Leakage detection joint for dynamic powder loading bag sleeve

Abstract

The embodiment of the utility model discloses a leak detection joint for a dynamic powder loading bag sleeve, which relates to the technical field of vacuum leak detection and comprises a sealing joint, a locking piece and a sealing ring. The sealing joint is connected with a leak detection interface of the dynamic powder filling sheath, and the sealing ring is arranged between the sealing joint and the leak detection interface; the locking piece is arranged on the leakage detection interface in a sleeving manner, and the locking piece is connected with the sealing joint; and the locking piece is used for locking the sealing joint and the leakage detection interface, so that the sealing joint and the leakage detection interface compress the sealing ring, and therefore, good sealing between the sealing joint and the leakage detection interface can be realized, and air leakage can be effectively avoided. Meanwhile, due to the fact that a plastic hose is not adopted, the sealing connector cannot generate plastic chippings, and pollution to powder in the bag sleeve can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum leak detection, in particular to a leak detection joint for a dynamic powder bag. Background Art

[0002] In the field of vacuum leak detection, especially when it comes to leak detection of dynamic powder-filled bags, leak detection is required before the bags are filled with powder to determine the sealing performance of the prepared bags, ensure the quality of the prepared bags, and provide bags with good sealing performance for subsequent powder filling and sealing. Existing dynamic powder-filled bags are left with leak detection ports after welding, which are used to detect the sealing performance of the bags and for subsequent powder filling. Because the leak detection ports cannot be directly connected to the leak detection equipment, plastic hoses are usually used as connecting devices, with one end connected to the leak detection port and the other end connected to the vacuum bellows connected to the leak detection equipment. However, the plastic hose will shrink during vacuuming, affecting the leak detection effect.

[0003] Currently used dynamic powder loading sleeves vary in shape, and the corresponding leak detection port structures fixed to the sleeves for connecting to leak detection equipment are also different. However, the outer wall of the leak detection port is mostly a smooth cylindrical surface with a constant diameter. When connecting to the leak detection device, it is usually necessary to first connect a plastic hose to the leak detection port on the sleeve, and then process the other end to connect to the bellows on the leak detection equipment, resulting in a complex structure. The plastic hose has poor sealing when connected to the leak detection port on the sleeve. At the same time, the plastic hose shrinks during vacuum leak detection, which can easily cause the connection to fall off, resulting in leak detection failure. Moreover, when the plastic hose and the leak detection port of the sleeve are inserted and removed, mutual friction can easily cause plastic to fall off, causing plastic debris to fall into the sleeve, making it difficult to clean, contaminating the powder subsequently loaded into the sleeve, and causing the powder to be scrapped, resulting in significant economic losses. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present utility model is that in the prior art, when the sheath is being tested for leaks, the sealing performance of the plastic hose when connected to the leak detection port on the sheath is poor, and at the same time, the plastic hose shrinks during vacuum testing and the connection is easily disconnected, resulting in leak detection failure. In addition, when the plastic hose and the leak detection port of the sheath are plugged in and out, the mutual friction between them is likely to cause the plastic to fall off, causing plastic debris to fall into the sheath.

[0005] In order to solve the above problems, an embodiment of the present utility model proposes a leak detection joint for a dynamic powder filling bag, the dynamic powder filling bag includes a leak detection interface, the leak detection joint for the dynamic powder filling bag includes a sealing joint, a locking piece and a sealing ring; the sealing joint is connected to the leak detection interface, and the sealing ring is arranged between the sealing joint and the leak detection interface; the locking piece is arranged on the leak detection interface, and the locking piece is connected to the sealing joint; wherein, the locking piece is used to lock the sealing joint and the leak detection interface so that the sealing joint and the leak detection interface press the sealing ring.

[0006] A further technical solution is that the locking piece includes a fitting notch, and the leak detection interface is embedded in the fitting notch.

[0007] A further technical solution is that a protruding limiting portion is provided on the side wall of the leak detection interface, and the locking member abuts against the limiting portion.

[0008] A further technical solution is that the limiting portion is a limiting step arranged around the leak detection interface, and the bottom surface of the limiting step is parallel to the end surface of the leak detection interface.

[0009] A further technical solution is that a mounting plate is protruding from the side of the sealing joint, and the mounting plate is connected to the locking member via a fastener.

[0010] A further technical solution is that a first fastening hole is provided on the mounting plate, a second fastening hole corresponding to the first fastening hole is provided on the locking member, and the fastener passes through the first fastening hole and the second fastening hole to lock the mounting plate and the locking member.

[0011] A further technical solution is that there are multiple first fastening holes, and the multiple first fastening holes are evenly arranged on the mounting plate.

[0012] A further technical solution is that the number of the second fastening holes is the same as the number of the first fastening holes, and a plurality of the second fastening holes are evenly arranged on the locking member.

[0013] A further technical solution is that the fastener is a bolt, and the first fastening hole and the second fastening hole are bolt holes.

[0014] A further technical solution is that the sealing joint and the locking member are both made of stainless steel.

[0015] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include:

[0016] In the technical solution of the embodiment of the present utility model, the leak detection joint for the dynamic powder bag includes a sealing joint, a locking member, and a sealing ring; the sealing joint is connected to the leak detection interface, and the sealing ring is arranged between the sealing joint and the leak detection interface; the locking member is mounted on the leak detection interface and connected to the sealing joint; the locking member is used to lock the sealing joint and the leak detection interface, so that the sealing joint and the leak detection interface press the sealing ring tightly, thereby achieving a good seal between the sealing joint and the leak detection interface, effectively preventing air leakage. At the same time, since no plastic hose is used, the sealing joint will not generate plastic debris, which can effectively prevent contamination of the powder in the bag.

[0017] The quick connection structure designed in the utility model can quickly and effectively complete the sealing of the leak detection port of the package, and simultaneously has both vacuum leak detection and positive pressure leak detection modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0021] Figure 1 This is a cross-sectional view of a leak detection connector for a dynamic powder packing sleeve proposed in an embodiment of the present utility model;

[0022] Figure 2 This is an exploded view of a leak detection connector for a dynamic powder packing sleeve proposed in an embodiment of the present utility model;

[0023] Figure 3 This is a structural schematic diagram of a leak detection joint for a dynamic powder bag provided in an embodiment of the present utility model.

[0024] Reference numerals

[0025] Fastener 1, sealing ring 2, sealing joint 3, leak detection interface 4, locking member 5, mounting plate 31, first fastening hole 32, limiting portion 41, fitting notch 51, second fastening hole 52. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0028] It should also be understood that the terms used in this specification of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the specification of the embodiments of the present invention and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0029] See also Figure 1-Figure 3 The present invention provides a leak detection connector for a dynamic powder bag, which is used to connect the leak detection interface 4 on the dynamic powder bag and the leak detection equipment. On the one hand, it has good sealing performance, which can effectively prevent air leakage. On the other hand, no plastic debris will fall off, which can effectively prevent the powder in the bag from being contaminated. In order to achieve the above technical problems, the present invention includes a leak detection connector for a dynamic powder bag in the embodiment of the present invention, which includes a sealing connector 3, a locking member 5 and a sealing ring 2. The specific structure is described as follows:

[0030] The dynamic powder filling bag comprises a leak detection interface 4, which is used to detect the sealing performance of the dynamic powder filling bag and for subsequent powder filling.

[0031] The leak detection joint for the dynamic powder filling bag includes a sealing joint 3, a locking piece 5 and a sealing ring 2.

[0032] The sealing joint 3 is connected to the leak detection interface 4. Specifically, a mounting groove is provided at the bottom of the sealing joint 3, and a gas passage is provided at the bottom of the mounting groove. The sealing joint 3 is embedded in the mounting groove, and the sealing joint 3 is connected to the gas passage. The sealing ring 2 is provided between the sealing joint 3 and the leak detection interface 4. Specifically, the sealing ring 2 is provided between the end surface of the sealing joint 3 and the bottom surface of the mounting groove.

[0033] The locking piece 5 is sleeved on the leak detection interface 4, and the locking piece 5 is connected to the sealing joint 3; wherein, the locking piece 5 is used to lock the sealing joint 3 and the leak detection interface 4, so that the sealing joint 3 and the leak detection interface 4 press the sealing ring 2, thereby achieving good sealing.

[0034] Furthermore, the sealing joint 3 is used to be connected to a leak detection device, specifically, to be sealed and connected to a vacuum bellows on the leak detection device.

[0035] In the technical solution of the embodiment of the present utility model, the dynamic powder bag leak detection joint includes a sealing joint 3, a locking member 5, and a sealing ring 2; the sealing joint 3 is connected to the leak detection interface 4, and the sealing ring 2 is arranged between the sealing joint 3 and the leak detection interface 4; the locking member 5 is mounted on the leak detection interface 4 and connected to the sealing joint 3; the locking member 5 is used to lock the sealing joint 3 and the leak detection interface 4, so that the sealing joint 3 and the leak detection interface 4 press the sealing ring 2, thereby achieving a good seal between the sealing joint 3 and the leak detection interface 4, effectively preventing air leakage. At the same time, since no plastic hose is used, the sealing joint 3 will not produce plastic debris, which can effectively prevent contamination of the powder in the bag.

[0036] Furthermore, to facilitate assembly of the locking member 5 with the leak detection interface 4, in some embodiments, the locking member 5 includes a fitting notch 51, into which the leak detection interface 4 fits. The locking member 5 is sheet-shaped, and the dimensions of the fitting notch 51 match those of the leak detection interface 4, allowing the leak detection interface 4 to fit within the fitting notch 51. The design of the fitting notch 51 can also effectively reduce the material usage of the locking member 5, thereby lowering production costs.

[0037] Furthermore, a protruding stopper 41 is provided on the side wall of the leak detection interface 4, and the locking member 5 abuts against the stopper 41. The stopper 41 is used to limit the locking member 5, thereby better locking the leak detection interface 4 to the sealing joint 3. The stopper 41 is integrally formed with the leak detection interface 4, which not only ensures the reliability of the connection between the two, but also simplifies the processing and molding.

[0038] Furthermore, the limiting portion 41 is a limiting step provided around the leak detection interface 4, and the bottom surface of the limiting step is parallel to the end surface of the leak detection interface 4. The locking member 5 is sheet-shaped, so that the locking member 5 can fit tightly onto the limiting portion 41, making the locking force more uniform, thereby improving the sealing effect.

[0039] Furthermore, a mounting plate 31 is provided protruding from the side of the sealing joint 3. The mounting plate 31 is connected to the locking member 5 via a fastener 1. The mounting plate 31 is integrally formed with the sealing joint 3, which ensures a reliable connection between the two and simplifies the manufacturing process. The mounting plate 31 is parallel to the locking member 5.

[0040] Furthermore, the mounting plate 31 is provided with a first fastening hole 32, and the locking member 5 is provided with a second fastening hole 52 corresponding to the first fastening hole 32. The fastener 1 passes through the first fastening hole 32 and the second fastening hole 52 to lock the mounting plate 31 to the locking member 5. The fastener 1 can shorten the distance between the locking member 5 and the mounting plate 31, thereby achieving the locking of the mounting plate 31 to the locking member 5.

[0041] Furthermore, there are multiple first fastening holes 32 , and the multiple first fastening holes 32 are evenly arranged on the mounting plate 31 .

[0042] The number of the second fastening holes 52 is the same as the number of the first fastening holes 32 , and the plurality of second fastening holes 52 are evenly arranged on the locking member 5 .

[0043] Correspondingly, the number of fasteners 1 is also the same as the number of the first fastening holes 32 and the second fastening holes 52. For example, in this embodiment, the number of the first fastening holes 32, the second fastening holes 52 and the fasteners 1 are all three.

[0044] By evenly arranging a plurality of the first fastening holes 32 and the second fastening holes 52 , the uniformity of the force during locking can be improved, thereby improving the reliability of the seal.

[0045] Specifically, in this embodiment, the fastener 1 is a bolt, the first fastening hole 32 and the second fastening hole 52 are bolt holes, and the fastener 1 is made of stainless steel.

[0046] Furthermore, the sealing joint 3 and the locking member 5 are made of stainless steel. Stainless steel has stable performance, high reliability, high strength, and does not drop debris, and can effectively achieve a reliable rigid sealing connection between the sealing joint 3 and the leak detection interface 4.

[0047] The operating method of the dynamic powder packing leak detection joint provided in the embodiment of the utility model is as follows:

[0048] 1. First, put the locking piece 5 on the leak detection interface 4.

[0049] 2. Install the sealing ring 2 at the leak detection interface 4.

[0050] 3. Put the sealing joint 3 on the leak detection interface 4 of the sleeve and make it contact with the sealing ring 2;

[0051] 4. Use hexagon socket bolts to tightly connect the sealing joint 3 and the locking piece 5. At this time, the sealing ring 2 is in a compressed state.

[0052] 5. Connect the sealing joint 3 to the vacuum bellows on the leak detection equipment. During vacuuming, the atmosphere squeezes the sealing ring 2, which in turn applies pressure to the outer wall of the leak detection interface 4, ensuring a good seal at the joint. This ensures a stable connection and prevents leakage at the interface during the leak detection process.

[0053] This new solution allows for rapid connection of leak detection equipment to the package being tested without changing the existing package leak detection port structure, ensuring excellent sealing performance while also ensuring the stability of the connection between the package leak detection port and the leak detection equipment, thereby improving production efficiency. Furthermore, this interface configuration also enables positive pressure leak detection, and the actual connection method remains essentially the same: simply replace the existing vacuum equipment with a pressurized device or gas cylinder. Tested leak detection pressures of 0-5 MPa have demonstrated excellent sealing performance.

[0054] The quick connection structure designed in the utility model can quickly and effectively complete the sealing of the leak detection port, while taking into account both vacuum leak detection and positive pressure leak detection.

[0055] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0058] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0059] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0060] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0061] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, as long as these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

[0062] The above description is a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A leak detection joint for a dynamic powder bag, characterized in that: The dynamic powder filling bag includes a leak detection interface, and the dynamic powder filling bag uses a leak detection joint including a sealing joint, a locking piece and a sealing ring; the sealing joint is connected to the leak detection interface, and the sealing ring is arranged between the sealing joint and the leak detection interface; the locking piece is arranged on the leak detection interface, and the locking piece is connected to the sealing joint; wherein, the locking piece is used to lock the sealing joint and the leak detection interface so that the sealing joint and the leak detection interface press the sealing ring.

2. The leak detection joint for dynamic powder packing bag according to claim 1, characterized in that: The locking piece includes a fitting notch, and the leak detection interface is embedded in the fitting notch.

3. The leak detection joint for dynamic powder packing according to claim 2, characterized in that: A protruding limiting portion is provided on the side wall of the leak detection interface, and the locking member abuts against the limiting portion.

4. The leak detection joint for dynamic powder packing according to claim 3, characterized in that: The limiting portion is a limiting step arranged around the leak detection interface, and the bottom surface of the limiting step is parallel to the end surface of the leak detection interface.

5. The leak detection joint for dynamic powder packing bag according to claim 1, characterized in that: A mounting plate is protruded from the side of the sealing joint, and the mounting plate is connected to the locking member via a fastener.

6. The leak detection joint for dynamic powder packing bag according to claim 5, characterized in that: A first fastening hole is formed on the mounting plate, a second fastening hole corresponding to the first fastening hole is formed on the locking member, and the fastener passes through the first fastening hole and the second fastening hole to lock the mounting plate and the locking member.

7. The leak detection joint for dynamic powder packing according to claim 6, characterized in that: There are multiple first fastening holes, and the multiple first fastening holes are evenly arranged on the mounting plate.

8. The leak detection joint for dynamic powder packing bag according to claim 7, characterized in that: The number of the second fastening holes is the same as the number of the first fastening holes, and the plurality of second fastening holes are evenly arranged on the locking member.

9. The leak detection joint for dynamic powder packing according to claim 6, characterized in that: The fastener is a bolt, and the first fastening hole and the second fastening hole are bolt holes.

10. The leak detection joint for dynamic powder packing bag according to claim 1, characterized in that: The sealing joint and the locking member are both made of stainless steel.

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