Silent centrifugal fan for granary

Abstract

The silent centrifugal fan for the granary comprises a bottom shell, a centrifugal fan body is installed on the upper surface of the bottom shell, protective covers are installed on the left side face and the right side face of the centrifugal fan body, a moving assembly is installed in the bottom shell, and the moving assembly comprises a motor installed on the inner top wall of the bottom shell. Through cooperation of an arranged electric push rod and a supporting plate, the electric push rod can push the supporting plate to descend, a bottom shell can be gradually jacked up, and moving wheels can make contact with the ground rapidly and stably. Through cooperation of an arranged motor, a threaded rod, a moving plate, a mounting plate, the moving wheels, inserting holes, through holes and U-shaped inserting rods, by means of work of the motor, the electric push rod can push the supporting plate to descend; the movable plate can drive the mounting plate and the movable wheels to descend, meanwhile, through holes and inserting holes can be connected through U-shaped inserting rods, the mounting plate is reinforced, the movable wheels can descend to the position below the bottom face of the bottom shell, and when the supporting plate is retracted, workers can conveniently move the centrifugal fan body.

Description

Technical Field

[0001] The utility model relates to the technical field of grain silo ventilation, in particular to a silent centrifugal fan for a grain silo. Background Art

[0002] A large amount of grain is usually stored inside a granary, and the granary is usually ventilated. Ventilation not only helps to keep the grain dry and prevent mildew and pests, but also stabilizes the temperature of the grain through air circulation, thereby ensuring the stability of the grain quality. When ventilating the inside of the granary, fans are often used to ventilate, thereby ensuring the ventilation effect.

[0003] Application No. 202322085803.9 discloses a centrifugal fan for a grain warehouse, including a frame and a support assembly; a frame: a motor and a volute are respectively provided at the upper end thereof, the left side of the motor is fixedly connected to the right side of the volute, the output shaft of the motor is rotatably connected to the through hole on the right side of the volute through a bearing, an impeller is provided at the end of the output shaft of the motor, the impeller is located inside the volute, and the input end of the motor is electrically connected to the output end of an external control switch; a support assembly: arranged inside the frame, universal wheels are evenly arranged at the four corners of the bottom surface of the frame, the support assembly includes a screw rod and a bracket, the bracket is slidably connected to the inside of the frame, a screw rod is rotatably connected at the inner center of the frame, and a screw hole threadedly connected to the screw rod is provided in the middle of the bracket. The centrifugal fan for a grain warehouse is convenient for moving and limiting the frame, and the support of the frame is more stable, which is convenient for subsequent ventilation of the granary.

[0004] The above scheme has shortcomings when used. When the fan needs to be moved, the staff needs to use tools to rotate the screw to make the moving wheel contact the ground to move the fan. The motor, impeller, volute and other components are usually made of heavier materials such as metal, which causes the entire fan equipment to have a considerable weight. When moving the fan, it is necessary to overcome the resistance caused by these weights, making the rotation of the screw particularly difficult, resulting in the inability to move the fan equipment conveniently. For this reason, we provide a silent centrifugal fan for granaries. Utility Model Content

[0005] The utility model provides a silent centrifugal fan for a granary, so as to solve the technical problem in the above-mentioned background technology that it is inconvenient to move the fan equipment conveniently.

[0006] The purpose and efficacy of a silent centrifugal fan for a granary in the utility model are achieved by the following specific technical means: a silent centrifugal fan for a granary, comprising a bottom shell, a centrifugal fan body is installed on the upper surface of the bottom shell, protective covers are installed on the left and right side surfaces of the centrifugal fan body, a moving component is installed inside the bottom shell, the moving component comprises a motor installed on the inner top wall of the bottom shell, a threaded rod is fixedly connected to the output end of the motor, a moving plate is threadedly connected to the outer surface of the threaded rod, the left and right side surfaces of the moving plate are fixedly connected to mounting plates, a group of moving wheels are installed on the bottom surface of each mounting plate, and a lifting component is installed inside the bottom shell.

[0007] Each of the moving wheels is located above the bottom surface of the bottom shell.

[0008] A plug hole is provided on the side faces of the two mounting plates which are away from each other, and a group of through holes is provided on the left and right side faces of the bottom shell. The inner wall of each group of through holes is slidably connected with a U-shaped plug rod.

[0009] The bottom end of the threaded rod is fixedly connected with a support plate, and the left and right side surfaces of the support plate are both connected to the inner wall of the bottom shell.

[0010] The moving assembly also includes two stabilizing grooves opened on the inner wall of the bottom shell, and the inner wall of each stabilizing groove is slidably connected with a stabilizing block, and the side surfaces of the two stabilizing blocks close to each other are respectively connected to the side surfaces of the two mounting plates away from each other.

[0011] The lifting assembly comprises two groups of electric push rods installed on the inner top wall of the bottom shell, and the bottom end of each group of electric push rods is commonly fixedly connected with a support plate.

[0012] Beneficial effects:

[0013] 1. Through the cooperation of the mobile component and the lifting component, the bottom shell can be lifted up by the lifting component, and the bottom shell will be separated from the ground. At the same time, the mobile component can be controlled to descend and contact the ground, and then the lifting component can be controlled to reset. The mobile component will form a support for the bottom shell and the centrifugal fan body, and the staff can move the centrifugal fan body conveniently.

[0014] 2. Through the cooperation of the set electric push rod and the support plate, the electric push rod can push the support plate down, gradually lift the bottom shell, and allow the moving wheel to quickly and stably contact the ground. Through the cooperation of the set motor, threaded rod, moving plate, mounting plate, moving wheel, jack, through hole and U-shaped plug rod, the moving plate will drive the mounting plate and the moving wheel to descend by the work of the motor. At the same time, the through hole and the jack can be connected by the U-shaped plug rod, thereby reinforcing the mounting plate. At this time, the moving wheel will drop to below the bottom surface of the bottom shell. When the support plate is retracted, the staff can easily move the centrifugal fan body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of a front cross-sectional view of the bottom shell of the utility model.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of a front cross-sectional view of the mobile component of the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of a side sectional view of the jacking assembly of the utility model.

[0019] Figure 1-4 In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0020] 1. Bottom shell; 2. Centrifugal fan body; 3. Protective cover; 4. Moving assembly; 401. Motor; 402. Threaded rod; 403. Moving plate; 404. Mounting plate; 405. Moving wheel; 406. Socket; 407. Through hole; 408. U-shaped plug rod; 409. Support plate; 410. Stabilizing groove; 411. Stabilizing block; 5. Lifting assembly; 501. Electric push rod; 502. Support plate. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] As attached Figure 1 To Attachment Figure 4 As shown: a silent centrifugal fan for a granary, including a bottom shell 1, a centrifugal fan body 2 is installed on the upper surface of the bottom shell 1, and protective covers 3 are installed on the left and right sides of the centrifugal fan body 2. The centrifugal fan body 2 is connected to the power supply through a wire, so that the normal operation of the centrifugal fan body 2 can be achieved, and the protective cover 3 can be used to prevent the centrifugal fan body 2 from sucking in debris when working, so as to avoid damage to the centrifugal fan body 2.

[0023] A moving assembly 4 is installed inside the bottom shell 1, and the moving assembly 4 includes a motor 401 installed on the inner top wall of the bottom shell 1, and the output end of the motor 401 is fixedly connected to a threaded rod 402, and the outer surface of the threaded rod 402 is threadedly connected to a moving plate 403, and the left and right sides of the moving plate 403 are fixedly connected to mounting plates 404, and the bottom surface of each mounting plate 404 is installed with a group of moving wheels 405, and each moving wheel 405 is located above the bottom surface of the bottom shell 1, which can ensure the stable contact between the bottom shell 1 and the ground, and can ensure the stability of the centrifugal fan body 2. At the same time, a threaded hole adapted to the threaded rod 402 is opened on the upper surface of the moving plate 403, and the threaded rod 402 is threadedly connected to the threaded hole. When the motor 401 is working, the moving plate 403 will rise and fall on the threaded rod 402, and at the same time, the mounting plate 404 will drive the moving wheel 405 to descend, and the moving wheel 405 will move to the bottom of the bottom of the bottom shell 1, thereby being able to support the bottom shell 1 and the fan body 2.

[0024] A socket 406 is provided on the side faces of the two mounting plates 404 that are away from each other, and a group of through holes 407 is provided on the left and right sides of the bottom shell 1. The inner wall of each group of through holes 407 is slidably connected with a U-shaped plug rod 408. When the mounting plates 404 are lowered to a suitable position, the sockets 406 will be aligned with the through holes 407, and then the U-shaped plug rod 408 will be pushed, and the U-shaped plug rod 408 will enter the socket 406, thereby forming a connection between the mounting plates 404 and the bottom shell 1, which can disperse the bearing capacity of the mounting plates 404 to prevent the mounting plates 404 from applying all gravity to the movable plate 403, thereby avoiding sliding between the threaded rod 402 and the movable plate 403.

[0025] The bottom end of the threaded rod 402 is fixedly connected to a support plate 409, and the left and right side surfaces of the support plate 409 are connected to the inner wall of the bottom shell 1. The support plate 409 can be used to support and reinforce the threaded rod 402, ensuring the stability of the threaded rod 402 when rotating. At the same time, the support plate 409 can limit the mounting plate 404, allowing the through hole 407 and the socket 406 to be easily aligned, making it convenient for the staff to install the U-shaped plug rod 408.

[0026] The moving component 4 also includes two stabilizing grooves 410 opened on the inner wall of the bottom shell 1, and the inner wall of each stabilizing groove 410 is slidably connected with a stabilizing block 411. The side surfaces of the two stabilizing blocks 411 that are close to each other are respectively connected to the side surfaces of the two mounting plates 404 that are far away from each other. By utilizing the cooperation between the stabilizing grooves 410 and the stabilizing blocks 411, the mounting plates 404 can be stabilized, thereby preventing the moving plate 403 from rotating.

[0027] A lifting assembly 5 is installed inside the bottom shell 1, and the lifting assembly 5 includes two groups of electric push rods 501 installed on the inner top wall of the bottom shell 1. The bottom end of each group of electric push rods 501 is fixedly connected with a support plate 502. The electric push rods 501 can be used to push the support plate 502 to contact the ground and gradually lift up the bottom shell 1, so that the moving wheel 405 can be stably in contact with the ground, which can prevent the moving wheel 405 from being subjected to strong pressure when the bottom shell 1 is lifted up.

[0028] Working principle: When the centrifugal fan body 2 needs to be moved, the electric push rod 501 is first started, and the electric push rod 501 will push the support plate 502 down, and the support plate 502 will contact the ground. As the electric push rod 501 extends, the bottom shell 1 will be gradually lifted off the ground, and then the motor 401 is started, and the motor 401 will drive the threaded rod 402 to rotate, and the movable plate 403 will descend on the threaded rod 402. At the same time, the movable plate 403 will drive the mounting plate 404 to descend until the mounting plate 404 contacts the support plate 409. At this time, the socket 406 and the through hole 407 will be aligned, and then the U-shaped plug 408 will be pushed into the socket 406. Then the electric push rod 501 is started to retract, and the movable wheel 405 will gradually contact the ground, and the staff can easily move the centrifugal fan body 2.

Claims

1. A silent centrifugal fan for a granary, comprising a bottom shell (1), a centrifugal fan body (2) being mounted on the upper surface of the bottom shell (1), and protective covers (3) being mounted on both left and right side surfaces of the centrifugal fan body (2), characterized in that: A moving assembly (4) is installed inside the bottom shell (1), and the moving assembly (4) comprises a motor (401) installed on the inner top wall of the bottom shell (1), the output end of the motor (401) is fixedly connected to a threaded rod (402), the outer surface of the threaded rod (402) is threadedly connected to a moving plate (403), the left and right side surfaces of the moving plate (403) are fixedly connected to mounting plates (404), and the bottom surface of each mounting plate (404) is installed with a group of moving wheels (405), and a lifting assembly (5) is installed inside the bottom shell (1).

2. The silent centrifugal fan for granary according to claim 1, characterized in that: Each of the moving wheels (405) is located above the bottom surface of the bottom shell (1).

3. The silent centrifugal fan for granary according to claim 1, characterized in that: A plug hole (406) is provided on the side faces of the two mounting plates (404) that are away from each other, and a group of through holes (407) is provided on the left and right side faces of the bottom shell (1). The inner wall of each group of through holes (407) is slidably connected to a U-shaped plug rod (408).

4. The silent centrifugal fan for granary according to claim 1, characterized in that: The bottom end of the threaded rod (402) is fixedly connected to a support plate (409), and the left and right side surfaces of the support plate (409) are both connected to the inner wall of the bottom shell (1).

5. The silent centrifugal fan for granary according to claim 1, characterized in that: The moving assembly (4) further comprises two stabilizing grooves (410) formed on the inner wall of the bottom shell (1), the inner wall of each stabilizing groove (410) being slidably connected to a stabilizing block (411), and the side surfaces of the two stabilizing blocks (411) being close to each other are respectively connected to the side surfaces of the two mounting plates (404) being away from each other.

6. The silent centrifugal fan for granary according to claim 1, characterized in that: The lifting assembly (5) comprises two groups of electric push rods (501) mounted on the inner top wall of the bottom shell (1), and the bottom end of each group of electric push rods (501) is fixedly connected to a support plate (502).

Images