CN116181204A

CN116181204A - Airtight door with air pressure device

Info

Publication number: CN116181204A
Application number: CN202310335528.3A
Authority: CN
Inventors: 崔静涛; 李飞
Original assignee: Sichuan Chuanjing Clean Technology Holding Co ltd
Current assignee: Sichuan Chuanjing Clean Technology Holding Co ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-05-30

Abstract

The invention discloses a airtight door with an air pressure device, which comprises: the door comprises a door frame, wherein four inner corners of one side surface of the door frame are provided with arc chamfers; the door plate is hinged with the door frame, and four vertex angles of the door plate are provided with door plate circular arcs matched with the arc-shaped chamfer angles; the inflatable sealing strip is circumferentially arranged on the side wall of the door plate; the sealing device is used for sealing a gap between the door plate and the door frame; when the door plate is in a closed state, the inflatable sealing strip is in an inflated state, and the door plate and the door frame are sealed; when the door panel is in a non-closed state, the inflatable sealing strip is in a non-inflated state. The sealing performance between the door plate and the door frame is ensured, the gas leakage is reduced, the protection effect is realized on places with biological potential safety hazards, the air supply quantity is reduced on clean space with air tightness requirements, the energy consumption is saved, meanwhile, the sealing effect is further ensured due to the circular arc door plate structure, and the service life of the sealing strip is prolonged.

Description

Airtight door with air pressure device

Technical Field

The invention relates to the technical field of airtight doors, in particular to an airtight door with an air pressure device.

Background

Clean rooms, also known as clean rooms or clean rooms, have indoor pollution control functions, and are rooms with air filtration, distribution, optimization, construction materials and devices.

The control of the pressure difference in the clean room is generally realized by adjusting the difference between the air supply quantity, the air return quantity and the air exhaust quantity, wherein the air quantity difference is the permeation air quantity under the action of the pressure difference at the two sides of the gap between the doors and the windows of the room, and the so-called pressure difference is the resistance of the air passing through the gap between the doors and the windows of the room.

Under normal conditions, the clean room without the direct external wall is in a dynamic protection state, the indoor pressure is stable, the air flow direction is certain, the air tightness of the clean room is secondary only by keeping the pressure difference, namely, the air tightness does not play a great role at the moment. However, even with modern ventilation air-conditioning systems, clean rooms cannot be guaranteed to be negative (positive) in all cases, since mechanical malfunctions of the ventilation air-conditioning equipment cannot be ruled out and even redundant systems are not 100% reliable, so that a certain tightness is very necessary for clean rooms for certain applications.

The sealing door used in the current clean room has the advantages that the joint of the door plate and the periphery of the door frame is in right-angle transition, the sealing adopts a compressed sealing strip mode, the sealing effect is poor, and particularly, the leakage at the four corners of the door is more serious.

The gas tightness of the area to be strictly protected cannot be well protected, because the adverse effect caused by leakage has a great hidden trouble for cleaning or biological protection.

Disclosure of Invention

The invention aims to provide a closed door with an air pressure device, which aims to solve the technical problems in the background technology.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

a hermetic door with pneumatic means, comprising: the door comprises a door frame, wherein four inner corners of one side surface of the door frame are provided with arc chamfers; the door plate is hinged with the door frame, and four vertex angles of the door plate are provided with door plate circular arcs matched with the arc-shaped chamfer angles; the inflatable sealing strip is circumferentially arranged on the side wall of the door plate; the sealing device is used for sealing a gap between the door plate and the door frame; when the door plate is in a closed state, the inflatable sealing strip is in an inflated state, and the door plate and the door frame are sealed; when the door panel is in a non-closed state, the inflatable sealing strip is in a non-inflated state.

In some embodiments, the door frame is a closed rectangle, and a first step arranged circumferentially is arranged on one side of the door frame; the door plate comprises a first part plate and a second part plate with a projection surface larger than that of the first part plate, the first part plate and the second part plate are in a convex shape, the first part plate is arranged in the door frame, and meanwhile, the second part plate is arranged in the first step; the door plate is arranged on the first part plate in an arc manner; the side wall of the first part plate is provided with a groove which is circumferentially arranged, and the inflatable sealing strip is arranged in the groove.

In some embodiments, the second partial plate is provided with an inflation connector that communicates with the inflation sealing strip.

In some embodiments, the door panel is provided with a viewing window.

In some embodiments, the first and second partial plates are integrally formed.

In some embodiments, the door panel comprises a skeleton in a convex shape and a heat insulation material filled in the skeleton; a panel is arranged outside the framework.

Compared with the prior art, the invention has the following beneficial effects:

the sealing performance between the door plate and the door frame is ensured, the gas leakage is reduced, the protection effect is realized on places with biological potential safety hazards, the air supply quantity is reduced on clean space with air tightness requirements, the energy consumption is saved, meanwhile, the sealing effect is further ensured due to the circular arc door plate structure, and the service life of the sealing strip is prolonged.

Drawings

Fig. 1 is a schematic front view of a airtight door with an air pressure device provided in the present application.

Fig. 2 is a schematic back view of the airtight door with the air pressure device provided in the application.

Fig. 3 is a sectional view of B-B in fig. 1.

Fig. 4 is a schematic diagram of the pressure release state of the inflatable sealing strip of the I part in fig. 3.

Fig. 5 is a schematic diagram of the inflation sealing strip of the portion I in fig. 3 in a pressurized state.

Illustration of:

1-inflation joint, 2-door plate, 3-door frame, 4-observation window, 5-inflation sealing strip, 6-door plate arc and 7-arc chamfer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals refer to the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of the present application. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Embodiments of the present application are described in detail below with reference to the accompanying drawings.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, or indirectly connected through intermediaries, for example, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on the drawings, which are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or display that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or display.

A closed door with an air pressure device according to an embodiment of the present application will be described in detail with reference to fig. 1 to 5. It is noted that the following examples are merely for explaining the present application and are not to be construed as limiting the present application.

Example 1:

as shown in fig. 1-3, a hermetic door with a pneumatic device, comprising: the door comprises a door frame 3 and an adaptive door plate 2, wherein four inner corners of one side surface of the door frame 3 are provided with arc chamfers 7; the door frame 3 is a closed rectangle, and a first step which is circumferentially arranged is arranged on one side of the door frame 3; the door plate 2 comprises a first part plate and a second part plate with a projection surface larger than that of the first part plate, the door plate 2 formed by the first part plate and the second part plate is in a convex shape, and the first part plate and the second part plate can be integrally formed. The first partial plate is arranged in the door frame 3, and the second partial plate is arranged in the first step, so that the door frame 3 and the door plate 2 are flush after the door is closed. The door plate 2 is arranged on the first part plate in an arc manner; the side wall of the first part plate is provided with a groove which is circumferentially arranged, and the inflatable sealing strip 5 is arranged in the groove.

The door plate 2 consists of a framework, heat insulation materials, a panel and an inflatable sealing adhesive tape, wherein the door plate 2 comprises a convex framework and heat insulation materials filled in the framework; a panel is arranged outside the framework. The framework is formed by full welding of four door body panels and four door body arc corners arranged at the four corners, the door body is filled with heat insulation materials, and the inflatable sealing strip 5 is inlaid in a groove of the door framework; the door frame 3 is formed by welding four straight planes and four circular arcs. The second part plate is provided with an inflation joint 1, and the inflation joint 1 is communicated with the inflation sealing strip 5.

The door plate 2 is hinged with the door frame 3, and four vertex angles of the door plate 2 are provided with door plate 2 circular arcs which are matched with the arc-shaped chamfer 7; the inflatable sealing strip 5 is circumferentially arranged on the side wall of the door plate 2; for sealing the gap between the door panel 2 and the door frame 3; when the door plate 2 is in a closed state, the inflatable sealing strip 5 is in an inflated state, and the door plate 2 and the door frame 3 are sealed; when the door panel 2 is in the non-closed state, the inflatable sealing strip 5 is in the non-inflated state.

As shown in figures 4-5, the device adopts a unique sealing process of the inflatable sealing strip 5, and four corners adopt the arc transition of the door plate 2 to ensure the tightness of the door body. The air pressure control system releases air in the air sealing strip 5 through the air inflation joint 1 by the electromagnetic valve when the door is opened, so that the air sealing strip 5 is deflated and contracted in the groove. When the door is closed, the inflatable sealing strip 5 is inflated, and the protruding groove presses the inner side of the door frame 3, so that a tight seal is formed between the door and the door frame 3, and the door is tightly locked by the electromagnetic lock.

The specific implementation mode is as follows: the air source is connected, the hand slide valve is opened, and the inflation pressure value is set. When the airtight door is closed and a door closing button is pressed, the door body and the door frame 3 are attracted by the electromagnetic lock, an electromagnetic lock feedback signal is fed back to the electromagnetic valve at the front end of the air storage tank after the electromagnetic lock is attracted, whether the electromagnetic valve at the rear end of the air storage tank is closed or not is detected, the electromagnetic valve at the front end is electrified to form a passage, gas is filled into the air storage tank, meanwhile, the gas in the air storage tank enters the inflatable sealing strip 5, the inflatable sealing strip 5 is in an inflated state, until the air pressure in the air storage tank and the inflatable sealing strip 5 reaches a set value, a pressure sensor connected with the air storage tank feeds back a signal to the electromagnetic valve at the front end of the air storage tank, the passage is disconnected by the electromagnetic valve, the inflation is stopped, and the sealing strip is extruded in contact with the end face of the door frame 3 at the moment to form pressure sealing, so that the sealing performance between the door body and the door frame 3 is ensured. And in the door closing state, the pressure in the air storage tank is detected in real time, when the pressure is lower than a set value, the air supply is continued, and when the pressure is higher than the set value, the air supply is stopped, and the circulation is performed.

When the door needs to be opened, after the door opening button is pressed, the system sends a signal to the electromagnetic valve at the rear end of the air storage tank, at the moment, the electromagnetic valve is electrified to form a passage, the air in the air storage tank and the sealing strip is released until the air storage tank and the sealing strip are in a normal pressure state, at the moment, the sealing strip is contracted and sunken, a gap is formed between the door frame 3 and the door body, the sealing state is relieved, and one working cycle is completed sequentially.

The inflatable sealing strip 5 is made of high-density ethylene propylene diene monomer material, is resistant to corrosion by disinfectants such as formaldehyde, gasified hydrogen peroxide, gaseous chlorine dioxide and the like, can be independently used or used in a plurality of sets of combinations, has the characteristics of single door control or multi-door interlocking and the like, is safe and reliable, and is widely applied to the sanitary and safe fields such as high-grade biosafety laboratories, disinfection rooms, isolation rooms and the like.

In some embodiments, the door panel 2 is provided with a viewing window 4. Facilitating viewing through the viewing window.

The airtight door provided by the application ensures the tightness between the door body and the door frame 3, reduces gas leakage, has a protective effect on places with biological potential safety hazards, reduces air supply quantity for clean spaces with air tightness requirements, saves energy consumption, and meanwhile, further ensures sealing effect and prolongs the service life of sealing strips due to the circular arc door plate 2 structure around.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. A door with pneumatic means, comprising:

the door comprises a door frame, wherein four inner corners of one side surface of the door frame are provided with arc chamfers;

the door plate is hinged with the door frame, and four vertex angles of the door plate are provided with door plate circular arcs matched with the arc-shaped chamfer angles;

the inflatable sealing strip is circumferentially arranged on the side wall of the door plate; the sealing device is used for sealing a gap between the door plate and the door frame;

when the door plate is in a closed state, the inflatable sealing strip is in an inflated state, and the door plate and the door frame are sealed;

when the door panel is in a non-closed state, the inflatable sealing strip is in a non-inflated state.

2. The airtight door with air pressure device according to claim 1, wherein the door frame is a closed rectangle, and a first step arranged circumferentially is provided at one side of the door frame; the door plate comprises a first part plate and a second part plate with a projection surface larger than that of the first part plate, the first part plate and the second part plate are in a convex shape, the first part plate is arranged in the door frame, and meanwhile, the second part plate is arranged in the first step; the door plate is arranged on the first part plate in an arc manner; the side wall of the first part plate is provided with a groove which is circumferentially arranged, and the inflatable sealing strip is arranged in the groove.

3. A gas-pressure device-equipped airtight door as claimed in claim 2, wherein the second partial plate is provided with an inflation connector, and the inflation connector communicates with the inflation sealing strip.

4. The airtight door with air pressure device according to claim 1, wherein the door plate is provided with a viewing window.

5. The air pressure device door of claim 2, wherein the first and second partial plates are integrally formed.

6. The airtight door with air pressure device according to claim 1, wherein the door plate comprises a convex skeleton and a heat insulation material filled in the skeleton; a panel is arranged outside the framework.