Dust removal mechanism for optical filter coating machine

Abstract

The utility model provides a dust removal mechanism for an optical filter coating machine, which relates to the technical field of dust removal mechanisms and comprises a box body, an air inlet pipe is arranged at one end of the box body, a fan is arranged at the other end of the box body, a dust collection box and a filter plate are arranged in the box body, and an anti-overflow structure is arranged at the upper end of the dust collection box. The anti-overflow structure comprises a trapezoid frame and L-shaped through holes, at least four L-shaped through holes are formed in the bottom wall of the trapezoid frame, and a baffle and a spiral blade are arranged in each L-shaped through hole. The moving direction of dust can be changed through the baffle, due to the action of gravity, the dust can fall down along the baffle instead of directly overflowing through the L-shaped through hole, the spiral blade is pushed by airflow, the direction of the airflow can be changed, the capacity that the airflow carries the dust to pass through the L-shaped through hole is reduced, and the dust removal effect is improved. And therefore, the overflow amount of dust is effectively reduced through cooperation of the spiral blade and the baffle, the filter screen is prevented from being blocked again, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal mechanism technical field, concretely relates to a dust removal mechanism for filter glass coating machine. BACKGROUND

[0002] Coating is a process of forming one or more thin films on the surface of a filter glass. The thickness of these thin films is usually in the range of nanometers to microns. If there are dust particles in the space, the dust may fall onto the surface of the filter glass during the coating process. When the coating material is deposited, the dust will become an impurity and be wrapped in the coating layer, causing the coating surface to be uneven. For example, for interference filter glasses, their working principle is based on thin film interference, and the flatness and uniformity of the coating layer are crucial to their optical performance. If there is dust, it will destroy the regularity of the interference fringes, causing changes in the optical parameters of the filter glass such as transmittance and reflectance, and the filter glass will not achieve the expected filtering effect; when the dust is wrapped in the coating layer, it may become a stress concentration point during the use of the filter glass. Over time and under the influence of environmental factors such as temperature changes and humidity changes, the coating layer may crack or peel around the dust particles; therefore, it is necessary to use a dust removal device to remove dust from the coating space environment.

[0003] As prior art application number CN202221705078.X discloses a dust removal mechanism for filter glass coating machine, which comprises a fixed seat fixed on the top of the coating machine, a negative pressure box arranged on the fixed seat, and a gas guide bucket fixed to one end of the negative pressure box. The first box body and the second box body are connected by plug-in connection. The dust removal mechanism further comprises a sound attenuation assembly, which comprises a fixed cover, a partition plate arranged in the fixed cover, a first air outlet pipe, and a second air outlet pipe. One end of the fixed cover is provided with an air outlet connected with the filter channel, and the other end is provided with an opening. The partition plate is spaced apart and provided with a plurality of partition plates, and a gas guide cavity is formed between adjacent two partition plates. The outer circumferential wall of the first air outlet pipe and the second air outlet pipe is provided with a plurality of air outlet holes.

[0004] The above prior art is known through actual use, which mainly generates negative pressure in the negative pressure box by starting the air pump to make the air containing dust from the outside enter, and then filters the air through the filter plate, so that the dust falls into the discharge pipe for collection, achieving the purpose of dust removal. However, it is found in use that the dust in the discharge pipe will be blown out by the flowing air current and overflow again due to the influence of the air pump, which will easily cause the dust to be adsorbed on the surface of the filter screen and block the filter screen, and also adsorbed on the surface of the electronic parts in the equipment, resulting in reduced service life of the equipment. Therefore, we improve the above scheme according to the actual use. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model aims to provide a dust removal mechanism for filter glass coating machine.

[0006] To achieve the technical purpose, the utility model discloses a scheme that a dust removal mechanism for filter coating machine, including the box, one end of the box is provided with the air inlet pipe, the other end of the box is provided with the fan, be provided with the dust collection box and filter plate in the box, the upper end of the dust collection box is provided with the anti -overflow structure, the anti -overflow structure includes trapezoidal frame and L -shaped through -hole, the bottom wall of trapezoidal frame is provided with at least four L -shaped through -hole and is provided with baffle and spiral blade in each L -shaped through -hole.

[0007] Preferably, the upper end of the box is integrally provided with a handle, the lower end of the box is provided with a universal locking wheel, and the one end of the box is fixed with a buzzer through bolts.

[0008] Preferably, the top wall of the box is fixed with a filter plate through a mounting bracket, and a air duct is arranged between one side of the filter plate and the fan; one end of the air duct is welded with the input end of the fan, and the other end of the air duct is abutted with one side of the filter plate through a sealing ring.

[0009] Preferably, the bottom wall of the box near the air inlet pipe is integrally provided with a guide plate, and the upper surface of the guide plate is inclined.

[0010] Preferably, the upper end of the dust collection box is provided with an opening, and the opening is abutted with the outer surface of the trapezoidal frame through a sealing ring; the inner wall of the trapezoidal frame is further abutted with the periphery of the filter plate through a sealing strip.

[0011] Preferably, the bottom wall of each L-shaped through-hole is integrally provided with a baffle, and the baffle is inclined; the upper surface of each baffle is welded with a connecting shaft, and the upper end of the connecting shaft is rotatably installed with a spiral blade through a bearing.

[0012] Preferably, the inner wall of the dust collection box is provided with an ultrasonic sensor, the front side of the dust collection box is fixed and communicated with a threaded cylinder, and one end of the threaded cylinder is threadedly provided with a threaded cover. Advantages

[0013] In the utility model, after the dust enters the dust collection box, the dust tries to pass through the L-shaped through-hole in the anti-overflow structure under the action of air flow, box vibration and other factors, the baffle changes the movement direction of the dust, and the dust falls along the baffle due to the action of gravity, instead of directly overflowing through the L-shaped through-hole; in the case that the spiral blade is rotated by the air flow, the direction of the air flow is also changed, the ability of the air flow to carry dust through the L-shaped through-hole is reduced, the overflow amount of dust is effectively reduced through the cooperation of the spiral blade and the baffle, and the filter screen is prevented from being blocked again, thereby improving the service life of the equipment.

[0014] When the dust passes through the L-shaped through-hole in the anti-overflow structure, the dust is blocked by the inclined baffle and the speed of falling is slowed down, so that the dust raising during the dust collection process is reduced.

[0015] After dust collection, the thickness of the dust can be monitored in real time by the ultrasonic sensor, and when the thickness of the dust reaches the preset value of the system, the buzzer will be started by the control system to alarm, thereby reminding the user to clean the dust in the dust collection box in time. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the connecting structure in the box of the utility model;

[0018] Figure 3 It is a schematic diagram of the anti-overflow structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the anti-overflow structure of the utility model; Figure 3 It is an enlarged schematic diagram of a position a in the middle.

[0020] 1, box; 2, air inlet pipe; 3, fan; 4, dust collection box; 5, anti-overflow structure; 51, trapezoidal frame; 52, L-shaped through hole; 53, baffle; 54, connecting shaft; 55, spiral blade; 6, filter plate; 7, handle; 8, buzzer; 9, air duct; 10, guide plate; 11, threaded cylinder; 12, threaded cover; 13, ultrasonic sensor. DETAILED DESCRIPTION

[0021] The utility model will be further described in detail below in combination with the drawings and specific embodiments. In order to describe the technical scheme clearly and completely, the following embodiments are selected for description; based on the content described in the present application, other embodiments obtained without creative labor are within the scope of protection of the utility model.

[0022] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top / bottom" and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of clearly describing the embodiments, and do not indicate or imply that the devices or elements referred to must have a particular orientation, so it cannot be understood as a limitation on the present application.

[0023] For example, Figures 1 to 4As shown, the embodiment of the present application provides a dust removal mechanism for filter coating machine, comprising a box 1, one end of the box 1 is provided with an air inlet pipe 2, the other end of the box 1 is provided with a fan 3, the box 1 is provided with a dust collection box 4 and a filter plate 6, the upper end of the dust collection box 4 is provided with an anti-overflow structure 5; the anti-overflow structure 5 comprises a trapezoidal frame 51 and an L-shaped through hole 52, the bottom wall of the trapezoidal frame 51 is provided with at least four L-shaped through holes 52, and each L-shaped through hole 52 is provided with a baffle 53 and a spiral blade 55. The filter plate 6 is made of polypropylene fiber, which is relatively soft and can be made into a filter screen with uniform pore size through melt blowing process. The fiber diameter is usually about 10-50 microns, which can be used for filtering most dust and impurities;

[0024] Reference Figure 2 The upper end of the box 1 is integrally provided with a handle 7, the lower end of the box 1 is provided with a universal locking wheel, and one end of the box 1 is fixedly provided with a buzzer 8 through bolts. The top wall of the box 1 is fixedly provided with the filter plate 6 through a mounting bracket, and a air duct 9 is arranged between one side of the filter plate 6 and the fan 3; one end of the air duct 9 is welded with the input end of the fan 3, and the other end of the air duct 9 is abutted with one side of the filter plate 6 through a sealing ring; the bottom wall of the box 1 close to the air inlet pipe 2 is integrally provided with a guide plate 10, and the upper surface of the guide plate 10 is inclined.

[0025] Reference Figure 3 And Figure 4 The bottom wall of each L-shaped through hole 52 is integrally provided with a baffle 53, and the baffle 53 is inclined. The upper surface of each baffle 53 is welded with a connecting shaft 54, and the upper end of the connecting shaft 54 is rotatably installed with a spiral blade 55 made of plastic through a bearing. The inner wall of the dust collection box 4 is provided with an ultrasonic sensor 13, the front side of the dust collection box 4 is fixedly provided with a threaded cylinder 11, and one end of the threaded cylinder 11 is threadedly provided with a threaded cover 12 to facilitate the discharge of dust in the dust collection box 4.

[0026] Working principle: start the fan 3 to accelerate the air flow rate in the box 1, so that the air containing dust enters the box 1 from the air inlet pipe 2, and the air containing dust is guided by the guide plate 10 to make the air containing dust fully contact and filter the filter plate 6, the filtered air is discharged through the fan 3, and the dust falls into the trapezoidal frame 51 under the action of gravity and enters the L-shaped through hole 52, and finally enters the dust collection box 4 for collection.

[0027] When the dust passes through the L-shaped through hole 52, it will be blocked by the inclined baffle 53, so as to slow down the falling speed of the dust and reduce the dust raising during the dust collecting process; after the dust enters the dust collecting box 4, when the dust tries to pass through the L-shaped through hole 52 under the action of the air flow and the vibration of the box body 1, the baffle 53 will change the movement direction of the dust. Due to the action of gravity, the dust will fall along the baffle 53 instead of directly overflowing through the L-shaped through hole 52. Moreover, under the condition that the spiral blade 55 is rotated by the air flow, the direction of the air flow will also be changed, so as to reduce the ability of the air flow to carry the dust through the L-shaped through hole 52, thereby effectively reducing the overflow amount of the dust through the cooperation of the spiral blade 55 and the baffle 53;

[0028] After the dust is collected, the thickness of the dust can be monitored in real time through the ultrasonic sensor 13, and when the thickness of the dust reaches the preset value of the system, the buzzer 8 will be started to alarm through the control system, so as to timely remind the user to clean the dust in the dust collecting box 4.

[0029] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any slight modification, equivalent replacement and improvement made according to the technical essence of the present application to the above embodiment shall be included in the protection scope of the technical scheme of the present application.

Claims

1. A dust removal mechanism for a filter coating machine, comprising a housing (1), an air inlet pipe (2) provided at one end of the housing (1), a fan (3) provided at the other end of the housing (1), and a dust collection box (4) and a filter plate (6) provided inside the housing (1), characterized in that: The upper end of the dust collecting box (4) is provided with an anti-overflow structure (5); The anti-overflow structure (5) comprises a trapezoidal frame (51) and an L-shaped through hole (52), the bottom wall of the trapezoidal frame (51) is provided with at least four L-shaped through holes (52), and each L-shaped through hole (52) is provided with a baffle (53) and a spiral blade (55).

2. The dust removal mechanism for the filter coating machine according to claim 1, characterized in that: The upper end of the box body (1) is integrally provided with a handle (7), the lower end of the box body (1) is provided with a universal locking wheel, and one end of the box body (1) is fixedly provided with a buzzer (8) through bolts.

3. The dust removal mechanism for the filter coating machine according to claim 2, characterized in that: The top wall of the box body (1) is fixed with a filter plate (6) through a mounting frame, and a wind channel (9) is arranged between one side of the filter plate (6) and the fan (3). One end of the wind channel (9) is welded with the input end of the fan (3), and the other end of the wind channel (9) is abutted against one side of the filter plate (6) through a sealing ring.

4. The dust removal mechanism for the filter coating machine according to claim 1, characterized in that: The bottom wall of the box body (1) near the air inlet pipe (2) is integrally provided with a guide plate (10), and the upper surface of the guide plate (10) is inclined.

5. The dust removal mechanism for filter coating machine according to claim 1, characterized in that: The upper end of the dust collecting box (4) is provided with an opening, and the opening is abutted against the outer surface of the trapezoidal frame (51) through a sealing ring, and the inner wall of the trapezoidal frame (51) is further abutted against the outer periphery of the filter plate (6) through a sealing strip.

6. The dust removal mechanism for filter coating machine according to claim 1, characterized in that: The bottom wall of each L-shaped through hole (52) is integrally provided with a baffle (53), the baffle (53) is inclined, the upper surface of each baffle (53) is welded with a connecting shaft (54), and the upper end of the connecting shaft (54) is rotatably installed with a spiral blade (55) through a bearing.

7. The dust removal mechanism for filter coating machine according to claim 1, characterized in that: The inner wall of the dust collecting box (4) is provided with an ultrasonic sensor (13), the front side of the dust collecting box (4) is fixed and communicated with a threaded cylinder (11), and one end of the threaded cylinder (11) is threadedly provided with a threaded cover (12).

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