Grouting equipment and grouting machines

Abstract

The present invention provides a grouting device and a grouting machine, and relates to the technical field of construction machinery. The grouting device comprises an inner tube, an outer tube, a conduit and a guide plate. The bottom end of the conduit passes through the top end of the inner tube and is sleeved in the inner tube. A seal is provided between the outer wall of the part of the conduit located inside the inner tube and the inner wall of the inner tube. The outer tube is sleeved outside the inner tube, and the top end of the inner tube is exposed outside the top end of the outer tube. A bearing is provided between the inner wall of the outer tube and the outer wall of the inner tube. A perforation is provided on the guide plate, the inner tube is penetrated in the perforation on the guide plate, and the guide plate is fixed on the inner tube. The guide plate is located between the top end of the outer tube and the top end of the inner tube. The present invention alleviates the technical problem that when grouting is performed in the prior art, a gap is generated between the main shaft and the connecting pipe of the grouting device and the sealing ring respectively, and the mud in the main shaft will continuously wear the sealing ring, so that the cement slurry passes through the above-mentioned gap and then flows upward through the sealing gland and then flows downward to the gap between the main shaft and the housing, thereby damaging the bearing.

Description

Technical Field

[0001] The invention relates to the technical field of construction machinery, in particular to a grouting device and a grouting machine. Background Art

[0002] Grouting is a process of forcing concrete or other grouting fluids into cracks and joints in buildings. The construction machinery used for grouting is a grouting machine. The grouting machine includes a concrete pumping truck, a grouting pipe, a grouting device, and a hollow drill rod that are connected in sequence. The drill rod is used to rotate to drill into or out of the ground. The grouting device is used to achieve the connection between the drill rod and the concrete pumping truck, and to achieve the self-rotation process of the drill rod relative to the grouting device.

[0003] like Figure 1 As shown, an existing grouting device includes a main shaft 1' and a connecting pipe 2', the top end of the connecting pipe 2' is connected to the grouting pipe, the bottom end of the connecting pipe 2' passes through the top end of the main shaft 1' and is sleeved in the main shaft 1', and a sealing ring 3' is arranged between the outer wall at the bottom end of the connecting pipe 2' and the inner wall at the top end of the main shaft 1'. In order to prevent the cement slurry in the concrete from flowing upward after passing through the sealing ring 3' between the main shaft 1' and the connecting pipe 2', a sealing gland 4' is also pressed above the sealing ring 3'. The bottom end of the main shaft 1' is connected to the drill rod. In addition, the grouting device also includes a housing 5' and a rolling bearing 6', the housing 5' is sleeved outside the main shaft 1', the rolling bearing 6' is arranged between the housing 5' and the main shaft 1' and is located below the sealing ring 3', and the rolling bearing 6' is used to support the main shaft 1' to rotate relative to the connecting pipe 2' along with the drill rod.

[0004] However, in actual grouting work, since the main shaft 1' rotates, the connecting pipe 2' is stationary relative to the main shaft 1', and therefore gaps will be generated between the main shaft 1' and the connecting pipe 2' and the sealing ring 3' respectively. The sand and gravel in the mud that enters the main shaft 1' through the connecting pipe 2' will continuously wear the sealing ring 3', so that the cement slurry can pass through the above-mentioned gap and then surge upward through the sealing gland 4' and then flow downward to the gap between the main shaft 1' and the housing 5', thereby damaging the bearing between the housing 5' and the main shaft 1', thereby causing the entire grouting device to be scrapped. Summary of the invention

[0005] The object of the present invention is to provide a grouting device and a grouting machine so as to alleviate the technical problem existing in the prior art that when the grouting machine is used for grouting, gaps will be generated between the main shaft and the connecting pipe of the grouting device and the sealing ring respectively, and the sand and gravel in the mud entering the main shaft through the connecting pipe will continuously wear the sealing ring, so that the cement slurry can pass through the above-mentioned gap and then surge upward through the sealing gland and then flow downward to the gap between the main shaft and the shell, thereby damaging the bearing between the shell and the main shaft, thereby causing the entire grouting device to be scrapped.

[0006] The grouting device provided by the present invention comprises an inner tube, an outer tube, a guide tube and a guide plate;

[0007] The catheter and the inner tube both include a top end and a bottom end. The bottom end of the catheter passes through the top end of the inner tube and is sleeved inside the inner tube. A sealing member is provided between the outer wall of the catheter located inside the inner tube and the inner wall of the inner tube.

[0008] The outer tube includes a top end and a bottom end, the outer tube is sleeved on the outside of the inner tube, and the top end of the inner tube is exposed outside the top end of the outer tube; a bearing is arranged between the inner wall of the outer tube and the outer wall of the inner tube;

[0009] The guide plate is provided with perforations corresponding to the inner tube, the inner tube is inserted into the perforations on the guide plate, and the guide plate is fixed on the inner tube; the guide plate is located between the top end of the outer tube and the top end of the inner tube, and the guide plate is used to drain the mud that flows to the top end of the inner tube after passing through the seal to the outside.

[0010] Furthermore, the grouting device also includes a top cover and a connecting sleeve, and the connecting sleeve is cylindrical;

[0011] The top cover is provided with a perforation, and the top end of the conduit is fixed in the perforation on the top cover and communicated with the perforation on the top cover;

[0012] The connecting sleeve comprises a top end and a bottom end, the connecting sleeve is fixed and sleeved on the outside of the outer tube, and the top end of the connecting sleeve is connected to the top cover;

[0013] A slurry discharge hole is arranged on the side wall of the connecting sleeve, and the slurry discharge hole is located between the guide plate and the bottom end of the connecting sleeve.

[0014] Furthermore, the grouting device also includes a pressing piece, which is hollow and cylindrical;

[0015] The pressing piece is sleeved and fixed outside the conduit, and one end of the pressing piece close to the bottom end of the conduit abuts against the sealing piece.

[0016] Furthermore, the grouting device also includes a sealing sleeve, which is groove-shaped;

[0017] A through hole is arranged at the bottom of the groove of the sealing sleeve, the catheter is arranged in the through hole of the sealing sleeve, and the sealing sleeve is fixed on the catheter; a side of the groove bottom of the sealing sleeve close to the pressing piece is in contact with an end of the pressing piece away from the bottom end of the catheter;

[0018] The groove wall of the sealing sleeve is attached to the outer wall of the top end of the inner tube, and the sealing sleeve can guide the mud that passes through the sealing element and the top end of the inner tube and flows to the sealing sleeve to the guide plate.

[0019] Furthermore, an inclined surface is provided on the plate surface of the guide plate, and the inclined surface is inclined from the perforation of the guide plate to the outer edge of the guide plate, and is inclined toward the direction close to the top end of the outer tube.

[0020] Furthermore, a positioning nut and a limiting nut are fixed on the outer wall of the inner tube;

[0021] The positioning nut abuts against a side of the guide plate that is away from the top end of the inner tube, and the limiting nut abuts against a side of the guide plate that is close to the top end of the inner tube.

[0022] Furthermore, the grouting device also includes a bottom cover, and the bottom cover is provided with a perforation;

[0023] The bottom cover is fixed on the bottom end of the outer tube, and the inner tube is communicated with the through hole on the bottom cover.

[0024] Furthermore, an oil filling hole is provided on the side wall of the outer tube at a position close to the bearing.

[0025] Furthermore, the bottom end of the inner tube is exposed outside the bottom end of the outer tube, and an exhaust hole is arranged on the portion of the inner tube exposed outside the bottom end of the outer tube.

[0026] The grouting machine provided by the present invention comprises a grouting pipe, a drill pipe and a grouting device described in any one of the above technical solutions, the grouting pipe is connected to the top end of the conduit in the grouting device, and the drill pipe is connected to the bottom end of the inner tube in the grouting device.

[0027] The grouting device and grouting machine provided by the present invention can produce the following beneficial effects:

[0028] The grouting device provided by the present invention comprises an inner tube, an outer tube, a conduit and a guide plate. Both the conduit and the inner tube comprise a top end and a bottom end, the bottom end of the conduit passes through the top end of the inner tube and is sleeved in the inner tube, and a seal is arranged between the outer wall of the part of the conduit located inside the inner tube and the inner wall of the inner tube. The outer tube comprises a top end and a bottom end, the outer tube is sleeved on the outside of the inner tube, and the top end of the inner tube is exposed outside the top end of the outer tube; a bearing is arranged between the inner wall of the outer tube and the outer wall of the inner tube. A perforation corresponding to the inner tube is arranged on the guide plate, the inner tube is penetrated in the perforation on the guide plate, and the guide plate is fixed on the inner tube. The guide plate is located between the top end of the outer tube and the top end of the inner tube. When the grouting device is needed for grouting, the top end of the conduit is first connected to the grouting pipe in the grouting machine for passing concrete, and the bottom end of the inner tube is connected to the drill pipe in the grouting machine, and then concrete is passed into the grouting pipe. During the grouting process, the conduit, inner tube and outer tube will all remain in an upright state. When concrete enters the grouting tube, the concrete will pass through the conduit and inner tube in sequence and then flow into the drill tube. When the concrete passes through the conduit and inner tube, since the drill tube will drive the inner tube to rotate in the outer tube, and the conduit is stationary relative to the inner tube, a gap will be generated between the seal between the conduit and the inner tube and the contact surface of the conduit, as well as between the seal and the inner tube. At this time, the mud in the concrete can enter the above-mentioned gap. When the seal is worn by the sand and gravel in the mud in the above-mentioned gap and mud leaks, the mud will pass through the seal and flow upward to the top of the inner tube, and then flow downward to the guide plate between the top of the inner tube and the top of the outer tube, and the guide plate can prevent the mud from continuing to flow downward and can divert the mud to the outside, thereby preventing the mud from entering the bearing between the inner tube and the outer tube. Therefore, the guide plate in the grouting device provided by the present invention can prevent the mud in the concrete from damaging the bearing between the inner tube and the outer tube, thereby extending the service life of the grouting device.

[0029] Compared with the prior art, the grouting device provided by the present invention can use the guide plate to drain the mud flowing down from the top of the inner tube to the outside during the grouting process, thereby preventing the mud from entering the bearing between the inner tube and the outer tube, preventing the mud from damaging the bearing, and further preventing the grouting device from being scrapped.

[0030] The grouting machine provided by the present invention comprises a grouting pipe, a drill pipe and the above-mentioned grouting device, the grouting pipe is connected to the top end of the conduit in the grouting device, and the drill pipe is connected to the bottom end of the inner pipe in the grouting device. The grouting machine provided by the present invention comprises the above-mentioned grouting device, so the grouting machine provided by the present invention has the same beneficial effects as the above-mentioned grouting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a structural schematic diagram of an existing grouting device;

[0033] Figure 2 This is a schematic diagram of the structure of the grouting device provided in Example 1 of the present invention.

[0034] Icons: 1'-main shaft; 2'-connecting pipe; 3'-sealing ring; 4'-sealing gland; 5'-housing; 6'-bearing; 1-inner tube; 10-bearing; 11-positioning nut; 12-limiting nut; 13-exhaust hole; 2-outer tube; 20-convex ring; 21-oil filling hole; 3-conduit; 30-seal; 4-guide plate; 40-inclined surface; 5-grouting pipe; 6-top cover; 60-connecting sleeve; 600-discharge hole; 601-connecting ring; 7-pressing piece; 8-sealing sleeve; 9-bottom cover. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] like Figure 2 As shown, the grouting device provided in this embodiment includes an inner tube 1, an outer tube 2, a conduit 3 and a guide plate 4. The conduit 3 and the inner tube 1 both include a top end and a bottom end. The bottom end of the conduit 3 passes through the top end of the inner tube 1 and is sleeved in the inner tube 1. A seal 30 is provided between the outer wall of the conduit 3 located inside the inner tube 1 and the inner wall of the inner tube 1. The outer tube 2 includes a top end and a bottom end. The outer tube 2 is sleeved on the outside of the inner tube 1, and the top end of the inner tube 1 is exposed outside the top end of the outer tube 2; a bearing 10 is provided between the inner wall of the outer tube 2 and the outer wall of the inner tube 1.

[0038] The guide plate 4 is provided with perforations corresponding to the inner tube 1, the inner tube 1 is passed through the perforations on the guide plate 4, and the guide plate 4 is fixed on the inner tube 1; the guide plate 4 is located between the top end of the outer tube 2 and the top end of the inner tube 1, and the guide plate 4 is used to drain the mud that flows to the top end of the inner tube 1 after passing through the seal 30 to the outside.

[0039] When the grouting device is needed for grouting, the top end of the guide tube 3 is first connected to the grouting pipe 5 in the grouting machine for introducing concrete, and the bottom end of the inner tube 1 is connected to the drill pipe in the grouting machine, and then concrete is introduced into the grouting pipe 5.

[0040] During the grouting process, the conduit 3, the inner tube 1 and the outer tube 2 will all remain in an upright state. When concrete enters the grouting pipe 5, the concrete will pass through the conduit 3 and the inner tube 1 in sequence and then flow into the drill pipe. When the concrete passes through the conduit 3 and the inner tube 1, since the drill pipe will drive the inner tube 1 to rotate in the outer tube 2, and the conduit 3 is stationary relative to the inner tube 1, a gap will be generated between the seal 30 between the conduit 3 and the inner tube 1 and the contact surface of the conduit 3, as well as between the seal 30 and the inner tube 1. At this time, the mud in the concrete can enter the above-mentioned gap. When the seal 30 is worn by the sand and gravel in the mud in the above-mentioned gap and mud leaks, the mud will pass through the seal 30 and flow upward to the top of the inner tube 1, and then flow downward to the guide plate 4 between the top of the inner tube 1 and the top of the outer tube 2, and the guide plate 4 can prevent the mud from continuing to flow downward and can drain the mud to the outside, thereby preventing the mud from entering the bearing 10 between the inner tube 1 and the outer tube 2.

[0041] Therefore, the guide plate 4 in the grouting device provided in this embodiment can prevent the mud in the concrete from damaging the bearing 10 between the inner tube 1 and the outer tube 2, thereby extending the service life of the grouting device.

[0042] Compared with the prior art, the grouting device provided in this embodiment can use the guide plate 4 to guide the mud flowing down from the top of the inner tube 1 to the outside during the grouting process, thereby preventing the mud from entering the bearing 10 between the inner tube 1 and the outer tube 2, preventing the mud from damaging the bearing 10, and further preventing the grouting device from being scrapped.

[0043] It can be seen that the grouting device provided in this embodiment alleviates the technical problem existing in the prior art that when a grouting machine is used for grouting, gaps will be generated between the main shaft and the connecting pipe of the grouting device and the sealing ring respectively, and the sand and gravel in the mud entering the main shaft through the connecting pipe will continuously wear the sealing ring, so that the cement slurry can pass through the above-mentioned gap and then flow upward through the sealing gland and then flow downward to the gap between the main shaft and the shell, thereby damaging the bearing between the shell and the main shaft, thereby causing the entire grouting device to be scrapped.

[0044] In actual use, the grouting device provided in this embodiment can withstand the tension caused by the concrete slurry conveying force and the tension caused by the axial tension of the drill pipe under various working conditions, and can still remain intact after long-term use under such working conditions. Compared with the grouting process in the prior art, in which the slurry easily rushes into the bearings in the existing grouting device, causing the grouting device to be unable to be used normally, requiring the grouting device to be cleaned or replaced, thereby affecting the progress of piling and the quality of the project and increasing the construction cost, the grouting device provided in this embodiment can effectively improve the progress of piling and the quality of the project, while reducing the construction cost.

[0045] In practical applications, the sealing member 30 may be an annular rubber ring or an annular silicone ring.

[0046] like Figure 2 As shown, the grouting device provided in this embodiment also includes a top cover 6 and a connecting sleeve 60, and the connecting sleeve 60 is cylindrical. The top cover 6 is provided with a perforation, and the top end of the conduit 3 is fixed in the perforation on the top cover 6 and communicates with the perforation on the top cover 6. The connecting sleeve 60 includes a top end and a bottom end, and the connecting sleeve 60 is fixed and sleeved on the outside of the outer tube 2, and the top end of the connecting sleeve 60 is connected to the top cover 6. The side wall of the connecting sleeve 60 is provided with a slurry discharge hole 600, and the slurry discharge hole 600 is located between the guide plate 4 and the bottom end of the connecting sleeve 60.

[0047] The top cover 6 is used to support the catheter 3. In order to further stably support the catheter 3, a limiting ring can be provided at the top end of the catheter 3, which is perpendicular to the catheter 3 and extends away from the direction of the pipe mouth. A slot corresponding to the limiting ring is provided on the inner side wall of the perforation on the top cover 6, and the limiting ring can be inserted in the above-mentioned slot.

[0048] The connecting sleeve 60 is used to improve the installation stability between the outer tube 2, the conduit 3 and the inner tube 1. The slurry discharge hole 600 facilitates the slurry discharged from the guide plate 4 to flow out of the connecting sleeve 60 to the outside, and can prevent the slurry from staying in the connecting sleeve 60 and wearing the connection position between the connecting pipe and the outer tube 2.

[0049] In order to facilitate the mud to flow out of the slurry discharge hole 600, in this embodiment, the slurry discharge hole 600 is preferably arranged on the side wall of the connecting sleeve 60 near the bottom end of the connecting sleeve 60.

[0050] like Figure 2 As shown, a connecting ring 601 is provided at the bottom end of the connecting sleeve 60, which is perpendicular to the connecting sleeve 60 and extends in a direction away from the center of the connecting sleeve 60. A convex ring 20 is provided on the outer wall of the outer tube 2, which is perpendicular to the outer tube 2. Both the convex ring 20 and the connecting ring 601 are provided with threaded holes, and the threaded holes on the convex ring 20 are connected with the threaded holes on the connecting ring 601. Bolts are connected in the threaded holes, and the bolts are used to fix the connecting sleeve 60 and the outer tube 2 together.

[0051] like Figure 2As shown, the grouting device provided in this embodiment further includes a pressing piece 7, which is hollow and cylindrical. The pressing piece 7 is sleeved and fixed outside the conduit 3, and one end of the pressing piece 7 close to the bottom end of the conduit 3 abuts against the sealing piece 30.

[0052] The pressing piece 7 may be a sealing gland in an existing grouting device, and the pressing piece 7 is used to fix the sealing piece 30 between the conduit 3 and the inner tube 1 to improve the position stability of the sealing piece 30 .

[0053] Further, such as Figure 2 As shown, the grouting device provided in this embodiment further includes a sealing sleeve 8, which is groove-shaped. A through hole is provided at the bottom of the groove of the sealing sleeve 8, and the conduit 3 is passed through the through hole on the sealing sleeve 8, and the sealing sleeve 8 is fixed on the conduit 3. One side of the groove bottom of the sealing sleeve 8 close to the pressing piece 7 is in contact with one end of the pressing piece 7 away from the bottom end of the conduit 3.

[0054] The groove wall of the sealing sleeve 8 is attached to the outer wall of the top end of the inner tube 1 , and the sealing sleeve 8 can guide the mud that passes through the sealing member 30 and the top end of the inner tube 1 and flows to the sealing sleeve 8 to the guide plate 4 .

[0055] The sealing sleeve 8 can be fixed on the conduit 3 by screws, and the sealing sleeve 8 is used to fix the pressing piece 7 on the sealing piece 30 .

[0056] The sealing sleeve 8 can play a certain role in hindering the mud after passing through the sealing member 30 and the pressing member 7. However, during the grouting process, a certain amount of mud in the concrete that enters the conduit 3 and the inner tube 1 passes through the sealing member 30 and the top of the inner tube 1, and then passes through the gap between the pressing member 7 and the conduit 3, and the gap between the sealing sleeve 8 and the conduit 3, and then flows through the outer wall of the groove bottom of the sealing sleeve 8, and then falls along the outer wall of the groove wall of the sealing sleeve 8 to the guide plate 4.

[0057] It can be seen that the sealing sleeve 8 can also guide the mud, so that the mud is more likely to flow onto the guide plate 4 instead of flowing into the bearing 10 between the outer tube 2 and the inner tube 1.

[0058] In order to effectively prevent mud from flowing into the bearing 10 between the outer tube 2 and the inner tube 1, in this embodiment, the perforated inner wall of the guide plate 4 is preferably in contact with the outer wall of the inner tube 1, that is, there is no gap between the perforated inner wall of the guide plate 4 and the outer wall of the inner tube 1.

[0059] like Figure 2 As shown, an inclined surface 40 is provided on the plate surface of the guide plate 4 , and the inclined surface 40 is inclined from the perforation of the guide plate 4 to the outer edge of the guide plate 4 , toward the direction close to the top end of the outer tube 2 .

[0060] The inclined surface 40 provided on the plate surface of the guide plate 4 facilitates the mud flowing onto the guide plate 4 to flow to the outside or to the slurry discharge hole 600 on the connecting sleeve 60, which can increase the speed of discharging the mud.

[0061] like Figure 2 As shown, a positioning nut 11 and a limiting nut 12 are fixed on the outer wall of the inner tube 1 , the positioning nut 11 abuts against the side of the guide plate 4 away from the top end of the inner tube 1 , and the limiting nut 12 abuts against the side of the guide plate 4 close to the top end of the inner tube 1 .

[0062] A screw may be inserted into the side wall of the positioning nut 11, and the screw is fixedly hung on the inner tube 1, so that the positioning nut 11 can be fixed on the inner tube 1. The limiting nut 12 can be fixed on the inner tube 1 by threaded connection.

[0063] The positioning nut 11 is used to cooperate with the limiting nut 12 to fix the guide plate 4 between the top end of the inner tube 1 and the top end of the outer tube 2 .

[0064] Furthermore, in order to facilitate fixing the position of the guide plate 4 , in this embodiment, the guide plate 4 is preferably fixed on the top end of the outer tube 2 .

[0065] When the guide plate 4 is provided with an inclined surface 40 , the top end of the outer tube 2 is provided with an inclined surface 40 corresponding to the inclined surface 40 on the guide plate 4 , so that the side of the guide plate 4 close to the top end of the outer tube 2 can be stably attached to the top end of the outer tube 2 .

[0066] like Figure 2 As shown, the grouting device further comprises a bottom cover 9, and a perforation is arranged on the bottom cover 9. The bottom cover 9 is fixed on the bottom end of the outer tube 2, and the inner tube 1 is communicated with the perforation on the bottom cover 9.

[0067] The bottom cover 9 can cooperate with the guide plate 4 to enclose the bearing 10 in the space between the outer wall of the inner tube 1 and the inner wall of the outer tube 2 , thereby protecting the bearing 10 .

[0068] The bottom cover 9 can be fixed on the bottom end of the outer tube 2 by screws.

[0069] like Figure 2 As shown, an oil filling hole 21 is provided on the side wall of the outer tube 2 near the bearing 10 .

[0070] In order to extend the service life of the bearing 10, the bearing 10 needs to be filled with oil to lubricate the bearing 10. The oil filling hole 21 is used to provide a channel for filling oil into the bearing 10, thereby facilitating the lubrication of the bearing 10.

[0071] like Figure 2 As shown, the bottom end of the inner tube 1 is exposed outside the bottom end of the outer tube 2 , and an exhaust hole 13 is provided on the portion of the inner tube 1 exposed outside the bottom end of the outer tube 2 .

[0072] The exhaust hole 13 can reduce the mud grouting pressure in the inner tube 1 , thereby reducing the wear of the sealing member 30 , thereby playing a role in protecting the sealing member 30 .

[0073] There may be a plurality of exhaust holes 13. The exhaust holes 13 may be circular in shape, and the diameter of the exhaust holes 13 may be 20 to 60 mm.

[0074] Embodiment 2:

[0075] The grouting machine provided in this embodiment includes a grouting pipe, a drill pipe and the grouting device in the first embodiment. The top end of the grouting pipe is connected to the conduit in the grouting device, and the bottom end of the drill pipe is connected to the inner pipe in the grouting device.

[0076] The grouting machine provided in this embodiment includes the grouting device in the first embodiment, so the grouting machine provided in this embodiment and the grouting device in the first embodiment can solve the same technical problems and achieve the same technical effects. Therefore, the grouting machine provided in this embodiment also alleviates the technical problem existing in the prior art that when the grouting machine is used for grouting, the main shaft and the connecting pipe of the grouting device will respectively produce gaps with the sealing ring, and the sand and gravel in the mud entering the main shaft through the connecting pipe will continuously wear the sealing ring, so that the cement slurry can flow upward through the sealing gland through the above-mentioned gap and then flow downward to the gap between the main shaft and the shell, thereby damaging the bearing between the shell and the main shaft, thereby causing the entire grouting machine to be scrapped.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grouting device, characterized in that: The grouting device comprises an inner tube, an outer tube, a conduit and a guide plate; The conduit and the inner tube both include a top end and a bottom end, the bottom end of the conduit passes through the top end of the inner tube and is sleeved in the inner tube, and a sealing member is provided between the outer wall of the conduit located inside the inner tube and the inner wall of the inner tube; The outer tube includes a top end and a bottom end, the outer tube is sleeved on the outside of the inner tube, and the top end of the inner tube is exposed outside the top end of the outer tube; a bearing is provided between the inner wall of the outer tube and the outer wall of the inner tube; The guide plate is provided with a perforation corresponding to the inner tube, the inner tube is inserted into the perforation on the guide plate, and the guide plate is fixed on the inner tube; the guide plate is located between the top end of the outer tube and the top end of the inner tube, and the guide plate is used to guide the mud that flows to the top end of the inner tube after passing through the sealing member to the outside; The grouting device further comprises a pressing piece, which is hollow and cylindrical; The pressing piece is sleeved and fixed outside the conduit, and one end of the pressing piece close to the bottom end of the conduit abuts against the sealing piece; The grouting device further comprises a sealing sleeve, and the sealing sleeve is groove-shaped; The sealing sleeve is provided with a through hole at the bottom of the groove, the conduit is passed through the through hole on the sealing sleeve, and the sealing sleeve is fixed on the conduit; a side of the groove bottom of the sealing sleeve close to the pressing piece is in contact with an end of the pressing piece away from the bottom end of the conduit; The groove wall of the sealing sleeve is attached to the outer wall of the top end of the inner tube, and the sealing sleeve can guide the mud that passes through the sealing element and the top end of the inner tube and flows to the sealing sleeve to the guide plate; The inner wall of the perforation on the guide plate is in contact with the outer wall of the inner tube; The grouting device also includes a top cover and a connecting sleeve, and the connecting sleeve is cylindrical; The top cover is provided with a through hole, and the top end of the conduit is fixed in the through hole on the top cover and communicated with the through hole on the top cover; The connecting sleeve comprises a top end and a bottom end, the connecting sleeve is fixed and sleeved on the outside of the outer tube, and the top end of the connecting sleeve is connected to the top cover; A slurry discharge hole is arranged on the side wall of the connecting sleeve, and the slurry discharge hole is located between the guide plate and the bottom end of the connecting sleeve.

2. The grouting device according to claim 1, characterized in that: An inclined surface is arranged on the plate surface of the guide plate, and the inclined surface is inclined from the through hole of the guide plate to the outer edge of the guide plate, and is inclined toward the direction close to the top end of the outer tube.

3. The grouting device according to claim 1, characterized in that: A positioning nut and a limiting nut are fixed on the outer wall of the inner tube; The positioning nut abuts against a side of the guide plate away from the top end of the inner tube, and the limiting nut abuts against a side of the guide plate close to the top end of the inner tube.

4. The grouting device according to claim 1, characterized in that: The grouting device further comprises a bottom cover, and the bottom cover is provided with a perforation; The bottom cover is fixed on the bottom end of the outer tube, and the inner tube is communicated with the through hole on the bottom cover.

5. The grouting device according to claim 1, characterized in that: An oil filling hole is arranged on the side wall of the outer tube at a position close to the bearing.

6. The grouting device according to any one of claims 1 to 5, characterized in that: The bottom end of the inner tube is exposed outside the bottom end of the outer tube, and an exhaust hole is arranged on the portion of the inner tube exposed outside the bottom end of the outer tube.

7. A grouting machine, characterized in that: The grouting machine comprises a grouting pipe, a drill pipe and the grouting device according to any one of claims 1 to 6, wherein the grouting pipe is connected to the top end of the conduit in the grouting device, and the drill pipe is connected to the bottom end of the inner tube in the grouting device.

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