An apparatus for polishing the outer surface of a seamless steel pipe
Patent Information
- Application Number
- CN202522649850.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-15
AI Technical Summary
Existing seamless steel pipe grinding equipment is inefficient in dust control, and the dust is easily dispersed, endangering the health of operators and accelerating equipment wear.
A grinding device including a dust collection device and an adjustment device was designed. The dust collection device uses a suction pump to create negative pressure to adsorb dust, and combines a curved guide plate and a filter screen to collect the dust. The adjustment device adapts to steel pipes of different diameters through a worm gear structure, so as to achieve efficient grinding and dust collection.
It achieves efficient dust collection, reduces dust concentration in the working environment, protects the health of operators, extends equipment life, and eliminates the need to change clamps to adapt to steel pipes of different diameters.
Smart Images
Figure CN224927583U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seamless steel pipe production technology, and specifically to a device for grinding the outer surface of seamless steel pipes. Background Technology
[0002] Seamless steel pipes are widely used in petroleum, chemical, and machinery manufacturing industries. Their surface quality directly affects the accuracy of subsequent processing and the safety of use. Therefore, grinding is a key process in the production and processing of seamless steel pipes.
[0003] In the prior art, such as Chinese Patent No. CN222726333U, a grinding device for rust removal of steel pipes relates to the field of steel pipe rust removal technology. It includes a rotating drive assembly for fixing the steel pipe and a pair of laterally arranged grinding assemblies with adjustable spacing. The rotating drive assembly has a drive structure for driving the steel pipe to rotate circumferentially. The rotating drive assembly has the center of the two grinding assemblies. The rotating drive assembly can move longitudinally relative to the grinding assemblies. The grinding assemblies include positioning wheels and grinding wheels corresponding to the upper and lower surfaces of the steel pipe, respectively, and the distance between them is adjustable. The technical advantages of this application are: the lateral position of the steel pipe is fixed by the rotating drive assembly; the grinding assemblies are moved laterally to achieve step-by-step grinding along the length of the steel pipe; the circumferential grinding of the steel pipe at that position is achieved by controlling the circumferential rotation of the steel pipe by the rotating drive assembly; and the outer circumferential surface of the grinding wheel is set as the grinding material, and the V-shaped contour can increase the grinding contact area between it and the steel pipe.
[0004] The above solutions have the advantages mentioned above, but their disadvantages are that a large amount of dust is generated during the steel pipe grinding process. The above solutions do not treat the dust, and the dust removal structure of traditional equipment is not reasonably designed. They mostly use simple exhaust methods, resulting in low dust collection efficiency. The large amount of dust generated during grinding is easily dispersed in the working environment. On the one hand, it can be inhaled by operators, which will harm their health; on the other hand, the dust will adhere to the equipment parts, which will aggravate the wear of the parts and shorten the service life of the equipment. Utility Model Content
[0005] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a grinding device for the outer surface of seamless steel pipes, comprising: a base, an adjusting device fixedly connected to the top of the base, a dust collection device disposed outside the adjusting device, and suction pumps symmetrically fixedly connected to the outer wall of the dust collection device; the dust collection device includes a dust collection chamber, a grinding machine fixedly connected to the top of the inner wall of the dust collection chamber, dust inlets symmetrically opened at the top of the inner wall of the dust collection chamber, air channels symmetrically opened on the inner wall of the dust collection chamber, and a filter screen fixedly connected to the inner wall of the dust collection chamber.
[0006] Preferably, the bottom end of the dust collection chamber is fixedly connected to the outer wall of the base, the air channel is in communication with the dust inlet, the outer wall of the dust collection chamber is fixedly connected to the outer wall of the suction pump, and the suction pump is located outside the filter screen. When the suction pump is activated, the dust dispersed in the air forms a negative pressure environment in the air channel inside the dust collection chamber to generate suction. Under the action of negative pressure, the dust generated by grinding enters the air channel inside the dust collection chamber through the symmetrically opened dust inlets at the top of the inner wall of the dust collection chamber.
[0007] Preferably, a dust collection bin is slidably connected to the inner wall of the bottom of the dust collection bin, and a curved guide plate is provided at the top of the dust collection bin. The outer wall of the curved guide plate is fixedly connected to the inner wall of the dust collection bin. Dust that falls naturally during grinding falls directly into the bottom of the dust collection bin and then into the interior of the dust collection bin through the curved guide plate. The curved structure prevents the falling dust from escaping. After the grinding operation is completed, the dust collection bin can be removed from the dust collection bin for centralized cleaning of the collected dust.
[0008] Preferably, the adjusting device includes a limiting handle, with a rotating rod symmetrically rotatably connected to the inner wall of the limiting handle, a guide wheel fixedly connected to the outer wall of the rotating rod, and a limiting rod symmetrically slidably connected to the inner wall of the limiting handle. The operator places the seamless steel pipe between the guide wheels of the two rotating rods, with the guide wheels fixed to the outer wall of the rotating rod. The rotating rod is rotatably connected to the limiting handle and can rotate during the grinding process of the steel pipe.
[0009] Preferably, a drive frame is rotatably connected to the outer wall of the rotating rod, and an adjusting screw is threadedly connected to the inner wall of the drive frame. A worm wheel is fixedly connected to the outer wall of the adjusting screw, and the worm wheel meshes with a worm. Rotating the worm, which is rotatably connected to the outer wall of the base, causes the worm to mesh with the worm wheel for transmission. The worm wheel drives the adjusting screw, which is fixed to it, to rotate. The adjusting screw is threadedly connected to the inner wall of the drive frame. When the screw rotates, the drive frame moves along the axial direction of the screw. This, in turn, causes the limiting handle to slide with the limiting rod as a guide, ultimately adjusting the height of the two sets of guide wheels. Thus, according to the different diameters of the steel pipe, the height is adjusted so that the steel pipe is always located below the grinder in the dust collection device.
[0010] Preferably, the outer wall of the limiting rod is fixedly connected to the outer wall of the base, the bottom end of the adjusting screw is rotatably connected to the inner wall of the base, and the worm gear is rotatably connected to the outer wall of the base through a rotating shaft.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. This utility model, by setting an adjustment device, drives the adjusting screw through a worm gear and worm wheel to drive the guide wheel to adjust the height, which can be adapted to seamless steel pipes of different diameters. There is no need to change the special fixture, reducing the complexity of operation. During grinding, the steel pipe rotates flexibly with the rotating rod. With the help of manual axial movement and the rotation of the grinding machine, the outer surface can be continuously and uniformly processed, efficiently removing defects such as oxide scale and burrs, and avoiding local over-grinding or omission.
[0013] 2. This utility model incorporates a dust collection device. The suction pump creates negative pressure within the dust collection chamber, which, combined with the dust inlet and air passage, quickly adsorbs grinding dust and directs it into the dust collection chamber. A curved guide plate prevents dust from escaping, and a filter screen blocks dust from entering the suction pump, providing double protection for dust collection. The dust collection chamber is removable for easy cleaning, reducing the amount of dust in the air and lowering the risk of inhalation for operators. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the structure of the adjusting device of this utility model;
[0016] Figure 3 This is a schematic diagram of the dust collection device of this utility model;
[0017] Figure 4 This is a schematic diagram of the internal structure of the dust collection chamber of this utility model.
[0018] In the diagram: 1. Base; 2. Adjustment device; 21. Limit handle; 22. Limit rod; 23. Rotating rod; 24. Guide wheel; 25. Drive frame; 26. Adjustment screw; 27. Worm gear; 28. Worm; 3. Dust collection device; 31. Dust collection bin; 32. Grinding machine; 33. Dust collection bin; 34. Dust inlet; 35. Filter screen; 36. Air passage; 37. Curved guide plate; 4. Suction pump. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.
[0020] Example:
[0021] Please see Figure 1 - Figure 4This utility model provides a technical solution: a device for grinding the outer surface of seamless steel pipes, comprising: a base 1, an adjusting device 2 fixedly connected to the top of the base 1, a dust collection device 3 disposed outside the adjusting device 2, and a suction pump 4 symmetrically fixedly connected to the outer wall of the dust collection device 3; the dust collection device 3 includes a dust collection chamber 31, a grinding machine 32 fixedly connected to the top of the inner wall of the dust collection chamber 31, dust inlets 34 symmetrically opened at the top of the inner wall of the dust collection chamber 31, air channels 36 symmetrically opened on the inner wall of the dust collection chamber 31, and a filter screen 35 fixedly connected to the inner wall of the dust collection chamber 31.
[0022] The bottom of the dust collection chamber 31 is fixedly connected to the outer wall of the base 1, the air channel 36 is connected to the dust inlet 34, the outer wall of the dust collection chamber 31 is fixedly connected to the outer wall of the suction pump 4, and the suction pump 4 is located outside the filter screen 35.
[0023] A dust collection bin 33 is slidably connected to the inner wall of the bottom end of the dust collection bin 31. A curved guide plate 37 is provided at the top of the dust collection bin 33. The outer wall of the curved guide plate 37 is fixedly connected to the inner wall of the dust collection bin 31.
[0024] The adjusting device 2 includes a limiting handle 21, a rotating rod 23 is symmetrically rotatably connected to the inner wall of the limiting handle 21, a guide wheel 24 is fixedly connected to the outer wall of the rotating rod 23, and a limiting rod 22 is symmetrically slidably connected to the inner wall of the limiting handle 21.
[0025] The outer wall of the rotating rod 23 is rotatably connected to the drive frame 25, the inner wall of the drive frame 25 is threadedly connected to the adjusting screw 26, the outer wall of the adjusting screw 26 is fixedly connected to the worm gear 27, and the worm gear 27 is meshed with the worm 28.
[0026] The outer wall of the limiting rod 22 is fixedly connected to the outer wall of the base 1, the bottom end of the adjusting screw 26 is rotatably connected to the inner wall of the base 1, and the worm gear 28 is rotatably connected to the outer wall of the base 1 through a rotating shaft.
[0027] Working principle:
[0028] During use, the operator places the seamless steel pipe between the guide wheels 24 of the two rotating rods 23. The guide wheels 24 are fixed to the outer wall of the rotating rods 23. The rotating rods 23 are rotatably connected to the limiting handle 21 and can rotate during the grinding process of the steel pipe. The rotating rods 23 are rotatably connected to the outer wall of the base 1. The worm gear 28 meshes with the worm wheel 27 for transmission. The worm wheel 27 drives the adjusting screw 26 fixed to it to rotate. The adjusting screw 26 is threadedly connected to the inner wall of the drive frame 25. When the screw rotates, the drive frame 25 moves along the screw axis. The drive frame 25 is also rotatably connected to the rotating rods 23, which in turn drives the limiting handle 21 to slide with the limiting rod 22 as a guide. Finally, the height of the two sets of guide wheels 24 is adjusted so that the height of the steel pipe is always below the grinding machine 32 in the dust collection device 3, depending on the diameter of the steel pipe.
[0029] After the seamless steel pipe is clamped by the adjusting device 2 and adjusted to a suitable height, the grinding machine 32 is started. The grinding head of the grinding machine 32 contacts the outer surface of the seamless steel pipe. The seamless steel pipe can be moved axially with external manual assistance. In conjunction with the rotation of the grinding head on the grinding machine 32, the outer surface of the steel pipe is continuously and uniformly ground to remove defects such as oxide scale and burrs.
[0030] The suction pump 4 is started, which creates a negative pressure environment in the air passage 36 inside the dust collection chamber 31 to generate suction. Under the action of negative pressure, the dust generated by grinding enters the air passage 36 inside the dust collection chamber 31 through the dust inlet 34 symmetrically opened at the top of the inner wall of the dust collection chamber 31, and falls into the dust collection chamber 33 under the action of gravity. The filter screen 35 prevents the dust from entering the suction pump 4, while the dust that falls naturally during grinding falls directly into the bottom of the dust collection chamber 31 and falls into the interior of the dust collection chamber 33 through the curved guide plate 37. The curved structure can prevent the falling dust from escaping. After the grinding operation is completed, the dust collection chamber 33 can be pulled out from the dust collection chamber 31 and the collected dust can be cleaned up.
[0031] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A device for grinding the outer surface of seamless steel pipes, characterized in that, include: A base (1) is fixedly connected to an adjustment device (2) at its top end. A dust collection device (3) is provided on the outside of the adjustment device (2). A suction pump (4) is symmetrically fixedly connected to the outer wall of the dust collection device (3). The dust collection device (3) includes a dust collection chamber (31). A grinder (32) is fixedly connected to the top end of the inner wall of the dust collection chamber (31). Dust inlets (34) are symmetrically opened at the top end of the inner wall of the dust collection chamber (31). Air channels (36) are symmetrically opened on the inner wall of the dust collection chamber (31). A filter screen (35) is fixedly connected to the inner wall of the dust collection chamber (31).
2. The device for grinding the outer surface of seamless steel pipes according to claim 1, characterized in that: The bottom end of the dust collection chamber (31) is fixedly connected to the outer wall of the base (1), the air channel (36) is connected to the dust inlet (34), the outer wall of the dust collection chamber (31) is fixedly connected to the outer wall of the suction pump (4), and the suction pump (4) is located outside the filter screen (35).
3. The device for grinding the outer surface of seamless steel pipes according to claim 2, characterized in that: The bottom inner wall of the dust collection chamber (31) is slidably connected to a dust collection chamber (33), and the top of the dust collection chamber (33) is provided with a curved guide plate (37). The outer wall of the curved guide plate (37) is fixedly connected to the inner wall of the dust collection chamber (31).
4. The device for grinding the outer surface of seamless steel pipes according to claim 1, characterized in that: The adjusting device (2) includes a limiting handle (21), a rotating rod (23) is symmetrically rotatably connected to the inner wall of the limiting handle (21), a guide wheel (24) is fixedly connected to the outer wall of the rotating rod (23), and a limiting rod (22) is symmetrically slidably connected to the inner wall of the limiting handle (21).
5. The device for grinding the outer surface of seamless steel pipes according to claim 4, characterized in that: The outer wall of the rotating rod (23) is rotatably connected to a drive frame (25), the inner wall of the drive frame (25) is threadedly connected to an adjusting screw (26), the outer wall of the adjusting screw (26) is fixedly connected to a worm wheel (27), and the worm wheel (27) is meshed with a worm (28).
6. The device for grinding the outer surface of seamless steel pipes according to claim 5, characterized in that: The outer wall of the limiting rod (22) is fixedly connected to the outer wall of the base (1), the bottom end of the adjusting screw (26) is rotatably connected to the inner wall of the base (1), and the worm gear (28) is rotatably connected to the outer wall of the base (1) through a rotating shaft.