Carbon dioxide filling structure

Abstract

The utility model discloses a carbon dioxide filling structure which comprises a carbon dioxide gas cylinder, a gas filling connector is arranged at the top of the carbon dioxide gas cylinder, a plug is connected to the gas filling connector in an inserted mode, a gas pipe is arranged at the top of the plug, and a gas inlet core rod is arranged at the bottom of the inner side of the gas filling connector. A plugging sleeve seat is arranged on the air inlet core rod, a reset spring is arranged at the position, located at the bottom of the plugging sleeve seat, of the air inlet core rod, and an inserting rod is arranged at the bottom of the inserting head. When the carbon dioxide gas cylinder is used for filling carbon dioxide, only an adaptive plug needs to be directly inserted into the gas filling interface, after insertion, due to the action of contact friction, the plug can be stably inserted, meanwhile, the plugging sleeve seat for closing can be automatically jacked open during insertion, and after the plug is pulled out, the plugging sleeve seat is automatically reset, so that the carbon dioxide gas cylinder is convenient to use. And through the arrangement of the structure, the filling efficiency is improved while it is guaranteed that filling operation is convenient and fast, and therefore the practicability of the structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon dioxide filling, and particularly relates to a carbon dioxide filling structure. Background Art

[0002] Carbon dioxide is a carbon oxide. Solid carbon dioxide, i.e. dry ice, can absorb a large amount of heat when it sublimates, so it is used as a refrigerant, such as in artificial rain and stage smoke effects. Liquid carbon dioxide is often compressed and added to beverages to form carbonated beverages. At the same time, carbon dioxide does not support combustion and is heavier than air, so it is often used as a fire extinguishing agent. It can also be used to make ammonium bicarbonate, baking soda, soda ash, urea, lead white pigment, etc.

[0003] A carbon dioxide filling structure is disclosed in the patent application number 202021390327.1. The inflation rod in this application is always connected to the inflation head. When inflation is needed, you only need to push the inflation rod downward to reach its inflation position, and the carbon dioxide in the inflation rod can be filled into the gas cylinder through the inflation port of the accommodating cavity. After inflation is completed, pull the inflation rod upward to return it to the closed position. At this time, the first sealing ring can effectively prevent the gas from entering the gas cylinder, and the sealing of the sealing plug and the first sealing hole and the sealing of the sealing plug and the inflation rod can effectively prevent the gas from being discharged to the outside, and the operation is convenient; in combination with the above application, and in connection with the existing carbon dioxide gas cylinder filling structure, it is necessary to screw and fix the plug between the gas cylinder when in use. The operation is cumbersome and affects the plug-in operation during filling, and at the same time affects the filling efficiency of carbon dioxide, thereby reducing the convenience and practicality of filling. For this reason, we propose a carbon dioxide filling structure. Utility Model Content

[0004] The purpose of the present utility model is to provide a carbon dioxide filling structure to solve the problem of the existing carbon dioxide cylinder filling structure proposed in the above background technology, which requires the plug to be screwed and fixed between the cylinder during use, which is cumbersome and affects the plugging operation during filling, and also affects the carbon dioxide filling efficiency, thereby reducing the convenience and practicality of filling.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a carbon dioxide filling structure, comprising a carbon dioxide cylinder, a charging interface provided on the top of the carbon dioxide cylinder, a plug connected to the charging interface, an air pipe provided on the top of the plug, an air intake core rod provided on the inner bottom of the charging interface, a sealing sleeve provided on the air intake core rod, and a return spring provided on the bottom of the sealing sleeve on the air intake core rod, a plug-in rod provided on the bottom of the plug, and an air intake inner groove provided on the inner side of the plug-in rod.

[0006] Preferably, the plug is connected by inserting the plug into the inflation interface through a plug rod.

[0007] Preferably, when the connecting rod is plugged into the inflation interface, the air intake core rod is also inserted into the air intake inner groove for assembly.

[0008] Preferably, the air intake core rod is further provided with an air intake hole, and when the air intake core rod is inserted into the air intake inner groove, the air intake hole is located inside the air intake inner groove.

[0009] Preferably, the air inlet includes air duct one and air duct two, the air duct one and air duct two are symmetrically arranged, and filter screens for filtering are also arranged in the air duct one and air duct two.

[0010] Preferably, when the plug rod is pulled out, the blocking sleeve will reset and block the air inlet through the blocking sleeve.

[0011] Preferably, a sliding protrusion is provided on the inner side of the blocking sleeve, and a limiting sliding groove is provided on the surface of the air intake core rod.

[0012] Preferably, the blocking sleeve and the air intake core rod are slidingly limited by a limiting sliding groove and a sliding protrusion.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. When the carbon dioxide cylinder in the application is used to fill carbon dioxide, a plug-in charging port is provided on the top of the carbon dioxide cylinder. When filling carbon dioxide gas, it is only necessary to directly insert the adapted plug into the charging port. After insertion, the plug can be inserted stably due to the contact friction. At the same time, the plugging sleeve used for closing can be automatically pushed open during insertion. When the plug is pulled out, the plugging sleeve automatically returns to its original position. This structural arrangement ensures convenient filling operation while improving filling efficiency, thereby enhancing the practicality of the structure.

[0015] 2. At the same time, a limiting groove for stable limiting is provided on the sealing sleeve, which has the function of limiting the airway of the sealing sleeve and ensuring the stability of the sealing sleeve to avoid displacement when the sealing sleeve moves. In addition, a double-channel structure is provided in the air inlet of the structure. The double-channel structure can avoid the inability to inflate when blocked by debris on one side, thereby improving the practicality and functionality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the inflation interface of the utility model;

[0018] Figure 3This is a schematic diagram of the cross-sectional structure of the air intake core rod of the utility model;

[0019] Figure 4 This is a structural diagram of the sealing sleeve of the utility model;

[0020] In the figure: 100, carbon dioxide cylinder; 101, charging interface; 102, plug; 103, air pipe; 200, air inlet core rod; 201, limiting slide; 202, blocking sleeve; 203, return spring; 204, plug rod; 205, air inlet inner groove; 300, air inlet hole; 301, air duct one; 302, air duct two; 303, filter; 400, sliding protrusion. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1 and Figure 2 The utility model provides a technical solution: when using carbon dioxide, it needs to be filled into a gas cylinder for storage. The carbon dioxide stored in the gas cylinder can be used in industry, medical treatment, aerospace, aquariums, as well as chemical, pharmaceutical, food and other industries. A carbon dioxide filling structure includes a carbon dioxide gas cylinder 100, a gas filling interface 101 is fixedly installed on the top of the carbon dioxide gas cylinder 100, a plug 102 is plugged into the gas filling interface 101, an air pipe 103 is provided on the top of the plug 102, and an air intake core rod is fixedly installed on the inner bottom of the gas filling interface 101 200, a sealing sleeve 202 is provided on the air intake core rod 200, and a return spring 203 is sleeved on the bottom of the sealing sleeve 202 on the air intake core rod 200, a connecting rod 204 is provided at the bottom of the plug 102, and an air intake inner groove 205 is provided on the inner side of the connecting rod 204. When the filling structure is used for filling on an existing gas cylinder, the plug 102 connected to the filling interface 101 is taken out, and the plug 102 is connected to the air supply equipment through the air pipe 103. At the same time, the plug 102 is plugged into and aligned with the filling interface 101, and then the air supply equipment is opened for filling.

[0024] Specifically, the plug 102 is inserted into the inflation interface 101 through the plug rod 204 for connection, and when the plug rod 204 is plugged into the inflation interface 101, the air intake core rod 200 is also inserted into the air intake inner groove 205 for assembly. During the insertion and filling process, when the plug 102 is plugged into the inflation interface 101, the plug rod 204 on the plug 102 is inserted into the inflation interface 101. During the insertion process, the air intake core rod 200 on the inner side of the inflation interface 101 is inserted into the air intake inner groove 205 opened on the plug rod 204, and the air intake core rod 200 is gradually inserted. The plug-in rod 204 will push the blocking sleeve 202 open. When the blocking sleeve 202 is pushed open and moved on the air intake core rod 200, the blocking sleeve 202 will squeeze the return spring 203 to deform, and then the air intake hole 300 on the air intake core rod 200 is located at the air intake inner groove 205 and the air supply equipment is opened. This method is convenient for plugging in, and a sealing rubber strip is also provided between the plug-in rod 204 and the inflation interface 101. At the same time, the rubber strip can also be used to increase friction, thereby ensuring stability after plugging in and improving the filling efficiency of the equipment.

[0025] Example 2

[0026] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The utility model provides a technical solution: a carbon dioxide filling structure, the air inlet core rod 200 is also provided with an air inlet hole 300, and when the air inlet core rod 200 is inserted into the air inlet inner groove 205, the air inlet hole 300 is located in the air inlet inner groove 205, the air inlet hole 300 includes an air channel 1 301 and an air channel 2 302, the air channel 1 301 and the air channel 2 302 are symmetrically arranged, and a filter screen 303 for filtering is fixedly installed in the air channel 1 301 and the air channel 2 302, when the plug-in rod 204 is pulled out, the blocking sleeve 202 will reset, and the air inlet hole 300 will be blocked by the blocking sleeve 202, the gas enters the air inlet hole 300 through the air inlet inner groove 205, and enters the carbon dioxide cylinder 100 through the air channel 1 301 and the air channel 2 302 to complete the filling.

[0027] Specifically, an integrated sliding protrusion 400 is provided on the inner side of the blocking sleeve 202, and a limiting groove 201 is provided on the surface of the air intake core rod 200. The blocking sleeve 202 and the air intake core rod 200 are also slidingly limited by the limiting groove 201 and the sliding protrusion 400. When the blocking sleeve 202 slides on the air intake core rod 200, it is also limited by the limiting groove 201 and the sliding protrusion 400 to ensure the stability of the blocking sleeve 202. A filter 303 is also provided in the airway 1 301 and the airway 2 302 to prevent impurities from entering the carbon dioxide cylinder 100 before and after filling, further improving the practicality of the structure and thus better filling and use.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbon dioxide filling structure, comprising a carbon dioxide cylinder (100), characterized in that: The top of the carbon dioxide cylinder (100) is provided with a gas charging interface (101), a plug (102) is plugged into the gas charging interface (101), a gas pipe (103) is provided on the top of the plug (102), an air intake core rod (200) is provided at the bottom inside the gas charging interface (101), a blocking sleeve (202) is provided on the gas intake core rod (200), and a return spring (203) is provided on the gas intake core rod (200) at the bottom of the blocking sleeve (202), a plug rod (204) is provided at the bottom of the plug (102), and an air intake inner groove (205) is provided on the inner side of the plug rod (204).

2. A carbon dioxide filling structure according to claim 1, characterized in that: The plug (102) is inserted into the inflation interface (101) via the plug rod (204) for connection.

3. A carbon dioxide filling structure according to claim 2, characterized in that: When the plug-in rod (204) is plugged into the inflation interface (101), the air intake core rod (200) is also inserted into the air intake inner groove (205) for assembly.

4. A carbon dioxide filling structure according to claim 3, characterized in that: An air intake hole (300) is also provided on the air intake core rod (200), and when the air intake core rod (200) is inserted into the air intake inner groove (205), the air intake hole (300) is located inside the air intake inner groove (205).

5. A carbon dioxide filling structure according to claim 4, characterized in that: The air inlet (300) comprises an airway 1 (301) and an airway 2 (302), wherein the airway 1 (301) and the airway 2 (302) are symmetrically arranged, and a filter (303) for filtering is further arranged in the airway 1 (301) and the airway 2 (302).

6. The carbon dioxide filling structure according to claim 5, characterized in that: When the plug rod (204) is pulled out, the blocking sleeve (202) is reset, and the air inlet (300) is blocked by the blocking sleeve (202).

7. The carbon dioxide filling structure according to claim 1, characterized in that: A sliding protrusion (400) is provided on the inner side of the blocking sleeve (202), and a limiting sliding groove (201) is provided on the surface of the air intake core rod (200).

8. The carbon dioxide filling structure according to claim 7, characterized in that: The blocking sleeve (202) and the air intake core rod (200) are also slidably limited via a limiting sliding groove (201) and a sliding protrusion (400).

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