An air inlet dust isolation net shell for a high-power fan

Abstract

The present invention belongs to the technical field of dust-proof equipment, and discloses an air inlet dust-proof mesh shell for a high-power fan, comprising a mounting block, a mesh shell body fixedly mounted on the front of the mounting block, a mesh plate movably connected to the interior of the mesh shell body, a movable structure fixedly mounted on the top of the mesh shell body, and a connecting structure fixedly connected to the back of the movable structure. The present invention coordinates the mesh shell body, the movable structure, and the rotating structure, so that when the fan is not in use, its interior can be well sealed and protected, that is, the two limit blocks are fixed as a whole. At this time, the covering cloth will also have a comprehensive covering effect on the front of the inner cavity of the mesh shell body, thereby effectively avoiding the entry of external impurities when the high-power fan is not in use, thereby protecting it.

Description

Technical Field

[0001] The invention belongs to the technical field of dust isolation equipment, in particular to an air inlet dust isolation net shell for a high-power fan. Background Art

[0002] High-power fans are generally used in some high-power heaters in the industrial field, mainly in some large industrial places such as workshops and factories. In order to ensure their normal use, dust-proof net shells are often installed at the air inlet.

[0003] At present, during the use of high-power fans, a dust-proof mesh shell is usually installed at the air inlet of the fan to prevent a large amount of dust or other impurities from entering the interior, thereby affecting the subsequent normal use. However, in actual use, the existing air inlet dust-proof mesh shells for high-power fans usually only use mesh plates and install them at the air inlet of the fan with bolts. This operation method is too simple and the installation and disassembly are extremely inconvenient. At the same time, when the fan is not in use, since the mesh plate is hollow, it is inevitable that some other impurities will fall into the interior of the fan due to the negligence of the staff, thereby affecting the normal use of the subsequent fan to a certain extent. Therefore, it needs to be improved. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides an air inlet dust-proof mesh shell for a high-power fan, which has the advantages of protecting the interior of the fan, being easy to install and disassemble and easy to clean, and improving the dust-proof effect to a certain extent.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an air inlet dust-proof mesh shell for a high-power fan, comprising a mounting block, a mesh shell body fixedly mounted on the front of the mounting block, a mesh plate movably connected to the interior of the mesh shell body, a movable structure fixedly mounted on the top of the mesh shell body, a connecting structure fixedly connected to the back of the movable structure, a rotating structure movably connected to the front of the inner cavity of the mesh shell body, and limiting blocks fixedly connected to the left and right sides of the bottom end of the rotating structure.

[0006] In the above technical solution, preferably, the inner ends of the two limit blocks are fixedly connected to a third spring telescopic cylinder, and the middle end of the back side of the mesh plate is movably connected to an adjustment structure.

[0007] In the above technical solution, preferably, the movable structure includes a hollow shell, the bottom of the hollow shell is fixedly connected to the top of the lattice shell body, the interior of the hollow shell is movably connected with a pressing rod, the top end of the pressing rod passes through the hollow shell and extends to the top of the hollow shell, the outer surface of the upper end of the pressing rod is movably sleeved with a flexible spring, the top and bottom of the flexible spring are fixedly connected to the pressing rod and the hollow shell from top to bottom in sequence, the interior of the hollow shell is movably clamped with a moving rod, the left end of the moving rod passes through the hollow shell and extends to the left side of the hollow shell.

[0008] In the above technical solution, preferably, the connecting structure includes an arc block, and the number of the arc blocks is two. The inner ends of the two arc blocks are movably connected to the inner wall of the mounting block, and the bottom of the arc block is fixedly connected to the first spring telescopic cylinder, and the bottom of the first spring telescopic cylinder is fixedly connected to the mounting block. The inner ends of the left sides of the two arc blocks are movably clamped with a pressure rod, and the bottom end of the upper pressure rod passes through the mounting block and the hollow shell from right to left and extends to the interior of the hollow shell, the right sides of the two pressure rods are fixedly connected to the second spring telescopic cylinder, and the right end of the second spring telescopic cylinder is fixedly connected to the mounting block, and the left and right sides of the two pressure rods are fixedly connected to the fixed blocks.

[0009] In the above technical solution, preferably, the rotating structure includes a first rectangular rod and a second rectangular rod, the bottom ends of the first rectangular rod and the second rectangular rod are movably connected to the inner wall of the lattice shell body, the internal bearing of the second rectangular rod is connected to a circular shaft, the surface of the circular shaft is fixedly connected to a covering cloth, and the left end of the covering cloth is fixedly connected to the right side of the first rectangular rod.

[0010] In the above technical solution, preferably, the adjustment structure includes a first gear, the left end of the first gear is fixedly connected to the mesh plate, the right end of the first gear is internally meshed with a second gear, and the right side of the second gear is fixedly sleeved with a rotating block.

[0011] In the above technical solution, preferably, arc-shaped slots are opened on the surface of the lattice shell body, the arc-shaped slots of the lattice shell body are matched with the slots inside the mesh plate, and the lattice shell body and the mesh plate are both in the shape of round blocks.

[0012] In the above technical solution, preferably, the pressing rod is composed of two parts, the lower part of the pressing rod is trapezoidal, and both left and right sides are smooth, and the upper part of the pressing rod is in the shape of a "T".

[0013] In the above technical solution, preferably, the covering cloth is made of rubber cloth, the width of the inner cavity of the second rectangular rod is larger than the area size of the circular axis and the covering cloth, and the area size of the covering cloth is adapted and snapped into the surface value of the front side of the inner cavity of the lattice shell body.

[0014] In the above technical solution, preferably, the interiors of the outer ends of the two limit blocks are hollow, the area size of the left side of the limit block at the left end is adapted to the width value of the inner cavity on the right side of the limit block at the right end, and the inner diameter values of the notches of the two limit blocks are adapted to the outer diameter value of the moving rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention cooperates with the grid shell body, the movable structure and the rotating structure to achieve a good sealing and protection effect on the interior of the fan when not in use. By pulling the first rectangular rod and the second rectangular rod, the movement of the first rectangular rod and the second rectangular rod will cause the first rectangular rod to drive the cover cloth to detach from the interior of the second rectangular rod. At this time, due to the continuous pulling of the first rectangular rod and the second rectangular rod, the left side of the left end limit block will gradually move to the interior of the right end limit block. At this time, due to the movement of the limit block, the third spring telescopic cylinder will also move together. Subsequently, due to the mutual adaptation of the moving rod and the limit block groove, the moving rod can be stuck into the interior of the limit block, that is, a fixing effect of the two limit blocks as a whole is achieved. At this time, the cover cloth will also fully cover the front of the inner cavity of the grid shell body, thereby effectively preventing the entry of external impurities when the high-power fan is not in use, thereby protecting it.

[0017] 2. The present invention improves the efficiency of installation and disassembly of the entire mounting block by arranging the coordination of structures such as the arc block and the pressure rod. When the pressure rod moves to the left, the fixing effect of the right end of the pressure rod and the arc block will be released. Then, due to the elastic force of the first spring telescopic tube, the top of the arc block will fit into the inner wall of the fan air inlet. Due to the design of the fixing block, the fixing effect of the two arc blocks will be released at the same time, and the complexity of using the bolt method is effectively avoided. On the contrary, when the entire mounting block needs to be cleaned, the mounting block is pressed upward or downward to push the arc block to move, and then the pressure rod is moved to the inside of the arc block. At this time, the mounting block will fix the arc block. After that, the staff can take out the entire mounting block from the fan air inlet and clean it, thereby improving the subsequent dust isolation effect to a certain extent.

[0018] 3. The present invention improves the dust isolation effect of the wind shell to a certain extent by setting up the coordination of structures such as the mesh plate and the adjustment structure. By rotating the rotating block, the rotation of the rotating block will cause the second gear to drive the first gear to move together. At this time, the first gear will also drive the mesh plate to rotate in the inner cavity of the mesh shell body. Since the mesh plate is consistent in shape with the mesh shell body, when the mesh plate is rotated so that it is misaligned with the notch of the mesh shell body and no longer corresponds to each other, the blocking effect on external dust will be increased, thereby effectively improving the dust isolation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the present invention from a top view;

[0021] Figure 3 It is a schematic cross-sectional structural diagram of the side of the present invention;

[0022] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at A in the middle;

[0023] Figure 5 This is a schematic diagram of the structural coordination relationship between the arc block and the fixed block of the present invention;

[0024] Figure 6 This is a schematic diagram of the structural coordination relationship between the lattice shell body and the rotating structure of the present invention;

[0025] Figure 7 Schematic diagram of the internal structure of the rotating structure of the present invention;

[0026] Figure 8 Schematic diagram of the structural coordination relationship between the second rectangular rod and the limiting block of the present invention;

[0027] Figure 9 A schematic diagram of the structural coordination relationship between the screen plate and the adjustment structure of the present invention;

[0028] Figure 10 It is a schematic diagram of the structural coordination relationship between the covering cloth and the limiting block of the present invention.

[0029] In the figure: 1. Mounting block; 2. lattice shell body; 3. lattice plate; 4. Movable structure; 41. Hollow shell; 42. Pressing rod; 43. Flexible spring; 44. Moving rod; 5. Connecting structure; 51. Arc block; 52. First spring telescopic cylinder; 53. Pressure rod; 54. Second spring telescopic cylinder; 55. Fixed block; 6. Rotating structure; 61. First rectangular rod; 62. Second rectangular rod; 63. Circular shaft; 64. Covering cloth; 7. Limiting block; 8. Third spring telescopic cylinder; 9. Adjusting structure; 91. First gear; 92. Second gear; 93. Rotating block. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figures 1 to 10 As shown, the present invention provides an air inlet dust-proof mesh shell for a high-power fan, comprising a mounting block 1, a mesh shell body 2 fixedly mounted on the front of the mounting block 1, a mesh plate 3 movably connected to the interior of the mesh shell body 2, a movable structure 4 fixedly mounted on the top of the mesh shell body 2, a connecting structure 5 fixedly connected to the back of the movable structure 4, a rotating structure 6 movably connected to the front of the inner cavity of the mesh shell body 2, and a limiting block 7 fixedly connected to the left and right sides of the bottom end of the rotating structure 6.

[0032] like Figure 3 and Figure 8 As shown, the inner ends of the two limit blocks 7 are fixedly connected to the third spring telescopic cylinder 8, and the middle end of the back of the mesh plate 3 is movably connected to the adjustment structure 9;

[0033] Adopting the above scheme: through the design of the third spring telescopic cylinder 8, after the rotating structure 6 is active, the third spring telescopic cylinder 8 will exert an elastic force on the rotating structure 6, thereby making it more labor-saving and convenient in subsequent adjustments. At the same time, due to the design of the adjustment structure 9, the adjustment structure 9 can exert a limiting effect on the mesh plate 3, thereby restricting the movement of the mesh plate 3, thereby making the dust isolation effect of the fan better to a certain extent, ensuring the normal use of the subsequent high-power fan.

[0034] like Figure 4 As shown, the movable structure 4 includes a hollow shell 41, the bottom of the hollow shell 41 is fixedly connected to the top of the lattice shell body 2, and a pressing rod 42 is movably connected inside the hollow shell 41. The top of the pressing rod 42 passes through the hollow shell 41 and extends to the top of the hollow shell 41. The outer surface of the upper end of the pressing rod 42 is movably sleeved with a flexible spring 43. The top and bottom of the flexible spring 43 are fixedly connected to the pressing rod 42 and the hollow shell 41 from top to bottom. A moving rod 44 is movably clamped inside the hollow shell 41. The left end of the moving rod 44 passes through the hollow shell 41 and extends to the left side of the hollow shell 41.

[0035] Adopting the above-mentioned scheme: through the design of the movable structure 4, when pressure is applied to the flexible spring 43, the left and right sides of the inner cavity of the hollow shell 41 will be movable, thereby saving the operation process of the staff to a certain extent, thereby improving work efficiency and making operation more convenient.

[0036] like Figure 4 and Figure 5 As shown, the connecting structure 5 includes an arc block 51, and there are two arc blocks 51. The inner ends of the two arc blocks 51 are movably connected to the inner wall of the mounting block 1. The bottom of the arc block 51 is fixedly connected to the first spring telescopic cylinder 52, and the bottom of the first spring telescopic cylinder 52 is fixedly connected to the mounting block 1. The inner ends of the left sides of the two arc blocks 51 are movably connected to the pressure rod 53. The bottom end of the upper pressure rod 53 passes through the mounting block 1 and the hollow shell 41 from right to left and extends to the interior of the hollow shell 41. The right sides of the two pressure rods 53 are fixedly connected to the second spring telescopic cylinder 54. The right end of the second spring telescopic cylinder 54 is fixedly connected to the mounting block 1. The left and right sides of the two pressure rods 53 are fixedly connected to fixed blocks 55.

[0037] The above solution is adopted: through the design of the connecting structure 5, when the pressure rod 53 is detached from the inside of the arc block 51, the arc block 51 will move upward due to the elastic force of the first spring telescopic cylinder 52, and the fixing effect of the arc block 51 and the pressure rod 53 will be released, so that the top of the arc block 51 can fit well with the inner wall of the air inlet of the fan, so that the overall lattice shell body 2 is easy to install and disassemble to a certain extent, and it can be cleaned in time, thereby ensuring the normal use of subsequent fans.

[0038] like Figure 7 As shown, the rotating structure 6 includes a first rectangular rod 61 and a second rectangular rod 62. The bottom ends of the first rectangular rod 61 and the second rectangular rod 62 are movably connected to the inner wall of the lattice shell body 2. The internal bearing of the second rectangular rod 62 is connected to a circular shaft 63. The surface of the circular shaft 63 is fixedly connected to a covering cloth 64. The left end of the covering cloth 64 is fixedly connected to the right side of the first rectangular rod 61.

[0039] Adopting the above-mentioned scheme: through the design of the rotating structure 6, when the first rectangular rod 61 is pulled to drive the covering cloth 64 to detach from the inside of the second rectangular rod 62, and the first rectangular rod 61 is pulled to rotate one circle, the covering cloth 64 brought by the first rectangular rod 61 will have a closed covering effect on the mesh shell body 2, thereby making it possible to play a good closed and protective role inside the mesh shell when it is not in use, thereby effectively preventing other impurities or Cordyceps from affecting subsequent use.

[0040] like Figure 9As shown, the adjustment structure 9 includes a first gear 91, the left end of the first gear 91 is fixedly connected to the screen plate 3, the right end of the first gear 91 is internally meshed with a second gear 92, and the right side of the second gear 92 is fixedly sleeved with a rotating block 93;

[0041] The above solution is adopted: through the design of the adjustment structure 9, when the rotating block 93 is rotated, the rotation of the rotating block 93 will cause the second gear 92 to drive the first gear 91 to move. At this time, the surface of the first gear 91 will also drive the mesh plate 3 to move together, causing it to rotate. Due to the coordinated use of the rotation of the adjustment structure 9, the dust isolation effect of the dust isolation mesh shell of the fan is better to a certain extent. At the same time, the adjustment structure 9 can also play a role in limiting the mesh plate 3, so that it will not shake left and right when it moves.

[0042] like Figure 3 As shown, the surface of the lattice shell body 2 is provided with arc-shaped slots, and the arc-shaped slots of the lattice shell body 2 are adapted to the slots inside the mesh plate 3. The lattice shell body 2 and the mesh plate 3 are both in the shape of round blocks.

[0043] Adopting the above solution: through the design of the mesh shell body 2 and the mesh plate 3, when the fan is in normal use, the mesh shell body 2 and the mesh plate 3 will have a certain blocking effect on external impurities, and thus to a certain extent block the external dust, which brings the dust isolation effect to a new level.

[0044] like Figure 4 As shown, the pressing rod 42 is composed of two parts, the lower part of the pressing rod 42 is trapezoidal in shape, and both left and right sides are smooth, and the upper part of the pressing rod 42 is in the shape of a "T";

[0045] Adopting the above solution: through the design of the pressing rod 42, when the pressing rod 42 is pulled upward or pushed downward, the right end of the moving rod 44 and the left end of the pressure rod 53 will move along the left and right sides of the pressing rod 42. Since the left and right sides of the pressing rod 42 are both inclined, the moving rod 44 and the pressure rod 53 have a buffering effect when they move, thereby ensuring the stability of the two during movement.

[0046] like Figure 7 As shown, the covering cloth 64 is made of rubber cloth, the width of the inner cavity of the second rectangular rod 62 is greater than the area size of the circular shaft 63 and the covering cloth 64, and the area size of the covering cloth 64 is adapted to the surface value of the front surface of the inner cavity of the lattice shell body 2;

[0047] The above solution is adopted: through the design of the second rectangular rod 62 and the circular shaft 63, since the circular shaft 63 is connected to the inner wall of the second rectangular rod 62 by a bearing, when the inner ends of the first rectangular rod 61 and the second rectangular rod 62 gradually fit together, the covering cloth 64 will be wound on the surface of the circular shaft 63 and then located inside the second rectangular rod 62. Conversely, when the first rectangular rod 61 moves outward, the covering cloth 64 will be driven out from the inside of the second rectangular rod 62, thereby playing a certain blocking and protective role for the lattice shell body 2.

[0048] like Figure 8 As shown, the interiors of the outer ends of the two limit blocks 7 are hollow, the area of the left side of the left limit block 7 is adapted to the width of the inner cavity on the right side of the right limit block 7, and the inner diameters of the notches of the two limit blocks 7 are adapted to the outer diameter of the moving rod 44;

[0049] The above solution is adopted: through the design of the notch of the limit block 7, when the two limit blocks 7 are pulled to move and the left end of the left limit block 7 is inserted into the inner cavity of the right limit block 7, the moving rod 44 is adapted to the notch of the limit block 7, so that the moving rod 44 can be well stuck in the notch of the two limit blocks 7. At this time, it will play a limiting role on the two limit blocks 7, so that the two limit blocks 7 will not move. On the contrary, when the moving rod 44 is disengaged from the notch of the two limit blocks 7, the fixation on it will be released, thereby ensuring the subsequent blocking protection cooperation to a certain extent.

[0050] The working principle and use process of the present invention:

[0051] First, the staff rotates the rotating block 93. The rotation of the rotating block 93 will cause the second gear 92 to drive the first gear 91 to move together. Then the first gear 91 will also drive the mesh plate 3 to move in the inner cavity of the mesh shell body 2. At this time, the staff can rotate the mesh plate 3 according to the mutual correspondence between the notches on the surfaces of the mesh shell body 2 and the mesh plate 3, so that it is staggered with the notches of the mesh shell body 2. At this time, due to the non-correspondence between the notches of the mesh shell body 2 and the mesh plate 3, the blocking area to the outside world is increased, which reduces the entry of a large amount of dust to a certain extent and ensures the normal operation of the subsequent fan.

[0052] Then, the staff pulls the flexible spring 43 upward. At this time, due to the upward movement of the flexible spring 43, the second spring telescopic tube 54 will exert an elastic force on the pressure rod 53 to make it move to the left. At the same time, the moving rod 44 will also move to the right. When the pressure rod 53 moves to the left, the right end of the pressure rod 53 will be released from the fixed relationship with the arc block 51. Then, due to the action of the first spring telescopic tube 52, the top of the arc block 51 will fit against the inner wall of the fan air inlet. At the same time, due to the left movement of the moving rod 44, the moving rod 44 will be released from the two limit positions. When the slot of block 7 is disengaged, the elastic force of the third spring telescopic cylinder 8 will pull the two limit blocks 7 to move, and the two limit blocks 7 will also drive the rotating structure 6 to move together. At this time, the first rectangular rod 61 will drive the covering cloth 64 and gradually enter the interior of the second rectangular rod 62. At this time, the covering cloth 64 will release the full covering effect of the mesh shell body 2. At this time, the installation block 1 and the fan air inlet are installed. At the same time, when the fan is in use, the covering cloth 64 no longer has the effect of covering it, thereby improving the overall work efficiency to a certain extent.

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0054] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An air inlet dust-proof net housing for a high-power fan, comprising a mounting block (1), characterized in that: The front of the mounting block (1) is fixedly mounted with a lattice shell body (2), the interior of the lattice shell body (2) is movably connected to a lattice plate (3), the top of the lattice shell body (2) is fixedly mounted with a movable structure (4), the back of the movable structure (4) is fixedly connected to a connecting structure (5), the front of the inner cavity of the lattice shell body (2) is movably connected to a rotating structure (6), and the left and right sides of the bottom of the rotating structure (6) are fixedly connected to limiting blocks (7); The inner ends of the two limit blocks (7) are fixedly connected to a third spring telescopic cylinder (8), and the middle end of the back side of the mesh plate (3) is movably connected to an adjustment structure (9); The movable structure (4) comprises a hollow shell (41), the bottom of the hollow shell (41) is fixedly connected to the top of the lattice shell body (2), the interior of the hollow shell (41) is movably connected to a pressing rod (42), the top end of the pressing rod (42) passes through the hollow shell (41) and extends to the top of the hollow shell (41), the outer surface of the upper end of the pressing rod (42) is movably sleeved with a flexible spring (43), the top and bottom of the flexible spring (43) are fixedly connected to the pressing rod (42) and the hollow shell (41) in sequence from top to bottom, the interior of the hollow shell (41) is movably connected to a moving rod (44), the left end of the moving rod (44) passes through the hollow shell (41) and extends to the left side of the hollow shell (41); The connecting structure (5) includes an arc block (51), the number of the arc blocks (51) is two, the inner ends of the two arc blocks (51) are movably connected to the inner wall of the mounting block (1), the bottom of the arc block (51) is fixedly connected to a first spring telescopic cylinder (52), the bottom of the first spring telescopic cylinder (52) is fixedly connected to the mounting block (1), the inner ends of the left sides of the two arc blocks (51) are movably connected to a pressure rod (53), the bottom end of the upper pressure rod (53) passes through the mounting block (1) and the hollow shell (41) from right to left and extends to the inside of the hollow shell (41), the right sides of the two pressure rods (53) are fixedly connected to a second spring telescopic cylinder (54), the right end of the second spring telescopic cylinder (54) is fixedly connected to the mounting block (1), and the left and right sides of the two pressure rods (53) are fixedly connected to a fixed block (55).

2. The air inlet dust-proof net housing for a high-power fan according to claim 1, characterized in that: The rotating structure (6) comprises a first rectangular rod (61) and a second rectangular rod (62), the bottom ends of the first rectangular rod (61) and the second rectangular rod (62) are movably connected to the inner wall of the lattice shell body (2), the internal bearing of the second rectangular rod (62) is connected to a circular shaft (63), the surface of the circular shaft (63) is fixedly connected to a covering cloth (64), and the left end of the covering cloth (64) is fixedly connected to the right side of the first rectangular rod (61).

3. The air inlet dust-proof net housing for a high-power fan according to claim 2, characterized in that: The adjusting structure (9) includes a first gear (91). The left end of the first gear (91) is fixedly connected to the mesh plate (3). The inside of the right end of the first gear (91) is meshed with a second gear (92). A rotating block (93) is fixedly sleeved on the right side of the second gear (92).

4. The air inlet dust-proof net housing for a high-power fan according to claim 1, characterized in that: Arc-shaped slot holes are formed on the surface of the mesh shell body (2). The arc-shaped slot openings of the mesh shell body (2) are adapted to the slot openings inside the mesh plate (3). Both the mesh shell body (2) and the mesh plate (3) are in the shape of a circular block.

5. The air inlet dust-proof net housing for a high-power fan according to claim 1, characterized in that: The pressing rod (42) consists of two upper and lower parts. The lower part of the pressing rod (42) is trapezoidal, and both the left and right sides are smooth. The upper part of the pressing rod (42) is in the shape of a "T".

6. The air inlet dust-proof net housing for a high-power fan according to claim 2, characterized in that: The covering cloth (64) is made of rubber cloth. The width value of the inner cavity of the second rectangular rod (62) is greater than the area sizes of the circular shaft (63) and the covering cloth (64). The area size of the covering cloth (64) is adapted and clamped to the surface value of the front side inside the mesh shell body (2).

7. The air inlet dust-proof net housing for a high-power fan according to claim 1, characterized in that: The inner parts of the outer ends of the two limiting blocks (7) are hollow. The area size of the left side of the left limiting block (7) is adapted and clamped to the width value of the inner cavity on the right side of the right limiting block (7). The inner diameter value of the slot openings of the two limiting blocks (7) is adapted to the outer diameter value of the moving rod (44).

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