Surface machining and grinding device for steel-in-steel directly-buried steam thermal insulation pipe

Abstract

The invention discloses a surface machining and grinding device for a steel-in-steel directly-buried steam thermal insulation pipe, and relates to the field of steel-in-steel directly-buried steam thermal insulation pipe machining.The surface machining and grinding device comprises a workbench, a mounting plate is arranged on the workbench, and positioning and limiting units are mounted on the surfaces of the opposite sides of the workbench and the mounting plate correspondingly; a grinding mechanism corresponding to the positioning and limiting unit is arranged on the workbench; the positioning limiting unit comprises a supporting disc rotationally connected to the surface of the side, opposite to the mounting plate, of the workbench. According to the surface machining and grinding device for the steel-in-steel directly-buried steam heat preservation pipe, two sets of multiple positioning discs with the diameter values sequentially reduced are arranged, and positioning rods and driving units are arranged in the positioning discs, so that an outer protection steel pipe section can be vertically positioned and fixed when being subjected to surface grinding machining; and meanwhile, the requirement for grinding outer protection steel pipe sections in different size ranges can be met, and the applicability of the grinding device is higher.

Description

Technical Field

[0001] The present invention relates to the processing technology of steel-sheathed directly buried steam insulation pipes, and specifically relates to a surface processing grinding device for steel-sheathed directly buried steam insulation pipes. Background Art

[0002] A steel-sheathed directly buried steam insulation pipe is a prefabricated directly buried composite pipe used for transporting hot media, which is composed of an outer protective steel pipe, steel pipe anti-corrosion, a polyurethane foam insulation layer, and an inner working steel pipe.

[0003] The outer protective steel pipe is the external protective layer of the steel-sheathed directly buried steam insulation pipe. For the convenience of processing, transportation, and cost reduction, it is generally formed by welding several shorter steel pipe segments. At the same time, in order to ensure the protective effect of the outer protective steel pipe as the outer protective layer, it needs to undergo a series of processing treatments to improve the strength and chemical properties of the outer protective steel pipe itself, so that it is not easily damaged after being buried in the soil layer.

[0004] Grinding is a common surface treatment method for the outer protective steel pipe. When grinding it, it is transversely clamped and driven to rotate, and then a grinding part is used to move synchronously to grind it. However, in actual application, due to the large number of specifications of the outer protective steel pipe and the large span of the inner diameter size values, when grinding outer protective steel pipes with different inner diameter sizes, it is necessary to frequently replace grinding equipment of other specifications, resulting in insufficient adaptability of the grinding equipment in actual application, thereby increasing the production and processing cost of the outer protective steel pipe in disguise. Summary of the Invention

[0005] The purpose of the present invention is to provide a surface processing grinding device for steel-sheathed directly buried steam insulation pipes to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A surface processing grinding device for steel-sheathed directly buried steam insulation pipes, including a workbench, an installation plate is arranged on the workbench, positioning and restricting units are installed on the opposite surfaces of the workbench and the installation plate, and a grinding mechanism corresponding to the positioning and restricting units is arranged on the workbench;

[0007] The positioning and restricting unit includes support disks respectively rotatably connected to the opposite surfaces of the workbench and the installation plate. The support disk rotatably connected to the workbench is driven by a motor. Multiple groups of positioning disks are sequentially arranged on the opposite surfaces of the two support disks. The diameter values of the upper and lower positioning disks gradually decrease from both ends to the middle. Annularly equally spaced straight grooves are opened inside all the positioning disks. A positioning rod is slidably connected to the inner side surface of the straight groove. A driving unit is arranged outside the positioning rod. The driving unit is used to drive all the positioning rods to linearly move synchronously along the inner side surface of the straight groove.

[0008] Further, the driving unit includes a driving groove formed inside the positioning disk. A communicating groove is formed between the inner wall of the driving groove and the straight groove. A short column slidably connected to the inner side surface of the communicating groove is fixedly connected to the surface of the positioning rod. A driving disk is rotatably connected to the inner side surface of the driving groove. An arc-shaped push plate corresponding to the short column is fixedly installed on the outer side surface of the driving disk. When the driving disk rotates to drive the arc-shaped push plate to rotate, the arc-shaped push plate pushes the short column to linearly move along the inner side surface of the communicating groove.

[0009] Further, a return spring is fixedly connected between the positioning rod and the inner wall of the straight groove. A gear is coaxially and fixedly connected to the surface of the driving disk close to the support disk. A control cylinder is fixedly installed on the inner wall of the driving groove close to the support disk. A rack is fixedly connected to the telescopic end of the control cylinder.

[0010] Further, the rack is slidably connected to the inner side surface of the driving groove, and the rack meshes with the gear.

[0011] Further, the driving disks in all the positioning disks on the same side are coaxially and fixedly connected.

[0012] Further, a support frame is fixedly installed on the surface of the workbench. A lifting groove is formed on the surface of the support frame. A lifting screw rod is rotatably connected to the inner side surface of the lifting groove. The lifting screw rod is driven by a motor. The mounting plate is threadedly connected to the lifting screw rod and is slidably connected to the inner side surface of the lifting groove.

[0013] Further, the grinding mechanism includes a mounting frame fixedly installed on the surface of the workbench. An adjustment groove is formed on the surface of the mounting frame. An adjustment screw rod is rotatably connected to the inner side surface of the adjustment groove. A bracket slidably connected to the inner side surface of the adjustment groove is threadedly connected to the outside of the adjustment screw rod. An extension frame is slidably connected to one side of the bracket close to the positioning disk. A grinding wheel is installed on the extension frame. The grinding wheel is driven by a motor. An adjustment cylinder is installed on the surface of the bracket. The telescopic end of the adjustment cylinder is fixedly connected to the extension frame.

[0014] Further, a cover shell is installed on the surface of the workbench. Opening and closing doors are symmetrically arranged on both sides of the cover shell. A plurality of air holes are formed on the surface of the workbench. A through groove is formed on the top of the cover shell. An air collecting cavity communicating with the plurality of air holes is formed inside the workbench. A processing groove is formed inside the workbench. An induced draft fan, a dust removal box and a protective grating are sequentially installed inside the processing groove from the inside to the outside.

[0015] Further, the side of the processing groove close to the air collecting cavity is communicated with the air collecting cavity. The induced draft fan draws the gas inside the cover shell to flow downward, and after passing through the dust removal box, it is discharged to the outside of the workbench from the end of the processing groove.

[0016] Compared with the prior art, a surface processing and grinding device for a steel-sheathed steel directly buried steam heat preservation pipe provided by the present invention has the following beneficial effects:

[0017] 1. For the surface processing and grinding device of the steel-sheathed steel directly buried steam heat preservation pipe, by setting two groups of multiple positioning disks with gradually decreasing diameter values, and arranging positioning rods and driving units inside the positioning disks, when performing surface grinding processing on the outer protection steel pipe section, it can perform vertical positioning and fixation on it, and at the same time can meet the needs of grinding processing of outer protection steel pipe sections in different size ranges, making the grinding device more applicable.

[0018] 2. For the surface processing and grinding device of the steel-sheathed steel directly buried steam heat preservation pipe, through the mutual cooperation between the cover shell, air holes, through grooves, air collecting cavity, induced draft fan and dust removal box, the air flow inside the cover shell can be pulled downward during the grinding process and discharged to the external environment after passing through the dust removal box, so that the dust during the grinding process cannot escape and will not pollute the working environment of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic structural diagram of the whole (when the opening and closing door is closed) provided by the embodiment of the present invention;

[0021] Figure 2 Schematic structural diagram of the whole (when the opening and closing door is opened) provided by the embodiment of the present invention;

[0022] Figure 3 Schematic structural diagram of the whole (excluding the cover shell) provided by the embodiment of the present invention;

[0023] Figure 4 Schematic structural diagram of the support disk and the positioning disk provided by the embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the internal structure of the driving groove provided by the embodiment of the present invention;

[0025] Figure 6 Schematic cross-sectional view of the positioning disk provided by the embodiment of the present invention;

[0026] Figure 7 Schematic longitudinal cross-sectional view of the workbench provided by the embodiment of the present invention;

[0027] Figure 8 Schematic diagram of the enlarged structure at position A in Figure 7 the embodiment provided by the present invention.

[0028] Explanation of reference numerals:

[0029] 1. Workbench; 2. Mounting plate; 21. Support disk; 22. Positioning disk; 23. Straight groove; 24. Positioning rod; 25. Support frame; 26. Lifting groove; 27. Lifting screw; 3. Driving groove; 31. Connecting groove; 32. Short column; 33. Driving disk; 34. Arc-shaped pushing plate; 35. Return spring; 36. Gear; 37. Control cylinder; 38. Rack; 4. Mounting frame; 41. Adjusting groove; 42. Adjusting screw; 43. Bracket; 44. Extension frame; 45. Grinding wheel; 46. Adjusting cylinder; 5. Housing; 51. Opening and closing door; 52. Air hole; 53. Through groove; 54. Air collecting cavity; 55. Processing tank; 56. Induced draft fan; 57. Dust removal box; 58. Protective grid plate. Detailed implementation manners

[0030] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Embodiment 1:

[0032] Please refer to Figures 1 - 6 , a surface processing grinding device for a steel-sheathed steel directly buried steam heat preservation pipe, including a workbench 1, a mounting plate 2 is arranged on the workbench 1, positioning and restricting units are installed on the opposite side surfaces of the workbench 1 and the mounting plate 2, and a grinding mechanism corresponding to the positioning and restricting units is arranged on the workbench 1;

[0033] The positioning and restricting unit includes support disks 21 respectively rotatably connected to the opposite side surfaces of the workbench 1 and the mounting plate 2, the support disk 21 rotatably connected to the workbench 1 is driven by a motor, a plurality of groups of positioning disks 22 are sequentially arranged on the opposite side surfaces of the two support disks 21, the diameter values of the upper and lower positioning disks 22 gradually decrease from both ends to the middle, annular straight grooves 23 are arranged at equal intervals inside all the positioning disks 22, positioning rods 24 are slidably connected to the inner side surfaces of the straight grooves 23, and a driving unit is arranged outside the positioning rods 24, and the driving unit is used to drive all the positioning rods 24 to move linearly along the inner side surfaces of the straight grooves 23 synchronously.

[0034] It should be added that the driving unit includes a driving groove 3 opened inside the positioning disk 22. A communicating groove 31 is opened between the inner wall of the driving groove 3 and the straight groove 23. A short column 32 slidably connected to the inner side surface of the communicating groove 31 is fixedly connected to the surface of the positioning rod 24. A driving disk 33 is rotatably connected to the inner side surface of the driving groove 3. An arc-shaped push plate 34 corresponding to the short column 32 is fixedly installed on the outer side surface of the driving disk 33. When the driving disk 33 rotates and drives the arc-shaped push plate 34 to rotate, the arc-shaped push plate 34 pushes the short column 32 to move linearly along the inner side surface of the communicating groove 31.

[0035] Furthermore, a return spring 35 is fixedly connected between the positioning rod 24 and the inner wall of the straight groove 23. A gear 36 is coaxially and fixedly connected to the surface of the driving disk 33 close to the support disk 21. A control cylinder 37 is fixedly installed on the inner wall of the driving groove 3 close to the support disk 21. A rack 38 is fixedly connected to the telescopic end of the control cylinder 37. The rack 38 is slidably connected to the inner side surface of the driving groove 3, and the rack 38 meshes with the gear 36.

[0036] In this embodiment, the driving disks 33 in all the positioning disks 22 on the same side are coaxially and fixedly connected. By coaxially fixing all the driving disks 33 on the same side, when the control cylinder 37 arranged in the positioning disk 22 close to the support disk 21 drives the driving disk 33 inside it to rotate, the driving disks 33 in the other positioning disks 22 connected to this positioning disk 22 can rotate synchronously.

[0037] In this embodiment, a support frame 25 is fixedly installed on the surface of the workbench 1. A lifting groove 26 is opened on the surface of the support frame 25. A lifting screw rod 27 is rotatably connected to the inner side surface of the lifting groove 26. The lifting screw rod 27 is driven by a motor. The mounting plate 2 is threadedly connected to the lifting screw rod 27, and the mounting plate 2 is slidably connected to the inner side surface of the lifting groove 26.

[0038] In this embodiment, the grinding mechanism includes a mounting frame 4 fixedly installed on the surface of the workbench 1. An adjustment groove 41 is opened on the surface of the mounting frame 4. An adjustment screw rod 42 is rotatably connected to the inner side surface of the adjustment groove 41. A bracket 43 threadedly connected to the outside of the adjustment screw rod 42 and slidably connected to the inner side surface of the adjustment groove 41 is provided. An extension frame 44 is slidably connected to one side of the bracket 43 close to the positioning disk 22. A grinding wheel 45 is installed on the extension frame 44. The grinding wheel 45 is driven by a motor. An adjustment cylinder 46 is installed on the surface of the bracket 43. The telescopic end of the adjustment cylinder 46 is fixedly connected to the extension frame 44.

[0039] During operation, the operator places the outer protective steel pipe section to be processed on the positioning disc 22, and according to the actual size of its inner diameter, makes it bear on the appropriate positioning disc 22 or on the support disc 21. After it is placed, the control cylinder 37 in the lower positioning disc 22 drives the rack 38 to move. The movement of the rack 38 drives the gear 36 to rotate. The rotation of the gear 36 drives the driving disc 33 inside the positioning disc 22 to rotate. The driving disc 33 drives the other driving discs 33 to rotate synchronously during rotation. The rotation of the driving disc 33 drives the arc-shaped push plate 34 to rotate. During the rotation of the arc-shaped push plate 34, it pushes the short column 32 to move linearly along the inner side of the communication groove 31. The movement of the short column 32 drives the positioning rod 24 to move, so that the end of the positioning rod 24 can extend outside the positioning disc 22 and contact the inner wall of the outer protective steel pipe section. Moreover, with the cooperation of all the positioning rods 24 on the positioning disc 22, not only can the position of the outer protective steel pipe section be corrected, but also its position can be restricted, so that it can be stably fixed on the support disc 21;

[0040] Then, the lifting screw 27 is rotated to drive the mounting plate 2 to move downward, so that the positioning disc 22 on the mounting plate 2 can be embedded into the inner part of the outer protective steel pipe section, and the outer protective steel pipe section is connected and fixed to the upper positioning disc 22 by the above operation method, so that the outer protective steel pipe section can maintain a stable state during the grinding process;

[0041] During the grinding process, the adjusting screw 42 is used to drive the bracket 43 to move in the vertical direction and drive the grinding wheel 45 to move in the vertical direction. Moreover, the adjusting cylinder 46 is used to drive the extension frame 44 to move, so that the distance between the grinding wheel 45 and the outer protective steel pipe section can be adjusted according to actual needs. During this process, the grinding wheel 45 is in a working state, so that the surface of the outer protective steel pipe section can be ground and processed.

[0042] Embodiment 2:

[0043] Please refer to Figures 1 - 2 、 Figures 7 - 8 On the basis of the above embodiment, this embodiment provides a technical solution: A housing 5 is installed on the surface of the workbench 1. Opening and closing doors 51 are symmetrically arranged on both sides of the housing 5. A plurality of air holes 52 are opened on the surface of the workbench 1. A through groove 53 is opened on the top of the housing 5. An air collecting cavity 54 communicating with a plurality of air holes 52 is opened inside the workbench 1. A processing groove 55 is opened inside the workbench 1. An induced draft fan 56, a dust removal box 57 and a protective grid plate 58 are sequentially installed inside the processing groove 55 from the inside to the outside.

[0044] It should be noted that the specific structure of the dust removal box 57 includes air ports penetrating through both sides of itself, and a plurality of filter dust plates are arranged at intervals inside it along the gas flow direction, so that it can effectively filter the powder in the passing air flow.

[0045] It should be added that the side of the treatment tank 55 close to the gas collecting chamber 54 is connected to the gas collecting chamber 54. The induced draft fan 56 draws the gas inside the housing 5 downward, and after passing through the dust removal box 57, it is discharged from the end of the treatment tank 55 to the outside of the workbench 1.

[0046] During the grinding process, the induced draft fan 56 is in the starting state. Thus, under the conduction of the gas collecting chamber 54 and the air holes 52, a relatively large suction force is generated at the air holes 52, and the air flow inside the housing 5 can be drawn downward. The powder generated during the grinding process can flow synchronously with the air flow and be filtered and collected in the dust removal box 57 during the process of passing through the dust removal box 57. It can effectively prevent the powder generated during the grinding process from flying around, thereby effectively ensuring the health and safety of the staff.

[0047] Only some exemplary embodiments of the present invention have been described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A surface processing and grinding device for a steel-jacketed direct-buried steam insulation pipe, comprising a workbench (1), characterized in that: The workbench (1) is provided with a mounting plate (2), a positioning limiting unit is installed on the surface of the workbench (1) facing the mounting plate (2), and a grinding mechanism corresponding to the positioning limiting unit is provided on the workbench (1); The positioning and limiting unit comprises support plates (21) respectively rotatably connected to the surfaces of the workbench (1) and the mounting plate (2) facing each other. The support plates (21) rotatably connected to the workbench (1) are driven by a motor. The surfaces of the two support plates (21) facing each other are provided with a plurality of positioning plates (22) in sequence. The diameters of the upper and lower positioning plates (22) decrease in sequence from the two ends to the middle. The interiors of all the positioning plates (22) are provided with straight grooves (23) equidistantly arranged in an annular shape. The inner side surfaces of the straight grooves (23) are slidably connected with positioning rods (24). The outer side of the positioning rods (24) is provided with a driving unit, and the driving unit is used to drive all the positioning rods (24) to synchronously move linearly along the inner side surfaces of the straight grooves (23).

2. The surface processing and grinding device of a steel jacketed direct buried steam insulation pipe according to claim 1 is characterized in that: The driving unit comprises a driving groove (3) provided inside the positioning plate (22); a connecting groove (31) is provided between the inner wall of the driving groove (3) and the straight groove (23); a short column (32) is fixedly connected to the surface of the positioning rod (24) and is slidably connected to the inner side surface of the connecting groove (31); the inner side surface of the driving groove (3) is rotatably connected to the driving plate (33); an arc-shaped push plate (34) corresponding to the short column (32) is fixedly installed on the outer side surface of the driving plate (33); when the driving plate (33) rotates and drives the arc-shaped push plate (34) to rotate, the arc-shaped push plate (34) pushes the short column (32) to move linearly along the inner side surface of the connecting groove (31).

3. The surface processing and grinding device of a steel jacketed direct buried steam insulation pipe according to claim 2 is characterized in that: A return spring (35) is fixedly connected between the positioning rod (24) and the inner wall of the straight groove (23); a gear (36) is coaxially fixedly connected to the surface of the driving disk (33) close to the supporting disk (21); a control cylinder (37) is fixedly installed on the inner wall of the driving groove (3) close to the supporting disk (21); and a rack (38) is fixedly connected to the telescopic end of the control cylinder (37).

4. The surface processing and grinding device of a steel jacketed direct buried steam insulation pipe according to claim 3 is characterized in that: The rack (38) is slidably connected to the inner side surface of the driving groove (3), and the rack (38) is meshed with the gear (36).

5. The surface processing and grinding device of a steel jacketed direct buried steam insulation pipe according to claim 4 is characterized in that: The driving disks (33) located in all the positioning disks (22) on the same side are coaxially fixedly connected.

6. The surface processing and grinding device of a steel jacketed direct buried steam insulation pipe according to claim 5 is characterized in that: A support frame (25) is fixedly mounted on the surface of the workbench (1), a lifting groove (26) is provided on the surface of the support frame (25), an inner side surface of the lifting groove (26) is rotatably connected with a lifting screw (27), the lifting screw (27) is driven by a motor, the mounting plate (2) is threadedly connected to the lifting screw (27), and the mounting plate (2) is slidably connected to the inner side surface of the lifting groove (26).

7. The surface processing and grinding device of a steel jacketed direct buried steam insulation pipe according to claim 1 is characterized in that: The grinding mechanism comprises a mounting frame (4) fixedly mounted on the surface of a workbench (1), an adjusting groove (41) being provided on the surface of the mounting frame (4), an adjusting screw (42) being rotatably connected to the inner side surface of the adjusting groove (41), an outer thread of the adjusting screw (42) being connected to a bracket (43) slidably connected to the inner side surface of the adjusting groove (41), an extension frame (44) being slidably connected to the side of the bracket (43) close to the positioning plate (22), a grinding wheel (45) being mounted on the extension frame (44), the grinding wheel (45) being driven by a motor, an adjusting cylinder (46) being mounted on the surface of the bracket (43), the telescopic end of the adjusting cylinder (46) being fixedly connected to the extension frame (44).

8. The surface processing and grinding device of a steel-jacketed direct-buried steam insulation pipe according to claim 1 is characterized in that: A cover shell (5) is installed on the surface of the workbench (1), and opening and closing doors (51) are symmetrically arranged on both sides of the cover shell (5). A plurality of air holes (52) are provided on the surface of the workbench (1), and a through groove (53) is provided on the top of the cover shell (5). An air collecting cavity (54) communicating with the plurality of air holes (52) is provided inside the workbench (1). A processing tank (55) is provided inside the workbench (1), and an exhaust fan (56), a dust removal box (57) and a protective grille (58) are installed in sequence from the inside to the outside of the processing tank (55).

9. The surface processing and grinding device of a steel jacketed direct buried steam insulation pipe according to claim 8 is characterized in that: The processing tank (55) is connected to the gas collecting chamber (54) on one side close to the gas collecting chamber (54), and the exhaust fan (56) draws the gas inside the housing (5) to flow downward, and after passing through the dust removal box (57), the gas is discharged from the end of the processing tank (55) to the outside of the workbench (1).

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