Polishing equipment for interior of stainless steel pipe

Abstract

The utility model discloses a stainless steel pipe inner polishing device which comprises a machine base provided with a power unit, the power unit is in transmission connection with a rotating shaft, and the front end of the rotating shaft is detachably connected with a polishing head. The polishing head comprises an elastic supporting mechanism and a plurality of polishing pieces which are distributed on the elastic supporting mechanism at equal intervals around the axis of the rotating shaft, and the polishing pieces are distributed in the axial direction of the rotating shaft and rotationally connected with the elastic supporting mechanism. The polishing head extends into the stainless steel pipe and is driven by the rotating shaft to rotate so as to polish the inner wall of the stainless steel pipe, and the polishing piece is tightly abutted against the inner wall of the stainless steel pipe all the time under the elastic supporting action of the elastic supporting piece, so that the polishing effect of the polishing equipment on the inner wall of the stainless steel pipe is ensured; and through stretching and retracting of the elastic supporting piece, the polishing head can be suitable for stainless steel pipes with different inner diameters, and the practicability of the polishing equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polishing equipment, and particularly relates to an inner polishing equipment for stainless steel pipes. Background Art

[0002] When producing stainless steel pipes, it is necessary to polish the inner wall thereof to remove surface defects on the inner wall, improve the surface finish, extend the service life of the pipes, improve the fluid transportation efficiency, etc.

[0003] When the existing polishing equipment polishes the inner wall of a stainless steel pipe, a polishing wheel is usually inserted into the stainless steel pipe, and polishing is carried out by rotating the polishing wheel. However, as the polishing wheel is worn during use, the size of the polishing wheel decreases, resulting in the polishing wheel being unable to closely fit the inner wall of the stainless steel pipe, thereby affecting the polishing effect on the inner wall of the stainless steel pipe.

[0004] Therefore, it is necessary to improve the inner polishing equipment for stainless steel pipes in the prior art. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the defects existing in the prior art, and provide an inner polishing equipment for stainless steel pipes, which improves the polishing effect of the polishing equipment on the inner wall of the stainless steel pipe.

[0006] To achieve the above purpose, the specific technical solution of the inner polishing equipment for stainless steel pipes of the utility model is as follows:

[0007] An inner polishing equipment for stainless steel pipes, comprising a machine base provided with a power unit, the power unit is drivingly connected with a rotating shaft, and the front end of the rotating shaft is detachably connected with a polishing head;

[0008] The polishing head includes an elastic support mechanism and a plurality of polishing members evenly distributed on the elastic support mechanism at equal intervals around the axis of the rotating shaft, the polishing members are axially distributed along the rotating shaft and are rotatably connected with the elastic support mechanism.

[0009] Preferably, the elastic support mechanism includes an installation sleeve and a sliding sleeve sleeved on the outer periphery of the installation sleeve, a thrust unit is arranged between the front end of the installation sleeve and the sliding sleeve, the number of the thrust units is the same as and corresponds to the number of the polishing members one by one, the middle of the polishing member is rotatably connected with the thrust unit, and a spring for pushing the sliding sleeve to slide is also sleeved on the installation sleeve.

[0010] Preferably, the front end of the rotating shaft has an external thread section and a positioning ring, the installation sleeve is threadedly connected with the external thread section, and the end of the installation sleeve abuts against the positioning ring.

[0011] Preferably, the spring is a compression spring, and the two ends of the spring respectively abut against the sliding sleeve and the positioning ring.

[0012] Preferably, the thrust unit includes a rotating rod and a transmission rod. Two ends of the rotating rod are respectively hinged to the front end of the mounting sleeve and the middle part of the polishing member, and two ends of the transmission rod are respectively hinged to the sliding sleeve and the rotating rod.

[0013] Preferably, the polishing member includes a polishing block and a mounting seat. The end of the rotating rod is hinged to the middle part of the bottom surface of the mounting seat. A plugging groove is formed in the top surface of the mounting seat, and a plugging strip which is in plugging fit with the plugging groove is arranged on the polishing block.

[0014] Preferably, an elastic cord is arranged between one end of the mounting seat adjacent to the front end of the mounting sleeve and the rotating rod.

[0015] Preferably, the rotating shaft is a hollow tubular structure. The front end of the mounting sleeve is closed, and a plurality of openings are radially formed in the outer periphery thereof. The openings are communicated with the inside of the rotating shaft.

[0016] The stainless steel pipe internal polishing device of the present utility model has the following advantages: The polishing head extends into the stainless steel pipe, and is driven by the rotating shaft to rotate to polish the inner wall of the stainless steel pipe. Through the elastic support of the elastic support member, the polishing member is always in close contact with the inner wall of the stainless steel pipe, so as to ensure the polishing effect of the polishing device on the inner wall of the stainless steel pipe; and through the expansion and contraction of the elastic support member, the polishing head can also be applicable to stainless steel pipes with different inner diameters, improving the practicability of the polishing device; through the rotation of the polishing member, the distance between the front ends of the polishing members can be reduced, reducing the front end range of the polishing head and facilitating the entry of the polishing head into the stainless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the polishing device of the present utility model;

[0018] Figure 2 is a schematic connection structure diagram of the rotating shaft and the polishing head of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the polishing head of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the rotating shaft of the present utility model;

[0021] Figure 5 is a schematic structural diagram of the polishing member of the present utility model;

[0022] Marking description in the figure: 1. Polishing head; 2. Rotating shaft; 3. Power unit; 4. Machine base; 5. Moving seat; 6. Fixture; 101. Mounting sleeve; 102. Sliding sleeve; 103. Spring; 104. Polishing block; 105. Mounting seat; 106. Transmission rod; 107. Rotating rod; 108. Opening; 109. Insertion slot; 110. Insertion slot; 111. Elastic cord; 201. External thread section; 202. Positioning ring. Detailed implementation manner

[0023] The following combines the accompanying drawings and embodiments to further describe the detailed implementation manner of the present utility model. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0024] "Top surface", "bottom", "bottom surface" are referenced based on the normal use state of the inner wall polishing equipment of the stainless steel pipe, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0025] As Figures 1-3 As shown, a polishing equipment for the inner wall of a stainless steel pipe includes a machine base 4 provided with a power unit 3. The power unit 3 is drivingly connected to a rotating shaft 2, and the front end of the rotating shaft 2 is detachably connected to a polishing head 1. The polishing head 1 includes an elastic support mechanism and a plurality of polishing members that are evenly distributed on the elastic support mechanism at equal intervals around the axis of the rotating shaft 2. The polishing members are axially distributed along the rotating shaft 2 and are rotatably connected to the elastic support mechanism.

[0026] The above polishing equipment can be used to polish the inner wall of the stainless steel pipe. The power unit provided on the top surface of the machine base 4 can be a gearbox. The gearbox has a power input end connected to a motor and multiple power output ends connected to the rotating shaft 2. A moving seat 5 that can move along the extending direction of the rotating shaft 2 is also provided on the machine base 4, and a fixture 6 for fixing the stainless steel pipe is installed on the moving seat 5.

[0027] During use, the power unit 3 drives each rotating shaft 2 to rotate, then drives the polishing head 1 to rotate through the rotating shaft 2, and drives the stainless steel pipe fixed on the fixture 6 to move by the moving seat 5, so that the rotating polishing head 1 extends into the stainless steel pipe, thereby realizing the polishing of the inner wall of the stainless steel pipe.

[0028] The polishing head 1 is detachably connected to the rotating shaft 2, which is conducive to the disassembly and replacement of the polishing head 1 and improves the convenience of maintaining the polishing equipment. The elastic support mechanism is used to fix each polishing part and enable each polishing part to move radially along the rotating shaft 2. In this way, the distance between the polishing part and the rotating shaft 2 can be adjusted according to the diameter of the stainless steel pipe, so that the polishing equipment can be applied to the polishing treatment of stainless steel pipes with different inner diameters. Moreover, the elastic support mechanism applies an elastic force radially outward along the rotating shaft to the polishing part, so that through the action of the elastic force, the polishing part is closely attached to the inner wall of the stainless steel pipe, and the inner wall of the stainless steel pipe is polished by the polishing part, thereby improving the polishing effect of the polishing equipment on the inner wall of the stainless steel pipe. The rotatably arranged polishing part can adjust its own angle. When the distance between the front end of the polishing part and the rotating shaft is less than the distance between the rear end and the rotating shaft, the whole polishing head 1 presents a sharp front end state. Thus, under the guiding action of the polishing part, it is convenient to insert the polishing head 1 into the stainless steel pipe, improving the convenience of using the polishing equipment.

[0029] A further improvement is that, as Figure 2 and 3 shown, the elastic support mechanism includes an installation sleeve 101 and a sliding sleeve 102 sleeved on the outer periphery of the installation sleeve 101. A thrust unit is arranged between the front end of the installation sleeve 101 and the sliding sleeve 102. The number of thrust units is the same as and corresponds one-to-one to the number of polishing parts. The middle part of the polishing part is rotatably connected to the thrust unit. A spring 103 for pushing the sliding sleeve 102 to slide is also sleeved on the installation sleeve 101. The thrust unit includes a rotating rod 107 and a transmission rod 106. The two ends of the rotating rod 107 are respectively hinged to the front end of the installation sleeve 101 and the middle part of the polishing part, and the two ends of the transmission rod 106 are respectively hinged to the sliding sleeve 102 and the rotating rod 107.

[0030] In the above polishing equipment, the sliding sleeve 102 moves axially along the installation sleeve 101. Under the transmission action of the transmission rod 106, the sliding sleeve 102 controls the rotation of the rotating rod 107, and then controls the angle between the rotating rod 107 and the rotating shaft 2. When the angle increases, the rotating rod 107 drives the polishing head to move away from the installation sleeve 101. At this time, the polishing head 1 can be applied to the inner wall polishing of a stainless steel pipe with a larger inner diameter. When the angle decreases, the rotating rod 107 drives the polishing head to move closer to the installation sleeve 101. At this time, the polishing head 1 can be applied to the inner wall polishing of a stainless steel pipe with a smaller inner diameter. Moreover, under the action of the elastic force of the spring 103, a thrust radially outward along the installation sleeve 101 is continuously applied to the polishing part, so that when the polishing part is inside the stainless steel pipe, it can always be closely attached to the inner wall of the stainless steel pipe, improving the polishing effect of the polishing equipment on the inner wall of the stainless steel pipe.

[0031] A further improvement is that, as Figure 4As shown, the front end of the rotating shaft 2 has an external thread section 201 and a positioning ring 202. The mounting sleeve 101 is threadedly connected to the external thread section 201, and the end of the mounting sleeve 101 abuts against the positioning ring 202. The disassembly between the threadedly connected mounting sleeve 101 and the rotating shaft 2 is more convenient, thus facilitating the disassembly of the polishing head 1 and improving the convenience of repairing the polishing equipment.

[0032] A further improvement is that, as Figure 2 shown, the spring 103 is a compression spring, and both ends of the spring 103 abut against the sliding sleeve 102 and the positioning ring 202 respectively. The positioning ring 202 is provided for positioning the mounting sleeve 101 and also for supporting the spring 103; and through the elastic force of the spring 103, the threads between the mounting sleeve 101 and the rotating shaft 2 can be locked with each other, improving the firmness of the installation of the mounting sleeve 101.

[0033] A further improvement is that, as Figure 3 and 5 shown, the polishing part includes a polishing block 104 and a mounting seat 105. The end of the rotating rod 107 is hinged to the middle of the bottom surface of the mounting seat 105. The top surface of the mounting seat 105 is provided with a plugging groove 110, and the polishing block 104 is provided with a plugging strip 109 that is plugging - matched with the plugging groove 110. The polishing part is divided into the mounting seat 105 and the polishing block 104, enabling the separate replacement of the polishing block 104. The material of the polishing block 104 can be felt or sponge; the setting of the plugging strip 109 and the plugging groove 110 can improve the convenience of replacing the polishing block 104, and screws can be provided between the polishing block 104 and the mounting seat 105 to prevent loosening between the two.

[0034] A further improvement is that, as Figure 3 and 5 shown, an elastic cord 111 is provided between the end of the mounting seat 105 adjacent to the front end of the mounting sleeve 101 and the rotating rod 107. The elastic cord 111 can pull the front end of the polishing part to move towards the direction close to the front end of the mounting sleeve 101, making the front end of the polishing part closely adhere to the front end of the mounting sleeve 101, so that the whole polishing head 1 presents a conical structure as Figure 2 shown, thus facilitating the insertion of the polishing head 1 into the interior of the stainless - steel pipe; the elastic force of the spring 103 is much greater than the elastic force of the elastic cord 111, so that after the polishing part enters the interior of the stainless - steel pipe, the spring 103 can push the polishing part to overcome the elastic force of the elastic cord 111 and closely adhere to the inner wall of the stainless - steel pipe.

[0035] A further improvement is that, as Figure 3 and 4As shown, the rotating shaft 2 is a hollow tubular structure. The front end of the mounting sleeve 101 is closed, and a plurality of openings 108 are radially formed on its outer periphery. The openings 108 communicate with the inside of the rotating shaft 2. The rotating shaft 2 of the tubular structure can be used to convey cleaning liquid or cooling liquid, and then spray it through the openings 108 to the contact part between the polishing block 104 and the inner wall of the stainless steel pipe for cooling, preventing damage to the inner wall of the stainless steel pipe due to excessive temperature during polishing. At the same time, it can also clean the debris generated during polishing, improving the polishing effect of the polishing equipment on the inner wall of the stainless steel pipe.

[0036] It can be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A stainless steel pipe internal polishing device, comprising a machine base (4) provided with a power unit (3), wherein the power unit (3) is drivingly connected to a rotating shaft (2), characterized in that: The front end of the rotating shaft (2) is detachably connected to a polishing head (1); The polishing head (1) comprises an elastic support mechanism and a plurality of polishing pieces which are evenly spaced and distributed on the elastic support mechanism around the axis of the rotating shaft (2); the polishing pieces are distributed along the axial direction of the rotating shaft (2) and are rotatably connected to the elastic support mechanism; the elastic support mechanism is configured to apply an elastic force along the radial direction of the rotating shaft (2) to the polishing pieces so that the polishing pieces are closely fitted to the inner wall of the stainless steel pipe.

2. The stainless steel tube inner polishing equipment according to claim 1, characterized in that: The elastic support mechanism comprises a mounting sleeve (101) and a sliding sleeve (102) sleeved on the outer circumference of the mounting sleeve (101); a thrust unit is arranged between the front end of the mounting sleeve (101) and the sliding sleeve (102); the number of the thrust units is consistent with the number of the polishing pieces and corresponds one to one; the middle part of the polishing piece is rotatably connected to the thrust unit; and the mounting sleeve (101) is also sleeved with a spring (103) for pushing the sliding sleeve (102) to slide.

3. The stainless steel pipe internal polishing equipment according to claim 2, characterized in that: The front end of the rotating shaft (2) has an external thread section (201) and a positioning ring (202); the mounting sleeve (101) is threadedly connected to the external thread section (201); and the end of the mounting sleeve (101) abuts against the positioning ring (202).

4. The stainless steel pipe internal polishing equipment according to claim 3, characterized in that: The spring (103) is a compression spring, and two ends of the spring (103) respectively abut against the sliding sleeve (102) and the positioning ring (202).

5. The stainless steel pipe internal polishing equipment according to claim 2, characterized in that: The thrust unit comprises a rotating rod (107) and a transmission rod (106), wherein two ends of the rotating rod (107) are respectively hinged to the front end of the mounting sleeve (101) and the middle part of the polishing member, and two ends of the transmission rod (106) are respectively hinged to the sliding sleeve (102) and the rotating rod (107).

6. The stainless steel tube inner polishing equipment according to claim 5, characterized in that: The polishing piece comprises a polishing block (104) and a mounting seat (105); the end of the rotating rod (107) is hinged to the middle of the bottom surface of the mounting seat (105); a plug-in slot (110) is provided on the top surface of the mounting seat (105); and the polishing block (104) is provided with a plug-in strip (109) that is plugged into and matched with the plug-in slot (110).

7. The stainless steel pipe internal polishing equipment according to claim 6, characterized in that: An elastic rope (111) is arranged between one end of the mounting seat (105) adjacent to the front end of the mounting sleeve (101) and the rotating rod (107).

8. The stainless steel tube inner polishing equipment according to claim 2, characterized in that: The rotating shaft (2) is a hollow tubular structure; the front end of the mounting sleeve (101) is closed and a plurality of openings (108) are radially provided on its outer circumference; the openings (108) are in communication with the interior of the rotating shaft (2).

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