Sealing joint device for detecting air tightness of rubber tube

Abstract

The invention provides a sealing joint device for detecting the air tightness of a rubber tube. The sealing joint device comprises a lock cap, a sealing ring, a core head and a jacking device, the core head is composed of a first core head section and a second core head section, and an annular boss is arranged between the first core head section and the second core head section. One section of the core head is inserted into the jacking device; the lock cap is composed of a first lock cap section, a second lock cap section and a third lock cap section. A sealing ring is arranged between one end face of the annular boss and the inner end face of the third lock cap section and makes contact with the inner diameter of the second lock cap section. The diameter of the second core head section is smaller than the inner diameter of the rubber pipe, and the outer diameter of the rubber pipe is smaller than the inner diameter of the sealing ring. The sealing ring is made of silica gel; the rubber tube to be detected can be clamped, the two ends of the rubber tube are sealed in a lossless mode, and it is guaranteed that the two ends of the detected rubber tube are not affected.

Description

Technical Field

[0001] The invention belongs to the technical field of detecting the air tightness of a hose, in particular to a sealing joint device for detecting the air tightness of a hose. Background Art

[0002] In industrial automation, the tightness of hoses is of vital importance and requires strict air tightness testing. In the prior art, when testing the air tightness of hoses, the two ends of the hose are often expanded and inserted into the testing device. The expansion and deformation of the two ends of the hose make the two ends of the hose fit tightly with the testing device to achieve sealing, which causes damage to the two ends of the hose. This damage is irreversible and affects the subsequent use and re-testing of the hose. Summary of the invention

[0003] In view of the above problems, the purpose of this application is to provide a sealing joint device for testing the air tightness of a hose, which can not only clamp the hose to be tested, but also achieve lossless sealing between the two ends of the hose and the testing device, ensuring that the two ends of the hose are not affected after testing.

[0004] To achieve part or all of the above purposes or other purposes, the present application provides the following technical solutions: a sealing joint device for detecting the air tightness of a hose, comprising a locking cap, a sealing ring, a core head and a jacking device; the core head is composed of a core head section and a core head section, and an annular boss is arranged between the core head section and the core head section; the core head section is inserted into the jacking device; the locking cap is composed of a locking cap section, a locking cap section and a locking cap section; the inner diameter of the locking cap section is larger than the inner diameter of the locking cap section, The inner diameter of the second section of the lock cap is larger than the inner diameter of the third section of the lock cap; the second section of the lock cap is sleeved on the annular boss and the second section of the core head, and the third section of the lock cap is sleeved on the second section of the core head; a sealing ring is arranged between one end face of the annular boss and the inner end face of the third section of the lock cap, and the sealing ring contacts the inner diameter of the second section of the lock cap; a rubber hose is sleeved on the second section of the core head, the diameter of the second section of the core head is smaller than the inner diameter of the rubber hose, and the outer diameter of the rubber hose is smaller than the inner diameter of the sealing ring; the sealing ring is made of silicone.

[0005] Furthermore, it also includes a base; a groove is provided on the base, and a guide strip is provided in the groove; the jacking device is a rectangular parallelepiped, the jacking device is arranged in the groove, and the jacking device is provided with a guide groove matching the groove; the base is connected to a first section of the lock cap, and the end face of the base is in contact with the other end face of the annular boss; a protruding annular connecting part is provided at the connection between the base and a first section of the lock cap, and the annular connecting part is connected to a first section of the lock cap by a thread.

[0006] Furthermore, the core head section is connected to the jacking device via threads.

[0007] Furthermore, it also includes a cylinder; the cylinder is arranged at one end of the jacking device away from the core head.

[0008] Furthermore, a device for detecting the air tightness of the hose comprises an air inlet part and an air blocking part; the air inlet part comprises a locking cap, a sealing ring, a No. 1 core head, a No. 1 jacking device and a cylinder; a core head air vent is arranged inside the No. 1 core head, and the core head air vent passes through the No. 1 core head section one and the No. 1 core head section two; an air inlet hole matching the core head air vent is arranged inside the No. 1 jacking device, and the air inlet hole is an L-shaped hole; the air blocking part comprises a locking cap, a sealing ring, a No. 2 core head, a No. 2 jacking device and a cylinder.

[0009] Furthermore, the method of using the sealing joint device for detecting the air tightness of the hose is as follows: put the hose on the core head, start the cylinder, and the cylinder drives the pushing device forward, and drives the core head forward; the positions of the base and the locking cap remain unchanged, and the core head pushes out the locking cap; the distance between the annular boss and the three sections of the locking cap becomes smaller, causing extrusion on both ends of the sealing ring; the sealing ring bends and deforms toward the direction of the hose, and the sealing ring generates an extrusion force on the hose, thereby achieving sealing between the hose and the core head; after detecting the air tightness of the hose, the cylinder drives the pushing device backward, and drives the core head backward, and the sealing ring returns to its original state due to its own elastic properties, and the sealing ring has no extrusion force on the hose, and the hose joint returns to its original state and can be easily pulled out from the core head.

[0010] Furthermore, the method of using the device for detecting the air tightness of the hose is as follows: put the joint at one end of the hose on the No. 1 core head, and put the joint at the other end of the hose on the No. 2 core head; start the cylinder, the cylinder drives the No. 1 jacking device and the No. 2 jacking device to move forward, and drives the No. 1 core head and the No. 2 core head to move forward; the position of the base and the lock cap remains unchanged, and the core head pushes out of the lock cap; the distance between the annular boss and the three sections of the lock cap becomes smaller, causing extrusion on both ends of the sealing ring; the sealing ring bends and deforms toward the direction of the hose, and the sealing ring exerts extrusion force on the hose, so as to realize the connection between the hose and the core head. Check the sealing between the heads; delay for 3 seconds, start to take in air and sink the hose below the water level to blow air; delay for 6 seconds, observe whether there are bubbles, and complete the air tightness test; lift the hose out of the water, stop blowing air, and the cylinder drives the No. 1 and No. 2 jacking devices to move backwards, and drives the No. 1 and No. 2 core heads to move backwards. The sealing ring returns to its original state due to its own elastic properties, and the sealing ring has no squeezing force on the hose. The hose joint returns to its original state and can be easily pulled out from the core head; repeat the above test for the next hose.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the inner diameter of the two ends of the hose is larger than the diameter of the core head of the detection device, and the clamping of the two ends of the hose by the detection device is not achieved by expanding and deforming the two ends of the hose; the inner diameter of the sealing ring is larger than the outer diameter of the two ends of the hose, and the two ends of the hose can be easily inserted into the core head of the detection device. The jacking device and the core head are driven forward by the action of the cylinder to achieve the extrusion of the two ends of the sealing ring. The sealing ring is made of a silicone material with a certain hardness, the ability to bend and deform toward the middle when extruded, and resilience; when the two ends of the sealing ring are squeezed, the outer peripheral surface of the sealing ring fits with the two sections of the lock cap, and can only bend and deform in the direction of the hose; thereby achieving non-damaging locking of the two ends of the hose and achieving sealing between the two ends of the hose and the detection device. After the detection, the sealing ring returns to its original state through its own elasticity and is separated from the two ends of the hose. The two ends of the hose return to their original state, and the hose is not damaged or has no traces, which does not affect the subsequent use and re-detection of the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the hose joint of the present invention when it is not locked; Figure 2 It is a schematic diagram of the structure of the present invention when locking the hose joint; Figure 3 It is a right side view of the present invention; Figure 4 It is a schematic diagram of the structure of the lock cap; Figure 5 It is a schematic diagram of the structure when the sealing ring is not deformed; Figure 6 A schematic diagram of the structure of a core head with a core head vent hole; Figure 7 A schematic diagram of the structure of a jacking device for setting an air inlet hole; Figure 8 is a schematic diagram of the structure of the base; Fig. 9 It is the right side view of the base; Fig.10 This is the overall schematic diagram after installation; In the figure: 1. Locking cap; 1-1. Locking cap section one; 1-2. Locking cap section two; 1-3. Locking cap section three; 2. Sealing ring; 3. Core head No. 1; 3-A. Core head No. 2; 3-1. Core head section one; 3-2. Core head section two; 3-3. Annular boss; 4. Jacking device No. 1; 4-A. Jacking device No. 2; 5. Base; 5-1. Circular ring connecting part; 5-2. Groove; 6. Cylinder joint; 7. Core head vent hole; 8. Air inlet hole; 9. Hose. DETAILED DESCRIPTION

[0013] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0014] See attached Figure 1-10 , a sealing core head 3 device for detecting the air tightness of a rubber hose comprises a locking cap 1, a sealing ring 2, a core head 3 and a jacking device; the core head is composed of a core head section 1 3-1 and a core head section 2 3-2, and an annular boss 3-3 is arranged between the core head section 1 3-1 and the core head section 2 3-2; the core head section 1 3-1 is inserted into the jacking device; the locking cap 1 is composed of a locking cap section 1-1, a locking cap section 2 1-2 and a locking cap section 3 1-3; the inner diameter of the locking cap section 1-1 is larger than the inner diameter of the locking cap section 2 1-2, and the inner diameter of the locking cap section 2 1-2 is larger than the inner diameter of the locking cap section 3 1-3; the locking cap section 2 1 -2 is sleeved on the annular boss 3-3 and the core head section 3-2, and the lock cap section 3-3 is sleeved on the core head section 3-2; a sealing ring 2 is arranged between one end face of the annular boss 3-3 and the inner end face of the lock cap section 3-3, and the sealing ring 2 is in contact with the inner diameter of the lock cap section 1-2; a rubber hose 9 is sleeved on the core head section 3-2, the diameter of the core head section 3-2 is smaller than the inner diameter of the rubber hose 9, and the outer diameter of the rubber hose 9 is smaller than the inner diameter of the sealing ring 2; the sealing ring 2 is made of silicone; the sealing ring 2 is made of silicone with a certain hardness, the ability to bend toward the middle when squeezed, and resilience.

[0015] It also includes a base 5; a groove 5-2 is provided on the base 5, and a guide strip is provided in the groove 5-2; the jacking device is a rectangular parallelepiped, the jacking device is arranged in the groove 5-2, and the jacking device is provided with a guide groove matching the groove; the base 5 is connected to the lock cap section 1-1, and the end face of the base 5 is in contact with the other end face of the annular boss 3-3; a protruding annular connecting portion 5-1 is provided at the connection between the base 5 and the lock cap section 1-1, and the annular connecting portion 5-1 is connected to the lock cap section 1-1 by threads; the jacking device can move back and forth in the groove 5-2 of the base 5.

[0016] The core head section 3 - 1 is connected to the jacking device via threads; the base 5 is fixedly connected to the lock cap 1 , and the jacking device drives the core head 3 to move inside the lock cap 1 .

[0017] It also includes a cylinder; the cylinder joint part 6 of the cylinder is arranged at one end of the jacking device away from the core head 3; the jacking device can also be moved forward by manual operation.

[0018] A device for detecting the air tightness of a hose comprises an air intake portion and an air blocking portion; the air intake portion comprises a locking cap 1, a sealing ring 2, a No. 1 core head 3, a No. 1 jacking device 4 and a cylinder; a core head air vent 7 is arranged inside the No. 1 core head 3, and the core head air vent 7 passes through the No. 1 core head section 1 3-1 and the No. 1 core head section 2 3-2; an air intake hole 8 matching the core head air vent 7 is arranged inside the No. 1 jacking device 4, and the air intake hole 8 is an L-shaped hole; the air blocking portion comprises a locking cap 1, a sealing ring 2, a No. 2 core head 3-A, a No. 2 jacking device 4-A and a cylinder; the air intake portion is responsible for air intake, and the air blocking portion is responsible for air blocking, and the two cooperate to realize the detection of the air tightness of the hose 9.

[0019] The method of using the sealing core head 3 device for detecting the air tightness of the hose is as follows: put the hose 9 on the core head 3, start the cylinder, and the cylinder joint 6 drives the jacking device to move forward, and drives the core head 3 to move forward; the positions of the base 5 and the locking cap 1 remain unchanged, and the core head 3 pushes out the locking cap 1; the distance between the annular boss 3-3 and the three sections 1-3 of the locking cap becomes smaller, causing squeezing of the two ends of the sealing ring 2; the sealing ring 2 bends and deforms toward the direction of the hose 9, and the sealing ring 2 generates an squeezing force on the hose 9 to achieve the sealing between the hose 9 and the core head 3; after detecting the air tightness of the hose 9, the elastic properties of the sealing ring 2 itself push the core head 3 and the jacking device to move backward, and the sealing ring 2 returns to its original state, and the sealing ring 2 has no squeezing force on the hose 9, and the hose 9 core head 3 returns to its original state and can be easily pulled out from the core head 3.

[0020] The method of using the device for detecting the air tightness of the hose is as follows: put the joint at one end of the hose 9 on the No. 1 core head 3, and put the joint at the other end of the hose 9 on the No. 2 core head 3-A; start the cylinder, and the cylinder joint part 6 drives the No. 1 jacking device and the No. 2 jacking device to move forward, and drives the No. 1 core head 3 and the No. 2 core head 3-A to move forward; the position of the base and the locking cap remains unchanged, and the core head pushes out the locking cap; the distance between the annular boss and the three sections of the locking cap becomes smaller, causing extrusion on both ends of the sealing ring; the sealing ring bends and deforms toward the direction of the hose 9, and the sealing ring generates an extrusion force on the hose 9, so that the hose 9 is tightened. The sealing between the hose 9 and the core head; delay for 3 seconds, start to take in air and sink the hose 9 below the water level to blow air; delay for 6 seconds, observe whether there are bubbles, and complete the air tightness test; lift the hose 9 out of the water, stop blowing, and the cylinder joint 6 drives the No. 1 jacking device and the No. 2 jacking device to move backward, and drives the No. 1 core head and the No. 2 core head to move backward. The sealing ring returns to its original state due to its own elastic properties, and the sealing ring has no squeezing pressure on the hose 9. The hose 9 joint returns to its original state and can be easily pulled out from the core head; repeat the above method for the next hose 9.

[0021] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A sealing joint device for detecting the air tightness of a hose, characterized by: It includes a locking cap, a sealing ring, a core head and a jacking device; the core head consists of a core head section and a core head section, an annular boss is arranged between the core head section and the core head section; the core head section is inserted into the jacking device; the locking cap consists of a lock cap section, a lock cap section and a lock cap section; the inner diameter of the lock cap section is larger than the inner diameter of the lock cap section two, and the inner diameter of the lock cap section two is larger than the inner diameter of the lock cap section three; the lock cap section two is sleeved on the annular boss and the core head section two, and the lock cap section three is sleeved on the core head section two; a sealing ring is arranged between one end face of the annular boss and the inner end face of the lock cap section three, and the sealing ring contacts the inner diameter of the lock cap section two; a rubber hose is sleeved on the core head section two, the diameter of the core head section two is smaller than the inner diameter of the rubber hose, and the outer diameter of the rubber hose is smaller than the inner diameter of the sealing ring; the sealing ring is made of silicone.

2. The sealing joint device for detecting the air tightness of a hose according to claim 1, characterized in that: It also includes a base; a groove is provided on the base, and a guide strip is provided in the groove; the jacking device is a rectangular parallelepiped, the jacking device is arranged in the groove, and the jacking device is provided with a guide groove matching the groove; the base is connected to one end of the lock cap, and the end face of the base is in contact with the other end face of the annular boss.

3. The sealing joint device for detecting the air tightness of a hose according to claim 1, characterized in that: The core head section is connected to the jacking device through threads.

4. The sealing joint device for detecting the air tightness of a hose according to claim 1, characterized in that: It also includes a cylinder; the cylinder is arranged at one end of the jacking device away from the core head.

5. The device for detecting the air tightness of a hose according to claim 4, characterized in that: It comprises an air intake part and an air blocking part; the air intake part comprises a locking cap, a sealing ring, a No. 1 core head, a No. 1 jacking device and a cylinder; a core head air vent is arranged inside the No. 1 core head, and the core head air vent runs through the No. 1 core head section and the No. 1 core head section; an air intake hole matching the core head air vent is arranged inside the No. 1 jacking device, and the air intake hole is an L-shaped hole; the air blocking part comprises a locking cap, a sealing ring, a No. 2 core head, a No. 2 jacking device and a cylinder.

6. A method for using the sealing joint device for detecting the air tightness of a hose according to claim 4, characterized in that: The method of use is as follows: put the hose on the core head and start the cylinder. The cylinder drives the jacking device forward and the core head forward; the positions of the base and the locking nut remain unchanged, and the core head pushes out the locking nut; the distance between the annular boss and the three sections of the locking nut becomes smaller, causing extrusion on both ends of the sealing ring; the sealing ring bends and deforms toward the direction of the hose, and the sealing ring exerts an extrusion force on the hose, thereby achieving sealing between the hose and the core head; after testing the air tightness of the hose, the cylinder drives the jacking device backward and the core head backward, and the sealing ring returns to its original state due to its own elastic properties, and the sealing ring has no extrusion force on the hose, and the hose joint returns to its original state and can be easily pulled out from the core head.

7. The method for using the device for detecting air tightness of a hose according to claim 5, characterized in that: The method of use is as follows: put the joint at one end of the hose on the No. 1 core head, and put the joint at the other end of the hose on the No. 2 core head; start the cylinder, the cylinder drives the No. 1 jacking device and the No. 2 jacking device to move forward, and drives the No. 1 core head and the No. 2 core head to move forward; the position of the base and the lock cap remains unchanged, and the core head pushes out of the lock cap; the distance between the annular boss and the three sections of the lock cap becomes smaller, causing squeezing of the two ends of the sealing ring; the sealing ring bends and deforms toward the direction of the hose, and the sealing ring generates squeezing force on the hose to achieve sealing between the hose and the core head. ; Delay for 3 seconds, start to take in air and sink the hose below the water level to blow; delay for 6 seconds, observe whether there are bubbles, and complete the air tightness test; lift the hose out of the water, stop blowing, the cylinder drives the No. 1 and No. 2 jacking devices to move backward, and drives the No. 1 and No. 2 core heads to move backward. The sealing ring returns to its original state due to its own elastic properties, and the sealing ring has no squeezing force on the hose. The hose joint returns to its original state and can be easily pulled out from the core head; repeat the above test for the next hose.

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