Quick connection structure for BIB bag

Abstract

The utility model relates to a quick connection structure for a BIB bag, the BIB bag is provided with a bag mouth joint, the bag mouth joint is connected with a valve joint comprising an ejector pin used as a valve and a silica gel elastic sheet, and the quick connection structure comprises a quick connection joint and a first limiting structure arranged on the outer end face of the valve joint. The quick connector sequentially comprises a disc part used for abutting against the ejector pin, a connecting rib part, a connector body part capable of being connected with a valve cavity of the valve connector in a fluid sealing mode, a second limiting structure and a pipe opening part from inside to outside, and the connecting rib part is provided with fluid communication holes evenly distributed in the circumferential direction so as to be in fluid communication with the valve cavity and the pipe opening part. The first limiting structure and the second limiting structure are arranged in such a way, so that the second limiting structure is unlocked relative to the first limiting structure in the process that the quick connector is inserted into the valve cavity, and the second limiting structure is locked relative to the first limiting structure after the quick connector is inserted in place and rotates clockwise or anticlockwise by 90 degrees. The connector is simple in structure, convenient to produce and convenient and fast to insert and disassemble.

Description

Technical Field

[0001] This utility model relates to the field of beverage dispensing machine technology, specifically to a quick-connect structure for BIB bags. Background Technology

[0002] Currently, one of the packaging formats for concentrated ingredients suitable for beverage mixing machines on the market is the flexible BIB bag. For example... Figure 1 As shown, the existing BIB bag comes with a bag opening connector 101 during production. The bag opening connector 101 is connected to a valve connector 103 via a one-time snap fastener (other existing technologies also have threaded connections). The valve connector 103 is used to ensure that the BIB bag filled with concentrated liquid ingredients is sealed during manufacturing, transportation and storage. When used in a beverage dispensing machine, the valve connector 103 is threadedly connected to a one-way valve 105, allowing the concentrated liquid ingredients in the BIB bag to flow out through the bag opening connector 101, the valve connector 103 and the one-way valve 105.

[0003] like Figure 2 and Figure 3 As shown, the existing valve connector 103 includes a pin 113 and a silicone spring 123. When the one-way valve 105 is connected to the valve connector 103, the valve core 115 of the one-way valve 105 pushes the pin 113 inward, and the pin 113 pushes the silicone spring 123 inward, so that the concentrated liquid raw material in the BIB bag can enter the valve chamber 183 of the valve connector 103 through the liquid passage hole 1238 on the silicone spring 123, and flow out through the one-way valve 105. Of course, before the one-way valve 105 is connected to the valve connector 103, the ejector pin 113 is in a state of sealing the central mounting hole 163 on the partition wall 143 of the valve connector 103 outwards, while the silicone spring 123 is in a state of aggregating with the partition wall 143 of the valve connector 103 outwards, thereby preventing the bag opening connector 101 from communicating with the ring of slurry through holes (not shown) on the partition wall 143 of the valve connector 103 that are coaxially arranged with the central mounting hole 163. In other words, before the one-way valve 105 is connected to the valve connector 103, the valve connector 103 can function as a sealer for the BIB bag.

[0004] However, as Figures 1 to 3The existing technology shown has the following problems: 1) The valve connector 103 and the check valve 105 are threaded connections. Threaded connections necessarily involve thread rotation, and when connecting such soft packaging bags, it is easy for the threads to be misaligned or twisted, which can lead to leakage; 2) Opening the valve connector 103 requires the use of the check valve 105, which has many components (including valve core 115, spring 125, inner valve shell 135, outer valve shell 145, O-ring 155 to prevent liquid from flowing out after the check valve 105 is removed, and O-ring 165 to seal the valve cavity 183) and a complex structure. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides a quick-connect structure for BIB bags that is simple in structure, can be quickly inserted, and can completely avoid leakage. The overall design concept is to change the connection method of the valve connector and the one-way valve from threaded connection to quick-connect connection without changing the original bag opening connector on the BIB bag. The valve connector is designed and improved, and a new quick-connect connector is designed to replace the one-way valve.

[0006] To achieve the above objectives, this utility model provides a quick-connect structure for BIB bags. The BIB bag is provided with a bag opening connector, which is connected to a valve connector including a pin used as a valve and a silicone spring. The quick-connect structure includes a quick-connect connector and a first limiting structure disposed on the outer end face of the valve connector. The quick-connect connector, from the inside out, includes a disc portion for abutting the pin, a connecting rib portion, a connector body portion that can fluidly and sealingly engage with the valve cavity of the valve connector, a second limiting structure, and a pipe opening portion. The connecting rib portion has circumferentially distributed fluid communication holes for fluid communication with the valve cavity and the pipe opening portion, respectively. The first and second limiting structures are configured such that the second limiting structure is in an unlocked state relative to the first limiting structure during the entire process of the quick-connect connector being inserted into the valve cavity, and the second limiting structure is in a locked state relative to the first limiting structure after the quick-connect connector is inserted into place and rotated 90º clockwise or counterclockwise.

[0007] Compared with the prior art, this utility model has the following advantages: 1) The quick-connect coupling has a simple structure, which is convenient for production and manufacturing; 2) The quick-connect coupling can quickly connect to the valve joint by plugging it in, and lock it relative to the valve joint by rotating it clockwise or counterclockwise, which is simple and quick to operate; 3) When moving from the locked state to the unlocked state, i.e. when the quick-connect coupling needs to be removed, it can be quickly disassembled by simply reversing the operation (i.e., rotating it counterclockwise or clockwise); 4) The elimination of the threaded connection avoids liquid leakage caused by loose or misaligned threads.

[0008] Furthermore, the first limiting structure is configured as a pair of limiting buckles arranged radially symmetrically on the outer end face of the valve joint, and the second limiting structure is configured as a flange with a pair of radially symmetrically arranged notches. The flange is formed by extending radially outward from the entire circumference of the joint body. In the unlocked state, the pair of notches and the pair of limiting buckles are directly opposite each other, so that the flange and the valve joint do not interfere with each other. In the locked state, the pair of notches and the pair of limiting buckles are arranged in a cross shape and staggered, and the flange is axially limited and locked by the pair of limiting buckles.

[0009] The above structural design allows the flange (the part without a notch) to be locked in a relative limiting snap-lock, while the notch on the flange becomes the key for unlocking the quick-connect fitting relative to the valve fitting. The structure is very simple and easy to use.

[0010] Furthermore, a pair of limit latches have radially inward hooks that are positioned radially outside the notch in the unlocked state and lock the flange in the locked state.

[0011] Furthermore, the quick-connect coupling is integrally formed and has two sealing structures on its body, which can be fluidly and sealingly engaged with the valve cavity of the valve connector.

[0012] The above structure enables a fluid seal between the quick-connect fitting and the valve fitting.

[0013] Furthermore, the two sealing structures include a first sealing groove and a second sealing groove that are laterally spaced apart on the connector body, and a first sealing ring and a second sealing ring that are correspondingly installed in the first sealing groove and the second sealing groove.

[0014] These two sealing structures effectively ensure a fluid seal between the quick-connect fitting and the valve fitting.

[0015] Furthermore, the two sealing structures are configured such that when the quick-connect fitting is inserted into the valve cavity of the valve fitting and before the disc part contacts the ejector pin, the first sealing ring has already contacted the cavity wall of the valve cavity and achieved fluid sealing; when the quick-connect fitting continues to be pushed inward and the disc part pushes open the ejector pin, the second sealing ring also contacts the cavity wall of the valve cavity and achieves fluid sealing.

[0016] Through the above structural design, the first sealing structure ensures that the quick-connect fitting is sealed as soon as it enters the valve cavity of the valve fitting, and the second sealing structure further ensures the leak-free sealing function of the quick-connect fitting relative to the valve fitting.

[0017] Furthermore, the disc part, connecting rib part, connector body part, flange and pipe opening part of the quick connector are arranged coaxially. The connecting rib part includes four connecting ribs evenly distributed in the circumferential direction, and a fluid communication hole is formed between every two connecting ribs.

[0018] The above-described structure allows liquid to flow from the valve joint through the fluid communication hole of the quick-connect fitting and out through the pipe opening.

[0019] These and other aspects of the present invention will be more clearly illustrated by referring to the embodiments described below. Attached Figure Description

[0020] The structure of this utility model, as well as its further objects and advantages, will be better understood from the following description taken in conjunction with the accompanying drawings, wherein like reference numerals identify like elements:

[0021] Figure 1 This is a 3D exploded view of the bag opening connector, valve connector, and check valve of an existing BIB bag;

[0022] Figure 2 yes Figure 1 The front view of the assembled structure of the bag opening connector, valve connector, and check valve shown.

[0023] Figure 3 yes Figure 2 The assembled structure shown is a cross-sectional view along line CC.

[0024] Figure 4 This is a three-dimensional structural diagram of a quick-connect structure for a BIB bag according to a specific embodiment of the present invention, with the quick-connect joint in the unlocked state.

[0025] Figure 5 yes Figure 4 The front view of the BIB bag shown is constructed using a quick-connect structure.

[0026] Figure 6 yes Figure 5 The BIB bag shown is a cross-sectional view along line AA using a quick-connect structure.

[0027] Figure 7 It is similar to Figure 5 The view shows the BIB bag with a quick-connect structure locked in the figure;

[0028] Figure 8 yes Figure 7 The BIB bag shown is a cross-sectional view along the BB line using a quick-connect structure.

[0029] Figure 9 yes Figure 4 The diagram shows a three-dimensional structural representation of the quick-connect fittings of the BIB bag as seen from the outside.

[0030] Figure 10 yes Figure 9 The diagram shows a three-dimensional structure of the quick-connect connector as viewed from the inside. Detailed Implementation

[0031] The specific embodiments of this utility model will now be described in conjunction with the accompanying drawings.

[0032] In this document, the directional representations used to explain the structure and / or operation of the various parts of the disclosed embodiments, such as "inner," "outer," "left," "right," "front," and "rear," are not absolute but relative. These representations are appropriate when the various parts of the disclosed embodiments are located in the positions shown in the figures, and these representations will also change according to the change in the position or reference frame of the disclosed embodiments.

[0033] Figures 4 to 10 A quick-connect structure for a BIB bag according to a specific embodiment of the present invention is shown. For example... Figures 4 to 10 As shown, a bag opening connector 101 is provided on a BIB bag (not shown), and a valve connector 103 including a pin 113 and a silicone spring 123 serving as a valve is connected to the bag opening connector 101; the quick-connect structure of this embodiment includes a quick-connect connector 5 and a first limiting structure provided on the outer end face of the valve connector 103, wherein the quick-connect connector 5 extends from the inside out (i.e., Figure 6 and Figure 8 From left to right, the structure includes a disc portion 51 for pressing against the ejector pin 113, a connecting rib portion 53, a connector body portion 55 that can be fluid-tightly engaged with the valve cavity 183 of the valve connector 103, a second limiting structure, and a nozzle portion 59. Figure 9 As shown, and with reference Figure 6 and Figure 8 The connecting rib 53 has circumferentially distributed fluid communication holes 530, which are used to communicate with the valve cavity 183 of the valve connector 103 and the pipe opening 59 of the quick connector 5 respectively.

[0034] like Figure 6 and Figure 8 As shown, and with reference Figure 4 , Figure 5 , Figure 7 The first and second limiting structures are configured such that the second limiting structure is unlocked relative to the first limiting structure throughout the entire process of the quick-connect connector 5 being inserted into the valve cavity 183, and locked relative to the first limiting structure after the quick-connect connector 5 is inserted and rotated 90º clockwise (or 90º counterclockwise in another embodiment). Specifically, as shown... Figure 4 As shown, and with reference Figure 5 and Figure 7In this embodiment, the first limiting structure is configured as a pair of limiting buckles 173 (integrated with the outer end face of the valve joint 103) arranged radially symmetrically on the outer end face of the valve joint 103. The second limiting structure is configured as a flange 57 having a pair of radially symmetrically arranged notches 573. The flange 57 is formed by extending radially outward from the entire circumference of the joint body portion 55. In the unlocked state, the pair of notches 573 and the pair of limiting buckles 173 are directly opposite each other, so that the flange 57 and the valve joint 103 do not interfere with each other. In the locked state, the pair of notches 573 and the pair of limiting buckles 173 are arranged in a cross-shaped staggered manner, and the flange 57 is locked by the pair of limiting buckles 173 to achieve axial limiting. Figure 8 This locked state is also clearly displayed.

[0035] like Figure 4 and Figure 8 As shown, in this embodiment, each limiting buckle 173 has a radially inward hook portion 1730, which is configured to be located radially outside the notch 573 in the unlocked state and to lock the flange 57 in the locked state.

[0036] like Figure 6 , Figure 8 , Figure 9 and Figure 10 As shown, in this embodiment, the quick-connect coupling 5 is integrally formed, and its coupling body 55 is provided with two sealing structures. These two sealing structures are fluid-tightly connected to the valve cavity 183 of the valve connector 103. Specifically, the two sealing structures include a first sealing groove 551 and a second sealing groove 552 that are laterally spaced apart on the coupling body 55, and a first sealing ring 553 and a second sealing ring 554 correspondingly installed in the first sealing groove 551 and the second sealing groove 552. Figure 6 As shown, the two sealing structures are configured such that before the quick-connect fitting 5 is inserted into the valve cavity 183 of the valve fitting 103 and before the disc portion 51 contacts the ejector pin 113, the first sealing ring 553 has already contacted the cavity wall of the valve cavity 183 and achieved fluid sealing; as Figure 8 As shown, when the quick-connector 5 continues to push inward and the disc portion 51 pushes open the ejector pin 113, the second sealing ring 54 also contacts the cavity wall of the valve cavity 183 and achieves fluid sealing.

[0037] Additionally, it should be noted that in this embodiment, the disc portion 51, connecting rib portion 53, connector body portion 55, flange 57, and pipe opening portion 59 of the quick connector 5 are arranged coaxially. The connecting rib portion 53 includes four connecting ribs 531 evenly distributed in the circumferential direction, and the fluid communication hole 530 is formed between every two connecting ribs 531.

[0038] The state after quick-connector 5 is inserted into place and rotated 90° clockwise relative to valve connector 103 is as follows: Figure 7 and Figure 8 As shown, at this time, the concentrated liquid material in the BIB bag will flow out as indicated by the arrow. The specific flow path is as follows: the concentrated liquid material in the BIB bag first enters the bag opening connector 101, and as in the prior art, it enters the valve chamber 183 of the valve connector 103 through the liquid passage hole 1238 on the silicone spring 123 and a ring of slurry passage holes (not shown) on the partition wall 143 of the valve connector 103, and then enters the pipe opening 59 of the quick connector 5 through the fluid communication hole 530 on the quick connector 5 and finally flows out.

[0039] The technical content and features of this utility model have been disclosed above. However, it is understood that, under the inventive concept of this utility model, those skilled in the art can make various changes and improvements to the above structure, including combinations of the technical features disclosed or claimed herein, as well as other combinations that explicitly include these features. All such modifications and / or combinations fall within the technical field to which this utility model pertains and are within the protection scope of the claims of this utility model.

Claims

1. A quick-connect structure for a BIB bag, the BIB bag being provided with a bag opening connector, the bag opening connector being connected to a valve connector comprising a pin serving as a valve and a silicone spring, characterized in that, The quick-connect structure includes a quick-connect fitting and a first limiting structure disposed on the outer end face of the valve fitting. The quick-connect fitting, from the inside out, includes a disc portion for abutting the ejector pin, a connecting rib portion, a fitting body portion that can fluidly and sealingly engage with the valve cavity of the valve fitting, a second limiting structure, and a pipe opening portion. The connecting rib portion has circumferentially distributed fluid communication holes for fluid communication with the valve cavity and the pipe opening portion, respectively. The first and second limiting structures are configured such that the second limiting structure is in an unlocked state relative to the first limiting structure during the entire process of the quick-connect fitting being inserted into the valve cavity, and the second limiting structure is in a locked state relative to the first limiting structure after the quick-connect fitting is inserted into place and rotated 90º clockwise or counterclockwise.

2. The quick-connect structure for BIB bags as described in claim 1, characterized in that, The first limiting structure is configured as a pair of limiting buckles arranged radially symmetrically on the outer end face of the valve joint, and the second limiting structure is configured as a flange with a pair of radially symmetrically arranged notches, which is formed by extending radially outward from the entire circumference of the joint body. In the unlocked state, the pair of notches and the pair of limiting buckles are directly opposite each other, so that the flange and the valve joint do not interfere with each other. In the locked state, the pair of notches and the pair of limiting buckles are arranged in a cross-shaped staggered manner, and the flange is axially limited and locked by the pair of limiting buckles.

3. The quick-connect structure for BIB bags as described in claim 2, characterized in that, The pair of limiting buckles have radially inward hooks, which are configured to be radially outside the notch in the unlocked state and to lock the flange in the locked state.

4. The quick-connect structure for BIB bags as described in any one of claims 2 to 3, characterized in that, The quick-connector is integral and has two sealing structures on its connector body, which are fluidly and sealingly engaged with the valve cavity of the valve connector.

5. The quick-connect structure for BIB bags as described in claim 4, characterized in that, The two sealing structures include a first sealing groove and a second sealing groove that are laterally spaced apart on the joint body, and a first sealing ring and a second sealing ring that are correspondingly installed in the first sealing groove and the second sealing groove.

6. The quick-connect structure for BIB bags as described in claim 5, characterized in that, The two sealing structures are configured such that when the quick connector is inserted into the valve cavity of the valve connector and before the disc portion contacts the ejector pin, the first sealing ring has already contacted the cavity wall of the valve cavity and achieved a fluid seal; when the quick connector continues to advance inward and the disc portion pushes open the ejector pin, the second sealing ring also contacts the cavity wall of the valve cavity and achieves a fluid seal.

7. The quick-connect structure for BIB bags as described in claim 6, characterized in that, The disc portion, the connecting rib portion, the connector body portion, the flange portion, and the pipe opening portion of the quick connector are arranged coaxially. The connecting rib portion includes four connecting ribs evenly distributed in the circumferential direction, and a fluid communication hole is formed between every two connecting ribs.

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