External mesh enclosure of centrifugal fan

Abstract

The utility model belongs to the technical field of mesh enclosures, and discloses a centrifugal fan external mesh enclosure which comprises a centrifugal fan body, one side of the centrifugal fan body is fixedly connected with a supporting shell, an annular groove is formed in the supporting shell, the inner wall of the annular groove is fixedly connected with a spring, one end of the spring is fixedly connected with a trapezoid block, and the other end of the spring is fixedly connected with a connecting rod. By means of the technical scheme, the problems that in the prior art, bolts need to be used for fixing the mesh enclosure, the risk of screw slipping is caused when the bolts are used, and the difficulty of follow-up replacement and maintenance of the mesh enclosure is increased are solved; the mesh enclosure cannot be quickly and conveniently mounted and fixed, and the mounting efficiency is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of mesh covers, in particular to an external mesh cover for a centrifugal fan. Background Art

[0002] During the operation of the centrifugal fan, if foreign objects enter the inside of the centrifugal fan, the internal parts of the centrifugal fan will be damaged. The use of the fan mesh cover can effectively prevent fingers or any foreign objects from contacting the rotating high-speed blades. It is fixed in front of the fan frame and will not restrict the airflow. Therefore, the use of the mesh cover is necessary to reduce the incidence of accidents.

[0003] At the same time, the application number is 202122395007.6, which is a centrifugal fan outlet mesh cover with flow guidance and efficiency improvement functions, including a mounting seat, a radial grille plate is welded and fixed to the outer surface of the mounting seat, and a circumferential grille plate is welded and fixed at the connection of the radial grille plate, and a built-in mounting plate is provided at the end of the mounting seat, and two first grooves are provided on the side surfaces of both ends of the built-in mounting plate, and a pull rod is embedded in the interior of the first groove, and a stop block is integrally formed at the end of the pull rod, and a spring is installed in the outer surface of the pull rod in the interior of the first groove; by designing the circumferential grille plate and the radial grille plate, when the gas flows out through the mesh cover, the interaction between the circumferential grille plate and the radial grille plate can significantly reduce the fan noise and improve the uniformity and fluidity of the airflow. The mesh cover structure can quickly solve the problem of uneven airflow at the outlet of the centrifugal fan and improve the efficiency of the fan.

[0004] An existing centrifugal fan outlet mesh cover with diversion and efficiency-enhancing functions needs to be fixed with bolts during use. The use of bolts has the risk of thread stripping, and the mesh cover cannot be installed and fixed quickly and conveniently, resulting in low installation efficiency.

[0005] Therefore, in order to solve the above problems, an external mesh cover of a centrifugal fan is proposed. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides an external mesh cover for a centrifugal fan, which has the advantage of being able to quickly and conveniently install and fix the mesh cover.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an external mesh cover of a centrifugal fan, comprising a centrifugal fan body, one side of the centrifugal fan body is fixedly connected to a supporting shell, an annular groove is provided inside the supporting shell, a spring is fixedly connected to the inner wall of the annular groove, one end of the spring is fixedly connected to a trapezoidal block, one side of the trapezoidal block is fitted with a mesh cover body, and the outer side of the mesh cover body is fitted with a fixed ring block.

[0008] Preferably, the centrifugal fan body is rotatably connected to a rotating ring inside, a fixed block is fixedly connected to the outside of the rotating ring, a connecting plate is fixedly connected to one side of the fixed block, a brush rod is rotatably connected to the inside of the connecting plate, and a rotating shaft is inserted and connected to the inside of the brush rod.

[0009] Preferably, a limiting groove is provided on one side of the trapezoidal block, the outer side of the mesh cover body is fixedly connected to the limiting block, and the cross-sectional area of ​​the limiting groove is the same as the cross-sectional area of ​​the limiting block.

[0010] Preferably, the interior of the fixing ring block is fixedly connected with fixing columns, and the number of the fixing columns is four.

[0011] Preferably, a second insertion hole is provided in the middle of the brush rod, and the straight-line distance between the second insertion hole and the rotating shaft is the same as the straight-line distance between the rotating shaft and the fixing block.

[0012] Preferably, a bolt is inserted and connected inside the fixing block, a first insertion hole is opened at one end of the brush rod, and the cross-sectional area of ​​the first insertion hole is the same as the cross-sectional area of ​​the bolt.

[0013] Preferably, a connecting groove is provided on one side of the brush rod, a sliding block is slidably connected to the inside of the centrifugal fan body, and a connecting rod is fixedly connected to one side of the sliding block.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model provides a trapezoidal block. When the mesh cover body needs to be installed, the mesh cover body is first pressed into the interior of the supporting shell from one end, so that the mesh cover body squeezes the trapezoidal block, and the trapezoidal block squeezes the spring fixedly connected inside the ring groove upward. Then one side of the mesh cover body fits with the fixed ring block, so that the mesh cover body is embedded in the fixed ring block. Under the action of the spring, elastic force is applied to the trapezoidal block to return it to its original position, and the mesh cover body is limited, thereby realizing rapid installation of the mesh cover body without the need for bolts and other parts to be connected. It is convenient and fast, reduces the risk of damage, and improves the installation speed.

[0016] 2. The utility model provides a brush rod. When the mesh cover body is used for a period of time, some dust will accumulate on the mesh cover body, which will affect the heat dissipation of the centrifugal fan. At this time, the brush rod is rotated to rotate from the inside of the connecting plate to the outside of the mesh cover body. Then, the rotating ring is rotated to drive the fixed block to rotate, the fixed block drives the connecting plate, and the connecting plate drives the brush rod to rotate and clean the outside of the mesh cover body, thereby removing the dust accumulated on the outside of the mesh cover body, improving the heat dissipation efficiency of the centrifugal fan, and increasing the service life of the mesh cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cutaway structure of the support shell of the utility model;

[0019] Figure 3 For this utility model Figure 2 Schematic diagram of separation structure;

[0020] Figure 4 This is a schematic diagram of the brush rod structure of the utility model.

[0021] In the figure: 1. centrifugal fan body; 2. supporting shell; 3. ring groove; 4. spring; 5. trapezoidal block; 6. mesh cover body; 7. fixed ring block; 8. rotating ring; 9. fixed block; 10. connecting plate; 11. brush rod; 12. rotating shaft; 13. limiting groove; 14. limiting block; 15. fixing column; 16. sliding block; 17. connecting rod; 18. connecting groove; 19. bolt; 20. first insertion hole; 21. second insertion hole. 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] like Figures 1 to 4 As shown, the utility model provides an external mesh cover for a centrifugal fan, comprising a centrifugal fan body 1, an outer side of the centrifugal fan body 1 is provided with a motor to provide power for it, one side of the centrifugal fan body 1 is fixedly connected with a support shell 2, an inner side of the support shell 2 is provided with an annular groove 3, an inner wall of the annular groove 3 is fixedly connected with a spring 4, one end of the spring 4 is fixedly connected with a trapezoidal block 5, one side of the trapezoidal block 5 is fitted with a mesh cover body 6, and the outer side of the mesh cover body 6 is fitted with a fixed ring block 7.

[0024] Specifically, the centrifugal fan body 1 is rotatably connected to a rotating ring 8 inside, a fixed block 9 is fixedly connected to the outside of the rotating ring 8, a connecting plate 10 is fixedly connected to one side of the fixed block 9, a brush rod 11 is rotatably connected inside the connecting plate 10, a rotating shaft 12 is inserted into the inside of the brush rod 11, and the rotating shaft 12 is also inserted into the inside of the brush rod 11.

[0025] Furthermore, a limiting groove 13 is opened on one side of the trapezoidal block 5, and a limiting block 14 is fixedly connected to the outer side of the mesh cover body 6, and the cross-sectional area of ​​the limiting groove 13 is the same as the cross-sectional area of ​​the limiting block 14, which limits the position of the mesh cover body 6 and also facilitates the limiting block 14 to slide inside the limiting groove 13.

[0026] Furthermore, the interior of the fixed ring block 7 is fixedly connected with a fixed column 15, and the number of the fixed columns 15 is four, and the number of the fixed columns 15 is the same as the number of the limit blocks 14, so as to fix the mesh cover body 6 and prevent it from moving.

[0027] It is worth noting that a second insertion hole 21 is opened in the middle of the brush rod 11, and the straight-line distance between the second insertion hole 21 and the rotating shaft 12 is the same as the straight-line distance between the rotating shaft 12 and the fixed block 9. When the brush rod 11 is not in use, the brush rod 11 can be fixed to the inside of the fixed block 9 to increase the practicality of the device.

[0028] It is worth noting that a bolt 19 is inserted and connected inside the fixing block 9, a first insertion hole 20 is opened at one end of the brush rod 11, and the cross-sectional area of ​​the first insertion hole 20 is the same as the cross-sectional area of ​​the bolt 19. The bolt 19 is inserted into the first insertion hole 20 to fix the brush rod 11 and prevent the brush rod 11 from rotating.

[0029] It is worth mentioning that a connecting groove 18 is provided on one side of the brush rod 11, and a slider 16 is slidably connected to the inside of the centrifugal fan body 1, and a connecting rod 17 is fixedly connected to one side of the slider 16. Under the action of the connecting rod 17, the connecting rod 17 is embedded in the inside of the brush rod 11, so that the brush rod 11 can drive the slider 16 to slide, thereby increasing the integrity of the brush rod 11 and the supporting shell 2 and making the rotation more stable.

[0030] Among them, the centrifugal fan body 1 is the existing technology and will not be described in detail; at the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail.

[0031] Working principle and process:

[0032] When the staff needs to install the mesh cover body 6, first press the mesh cover body 6 from one end of the supporting shell 2 into the interior thereof, so that the mesh cover body 6 squeezes the trapezoidal block 5, and the limiting block 14 fixedly connected to the outside of the mesh cover body 6 is embedded in the limiting groove 13, thereby fixing the position of the mesh cover body 6. Then the trapezoidal block 5 squeezes the spring 4 fixedly connected to the inside of the annular groove 3 upward, and one side of the mesh cover body 6 fits with the fixing ring block 7, so that the mesh cover body 6 is embedded in the fixing ring block 7 to the inside. Under the action of the fixing column 15, the mesh cover body 6 can be fixed to prevent it from rotating. Under the action of the spring 4, an elastic force is applied to the trapezoidal block 5 to make it return to its original position, and the mesh cover body 6 is limited, thereby realizing the rapid installation of the mesh cover body 6. There is no need to connect parts such as bolts 19, which is convenient and fast, reduces the risk of damage, and improves the installation speed. After using for a period of time, some dust will accumulate on the mesh cover body 6, which will affect the heat dissipation of the centrifugal fan. At this time, the brush rod 11 is rotated to rotate from the inside of the connecting plate 10 to the outside of the mesh cover body 6, and the bolt 19 is inserted into the inside of the first insertion hole 20 to fix the brush rod 11 and prevent it from rotating. Under the action of the connecting rod 17, the connecting rod 17 is embedded in the inside of the brush rod 11, so that the brush rod 11 can drive the slider 16 to slide, thereby increasing the integrity of the brush rod 11 and the support shell 2, making the rotation more stable. Next, the rotating ring 8 is rotated to drive the fixing block 9 to rotate, the fixing block 9 drives the connecting plate 10, and the connecting plate 10 drives the brush rod 11 to rotate, so that the brush rod 11 cleans the outside of the mesh cover body 6, thereby removing the dust accumulated on the outside of the mesh cover body 6, improving the heat dissipation efficiency of the centrifugal fan, and increasing the service life of the mesh cover body 6.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the 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. A centrifugal fan external mesh cover, comprising a centrifugal fan body (1), characterized in that: A support shell (2) is fixedly connected to one side of the centrifugal fan body (1); an annular groove (3) is provided inside the support shell (2); a spring (4) is fixedly connected to the inner wall of the annular groove (3); a trapezoidal block (5) is fixedly connected to one end of the spring (4); a mesh cover body (6) is fitted on one side of the trapezoidal block (5); and a fixed annular block (7) is fitted on the outer side of the mesh cover body (6).

2. The external mesh cover of a centrifugal fan according to claim 1, characterized in that: The centrifugal fan body (1) is rotatably connected to a rotating ring (8) inside, the rotating ring (8) is fixedly connected to a fixed block (9) outside, one side of the fixed block (9) is fixedly connected to a connecting plate (10), the connecting plate (10) is rotatably connected to a brush rod (11) inside, and the brush rod (11) is connected to a rotating shaft (12) through its interior.

3. The external mesh cover of a centrifugal fan according to claim 1, characterized in that: A limiting groove (13) is provided on one side of the trapezoidal block (5), the outer side of the mesh cover body (6) is fixedly connected to the limiting block (14), and the cross-sectional area of ​​the limiting groove (13) is the same as the cross-sectional area of ​​the limiting block (14).

4. The external mesh cover of a centrifugal fan according to claim 1, characterized in that: The interior of the fixed ring block (7) is fixedly connected with a fixing column (15), and the number of the fixing columns (15) is four.

5. The external mesh cover of a centrifugal fan according to claim 2, characterized in that: A second insertion hole (21) is provided in the middle of the brush rod (11), and the straight-line distance between the second insertion hole (21) and the rotating shaft (12) is the same as the straight-line distance between the rotating shaft (12) and the fixed block (9).

6. The external mesh cover of a centrifugal fan according to claim 2, characterized in that: A bolt (19) is inserted and connected inside the fixing block (9), and a first insertion hole (20) is opened at one end of the brush rod (11), and the cross-sectional area of ​​the first insertion hole (20) is the same as the cross-sectional area of ​​the bolt (19).

7. The external mesh cover of a centrifugal fan according to claim 2, characterized in that: A connection groove (18) is provided on one side of the brush rod (11), a slider (16) is slidably connected to the inside of the centrifugal fan body (1), and a connection rod (17) is fixedly connected to one side of the slider (16).

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