Biosafety air-tight door with delivery window

Abstract

The utility model belongs to the technical field of high-grade biological safety laboratory delivery windows, and particularly relates to a biological safety type air-tight door with a delivery window, a through hole is formed in the air-tight door, a mounting part is arranged on the periphery of the air-tight door, and a line sealing area and a face sealing area are sequentially arranged on the mounting part in the direction gradually away from the through hole. A groove is formed in the line sealing area; the delivery window comprises a window body arranged in the through hole in a penetrating mode, the window body comprises a first window body extending into the airtight door and a second window body extending out of the airtight door, a flange is integrally arranged at the end, close to the airtight door, of the first window body, and the flange is detachably connected with the installation part in a fastened mode through a fastener. An elastic sealing gasket is arranged between the flange and the face sealing area, sealant is arranged between the flange and the line sealing area, and when the flange is installed on the installation portion, the protruding portion of the sealant adheres to the flange and is extruded by the flange to deform so as to achieve line sealing.

Description

Technical Field

[0001] The utility model belongs to the technical field of transfer windows in high-level biosafety laboratories, and in particular relates to a biosafety airtight door with a transfer window. Background Art

[0002] A transfer window is an item transfer device, mainly used in industries such as biosafety and clean technology. It is used to transfer small items between areas with high contamination probability and areas with low contamination probability. It can avoid direct connection between two adjacent areas and effectively reduce the contamination that occurs during the transfer process. At the same time, after setting up the transfer window, there is no need to open the airtight door when transferring small items, thereby reducing the number of times the airtight door is opened, thereby ensuring the airtightness of the laboratory to a certain extent. However, in the actual use of the transfer window, it is found that the airtightness of the transfer window is often not good enough, which leads to the problem of not meeting higher sealing and sterilization requirements.

[0003] To this end, the utility model application number 201020508688.1 discloses a stainless steel airtight transfer window with a disinfection interface, including a box body, a mechanically compressed or inflatable airtight side door, an interlocking device, a control panel, a disinfection gas inlet and outlet, a sealing device, a ventilation pipe, a fan, and an ultraviolet lamp disinfection device. This solution achieves sealing by adopting a special mechanically compressed or inflatable airtight side door to meet high-level sealing and sterilization requirements, and can effectively solve the airtightness problem of the small item transfer channel in the biosafety room.

[0004] However, to open a transfer window on the wall, it is necessary to reserve a wall hole during the laboratory construction process, and then install the transfer window into the wall. This installation method has the problem of relatively high construction period and installation cost. At the same time, when the on-site installation space is limited, the installation is more difficult. In addition, according to traditional industry standards, materials need to be separated from the flow of people. Therefore, the transfer window and the closed door are usually set on different walls of the laboratory. For example, a closed door for personnel and large equipment to enter and exit is set on one side of the laboratory wall, and a transfer window is installed on the other side wall of the laboratory. However, if the space on the side where the transfer window is installed is narrow, the transfer window is very likely to be difficult to install or cannot be opened and used normally. See Figure 5 At this time, it is necessary to install a transfer window on the same side wall as the sealed door, that is, to install the transfer window next to the sealed door. At this time, if the area of ​​the side wall is small, especially when a double-opening sealed door has been installed, there will be a problem of insufficient wall installation space, so that there is no extra installation space on the wall to install the transfer window. Utility Model Content

[0005] The purpose of the utility model is to provide a biosafety closed door with a transfer window to partially solve or alleviate the above-mentioned technical problems. By detachably mounting the transfer window on the closed door, the safety transfer window can be conveniently installed even when the installation space is limited. In addition, two-level sealing measures are set at the installation positions of the two to ensure airtightness between the two.

[0006] In order to solve the above-mentioned technical problems, the present invention specifically adopts the following technical solutions:

[0007] A biosafety sealed door with a transfer window, wherein the sealed door is provided with a through hole, and an outer wall of the sealed door is provided with a mounting portion for fixing the transfer window around the through hole, wherein a wire sealing area and a surface sealing area are sequentially provided on the mounting portion in a direction gradually away from the through hole, wherein a groove is provided on the wire sealing area;

[0008] The transfer window includes a window body, which is disposed through the through hole and includes a first window body extending into the sealed door and a second window body extending outside the sealed door, and an end of the first window body close to the sealed door is integrally provided with a flange surrounding the window body, and the flange is detachably fastened to the mounting portion by a fastener;

[0009] It also includes a sealing assembly, which includes an elastic sealing gasket and a sealant located between the flange and the mounting portion, wherein one side of the elastic sealing gasket is sealed with the flange surface, and the other side is sealed with the surface sealing area; the sealant is arranged in the groove and protrudes out of the groove, so that when the flange is installed on the mounting portion, the protruding portion of the sealant adheres to the flange and is squeezed and deformed by the flange to achieve linear sealing.

[0010] As an improvement, the length of the first window extending into the sealed door is greater than the length of the second window extending out of the sealed door.

[0011] As an improvement, a decorative panel is fixedly provided on the inner side wall of the sealed door around the through hole.

[0012] As an improvement, the decorative plate is a stainless steel plate.

[0013] As an improvement, the first window body includes a first main body and a first door leaf, and the first door leaf is rotatably arranged on the first main body; the second window body includes a second main body and a second door leaf, and the second door leaf is rotatably arranged on the second main body.

[0014] As an improvement, the first window and the second window are respectively provided with electromagnetic locks, and the second window is provided with a door handle at a position corresponding to the electromagnetic lock.

[0015] As an improvement, it also includes a disinfection air pipe, which includes an air inlet pipe and an air outlet pipe. One end of the air inlet pipe and the air outlet pipe respectively passes through the second window and is connected to the cavity inside the window. The parts of the air inlet pipe and the air outlet pipe extending out of the outside of the window are respectively provided with one-way valves.

[0016] As an improvement, it further comprises a support member for supporting the second window body, one side of the support member is fixed to the bottom of the second window body, and the other side is fixed to the closed door.

[0017] As an improvement, the first door leaf is rotatably mounted on the first main body via a hinge, and the second door leaf is rotatably mounted on the second main body via a hinge.

[0018] As an improvement, both the first door leaf and the second door leaf are provided with visual windows.

[0019] The principle and beneficial technical effects of the present utility model are:

[0020] Compared with the traditional method of installing the transfer window directly on the wall, this application sets the window directly on the closed door. During installation, the transfer window and the closed door are installed on the laboratory wall as a whole, without the need to reserve a separate transfer window installation hole on the wall. It is simple and quick, and effectively solves the problem of insufficient wall installation space.

[0021] The Chinese invention patent application with publication number CN115749543A discloses a small movable safety isolation device for emergency isolation. Although it proposes to set a biosafety transfer window on the outward-opening door, its application scenario is different from that of the present application: the present application is aimed at an immovable laboratory, and due to limited space and conditions, it is impossible to set up sealed doors and transfer windows on different walls respectively, nor is it possible to install transfer windows side by side on the wall where the sealed door is installed; while the present application is aimed at a movable negative pressure isolation cabin, and a transfer window can be installed on any of its walls. Moreover, in order to facilitate rapid deployment and folding on site, the transfer window and the outward-opening door on one side are designed as an integrated whole, which also avoids the problem of reduced sealing between the transfer window and the outward-opening door during continuous transportation or folding. That is to say, although it adopts the method of setting a transfer window on the outward-opening door, it does not have the problem of limited installation space, that is, it does not have the technical problem existing in this application. Therefore, there is no technical inspiration for applying this application to solve the technical problem solved by this application. Moreover, since the transfer window and the outward-opening door are set as one piece, when a part of the transfer window or the outward-opening door fails, the outward-opening door and the transfer window need to be replaced as a whole, which not only makes the operation troublesome, but also increases the maintenance cost. However, this solution sets a flange as an integral part on the outside of the transfer window, and then detachably connects the transfer window to the closed door through the flange, so that only one of the two can be replaced, which greatly reduces the maintenance cost. In addition, a two-stage sealing measure is set between the flange and the closed door, thereby ensuring the airtightness between the detachably installed transfer window and the closed door.

[0022] Furthermore, the space inside the isolation cabin is usually limited, while the space outside the cabin is ample, so the portion of the transfer window extending into the isolation cabin cannot be too much. However, in order to ensure that there is enough storage space inside the transfer window, most of the transfer window is extended to the outside of the isolation cabin. However, as mentioned above, this application is aimed at scenarios with limited external space. Such a setting may result in insufficient space for installing the transfer window or difficulty in opening it. In this application, considering that the space inside the laboratory is generally sufficient and the passage outside the laboratory is usually narrow, the length of the first window extending into the door is greater than the length of the second window extending outside the door. This can effectively save space outside the laboratory and further effectively avoid the problem of insufficient space for installing the transfer window.

[0023] At the same time, a stainless steel decorative panel is set on the outside of the sealed door, which not only makes the sealed door more beautiful but also further plays a sealing role. Such multiple sealing measures cooperate with each other to effectively ensure the airtightness of the transfer window. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the description of the prior art. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the various elements or parts are not necessarily drawn according to the actual scale. Obviously, the drawings described below are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without inventive work.

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0026] Figure 2 This is an exploded view of the three-dimensional structure of an embodiment of the utility model;

[0027] Figure 3 This is a schematic structural diagram of an embodiment of the utility model in which the second door leaf is in an open state;

[0028] Figure 4 This is a side exploded view of an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the laboratory plan structure of the present utility model;

[0030] Figure 6a and Figure 6b They respectively reflect the state of the leak detection airbag after it is inflated and becomes larger, and the state of it after it is reduced when a leak occurs.

[0031] Markings in the figure: 1. Sealed door; 101. Installation part; 2. Window; 201. First window; 202. Second window; 3. Visible window; 4. Flange; 5. Sealing assembly; 6. Decorative panel; 7. Electromagnetic lock; 8. Inlet pipe; 9. Outlet pipe; 10. One-way valve; 11. Bolt; 12. Hinge; 13. Support. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Herein, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention and have no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0034] As used herein, terms such as "upper," "lower," "inner," "outer," "front," "back," "one end," and "the other end" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] As used herein, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood broadly. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model on a case-by-case basis.

[0036] As used herein, "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] Herein, "plurality" means two or more than two, ie, it includes two, three, four, five, etc.

[0038] like Figure 1 As shown, the utility model provides a biosafety closed door 1 with a transfer window, a rectangular through hole is provided at the center of the door, the part of the closed door 1 close to the through hole is a mounting part, a threaded hole is provided on the mounting part, a window 2 is provided through the through hole, the window 2 is a rectangular parallelepiped, the part connected to the closed door 1 is fixed with a flange 4 by a bolt 11, when in use, the flange 4 is fitted with the mounting part, and then the bolt 11 is screwed into the threaded hole for fixing, in order to facilitate the disinfection of the inside of the transfer window, a disinfection air pipe is provided at the bottom of the transfer window, the specific disinfection air pipe includes an air inlet pipe 8 and an air outlet pipe 9, one end of the air inlet pipe 8 and the air outlet pipe 9 passes through the window 2 and is connected to the internal cavity of the window 2, and a one-way valve 10 is provided at the end outside the window 2, and then connected to the disinfection machine. The specific disinfection machine adopts the existing disinfection equipment on the market, which will not be described in detail here.

[0039] like Figure 2 、 Figure 4The window includes a first window 201 and a second window 202, wherein the window part located inside the sealed door 1 (i.e., inside the laboratory) is the first window 201, and the window part located outside the sealed door 1 (i.e., outside the laboratory) is the second window 202. Taking into account the small space of the passage outside the laboratory, in this solution, the length of the first window 201 extending into the door is greater than the length of the second window 202 extending outside the door, that is, the space of the first window 201 is greater than the space of the second window 202. Such a setting can effectively prevent the window from occupying too much space in the aisle. At the same time, in order to keep the first window 201 and the second window 202 balanced and installed more firmly, a support member 13 for supporting the window is installed at the bottom of the first window 201. The specific support member 13 can be a steel frame in the shape of a right triangle, and the two right-angled sides of the triangle are fixed to the bottom of the first window 201 and the side wall of the sealed door 1 by bolts 11 respectively.

[0040] The first window includes a first body and a first door leaf, and the second window includes a second body and a second door leaf. Figure 1 The first door leaf is rotatably mounted on the first main body via a hinge 12; the second door leaf is rotatably mounted on the second main body via a hinge 12. Figure 3 Electromagnetic locks 7 are provided on both the first window 201 and the second window 202. The two electromagnetic locks 7 form an interlocking structure, that is, when one door leaf is opened, the other door leaf cannot be opened; transparent viewing windows 3 are provided on both the first door leaf and the second door leaf to facilitate staff to observe the internal situation of the transfer window. In order to ensure the airtightness of the transfer window, the viewing windows are integrally formed with the first door leaf and the second door leaf respectively.

[0041] In order to further ensure the airtightness between the transfer window and the installation part of the sealed door, a sealing component 5 is arranged between the flange 4 and the installation part 101. The specific sealing component 5 is a rubber gasket, and a hole corresponding to the threaded hole is opened on the rubber gasket to facilitate the bolt to pass through the hole into the threaded hole and fix it to the sealed door. At the same time, in order to make the sealing component more firmly installed to ensure the sealing effect, a groove is opened on the installation part, and a protrusion is provided in the corresponding area of ​​the sealing component and the groove. During installation, the protrusion is embedded in the groove. A stainless steel decorative plate is also welded on the side of the installation part away from the flange.

[0042] Compared with the existing technology, this solution effectively solves the problems of insufficient installation space and high installation cost of the transfer window. By matching the flange, sealing assembly and decorative panel, it ensures that the transfer window has good airtightness.

[0043] Compared with the traditional method of installing the transfer window directly on the wall, this application sets the window directly on the closed door. During installation, the transfer window and the closed door are installed on the laboratory wall as a whole, without the need to reserve a separate transfer window installation hole on the wall. It is simple and quick, and effectively solves the problem of insufficient wall installation space.

[0044] The Chinese invention patent application with publication number CN115749543A discloses a small movable safety isolation device for emergency isolation. Although it proposes to set a biosafety transfer window on the outward-opening door, its application scenario is different from that of the present application: the present application is aimed at an immovable laboratory, and due to limited space and conditions, it is impossible to set up sealed doors and transfer windows on different walls respectively, nor is it possible to install transfer windows side by side on the wall where the sealed door is installed; while the present application is aimed at a movable negative pressure isolation cabin, and a transfer window can be installed on any of its walls. Moreover, in order to facilitate rapid deployment and folding on site, the transfer window and the outward-opening door on one side are designed as an integrated whole, which also avoids the problem of reduced sealing between the transfer window and the outward-opening door during continuous transportation or folding. That is to say, although it adopts the method of setting a transfer window on the outward-opening door, it does not have the problem of limited installation space, that is, it does not have the technical problem existing in this application. Therefore, there is no technical inspiration for applying this application to solve the technical problem solved by this application. Moreover, since the transfer window and the outward-opening door are set as one piece, when a part of the transfer window or the outward-opening door fails, the outward-opening door and the transfer window need to be replaced as a whole, which not only makes the operation troublesome, but also increases the maintenance cost. However, this solution sets a flange as an integral part on the outside of the transfer window, and then detachably connects the transfer window to the closed door through the flange, so that only one of the two can be replaced, which greatly reduces the maintenance cost. In addition, a two-stage sealing measure is set between the flange and the closed door, thereby ensuring the airtightness between the detachably installed transfer window and the closed door.

[0045] Furthermore, the space inside the isolation cabin is usually limited, while the space inside the cabin is ample, so the portion of the transfer window extending into the isolation cabin cannot be too much. However, in order to ensure that there is enough storage space inside the transfer window, most of the transfer window is extended to the outside of the isolation cabin. However, as mentioned above, this application is aimed at scenarios with limited external space. Such a setting may result in insufficient space for installing the transfer window or difficulty in opening it. In this application, considering that the internal space of the laboratory is generally sufficient, while the passage outside the laboratory is usually narrow, the length of the first window extending into the door is greater than the length of the second window extending outside the door. This can effectively save space outside the laboratory and further effectively avoid the problem of insufficient space for installing the transfer window.

[0046] See also Figure 2At the same time, stainless steel decoration is set on the outside of the closed door, which not only makes the closed door more beautiful but also further plays a sealing role. Such multiple sealing measures cooperate with each other to effectively ensure the airtightness of the transfer window.

[0047] Furthermore, the outlet pipe is a three-way pipe, and its first end passes through the window and is connected to the internal cavity of the window. The second and third ends outside the window are respectively provided with one-way valves, wherein the second end can be connected to the sterilizer, and the third end is connected to an elastic airbag for leak detection. Usually, the one-way valve on the third end is in a closed state; when leak detection is required, the one-way valve on the third end is opened, and the one-way valve on the second end is closed, so that when a certain amount of sterilizing gas is filled through the inlet pipe, the airbag continues to swell and grow. Figure 6a If the airbag does not leak within the preset time, it means that the sealing door has not leaked. If it gradually becomes smaller or returns to its original size within the preset time, such as Figure 6b , indicating that the sealed door may be leaking. This is especially true after extended use, when the gasket or sealant in the sealing assembly ages and is not promptly maintained, leading to leaks. A separate leak detection device would increase costs. Therefore, installing a small leak detection airbag on the outlet pipe not only allows for low-cost leak detection, but also allows the sterilizing gas to remain in the sealed space for a certain period of time, thus achieving disinfection.

[0048] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0049] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A biosafety sealed door with a transfer window, characterized by: The sealed door is provided with a through hole, and an outer wall of the sealed door is provided with a mounting portion for fixing the transfer window around the through hole, wherein a line sealing area and a surface sealing area are sequentially provided on the mounting portion in a direction gradually away from the through hole, wherein a groove is provided on the line sealing area; The transfer window includes a window body, which is disposed through the through hole and includes a first window body extending into the sealed door and a second window body extending outside the sealed door, and an end of the first window body close to the sealed door is integrally provided with a flange surrounding the window body, and the flange is detachably fastened to the mounting portion by a fastener; It also includes a sealing assembly, which includes an elastic sealing gasket and a sealant located between the flange and the mounting portion, wherein one side of the elastic sealing gasket is sealed with the flange surface, and the other side is sealed with the surface sealing area; the sealant is arranged in the groove and protrudes out of the groove, so that when the flange is installed on the mounting portion, the protruding portion of the sealant adheres to the flange and is squeezed and deformed by the flange to achieve linear sealing.

2. The biosafety sealed door with a transfer window according to claim 1, characterized in that: The length of the first window extending into the airtight door is greater than the length of the second window extending out of the airtight door.

3. The biosafety sealed door with a transfer window according to claim 1, characterized in that: A decorative plate is fixedly arranged on the inner side wall of the sealed door and surrounds the through hole.

4. The biosafety sealed door with a transfer window according to claim 3, characterized in that: The decorative plate is a stainless steel plate.

5. The biosafety sealed door with a transfer window according to claim 1, characterized in that: The first window body includes a first main body and a first door leaf, and the first door leaf is rotatably arranged on the first main body; the second window body includes a second main body and a second door leaf, and the second door leaf is rotatably arranged on the second main body.

6. The biosafety sealed door with a transfer window according to claim 5, characterized in that: Electromagnetic locks are respectively provided on the first window and the second window, and a door handle is provided on the second window at a position corresponding to the electromagnetic lock.

7. The biosafety sealed door with a transfer window according to claim 1, characterized in that: It also includes a disinfection air pipe, which includes an air inlet pipe and an air outlet pipe. One end of the air inlet pipe and the air outlet pipe respectively passes through the second window and is connected to the cavity inside the window. The parts of the air inlet pipe and the air outlet pipe extending out of the outside of the window are respectively provided with one-way valves.

8. The biosafety sealed door with a transfer window according to claim 1, characterized in that: It also includes a support member for supporting the second window body, one side of the support member is fixed to the bottom of the second window body, and the other side is fixed to the closed door.

9. The biosafety sealed door with a transfer window according to claim 5, characterized in that: The first door leaf is rotatably arranged on the first main body through a hinge, and the second door leaf is rotatably arranged on the second main body through a hinge.

10. The biosafety sealed door with a transfer window according to claim 5, characterized in that: The first door leaf and the second door leaf are both provided with visual windows.

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