Sealing filling connector for filling disposable gas cylinder

Abstract

The utility model discloses a sealing filling connector for filling a disposable gas cylinder, and particularly relates to the technical field of filling connectors, the sealing filling connector comprises a connector main body arranged at the top of a cylinder body, the bottom end of the connector main body penetrates through the top of the cylinder body and is communicated with the interior of the cylinder body, and an annular groove is formed in the connector main body. A plurality of air inlets communicated with the annular groove are formed in the outer wall of the connector body, a sealing plate used for sealing the air inlets is arranged in the annular groove, a hollow pipe is fixedly arranged at the top of the sealing plate, and a plurality of elastic supporting assemblies are fixedly arranged at the bottom of the sealing plate. The hollow pipe is pushed downwards through the filling head to drive the sealing plate to automatically move away from the air inlets, then the bottle body can be inflated, after filling is completed, only the filling head needs to be pulled out slowly, the multiple compression springs push the piston rod to drive the sealing plate to automatically move upwards, the multiple air inlets are sealed to prevent air leakage, the threaded cover can be screwed down, and the filling head can be pulled out slowly. Therefore, the sealing performance of the joint main body can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filling joints, in particular to a sealing filling joint for filling disposable gas cylinders. Background Art

[0002] A gas cylinder is a movable pressure vessel with a bottle-shaped main structure used to store compressed gas, liquefied gas, dissolved adsorbed gas, etc. Gas cylinders are widely used in production and life fields, but due to the characteristics of the medium they contain, the use environment is complex and they are prone to explosion or leakage, causing serious consequences. Before using existing disposable gas cylinders, the filling head on the filling equipment is usually inserted into the filling connector on the disposable gas cylinder, and then the disposable gas cylinder is filled with gas.

[0003] For example, the prior art publication number is CN211780202U, which is a disposable sealed filling joint for filling gas cylinders. This utility model can quickly and conveniently connect and disassemble the filling equipment and the gas cylinder when the gas cylinder is filled, reducing the time for connecting and disassembling the filling equipment and the gas cylinder, improving the efficiency of filling the gas cylinder, and has strong practicality.

[0004] However, the above-mentioned prior art still has the following problems when in use: using multiple clip-on structures for sealing not only makes the operation steps cumbersome, but the clip-on structures are prone to loosening, resulting in air leakage during the inflation process, which poses a certain risk. Based on this, the utility model provides a sealed filling joint for disposable gas cylinder filling that is easy to fill and has good sealing performance. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a sealed filling joint for filling disposable gas cylinders. After the filling head pushes the hollow tube downward to drive the sealing plate to automatically move away from the air inlet, the bottle body can be filled with air. After the filling is completed, it is only necessary to slowly pull out the filling head. Multiple compression springs push the piston rod to drive the sealing plate to automatically move upward, thereby sealing the multiple air inlets to prevent air leakage, and the threaded cap can also be tightened, so as to further improve the sealing performance of the joint body to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealed filling joint for filling a disposable gas cylinder, comprising a joint body arranged on the top of the bottle body, the bottom end of the joint body passes through the top of the bottle body and is connected with the inside of the bottle body, an annular groove is provided inside the joint body, a plurality of air inlets connected with the annular groove are provided on the outer wall of the joint body, a sealing plate for sealing the plurality of air inlets is provided in the annular groove, a hollow tube is fixedly provided on the top of the sealing plate, a plurality of elastic support components are fixedly provided on the bottom of the sealing plate, each elastic support component comprises a sleeve, a piston rod passes through the inside of each sleeve, the top ends of the plurality of piston rods are in contact with the bottom of the sealing plate, a compression spring is fixedly provided on the bottom end of each piston rod, and the bottom end of the compression spring is fixed to the inner wall of the bottom of the sleeve.

[0007] In a preferred embodiment, a ring plate is provided at the bottom of the joint body, a plurality of threaded holes are opened at the top of the ring plate, threads are processed on the bottom surface of the outer wall of each sleeve, and the sleeve is threadedly connected to the threaded hole through threads, so that the staff can easily disassemble the sleeve.

[0008] In a preferred embodiment, a plurality of first bolts are threadedly connected to the bottom of the ring plate, and the ring plate is fixed to the bottom of the joint body by the plurality of first bolts, so that it is convenient for workers to disassemble the ring plate.

[0009] In a preferred embodiment, a first sealing ring is fixedly embedded in the inner wall of the top of the annular groove, a sealing groove matching the first sealing ring is opened on the top of the sealing plate, and the first sealing ring is inserted in the sealing groove to improve the sealing between the sealing plate and the annular groove.

[0010] In a preferred embodiment, limit blocks are fixedly provided on the inner walls on both sides of the annular groove, and the two limit blocks are staggered with multiple air inlets and multiple sleeves. Limit grooves matching the limit blocks are opened on both sides of the sealing plate, and the limit blocks are arranged in the limit grooves to improve the stability of the sealing plate when sliding.

[0011] In a preferred embodiment, a threaded cap is threadedly connected to the top of the joint body, a connecting rope is fixed between the threaded cap and the joint body, and the threaded cap and the joint body are connected together using the connecting rope, thereby preventing the threaded cap from being lost.

[0012] In a preferred embodiment, a second sealing ring is fixedly embedded in the outer wall of the joint body to improve the sealing between the joint body and the bottle body. A ring is fixedly sleeved on the outer wall of the joint body, and the ring is fixed to the top of the bottle body by a plurality of second bolts to facilitate removal of the joint body from the bottle body and recovery of the joint body.

[0013] In a preferred embodiment, the outer wall of the hollow tube is provided with a plurality of air holes which are evenly distributed on the outer wall of the hollow tube, and a filling head adapted to the hollow tube is provided above the hollow tube for filling the bottle with gas.

[0014] Technical effects and advantages of the utility model:

[0015] 1. The utility model pushes the hollow tube downward through the filling head to drive the sealing plate to automatically move away from the air inlet, and then the bottle can be inflated. After the filling is completed, it is only necessary to slowly pull out the filling head, and multiple compression springs push the piston rod to drive the sealing plate to automatically move upward, so that the multiple air inlets are sealed to prevent air leakage, and the threaded cap can also be tightened, so as to further improve the sealing performance of the joint body.

[0016] 2. The first sealing ring cooperates with the sealing groove to improve the sealing performance between the sealing plate and the annular groove. After the bottle body is used up, the staff can remove the joint body from the bottle body for recycling and reuse, and can also remove the ring plate, adjust the number of sleeves, and recycle the sleeves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a top view of the connector body of the utility model;

[0019] Figure 3 It is a cross-sectional view of the joint body and the ring plate of the utility model;

[0020] Figure 4 This is a bottom view of the connector body of the utility model;

[0021] Figure 5 It is a top view of the ring plate of the present utility model.

[0022] The accompanying drawings are marked as follows: 1, bottle body; 2, joint body; 3, annular groove; 4, air inlet; 5, sealing plate; 6, hollow tube; 7, elastic support assembly; 8, ring plate; 9, threaded hole; 10, first bolt; 11, first sealing ring; 12, sealing groove; 13, limit block; 14, limit groove; 15, threaded cover; 16, connecting rope; 17, second sealing ring; 18, collar; 19, second bolt; 20, air vent; 21, filling head;

[0023] 701, sleeve; 702, piston rod; 703, compression spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Refer to the instruction manual Figure 1-Figure 5 The utility model provides a sealed filling joint for filling a disposable gas cylinder, comprising a joint body 2 arranged on the top of the bottle body 1, the bottom end of the joint body 2 passes through the top of the bottle body 1 and is connected to the inside of the bottle body 1, an annular groove 3 is provided inside the joint body 2, a plurality of gas inlets 4 connected to the annular groove 3 are provided on the outer wall of the joint body 2, a sealing plate 5 for sealing the plurality of gas inlets 4 is provided in the annular groove 3, a hollow tube 6 is fixedly provided on the top of the sealing plate 5, a plurality of air holes 20 are provided on the outer wall of the hollow tube 6, and the plurality of air holes 20 are evenly distributed on the outer wall of the hollow tube 6, a filling head 21 adapted to the hollow tube 6 is provided above the hollow tube 6, and is used to fill the bottle 1 with gas;

[0026] A plurality of elastic support components 7 are fixedly arranged at the bottom of the sealing plate 5, each of which includes a sleeve 701, and a piston rod 702 is passed through the interior of each sleeve 701, and the top ends of the plurality of piston rods 702 are in contact with the bottom of the sealing plate 5, and a compression spring 703 is fixedly arranged at the bottom end of each piston rod 702, and the bottom end of the compression spring 703 is fixed to the inner wall of the bottom of the sleeve 701;

[0027] A threaded cover 15 is threadedly connected to the top of the joint body 2, and a connecting rope 16 is fixed between the threaded cover 15 and the joint body 2. The threaded cover 15 and the joint body 2 are connected together using the connecting rope 16 to prevent the threaded cover 15 from being lost. A second sealing ring 17 is fixedly embedded in the outer wall of the joint body 2 to improve the sealing between the joint body 2 and the bottle body 1. A ring 18 is fixedly sleeved on the outer wall of the joint body 2. The ring 18 and the top of the bottle body 1 are fixed by multiple second bolts 19, which makes it easy to disassemble the joint body 2 from the bottle body 1 and recycle the joint body 2.

[0028] When in use, the filling head 21 is aligned with the top of the joint body 2 and inserted. When the filling head 21 presses the hollow tube 6 downward, the hollow tube 6 pushes the sealing plate 5 to move downward and away from the multiple air inlets 4. Then the gas in the filling head 21 is discharged into the bottle body 1 through the air holes 20 and the air inlets 4 on the hollow tube 6, thereby completing the filling of the bottle body 1. After the filling is completed, it is only necessary to slowly pull out the filling head 21. Multiple compression springs 703 push the piston rod 702 to drive the sealing plate 5 to move upward automatically, thereby sealing the multiple air inlets 4 to prevent air leakage. Then the staff screws the threaded cover 15 to the top of the joint body 2, thereby further improving the sealing of the joint body 2.

[0029] Refer to the instruction manual Figure 1-Figure 5 The bottom of the joint body 2 is provided with a ring plate 8, and the top of the ring plate 8 is provided with a plurality of threaded holes 9. The bottom surface of the outer wall of each sleeve 701 is processed with threads, and the sleeve 701 is threadedly connected with the threaded hole 9 through threads, which is convenient for disassembling the sleeve 701. The bottom of the ring plate 8 is threadedly connected with a plurality of first bolts 10, and the ring plate 8 is fixed to the bottom of the joint body 2 through a plurality of first bolts 10, which is convenient for the staff to disassemble the ring plate 8;

[0030] In addition, a first sealing ring 11 is fixedly embedded in the top inner wall of the annular groove 3, and a sealing groove 12 matched with the first sealing ring 11 is opened on the top of the sealing plate 5. The first sealing ring 11 is inserted in the sealing groove 12 to improve the sealing between the sealing plate 5 and the annular groove 3. Limit blocks 13 are fixedly provided on the inner walls on both sides of the annular groove 3. The two limit blocks 13 are staggered with multiple air inlets 4 and multiple sleeves 701. Limit grooves 14 matched with the limit blocks 13 are opened on both sides of the sealing plate 5. The limit blocks 13 are arranged in the limit grooves 14 to improve the stability of the sealing plate 5 when sliding.

[0031] By cooperating with the first sealing ring 11 and the sealing groove 12, the sealing performance between the sealing plate 5 and the annular groove 3 can be improved. After not in use, the staff can remove the joint body 2 from the bottle body 1, then loosen the multiple first bolts 10, remove the ring plate 8 from the bottom of the joint body 2, adjust the number of sleeves 701, and also remove the sealing plate 5 from the bottom of the annular groove 3, and recycle the joint body 2 and the components inside the joint body 2.

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sealed filling joint for filling a disposable gas cylinder, comprising a joint body (2) arranged on the top of a bottle body (1), wherein the bottom end of the joint body (2) penetrates through the top of the bottle body (1) and is connected to the inside of the bottle body (1), and is characterized in that: An annular groove (3) is provided inside the joint body (2); a plurality of air inlets (4) connected to the annular groove (3) are provided on the outer wall of the joint body (2); a sealing plate (5) for sealing the plurality of air inlets (4) is provided inside the annular groove (3); A hollow tube (6) is fixedly provided on the top of the sealing plate (5), and a plurality of elastic support components (7) are fixedly provided on the bottom of the sealing plate (5), each elastic support component (7) comprises a sleeve (701), a piston rod (702) passes through the interior of each sleeve (701), the top ends of the plurality of piston rods (702) are in contact with the bottom of the sealing plate (5), and a compression spring (703) is fixedly provided on the bottom end of each piston rod (702), and the bottom end of the compression spring (703) is fixed to the inner wall of the bottom of the sleeve (701).

2. The sealed filling joint for filling disposable gas cylinders according to claim 1, characterized in that: A ring plate (8) is provided at the bottom of the joint body (2), a plurality of threaded holes (9) are provided at the top of the ring plate (8), threads are processed on the bottom surface of the outer wall of each sleeve (701), and the sleeve (701) is threadedly connected to the threaded hole (9) via the thread, so that the sleeve (701) is easy to disassemble.

3. The sealed filling joint for filling a disposable gas cylinder according to claim 2, characterized in that: The bottom of the ring plate (8) is threadedly connected with a plurality of first bolts (10), and the ring plate (8) is fixed to the bottom of the joint body (2) via the plurality of first bolts (10), so that the ring plate (8) is easily disassembled.

4. The sealed filling joint for filling a disposable gas cylinder according to claim 1, characterized in that: A first sealing ring (11) is fixedly embedded in the inner wall of the top of the annular groove (3); a sealing groove (12) matching the first sealing ring (11) is formed on the top of the sealing plate (5); the first sealing ring (11) is inserted into the sealing groove (12) to improve the sealing performance between the sealing plate (5) and the annular groove (3).

5. The sealed filling joint for filling disposable gas cylinders according to claim 1, characterized in that: Limit blocks (13) are fixedly provided on the inner walls on both sides of the annular groove (3); the two limit blocks (13) are staggeredly distributed with the plurality of air inlets (4) and the plurality of sleeves (701); limit grooves (14) matching the limit blocks (13) are provided on both sides of the sealing plate (5); the limit blocks (13) are arranged in the limit grooves (14) to improve the stability of the sealing plate (5) when sliding.

6. The sealed filling joint for filling a disposable gas cylinder according to claim 1, characterized in that: A threaded cover (15) is threadedly connected to the top of the joint body (2), and a connecting rope (16) is fixed between the threaded cover (15) and the joint body (2) to prevent the threaded cover (15) from being lost.

7. The sealed filling joint for filling a disposable gas cylinder according to claim 1, characterized in that: A second sealing ring (17) is fixedly embedded in the outer wall of the joint body (2) for improving the sealing performance between the joint body (2) and the bottle body (1); a collar (18) is fixedly sleeved on the outer wall of the joint body (2); the collar (18) and the top of the bottle body (1) are fixed by a plurality of second bolts (19) to facilitate disassembly of the joint body (2).

8. The sealed filling joint for filling disposable gas cylinders according to claim 1, characterized in that: The outer wall of the hollow tube (6) is provided with a plurality of air holes (20), and the plurality of air holes (20) are evenly distributed on the outer wall of the hollow tube (6). A filling head (21) adapted to the hollow tube (6) is provided above the hollow tube (6) for filling the bottle body (1) with gas.

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