Inflator for pressure vessels

Abstract

The present invention relates to an inflation device for a pressure vessel. An inflation device for a pressure vessel comprises a fixed block and a movable tube, wherein the fixed block is formed with a through groove penetrating from front to back for the movable tube to pass through, the rear end of the movable tube is connected to a quick connector, the movable tube is formed with a ventilation cavity arranged along the front-to-back direction, the circumferential outer wall of the front end of the movable tube and the circumferential inner wall of the through groove of the fixed block are formed with a mutually matching threaded structure, the sliding sleeve on the fixed block is provided with a connecting sleeve, the connecting sleeve is formed with a front connecting groove opening forward, and an internal threaded structure is formed on the circumferential inner wall of the front connecting groove of the connecting sleeve. The present invention has the advantage of being able to be used for inflation of a variety of pressure vessels.

Description

Technical Field

[0001] The invention relates to an inflator for a pressure vessel. Background Art

[0002] The pressure vessel is usually provided with an air inlet pipe, which is connected to the air inlet pipe through the air charging joint of the air charging pipe for inflation.

[0003] The air inlet end of the air inlet pipe is provided with a slot for inserting the air outlet pipe of the inflation pipe, and the slot depths of the air inlet pipes of different pressure vessels are different.

[0004] An external thread structure is provided on the outside of the air inlet end of the air inlet pipe, and a connecting sleeve is provided on the inflation joint. The connecting sleeve is formed with an internal thread structure that matches the external thread structure. The inflation pipe and the pressure vessel are fixed by the connecting sleeve and the thread of the air inlet pipe. However, the outer diameter of the air inlet end of the air inlet pipe of each pressure vessel is different. Summary of the invention

[0005] The object of the present invention is to provide a pressure vessel inflation device which can be used for inflating different types of pressure vessels.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an inflation device for a pressure vessel, comprising a fixed block and a movable tube, the fixed block is formed with a through groove penetrating front and back for the movable tube to pass through, the rear end of the movable tube is connected to a quick connector, the movable tube is formed with a ventilation cavity arranged along the front and back directions, the circumferential outer wall of the front end of the movable tube and the circumferential inner wall of the through groove of the fixed block are formed with a mutually matching threaded structure, a connecting sleeve is provided on the sliding sleeve of the fixed block, the connecting sleeve is formed with a front connecting groove opening forward, and an internal threaded structure is formed on the circumferential inner wall of the front connecting groove of the connecting sleeve.

[0007] When the device of the present invention is used, the movable tube is rotated according to the depth of the air inlet pipe slot of the pressure vessel, and then the connecting sleeve is threadedly fixed, and then the movable tube is rotated again to make the front end of the movable tube contact and seal with the axial groove wall of the slot, and then the inflation tube connected to the air source is connected to the quick connector of the device to achieve the connection of the inflation tube, the device of the present invention and the pressure vessel, so as to facilitate subsequent inflation. The extension length of the movable tube of the device of the present invention is adjustable to be suitable for inflation of various pressure vessels.

[0008] Preferably, a limiting groove connected to the front connecting groove is formed at the rear end of the connecting sleeve, the inner diameter of the limiting groove is smaller than the inner diameter of the front connecting groove, a front limiting protrusion extending circumferentially outward is formed at the front end of the fixing block, the front limiting protrusion is always located in the front connecting groove, a rear limiting protrusion extending circumferentially outward is provided at the front end of the fixing block, and the connecting sleeve is always located in front of the rear limiting protrusion. The front limiting protrusion and the rear limiting protrusion are both used for front and rear limiting of the connecting sleeve.

[0009] Preferably, the fixing block is composed of a front fixing block and a rear fixing block, the front fixing block is provided with the front limiting protrusion, the rear fixing block is provided with the rear limiting protrusion, the front fixing block is located at the front side of the rear fixing block, and the front fixing block and the rear fixing block are both formed with the through groove. The fixing block is composed of a front fixing block and a rear fixing block, and the connecting sleeve can be replaced by disassembling the fixing block, so that the device of the present invention is suitable for the inflation of various pressure vessels. The front fixing block and the rear fixing block can be fixed by threads, or any other existing fixing method can be adopted.

[0010] Preferably, the fixing block is provided with a threaded structure matching with the outer circumferential wall of the movable tube through the circumferential inner wall of the front end of the groove, and a sealing structure is provided between the fixing block and the movable tube at the front end deviated from the front end. The sealing structure is provided to prevent gas from leaking from the movable tube and the fixing block during inflation.

[0011] Preferably, a fixing sleeve is provided in the rear end of the through groove of the fixing block, and the fixing block extends inwardly in the circumferential inner wall of the through groove to form an inner limiting convex ring. A first sealing ring is provided between the front end of the fixing sleeve and the rear end surface of the inner limiting convex ring, and a threaded structure that cooperates with each other is provided on the circumferential outer wall of the fixing sleeve and the circumferential inner wall of the rear end of the through groove of the fixing block. An annular groove is formed on the circumferential inner wall of the fixing sleeve, and a second sealing ring is provided in the annular groove. The inner wall of the fixing sleeve can be processed, and the fixing sleeve can be slidably matched with the movable tube to facilitate the forward and backward movement of the movable tube. The first sealing ring and the second sealing ring are used to achieve a leak-proof seal during inflation.

[0012] Preferably, the rear end of the fixed sleeve extends outward in the circumferential direction to form a pressure block, and the fixed sleeve is fixed to the fixed block so that the front end face of the pressure block abuts against the rear end face of the fixed block. The pressure block is provided to prevent the fixed sleeve from moving forward excessively or the first sealing ring from not being pressed into place, so as to ensure the sealing effect.

[0013] Preferably, a rotating block is fixed to the rear end of the movable tube, and the rotating block is formed with a rear connecting groove that opens rearward to be connected to the quick connector, and the circumferential inner wall of the rear connecting groove and the circumferential outer wall of the front end of the quick connector form a threaded structure that cooperates with each other, and a third sealing ring is provided in the rear connecting groove, and the quick connector is fixed to the rotating block so that the third sealing ring is confined between the axial groove wall of the rear connecting groove and the front end face of the quick connector.

[0014] Preferably, the cross section of the rotating block is a regular polygon. The rotating block can cooperate with a wrench to facilitate the rotation of the movable tube, thereby facilitating the forward and backward movement of the movable tube.

[0015] The present invention has the advantage of being applicable to the inflation of various pressure vessels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0018] Depend on Figure 1 As shown, an inflation device for a pressure vessel of the present invention comprises a fixed block 1 and a movable tube 2, the fixed block 1 is formed with a through groove penetrating front and back for the movable tube 2 to pass through, the rear end of the movable tube 2 is connected to a quick connector 3, the movable tube 2 is formed with a ventilation cavity 21 arranged along the front and back directions, the circumferential outer wall of the front end of the movable tube 2 and the circumferential inner wall of the through groove of the fixed block 1 are formed with a mutually matching threaded structure, a connecting sleeve 4 is provided on the sliding sleeve of the fixed block 1, the connecting sleeve 4 is formed with a front connecting groove 41 opening forward, and an internal threaded structure 42 is formed on the circumferential inner wall of the front connecting groove 41 of the connecting sleeve 4.

[0019] A limiting groove connected to the front connecting groove 41 is formed at the rear end of the connecting sleeve 4, and the inner diameter of the limiting groove is smaller than the inner diameter of the front connecting groove 41. A front limiting protrusion 101 extending circumferentially outward is formed at the front end of the fixing block 1. The front limiting protrusion 101 is always located in the front connecting groove 41. A rear limiting protrusion 102 extending circumferentially outward is provided at the rear end of the fixing block 1. The connecting sleeve 4 is always located in front of the rear limiting protrusion 102. The outer edges of the cross-sections of the front limiting protrusion 101 and the rear limiting protrusion 102 are both circular.

[0020] The fixing block 1 is composed of a front fixing block 11 and a rear fixing block 12. The front fixing block 11 is provided with a front limiting protrusion 101, and the rear fixing block 12 is provided with a rear limiting protrusion 102. The front fixing block 11 is located in front of the rear fixing block 12. Both the front fixing block 11 and the rear fixing block 12 are formed with the through groove, and the front fixing block 11 and the rear fixing block 12 are threadedly fixed.

[0021] The front fixing block 11 is provided with a thread structure matching with the circumferential outer wall of the movable tube 2 on the circumferential inner wall of the front through groove, and a sealing structure is provided between the fixing block 1 and the movable tube 2. A fixing sleeve 6 is provided in the rear end of the through groove of the rear fixing block 12, and the front fixing block 11 extends circumferentially inwardly through the circumferential inner wall of the through groove to form an inner limit convex ring 103, and a first sealing ring 13 is provided between the front end of the fixing sleeve 6 and the rear end face of the inner limit convex ring 103, and the circumferential outer wall of the fixing sleeve 6 and the circumferential inner wall of the rear end through groove of the rear fixing block 12 are provided with mutually matching thread structures, and an annular groove is formed on the circumferential inner wall of the fixing sleeve 6, and a second sealing ring 61 is provided in the annular groove. Among them, the rear end of the fixing sleeve 6 extends circumferentially outward to form a pressing block 62, and the fixing sleeve 6 is fixed to the rear fixing block 12 so that the front end face of the pressing block 62 abuts against the rear end face of the rear fixing block 12.

[0022] The rear end of the movable tube 2 is welded and fixed with a rotating block 7 having a circular cross section, the rotating block 7 is formed with a rear connection groove that opens backwards to connect with the quick connector 3, the circumferential inner wall of the rear connection groove and the circumferential outer wall of the front end of the quick connector 3 form a threaded structure that cooperates with each other, a third sealing ring 71 is arranged in the rear connection groove, and the quick connector 3 is fixed to the rotating block 7 so that the third sealing ring 71 is restricted between the axial groove wall of the rear connection groove and the front end face of the quick connector 3. The cross section of the rotating block 7 is a regular hexagon.

[0023] The extending length of the movable tube of the present invention is adjustable, and the connecting sleeve is replaceable, so that the movable tube can be used for inflating various pressure vessels.

Claims

1. An inflator for a pressure vessel, characterized in that The invention comprises a fixed block and a movable tube, wherein the fixed block is formed with a through groove which penetrates front and back for the movable tube to pass through, the rear end of the movable tube is connected with a quick connector, the movable tube is formed with a ventilation cavity arranged in the front and back direction, the circumferential outer wall of the front end of the movable tube and the circumferential inner wall of the through groove of the fixed block are formed with a mutually matching threaded structure, the sliding sleeve on the fixed block is provided with a connecting sleeve, the connecting sleeve is formed with a front connecting groove which opens forward, and an internal threaded structure is formed on the circumferential inner wall of the front connecting groove of the connecting sleeve; the circumferential inner wall of the front end of the through groove of the fixed block is provided with a thread which matches the circumferential outer wall of the movable tube Structure, a sealing structure is provided between the fixed block deviating from the front end and the movable tube; a fixed sleeve is provided in the rear end of the through groove of the fixed block, and the fixed block extends circumferentially inward through the circumferential inner wall of the groove to form an inner limit convex ring, a first sealing ring is provided between the front end of the fixed sleeve and the rear end surface of the inner limit convex ring, the circumferential outer wall of the fixed sleeve and the circumferential inner wall of the rear end of the through groove of the fixed block are provided with mutually matching threaded structures, an annular groove is formed on the circumferential inner wall of the fixed sleeve, and a second sealing ring is provided in the annular groove; the fixed block consists of a front fixed block and a rear fixed block, and the front fixed block is threadedly fixed to the rear fixed block.

2. A pressure vessel inflation device according to claim 1, characterized in that A limiting groove connected to the front connecting groove is formed at the rear end of the connecting sleeve, and the inner diameter of the limiting groove is smaller than the inner diameter of the front connecting groove. A front limiting protrusion extending circumferentially outward is formed at the front end of the fixing block, and the front limiting protrusion is always located in the front connecting groove. A rear limiting protrusion extending circumferentially outward is provided at the front end of the fixing block, and the connecting sleeve is always located in front of the rear limiting protrusion.

3. A pressure vessel inflation device according to claim 2, characterized in that The front fixing block is provided with the front limiting protrusion, the rear fixing block is provided with the rear limiting protrusion, the front fixing block is located at the front side of the rear fixing block, and the front fixing block and the rear fixing block are both formed with the passing groove.

4. The inflator for a pressure vessel according to claim 1, characterized in that The rear end of the fixing sleeve extends outward in the circumferential direction to form a pressing block, and the fixing sleeve is fixed to the fixing block so that the front end surface of the pressing block abuts against the rear end surface of the fixing block.

5. The inflation device for a pressure vessel according to claim 1, characterized in that A rotating block is fixed to the rear end of the movable tube, and the rotating block is formed with a rear connecting groove that opens rearward to be connected to the quick connector, and a circumferential inner wall of the rear connecting groove and a circumferential outer wall of the front end of the quick connector form a threaded structure that cooperates with each other, and a third sealing ring is provided in the rear connecting groove, and the quick connector is fixed to the rotating block so that the third sealing ring is confined between the axial groove wall of the rear connecting groove and the front end face of the quick connector.

6. The inflator for a pressure vessel according to claim 5, characterized in that The cross section of the rotating block is a regular polygon.

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