High-pressure sealing sleeve

Abstract

The utility model discloses a high-pressure sealing sleeve which comprises a sealing sleeve body, and a flange plate is installed on the outer side of the upper end of the sealing sleeve body. A rotating sleeve is rotationally arranged at the top position of the sealing sleeve body, a threaded rod is in threaded connection with the interior of the rotating sleeve, and the bottom position of the threaded rod is fixed to the top position of a first piston block; an air conveying pipe is arranged at the position, close to the top end of the inner wall of the sealing sleeve body, of the top of the first piston block, the other end of the air conveying pipe extends into an inner ring fixed to the bottom of the sealing sleeve body, and the bottom end of the air conveying pipe communicates with one side of the sealing air bag. The high-pressure sealing sleeve is provided with the sealing air bag, through expansion of the sealing air bag, the outer side of the sealing air bag can be tightly attached to the inner wall position of the installation position, the gap position between the butt joint groove and the installation position can be effectively filled, and the phenomenon of fluid leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure sealing sleeves, and specifically relates to a high-pressure sealing sleeve. Background Technique

[0002] One of the main functions of a high-pressure sealing sleeve is to achieve effective sealing in a high-pressure environment, thereby preventing the leakage of fluids (including liquids and gases). Fluid leakage not only causes waste of materials and loss of energy, but may also cause serious environmental pollution. Therefore, a high-pressure sealing sleeve is required;

[0003] When making a sealed connection at the installation site, especially under high pressure, the force of the high pressure on the sealing sleeve can easily cause leakage between the sealing sleeve and the connection, resulting in fluid leakage, and then directly causing environmental pollution;

[0004] To overcome the above problems in sealed connection, reference can be made to (a high-pressure sealing sleeve device with the publication number CN212804199U, the publication date: March 26, 2021). Components such as a side pressure regulating structure, a circular groove, a circular pressing plate, and an elastic pressing piece are provided on the sealing sleeve, which can drive the side arc pressing plate on the side pressure regulating structure to press more inward when the circular pressing plate is pressed upward, so as to make the sealing performance better

[0005] Although the prior art can achieve better sealing effect through the provided auxiliary mechanism, during continuous use under high pressure, the high-pressure impact can cause the pipe body inside the sealing sleeve to expand. At this time, problems such as loosening and leakage between the sealing sleeve and the connection may occur.

[0006] Therefore, we propose that the high-pressure sealing sleeve can well solve the above problems. Content of the Utility Model

[0007] The purpose of the utility model is to provide a high-pressure sealing sleeve to solve the problem that during continuous use of the sealing sleeve on the current market under high pressure, the high-pressure impact can cause the pipe body inside the sealing sleeve to expand, and at this time, problems such as loosening and leakage between the sealing sleeve and the connection may occur as mentioned in the above background technique.

[0008] To achieve the above purpose, the utility model provides the following technical solution: a high-pressure sealing sleeve, including a sealing sleeve body, and a flange plate is installed on the outer side of the upper end of the sealing sleeve body;

[0009] It further includes: a rotating sleeve is rotatably arranged at the top of the sealing sleeve body, a threaded rod is threadedly connected inside the rotating sleeve, and the bottom of the threaded rod is fixed at the top of a first piston block;

[0010] At the top position of the first piston block, an air delivery pipe is arranged near the top end position of the inner wall of the sealing sleeve body. The other end of the air delivery pipe extends into the inner ring fixed at the bottom position of the sealing sleeve body, and the bottom end position of the air delivery pipe communicates with one side position of the sealing airbag.

[0011] A set of second piston discs is arranged at the position below the first piston block of the sealing sleeve body. Two guiding columns are arranged at the top of the second piston disc. The top positions of the guiding columns are hermetically extended into the position above the first piston block, and damping mechanisms are arranged at the top positions of the guiding columns.

[0012] As a preferred technical solution of the present application, the interior of the sealing sleeve body includes an inner ring fixed at the bottom position of the sealing sleeve body. A docking groove is formed between the inner ring and the bottom end position of the sealing sleeve body. A threaded groove is arranged at the inner position of the bottom end of the sealing sleeve body, and the problem of docking can be realized through the cooperation of the inner ring and the docking groove.

[0013] As a preferred technical solution of the present application, the outer side position of the rotating sleeve is threadedly connected to the installation position, and the outer side position of the sealing airbag is attached to the gap formed between the installation position and the inner ring. Through the cooperation setting of the gap, the docking installation process can be conveniently carried out.

[0014] As a preferred technical solution of the present application, the outer wall of the first piston block is closely attached to the inner wall position of the sealing sleeve body. The first piston block and the interior of the sealing sleeve body form a lifting structure through a threaded rod. Through the upward movement of the first piston block, the gas between the first piston block and the interior of the sealing sleeve body can be transported through the air delivery pipe.

[0015] As a preferred technical solution of the present application, the damping mechanism includes a rotating rod rotatably connected to the top position of the guiding column. The top position of the rotating rod is rotatably connected to the bottom end position of the connecting sleeve. The outer side position of the connecting sleeve is slidably arranged on the outer side of the reciprocating lead screw. Both ends of the reciprocating lead screw are threadedly connected to the inner side of the threaded moving sleeve. The outer side of the threaded moving sleeve is attached to the head end of the return spring, and the tail end of the return spring is attached to the position of the connecting sleeve. A sliding groove is arranged at the top of the sealing sleeve body, and different compressive effects can be realized through the cooperation setting of the damping mechanism.

[0016] As a preferred technical solution of the present application, the inner side of the sliding groove is attached to the outer side of the connecting sleeve, and both ends of the reciprocating lead screw are rotatably arranged inside the sliding groove. The outer side of the threaded moving sleeve is attached to the inner position of the sliding groove, so that the reciprocating lead screw rotates stably inside the sliding groove.

[0017] As a preferred technical solution of the present application, the threaded moving sleeve forms a sliding structure with the inside of the chute through a reciprocating screw rod, and one end of the reciprocating screw rod rotates and extends outside the sealing sleeve body. The position of the end of the reciprocating screw rod extending outside the sealing sleeve body is closed by a gasket, so that the reciprocating screw rod can rotate outside the sealing sleeve body.

[0018] Compared with the prior art, the beneficial effects of the present utility model are set as follows: The high-pressure sealing sleeve is provided with a sealing airbag. Through the inflation of the sealing airbag, the outside of the sealing airbag can be closely attached to the inner wall of the installation position, effectively filling the gap between the docking groove and the installation position, and avoiding the phenomenon of fluid leakage. The specific content is as follows:

[0019] 1. A rotating sleeve is provided. By rotating the rotating sleeve, the threaded rod can be driven to move, and the first piston block fixed at the bottom of the threaded rod can slide inside the sealing sleeve body. The first piston block drives the gas to be transported to the inside of the sealing airbag through the air delivery pipe, so that the sealing airbag is closely attached to the gap between the docking groove and the installation position, effectively preventing gas leakage.

[0020] Furthermore, a threaded groove is provided. Through the cooperative setting of the threaded groove, the outside position of the threaded groove can be closely docked with the installation position, facilitating the docking work.

[0021] 2. A second piston disc is provided. When pressure acts on the bottom position of the second piston disc, the bottom position of the second piston disc will drive the guide post fixed at the top position of the second piston disc to move. The top of the guide post drives the rotating rod to move, and the top position of the rotating rod drives the connecting sleeve to slide outside the reciprocating screw rod to perform pressure resistance treatment.

[0022] Furthermore, a reciprocating screw rod is provided. By rotating the reciprocating screw rod, the threaded moving sleeve connected by threads can move inside the chute, so that the threaded moving sleeve squeezes the outside of the return spring, causing the return spring to deform, thereby adapting to different pressure states. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the front view structural schematic diagram of the present utility model;

[0024] Figure 2 It is the front view sectional structural schematic diagram of the sealing sleeve body of the present utility model;

[0025] Figure 3 For the present utility model Figure 2 The enlarged structural schematic diagram at position A;

[0026] Figure 4 This is the front view structural schematic diagram of the reciprocating lead screw of the present utility model;

[0027] Figure 5 This is the partial bottom view structural schematic diagram of the sealing sleeve body of the present utility model;

[0028] Figure 6 This is the front view structural schematic diagram of the rotating rod of the present utility model.

[0029] In the figure: 1. Sealing sleeve body; 101. Inner ring; 102. Docking groove; 103. Thread groove; 2. Flange; 3. Rotating sleeve; 4. Threaded rod; 5. First piston block; 6. Air delivery pipe; 7. Sealing airbag; 8. Second piston disc; 9. Guide post; 10. Rotating rod; 11. Connecting sleeve; 12. Reciprocating lead screw; 13. Threaded moving sleeve; 14. Return spring; 15. Chute. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figures 1-6 , the present utility model provides the following technical solutions:

[0032] Embodiment 1: To solve the problem that in the continuous use of high pressure in the market, the high-pressure impact can cause the expansion of the pipe body inside the sealing sleeve, which can lead to loosening and leakage at the connection between the sealing sleeve and the joint, reference can be made to the attached Figure 1 - attached Figure 4, including a sealing sleeve body 1, and a flange 2 is installed on the outer side of the upper end of the sealing sleeve body 1; further comprising: a rotating sleeve 3 is rotatably arranged at the top of the sealing sleeve body 1, a threaded rod 4 is threadedly connected inside the rotating sleeve 3, and the bottom of the threaded rod 4 is fixed at the top of the first piston block 5; an air delivery pipe 6 is arranged at the top of the first piston block 5 near the inner wall top of the sealing sleeve body 1, and the other end of the air delivery pipe 6 extends into the inner ring 101 fixed at the bottom of the sealing sleeve body 1, and the bottom end of the air delivery pipe 6 communicates with one side of the sealed airbag 7; the inside of the sealing sleeve body 1 includes an inner ring 101 fixed at the bottom of the sealing sleeve body 1, a docking groove 102 is formed between the inner ring 101 and the bottom end of the sealing sleeve body 1, and a threaded groove 103 is formed inside the bottom end of the sealing sleeve body 1. A mounting position is threadedly connected to the outer side of the threaded groove 103, and the outer side of the sealed airbag 7 fits in the gap formed between the mounting position and the inner ring 101. The outer wall of the first piston block 5 is closely attached to the inner wall of the sealing sleeve body 1, and the first piston block 5 and the inside of the sealing sleeve body 1 constitute a lifting structure through the threaded rod 4.

[0033] When using the sealing sleeve body 1, first rotate the sealing sleeve body 1 so that the mounting position is threadedly connected to the threaded groove 103 provided at the bottom of the sealing sleeve body 1. At this time, the inner wall of the installation pipe fits inside the docking groove 102, and at this time, the outer side of the sealed airbag 7 fits against the inner wall of the installation pipe. Then, by rotating the rotating sleeve 3, the threaded rod 4 threadedly connected to the bottom end of the rotating sleeve 3 moves, so that the first piston block 5 fixed at the bottom of the threaded rod 4 slides stably and sealingly through the guide post 9, causing the first piston block 5 to move upward inside the sealing sleeve body 1, and the gas between the first piston block 5 and the sealing sleeve body 1 is conveyed through the air delivery pipe 6. Since the bottom end of the air delivery pipe 6 extends into the inner ring 101 and is connected to the sealed airbag 7, the sealed airbag 7 expands. At this time, the outer side of the sealed airbag 7 is closely attached to the inner wall of the installation pipe. At this time, when in a high-pressure state, the sealed airbag 7 is more closely attached to the installation position, and then the locking process is carried out through the provided flange 2, thus achieving a stable airtight effect.

[0034] Embodiment 2: When in use, in order to adapt to the sealing of different high-pressure gases, reference can be made to the attached Figure 1 - attached Figure 6, a set of second piston discs 8 are arranged at a position below the sealing sleeve body 1 close to the first piston block 5. Two sets of guide posts 9 are arranged at the top of the second piston disc 8. The top positions of the guide posts 9 are hermetically extended into the position above the first piston block 5, and damping mechanisms are arranged at the top positions of the guide posts 9. The damping mechanism includes a rotating rod 10 rotatably connected to the top position of the guide post 9. The top position of the rotating rod 10 is rotatably connected to the bottom end position of the connecting sleeve 11. The outer side of the connecting sleeve 11 is slidably arranged on the outer side of the reciprocating lead screw 12. Both ends of the reciprocating lead screw 12 are threadedly connected to the inner side of the threaded moving sleeve 13. The outer side of the threaded moving sleeve 13 abuts against the head end of the return spring 14. The tail end of the return spring 14 abuts against the position of the connecting sleeve 11. A chute 15 is opened at the top of the sealing sleeve body 1. The inner side of the chute 15 abuts against the outer side of the connecting sleeve 11. Both ends of the reciprocating lead screw 12 are rotatably arranged inside the chute 15. The outer side of the threaded moving sleeve 13 abuts against the inner position of the chute 15. The threaded moving sleeve 13 forms a sliding structure with the inside of the chute 15 through the reciprocating lead screw 12. One end of the reciprocating lead screw 12 is rotatably extended outside the sealing sleeve body 1, and the end of the reciprocating lead screw 12 extending outside the sealing sleeve body 1 is closed through a sealing gasket.

[0035] In order to adjust the compressive effect, at this time, by rotating the two sets of reciprocating lead screws 12, the reciprocating lead screws 12 rotate in the chute 15 opened at the upper position inside the sealing sleeve body 1. Since the reciprocating lead screw 12 and the threaded moving sleeve 13 are threadedly connected, the threaded moving sleeve 13 can stably slide inside the chute 15. One side of the threaded moving sleeve 13 will squeeze the return spring 14 through the cooperation of the connecting sleeve 11. At this time, the shape of the return spring 14 changes, resulting in a change in the damping effect. At this time, when the second piston disc 8 bears pressure, the outer side of the guide post 9 will slide inside the first piston block 5, enabling the rotating rod 10 rotatably arranged at the top of the guide post 9 to drive the connecting sleeve 11 to squeeze on the outer side of the reciprocating lead screw 12, and causing the position of one side of the reciprocating lead screw 12 to drive the return spring 14 to deform again. In addition, the provided return spring 14 will cooperate with different reciprocating lead screws 12 synchronously to achieve different compressive effects.

[0036] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-pressure sealing sleeve, comprising a sealing sleeve body (1), wherein a flange (2) is installed at the outer position of the upper end of the sealing sleeve body (1); It is characterized in that Also includes: A rotating sleeve (3) is rotatably arranged at the top of the sealing sleeve body (1); a threaded rod (4) is connected to the inner thread of the rotating sleeve (3); and the bottom of the threaded rod (4) is fixed at the top of the first piston block (5); An air delivery pipe (6) is provided at the top of the first piston block (5) near the top of the inner wall of the sealing sleeve body (1), the other end of the air delivery pipe (6) extends into the inner ring (101) fixed at the bottom of the sealing sleeve body (1), and the bottom end of the air delivery pipe (6) is connected to one side of the sealing airbag (7); A group of second piston discs (8) are arranged on the sealing sleeve body (1) at a position below the first piston block (5), two groups of guide columns (9) are arranged on the top of the second piston disc (8), the top of the guide columns (9) are sealed and extend into the upper position of the first piston block (5), and a damping mechanism is arranged on the top of the guide columns (9).

2. A high pressure sealing sleeve according to claim 1, characterized in that: The interior of the sealing sleeve body (1) comprises an inner ring (101) fixed at the bottom position of the sealing sleeve body (1), a docking groove (102) is formed between the inner ring (101) and the bottom end position of the sealing sleeve body (1), and a threaded groove (103) is provided at the inner position of the bottom end of the sealing sleeve body (1).

3. A high pressure sealing sleeve according to claim 2, characterized in that: The outer side of the thread groove (103) is threadedly connected to the installation position, and the outer side of the sealing airbag (7) fits into the gap formed by the installation position and the inner ring (101).

4. A high pressure sealing sleeve according to claim 1, characterized in that: The outer wall of the first piston block (5) is in close contact with the inner wall of the sealing sleeve body (1), and the first piston block (5) forms a lifting structure with the interior of the sealing sleeve body (1) through the threaded rod (4).

5. The high pressure sealing sleeve according to claim 1, characterized in that: The damping mechanism comprises a rotating rod (10) rotatably connected to the top position of the guide column (9); the top position of the rotating rod (10) is rotatably connected to the bottom position of the connecting sleeve (11); the outer position of the connecting sleeve (11) is slidably arranged on the outer side of the reciprocating screw rod (12); the outer sides of both ends of the reciprocating screw rod (12) are threadedly connected to the inner side of the threaded movable sleeve (13); the outer side of the threaded movable sleeve (13) is affixed to the head end of the reset spring (14); the tail end of the reset spring (14) is affixed to the position of the connecting sleeve (11); and a sliding groove (15) is provided on the top of the sealing sleeve body (1).

6. A high pressure sealing sleeve according to claim 5, characterized in that: The inner side of the slide groove (15) is fitted on the outer side of the connecting sleeve (11), and the two ends of the reciprocating screw rod (12) are rotatably arranged inside the slide groove (15), and the outer side of the threaded movable sleeve (13) is fitted on the inner position of the slide groove (15).

7. A high pressure sealing sleeve according to claim 5, characterized in that: The threaded movable sleeve (13) forms a sliding structure between the reciprocating screw rod (12) and the inside of the slide groove (15), and one end of the reciprocating screw rod (12) is rotated to extend out of the outside of the sealing sleeve body (1), and the end of the reciprocating screw rod (12) extending out of the outside of the sealing sleeve body (1) is closed by a sealing gasket.

Images