Twist installation type quick airtight plug

Abstract

The utility model discloses a twist installation type quick airtight plug which comprises a twist installation block and a butt joint pipe, a center hole is coaxially formed in the twist installation block in a penetrating mode, a plugging head is installed in the center hole and protrudes out of the top end of the twist installation block, a connecting block is fixedly arranged at the top end of the twist installation block, and the butt joint pipe is fixedly connected with the connecting block. The connecting block is located on the outer side of the center hole, a locking plate is arranged on one side of the top of the connecting block in the circumferential direction of the twisting block, a vehicle pipeline is connected to the peripheral side of the upper portion of the butt joint pipe, an air hole plugging groove is formed in the bottom end of the butt joint pipe, and the air hole plugging groove communicates with the vehicle pipeline. The air hole plugging groove is matched with the plugging head, locking pieces are arranged on the peripheral side of the lower portion of the butt joint pipe and the vehicle pipeline in a staggered mode, and during butt joint, the locking pieces are rotationally inserted into the position between the locking plate and the twisting block for locking, so that rapid plugging of the vehicle pipeline is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline plugging, in particular to a twist-on quick airtight plug. Background Art

[0002] When the vehicle pipeline is processed for air tightness test, the vehicle pipeline needs to be sealed. When sealing the vehicle pipeline in the prior art, a threaded connection is mostly used to connect the plug to the vehicle pipeline to achieve the sealing of the vehicle pipeline. There are many operation steps and the sealing efficiency is low. It is not suitable for a large number of vehicle pipeline air tightness tests.

[0003] Therefore, it is necessary to provide a twist-on quick airtight plug to solve the problems mentioned in the above background technology. Utility Model Content

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a twist-on quick airtight plug, comprising a twist-on block and a butt tube, the twist-on block being coaxially penetrated by a center hole, a sealing head being installed inside the center hole, the sealing head protruding from the top of the twist-on block, a connecting block being fixedly provided at the top of the twist-on block, the connecting block being located outside the center hole, a locking plate being arranged on one side of the top of the connecting block along the circumference of the twist-on block, a vehicle pipeline being connected to the upper outer peripheral side of the butt tube, an air pore sealing groove being arranged in communication with the vehicle pipeline, the air pore sealing groove being adapted to the sealing head, a locking piece being arranged on the lower peripheral side of the butt tube and staggered with the vehicle pipeline, when docking, the locking piece is rotated and inserted into the position between the locking plate and the twist-on block for locking, so as to realize rapid sealing of the vehicle pipeline.

[0005] Preferably, a locking groove is provided at the top of the twisting block below the locking plate, a locking strip is longitudinally slidably provided in the locking groove, and the lower end of the locking strip is elastically connected to the bottom of the locking groove via a spring.

[0006] Preferably, the top of the locking strip is a raised smooth transition structure;

[0007] An adjusting hole is provided on the side of the twisting block, and the adjusting hole is communicated with the locking groove.

[0008] Preferably, a locking groove is provided at a side of the bottom end of the locking piece away from the air hole blocking groove, and the locking groove is adapted to the position of the locking strip.

[0009] Preferably, the locking plate is an arc-shaped plate structure.

[0010] Preferably, the shape of the locking plate on the side facing the center of the twisting block is adapted to the outer peripheral shape of the butt joint pipe.

[0011] Preferably, the distance from the bottom end of the locking plate to the top end of the twisting block is greater than the thickness of the locking piece by 0.1-0.2 mm.

[0012] Preferably, an annular groove is provided on the outer peripheral side of the top of the plugging head, and a sealing ring is sleeved on the annular groove.

[0013] Preferably, a quick connector is installed on the central hole extending out of the bottom end of the plugging head, which is used to connect with a detection device to detect the air tightness of the vehicle pipeline.

[0014] Compared with the prior art, the utility model provides a twist-on quick airtight plug, which has the following beneficial effects:

[0015] In the utility model, the plugging head enters the air hole plugging groove to seal it by docking the twisting block with the docking tube, and then the twisting block is rotated to the upper side of the locking piece, and the locking piece is locked on the twisting block by the locking plate, thereby realizing rapid sealing of the air hole plugging groove by the plugging head, with fewer operating steps and high sealing efficiency, and is suitable for a large number of vehicle pipeline air tightness tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a twist-on quick airtight plug;

[0017] Figure 2 It is a rear view structural diagram of a twist-on quick airtight plug twist-on block;

[0018] Figure 3 It is a schematic diagram of the structure of a twist-on quick airtight plug butt-jointed pipe from a top view;

[0019] Figure 4 It is a structural schematic diagram of a twist-on quick airtight plug in an unlocked state after the twist-on block is docked with the butt pipe;

[0020] Figure 5 It is a structural schematic diagram of a twist-on quick airtight plug in a locked state after the twist-on block is docked with the butt pipe;

[0021] In the figure: 1. twisting block; 2. sealing head; 3. connecting block; 4. locking plate; 5. locking groove; 6. locking strip; 7. spring; 8. butt joint tube; 9. vehicle pipeline; 10. locking piece; 11. air hole sealing groove; 12. locking groove. DETAILED DESCRIPTION

[0022] See also Figure 1-5The utility model provides a twist-on quick airtight plug, including a twist-on block 1 and a butt pipe 8, the twist-on block 1 is coaxially penetrated with a center hole, and a plugging head 2 is installed inside the center hole, and the plugging head 2 protrudes from the top of the twist-on block 1, and a connecting block 3 is fixed on the top of the twist-on block 1, and the connecting block 3 is located outside the center hole, and a locking plate 4 is arranged on one side of the top of the connecting block 3 along the circumference of the twist-on block 1, and a vehicle pipeline 9 is connected to the upper outer peripheral side of the butt pipe 8, and an air hole plugging groove 11 is opened at the bottom end of the butt pipe 8, and the air hole plugging groove 11 is connected to the vehicle pipeline 9, and the air hole plugging groove 11 is adapted to the plugging head 2, and a locking piece 10 is staggered on the lower peripheral side of the butt pipe 8 and the vehicle pipeline 9. When docking, the locking piece 10 is rotated and inserted into the position between the locking plate 4 and the twist-on block 1 for locking, so as to realize the rapid plugging of the vehicle pipeline 9.

[0023] It needs to be explained that the vehicle pipeline 9 is welded and connected to the butt pipe 8. When in use, the twisting block 1 and the butt pipe 8 are first docked so that the sealing head 2 enters the air hole sealing groove 11 for sealing, and then the twisting block 1 is rotated to the upper side of the locking plate 10, and the locking plate 10 is locked on the twisting block 1 through the locking plate 4 to complete the sealing of the vehicle pipeline 9.

[0024] In this embodiment, a locking groove 5 is provided at the top of the twisting block 1 below the locking plate 4, a locking strip 6 is longitudinally slidably arranged in the locking groove 5, and the lower end of the locking strip 6 is elastically connected to the bottom of the locking groove 5 via a spring 7.

[0025] The top of the locking strip 6 is a raised smooth transition structure;

[0026] An adjustment hole is provided on the side of the twisting block 1, and the adjustment hole is communicated with the locking groove 5. The adjustment hole and the locking groove 5 are located on the same radius.

[0027] A locking groove 12 is formed at the bottom end of the locking piece 10 away from the air hole blocking groove 11 , and the locking groove 12 is adapted to the position of the locking strip 6 .

[0028] Specifically, the smooth transition structure is a semicircular or arc-shaped structure, which may be a strip or rod-shaped structure with an arc-shaped or semicircular top, or an elastic structure (such as a metal strip) with the top bent into an arc shape.

[0029] It should be explained that, when the locking piece 10 is locked on the upper side of the twisting block 1 by the locking plate 4, the locking groove 5 and the locking groove 12 are overlapped, and the locking strip 6 can enter the locking groove 12 under the push of the spring 7 to further fix the twisting block 1 and the docking tube 8. In addition, since the locking strip 6 is provided with a guide structure, the locking strip 6 can be pushed by rotating the twisting block 1 to achieve the lifting and lowering of the locking strip 6, and then the locking strip 6 can be quickly separated from the locking groove 12 when the twisting block 1 is disassembled.

[0030] In this embodiment, the locking plate 4 is an arc-shaped plate structure.

[0031] The shape of the locking plate 4 facing the center of the twisting block 1 is adapted to the outer peripheral shape of the butt joint pipe 8 .

[0032] In this embodiment, the distance from the bottom end of the locking plate 4 to the top end of the twisting block 1 is greater than the thickness of the locking piece 10 by 0.1-0.2 mm.

[0033] In this embodiment, an annular groove is provided on the outer peripheral side of the top of the plugging head 2, and a sealing ring is sleeved on the annular groove to increase the sealing effect of the plugging head 2.

[0034] In this embodiment, a quick connector is installed on the bottom end of the plugging head 2 extending out of the central hole, which is used to connect with the detection equipment to detect the air tightness of the vehicle pipeline 9.

[0035] It should be explained that the quick connector and the plugging head 2 form a one-way valve structure. When the test gas / liquid is input from the lower end of the quick connector to the vehicle pipeline 9, the one-way valve is a passage. When the test gas / liquid is input from the vehicle pipeline 9 to the quick connector, the one-way valve is a closed circuit. Specifically, the device is used to plug the two ends of the vehicle pipeline 9, and then the test gas / liquid is introduced into the vehicle pipeline 9 from one side of the quick connector. Finally, the air tightness is tested by the detection device.

[0036] During the specific implementation, the handheld twist block is docked with the docking tube so that the sealing head enters the air hole sealing groove for sealing, and then the twist block is rotated to the upper side of the locking piece, and the locking piece is locked on the twist block through the locking plate. Only one docking and two twists are needed to complete the sealing operation of the vehicle pipeline. The operation steps are few and the sealing efficiency is high. It is suitable for a large number of vehicle pipeline air tightness tests.

[0037] What is described above 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 twist-on quick-release airtight plug, characterized in that: The invention comprises a twisting block (1) and a butt-joint pipe (8), wherein the twisting block (1) is coaxially penetrated with a center hole, a plugging head (2) is installed inside the center hole, the plugging head (2) protrudes from the top of the twisting block (1), a connecting block (3) is fixedly arranged at the top of the twisting block (1), the connecting block (3) is located outside the center hole, a locking plate (4) is arranged on one side of the top of the connecting block (3) along the circumference of the twisting block (1), and a vehicle pipeline (9) is connected to the upper outer peripheral side of the butt-joint pipe (8) The bottom end of the butt joint tube (8) is provided with an air hole plugging groove (11), the air hole plugging groove (11) is connected to the vehicle pipeline (9), the air hole plugging groove (11) is adapted to the plugging head (2), and a locking piece (10) is provided on the lower peripheral side of the butt joint tube (8) so as to be staggered with the vehicle pipeline (9). When the butt joint is performed, the locking piece (10) is rotated and inserted into the position between the locking plate (4) and the twisting block (1) to lock, thereby realizing rapid plugging of the vehicle pipeline (9).

2. A twist-on quick-fit airtight plug according to claim 1, characterized in that: A locking groove (5) is provided at the top of the twisting block (1) below the locking plate (4), a locking strip (6) is longitudinally slidably arranged in the locking groove (5), and the lower end of the locking strip (6) is elastically connected to the bottom of the locking groove (5) via a spring (7).

3. A twist-on quick-fit airtight plug according to claim 2, characterized in that: The top of the locking strip (6) is a raised smooth transition structure; An adjustment hole is provided on the side of the twisting block (1), and the adjustment hole is communicated with the locking groove (5).

4. A twist-on quick-fit airtight plug according to claim 2, characterized in that: A locking groove (12) is provided at the bottom end of the locking piece (10) on a side away from the air hole blocking groove (11), and the locking groove (12) is adapted to the position of the locking strip (6).

5. The twist-on quick-fit airtight plug according to claim 1, characterized in that: The locking plate (4) is an arc-shaped plate structure.

6. The twist-on quick-fit airtight plug according to claim 1, characterized in that: The shape of the locking plate (4) facing the center of the twisting block (1) is adapted to the outer peripheral shape of the butt joint pipe (8).

7. The twist-on quick-fit airtight plug according to claim 1, characterized in that: The distance from the bottom end of the locking plate (4) to the top end of the twisting block (1) is greater than the thickness of the locking piece (10) by 0.1-0.2 mm.

8. The twist-on quick-fit airtight plug according to claim 1, characterized in that: An annular groove is provided on the outer peripheral side of the top of the plugging head (2), and a sealing ring is sleeved on the annular groove.

9. The twist-on quick-fit airtight plug according to claim 1, characterized in that: The bottom end of the plugging head (2) extends out of the central hole and is equipped with a quick connector for connecting to a testing device to test the air tightness of the vehicle pipeline (9).

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