Overall sealing access hole of purification workshop

Abstract

The utility model discloses an integrally-sealed access hole of a purification workshop, and relates to the technical field of access doors. The access door comprises an opening structure and an access door frame, the access door frame comprises a connecting ring fixed to the opening structure and an access door plate locked and matched with the connecting ring, an annular sealing face is arranged on the inner ring of the lower side of the connecting ring, an annular sealing groove is formed in the edge of the lower side face of the access door plate, and an annular pressing strip is arranged in the annular sealing groove. The contact surfaces of the annular pressing strip and the connecting ring are in sealing fit through a V-shaped sealing ring; an alarm is fixed to the edge of the inner side of the maintenance door plate and is integrated with an infrared sensor, a loudspeaker and a card reading area. According to the utility model, through the arrangement of the alarm, the functions of intelligent monitoring and remote notification of the state of the access port are realized, when the access door is illegally opened, the system gives an alarm and sends a notification to the remote monitoring end through the wireless communication module, and meanwhile, identity verification is supported to confirm legal entrances, so that the safety of the whole system is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of inspection door technology, and in particular relates to an overall sealed inspection port for cleanrooms. Background Technology

[0002] A cleanroom (also known as a purification workshop) is a closed workspace where environmental parameters such as air cleanliness, temperature, humidity, and pressure differential are strictly controlled. It is widely used in industries with extremely high requirements for the production environment, such as electronics manufacturing, biomedicine, food processing, and aerospace. In actual operation, cleanrooms require regular equipment maintenance, cleaning, inspection, and troubleshooting. Therefore, access panels are usually installed in the walls or ceilings to allow personnel and tools to enter and exit.

[0003] Conventional access doors typically employ a single planar sealing structure, such as a rubber gasket and metal flange compression. While simple and easy to implement, this structure is prone to seal failure under conditions of frequent opening and closing, significant temperature changes, or large pressure fluctuations. This allows external contaminants to seep in, compromising the cleanliness of the environment. During opening and closing, friction and deformation between the seal and the door frame cause a decline in sealing performance. Especially in scenarios requiring frequent operation, traditional structures struggle to maintain a stable seal, impacting long-term usability. Furthermore, traditional access doors often lack any security alarms or identification systems, failing to effectively monitor and warn against unauthorized opening attempts, posing a certain security risk.

[0004] To address these issues, we provide a fully sealed maintenance access panel for cleanrooms. Utility Model Content

[0005] The purpose of this utility model is to provide a fully sealed maintenance access port for cleanrooms, which solves the problem of existing maintenance doors lacking safety alarms or identification mechanisms by setting up an alarm to intelligently monitor and remotely notify the status of the maintenance access port.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a fully sealed maintenance access panel for a cleanroom, comprising an opening structure installed on the wall or ceiling of the cleanroom, and a maintenance door frame matching the opening structure. The maintenance door frame includes a connecting ring fixed to the opening structure and a maintenance door panel locked to the connecting ring. The lower inner ring of the connecting ring is provided with an annular sealing surface, and the contact surface between the annular sealing surface and the opening structure is sealed by an annular sealing gasket. The lower side edge of the maintenance door panel is provided with an annular sealing groove, and an annular pressure strip is provided inside the annular sealing groove. The contact surface between the annular pressure strip and the connecting ring is sealed by a V-shaped sealing ring.

[0008] An alarm is fixed to the inner side of the inspection door panel. The alarm integrates an infrared sensor, a speaker, and a card reader. The infrared sensor works in conjunction with the positioning mark built into the opening structure, and the card reader works in conjunction with the work card or smart sensor of the maintenance personnel.

[0009] The present invention is further configured such that the top periphery of the opening structure is provided with an outwardly protruding flange edge, the flange edge is provided with a plurality of bolt holes arranged circumferentially, the bottom edge of the connecting ring is provided with a mounting flange corresponding to the flange edge, and the mounting flange is fixedly connected to the flange edge by a plurality of locking bolts.

[0010] The present invention is further configured such that a hinge frame is fixed on the periphery of the connecting ring, and the hinge frame is rotatably connected to a support arm via a shaft, and a pair of the support arms are fixed to the edge of the inspection door panel.

[0011] The present invention is further provided that a transparent observation window is fixed in the middle of the inspection door panel by a sealing frame, and a handle is fixed on the edge of the inspection door panel.

[0012] The present invention is further configured such that an ear seat is fixed on the periphery of the connecting ring, and a locking pin is rotatably connected to the ear seat via a shaft. The top of the locking pin cooperates with the groove on the side of the limiting plate, and the limiting plate is fixed to the side of the inspection door panel.

[0013] The present invention is further configured such that the alarm has a built-in replaceable battery, and the infrared sensor, speaker and card reader are all connected to the built-in circuit board of the alarm via built-in wires.

[0014] The present invention is further configured such that the alarm is equipped with a wireless communication module, and the alarm establishes an interactive communication link with the remote monitoring terminal through the wireless communication module.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model, by setting up an alarm and integrating an infrared sensor, speaker, card reader and wireless communication module, realizes intelligent monitoring and remote notification functions for the status of the maintenance door. When the maintenance door is illegally opened, the system can immediately issue an alarm and send a notification to the remote monitoring terminal through the wireless communication module. At the same time, it supports identity verification to confirm the legitimate entrant, thereby enhancing the security of the entire system.

[0017] 2. This utility model ensures excellent sealing performance even under frequent opening conditions by setting two sealing lines: a first static seal between the annular sealing surface and the annular sealing gasket, and a second dynamic seal composed of the annular sealing groove, the annular pressure strip, and the V-shaped sealing ring.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of one side of the overall structure of a fully sealed inspection port in a cleanroom.

[0021] Figure 2 This is a schematic diagram of the other side of the overall structure of a fully sealed inspection port in a cleanroom.

[0022] Figure 3 This is a schematic diagram of the interior of a maintenance door frame for a fully sealed maintenance access in a cleanroom.

[0023] Figure 4 This is a schematic diagram of an alarm structure for a fully sealed inspection port in a cleanroom.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 100 - Open structure, 200 - Inspection door frame, 201 - Connecting ring, 201a - Ear seat, 201b - Locking pin, 201c - Hinge frame, 201d - Annular sealing surface, 202 - Inspection door panel, 202a - Support arm, 202b - Transparent observation window, 202c - Handle, 202d - Limiting plate, 202e - Annular sealing groove, 202f - Annular pressure strip, 300 - Alarm, 301 - Infrared sensor, 302 - Speaker, 303 - Card reader area. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Example 1

[0028] Please see Figure 1-4This utility model relates to a fully sealed maintenance access panel for a cleanroom, comprising an opening structure 100 installed on the wall or ceiling of the cleanroom, and a maintenance door frame 200 matching the opening structure 100. The maintenance door frame 200 includes a connecting ring 201 fixed to the opening structure 100, and a maintenance door panel 202 locked to the connecting ring 201. The lower inner ring of the connecting ring 201 is provided with an annular sealing surface 201d, and the contact surface between the annular sealing surface 201d and the opening structure 100 is sealed by an annular sealing gasket. The lower side edge of the maintenance door panel 202 is provided with an annular sealing groove 202e, and an annular pressure strip 202f is provided inside the annular sealing groove 202e. The contact surface between the annular pressure strip 202f and the connecting ring 201 is sealed by a V-shaped sealing ring.

[0029] The annular sealing surface 201d and the annular sealing gasket work together to form the first static sealing barrier of the access port. The annular sealing groove 202e and the annular pressure strip 202f, together with the contact surface of the V-shaped sealing ring and the connecting ring 201, form the second dynamic seal, which is suitable for occasions with frequent opening.

[0030] Specifically, a hinge frame 201c is fixed to the periphery of the connecting ring 201. The hinge frame 201c is rotatably connected to a support arm 202a via a shaft. A pair of support arms 202a are fixed to the edge of the access panel 202, allowing the access panel 202 to be rotated open and closed. An ear seat 201a is fixed to the periphery of the connecting ring 201. The ear seat 201a is rotatably connected to a locking pin 201b via a shaft. The top of the locking pin 201b engages with a groove on the edge of the limiting plate 202d. The limiting plate 202d is fixed to the edge of the access panel 202. The locking engagement between the locking pin 201b and the limiting plate 202d ensures that the access panel 202 is securely locked after closing, preventing accidental opening of the access panel 202 due to changes in external air pressure or vibration.

[0031] Furthermore, the top periphery of the opening structure 100 is provided with outwardly protruding flange edges, and the flange edges are provided with a plurality of bolt holes arranged circumferentially. The bottom edge of the connecting ring 201 is provided with a mounting flange corresponding to the flange edges, and the mounting flange is fixedly connected to the flange edges by a plurality of locking bolts.

[0032] A transparent observation window 202b is fixed to the middle of the inspection door panel 202 by a sealing frame, allowing operators to observe the internal situation without opening the door, reducing the risk of contamination caused by frequent opening and closing, and improving work efficiency. A handle 202c is fixed to the edge of the inspection door panel 202 for easy manual operation.

[0033] The operation process of this embodiment is as follows: When it is necessary to open the access panel on the wall or ceiling of the cleanroom, firstly, apply external force through the handle 202c provided on the side of the access panel 202, and manually pull out the locking pin 201b rotatably connected to the ear seat 201a on the side of the connecting ring 201 from the slot on the side of the limiting plate 202d to release the locking state; then, using the shaft connection structure between the hinge frame 201c and the support arm 202a, the access panel 202 is rotated around the hinge to open, at which time maintenance personnel can enter the cleanroom through the opening structure 100 to perform inspection or maintenance work; when closing the access panel, first align the access panel 202 with the position of the connecting ring 201, and slowly rotate it so that the annular pressure strip 202f in the annular sealing groove 202e on the lower side of the connection ring 201 is in contact with the connecting ring 202. The V-shaped sealing ring on 01 fits tightly, and the edge of the V-shaped sealing ring is pressed into the annular sealing groove 202e to form a second dynamic seal. At the same time, an annular sealing gasket is provided between the annular sealing surface 201d of the lower inner ring of the connecting ring 201 and the opening structure 100, forming the first static sealing line to ensure good overall sealing performance. After the maintenance door panel 202 is completely closed, the locking pin 201b is reinserted into the groove of the limiting plate 202d and tightened to achieve mechanical locking and prevent the maintenance door panel 202 from being accidentally opened due to changes in external air pressure or vibration. Throughout the process, the transparent observation window 202b in the middle of the maintenance door panel 202 allows the operator to observe the internal environment without opening the door, thereby effectively reducing the risk of pollution caused by frequent opening and closing of the door and improving work efficiency and safety.

[0034] Example 2

[0035] Please see Figure 3 and Figure 4 Based on the first specific embodiment, an alarm 300 is fixed on the inner side of the maintenance door panel 202. The alarm 300 integrates an infrared sensor 301, a speaker 302, and a card reader area 303. The infrared sensor 301 cooperates with the positioning mark built into the opening structure 100, and the card reader area 303 cooperates with the maintenance personnel's work card or smart sensor terminal.

[0036] Specifically, the alarm 300 has a built-in replaceable battery, and the infrared sensor 301, speaker 302 and card reader 303 are all connected to the built-in circuit board of the alarm 300 through built-in wires.

[0037] Furthermore, the alarm 300 is also equipped with a wireless communication module, through which the alarm 300 establishes an interactive communication link with the remote monitoring terminal.

[0038] The operation process of this embodiment is as follows: When the maintenance door panel 202 is opened, the infrared sensor 301 in the alarm 300 fixed on the inner side will deviate from the positioning mark built into the opening structure 100, and the alarm 300 will enter the alarm state, emit a local alarm through the speaker 302, and immediately notify the remote monitoring terminal through the wireless communication module. Maintenance personnel can bring their work card or smart sensor close to the card reader 303 to verify their identity. If the identity verification is successful, the circuit board inside the alarm 300 will record the information and turn off the alarm; otherwise, the alarm will continue to sound.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A fully sealed maintenance access panel for a cleanroom, comprising an opening structure (100) disposed on the wall or ceiling of the cleanroom, and a maintenance door frame (200) matching the opening structure (100); characterized in that: The maintenance door frame (200) includes a connecting ring (201) fixed to the opening structure (100) and a maintenance door panel (202) locked to the connecting ring (201). The lower inner ring of the connecting ring (201) is provided with an annular sealing surface (201d). The contact surface between the annular sealing surface (201d) and the opening structure (100) is sealed by an annular sealing gasket. The lower side edge of the maintenance door panel (202) is provided with an annular sealing groove (202e). An annular pressure strip (202f) is provided inside the annular sealing groove (202e). The contact surface between the annular pressure strip (202f) and the connecting ring (201) is sealed by a V-shaped sealing ring. An alarm (300) is fixed on the inner side of the inspection door panel (202). The alarm (300) integrates an infrared sensor (301), a speaker (302), and a card reader (303). The infrared sensor (301) cooperates with the positioning mark built into the opening structure (100), and the card reader (303) cooperates with the work card or smart sensor terminal of the maintenance personnel.

2. The integrally sealed inspection port for a cleanroom according to claim 1, characterized in that, The top perimeter of the opening structure (100) is provided with outwardly protruding flange edges, and multiple bolt holes are provided on the flange edges at intervals along the circumference. The bottom edge of the connecting ring (201) is provided with a mounting flange corresponding to the flange edges, and the mounting flange is fixedly connected to the flange edges by multiple locking bolts.

3. The integrally sealed inspection port for a cleanroom according to claim 1, characterized in that, A hinge frame (201c) is fixed around the connecting ring (201). The hinge frame (201c) is rotatably connected to a support arm (202a) via a shaft. A pair of support arms (202a) are fixed to the edge of the inspection door panel (202).

4. The integrally sealed inspection port for a cleanroom according to claim 1, characterized in that, A transparent observation window (202b) is fixed in the middle of the inspection door panel (202) by a sealing frame, and a handle (202c) is fixed on the edge of the inspection door panel (202).

5. The integrally sealed inspection port for a cleanroom according to claim 1, characterized in that, The connecting ring (201) is fixed with an ear seat (201a) on its periphery. The ear seat (201a) is rotatably connected to a locking pin (201b) via a shaft. The top of the locking pin (201b) is engaged with a groove on the side of the limiting plate (202d). The limiting plate (202d) is fixed to the side of the maintenance door panel (202).

6. The integrally sealed inspection port for a cleanroom according to claim 1, characterized in that, The alarm (300) has a built-in replaceable battery, and the infrared sensor (301), speaker (302) and card reader (303) are all connected to the built-in circuit board of the alarm (300) via built-in wires.

7. The integrally sealed inspection port for a cleanroom according to claim 1, characterized in that, The alarm (300) is also equipped with a wireless communication module, and the alarm (300) establishes an interactive communication link with the remote monitoring terminal through the wireless communication module.

Images