Dustproof drying equipment

Abstract

The utility model discloses dustproof drying equipment which comprises a box body, an object carrying device used for placing objects is arranged in the box body, a dust collection tray is arranged below the object carrying device and comprises a tray frame, a plurality of parallel dust guide strips are arranged in the tray frame, and a dust collection gap is formed between every two adjacent dust guide strips in a spaced mode. The width of the dust guide strip is gradually increased from top to bottom to form two symmetrical dust guide inclined faces, the dust guide inclined faces incline towards the dust collection gap, and the box body is provided with a first air outlet located above the carrying device and a suction opening located below the dust collection tray. The first air outlet blows air downwards to dry objects on the object carrying device, meanwhile, the first air outlet blows air downwards to blow particle foreign matter in the box body to the dust collection tray, and due to the fact that the dust guide inclined face inclines towards the dust collection gap, the particle foreign matter can be separated from the dust collection gap under the action of the gravity of the particle foreign matter and the blowing action of the first air outlet. Foreign particles fall into the dust collection gaps along the dust guide slopes, the falling speed of the foreign particles into the dust collection gaps is increased, and the foreign particles are prevented from being accumulated on the dust guide slopes.

Description

Technical Field

[0001] The utility model relates to the field of drying equipment, in particular to dust-proof drying equipment. Background Art

[0002] In the production process of printed circuit boards, the step of drying the circuit boards is usually included. Existing drying equipment usually uses a conveyor to convey the circuit boards to a relatively closed box, and then uses a fan to blow air to dry the circuit boards. During this process, foreign particles in the box are lifted up and attached to the circuit boards, causing defects in the circuit boards. In order to avoid the above situation, the drying equipment usually has a collection box and a dust collection tray for foreign particles in the box under the conveyor.

[0003] For example, the Chinese patent with the announcement number CN213578604U discloses a drying device for the production of electronic components that is convenient for continuous drying, including a conveying mechanism, a drying mechanism located above the conveying mechanism, and a collection box located below the conveying mechanism, and the drying mechanism includes a fan for blowing air to the electronic components. The above drying device has the following problem: when the drying mechanism is in operation, the fan will blow air to raise the dust in the reaction box, and it cannot be guaranteed that all the dust falls into the collection box.

[0004] In view of this, the utility model proposes a dustproof drying device to solve the above problem. Utility Model Content

[0005] The utility model overcomes the shortcomings of the above-mentioned technology and provides a dust-proof drying device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A dust-proof drying device comprises a box body, wherein a loading device for placing articles is provided in the box body, a dust collecting tray is provided below the loading device, the dust collecting tray comprises a tray frame, a plurality of dust guide strips parallel to each other are provided in the tray frame, two dust guide strips are spaced apart to form a dust collecting gap, the dust guide strips gradually increase in width from top to bottom to form two symmetrical dust guiding slopes, the dust guiding slopes are inclined toward the dust collecting gap, the box body is provided with a first air outlet located above the loading device and an air exhaust port located below the dust collecting tray; the first air outlet is used to blow air to the articles in the loading device, and the air exhaust port is used to extract air from below the dust collecting tray.

[0008] Preferably, the dust guide strip comprises a triangular strip, a square strip formed by vertically extending downward from the bottom of the triangular strip, two side surfaces of the triangular strip are dust guide slopes, and the cross-section of the dust collecting gap is a funnel shape.

[0009] Preferably, the height of the triangular strips is greater than the height of the square strips.

[0010] Preferably, the object carrying device is a roller conveyor device and penetrates the entire box body along the length direction of the box body.

[0011] Preferably, a second air outlet for blowing air to the articles is provided below the roller conveyor device, and the second air outlet is staggered with the first air outlet in the vertical direction.

[0012] Preferably, the dust-proof drying equipment further comprises a fan with a filter element, wherein the fan with a filter element extracts the gas below the dust collecting tray through an exhaust port, and circulates the gas to the first air outlet and the second air outlet after filtering the gas.

[0013] Preferably, at least two first air outlets are evenly arranged above the roller conveyor along the length direction of the box body, and at least two second air outlets are evenly arranged below the roller conveyor along the length direction of the box body.

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

[0015] 1. The first air outlet of the utility model blows air downward to dry the items on the loading device. At the same time, the first air outlet blows air downward to blow the foreign particles in the box to the dust collecting tray. Since the dust guiding slope is inclined toward the dust collecting gap, it is conducive to the foreign particles falling into the dust collecting gap along the dust guiding slope, avoiding the accumulation of foreign particles on the dust guiding slope. Then, the air under the dust collecting tray is extracted through the exhaust port to take away the foreign particles in the box, avoiding the foreign particles from contaminating the items. Moreover, the dust guiding slope can prevent the air under the dust collecting tray from flowing back, further separating the foreign particles from the items on the loading device. The dust guiding slope cooperates with the downward blowing of the first air outlet to increase the rate at which foreign particles fall into the dust collecting gap, and at the same time avoid the situation where the dust guiding slope and the downward blowing of the first air outlet are directly opposite, causing the particles to be lifted up.

[0016] 2. The dust guide strip includes a triangular strip, the two side surfaces of the triangular strip are dust guide slopes, and the bottom of the triangular strip extends vertically downward to form a square strip, so that the cross-section of the dust collecting gap is funnel-shaped, and the dust guide slope and the side of the square strip form an angle structure, which is conducive to the separation of particle foreign matter from the dust guide slope.

[0017] 3. A first air outlet is provided above the roller conveyor device, and a second air outlet is provided below the roller conveyor device. Cooperating with the conveyor of the roller conveyor device, both the top and bottom of the object can be dried. Moreover, the second air outlet is staggered with the first air outlet in the vertical direction, which does not affect the first air outlet from blowing particulate foreign matter to the dust collection tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the gas flow inside the box of a dustproof drying device of the utility model;

[0019] Figure 2It is a cross-sectional view of the dust collection tray of the utility model;

[0020] Figure 3 It is a cross-sectional view of the dust guide strip of the utility model;

[0021] Figure 4 is a cross-sectional view of a prior art pallet;

[0022] The implementation, functional features and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following examples further illustrate the features of the present invention and other related features to facilitate understanding by those skilled in the art:

[0024] Reference Figure 1-3 , an embodiment of a dustproof drying device of the utility model is proposed:

[0025] A dust-proof drying device comprises a box body 1, a loading device for placing articles is arranged in the box body 1, a dust collecting tray 2 is arranged below the loading device, the dust collecting tray 2 comprises a tray frame 21, a plurality of dust guide strips 22 parallel to each other are arranged in the tray frame 21, two dust guide strips 22 are spaced apart to form a dust collecting gap 23, the dust guide strips 22 gradually increase in width from top to bottom to form two symmetrical dust guide slopes 221, the dust guide slopes 221 are inclined toward the dust collecting gap 23, the box body 1 is provided with a first air outlet 11 located above the loading device and an air exhaust port 13 located below the dust collecting tray 2.

[0026] like Figure 1 As shown, the arrow indicates the direction of gas flow; the first air outlet 11 blows air downward to dry the items on the loading device, and at the same time, the first air outlet 11 blows air downward to blow the foreign particles in the box body 1 to the dust collecting tray 2. Since the dust guiding slope 221 is inclined toward the dust collecting gap 23, and the foreign particles fall into the dust collecting gap 23 along the dust guiding slope 221 by utilizing the gravity of the foreign particles themselves and the blowing effect of the first air outlet 11, the foreign particles are increased in speed to fall into the dust collecting gap 23, and the foreign particles are prevented from accumulating on the dust guiding slope 221; the air below the dust collecting tray 2 is then extracted through the exhaust port 13, and the foreign particles in the box body 1 are taken away, and the foreign particles are prevented from contaminating the items. Moreover, the dust guiding slope 221 can prevent the air below the dust collecting tray 2 from flowing back, and further separate the foreign particles from the items on the loading device.

[0027] like Figure 4As shown, the existing tray 4 has a bottom of a horizontal plane 41, and a plurality of through holes 42 are provided on the bottom of the tray for particles and foreign objects to pass through. Compared with the existing tray 4, the first air outlet 11 of the utility model blows air directly against the horizontal plane 42, which will cause the blowing of the first air outlet 11 to be blocked, resulting in a change in wind direction, and the particles in the tray 4 are lifted up, which is not conducive to the separation of objects and particles. However, the dust guide slope 221 of the utility model is not perpendicular to the blowing of the first air outlet 11, which can avoid the above-mentioned particle lifting.

[0028] like Figure 2 As shown, the dust guide strip 22 includes a triangular strip 222 and a square strip 223 formed by vertically extending downward from the bottom of the triangular strip 222, and the height of the triangular strip 222 is greater than the height of the square strip 223. The two side surfaces of the triangular strip 222 are dust guide slopes 221, so that the cross section of the dust collecting gap 23 is funnel-shaped, and the dust guide slope 221 and the side surface of the square strip 223 form an angled structure, which is conducive to the separation of particle foreign matter from the dust guide slope 221.

[0029] like Figure 1 As shown, the loading device is a roller conveyor 3, and runs through the entire box body 1 along the length direction of the box body 1. At least two first air outlets 11 are evenly arranged above the roller conveyor 3 along the length direction of the box body 1. At least two second air outlets 12 are evenly arranged below the roller conveyor 3 along the length direction of the box body 1, and the second air outlets 12 blow air upward to dry the items. The first air outlet 11 and the second air outlet 12 cooperate with the conveying items of the roller conveyor 3, so that the upper and lower sides of the objects can be dried. Moreover, the second air outlet 12 is staggered with the first air outlet 11 in the vertical direction, which does not affect the first air outlet 11 from blowing particulate foreign matter to the dust collection tray 2.

[0030] Specifically, the dust-proof drying equipment also includes a fan 5 with a filter element, which extracts the gas under the dust collecting tray 2 through the exhaust port 13, and circulates the filtered gas to the first air outlet 11 and the second air outlet 12 to realize air circulation of the box 1.

[0031] In this embodiment, two opposite inner walls of the box body 1 are provided with crossbeams for supporting the tray frame 21, and the tray frame 21 is placed on the crossbeam 14, so that the dust collection tray 2 is detachably connected to the box body 1, and the dust collection tray 2 is easy to remove and clean. The utility model is used for drying circuit boards and can also be used for drying other items.

[0032] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A dust-proof drying device, characterized in that: The invention comprises a box body (1), wherein a loading device for placing articles is arranged inside the box body (1), a dust collecting tray (2) is arranged below the loading device, the dust collecting tray (2) comprises a tray frame (21), a plurality of dust guiding strips (22) parallel to each other are arranged inside the tray frame (21), two dust guiding strips (22) are spaced apart to form a dust collecting gap (23), the width of the dust guiding strips (22) gradually increases from top to bottom to form two symmetrical dust guiding inclined surfaces (221), the dust guiding inclined surfaces (221) are inclined toward the dust collecting gap (23), the box body (1) is provided with a first air outlet (11) located above the loading device and an air exhaust port (13) located below the dust collecting tray (2); the first air outlet (11) is used to blow air to the articles in the loading device, and the air exhaust port (13) is used to extract air from below the dust collecting tray (2).

2. A dustproof drying device according to claim 1, characterized in that: The dust guide strip (22) comprises a triangular strip (222) and a square strip (223) formed by vertically extending downward from the bottom of the triangular strip (222); two side surfaces of the triangular strip (222) are dust guide inclined surfaces (221); and the cross section of the dust collecting gap (23) is in the shape of a funnel.

3. A dustproof drying device according to claim 2, characterized in that: The height of the triangular strip (222) is greater than the height of the square strip (223).

4. The dustproof drying device according to claim 1, characterized in that: The object carrying device is a roller conveying device (3) and runs through the entire box body (1) along the length direction of the box body (1).

5. The dustproof drying device according to claim 4, characterized in that: A second air outlet (12) for blowing air to the objects is provided below the roller conveyor (3); the second air outlet (12) is staggered with the first air outlet (11) in the vertical direction.

6. The dustproof drying device according to claim 5, characterized in that: It comprises a fan with a filter element (5), wherein the fan with a filter element (5) extracts gas from below the dust collecting tray (2) through an air suction port (13), filters the gas and circulates it to a first air outlet (11) and a second air outlet (12).

7. The dustproof drying device according to claim 5, characterized in that: At least two first air outlets (11) are evenly arranged above the roller conveyor (3) along the length direction of the box body (1), and at least two second air outlets (12) are evenly arranged below the roller conveyor (3) along the length direction of the box body (1).

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