Ventilation connecting piece for inflatable airtight door

Abstract

The utility model belongs to the technical field of connecting pieces for inflatable airtight doors, and particularly relates to a ventilated connecting piece for an inflatable airtight door, which comprises a first piece body, a second piece body and a rotating component, the first piece body and the second piece body are respectively provided with a first gas circuit connecting end and a second gas circuit connecting end, and the rotating component comprises a rotating base shaft. The two ends of the rotating base shaft are connected with the first piece body in a matched mode, the second gas circuit connecting end rotates with the rotating base shaft as the axis, and a first gas channel is formed in one end of the rotating base shaft and connected with the first gas circuit connecting end and the second gas circuit connecting end through a second gas channel and a third gas channel correspondingly. According to the door hinge, the function of hinged connection between the door frame and the door body can be achieved, the function of air channel connection can also be achieved, an air inflation hose installed in an exposed mode can be removed, the whole door hinge is more attractive, the service life can be prolonged to a great extent, and the risk of air leakage can be reduced to a great extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of connecting pieces for inflatable airtight doors, in particular to a ventilated connecting piece for inflatable airtight doors. Background Art

[0002] Inflatable airtight doors are typically used in rooms with high airtightness requirements in high-level biosafety laboratories, nuclear power plants, ships, and other facilities. They provide airtight isolation between different areas within the enclosure. In the biosafety field, airtight doors are primarily used in core workrooms of BSL-4 and ABSL-3 / 4 laboratories, adjacent airlocks, and chemical shower disinfection rooms.

[0003] Currently available inflatable airtight doors have inflatable rubber strips embedded around the door body. When the strips expand, they squeeze the door frame to create a seal. The strip's inflation hose is introduced from the door frame into the door body. This connects the door frame and door body via the inflation hose, ensuring air flow between the door frame and door body without affecting the door's free movement. However, this method leaves the inflation hose exposed, affecting the overall aesthetics. Furthermore, repeated opening and closing of the door accelerates aging of the inflation hose, reducing its service life and increasing the risk of leaks.

[0004] Our research and development direction is how to ensure that the air path between the door frame and the door body is connected while removing the exposed inflation hose. The door frame and the door body are both connected by hinged connectors (i.e. hinges). If you want to remove the inflation hose, you can only use the connectors as ventilation channels, so that it can realize both hinged connection functions and air path connection functions. Utility Model Content

[0005] The utility model provides a ventilated connecting piece for an inflatable airtight door, which can solve the problems pointed out in the background technology.

[0006] A ventilated connector for an inflatable airtight door comprises a first body, a second body and a rotating assembly, wherein a first air path connecting end and a second air path connecting end are respectively provided on the first body and the second body, and the rotating assembly comprises a rotating base shaft, both ends of the rotating base shaft are cooperatively connected with the first body, the second air path connecting end rotates around the rotating base shaft as the axis, a first air channel is opened at one end of the rotating base shaft, the first air channel is connected to the first air path connecting end and the second air path connecting end through a second air channel and a third air channel respectively, and the second air channel and the third air channel are respectively opened in the first body and the second body.

[0007] Preferably, the second air duct includes a first transverse air duct connected to the first air path connection end, a second vertical air duct connected to the first transverse air duct, and a third transverse air duct connected to the second vertical air duct, the third transverse air duct is connected to the air inlet end of the first air duct, and the third air duct includes a fourth transverse air duct, and the fourth transverse air duct is respectively connected to the air outlet end of the first air duct and the second air path connection end.

[0008] Preferably, the first transverse airway, the second vertical airway, the third transverse airway, and the fourth transverse airway are all blind holes extending inward from one side, and are respectively provided with blocking pieces on the outside thereof for blocking.

[0009] Preferably, a limiting plug is provided at one end of the rotating base shaft away from the first air channel, and the limiting plug is fixed to the first body by a set screw.

[0010] Preferably, a limiting screw is provided at one end of the rotating base shaft, and a limiting groove that cooperates with the limiting screw is provided at a corresponding position of the rotating base shaft.

[0011] Preferably, a first sealing member and a second sealing member are respectively provided at the connection between the first air channel and the second air channel and the third air channel to ensure the sealing of the entire air channel.

[0012] Preferably, the first sealing member is a sealing ring, which is arranged between the rotating base shaft and the first body, and the second sealing member is a sealing ring arranged on both sides of the air outlet end, which is located between the rotating base shaft and the second body.

[0013] Preferably, the rotating base shaft is fitted with a connecting sleeve, the second body is fitted with the connecting sleeve, and the connecting sleeve rotates integrally with the second body with the rotating base shaft as the axis.

[0014] Preferably, the shaft sleeve is a wear-resistant shaft sleeve, which is lined in the shaft hole of the second body and is tightly connected thereto.

[0015] Preferably, the wear-resistant sleeve is an engineering plastic wear-resistant sleeve.

[0016] Beneficial effect: The utility model provides a ventilated connector for an inflatable airtight door, which can realize the hinged connection function between the door frame and the door body, and the air path connection function. The exposed inflation hose can be removed, making the overall appearance more beautiful, and can greatly improve the service life and reduce the risk of air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional structural diagram and an airflow direction diagram of the utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the utility model.

[0019] Figure 3 This is a schematic diagram of the external structure of the utility model Figure 1 ,

[0020] Figure 4 This is a schematic diagram of the external structure of the utility model Figure 2 ,

[0021] Figure 5 This is a schematic diagram of the structure of the rotating base shaft of the utility model.

[0022] Figure 6 This is a cross-sectional schematic diagram of the rotating base shaft of the utility model.

[0023] Description of reference numerals:

[0024] Numbers in the figure: first body 1; second body 2; first air path connecting end 3; second air path connecting end 4; rotating base shaft 51; sleeve 52; first air duct 61, air inlet end 611; air outlet end 612; second air duct 62; first transverse air duct 621; second vertical air duct 622; third transverse air duct 623; third air duct 63; fourth transverse air duct 631; first sealing member 64; second sealing member 65; blocking member 66; limiting plug 7; set screw 8; limiting screw 9; limiting groove 10. DETAILED DESCRIPTION

[0025] A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0026] Example 1: Figure 1-6 As shown, a ventilated connector for an inflatable airtight door includes a first body 1, a second body 2, and a rotating assembly. The first body 1 and the second body 2 are respectively provided with a first air path connecting end 3 and a second air path connecting end 4. The first air path connecting end 3 and the second air path connecting end 4 are connecting air nozzles, which are used to connect with corresponding connecting air path ends on the door frame and the door body;

[0027] Special combination Figure 1 、 5 As shown in Figures 6 and 7, both ends of the rotating base shaft 51 are connected to the first body 1, and the second air path connecting end 4 rotates around the rotating base shaft 51. Both ends of the rotating base shaft 51 are connected to the first body 1. A first air channel 61 is opened at one end of the rotating base shaft 51. The first air channel 61 is connected to the first air path connecting end 3 and the second air path connecting end 4 through the second air channel 62 and the third air channel 63 respectively, and a first seal 64 and a second seal 65 are respectively provided at the connection to ensure the sealing of the entire air path. The second air channel 62 and the third air channel 63 are respectively opened in the first body 1 and the second body 2.

[0028] Specific, especially combined Figure 1 、 2 As shown, the second air channel 62 includes a first transverse air channel 621 connected to the first air path connection end 3, a second vertical air channel 622 connected to the first transverse air channel 621, and a third transverse air channel 623 connected to the second vertical air channel 622. The third transverse air channel 623 is connected to the air inlet end 611 of the first air channel 61. The third air channel 63 includes a fourth transverse air channel 631. The fourth transverse air channel 631 is respectively connected to the air outlet end 612 of the first air channel 61 and the second air path connection end 4. The air inlet end 611 is provided at one end of the rotating base shaft 51, and the air outlet end 612 is provided in the middle of the rotating base shaft 51 at a position corresponding to the third air channel 63.

[0029] Specific, especially combined Figure 1 、 5 As shown in FIG. 6 , the first sealing member 64 is a sealing ring, which is arranged between the rotating base shaft 51 and the first body 1 , and the second sealing member 65 is a sealing ring arranged on both sides of the air outlet end 612 , which is located between the rotating base shaft 51 and the second body 2 .

[0030] Special combination Figure 1 As shown, in order to facilitate processing and meet the processing technology, the first horizontal air channel 621, the second vertical air channel 622, the third horizontal air channel 623, and the fourth horizontal air channel 631 are all blind holes extending inward from one side, and are respectively provided with sealing parts 66 on the outside for sealing. The sealing parts 66 can be set screws.

[0031] Special combination Figure 1 、 2 As shown, a limiting plug 7 is provided at one end of the rotating base shaft 51 away from the first air channel 61 . The limiting plug 7 is fixed to the first body 1 by a set screw 8 . The limiting plug 7 is used to limit the rotating base shaft 51 and improve the aesthetics.

[0032] A limit screw 9 is provided at one end of the rotating base shaft 51, and a limit groove 10 is provided at the corresponding position of the rotating base shaft 51 to cooperate with the limit screw 9. The limit screw 9 limits the rotating base shaft 51 to prevent it from shaking left and right and moving up and down.

[0033] In some embodiments, the rotating assembly includes a rotating base shaft 51 and a sleeve 52. The sleeve 52 is fitted on the rotating base shaft 51, and the second body 2 is fitted and connected to the sleeve 52. The sleeve 52 rotates integrally with the second body 2 with the rotating base shaft 51 as the axis. The sleeve 52 and the first body 2 and the second body 1 have an interference fit, and after assembly, they become a tightly fitted whole. Specifically, the sleeve 52 is a wear-resistant sleeve, and the wear-resistant sleeve is an engineering plastic wear-resistant sleeve. Engineering plastics have excellent comprehensive properties, such as high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments. As the sleeve and the metal rotating base shaft, lubrication-free operation can be achieved.

[0034] The general processing steps of this utility model are:

[0035] Step 1: According to the process requirements, the first body 1 and the second body 2 are processed respectively, the corresponding fixing holes and shaft holes are processed, and the shaft sleeves 52 are lined at the corresponding shaft hole positions;

[0036] Step 2: According to the process requirements, the blind holes required for the first horizontal air channel 621, the second vertical air channel 622, the third horizontal air channel 623, and the fourth horizontal air channel 631 are respectively processed from one side, and the connector mounting holes are respectively processed at the ends of the first horizontal air channel 621 and the fourth horizontal air channel 631. The first air path connecting end 3 and the second air path connecting end 4 are respectively installed, and the blocking member 66 is installed at the outer end of the blind hole;

[0037] Step 3: According to the process requirements, the rotating base shaft 51 is processed, and the corresponding first air channel 61, the limiting groove 10, and the sealing ring installation groove are processed; and the corresponding sealing ring is installed in the sealing ring installation groove;

[0038] Step 4: Install the rotating base shaft 51. After the shaft holes of the first body 1 and the second body 2 are aligned and matched, insert the rotating base shaft 51 from one end to connect the first body 1 and the second body 2, and install the corresponding limit plug 7, set screw 8 and limit screw 9.

[0039] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A ventilated connector for an inflatable airtight door, comprising a first body (1), a second body (2) and a rotating assembly, characterized in that: The first body (1) and the second body (2) are respectively provided with a first air path connection end (3) and a second air path connection end (4); the rotating assembly comprises a rotating base shaft (51); both ends of the rotating base shaft (51) are connected to the first body (1); the second air path connection end (4) rotates with the rotating base shaft (51) as the axis; a first air channel (61) is opened at one end of the rotating base shaft (51); the first air channel (61) is connected to the first air path connection end (3) and the second air path connection end (4) through a second air channel (62) and a third air channel (63); the second air channel (62) and the third air channel (63) are respectively opened in the first body (1) and the second body (2).

2. The ventilated connector for an inflatable airtight door according to claim 1, characterized in that: The second air channel (62) includes a first transverse air channel (621) connected to the first air path connection end (3), a second vertical air channel (622) connected to the first transverse air channel (621), and a third transverse air channel (623) connected to the second vertical air channel (622), wherein the third transverse air channel (623) is connected to the air inlet end (611) of the first air channel (61), and the third air channel (63) includes a fourth transverse air channel (631), wherein the fourth transverse air channel (631) is connected to the air outlet end (612) of the first air channel (61) and the second air path connection end (4), respectively.

3. The ventilated connector for an inflatable airtight door according to claim 2, characterized in that: The first transverse airway (621), the second vertical airway (622), the third transverse airway (623), and the fourth transverse airway (631) are all blind holes extending inward from one side, and are respectively provided with a blocking piece (66) on the outside for blocking.

4. The ventilated connector for an inflatable airtight door according to claim 1, characterized in that: A limiting plug (7) is provided at one end of the rotating base shaft (51) away from the first air channel (61), and the limiting plug (7) is fixed to the first body (1) via a set screw (8).

5. The ventilated connector for an inflatable airtight door according to claim 1, characterized in that: A limiting screw (9) is provided at one end of the rotating base shaft (51), and a limiting groove (10) that cooperates with the limiting screw (9) is provided at a corresponding position of the rotating base shaft (51).

6. The ventilated connector for an inflatable airtight door according to claim 2, characterized in that: A first sealing member (64) and a second sealing member (65) are respectively provided at the connection points between the first air channel (61) and the second air channel (62) and the third air channel (63) to ensure the sealing of the entire air channel.

7. The ventilated connector for an inflatable airtight door according to claim 6, characterized in that: The first sealing member (64) is a sealing ring, which is arranged between the rotating base shaft (51) and the first body (1); the second sealing member (65) is a sealing ring arranged on both sides of the air outlet end (612), which is located between the rotating base shaft (51) and the second body (2).

8. The ventilated connector for an inflatable airtight door according to claim 1, characterized in that: The rotating base shaft (51) is fitted with a connecting sleeve (52), the second body (2) is fitted with the connecting sleeve (52), and the connecting sleeve (52) rotates integrally with the second body (2) with the rotating base shaft (51) as the axis.

9. The ventilated connector for an inflatable airtight door according to claim 8, characterized in that: The shaft sleeve (52) is a wear-resistant shaft sleeve, which is lined in the shaft hole of the second body (2) and is tightly connected thereto.

10. The ventilated connector for an inflatable airtight door according to claim 9, characterized in that: The wear-resistant shaft sleeve is an engineering plastic wear-resistant shaft sleeve.

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