Anti-explosion centrifugal fan

Abstract

The utility model relates to the technical field of anti-explosion centrifugal fans, in particular to an anti-explosion centrifugal fan which comprises a gravity seat, the top of the gravity seat is fixedly connected with a stabilizing plate, the outer side of the stabilizing plate is fixedly connected with a controller, the outer side of the stabilizing plate is connected with a moving block in a sliding mode, a connecting rod is installed in the moving block, and the connecting rod is fixedly connected with the controller. A starting machine is fixedly connected to the outer side of the connecting rod, a fan cover is installed on the outer side of the starting machine, a lifting groove is formed in the stabilizing plate, a motor is fixedly installed at the top of the stabilizing plate, a lead screw is fixedly connected to the output end of the motor, and a rotating ring is in threaded connection to the outer side of the lead screw; the anti-explosion centrifugal fan has the advantages that the anti-explosion centrifugal fan is simple in structure and convenient to use, the height of the anti-explosion centrifugal fan can be quickly adjusted, and the blowing direction of the anti-explosion centrifugal fan can be changed at the same time.

Description

Technical Field

[0001] The utility model relates to an explosion-proof centrifugal fan and belongs to the technical field of explosion-proof centrifugal fans. Background Art

[0002] The explosion-proof centrifugal fan is mainly composed of: impeller, casing, coupling, and shaft. The impeller is the main working component that generates wind pressure and transmits energy. The casing is mainly used to introduce and exhaust gas, and at the same time convert part of the kinetic energy of the gas into pressure energy. The coupling is used to connect the motor and the fan to transmit torque.

[0003] There are still some problems in the use of the existing explosion-proof centrifugal fan. For example, during the use of the equipment, air can only be blown at one position, and the height of the explosion-proof centrifugal fan cannot be adjusted. If the position of the explosion-proof centrifugal fan needs to be raised, the staff needs to place a heightening device at the bottom of the equipment, which not only has poor stability but is also inconvenient to install. In addition, the direction of the air outlet of the explosion-proof centrifugal fan is fixed, which limits the range of air blowing and makes its working efficiency relatively low. Utility Model Content

[0004] The purpose of the utility model is to provide an explosion-proof centrifugal fan. The utility model has a simple structure and is easy to use. It can quickly adjust the height of the explosion-proof centrifugal fan and change the blowing direction of the explosion-proof centrifugal fan to solve the problems raised in the above-mentioned background technology.

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

[0006] A kind of explosion-proof centrifugal fan comprises a gravity seat, the top of the gravity seat is fixedly connected with a stabilizing plate, the outer side of the stabilizing plate is fixedly connected with a controller, the outer side of the stabilizing plate is slidably connected with a moving block, a connecting rod is installed inside the moving block, the outer side of the connecting rod is fixedly connected with a starter, a fan cover is installed on the outer side of the starter, a lifting slot is opened inside the stabilizing plate, a motor is fixedly installed on the top of the stabilizing plate, the output end of the motor is fixedly connected with a screw rod, the outer side of the screw rod is threadedly connected with a rotating ring, the outer side of the rotating ring is fixedly connected with a sliding rod, the outer side of the gravity seat is fixedly connected with a connecting plate, the top of the connecting plate is fixedly connected with a movable tube, and the inner side of the movable tube is slidably connected with a limiting rod.

[0007] Furthermore, a positioning hole is opened inside the connecting rod, a threaded tube is fixedly connected to the top of the moving block, a screw is threadedly connected inside the threaded tube, and a rotating cover is fixedly connected to the top of the screw.

[0008] Furthermore, the controller is electrically connected to the starter and the motor, and the screw rod is rotatably connected to the inside of the stabilizing plate.

[0009] Furthermore, the slide bar is slidably connected to the inside of the lifting slot, and one end of the slide bar away from the rotating circle is fixedly connected to the outside of the moving block.

[0010] Furthermore, the movable tube is located outside the stabilizing plate, and the top of the limiting rod is fixedly connected to the bottom of the moving block.

[0011] Furthermore, the positioning holes are symmetrically distributed inside the connecting rod, and the screw is rotatably connected to the inside of the threaded tube through a rotating cover.

[0012] Furthermore, the outer diameter of the screw is smaller than the inner diameter of the positioning hole, and the bottom of the screw is clamped inside the positioning hole.

[0013] The beneficial effects of the utility model are:

[0014] (a) The utility model provides a gravity seat, and a moving block is fixedly installed on the outer side of the gravity seat. The moving block is used in conjunction with a connecting rod, so that the starter and the fan cover are installed on the outer side of the stabilizing plate. When the height of the starter and the fan cover needs to be adjusted, the motor on the top of the stabilizing plate is started by the controller, so that the motor drives the screw rod to rotate inside the stabilizing plate, and the rotation of the screw rod drives the rotating circle to rotate. Since a sliding rod is fixedly connected to the outer side of the rotating circle, and the sliding rod is slidably connected to the inside of the lifting groove, when the screw rod rotates, it can drive the rotating circle to move on the outer side of the screw rod. At this time, the moving block of the sliding rod is used in conjunction with the connecting rod, so that the starter and the fan cover are driven to move on the outer side of the stabilizing plate, thereby achieving the effect of being able to quickly adjust the height of the explosion-proof centrifugal fan.

[0015] (ii) The utility model provides a stabilizing plate, on which a moving block is installed, and the starter and the fan cover are installed on the outside of the moving block through a connecting rod. When the air outlet position of the fan cover needs to be adjusted, the rotating cover is first rotated to drive the screw to rotate inside the threaded tube, so that the screw moves upward inside the threaded tube. At this time, the screw moves out from the positioning hole inside the connecting rod, and the connecting rod is rotated to drive the starter and the fan cover to rotate. When the rotation is completed, the rotating cover is reversed to drive the screw to enter the positioning hole inside the connecting rod again, thereby achieving the effect of being able to adjust the air outlet position of the fan cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 This is a structural schematic diagram of an explosion-proof centrifugal fan of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of an explosion-proof centrifugal fan screw and the outer side of a moving block of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure between a moving block and a connecting rod of an explosion-proof centrifugal fan of the utility model;

[0020] Figure 4 This utility model is an explosion-proof centrifugal fan Figure 2 A magnified view of the structure at center A;

[0021] Numbers in the figure: 1. Gravity seat; 2. Stabilizing plate; 3. Controller; 4. Moving block; 5. Connecting rod; 6. Starter; 7. Fan cover; 8. Lifting slot; 9. Motor; 10. Screw; 11. Rotating circle; 12. Sliding rod; 13. Connecting plate; 14. Movable tube; 15. Limit rod; 16. Positioning hole; 17. Threaded tube; 18. Screw; 19. Rotating cover. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A kind of explosion-proof centrifugal fan comprises a gravity seat 1, the top of the gravity seat 1 is fixedly connected with a stabilizing plate 2, the outer side of the stabilizing plate 2 is fixedly connected with a controller 3, the outer side of the stabilizing plate 2 is slidably connected with a moving block 4, a connecting rod 5 is installed inside the moving block 4, the outer side of the connecting rod 5 is fixedly connected with a starter 6, the outer side of the starter 6 is installed with a fan cover 7, a lifting groove 8 is opened inside the stabilizing plate 2, a motor 9 is fixedly installed on the top of the stabilizing plate 2, the output end of the motor 9 is fixedly connected with a screw rod 10, the outer side of the screw rod 10 is threadedly connected with a rotating ring 11, the outer side of the rotating ring 11 is fixedly connected with a sliding rod 12, the outer side of the gravity seat 1 is fixedly connected with a connecting plate 13, the top of the connecting plate 13 is fixedly connected with a movable tube 14, and the inner side of the movable tube 14 is slidably connected with a limiting rod 15.

[0025] Specifically, Figure 1 As shown, the controller 3 is electrically connected to the starter 6 and the motor 9, the screw rod 10 is rotatably connected to the inside of the stabilizing plate 2, the slide rod 12 is slidably connected to the inside of the lifting groove 8, and the end of the slide rod 12 away from the rotating circle 11 is fixedly connected to the outside of the moving block 4, the movable tube 14 is located on the outside of the stabilizing plate 2, and the top of the limit rod 15 is fixedly connected to the bottom of the moving block 4.

[0026] When the height of the starter 6 and the fan cover 7 needs to be adjusted, the motor 9 on the top of the stable plate 2 is started by the controller 3, so that the motor 9 drives the screw rod 10 to rotate inside the stable plate 2, and the rotating circle 11 is rotated by the rotation of the screw rod 10. Since a sliding rod 12 is fixedly connected to the outside of the rotating circle 11, and the sliding rod 12 is slidably connected to the inside of the lifting groove 8, when the screw rod 10 rotates, the rotating circle 11 can be driven to move outside the screw rod 10. At this time, the moving block 4 of the sliding rod 12 is used in cooperation, so that the connecting rod 5 drives the starter 6 and the fan cover 7 to move outside the stable plate 2, thereby achieving the effect of being able to quickly adjust the height of the explosion-proof centrifugal fan.

[0027] Example 2 Please refer to Figure 1 , Figure 2 and Figure 4 The difference between this embodiment and embodiment 1 is that a positioning hole 16 is opened inside the connecting rod 5, a threaded tube 17 is fixedly connected to the top of the moving block 4, a screw 18 is threadedly connected inside the threaded tube 17, and a rotating cover 19 is fixedly connected to the top of the screw 18.

[0028] Specifically, Figure 1-4As shown, the positioning holes 16 are symmetrically distributed inside the connecting rod 5, and the screw 18 is rotatably connected to the inside of the threaded tube 17 through a rotating cover 19. The outer diameter of the screw 18 is smaller than the inner diameter of the positioning hole 16, and the bottom of the screw 18 is clamped inside the positioning hole 16.

[0029] In the present embodiment: a stabilizing plate 2 is provided, a moving block 4 is installed on the stabilizing plate 2, and the starter 6 and the fan cover 7 are installed on the outside of the moving block 4 through the connecting rod 5. When the air outlet position of the fan cover 7 needs to be adjusted, first, the rotating cover 19 is rotated to make the rotating cover 19 drive the screw 18 to rotate inside the threaded tube 17, so that the screw 18 moves upward inside the threaded tube 17. At this time, the screw 18 will move out from the positioning hole 16 inside the connecting rod 5, and the connecting rod 5 is rotated to make the connecting rod 5 drive the starter 6 and the fan cover 7 to rotate. When the rotation is completed, the rotating cover 19 is reversed to make the rotating cover 19 drive the screw 18 to enter the positioning hole 16 inside the connecting rod 5 again, thereby achieving the effect of being able to adjust the air outlet position of the fan cover 7.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof centrifugal fan, comprising a gravity seat (1), characterized in that: The top of the gravity seat (1) is fixedly connected to a stabilizing plate (2), the outer side of the stabilizing plate (2) is fixedly connected to a controller (3), the outer side of the stabilizing plate (2) is slidably connected to a moving block (4), a connecting rod (5) is installed inside the moving block (4), the outer side of the connecting rod (5) is fixedly connected to a starter (6), the outer side of the starter (6) is installed with a fan cover (7), a lifting groove (8) is provided inside the stabilizing plate (2), a motor (9) is fixedly installed on the top of the stabilizing plate (2), the output end of the motor (9) is fixedly connected to a screw rod (10), the outer side of the screw rod (10) is threadedly connected to a rotating ring (11), the outer side of the rotating ring (11) is fixedly connected to a sliding rod (12), the outer side of the gravity seat (1) is fixedly connected to a connecting plate (13), the top of the connecting plate (13) is fixedly connected to a movable tube (14), and the movable tube (14) is slidably engaged with a limiting rod (15) inside.

2. The explosion-proof centrifugal fan according to claim 1, characterized in that: A positioning hole (16) is provided inside the connecting rod (5), a threaded tube (17) is fixedly connected to the top of the moving block (4), a screw rod (18) is threadedly connected inside the threaded tube (17), and a rotating cover (19) is fixedly connected to the top of the screw rod (18).

3. The explosion-proof centrifugal fan according to claim 1, characterized in that: The controller (3) is electrically connected to the starter (6) and the motor (9), and the screw rod (10) is rotatably connected to the inside of the stabilizing plate (2).

4. The explosion-proof centrifugal fan according to claim 1, characterized in that: The slide bar (12) is slidably connected inside the lifting groove (8), and one end of the slide bar (12) away from the rotating circle (11) is fixedly connected to the outside of the moving block (4).

5. The explosion-proof centrifugal fan according to claim 1, characterized in that: The movable tube (14) is located outside the stabilizing plate (2), and the top of the limiting rod (15) is fixedly connected to the bottom of the moving block (4).

6. The explosion-proof centrifugal fan according to claim 2, characterized in that: The positioning holes (16) are symmetrically distributed inside the connecting rod (5), and the screw rod (18) is rotatably connected to the inside of the threaded tube (17) through a rotating cover (19).

7. The explosion-proof centrifugal fan according to claim 2, characterized in that: The outer diameter of the screw rod (18) is smaller than the inner diameter of the positioning hole (16), and the bottom of the screw rod (18) is clamped inside the positioning hole (16).

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