Centrifugal fan with dust blocking structure

Abstract

The utility model discloses a centrifugal fan with a dust blocking structure, which relates to the technical field of centrifugal fans and comprises a bottom plate, the top end of the bottom plate is fixedly connected with a centrifugal fan body, and the air outlet end of the centrifugal fan body is fixedly connected with an air outlet pipe. By the adoption of the structure, the lifting frame is movably installed in the air outlet pipe, the lower portion of the lifting frame is connected with the installation frame, the filter screen and the aromatherapy filter element are connected to the installation frame, the filter screen can prevent large impurities from entering the centrifugal fan body, and the aromatherapy filter element can prevent small impurities from entering the centrifugal fan body. Due to the fact that the aromatherapy function is integrated, pleasant fragrance is pervaded in the working environment, a more comfortable and pleasant working atmosphere is created, impurities can be prevented from entering the air outlet pipe, the situation that an internal impeller is stuck, and a centrifugal fan is damaged can be prevented, the stability and reliability of equipment are improved, and the continuity and high efficiency of production operation are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal fans, and in particular relates to a centrifugal fan with a dust shielding structure. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge the gas. It is a driven fluid machine. Its working principle is based on the principle of converting kinetic energy into potential energy. It uses a high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction to convert kinetic energy into potential energy.

[0003] For example, a Chinese patent with the announcement number CN214304427U discloses an energy-saving centrifugal fan, which relates to the field of centrifugal fans and aims to solve the problem that the centrifugal fan base is integrally formed or installed on the base by bolts, which makes it inconvenient to adjust the position and direction of the centrifugal fan's air blowing. The centrifugal fan includes a base, a motor and a centrifugal fan. The centrifugal fan and the motor are both arranged on the top of the base. The centrifugal fan and the base are movably connected. The rotation of the centrifugal fan body is used to change the direction of the air outlet. The motor is used to drive the input shaft of the centrifugal fan to rotate. A bracket is fixedly connected to the top of the base, and a rotating mechanism is provided on one side of the bracket. The centrifugal fan and the rotating mechanism are detachably fixed, and the centrifugal fan is vertically arranged. The rotating mechanism is used to drive the centrifugal fan to rotate.

[0004] Although the above-mentioned centrifugal fan solves the problem of the changeable blowing position of the centrifugal fan, there are still some shortcomings that need to be improved. The air outlet lacks a corresponding protective structure. During use, foreign matter may enter from the air outlet and cause the impeller to get stuck. In severe cases, it may even directly cause the entire fan to be damaged, affecting the normal operation. Although there are filters installed at the air outlet on the market to block impurities, users often face challenges such as cumbersome operations and long time-consuming when cleaning or replacing the filters, which undoubtedly increases the difficulty and inconvenience of daily maintenance. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a centrifugal fan with a dust shielding structure to solve the problems raised in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A centrifugal fan with a dust-blocking structure comprises a base plate, the top end of the base plate is fixedly connected to a centrifugal fan body, the air outlet end of the centrifugal fan body is fixedly connected to an air outlet pipe, the interior of the air outlet pipe is movably connected to a mounting bracket, one side of the mounting bracket is connected to a filter screen, the other side of the mounting bracket is connected to an aromatherapy filter element, the interior of the air outlet pipe is movably connected to a lifting bracket, both sides of the interior of the lifting bracket are provided with a clamping assembly, one side of the mounting bracket is movably connected to the clamping assembly, one side of the air outlet pipe is provided with a material taking assembly, one side of the material taking assembly is provided with a driving assembly, and the driving assembly is transmission-connected to the lifting bracket via the material taking assembly.

[0008] As a preferred technical solution, the mounting frame includes a first mounting frame, which is arranged inside the lifting frame, and both sides of the bottom end of the first mounting frame are fixedly connected with connecting rods, and the bottom end of the connecting rod is fixedly connected to the second mounting frame, the filter screen is fixedly connected to the inside of the first mounting frame, and the aromatherapy filter element is fixedly connected to the inside of the second mounting frame, and card holes are opened on both sides of the first mounting frame.

[0009] As an optimal technical solution, the clamping assembly includes an installation groove, which is opened on both sides of the lifting frame. A spring is fixedly connected to the inside of the installation groove, and a clamping block is fixedly connected to one end of the spring. The clamping block is movably connected to the clamping hole.

[0010] As a preferred technical solution, one end of the clamping block close to the spring is fixedly connected to a guide rod, and the guide rod is slidably connected to the inside of the mounting groove.

[0011] As an optimal technical solution, the material-taking assembly includes a fixed frame, which is fixedly connected to the air outlet pipe. A slide groove is provided inside the fixed frame, and a screw rod is rotatably connected inside the slide groove. The outer surface of the screw rod is threadedly connected to a lifting block, and the lifting block is slidably connected to the slide groove. One end of the lifting block is fixedly connected to one end of the lifting frame.

[0012] As an optimal technical solution, a limit frame is fixedly connected to the inner side of the lifting frame, and positioning rods are fixedly connected on both sides of the bottom end of the limit frame. Positioning holes are opened on both sides of the top end of the first installation frame, and the positioning rods are movably connected to the positioning holes.

[0013] As an optimal technical solution, the drive assembly includes a fixed plate, which is fixedly connected to the top of the fixed frame, and a worm is rotatably connected to the inner side of the fixed plate. One side of the worm is meshed with a worm wheel, and the worm wheel is fixedly connected to the screw, one end of the worm is fixedly connected to a round block, and the end of the round block away from the worm is fixedly connected to a rotating rod.

[0014] In summary, the present invention has the following beneficial effects:

[0015] First, in the present invention, a lifting frame is movably installed inside the air outlet duct, a mounting frame is connected below the lifting frame, and a filter screen and an aromatherapy filter element are connected to the mounting frame. The filter screen can prevent larger impurities from entering the interior of the centrifugal fan body, and the aromatherapy filter element can prevent smaller impurities from entering the interior of the centrifugal fan body. In addition, due to the integration of the aromatherapy function, the working environment is filled with pleasant fragrance, creating a more comfortable and pleasant working atmosphere. Therefore, impurities can be prevented from entering the air outlet duct, causing the internal impeller to become stuck and causing damage to the centrifugal fan, thereby improving the stability and reliability of the equipment and ensuring the continuity and efficiency of production operations.

[0016] Second, in the present invention, by installing a driving assembly and a material-taking assembly on the air outlet duct, the lifting frame can be driven to move, so that the lifting frame drives the mounting frame to extend out of the air outlet duct, and then the mounting frame is pulled downward. Under the action of the clamping assembly, the mounting frame can be removed for maintenance, reducing the complexity and time cost of maintenance, and making maintenance work more efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the lifting frame structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the mounting frame structure of the utility model;

[0020] Figure 4 This utility model Figure 1 A is an enlarged structural diagram of FIG.

[0021] Figure numerals: 1. bottom plate; 2. centrifugal fan body; 3. air outlet pipe; 4. filter screen; 5. aromatherapy filter element; 6. mounting frame; 61. first mounting frame; 62. connecting rod; 63. second mounting frame; 64. clamping hole; 7. positioning hole; 8. lifting frame; 9. clamping assembly; 91. mounting groove; 92. spring; 93. clamping block; 94. guide rod; 10. material taking assembly; 101. fixing frame; 102. screw rod; 103. lifting block; 104. slide groove; 105. driving assembly; 1051. worm gear; 1052. worm; 1053. fixing plate; 1054. round block; 1055. rotating rod; 11. limit frame; 12. positioning rod. DETAILED DESCRIPTION

[0022] Example

[0023] refer to Figures 1 to 4The centrifugal fan with a dust shield structure described in this embodiment includes a base plate 1, the top of the base plate 1 is fixedly connected to the centrifugal fan body 2, the air outlet end of the centrifugal fan body 2 is fixedly connected to the air outlet pipe 3, the air outlet pipe 3 is internally movably connected with a mounting bracket 6, one side of the mounting bracket 6 is connected to the filter screen 4, and the other side of the mounting bracket 6 is connected to the fragrance filter element 5. The air outlet pipe 3 is internally movably connected with a lifting bracket 8, and both sides of the lifting bracket 8 are provided with a clamping assembly 9 on one side of the mounting bracket 6 and the clamping assembly 9. One side of the air outlet pipe 3 is provided with a material taking assembly 10, and one side of the material taking assembly 10 is provided with a driving assembly 105, and the driving assembly 105 is transmission-connected to the lifting bracket 8 through the material taking assembly 10. Through the above improvements, impurities can be prevented from entering the air outlet pipe 3, causing the internal impeller to be stuck, causing damage to the centrifugal fan, thereby improving the stability and reliability of the equipment, reducing the complexity and time cost of maintenance, and making maintenance work more efficient and convenient.

[0024] refer to Figure 3 The mounting frame 6 includes a first mounting frame 61, which is arranged inside the lifting frame 8. Both sides of the bottom end of the first mounting frame 61 are fixedly connected with connecting rods 62, and the bottom end of the connecting rod 62 is fixedly connected with a second mounting frame 63. The filter screen 4 is fixedly connected to the inside of the first mounting frame 61, and the aromatherapy filter element 5 is fixedly connected to the inside of the second mounting frame 63. Both sides of the first mounting frame 61 are provided with card holes 64; by setting the first mounting frame 61 for installing the filter screen 4, setting the second mounting frame 63 for installing the aromatherapy filter element 5, and setting the connecting rod 62, the second mounting frame 63 is connected to the first mounting frame 61 and can be taken out at the same time.

[0025] refer to Figure 2 The clamping assembly 9 includes a mounting groove 91, and the mounting groove 91 is opened on both sides of the interior of the lifting frame 8. The interior of the mounting groove 91 is fixedly connected to a spring 92, and one end of the spring 92 is fixedly connected to a clamping block 93, and the clamping block 93 is movably connected to the clamping hole 64. The end of the clamping block 93 close to the spring 92 is fixedly connected to a guide rod 94, and the guide rod 94 is slidably connected to the interior of the mounting groove 91; by providing the clamping assembly 9, the first mounting frame 61 pushes the clamping block 93, and the clamping block 93 moves under the action of the spring 92 in the mounting groove 91, so that the clamping block 93 is connected to the clamping hole 64, so that the mounting frame 6 can be connected to the lifting frame 8. This structure facilitates the disassembly and assembly of the mounting frame 6, thereby facilitating the replacement of the filter screen 4 and the aromatherapy filter element 5. By providing the guide rod 94, the movement of the clamping block 93 is more stable, avoiding the position of the clamping block 93 from being offset, and facilitating the connection of the clamping block 93 with the clamping hole 64.

[0026] refer to Figure 4The material-taking component 10 includes a fixing frame 101, which is fixedly connected to the air outlet pipe 3. A slide groove 104 is provided inside the fixing frame 101. The slide groove 104 is rotatably connected to the inside of the screw rod 102. The outer surface of the screw rod 102 is threadedly connected to a lifting block 103. The lifting block 103 is slidably connected to the slide groove 104, and one end of the lifting block 103 is fixedly connected to one end of the lifting frame 8; by setting the material-taking component 10, after the screw rod 102 rotates, the lifting block 103 slides in the slide groove 104, so that the lifting block 103 drives the lifting frame 8 to move, so that the filter screen 4 and the aromatherapy filter element 5 on the mounting frame 6 can be extended out of the air outlet pipe 3.

[0027] refer to Figure 2-3 , the inner side of the lifting frame 8 is fixedly connected to the limit frame 11, and the bottom two sides of the limit frame 11 are fixedly connected with positioning rods 12, and the top two sides of the first installation frame 61 are provided with positioning holes 7, and the positioning rods 12 are movably connected to the positioning holes 7; by installing the limit frame 11 in the lifting frame 8, installing the positioning rods 12 under the limit frame 11, and opening the positioning hole 7 on the first installation frame 61, the positioning rods 12 are connected to the positioning hole 7, so that the mounting frame 6 is connected to the lifting frame 8.

[0028] refer to Figure 4 The driving assembly 105 includes a fixed plate 1053, which is fixedly connected to the top of the fixed frame 101. The inner side of the fixed plate 1053 is rotatably connected to a worm 1052, and one side of the worm 1052 is meshedly connected to a worm wheel 1051. The worm wheel 1051 is fixedly connected to the screw 102, and one end of the worm 1052 is fixedly connected to a round block 1054, and the end of the round block 1054 away from the worm 1052 is fixedly connected to a rotating rod 1055; by setting the driving assembly 105, holding the rotating rod 1055 to drive the round block 1054 to rotate, so that the round block 1054 drives the worm 1052 to rotate on the fixed plate 1053, and the worm 1052 drives the worm wheel 1051 to rotate, thereby providing power for the material taking assembly 10 to work.

[0029] Principle and advantages of use: By connecting the mounting frame 6 below the lifting frame 8, installing the filter 4 on the first mounting frame 61 of the mounting frame 6, and installing the aroma filter element 5 on the second mounting frame 63, the filter 4 can prevent larger impurities from entering the centrifugal fan body 2, and the aroma filter element 5 can prevent smaller impurities from entering the centrifugal fan body 2, preventing impurities from entering from the air outlet pipe 3 and causing the internal impeller to get stuck, causing damage to the centrifugal fan, and because of the aroma function, the working environment is filled with pleasant fragrance, creating a more comfortable and pleasant working atmosphere. When it is necessary to remove the filter 4 and the aroma filter element 5 from the air outlet pipe 3, hold the rotating The rod 1055 drives the round block 1054 to rotate, so that the round block 1054 drives the worm 1052 to rotate on the fixed plate 1053, so that the worm 1052 drives the worm wheel 1051 to rotate, and the worm wheel 1051 drives the screw rod 102 to rotate. After the screw rod 102 rotates, the lifting block 103 slides in the slide groove 104, so that the lifting block 103 drives the lifting frame 8 to move, so that the filter screen 4 and the aromatherapy filter element 5 on the mounting frame 6 can be extended out of the air outlet 3, and then the mounting frame 6 is pulled downward, and the clamping block 93 is separated from the clamping hole 64 under the action of the spring 92, and the mounting frame 6 can be removed, reducing the complexity and time cost of maintenance, and making maintenance work more efficient and convenient.

Claims

1. A centrifugal fan with a dust shield structure, comprising a bottom plate, characterized in that: The top of the base plate is fixedly connected to a centrifugal fan body, the air outlet end of the centrifugal fan body is fixedly connected to an air outlet pipe, the interior of the air outlet pipe is movably connected to a mounting bracket, one side of the mounting bracket is connected to a filter screen, the other side of the mounting bracket is connected to an aromatherapy filter element, the interior of the air outlet pipe is movably connected to a lifting bracket, both sides of the interior of the lifting bracket are provided with a clamping assembly, one side of the mounting bracket is movably connected to the clamping assembly, one side of the air outlet pipe is provided with a material taking assembly, one side of the material taking assembly is provided with a driving assembly, and the driving assembly is transmission-connected to the lifting bracket via the material taking assembly.

2. The centrifugal fan with a dust shield structure according to claim 1, characterized in that: The mounting frame includes a first mounting frame, which is arranged inside the lifting frame. Connecting rods are fixedly connected to both sides of the bottom end of the first mounting frame. The bottom end of the connecting rod is fixedly connected to the second mounting frame. The filter screen is fixedly connected to the inside of the first mounting frame, and the aromatherapy filter element is fixedly connected to the inside of the second mounting frame. Card holes are opened on both sides of the first mounting frame.

3. The centrifugal fan with a dust shield structure according to claim 2, characterized in that: The clamping assembly includes a mounting groove, which is opened on both sides of the lifting frame. A spring is fixedly connected to the inside of the mounting groove, and one end of the spring is fixedly connected to a clamping block, which is movably connected to the clamping hole.

4. The centrifugal fan with a dust shield structure according to claim 3, characterized in that: One end of the clamping block close to the spring is fixedly connected with a guide rod, and the guide rod is slidably connected to the inside of the mounting groove.

5. The centrifugal fan with a dust shield structure according to claim 1, characterized in that: The material-taking assembly includes a fixed frame, which is fixedly connected to the air outlet pipe. A slide groove is provided inside the fixed frame, a screw rod is rotatably connected inside the slide groove, and a lifting block is threadedly connected to the outer surface of the screw rod. The lifting block is slidably connected to the slide groove, and one end of the lifting block is fixedly connected to one end of the lifting frame.

6. The centrifugal fan with a dust shield structure according to claim 2, characterized in that: One side of the interior of the lifting frame is fixedly connected to a limit frame, both sides of the bottom end of the limit frame are fixedly connected to positioning rods, both sides of the top end of the first installation frame are provided with positioning holes, and the positioning rods are movably connected to the positioning holes.

7. The centrifugal fan with a dust shield structure according to claim 4, characterized in that: The driving assembly includes a fixed plate, which is fixedly connected to the top of the fixed frame. A worm is rotatably connected to the inner side of the fixed plate. A worm wheel is meshedly connected to one side of the worm. The worm wheel is fixedly connected to the lead screw. A round block is fixedly connected to one end of the worm. The end of the round block away from the worm is fixedly connected to the rotating rod.

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