Steel pipe pre-bending internal dust removal device

Abstract

The utility model discloses a steel pipe pre-bending internal dust removal device which comprises fixing seats on the two sides of the upper portion of a bent steel pipe, the two fixing seats are fixedly connected with a fixing shaft and a fixing air inlet pipe respectively, the end, corresponding to the fixing shaft, of the fixing air inlet pipe is fixedly connected with a disc air cavity, and the surface of the disc air cavity is movably sleeved with a sealing air cavity. A plurality of L-shaped bent pipes located in the same vertical plane with the bent steel pipe are fixedly connected to the circumferential outer wall of the sealed air cavity at equal intervals, and the surfaces of the bent sections, away from the sealed air cavity, of the L-shaped bent pipes are sleeved with cylindrical sponge wipers. Dust in the bent steel pipe is blown away through the L-shaped bent pipe, and the sponge eraser is used for wiping the dust and removing the dust in the bent steel pipe; the sealing air cavity connected with the L-shaped bent pipe can rotate in a single way outside the disc air cavity to adjust the angle, so that a plurality of sponge wipers are alternately replaced and used, and the continuous production of a steel pipe production line is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipe bending, in particular to an internal dust removal device for pre-bending of steel pipes. Background Technique

[0002] The stainless steel pipe extrudes and bends a steel belt through a pressing wheel, squeezes and bends the steel belt into a tubular shape, and finally processes it into a steel pipe through welding, grinding and polishing, and cutting. Since the stainless steel pipe does not belong to precision parts, most stainless steel pipe production workshops are not designed as dust-free workshops. A large amount of raw material feeding and discharging vehicles coming in and out and the processes in the production and processing flow will generate dust. When bending, if not cleaned, some dust will be curled into the interior of the steel pipe, and the internal dust needs to be removed by later cleaning.

[0003] Therefore, in order to reduce the difficulty of cleaning the internal dust of the finished steel pipe, a device for removing dust inside the steel pipe during the pre-bending stage is designed. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides an internal dust removal device for pre-bending of steel pipes, which is used to achieve the purpose of removing dust inside the steel pipe during the pre-bending stage.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] An internal dust removal device for pre-bending of steel pipes includes fixed seats on both sides above the bent steel pipe. Two fixed seats are respectively fixedly connected with a fixed shaft and a fixed air inlet pipe. One end of the fixed air inlet pipe corresponding to the fixed shaft is fixedly connected with a disc air cavity. The bottom of the disc air cavity is provided with air outlet holes. The surface of the disc air cavity is movably sleeved with a sealed air cavity, and the circumferential inner side wall of the sealed air cavity is slidably connected with the circumferential outer side wall of the disc air cavity. A ratchet disc is fixedly sleeved on the fixed shaft, and a spring pawl movably clamped with the ratchet disc is fixedly installed on the side of the sealed air cavity;

[0007] A plurality of L-shaped bent pipes located in the same vertical plane as the bent steel pipe are equidistantly and fixedly connected to the circumferential outer wall of the sealed air cavity. Through holes are provided at the positions of the sealed air cavity corresponding to the L-shaped bent pipes. A cylindrical sponge wipe is sleeved on the surface of the bent section of the L-shaped bent pipe away from the sealed air cavity. The sponge wipe is movably clamped into the interior of the bent steel pipe from top to bottom, and the air outlet end of the L-shaped bent pipe faces the upstream of the conveying direction of the bent steel pipe.

[0008] Preferably, the sealed air cavity includes a cavity movably sleeved on the surfaces of the disc air cavity and the fixed air inlet pipe and a cover body corresponding to the spring pawl. The cover body is threadedly connected to the cavity.

[0009] Preferably, a sealing rubber ring is provided at the position of the cavity corresponding to the fixed air inlet pipe.

[0010] Preferably, a positioning slot is provided at the position of the cover corresponding to the fixed shaft, and anti-slip twisting lines are provided on the circumference of the cover.

[0011] Preferably, the number of the L-shaped bent pipes is not less than two, and the L-shaped bent pipes are rotationally symmetrically distributed on the circumference of the sealed air cavity, and the number of the L-shaped bent pipes corresponds to the number of the card slots on the ratchet disc.

[0012] Preferably, the sponge cleaner and the part of the L-shaped bent pipe corresponding to the sponge cleaner are coaxially arranged with the bent steel pipe, and the sponge cleaner is in interference fit with the bent steel pipe.

[0013] Preferably, a blowing disc and a positioning disc are fixedly connected to the L-shaped bent pipe. The blowing disc and the positioning disc are respectively located at the downstream and upstream ends of the sponge cleaner corresponding to the bent steel pipe conveying, and the air blowing holes of the blowing disc are arranged corresponding to the sponge cleaner. Air inlet holes are provided at the positions of the L-shaped bent pipe corresponding to the blowing disc and the sponge cleaner.

[0014] Preferably, the caliber of the air inlet hole corresponding to the blowing disc is larger than the caliber of the air inlet hole corresponding to the sponge cleaner.

[0015] Preferably, a spiral groove is provided on the circumferential outer wall of the sponge cleaner.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] By arranging the L-shaped bent pipe and the sponge cleaner, the L-shaped bent pipe blows and removes dust inside the bent steel pipe, and the sponge cleaner wipes the dust, which is used for dust removal inside the bent steel pipe. In addition, the sealed air cavity connected to the L-shaped bent pipe can rotate and adjust the angle unidirectionally outside the disc air cavity, and can rotate to switch different L-shaped bent pipes and sponge cleaners, realizing the rotation and replacement of multiple sponge cleaners for use. The used sponge cleaners can be cleaned separately without affecting the continuous production of the steel pipe production line. The device has a simple structure and is convenient to use, can remove dust inside the steel pipe at the pre-bending stage, reduce the difficulty of cleaning the internal dust of the finished steel pipe, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a front sectional view of the present utility model;

[0020] Figure 3 is a side view of the present utility model;

[0021] Figure 4 is a side view of the present utility model at the corresponding position of the ratchet disc;

[0022] Figure 5 This is a partial structural side sectional view at the corresponding position of the L-shaped elbow of the present utility model.

[0023] In the figure: 1, bent steel pipe; 2, fixed seat; 3, fixed shaft; 4, fixed intake pipe; 5, disc air chamber; 501, air outlet hole; 6, sealed air chamber; 601, through hole; 602, cavity; 603, cover body; 604, sealing rubber ring; 7, ratchet disc; 8, spring pawl; 9, L-shaped elbow; 901, intake hole; 10, sponge wiper; 1001, spiral groove; 11, blowing disc; 1101, blowing hole; 12, positioning disc. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1-5 shown, the present utility model provides a technical solution: a dust removal device for internal pre-bending of a steel pipe, including fixed seats 2 on both sides above the bent steel pipe 1. Two fixed seats 2 are respectively fixedly connected with a fixed shaft 3 and a fixed intake pipe 4. One end of the fixed intake pipe 4 corresponding to the fixed shaft 3 is fixedly connected with a disc air chamber 5. The bottom of the disc air chamber 5 is provided with an air outlet hole 501. The surface of the disc air chamber 5 is movably sleeved with a sealed air chamber 6, and the circumferential inner side wall of the sealed air chamber 6 is slidably connected with the circumferential outer side wall of the disc air chamber 5. A ratchet disc 7 is fixedly sleeved on the fixed shaft 3, and a spring pawl 8 that is movably engaged with the ratchet disc 7 is fixedly installed on the side of the sealed air chamber 6.

[0026] The sealed air chamber 6 includes a cavity 602 movably sleeved on the surfaces of the disc air chamber 5 and the fixed intake pipe 4 and a cover body 603 corresponding to the spring pawl 8. The cover body 603 is threadedly connected to the cavity 602. A sealing rubber ring 604 is provided at the position of the cavity 602 corresponding to the fixed intake pipe 4. A positioning slot is provided at the position of the cover body 603 corresponding to the fixed shaft 3, and anti-slip threads for screwing are provided on the circumference of the cover body 603.

[0027] A plurality of L-shaped elbows 9 located in the same vertical plane as the bent steel pipe 1 are fixedly connected at equal intervals on the circumferential outer wall of the sealed air chamber 6. A through hole 601 is provided at the position of the sealed air chamber 6 corresponding to the L-shaped elbow 9. A cylindrical sponge wiper 10 is sleeved on the surface of the bent section of the L-shaped elbow 9 away from the sealed air chamber 6. The sponge wiper 10 is movably engaged with the inside of the bent steel pipe 1 from top to bottom, and the air outlet end of the L-shaped elbow 9 faces the upstream of the conveying of the bent steel pipe 1.

[0028] The number of L-shaped elbows 9 is not less than two, and the L-shaped elbows 9 are rotationally symmetrically distributed on the circumference of the sealing air cavity 6, and the number of L-shaped elbows 9 corresponds to the number of card slots on the ratchet disc 7. The sponge wiper 10 and the part of the L-shaped elbow 9 corresponding to the sponge wiper 10 are coaxial with the bent steel pipe 1, and the sponge wiper 10 is in interference fit with the bent steel pipe 1.

[0029] A blowing disc 11 and a positioning disc 12 are fixedly connected to the L-shaped elbow 9. The blowing disc 11 and the positioning disc 12 are respectively located at the downstream and upstream ends of the sponge wiper 10 corresponding to the bent steel pipe 1 in the conveying direction. The air blowing holes 1101 of the blowing disc 11 are arranged corresponding to the sponge wiper 10. Air inlet holes 901 are arranged at the positions of the L-shaped elbow 9 corresponding to the blowing disc 11 and the sponge wiper 10. The diameter of the air inlet hole 901 corresponding to the blowing disc 11 is larger than the diameter of the air inlet hole 901 corresponding to the sponge wiper 10. A spiral groove 1001 is arranged on the circumferential outer wall of the sponge wiper 10.

[0030] Working principle: The fixed seat 2 is erected on both sides above the bent steel pipe 1. The fixed air inlet pipe 4 is connected to an air pump. The sealing air cavity 6 is rotated so that a group of L-shaped elbows 9 and sponge wipers 10 are inserted into the unclosed gap above the bent steel pipe 1. The air pump conveys air through the fixed air inlet pipe 4, the disc air cavity 5, the air outlet holes 501, the through holes 601 and the L-shaped elbows 9 to blow air into the bent steel pipe 1 towards the upstream side for removing dust. At the same time, the dust is wiped off by the sponge wiper 10. The air conveyed by the L-shaped elbow 9 will also blow air to the sponge wiper 10 through the blowing disc 11 and the air blowing holes 1101 to prevent dust from adhering to the sponge wiper 10.

[0031] After the same sponge wiper 10 is used for a period of time, it is inevitable that there is dust on the surface that has not been removed by blowing. Then rotate the sealing air cavity 6 to stagger the position of the air outlet hole 501 from the current position of the L-shaped elbow 9 so that another group of L-shaped elbows 9 are aligned with the air outlet hole 501. Then continue the steps of blowing dust by the L-shaped elbow 9 and wiping dust by the sponge wiper 10 as in the previous stage. Positioned by the ratchet disc 7 and the spring pawl 8, the sponge wiper 10 that has been moved away can be removed for cleaning, realizing the effect of multiple sponge wipers 10 taking turns to continuously remove dust inside the bent steel pipe 1.

Claims

1. A dust removal device for internal pre-bending of steel pipes, characterized in that: It includes fixed seats (2) on both sides above the bent steel pipe (1). Two said fixed seats (2) are respectively fixedly connected with a fixed shaft (3) and a fixed air inlet pipe (4). One end of the fixed air inlet pipe (4) corresponding to the fixed shaft (3) is fixedly connected with a disc air cavity (5). An air outlet hole (501) is arranged at the bottom of the disc air cavity (5). The surface of the disc air cavity (5) is movably sleeved with a sealed air cavity (6), and the circumferential inner side wall of the sealed air cavity (6) is slidably connected with the circumferential outer side wall of the disc air cavity (5). A ratchet disc (7) is fixedly sleeved on the fixed shaft (3), and a spring pawl (8) which is movably clamped with the ratchet disc (7) is fixedly installed on the side surface of the sealed air cavity (6); A plurality of L-shaped bent pipes (9) which are in the same vertical plane as the bent steel pipe (1) are equidistantly and fixedly connected to the circumferential outer wall of the sealed air cavity (6). A through hole (601) is arranged at the position of the sealed air cavity (6) corresponding to the L-shaped bent pipe (9). A cylindrical sponge scrubber (10) is sleeved on the bent section surface of the L-shaped bent pipe (9) far away from the sealed air cavity (6). The sponge scrubber (10) is movably clamped inside the bent steel pipe (1) from top to bottom, and the air outlet end of the L-shaped bent pipe (9) faces the upstream of the conveying direction of the bent steel pipe (1).

2. The internal dust removal device for pre-bending steel pipes according to claim 1, characterized in that: The sealed air cavity (6) includes a cavity body (602) movably sleeved on the surfaces of the disc air cavity (5) and the fixed air inlet pipe (4) and a cover body (603) corresponding to the spring pawl (8). The cover body (603) is threadedly connected with the cavity body (602).

3. The internal dust removal device for pre-bending steel pipes according to claim 2, characterized in that: A sealing rubber ring (604) is arranged at the position of the cavity body (602) corresponding to the fixed air inlet pipe (4).

4. The internal dust removal device for pre-bending steel pipes according to claim 2, characterized in that: A positioning slot is arranged at the position of the cover body (603) corresponding to the fixed shaft (3), and anti-slip threads for screwing are arranged on the circumference of the cover body (603).

5. The internal dust removal device for pre-bending steel pipes according to claim 1, characterized in that: The number of the L-shaped bent pipes (9) is not less than two, and the L-shaped bent pipes (9) are rotationally symmetrically distributed on the circumference of the sealed air cavity (6), and the number of the L-shaped bent pipes (9) corresponds to the number of the card slots on the ratchet disc (7).

6. The internal dust removal device for pre-bending steel pipes according to claim 1, characterized in that: The sponge scrubber (10) and the part of the L-shaped bent pipe (9) corresponding to the sponge scrubber (10) are coaxially arranged with the bent steel pipe (1), and the sponge scrubber (10) is in interference fit with the bent steel pipe (1).

7. The internal dust removal device for pre-bending steel pipes according to claim 1, characterized in that: A blowing disc (11) and a positioning disc (12) are fixedly connected to the L-shaped bent pipe (9). The blowing disc (11) and the positioning disc (12) are respectively located at the downstream and upstream ends of the sponge scrubber (10) corresponding to the conveying direction of the bent steel pipe (1), and the air blowing holes (1101) of the blowing disc (11) are arranged corresponding to the sponge scrubber (10). Air inlet holes (901) are arranged at the positions of the L-shaped bent pipe (9) corresponding to the blowing disc (11) and the sponge scrubber (10).

8. The internal dust removal device for pre-bending steel pipes according to claim 7, characterized in that: The caliber of the air inlet hole (901) corresponding to the blowing disc (11) is larger than the caliber of the air inlet hole (901) corresponding to the sponge scrubber (10).

9. The internal dust removal device for pre-bending of steel pipes according to claim 7, characterized in that: A spiral groove (1001) is arranged on the circumferential outer wall of the sponge scrubber (10).

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