Sealing device for biosafety laboratory through-wall pipe fitting

Abstract

The utility model discloses a sealing device for a biosafety laboratory through-wall pipe fitting, which comprises a barrel arranged in a through-wall manner, and the two ends of the barrel press sealing rings through spiral fasteners to realize static sealing of a wall; the inner side of the fastener is filled with sealing cement to form a dynamic sealing layer, the inner side of the cement is connected with a pressure stabilizing pipe with breathable micropores, and the pressure stabilizing pipe is externally connected with a miniature air pump with a pressure sensor. According to the device, the internal and external environments are blocked through a double-sealing structure, the air pressure of the daub cavity is actively adjusted, and the problems of sealing failure, deformation and moisture permeation caused by pressure fluctuation of a traditional through-wall pipe fitting are solved.

Description

Technical Field

[0001] This utility model relates to the field of laboratory pipeline sealing technology, specifically to a sealing device for through-wall pipe fittings in biosafety laboratories. Background Technology

[0002] Biosafety laboratories have extremely high requirements for the airtightness of pipes penetrating walls, needing to prevent the leakage of pathogenic microorganisms and the intrusion of external contaminants. Current technologies using rubber rings or expanding foam seals have significant drawbacks:

[0003] When the negative pressure environment in the laboratory fluctuates, the pressure difference between the inside and outside of the sealing layer can easily cause the colloidal material to deform and crack; the humid air inside the sealed cavity cannot be discharged, which accelerates the corrosion of metal parts and the growth of microorganisms; the sealing structure cannot be disassembled, and maintenance requires damage to the wall.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in related technologies, this utility model proposes a sealing device for through-wall pipe fittings in biosafety laboratories to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A sealing device for through-wall pipe fittings in a biosafety laboratory includes a cylindrical body with a wall on its outer side. Fasteners are spirally connected to both ends of the cylindrical body, and a sealing ring is installed between the fasteners and the wall. The fasteners include a body, and a sealing putty is installed on the inner side of the fasteners. A pressure stabilizing pipe is fixedly connected to the inner side of the sealing putty.

[0008] As a further embodiment of this utility model, the diameter of the hole in the wall is equal to the outer diameter of the cylinder, and the thickness of the wall is equal to the length of the cylinder.

[0009] As a further embodiment of this utility model, internal threads are provided on the inner sides of both ends of the cylinder, and external threads are provided on the outer side of the body, with the internal threads and external threads meshing with each other.

[0010] As a further embodiment of this utility model, a protrusion is fixedly connected to the inner side of the body, and anti-slip teeth are provided on the edge of the end of the body.

[0011] As a further embodiment of this utility model, both the fasteners and the sealant are provided in two sets.

[0012] As a further embodiment of this utility model, the voltage regulator tube includes a rigid tube body, and the middle end of the rigid tube body is provided with a breathable micropore.

[0013] As a further embodiment of this utility model, one end of the rigid tube is provided with an opening, the other end of the rigid tube is closed, and a miniature air pump equipped with a pressure sensor is installed on the outside of the opening.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention utilizes a combination of sealing rings, fasteners, a cylinder, sealing putty, and a pressure stabilizing pipe. The cylinder is placed in a hole in the wall, and sealing rings are placed at both ends and fasteners are tightened to connect and seal the main structure to the wall. After the pipe and pressure stabilizing pipe pass through the device, sealing putty is filled at both ends. Once the sealing putty has cured, the wall penetration and sealing are achieved. Inert gas can be drawn in or released using an air pump with a pressure sensor to stabilize the cavity pressure, maintain zero pressure difference on both sides of the putty, prevent deformation, and reduce the effects of moisture and condensation. The device can be freely disassembled without damaging the wall. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a sealing device for a through-wall pipe fitting in a biosafety laboratory according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the installation structure of the cylinder and the wall of a sealing device for a through-wall pipe fitting in a biosafety laboratory according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the sealing ring and fastener of a sealing device for a through-wall pipe fitting in a biosafety laboratory according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the overall structure of a fastener for a sealing device for a through-wall pipe fitting in a biosafety laboratory, according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the overall structure of the cylinder of a sealing device for a through-wall pipe fitting in a biosafety laboratory according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the installation structure of a pressure stabilizing pipe for a sealing device for through-wall pipe fittings in a biosafety laboratory, according to an embodiment of the present invention.

[0023] In the picture:

[0024] 1. Cylinder; 11. Internal thread; 2. Wall; 3. Sealing ring; 4. Fastener; 41. Body; 42. Protrusion; 43. External thread; 44. Anti-slip teeth; 5. Sealing putty; 6. Pressure stabilizing pipe; 61. Rigid pipe body; 62. Breathable micropores; 63. Opening. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, a sealing device for through-wall pipe fittings in a biosafety laboratory is provided.

[0027] Please refer to the instruction manual appendix. Figure 1-6 According to an embodiment of the present invention, a sealing device for a through-wall pipe fitting in a biosafety laboratory includes a cylindrical body 1, a wall 2 on the outer side of the cylindrical body 1, fasteners 4 spirally connected to both ends of the cylindrical body 1, a sealing ring 3 installed between the fasteners 4 and the wall 2, the fasteners 4 including a body 41, a sealing putty 5 installed on the inner side of the fasteners 4, and a pressure stabilizing pipe 6 fixedly connected to the inner side of the sealing putty 5.

[0028] Insert the cylinder 1 through the pre-drilled hole in the wall 2 (hole diameter = outer diameter of the cylinder, wall thickness = cylinder length); install the sealing ring 3 and the fastener 4 filled with sealing putty 5 at both ends of the cylinder 1 in sequence; rotate the fastener 4 so that the external thread 43 engages with the internal thread 11 of the cylinder until the protrusion 42 presses the sealing putty 5; insert the pressure stabilizing pipe 6 into the inside of the putty 5 and connect the micro air pump to the opening 63.

[0029] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, the diameter of the hole in the wall 2 is equal to the outer diameter of the cylinder 1, and the thickness of the wall 2 is equal to the length of the cylinder 1.

[0030] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, the inner sides of both ends of the cylinder 1 are provided with internal threads 11, and the outer side of the body 41 is provided with external threads 43, and the internal threads 11 and external threads 43 mesh with each other.

[0031] In one embodiment, please refer to the appendix to the specification. Figure 1-6As a further embodiment of this utility model, a protrusion 42 is fixedly connected to the inner side of the body 41, and anti-slip teeth 44 are provided on the end edge of the body 41.

[0032] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, both the fastener 4 and the sealing putty 5 are provided in two sets.

[0033] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, the voltage regulator tube 6 includes a rigid tube body 61, and the middle end of the rigid tube body 61 is provided with a breathable micropore 62.

[0034] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of the present invention, one end of the rigid tube 61 is provided with an opening 63, the other end of the rigid tube 61 is closed, and a miniature air pump equipped with a pressure sensor is installed on the outside of the opening 63.

[0035] During use, the breathable micropores 62 slowly balance the air pressure in the cavity of the sealing putty 5 with the laboratory air pressure; when the pressure sensor detects that the negative pressure in the cavity exceeds the limit (such as a sudden strong negative pressure in the laboratory), the air pump replenishes the cavity with air; when the positive pressure exceeds the limit, the air is extracted to maintain the stability of the sealing putty 5; the air pump is started briefly at regular intervals to replace the humid air in the cavity (in conjunction with laboratory humidity monitoring).

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sealing device for a bio-safety laboratory wall-penetrating fitting, comprising a cartridge (1), characterized in that: The outer side of the cylinder (1) is provided with a wall (2), and the two ends of the cylinder (1) are spirally connected with fasteners (4). A sealing ring (3) is installed between the fastener (4) and the wall (2). The fastener (4) includes a body (41). A sealing putty (5) is installed on the inner side of the fastener (4). A pressure stabilizing pipe (6) is fixedly connected to the inner side of the sealing putty (5).

2. A sealing device for through-wall pipe fittings in a biosafety laboratory according to claim 1, characterized in that: The diameter of the hole in the wall (2) is equal to the outer diameter of the cylinder (1), and the thickness of the wall (2) is equal to the length of the cylinder (1).

3. A sealing device for through-wall pipe fittings in a biosafety laboratory according to claim 1, characterized in that: The inner sides of both ends of the cylinder (1) are provided with internal threads (11), and the outer side of the body (41) is provided with external threads (43). The internal threads (11) and the external threads (43) mesh with each other.

4. A sealing device for through-wall pipe fittings in a biosafety laboratory according to claim 1, characterized in that: The inner side of the body (41) is fixedly connected with a protrusion (42), and the end edge of the body (41) is provided with anti-slip teeth (44).

5. A sealing device for through-wall pipe fittings in a biosafety laboratory according to claim 1, characterized in that: Both the fastener (4) and the sealant (5) are provided in two sets.

6. A sealing device for through-wall pipe fittings in a biosafety laboratory according to claim 1, characterized in that: The voltage regulator tube (6) includes a rigid tube body (61), and the middle end of the rigid tube body (61) is provided with a breathable micropore (62).

7. A sealing device for a through-wall pipe fitting in a biosafety laboratory according to claim 6, characterized in that: One end of the rigid tube (61) is provided with an opening (63), and the other end of the rigid tube (61) is closed. A miniature air pump with a pressure sensor is installed on the outside of the opening (63).

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