Centrifugal fan used in multiple environments

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a centrifugal fan used in multiple environments, which comprises a fan shell and an air outlet, a support bottom frame is arranged below the fan shell, fixed screw tubes are fixed at four corners of the top surface of the support bottom frame, an adjusting screw rod is sleeved in each fixed screw tube in a threaded manner, and the air outlet of the fan shell is communicated with the adjusting screw rod. According to the utility model, through the four adjustable supporting legs, the levelness of the fan can be adjusted according to the flatness of the bottom surface of a use environment, the fan can be conveniently adjusted, the operation is convenient, the operation is convenient, the working efficiency is improved, the working efficiency is improved, and the working efficiency is improved. The centrifugal fan can be stably placed, the air outlet direction of the fan can be adjusted according to use requirements, the problems that the centrifugal fan is inconvenient to adapt to the bottom surfaces of different environments during use and the air outlet direction is single after the centrifugal fan is placed on the ground are solved, and the practicability of the centrifugal fan is greatly improved.

Description

Technical Field

[0001] The utility model application relates to the technical field of centrifugal fans, in particular to a centrifugal fan used in multiple environments. Background Art

[0002] Centrifugal fans are mechanical equipment that use mechanical energy to increase gas pressure and then transport the gas out. They are mainly composed of casing, impeller, shaft, collector, exhaust port, bearing housing, coupling, pulley and base. Their main functions include ventilation, smoke exhaust, heating and cooling processes. They are used for ventilation, air conditioning and dehumidification in buildings. They can also be used for mine ventilation, ship drainage, aquarium circulation and other applications.

[0003] Centrifugal fans have a wide range of applications, and can be used for ventilation and smoke exhaust inside user buildings as well as for ventilation outdoors. However, due to the large differences between indoor and outdoor environments, the fan needs to adapt to the bottom surfaces of different environments when it is placed. The current centrifugal fans are prone to being unstable when facing outdoor bottom surfaces with poor flatness, and the air outlet direction of the centrifugal fan is relatively single when placed flat. Utility Model Content

[0004] In order to solve the problem that the existing centrifugal fan is not convenient to adapt to the bottom of different environments when in use and the air outlet direction is relatively single after being placed on the ground, the utility model provides a centrifugal fan for use in multiple environments to solve the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A centrifugal fan for use in multiple environments comprises a fan casing and an air outlet, wherein a supporting bottom frame is arranged below the fan casing, and fixed screws are fixed at four corners of the top surface of the supporting bottom frame, an adjusting screw is threadedly sleeved inside each of the fixed screws, and a foot is fixed to one end of the adjusting screw extending below the fixed screw, a supporting cross plate is fixed to the middle part of the inner side of the supporting bottom frame, and a supporting plate is fixed to the top surface of the supporting cross plate, a connecting rod is rotatably sleeved on the top of the supporting plate, and the side of the connecting rod is fixed to the side wall of the fan casing, and a fixing clamp is threadedly sleeved on the connecting rod on the side of the support plate.

[0007] Furthermore, sealing plates are symmetrically arranged inside the air outlet, and control rotating rods are fixed at both ends of opposite sides of the two sealing plates, and the control rotating rods are rotatably connected to the inside of the air outlet, and the two control rotating rods at one end extend to the outside of the air outlet, and a limiting pressure plate is slidably arranged on the side of the air outlet at the bottom of the two control rotating rods, and a fixing plate is fixed on the outer wall of the air outlet at the bottom of the limiting pressure plate, and a fixing screw is threadedly sleeved on the inside of the fixing plate, and the fixing screw extends to the top of the fixing plate and is rotatably connected to the bottom of the limiting pressure plate.

[0008] Furthermore, each of the fixed screw tubes is provided with a threaded hole matched with the adjusting screw rod, and the threaded holes all penetrate the supporting bottom frame, and the thickness of the fixed screw tube is equal to the thickness of the supporting cross plate.

[0009] Furthermore, a knob is fixed on the top of each adjusting screw, and the diameter of the knob and the support foot on the top of each adjusting screw is larger than the outer ring diameter of the fixed screw.

[0010] Furthermore, the connecting rod is arranged in a transverse "I" shape, and the length of the threaded rod in the middle of the connecting rod is greater than the sum of the lengths of the support plate and the fixed clamp block.

[0011] Furthermore, both sides of the two sealing plates are configured to be semicircular, and the edges of the sealing plates are slidably fitted with the inner wall of the air outlet, and the control levers extending to the outside of the air outlet are configured to be "L" shaped.

[0012] Furthermore, an arc-shaped groove cooperating with the control rotating rod is symmetrically opened on the top surface of the limit pressure plate, and the limit pressure plate is configured as a rectangle whose side walls are slidably fitted with the side walls of the air outlet.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, four adjustable feet can be used to adjust the levelness of the fan according to the flatness of the bottom surface of the use environment, so that the fan can be placed stably, and the air outlet direction of the fan can be adjusted according to the needs of use, which solves the problem that the bottom surface of the centrifugal fan is not convenient to adapt to different environments during use and the air outlet direction is relatively single after being placed on the ground, thereby greatly improving the practicality of the centrifugal fan.

[0015] 2. In the utility model, the air outlet can be closed by a rotatable sealing plate when the fan is not in use, so that the inside of the fan casing can be protected. The sealing plate can be rotated to a desired angle to divert the air when it is out, and the range of the air flow after diversion can also be controlled, so as to facilitate adaptation to different environments and further improve the practicality of the centrifugal fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 is a front view schematic diagram of a centrifugal fan structure according to an embodiment of the present application;

[0018] Figure 2 yes Figure 1 A schematic back view of the centrifugal fan structure in the illustrated embodiment;

[0019] Figure 3 yes Figure 1 A schematic diagram of a centrifugal fan structure from the back, viewed from above, in the embodiment shown;

[0020] Figure 4 yes Figure 1 In the embodiment shown Figure 3 A schematic diagram of the enlarged structure in FIG.

[0021] The meanings of the reference numerals in the figure are as follows: 1. Fan casing; 2. Air outlet; 3. Support bottom frame; 4. Fixed screw; 5. Adjusting screw; 6. Support foot; 7. Support cross plate; 8. Support plate; 9. Connecting rod; 10. Fixed clamp block; 11. Sealing plate; 12. Control rotating rod; 13. Limiting pressure plate; 14. Fixed plate; 15. Fixed screw. DETAILED DESCRIPTION

[0022] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Reference Figure 1 , Figure 2 and Figure 4 A centrifugal fan for use in multiple environments includes a fan casing 1 and an air outlet 2. A support bottom frame 3 is provided below the fan casing 1, and fixed screw tubes 4 are fixed at the four corners of the top surface of the support bottom frame 3. A threaded hole matching with an adjusting screw 5 is opened inside each fixed screw tube 4, and the threaded holes all penetrate the support bottom frame 3. The thickness of the fixed screw tube 4 is equal to the thickness of the supporting cross plate 7. An adjusting screw 5 is threadedly sleeved inside each fixed screw tube 4, and a foot 6 is fixed to one end of the adjusting screw 5 extending below the fixed screw tube 4, and each adjusting screw 5 has a top. A knob is fixed, and the diameter of the knob and the support foot 6 at the top of each adjusting screw 5 is larger than the outer ring diameter of the fixed screw tube 4. A supporting cross plate 7 is fixed to the middle part of the inner side of the supporting bottom frame 3, and a supporting plate 8 is fixed to the top surface of the supporting cross plate 7. A connecting rod 9 is rotatably sleeved on the top of the supporting plate 8, and the side of the connecting rod 9 is fixed to the side wall of the fan casing 1. The connecting rod 9 is arranged in a horizontally placed "I" shape. The length of the threaded rod in the middle of the connecting rod 9 is larger than the sum of the lengths of the supporting plate 8 and the fixed clamping block 10. A fixed clamping block 10 is threadedly sleeved on the connecting rod 9 on the side of the support plate 8.

[0024] Specifically, when the fan casing 1 is placed horizontally on the ground, according to the flatness of the bottom surface of the use environment, the adjusting screws 5 are turned one by one to adjust the distance between the support legs 6 and the supporting bottom frame 3 so that the supporting bottom frame 3 remains stable and horizontal. When the direction angle of the air outlet 2 needs to be adjusted, the fixing clamp 10 is turned to release the clamping of the supporting plate 8 by the fixing clamp 10, and the connecting rod 9 can be rotated to adjust the angle of the fan casing 1, thereby adjusting the angle of the air outlet 2. After the adjustment is completed, the fixing clamp 10 is turned again to clamp the supporting plate 8.

[0025] As an optimization solution, Figure 3 and Figure 4 As shown, a sealing plate 11 is symmetrically arranged inside the air outlet 2, and both sides of the two sealing plates 11 are set to be semicircular, and the edges of the sealing plates 11 are slidingly fitted with the inner wall of the air outlet 2, and the control rotating rods 12 extending to the outside of the air outlet 2 are all set to be "L"-shaped, and control rotating rods 12 are fixed at both ends of the opposite sides of the two sealing plates 11, and the control rotating rods 12 are rotatably connected with the inside of the air outlet 2, and the two control rotating rods 12 at one end extend to the outside of the air outlet 2, and a limiting pressure plate 13 is slidably arranged on the side of the air outlet 2 at the bottom of the two control rotating rods 12, and the top surface of the limiting pressure plate 13 is symmetrically provided with an arc groove that cooperates with the control rotating rod 12, the limiting pressure plate 13 is set to a rectangle with side walls that slide and fit with the side walls of the air outlet 2, and a fixing plate 14 is fixed on the outer wall of the air outlet 2 at the bottom of the limiting pressure plate 13, and a fixing screw 15 is threadedly sleeved on the internal thread of the fixing plate 14, and the fixing screw 15 extends to the top of the fixing plate 14 and is rotatably connected to the bottom of the limiting pressure plate 13.

[0026] Specifically, when the air outlet needs to be diverted, the fixing screw 15 is turned so that the fixing screw 15 drives the limiting pressure plate 13 to move downward, so that the squeezing and fixing of the limiting pressure plate 13 on the control rotating rod 12 can be released, and the control rotating rod 12 can be rotated to drive the sealing plate 11 to rotate. After the two sealing plates 11 are rotated to the required angle, the fixing screw 15 is turned again to drive the limiting pressure plate 13 to press the control rotating rod 12 and fix it. At this time, the airflow is discharged along the gap between the sealing plate 11 and the inside of the air outlet 2, and the diversion can be achieved.

[0027] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0028] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A centrifugal fan for use in multiple environments, characterized in that: The invention comprises a fan casing (1) and an air outlet (2), wherein a supporting bottom frame (3) is arranged below the fan casing (1), and fixed screw tubes (4) are fixed at four corners of the top surface of the supporting bottom frame (3), an adjusting screw (5) is threadedly sleeved inside each of the fixed screw tubes (4), and a support foot (6) is fixed to one end of the adjusting screw (5) extending below the fixed screw tube (4), a supporting cross plate (7) is fixed to the middle of the inner side of the supporting bottom frame (3), and a supporting plate (8) is fixed to the top surface of the supporting cross plate (7), a connecting rod (9) is rotatably sleeved on the top of the supporting plate (8), and the side of the connecting rod (9) is fixed to the side wall of the fan casing (1), and a fixing clamp (10) is threadedly sleeved on the connecting rod (9) on the side of the supporting plate (8).

2. The centrifugal fan for multiple environments according to claim 1, characterized in that: The air outlet (2) is symmetrically provided with a sealing plate (11), and control rotating rods (12) are fixed at both ends of the opposite sides of the two sealing plates (11), and the control rotating rods (12) are rotatably connected to the inside of the air outlet (2), and the two control rotating rods (12) at one end extend to the outside of the air outlet (2), and a limiting pressure plate (13) is slidably provided on the side of the air outlet (2) at the bottom of the two control rotating rods (12), and a fixing plate (14) is fixed on the outer wall of the air outlet (2) at the bottom of the limiting pressure plate (13), and a fixing screw (15) is threadedly sleeved on the inside of the fixing plate (14), and the fixing screw (15) extends to the top of the fixing plate (14) and is rotatably connected to the bottom of the limiting pressure plate (13).

3. The centrifugal fan for multiple environments according to claim 1, characterized in that: Each of the fixed screw tubes (4) is provided with a threaded hole that cooperates with the adjusting screw rod (5), and the threaded holes all penetrate the supporting bottom frame (3). The thickness of the fixed screw tube (4) is equal to the thickness of the supporting horizontal plate (7).

4. The centrifugal fan for multiple environments according to claim 1, characterized in that: A knob is fixed on the top of each adjusting screw (5), and the diameter of the knob and the support foot (6) on the top of each adjusting screw (5) is greater than the outer ring diameter of the fixed screw tube (4).

5. The centrifugal fan for use in multiple environments according to claim 1, characterized in that: The connecting rod (9) is arranged in a transverse "I" shape, and the length of the threaded rod in the middle of the connecting rod (9) is greater than the sum of the lengths of the support plate (8) and the fixed clamp block (10).

6. The centrifugal fan for use in multiple environments according to claim 2, characterized in that: Both sides of the two sealing plates (11) are configured in a semicircular shape, and the edges of the sealing plates (11) are slidably fitted with the inner wall of the air outlet (2), and the control rotating rods (12) extending to the outside of the air outlet (2) are configured in an "L" shape.

7. The centrifugal fan for use in multiple environments according to claim 2, characterized in that: The top surface of the limit pressure plate (13) is symmetrically provided with an arc-shaped groove that cooperates with the control rotating rod (12); the limit pressure plate (13) is arranged in a rectangular shape with a side wall that slides in contact with the side wall of the air outlet (2).

Images