Filter, isolator, isolation system and connection structure of replaceable filter

Abstract

The present application provides a filter, an isolator, an isolation system, and a connection structure for a replaceable filter. The filter is for installation to a filter installation interface (11) of an isolator (2), and includes: a filter body (21); a pressure sealing cover plate (23) capable of being installed to a sealing plate (31) of the filter installation interface (11); a connecting rod (24) fixedly connected to the pressure sealing cover plate (23); and an opening / closing control unit (25) connected to the connecting rod (24) and capable of driving the connecting rod (24) to linearly move so that the pressure sealing cover plate (23) and the sealing plate (31) are sealingly installed to the filter installation interface (11) or separated from the filter installation interface (11).

Description

Technical Field

[0001] The present application relates to a filter, an isolator, an isolation system, and a connection structure for a replaceable filter. Background Art

[0002] Isolators (such as those used in the pharmaceutical chemical industry), isolation rooms, and safety workbenches (such as those used for microbial operations or operations involving toxic substances), etc. (in the present application, for the sake of simplicity of description, isolators, isolation rooms, and safety workbenches, etc. are collectively referred to as "isolators") can be provided with filters to form an isolation system, in which the safety and convenience issues during the filter replacement process need to be considered. For example, in the application of a sterile and toxic isolator, the requirements of safe and convenient replacement need to be met. Generally, a BIBO filter (BAG-IN / BAG-OUT filter) that can be safely replaced is arranged in the return air duct design, but the BIBO design mostly uses panel filters, which are large in size and are installed and disassembled inside a PVC bag (or a high-temperature bag), making it inconvenient to replace. During the filter replacement process, if the connection between the filter and the isolator is open, it will bring concerns about the safety during the replacement process. Summary of the Invention

[0003] Aiming at the problems of inconvenient and unsafe filter replacement in the isolation system, the present application provides a filter, an isolator, an isolation system, and a connection structure for a replaceable filter, which can achieve the safety and convenience of filter replacement.

[0004] A filter is provided for installation to a filter installation interface of an isolator, and it includes:

[0005] A filter body;

[0006] A pressure sealing cover plate, the pressure sealing cover plate can be installed to a sealing plate of the filter installation interface; a connecting rod, the connecting rod is fixedly connected to the pressure sealing cover plate; and

[0007] An opening and closing control unit, the opening and closing control unit is connected to the connecting rod and can drive the connecting rod to move linearly so that the pressure sealing cover plate and the sealing plate are hermetically installed to the filter installation interface or separated from the filter installation interface.

[0008] In at least one embodiment, the pressure sealing cover plate includes a cover plate rotation bayonet, and the cover plate rotation bayonet can be rotationally clamped to a sealing plate rotation bayonet of a sealing plate that can be hermetically installed to the filter installation interface.

[0009] In at least one embodiment, the filter body has a body rotation bayonet,

[0010] When rotating the filter body, the body rotation bayonet and the cover plate rotation bayonet rotate synchronously, so that the body rotation bayonet is rotationally clamped to the interface rotation bayonet of the filter installation interface and the cover plate rotation bayonet is rotationally clamped to the seal plate rotation bayonet, or the clamping between the body rotation bayonet and the interface rotation bayonet and the clamping between the cover plate rotation bayonet and the seal plate rotation bayonet are both released.

[0011] In at least one embodiment, the filter includes a support structure disposed inside the filter body and fixedly connected to the filter body.

[0012] The connecting rod passes through the support structure.

[0013] The contact part between the support structure and the connecting rod is non-circular, and the corresponding contact part of the connecting rod is also non-circular, so that the connecting rod cannot rotate relative to the filter body.

[0014] In at least one embodiment, the filter further includes a gasket, and the gasket is fixed to the filter body.

[0015] When the filter is installed in the isolator, a part of the gasket is clamped between the body rotation bayonet and the filter installation interface, and another part of the gasket can be pressed against the filter body by the pressure sealing cover plate.

[0016] In at least one embodiment, the pressure sealing cover plate and / or the seal plate includes a sealing member, and when the pressure sealing cover plate is rotationally clamped to the seal plate, the sealing member seals the gap therebetween.

[0017] In at least one embodiment, the opening and closing control unit includes an air cavity, an air pipe and an air pipe joint. The free end of the connecting rod is disposed in the air cavity, and the air cavity is connected to the air pipe through the air pipe joint.

[0018] In at least one embodiment, a spring or inert compressed gas is provided between the free end of the connecting rod and the top of the air cavity.

[0019] In at least one embodiment, the air pipe joint includes a self-sealing air pipe joint.

[0020] In at least one embodiment, the opening and closing control unit includes a hydraulic cylinder, a pneumatic cylinder or an electric cylinder. A piston is formed or installed at the free end of the connecting rod, and the connecting rod serves as a piston rod.

[0021] In at least one embodiment, the opening and closing control unit includes a motor, and the motor can drive the connecting rod to move linearly.

[0022] In at least one embodiment, the filter further includes the sealing plate.

[0023] There is provided an isolator including a filter mounting interface for mounting a filter,

[0024] The filter mounting interface includes a limiting device that can fix the sealing plate to the filter mounting interface.

[0025] In at least one embodiment, the filter mounting interface further includes an interface rotary bayonet that can be rotationally engaged with a body rotary bayonet of a filter body of the filter.

[0026] In at least one embodiment, the limiting device includes one of the following devices:

[0027] A. An inflatable sealing ring that can be inflated and expanded to fixedly seal the sealing plate to the filter mounting interface and deflated and contracted to allow the sealing plate to leave the filter mounting interface; and

[0028] B. A liquid-filled sealing ring that can be filled with liquid and expanded to fixedly seal the sealing plate to the filter mounting interface and drained of liquid and contracted to allow the sealing plate to leave the filter mounting interface.

[0029] In at least one embodiment, the isolator includes a protection device disposed at a connection between the filter and the isolator,

[0030] The protection device includes one or more channels for sucking gas or liquid from the filter mounting interface and / or blowing gas or introducing liquid into the filter mounting interface.

[0031] In at least one embodiment, the isolator includes the sealing plate.

[0032] In at least one embodiment, the sealing plate includes a sealing plate rotary bayonet that can be rotationally engaged with a cover rotary bayonet of a pressure sealing cover plate of the filter.

[0033] There is provided an isolation system including:

[0034] A filter according to the present application;

[0035] An isolator according to the present application; and

[0036] A sealing plate that can be connected to the pressure sealing cover plate.

[0037] In at least one embodiment, the sealing plate includes a sealing plate rotary bayonet, and the pressure sealing cover plate includes a cover plate rotary bayonet. The sealing plate and the pressure sealing cover plate can be rotationally clamped through the sealing plate rotary bayonet and the cover plate rotary bayonet.

[0038] A connection structure for a replaceable filter is provided for connecting a filter and an isolator.

[0039] The connection structure includes a sealing plate.

[0040] When the filter is in a non-operating state, the sealing plate can be fixed to the filter mounting interface of the isolator, thereby preventing the material in the isolator from overflowing through the filter mounting interface.

[0041] When the filter is in an operating state, the sealing plate can be fixed to the filter, thereby leaving the filter mounting interface and enabling the filter to communicate with the isolator.

[0042] In at least one embodiment, the filter includes:

[0043] A filter body;

[0044] A pressure sealing cover plate, when the filter is in an operating state, the sealing plate is fixedly connected to the pressure sealing cover plate;

[0045] A connecting rod, the connecting rod is fixedly connected to the pressure sealing cover plate; and

[0046] An opening and closing control unit, the opening and closing control unit is connected to the connecting rod and can drive the connecting rod to move linearly so that the pressure sealing cover plate and the sealing plate are sealingly installed on the filter mounting interface or leave the filter mounting interface.

[0047] In at least one embodiment, the filter further includes a sealing gasket, the sealing gasket is fixed to the filter body.

[0048] When the filter is connected to the isolator, a part of the sealing gasket is clamped between the body rotary bayonet of the filter body and the filter mounting interface, and another part of the sealing gasket can be pressed against the filter body by the pressure sealing cover plate.

[0049] In at least one embodiment, the pressure sealing cover plate and / or the sealing plate includes a sealing member. When the pressure sealing cover plate is rotationally clamped to the sealing plate, the sealing member seals the gap therebetween.

[0050] In at least one embodiment, the sealing plate has a sealing plate rotary bayonet, and the pressure sealing cover plate has a cover plate rotary bayonet that can be rotatably engaged with the sealing plate rotary bayonet.

[0051] In at least one embodiment, the connection structure includes a support structure disposed inside the filter body and fixedly connected to the filter body,

[0052] The connecting rod passes through the support structure,

[0053] The contact portion between the support structure and the connecting rod is non-circular, and the corresponding contact portion of the connecting rod is also non-circular, so that the connecting rod cannot rotate relative to the filter body.

[0054] In at least one embodiment, a limiting device is provided at the filter mounting interface,

[0055] When the filter is in a non-operating state, the limiting device can fix the sealing plate to the filter mounting interface.

[0056] In at least one embodiment, the limiting device includes one of the following devices:

[0057] A. An inflatable sealing ring that can be inflated and expanded to fixedly seal the sealing plate to the filter mounting interface and deflated and contracted to allow the sealing plate to leave the filter mounting interface; and

[0058] B. A liquid-filled sealing ring that can be filled with liquid and expanded to fixedly seal the sealing plate to the filter mounting interface and drained and contracted to allow the sealing plate to leave the filter mounting interface.

[0059] In at least one embodiment, the filter includes a filter body having a body rotary bayonet, and the filter mounting interface includes an interface rotary bayonet that can be rotatably engaged with the body rotary bayonet.

[0060] In at least one embodiment, the connection structure includes a protection device disposed at the connection between the filter and the isolator,

[0061] The protection device includes one or more channels for sucking gas or liquid from the filter mounting interface and / or blowing gas or introducing liquid into the filter mounting interface.

[0062] By adopting the above technical solution, the present application provides a filter, an isolator, an isolation system, and a connection structure for a replaceable filter. The above technical solution realizes the safety and convenience of the filter replacement process by utilizing the different positions of the sealing plate in different working states and the rotational snap connection between the filter and the isolator. Description of the Drawings

[0063] Figure 1 The cross-sectional views show two filters in the closed and open configurations respectively according to an embodiment of the present application.

[0064] Figure 2 The schematic structural view shows the filter in the closed configuration according to an embodiment of the present application.

[0065] Figure 3 The schematic structural view shows the filter in the open configuration according to an embodiment of the present application.

[0066] Figure 4 The schematic structural view shows the filter connected to the filter mounting interface and the filter mounting interface not being sealed by the sealing plate according to an embodiment of the present application.

[0067] Figure 5 The schematic structural view shows the filter connected to the filter mounting interface and the filter mounting interface being sealed by the sealing plate according to an embodiment of the present application.

[0068] Figure 6 Shows Figure 4 The front view of the filter mounting interface not being sealed by the sealing plate in

[0069] Figure 7 Shows Figure 5 The front view of the filter mounting interface being sealed by the sealing plate in

[0070] Figure 8 The cross-sectional view shows the filter in the closed configuration according to an embodiment of the present application.

[0071] Figure 9 Shows Figure 8 The front view of the filter in

[0072] Description of the Reference Numerals

[0073] 1 Filter; 2 Isolator;

[0074] 11 Filter mounting interface;

[0075] 21 Filter body; 22 Gasket; 23 Pressurized sealing cover plate; 24 Connecting rod; 25 Opening and closing control unit; 16 Body rotation bayonet; 26 Interface rotation bayonet; 17 Cover plate rotation bayonet; 27 Sealing plate rotation bayonet; 30 Contact part; 32 Support structure;

[0076] 31 Sealing plate;

[0077] 41 Limiting device;

[0078] 51 Protection device. Detailed implementation manner

[0079] The exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not used to exhaust all feasible ways of the present application, nor to limit the scope of the present application.

[0080] For the overall and further description, the following regulations apply. If reference numerals are included in the drawings for the purpose of graphical clarity, but are not described in the directly associated description text, please refer to the content in the previous drawing description that mentions the reference numeral.

[0081] Refer to Figures 1 to 7 , the present application provides a filter, an isolator, an isolation system, and a connection structure for a replaceable filter. Among them, the connection structure is used for connecting the filter 1 and the isolator 2. The connection structure includes a sealing plate 31. When the filter 1 is in a non-operating state, the sealing plate 31 (to be described below) can be fixed to the filter installation interface 11 of the isolator 2, thereby preventing the material in the isolator 2 from overflowing through the filter installation interface 11. When the filter is in an operating state, the sealing plate 31 can be fixed to the filter 1, thereby leaving the filter installation interface 11 and enabling the filter 1 to communicate with the isolator 2.

[0082] Among them, the non-operating state of the filter 1 means that the filter 1 is not connected to the isolator 2 or the filter 1 is connected to the isolator 2, but the lid of the filter 1 itself (for example, the pressurized sealing cover plate 23 described later) is not opened (as Figure 1 , 2 , shown in 5). The operating state of the filter 1 means that the filter 1 is already connected to the isolator 2, and the lid of the filter 1 is opened, and the filter plays a role of filtering and adsorption (as Figure 1 shown). The material in the isolator 2 can include gas, liquid, particles, etc.

[0083] Exemplarily, as Figure 8 , 9As shown, the filter 1 may include a filter body 21, a gasket 22, a sealing member, a pressure sealing cover plate 23, a connecting rod 24, an opening and closing control unit 25, and a support structure 32.

[0084] Exemplarily, as Figure 1 shown, the isolator 2 may include a filter installation interface 11 (such as Figure 4 , 6 shown), a limit device 41, and a protection device 51.

[0085] The lower part of the sealing plate 31 has a sealing plate rotating bayonet 27, which can be rotatably clamped with the pressure sealing cover plate 23 and can also be hermetically fixed to the limit device 41 located at the filter installation interface 11 through the side wall. As Figure 1 shown, when the filter 1 is in a non-operating state, the sealing plate 31 can be fixed to the filter installation interface 11 of the isolator 2 through the limit device 41; when the filter 1 is in an operating state, the sealing plate 31 can be fixed to the pressure sealing cover plate 23 of the filter 1.

[0086] The filter body 21 has a body rotating bayonet 16 that can be rotatably clamped with the interface rotating bayonet 26 of the filter installation interface 11 (such as Figure 2 , 5 , 7 shown). When rotating the filter body 21, the body rotating bayonet 16 is rotatably clamped with the interface rotating bayonet 26 of the filter installation interface 11; or the clamping between the body rotating bayonet 16 and the interface rotating bayonet 26 is released.

[0087] Specifically, for example, during the installation process, the protrusion of the body rotating bayonet 16 of the filter body 21 corresponds to the groove of the interface rotating bayonet 26 of the filter installation interface 11, and the filter 1 is inserted. Rotate the filter body 21 so that the protrusion of the body rotating bayonet 16 of the filter body 21 corresponds to the protrusion of the interface rotating bayonet 26 of the filter installation interface 11, so that the filter 1 and the isolator 2 are tightly connected (it can be understood that the operations of inserting and rotating the filter 1 can be completed manually or using a robotic arm, and there is no limitation here).

[0088] The gasket 22 may be provided on the filter body 21 (such as Figure 8 shown). When the filter 1 is installed in the isolator 2, a part of the gasket 22 can be clamped between the body rotating bayonet 16 and the filter installation interface 11. When the filter 1 is closed by itself, another part of the gasket 22 can be pressed by the pressure sealing cover plate 23 against the filter body 21. It can be understood that the "one part, another part" where the gasket 22 is clamped (pressed) refers to two parts of the gasket 22, rather than representing that the sum of the two parts is the whole of the gasket 22.

[0089] A sealing member can be disposed on the top surface of the pressure sealing cover plate 23. Specifically, a rubber pad, an O-ring, a rubber coating, etc. can be used. When the pressure sealing cover plate 23 is rotationally clamped to the sealing plate 31, the sealing member can seal the gap therebetween.

[0090] Optionally or additionally, the sealing member can also be disposed on the lower surface of the sealing plate 31 (the surface facing the pressure sealing cover plate 23).

[0091] The pressure sealing cover plate 23 can be fixed to one end (the fixed end, as Figure 8 shown) of the connecting rod 24, and the other end (the free end) of the connecting rod 24 is connected to the opening and closing control unit 25. The opening and closing control unit 25 controls the movement of the connecting rod 24 by pushing and pulling, for example, so as to control the opening and closing of the pressure sealing cover plate 23 of the filter 1. The pressure sealing cover plate 23 has a cover plate rotation bayonet 17 that can rotationally engage with the sealing plate rotation bayonet 27 of the sealing plate 31 (as Figure 2 、 5 shown). When the filter body 21 is rotated, the pressure sealing cover plate 23 rotates synchronously, and the cover plate rotation bayonet 17 rotationally engages with the sealing plate rotation bayonet 27 of the sealing plate 31; or the engagement between the cover plate rotation bayonet 17 and the sealing plate rotation bayonet 27 is released.

[0092] [[ID=?]]Specifically, for example, during the installation process, the protrusion of the cover plate rotation bayonet 17 of the pressure sealing cover plate 23 corresponds to the groove of the sealing plate rotation bayonet 27 of the sealing plate 31, and the pressure sealing cover plate 23 is inserted. By rotating the filter body 21, the protrusion of the cover plate rotation bayonet 17 of the pressure sealing cover plate 23 corresponds to the protrusion of the sealing plate rotation bayonet 27 of the sealing plate 31, so that the pressure sealing cover plate 23 and the sealing plate 31 are tightly connected.

[0093] As Figure 1 shown, in order to ensure the smooth conversion of the working state of the filter 1, preferably, when the filter body 21 is rotated, the filter body 21 and the pressure sealing cover plate 23 rotate synchronously, so that the body rotation bayonet 16 of the filter body 21 and the interface rotation bayonet 26 of the filter installation interface 11, and the cover plate rotation bayonet 17 of the pressure sealing cover plate 23 and the sealing plate rotation bayonet 27 of the sealing plate 31 can be rotationally clamped or rotationally loosened simultaneously. This simplifies the conversion steps of the working state of the filter 1.

[0094] The support structure 32 (as Figure 3 、 8 It should be noted that there seems to be a numbering issue in the original text where the numbering jumps from 12 to 13 without an intermediate 12.5 or something similar. Also, the translation of the part marked with "?" might need further clarification as the reference numbers seem a bit off in the original description. But this translation adheres to the given rules as much as possible.As shown, it can be arranged inside the filter body 21 and fixedly connected to the filter body 21. The support structure 32 can include a plurality of support arms with one end connected to the filter body 21 and the other ends connected together. The other ends of the support structure 32 can be connected together via a ring member. The connecting rod 24 can be arranged through the ring member of the support structure 32. The connecting rod 24 can be connected to the filter body 21 through the support structure 32. The contact part 30 (including the inner circumferential surface of the ring member) between the connecting rod 24 and the support structure 32 can be non-circular, so that the connecting rod 24 and the pressure sealing cover plate 23 do not rotate relative to the filter body 21.

[0095] Exemplarily, in the opening and closing control unit 25 shown in, for example Figure 8 the opening and closing control unit 25 includes an air cavity, an air pipe and an air pipe joint. The free end of the connecting rod 24 is arranged inside the air cavity, and the air cavity is connected to the air pipe through the air pipe joint.

[0096] A piston is formed or installed at the free end of the connecting rod 24. The cavity on one side of the free end (such as Figure 8 as shown, the bottom of the air cavity) can introduce gas into the air cavity through the air pipe and the air pipe joint to drive the connecting rod 24. On the other side of the free end of the connecting rod 24 (such as Figure 8 as shown, the top of the air cavity) spring, nitrogen and other inert compressed gases can be arranged for the return of the connecting rod 24.

[0097] It can be understood that when it is necessary to open the pressure sealing cover plate 23, the air cavity is inflated through the air pipe joint. After the air cavity is inflated on one side (the bottom of the air cavity), the connecting rod 24 is pushed, so as to open the pressure sealing cover plate 23. Similarly, when it is necessary to close the pressure sealing cover plate 23, the air cavity is exhausted through the air pipe joint, and the spring or nitrogen and other inert compressed gases on the other side (the top of the air cavity) of the air cavity push the end of the connecting rod 24, so as to pull and close the pressure sealing cover plate 23, thereby realizing the closing of the filter 1.

[0098] Preferably, the air pipe joint can be a self-sealing air pipe joint. After the air cavity is inflated, the interface of the inflation device is pulled out, and the gas in the air cavity is sealed by the self-sealing air pipe joint and will not leak through the air pipe joint.

[0099] It can be understood that the opening and closing control unit 25 can include a hydraulic cylinder, a pneumatic cylinder or an electric cylinder. A piston can be formed or installed at the free end of the connecting rod 24. The connecting rod 24 is used as a piston rod and cooperates with the opening and closing control unit 25 to realize the movement of the connecting rod 24, thereby realizing the opening and closing of the filter 1.

[0100] It can be understood that the opening and closing control unit 25 can include a motor, and the motor is used to drive the connecting rod 24, thereby realizing the opening and closing of the filter 1.

[0101] The filter installation interface 11 may include an interface rotary bayonet 26 and a limiting device 41. The interface rotary bayonet 26 can be rotatably clamped with the body rotary bayonet 16 of the filter body 21 of the filter 1, and the limiting device 41 can fix the sealing plate 31 to the filter installation interface 11.

[0102] The limiting device 41 may be disposed on the filter installation interface 11 (as Figure 1 shown), and when the filter 1 is in a non-operating state, it is used to fix the sealing plate 31 to the isolator 2 (as Figure 5 shown). The limiting device 41 may include one of the following devices.

[0103] A. An inflatable sealing ring; and

[0104] B. A liquid-filled sealing ring.

[0105] Specifically, Figure 1 the shown limiting device 41 may include an inflatable sealing ring, and the inflatable sealing ring is fixed to the filter installation interface 11. When the filter 1 is in a non-operating state, the inflatable sealing ring is in an inflated and fixed state (the inflatable sealing ring is inflated), and it can fix the sealing plate 31 inside the inflatable sealing ring, thereby making the isolator 2 airtight. When the filter 1 is in an operating state, the inflatable sealing ring is in a deflated state, and the sealing plate 31 can move, so that the toxic gases and particles in the isolator 2 can enter the filter 1 and be filtered and absorbed by the filter 1.

[0106] It can be understood that the inflatable sealing ring can be made of an elastic material, so that it can be pressurized and expanded to press the sealing plate 31. At this time, the limiting device 41 simultaneously plays the roles of sealing and limiting. The inflatable sealing ring has a simple structure, convenient operation and low cost.

[0107] It can be understood that the same effect can be achieved by replacing the inflatable sealing ring with a liquid-filled sealing ring.

[0108] The protection device 51 is disposed at the connection between the filter 1 and the isolator 2, that is, the filter installation interface 11. The protection device 51 may include one or more channels for sucking gas from the filter installation interface 11, or blowing gas or introducing liquid into the filter installation interface 11.

[0109] Specifically, as Figure 1The shown protection device 51 has, for each filter installation interface 11, two pipes provided on the filter installation interface 11, with one end of the pipes opening towards the inner peripheral surface of the filter installation interface 11 (the gap between the sealing plate 31, the pressure sealing cover plate 23 and the filter installation interface 11). Clean air is filled through one pipe, and air is discharged through the other pipe, so as to displace the toxic gases that may exist at the filter installation interface 11. It is ensured that the possible dirty air and particles in the gap space will not affect the internal environment of the isolator 2, and the toxic gases or particles in the isolator 2 will not scatter into the outside air through the gap. Of course, the gas that is drawn away needs to be specially treated.

[0110] It can be understood that the protection device 51 can only pump air. The protection device 51 can be mainly used during the disassembly and installation process of the filter 1. After the filter 1 is connected to the isolator 2, the protection device 51 can be shut down.

[0111] The isolation system of the present application may include the above-mentioned filter 1, isolator 2 and sealing plate 31. It can be understood that the sealing plate 31 can belong to the filter 1, or can belong to the isolator 2, or even can be juxtaposed with the isolator 2 and the filter 1, and the three constitute the isolation system.

[0112] Next, the installation and disassembly process of the filter 1 will be described as a whole with reference to the embodiments disclosed in the drawings of the present application.

[0113] Installation process of the filter 1:

[0114] The protection device 51 sucks air at the gap;

[0115] By hand or robotic arm, the protrusion of the body rotation bayonet 16 of the filter body 21 is made to correspond to the groove of the interface rotation bayonet 26 of the filter installation interface 11, and the protrusion of the cover rotation bayonet 17 of the pressure sealing cover plate 23 is made to correspond to the groove of the sealing plate rotation bayonet 27 of the sealing plate 31, and the filter 1 is inserted into the isolator 2;

[0116] The filter body 21 is rotated so that the protrusion of the body rotation bayonet 16 of the filter body 21 corresponds to the protrusion of the interface rotation bayonet 26 of the filter installation interface 11, and the protrusion of the cover rotation bayonet 17 of the pressure sealing cover plate 23 corresponds to the protrusion of the sealing plate rotation bayonet 27 of the sealing plate 31, so that the filter 1 and the isolator 2 are tightly connected, and the pressure sealing cover plate 23 and the sealing plate 31 are tightly connected;

[0117] The inflatable sealing ring of the limiting device 41 deflates, the air pipe joint of the opening and closing control unit 25 is inflated, and the opening and closing control unit 25 pushes the connecting rod 24, the pressure sealing cover plate 23 and the sealing plate 31 together towards the isolator 2, the inside of the filter body 21 communicates with the inside of the isolator 2, and the filtering function of the filter 1 is enabled;

[0118] After the filter 1 and the isolator 2 are connected, the protection device 51 can be stopped from working.

[0119] Disassembly process of the filter 1:

[0120] The protection device 51 performs air replacement or air extraction on the gap.

[0121] The air pipe joint of the opening and closing control unit 25 exhausts air. Under the action of the spring of the opening and closing control unit 25, the connecting rod 24, the pressure sealing cover plate 23, and the sealing plate 31 extend towards the filter 1 (in the direction opposite to the isolator 2) together, and the gasket 22 is tightly pressed against the pressure sealing cover plate 23 for sealing.

[0122] The inflatable sealing ring of the limit device 41 is inflated to fix the sealing plate 31 to the filter installation interface 11. At this time, the filter 1 is in a non - working state; it can be understood that the protection device 51 can start air replacement or air extraction on the gap at this time or a little earlier.

[0123] Rotate the filter body 21 so that the protrusion of the body rotation bayonet 16 of the filter body 21 corresponds to the groove of the interface rotation bayonet 26 of the filter installation interface 11, and make the protrusion of the cover rotation bayonet 17 of the pressure sealing cover plate 23 correspond to the groove of the sealing plate rotation bayonet 27 of the sealing plate 31, and then pull out the filter body 21, and the filter body 21 is disengaged from the filter installation interface 11.

[0124] At this time, the protection device 51 can stop working and the disassembly is completed.

[0125] It can be understood that multiple filters 1 can be installed on a single isolator 2 (as Figure 1 shown).

[0126] This application has at least one of the following advantages:

[0127] (Ⅰ) The sealing plate 31 is in different positions in different working states of the filter. The filter and the isolator are clamped through rotation bayonets, realizing the safety and convenience of the filter replacement process.

[0128] (Ⅱ) During the installation and disassembly processes, the protection device performs suction replacement or water washing on the gap between the filter and the isolator, ensuring that the possible dirty air and particles in the gap space will not affect the internal environment of the isolator, and the toxic gases and particles in the isolator 2 will not be scattered into the external air through the gap.

[0129] Of course, this application is not limited to the above - mentioned embodiments. Those skilled in the art can make various modifications to the above - mentioned embodiments of this application under the teaching of this application without departing from the scope of this application.

Claims

1. A filter, characterized in that, A filter installation interface (11) for installation onto an isolator (2), the filter (1) comprising: A filter body (21); A pressure sealing cover plate (23) capable of being installed onto a sealing plate (31) of the filter installation interface (11); A connecting rod (24) fixedly connected to the pressure sealing cover plate (23); and An opening and closing control unit (25) connected to the connecting rod (24), the opening and closing control unit (25) controlling the opening and closing of the pressure sealing cover plate (23) of the filter (1) by controlling the movement of the connecting rod (24), thereby controlling the opening and closing of the filter (1). The opening and closing control unit (25) can drive the connecting rod (24) to move linearly so that the pressure sealing cover plate (23) and the sealing plate (31) are sealingly installed onto the filter installation interface (11) or separated from the filter installation interface (11). In a state where the pressure sealing cover plate (23) and the sealing plate (31) are separated from the filter installation interface (11), the interior of the filter (1) communicates with the interior of the isolator (2) via the filter installation interface (11). The pressure sealing cover plate (23) includes a cover plate rotary bayonet (17) capable of rotatably engaging with a sealing plate rotary bayonet (27) of a sealing plate that can be sealingly installed onto the filter installation interface (11). The cover plate rotary bayonet (17) includes a protrusion. When the protrusion of the cover plate rotary bayonet (17) corresponds to a groove of the sealing plate rotary bayonet (27), the sealing plate (31) can be inserted into the pressure sealing cover plate (23). By rotating the filter body (21), when the protrusion of the cover plate rotary bayonet (17) corresponds to the protrusion of the sealing plate rotary bayonet (27), the pressure sealing cover plate (23) can be tightly connected to the sealing plate (31). The filter body (21) has a body rotary bayonet (16). When the filter body (21) is rotated, the body rotary bayonet (16) and the cover plate rotary bayonet (17) rotate synchronously, so that the body rotary bayonet (16) rotatably engages with an interface rotary bayonet (26) of the filter installation interface (11) and the cover plate rotary bayonet (17) rotatably engages with the sealing plate rotary bayonet (27), or the engagement between the body rotary bayonet (16) and the interface rotary bayonet (26) and the engagement between the cover plate rotary bayonet (17) and the sealing plate rotary bayonet (27) are both released.

2. The filter according to claim 1, wherein The filter (1) includes a support structure (32) disposed inside the filter body (21) and fixedly connected to the filter body (21). The connecting rod (24) passes through the support structure (32). The contact part (30) of the support structure (32) and the connecting rod (24) is non-circular, and the corresponding contact part of the connecting rod (24) is also non-circular, so that the connecting rod (24) cannot rotate relative to the filter body (21).

3. The filter according to claim 1, characterized in that, The filter (1) further includes a gasket (22), and the gasket (22) is fixed to the filter body (21). When the filter (1) is installed in the isolator (2), a part of the gasket (22) is clamped between the body rotary bayonet (16) and the filter mounting interface (11), and another part of the gasket (22) can be pressed against the filter body (21) by the pressure sealing cover plate (23).

4. The filter according to claim 1, wherein The pressure sealing cover plate (23) and / or the sealing plate (31) includes a sealing member, and when the pressure sealing cover plate (23) is rotationally clamped to the sealing plate (31), the sealing member seals the gap therebetween.

5. The filter according to claim 1, characterized in that, The opening and closing control unit (25) includes an air cavity, an air pipe and an air pipe joint. The free end of the connecting rod (24) is arranged in the air cavity, and the air cavity is connected to the air pipe through the air pipe joint.

6. The filter according to claim 5, characterized in that A spring or inert compressed gas is provided between the free end of the connecting rod (24) and the top of the air cavity.

7. The filter according to claim 5, characterized in that, The air pipe joint includes a self-sealing air pipe joint.

8. The filter according to claim 1, characterized in that, The opening and closing control unit (25) includes a hydraulic cylinder, a pneumatic cylinder or an electric cylinder. A piston is formed or installed at the free end of the connecting rod (24), and the connecting rod (24) serves as a piston rod.

9. The filter according to claim 1, characterized in that, The opening and closing control unit (25) includes a motor, and the motor can drive the connecting rod (24) to move linearly.

10. The filter according to any one of claims 1 to 9, characterized in that, The filter further includes the sealing plate (31).

11. An isolator, characterized in that, Including the filter (1) according to any one of claims 1 to 9 and a filter mounting interface (11) for mounting the filter (1). The filter mounting interface (11) includes a limiting device (41), and the limiting device (41) can fix the sealing plate (31) to the filter mounting interface (11).

12. The isolator according to claim 11, characterized in that, The filter mounting interface (11) further includes an interface rotary bayonet (26), and the interface rotary bayonet (26) can be rotationally clamped with the body rotary bayonet (16) of the filter body (21) of the filter (1).

13. The isolator according to claim 11, wherein, The limiting device (41) includes one of the following devices: A. An inflatable sealing ring, which can be inflated and expanded to fixedly seal the sealing plate (31) to the filter mounting interface (11) and deflated and contracted to allow the sealing plate (31) to leave the filter mounting interface (11); and B. A liquid-filled sealing ring, which can be filled with liquid and expanded to fixedly seal the sealing plate (31) to the filter mounting interface (11) and drained and contracted to allow the sealing plate (31) to leave the filter mounting interface (11).

14. The isolator according to claim 11, characterized in that The isolator includes a protection device (51), and the protection device (51) is arranged at the connection between the filter (1) and the isolator (2). The protection device (51) includes one or more channels for sucking gas or liquid from or blowing gas or introducing liquid into the filter mounting interface (11).

15. The isolator according to claim 11, characterized in that, The isolator includes the sealing plate (31).

16. The isolator according to claim 15, characterized in that, The sealing plate (31) includes a sealing plate rotary bayonet (27), and the sealing plate rotary bayonet (27) can be rotatably engaged with the cover rotary bayonet (17) of the pressure sealing cover plate (23) of the filter (1).

17. An isolation system, characterized in that, Comprising: The isolator (2) according to any one of claims 11 to 14; and A sealing plate (31) capable of being connected to the pressure sealing cover plate (23).

18. The isolation system according to claim 17, wherein The sealing plate (31) includes a sealing plate rotary bayonet (27), the pressure sealing cover plate (23) includes a cover rotary bayonet (17), and the sealing plate (31) and the pressure sealing cover plate (23) can be rotatably engaged through the sealing plate rotary bayonet (27) and the cover rotary bayonet (17).

19. A connection structure for a replaceable filter for connecting a filter (1) and an isolator (2), characterized in that The connection structure includes a sealing plate (31). When the filter (1) is in a non-operating state, the sealing plate (31) can be fixed to the filter mounting interface (11) of the isolator (2), thereby preventing the material in the isolator (2) from overflowing through the filter mounting interface (11). When the filter (1) is in an operating state, the sealing plate (31) can be fixed to the filter (1), thereby leaving the filter mounting interface (11) to connect the filter (1) and the isolator (2). The filter (1) includes: A filter body (21). A pressure sealing cover plate (23), when the filter (1) is in an operating state, the sealing plate (31) is fixedly connected to the pressure sealing cover plate (23). A connecting rod (24) fixedly connected to the pressure sealing cover plate (23); and An opening and closing control unit (25) connected to the connecting rod (24), the opening and closing control unit (25) controls the opening and closing of the pressure sealing cover plate (23) of the filter (1) by controlling the movement of the connecting rod (24), and further controls the opening and closing of the filter (1). The opening and closing control unit (25) can drive the connecting rod (24) to move linearly to seal and install the pressure sealing cover plate (23) and the sealing plate (31) on the filter mounting interface (11) or leave the filter mounting interface (11). The sealing plate (31) has a sealing plate rotary bayonet (27), and the pressure sealing cover plate (23) has a cover plate rotary bayonet (17) that can be rotationally engaged with the sealing plate rotary bayonet (27). The cover plate rotary bayonet (17) includes a protrusion. When the protrusion of the cover plate rotary bayonet (17) corresponds to the groove of the sealing plate rotary bayonet (27), the sealing plate (31) can be inserted into the pressure sealing cover plate (23). Rotating the filter body (21) so that the protrusion of the cover plate rotary bayonet (17) corresponds to the protrusion of the sealing plate rotary bayonet (27), the pressure sealing cover plate (23) can be tightly connected to the sealing plate (31). The filter (1) includes a filter body (21), and the filter body (21) has a body rotary bayonet (16). The filter mounting interface (11) includes an interface rotary bayonet (26) that can be rotationally engaged with the body rotary bayonet (16).

20. The connection structure according to claim 19, characterized in that, The filter (1) further includes a gasket (22), and the gasket (22) is fixed to the filter body (21). When the filter (1) is connected to the isolator (2), a part of the gasket (22) is clamped between the body rotary bayonet (16) of the filter body (21) and the filter mounting interface (11), and another part of the gasket (22) can be pressed by the pressure sealing cover plate (23) against the filter body (21).

21. The connection structure according to claim 19, wherein The pressure sealing cover plate (23) and / or the sealing plate (31) includes a sealing member. When the pressure sealing cover plate (23) is rotationally engaged with the sealing plate (31), the sealing member seals the gap therebetween.

22. The connection structure according to claim 19, characterized in that The connection structure includes a support structure (32) disposed inside the filter body (21) and fixedly connected to the filter body (21). The connecting rod (24) passes through the support structure (32). The contact portion (30) between the support structure (32) and the connecting rod (24) is non-circular, and the corresponding contact portion of the connecting rod (24) is also non-circular, so that the connecting rod (24) cannot rotate relative to the filter body (21).

23. The connection structure according to claim 19, characterized in that A limiting device (41) is provided at the filter mounting interface (11). When the filter (1) is in a non-operating state, the limiting device (41) can fix the sealing plate (31) to the filter mounting interface (11).

24. The connection structure according to claim 23, wherein The limiting device (41) includes one of the following devices: A. An inflatable sealing ring that can be inflated and expanded to fixedly seal the sealing plate (31) to the filter mounting interface (11) and deflated and contracted to allow the sealing plate (31) to leave the filter mounting interface (11); and B. A liquid-filled sealing ring that can expand by filling with liquid to fixedly seal the sealing plate (31) to the filter mounting interface (11) and contract by discharging liquid to allow the sealing plate (31) to leave the filter mounting interface (11).

25. The connection structure according to claim 19, wherein the connection structure includes a protection device (51), and the protection device (51) is arranged at the connection between the filter (1) and the isolator (2), the protection device (51) includes one or more channels for sucking gas or liquid from the filter mounting interface (11) and / or blowing gas or introducing liquid into the filter mounting interface (11).

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