Internal grinding and dust blowing device for steel pipe

Abstract

The utility model discloses a steel pipe internal grinding and dust blowing device, which relates to the technical field of steel pipe manufacturing, and comprises a machine base, a driving motor arranged on the machine base, an air guide pipe and a second grinding wheel, the output end of the driving motor is provided with a first grinding wheel through a transmission shaft, and the air guide pipe is sleeved on the outer side of the transmission shaft. The second coping grinding wheel is coaxially fixed to the transmission shaft and located on the side, away from the driving motor, of the first coping grinding wheel, oxide skin on the inner surface of the steel pipe is peeled off through the second coping grinding wheel, then the steel pipe wall with the oxide skin peeled off is coped through the first coping grinding wheel, and during coping, the inner surface of the steel pipe is subjected to coping through the second coping grinding wheel; the high-pressure fan is used for blowing high-pressure air flow into the air guide pipe from the air inlet, the high-pressure air flow is blown out from the air outlet, chippings generated by grinding are blown out, the situation that the chippings are accumulated on the inner wall of the steel pipe after falling off, the grinding effect of the first grinding wheel on the inner wall of the steel pipe is reduced is avoided, and grinding and cleaning integration is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe manufacturing, in particular to a steel pipe internal grinding and dust blowing device. Background Art

[0002] During the internal grinding process of the steel pipe, a motor is used to drive the grinding rod equipped with a grinding wheel to rotate in the inner hole of the steel pipe, and the inner surface of the steel pipe is ground by the grinding wheel.

[0003] However, during the hot rolling or heat treatment process, a layer of iron oxide will form on the inner surface of the steel pipe. The initial stage of grinding with the grinding wheel is mainly to grind the iron oxide. Only after the iron oxide is ground off can the steel pipe substrate be contacted. Grinding the steel pipe substrate separately is cumbersome. In addition, during the grinding process, oxides, dust, etc. generated by the grinding of the steel pipe accumulate on the inner wall of the steel pipe to form powder lubrication, which reduces the grinding efficiency of the grinding wheel. In the prior art, in order to clean the oxides and dust on the inner surface of the steel pipe after grinding, the steel pipe needs to be hoisted to the soot blowing area after grinding, which increases the steel pipe hoisting process. Therefore, a steel pipe internal grinding and dust blowing device is proposed to improve the above problems. Utility Model Content

[0004] The purpose of the present application is to provide a steel pipe internal grinding and dust blowing device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a steel pipe internal grinding and dust blowing device, comprising a machine base and a driving motor installed on the machine base, wherein a first grinding wheel is installed at the output end of the driving motor through a transmission shaft, and further comprising:

[0006] An air duct is sleeved on the outside of the transmission shaft, one end of the air duct is mounted on the machine base, the other end of the air duct extends to the first grinding wheel, an air inlet is arranged at one end of the air duct close to the machine base, and the air inlet is connected to the high-pressure fan, and an air outlet is arranged at one end of the air duct close to the first grinding wheel;

[0007] The second grinding wheel is coaxially fixed on the transmission shaft and is located at a side of the first grinding wheel away from the driving motor.

[0008] As a further supplement to the present solution, the air outlet is arranged as an inclined hole, and the outer opening of the air outlet is inclined toward one side of the first grinding wheel.

[0009] As a further supplement to this solution, the circumferential side end of the second grinding wheel is integrally provided with spikes.

[0010] As a further supplement to the present solution, both ends of the second grinding wheel along the central axis direction are integrally provided with counterweight blocks, and the counterweight blocks are conical.

[0011] As a further supplement to this solution, the first grinding wheel and the second grinding wheel both include a grinding wheel body and a plurality of grinding blocks;

[0012] The grinding wheel body is coaxially fixed with the transmission shaft, and a plurality of grinding blocks are equidistantly installed on the circumferential side ends of the grinding wheel body;

[0013] The spikes on the second grinding wheel are located at the end of the grinding block away from the grinding wheel body.

[0014] As a further supplement to this solution, a plurality of slide grooves are equidistantly arranged on the circumferential side ends of the grinding wheel body, a plurality of grinding blocks are slidably installed one by one on the inner sides of the plurality of slide grooves, and elastic connectors are installed between the grinding blocks and the inner bottom ends of the slide grooves.

[0015] In summary, the technical effects and advantages of the utility model are:

[0016] 1. In the utility model, by adding a second grinding wheel and an air guide duct, the oxide scale on the inner surface of the steel pipe is first peeled off by the second grinding wheel, and then the steel pipe wall after the oxide scale is peeled off is ground by the first grinding wheel. At the same time, a high-pressure airflow is blown into the air guide duct from the air inlet by a high-pressure fan, and the high-pressure airflow is blown out from the air outlet to sweep away the debris generated by the grinding, so as to avoid the debris from falling off and accumulating on the inner wall of the steel pipe, thereby reducing the grinding effect of the first grinding wheel on the inner wall of the steel pipe, and realizing integrated grinding and cleaning.

[0017] 2. In the utility model, by providing multiple grinding blocks, elastic connectors and slide grooves, multiple grinding blocks are simultaneously fitted to the inner wall of the steel pipe, and the central rotation axis of the grinding blocks coincides with the axis of the steel pipe, thereby achieving a one-time comprehensive grinding of the circumferential inner wall of the steel pipe, accelerating the grinding speed, and the setting of the elastic connector in conjunction with the slide groove can enable the first grinding wheel and the second grinding wheel to adapt to steel pipes of different diameters, and achieve a better grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure in the prior art;

[0020] Figure 2 This is a schematic diagram of the overall structure of this embodiment 1;

[0021] Figure 3 This is a schematic diagram of the overall structure of Example 2;

[0022] Figure 4 is a schematic diagram of the three-dimensional structure of the first grinding wheel or the second grinding wheel in this embodiment 2;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the first grinding wheel or the second grinding wheel in this embodiment 2.

[0024] In the figure: 1, machine base; 2, driving motor; 3, transmission shaft; 4, first grinding wheel; 5, air guide duct; 501, air inlet; 502, air outlet; 6, second grinding wheel; 61, spike; 601, counterweight; 461, grinding wheel body; 4601, slide; 462, grinding block; 463, elastic connecting piece. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1: Figure 2 FIG. 1 shows a steel pipe inner grinding and dust blowing device, comprising a machine base 1 and a driving motor 2 mounted on the machine base 1. The output end of the driving motor 2 is mounted with a first grinding wheel 4 through a transmission shaft 3. The driving motor 2 drives the transmission shaft 3 to rotate with the first grinding wheel 4 to grind the inner wall of the steel pipe. The above are all prior arts, such as Figure 1 shown.

[0027] In addition, it also includes an air duct 5, which is sleeved on the outside of the transmission shaft 3, one end of the air duct 5 is installed on the machine base 1, and the other end of the air duct 5 extends to the first grinding wheel 4. An air inlet 501 is arranged at the end of the air duct 5 close to the machine base 1, and the air inlet 501 is connected to the high-pressure fan, and an air outlet 502 is arranged at the end of the air duct 5 close to the first grinding wheel 4. During grinding, a high-pressure airflow is blown into the air duct 5 from the air inlet 501 by the high-pressure fan, and the high-pressure airflow is blown out from the air outlet 502 to sweep away the debris generated by grinding, so as to avoid the debris from falling off and accumulating on the inner wall of the steel pipe, thereby reducing the grinding effect of the first grinding wheel 4 on the inner wall of the steel pipe, and realizing integrated grinding and cleaning.

[0028] The air outlet 502 is configured as an inclined hole, and the outer opening of the air outlet 502 is inclined toward one side of the first grinding wheel 4 to improve the blowing effect.

[0029] In addition, it also includes a second grinding wheel 6, which is coaxially fixed on the transmission shaft 3, and the second grinding wheel 6 is located on the side of the first grinding wheel 4 away from the driving motor 2. The second grinding wheel 6 is used to first peel off the oxide scale on the inner surface of the steel pipe, and then the first grinding wheel 4 is used to grind the steel pipe wall after the oxide scale is peeled off, thereby improving the grinding effect.

[0030] The circumferential side end of the second grinding wheel 6 is integrally provided with spikes 61, which can roll and loosen the oxide scale on the inner surface of the steel pipe or make the oxide scale fall off.

[0031] The second grinding wheel 6 is provided with integrated counterweights 601 at both ends along the central axis, and the counterweights 601 are conical, thereby increasing the pressure between the middle spike 61 and the steel pipe surface and improving the crushing effect of the oxide scale on the inner surface of the steel pipe.

[0032] The working principle of this embodiment is as follows: the driving motor 2 drives the transmission shaft 3 to rotate with the first grinding wheel 4 and the second grinding wheel 6, and the second grinding wheel 6 is used to first peel off the oxide scale on the inner surface of the steel pipe, and then the first grinding wheel 4 is used to grind the steel pipe wall after the oxide scale is peeled off. During the grinding, a high-pressure airflow is blown into the air guide 5 from the air inlet 501 by a high-pressure fan, and the high-pressure airflow is blown out from the air outlet 502 to blow away the debris generated by the grinding, so as to avoid the debris from accumulating on the inner wall of the steel pipe after falling off, thereby reducing the grinding effect of the first grinding wheel 4 on the inner wall of the steel pipe, and realizing integrated grinding and cleaning.

[0033] Example 2: Figure 3-5 It is shown that, different from Example 1, the first grinding wheel 4 and the second grinding wheel 6 both include a grinding wheel body 461 and a plurality of grinding blocks 462, the grinding wheel body 461 is coaxially fixed to the transmission shaft 3, and the plurality of grinding blocks 462 are equidistantly installed on the circumferential side ends of the grinding wheel body 461, and the spikes 61 on the second grinding wheel 6 are located at the end of the grinding block 462 away from the grinding wheel body 461 (not shown in the figure); the plurality of grinding blocks 462 are simultaneously fitted to the inner wall of the steel pipe. Compared with Example 1, in this embodiment, the central rotation axis of the grinding block 462 coincides with the axis of the steel pipe, thereby achieving a one-time comprehensive grinding of the circumferential inner wall of the steel pipe and accelerating the grinding speed.

[0034] Furthermore, a plurality of slide grooves 4601 are equidistantly arranged on the circumferential side ends of the grinding wheel body 461, a plurality of grinding blocks 462 are slidably installed one by one on the inner sides of the plurality of slide grooves 4601, and elastic connectors 463 are installed between the grinding blocks 462 and the inner bottom ends of the slide grooves 4601; through the provision of the elastic connector 463 and the slide grooves 4601, the first grinding wheel 4 and the second grinding wheel 6 can adapt to steel pipes of different diameters, and the grinding effect is better.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A steel pipe internal grinding and dust blowing device, comprising a machine base (1) and a drive motor (2) mounted on the machine base (1), wherein a first grinding wheel (4) is mounted on the output end of the drive motor (2) via a transmission shaft (3), and characterized in that: Also includes: An air guide duct (5), the air guide duct (5) being sleeved on the outer side of the transmission shaft (3), one end of the air guide duct (5) being mounted on the machine base (1), the other end of the air guide duct (5) extending to the first grinding wheel (4), an air inlet (501) being arranged at one end of the air guide duct (5) close to the machine base (1), and the air inlet (501) being connected to a high-pressure blower, and an air outlet (502) being arranged at one end of the air guide duct (5) close to the first grinding wheel (4); A second grinding wheel (6), wherein the second grinding wheel (6) is coaxially fixed on the transmission shaft (3), and the second grinding wheel (6) is located on a side of the first grinding wheel (4) away from the drive motor (2).

2. The steel pipe internal grinding and dust blowing device according to claim 1, characterized in that: The air outlet (502) is arranged as an inclined hole, and an outer opening of the air outlet (502) is arranged to be inclined toward one side of the first grinding wheel (4).

3. The steel pipe internal grinding and dust blowing device according to claim 1, characterized in that: The circumferential side end of the second grinding wheel (6) is integrally provided with a spike (61).

4. The steel pipe internal grinding and dust blowing device according to claim 1, characterized in that: The second grinding wheel (6) is integrally provided with counterweight blocks (601) at both ends along the central axis direction thereof, and the counterweight blocks (601) are conical.

5. The steel pipe internal grinding and dust blowing device according to claim 3, characterized in that: The first grinding wheel (4) and the second grinding wheel (6) both comprise a grinding wheel body (461) and a plurality of grinding blocks (462); The grinding wheel body (461) is coaxially fixed to the transmission shaft (3), and a plurality of grinding blocks (462) are equidistantly mounted on the circumferential side ends of the grinding wheel body (461); The spike (61) on the second grinding wheel (6) is located at the end of the grinding block (462) away from the grinding wheel body (461).

6. The steel pipe internal grinding and dust blowing device according to claim 5, characterized in that: A plurality of slide grooves (4601) are equidistantly arranged on the circumferential side ends of the grinding wheel body (461); the plurality of grinding blocks (462) are slidably installed one by one on the inner sides of the plurality of slide grooves (4601); and elastic connecting pieces (463) are installed between the grinding blocks (462) and the inner bottom ends of the slide grooves (4601).

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