Wind direction adjusting structure of positive pressure air inlet fan

Abstract

The utility model discloses a wind direction adjusting structure of a positive pressure air inlet fan, which belongs to the technical field of fan adjusting structures, and comprises a base, a plurality of connecting sheet bodies arranged on the base, an angle adjusting support arranged on the base, a positive pressure air feeder erected on the angle adjusting support, and a wind direction adjusting plate group arranged on the front side of the positive pressure air feeder, the angle adjusting support comprises a fixed support and a movable support, the tops of the fixed support and the movable support are rotationally connected with a first bracket and a second bracket respectively, and the angle adjusting support further comprises a position fixing mechanism used for limiting movement of the movable support. According to the technical scheme, the fixed support and the movable support work in a combined mode to achieve the supporting effect on the positive pressure air feeder, when the air direction is adjusted, the positive pressure air feeder can rotate around the fixed support to change the air direction, and in the adjusting process, the movable support can synchronously move to achieve the supporting effect on the rear portion of the positive pressure air feeder. After the wind direction is adjusted, the position of the movable support is fixed through the position fixing mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of fan adjustment structures, in particular to a wind direction adjustment structure of a positive pressure air inlet fan. Background Art

[0002] Positive pressure fans are fans that supply air to escape stairways. They bring outdoor air pressure into the interior. When a building fire occurs, smoke, carbon monoxide, and other toxic gases are produced, obscuring visibility. Positive pressure fans supply air to escape stairways, preventing smoke from reaching the stairways and creating conditions for escape. Positive pressure fans are typically installed on the roof of a building and are linked to positive pressure dampers on each floor. At the initial stage of a fire, the dampers are opened, activating the positive pressure fans to maintain positive pressure (air supply) in the stairwells and elevator halls.

[0003] The working occasions of positive pressure blowers can be roughly divided into two types. One is fixedly installed on the roof, and the other is temporarily used to supply air. The working scenes may be varied, but no matter which working occasion, the positive pressure blower can usually only blow air in one direction when working. It is impossible to freely adjust the wind direction of the air supply according to the actual situation and usage requirements, which brings many inconveniences to the use. Therefore, a wind direction adjustment structure of a positive pressure air inlet fan is proposed to address the above problems. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a wind direction adjustment structure for a positive pressure air intake fan. The fan adjustment structure can realize a supporting effect on the positive pressure blower through the combined work of a fixed bracket and a movable bracket. When the wind direction is adjusted, the positive pressure blower can be rotated around the fixed bracket to change the wind direction. During the adjustment process, the movable bracket can move synchronously to support the rear of the positive pressure blower. When the wind direction adjustment is completed, the position of the movable bracket is fixed by a position fixing mechanism. At this time, the inclination angle of the positive pressure blower is fixed and cannot be changed further. In addition, the wind direction adjustment plate group can guide the blown air flow and can also guide the air flow within a certain range. It solves the technical problem in the prior art that the positive pressure blower can usually only blow in one direction when working and cannot freely adjust the air supply direction according to actual conditions and usage requirements.

[0005] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0006] A wind direction adjustment structure for a positive pressure air inlet fan comprises a base provided with a plurality of connecting plates, an angle adjustment support provided on the base with a positive pressure blower mounted thereon, and a wind direction adjustment plate group installed on the front side of the positive pressure blower; wherein the angle adjustment support comprises a fixed bracket and a movable bracket, the tops of the two brackets being rotatably connected to a first bracket and a second bracket respectively, the first bracket and the second bracket being fixedly connected to the positive pressure blower, and in addition, the angle adjustment support also comprises a position fixing mechanism for limiting the movement of the movable bracket.

[0007] Through the above-mentioned structural form, the positive pressure blower can be supported by the combination of the fixed bracket and the movable bracket. When the wind direction is adjusted, the positive pressure blower can be rotated around the fixed bracket to change the wind direction. During the adjustment process, the movable bracket can move synchronously to support the rear of the positive pressure blower. When the wind direction adjustment is completed, the position of the movable bracket is fixed by the position fixing mechanism. At this time, the inclination angle of the positive pressure blower is fixed and cannot be changed further. In addition, the wind direction adjustment plate group can guide the blown airflow, and can also guide the airflow within a certain range.

[0008] In a possible implementation, the movable bracket includes a guide rod, a sliding sleeve is slidably sleeved on the guide rod, a support rod is rotatably connected to the outer side of the sliding sleeve, and the top end of the support rod is rotatably connected to the second bracket.

[0009] Through the above-mentioned structural form, when the positive pressure blower rotates around the fixed bracket, the sliding sleeve slides synchronously on the guide rod, thereby changing the inclination angle of the support rod, so that it can play an effective supporting role without hindering the rotation of the positive pressure blower.

[0010] In a possible implementation, both ends of the guide rod are fixedly connected to the fixed bracket and the connecting sheet on the base, respectively, and a gap is left between the guide rod and the base.

[0011] The above structure can fix the guide rod and at the same time, the gap between the guide rod and the base can ensure that the sliding sleeve and the bottom end of the support rod will not rub against the base when sliding.

[0012] In one possible implementation, the position fixing mechanism includes a slide rail on which a sliding table is slidably arranged, a connecting plate, the two ends of which are fixedly connected to the sliding table and the sliding sleeve respectively, and a screw rod, which is threadedly connected to the sliding table and has a handwheel fixedly connected to its end.

[0013] Through the above-mentioned structural form, the screw can be rotated by turning the handwheel to drive the sliding platform to move forward and backward. When the sliding platform moves, the sliding sleeve will also move. Finally, the rear part of the positive pressure blower can be lifted or lowered by the support rod, so that its working angle changes, thereby adjusting the wind direction.

[0014] In a possible implementation, the rear end of the screw rod is rotatably connected to the connecting plate of the sliding platform, and the front end of the screw rod is rotatably connected to the connecting plate of the sliding platform.

[0015] With the above-mentioned structural form, the screw rod can be suspended in the air without hindering its normal rotation.

[0016] In one possible implementation, the wind direction adjustment plate group includes a fixed ring frame fixedly installed on the front side of the positive pressure blower, and multiple groups of protruding heads are fixed on the fixed ring frame. The front part of the protruding head is rotatably connected to the guide plate through a rotating shaft.

[0017] Through the above-mentioned structural form, the guide plate with adjustable inclination angle can guide the flow direction of the blown air flow, so that the wind direction adjustment plate group as a whole can also play an auxiliary role in adjusting the wind direction, thereby improving convenience during use.

[0018] In a possible implementation, a limiting clip is fixedly sleeved on the rotating shaft on one side of the guide plate, and a locking nut is threadedly connected to the rotating shaft on the other side.

[0019] With the above structure, when the inclination angle of the guide plate is adjusted, the locking nut is tightened, which can work in combination with the limiting clip to fix the inclination angle of the guide plate through the friction between each and the protruding head.

[0020] In a possible implementation, the base is made of concrete, and a plurality of steel connectors are pre-embedded therein for fixed connection with the angle adjustment support.

[0021] The above-mentioned structural form provides the necessary structural foundation for the overall fixed installation of the angle adjustment support.

[0022] In summary, the present invention has the following beneficial technical effects:

[0023] The positive pressure blower can be supported by the combination of the fixed bracket and the movable bracket. When the wind direction is adjusted, the positive pressure blower can be rotated around the fixed bracket to change the wind direction. During the adjustment process, the movable bracket can move synchronously to support the rear of the positive pressure blower. When the wind direction adjustment is completed, the position of the movable bracket is fixed by the position fixing mechanism. At this time, the inclination angle of the positive pressure blower is fixed and cannot be changed further. In addition, the wind direction adjustment plate group can guide the blown airflow and can also guide the airflow within a certain range. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the angle adjustment support structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the position fixing mechanism structure of the utility model;

[0028] Figure 4 This is a structural diagram of the wind direction adjustment plate group of the utility model.

[0029] In the figure: 1. Base; 2. Angle adjustment support; 21. Fixed bracket; 22. Movable bracket; 221. Guide rod; 222. Sliding sleeve; 223. Support rod; 231. First bracket; 232. Second bracket; 24. Position fixing mechanism; 241. Slide rail; 242. Sliding table; 243. Connecting plate; 244. Screw rod; 245. Handwheel; 3. Positive pressure blower; 4. Wind direction adjustment plate group; 41. Fixing ring frame; 42. Extension head; 43. Guide plate; 431. Rotating shaft; 44. Locking nut; 45. Limiting clip. DETAILED DESCRIPTION

[0030] The technical solution in the embodiments of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0031] like Figure 1 - Figure 2 As shown, the present embodiment provides a wind direction adjustment structure of a positive pressure air intake fan, including a base 1, which is provided with a plurality of connecting plates, an angle adjustment support 2, which is arranged on the base 1, and a positive pressure blower 3 is mounted on it, and a wind direction adjustment plate group 4, which is installed on the front side of the positive pressure blower 3, wherein the angle adjustment support 2 includes a fixed bracket 21 and a movable bracket 22, and the tops of the above two are respectively rotatably connected with a first bracket 231 and a second bracket 232, and the first bracket 231 and the second bracket 232 are both fixedly connected to the positive pressure blower 3. Through the above structural form, the fixed bracket 21 and the movable bracket 22 can work in combination to achieve a supporting effect on the positive pressure blower 3. When adjusting the wind direction, the positive pressure blower 3 can be rotated around the fixed bracket 21 to change the wind direction. During the adjustment process, the movable bracket 22 can move synchronously to support the rear of the positive pressure blower 3. At the same time, the wind direction adjustment plate group 4 can guide the blown airflow, and can also guide the airflow within a certain range.

[0032] In addition, the angle adjustment support 2 also includes a position fixing mechanism 24 for limiting the movement of the movable bracket 22. When the wind direction adjustment is completed, the position fixing mechanism 24 is used to fix the position of the movable bracket 22. At this time, the inclination angle of the positive pressure blower 3 is fixed and cannot be changed further.

[0033] The base 1 is made of concrete and has several steel connectors embedded therein for fixed connection with the angle adjustment support 2. The above structure provides the necessary structural foundation for the overall fixed installation of the angle adjustment support 2.

[0034] like Figure 2 As shown, the movable bracket 22 includes a guide rod 221, on which a sliding sleeve 222 is slidably mounted. A support rod 223 is rotatably connected to the outer side of the sliding sleeve 222, and the top end of the support rod 223 is rotatably connected to the second bracket 232. With the above-mentioned structure, when the positive pressure blower 3 rotates around the fixed bracket 21, the sliding sleeve 222 synchronously slides on the guide rod 221, thereby changing the inclination angle of the support rod 223, so that it can effectively support the positive pressure blower 3 without hindering the rotation.

[0035] In addition, the two ends of the guide rod 221 are respectively fixedly connected to the fixing bracket 21 and the connecting sheet on the base 1, and a gap is left between the guide rod 221 and the base 1. Through the above-mentioned structural form, the guide rod 221 can be fixedly installed. At the same time, the gap left between the guide rod 221 and the base 1 can also ensure that the sliding sleeve 222 and the bottom end of the support rod 223 will not rub against the base 1 when sliding.

[0036] like Figure 3 As shown, the position fixing mechanism 24 includes a slide rail 241, on which a sliding platform 242 is slidingly arranged, a connecting plate 243, both ends of which are fixedly connected to the sliding platform 242 and the sliding sleeve 222 respectively, a screw rod 244, which is threadedly connected to the sliding platform 242, and a hand wheel 245 is fixedly connected to the end thereof. Through the above-mentioned structural form, the screw rod 244 can be rotated by turning the hand wheel 245, thereby driving the sliding platform 242 to move forward and backward. When the sliding platform 242 moves, it will also drive the sliding sleeve 222 to move. Finally, the rear part of the positive pressure blower 3 is lifted or lowered by the support rod 223, so that its working angle changes, thereby playing a role in adjusting the wind direction.

[0037] In addition, the rear end of the screw rod 244 is rotatably connected to the connecting plate of the sliding table 242, and the front part of the screw rod 244 is rotatably connected to the connecting plate of the sliding table 242. Through the above-mentioned structural form, the screw rod 244 can be suspended in the air without hindering its normal rotation.

[0038] like Figure 4As shown, the wind direction adjustment plate group 4 includes a fixed ring frame 41 fixedly installed on the front side of the positive pressure blower 3, and a plurality of groups of protruding heads 42 are fixedly provided on the fixed ring frame 41. The front part of the protruding head 42 is rotatably connected to the guide plate 43 through the rotating shaft 431. Through the above-mentioned structural form, the guide plate 43 with adjustable inclination angle can guide the flow direction of the blown air flow, so that the wind direction adjustment plate group 4 as a whole can also play an auxiliary role in adjusting the wind direction, thereby improving the convenience during use.

[0039] At the same time, a limiting clip 45 is fixedly sleeved on the rotating shaft 431 on one side of the guide plate 43, and a locking nut 44 is threadedly connected to the rotating shaft 431 on the other side. When the inclination angle of the guide plate 43 is adjusted, the locking nut 44 is tightened, which can work in combination with the limiting clip 45 to fix the inclination angle of the guide plate 43 through the friction between each and the protruding head 42.

[0040] The use principle and use process of this utility model:

[0041] The positive pressure blower 3 can be supported by the combination of the fixed bracket 21 and the movable bracket 22. When the wind direction is adjusted, the positive pressure blower 3 can be rotated around the fixed bracket 21 to change the wind direction. During the adjustment process, the movable bracket 22 can move synchronously to support the rear of the positive pressure blower 3. When the wind direction adjustment is completed, the position of the movable bracket 22 is fixed by the position fixing mechanism 24. At this time, the inclination angle of the positive pressure blower 3 is fixed and cannot be changed further.

[0042] In addition, the wind direction adjustment plate group 4 can guide the blown air flow, and can also guide the flow within a certain range. Specifically, the guide plate 43 with an adjustable inclination angle can guide the flow direction of the blown air flow, so that the wind direction adjustment plate group 4 as a whole can also play an auxiliary role in adjusting the wind direction, thereby improving the convenience during use.

[0043] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A wind direction adjustment structure for a positive pressure air inlet fan, characterized in that: include: A base (1) is provided with a plurality of connecting plates; An angle adjustment support (2) is provided on the base (1) and a positive pressure blower (3) is mounted on the support; A wind direction adjustment plate group (4) is installed on the front side of the positive pressure blower (3); The angle adjustment support (2) includes a fixed bracket (21) and a movable bracket (22), the tops of which are rotatably connected to a first bracket (231) and a second bracket (232), respectively, the first bracket (231) and the second bracket (232) are both fixedly connected to the positive pressure blower (3), wherein the movable bracket (22) includes a guide rod (221), a sliding sleeve (222) is slidably sleeved on the guide rod (221), a support rod (223) is rotatably connected to the outer side of the sliding sleeve (222), and the top end of the support rod (223) is rotatably connected to the second bracket (232); The angle adjustment support (2) further includes a position fixing mechanism (24) for limiting the movement of the movable bracket (22), which includes: a slide rail (241), on which a slide platform (242) is slidably provided; a connecting plate (243), the two ends of which are respectively fixedly connected to the slide platform (242) and the sliding sleeve (222); a screw rod (244), which is threadedly connected to the slide platform (242) and the end of which is fixedly connected to a hand wheel (245); The rear end of the screw rod (244) is rotatably connected to the connecting piece of the sliding platform (242), and the front end of the screw rod (244) is rotatably connected to the connecting piece of the sliding platform (242).

2. The wind direction adjustment structure of a positive pressure air inlet fan according to claim 1, characterized in that: The two ends of the guide rod (221) are fixedly connected to the fixed bracket (21) and the connecting sheet on the base (1), respectively, and a gap is left between the guide rod (221) and the base (1).

3. The wind direction adjustment structure of a positive pressure air inlet fan according to claim 1, characterized in that: The wind direction adjustment plate group (4) comprises a fixed ring frame (41) fixedly mounted on the front side of the positive pressure blower (3); a plurality of groups of protruding heads (42) are fixedly arranged on the fixed ring frame (41); the front portion of the protruding heads (42) is rotatably connected to a guide plate (43) via a rotating shaft (431).

4. The wind direction adjustment structure of a positive pressure air inlet fan according to claim 3, characterized in that: A limiting clip (45) is fixedly sleeved on the rotating shaft (431) on one side of the guide plate (43), and a locking nut (44) is threadedly connected to the rotating shaft (431) on the other side.

5. The wind direction adjustment structure of a positive pressure air inlet fan according to claim 1, characterized in that: The base (1) is made of concrete and has a plurality of steel connectors embedded therein for fixed connection with the angle adjustment support (2).

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