Aseptic vacuum hose connection seal

Abstract

The utility model provides a sterile vacuum hose connecting seal structure, including hose, pagoda head, quick detach female head and joint pipeline, wherein: the front end thread of pagoda head is installed in the inner hole wall of quick detach female head middle end position, and the rear end is brought in and is in interference pressure tight in the inner hole wall of quick detach female head rear end through the barb on its periphery with the hose of setting on it, and the front end of quick detach female head can detachable connection joint pipeline, the utility model discloses through the thread connection and barb interference pressure tight design of pagoda head and quick detach female head, has realized the quick installation of hose and joint pipeline and does not need tool, and has reliable anti -drop function, and its structure design is simple, and the manufacturing cost is low, and the structure is compact, and the space is small, and the installation is quick and nimble, and the use is flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the field of sterilization equipment, and in particular to a sterile vacuum hose connection sealing structure. Background Technology

[0002] In the production of aseptic preparations, the sealing performance of vacuum tubing connections directly affects the quality of drug production. Traditional tubing connection methods have many shortcomings: compression fittings require tools such as wrenches for installation, which is extremely inconvenient in an aseptic environment; quick-connect couplings are easy to install, but disassembly requires pressing the unlocking ring and leaves unsanitary areas that are difficult to clean thoroughly; quick-release crimp couplings require specialized crimping equipment, and the installation process is complex and irreversible. When used in an aseptic preparation production environment, these connection methods are not only difficult to operate but also prone to microbial contamination risks.

[0003] Existing hose connection structures generally suffer from the following drawbacks: the connection process requires additional tools or manual assistance, increasing the complexity of aseptic operations; especially when operating in a laminar flow environment (RABS), the installation and disassembly of traditional connection methods become even more difficult when wearing dustproof clothing and gloves. Therefore, considering the special requirements of aseptic preparation production for frequent disassembly and reassembly of pipelines, it is necessary to develop a connection structure that can ensure sealing performance while facilitating rapid installation and disassembly. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a sterile vacuum hose connection sealing structure that addresses the shortcomings of the existing technology. This structure has the advantages of simple structure, small space occupation, and convenient and quick installation.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0006] A sterile vacuum hose connection sealing structure includes a hose, a pagoda head, a quick-release female head, and a connector pipe, wherein: the front end of the pagoda head is threadedly installed on the inner wall of the quick-release female head at the middle position, and the rear end of the pagoda head, through barbs on its circumference, brings in the hose sleeved on it and presses it against the inner wall of the rear end of the quick-release female head; and the front end of the quick-release female head is detachably connected to the connector pipe.

[0007] Preferably, the pagoda head has barbs on its rear end periphery, wherein: there are several barbs, which are arranged at equal intervals along the length direction of the rear end of the pagoda head.

[0008] Preferably, an annular limiting platform is provided on the outer periphery of the middle end of the pagoda head, wherein the annular limiting platform cooperates with the limiting step on the inner wall of the quick-release female head, and its outer diameter is slightly smaller than the inner diameter of the limiting step.

[0009] Preferably, the front end of the pagoda head is provided with an external thread that can be detachably connected to the quick-release female head, and the inner wall of its front end is provided with a hexagonal through hole that mates with a hexagonal wrench.

[0010] Preferably, the quick-release female connector is composed of a coaxial and integrally connected hose connector and a pipe connector, wherein: the pipe connector is used to install the hose and the pagoda head, and the pipe connector is used to connect the connector pipe.

[0011] Preferably, the outer diameter of the hose connector is larger than the outer diameter of the pipe connector, the inner diameter of the hose connector is larger than the inner diameter of the pipe connector, the connection between the two outer circumferences is a beveled transition, and a groove is formed on the outer circumference of the front end of the pipe connector.

[0012] Preferably, the inner hole at the front end of the hose connector is provided with an internal thread that is threaded to the front end of the pagoda head, and the inner hole at the rear end is provided with an extrusion hole that is interference-fitted to the outer peripheral wall of the hose, and the inner diameter of the internal thread is smaller than the inner diameter of the extrusion hole.

[0013] More preferably, a limiting step is provided along the inner circumferential wall at the connection between the internal thread and the extrusion hole, wherein: the limiting step is installed in conjunction with the annular limiting platform on the pagoda head, and its inner diameter is slightly smaller than the inner diameter of the extrusion hole.

[0014] More preferably, a buffer hole is provided at the connection between the internal thread and the inner hole of the pipe connector, wherein: the inner diameter of the buffer hole is larger than the inner diameter of the internal thread, and the inner diameter of the internal thread is larger than the inner diameter of the inner hole of the pipe connector.

[0015] Preferably, the sterile vacuum hose connection sealing structure further includes a sealing ring fitted into the front groove of the quick-release female connector, wherein the sealing ring is an O-ring.

[0016] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0017] The sterile vacuum hose connection sealing structure provided by this utility model achieves rapid installation of the hose and connector pipe without tools through the threaded connection of the pagoda head and the quick-release female head and the barbed interference clamping design, and has a reliable anti-dislodgement function. The sealing structure is simple in design, low in manufacturing cost, compact in structure, occupies little space, and is quick to install and disassemble, and flexible and convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a sterile vacuum hose connection and sealing structure according to the present invention;

[0019] Figure 2 This utility model Figure 1 The diagram shows a partially enlarged view of part A in a sterile vacuum hose connection sealing structure.

[0020] Figure 3 This is a schematic diagram of the assembly structure of the pagoda head, quick-release female head and sealing ring in a sterile vacuum hose connection sealing structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the main structure of the pagoda head in the sterile vacuum hose connection sealing structure of this utility model;

[0022] Figure 5 This is a top view schematic diagram of the pagoda head in the sterile vacuum hose connection sealing structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the quick-release female connector in a sterile vacuum hose connection sealing structure of this utility model;

[0024] The accompanying figures are labeled as follows:

[0025] 100-Hose; 200-Pagoda head; 201-Barb; 202-Annular limiting platform; 203-External thread; 204-Hexagonal through hole; 300-Quick release female head; 301-Hose connector; 302-Pipe insertion part; 303-Internal thread; 304-Crimping hole; 305-Limiting step; 306-Buffer hole; 307-Groove; 400-Connector pipe; 500-Sealing ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In existing technologies, the connection methods for non-metallic hoses and pipe fittings present operational inconveniences. Compression fittings require a wrench to apply pressure to the threaded joint, quick-connect couplings require pressing the unlocking ring for disassembly, and quick-release crimp couplings rely on crimping machine molds for deformation and fixation. When operating in a sterile environment, these methods are difficult to perform due to the need for protective equipment, and there are unsanitary areas that are difficult to clean thoroughly, posing a risk of microbial contamination. However, sterile pharmaceutical production requires minimizing the risk of contamination, and traditional connection methods cannot meet the requirements for both manual operation and cleanliness.

[0029] To address these issues, research revealed that existing connection structures suffer from tool dependence and hygiene hazards. Analysis showed that integrating hose fixing and sealing functions into a standardized, hand-assembleable interface could eliminate the need for tools. Further consideration was given to using a barbed structure for hose self-locking, combined with a threaded connection for double fixation, while a quick-release interface with a smooth, recess-free surface eliminated hygiene risks. Ultimately, this resulted in a technical approach that achieves tool-free assembly through the synergistic effect of barbs and threads.

[0030] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, based on the above design concept, this application proposes a sterile vacuum hose connection sealing structure, including a hose 100, a pagoda head 200, a quick-release female head 300, and a connector pipe 400. The front end of the pagoda head 200 is threaded onto the inner wall of the quick-release female head 300 at its middle position, and the rear end of the pagoda head 200 uses barbs 201 on its circumference to bring in the sleeved hose 100 and press it against the inner wall of the rear end of the quick-release female head 300; and the front end of the quick-release female head 300 can be detachably connected to the connector pipe 400.

[0031] The hose 100 is a non-metallic hose, with its end interference-fitted onto the barb 201. The threaded installation at the front end of the pagoda head 200 refers to axial positioning achieved through a threaded pair, providing a detachable mechanical fixation. The barb structure refers to the circumferentially distributed protrusions at the rear end of the pagoda head 200. The barb 201 compresses the hose 100 during insertion into the inner hole at the rear end of the quick-release female head 300, achieving an interference fit. The inner wall of the quick-release female head 300 refers to the transition area connecting the pagoda head 200, which can be achieved using a stepped hole structure to form a cavity accommodating the threaded section. Interference fitting means that the outer diameter of the hose 100 is slightly larger than the inner diameter of the hole wall, which can be achieved by using the dimensional difference between the elastic material hose and the metal hole wall, generating continuous sealing pressure.

[0032] The pagoda head 200 is screwed into the middle section of the quick-release female head 300 via its front thread, forming a rigid connection reference. When the pagoda head 200 is screwed in, the rear barb 201 pushes the hose 100 towards the rear end of the quick-release female head 300. Under the wedge-shaped action of the barb and the compression of the outer tube body, the hose 100 undergoes radial expansion, forming an interference seal with the inner wall of the quick-release female head 300. The front end of the quick-release female head 300 is designed with a standardized interface, connecting to the connector pipe 400 via a plug-in or snap-fit ​​connection, ensuring a smooth, non-recessed connection surface. The threaded connection and barb crimping provide double fixation, eliminating the risk of axial displacement, while the detachable nature of the threaded pair facilitates maintenance and cleaning.

[0033] Through the above technical solution, this application enables the rapid connection and assembly of the pagoda head 200 with a flexible tube 100 and the connector pipe 400 by hand in a sterile environment, without the need for any tools. The combination of the barbed structure and threaded connection eliminates the need for traditional clamps or crimping tools, while avoiding the hygiene hazards associated with unlocking mechanisms. The dual function of interference fit and threaded fixation ensures connection reliability. The standardized interface design of the quick-release female head modularizes the connection between the flexible tube and the pipe, reducing the possibility of contamination during assembly.

[0034] In some of these embodiments, such as Figure 3 and Figure 4 As shown, this application further proposes to provide barbs 201 on the periphery of the rear end of the pagoda head 200, wherein there are several barbs 201, which are arranged at equal intervals along the length direction of the rear end of the pagoda head 200. The barbs 201 refer to the protruding structures provided on the periphery of the rear end of the pagoda head 200, which can be implemented as annular protrusions or conical protrusions, and are used to generate interference clamping force during the installation of the hose 100. The equal interval arrangement means that multiple barbs 201 are arranged at the same spacing along the axial direction of the pagoda head, which can be achieved through machining or mold forming, and is used to ensure that the hose 100 is subjected to uniform force.

[0035] When the hose 100 is manually fitted onto the rear end of the pagoda head 200 beforehand, the equidistantly spaced barbs 201 structure subject the inner wall of the hose to uniformly distributed radial pressure. Each barb 201 is independently embedded in the hose wall to form multi-point locking, preventing deformation or breakage of the hose 100 due to local stress concentration. In the axial direction, the equidistantly arranged barbs 201 form a continuous locking band, increasing the contact area between the hose 100 and the pagoda head 200, and preventing axial slippage of the hose 100 under vacuum negative pressure.

[0036] This application achieves a uniform interference fit between the hose 100 and the pagoda head 200, effectively preventing seal failure caused by uneven distribution of barbs. The multi-point locking effect generated by the equidistant arrangement of barbs 201 significantly improves connection stability and prevents the hose 100 from falling off in a vacuum environment.

[0037] In some of these embodiments, such as Figure 3 and Figure 4 As shown, this application further proposes to provide an annular limiting platform 202 on the outer periphery of the middle part of the pagoda head 200. The annular limiting platform 202 cooperates with the limiting step 305 on the inner wall of the quick-release female head 300, and its outer diameter is slightly smaller than the inner diameter of the limiting step 305.

[0038] The annular limiting platform 202 refers to the protruding structure formed around the outer periphery of the pagoda head 200. Specifically, it can be formed into a stepped annular boss using turning or injection molding processes. Its function is to provide a physical stop for the axial installation of the pagoda head 200 and the quick-release female head 300. The limiting step 305 refers to the stepped hole structure with side walls and an annular stop surface provided on the inner wall of the quick-release female head 300. Its function is to form a mating relationship with the annular limiting platform 202 to limit the screwing depth of the pagoda head 200.

[0039] When the pagoda head 200 is screwed into the quick-release female head 300, the annular limiting platform 202 moves axially along the inner hole of the quick-release female head 300 until it contacts the limiting step 305. Since the outer diameter of the annular limiting platform 202 is slightly smaller than the inner diameter of the limiting step 305, a clearance fit is formed, allowing the annular limiting platform 202 to be fully embedded inside the limiting step 305. When the annular limiting platform 202 moves axially to the annular stop surface, the pagoda head 200 cannot be screwed in further, and its axial position is precisely limited, preventing the hose 100 from being deformed due to over-tightening. Simultaneously, the contact surfaces of the annular limiting platform 202 and the limiting step 305 form mechanical interference, preventing axial movement of the pagoda head 200 under vacuum or vibration conditions.

[0040] This application achieves precise positioning and installation of the pagoda head 200 and the quick-release female head 300, avoiding crushing of the hose 100 or seal failure due to excessive screwing. Before use, the pagoda head 200 needs to be pre-suspended inside the quick-release female head 300 using an external tool to form an integral hose connector structure; when assembling this hose connector onto the connector pipe 400, no torque tool is required, and reliable installation can be completed with one hand in restricted operating environments such as sterile glove boxes.

[0041] In some of these embodiments, such as Figure 4 and Figure 5 As shown, this application further proposes that the front end of the pagoda head 200 is provided with an external thread 203 that can be detachably connected to the quick-release female head 400, and the inner wall of its front end is provided with a hexagonal through hole 204 that mates with a hexagonal wrench.

[0042] The external thread 203 is used to form a detachable mechanical connection with the corresponding thread on the inner wall of the quick-release female head 300. The hexagonal through hole 204 refers to the regular hexagonal through hole structure machined on the inner wall of the front end of the pagoda head 200, which is used to transmit torque to achieve the tightening or loosening of the threaded connection.

[0043] The engagement of the external thread 203 with the internal thread 303 on the quick-release female head 300 allows the pagoda head 200 to achieve axial displacement through rotation, thereby completing the connection or separation with the quick-release female head 300. The hexagonal through hole 204 allows a standard hex wrench to be inserted and apply rotational torque.

[0044] In some of these embodiments, such as Figure 3 and Figure 6 As shown, this application further proposes that the quick-release female head 300 in the sterile vacuum hose connection sealing structure is composed of a hose connection part 301 and a pipe insertion part 302 that are coaxial and integrally connected. The hose connection part 301 is used to install the hose 100 and the pagoda head 200, and the pipe insertion part 302 is used to connect the connector pipe 400.

[0045] The hose connector 301 refers to the end of the quick-release female connector 300 that assembles with the hose 100 and the pagoda connector 200. The pagoda connector 200 is fixed and the hose 100 is compressed via a threaded connection. The pipe insertion part 302 refers to the other end of the quick-release female connector 300 that connects with the external connector pipe 400. This can be achieved using a tubular structure with sealing grooves, and the pipe connection is completed through insertion. The coaxial integrated connection refers to the hose connector 301 and the pipe insertion part 302 forming an integral structure through a continuously extending axial solid structure. This can be achieved through injection molding or machining, eliminating assembly gaps in the separate structures.

[0046] The hose connector 301 is detachably connected to the front end of the pagoda head 200 via its internal thread 303, and simultaneously forms an interference fit with the outer wall of the hose 100 via the rear compression hole 304. The pipe insertion part 302 has a sealing ring 500 installed through its front groove 307, and forms a sealing contact with the inner wall of the connector pipe 400 during insertion. During aseptic operation, the operator only needs to align the pipe insertion part 302 of the quick-release female connector 300, which is pre-assembled with the hose 100 and pagoda head 200, with the connector 300 and insert it axially into the connector pipe 400 to complete the sealing connection, without the need to adjust the installation direction or use auxiliary tools.

[0047] In some of these embodiments, such as Figure 3 and Figure 6 As shown, this application further proposes that the outer diameter of the hose connection 301 is larger than the outer diameter of the pipe insertion part 302, the inner diameter of the hose connection 301 is larger than the inner diameter of the pipe insertion part 302, the connection between the two outer peripheral bodies is a slope transition, and a groove 307 is provided on the outer peripheral body of the front end of the pipe insertion part 302.

[0048] The beveled transition refers to the beveled surface connecting the outer periphery of the connection between the hose connector 301 and the pipe insertion part 302. This can be achieved using a chamfered or rounded transition structure. The groove 307 refers to the annular groove on the outer periphery of the front end of the pipe insertion part 302, which provides a standardized installation space for precise positioning of the sealing ring 500.

[0049] The difference in outer diameter between the hose connector 301 and the pipe insertion part 302 forms an external stepped structure, which limits the insertion depth of the hose 100 during assembly and prevents over-insertion that could lead to structural deformation. The difference in inner diameter forms a tapered transition within the internal channel, used to install the pagoda head 200 and to achieve communication between the inner diameter of the pagoda head 200 and the inner hole of the pipe insertion part 302. The beveled transition at the connection eliminates traditional right-angle joints and also limits the insertion depth into the connector pipe 400. The groove 307 at the front end of the pipe insertion part 302 provides a fixed installation position for the sealing ring 500, ensuring a uniform sealing pressure distribution when inserted into the connector pipe 400.

[0050] In some of these embodiments, such as Figure 3 and Figure 6 As shown, this application further proposes that the inner hole at the front end of the hose connection 301 is provided with an internal thread 303 that is threadedly connected to the front end of the pagoda head 200, and the inner hole at the rear end is provided with an extrusion hole 304 that is interference-fitted to the outer peripheral wall of the hose 100, and the inner diameter of the internal thread 303 is smaller than the inner diameter of the extrusion hole 304.

[0051] The internal thread 303 refers to the threaded structure on the inner wall of the front end of the hose connector 301, used to form a detachable mechanical lock with the external thread 203 at the front end of the pagoda head 200. The compression hole 304 refers to the inner hole at the rear end of the hose connector 301, used for an interference fit with the outer wall of the hose 100. The inner diameter of the internal thread 303 is smaller than the inner diameter of the compression hole 304, meaning that the two form a stepped difference in diameter, creating a functional division between the threaded connection area and the hose compression area.

[0052] Specifically, when an Allen wrench is used to screw the external thread 203 of the pagoda head 200 into the internal thread 303 of the hose connection 301, the axial tensile force generated by the thread engagement is limited to the threaded section. The interference fit between the compression hole 304 and the outer wall of the hose 100 achieves a seal through uniform radial compression, and the stepped hole diameter difference creates a clear functional separation between the threaded section and the compression hole section.

[0053] In some of these embodiments, such as Figure 3 and Figure 6 As shown, this application further proposes to provide a limiting step 305 along the inner circumferential wall at the connection between the internal thread 303 and the extrusion hole 304. The limiting step 305 is installed in conjunction with the annular limiting platform 201 on the pagoda head 200, and its inner diameter is slightly smaller than the inner diameter of the extrusion hole 304.

[0054] The limiting step 305 refers to the annular protrusion structure formed at the connection between the internal thread 303 and the extrusion hole 304. Specifically, it can be achieved by a stepped hole diameter variation, which realizes the positioning function by limiting the axial movement range of the pagoda head 200. The annular limiting platform 202 is used to form a physical contact surface with the limiting step 305 to prevent excessive screwing.

[0055] When the pagoda head 200 is screwed into the quick-release female head 300, its annular limiting platform 202 moves axially along the internal thread until it contacts the limiting step 305. Since the inner diameter of the limiting step 202 can be slightly smaller than the inner diameter of the compression hole 304, the annular limiting platform 202 is constrained within the annular space formed by the limiting step 305, preventing the pagoda head 200 from advancing further. At this time, the hose 100 is precisely pressed into the interference fit area formed by the compression hole 304 and the barb 201 on the pagoda head 200, avoiding misalignment of the sealing surface due to installation position deviation.

[0056] In addition, such as Figure 3 and Figure 5 As shown, this application further proposes that a buffer hole 306 be provided at the connection between the internal thread 303 and the inner hole of the pipe insertion part 302. The inner diameter of the buffer hole 306 is larger than the inner diameter of the internal thread 303, and the inner diameter of the internal thread 303 is larger than the inner diameter of the inner hole of the pipe insertion part 302. The buffer hole 306 refers to a transition cavity provided between the internal thread 303 and the inner hole of the pipe insertion part 302. Specifically, it can be achieved by stepped hole enlargement machining, and its inner diameter is between that of the internal thread 303 and the inner hole of the pipe insertion part 302, to avoid extrusion deformation of the inside of the pipe insertion part 302 during the axial screwing of the pagoda head 200.

[0057] In some of these embodiments, such as Figure 2 and Figure 3 As shown, this application further proposes to provide a sealing ring 500 within the groove 307 at the front end of the quick-release female connector 300. The sealing ring 500 is an O-ring. The groove 307 at the front end of the quick-release female connector 300 refers to an annular groove on the outer circumferential surface of the connection between the quick-release female connector 300 and the connector pipe 400, used to fix the axial position of the sealing ring 500 and limit its radial displacement. The sealing ring 500 is an O-ring made of silicone or fluororubber, utilizing its compression rebound characteristics to compensate for assembly gaps.

[0058] When the quick-release female connector 300, assembled with hose 100 and pagoda connector 200, is inserted into the connector pipe 400, the O-ring in the groove 307 undergoes elastic deformation under radial compression from the inner wall of the connector pipe, forming an annular sealing strip. This sealing strip covers the entire circumference of the connection interface, blocking any possible penetration paths.

[0059] In summary, combining Figures 1 to 6As shown, the working principle of this sterile vacuum hose connection sealing structure is as follows: First, the pagoda head 200 is squeezed into the inner wall of the hose 100. The pagoda head 200 and the inner wall of the hose 100 are interference fit, and the barb 201 structure on the pagoda head 200 can prevent it from detaching from the hose 100. Then, the pagoda head 200 is screwed into the internal threaded hole of the quick-release nut 300. The pagoda head 200 has a hexagonal through hole 204 inside, which is convenient for tightening with an Allen wrench. At this time, the barb 201 of the pagoda head 200 has brought the hose 100 into the inner hole of the quick-release nut 300. Then, the O-ring 500 is installed into the groove 307 on the outside of the quick-release nut 300. When connecting the connector pipe 400, simply hold the pagoda head 300 and insert it into the connector pipe 400 to complete the connection. This sealing structure is simple in structure, low in manufacturing cost, compact in structure, occupies little space, and is convenient and quick to install.

[0060] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0061] Secondly, the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0062] 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 within the protection scope of the present utility model.

Claims

1. A sterile vacuum hose connection sealing structure, characterized in that, It includes a flexible hose (100), a pagoda head (200), a quick-release female head (300), and a connector pipe (400), wherein: the front end of the pagoda head (200) is threaded onto the inner wall of the quick-release female head (300) at the middle position, and the rear end of the pagoda head (200) is inserted into the inner wall of the quick-release female head (300) by a barb (201) on its circumference and is press-fitted to the inner wall of the rear end of the quick-release female head (300); and the front end of the quick-release female head (300) is detachably connected to the connector pipe (400).

2. The sterile vacuum hose connection sealing structure according to claim 1, characterized in that, The pagoda head (200) is provided with barbs (201) on its rear periphery, wherein: there are several barbs (201) and they are arranged at equal intervals along the length direction of the rear end of the pagoda head (200).

3. The sterile vacuum hose connection sealing structure according to claim 1, characterized in that, An annular limiting platform (202) is provided on the outer periphery of the middle end of the pagoda head (200), wherein: the annular limiting platform (202) cooperates with the limiting step (305) on the inner wall of the quick-release female head (300), and its outer diameter is slightly smaller than the inner diameter of the limiting step (305).

4. The sterile vacuum hose connection sealing structure according to claim 1, characterized in that, The front end of the pagoda head (200) is provided with an external thread (203) that can be detachably connected to the quick-release female head (300), and the inner wall of its front end is provided with a hexagonal through hole (204) that cooperates with a hexagonal wrench.

5. The sterile vacuum hose connection sealing structure according to claim 1, characterized in that, The quick-release female connector (300) consists of a coaxial and integrally connected hose connector (301) and a pipe connector (302), wherein: the pipe connector (302) is used to install the hose (100) and the pagoda head (200), and the pipe connector (302) is used to connect the connector pipe (400).

6. The sterile vacuum hose connection sealing structure according to claim 5, characterized in that, The outer diameter of the hose connector (301) is larger than the outer diameter of the pipe connector (302), and the inner diameter of the hose connector (301) is larger than the inner diameter of the pipe connector (302). The connection between the outer circumferences of the two is a beveled transition, and a groove (307) is provided on the outer circumference of the front end of the pipe connector (302).

7. The sterile vacuum hose connection sealing structure according to claim 5, characterized in that, The inner hole at the front end of the hose connector (301) is provided with an internal thread (303) that is threaded to the front end of the pagoda head (200), and the inner hole at the rear end is provided with an extrusion hole (304) that is interference-fitted to the outer peripheral wall of the hose (100), and the inner diameter of the internal thread (303) is smaller than the inner diameter of the extrusion hole (304).

8. The sterile vacuum hose connection sealing structure according to claim 7, characterized in that, A limiting step (305) is provided along the inner circumferential wall at the connection between the internal thread (303) and the extrusion hole (304), wherein: the limiting step (305) is fitted with the annular limiting platform (202) on the pagoda head (200), and its inner diameter is slightly smaller than the inner diameter of the extrusion hole (304).

9. The sterile vacuum hose connection sealing structure according to claim 7, characterized in that, A buffer hole (306) is provided at the connection between the internal thread (303) and the inner hole of the pipe insertion part (302), wherein: the inner diameter of the buffer hole (306) is larger than the inner diameter of the internal thread (303), and the inner diameter of the internal thread (303) is larger than the inner diameter of the inner hole of the pipe insertion part (302).

10. The sterile vacuum hose connection sealing structure according to claim 1, characterized in that, It also includes a sealing ring (500) fitted inside the front groove (307) of the quick-release female head (300), wherein the sealing ring (500) is an O-ring.

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