An air tight test chamber seal frame

Abstract

The utility model belongs to airtight room technical field, and disclose a kind of airtight test room sealing frame, including side frame, connecting frame and center frame, the side frame is symmetrically arranged in the both sides of center frame, the opposite side on the side frame is connected with center frame by connecting frame, the side of the side frame is equipped with door panel, the door panel is equipped with air blower, the inboard of the door panel is provided with closed mechanism, the closed mechanism includes connecting frame, driving motor, bidirectional screw rod, moving guide block and closed baffle, the side frame and center frame are all provided with plug-in boss, when assembling to airtight test room, the preliminary positioning of frame is realized by the cooperation of plug-in boss and slot, again in combination locking mechanism and the fixation of sealing baffle, both simplify assembly process, and the firmness of the connection of each part of frame can be guaranteed, effectively avoid the influence of test accuracy in the test process due to frame loosening.

Description

Technical Field

[0001] This utility model belongs to the field of airtight chamber technology, specifically an airtight test chamber sealing frame. Background Technology

[0002] In the field of airtightness testing, specialized airtightness testing chambers are required to provide a sealed environment that meets the requirements for testing. The sealing frame is the core component of the airtightness testing chamber. Its ease of assembly, connection strength, and overall sealing directly affect the use effect and testing accuracy of the testing chamber. The sealing frame of the airtightness testing chamber is mostly an integral structure or assembled through complex connectors. The integral structure is not convenient for transportation and subsequent maintenance, while the complex assembly method has the problems of cumbersome assembly process and long time consumption.

[0003] Meanwhile, a stainless steel airtight room with announcement number CN215212540U is also disclosed. It includes a frame, which is constructed from bent square tubes welded together. The frame has welded edging at all four ends. Both the frame and edging are processed using laser cutting and CNC bending. The edging is L-shaped. Corner edges are welded to all four sides of the frame's interior, with an angle of R40mm. These corner edges are connected to the edging by welding. A middle layer plate is welded to the center of each of the frame's four sides. C-channel steel is welded to both sides of the middle layer plate, and sealing plates are installed within each C-channel steel channel. These sealing plates are laser-welded to seal the C-channel steel. Sealing plates are welded to the top and bottom of the frame. The top and bottom sides of the frame's interior are surrounded by curved edges with an angle of R40mm. These curved edges are welded to the corner edges, frame corners, and sealing plates.

[0004] The aforementioned stainless steel airtight chamber requires welding to connect all components during use, which is inconvenient and affects assembly efficiency. Furthermore, airtightness testing chambers typically employ a blower-door method. A blower is installed on a sealed door to pressurize or depressurize the chamber, creating a pressure difference between the inside and outside. However, this requires manual sealing of the blower area, which is time-consuming and labor-intensive.

[0005] Therefore, a sealing frame for an airtight testing chamber is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a sealing frame for an airtight testing chamber. It has the advantages of simplifying the assembly process and ensuring a firm connection by using a locking mechanism that combines plug-in protrusions and slots with a sealing baffle, and also by using a sealing mechanism to conveniently close the blower position to improve the sealing effect.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sealing frame for an airtight testing chamber, comprising a side frame, a connecting frame, and a central frame. The side frames are symmetrically arranged on both sides of the central frame. Opposite sides of the side frames are connected to the central frame via the connecting frame. A door panel is installed on one side of the side frame, and a blower is installed on the door panel. A closing mechanism is provided on the inner side of the door panel. The closing mechanism includes a connecting frame, a drive motor, a two-way lead screw, a moving guide block, and a closing baffle. Insertion protrusions are provided on both the side frames and the central frame. Slots matching the insertion protrusions are provided at both ends of the connecting frame. A locking mechanism is provided on the inner wall of the connecting frame. A sealing baffle is provided on the outer wall of the connecting frame. The sealing baffle is connected to the side frame and the central frame respectively by bolts.

[0008] Preferably, the side frames are arranged in an inverted U-shape, and the central frame is an open rectangular structure.

[0009] Preferably, the connecting frame is fixed to the inside of the door panel, and the connecting frame is arranged on the upper and lower sides of the blower.

[0010] Preferably, the bidirectional lead screw is disposed in the upper connecting frame, one end of the bidirectional lead screw is connected to the output shaft of the drive motor, the movable guide block is connected to the bidirectional lead screw, one end of the movable guide block passes through the connecting frame and is connected to the closed baffle, and the bottom of the closed baffle is slidably connected to the lower connecting frame by a slider.

[0011] Preferably, the bidirectional lead screw is provided with two sections of threads with opposite directions, and the moving guide block is symmetrically arranged on the two sections of threads.

[0012] Preferably, a protruding annular edge is provided on the door panel at the position corresponding to the blower, and a sealing block is provided at the edge of the closed baffle facing the door panel. When the closed baffle is closed, the sealing block is in contact with the outer wall of the annular edge.

[0013] Preferably, the locking mechanism includes a positioning frame, positioning bolts, and positioning blocks. The positioning frame is fixed to the inner wall of the connecting frame by bolts, and the positioning blocks are disposed at both ends of the positioning frame.

[0014] Preferably, the side frame and the center frame are provided with positioning grooves matching the positioning blocks on the inner wall of the side frame and the center frame near the connecting frame, and the connecting frame is provided with bolt holes matching the positioning bolts.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. When assembling the airtightness test chamber, this utility model achieves the initial positioning of the frame by the cooperation of the plug-in protrusion and the slot, and then combines the locking mechanism and the sealing baffle for fixation. This simplifies the assembly process and ensures the firmness of the connection of each part of the frame, effectively avoiding the impact of frame loosening on test accuracy during the test.

[0017] 2. This utility model, through its sealing mechanism, allows for pressurization or depressurization of the airtightness testing chamber using a blower, creating a pressure difference between the inside and outside of the chamber. After the pressure is adjusted, the sealing mechanism can seal the blower area on the door panel, further improving the sealing effect of the airtightness testing chamber. It is also easy to open and close without manual operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the inner side structure of the side frame of this utility model;

[0021] Figure 4 This is a schematic diagram of the closed mechanism structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the connecting frame structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the locking mechanism of this utility model.

[0024] In the diagram: 1. Side frame; 2. Connecting frame; 3. Central frame; 4. Door panel; 5. Blower; 6. Enclosing mechanism; 61. Connecting frame; 62. Drive motor; 63. Two-way lead screw; 64. Moving guide block; 65. Enclosing baffle; 66. Circular edge;

[0025] 7. Insertion protrusion; 8. Slot;

[0026] 9. Locking mechanism; 91. Positioning bracket; 92. Positioning bolt; 93. Positioning block;

[0027] 10. Sealing baffle. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The following describes an embodiment of this utility model based on its overall structure.

[0030] like Figures 1 to 6 As shown, this utility model provides a sealing frame for an airtight testing chamber, including side frames 1, connecting frames 2, and a central frame 3. The side frames 1 are symmetrically arranged on both sides of the central frame 3. There are two side frames 1, symmetrically distributed on the left and right sides of the central frame 3. Opposite sides of the side frames 1 are connected to the central frame 3 via connecting frames 2. A door panel 4 is installed on one side of each side frame 1, and the door panel is connected to the side frame 1 via hinges. A blower 5 is installed on the door panel 4. A sealing mechanism 6 is provided on the inner side of the door panel 4. The sealing mechanism 6 includes a connecting frame 61 and a drive mechanism. The motor 62, the bidirectional lead screw 63, the moving guide block 64, and the sealing baffle 65 are used to seal the air outlet of the blower 5. The side frame 1 and the central frame 3 are both provided with plug-in protrusions 7. The two ends of the connecting frame 2 are provided with slots 8 that match the plug-in protrusions 7. The inner wall of the connecting frame 2 is provided with a locking mechanism 9. The outer wall of the connecting frame 2 is provided with a sealing baffle 10. The sealing baffle 10 is connected to the side frame 1 and the central frame 3 respectively by bolts, and is fixed to the outer wall of the side frame 1 and the central frame 3 respectively by through bolts to fill the gaps in the frame connection.

[0031] In this embodiment, the side frame 1 is arranged in a U-shape, and the central frame 3 is an open rectangular structure. Both the side frame 1 and the central frame 3 are fixed by welding plates to form a spliced ​​prefabricated component.

[0032] The connecting frame 61 is fixed to the inside of the door panel 4 and is located on the upper and lower sides of the blower 5. The bidirectional lead screw 63 is located in the upper connecting frame 61. One end of the bidirectional lead screw 63 is connected to the output shaft of the drive motor 62. The moving guide block 64 is connected to the bidirectional lead screw 63. One end of the moving guide block 64 passes through the connecting frame 61 and is connected to the closed baffle 65. The bottom of the closed baffle 65 is slidably connected to the lower connecting frame 61 by a slider. The upper connecting frame 61 has a pre-reserved lead screw mounting groove, and the lower connecting frame 61 has a slider groove on its surface. The distance between the two sets of connecting frames 61 matches the height of the closed baffle 65 to ensure that the closed baffle 65 can move stably.

[0033] The bidirectional lead screw 63 has two sections of threads with opposite directions. The moving guide blocks 64 are symmetrically arranged on the two sections of threads. The two moving guide blocks 64 are respectively sleeved on the two sections of threads and are threadedly connected to the bidirectional lead screw 63.

[0034] A protruding annular edge 66 is provided on the door panel 4 at the position corresponding to the blower 5. A sealing block is provided on the edge of the sealing baffle 65 facing the door panel 4. When the sealing baffle 65 is closed, the sealing block fits against the outer wall of the annular edge 66. When the sealing baffle 65 is closed, the sealing block fits tightly against the outer wall of the annular edge 66 and the surface of the door panel 4, forming a double seal to prevent gas leakage.

[0035] The locking mechanism 9 includes a positioning frame 91, positioning bolts 92, and positioning blocks 93. The positioning frame 91 is fixed to the inner wall of the connecting frame 2 by bolts. The positioning blocks 93 are located at both ends of the positioning frame 91. The positioning frame 91 is a bent metal plate and is fixed to the middle of the inner wall of the connecting frame 2 by bolts. There are two positioning blocks 93, which are welded to both ends of the positioning frame 91.

[0036] The side frame 1 and the center frame 3 are provided with positioning grooves matching the positioning block 93 on the inner wall of the side close to the connecting frame 2. The connecting frame 2 is provided with bolt holes matching the positioning bolt 92. The positioning frame 91 is fixed to the connecting frame 2 by the positioning bolt 92. At this time, the positioning block 93 is pressed into the positioning groove by the pre-tightening force of the positioning bolt 92, realizing the initial positioning of the frame splicing.

[0037] The blower and motor are existing technologies and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail. The wiring diagram of the motor in this utility model is common knowledge in the field, and its working principle is already known technology. The appropriate model should be selected based on actual use; therefore, the control method and wiring layout of the motor will not be explained in detail.

[0038] The working principle and process of a sealing frame for an airtight testing chamber: Insert the insertion protrusions 7 on the side frame 1 and the central frame 3 into the corresponding slots at both ends of the connecting frame 2 to complete the initial positioning. The positioning frame 91 is fixed to the inner wall of the connecting frame 2 by positioning bolts 92. The positioning blocks 93 at both ends of the positioning frame 91 match the positioning grooves on the inner walls of the side frame 1 and the central frame 3 near the connecting frame 2. Then, screw in the positioning bolts 92. Through the cooperation of the positioning bolts 92 with the bolt holes and the engagement of the positioning blocks 93 with the positioning grooves, the three are firmly connected. At the same time, the sealing baffle 10 on the outer wall of the connecting frame 2 is connected to the side frame 1 and the central frame 3 by bolts, further enhancing the overall sealing performance after assembly. This achieves the airtight sealing frame assembly, facilitating... The operation allows for the filling of gaps with sealant, further improving the airtightness of the airtight chamber. Multiple central frames 3 can be selected to assemble with connecting frames 2, and the length of the airtight chamber can be flexibly adjusted according to usage requirements. The closing mechanism 6 on the inner side of the door panel 4 controls the opening and closing of the blower 5 at the corresponding position. When closing is required, the drive motor 62 drives the bidirectional lead screw 63 to bring the two closing baffles 65 closer together until they close. At this time, the sealing block on the edge of the closing baffle 65 fits against the outer wall of the protruding annular edge 66 at the corresponding position of the blower 5 on the door panel 4, achieving a seal at that position. When opening is required, the drive motor 62 rotates in the opposite direction, causing the closing baffles 65 to move away from each other. Opening and closing is convenient and requires no manual operation.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing frame for an airtight testing chamber, comprising a side frame (1), a connecting frame (2), and a central frame (3), characterized in that: The side frames (1) are symmetrically arranged on both sides of the central frame (3). The opposite side of the side frames (1) is connected to the central frame (3) through the connecting frame (2). A door panel (4) is installed on one side of the side frame (1). A blower (5) is installed on the door panel (4). A closing mechanism (6) is provided on the inner side of the door panel (4). The closing mechanism (6) includes a connecting frame (61), a drive motor (62), a two-way lead screw (63), and a moving guide block. (64) and closed baffle (65), the side frame (1) and the center frame (3) are provided with plug-in protrusions (7), the two ends of the connecting frame (2) are provided with slots (8) that match the plug-in protrusions (7), the inner wall of the connecting frame (2) is provided with a locking mechanism (9), the outer wall of the connecting frame (2) is provided with a sealing baffle (10), and the sealing baffle (10) is connected to the side frame (1) and the center frame (3) respectively by bolts.

2. The sealing frame of an airtight testing chamber according to claim 1, characterized in that: The side frame (1) is arranged in a U-shape, and the central frame (3) is an open rectangular structure.

3. The sealing frame of an airtight testing chamber according to claim 2, characterized in that: The connecting frame (61) is fixed to the inside of the door panel (4), and the connecting frame (61) is set on the upper and lower sides of the blower (5).

4. The sealing frame of an airtight testing chamber according to claim 3, characterized in that: The bidirectional lead screw (63) is installed in the upper connecting frame (61). One end of the bidirectional lead screw (63) is connected to the output shaft of the drive motor (62). The moving guide block (64) is connected to the bidirectional lead screw (63). One end of the moving guide block (64) passes through the connecting frame (61) and is connected to the closed baffle (65). The bottom of the closed baffle (65) is slidably connected to the lower connecting frame (61) by a slider.

5. The sealing frame of an airtight testing chamber according to claim 4, characterized in that: The bidirectional lead screw (63) is provided with two sections of threads with opposite directions, and the moving guide block (64) is symmetrically arranged on the two sections of threads.

6. The sealing frame of an airtight testing chamber according to claim 5, characterized in that: A protruding annular edge (66) is provided on the door panel (4) at the position corresponding to the blower (5). A sealing block is provided on the edge of the closed baffle (65) facing the door panel (4). When the closed baffle (65) is closed, the sealing block is in contact with the outer wall of the annular edge (66).

7. The sealing frame of an airtight testing chamber according to claim 6, characterized in that: The locking mechanism (9) includes a positioning frame (91), a positioning bolt (92), and a positioning block (93). The positioning frame (91) is fixed to the inner wall of the connecting frame (2) by bolts, and the positioning block (93) is set at both ends of the positioning frame (91).

8. The sealing frame of an airtight testing chamber according to claim 7, characterized in that: The side frame (1) and the center frame (3) are provided with positioning grooves matching the positioning block (93) on the inner wall of the side frame (1) and the center frame (3) near the connecting frame (2), and the connecting frame (2) is provided with bolt holes matching the positioning bolts (92).

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