Ash removal device for computer

Abstract

The invention relates to the technical field of computer display screen dust removal, and discloses a dust removal device for a computer, the dust removal device comprises a rectangular frame and a cleaning assembly arranged in the rectangular frame, the cleaning assembly comprises a U-shaped frame slidably connected to the bottom of the inner wall of the rectangular frame, and the outer wall of the U-shaped frame is fixedly connected with a forward and reverse rotation motor; the output end of the positive and negative rotation motor is fixedly connected with an output shaft, the outer wall of the output shaft is rotationally connected with the inner wall of a U-shaped frame through a bearing, the outer wall of the other end of the output shaft is fixedly connected with a gear, a sliding groove is formed in the inner wall of the side face of the U-shaped frame, and the inner wall of the sliding groove is slidably connected with a sliding block; a rack is fixedly connected to the side wall of the sliding block, the side wall of the rack is meshed with the outer wall of a gear, an electric push rod is fixedly connected to the outer wall of the gear, and by arranging the cleaning assembly, dust on the surface of the computer display screen can be conveniently cleaned through an alcohol cleaning roller.

Description

Technical Field

[0001] The present invention relates to the technical field of computer display screen dust cleaning, and specifically provides a dust cleaning device for a computer. Background Art

[0002] A computer, commonly known as a PC, is an electronic computing device used for high-speed calculations. It can perform numerical calculations, logical calculations, and also has a storage and memory function. In addition to including a CPU, motherboard, memory, power supply, keyboard, and mouse, etc., a computer display screen is one of the most important components of a computer.

[0003] According to a dust cleaning device for a computer proposed in Chinese Patent CN109865685A, in this device, through the provided first bolt, second bolt, third bolt, and fourth bolt, the first moving plate, second moving plate, third moving plate, and fourth moving plate can be moved, thereby clamping the housing on one side of the computer display screen, and achieving the fixation of the dust cleaning device on the housing on one side of the computer display screen; through the provided controller, the hydraulic telescopic rod can be extended and retracted, and the hydraulic telescopic rod drives the dust cleaning box to move back and forth, thereby driving the dust cleaning cloth to move, realizing automatic dust cleaning of the computer display screen, which brings convenience to computer users.

[0004] However, there are still some deficiencies in this patent. In this device, the dust cleaning cloth is reciprocally moved by starting the hydraulic telescopic rod to achieve dust cleaning on the surface of the computer display screen. However, since the size of the dust cleaning cloth in this device is fixed, when cleaning the surface of a larger computer display screen, the dust cleaning range of the dust cleaning cloth in this device has certain limitations, affecting the cleaning effect on the surface of the computer display screen. For this reason, we propose a dust cleaning device for a computer. Summary of the Invention

[0005] The purpose of the present invention is to provide a dust cleaning device for a computer, which solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions: A dust cleaning device for a computer, comprising a rectangular frame and a cleaning component disposed inside the rectangular frame. The cleaning component includes a U-shaped frame slidably connected to the bottom of the inner wall of the rectangular frame. A forward and reverse motor is fixedly connected to the outer wall of the U-shaped frame. An output shaft is fixedly connected to the output end of the forward and reverse motor. The outer wall of the output shaft is rotatably connected to the inner wall of the U-shaped frame through a bearing. A gear is fixedly connected to the outer wall of the other end of the output shaft. A chute is provided on the inner side wall of the U-shaped frame. A slider is slidably connected to the inner wall of the chute. A rack is fixedly connected to the side wall of the slider. The side wall of the rack is meshed with the outer wall of the gear. An electric push rod is fixedly connected to the outer wall of the gear. The output end of the electric push rod is fixedly connected to a support frame. A rotating rod is rotatably connected to the inner wall of the support frame through a bearing. An alcohol cleaning roller is fixedly connected to the outer wall of the rotating rod. By providing the cleaning component, it is convenient to clean the dust on the surface of the computer display screen through the alcohol cleaning roller.

[0007] Preferably, an adjustment component is provided on the top of the inner wall of the rectangular frame. The adjustment component includes a positioning frame fixedly connected to the top of the inner wall of the rectangular frame. A driving motor is fixedly connected to the inner wall of the positioning frame. A lead screw is fixedly connected to the output end of the driving motor. A socket block is threadedly connected to the outer wall of the lead screw. The bottom of the socket block is fixedly connected to the top of the U-shaped frame. By providing the adjustment component, after the two alcohol cleaning rollers are in contact with the surface of the computer display screen, the operator turns on the driving motor to cause the lead screw to rotate. During the rotation of the lead screw, the socket block will move along the inner wall of the positioning frame. During the movement of the socket block, the U-shaped frame will move along the inner wall of the rectangular frame, thereby driving the alcohol cleaning roller inside the U-shaped frame to move, so as to clean the dust on the surface of the computer display screen.

[0008] Preferably, a positioning component is provided on the back surface of the rectangular frame. A support plate is fixedly connected to the top back surface of the rectangular frame. A bidirectional threaded rod is rotatably connected to the inner wall of the support plate. A rotating block is fixedly connected to the outer wall of the middle part of the bidirectional threaded rod. A displacement block is threadedly connected to the outer wall of the bidirectional threaded rod. The top of the displacement block is slidably connected to the top inner wall of the support plate. A trapezoidal connecting block is fixedly connected to the side wall of the displacement block. A fixed frame is fixedly connected to the other side of the trapezoidal connecting block. A baffle is fixedly connected to the bottom side surface of the fixed frame. By providing the positioning component, when it is necessary to clean the surface of the computer display screen, in order to improve the stability of the device during the cleaning process of the computer display screen surface, the device needs to be installed on the surface of the computer display screen. At this time, the operator rotates the rotating block to cause the bidirectional threaded rod to rotate. During the rotation of the bidirectional threaded rod, the two displacement blocks will move relatively closer, causing the trapezoidal connecting block and the fixed frame to move relatively closer, and causing the side wall of the baffle to fit against the outer wall of the computer display screen, so as to facilitate the operator to install and fix the device on computer display screens of different sizes.

[0009] Preferably, the positioning component further includes a pressing plate slidably connected to the inner wall of the bottom side surface of the fixed frame. A screw rod is threadedly connected to the inner wall of the bottom of the fixed frame. An adjusting block is fixedly connected to the outer wall of one end of the screw rod. The other end of the screw rod is rotatably connected to one side of the pressing plate. A sleeve is fixedly connected to the other side of the pressing plate. A spring is fixedly connected to the inner wall of the sleeve. The other end of the spring is fixedly connected to a pressing rod. The other end of the pressing rod is fixedly connected to a sponge pressing block. After the outer wall of the baffle fits against the outer wall of the computer display screen, in order to improve the fixing effect of the computer, the operator rotates the adjusting block to cause the screw rod to move. During the movement of the screw rod, the pressing plate will move and push the sleeve to move, so that the sponge pressing block on the side wall of the sleeve squeezes the surface of the computer display screen, improving the fixing effect of the device. By providing a plurality of sponge pressing blocks, springs and pressing rods, it is convenient to fix the uneven positions on the back of the computer by the sponge pressing blocks.

[0010] Preferably, there are two alcohol cleaning rollers. The two alcohol cleaning rollers are of equal size. The two alcohol cleaning rollers are arranged in a left-right staggered manner along the central plane of the U-shaped frame. By providing two alcohol cleaning rollers, it is convenient to adjust the distance between the two alcohol cleaning rollers, so as to facilitate the cleaning of the surfaces of computer display screens of different sizes.

[0011] Preferably, the outer wall of the top of the socket block is slidably connected to the inner wall of the positioning frame. The inner wall of the socket block is threadedly connected to the outer wall of the screw rod.

[0012] Preferably, there are two baffles, the two baffles are of equal size, and the two baffles are symmetrically distributed along the central plane of the rectangular frame. By providing two baffles, it is convenient to squeeze the side walls of the baffles against the outer wall of the computer display screen, so as to fix the device on the outer wall of the computer display screen.

[0013] Preferably, the outer wall of one end of the extrusion rod is adapted to the inner wall of the sleeve, and the other end of the extrusion rod is fixedly connected to the side wall of the sponge pressing block.

[0014] The present invention provides a dust cleaning device for a computer. The dust cleaning device for a computer has the following beneficial effects:

[0015] (1) For the dust cleaning device for a computer, by providing a cleaning component, when the computer display screen is exposed to the outside for a long time, a large amount of dust is easily adsorbed on its surface. In order not to affect the use of the computer display screen, it is necessary to clean the surface of the computer display screen through the device. After the operator installs the device, the operator turns on the electric push rod to cause the electric push rod to extend and push the support frame to move, so that the outer wall of the alcohol cleaning roller inside the support frame fits against the surface of the computer display screen. Subsequently, the operator turns on the forward and reverse motor to cause the output shaft to rotate. During the rotation of the output shaft, the gear will be caused to rotate. Under the action of the gear meshing with the rack and the limiting action of the chute on the slider, the rack can be caused to move. When the two racks move relatively away from each other, the dust cleaning range of the two alcohol cleaning rollers on the surface of the computer display screen can be adjusted. By the relative movement of the two alcohol cleaning rollers, the device can clean computer display screens of different sizes, improving the dust cleaning ability of the device;

[0016] (2) For the dust cleaning device for a computer, by providing an adjustment component, after the two alcohol cleaning rollers are attached to the surface of the computer display screen, the operator turns on the drive motor to cause the lead screw to rotate. During the rotation of the lead screw, the socket block will be caused to move along the inner wall of the positioning frame. During the movement of the socket block, the U-shaped frame will be caused to move along the inner wall of the rectangular frame, thereby driving the alcohol cleaning roller inside the U-shaped frame to move, so as to clean the dust on the surface of the computer display screen by the alcohol cleaning roller.

[0017] (3) The dust cleaning device for a computer, by setting the positioning component, when it is necessary to clean the surface of the computer display screen, in order to improve the stability of the device during the dust cleaning process of the computer display screen surface, the device needs to be installed on the surface of the computer display screen. At this time, the operator turns the rotating block to cause the bidirectional threaded rod to rotate. During the rotation of the bidirectional threaded rod, the two displacement blocks will move relatively closer, causing the trapezoidal connecting block and the fixing frame to move relatively closer, and causing the side wall of the baffle to fit against the outer wall of the computer display screen, so as to facilitate the operator to install and fix the device on computer display screens of different sizes. After the outer wall of the baffle fits against the outer wall of the computer display screen, in order to improve the fixing effect of the computer, the operator turns the adjusting block to cause the screw rod to move. During the movement of the screw rod, the pressing plate will move and push the sleeve to move, so that the sponge pressing block on the side wall of the sleeve squeezes the surface of the computer display screen, improving the fixing effect of the device. By setting a plurality of sponge pressing blocks, springs and extrusion rods, it is convenient to use the sponge pressing blocks to squeeze and fix the uneven positions on the back of the computer. Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 is a partial cross-sectional view of the present invention;

[0020] Figure 3 is a schematic diagram of the back structure of the cleaning component in the present invention;

[0021] Figure 4 is a schematic diagram of the structure of the cleaning component in the present invention;

[0022] Figure 5 is Figure 4 a partial enlarged view of part A in

[0023] Figure 6 is a schematic diagram of the structure of the adjusting component in the present invention;

[0024] Figure 7 is a schematic diagram of the structure of the positioning component in the present invention;

[0025] Figure 8 is a cross-sectional view of the partial structure of the positioning component in the present invention.

[0026] In the figure: 1, rectangular frame; 21, cleaning component; 211, U-shaped frame; 212, forward and reverse motor; 213, output shaft; 214, gear; 215, chute; 216, slider; 217, rack; 218, electric push rod; 219, support frame; 2110, rotating rod; 2111, alcohol cleaning roller; 22, adjustment component; 221, positioning frame; 222, drive motor; 223, lead screw; 224, socket block; 23, positioning component; 231, support plate; 232, bidirectional threaded rod; 233, rotating block; 234, displacement block; 235, trapezoidal connecting block; 236, fixing frame; 237, baffle; 238, pressing plate; 239, screw; 2310, adjusting block; 2311, sleeve; 2312, spring; 2313, extrusion rod; 2314, sponge pressing block. Specific implementation manner

[0027] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific implementation manner of the present invention will now be described with reference to the accompanying drawings.

[0028] A preferred embodiment of the dust cleaning device for a computer provided by the present invention is as follows Figures 1 to 8As shown: A dust cleaning device for a computer, including a rectangular frame 1 and a cleaning component 21 arranged inside the rectangular frame 1. The cleaning component 21 includes a U-shaped frame 211 slidably connected to the bottom of the inner wall of the rectangular frame 1. A forward and reverse motor 212 is fixedly connected to the outer wall of the U-shaped frame 211. An output shaft 213 is fixedly connected to the output end of the forward and reverse motor 212. The outer wall of the output shaft 213 is rotationally connected to the inner wall of the U-shaped frame 211 through a bearing. A gear 214 is fixedly connected to the outer wall of the other end of the output shaft 213. A chute 215 is formed on the inner side wall of the U-shaped frame 211. A slider 216 is slidably connected to the inner wall of the chute 215. A rack 217 is fixedly connected to the side wall of the slider 216. The side wall of the rack 217 meshes with the outer wall of the gear 214. An electric push rod 218 is fixedly connected to the outer wall of the gear 214. A support frame 219 is fixedly connected to the output end of the electric push rod 218. A rotating rod 2110 is rotationally connected to the inner wall of the support frame 219 through a bearing. An alcohol cleaning roller 2111 is fixedly connected to the outer wall of the rotating rod 2110. By setting the cleaning component 21, when the computer display screen is exposed to the outside for a long time, a large amount of dust is easily adsorbed on its surface. In order not to affect the use of the computer display screen, it is necessary to clean the surface of the computer display screen through the device. After the operator installs the device, the operator turns on the electric push rod 218 to cause the electric push rod 218 to extend and push the support frame 219 to move, so that the outer wall of the alcohol cleaning roller 2111 inside the support frame 219 fits the surface of the computer display screen. Subsequently, the forward and reverse motor 212 is turned on to cause the output shaft 213 to rotate. During the rotation of the output shaft 213, the gear 214 will be caused to rotate. Under the meshing action of the gear 214 and the rack 217 and the limiting action of the chute 215 on the slider 216, the rack 217 can be caused to move. When the two racks 217 move relatively away from each other, the dust cleaning range of the two alcohol cleaning rollers 2111 on the surface of the computer display screen can be adjusted. By the relative movement of the two alcohol cleaning rollers 2111, the device can clean computer display screens of different sizes, improving the dust cleaning ability of the device.

[0029] A preferred embodiment of the dust cleaning device for a computer provided by the present invention is as follows Figures 1 to 8As shown in the figure: At the top of the inner wall of the rectangular frame 1, an adjustment component 22 is provided. The adjustment component 22 includes a positioning frame 221 fixedly connected to the top of the inner wall of the rectangular frame 1. Inside the positioning frame 221, a driving motor 222 is fixedly connected. The output end of the driving motor 222 is fixedly connected with a lead screw 223. A socket block 224 is threadedly connected to the outer wall of the lead screw 223. The bottom of the socket block 224 is fixedly connected to the top of the U-shaped frame 211. By setting the adjustment component 22, after the two alcohol cleaning rollers 2111 are in contact with the surface of the computer display screen, the operator turns on the driving motor 222 to cause the lead screw 223 to rotate. During the rotation of the lead screw 223, the socket block 224 will be prompted to move along the inner wall of the positioning frame 221. During the movement of the socket block 224, the U-shaped frame 211 will be prompted to move along the inner wall of the rectangular frame 1, thereby driving the alcohol cleaning roller 2111 inside the U-shaped frame 211 to move, so as to enable the alcohol cleaning roller 2111 to clean the dust on the surface of the computer display screen.

[0030] A preferred embodiment of the dust cleaning device for a computer provided by the present invention is as follows Figures 1 to 8 As shown in the figure: A positioning component 23 is provided on the back of the rectangular frame 1. A support plate 231 is fixedly connected to the top back of the rectangular frame 1. A bidirectional threaded rod 232 is rotatably connected to the inner wall of the support plate 231. A rotating block 233 is fixedly connected to the outer wall of the middle part of the bidirectional threaded rod 232. A displacement block 234 is threadedly connected to the outer wall of the bidirectional threaded rod 232. The top of the displacement block 234 is slidably connected to the top of the inner wall of the support plate 231. A trapezoidal connecting block 235 is fixedly connected to the side wall of the displacement block 234. The other side of the trapezoidal connecting block 235 is fixedly connected to a fixing frame 236. A baffle 237 is fixedly connected to the bottom side of the fixing frame 236. By setting the positioning component 23, when it is necessary to clean the surface of the computer display screen, in order to improve the stability of the device during the dust cleaning process of the computer display screen surface, the device needs to be installed on the surface of the computer display screen. At this time, the operator turns the rotating block 233 to cause the bidirectional threaded rod 232 to rotate. During the rotation of the bidirectional threaded rod 232, the two displacement blocks 234 will be prompted to approach each other relatively, causing the trapezoidal connecting block 235 and the fixing frame 236 to approach each other relatively, and causing the side wall of the baffle 237 to be in contact with the outer wall of the computer display screen, so as to facilitate the operator to install and fix the device on computer display screens of different sizes.

[0031] The positioning component 23 further includes a pressing plate 238 slidably connected to the inner wall of the bottom side of the fixed frame 236. A screw rod 239 is threadedly connected to the inner wall of the bottom of the fixed frame 236. One end of the outer wall of the screw rod 239 is fixedly connected with an adjusting block 2310, and the other end of the screw rod 239 is rotatably connected to one side of the pressing plate 238. The other side of the pressing plate 238 is fixedly connected with a sleeve 2311. A spring 2312 is fixedly connected to the inner wall of the sleeve 2311. The other end of the spring 2312 is fixedly connected with a pressing rod 2313. The other end of the pressing rod 2313 is fixedly connected with a sponge pressing block 2314. After the outer wall of the baffle 237 fits with the outer wall of the computer display screen, in order to improve the fixing effect of the computer, the operator rotates the adjusting block 2310 to make the screw rod 239 move. During the movement of the screw rod 239, the pressing plate 238 will be prompted to move and push the sleeve 2311 to move, so that the sponge pressing block 2314 on the side wall of the sleeve 2311 squeezes the surface of the computer display screen, improving the fixing effect of the device. By providing a plurality of sponge pressing blocks 2314, springs 2312 and pressing rods 2313, it is convenient to squeeze and fix the uneven positions on the back of the computer through the sponge pressing blocks 2314.

[0032] Further, there are two alcohol cleaning rollers 2111. The two alcohol cleaning rollers 2111 are of equal size and are arranged staggeredly left and right along the central plane of the U-shaped frame 211. By providing two alcohol cleaning rollers 2111, it is convenient to adjust the distance between the two alcohol cleaning rollers 2111, so as to facilitate the dust cleaning treatment of the surfaces of computer display screens of different sizes.

[0033] Further, the outer wall of the top of the socket block 224 is slidably connected to the inner wall of the positioning frame 221, and the inner wall of the socket block 224 is threadedly connected to the outer wall of the lead screw 223.

[0034] Further, there are two baffles 237. The two baffles 237 are of equal size and are symmetrically distributed along the central plane of the rectangular frame 1. By providing two baffles 237, it is convenient to squeeze the outer wall of the computer display screen through the side walls of the baffles 237, so as to fix the device on the outer wall of the computer display screen.

[0035] In addition, one end of the outer wall of the pressing rod 2313 is adapted to the inner wall of the sleeve 2311, and the other end of the pressing rod 2313 is fixedly connected to the side wall of the sponge pressing block 2314.

[0036] Working principle: When it is necessary to clean the dust on the surface of the computer display screen, in order to improve the stability of the device during the dust cleaning process of the computer display screen surface, the device needs to be installed on the surface of the computer display screen. At this time, the operator turns the rotating block 233 to cause the bidirectional threaded rod 232 to rotate. During the rotation of the bidirectional threaded rod 232, the two displacement blocks 234 will move relatively closer, causing the trapezoidal connecting block 235 and the fixing frame 236 to move relatively closer, and causing the side wall of the baffle 237 to fit against the outer wall of the computer display screen, so as to facilitate the operator to install and fix the device on computer display screens of different sizes;

[0037] After the outer wall of the baffle 237 fits against the outer wall of the computer display screen, in order to improve the fixing effect of the computer, the operator turns the adjusting block 2310 to cause the screw rod 239 to move. During the movement of the screw rod 239, the pressing plate 238 will move and push the sleeve 2311 to move, so that the sponge pressing block 2314 on the side wall of the sleeve 2311 squeezes the surface of the computer display screen, improving the fixing effect of the device. By setting multiple sponge pressing blocks 2314, springs 2312 and extrusion rods 2313, it is convenient to use the sponge pressing blocks 2314 to squeeze and fix the uneven positions on the back of the computer;

[0038] After the operator finishes installing the device, the operator turns on the electric push rod 218 to cause the electric push rod 218 to extend and push the support frame 219 to move, so that the outer wall of the alcohol cleaning roller 2111 inside the support frame 219 fits against the surface of the computer display screen. Subsequently, the operator turns on the forward and reverse motor 212 to cause the output shaft 213 to rotate. During the rotation of the output shaft 213, the gear 214 will rotate. Under the meshing action of the gear 214 and the rack 217, and under the limiting action of the chute 215 on the slider 216, the rack 217 can be caused to move. When the two racks 217 move relatively away from each other, the dust cleaning range of the two alcohol cleaning rollers 2111 on the surface of the computer display screen can be adjusted. By the relative movement of the two alcohol cleaning rollers 2111, the device can clean computer display screens of different sizes, improving the dust cleaning ability of the device;

[0039] After the two alcohol cleaning rollers 2111 fit against the surface of the computer display screen, the operator turns on the driving motor 222 to cause the lead screw 223 to rotate. During the rotation of the lead screw 223, the socket block 224 will move along the inner wall of the positioning frame 221. During the movement of the socket block 224, the U-shaped frame 211 will move along the inner wall of the rectangular frame 1, thereby driving the alcohol cleaning roller 2111 inside the U-shaped frame 211 to move, so as to cause the alcohol cleaning roller 2111 to clean the dust on the surface of the computer display screen.

[0040] The above are only illustrative specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention shall fall within the scope of protection of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above overall application. Each technical feature described in the specification of the present invention can be used alone according to actual needs or combined in multiple ways. Therefore, the present invention should logically cover other combinations and specific applications related to this case.

Claims

1. A dust cleaning device for a computer, comprising a rectangular frame (1) and a cleaning component (21) arranged inside the rectangular frame (1), characterized in that: The cleaning component (21) includes a U-shaped frame (211) slidably connected to the bottom of the inner wall of the rectangular frame (1). A forward and reverse motor (212) is fixedly connected to the outer wall of the U-shaped frame (211). The output end of the forward and reverse motor (212) is fixedly connected to an output shaft (213). The outer wall of the output shaft (213) is rotatably connected to the inner wall of the U-shaped frame (211) through a bearing. The outer wall of the other end of the output shaft (213) is fixedly connected to a gear (214). A chute (215) is provided on the inner side wall of the U-shaped frame (211). A slider (216) is slidably connected to the inner wall of the chute (215). A rack (217) is fixedly connected to the side wall of the slider (216). The side wall of the rack (217) meshes with the outer wall of the gear (214). An electric push rod (218) is fixedly connected to the outer wall of the gear (214). The output end of the electric push rod (218) is fixedly connected to a support frame (219). A rotating rod (2110) is rotatably connected to the inner wall of the support frame (219) through a bearing. An alcohol cleaning roller (2111) is fixedly connected to the outer wall of the rotating rod (2110).

2. The dust cleaning device for a computer according to claim 1, wherein: An adjusting component (22) is provided at the top of the inner wall of the rectangular frame (1). The adjusting component (22) includes a positioning frame (221) fixedly connected to the top of the inner wall of the rectangular frame (1). A driving motor (222) is fixedly connected to the inner wall of the positioning frame (221). The output end of the driving motor (222) is fixedly connected to a lead screw (223). A socket block (224) is threadedly connected to the outer wall of the lead screw (223). The bottom of the socket block (224) is fixedly connected to the top of the U-shaped frame (211).

3. The dust cleaning device for a computer according to claim 1, characterized in that: A positioning component (23) is provided on the back of the rectangular frame (1). A support plate (231) is fixedly connected to the top back of the rectangular frame (1). A bidirectional lead screw (232) is rotatably connected to the inner wall of the support plate (231). A rotating block (233) is fixedly connected to the outer wall of the middle part of the bidirectional lead screw (232). A displacement block (234) is threadedly connected to the outer wall of the bidirectional lead screw (232). The top of the displacement block (234) is slidably connected to the top of the inner wall of the support plate (231). A trapezoidal connecting block (235) is fixedly connected to the side wall of the displacement block (234). The other side of the trapezoidal connecting block (235) is fixedly connected to a fixing frame (236). A baffle (237) is fixedly connected to the bottom side of the fixing frame (236).

4. The dust cleaning device for a computer according to claim 3, wherein: The positioning component (23) further includes a pressing plate (238) slidably connected to the inner wall of the bottom side of the fixing frame (236). A screw rod (239) is threadedly connected to the inner wall of the bottom of the fixing frame (236). One end of the outer wall of the screw rod (239) is fixedly connected with an adjusting block (2310), and the other end of the screw rod (239) is rotatably connected to one side of the pressing plate (238). The other side of the pressing plate (238) is fixedly connected with a sleeve (2311). A spring (2312) is fixedly connected to the inner wall of the sleeve (2311), and the other end of the spring (2312) is fixedly connected with an extrusion rod (2313). The other end of the extrusion rod (2313) is fixedly connected with a sponge pressing block (2314).

5. The dust cleaning device for a computer according to claim 1, wherein: The number of the alcohol cleaning rollers (2111) is two. The two alcohol cleaning rollers (2111) are of equal size and are arranged in a left-right staggered manner along the central plane of the U-shaped frame (211).

6. The dust cleaning device for a computer according to claim 2, characterized in that: The outer wall of the top of the socket block (224) is slidably connected to the inner wall of the positioning frame (221), and the inner wall of the socket block (224) is threadedly connected to the outer wall of the screw rod (223).

7. The dust cleaning device for a computer according to claim 3, characterized in that: The number of the baffles (237) is two. The two baffles (237) are of equal size and are symmetrically distributed along the central plane of the rectangular frame (1).

8. The dust cleaning device for a computer according to claim 4, characterized in that: One end of the outer wall of the extrusion rod (2313) is adapted to the inner wall of the sleeve (2311), and the other end of the extrusion rod (2313) is fixedly connected to the side wall of the sponge pressing block (2314).

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