Sterile integrated combination valve

Abstract

The utility model relates to the technical field of fluid conveying equipment, in particular to a sterile integrated combination valve which comprises a combination valve body, the combination valve body comprises a sterile diaphragm valve, a sterile single-seat valve, a sterile reversing valve and a three-way pipe connector, the sterile diaphragm valve is connected with a material input pipeline, and the sterile single-seat valve is connected with a material output pipeline; the sterile reversing valve is circularly communicated with the steam pipeline, and a valve cavity of the sterile reversing valve is communicated with a valve cavity of the sterile single-seat valve through one connector; and the three-way pipe connecting piece is connected with the valve cavity of the sterile single-seat valve through one interface and is connected with the valve cavity of the sterile reversing valve through the other interface. A sterile combination valve structure is constructed, a short circulation path and a good sterile environment maintenance effect are provided for material filling, sterilization before filling, sterile maintenance during filling and sterilization and cleaning after filling are flexibly achieved, the operation difficulty is lowered, the equipment structure is simplified, and the requirement for the installation space is low.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid conveying equipment, in particular to an aseptic integrated combination valve. Background Art

[0002] In food production-related industries, the transportation of materials requires high standards for hygiene and safety conditions. Especially during filling, because the pipelines not only need to meet sterile conditions, but also need to discharge excess air, accurately control the material flow rate, and circulate excess materials. According to existing technical conditions, if these goals are to be achieved simultaneously in a sterile environment, it is generally necessary to use a more complex multi-pipe connection structure to build a sterile environment, and to set up multi-way valve control to meet the guidance and discharge of different media. However, the actual application scenarios are varied. For example, due to space limitations, it is difficult to lay pipelines, or in applications that are sensitive to flow rate paths, the existing technology often cannot effectively control the path length through multi-way pipeline connections, and it is difficult to accurately control the flow rate. Utility Model Content

[0003] The purpose of the utility model is to provide a sterile integrated combination valve to solve the above technical problems.

[0004] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0005] The aseptic integrated combination valve comprises a combination valve body, wherein the combination valve body comprises:

[0006] Aseptic diaphragm valve, which is used for material input and has a high sanitation level, and the shaft moving part is completely wrapped by the diaphragm and is not in contact with the outside world. The material flow valve cavity can be kept sterile at the beginning of the material circulation and feeding process. The aseptic diaphragm valve is connected to the material input pipeline;

[0007] Aseptic single-seat valve, which is used for filling after material output and has good flow control capability, and is connected to the material output pipeline;

[0008] A sterile reversing valve, which is used for high-temperature sterilization of the material flow valve cavity and exhaust of excess air. The sterile reversing valve is circulated in communication with a steam pipeline so that high-temperature steam circulates through the valve cavity to sterilize the valve cavity and the pipeline connected to the valve cavity. The valve cavity of the sterile reversing valve is connected to the valve cavity of the sterile single-seat valve through one of its interfaces;

[0009] A three-way pipe connector is connected to the valve cavity of the sterile single-seat valve through one interface and is connected to the valve cavity of the sterile reversing valve through another interface.

[0010] The utility model constructs an aseptic combination valve through an aseptic reversing valve, an aseptic diaphragm valve, an aseptic single-seat valve and a three-way pipe connector to achieve aseptic filling of materials, which not only saves pipeline laying material loss, but also controls the material flow path to be shorter, and can better control the filling accuracy.

[0011] Preferably, the aseptic reversing valve has two chambers and four interfaces, the two chambers include a material valve chamber and a steam valve chamber, and the four interfaces include a steam inlet, a steam outlet, a first interface of the reversing valve and a second interface of the reversing valve.

[0012] The steam inlet and the steam outlet are externally connected to the steam input pipe and the steam output pipe respectively, and are internally connected to the steam valve chamber;

[0013] The first interface of the reversing valve is connected to the valve cavity of the sterile diaphragm valve outwardly and to the material valve cavity inwardly.

[0014] The second interface of the reversing valve is externally connected to the three-way pipe connector and internally connected to the material valve cavity.

[0015] Preferably, the aseptic diaphragm valve has a material distribution cavity and three interfaces, including a feed port, a return port and an external interface.

[0016] The feed inlet and the return port are externally connected to the material input pipe and the return pipe, and internally connected to the material distribution cavity, so as to realize material circulation after being connected to the storage tank through the pipeline loop;

[0017] The external interface is connected to the valve cavity of the aseptic reversing valve externally and is connected to the material distribution cavity internally.

[0018] Preferably, the aseptic single-seat valve comprises a single-seat valve cavity, a first single-seat valve interface and a second single-seat valve interface, and the first single-seat valve interface is connected to the three-way pipe connector.

[0019] Preferably, the three-way pipe connector includes a first interface, a second interface and a third interface.

[0020] The first interface is connected to the sterile reversing valve,

[0021] The third interface is connected to the sterile single-seat valve,

[0022] In the inner cavity of the three-way pipe connector, the opening edge of the second interface is connected to the opening edge of the third interface.

[0023] Preferably, the valve bodies of the sterile reversing valve, the sterile diaphragm valve and the sterile single-seat valve and the three-way pipe connector are configured as an integrally formed structure.

[0024] The utility model improves the strength and sealing performance of the three valve bodies and the three-way pipe connector of the combination valve by integrally forming the three valve bodies and the three-way pipe connector, and is also easy to install and maintain.

[0025] Preferably, the combination valve body includes a bracket, and the valve body of the sterile reversing valve is connected to the valve body of the sterile single-seat valve through the bracket.

[0026] The utility model arranges the bracket on the valve bodies of the sterile reversing valve and the sterile single-seat valve, thereby enhancing the strength of the connection structure between the two, thereby ensuring the safety and reliability of the combination valve when in use.

[0027] Preferably, the bracket is connected to the sterile reversing valve and the sterile single-seat valve by welding.

[0028] Beneficial effects: Due to the adoption of the above technical solution, the utility model constructs an aseptic combination valve structure, which provides a shorter flow path and a better aseptic environment maintenance effect for material filling, flexibly realizes sterilization before filling, maintaining sterility during filling, sterilization and cleaning after filling, reduces the difficulty of operation, streamlines the equipment structure, and has lower requirements for installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A structural diagram of the utility model;

[0030] Figure 2 This is a top view of the utility model;

[0031] Figure 3 A schematic diagram of the valve body structure of the integrated combination valve of the present utility model;

[0032] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure;

[0033] Figure 5 Based on Figure 4 A partial cross-sectional view of

[0034] Figure 6 A schematic diagram of the distribution of welding points of the bracket of the present invention;

[0035] Figure 7 This is a schematic diagram of the valve core of the sterile reversing valve of the utility model in action;

[0036] Figure 8 This is a schematic diagram of the first sterilization step before filling in the present invention;

[0037] Figure 9 This is a schematic diagram of the second sterilization step before filling in the present invention;

[0038] Figure 10 This is a schematic diagram of the utility model during filling;

[0039] Figure 11 This is a schematic diagram of the utility model at the end of filling;

[0040] Figure 12 This is a schematic diagram of the utility model performing sterilization after filling;

[0041] Figure 13 This is a schematic diagram of cleaning after filling in the present invention. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific illustrations. It should be noted that the terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a product or device comprising a series of components or units is not necessarily limited to those components or units clearly listed, but may include other components or components that are not clearly listed or that are inherent to these products or devices.

[0043] The aseptic integrated combination valve of the utility model includes a combination valve body, which has a feed port, a filling port, a return port and a valve cavity. The material enters the valve cavity from the feed port, flows out of the valve cavity from the filling port for filling, and flows back from the return port to the storage tank and other storage structures for re-transportation circulation, waiting for re-filling.

[0044] Reference Figure 1 、 Figure 2 、 Figure 5 The combined valve body includes an aseptic diaphragm valve 100 , an aseptic single-seat valve 200 , an aseptic reversing valve 300 and a three-way pipe connector 400 .

[0045] The aseptic diaphragm valve 100 is connected to the material input pipeline, and the aseptic single-seat valve 200 is connected to the material output pipeline; the aseptic reversing valve 300 is circulated and connected to the steam pipeline, and its valve cavity is connected to the valve cavity of the aseptic single-seat valve 200 through one of its interfaces; the three-way pipe connector 400 is connected to the valve cavity of the aseptic single-seat valve 200 through one of its interfaces and to the valve cavity of the aseptic reversing valve 300 through another interface.

[0046] It should be noted that, during the process of the aseptic diaphragm valve 100 transporting the material backward (flowing through the inner cavity of the aseptic reversing valve 300, the three-way pipe connector 400 and the aseptic single-seat valve 200), the sterile environment of the valve cavity connected to the aseptic reversing valve 300 is maintained by the sterilization effect provided by the high-temperature steam flowing into the aseptic reversing valve 300, thereby ensuring that the subsequent material flow path reaches sterile conditions.

[0047] The sterile reversing valve 300 of the present invention has a steam valve chamber for steam circulation and a material valve chamber for material circulation. High-temperature steam is circulated into the steam valve chamber, and the material valve chamber is controlled by a valve core to open and close the material valve chamber and the steam valve chamber. The valve core also controls the opening and closing of one of its interfaces (here, the interface is the interface connected to the three-way pipe connector). Accordingly, the chambers and interfaces of the sterile reversing valve of the present invention are arranged as follows: In some embodiments, the sterile reversing valve 300 has two chambers and four interfaces. The two chambers include the material valve chamber and the steam valve chamber. The four interfaces include the first interface of the reversing valve, the second interface of the reversing valve, the steam inlet, and the steam outlet.

[0048] The steam inlet and the steam outlet are connected to the steam input pipe and the steam output pipe respectively, and are connected to the steam valve chamber inward;

[0049] The first interface of the reversing valve is connected to the valve cavity of the sterile diaphragm valve 100 outwardly and to the material valve cavity inwardly.

[0050] The second interface of the reversing valve is externally connected to the three-way pipe connector 400 and internally connected to the material valve cavity.

[0051] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 The valve chamber of the sterile reversing valve 300 includes a steam valve chamber 302 and a material valve chamber 301. The four interfaces include a first interface 3001, a second interface 3002, a steam inlet 3003, and a steam outlet 3004. The steam valve chamber 302 is connected to a steam input pipe and a steam output pipe (neither of which is shown in the accompanying drawings) through the steam inlet 3003 and steam outlet 3004, respectively, to allow high-temperature steam to circulate. The first interface 3001 can be connected to the corresponding interface of the sterile diaphragm valve via a clamp connector to allow material to be fed into the material valve chamber 301. The second interface 3002 can also be connected to a three-way pipe connector 400 via a clamp connector to allow material to be discharged from the material valve chamber 301 toward the filling port.

[0052] The first interface 3001 is always connected to the valve cavity of the sterile diaphragm valve 100, that is, it is normally open, but in actual operation, since the interface between the sterile diaphragm valve 100 and the first interface 3001 can be controlled to open and close by the valve core of the sterile diaphragm valve 100, it is equivalent to that the first interface 3001 can also be controlled to open and close (by the valve core of the sterile diaphragm valve).

[0053] As the valve core of the aseptic reversing valve 300 moves within the material valve chamber 301, the valve stem extends to its limit, sealing the second port 3002 and severing its connection to the three-way pipe connector 400. This allows steam sterilization of the reversing valve chamber. When the valve stem retracts to its limit, the material valve chamber 301 and the steam valve chamber 302 are isolated, allowing material transfer. The movement of the valve core and stem corresponds to the different operating conditions of the aseptic reversing valve, fulfilling corresponding functions in pre-filling sterilization, maintaining sterility during filling, and post-filling sterilization and cleaning.

[0054] In order to realize the gas path and material flow of the sterile reversing valve under various working conditions, the utility model can be set as follows: Figure 7 As shown, the valve core of the sterile reversing valve comprises a bottom portion 3061, a middle portion 3062, and a top portion 3063, which are positioned at different locations along the stem 305 from bottom to top. A first spring is positioned between the bottom portion 3061 and the middle portion 3062, and a second spring is positioned between the top portion 3063 and the top of the valve seat. A first hole 3051 and a second hole 3052 are spaced apart from each other on the stem 3055 from top to bottom. The two holes are interconnected (via a passage in the stem). A stopper 3053 and a stopper 3054 are positioned on the outer wall of the stem between the two holes, and the two stoppers are fixed to the stem.

[0055] The middle portion 3062 of the valve core and the top portion 3063 of the valve core can both slide on the valve stem, and the bottom portion 3061 of the valve core is fixed to the bottom end of the valve stem 305 .

[0056] Based on the above structural setting, the sterile reversing valve 300 has the following working states:

[0057] Valve closed state: In this state, the valve stem 305 drops to the limit position (the valve core is at the bottom dead center), achieving valve cavity sterilization;

[0058] In the valve open state, the valve stem 305 is lifted to the limit position (the valve core is at the top dead center) to realize material transportation.

[0059] When the valve is in the closed state, Figure 7As shown in the left side structure of the structure, the bottom 3061 of the valve core blocks the second interface 3002, and the top 3063 of the valve core moves downward under the action of the second spring to isolate the steam valve chamber 302 into an upper chamber 3021 and a lower chamber 3022 (the upper chamber 3021 is connected to the steam inlet 3003, and the lower chamber 3022 is connected to the steam outlet 3004. The inner wall between the two chambers has a raised isolation structure to cooperate with the top of the valve core to achieve isolation of the two chambers); at this time, the first hole 3051 on the valve stem is exposed in the upper chamber 3021, and the second hole 3052 is exposed in the material valve chamber 301 (as shown in the figure). In the structure, it is located within the lower shield structure of the valve core middle portion 3062 (this shield structure is used to mount the spring top). The two holes connect the upper chamber 3021 with the material valve chamber 301, facilitating the passage of high-temperature steam into the material valve chamber 301. Simultaneously, under the downward push of the blocking member 3054, the valve core middle portion 3062 releases its blocked position from the material valve chamber 301 and the steam valve chamber 302, allowing high-temperature steam to flow from the material valve chamber 301 into the lower chamber 3022 of the steam valve chamber 302 and then be discharged through the steam outlet 3004, thereby sterilizing both the steam valve chamber 302 and the material valve chamber 301. The first spring separates the valve core bottom portion 3061 and the valve core middle portion 3062, exposing the second hole 3052 to the material valve chamber 301.

[0060] When the valve is in the open state, Figure 7 As shown in the right side structure of the structure, after the bottom 3061 of the valve core leaves the second interface 3002, it is lifted to the bottom end of the middle part 3062 of the valve core, closing the opening there (including closing the gap of the perforation through which the valve stem passes and the opening structure of the mask), releasing the interface, and allowing the material to flow from the first interface 3001 through the material valve chamber 301 to the second interface 3002; the lifting process of the bottom 3061 of the valve core pushes the middle part 3062 of the valve core upward to the separation between the steam valve chamber 302 and the material valve chamber 301, and cooperates with the separation structure there to achieve isolation of the two chambers; the top 3063 of the valve core is lifted by the blocking member 3053 and leaves the blocking position, thereby connecting the upper chamber 3021 and the lower chamber 3022, allowing high-temperature steam to circulate through the steam valve chamber 302.

[0061] The sterile diaphragm valve 100 of the present invention has a valve cavity, which can be connected to the storage tank to achieve material backflow, and can also open and close a controllable interface to achieve material outflow. The movement of the valve core and valve stem only controls the controllable interface, which connects or cuts off the diaphragm valve cavity with the outside world (here, the outside world includes the material valve cavity of the sterile reversing valve 300 and other external pipelines). Accordingly, the present invention sets the chamber and interface of the sterile diaphragm valve 100 according to the following structure: In some embodiments,

[0062] The aseptic diaphragm valve 100 has a material distribution cavity and three interfaces, including a feed port, a return port, and an external interface. The feed port and the return port are externally connected to the material input pipeline and the return pipeline, and internally connected to the material distribution cavity, so that the material circulation flow can be realized after the pipeline is connected to the storage tank.

[0063] The external interface is connected to the valve cavity of the sterile reversing valve 300 externally and to the material distribution cavity internally.

[0064] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the aseptic diaphragm valve 100 has a material distribution chamber 101 and three interfaces, including a feed port 1001, a return port 1002 and an external interface 1003. The material distribution chamber 101 is cyclically connected to the storage tank through the feed port 1001 and the return port 1002 (the structure and the pipes connected thereto are not shown in the drawings);

[0065] like Figure 3 As shown, the external interface 1003 is connected to the first interface 3001 of the reversing valve (for example, through a clamp joint), thereby achieving communication with the material valve chamber 301 of the sterile reversing valve 300. When the sterile diaphragm valve 100 is working, the valve core and the valve stem move in the material distribution chamber 101. When the valve stem is retracted to the limit, all three interfaces are opened, and the material can be transported backward for filling. In this state, a valve can be set on the return pipe to cut off the process of material returning to the storage tank during filling. Figure 10 The figure shows a state of fluid flow in the cavity during filling. As can be seen from the figure, the return port has been cut off, and the material is fed backward after the feed port and the external interface are connected; when the valve stem is extended to the limit, the valve core is blocked at the external interface 1003, so that the external interface 1003 is closed, thereby isolating the material distribution chamber 101 of the aseptic diaphragm valve 100 and the material valve chamber 301 of the aseptic reversing valve 300 from each other.

[0066] After the utility model is set up according to the above example, when performing filling operations, the aseptic diaphragm valve 100 can open the external interface 1003 to transport materials to the subsequent filling (the aseptic reversing valve 300 and the aseptic single-seat valve 200 need to cooperate to open and close the corresponding interfaces). When filling is not in progress, the material is returned to the storage tank.

[0067] In the present utility model, the design purpose of the aseptic single-seat valve 200 is to utilize its device characteristics to meet the accuracy requirements for flow control during filling, and its chamber and interface can be arranged according to the following structure: In some embodiments, the aseptic single-seat valve 200 has a single-seat valve cavity, a single-seat valve first interface and a single-seat valve second interface, and the single-seat valve first interface is connected to the three-way pipe connector 400.

[0068] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the three-way pipe connector 400 is connected to the first port of the single-seat valve chamber 201 of the sterile single-seat valve 200. The movement of the valve core and valve stem of the sterile single-seat valve 200 also opens and closes this first port. The second port 2002 of the single-seat valve chamber 201 is used for cleaning and sterilization. When cleaning or sterilizing the sterile single-seat valve 200, cleaning fluid and sterilizing steam enter the single-seat valve chamber 201 through this port.

[0069] In the present invention, the provision of the three-way pipe connector 400 allows for more flexible control of the various operating states of the sterile integrated combination valve, meeting the different requirements of the three stages before, during, and after filling. Furthermore, its function is also reflected in: making the connection structure between the sterile reversing valve 300 and the sterile single-seat valve 200 more reasonable, allowing for adjustable clearance between the extension limits of the valve cores and valve stems of both (this refers to the fact that when the valve cores and valve stems of the sterile single-seat valve 200 and the sterile reversing valve 300 are extended to their limits, part of their structure is exposed outside the valve cavity, making them prone to collision in certain operating states). Therefore, the three-way pipe connector 400 can essentially be regarded as an extension or expansion structure of the valve cavity and interface of the sterile single-seat valve 200.

[0070] When the utility model is actually used, Figures 8 to 13 As shown, the placement and installation of the combined valve structure is generally arranged in a position where the reversing valve part is on the top, the single-seat valve part is on the bottom, and the diaphragm valve part is on the side. In this case, due to its external structural characteristics, the three-way pipe connector 400 has the problem of water accumulation and material storage at the connection with the sterile single-seat valve 200. To solve this problem, the following structure can be set: In some embodiments, such as Figure 4 As shown, the three-way pipe connector 400 includes a first interface, a second interface 4002 and a third interface. The first interface is connected to the sterile reversing valve 300, and the third interface is connected to the sterile single-seat valve 200.

[0071] In the inner cavity of the three-way pipe connector 400 , the opening edge of the second interface 4002 is connected to the opening edge of the third interface.

[0072] It should be noted that, in this example, in the inner cavity of the three-way pipe connector 400, the opening edge of the second interface is connected to the opening edge of the third interface, which can be understood as follows:

[0073] The equivalent circle of the opening edge of the second interface is tangent to the plane where the opening edge of the third interface is located.

[0074] The equivalent circle of the opening edge of the third interface is tangent to the plane where the opening edge of the second interface is located.

[0075] After the present invention is set up according to the above example, when the aseptic integrated combination valve is used, the second interface 4002 of the three-way pipe connector 400 is used as the filling port, and the material is output from this port and then filled. The opening of the second interface 4002 (on the inner cavity of the aseptic single-seat valve) is closest to the upper dead point of the valve core of the aseptic single-seat valve 200 (here, the upper dead point of the valve core of the single-seat valve refers to the situation that during the filling process, the valve stem of the single-seat valve is extended to the limit, so that the valve core is located at the first interface of the single-seat valve, and the first interface is closed. The position of the valve core at this time is the upper dead point), and the upper surface of the valve core and the opening (lowest point) of the second interface of the three-way pipe connector 400 on the inner wall of the inner cavity are at the same horizontal height, thereby avoiding the problem of water accumulation and material storage during use after forming a step structure after the height difference between the two, thereby avoiding affecting the flow accuracy control and subsequent sterilization and cleaning.

[0076] From the perspective of ensuring structural strength and installation convenience, the present invention can be arranged in the following structure: in some embodiments, the valve body of the sterile reversing valve 300, the sterile diaphragm valve 100 and the sterile single-seat valve 200 and the three-way pipe connector 400 are arranged as an integrally formed structure.

[0077] The utility model improves the strength and sealing performance of the three valve body parts of the combination valve and the three-way pipe connector 400 by integrally forming the three parts, and is also easy to install and maintain.

[0078] like Figure 3 、 Figure 4 The figure shows an integrated combined valve body structure implemented by the present invention based on the above example, in which the valve cavity of the sterile reversing valve 300, the sterile diaphragm valve 100 and the sterile single-seat valve 200 and the three-way pipe connector 400 are manufactured into an integrated structure, which can eliminate the need to set pipe connectors (such as clamp joints, etc.) at each interface connection position, not only saving materials but also ensuring structural strength and sealing.

[0079] During installation and manufacturing, the actuators corresponding to each valve body are fixed to the valve housing corresponding to the valve cavity of each valve body, so that the telescopic rods of the actuators are connected to the valve stems of each valve body. Figure 1 、 Figure 5 As shown, the actuator 102 of the aseptic diaphragm valve 100 is connected to the valve housing where its material distribution chamber 101 is located, the actuator 202 of the aseptic single-seat valve 200 is connected to the valve housing where its single-seat valve chamber 201 is located, and the actuator 303 of the aseptic reversing valve 300 is connected to the valve housing where its steam valve chamber 302 is located.

[0080] It should be noted that since the steam valve chamber 302 of the sterile reversing valve 300 is always in a sterile state when the sterile integrated combination valve is working (steam is always flowing regardless of whether the valve is closed or not), problems such as sealing can be ignored. Therefore, its corresponding valve shell can be regarded as an external structure, that is, it is installed as an external accessory when installing the actuators corresponding to each valve body. For example, it is integrated into the shell of the actuator structure of the reversing valve as an extension structure of the shell, and then connected to the valve shell corresponding to the material valve chamber of the reversing valve.

[0081] In order to enhance the structural strength of the combination valve, the present invention may be configured as follows: In some embodiments, the combination valve body includes a bracket, and the valve body of the sterile reversing valve 300 is connected to the valve body of the sterile single-seat valve 200 through the bracket.

[0082] The present invention provides a bracket on the valve bodies of the sterile reversing valve 300 and the sterile single-seat valve 200 to enhance the strength of the connection structure between the two, thereby ensuring the safety and reliability of the combination valve when in use.

[0083] Specifically, such as Figures 1 to 4 As shown, a bracket 500 is connected between the valve housing corresponding to the material valve chamber 301 of the sterile reversing valve 300 and the valve housing corresponding to the single-seat valve chamber 201 of the sterile single-seat valve 200 .

[0084] In some preferred embodiments, the bracket 500 is made of 316 stainless steel. Figure 6 As shown, both ends are bent 90 degrees in the same direction, and each end surface has a concave structure so as to fit the connection position on the outer wall of the valve housing.

[0085] In order to further enhance the structural connection, the present invention can set the bracket as follows: In some embodiments, the bracket 500 is connected to the sterile reversing valve 300 and the sterile single-seat valve 200 by welding. The welding structure is set as follows: In some embodiments, both ends of the bracket 500 have arc-shaped depressions to correspond to the arc-shaped outer wall structure of the valve housing of each valve cavity. The cross-sectional structure of the welding position of the arc-shaped depression and the valve housing is an arc curve, and a welding point is provided at both ends and the center of the arc curve. Figure 6 As shown (the diagram structure can be regarded as based on the attached Figure 3 (See the schematic diagram of the structure viewed from right to left, i.e., from the single-seat valve side to the reversing valve side) , one end 501 of the bracket 500 is connected to the valve housing of the single-seat valve cavity 201 of the sterile single-seat valve 200. Three welding points 5001 are provided on the welded joint surface, distributed at both ends and the center of the joint surface.

[0086] An independent clamp structure can be provided at each external connection interface of the utility model to facilitate the connection of external pipelines.

[0087] Attachment Figures 8 to 13 The diagram shows the internal conditions of the valve cavity of the sterile integrated combination valve of the present invention in different working states when in use.

[0088] Figure 8 This illustrates the first step in sterilizing the inner cavity of the combination valve before filling. This process sterilizes the inner cavity and interfaces of the sterile reversing valve. During this process, the valve core and valve stem of the sterile reversing valve close the second interface of the reversing valve, and high-temperature steam fills the first interface of the reversing valve and the material valve chamber 302 of the reversing valve, sterilizing the inner cavity and interfaces of the sterile reversing valve.

[0089] Both the aseptic diaphragm valve and the aseptic single-seat valve close their external interfaces.

[0090] Figure 9 The second step of sterilizing the combination valve's interior before filling is shown. This process maintains a sterile environment within the sterile diaphragm valve, while also sterilizing the interior and interfaces of the sterile single-seat valve and the three-way pipe connector. This process is performed after the first sterilization step. During this time, the sterile diaphragm valve's material distribution chamber 101 circulates material, with material entering through the feed port 1001 and exiting through the return port 1002. The external interface remains closed.

[0091] The valve core and valve stem of the sterile single-seat valve are retracted to the extreme position, so that high-temperature steam is allowed to enter the valve cavity 201 of the single-seat valve. The high-temperature steam flows in from the second interface 2002 of the sterile single-seat valve and then flows out from the second interface 4002 of the three-way pipe connector. During the process, the high-temperature steam fills the valve cavity 201 of the single-seat valve and the inner cavity of the three-way pipe connector 400.

[0092] Figure 10 The figure shows the filling process. During this process, the return channel of the aseptic diaphragm valve is cut off, and the valve core and valve stem open the external interface to allow the material to be transported backwards.

[0093] The valve core and valve stem of the sterile reversing valve open the connection interface between the valve cavity 302 and the three-way pipe connector 400, allowing the material to flow into the inner cavity of the three-way pipe connector 400;

[0094] The single-seat valve chamber 201 of the sterile single-seat valve closes its interface with the three-way pipe connector 400, allowing the material to flow out from the second interface 4002 of the three-way pipe connector for filling.

[0095] Figure 11 The figure shows the situation at the end of filling. At this time, the aseptic single-seat valve remains closed to the outside, and the valve core and valve stem of the aseptic diaphragm valve extend to the limit, closing the interface between its material distribution chamber and the material valve chamber 302 of the aseptic reversing valve, and opening the reflux channel to allow the material to flow back to the storage structure.

[0096] Figure 12The figure shows the situation when sterilization is carried out after filling. During this process, the aseptic diaphragm valve keeps the material circulating in its material distribution chamber and keeps the external interface closed.

[0097] The sterile single-seat valve keeps its connection with the three-way pipe connector closed;

[0098] The sterile reversing valve closes the connection interface between it and the three-way pipe connector, and the material valve cavity 301 is filled with high-temperature steam to sterilize the valve cavity and the interface.

[0099] Figure 13 The diagram shows the cleaning process after filling. During this process, the sterile single-seat valve opens its connection to the three-way pipe connector. Cleaning fluid flows in through the second port 2002 and then through the inner cavities of the sterile single-seat valve and the three-way pipe connector, cleaning the interfaces between the three-way pipe connector, the reversing valve, and the single-seat valve, thus preventing liquid and material accumulation. The cleaning fluid then flows out through the second port 4002 for external discharge.

[0100] To sum up, the utility model constructs an aseptic combination valve through an aseptic reversing valve, an aseptic diaphragm valve, an aseptic single-seat valve and a three-way pipe connector to achieve aseptic filling of materials. It not only saves the loss of pipeline laying materials, but also controls the material flow path to be shorter, and can better control the filling accuracy.

[0101] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. Aseptic integrated combination valve, including a combination valve body, characterized in that: The combination valve body comprises: An aseptic diaphragm valve connected to a material input pipeline; A sterile single-seat valve connected to a material output pipeline; A sterile reversing valve, wherein the sterile reversing valve is circulatedly connected to a steam pipeline, and a valve cavity of the sterile reversing valve is connected to the valve cavity of the sterile single-seat valve through an interface thereof; A three-way pipe connector is connected to the valve cavity of the sterile single-seat valve through one interface and is connected to the valve cavity of the sterile reversing valve through another interface.

2. The aseptic integrated combination valve according to claim 1, characterized in that: The aseptic reversing valve has two chambers and four interfaces. The two chambers include a material valve chamber and a steam valve chamber. The four interfaces include a steam inlet, a steam outlet, a first interface of the reversing valve and a second interface of the reversing valve. The steam inlet and the steam outlet are externally connected to the steam input pipe and the steam output pipe respectively, and are internally connected to the steam valve chamber; The first interface of the reversing valve is connected to the valve cavity of the sterile diaphragm valve outwardly and to the material valve cavity inwardly. The second interface of the reversing valve is externally connected to the three-way pipe connector and internally connected to the material valve cavity.

3. The aseptic integrated combination valve according to claim 1, characterized in that: The aseptic diaphragm valve has a material distribution cavity and three interfaces, including a feed port, a return port and an external interface. The feed port and the return port are externally connected to the material input pipe and the return pipe, and internally connected to the material distribution chamber; The external interface is connected to the valve cavity of the aseptic reversing valve externally and is connected to the material distribution cavity internally.

4. The aseptic integrated combination valve according to claim 1, characterized in that: The aseptic single-seat valve comprises a single-seat valve cavity, a first single-seat valve interface and a second single-seat valve interface, and the first single-seat valve interface is connected to the three-way pipe connector.

5. The aseptic integrated combination valve according to claim 1, characterized in that: The three-way pipe connector includes a first interface, a second interface and a third interface. The first interface is connected to the sterile reversing valve, The third interface is connected to the sterile single-seat valve, In the inner cavity of the three-way pipe connector, the opening edge of the second interface is connected to the opening edge of the third interface.

6. The aseptic integrated combination valve according to any one of claims 1 to 5, characterized in that: The valve bodies of the sterile reversing valve, the sterile diaphragm valve and the sterile single-seat valve and the three-way pipe connector are configured as an integrally formed structure.

7. The aseptic integrated combination valve according to any one of claims 1 to 5, characterized in that: The combination valve body includes a bracket, and the valve body of the sterile reversing valve is connected to the valve body of the sterile single-seat valve through the bracket.

8. The aseptic integrated combination valve according to claim 7, characterized in that: The bracket is connected to the sterile reversing valve and the sterile single-seat valve by welding.

9. The aseptic integrated combination valve according to claim 6, characterized in that: The combination valve body includes a bracket, and the valve body of the sterile reversing valve is connected to the valve body of the sterile single-seat valve through the bracket.

10. The aseptic integrated combination valve according to claim 9, characterized in that: The bracket is connected to the sterile reversing valve and the sterile single-seat valve by welding.

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