TWI717077B - Non-contact dust removal device - Google Patents

Abstract

A non-contact dust removal device is suitable for being installed on a surface and used to remove dust on an object to be dusted. The non-contact dust removal device includes a negative pressure body and a dust removal box. The negative pressure body cooperates with the surface to define a negative pressure space, and the negative pressure space is used for placing the dust-removed objects. The dust removal box includes a body surrounding a dust removal space, at least one nozzle for blowing gas toward the object to be dusted, an air supply duct for gas to enter the nozzle, and at least one for supplying gas and dust The exhaust air duct and at least one static eliminator. The dust removal space is connected to the negative pressure space. The negative pressure space is provided for placing the dust-removed objects, and the air pressure of the dust removal space and the negative pressure space is less than the outside air pressure, which has the effect of improving the dust removal effect and having a wider range of use.

Description

Non-contact dust removal device

The present invention relates to a cleaning device using air flow or gas flow, in particular to a non-contact dust removal device.

The existing non-contact dust removal device blows up the dust on the dust removal object, such as a printed circuit board, and then takes the dust away through suction to remove the dust. However, because the existing non-contact dust removal device performs dust removal operations in an open space, the effect of dust absorption is limited. It is only suitable for objects to be removed with a small height difference and the air jet distance must be maintained below 2mm. Not only is the dust removal effect poor, but also And the scope of application is limited.

Therefore, the purpose of the present invention is to provide a non-contact dust removal device with better dust removal effect and a wider application range.

Therefore, the non-contact dust removal device of the present invention is suitable for being installed on a surface and used to remove dust on the outer surface of an object to be dust removed. The non-contact dust removal device includes a negative pressure body and a dust removal box. The negative pressure body is arranged on the surface and cooperates with the surface to define a negative pressure space, and the negative pressure space is used for placing the dust-removed objects. The dust removal box is connected to the negative pressure box and includes a body surrounding and delimiting a dust removal space, at least one nozzle located in the dust removal space and used for blowing gas toward the object to be dust removed, and a nozzle connected to the nozzle and used for gas to enter The air supply duct of the nozzle, at least one exhaust duct connected to the dust removal space and used for discharging gas and dust, and at least one static eliminator located in the dust removal space and used to eliminate static electricity. The dust removal space is connected to the negative pressure space, and the air pressure of the dust removal space and the negative pressure space is less than the outside air pressure.

The effect of the present invention is that the negative pressure body of the negative pressure box cooperates with the surface to define the negative pressure space for the dust removal object to be placed, and the air pressure of the dust removal space and the negative pressure space is less than the outside air pressure. Improve the effect of dust removal and a wider range of applications.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same number, and in the following description, the conveying direction X, the left and right direction Y, and the top and bottom direction Z It is based on the orientation shown in FIG. 1, and the conveying direction X, the left-right direction Y, and the top-bottom direction Z are substantially perpendicular to each other.

1 and 2, a first embodiment of the non-contact dust removal device of the present invention is used to remove dust on the outer surface of an object to be dusted (not shown). The non-contact dust removal device includes a conveying table 1, a negative pressure box 2, and a dust removal box 3.

The conveying table 1 is formed with a surface 11 and is used to move the dust-removed objects along the conveying direction X. The conveying table 1 includes a base 12 and a conveying belt rotatably arranged on the base 12 along the conveying direction X 13, and a driver 14 for driving the conveyor belt 13 to rotate. The conveyor belt 13 is a loop-shaped belt.

The negative pressure box 2 is arranged on the surface 11 of the conveying platform 1 along the top and bottom direction Z and includes a negative pressure body 21 and two stoppers 22. The negative pressure body 21 cooperates with the surface 11 to define a negative pressure space 23, the negative pressure space 23 is used for placing the dust-removed object, and has two openings 231 oppositely arranged in the conveying direction X. Each blocking member 22 is used to cover a respective opening 231 and has a blocking door 221 pivotally connected to the negative pressure body 21, and an air cylinder 222 for pushing the blocking door 221, each blocking door 221 can be opened Ground shields the respective openings 231.

Referring to Figures 1, 3 and 4, the dust removal box 3 is arranged on the top side of the negative pressure box 2 along the top and bottom direction Z, and includes a body 32 surrounding and defining a dust removal space 31, and is located in the dust removal space 31 and used to blow air toward the dust-removed object 33, an air supply pipe 34 connected to the nozzles 33 and used for gas to enter the nozzle 33, and one connected to the dust removal space 31 and used to supply gas and dust The discharged exhaust air duct 35 and the static eliminator 36 located in the dust removal space 31 and used to eliminate static electricity.

The dust removal space 31 is connected to the negative pressure space 23, and the air pressure of the dust removal space 31 and the negative pressure space 23 is lower than the outside air pressure. The dust removal space 31 is divided into a suction chamber 311 located above the nozzle 33 and connected to the exhaust air duct 35, an air flow chamber 312 located below the nozzle 33, and two suction chambers 311 connected to the nozzle 33. The suction passages 313 of the air flow chamber 312 are spaced opposite to each other in the conveying direction X and are located on both sides of the spray head 33.

The main body 32 has an exhaust frame 321, and two guide air ducts 322 respectively connected to opposite sides of the exhaust frame 321 in the conveying direction X. The exhaust frame 321 surrounds and defines the suction chamber 311 , And has two slots 323 spaced opposite each other in the conveying direction X and connected to the suction chamber 311, and each slot 323 extends along a left-right direction Y. The guide air pipes 322 are respectively connected to the slots 323 and the air flow chamber 312, and have two spaced guide plates 324 that extend outward and then downward. The guide plates 324 surround and define the corresponding Inhalation channel 313.

In the first embodiment, the nozzles 33 are arranged on the bottom side of the exhaust frame 321 at intervals along the left and right direction Y. Each nozzle 33 can rotate around its own axis, and has two nozzles for facing the dust removal The air jet port 331 of the air jet can improve the dust removal efficiency. However, in other variations, the number of the nozzles 33 and the air jets 331 can also be one.

In the first embodiment, the exhaust air duct 35 is disposed on one side of the main body 32 along the left-right direction Y. However, in other modified examples, the number of the exhaust pipes can also be two, and they are respectively arranged on the left and right sides of the main body 32 of the main body 32, which can improve the dust removal effect.

In the first embodiment, the static eliminators 36 are arranged in two rows and are respectively located on opposite sides of the nozzles 33 in the conveying direction X, and the static eliminators 36 in each row are spaced along the left-right direction Y. However, in other variations, the number of the static eliminators 36 can also be one, which can also achieve the effect of eliminating static electricity.

The first embodiment is suitable for connecting a supply air blower (not shown in the figure) and a suction blower (not shown in the figure) to remove dust on the outer surface of the object to be dusted. The air supply blower is connected to the air supply duct 34, and the suction blower is connected to the exhaust air duct 35. The steps for dust removal in the first embodiment are as follows:

Place the dust-removed object on the conveyor belt 13 of the conveyor table 1, and the driver 14 drives the conveyor belt 13 to rotate along the conveying direction X and drives the dust-removed object to move toward the negative pressure box 2 along the conveying direction X. One of the air cylinders 222 adjacent to the dust-removed object pushes open one of the blocking doors 221, so that the dust-removed object enters the negative pressure space 23 through one of the openings 231, and the air supply blower uses the air supply duct 34. The gas is delivered to the nozzles 33, and the air jets 331 are sprayed toward the dust-removed object to raise the dust on the outer surface of the dust-removed object. The static eliminators 36 neutralize the dust and the dust. The charge on the outer surface of the dust-removed object prevents dust from being adsorbed on the dust-removed object again. At this time, the dust-containing gas is drawn from the airflow chamber 312 to the suction chamber 311 through the suction channels 313. The gas passes through the exhaust duct 35 and is discharged by the suction blower. Finally, the other cylinder 222 pushes the other blocking door 221, so that the dust-removed objects will continue to be transported by the conveyor belt 13 along the conveying direction. X drives and leaves the negative pressure space 23.

Referring to Figures 2 and 5, a modification of the first embodiment replaces the barrier 22 with a barrier 22´, each barrier 22´ has a plurality of curtains extending along the top and bottom direction Z and is flexible When the conveyor belt 13 drives the dust-removed object to move toward the negative pressure box 2, the dust-removed object can push away one of the blocking plates 221´ of the curtain 22’ and one of the The opening 231 enters the negative pressure space 23 of the negative pressure box 2. The baffles 221' are a kind of soft plastic sheets, which can be reset after being pushed apart because of their flexibility. They also have the openings 231 that can be opened to cover The efficacy. The stoppers 22 can also be replaced with a brush 22´´ as shown in Fig. 6, which has the same effect as the blinds 22´.

It should be noted that in the first embodiment, the conveying table 1 can facilitate the conveying of the dust-removed objects, but in other modified examples, the negative pressure box 2 can also be set on a desktop (not shown), It can also cooperate with the desktop to define the negative pressure space 23 for placing the dust-removed objects to have the same dust-removing effect. Therefore, the conveyor 1 can also be omitted.

In the present invention, the air pressure of the dust removal space 31 and the negative pressure space 23 is lower than the outside air pressure, and the object to be removed is placed in the negative pressure space 23 of the negative pressure box 2, so that the object to be removed does not touch the outside. The dust removal effect is improved and can be applied to the dust-removed objects of different sizes and three-dimensional structures with a large height difference to achieve a wider range of applications. Therefore, the purpose of the invention can indeed be achieved.

Referring to Figures 7 and 8, a second embodiment of the non-contact dust removal device of the present invention is substantially the same as the first embodiment, except that:

The dust removal box 3 has two exhaust air ducts 35, and the exhaust air ducts 35 are arranged on the top side of the dust removal box 3 at intervals along the left and right direction Y. The exhaust frame 321´ also has two exhaust ducts located on the top side. And respectively communicate with the exhaust holes 325 of the exhaust air ducts 35. The second embodiment not only has the same purpose and effect as the first embodiment, but also has the effect of improving the dust removal effect. However, in other embodiments, the number of the exhaust air pipes 35 and the exhaust holes 325 can also be set at one or more than two as required.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1: Conveyor 11: surface 12: Seat 13: Conveyor belt 14: drive 2: negative pressure box 21: negative pressure body 22: stop 22´: curtain 22´´:Brush 221: Block Door 221´: stop piece 222: Cylinder 23: negative pressure space 231: open 3: Dust removal box 31: Dust removal space 311: suction chamber 312: Airflow Chamber 313: Inhalation Channel 32: body 321, 321´: exhaust frame 322: Diversion duct 323: slot 324: guide plate 325: Vent 33: Nozzle 331: Jet Port 34: Air supply duct 35: Exhaust duct 36: Static Eliminator X: Conveying direction Y: left and right direction Z: Top and bottom direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view illustrating a first embodiment of the non-contact dust removal device of the present invention; Figure 2 is an incomplete schematic side view illustrating that the two cylinders of the two stoppers of a negative pressure box in the first embodiment push two stop doors respectively; Figure 3 is an incomplete perspective view of the first embodiment; Figure 4 is an incomplete cross-sectional view of the first embodiment; Figure 5 is an incomplete side view illustrating a modification of the first embodiment; Figure 6 is a view similar to Figure 5, illustrating another modification of the first embodiment; Figure 7 is a perspective view illustrating a second embodiment of the non-contact dust removal device of the present invention; and Figure 8 is an incomplete cross-sectional view of the second embodiment.

1: Conveyor

11: surface

2: negative pressure box

21: negative pressure body

221: Block Door

23: negative pressure space

231: open

3: Dust removal box

313: Inhalation Channel

32: body

321: exhaust frame

322: Diversion duct

323: slot

324: guide plate

33: Nozzle

331: Jet Port

31: Dust removal space

311: suction chamber

312: Airflow Chamber

36: Static Eliminator

X: Conveying direction

Z: Top and bottom direction

Claims (10)

A non-contact dust removal device suitable for being installed on a surface and used to remove dust on the outer surface of an object to be dusted. The non-contact dust removal device comprises: a negative pressure body, which is arranged on the surface and cooperates with the surface to define A negative pressure space is provided for the object to be removed; and a dust removal box is connected to the negative pressure body and includes a body surrounding and defining a dust removal space, at least one located in the dust removal space and used for A nozzle that blows gas toward the object to be dusted, an air supply pipe connected to the nozzle and used to enter the nozzle, at least one exhaust pipe connected to the dust removal space and used to discharge gas and dust, and At least one static eliminator located in the dust removal space and used to eliminate static electricity, the dust removal space is connected to the negative pressure space, and the air pressure of the dust removal space and the negative pressure space is less than the outside air pressure. The non-contact dust removal device according to claim 1, further comprising a conveying table arranged on the bottom side of the negative pressure box along a top and bottom direction, and a negative pressure box including the negative pressure body, the conveying table forming There is the surface and used to move the dust-removed object into the negative pressure space of the negative pressure box along a conveying direction, the conveying direction is substantially perpendicular to the top and bottom direction, and the negative pressure space has two directions in the conveying direction. The negative pressure box also includes two blocking members respectively used to shield the openings. The non-contact dust removal device according to claim 2, wherein each stop has a stop door pivotally connected to the negative pressure body, and a cylinder for pushing the stop door, and each stop door can be opened The ground covers the respective openings. The non-contact dust removal device according to claim 2, wherein the conveyor table includes It includes a base, a conveyor belt rotatably arranged on the base along the conveying direction, and a driver for driving the conveyor belt to rotate. The non-contact dust removal device according to claim 1, wherein the dust removal box is arranged on the top side of the negative pressure box along a top and bottom direction, and the dust removal space is divided into a space located above the nozzle and connected to the exhaust The suction chamber of the air duct, an air flow chamber located below the nozzle, and two suction passages connected to the suction chamber and the air flow chamber. The suction passages are spaced and opposed in a conveying direction and are located respectively On both sides of the nozzle, the conveying direction is substantially perpendicular to the top and bottom direction. The non-contact dust removal device according to claim 5, wherein the body of the dust removal box has an exhaust frame, and two guide air ducts connected to two opposite sides of the exhaust frame in the conveying direction, The exhaust frame surrounds and defines the suction chamber, and has two slots that are opposed to each other in the conveying direction and communicate with the suction chamber. Each slot extends in a left-to-right direction. The pipes are respectively communicated with the slots and respectively define the suction channels, and the conveying direction, the top and bottom direction, and the left and right directions are substantially perpendicular to each other. The non-contact dust removal device according to claim 6, wherein the exhaust air duct is arranged on one side of the main body along the left and right direction. The non-contact dust removal device according to claim 6, wherein the exhaust air pipe is disposed on the top side of the body, and the exhaust frame further has at least one exhaust air pipe on the top side and connected to the exhaust air pipe. hole. The non-contact dust removal device according to claim 6, wherein each guide air duct has two guide plates that are arranged at intervals and extend outward and then downward. The plate surrounds the corresponding suction channel. The non-contact dust removal device according to claim 2, wherein each block is a brush or a blind, and each blind has a plurality of flexible baffles extending along the top and bottom directions.

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