Disc spring assembly of pipe scraper

Abstract

The utility model discloses a disc spring assembly of a pipe scraper, which comprises a disc spring inner protection seat, a disc spring module positioned on the disc spring inner protection seat and a scraper fixed on the outer side of the disc spring inner protection seat and used for cleaning the inner wall of a sleeve, and a movable groove is formed on the top wall of the disc spring inner protection seat. The disc spring module comprises a disc spring body fixedly connected to the bottom wall of the movable groove and a piston plate fixedly connected to the upper portion of the disc spring body, the piston plate is welded to the inner wall of the scraper, fixing sleeves are symmetrically welded to the two opposite side walls of the disc spring inner protection base, and a positioning base is welded to the bottom wall of one fixing sleeve; a rotary knob is rotationally connected to the positioning seat, inner cavities of the two fixing sleeves are formed in the top wall of the positioning seat, a threaded rod and a limiting sliding rod are arranged in the inner cavities of the two fixing sleeves respectively, and the rotary knob is coaxially connected with the threaded rod. According to the disc spring assembly of the pipe scraper, the position of the disc spring assembly can be adjusted in a larger range on the pipe scraper so as to adapt to cleaning work of the inner walls of sleeves with different diameters, and the application range of the disc spring assembly is widened.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe scrapers, and in particular relates to a disc spring assembly of a pipe scraper. Background Art

[0002] The scraper can be used to remove cement blocks, cement rings, hard wax, various salt crystals and sediments, perforation burrs, and iron oxide produced by casing corrosion on the inner wall of the casing, so as to allow various downhole tools to be lowered unimpeded.

[0003] In the process of realizing the utility model, the inventors found that there are at least the following problems in this technology: a key component on the scraper is the disc spring assembly. The current disc spring assembly can usually only adjust the scraper simply by the elasticity of the disc spring, resulting in a very small adjustable range of the scraper, which is almost limited, making it inconvenient to adapt to the inner wall cleaning of sleeves with different diameters.

[0004] For this reason, we propose a scraper disc spring assembly to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a scraper disc spring assembly, which can be adjusted in a wider range on the scraper to adapt to the cleaning work of the inner wall of the casing with different diameters, improve its scope of application, and effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A disc spring assembly for a pipe scraper, comprising a disc spring inner protection seat, a disc spring module located on the disc spring inner protection seat, and a scraper fixed to the outer side of the disc spring inner protection seat for cleaning the inner wall of a casing, wherein a movable groove is formed on the top wall of the disc spring inner protection seat, the disc spring module comprises a disc spring body fixedly connected to the bottom wall of the movable groove and a piston plate fixedly connected above the disc spring body, wherein the piston plate is welded to the inner wall of the scraper;

[0008] Fixed sleeves are symmetrically welded on the two opposite side walls of the inner protection seat of the disc spring, a positioning seat is welded on the bottom wall of one of the fixed sleeves, a knob is rotatably connected to the positioning seat, the inner cavities of the two fixed sleeves are formed on the top walls thereof, a screw and a limit slide are respectively arranged in the inner cavities of the two fixed sleeves, wherein the knob is coaxially connected with the screw, and the limit slide is welded in the other fixed sleeve;

[0009] In addition, inner movable blocks are slidably provided in the two fixed sleeves, one of which is threadedly sleeved on the screw rod, and the other is slidably sleeved on the limiting slide rod. Outer movable blocks are respectively welded integrally on the two inner movable blocks, and the two outer movable blocks are symmetrically welded on the piston plate.

[0010] As a preferred implementation scheme, a limiting column is fixedly welded at the center of the bottom wall of the movable groove, and a gasket is fixedly bonded to the limiting column; the gasket can be made of rubber material and is used to contact the piston plate when the disc spring body is subjected to the maximum compression degree, so as to prevent the disc spring body from continuing to be compressed and damaged at this time. The limiting column and the gasket are both located on the inner side of the disc spring body and do not conflict with the position of the disc spring body.

[0011] As a preferred embodiment, the inner cavity of the positioning seat is formed on its bottom wall, and the knob is installed in the positioning seat; this makes the knob structure stable and can be hidden in the positioning seat, so as to protect the knob.

[0012] As a preferred embodiment, the screw rod and the limiting sliding rod are both arranged vertically, and the screw rod is rotatably connected in the fixed sleeve, so that the screw rod can operate stably.

[0013] As a preferred implementation scheme, the screw and the limiting slide rod are parallel to each other and distributed on both sides of the piston plate; when the screw rod is running, it can drive the piston plate, two inner movable blocks and two outer movable blocks to slide along the limiting slide rod, thereby adjusting the position of the scraper.

[0014] In summary, the technical effects and advantages of the utility model are as follows:

[0015] The disc spring assembly of the scraper drives the screw to operate by turning the knob, so that the two inner movable blocks drive the two outer movable blocks, the piston plate and the scraper to move synchronously, and the position of the scraper can be adjusted, so that the disc spring assembly can be adjusted in a wider range on the scraper to adapt to the cleaning work of the inner wall of the casing with different diameters, thereby improving its application range;

[0016] The scraper disc spring assembly, the disc spring assembly consisting of a disc spring inner protection seat, a disc spring module and a scraper, and the scraper with the disc spring assembly are extended into the casing to be cleaned. The scraper drives the scraper disc spring assembly to rotate, and the scraper can be used to scrape the inner wall of the casing, thereby automatically removing the corresponding residues. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model after the scraper is removed;

[0019] Figure 3 It is a vertical cross-sectional view of the utility model.

[0020] In the figure: 1. disc spring inner protection seat; 2. disc spring module; 3. scraper; 4. movable groove; 5. disc spring body; 6. piston plate; 7. limit column; 8. gasket; 9. fixed sleeve; 10. positioning seat; 11. knob; 12. screw; 13. limit slide rod; 14. inner movable block; 15. outer movable block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 3 , a disc spring assembly of a scraper, comprising a disc spring inner protection seat 1, a disc spring module 2 located on the disc spring inner protection seat 1, and a scraper 3 fixed to the outer side of the disc spring inner protection seat 1 for cleaning the inner wall of the casing, the scraper (or scraper) referred to here can refer to the patent with application number CN201521092412.9 in the prior art, a movable groove 4 is formed on the top wall of the disc spring inner protection seat 1, the disc spring module 2 comprises a disc spring body 5 fixedly connected to the bottom wall of the movable groove 4 and a piston plate 6 fixedly connected above the disc spring body 5, wherein the piston plate 6 is welded to the inner wall of the scraper 3;

[0023] A limiting column 7 is fixedly welded at the center of the bottom wall of the movable groove 4, and a gasket 8 is fixedly bonded to the limiting column 7. The gasket 8 can be made of rubber material and is used to contact the piston plate 6 when the disc spring body 5 is subjected to the maximum compression degree to prevent the disc spring body 5 from being further compressed and damaged. The limiting column 7 and the gasket 8 are both located on the inner side of the disc spring body 5 and do not conflict with the position of the disc spring body 5;

[0024] Fixed sleeves 9 are symmetrically welded on the two opposite side walls of the disc spring inner protection seat 1, and a positioning seat 10 is welded on the bottom wall of one of the fixed sleeves 9. A knob 11 is rotatably connected to the positioning seat 10. The inner cavity of the positioning seat 10 is formed on its bottom wall, and the knob 11 is installed in the positioning seat 10, so that the knob 11 can be hidden in the positioning seat 10 while having a stable structure, which is convenient for protecting the knob 11. The inner cavities of the two fixed sleeves 9 are formed on their top walls, and a screw 12 and a limiting slide 13 are respectively provided in the inner cavities of the two fixed sleeves 9, wherein the knob 11 is coaxially connected with the screw 12, and the limiting slide 13 is welded in the other fixed sleeve 9, and the screw 12 and the limiting slide 13 are both vertically arranged, and the screw 12 is rotatably connected in the fixed sleeve 9, so that the screw 12 can operate stably;

[0025] In addition, inner movable blocks 14 are slidably provided in the two fixed sleeves 9, one of the inner movable blocks 14 is threadedly sleeved on the screw 12, and the other inner movable block 14 is slidably sleeved on the limiting slide 13. The two inner movable blocks 14 are respectively welded with outer movable blocks 15 as a whole, and the two outer movable blocks 15 are symmetrically welded to the piston plate 6. The screw 12 and the limiting slide 13 are parallel to each other and distributed on both sides of the piston plate 6, so that when the screw 12 is running, it can drive the piston plate 6, the two inner movable blocks 14 and the two outer movable blocks 15 to slide along the limiting slide 13, thereby adjusting the position of the scraper 3.

[0026] The disc spring assembly of the scraper: during installation, the side of the disc spring inner protection seat 1 facing away from the scraper 3 is fixed to an external attachment device through a common method in the prior art (such as welding), and the disc spring assembly consisting of the disc spring inner protection seat 1, the disc spring module 2 and the scraper 3 and the scraper having the disc spring assembly are inserted into the casing to be cleaned through the external device, and the scraper drives the disc spring assembly of the scraper to rotate, and the scraper 3 can be used to scrape the inner wall of the casing, thereby automatically removing the corresponding residues; when it is necessary to adapt to different diameters When the sleeve is inserted, the screw rod 12 can be driven by rotating the knob 11 to make the piston plate 6, the two inner movable blocks 14 and the two outer movable blocks 15 slide along the limiting slide bar 13 (in fact, the inner movable block 14 connected to the limiting slide bar 13 slides and drives other structures to slide), so that the piston plate 6 drives the scraper 3 to extend and retract, and the disc spring body 5 is also compressed or stretched; if the disc spring body 5 is continuously compressed, the piston plate 6 stops when it contacts the gasket 8, thereby protecting the disc spring body 5 and preventing it from being damaged by excessive compression.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A disc spring assembly for a scraper, comprising a disc spring inner protection seat (1), a disc spring module (2) located on the disc spring inner protection seat (1), and a scraper (3) fixed to the outside of the disc spring inner protection seat (1) for cleaning the inner wall of the casing, characterized in that: The top wall of the disc spring inner protection seat (1) is formed with a movable groove (4), and the disc spring module (2) comprises a disc spring body (5) fixedly connected to the bottom wall of the movable groove (4) and a piston plate (6) fixedly connected above the disc spring body (5), wherein the piston plate (6) is welded to the inner wall of the scraper (3); The two opposite side walls of the disc spring inner protection seat (1) are symmetrically welded with fixed sleeves (9), the bottom wall of one of the fixed sleeves (9) is welded with a positioning seat (10), the positioning seat (10) is rotatably connected with a knob (11), and the inner cavities of the two fixed sleeves (9) are respectively provided with a screw rod (12) and a limiting slide rod (13), wherein the knob (11) is coaxially connected with the screw rod (12), and the limiting slide rod (13) is welded in the other fixed sleeve (9); An inner movable block (14) is slidably disposed in each of the two fixed sleeves (9), one of the inner movable blocks (14) is threadedly sleeved on the screw rod (12), and the other inner movable block (14) is slidably sleeved on the limit slide rod (13), and the two inner movable blocks (14) are respectively integrally welded with an outer movable block (15), and the two outer movable blocks (15) are symmetrically welded to the piston plate (6).

2. A scraper disc spring assembly according to claim 1, characterized in that: A limiting column (7) is fixedly welded at the center of the bottom wall of the movable groove (4), and a gasket (8) is fixedly bonded to the limiting column (7).

3. A scraper disc spring assembly according to claim 1, characterized in that: The inner cavity of the positioning seat (10) is formed on the bottom wall thereof, and the knob (11) is installed in the positioning seat (10).

4. A scraper disc spring assembly according to claim 1, characterized in that: The screw rod (12) and the limiting sliding rod (13) are both arranged vertically, and the screw rod (12) is rotatably connected in the fixing sleeve (9).

5. A scraper disc spring assembly according to claim 1, characterized in that: The screw rod (12) and the limiting sliding rod (13) are parallel to each other and are distributed on both sides of the piston plate (6).

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