Airtight pressing device and laboratory door

Abstract

The utility model relates to the technical field of sealing equipment, in particular to an airtight pressing device and a laboratory door, a rotating rod rotates anticlockwise by taking a rotating drum as a center, a rolling wheel firstly rolls upwards along an inclined plane and finally rolls to a vertical plane in the process, and the rolling wheel is subjected to outward force of the vertical plane, so that a door crack is effectively reduced; when the rolling wheels rotate, the gears are driven to rotate, due to the fact that the gears are meshed with the racks, the multiple racks are connected together through the vertical rods, and after all the rolling wheels are matched with the corresponding sealing blocks, the sealing performance between the door leaf and the door frame is further improved; the limiting mechanism can effectively limit the rotating angle of the rotating rod, the rolling wheel is prevented from rolling out of the vertical face in the direction deviating from the inclined face, the situation of excessive rotation is avoided, and it is guaranteed that the rolling wheel and the sealing block are always effectively matched; and through the design of the limiting mechanism, a worker does not need to pay much attention to the rotating force and angle during use, the operation process is simplified, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing equipment, in particular to an airtight pressing device 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, uneven door frames, and loose door seams. In order to improve the sealing performance of the laboratory door, first, doors with better characteristics such as corrosion resistance, high temperature resistance, and fire resistance can be used, such as steel doors and stainless steel doors, which 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 seam, such as installing a sealing strip made of rubber sealing strip, silicone sealing strip, etc. 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, regular inspections and maintenance should be paid attention to, and damaged or aged parts should be replaced in time to ensure that the laboratory door is always in good condition; for example, a laboratory door airtight device disclosed in publication number CN202321517491.8 further improves the sealing performance of the laboratory door by providing an airtight device. In the above patent, when the staff rotates the rotating rod, all the rotating rods can be driven to rotate, so that multiple rolling wheels roll from the inclined surface of the sealing block to the vertical surface of the sealing block, thereby making the door leaf and the door frame closer; however, when rotating the rotating rod, the rolling wheels on the rotating rod may roll out of the vertical surface of the sealing block from the direction away from the inclined surface of the sealing block, forming an over-rotation situation, resulting in the failure of the cooperation between the rolling wheels and the sealing block, affecting the normal use of the laboratory door, and causing the staff to learn, be proficient in, and pay attention to the rotation force and angle when rotating the rotating rod, and the practicability needs to be improved.

[0003] Based on this, the applicant considers designing an airtight pressing device and a laboratory door that can improve practicability. 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 an airtight pressing device and a laboratory door that can improve practicability.

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

[0006] An airtight pressing device, which includes a door leaf, a door frame and an airtight pressing device. One side of the door leaf is hinged to one side of the door frame, and the other side of the door leaf is cooperated with the other side of the door frame through the airtight pressing device. The airtight pressing device includes a plurality of airtight mechanisms, a plurality of sealing blocks and a limiting mechanism. The plurality of sealing blocks are arranged on the other side of the door frame from top to bottom. The lower half of the outer side of the sealing block is set as an inclined surface, and the upper half is a vertical surface. A plurality of assembly shells are arranged in the door leaf from top to bottom. One airtight mechanism corresponds to one assembly shell and one sealing block. The airtight mechanism includes a rotating rod, a rotating cylinder, a gear and a rack. The rack slides up and down in the corresponding assembly shell, and the plurality of racks are connected together by a vertical rod. The gear is rotatably arranged in the assembly shell, and the gear meshes with the rack. The rotating cylinder is arranged on the outer surface of the door leaf. The inner end of the rotating cylinder penetrates the door leaf and the assembly shell and then is connected to the gear. The rotating rod is arranged through the outer end of the rotating cylinder. One end of the rotating rod facing the sealing block is provided with a rolling wheel. When sealing, the rotating rod rotates around the rotating cylinder to make the rolling wheel roll from the inclined surface to the vertical surface. The limiting mechanism is used to limit the rotation angle of the rotating rod and prevent the rolling wheel on the rotating rod from rolling out of the vertical surface in the direction away from the inclined surface.

[0007] The working principle and advantages of an airtight pressing device and a laboratory door in this technical solution are as follows:

[0008] The staff rotates the rotating rod, and the rotating rod rotates counterclockwise around the rotating cylinder. In this process, the rolling wheel first rolls upward along the inclined surface and finally rolls to the vertical surface. The rolling wheel receives the outward force from the vertical surface, thereby effectively reducing the door gap. When rotating, the gear is driven to rotate. Because the gear meshes with the rack, and the plurality of racks are connected together by a vertical rod, the staff can drive all the rotating rods to rotate by acting on one of the rotating rods. After all the rolling wheels are all in cooperation with the corresponding sealing blocks, the sealing performance between the door leaf and the door frame is further improved. The limiting mechanism can effectively limit the rotation angle of the rotating rod, prevent the rolling wheel from rolling out of the vertical surface in the direction away from the inclined surface, avoid the situation of excessive rotation, and ensure that the cooperation between the rolling wheel and the sealing block is always effective. Through the design of the limiting mechanism, the staff does not need to pay too much attention to the rotation strength and angle during use, simplifies the operation process, and improves the practicability.

[0009] Further, the limiting mechanism is arranged in the assembly shell. The limiting mechanism includes a second assembly groove opened in the assembly shell and a limiting disk located therein. The limiting disk is connected to the inner end of the rotating cylinder.

[0010] Further, the limiting disk is a plate with an arc moment. The plate with an arc moment radially includes two groups of obliquely opposite ends. One group of ends is a limiting angle, and the other group of ends is a rotating arc. When the plate with an arc moment rotates in the second assembly groove, the limiting angle can contact the inner side wall of the second assembly groove to limit the rotation angle of the rotating rod.

[0011] Furthermore, the limiting mechanism is arranged in each of the assembly shells.

[0012] Furthermore, the airtight pressing device further includes a connecting vertical plate which is vertically arranged inside the door leaf and fixedly connected to the inner side wall of the door leaf, and all the assembly shells are fixedly connected to one of the connecting vertical plates.

[0013] Furthermore, the airtight pressing device further includes a connecting vertical block which is vertically arranged inside the door frame and fixedly connected to the inner side wall of the door frame, and the sealing block is fixedly connected to the door frame and the connecting block inside it.

[0014] Furthermore, a first assembly groove is formed in the assembly shell, the gear is rotatably installed in the first assembly groove, and the rack passes through the first assembly groove.

[0015] Furthermore, the airtight pressing device includes three airtight mechanisms and three sealing blocks; the three airtight mechanisms are the first airtight mechanism, the second airtight mechanism, and the third airtight mechanism in sequence from top to bottom. For the second airtight mechanism, a handle is provided at the other end of its rotating rod; the rotating rods of the three airtight mechanisms are located on the same side of the door leaf, and a rotating rod and a rotating cylinder are further provided on the other side of the door leaf. The rotating cylinder on the other side of the door leaf is connected to the gear of the second airtight mechanism; the rotating rod passes through the outer end of the rotating cylinder and is fixed by a locking screw.

[0016] A laboratory door includes the above-mentioned airtight pressing device.

[0017] Furthermore, it further includes a sealing structure which includes a first sealing structure and a second sealing structure; the first sealing structure includes a first installation groove provided on the side edge of the door frame and a first elastic sealing body arranged therein; when the door leaf on the door frame is closed, the side edge of the door leaf abuts against and presses the first elastic sealing body; the second sealing structure includes a protruding portion provided on the side edge of the door frame, a second installation groove provided on the side edge of the door leaf, and a second elastic sealing body arranged therein; when the door leaf on the door frame is closed, the protruding portion on the door frame extends into the second installation groove, abuts against and presses the second elastic sealing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure diagram of the laboratory door according to the embodiment of the present utility model Figure 1 ;

[0019] Figure 2 is a schematic three-dimensional structure diagram of the laboratory door according to the embodiment of the present utility model Figure 2 ;

[0020] Figure 3 is a schematic top view sectional structure diagram of the laboratory door according to the embodiment of the present utility model Figure 1 ;

[0021] Figure 4 is Figure 3 The enlarged schematic view of part A in

[0022] Figure 5 is Figure 4 The enlarged schematic view of part C in

[0023] Figure 6 is Figure 4 The enlarged schematic view of part D in

[0024] Figure 7 is Figure 3 The enlarged schematic view of part B in

[0025] Figure 8 The three - dimensional structure schematic diagram of the first elastic seal body in the embodiment of the utility model;

[0026] Figure 9 The three - dimensional structure schematic diagram of the second elastic seal body in the embodiment of the utility model;

[0027] Figure 10 The top - view sectional structure schematic diagram of the laboratory door in the embodiment of the utility model Figure 2 ;

[0028] Figure 11 is Figure 10 The enlarged schematic view of part E in

[0029] Figure 12 The three - dimensional structure schematic diagram of the airtight pressing device in the embodiment of the utility model;

[0030] Figure 13 The three - dimensional structure schematic diagram of the assembly housing and restrictions, etc. in the embodiment of the utility model;

[0031] Figure 14 The three - dimensional structure schematic diagram of the hinge connecting piece in the embodiment of the utility model Figure 1 ;

[0032] Figure 15 The three - dimensional structure schematic diagram of the hinge connecting piece in the embodiment of the utility model Figure 2 ;

[0033] Figure 16 The sectional structure schematic diagram of the hinge connecting piece in the embodiment of the utility model Figure 1 ;

[0034] Figure 17 The three - dimensional structure schematic diagram of the second hinge block in the embodiment of the utility model;

[0035] Figure 18 The three - dimensional structure schematic diagram of the embedding block in the embodiment of the utility model;

[0036] Figure 19 Schematic three - dimensional structure diagram of the first hinge block in the embodiment of the present utility model;

[0037] Figure 20 Schematic three - dimensional structure diagram of the hinge stud, central shaft and adjusting plate in the embodiment of the present utility model;

[0038] Figure 21 Schematic three - dimensional structure diagram of the door frame in the embodiment of the present utility model;

[0039] Figure 22 is Figure 21 Enlarged schematic diagram at position F in;

[0040] Figure 23 Schematic cross - sectional structure diagram of the door frame in the embodiment of the present utility model;

[0041] Figure 24 Explosion schematic diagram of the main frame in the embodiment of the present utility model;

[0042] Figure 25 Explosion schematic diagram of the sub - frame in the embodiment of the present utility model;

[0043] In the above - mentioned drawings: 100, door frame; 101, protruding part; 200, door leaf; 201, window hole;

[0044] 310, first installation groove; 320, first elastic seal; 321, first abutting tongue; 322, first inner cavity; 323, protruding hook; 3231, second inner cavity; 340, second installation groove; 350, second elastic seal; 351, second abutting tongue; 352, third inner cavity; 360, installation ring; 361, T - shaped ring; 362, first ring groove; 370, first elastic seal ring; 371, annular cavity; 380, transparent plate; 390, connecting ring; 391, second ring groove; 392, second elastic seal ring;

[0045] 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 disk; 4351, mating hole; 4352, limiting angle; 4353, rotating arc; 440, connecting vertical plate; 450, connecting block;

[0046] 510, first hinge block; 520, second hinge block; 521, side groove; 530, embedding block; 531, strip - shaped groove; 540, hinge stud; 550, limiting end plate; 560, adjusting plate; 570, central shaft; 52, connecting through - hole; 53, positioning screw hole; 54, positioning screw;

[0047] 610, main frame; 611, main top column; 612, main right column; 613, main left column; 614, main bottom column; 615, limiting baffle; 6151, adapting 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 mode

[0048] In the description of the present utility model, it should be understood that the orientation or positional relationship 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. is based on the orientation or positional relationship shown in the drawings. It is 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 therefore should not be construed as a limitation to the present utility model.

[0049] Refer to together Figure 1 , Figure 2 , Figure 10 , Figure 11 , Figure 12 and Figure 13As shown in the figure, this embodiment provides an airtight pressing device, which includes a door leaf 200, a door frame 100 and an airtight pressing device. One side of the door leaf 200 is hinged to one side of the door frame 100, and the other side of the door leaf 200 is cooperated 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. The 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 and a rack 433. The rack 433 is slidably matched with the corresponding assembly shell 430 up and down. The plurality of racks 433 are connected together by a vertical rod. The gear 432 is rotatably arranged in the assembly shell 430. The gear 432 meshes with the rack 433. The rotating cylinder 412 is arranged on the outer surface of the door leaf 200. The inner end of the rotating cylinder 412 passes through the door leaf 200 and the assembly shell 430 and then is connected to the gear 432. The rotating rod 411 is arranged through the outer end of the rotating cylinder 412. One end of the rotating rod 411 facing the sealing block 420 is provided with a rolling wheel 4111. When sealing, the rotating rod 411 rotates around the rotating cylinder 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, so that the rolling wheel 4111 on the rotating rod 411 cannot roll out of the vertical surface 422 from the direction away from the inclined surface 421.

[0050] In this embodiment, the staff rotates the rotating rod 411, and 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 to the vertical surface 422. The rolling wheel 4111 receives an outward force from the vertical surface 422, thereby effectively reducing the door gap. When rotating, the gear 432 is driven to rotate. Because the gear 432 meshes with the rack 433 and the plurality of racks 433 are connected together by a vertical rod, the staff can drive all the rotating rods 411 to rotate by acting on one of the rotating rods 411. After all the rolling wheels 4111 are all matched 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 from 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.

[0051] Preferably, as Figures 10 to 13As shown, the limiting mechanism is arranged inside the assembly housing 430. The limiting mechanism includes a second assembly groove 434 opened inside 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. Arranging the limiting mechanism inside the assembly housing 430 is beneficial to keeping the appearance of the door leaf 200 clean. At the same time, the operating 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.

[0052] Preferably, as Figure 13 shown, the limiting disk 435 is an arc-shaped plate with moment. The arc-shaped plate with moment radially includes two groups of obliquely opposite ends. One group of ends is the limiting angle 4352, and the other group of ends is the rotating arc 4353. When the arc-shaped plate with moment 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 plate with moment plays a role in limiting the rotation angle of the rotating rod 411, while the rotating arc 4353 of the arc-shaped plate with moment 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 disk 435 helps to reduce wear and improve the durability of the entire limiting mechanism. The design of the limiting disk 435 is convenient for 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.

[0053] Preferably, a limiting mechanism is arranged 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 arranged in only one assembly housing 430.

[0054] Preferably, as Figures 10 to 12As shown, the airtight pressing device further includes a connecting vertical plate 440 which is vertically arranged inside 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 being fixedly connected to a connecting vertical plate 440 realizes the centralized fixation of the assembly housings 430, improves the structural stability of the airtight pressing device, and provides a solid support for the assembly housings 430. The assembly housings 430 being fixed on the unified connecting vertical plate 440 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 sides 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.

[0055] Preferably, as Figure 12 shown, the airtight pressing device further includes a connecting vertical block 450 which is vertically arranged inside 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 inside it. The connecting vertical block 450 provides a solid support structure for the sealing block 420 and enhances the stability of the sealing block 420.

[0056] Preferably, as Figures 10 to 13 shown, a first assembly groove 431 is formed inside the assembly housing 430. The gear 432 is rotatably installed in the first assembly groove 431, and the 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 to optimize 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 rotating 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 a mating hole 4351 for the driving rod 4121 to pass through. The cross-section of the mating hole 4351 and the driving rod 4121 is a square with an arc. One group of opposite sides of the square with an arc is a straight line, and the other group of opposite sides is an arc. The cross-section of the mating hole 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.

[0057] Preferably, as Figure 1 、 Figure 2 and Figure 12As shown in the figure, 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 rotating cylinder 412. The rotating 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 rotating cylinder 412 and is fixed by a locking screw. Handles 4112 are provided on the rotating rods 411 of the rotating 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.

[0058] This embodiment also provides a laboratory door, which includes the above-mentioned airtight pressing device.

[0059] Refer to Figures 1 to 9 simultaneously. The laboratory door also includes a sealing structure, which includes a door frame 100 and a door leaf 200 hinged therein. It also includes a first sealing structure and a second sealing structure.

[0060] 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 provided 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.

[0061] 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 provided 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.

[0062] In this embodiment, when the door leaf 200 on the door frame 100 is closed, the side of the door leaf 200 contacts and presses the first elastic seal 320 in the first installation groove 310. The protruding part 101 on the door frame 100 extends into the second installation groove 340, contacts and presses 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. When the door leaf 200 is closed, the protruding part 101 on the door frame 100 can contact the second elastic seal 350 more deeply, 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.

[0063] 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 deeper contact with the door leaf 200 when the door leaf 200 is closed, increasing the sealing tightness, and at the same time preventing the door leaf 200 from directly contacting 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.

[0064] 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.

[0065] Preferably, as Figures 1 to 6As shown, the door frame 100 is rectangular, and a first mounting groove 310 is provided on each of the four side edges of the door frame 100. The four first mounting grooves 310 communicate with each other and each is provided with a first elastic seal 320. The door frame 100 is designed to be rectangular, which is a common shape for laboratory doors and facilitates installation and sealing. There are mounting grooves at the top, bottom, left, and right of the door frame 100, providing installation space for the seals. The four first mounting grooves 310 communicate with each other, and each mounting groove is provided with a first elastic seal 320, which can provide all-round sealing.

[0066] Preferably, as Figures 1 to 6 shown, the door leaf 200 is rectangular, and a second mounting groove 340 is provided on each of the four side edges of the door leaf 200. The four second mounting grooves 340 communicate with each other and each is provided with a second elastic seal 350. Four protrusions corresponding to the four second mounting grooves 340 are provided on the door frame 100. The door leaf 200 is designed to be rectangular, matching the shape of the door frame 100, ensuring overall coordination and sealing. A second mounting groove 340 is provided on each side edge of the door leaf 200, corresponding to the four side edges of the door frame 100, providing space for installing the second elastic seal 350. The four second mounting grooves 340 communicate with each other, and each second mounting groove is provided with a second elastic seal 350, which can provide all-round sealing. Four protrusions corresponding to the four second mounting grooves 340 are provided on the door frame 100, interacting with the second elastic seal 350 when the door leaf 200 is closed to enhance the sealing effect. Specifically, the four protrusions on the door frame 100 are connected to form a ring to provide a sealing effect.

[0067] Preferably, as Figure 8 and Figure 9 shown, the four second elastic seals 350 are integrally formed. The integrally formed second elastic seals 350 ensure the integrity of the seals, avoiding possible problems of poor sealing at the joints of multiple parts. The integrally formed second elastic seals 350 reduce seams and connection points, providing overall durability and service life. Specifically, the four first elastic seals 320 are also integrally formed.

[0068] Preferably, as Figure 1 and Figure 2 shown, a transparent window is provided on the door leaf 200. The transparent window allows people outside the laboratory to observe the situation inside the laboratory without opening the door and confirm the internal safety status.

[0069] Preferably, as Figure 1 、 Figure 2 、 Figure 3 and Figure 7As shown, 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 edges of the transparent plates 380 are located between the T-shaped ring 361 and the connecting rings 390. During installation, the connecting rings 390 are connected to the installation ring 360, and the T-shaped rings 361 on the connecting rings 390 and the installation ring 360 clamp and fix the edges of the transparent plates 380, and a transparent window is formed through the center of the transparent plates 380 and the window hole 201.

[0070] 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 plates 380, preventing gas, liquid or other substances from leaking through the gap between the transparent plates 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 plates 380 and the connecting rings 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.

[0071] Refer to Figure 1 , Figure 2 , Figure 14 , Figure 15 , Figure 16 , Figure 17 , Figure 18 , Figure 19 and Figure 20 as well, 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.

[0072] A side groove 521 for the embedding block 530 to be embedded is formed on the side wall of the second hinge block 520, and the side groove 521 is detachably connected to the second hinge block 520.

[0073] The central rod includes a hinge stud 540 and two stacked adjusting plates 560 threadedly connected to its outer wall. The first hinge block 510 and the second hinge block 520 are respectively rotatably connected to both ends of the hinge stud 540. The two adjusting plates 560 are located between the first hinge block 510 and the second hinge block 520 and respectively...

[0074] In this embodiment, the adjusting plate 560 in the hinge connecting member is threadedly connected to the hinge stud 540. When the adjusting plate 560 is rotated, it moves up or down along the axial direction of the hinge stud 540. When the adjusting plate 560 moves up or down, the tightness of its contact with the first hinge block 510 or the second hinge block 520 can be adjusted to adapt to different installation requirements and tighten the looseness that occurs after long-term use. The two components to be hinged are respectively fixedly connected to the first hinge block 510 and the embedding block 530. Then, the embedding block 530 is embedded in the second hinge block 520 connected to the first hinge block 510, and the embedding block 530 is connected to the second hinge block 520. There is no need to directly fixedly connect the connected first hinge block 510 and the second hinge block 520 to the two components to be hinged, which is easier to assemble and disassemble, convenient for maintenance and component replacement, enables the hinge connecting member to distribute force more evenly, reduces stress concentration and potential damage of the components, and at the same time reduces the direct contact and friction between the hinge connecting member and the components, improves the overall load-bearing capacity of the hinge connecting member, prevents sinking and offset of the hinged components, and extends the service life of the hinge connecting member.

[0075] Preferably, as Figures 14 to 20 shown, the central rod further includes a central shaft 570 and two limiting end plates 550. Both the first hinge block 510 and the second hinge block 520 are provided with connection through-holes 52 for the hinge stud 540 to pass through. The central axis of the hinge stud 540 is provided with a hollow space for the central shaft 570 to pass through. One limiting end plate 550 is detachably connected to each end of the central shaft 570. The limiting end plate 550 abuts against one end of the first hinge block 510 and the second hinge block 520 facing away from the adjusting plate 560. The central shaft 570 and the two limiting end plates 550 of the central rod provide stable support and limitation for the hinge stud 540 and the first hinge block 510 and the second hinge block 520 thereon, enabling the first hinge block 510 and the second hinge block 520 to be stably rotatably connected to the hinge stud 540. Moreover, both the first hinge block 510 and the second hinge block 520 are provided with connection through-holes 52 for the hinge stud 540 to pass through and contact, 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 hinge connecting member. And the central shaft 570, the limiting end plates 550, the hinge stud 540, the first hinge block 510 and the second hinge block 520 are detachably connected together, which is convenient for separate production, assembly, maintenance or replacement.

[0076] Preferably, as Figures 14 to 20 shown, the articulated stud 540 is in two sections. The two-section articulated stud 540 is respectively located in the connection perforations 52 of the first articulated block 510 and the second articulated block 520. Positioning screw holes 53 are correspondingly provided in the first articulated block 510 and the articulated stud 540 in its connection perforation 52, and the articulated stud 540 in the second articulated block 520 and its connection perforation 52. A positioning screw 54 is detachably connected in the positioning screw hole 53; the two-section articulated stud 540 allows for more flexible installation and adjustment. The positioning screw 54 can be screwed into the positioning screw holes 53 of the first articulated block 510 and the articulated stud 540 therein together. The positioning screw 54 can also be screwed into the positioning screw holes 53 of the first articulated block 510 and the articulated stud 540 therein together, realizing the precise positioning and stable fixation of the first articulated block 510 and the second articulated block 520 and the articulated stud 540 therein, reducing looseness caused by vibration or impact during use; the two-section articulated stud 540 and the positioning screw 54 in the positioning screw hole 53 contribute to the dispersion of force, thereby improving the durability and load-bearing capacity of the entire articulated connection; the positioning screw hole 53 and the positioning screw 54 are detachably connected, facilitating adjustment or replacement when needed.

[0077] Preferably, as Figure 14 , Figure 15 and Figure 20 shown, the outer edge of the adjusting plate 560 is hexagonal; it is convenient to rotate the adjusting plate 560 by a wrench or other tools.

[0078] Preferably, as Figure 14 , Figure 15 and Figure 20 shown, threaded holes for threaded connection with bolt studs are respectively provided on the top and bottom sides of the central shaft 570. A perforation for the bolt stud to pass through is 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.

[0079] Preferably, as Figure 14 and Figure 19 shown, threaded holes for threaded connection with bolt studs are provided on the side wall of the first articulated block 510; the second articulated block 520 is detachably connected to the component to be articulated through bolts, which is firm, reliable, and convenient for installation and disassembly.

[0080] Preferably, as Figures 14 to 18As shown, the embedded block 530 is a concave block. The concave block includes a middle block and free blocks protruding from both ends of the middle block. Screw holes for bolt connection are provided on the two side walls of the two free blocks opposite to the side grooves 521. The embedded 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 by bolts. The contact area is large, the connection is firm and reliable, and it is convenient for installation and disassembly.

[0081] Preferably, as Figure 18 shown, a plurality of strip-shaped grooves 531 for the bolt studs to pass through are provided on the middle block; it is convenient to connect the embedded block 530 with the components to be hinged by bolts, and the position of the embedded block 530 can be finely adjusted; specifically, the above-mentioned embedded block 530 or the first hinge block 510 can also be directly welded to the components to be hinged.

[0082] Specifically, the above-mentioned first hinge block 510, second hinge block 520, embedded block 530, hinge stud 540, limiting end plate 550, adjusting plate 560 and central shaft 570 can all be made of stainless steel.

[0083] Referring together to Figure 1 、 Figure 2 、 Figure 21 、 Figure 22 、 Figure 23 、 Figure 24 and Figure 25 , the door frame of the laboratory door includes an inverted concave main frame 610 and a sub-frame 620;

[0084] 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 column 613 and the main right column 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 column 623 and the sub-right column 622;

[0085] The sub-frame 620 is sleeved on the outside of the main frame 610, and an installation mechanism for inserting the sub-frame 620 and restricting it is fixedly arranged on the outer side wall of the main frame 610.

[0086] In this embodiment, first, the main top column 611, the main left column 613, and the main right column 612 are connected together through a plug-in structure to form the main frame 610, and the auxiliary top column 621, the auxiliary left column 623, and the auxiliary right column 622 are connected together through a plug-in structure to form the auxiliary frame 620; then the auxiliary frame 620 is inserted into the installation structure on the main frame 610, so that the auxiliary frame 620 is sleeved outside the main frame 610 to form an integral body, thus completing the assembly; after that, the joints between the top column and the main left column 613 and the main right column 612, the joints between the auxiliary top column 621 and the auxiliary left column 623 and the auxiliary right column 622, and the contact places between the main frame 610 and the auxiliary frame 620 are welded and fixed to form the door frame 100; through the plug-in structures on the main frame 610 and the auxiliary 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 auxiliary frame 620 sleeved on the main frame 610, so that the auxiliary frame 620 is stably sleeved outside the main frame 620, and at the same time, the auxiliary 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 auxiliary 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.

[0087] Preferably, as Figures 21 to 25 shown, the installation structure includes a number of limiting baffles 615 fixed on the main top column 611, the main left column 613, and the main right column 612. A gap for inserting the auxiliary top column 621, the auxiliary left column 623, or the auxiliary 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 auxiliary frame 620, ensuring that the auxiliary frame 620 is correctly sleeved outside the main frame 610, while simplifying the assembly process and 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 auxiliary frame 620, contribute to the assembly of the main frame 610 and the auxiliary frame 620, and improve the rigidity and load-bearing capacity of the entire door frame 100 structure.

[0088] Preferably, as Figures 21 to 24 shown, the limiting baffle 615 is a concave plate, and the concave plate includes opposing 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 auxiliary frame 620, and can firmly clamp the auxiliary 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 auxiliary frame 620 is inserted into the gap, the support plates elastically deform to a certain extent as the auxiliary frame 620 is inserted, ensuring that the auxiliary frame 620 can be successfully inserted into the gap while allowing the support plates to closely contact the auxiliary frame 620.

[0089] Preferably, the concave plate is welded to the main top column 611, the main left column 613 and the main right column 612; the concave plate is firmly connected to the main frame 610.

[0090] Preferably, as Figures 21 to 25 shown, door jambs are fixedly connected to one side of the main frame 610 and the sub-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, the main right column 612 and the main left column 613 respectively; the door jamb on the sub-frame 620 includes extension plates 630 fixedly connected to the sub-top column 621, the sub-right column 622 and the sub-left column 623 respectively; the door jamb provides a unified outer cladding for the main frame 610 and the sub-frame 620, enhancing the overall sense of the door frame 100; the door jamb can provide an additional installation space cavity for sealing components, helping to improve the sealing effect between the door and the door frame 100; the door jamb can protect the edges of the door frame 100, reducing damage caused by impact or abrasion; the door jamb can cover the inner structure of the door frame 100, providing a neater and more beautiful appearance.

[0091] Preferably, as Figures 21 to 25 shown, the plug-in structure includes a perforated plate 641 protruding and a first plug 642; corresponding holes for the first plug 642 to insert are provided on the perforated plate 641; the first plug 642 can be conveniently inserted into the corresponding holes of the perforated plate 641, enabling precise fit and ensuring the stability and alignment of the connection;

[0092] Preferably, as Figure 21 and Figure 24 shown, the main frame 610 further includes a main bottom column 614, and 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, and 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 between the main bottom column 614 and 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, and 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.

[0093] 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 within the scope of the claims of the present invention.

Claims

1. An airtight pressing device, characterized in that, The invention comprises a door leaf, a door frame and an airtight pressing device, wherein one side of the door leaf is hingedly mounted on one side of the door frame, and the other side of the door leaf is matched with the other side of the door frame through the airtight pressing device. The airtight pressing device comprises a plurality of airtight mechanisms, a plurality of sealing blocks and a limiting mechanism. The plurality of sealing blocks are arranged on the other side of the door frame from top to bottom, the lower half of the outer side of the sealing block is set as an inclined surface, and the upper half is a vertical surface; a plurality of assembly shells are arranged from top to bottom in the door leaf, and one airtight mechanism corresponds to one assembly shell and one sealing block. The airtight mechanism comprises a rotating rod, a rotating cylinder, a gear and a rack, and the rack slides up and down to match the corresponding The invention relates to an assembly shell, a plurality of racks are connected together by a vertical rod, a gear is rotatably arranged in the assembly shell, the gear is meshed with the rack, a rotating drum is arranged on the outer surface of the door leaf, the inner end of the rotating drum passes through the door leaf and the assembly shell and is connected to the gear, a rotating rod is passed through the outer end of the rotating drum, and a rolling wheel is provided at one end of the rotating rod facing the sealing block. When sealing is performed, the rotating rod rotates with the rotating drum as the center so that the rolling wheel rolls from the inclined surface to the vertical surface; the limiting mechanism is used to limit the rotation angle of the rotating rod, so as to limit the rolling wheel on the rotating rod from rolling out of the vertical surface in the direction away from the inclined surface.

2. The airtight pressing device according to claim 1, characterized in that, The limiting mechanism is arranged in the assembly shell, and comprises a second assembly groove opened in the assembly shell and a limiting disk located therein, and the limiting disk is connected to the inner end of the rotating drum.

3. An airtight pressing device according to claim 2, characterized in that, The limiting disk is an arc-shaped moment plate, which radially includes two groups of obliquely opposite ends, one group of ends is a limiting angle, and the other group of ends is a rotation arc; when the arc-shaped moment plate rotates in the second assembly groove, the limiting angle can interfere with the inner side wall of the second assembly groove to limit the rotation angle of the rotating rod.

4. The airtight pressing device according to claim 2, wherein, The limiting mechanism is arranged in each of the assembly shells.

5. The airtight pressing device according to claim 1, characterized in that, The airtight pressing device also includes a connecting vertical plate, which is vertically arranged in the door leaf and fixedly connected to the inner side wall of the door leaf, and all the assembly shells are fixedly connected to one of the connecting vertical plates.

6. An airtight pressing device according to claim 1, characterized in that, The airtight pressing device also includes a connecting block, which is vertically arranged in the door frame and fixedly connected to the inner wall of the door frame. The sealing block is fixedly connected to the door frame and the connecting block therein.

7. An airtight pressing device according to claim 1, characterized in that, A first assembly groove is provided in the assembly housing, the gear is rotatably mounted in the first assembly groove, and the rack passes through the first assembly groove.

8. The airtight pressing device according to claim 1, wherein The airtight pressing device includes three airtight mechanisms and three sealing blocks; the three airtight mechanisms are respectively the first airtight mechanism, the second airtight mechanism and the third airtight mechanism from top to bottom, and for the second airtight mechanism, a handle is provided at the other end of its rotating rod; the rotating rods of the three airtight mechanisms are located on the same side of the door leaf, and a rotating rod and a rotating cylinder are also provided on the other side of the door leaf, and the rotating cylinder on the other side of the door leaf is connected to the gear of the second airtight mechanism; the rotating rod is passed through the outer end of the rotating cylinder and fixed by a locking screw.

9. A laboratory door, characterized in that, It comprises an airtight pressing device as described in any one of claims 1 to 8.

10. A laboratory door according to claim 9, characterized in that, It further includes a sealing structure, which includes a first sealing structure and a second sealing structure; the first sealing structure includes a first installation groove provided on the side edge of the door frame and a first elastic sealing body disposed therein; when the door leaf on the door frame is closed, the side edge of the door leaf abuts against and presses the first elastic sealing body; the second sealing structure includes a protruding portion provided on the side edge of the door frame, a second installation groove provided on the side edge of the door leaf, and a second elastic sealing body disposed therein; when the door leaf on the door frame is closed, the protruding portion on the door frame extends into the second installation groove, abuts against and presses the second elastic sealing body.

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