Leakage-proof sealing sleeve for oil pipe joint

Abstract

The utility model relates to the field of oil pipe sealing sleeves, in particular to a leakage-proof sealing sleeve for an oil pipe joint, and adopts the technical scheme that the leakage-proof sealing sleeve for the oil pipe joint comprises an oil pipe main body, a sealing sleeve main body, a threaded cap, a rubber sleeve and a metal limiting ring. The rubber sleeve and the rubber ring piece can perform primary inner sealing treatment on the oil pipe main body installed in the connector, and the metal mutual ring and the metal barb are matched to position the oil pipe main body installed in the connector and prevent the oil pipe main body from accidentally falling off from the interior of the connector. A first rubber ring and a third rubber ring can be used for filling and sealing two gaps at the joint of the first threaded cylinder and the oil pipe main body, so that external sealing treatment on the oil pipe main body is realized, and the sealing performance of the oil pipe main body during mounting and use is greatly improved; the problems that an existing oil pipe connector sealing sleeve is poor in leakproofness in the using process, and an oil pipe is prone to falling off are solved.

Description

Technical Field

[0001] This utility model belongs to the field of oil pipe sealing sleeves, specifically relating to an oil pipe joint anti-leakage sealing sleeve. Background Technology

[0002] Pipe joint leak-proof sealing sleeves are generally used to seal the connection of oil pipes to prevent oil leakage. They can be used in industries such as petroleum, natural gas and chemicals, especially when working in high pressure or high temperature environments.

[0003] Most existing oil pipe sealing sleeves use various sealing gaskets to fill and seal the gap between the oil pipe joint and the oil pipe. However, the effectiveness of this single sealing method often decreases due to the aging of the sealing gaskets during actual use. Furthermore, the single sealing structure is difficult to ensure that the oil pipe will not fall off during use, thus affecting the firmness and airtightness of the oil pipe during installation and use.

[0004] Therefore, in response to the problems of poor sealing performance and easy detachment of the oil pipe joint sealing sleeve during use, the sealing performance of the oil pipe joint sealing sleeve can be greatly improved by adding an inner and outer double-layer sealing structure, an arc-shaped limiting structure and a barbed limiting structure, and the possibility of the oil pipe accidentally detaching from the joint. Utility Model Content

[0005] In order to overcome the problems of poor sealing performance of existing oil pipe joint sealing sleeves and easy detachment of oil pipes during use.

[0006] The technical solution of this utility model is as follows: a leak-proof sealing sleeve for an oil pipe joint, including an oil pipe body, a sealing sleeve body, a threaded cap, a rubber sleeve, and a metal limiting ring. The outer wall of the rubber sleeve is provided with a thickened layer and several sets of rubber rings evenly distributed from front to back. Several sets of metal barbs evenly distributed and symmetrically arranged around the inner wall edge of the metal limiting ring are fixedly connected. A first groove is opened at the front edge of the sealing sleeve body, and a first rubber ring is installed in the first groove. A second rubber ring is installed at the rear edge of the sealing sleeve body, and a third rubber ring is installed on the front inner wall of the threaded cap.

[0007] Preferably, a first threaded cylinder is fixedly connected to the front end of the sealing sleeve body, a second threaded cylinder is fixedly connected to the rear end of the sealing sleeve body, and a metal limiting ring is disposed on the outer wall of the thickened layer.

[0008] Preferably, a limiting groove is provided on the inner wall of the front end of the first threaded cylinder, and a second groove is provided through the rear end of the threaded cap.

[0009] Preferably, the first threaded cylinder, the sealing sleeve body, and the second threaded cylinder are interconnected, and the threaded cap is adapted to the first threaded cylinder.

[0010] Preferably, the outer wall of the metal limiting ring fits into the inner wall of the limiting groove, and both the metal limiting ring and the limiting groove are semi-circular.

[0011] Preferably, the outer walls of the rubber ring and the rubber sleeve are in contact with the inner walls of the first threaded cylinder, the sealing sleeve body, and the second threaded cylinder.

[0012] Preferably, the metal barbs correspond one-to-one with and are in contact with the thickened layer, the rear end of the third rubber ring is in contact with the front end of the first threaded cylinder, and the front end of the first rubber ring is in contact with the rear end of the threaded cap.

[0013] The beneficial effects of this utility model are:

[0014] 1. By using several sets of rubber rings on the rubber sleeve, the main body of the oil pipe can be tightly installed in the connector consisting of the first threaded cylinder, the sealing sleeve body and the second threaded cylinder, and the oil pipe body installed therein can be initially sealed.

[0015] 2. By turning the threaded cap, the metal limiting ring can be pushed to slide backward along the inner wall of the limiting groove, so as to drive the metal barb to pierce into the thickened layer on the rubber sleeve, thereby positioning the oil pipe body installed in the connector and preventing it from accidentally falling out of the connector.

[0016] 3. The first and third rubber rings can fill and seal the two gaps at the connection between the first threaded cylinder and the main body of the oil pipe, thereby achieving external sealing treatment of the main body of the oil pipe and greatly improving the airtightness of the main body of the oil pipe during installation and use. Attached Figure Description

[0017] Figure 1 The diagram shows a three-dimensional structural schematic of the leak-proof sealing sleeve for the oil pipe joint of this utility model.

[0018] Figure 2 The diagram shown is a three-dimensional disassembled view of the leak-proof sealing sleeve for the oil pipe joint of this utility model.

[0019] Figure 3 The diagram shows a first three-dimensional structural schematic of the sealing sleeve body, the first rubber ring, and the second rubber ring of the oil pipe joint anti-leakage sealing sleeve of this utility model.

[0020] Figure 4 The diagram shown is a split view of the sealing sleeve body, the first rubber ring, and the second rubber ring of the oil pipe joint anti-leakage sealing sleeve of this utility model.

[0021] Figure 5 The diagram shows a three-dimensional structure of the metal limiting ring of the leak-proof sealing sleeve for the oil pipe joint of this utility model.

[0022] Figure 6 The diagram shows a three-dimensional structural representation of the oil pipe body and rubber sleeve of the oil pipe joint leak-proof sealing sleeve of this utility model;

[0023] Figure 7 The diagram shows a three-dimensional structure of the threaded cap and the third rubber ring of the oil pipe joint anti-leakage sealing sleeve of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1-Sealing sleeve body, 2-Threaded cap, 3-Oil pipe body, 4-Rubber sleeve, 5-Metal limiting ring, 6-First threaded cylinder, 7-Limiting groove, 8-First groove body, 9-First rubber ring, 10-Second rubber ring, 11-Second threaded cylinder, 12-Metal barb, 13-Rubber ring piece, 14-Thickened layer, 15-Third rubber ring, 16-Second groove body. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Please see Figures 1-7 This utility model provides an embodiment: a leak-proof sealing sleeve for an oil pipe joint, including an oil pipe body 3, a sealing sleeve body 1, a threaded cap 2, a rubber sleeve 4, and a metal limiting ring 5. The outer wall of the rubber sleeve 4 is provided with a thickened layer 14 and several sets of rubber rings 13 distributed at equal intervals from front to back. Several sets of metal barbs 12, distributed at equal intervals and symmetrically arranged around the inner wall of the metal limiting ring 5, are fixed at the inner edge of the inner wall. A first groove 8 is provided at the front edge of the sealing sleeve body 1, and a first rubber ring 9 is installed in the first groove 8. A second rubber ring 10 is installed at the rear edge of the sealing sleeve body 1, and a third rubber ring 15 is installed on the inner wall of the front end of the threaded cap 2.

[0027] The rubber sleeve 4 has several sets of rubber rings 13, which can tightly install the oil pipe body 3 into the connector composed of the first threaded cylinder 6, the sealing sleeve body 1, and the second threaded cylinder 11, and perform preliminary internal sealing treatment on the oil pipe body 3 installed therein. Tightening the threaded cap 2 can push the metal limiting ring 5 to slide backward along the inner wall of the limiting groove 7, so as to drive the metal barb 12 to pierce into the thickened layer 14 on the rubber sleeve 4, thereby positioning the oil pipe body 3 installed in the connector and preventing it from accidentally falling out of the connector. The first rubber ring 9 and the third rubber ring 15 can fill and seal the two gaps at the connection between the first threaded cylinder 6 and the oil pipe body 3, so as to achieve external sealing treatment of the oil pipe body 3, thereby greatly improving the airtightness of the oil pipe body 3 during installation and use.

[0028] Please see Figures 3-4In this embodiment, a first threaded cylinder 6 is fixedly connected to the front end of the sealing sleeve body 1, and a second threaded cylinder 11 is fixedly connected to the rear end of the sealing sleeve body 1. A metal limiting ring 5 is disposed on the outer wall of the thickened layer 14. In use, the second threaded cylinder 11 is used to connect the threaded interface of the instrument, so that the user can quickly install the connector composed of the first threaded cylinder 6, the sealing sleeve body 1 and the second threaded cylinder 11 onto the instrument that needs oil supply. A limiting groove 7 is opened on the inner wall of the front end of the first threaded cylinder 6, and a second groove 16 is opened through the rear end of the threaded cap 2. In use, the threaded cap 2 can facilitate the user to fix the part of the oil pipe body 3 that is installed in the connector composed of the first threaded cylinder 6, the sealing sleeve body 1 and the second threaded cylinder 11, thereby improving the convenience of the sealing sleeve in use.

[0029] Please see Figures 3-5 In this embodiment, the first threaded cylinder 6, the sealing sleeve body 1, and the second threaded cylinder 11 are interconnected. The threaded cap 2 is adapted to the first threaded cylinder 6. In use, the first threaded cylinder 6, the sealing sleeve body 1, and the second threaded cylinder 11 are interconnected to form a connecting pipe to ensure the smooth flow of oil in the oil pipe body 3. The outer wall of the metal limiting ring 5 is in contact with the inner wall of the limiting groove 7. Both the metal limiting ring 5 and the limiting groove 7 are semi-arc. In use, the semi-arc metal limiting ring 5 can be automatically positioned after being installed in the limiting groove 7 and prevent it from falling out of the limiting groove 7, thus playing a role in limiting and assisting the oil pipe body 3.

[0030] Please see Figures 3-7 In this embodiment, the outer walls of the rubber ring 13 and the rubber sleeve 4 are both in contact with the inner walls of the first threaded cylinder 6, the sealing sleeve body 1, and the second threaded cylinder 11. In use, the rubber sleeve 4 can increase the fit of the oil pipe body 3 in the connector composed of the first threaded cylinder 6, the sealing sleeve body 1, and the second threaded cylinder 11, thereby ensuring the connection's firmness while also improving its sealing performance. The metal barb 12 corresponds to and contacts the thickened layer 14. The rear end of the third rubber ring 15 is in contact with the front end of the first threaded cylinder 6, and the front end of the first rubber ring 9 is in contact with the rear end of the threaded cap 2. In use, the metal barb 12 can be squeezed into the thickened layer 14 of the rubber sleeve 4 as the threaded cap 2 rotates, thereby limiting and fixing the oil pipe body 3 and preventing it from falling out of the connector composed of the first threaded cylinder 6, the sealing sleeve body 1, and the second threaded cylinder 11.

[0031] Before use, first thread the second threaded cylinder 11 onto the instrument that needs oil supply, and make the second rubber ring 10 fill the gap between the second threaded cylinder 11 and the instrument connector to ensure the sealing of the connection.

[0032] Next, the tubing body 3 and the rubber sleeve 4 are inserted into the connector consisting of the first threaded cylinder 6, the sealing sleeve body 1, and the second threaded cylinder 11, so that the rubber ring 13 and the metal limiting ring 5 are tightly attached to the inner wall of the connector and the edge entrance of the limiting groove 7, respectively.

[0033] Then, the threaded cap 2, which is set on the outer wall of the tubing body 3, is threaded onto the first threaded cylinder 6 and screwed on, so that the threaded cap 2 squeezes the metal limiting ring 5 into the limiting groove 7. As the metal limiting ring 5 is installed in place, it will drive the metal barb 12 to pierce into the thickened layer 14 of the rubber sleeve 4, so as to internally seal and fix the rubber sleeve 4 and the tubing body 3.

[0034] Then, as the threaded cap 2 is installed in place, the first rubber ring 9 and the third rubber ring 15 will fill and seal the gap at the connection between the threaded cap 2 and the first threaded cylinder 6, thereby completing the installation of the device.

[0035] Through the above steps, the rubber sleeve 4, with its several sets of rubber rings 13, allows the oil pipe body 3 to be tightly installed inside the connector composed of the first threaded cylinder 6, the sealing sleeve body 1, and the second threaded cylinder 11, thus providing a preliminary internal seal for the oil pipe body 3. Tightening the threaded cap 2 pushes the metal limiting ring 5 to slide backward along the inner wall of the limiting groove 7, causing the metal barb 12 to pierce into the thickened layer 14 on the rubber sleeve 4. This positions the oil pipe body 3 inside the connector while preventing it from accidentally falling out. The first rubber ring 9 and the third rubber ring 15 fill and seal the two gaps at the connection between the first threaded cylinder 6 and the oil pipe body 3, thus providing an external seal for the oil pipe body 3. This significantly improves the airtightness of the oil pipe body 3 during installation and use, thereby solving the problem of poor airtightness and easy detachment of the existing oil pipe joint sealing sleeve during use.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A leak-proof sealing sleeve for an oil pipe joint, comprising an oil pipe body (3), characterized in that: It also includes a sealing sleeve body (1), a threaded cap (2), a rubber sleeve (4) and a metal limiting ring (5). The outer wall of the rubber sleeve (4) is provided with a thickened layer (14) and several sets of rubber rings (13) distributed at equal intervals from front to back. Several sets of metal barbs (12) are fixedly connected to the inner wall edge of the metal limiting ring (5) and are distributed at equal intervals and symmetrically front and back around the inner wall of the metal limiting ring (5). A first groove (8) is opened at the front edge of the sealing sleeve body (1). A first rubber ring (9) is installed in the first groove (8). A second rubber ring (10) is installed at the rear edge of the sealing sleeve body (1). A third rubber ring (15) is installed on the front inner wall of the threaded cap (2).

2. The leak-proof sealing sleeve for the oil pipe joint according to claim 1, characterized in that: The front end of the sealing sleeve body (1) is fixedly connected to the first threaded cylinder (6), the rear end of the sealing sleeve body (1) is fixedly connected to the second threaded cylinder (11), and the metal limiting ring (5) is disposed on the outer wall of the thickened layer (14).

3. The leak-proof sealing sleeve for the oil pipe joint according to claim 2, characterized in that: The front end of the first threaded cylinder (6) has a limiting groove (7) on its inner wall, and the rear end of the threaded cap (2) has a second groove (16) through it.

4. The leak-proof sealing sleeve for the oil pipe joint according to claim 3, characterized in that: The first threaded cylinder (6), the sealing sleeve body (1), and the second threaded cylinder (11) are interconnected, and the threaded cap (2) is adapted to the first threaded cylinder (6).

5. The leak-proof sealing sleeve for the oil pipe joint according to claim 4, characterized in that: The outer wall of the metal limiting ring (5) fits against the inner wall of the limiting groove (7), and both the metal limiting ring (5) and the limiting groove (7) are semi-arc-shaped.

6. The leak-proof sealing sleeve for the oil pipe joint according to claim 5, characterized in that: The outer walls of the rubber ring (13) and the rubber sleeve (4) are in contact with the inner walls of the first threaded cylinder (6), the sealing sleeve body (1), and the second threaded cylinder (11).

7. The leak-proof sealing sleeve for the oil pipe joint according to claim 6, characterized in that: The metal barb (12) corresponds to and contacts the thickened layer (14). The rear end of the third rubber ring (15) is in contact with the front end of the first threaded cylinder (6). The front end of the first rubber ring (9) is in contact with the rear end of the threaded cap (2).

Images