Door frame and laboratory door

Abstract

The utility model relates to the technical field of sealing equipment, in particular to a door frame and a laboratory door, a main support pillar, a main left pillar and a main right pillar are connected together through an inserting structure to form a main frame, and an auxiliary support pillar, an auxiliary left pillar and an auxiliary right pillar are connected together through an inserting structure to form an auxiliary frame; the auxiliary frame sleeves the outer side of the main frame to form a whole, so that the assembly is completed; through the inserting structures on the main frame and the auxiliary frame, the door frame can be automatically positioned in the assembling process, the assembling convenience and accuracy are improved, the installation mechanism on the main frame can limit the auxiliary frame arranged on the main frame in a sleeving mode, the auxiliary frame is stably arranged on the outer side of the auxiliary frame in a sleeving mode, meanwhile, the auxiliary frame limits the main frame in the auxiliary frame, and the assembling efficiency is improved. A stable and reliable inverted concave structure is formed, assembling and welding are convenient, and auxiliary tools or positioning equipment needed in the assembling process are reduced; the main frame and the auxiliary frame form a double structure, deformation or damage caused by the weight of the door leaf or external force in the using process is prevented, and using safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing equipment, in particular to a door frame and a laboratory door. Background Art

[0002] The laboratory door is one of the important components of laboratory safety. In order to prevent dangerous substances in the laboratory from leaking into the external environment and protect the safety of laboratory staff and the surrounding environment, the sealing performance of the laboratory door is required to be very high; there are many factors that may affect the sealing performance of the door, such as the material of the door, the unevenness of the door frame, and the looseness of the door gap. In order to improve the sealing performance of the laboratory door, first, doors with better corrosion resistance, high temperature resistance, fire resistance and other characteristics can be used, such as steel doors and stainless steel doors, and these materials can effectively improve the sealing performance of the door; second, the door frame can be adjusted to make it flat and closely fit with the door leaf; in addition, a sealing strip can be installed to fill the door gap, such as installing a sealing strip made of rubber, silica gel and other materials between the door frame and the door leaf, so as to effectively isolate the internal and external environments of the laboratory; when using the laboratory door, attention should be paid to regular inspection and maintenance, and damaged or aged parts should be replaced in time to ensure that the laboratory door is always in good condition; the door frame is usually assembled and welded by several columns to form a frame structure, but the overall strength of the door frame assembled and welded only by several columns needs to be enhanced, and it is not suitable for doors with heavier overall weight, such as laboratory doors. Moreover, when several columns are assembled, it is not convenient to position, and it is necessary to use an assembly door frame workbench disclosed in, for example, the publication number CN202120876690.2 for positioning and assembly.

[0003] Based on this, the applicant considered designing a door frame and a laboratory door that can self-position. Summary of the Utility Model

[0004] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: how to provide a door frame and a laboratory door that can self-position.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A door frame, which includes an inverted concave main frame and a sub-frame;

[0007] The main frame includes a main top column and main left and right columns connected to its left and right ends. Plug-in structures are provided at the connections of the main top column with the main left and right columns; the sub-frame includes a sub-top column and sub-left and right columns connected to its left and right ends. Plug-in structures are provided at the connections of the sub-top column with the sub-left and right columns;

[0008] The sub-frame is sleeved outside the main frame, and an installation mechanism for inserting and restricting the sub-frame is fixedly arranged on the outer side wall of the main frame.

[0009] The working principle and advantages of a door frame and a laboratory door in this technical solution are as follows:

[0010] First, connect the main top column, the main left column, and the main right column together through a plug-in structure to form a main frame, and connect the auxiliary top column, the auxiliary left column, and the auxiliary right column together through a plug-in structure to form an auxiliary frame; then insert the auxiliary frame into the installation mechanism on the main frame, so that the auxiliary frame is sleeved outside the main frame to form an integral body, thus completing the assembly; after that, the connections between the top column and the main left column and the main right column, the connections between the auxiliary top column and the auxiliary left column and the auxiliary right column, and the contact between the main frame and the auxiliary frame can be welded and fixed to form a door frame; through the plug-in structures on the main frame and the auxiliary frame, the door frame can be self-positioned during assembly, improving the convenience and accuracy of assembly, and the installation mechanism on the main frame can restrict the auxiliary frame sleeved on the main frame, enabling the auxiliary frame to be stably sleeved outside the main frame, while the auxiliary frame restricts the main frame inside it, forming a stable and reliable concave structure, facilitating assembly and welding, and reducing the auxiliary tools or positioning equipment required during assembly; the main frame and the auxiliary frame form a double structure, which can enhance the overall strength of the door frame, prevent deformation or damage caused by the weight of the door leaf or external forces during use, and improve the use safety.

[0011] Further, the installation mechanism includes a number of limiting baffles fixed on the main top column, the main left column, and the main right column, and a gap for inserting the auxiliary top column, the auxiliary left column, or the auxiliary right column is formed between the limiting baffle and the outer wall of the main frame.

[0012] Further, the limiting baffle is a concave plate, the concave plate includes opposite support plates, and an L-shaped adaptation groove is provided on the support plate.

[0013] Further, the concave plate is welded to the main top column, the main left column, and the main right column.

[0014] Further, door jambs are fixedly connected to the sides of the main frame and the auxiliary frame facing away from each other.

[0015] Further, the door jamb on the main frame includes extension plates fixedly connected to the main top column, the main right column, and the main left column respectively; the door jamb on the auxiliary frame includes extension plates fixedly connected to the auxiliary top column, the auxiliary right column, and the auxiliary left column respectively.

[0016] Further, the plug-in structure includes a perforated plate protruding and a first plug, and a corresponding hole for inserting the first plug is formed on the perforated plate.

[0017] Further, the main frame further includes a main bottom column, and the left and right ends of the main bottom column are respectively connected to the bottom ends of the main left column and the main right column.

[0018] Further, insertion holes are formed at the bottoms of the opposite sides of the main left column and the main right column, and second insertion blocks protruding from the left and right ends of the main bottom column are inserted into the insertion holes.

[0019] A laboratory door includes the above-mentioned door frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic perspective structure of the laboratory door according to an embodiment of the present invention Figure 1 ;

[0021] Figure 2 Schematic perspective structure of the laboratory door according to an embodiment of the present invention Figure 2 ;

[0022] Figure 3 Schematic top cross-sectional structure of the laboratory door according to an embodiment of the present invention Figure 1 ;

[0023] Figure 4 is Figure 3 an enlarged schematic view of part A in

[0024] Figure 5 is Figure 4 an enlarged schematic view of part C in

[0025] Figure 6 is Figure 4 an enlarged schematic view of part D in

[0026] Figure 7 is Figure 3 an enlarged schematic view of part B in

[0027] Figure 8 Schematic perspective structure diagram of the first elastic seal according to an embodiment of the present invention;

[0028] Figure 9 Schematic perspective structure diagram of the second elastic seal according to an embodiment of the present invention;

[0029] Figure 10 Schematic top cross-sectional structure of the laboratory door according to an embodiment of the present invention Figure 2 ;

[0030] Figure 11 is Figure 10 an enlarged schematic view of part E in

[0031] Figure 12 Schematic perspective structure diagram of the airtight pressing device according to an embodiment of the present invention;

[0032] Figure 13 Schematic perspective structure diagram of the assembly housing and restrictions according to an embodiment of the present invention;

[0033] Figure 14 Schematic diagram of the three-dimensional structure of the hinge connection member in the embodiment of the present utility model Figure 1 ;

[0034] Figure 15 Schematic diagram of the three-dimensional structure of the hinge connection member in the embodiment of the present utility model Figure 2 ;

[0035] Figure 16 Schematic diagram of the cross-sectional structure of the hinge connection member in the embodiment of the present utility model Figure 1 ;

[0036] Figure 17 Schematic diagram of the three-dimensional structure of the second hinge block in the embodiment of the present utility model;

[0037] Figure 18 Schematic diagram of the three-dimensional structure of the embedding block in the embodiment of the present utility model;

[0038] Figure 19 Schematic diagram of the three-dimensional structure of the first hinge block in the embodiment of the present utility model;

[0039] Figure 20 Schematic diagram of the three-dimensional structure of the hinge stud, central shaft and adjusting plate in the embodiment of the present utility model;

[0040] Figure 21 Schematic diagram of the three-dimensional structure of the door frame in the embodiment of the present utility model;

[0041] Figure 22 is Figure 21 the enlarged schematic diagram at position F in

[0042] Figure 23 Schematic diagram of the cross-sectional structure of the door frame in the embodiment of the present utility model;

[0043] Figure 24 Explosion diagram of the main frame in the embodiment of the present utility model;

[0044] Figure 25 Explosion diagram of the sub-frame in the embodiment of the present utility model;

[0045] In the above-mentioned drawings: 100, door frame; 101, protruding part; 200, door leaf; 201, window hole;

[0046] 310. First mounting groove; 320. First elastic seal; 321. First abutting tongue; 322. First inner cavity; 323. Protruding hook; 3231. Second inner cavity; 340. Second mounting groove; 350. Second elastic seal; 351. Second abutting tongue; 352. Third inner cavity; 360. Mounting ring; 361. T-shaped ring; 362. First ring groove; 370. First elastic sealing ring; 371. Annular cavity; 380. Transparent plate; 390. Connecting ring; 391. Second ring groove; 392. Second elastic sealing ring;

[0047] 410. Airtight mechanism; 411. Rotating rod; 4111. Rolling wheel; 4112. Handle; 412. Rotating cylinder; 4121. Driving rod; 420. Sealing block; 421. Inclined surface; 422. Vertical surface; 430. Assembly housing; 431. First assembly groove; 432. Gear; 433. Rack; 434. Second assembly groove; 435. Limiting disc; 4351. Fitting hole; 4352. Limiting angle; 4353. Rotating arc; 440. Connecting vertical plate; 450. Connecting block;

[0048] 510. First hinge block; 520. Second hinge block; 521. Side groove; 530. Insertion block; 531. Strip groove; 540. Hinge stud; 550. Limiting end plate; 560. Adjusting plate; 570. Central axis; 52. Connecting perforation; 53. Positioning screw hole; 54. Positioning screw;

[0049] 610. Main frame; 611. Main top column; 612. Main right column; 613. Main left column; 614. Main bottom column; 615. Limiting baffle; 6151. Adaptation groove; 620. Sub-frame; 621. Sub-top column; 622. Sub-right column; 623. Sub-left column; 630. Extension plate; 641. Perforated plate; 642. First insertion block; 643. Insertion hole; 644. Second insertion block. Detailed implementation manners

[0050] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are the orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0051] Refer to together Figure 1 、 Figure 2 、 Figure 21, Figure 22 , Figure 23 , Figure 24 and Figure 25 , this embodiment provides a door frame, which includes a concave main frame 610 and a sub-frame 620;

[0052] The main frame 610 includes a main top column 611 and main left columns 613 and main right columns 612 connected to its left and right ends respectively. Plug-in structures are provided at the joints of the main top column 611 with the main left columns 613 and main right columns 612; the sub-frame 620 includes a sub-top column 621 and sub-left columns 623 and sub-right columns 622 connected to its left and right ends respectively. Plug-in structures are provided at the joints of the sub-top column 621 with the sub-left columns 623 and sub-right columns 622;

[0053] The sub-frame 620 is sleeved on the outer side of the main frame 610, and an installation mechanism for inserting and restricting the sub-frame 620 is fixedly arranged on the outer side wall of the main frame 610.

[0054] In this embodiment, first, the main top column 611, the main left columns 613 and the main right columns 612 are connected together through the plug-in structure to form the main frame 610, and the sub-top column 621, the sub-left columns 623 and the sub-right columns 622 are connected together through the plug-in structure to form the sub-frame 620; then the sub-frame 620 is inserted into the installation mechanism on the main frame 610, so that the sub-frame 620 is sleeved on the outer side of the main frame 610 to form an integral body, thus completing the assembly; then the joints of the top column with the main left columns 613 and main right columns 612, the joints of the sub-top column 621 with the sub-left columns 623 and sub-right columns 622, and the contact places between the main frame 610 and the sub-frame 620 can be welded and fixed to form the door frame 100; through the plug-in structures on the main frame 610 and the sub-frame 620, the door frame 100 can be self-positioned during assembly, improving the convenience and accuracy of assembly, and the installation mechanism on the main frame 610 can restrict the sub-frame 620 sleeved on the main frame 610, so that the sub-frame 620 is stably sleeved on the outer side of the sub-frame 620, and at the same time the sub-frame 620 restricts the main frame 610 inside it to form a stable and reliable concave structure, which is convenient for assembly and welding, reducing the auxiliary tools or positioning equipment required during assembly; the main frame 610 and the sub-frame 620 form a double structure, which can enhance the overall strength of the door frame 100, prevent deformation or damage caused by the weight of the door leaf 200 or external forces during use, and improve the use safety.

[0055] Preferably, as Figures 21 to 25As shown, the installation mechanism includes a number of limiting baffles 615 fixed on the main top column 611, main left column 613 and main right column 612. A gap for inserting the secondary top column 621, secondary left column 623 or secondary right column 622 is provided between the limiting baffle 615 and the outer wall of the main frame 610; through the gap between the limiting baffle 615 and the outer wall of the main frame 610, precise positioning points and restrictions are provided for the insertion of the secondary frame 620, ensuring that the secondary frame 620 is correctly sleeved outside the main frame 610. At the same time, the assembly process is simplified, reducing the need for additional tools or fixing methods; the limiting baffle 615 can enhance the connection stability between the main frame 610 and the secondary frame 620, contributing to the assembly of the main frame 610 and the secondary frame 620, and improving the rigidity and load-bearing capacity of the entire door frame 100 structure.

[0056] Preferably, as Figures 21 to 24 shown, the limiting baffle 615 is a concave plate. The concave plate includes opposite support plates, and an L-shaped adaptation groove 6151 is provided on the support plates; the two support plates on the concave plate directly contact the secondary frame 620, and can firmly clamp the secondary frame 620 between the main frame 610 and the limiting baffle 615. The adaptation groove 6151 on the support plates allows the support plates to be more easily elastically deformed to a certain extent when subjected to a force. When the secondary frame 620 is inserted into the gap, the support plates elastically deform to a certain extent as the secondary frame 620 is inserted, ensuring that the secondary frame 620 can be successfully inserted into the gap while enabling the support plates to closely contact the secondary frame 620.

[0057] Preferably, the concave plate is welded to the main top column 611, main left column 613 and main right column 612; to firmly connect the concave plate to the main frame 610.

[0058] Preferably, as Figures 21 to 25 shown, door jambs are fixedly connected to the sides of the main frame 610 and the secondary frame 620 that face away from each other; the door jamb on the main frame 610 includes extension plates 630 fixedly connected to the main top column 611, main right column 612 and main left column 613 respectively; the door jamb on the secondary frame 620 includes extension plates 630 fixedly connected to the secondary top column 621, secondary right column 622 and secondary left column 623 respectively; the door jambs provide a unified outer cladding for the main frame 610 and the secondary frame 620, enhancing the overall sense of the door frame 100; the door jambs can provide an additional installation space cavity for sealing components, contributing to improving the sealing effect between the door and the door frame 100; the door jambs can protect the edges of the door frame 100, reducing damage caused by impact or wear; the door jambs can cover the inner structure of the door frame 100, providing a neater and more beautiful appearance.

[0059] Preferably, as Figures 21 to 25As shown, the plug-in structure includes a perforated plate 641 protruding and a first plug 642. A corresponding hole for inserting the first plug 642 is provided on the perforated plate 641. The first plug 642 can be conveniently inserted into the corresponding hole of the perforated plate 641, enabling precise fitting to ensure the stability and alignment of the connection.

[0060] Preferably, as Figure 21 and Figure 24 shown, the main frame 610 further includes a main bottom column 614. The left and right ends of the main bottom column 614 are respectively connected to the bottom ends of the main left column 613 and the main right column 612. Insertion holes 643 are provided at the bottom ends of the opposite sides of the main left column 613 and the main right column 612. Second plugs 644 protruding from the left and right ends of the main bottom column 614 are inserted into the insertion holes 643. Through the connection of the main bottom column 614 with the bottom ends of the main left column 613 and the main right column 612, the overall stability and structural strength of the bottom of the door frame 100 are enhanced. The insertion holes 643 provided at the bottom ends of the main left column 613 and the main right column 612 allow the second plugs 644 to be inserted, enabling the main bottom column 614 to be quickly inserted into the insertion holes 643 of the main left column 613 and the main right column 612, simplifying the assembly process.

[0061] A laboratory door includes the above-mentioned door frame. The laboratory door adopting the above door frame 100 has high overall strength. The self-positioning design of the door frame 100 helps to ensure the flatness of the door frame 100 and its close fit with the door leaf 200, thereby improving the sealing performance of the door.

[0062] Referring also to Figures 1 to 9 , the laboratory door further includes a sealing structure. The sealing structure includes the door frame 100 and a door leaf 200 hinged therein, and further includes a first sealing structure and a second sealing structure.

[0063] The first sealing structure includes a first installation groove 310 provided on the side edge of the door frame 100 and a first elastic sealing body 320 disposed therein. When the door leaf 200 on the door frame 100 is closed, the side edge of the door leaf 200 abuts against and presses the first elastic sealing body 320.

[0064] The second sealing structure includes a protruding portion 101 provided on the side edge of the door frame 100, a second installation groove 340 provided on the side edge of the door leaf 200, and a second elastic sealing body 350 disposed therein. When the door leaf 200 on the door frame 100 is closed, the protruding portion 101 on the door frame 100 extends into the second installation groove 340, abuts against and presses the second elastic sealing body 350.

[0065] In this embodiment, when the door leaf 200 on the door frame 100 is closed, the side of the door leaf 200 abuts against and squeezes the first elastic seal 320 in the first installation groove 310, and the protruding part 101 on the door frame 100 extends into the second installation groove 340, abuts against and squeezes the second elastic seal 350 in the second installation groove 340, forming a double seal, providing a double sealing effect, enhancing the sealing performance between the door leaf 200 and the door frame 100, and effectively preventing cross-contamination between the indoor and outdoor environments of the laboratory; the first elastic seal 320 and the second elastic seal 350 have good elasticity and flexibility, can adapt to the slight unevenness between the door leaf 200 and the door frame 100, ensure that the sealing strip is closely attached to the contact surface, and improve the sealing effect; the protruding part 101 on the door frame 100 can contact the second elastic seal 350 more deeply when the door leaf 200 is closed, enhancing the sealing effect. At the same time, the structure of the protruding part 101 can also serve as a physical barrier to further block the leakage of harmful substances; the first installation groove 310 on the door frame 100 and the second installation groove 340 on the door leaf 200 respectively provide fixation and support for the first elastic seal 320 and the second elastic seal 350, ensuring that the first elastic seal 320 and the second elastic seal can stably play their roles when the door leaf 200 is closed and are not easily detached or displaced.

[0066] Preferably, as Figures 3 to 5As shown, the first elastic seal 320 includes a mounting portion located within the first mounting groove 310 and a protruding hook 323 that protrudes from the first mounting groove 310; the mounting portion includes a plurality of first abutting tongues 321 that abut against the inner sidewall of the first mounting groove 310 and a first inner cavity 322, and the protruding hook 323 includes a second inner cavity 3231; the mounting portion of the first elastic seal 320 is located within the first mounting groove 310 to ensure that the seal can be stably fixed to the side of the door frame 100; the plurality of first abutting tongues 321 on the mounting portion can increase the friction between the first elastic seal 320 and the first mounting groove 310 to ensure that the seal does not loosen or shift during the closing and opening of the door leaf 200; the first inner cavity 322 of the mounting portion can provide a certain elastic space for the seal, enabling the first elastic seal 320 to better adapt to and recover its shape when subjected to pressure, thereby improving the sealing effect; the protruding hook 323 of the first elastic seal 320 that protrudes from the first mounting groove 310 enables the first elastic seal 320 to come into closer contact with the door leaf 200 when the door leaf 200 is closed, increasing the tightness of the seal, and at the same time preventing the door leaf 200 from coming into direct contact with the door frame 100 when the door leaf 200 is closed, preventing the door frame 100 and the door leaf 200 from being scratched or bruised due to direct contact; the second inner cavity 3231 inside the protruding hook 323 can also enhance the elasticity and adaptability of the first elastic seal 320, enabling the first elastic seal 320 to better adapt to and recover its shape when subjected to pressure, thereby improving the sealing effect; specifically, two first abutting tongues 321 are respectively provided on both sides of the mounting portion, and two first inner cavities 322 are provided inside.

[0067] Preferably, as Figure 3 , Figure 4 and Figure 6 shown, the second elastic seal 350 includes a plurality of second abutting tongues 351 that abut against the inner sidewall of the second mounting groove 340 and a third inner cavity 352; the plurality of second abutting tongues 351 on the second elastic seal 350 can increase the friction between the second elastic seal 350 and the second mounting groove 340 to ensure that the seal remains stable during the closing and opening of the door leaf 200 and is not easily displaced or detached; the third inner cavity 352 inside the second elastic seal 350 provides additional elastic space for the seal, enabling the second elastic seal 350 to better adapt to and recover its shape when subjected to pressure, thereby improving the sealing effect; specifically, two second abutting tongues 351 are respectively provided on both sides of the first elastic seal 320, and one third inner cavity 352 is provided inside.

[0068] Preferably, as Figures 1 to 6As shown, the door frame 100 is rectangular, and each of the four sides of the door frame 100 is provided with a first installation groove 310. The four first installation grooves 310 are interconnected and each is provided with a first elastic sealing body 320; the door frame 100 is designed to be rectangular, which is a common shape of laboratory doors and is easy to install and seal; the door frame 100 has installation grooves on the top, bottom, left and right sides, providing installation space for the sealing body; the four first installation grooves 310 are interconnected, and each installation groove is provided with a first elastic sealing body 320, which can provide all-round sealing.

[0069] Preferably, if Figures 1 to 6 As shown, the door leaf 200 is rectangular, and each of the four sides of the door leaf 200 is provided with a second mounting groove 340, the four second mounting grooves 340 are interconnected and each is provided with a second elastic sealing body 350, and the door frame 100 is provided with four protrusions corresponding to the four second mounting grooves 340 respectively; the door leaf 200 is designed to be rectangular, matching the shape of the door frame 100, ensuring the overall coordination and sealing; each side of the door leaf 200 is provided with a second mounting groove 340, corresponding to the four sides of the door frame 100, providing space for installing the second elastic sealing body 350; the four second mounting grooves 340 are interconnected, and each of the second mounting grooves 340 is provided with a second elastic sealing body 350, which can provide all-round sealing; the door frame 100 is provided with four protrusions corresponding to the four second mounting grooves 340 respectively, which interact with the second elastic sealing body 350 when the door leaf 200 is closed to enhance the sealing effect; specifically, the upper four protrusions of the door frame 100 are interconnected to form a ring to provide a sealing effect.

[0070] Preferably, if Figure 8 and Figure 9 As shown, the four second elastic sealing bodies 350 are integrally formed; the integrally formed second elastic sealing bodies 350 ensure the integrity of the sealing body, avoid the problem of poor sealing at the joints of multiple parts, and the integrally formed second elastic sealing bodies 350 reduce seams and connection points, providing overall durability and service life; specifically, the four first elastic sealing bodies 320 are also integrally formed.

[0071] Preferably, if Figure 1 and Figure 2 As shown, a transparent window is provided on the door leaf 200; the transparent window allows personnel outside the laboratory to observe the situation inside the laboratory without opening the door and confirm the internal safety status.

[0072] Preferably, if Figure 1 , Figure 2 , Figure 3 and Figure 7As shown in the figure, a window hole 201 is provided on the door leaf 200. An installation ring 360 is fixedly installed in the window hole 201. A T-shaped ring 361 protrudes from the inner side wall of the installation ring 360. Transparent plates 380 are respectively arranged on both sides of the T-shaped ring 361. Connecting rings 390 are detachably connected to both sides of the installation ring 360. The edge of the transparent plate 380 is located between the T-shaped ring 361 and the connecting ring 390. During installation, the connecting ring 390 is connected to the installation ring 360, and the T-shaped ring 361 on the connecting ring 390 and the installation ring 360 clamps and fixes the edge of the transparent plate 380, and a transparent window is formed through the center of the transparent plate 380 and the window hole 201.

[0073] Preferably, as Figure 1 , Figure 2 , Figure 3 and Figure 7 shown, first ring grooves 362 are provided on both sides of the T-shaped ring 361. First elastic sealing rings 370 are arranged in the first ring grooves 362. A second ring groove 391 is formed on the side of the connecting ring 390 facing the transparent window, and a second elastic sealing ring 392 is arranged in the second ring groove 391. An annular cavity 371 is arranged in the first elastic sealing ring 370. The first ring grooves 362 on both sides of the T-shaped ring 361 and the first elastic sealing rings 370 therein provide a sealed edge for the transparent plate 380 to prevent gas, liquid or other substances from leaking through the gap between the transparent plate 380 and the installation ring 360. The second ring groove 391 on the connecting ring 390 and the second elastic sealing ring 392 therein add another layer of sealing to ensure the sealing performance between the transparent plate 380 and the connecting ring 390. The annular cavity 371 arranged in the first elastic sealing ring 370 provides a certain elastic space for the sealing ring, allowing the sealing ring to better adapt to shape changes when under pressure and improving the sealing effect. Through the cooperation of the first elastic sealing ring 370 and the second elastic sealing ring 392, a double-sealing mechanism is formed, significantly improving the sealing performance of the transparent window. Specifically, a decorative plate is closely attached to the inner side wall of the above-mentioned T-shaped ring 361 to improve the aesthetics of the transparent window.

[0074] This embodiment also provides a laboratory door, including the above-mentioned sealing structure. Through the arrangement of the first elastic sealing body 320 and the second elastic sealing body 350, and the cooperation of the T-shaped ring 361 and the elastic sealing ring, the sealing effect of the laboratory door is improved, effectively preventing cross-contamination between the internal and external environments of the laboratory. The transparent window provided on the door leaf 200 allows external observation while maintaining the isolation of the laboratory environment, improving safety and convenience.

[0075] Specifically, the above-mentioned first elastic sealing body 320, second elastic sealing body 350, first elastic sealing ring 370 and second elastic sealing ring 392 can be made of elastic materials such as rubber, polyvinyl chloride, polyurethane, polytetrafluoroethylene, ethylene-vinyl acetate copolymer, etc.

[0076] Refer to Figure 1 , Figure 2 , Figure 10 , Figure 11 , Figure 12 as well as Figure 13 As shown, the laboratory door also includes an airtight pressing device, which includes a door leaf 200, a door frame 100 and an airtight pressing device, including a door leaf 200, a door frame 100 and an airtight pressing device, one side of the door leaf 200 is hingedly installed on one side of the door frame 100, and the other side of the door leaf 200 is matched with the other side of the door frame 100 through the airtight pressing device, the airtight pressing device includes a plurality of airtight mechanisms 410, a plurality of sealing blocks 420 and a limiting mechanism, a plurality of sealing blocks 420 are arranged on the other side of the door frame 100 from top to bottom, the lower half of the outer side of the sealing block 420 is set as an inclined surface 421, and the upper half is a vertical surface 422; a plurality of assembly shells 430 are arranged in the door leaf 200 from top to bottom, one airtight mechanism 410 corresponds to one assembly shell 430 and one sealing block 420, the airtight mechanism 410 includes a rotating rod 411, a rotating cylinder 412, a gear 432, The rack 433 slides up and down in cooperation with the corresponding assembly shell 430, and a plurality of racks 433 are connected together by a vertical rod. The gear 432 is rotatably arranged in the assembly shell 430, and the gear 432 is meshed with the rack 433. The rotating drum 412 is arranged on the outer surface of the door leaf 200, and the inner end of the rotating drum 412 passes through the door leaf 200 and the assembly shell 430 and is connected to the gear 432. The rotating rod 411 is passed through the outer end of the rotating drum 412, and a rolling wheel 4111 is provided at one end of the rotating rod 411 facing the sealing block 420. When sealing is performed, the rotating rod 411 rotates around the rotating drum 412 so that the rolling wheel 4111 rolls from the inclined surface 421 to the vertical surface 422. The limiting mechanism is used to limit the rotation angle of the rotating rod 411, and the rolling wheel 4111 on the rotating rod 411 cannot roll out of the vertical surface 422 in the direction away from the inclined surface 421.

[0077] In this embodiment, the staff rotates the rotating rod 411. The rotating rod 411 rotates counterclockwise around the rotating cylinder 412. During this process, the rolling wheel 4111 first rolls upward along the inclined surface 421 and finally rolls onto the vertical surface 422. The rolling wheel 4111 is subjected to an outward force from the vertical surface 422, thereby effectively reducing the door gap. When rotating, it drives the gear 432 to rotate. Since the gear 432 meshes with the rack 433, and multiple racks 433 are connected together by vertical rods, the staff's action on one rotating rod 411 can drive all the rotating rods 411 to rotate. After all the rolling wheels 4111 are all in cooperation with the corresponding sealing blocks 420, the sealing performance between the door leaf 200 and the door frame 100 is further improved. The limiting mechanism can effectively limit the rotation angle of the rotating rod 411, prevent the rolling wheel 4111 from rolling out of the vertical surface 422 in the direction away from the inclined surface 421, avoid the situation of excessive rotation, and ensure that the cooperation between the rolling wheel 4111 and the sealing block 420 is always effective. Through the design of the limiting mechanism, the staff does not need to pay too much attention to the rotation force and angle during use, simplifies the operation process, and improves the practicability.

[0078] Preferably, as Figures 10 to 13 shown, the limiting mechanism is arranged in the assembly housing 430. The limiting mechanism includes a second assembly groove 434 opened in the assembly housing 430 and a limiting disk 435 located therein. The limiting disk 435 is connected to the inner end of the rotating cylinder 412. The limiting mechanism is arranged in the assembly housing 430, which is beneficial to keeping the appearance of the door leaf 200 clean and tidy. At the same time, the operation mechanism is hidden inside to reduce the interference of external factors. The limiting disk 435 located in the second assembly groove 434 is directly connected to the inner end of the rotating cylinder 412, so that the rotation of the rotating cylinder 412 can be directly transmitted to the limiting disk 435, thereby effectively controlling the rotation of the rotating rod 411. The limiting disk 435 and the second assembly groove 434 can limit the rotation angle of the rotating cylinder 412 and the rotating rod 411 thereon.

[0079] Preferably, as Figure 13As shown, the limiting disc 435 is an arc-shaped moment plate. The arc-shaped moment plate radially includes two sets of obliquely opposite ends, where one set of ends is the limiting angle 4352 and the other set of ends is the rotating arc 4353. When the arc-shaped moment plate rotates in the second assembly groove 434, the limiting angle 4352 can abut against the inner side wall of the second assembly groove 434 to limit the rotation angle of the rotating rod 411. The limiting angle 4352 of the arc-shaped moment plate serves to limit the rotation angle of the rotating rod 411, while the rotating arc 4353 of the arc-shaped moment plate allows the rotating rod 411 to rotate freely within a certain angle range. Through the abutment of the limiting angle 4352, the excessive rotation of the rotating rod 411 is effectively prevented, ensuring the reliability of the seal. The design of the limiting disc 435 helps to reduce wear and improve the durability of the entire limiting mechanism. The design of the limiting disc 435 facilitates inspection and maintenance, helping to detect and solve problems in a timely manner. Specifically, the limiting mechanism limits the rotation angle of the rotating cylinder 412 and the rotating rod 411 thereon to ninety degrees.

[0080] Preferably, a limiting mechanism is provided in each assembly housing 430: The limiting mechanism in each assembly housing 430 helps to improve the effect of preventing the excessive rotation of the rotating rod 411. Of course, the limiting mechanism can also be provided only in one assembly housing 430.

[0081] Preferably, as Figures 10 to 12 shown, the airtight pressing device further includes a connecting vertical plate 440. The connecting vertical plate 440 is erected in the door leaf 200 and fixedly connected to the inner side wall of the door leaf 200. All the assembly housings 430 are fixedly connected to a connecting vertical plate 440. All the assembly housings 430 are fixedly connected to a connecting vertical plate 440, achieving the centralized fixation of the assembly housings 430, improving the structural stability of the airtight pressing device, and providing a solid support for the assembly housings 430. The assembly housings 430 are fixed on the unified connecting vertical plate 440, which helps to keep the assembly housings 430 arranged neatly, ensuring the consistency and coordination of the airtight mechanism 410. Specifically, the connecting vertical plate 440 is a concave plate, and the opposite two side edges of the concave plate are fixedly connected to the inner side wall of the door leaf 200 to increase the contact area between the connecting vertical plate 440 and the door leaf 200 and improve the stability of the connecting vertical plate 440.

[0082] Preferably, as Figure 12 shown, the airtight pressing device further includes a connecting vertical block 450. The connecting vertical block 450 is erected in the door frame 100 and fixedly connected to the inner side wall of the door frame 100. The sealing block 420 is fixedly connected to the door frame 100 and the connecting block therein. The connecting vertical block 450 provides a solid support structure for the sealing block 420, enhancing the stability of the sealing block 420.

[0083] Preferably, as Figures 10 to 13As shown, a first assembly groove 431 is provided in the assembly housing 430, a gear 432 is rotatably installed in the first assembly groove 431, and a rack 433 passes through the first assembly groove 431. By installing the gear 432 in the first assembly groove 431 and allowing the rack 433 meshing with the gear 432 to pass through the first assembly groove 431, the space inside the assembly housing 430 can be utilized more effectively, optimizing the overall layout. The installation method of the gear 432 and the rack 433 helps to improve the stability of the entire airtight mechanism 410 and reduce the transmission error caused by improper installation. Specifically, the part of the above-mentioned rotary cylinder 412 passing through the gear 432 and the limiting disc 435 is the driving rod 4121. The gear 432 and the limiting disc 435 are provided with mating holes 4351 for the driving rod 4121 to pass through. The cross-sections of the mating holes 4351 and the driving rod 4121 are arc-shaped squares. One set of opposite sides of the arc-shaped square is straight, and the other set of opposite sides is arc-shaped. The cross-sections of the mating holes 4351 and the driving rod 4121 can also be set as other polygons so that the driving rod 4121 can drive the gear 432 and the limiting disc 435 to rotate.

[0084] Preferably, as Figure 1 、 Figure 2 and Figure 12 shown, the airtight pressing device includes three airtight mechanisms 410 and three sealing blocks 420. The three airtight mechanisms 410 are, from top to bottom, the first airtight mechanism 410, the second airtight mechanism 410, and the third airtight mechanism 410. For the second airtight mechanism 410, a handle 4112 is provided at the other end of its rotating rod 411. The rotating rods 411 of the three airtight mechanisms 410 are located on the same side of the door leaf 200. On the other side of the door leaf 200, there is also a rotating rod 411 and a rotary cylinder 412. The rotary cylinder 412 on the other side of the door leaf 200 is connected to the gear 432 of the second airtight mechanism 410. The rotating rod 411 passes through the outer end of the rotary cylinder 412 and is fixed by a locking screw. Handles 4112 are provided on the rotating rods 411 of the rotary cylinders 412 at both ends of the second airtight mechanism 410, facilitating the staff to operate the rotation of the rotating rod 411 on both sides of the door leaf 200.

[0085] Refer to Figure 1 、 Figure 2 、 Figure 14 、 Figure 15 、 Figure 16 、 Figure 17 、 Figure 18 、 Figure 19 and Figure 20 together, the laboratory door further includes a hinge connecting member, which includes a first hinge block 510, a second hinge block 520, an embedding block 530, and a central rod;

[0086] A side groove 521 for the embedding block 530 to be embedded is provided on the side wall of the second hinge block 520, and the side groove 521 is detachably connected to the second hinge block 520;

[0087] The central rod member includes a hinged stud 540 and two stacked adjusting plates 560 threadedly connected to its outer wall. The first hinged block 510 and the second hinged block 520 are respectively rotatably connected to both ends of the hinged stud 540. The two adjusting plates 560 are located between the first hinged block 510 and the second hinged block 520 and respectively...

[0088] In this embodiment, the adjusting plate 560 in the hinged connecting member is threadedly connected to the hinged stud 540. When the adjusting plate 560 is rotated, it moves up or down along the axial direction of the hinged stud 540. When the adjusting plate 560 moves up or down, the tightness of its contact with the first hinged block 510 or the second hinged block 520 can be adjusted to adapt to different installation requirements and tighten any looseness that occurs after long-term use. The two components to be hinged are respectively fixedly connected to the first hinged block 510 and the embedding block 530. Then, the embedding block 530 is embedded in the second hinged block 520 connected to the first hinged block 510, and the embedding block 530 is connected to the second hinged block 520. There is no need to directly fixedly connect the connected first hinged block 510 and second hinged block 520 to the two components to be hinged, which is easier to assemble and disassemble, facilitating maintenance and component replacement. The hinged connecting member can distribute forces more evenly, reducing stress concentration and potential damage to the components. At the same time, it reduces the direct contact and friction between the hinged connecting member and the components, improving the overall load-bearing capacity of the hinged connecting member, preventing the sinking and offset of the hinged components, and extending the service life of the hinged connecting member.

[0089] Preferably, as Figures 14 to 20As shown, the central rod also includes a central axis 570 and two limiting end plates 550. The first hinge block 510 and the second hinge block 520 are both provided with a connecting through hole 52 for the hinge stud 540 to pass through. The central axis 570 of the hinge stud 540 is provided with a hollow space for the central axis 570 to pass through. Both ends of the central axis 570 are detachably connected with a limiting end plate 550. The limiting end plate 550 is in conflict with one end of the first hinge block 510 and the second hinge block 520 away from the adjustment plate 560. The central axis 570 of the central rod and the two limiting end plates 550 are for the hinge stud 540 and the first hinge block 510 and the second hinge block 520 thereon. 0 provides stable support and restriction, so that the first hinge block 510 and the second hinge block 520 can be stably rotatably connected to the hinge stud 540, and the first hinge block 510 and the second hinge block 520 are both provided with a connecting through hole 52 for the hinge stud 540 to pass through and contact, thereby increasing the contact area between the first hinge block 510, the second hinge block 520 and the hinge stud 540, thereby improving the overall stability and load-bearing capacity of the hinged connection; and the central axis 570, the limiting end plate 550, the hinge stud 540, the first hinge block 510 and the second hinge block 520 can be detachably connected together, which is convenient for separate production, assembly, maintenance or replacement.

[0090] Preferably, if Figures 14 to 20 As shown, the hinge stud 540 is a two-part type, and the two-part hinge stud 540 is respectively located in the connecting through hole 52 of the first hinge block 510 and the second hinge block 520. The first hinge block 510 and the hinge stud 540 in the connecting through hole 52 and the second hinge block 520 and the hinge stud 540 in the connecting through hole 52 are correspondingly provided with a positioning screw hole 53, and a positioning screw 54 is detachably connected to the positioning screw hole 53; the two-part hinge stud 540 allows for more flexible installation and adjustment, and the positioning screw 54 can be screwed into the first hinge block 510 and the positioning screw 53 of the hinge stud 540 therein. The screw hole 53 and the positioning screw 54 can also be screwed into the positioning screw hole 53 of the first hinge block 510 and the hinge stud 540 therein, so as to realize the precise positioning and stable fixation of the first hinge block 510 and the second hinge block 520 and the hinge stud 540 therein, and reduce the loosening caused by vibration or impact during use; the two-section hinge stud 540 and the positioning screw 54 in the positioning screw hole 53 help to disperse the force, thereby improving the durability and load-bearing capacity of the entire hinged connection; the positioning screw hole 53 and the positioning screw 54 are detachably connected, so as to facilitate adjustment or replacement when necessary.

[0091] Preferably, if Figure 14 , Figure 15 as well as Figure 20 As shown, the outer edge of the adjustment plate 560 is hexagonal, which makes it convenient to rotate the adjustment plate 560 using a wrench or other tools.

[0092] Preferably, ifFigure 14 , Figure 15 and Figure 20 As shown, screw holes for threaded connection with bolts and studs are respectively provided on the top side and the bottom side of the central shaft 570, and perforations for the bolts and studs to pass through are provided on the limiting end plate 550; the limiting end plate 550 is detachably connected to both ends of the central shaft 570 through bolts, which is firm, reliable, and convenient for installation and disassembly.

[0093] Preferably, as Figure 14 and Figure 19 shown, screw holes for threaded connection with bolts and studs are provided on the side wall of the first hinge block 510; the second hinge block 520 is detachably connected to the component to be hinged through bolts, which is firm, reliable, and convenient for installation and disassembly.

[0094] Preferably, as Figures 14 to 18 shown, the embedding block 530 is a concave block, and the concave block includes a middle block and free blocks protruding from both ends of the middle block. Screw holes for connection with bolts are provided on the two side walls of the two free blocks opposite to the side grooves 521; the embedding block 530 contacts the inner side wall of the side groove 521 of the second hinge block 520 through the free blocks thereon, and the two are connected through bolts. The contact area is large, the connection is firm and reliable, and it is convenient for installation and disassembly.

[0095] Preferably, as Figure 18 shown, a plurality of strip-shaped grooves 531 for bolts and studs to pass through are provided on the middle block; it is convenient to connect the embedding block 530 with the component to be hinged through bolts, and the position of the embedding block 530 can be finely adjusted; specifically, the above-mentioned embedding block 530 or the first hinge block 510 can also be directly welded to the component to be hinged.

[0096] Specifically, the above-mentioned first hinge block 510, second hinge block 520, embedding block 530, hinge stud 540, limiting end plate 550, adjusting plate 560 and central shaft 570 can all be made of stainless steel.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A door frame, characterized in that, It includes a concave main frame and a sub-frame; The main frame includes a main top column and main left and right columns connected to its left and right ends respectively. Plug-in structures are provided at the joints of the main top column with the main left column and the main right column; the sub-frame includes a sub-top column and sub-left and right columns connected to its left and right ends respectively. Plug-in structures are provided at the joints of the sub-top column with the sub-left column and the sub-right column; The sub-frame is sleeved outside the main frame, and an installation mechanism for inserting and restricting the sub-frame is fixedly provided on the outer side wall of the main frame.

2. A door frame according to claim 1, characterized in that, The installation mechanism includes a number of restricting baffles fixed on the main top column, main left column and main right column. A gap for inserting the sub-top column, sub-left column or sub-right column is formed between the restricting baffle and the outer side wall of the main frame.

3. A door frame according to claim 2, characterized in that, The restricting baffle is a concave plate, and the concave plate includes opposing support plates, and an L-shaped adaptation groove is provided on the support plates.

4. A door frame according to claim 3, characterized in that, The concave plate is welded to the main top column, main left column and main right column.

5. A door frame according to claim 1, characterized in that, Door frames are fixedly connected to the sides of the main frame and the sub-frame facing away from each other.

6. A door frame according to claim 5, characterized in that, The door frame on the main frame includes extension plates fixedly connected to the main top column, main right column and main left column respectively; the door frame on the sub-frame includes extension plates fixedly connected to the sub-top column, sub-right column and sub-left column respectively.

7. A door frame according to claim 1, characterized in that, The plug-in structure includes a perforated plate protruding and a first plug block, and a corresponding hole for inserting the first plug block is formed on the perforated plate.

8. A door frame according to claim 1, characterized in that, The main frame further includes a main bottom column, and the left and right ends of the main bottom column are respectively connected to the bottoms of the main left column and the main right column.

9. A door frame according to claim 8, characterized in that, Sockets are formed at the bottoms of the opposite sides of the main left column and the main right column, and second plug blocks protruding from the left and right ends of the main bottom column are inserted into the sockets.

10. A laboratory door, characterized in that, It includes a door frame according to any one of claims 1 to 8.

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