Polishing rod for inner wall of pipeline

Abstract

The utility model discloses a pipeline inner wall polishing rod which comprises a front casing pipe, a rear casing pipe and a plurality of middle casing pipes detachably connected between the front casing pipe and the rear casing pipe, a polishing head rod is rotatably connected in the front casing pipe through a rotating bearing, one end of the polishing head rod is detachably connected with a grinding wheel, a middle shaft rod is rotatably connected in the middle casing pipe through a rotating bearing, and the middle shaft rod is detachably connected with the grinding wheel. A transmission rod is rotationally connected into the rear sleeve through a rotating bearing, and the grinding head rod, the middle shaft rod and the transmission rod are sequentially connected through splines. And the number of the middle sleeves can be increased or decreased according to the length of the pipeline, so that the grinding wheel can grind the inner walls of different pipelines, and the grinding range is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grinding rod, specifically to a pipeline inner wall grinding rod. BACKGROUND

[0002] When polishing the inner wall of the pipeline, the grinding wheel needs to be extended to the inner wall of the pipeline. However, the current pipeline inner wall polishing device has the following problems: (1) the grinding wheel is installed on the transmission rod, and when polishing, the grinding wheel and the transmission rod are inserted into the pipeline, and the transmission rod is driven to rotate to drive the grinding wheel to rotate and polish the inner wall of the pipeline. However, the transmission shaft is directly exposed in the pipeline during polishing, and the transmission shaft is easily in contact with the inner wall of the pipeline during rotation, which causes the transmission rod to be easily damaged and the transmission rod to easily damage the inner wall of the pipeline; (2) if the pipeline is too long, it is difficult to extend the length of the transmission rod, thereby making it difficult to polish the pipeline with a longer length. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a pipeline inner wall grinding rod to solve the problems mentioned in the background.

[0004] To solve the above technical problems, the utility model provides the following technical scheme:

[0005] A pipeline inner wall grinding rod, comprising a front sleeve, a rear sleeve, a plurality of middle sleeves detachably connected between the front sleeve and the rear sleeve, a grinding head rod rotatably connected in the front sleeve through a rotary bearing, a grinding wheel detachably connected to one end of the grinding head rod, a middle shaft rod rotatably connected in the middle sleeve through a rotary bearing, a transmission rod rotatably connected in the rear sleeve through a rotary bearing, and the grinding head rod, the middle shaft rod and the transmission rod are connected in sequence by spline.

[0006] Preferably, the connection between the front sleeve and the middle sleeve, the connection between the middle sleeve and the rear sleeve, and the connection between adjacent middle sleeves are all threadedly connected with a connecting shaft sleeve, and the outer wall of the connecting shaft sleeve is connected with a rubber sleeve.

[0007] The above technical scheme, through the connecting shaft sleeve, can make the connection between the front sleeve and the middle sleeve, the connection between adjacent middle sleeves, and the connection between the middle sleeve and the rear sleeve more stable. Moreover, according to the inner wall of the pipeline to be polished, the corresponding model of the connecting shaft sleeve can be selected. Since the rubber sleeve on the outer wall of the connecting shaft sleeve has elasticity, it will be attached to the inner wall of the pipeline by elastic force, thereby supporting the front sleeve, the middle sleeve and the rear sleeve, making them in the middle position of the pipeline, and preventing them from causing wear to the inner wall of the pipeline.

[0008] Preferably, the end of the grinding head rod away from the grinding wheel is connected with a first external spline, the end of the middle shaft rod is provided with a first internal spline matched with the first external spline, the other end of the middle shaft rod is provided with a second external spline matched with the first internal spline, the end of the transmission rod is provided with a second internal spline matched with the second external spline, and the other end of the transmission rod is provided with a third external spline.

[0009] The grinding head rod is in transmission connection with the first internal spline of the middle shaft rod through the first external spline, the second external spline of the middle shaft rod is in transmission connection with the first internal spline of the adjacent middle shaft rod, the second external spline of the last end middle shaft rod is in transmission connection with the second internal spline of the transmission rod, and the transmission rod is in transmission connection with the driving device through the third external spline, so that the driving device can drive the transmission rod, the middle shaft rod and the grinding head rod to rotate, and drive the grinding wheel to rotate.

[0010] Preferably, the end of the grinding head rod away from the middle sleeve is fixedly connected with a first gasket, and is slidably connected with a second gasket, the grinding wheel is located between the first gasket and the second gasket, and the outer end of the grinding head rod is connected with a nut, so that the second gasket, the grinding wheel and the second gasket are tightly close.

[0011] The above technical scheme can replace the grinding wheel by removing the nut and the second gasket, and is convenient for maintenance and installation of the grinding wheel.

[0012] Preferably, the inner wall of the connection part between the front sleeve and the grinding head rod is provided with a first sealing ring, the inner wall of the connection part between the rear sleeve and the transmission rod is provided with a second sealing ring, and the inner wall of the two ends of the connecting shaft sleeve is provided with a third sealing ring.

[0013] The above technical scheme can improve the sealing performance of the front sleeve, the middle sleeve and the rear sleeve through the first sealing ring, the second sealing ring and the third sealing ring.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) According to the length of the pipeline, the number of middle sleeves can be increased or decreased, so that the grinding wheel can polish the inner wall of different pipelines, and the polishing range is improved.

[0016] (2) The grinding head rod is rotationally connected in the front sleeve, the middle shaft rod is rotationally connected in the middle sleeve, and the transmission rod is rotationally connected in the rear sleeve, the middle shaft rod is driven to rotate through the transmission rod, the grinding head rod is driven to rotate through the middle shaft rod, and the grinding wheel is driven to rotate, so as to polish the inner wall of the pipeline, and the grinding head rod, the middle shaft rod and the transmission rod can be protected through the front sleeve, the middle sleeve and the rear sleeve during polishing, and the damage to the inner wall of the pipeline can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the utility model;

[0018] Figure 2 is a sectional view of the utility model;

[0019] Figure 3 is Figure 2 enlarged view at A in the middle;

[0020] Figure 4 is Figure 2 enlarged view at B in the middle;

[0021] Figure 5 is Figure 2 enlarged view at C in the middle;

[0022] Figure 6 is Figure 2 enlarged view at D in the middle;

[0023] Figure 7 is Figure 2 enlarged view at E in the middle;

[0024] In the figure: 1 - front sleeve, 2 - rear sleeve, 3 - middle sleeve, 4 - rotary bearing, 5 - grinding head rod, 6 - grinding wheel, 7 - middle shaft rod, 8 - transmission rod, 9 - connecting shaft sleeve, 10 - rubber sleeve, 11 - first outer spline, 12 - first inner spline, 13 - second outer spline, 14 - second inner spline, 15 - third outer spline, 16 - first gasket, 17 - second gasket, 18 - nut, 19 - first sealing ring, 20 - second sealing ring, 21 - third sealing ring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Embodiment 1

[0027] Please refer to Figures 1-7The utility model provides a pipe inner wall polishing rod, including front sleeve pipe 1, rear sleeve pipe 2, detachable connection between front sleeve pipe and rear sleeve pipe a plurality of middle sleeve pipe 3, the rotation bearing 4 rotation connection is connected with abrasive head rod 5 in front sleeve pipe 1, and the one end detachable connection of abrasive head rod 5 has grinding wheel 6, the rotation bearing 4 rotation connection is connected with middle shaft rod 7 in middle sleeve pipe 3, and the rotation bearing 4 rotation connection is connected with transmission rod 8 in rear sleeve pipe 2, and abrasive head rod 5, middle shaft rod 7 and transmission rod 8 are connected in turn with spline.

[0028] Abrasive head rod 5 is drivenly connected with the first inner spline 12 of middle shaft rod 7 through the first outer spline 11, the second outer spline 13 of middle shaft rod 7 is drivenly connected with the first inner spline 12 of adjacent middle shaft rod 7, the second outer spline 13 of the last end middle shaft rod 7 is drivenly connected with the second inner spline 14 of transmission rod 8, and transmission rod 8 is drivenly connected with driving device through the third outer spline 15, and transmission rod 8, middle shaft rod 7 and abrasive head rod 5 are rotated by driving device to drive grinding wheel 6 to rotate.

[0029] The connecting axle sleeve 9 is screwed in the connecting place of front sleeve pipe 1 and middle sleeve pipe 3, the connecting place of middle sleeve pipe 3 and rear sleeve pipe 2 and the connecting place between adjacent middle sleeve pipe 3, and the outer wall of connecting axle sleeve 9 is connected with rubber sleeve 10. Through connecting axle sleeve 9, the connection between front sleeve pipe 1 and middle sleeve pipe 3, adjacent middle sleeve pipe 3 and middle sleeve pipe 3 and rear sleeve pipe 2 is more stable, and according to the inner wall of the pipe to be polished, the corresponding model connecting axle sleeve 9 can be selected, and because the rubber sleeve 10 on the outer wall of connecting axle sleeve 9 has elasticity, it is adhered to the inner wall of the pipe by elastic force, thereby supporting front sleeve pipe 1, middle sleeve pipe 3 and rear sleeve pipe 2, so that they are in the middle position of the pipe, preventing the inner wall of the pipe from being abraded.

[0030] The first gasket 16 is fixedly connected to the end of abrasive head rod 5 away from the middle sleeve pipe, and the second gasket 17 is slidingly connected, and the grinding wheel 6 is located between the first gasket 16 and the second gasket 17, and the outer end of the abrasive head rod 5 is connected with the nut 18, so that the second gasket 17, the grinding wheel 6 and the first gasket 16 are tightly close. Tighten the nut 18, so that the second gasket 17 tightly presses the grinding wheel 6 on the first gasket 16, so that the grinding wheel 6 can be kept fixed, and the nut 18 and the second gasket 17 can be removed, so that the grinding wheel can be replaced, facilitating the maintenance and installation of the grinding wheel.

[0031] The use method of the embodiment is:

[0032] According to the length of the pipe to be polished, the corresponding number of middle sleeves 3 are installed, and the connecting shaft sleeve 9 with a corresponding diameter is installed according to the inner diameter of the pipe to be polished, so that the rubber sleeve 10 on the outer wall of the connecting shaft sleeve 9 is inserted along the inner wall of the pipe. Then the transmission rod 8 is connected with the driving device, the grinding wheel 6 is installed on the grinding head rod 5, and the grinding wheel 6 is inserted from one end of the pipe, then the driving device controls the rotation of the transmission rod 8, the transmission rod 8 drives the middle shaft rod 7 to rotate, the middle shaft rod 7 drives the grinding head rod 5 to rotate, thereby driving the grinding wheel 6 to rotate, so as to polish the inner wall of the pipe. The grinding wheel 6 is pushed inward during polishing, so as to comprehensively polish the inner wall of the pipe.

[0033] Embodiment 2

[0034] The difference between this embodiment and embodiment 1 is that the inner wall of the connection between the front sleeve 1 and the grinding head rod 5 is provided with a first sealing ring 19, the inner wall of the connection between the rear sleeve 2 and the transmission rod 8 is provided with a second sealing ring 20, and the inner wall of the two ends of the connecting shaft sleeve 9 is provided with a third sealing ring 21.

[0035] The first sealing ring 19 improves the sealing between the grinding head rod 5 and the front sleeve 1, the second sealing ring 20 improves the sealing between the transmission rod 8 and the rear sleeve 2, and the third sealing ring 21 improves the sealing between the front sleeve 1 and the middle sleeve 3, between adjacent middle sleeves 3, and between the middle sleeve 3 and the rear sleeve 2.

[0036] It should be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or further include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0037] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pipe inner wall polishing rod, characterized by: The utility model relates to a multi -section grinding machine, including front sleeve pipe (1), rear sleeve pipe (2), detachable connection between front sleeve pipe and rear sleeve pipe a plurality of middle sleeve pipe (3), the rotation bearing (4) rotation connection has abrasive head rod (5) in front sleeve pipe (1), the one end detachable connection of abrasive head rod (5) has grinding wheel (6), the rotation bearing (4) rotation connection has middle shaft rod (7) in middle sleeve pipe (3), the rotation bearing (4) rotation connection has transmission rod (8) in rear sleeve pipe (2), abrasive head rod (5), middle shaft rod (7) and transmission rod (8) are connected in proper order.

2. A pipe inner wall polishing rod according to claim 1, characterized in that: The connecting axle sleeve (9) is threadedly connected at the connection between the front sleeve pipe (1) and the middle sleeve pipe (3), the connection between the middle sleeve pipe (3) and the rear sleeve pipe (2), and the connection between adjacent middle sleeve pipes (3), and the outer wall of the connecting axle sleeve (9) is connected with a rubber sleeve (10).

3. A pipe inner wall polishing rod according to claim 2, characterized in that: The end of the abrasive head rod (5) away from the grinding wheel is connected with a first external spline (11), one end of the middle shaft rod (7) is provided with a first internal spline (12) matched with the first external spline, the other end of the middle shaft rod (7) is provided with a second external spline (13) matched with the first internal spline, one end of the transmission rod (8) is provided with a second internal spline (14) matched with the second external spline, and the other end of the transmission rod (8) is provided with a third external spline (15).

4. A pipe inner wall polishing rod according to claim 3, characterized in that: The end of the abrasive head rod (5) away from the middle sleeve pipe is fixedly connected with a first gasket (16), and is slidingly connected with a second gasket (17), the grinding wheel (6) is located between the first gasket (16) and the second gasket (17), and the outer end of the abrasive head rod (5) is connected with a nut (18) so that the second gasket (17), the grinding wheel (6) and the first gasket (16) are tightly close.

5. A pipe inner wall polishing rod according to claim 4, characterized in that: The inner wall of the connection between the front sleeve pipe (1) and the abrasive head rod (5) is provided with a first sealing ring (19), and the inner wall of the connection between the rear sleeve pipe (2) and the transmission rod (8) is provided with a second sealing ring (20).

6. A pipe inner wall polishing rod according to claim 5, characterized in that: The inner wall of both ends of the connecting axle sleeve (9) is provided with a third sealing ring (21).

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