Air shower for clean room

Abstract

The utility model discloses a kind of air shower rooms for clean room, including air shower room main body, the both ends of air shower room main body are rotatably installed with outer door and inner door, and air shower room main body is installed with air shower mechanism, locking mechanism is equipped between outer door and inner door, the locking mechanism is used to limit inner door opening when outer door opens;The locking mechanism includes the slot of being opened in the bottom of air shower room main body, sliding plate is horizontally slidably equipped in the slot, and the inner wall between the side of sliding plate and slot is fixed with first spring, compared with prior art, the beneficial effects of the utility model are: the utility model discloses a kind of air shower rooms for clean room, limit inner door opening when outer door opens by setting locking mechanism, effectively prevent dust and pollutants from outside into clean room, guarantee clean area air cleanliness, while the fixed mechanism increased in embodiment two further enhances the use safety, avoid outer door to be accidentally opened in air shower process.

Description

Technical Field

[0001] This utility model relates to the field of purification equipment technology, specifically to an air shower for cleanrooms. Background Technology

[0002] An air shower is a local purification device, mainly used in clean rooms, dust-free workshops and other places with high requirements for environmental cleanliness. Its principle is to remove dust particles attached to the surface of personnel or objects by blowing high-speed clean air, so as to prevent these pollutants from entering the clean area and thus ensure the air cleanliness of the clean area.

[0003] Related technologies include a Chinese utility model patent with authorization announcement number CN209465426U, which describes an air shower room with double doors, one for entry and one for exit, making it more convenient for people to enter and exit the air shower.

[0004] However, the other end of the air shower is usually connected to a clean room or dust-free workshop. During use, there may be situations where the outer door is left open before the inner door is closed, which will allow dust from the outside to enter the clean room. It is also possible that while people are inside the air shower, people outside may open the outer door without following the rules, which will compromise the cleanliness of the room. Utility Model Content

[0005] The present invention aims to prevent the inner door from opening when the outer door is opened, thereby preventing external pollution from entering the clean room, and to prevent the outer door from opening accidentally during the air shower process by means of a locking mechanism, thereby improving the cleaning effect and the safety of use.

[0006] This utility model provides the following technical solution: an air shower for a cleanroom, comprising an air shower body, an outer door and an inner door respectively rotatably mounted at both ends of the air shower body, and an air shower mechanism installed on the air shower body, wherein a locking mechanism is provided between the outer door and the inner door, the locking mechanism being used to restrict the opening of the inner door when the outer door is opened;

[0007] The locking mechanism includes a slot formed at the bottom of the air shower body, a sliding plate horizontally sliding in the slot, and a first spring fixed between one side of the sliding plate and the inner wall of the slot. A cam is fixed at the lower end of the outer door's pivot, and the side of the cam maintains sliding contact with the side of the sliding plate. An L-shaped limiting groove is provided at the lower end of the inner door near the sliding plate, and a limiting plate perpendicular to the sliding plate is fixed at the end of the sliding plate near the inner door.

[0008] The locking mechanism is specifically configured as follows:

[0009] When the outer door is opened, the cam is driven to rotate via the rotating shaft. When the cam rotates, it pushes the sliding plate to move, causing the limiting plate of the sliding plate to slide into the L-shaped limiting groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the air shower for cleanrooms of this utility model, by setting a locking mechanism, restricts the opening of the inner door when the outer door is opened, effectively preventing external dust and pollutants from entering the cleanroom and ensuring the air cleanliness of the clean area. At the same time, the fixing mechanism added in Embodiment 2 further enhances the safety of use and prevents the outer door from being accidentally opened during the air shower process. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the outer door of this utility model when it is opened.

[0012] Figure 2 This is a three-dimensional structural diagram of the inner door of this utility model when it is opened.

[0013] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0014] Figure 4 This is a three-dimensional cross-sectional view of the bottom of the outer door of this utility model when it is opened.

[0015] Figure 5 This is a three-dimensional structural diagram of the outer door of this utility model when it is opened.

[0016] Figure 6 This is a partial cross-sectional structural diagram of the outer door of this utility model when it is closed. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-6 .

[0019] Example 1

[0020] An air shower for cleanrooms includes an air shower body 2. An outer door 8 and an inner door 1 are rotatably installed at both ends of the air shower body 2. An air shower mechanism 10 is installed on the air shower body 2. The air shower mechanism 10 is an existing structure and will not be described in detail here. One side of the inner door 2 is used to connect to the cleanroom, dust-free workshop, etc. A locking mechanism is provided between the outer door 8 and the inner door 2. The locking mechanism is used to restrict the opening of the inner door 2 when the outer door 8 is opened, preventing the outer door 8 and the inner door 2 from opening at the same time. For example, when using the air shower, the outer door 8 may be forgotten to be closed or not closed tightly. In this case, the locking mechanism can prevent personnel from directly entering the cleanroom after cleaning.

[0021] In this embodiment, the locking mechanism includes a slot 4 formed at the bottom of the air shower body 2. The slot 4 passes through the front and rear ends of the air shower body 2, and a sliding plate 7 is horizontally slidably provided in the slot 4. A first spring 15 is fixed between one side of the sliding plate 7 and the inner wall of the slot 4, and the sliding plate 7 can slide in the left and right directions in the slot 4. A cam 5 is fixed at the lower end of the pivot 6 of the outer door 8. The side of the cam 5 maintains sliding contact with the side of the sliding plate 7. An L-shaped limiting groove 14 is provided at the lower end of the inner door 2 near the sliding plate 7. A limiting plate 13 perpendicular to the sliding plate 7 is fixed at the end of the sliding plate 7 near the inner door 2.

[0022] The locking mechanism is specifically configured as follows:

[0023] When the outer door 2 is opened, the cam 5 is driven to rotate by the rotating shaft 6. When the cam 5 rotates, it pushes the sliding plate 7 to move, so that the limiting plate 13 of the sliding plate 7 slides into the L-shaped limiting groove 14.

[0024] With the above structure, when the outer door 8 is in the open state, the protruding surface of the cam 5 will press against the side of the sliding plate 7, causing the sliding plate 7 to move to the right, which will drive the limiting plate 13 to be inserted into the L-shaped limiting groove 14 of the inner door 2, thereby restricting the opening of the inner door 2.

[0025] An outer door lock 9 is installed on the outer surface of the outer door 8, and an inner door lock 12 is installed on the inner surface of the inner door 1.

[0026] Example 2

[0027] The structure of Embodiment 2 is roughly the same as that of Embodiment 1. The difference is that, based on Embodiment 1, the air shower body 2 is provided with a fixing mechanism for fixing the outer door 8. The fixing mechanism is used to restrict the opening of the outer door 8 when there are people inside the air shower body 2. For example, when people inside the air shower body 2 open the inner door 1 to prepare to enter the clean room, the outer door 8 may open, causing the clean room to connect with the external environment.

[0028] In this embodiment, the fixing mechanism includes a support plate 11 that is vertically slidably disposed at the bottom of the air shower body 2. A second spring 16 is connected between the support plate 11 and the bottom of the air shower body 2. An L-shaped fixing hook 17 is fixed on the bottom of the support plate 11 near the outer door 8. The bottom of the fixing hook 17 has a sloping structure. A movable hook 18 corresponding to the fixing hook 17 is vertically slidably disposed on the inner surface of the bottom of the outer door 8. A third spring 19 is connected between the movable hook 18 and the outer door 8.

[0029] With the fixed mechanism in place, when personnel enter the air shower, the bearing plate 11 will move downward under the action of gravity and squeeze the second spring 16. In this case, when the outer door 8 is closed, the movable hook 18 will hook back onto the fixed hook 17, making the outer door 8 unable to open. When personnel in the air shower open the inner door 1 and enter the clean room, the bearing plate 11 will move upward and reset under the elastic force of the second spring 16, allowing the outer door 8 to open normally.

[0030] Specifically, such as Figure 6 As shown, the lower end of the air shower body 2 is provided with a movable groove 20, and the support plate 11 is movably installed in the movable groove 20. The inner wall of the movable groove 20 is provided with a groove 21, and the side of the support plate 11 is provided with a protrusion. The protrusion is slidably disposed in the groove 21, and the range of motion of the support plate 11 in the air shower body 2 is limited to 1-2 cm.

[0031] In summary, this utility model, through the design of a locking mechanism, effectively restricts the opening of the inner door 1 when the outer door 8 is open, preventing external dust and contaminants from entering the cleanroom or dust-free workshop, thereby ensuring the air cleanliness and product quality within the clean area. In Embodiment Two, a fixing mechanism is added to restrict the opening of the outer door 8 when someone is inside the air shower, preventing the outer door 8 from being accidentally opened during the air shower process or before personnel have fully entered the clean area, further improving the safety of the air shower.

[0032] 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 cleanroom air shower, comprising an air shower body, wherein an outer door and an inner door are rotatably mounted at both ends of the air shower body, and an air shower mechanism is installed on the air shower body, characterized in that: A locking mechanism is provided between the outer door and the inner door, which is used to restrict the opening of the inner door when the outer door is opened; The locking mechanism includes a slot formed at the bottom of the air shower body, a sliding plate horizontally sliding in the slot, and a first spring fixed between one side of the sliding plate and the inner wall of the slot. A cam is fixed at the lower end of the outer door's pivot, and the side of the cam maintains sliding contact with the side of the sliding plate. An L-shaped limiting groove is provided at the lower end of the inner door near the sliding plate, and a limiting plate perpendicular to the sliding plate is fixed at the end of the sliding plate near the inner door. The locking mechanism is specifically configured as follows: When the outer door is opened, the cam is driven to rotate via the rotating shaft. When the cam rotates, it pushes the sliding plate to move, causing the limiting plate of the sliding plate to slide into the L-shaped limiting groove.

2. The air shower for cleanrooms as described in claim 1, characterized in that: An outer door lock is installed on the outer surface of the outer door, and an inner door lock is installed on the inner surface of the inner door.

3. The air shower for cleanrooms as described in claim 1, characterized in that: The air shower body is provided with a fixing mechanism for fixing the outer door, which is used to restrict the opening of the outer door when there are people inside the air shower body; The fixing mechanism includes a support plate that is vertically slidably disposed at the bottom of the air shower body. A second spring is connected between the support plate and the bottom of the air shower body. An L-shaped fixing hook is fixed on the bottom of the support plate near the outer door. A movable hook corresponding to the fixing hook is vertically slidably disposed on the inner surface of the bottom of the outer door. A third spring is connected between the movable hook and the outer door.

4. The air shower for cleanrooms as described in claim 3, characterized in that: The lower interior of the air shower chamber is provided with a movable groove, and the support plate is movably installed in the movable groove. The inner wall of the movable groove is provided with a groove, and the side of the support plate is provided with a protrusion, which is slidably disposed in the groove.

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