Rapid sealing device for airtightness detection of stainless steel corrugated hose

Abstract

The stainless steel corrugated hose air tightness detection rapid sealing device comprises a wrapping pipe (1), one end of the sealing device is located in the wrapping pipe (1), a push-pull piece for controlling the sealing device is arranged at the end, located outside the wrapping pipe (1), of the sealing device, and the sealing device comprises an inner expansion block (2) located in the wrapping pipe (1). A fixing rod (11) and a compression outer sleeve (9) are arranged on the two sides of the inner expansion block (2), the push-pull piece comprises a handle (8) arranged at the end of the compression outer sleeve (9) and a compression spring (5) arranged in the compression outer sleeve (9), the sealing device is controlled through the push-pull piece, the inner expansion sleeve extrudes and wraps the pipe (1) through extrusion of the inner expansion block (2), and then the sealing effect is achieved. Static friction between a sealing device and a product when an existing structure is assembled and disassembled is eliminated, the surface of the product is prevented from being scratched by the sealing device, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrugated pipes, and specifically relates to a stainless steel corrugated hose air tightness detection quick sealing device. Background Art

[0002] The sealing test methods for stainless steel corrugated hoses mainly include air testing and water testing. The sealing device for air tightness testing is a split sliding type, which is large in size and belongs to an external sealing structure. Therefore, it cannot meet the requirements of corrugated hose testing with a coating layer.

[0003] Patent No. 202223080360.6, a public specification published on April 7, 2023, discloses a positive pressure helium mass spectrometry air tightness detection device for a metal corrugated hose assembly, which includes a metal corrugated hose assembly, a sealing device and a sealing cover; the sealing device includes an inflation end seal and a sealing end seal, and the inflation end seal uses a sealing ring on an extruded inclined surface for sealing, which solves the problem of small contact area due to the inclined surface structure at the joint of the metal corrugated hose assembly during thread sealing, and the sealing ring is twisted and deformed and torn during the tightening of the thread during the inclined surface sealing, resulting in poor sealing effect, and ensures that a through hole position is left in the center; the sealing end seal adopts a sealing plug and a sealing sleeve point contact method, which avoids the twisting and tearing of the sealing ring when the thread is tightened, solves the problem of loose sealing caused by the twisting deformation of the sealing ring, and does not need to reserve a center hole position, which is simpler in form. The sealed hose is connected to the sealing cover in the form of a tapered pipe thread connection for air tightness detection.

[0004] The existing air tightness detection sealing device is heavy, inconvenient to carry, and has poor sealing performance after installation; due to the external sealing structure, the corrugated hose with the coating layer cannot be detected. Utility Model Content

[0005] The utility model aims to provide a stainless steel corrugated hose air tightness detection quick sealing device which is easy to operate.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a stainless steel corrugated hose air tightness detection quick sealing device, including a covering tube, one end of the sealing device is located inside the covering tube, and the end of the sealing device located outside the covering tube is provided with a push-pull member for controlling the sealing device.

[0007] The sealing device comprises an inner expansion block located in the sheathing tube, a fixing rod and a compression sleeve are arranged on both sides of the inner expansion block, and the push-pull member comprises a handle arranged at the end of the compression sleeve and a compression spring arranged in the compression sleeve.

[0008] The fixing rod is T-shaped, the inner expansion block is arranged on the fixing rod, a movable sleeve is sleeved on the fixing rod, and the inner expansion block is arranged between the movable sleeve and the head of the fixing rod.

[0009] A compression inner core is arranged in the compression outer sleeve, and the fixing rod is connected with the compression inner core through a thread.

[0010] An air passage is arranged inside the compression inner core and the fixing rod, and an ED plug is arranged at the end of the air passage.

[0011] The compression spring is arranged between the compression inner core and the compression outer sleeve.

[0012] A pin is arranged between the handle and the compression sleeve.

[0013] A round ball is arranged on the outer side of the compression jacket.

[0014] The compression inner core is slidably arranged in the compression outer sleeve.

[0015] The movable sleeve is in a truncated cone shape, the movable sleeve is in contact with the compression outer sleeve, and the inner expansion block is a rubber block.

[0016] The technical effects of the utility model are as follows: the sealing device is controlled by a push-pull member, and the inner expansion sleeve is squeezed by the extrusion of the inner expansion block to achieve a sealing effect; the covering tube is limited by a spherical ball to prevent the covering tube from falling off; the static friction between the sealing device and the product during the installation and disassembly of the existing structure is eliminated, the product surface is avoided from being scratched by the sealing device, and the product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification includes the following drawings, which show the following contents:

[0018] Figure 1 This is a schematic diagram of the structure of a stainless steel corrugated hose air tightness detection quick sealing device of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of a stainless steel corrugated hose air tightness detection quick sealing device in an unused state;

[0020] Figure 3 for Figure 1 A schematic diagram of the use status of a quick sealing device for detecting air tightness of a stainless steel corrugated hose;

[0021] Figure 4 for Figure 1 A schematic diagram of the inner expansion block of a quick sealing device for air tightness detection of a stainless steel corrugated hose.

[0022] The markings in the figure are: 1. Covering tube; 2. Internal expansion block; 3. Ball; 4. Compression inner core; 5. Compression spring; 6. ED plug; 7. Pin shaft; 8. Handle; 9. Compression sleeve; 10. Moving sleeve; 11. Fixed rod. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and facilitating its implementation.

[0024] See also Figure 1-4 A stainless steel corrugated hose air tightness detection quick sealing device comprises a covering tube 1, one end of the sealing device is located inside the covering tube 1, and the end of the sealing device located outside the covering tube 1 is provided with a push-pull member for controlling the sealing device; the push-pull member is used to control the sealing device, and when sealing the covering tube 1, the sealing device is first inserted into the covering tube 1, and then the push-pull member is used to control the sealing device to complete the sealing of the covering tube 1 by the sealing device.

[0025] The sealing device includes an inner expansion block 2 located in the sheathing tube 1, with fixing rods 11 and a compression sleeve 9 provided on both sides of the inner expansion block 2, and the push-pull member includes a handle 8 arranged at the end of the compression sleeve 9 and a compression spring 5 arranged in the compression sleeve 9.

[0026] The compression sleeve 9 and the fixed rod 11 are squeezed together to squeeze the inner expansion block 2 between the compression sleeve 9 and the fixed rod 11. The inner expansion block 2 is squeezed to contact the inner wall of the sheathing tube 1, thereby completing the sealing of the sheathing tube 1. The position of the fixed rod 11 is controlled by the handle 8 and the compression spring 5 to achieve the squeezing or relaxation of the inner expansion block 2.

[0027] The fixed rod 11 is T-shaped, the inner expansion block 2 is arranged on the fixed rod 11, the fixed rod 11 is sleeved with a movable sleeve 10, and the inner expansion block 2 is arranged between the movable sleeve 10 and the head of the fixed rod 11; the fixed rod 11 and the movable sleeve 10 are brought close to each other to achieve the extrusion of the inner expansion block 2.

[0028] A compression core 4 is provided inside the compression outer sleeve 9, and a fixing rod 11 is connected to the compression core 4 through a thread; the fixing rod 11 is connected to the compression core 4, so that when the movement of the compression core 4 is controlled, the fixing rod 11 can also be driven to move, and the movement of the fixing rod 11 inside the covering tube 1 can be controlled from the outside of the covering tube 1, which is convenient for operation.

[0029] An air passage is provided inside the compression inner core 4 and the fixing rod 11 , and an ED plug 6 is provided at the end of the air passage; the air pressure inside the sheathing tube 1 can be controlled by disassembling and assembling the ED plug 6 , which facilitates the disassembly and assembly of the sealing device.

[0030] The compression spring 5 is arranged between the compression inner core 4 and the compression outer sleeve 9; when the compression inner core 4 is not squeezed by the handle 8, the compression spring 5 will push the compression inner core 4 outward, so as to achieve the purpose of pulling the fixed rod 11 to move, the fixed rod 11 moves outward, the movable sleeve 10 contacts with the compression outer sleeve 9, and the fixed rod 11 continues to move outward driven by the compression spring 5, thereby realizing the squeezing of the movable sleeve 10 by the compression outer sleeve 9, so as to achieve the purpose of squeezing the inner expansion block 2.

[0031] A pin shaft 7 is provided between the handle 8 and the compression sleeve 9 , so that the handle 8 can rotate around the pin shaft 7 to control the position of the compression core 4 .

[0032] A ball 3 is disposed on the outside of the compression sleeve 9; the ball 3 limits the sheathing tube 1 so as to prevent the sheathing tube 1 from falling off the sealing device.

[0033] The compression inner core 4 is slidably disposed in the compression outer shell 9, so that the compression outer shell 9 protects the compression inner core 4 and prevents the compression inner core 4 from falling off.

[0034] The movable sleeve 10 is in a truncated cone shape, and the movable sleeve 10 contacts the compression outer sleeve 9. The inner expansion block 2 is a rubber block. The truncated cone-shaped movable sleeve 10 can better squeeze the inner expansion block 2, and the rubber block has good elasticity.

[0035] The technical effects of the utility model are as follows: the sealing device is controlled by a push-pull member, and the inner expansion sleeve is squeezed by the inner expansion block 2 to achieve a sealing effect; the coating tube 1 is limited by the spherical ball 3 to prevent the coating tube 1 from falling off; the static friction between the sealing device and the product during the installation and disassembly of the existing structure is eliminated, the product surface is avoided from being scratched by the sealing device, and the product quality is improved.

[0036] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A stainless steel corrugated hose air tightness detection quick sealing device, characterized in that: It comprises a covering tube (1), one end of the sealing device is located inside the covering tube (1), and the other end of the sealing device located outside the covering tube (1) is provided with a push-pull member for controlling the sealing device.

2. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 1, characterized in that: The sealing device comprises an inner expansion block (2) located in the sheathing tube (1), and fixing rods (11) and a compression sleeve (9) are provided on both sides of the inner expansion block (2). The push-pull member comprises a handle (8) arranged at the end of the compression sleeve (9) and a compression spring (5) arranged in the compression sleeve (9).

3. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 2, characterized in that: The fixed rod (11) is T-shaped, the inner expansion block (2) is arranged on the fixed rod (11), a movable sleeve (10) is sleeved on the fixed rod (11), and the inner expansion block (2) is arranged between the movable sleeve (10) and the head of the fixed rod (11).

4. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 2 or 3, characterized in that: A compression inner core (4) is arranged inside the compression outer sleeve (9), and the fixing rod (11) is connected to the compression inner core (4) via threads.

5. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 4, characterized in that: An air passage is provided inside the compression inner core (4) and the fixing rod (11), and an ED plug (6) is provided at the end of the air passage.

6. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 4, characterized in that: The compression spring (5) is arranged between the compression inner core (4) and the compression outer sleeve (9).

7. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 2, characterized in that: A pin shaft (7) is provided between the handle (8) and the compression sleeve (9).

8. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 2, characterized in that: A round ball (3) is arranged on the outside of the compression jacket (9).

9. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 4, characterized in that: The compression inner core (4) is slidably arranged in the compression outer sleeve (9).

10. A stainless steel corrugated hose air tightness detection quick sealing device according to claim 3, characterized in that: The movable sleeve (10) is in a truncated cone shape, the movable sleeve (10) is in contact with the compression sleeve (9), and the inner expansion block (2) is a rubber block.

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