right end of the first steel pipe, the left end of the second steel pipe and the two ends of the connecting sleeve are tensioned through tensioning components with symmetrical structures; and the right end of the first steel pipe, the left end of the second steel pipe and the two ends of the connecting sleeve are sealed through sealing assemblies which are structurally and symmetrically arranged, and the right end of the first steel pipe, the left end of the second steel pipe and the two ends of the connecting sleeve are sealed through sealing assemblies which are structurally and symmetrically arranged. The sealing effect is achieved, and the sealing effect is better due to the arrangement of the tight suction assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipes, and in particular relates to a steel pipe that is convenient to connect. Background Art

[0002] Steel pipe is a pipeline product made of steel. It has the characteristics of high strength, corrosion resistance, wide application range, safety and reliability, and easy processing and maintenance. It is widely used in construction, chemical industry, petroleum, natural gas and other fields.

[0003] During the use of steel pipes, sometimes they need to be butt-jointed. When two steel pipes are butt-jointed, a connecting sleeve is used to butt-join the two steel pipes. However, the connecting sleeve is usually just a simple threaded pipe, which is sealed by wrapping sealing tape during use, and the sealing effect is poor. Summary of the invention

[0004] To solve the above technical problems, the utility model provides the following technical solutions: a steel pipe that is easy to connect, comprising a connecting sleeve, a first steel pipe and a second steel pipe, characterized in that: the right end of the first steel pipe and the left end of the second steel pipe and the two ends of the connecting sleeve are tightened by a tightening assembly that is symmetrically arranged in structure, the right end of the first steel pipe and the left end of the second steel pipe and the two ends of the connecting sleeve are sealed by a sealing assembly that is symmetrically arranged in structure, a sealing groove that is hollow and passes through the connecting sleeve is provided in the connecting sleeve, the sealing assembly comprises a first sealing sleeve and a second sealing sleeve located in the sealing groove, the left sides of the first sealing sleeve and the second sealing sleeve are fixedly connected to the connecting sleeve, the right sides of the first sealing sleeve and the second sealing sleeve are arranged to abut against the left side of the second steel pipe, and a suction assembly for sucking the second steel pipe onto the first sealing sleeve and the second sealing sleeve is provided in the connecting sleeve.

[0005] As a further improvement of the present invention: the second sealing sleeve is arranged on the first sealing sleeve, the inner ring of the second sealing sleeve is spaced apart from the outer ring of the first sealing sleeve, the suction assembly includes a suction groove opened in the connecting sleeve, the right end of the suction groove is arranged to penetrate the space, the upper and lower widths of the suction groove match the upper and lower widths of the space, a piston is movably arranged in the suction groove, the piston is interference fit with the suction groove, and the piston is movably arranged in the suction groove through a movable assembly.

[0006] As a further improvement of the utility model: the movable component includes a movable block located in the suction groove, the contour of the movable block matches the cross-section of the suction groove, the movable block is located on the left side of the piston, the right side surface of the movable block is fixedly connected to the left side surface of the piston by a fixing column, and the connecting sleeve is provided with a driving component for driving the movable block to move left and right.

[0007] As a further improvement of the utility model: the driving assembly includes a driving plate, a driving groove is opened on the connecting sleeve, the lower end of the driving groove is connected with the upper end of the clamping groove, the upper end of the driving groove is connected with the circumferential outer surface of the connecting sleeve, the driving plate is movably arranged in the driving groove, the lower end of the driving plate is fixedly connected to the upper end of the movable block, the upper end of the driving plate extends out of the circumferential outer surface of the connecting sleeve, two mounting plates are fixedly arranged on the circumferential outer surface of the connecting sleeve, the two mounting plates are respectively located on the left and right sides of the driving groove, a transmission rod is fixedly and rotatably arranged between the two mounting plates, and the transmission rod is threadedly connected to the driving plate.

[0008] As a further improvement of the present invention: the length from the left end of the driving plate to the right end of the fixing column is greater than the length from the left side surface of the driving groove to the right side surface of the driving groove.

[0009] As a further improvement of the utility model: one end of the transmission rod protrudes from the mounting plate, and a rotating handle is fixedly provided on the end of the transmission rod protruding from the mounting plate.

[0010] As a further improvement of the utility model: the tensioning assembly includes ear plates respectively fixedly arranged on the circumferential outer surfaces of the second steel pipe and the connecting sleeve, the two ear plates are provided with through holes, the two ear plates are arranged at intervals, and the second steel pipe and the connecting sleeve are tightened and fixed by bolts passing through the through holes of the two ear plates.

[0011] The beneficial effect of the utility model is that by setting up the tensioning component and the sealing component, a sealing effect is achieved after the first steel pipe and the second steel pipe are connected through the connecting sleeve, and the setting of the suction component also makes the sealing effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a structural diagram of the utility model;

[0013] Attached Figure 2 For attachment Figure 1 A is an enlarged schematic diagram;

[0014] Attached Figure 3 It is a front view of the utility model;

[0015] Attached Figure 4 For attachment Figure 3 A magnified schematic diagram of B;

[0016] Attached Figure 5 It is a schematic diagram of the disassembly of the connecting sleeve, the first sealing sleeve and the second sealing sleeve;

[0017] Attached Figure 6 A schematic diagram showing the connection between the movable block and the piston via a fixed column;

[0018] Explanation of the reference numerals: 1. Connecting sleeve, 2. First steel pipe, 3. Second steel pipe, 4. Sealing groove, 5. First sealing sleeve, 6. Second sealing sleeve, 7. Suction groove, 8. Piston, 9. Movable block, 10. Fixed column, 11. Driving plate, 12. Driving groove, 13. Mounting plate, 14. Transmission rod, 15. Turning handle, 16. Ear plate. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0020] See attached Figure 1-6As shown, a steel pipe convenient for connection in this example includes a connecting sleeve 1, a first steel pipe 2 and a second steel pipe 3. The right end of the first steel pipe 2 and the left end of the second steel pipe 3 are tightened with the two ends of the connecting sleeve 1 by a tensioning assembly symmetrically arranged in structure. The right end of the first steel pipe 2 and the left end of the second steel pipe 3 are sealed with the two ends of the connecting sleeve 1 by a sealing assembly symmetrically arranged in structure. A sealing groove 4 is provided in the connecting sleeve 1 and is hollow and penetrates the connecting sleeve 1. The sealing assembly includes a first sealing sleeve 5 and a second sealing sleeve 6 located in the sealing groove 4. The left sides of the first sealing sleeve 5 and the second sealing sleeve 6 are fixedly connected to the connecting sleeve 1, and the right sides of the first sealing sleeve 5 and the second sealing sleeve 6 are fixedly connected to the connecting sleeve 1. The connecting sleeve 1 is provided with a clamping assembly for clamping the second steel pipe 3 onto the first sealing sleeve 5 and the second sealing sleeve 6, and the working principle of the utility model is as follows: since the right end of the first steel pipe 2 and the left end of the second steel pipe 3 and the two ends of the connecting sleeve 1 are tightened by a tensioning assembly symmetrically arranged in structure, the right end of the first steel pipe 2 and the left end of the second steel pipe 3 and the two ends of the connecting sleeve 1 are sealed by a sealing assembly symmetrically arranged in structure, a sealing groove 4 is provided in the connecting sleeve 1 and is hollow and penetrated with the connecting sleeve 1, and the sealing assembly includes a first sealing sleeve 5 and a second sealing sleeve 6 located in the sealing groove 4, and the left side of the first sealing sleeve 5 and the second sealing sleeve 6 It is fixedly connected to the connecting sleeve 1, and the right sides of the first sealing sleeve 5 and the second sealing sleeve 6 are set in contact with the left side of the second steel pipe 3. A suction component for sucking the second steel pipe 3 onto the first sealing sleeve 5 and the second sealing sleeve 6 is set in the connecting sleeve 1. The second sealing sleeve 6 is sleeved on the first sealing sleeve 5, and the inner ring of the second sealing sleeve 6 is spaced from the outer ring of the first sealing sleeve 5. The suction component includes a suction groove 7 opened in the connecting sleeve 1, and the right end of the suction groove 7 is set through the interval, and the upper and lower widths of the suction groove 7 match the upper and lower widths of the interval. A piston 8 is movably arranged in the suction groove 7, and the piston 8 is arranged with an interference fit with the suction groove 7. The piston 8 moves left and right through a movable component It is arranged in the suction groove 7, and the movable component includes a movable block 9 located in the suction groove 7. The contour of the movable block 9 matches the cross-section of the suction groove 7. The movable block 9 is located on the left side of the piston 8. The right side surface of the movable block 9 is fixedly connected to the left side surface of the piston 8 by a fixing column 10. The connecting sleeve 1 is provided with a driving component for driving the movable block to move left and right. The driving component includes a driving plate 11. The connecting sleeve 1 is provided with a driving groove 12. The lower end of the driving groove 12 is connected with the upper end of the suction groove 7. The upper end of the driving groove 12 is connected with the circumferential outer surface of the connecting sleeve 1. The driving plate 11 is movably arranged in the driving groove 12, and the lower end of the driving plate 11 is fixedly connected to the upper end of the movable block 9.The upper end of the driving plate 11 extends out of the circumferential outer surface of the connecting sleeve 1, and two mounting plates 13 are fixedly arranged on the circumferential outer surface of the connecting sleeve 1. The two mounting plates 13 are respectively located on the left and right sides of the driving groove 12. A transmission rod 14 is fixedly and rotatably arranged between the two mounting plates 13. The transmission rod 14 is threadedly connected to the driving plate 11. The length from the left end of the driving plate 11 to the right end of the fixing column 10 is greater than the length from the left side of the driving groove 12 to the right side of the driving groove 12. One end of the transmission rod 14 protrudes from the mounting plate 13, and a rotating handle 15 is fixedly arranged on the end of the transmission rod 14 protruding from the mounting plate 13. The tensioning assembly includes fixed The ear plates 16 are arranged on the outer circumferential surface of the second steel pipe 3 and the connecting sleeve 1, and through holes are opened on the two ear plates 16. The two ear plates 16 are arranged at intervals. The second steel pipe 3 and the connecting sleeve 1 are tightened and fixed by bolts passing through the through holes of the two ear plates 16. When the steel pipe needs to be installed, taking the second steel pipe 3 as an example, the left end of the second steel pipe 3 is inserted into the right end of the connecting sleeve 1, so that the left end face of the second steel pipe 3 is in conflict with the right side faces of the first sealing sleeve 5 and the second sealing sleeve 6, and then the bolts are passed through the ear plates 16 of the second steel pipe 3 and the connecting sleeve 1, and the second steel pipe 3 and the connecting sleeve 1 are tightened by the cooperation of the nut, so that the left end face of the second steel pipe 3 The first and second sealing sleeves 5 and 6 are tightly fitted with each other on the right side, so that the left end face of the second steel pipe 3 is sealed against the right end of the interval between the first and second sealing sleeves 5 and 6, thereby forming a closed area with the left end face of the second steel pipe 3, the interval between the first and second sealing sleeves 5 and 6, the tightening groove 7 and the right side face of the piston 8. Then, the first and second sealing sleeves 5 and 6 are required to tighten the left end face of the second steel pipe 3 to achieve a good sealing effect. The rotating handle 15 is turned to rotate the transmission rod 14. The transmission rod 14 drives the driving plate 11 to move left and right through the threaded transmission, thereby driving the driving plate 11 to move left and right. The plate 11 drives the fixed column 10 to move to the left, and the fixed column 10 drives the piston 8 to move to the left, so that the volume of the closed area formed by the left end face of the second steel pipe 3, the interval between the first sealing sleeve 5 and the second sealing sleeve 6, the suction groove 7 and the right side of the piston 8 increases, so that the air pressure in the closed area decreases. When it is less than the external air pressure, the left end face of the second steel pipe 3 will be sucked on the first sealing sleeve 5 and the second sealing sleeve 6, and the ear plate 16 is used to tighten it to achieve a better sealing effect. By setting up the tightening component and the sealing component, the first steel pipe 2 and the second steel pipe 3 are connected through the connecting sleeve 1, and a sealing effect is achieved. The setting of the suction component also makes the sealing effect better.

[0021] The utility model is further configured as follows: the second sealing sleeve 6 is sleeved on the first sealing sleeve 5, the inner ring of the second sealing sleeve 6 is spaced apart from the outer ring of the first sealing sleeve 5, the suction assembly includes a suction groove 7 opened in the connecting sleeve 1, the right end of the suction groove 7 is through-set with the space, the upper and lower widths of the suction groove 7 match the upper and lower widths of the space, a piston 8 is movably arranged in the suction groove 7, the piston 8 is interference fit with the suction groove 7, the piston 8 is movably arranged in the suction groove 7 through a movable assembly, and the suction assembly is provided to facilitate the suction of the first sealing sleeve 5 and the second sealing sleeve 6 with the second steel pipe 3, so that the sealing effect is better.

[0022] The utility model is further configured as follows: the movable component includes a movable block 9 located in the suction groove 7, the contour of the movable block 9 matches the cross-section of the suction groove 7, the movable block 9 is located on the left side of the piston 8, the right side surface of the movable block 9 is fixedly connected to the left side surface of the piston 8 by a fixing column 10, and the connecting sleeve 1 is provided with a driving component for driving the movable block to move left and right. By providing the movable component, it is convenient to drive the piston 8 to move left and right. Since the contour of the movable block 9 matches the cross-section of the suction groove 7, the cooperation between the movable block 9 and the suction groove 7 plays a guiding role, so that the moving trajectory of the movable block 9 is stable and not easy to shake.

[0023] The utility model is further configured as follows: the driving assembly includes a driving plate 11, a driving groove 12 is provided on the connecting sleeve 1, the lower end of the driving groove 12 is connected with the upper end of the suction groove 7, the upper end of the driving groove 12 is connected with the circumferential outer surface of the connecting sleeve 1, the driving plate 11 is movably arranged in the driving groove 12, the lower end of the driving plate 11 is fixedly connected to the upper end of the movable block 9, the upper end of the driving plate 11 extends out of the circumferential outer surface of the connecting sleeve 1, and the circumferential outer surface of the connecting sleeve 1 is fixedly provided with two mounting plates 13, the two mounting plates 13 are fixedly arranged on the circumferential outer surface of the connecting sleeve 1. The mounting plates 13 are respectively located on the left and right sides of the driving groove 12, and a transmission rod 14 is fixedly and rotatably arranged between the two mounting plates 13. The transmission rod 14 is threadedly connected to the driving plate 11. By setting up a driving assembly, it is convenient to drive the movable block 9 to move left and right through the connection between the driving plate 11 and the movable block 9, thereby driving the piston 8 to move left and right. The setting of the transmission rod 14 is convenient for driving the driving plate 11 to move left and right through threaded transmission. At the same time, the screw transmission has self-locking properties, so that after the position of the driving plate 11 is adjusted, the driving plate 11 is not easy to move left and right without external force.

[0024] The utility model is further configured as follows: the length from the left end of the driving plate 11 to the right end of the fixing column 10 is greater than the length from the left side of the driving groove 12 to the right side of the driving groove 12, so that even if the driving plate 11 moves to the right to conflict with the left side of the driving groove 12, the piston 8 will not enter a section of the driving groove 12, thereby preventing leakage.

[0025] The utility model is further configured as follows: one end of the transmission rod 14 protrudes from the mounting plate 13, and a rotating handle 15 is fixedly provided on the end of the transmission rod 14 protruding from the mounting plate 13. The rotating handle 15 facilitates the rotation of the transmission rod 14.

[0026] The utility model is further configured as follows: the tensioning assembly includes ear plates 16 respectively fixedly arranged on the circumferential outer surfaces of the second steel pipe 3 and the connecting sleeve 1, two through holes are opened on the two ear plates 16, and the two ear plates 16 are arranged at intervals. The second steel pipe 3 and the connecting sleeve 1 are tightened and fixed by bolts passing through the through holes of the two ear plates 16. By setting up the tensioning assembly, it is convenient to tighten the second steel pipe 3 on the connecting sleeve 1, and it is convenient to make the second steel pipe 3 fit tightly with the first sealing sleeve 5 and the second sealing sleeve 6, so that the sealing effect is better.

[0027] The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above implementation mode. Any modification, alteration or equivalent substitution made by a person skilled in the art based on the above description shall fall within the scope of protection of the present invention.

Claims

1. A steel pipe that is easy to connect, comprising a connecting sleeve (1), a first steel pipe (2) and a second steel pipe (3), characterized in that: The right end of the first steel pipe (2) and the left end of the second steel pipe (3) are tightened with the two ends of the connecting sleeve (1) by means of a tensioning assembly symmetrically arranged in structure, and the right end of the first steel pipe (2) and the left end of the second steel pipe (3) are sealed with the two ends of the connecting sleeve (1) by means of a sealing assembly symmetrically arranged in structure. A sealing groove (4) is provided in the connecting sleeve (1) and is arranged to pass through the hollow of the connecting sleeve (1). The sealing assembly comprises a first sealing sleeve (5) and a second sealing sleeve (6) located in the sealing groove (4). The left sides of the first sealing sleeve (5) and the second sealing sleeve (6) are fixedly connected to the connecting sleeve (1). The right sides of the first sealing sleeve (5) and the second sealing sleeve (6) are arranged to abut against the left side of the second steel pipe (3). A suction assembly for sucking the second steel pipe (3) onto the first sealing sleeve (5) and the second sealing sleeve (6) is provided in the connecting sleeve (1).

2. The conveniently connected steel pipe according to claim 1, characterized in that: The second sealing sleeve (6) is sleeved on the first sealing sleeve (5), the inner ring of the second sealing sleeve (6) is spaced apart from the outer ring of the first sealing sleeve (5), the suction assembly comprises a suction groove (7) provided in the connecting sleeve (1), the right end of the suction groove (7) is arranged to penetrate the space, the upper and lower widths of the suction groove (7) match the upper and lower widths of the space, a piston (8) is movably arranged in the suction groove (7), the piston (8) is interference fit with the suction groove (7), and the piston (8) is movably arranged in the suction groove (7) through a movable assembly.

3. The conveniently connected steel pipe according to claim 2, characterized in that: The movable assembly comprises a movable block (9) located in the suction groove (7), the contour of the movable block (9) matches the cross-section of the suction groove (7), the movable block (9) is located on the left side of the piston (8), the right side surface of the movable block (9) is fixedly connected to the left side surface of the piston (8) via a fixing column (10), and the connecting sleeve (1) is provided with a driving assembly for driving the movable block to move left and right.

4. The conveniently connected steel pipe according to claim 3, characterized in that: The driving assembly comprises a driving plate (11), a driving groove (12) is provided on the connecting sleeve (1), the lower end of the driving groove (12) is connected to the upper end of the clamping groove (7), the upper end of the driving groove (12) is connected to the circumferential outer surface of the connecting sleeve (1), the driving plate (11) is movably arranged in the driving groove (12), the lower end of the driving plate (11) is fixedly connected to the upper end of the movable block (9), the upper end of the driving plate (11) protrudes from the circumferential outer surface of the connecting sleeve (1), two mounting plates (13) are fixedly arranged on the circumferential outer surface of the connecting sleeve (1), the two mounting plates (13) are respectively located on the left and right sides of the driving groove (12), a transmission rod (14) is fixedly and rotatably arranged between the two mounting plates (13), and the transmission rod (14) is threadedly connected to the driving plate (11).

5. The conveniently connected steel pipe according to claim 4, characterized in that: The length from the left end of the driving plate (11) to the right end of the fixing column (10) is greater than the length from the left side surface of the driving groove (12) to the right side surface of the driving groove (12).

6. The conveniently connected steel pipe according to claim 5, characterized in that: One end of the transmission rod (14) is arranged to protrude from the mounting plate (13), and a rotating handle (15) is fixedly arranged on the end of the transmission rod (14) protruding from the mounting plate (13).

7. The conveniently connected steel pipe according to claim 6, characterized in that: The tensioning assembly comprises ear plates (16) respectively fixedly arranged on the circumferential outer surfaces of the second steel pipe (3) and the connecting sleeve (1), two ear plates (16) are provided with through holes, the two ear plates (16) are arranged at intervals, and the second steel pipe (3) and the connecting sleeve (1) are tensioned and fixed by bolts passing through the through holes of the two ear plates (16).

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