CN206669323U - A kind of strong dioxide bottle charging joint of sealing - Google Patents

Abstract

The utility model discloses a carbon dioxide cylinder filling joint with strong sealing performance, which relates to a filling joint. The utility model comprises a joint body, a joint and a movable rod. The joint body is provided with a joint body cavity matched with the left end part of the movable rod. The left end of the movable rod is provided with a head protruding from the joint body cavity. The movable rod There is an inner cavity inside, and the left end of the movable rod is provided with a through hole on the sealing contact surface with the joint body. The opening and closing state of the through hole is controlled by the relative displacement of the movable rod in the joint body. To connect, the interior of the joint is provided with a joint cavity that communicates the inner cavity with the air inlet of the gas cylinder. In the utility model, the through hole that can communicate with the inner cavity and the inflating device is arranged on the sealing contact surface of the movable rod and the joint body, and the surface contact between the movable rod and the joint body has better sealing performance and more reliable work; the utility model It also has the characteristics of strong versatility, wide application range, simple structure, convenient manufacture, and high filling efficiency.

Description

A carbon dioxide cylinder filling joint with strong airtightness

technical field

The utility model relates to a filling joint of a carbon dioxide gas cylinder, in particular to a filling joint of a carbon dioxide gas cylinder with strong sealing performance.

Background technique

During the filling process of the carbon dioxide gas cylinder, one end of the filling joint is connected to the bus bar, the filling joint is installed on the filling jig, and then the filling jig is connected to the carbon dioxide gas cylinder, so that the other end of the filling joint One end is connected with the intake valve of the carbon dioxide cylinder to realize inflation. By installing the filling connectors on different gas storage tanks, the sequential filling of carbon dioxide gas cylinders can be realized. During this process, in order to avoid gas waste, a ball valve is often installed on the filling jig. When a carbon dioxide cylinder is filled, the ball valve is closed manually, and then the filling jig is removed to prepare for the next filling process. . The filling process requires frequent operation of the ball valve, which affects production efficiency. The ball valve will also wear out due to frequent use, resulting in gas leakage, waste of resources, great safety hazards, and environmental pollution.

After inquiry, it is found that the existing patent application number is CN201220397300.4 utility model patent, its authorized announcement date is February 20, 2013, and the patent name is: filling joint. The application includes a joint body with an inner cavity and openings at both ends, a one-way valve for controlling fluid flow or disconnection, and a control structure for controlling the opening or closing of the one-way valve. The one-way valve and the control structure are installed inside cavity. When the inflation is over, the gas storage cylinder no longer exerts force on the plug, and the ejector rod and the plug are released. Since the ejector rod is blocked by the protrusion, the plug and the ejector rod will not come out of the main body of the joint, and the sealing steel ball is in the spring and filled Under the action of gas back pressure inside the hose, the sealing gasket is pressed tightly, the gas path is cut off, and the gas is closed inside the filling hose. This application realizes the functional combination of the filling joint and the ball valve, and the filling joint can be automatically closed after inflation, which is more convenient to use. But the filling joint also has the following problems:

1. The connection between the inflation hose and the filling joint needs to be equipped with a matching part that is offset against the spring of the filling joint, and the gas storage cylinder also needs to be provided with a specific structure at the connection with the filling joint, so as to be compatible with the filling joint. The head of the joint fits, in other words, the filling joint must be used with the inflatable device and the gas cylinder of a specific structure, and there are great limitations in use, and the scope of application is small.

2. The filling joint adopts the cooperation between the steel ball and the gasket to achieve sealing. The joint between the steel ball and the gasket is only in line contact, and the sealing performance is poor. As a result, the filling joint may still leak when it is closed. Unreliable.

3. The filling joint has complex structure, many parts and high production cost.

Utility model content

1. The technical problems to be solved by the utility model

The purpose of the utility model is to overcome the above-mentioned shortcomings existing in the existing filling joint, and provide a carbon dioxide cylinder filling joint with strong sealing performance. Adopting the technical scheme of the utility model, the through hole capable of connecting the inner cavity and the inflating device is set on the sealing contact surface of the movable rod and the joint body, and the surface contact between the movable rod and the joint body has better sealing performance and more efficient operation. The utility model has the advantages of reliability, strong versatility, wider application range, simple structure, convenient manufacture and greatly reduced production cost.

2. Technical solution

In order to achieve the above object, the technical solution provided by the utility model is:

A carbon dioxide gas cylinder filling joint with strong airtightness of the utility model comprises a joint body, a joint and a movable rod, and the inside of the joint body is provided with a joint body cavity matching the left end part of the movable rod, and The left end portion of the movable rod can slide inside the joint body, and the left end of the movable rod is provided with a head whose size is larger than the cavity of the joint body, and the head protrudes from the cavity of the joint body. There is an inner cavity, and the left end of the movable rod is provided with a through hole on the sealing contact surface with the joint body, which can communicate with the inner cavity and the inflation device, and the opening and closing state of the through hole is determined by the relative displacement of the movable rod in the joint body. Control, the right end of the movable rod is connected to the joint, and the inside of the joint is provided with a joint cavity connecting the inner cavity and the air inlet of the gas cylinder.

Furthermore, the body of the movable rod is a circular tube structure with an open right end.

Furthermore, the through hole is provided on the peripheral surface of the body of the movable rod and is located near the head.

Furthermore, the left end of the joint body is provided with a cavity for accommodating the head, and the cavity communicates with the cavity of the joint body and the inflation device, and the size of the cavity is larger than that of the head.

Furthermore, the left end of the joint body is provided with an external thread connected with the inflatable device.

Furthermore, the outer surface of the joint body is provided with a mounting portion.

Furthermore, the right end of the movable rod is provided with an external thread, and the joint is provided with an internal thread matching the above-mentioned external thread.

Furthermore, the head is provided with a mounting groove.

Furthermore, a sealing ring is provided at the end of the threaded connection between the movable rod and the joint.

Furthermore, the air outlet of the joint cavity of the joint is a spherical structure.

3. Beneficial effect

Compared with the existing known technology, the technical solution provided by the utility model has the following remarkable effects:

(1) A carbon dioxide gas cylinder filling joint with strong airtightness of the present invention, the through hole that can communicate with the inner cavity and the inflating device is located on the sealing contact surface of the movable rod with the joint body, and the movable rod and the joint Surface contact between body, better sealing performance, more reliable work.

(2) A carbon dioxide gas cylinder filling joint with strong airtightness of the present utility model, its hole is arranged on the peripheral surface of the body of the movable rod, and is located near the head, when the head of the movable rod slides to the most At the right end, the head of the movable rod fits with the left end surface of the joint body cavity to form the first seal, and the movable rod cooperates with the inner wall of the joint body cavity, and the through hole on the peripheral surface of the movable rod is sealed by the joint body. The inner wall of the cavity is blocked to form a second seal, and the sealing effect is extremely outstanding.

(3) A carbon dioxide cylinder filling joint with strong airtightness of the utility model, after one inflation action is completed, the head of the movable rod slides to the rightmost end under the push of the carbon dioxide liquid flow in the inflation device, that is, Fitting with the left end face of the cavity of the joint body, so as to realize the effect of automatic cutting, it is very convenient to use, greatly improves the filling efficiency, and works reliably.

(4) A carbon dioxide gas cylinder filling joint with strong airtightness of the utility model has a cavity for accommodating the head at the left end of the joint body, and the displacement of the head is always in the cavity, so the setting is more reasonable.

(5) A carbon dioxide gas cylinder filling joint with strong airtightness of the utility model, the right end of the movable rod is threadedly connected with the joint, and the joint is a wearing part, and the threaded connection can not only meet the sealing requirements, but also be easy to disassemble It is very convenient to use and replace the connector.

(6) A carbon dioxide gas cylinder filling joint with strong airtightness of the utility model has a sealing ring at the end of the screw connection between the movable rod and the joint, and the sealing effect of the movable rod and the joint is better.

(7) A carbon dioxide gas cylinder filling joint with strong airtightness of the utility model has an installation groove on the head of the movable rod, which facilitates the installation and connection between the movable rod and the joint.

Description of drawings

Fig. 1 is a structural schematic diagram of a carbon dioxide cylinder filling joint with strong airtightness of the present invention in a closed state;

Fig. 2 is a structural schematic diagram of a carbon dioxide cylinder filling joint with strong airtightness of the present invention in an open state;

Fig. 3 is a structural schematic diagram of a joint body of a carbon dioxide cylinder filling joint with strong airtightness of the present invention;

Fig. 4 is a structural schematic diagram of a movable rod of a carbon dioxide cylinder filling joint with strong airtightness of the present invention.

Explanation of the labels in the schematic diagram:

1. Joint body; 11. Installation part; 12. Joint body cavity; 13. Step; 14. Cavity; 2. Joint; 21. Joint cavity; 3. Movable rod; 31. Through hole; 32. Inner cavity ; 33, the head; 331, the mounting groove.

detailed description

In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

Example

Referring to Figures 1 to 4, a highly airtight carbon dioxide gas cylinder filling joint in this embodiment includes a joint body 1, a joint 2 and a movable rod 3, and the inside of the joint body 1 is provided with a left end part of the movable rod 3 Cooperating joint body cavity 12, and the left end portion of movable rod 3 can slide in the inside of joint body 1; Joint body cavity 12, as shown in Figure 1, when the head 33 and the left end face of joint body cavity 12 resist, it is the limit position of movable rod 3 sliding to the right in the joint body 1; the interior of movable rod 3 There is an inner cavity 32, specifically, the body of the movable rod 3 of the present embodiment is a circular tube structure with an open right end, and the head 33 is arranged on the left end of the body of the movable rod 3; The sealing contact surface is provided with a through hole 31 that can communicate with the inner cavity 32 and the inflatable device. The surface contact between the movable rod 3 and the joint body 1 has better sealing performance and more reliable operation. Preferably, the through hole 31 is in the movable rod. 3 at the same axial position in the circumferential direction is better, the opening and closing state of the through hole 31 is controlled by the relative displacement of the movable rod 3 in the joint body 1, more specifically, the through hole 31 is arranged on the movable rod 3 On the peripheral surface of the main body, and located near the head 33, when the head 33 of the movable rod 3 slides to the rightmost end, the head 33 of the movable rod 3 is attached to the left end surface of the joint body cavity 12, forming The first seal, and the movable rod 3 cooperates with the inner wall of the joint body cavity 12, the through hole 31 on the peripheral surface of the movable rod 3 is blocked by the inner wall of the joint body cavity 12, forming the second seal, and the sealing effect It is very prominent, when the head 33 of the movable rod 3 slides to the left to a certain position, the through hole 31 on the movable rod 3 moves out of the joint body cavity 12, and the inner wall of the joint body cavity 12 no longer blocks the through hole 31, and the through hole 31 is passed through. The hole 31 can communicate with the inner cavity 32 and the inflation device; furthermore, the left end of the joint body 1 is provided with a cavity 14 for accommodating the head 33 of the movable rod 3, the displacement of the head 33 is always in the cavity 14, and the setting is reasonable , the cavity 14 communicates with the joint body cavity 12 and the inflation device, and the size of the cavity 14 is greater than the size of the head 33; as shown in Figure 3, since the diameters of the cavity 14 and the joint body cavity 12 are different, so A step 13 is formed at the junction of the cavity 14 and the joint body cavity 12, and the step 13 can limit the right movement of the head 33 of the movable rod 3, and chamfering is provided at the step 13. Of course, the head 33 of the movable rod 3 Chamfers are also set at the corresponding positions, making the fit more stable and reliable.

Continuing from Fig. 1 and Fig. 2, the right end of the movable rod 3 in this embodiment is connected with the joint 2, when the joint 2 moves to the left to touch the joint body 1, it is the limit position where the movable rod 3 slides leftward in the joint body 1 , has a certain limit protection function, of course, the limit of the joint body 1 sliding to the left can also rely on the filling jig to complete. Specifically, the right end of the movable rod 3 is provided with an external thread, and the joint 2 is provided with an internal thread matched with the above-mentioned external thread, and the joint 2 is a wearing part. It is very convenient to use; and the end of the threaded connection between the movable rod 3 and the connector 2 is provided with a sealing ring 4, and the sealing effect between the movable rod 3 and the connector 2 Better; due to the threaded connection between the movable rod 3 and the joint 2, the head 33 of the movable rod 3 of the present embodiment is provided with a mounting groove 331, as shown in Figure 4, more specifically, the mounting groove 331 adopts a slot, which is convenient The installation and connection between the movable rod 3 and the joint 2; as shown in Figure 2, the inside of the joint 2 is provided with a joint cavity 21 communicating with the inner chamber 32 and the air inlet of the gas cylinder, and the joint cavity 21 of the joint 2 The air outlet is a spherical structure.

In addition, the left end of the joint body 1 of this embodiment is provided with an external thread connected with the inflator, and the outer surface of the joint body 1 is provided with a mounting part 11, and the mounting part 11 is in the form of a hexagon bolt head, as shown in Figure 1 . These are all prior art, and the specific structure and function will not be described in detail. The filling joint of this embodiment is made of H62 material.

It should be explained that the left and right directions in this application are only based on the representations in the drawings for easy understanding and are not limiting. In addition, since carbon dioxide is in a gaseous state under normal conditions, words such as "inlet", "outlet" and "inflating device" are used in this application, and are not limited to the fact that carbon dioxide is in a gaseous state when using the filling connector. .

In order to better understand the highly airtight carbon dioxide cylinder filling joint of this embodiment, the working state of this embodiment will be briefly described with reference to FIGS. 1 to 4 . When in use, the filling joint is installed on the filling jig, and the left end of the joint body 1 is connected to the inflation device (that is, the carbon dioxide bus), and the filling joint is always kept closed when it is not connected to the air inlet of the gas storage cylinder . Connect the filling jig to the air inlet of the gas cylinder, and adjust the lead screw of the filling jig to move the joint 2 to the left relative to the joint body 1, that is, to drive the movable rod 3 to move to the left, when the movable rod 3 When the through hole 31 on the top moves out of the joint body cavity 12, the carbon dioxide liquid flow in the inflator enters the inner cavity 32 from the cavity 14 through the through hole 31, and finally enters the gas storage bottle through the joint cavity 21 to realize inflation; After the action is completed and the lead screw of the filling fixture is loosened, the head 33 of the movable rod 3 slides to the rightmost end under the push of the carbon dioxide liquid flow in the inflator, that is, it fits with the step 13, so as to achieve the function of automatic cutting The effect is very convenient to use, the inflation efficiency is greatly improved, and the work is reliable.

A carbon dioxide gas cylinder filling joint with strong sealing performance of the utility model, the through hole capable of connecting the inner cavity and the inflating device is provided on the sealing contact surface of the movable rod with the joint body, and on the surface between the movable rod and the joint body. Contact, better sealing performance, more reliable work; the utility model is threadedly connected with the inflatable device, and is connected with the spherical surface of the air inlet of the carbon dioxide gas cylinder, which is the same as the connection structure of the traditional filling joint, that is, the utility model can be applied Compared with traditional inflatable devices and gas storage cylinders, it has strong versatility, wider application range, simple structure, convenient manufacture, and greatly reduced production costs; and the joints are easy to replace, easy to use, and resource-saving.

The structure of the filling joint of the present invention can also be used for filling some other liquid substances, not limited to carbon dioxide.

The above has schematically described the utility model and its implementation, which is not restrictive, and what is shown in the drawings is only one of the implementation of the utility model, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the purpose of the utility model, without creatively designing a structural method and embodiment similar to the technical solution, all should belong to the utility model protected range.

Claims (10)

1. A carbon dioxide cylinder filling joint with strong airtightness is characterized in that: it comprises a joint body (1), a joint (2) and a movable rod (3), and the inside of the joint body (1) is provided with a The left end part of the movable rod (3) is matched with the joint body cavity (12), and the left end part of the movable rod (3) can slide in the inside of the joint body (1), and the left end of the movable rod (3) is provided with There is a head (33) whose size is larger than the joint body cavity (12), the head (33) protrudes from the joint body cavity (12), and the inside of the movable rod (3) is provided with an inner cavity (32) , the left end of the movable rod (3) is provided with a through hole (31) capable of communicating with the inner cavity (32) and the inflation device on the sealing contact surface with the joint body (1), and the opening of the through hole (31) The closed state is controlled by the relative displacement of the movable rod (3) in the joint body (1), the right end of the movable rod (3) is connected with the joint (2), and the inside of the joint (2) is provided with a communication The joint cavity (21) of the inner cavity (32) and the air inlet of the gas cylinder. 2. A carbon dioxide gas cylinder filling joint with strong airtightness according to claim 1, characterized in that: the body of the movable rod (3) is a circular tube structure with an open right end. 3. A carbon dioxide cylinder filling joint with strong airtightness according to claim 2, characterized in that: said through hole (31) is arranged on the peripheral surface of the body of the movable rod (3), and is located Near the head (33). 4. A highly airtight carbon dioxide cylinder filling joint according to any one of claims 1 to 3, characterized in that: the left end of the joint body (1) is provided with a head (33) accommodating A cavity (14), the cavity (14) communicates with the joint body cavity (12) and the inflation device, and the size of the cavity (14) is larger than that of the head (33). 5. A carbon dioxide gas cylinder filling joint with strong airtightness according to claim 4, characterized in that: the left end of the joint body (1) is provided with an external thread connected with an inflating device. 6. A carbon dioxide gas cylinder filling joint with strong airtightness according to claim 5, characterized in that: the outer surface of the joint body (1) is provided with a mounting part (11). 7. A carbon dioxide cylinder filling joint with strong airtightness according to claim 1, characterized in that: the right end of the movable rod (3) is provided with an external thread, and the joint (2) is provided with a There are internal threads that match the above external threads. 8. A carbon dioxide gas cylinder filling joint with strong airtightness according to claim 7, characterized in that: said head (33) is provided with an installation groove (331). 9. A carbon dioxide cylinder filling joint with strong airtightness according to claim 7, characterized in that: a sealing ring is provided at the end of the threaded connection between the movable rod (3) and the joint (2) (4). 10. A carbon dioxide cylinder filling joint with strong sealing performance according to claim 9, characterized in that: the air outlet of the joint cavity (21) of the joint (2) is a spherical structure.