Ventilation device for civil air defense safety engineering

Abstract

The utility model discloses a ventilation device for civil air defense safety engineering, relates to the technical field of civil air defense engineering, and aims to solve the technical problems that the exhaust efficiency of a fan connected to a circular ventilation pipeline cannot be improved by replacing the fan, the exhaust efficiency is inconvenient to adjust, and the limitation is high when the fan is used. Comprising a fixed shell provided with an access hole and a movable shell hinged to the interior of the access hole, a support is fixedly installed in the middle of one side in the movable shell, a motor located in the center of the interior of the fixed shell is detachably installed on one side of the support, and a flow guide mechanism used for pushing airflow to flow is fixedly installed at one end of a motor shaft of the motor; the flow guide mechanism comprises two end plates and a driving bevel gear. The blade inclination angle adjusting function is achieved, the pushing efficiency of the blades to airflow when the blades rotate can be improved, the adjusting action can be conveniently and rapidly carried out when the blade is put into use, and the ventilation effect can be improved when civil air defense engineering is put into use.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense engineering, and more specifically, to a ventilation device for civil air defense safety engineering. Background Art

[0002] Civil air defense safety projects refer to civil air defense projects, which refer to underground protective buildings built separately to ensure the shelter of personnel and materials, civil air defense command, and medical rescue in wartime, as well as basements that can be used for air defense in wartime built in combination with ground buildings. Ventilation devices are required for ventilation in civil air defense installation projects. During the ventilation process of the ventilation devices, fans are required to speed up the air flow rate to improve the efficiency of air exhaust.

[0003] However, when the fan in the prior art is discharging air for ventilation, the fan is mainly rotated by the motor, and the multiple blades on the fan rotate around the motor shaft, thereby achieving the effect of axial flow guidance.

[0004] However, since civil air defense projects have high exhaust efficiency requirements for fans connected to circular ventilation ducts, they are mainly used as underground facilities such as parking lots when not in use, and have low requirements for diversion effects. However, after being put into use, there is an urgent need to improve the diversion effect to ensure the ventilation effect of civil air defense projects. However, after the fan is installed, the exhaust efficiency cannot be improved by replacing the fan, and the use is very limited. In view of this, we propose a ventilation device for civil air defense safety projects. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, adapt to actual needs, and provide a ventilation device for civil air defense safety engineering to solve the technical problems that the fan currently connected to the circular ventilation duct cannot improve the exhaust efficiency by replacing the fan, is not convenient for adjusting the exhaust efficiency, and has high limitations when used.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a ventilation device for civil air defense safety engineering, comprising a fixed shell with an inspection opening and a movable shell hingedly connected to the inspection opening;

[0007] A bracket is fixedly installed in the center of one side of the movable shell, and a motor located in the center of the fixed shell is detachably installed on one side of the bracket, and a guide mechanism for promoting air flow is fixedly installed on one end of the motor shaft of the motor;

[0008] The flow guide mechanism includes two end plates fixedly mounted on the motor shaft of the motor and a driving bevel gear rotatably mounted on the motor shaft of the motor. A plurality of meshing mechanisms engaging with the driving bevel gear are arranged in an annular array between the facing surfaces of the two end plates, and a blade is installed on the side of the meshing mechanism away from the driving bevel gear.

[0009] The side of the active bevel gear facing the motor is configured with an inner gear ring, and an adjusting knob is rotatably mounted on one side of the end plate. An adjusting gear meshing with the inner gear ring is fixedly mounted on one end of the adjusting knob passing through the end plate.

[0010] The utility model drives the guide mechanism to rotate by an electric motor to achieve rapid promotion of air in a fixed shell and realize air diversion. When adjusting the diversion efficiency, the movable shell can be opened and the adjustment knob equipped with an adjustment gear can be turned by a tool to rotate, thereby driving the active bevel gear provided with an internal gear ring to rotate with the motor shaft of the electric motor as the axis, and cooperating with a plurality of meshing mechanisms to synchronously drive multiple blades to rotate, thereby realizing the adjustment of the blade inclination angle, so as to improve its promotion efficiency of the airflow during rotation and realize the air diversion effect, so as to improve the ventilation effect when the civil air defense project is put into use, and facilitate convenient adjustment when it is put into use.

[0011] Preferably, the engagement mechanism includes a fixing seat A and a fixing seat B, the fixing seat A and the fixing seat B are detachably connected, and the fixing seat A and the fixing seat B are detachably connected to the two end plates respectively.

[0012] Preferably, a transmission shaft is rotatably installed between the fixing seat A and the fixing seat B, one end of the transmission shaft is fixedly connected to the blade, and the other end of the transmission shaft is fixedly installed with a driven bevel gear meshing with the driving bevel gear.

[0013] Preferably, a plurality of the blades form an adjustable fan blade group for pushing the air flow, and the adjustable fan blade group realizes the axial flow action of the air.

[0014] Preferably, two hinged seats are symmetrically provided on the outer edge surface of the fixed shell at one side of the inspection port, and two hanging seats are symmetrically provided on one end of the outer edge surface of the movable shell.

[0015] Preferably, a hanging shaft is hingedly installed in the hinge seat, and one end of the hanging shaft passes through the hanging seat and is threadedly fitted with a locking knob that abuts against the hanging seat.

[0016] Preferably, a plurality of guide vanes are provided in a circular distribution on a side of the fixed housing away from the motor, and an airflow detector is constructed between the facing ends of the plurality of guide vanes.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The utility model drives the guide mechanism to rotate by an electric motor to achieve rapid promotion of air in a fixed shell and realize air diversion. When adjusting the diversion efficiency, the movable shell can be opened and the adjustment knob equipped with an adjustment gear can be turned by a tool to rotate, thereby driving the active bevel gear provided with an internal gear ring to rotate with the motor shaft of the electric motor as the axis, and cooperating with a plurality of meshing mechanisms to synchronously drive multiple blades to rotate, thereby realizing the adjustment of the blade inclination angle, so as to improve its promotion efficiency for airflow during rotation and realize the air diversion effect, so as to improve the ventilation effect when the civil air defense project is put into use, and facilitate convenient adjustment when it is put into use.

[0019] 2. The utility model can also remove the two hanging shafts from the two hanging seats by twisting the two locking knobs. After removal, the movable shell can be rotated to expose the inspection port on the fixed shell, which is convenient for inspection and maintenance and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram of the utility model in use when connected to a ventilation duct;

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the utility model in the unfolded state;

[0023] Figure 4 This is a schematic diagram of the structure of the motor and the flow guide mechanism in the present utility model in a coordinated state;

[0024] Figure 5 This is a partial structural diagram of the flow guide mechanism in the present invention in a cross-sectional state;

[0025] Figure 6 This is a partial structural diagram of the flow guide mechanism of the present invention, showing the cooperation between the inner gear ring and the adjustment gear in a cross-sectional view;

[0026] Figure 7 It is a structural schematic diagram of the blade and the meshing mechanism in the present invention in a mating state.

[0027] Description of the numbers in the figure:

[0028] 1. Fixed housing; 2. Movable housing; 3. Motor; 4. Guide mechanism; 401. End plate; 402. Active bevel gear; 403. Blade; 404. Internal gear ring; 405. Adjusting gear; 406. Adjusting knob; 5. Engaging mechanism; 501. Fixed seat A; 502. Fixed seat B; 503. Transmission shaft; 504. Driven bevel gear; 6. Guide vane; 7. Articulated seat; 8. Mounting seat; 9. Mounting shaft; 10. Locking knob. DETAILED DESCRIPTION

[0029] like Figure 1 、 Figure 2 As shown, the utility model relates to a ventilation device for civil air defense engineering, comprising a fixed shell 1 with an inspection opening and a movable shell 2 hingedly connected to the inspection opening;

[0030] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, in the embodiment of the present utility model, in order to facilitate convenient adjustment when it is put into use, a bracket is fixedly installed in the center of one side of the movable shell 2, and a motor 3 located in the center of the fixed shell 1 is detachably installed on one side of the bracket, and a guide mechanism 4 for promoting air flow is fixedly installed at one end of the motor shaft of the motor 3, and the guide mechanism 4 includes two end plates 401 fixedly installed on the motor shaft of the motor 3 and a driving bevel gear 402 rotatably arranged on the motor shaft of the motor 3, and a plurality of meshing mechanisms 5 meshing with the driving bevel gear 402 are arranged in an annular array between the facing surfaces of the two end plates 401, and a blade 403 is installed on the side of the meshing mechanism 5 away from the driving bevel gear 402, and an internal gear ring 404 is constructed on the side of the driving bevel gear 402 facing the motor 3, and one side of the end plate 401 rotates An adjusting knob 406 is installed, and the adjusting knob 406 passes through one end of the end plate 401 and is fixedly installed with an adjusting gear 405 meshing with the inner gear ring 404. The motor 3 drives the guide mechanism 4 to rotate to achieve rapid promotion of air in the fixed shell 1 and achieve air diversion. When adjusting the diversion efficiency, the movable shell 2 can be opened to use a tool to rotate the adjusting knob 406 installed with the adjusting gear 405, thereby driving the active bevel gear 402 provided with the inner gear ring 404 to rotate with the motor shaft of the motor 3 as the axis, and cooperate with several meshing mechanisms 5 to synchronously drive multiple blades 403 to rotate, so as to achieve adjustment of the inclination angle of the blade 403, so as to improve its driving efficiency for the airflow during rotation and achieve the air diversion effect, so as to improve the ventilation effect when the civil air defense project is put into use, and facilitate convenient adjustment when it is put into use.

[0031] like Figure 5 、 Figure 6 、 Figure 7 As shown, in an embodiment of the present invention, in order to improve the stability of the rotation of several blades 403, the engagement mechanism 5 includes a fixed seat A501 and a fixed seat B502, the fixed seat A501 and the fixed seat B502 are detachably connected, and the fixed seat A501 and the fixed seat B502 are detachably connected to the two end plates 401 respectively, a transmission shaft 503 is rotatably installed between the fixed seat A501 and the fixed seat B502, and one end of the transmission shaft 503 is fixedly connected to the blade 403, and the other end of the transmission shaft 503 is fixedly connected to the blade 403. A driven bevel gear 504 is fixedly installed and meshes with the active bevel gear 402. Several of the blades 403 form an adjustable fan blade group for pushing the air flow, and the adjustable fan blade group realizes the axial flow of air. Through the rotation of the active bevel gear 402, several transmission shafts 503 equipped with driven bevel gears 504 can be synchronously driven to rotate, thereby driving the blades 403 to rotate through the transmission shaft 503, and the stability during rotation is relatively high. By driving the active bevel gear 402, several blades 403 can be synchronously driven to rotate, and the stability of rotation is relatively high.

[0032] like Figure 2 、 Figure 3 As shown, in the embodiment of the present utility model, in order to facilitate inspection and maintenance, two hinged seats 7 are symmetrically provided on the outer edge surface of the fixed shell 1 on one side of the inspection port, and two hanging seats 8 are symmetrically provided at one end of the outer edge surface of the movable shell 2, a hanging shaft 9 is hingedly installed in the hinged seat 7, and the hanging shaft 9 passes through one end of the hanging seat 8 and is threadedly fitted with a locking knob 10 that abuts against the hanging seat 8, a plurality of guide vanes 6 are annularly distributed on the side of the fixed shell 1 away from the motor 3, and an airflow detector is jointly constructed between the opposite ends of the guide vanes 6, and the two hanging shafts 9 are respectively taken out from the two hanging seats 8 by twisting the two locking knobs 10. After taking out, the movable shell 2 can be rotated to expose the inspection port on the fixed shell 1, which is convenient for inspection and maintenance and has strong practicality.

[0033] Working principle: This embodiment provides a ventilation device for civil air defense safety projects. When in use, the device is installed at one end of the ventilation duct. When ventilation is needed, the motor 3 can be started to drive the guide mechanism 4 to rotate, and the air is pushed out through multiple blades 403 to achieve ventilation for the civil air defense project. When the civil air defense project is put into use, the movable shell 2 can be opened, and the adjustment knob 406 equipped with the adjustment gear 405 can be rotated by using a tool, thereby driving the active bevel gear 402 equipped with an internal gear ring 404 to rotate with the motor shaft of the motor 3 as the axis, and cooperating with several transmission shafts 503 equipped with driven bevel gears 504 to synchronously drive the multiple blades 403 to rotate, thereby achieving the adjustment of the inclination angle of the blades 403, so as to improve its driving efficiency for the airflow during rotation, and achieve the air diversion effect, so as to improve the ventilation effect when the civil air defense project is put into use, and facilitate convenient adjustment after it is put into use.

[0034] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A ventilation device for civil air defense engineering, characterized in that: It comprises a fixed shell (1) with an inspection opening and a movable shell (2) hingedly connected to the inspection opening; A bracket is fixedly mounted in the center of one side of the movable housing (2), and a motor (3) located in the center of the fixed housing (1) is detachably mounted on one side of the bracket, and a flow guide mechanism (4) for promoting airflow is fixedly mounted on one end of the motor shaft of the motor (3); The flow guide mechanism (4) comprises two end plates (401) fixedly mounted on the motor shaft of the motor (3) and a driving bevel gear (402) rotatably mounted on the motor shaft of the motor (3); a plurality of meshing mechanisms (5) meshing with the driving bevel gear (402) are arranged in an annular array between the facing surfaces of the two end plates (401); and a blade (403) is mounted on a side of the meshing mechanism (5) away from the driving bevel gear (402); An inner gear ring (404) is formed on the side of the active bevel gear (402) facing the motor (3), and an adjusting knob (406) is rotatably mounted on one side of the end plate (401). An adjusting gear (405) meshing with the inner gear ring (404) is fixedly mounted on one end of the adjusting knob (406) passing through the end plate (401).

2. The ventilation device for civil air defense engineering according to claim 1, characterized in that: The engagement mechanism (5) comprises a fixing seat A (501) and a fixing seat B (502), wherein the fixing seat A (501) and the fixing seat B (502) are detachably connected, and the fixing seat A (501) and the fixing seat B (502) are detachably connected to the two end plates (401) respectively.

3. The ventilation device for civil air defense engineering according to claim 2, characterized in that: A transmission shaft (503) is rotatably mounted between the fixed seat A (501) and the fixed seat B (502), one end of the transmission shaft (503) is fixedly connected to the blade (403), and the other end of the transmission shaft (503) is fixedly mounted with a driven bevel gear (504) meshing with the driving bevel gear (402).

4. The ventilation device for civil air defense engineering according to claim 1, characterized in that: A plurality of blades (403) form an adjustable fan blade group for pushing the air flow, and the adjustable fan blade group realizes the axial flow action of the air.

5. The ventilation device for civil air defense engineering according to claim 1, characterized in that: Two hinged seats (7) are symmetrically provided on the outer edge surface of the fixed shell (1) at one side of the inspection port, and two hanging seats (8) are symmetrically provided on one end of the outer edge surface of the movable shell (2).

6. The ventilation device for civil air defense engineering according to claim 5, characterized in that: A hanging shaft (9) is hingedly installed in the hinge seat (7), and one end of the hanging shaft (9) passes through the hanging seat (8) and is threadedly mounted with a locking knob (10) that abuts against the hanging seat (8).

7. The ventilation device for civil air defense engineering according to claim 1, characterized in that: A plurality of guide vanes (6) are provided in an annular distribution on a side of the fixed housing (1) away from the motor (3), and an airflow detector is constructed between the facing ends of the plurality of guide vanes (6).

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