Movable cutting machine smoke dust collecting device

Abstract

The utility model provides a movable cutting machine smoke dust collecting device. The movable cutting machine smoke dust collecting device comprises a dust suction cover with walking trundles, a sliding air pipe with an opening in the upper side, a sliding air suction assembly sliding on the sliding air pipe and communicated with the opening side of the sliding air pipe, and a dust suction pipe communicated with the dust suction cover and the sliding air suction assembly. The sliding air suction assembly comprises an air suction cover connected to the sliding air pipe in a sliding mode and a sealing belt which is arranged on an opening of the sliding air pipe in a sealing mode and located between the sliding air pipe and the air suction cover. Four compression rollers are coupled in the air suction cover, and the sealing belt bypasses the compression rollers and is designed in a shape like a Chinese character'ji '; the air suction cover is designed to be in an inverted trapezoid shape, and the inclined face of the air suction cover is a flow guide plate used for guiding air into the sliding air pipe. One end of the sliding air pipe communicates with the dedusting device. Air is guided into the sliding air pipe through the guide plate of the air suction cover, so that a side suction type air duct is formed, the resistance of airflow entering the sliding air pipe is reduced, the smoke dust collecting efficiency is improved, the power of a dust removal fan is reduced, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the field of dust removal and air purification, in particular to a mobile smoke collecting device for a cutting machine. Background Art

[0002] Current status of dust control in mobile plasma steel plate cutting machines and mobile flame steel plate cutting machines in the industrial field:

[0003] At present, the collection of cutting smoke from plasma steel plate cutting machines and flame steel plate cutting machines is mostly done by ① blowing and suction collection method ② side suction collection method ③ damper collection method ④ wet collection method.

[0004] Blowing and suction collection

[0005] This dust removal method is to place a sliding air duct on one side of the cutting platform of the cutting machine, on which is an air suction port that can move with the cutting machine. The sliding air duct is covered with a sealing belt, and the movable air suction port is connected to the sliding air duct. On the other side of the cutting platform, there is an air blowing port with an axial flow fan. The air blowing port and the air suction port are fixed on the cutting machine at the same time and keep a straight line with the cutting head. Using the air duct formed by the cutting platform grid plate and the steel plate covering it, the smoke and dust enter the air suction port along the grid space, and then enter the sliding air duct and dust collector from the air suction port, and are discharged after filtration and purification.

[0006] Side suction collection

[0007] This dust removal method is to place a sliding air duct on each side of the cutting platform, and set an air suction port on each side that can move with the cutting machine. The sliding air duct is covered with a sealing belt, and the movable air suction port is connected to the sliding air duct. The air duct is formed by the grid plate of the cutting platform and the steel plate covering it. After the system is turned on, the smoke and dust enter the air suction port along the grid space, and then enter the air duct and dust collector from the air suction port, and are discharged after filtration and purification.

[0008] Disadvantages and shortcomings of blowing and suction collection and treatment and side suction collection and treatment:

[0009] (1) Since it is a side suction dust collector, it mainly collects the smoke dust in the grid plate of the cutting area, that is, the smoke dust below the workpiece steel plate. The smoke dust above the workpiece steel plate and the smoke dust outside the suction port cannot be collected, the smoke escapes seriously, and the treatment effect is poor. Most of this type of smoke dust collection equipment is abandoned after 1-2 years of use, resulting in a waste of investment.

[0010] (2) The dust removal effect depends on the coverage rate of the steel plates on the cutting platform. When the steel plates on the cutting platform cannot be fully covered or the gaps between the steel plates are large, smoke and dust will escape in large quantities from both sides or the gaps, greatly reducing the capture efficiency.

[0011] (3) Side suction is a downward suction type. The larger waste particles produced during steel plate cutting will be brought into the air duct, which is prone to blockage and jamming. At the same time, the service life of the dust collector filter will be greatly shortened.

[0012] (4) It does not involve the control of arc radiation and noise pollution.

[0013] (5) Limited by the size of the cutting platform: The blowing and suction dust removal method is only applicable to cutting platforms with a width of less than 4.5m. The larger the width, the worse the effect.

[0014] Damper Collection

[0015] The cutting platform is divided into multiple spaces of equal width along the length direction, and each space is equipped with a damper, damper control mechanism (cylinder), ash hopper, and induction switch. When the cutting machine approaches the induction switch, the cylinder piston rod drives the damper to open, and the smoke and dust in the space enters the air duct from the damper, and then enters the air purification device from the air duct, and is discharged after being treated and purified.

[0016] Disadvantages and shortcomings of damper type collection

[0017] (1) There are many dampers, cylinders, and sensor components, many failure points, and inconvenient maintenance;

[0018] (2) The damper is easily not closed tightly due to the influence of iron slag and other debris, resulting in serious air leakage, and cleaning is time-consuming and laborious;

[0019] (4) Under the same track gauge, compared with the blowing and suction type and side suction type dust removal systems, the effective use area of ​​the cutting platform increases, but the air extraction volume and energy consumption also increase relatively;

[0020] (5) It does not involve the control of arc radiation and noise pollution;

[0021] (6) It mainly collects the smoke inside the grid plate in the cutting area, that is, the smoke below the cutting steel plate. The smoke above and the smoke outside the suction port cannot be collected.

[0022] Wet collection method

[0023] The wet treatment method is to add a water bed to the cutting platform of the plasma cutting machine, put the workpiece into the water during cutting, and cut it completely underwater. The harmful substances generated during cutting are captured by water, which can reduce ultraviolet radiation and noise. This treatment method has a small initial investment and is not widely used at present. It mainly has the following disadvantages and shortcomings:

[0024] (1) It causes water pollution and forms wastewater. The treatment of wastewater will inevitably increase production costs;

[0025] (2) In the cold winter, the northern regions are prone to ice formation, which affects the production of enterprises;

[0026] (3) Cutting speed is 10% slower than dry cutting;

[0027] (4) Underwater cutting is not conducive to observing the cutting torch and incision conditions, and cutting abnormalities are prone to occur;

[0028] (5) The wet collection method is not suitable for cutting metals such as aluminum and magnesium;

[0029] (6) After the pre-treated steel plate is cut underwater, the cut will rust again.

[0030] Therefore, the utility model needs to solve the problems of mobile plasma steel plate cutting machines and flame steel plate cutting machines in the heavy industry field, such as low cutting smoke capture rate and large transmission resistance after collection due to their mobile operation. Utility Model Content

[0031] The utility model discloses a mobile smoke and dust collecting device for a cutting machine, which is used to solve relevant technical problems in the background technology.

[0032] The technical solution provided by the utility model is as follows: a mobile cutting machine smoke collection device, comprising: a dust hood with walking casters, a sliding air duct with an upper opening, a sliding air suction component sliding on the sliding air duct and connected to the open side of the sliding air duct, and a dust suction pipe connecting the dust hood and the sliding air suction component;

[0033] The sliding air suction assembly comprises: an air suction hood slidably connected to the sliding air duct, and a sealing belt sealed on the opening of the sliding air duct and between the sliding air duct and the air suction hood; four pressure rollers are connected to the inner shaft of the air suction hood, and the sealing belt is designed to be "J"-shaped around the pressure rollers; the air suction hood is designed in an inverted trapezoidal shape, and its inclined surface is a guide plate for guiding air into the sliding air duct;

[0034] One end of the sliding air duct is connected to the dust removal device.

[0035] In one embodiment, the dust hood is composed of a polycarbonate plate and a metal bracket.

[0036] In one embodiment, an observation window and a sliding door are provided on the dust hood.

[0037] In one embodiment, a negative pressure chamber is separated from the top of the dust hood by a mesh plate, a rectangular air duct connected to the dust suction pipe is provided in the negative pressure chamber, and a dust suction port is opened on the side of the rectangular air duct.

[0038] In one embodiment, the rectangular air duct and the dust suction duct are connected via an air duct elbow.

[0039] In one embodiment, an electric valve is provided between the dust suction pipe and the sliding air suction assembly.

[0040] In one embodiment, slide rails are respectively provided on both sides of the sliding air duct, and the air suction cover is slidably connected to the slide rails via sliders.

[0041] In one embodiment, the sliding air duct is of a bridge type or a sunken type.

[0042] Compared with the prior art, the beneficial effects of the utility model are:

[0043] (1) The utility model discloses a mobile cutting machine smoke collection device, wherein the air suction hood is designed as an inverted trapezoid, and the air is guided into the sliding air duct through its inclined guide plate, thereby forming a side suction air duct, reducing the resistance of the air flow entering the sliding air duct, improving the efficiency of smoke collection, reducing the power of the dust removal fan, and saving energy.

[0044] (2) The utility model relates to a mobile cutting machine smoke collection device, which separates the top of the dust hood into a negative pressure chamber by a mesh plate. The negative pressure chamber can achieve uniform air suction at each point on the mesh plate inside the hood, thereby solving the problem that smoke cannot be discharged from some areas of the hood due to uneven upper suction force. Therefore, when the smoke rises due to its own lift, the negative pressure chamber provides uniform upward suction, which can improve the efficiency of smoke capture, achieve the ideal effect with a smaller air volume, and save energy.

[0045] (3) The mobile smoke collection device for a cutting machine of the utility model is provided with a dust hood with walking casters and a sliding air suction assembly. When the dust hood moves synchronously with the cutting machine, it can ensure that the device can achieve the beneficial effects of smoke capture and transportation in a mobile state, thereby solving the problem that smoke cannot be captured and transported due to mobile operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the structure of an embodiment of the smoke and dust collecting device of the utility model;

[0047] Figure 2 This is a schematic diagram of the structure of another embodiment of the smoke and dust collecting device of the utility model;

[0048] Figure 3 It is a partial enlarged view of the smoke and dust collecting device of the utility model;

[0049] Figure 4 It is a cross-sectional view of the dust hood in the utility model;

[0050] Figure 5 This is a schematic diagram of the external structure of the sliding air suction component in the utility model;

[0051] Figure 6 It is a schematic diagram of the internal structure of the sliding air suction component in the utility model.

[0052] The accompanying drawings are marked as follows: 1. Dust hood; 11. Observation window; 12. Sliding door; 2. Sliding air duct; 21. Sliding rail; 3. Sliding air suction assembly; 31. Air suction hood; 32. Sealing belt; 33. Pressure roller; 34. Guide plate; 35. Sliding block; 4. Dust suction pipe; 5. Mesh plate; 6. Negative pressure chamber; 7. Rectangular air duct; 71. Dust suction port; 8. Air duct elbow; 9. Electric valve. DETAILED DESCRIPTION

[0053] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0054] Example 1

[0055] like Figure 1-6 As shown, the utility model is a mobile smoke collection device for a cutting machine, comprising: a dust hood 1, a sliding air duct 2, a sliding air suction component 3, a dust suction pipe 4 and a dust removal device. The dust hood 1 is a hood-shaped structure with an opening at the bottom, which is covered on a mobile cutting machine, and the bottom of the dust hood 1 is provided with walking casters, which can move synchronously with the cutting machine; the sliding air duct 2 is a U-shaped structure with an opening at the top, one end of which is connected to the dust removal device, the sliding air suction component 3 is slidably connected to the sliding air duct 2, and the top opening of the sliding air duct 2 is sealed, the other side of the sliding air suction component 3 is connected to the dust hood 1, and the suction port is on the side of the top of the dust hood 1, forming an upward suction structure, which conforms to the law of natural rise of smoke and dust, and can achieve the ideal effect with a smaller fan air volume, saving energy; when the dust removal device starts to work, the dust hood 1 is in a negative pressure state, and the cutting smoke enters the sliding air suction component 3 through the dust suction pipe 4 due to its own lift and the suction force of the wind, enters the sliding air duct 2 from the sliding air suction component 3, and then enters the dust collector from the sliding air duct 2, and is discharged after filtration and purification. By providing the dust hood 1 with walking casters and the sliding air suction assembly 3, when the dust hood 1 moves synchronously with the cutting machine, it can be ensured that the device can achieve the beneficial effects of smoke and dust capture and transportation in the mobile state, solving the problem of being unable to capture and transport due to mobile operations. Specifically:

[0056] The dust hood 1 is made of galvanized steel pipe or aluminum alloy as a frame and polycarbonate plate as a enclosure to form a hood-shaped structure with an opening at the bottom. The polycarbonate plate has high strength and light weight, and achieves the effects of sound insulation, noise reduction, and arc ultraviolet blocking.

[0057] like Figure 5-6As shown, the sliding air suction assembly 3 includes: an air suction hood 31, a sealing belt 32 and a pressure roller 33; the sliding air duct 2 is respectively provided with slide rails 21 on both sides, the air suction hood 31 is slidably connected to the slide rails 21 through a slider 35, and the sealing belt 32 is sealed on the opening of the sliding air duct 2; specifically, the air suction hood 31 is connected to four pressure rollers 33 in the inner shaft, two pressure rollers 33 are provided on the upper side, and two pressure rollers 33 are provided on the lower side, and the sealing belt 32 is designed in a "J" shape by passing through each pressure roller 33, and the two pressure rollers 33 on the lower side make the sealing belt 32 outside the air suction hood 31 seal on the sliding air duct 2, and the two pressure rollers 33 on the upper side make the air suction hood 3 1 is away from the sliding air duct 2, so that the air suction hood 31 is connected with the sliding air duct 2; wherein, the air suction hood 31 is designed in an inverted trapezoidal shape, and its inclined surface is a guide plate 34, which is used to guide air into the sliding air duct 2; when the dust removal device starts to work, smoke and dust enter the air suction hood 31 with the negative pressure airflow, and are guided into the sliding air duct 2 through the inclined surface of the air suction hood 31; when the air suction hood 31 moves, the sealing belt 32 is driven by the pressure roller 33, and always maintains the "J" shape design, thereby ensuring the connection between the air suction hood 31 and the sliding air duct 2, and the sealing of other positions of the sliding air duct 2 is still ensured by the sealing belt 32. The air suction hood 31 is designed in an inverted trapezoidal shape, and through its guide plate 34, the air is guided into the sliding air duct 2, forming a side suction air duct, reducing the resistance of the airflow entering the sliding air duct 2, improving the efficiency of smoke and dust collection, reducing the power of the dust removal fan, and saving energy.

[0058] The dust hood 1 of this embodiment is provided with an observation window 11 and a sliding door 12; sliding doors 12 are respectively provided on the front and rear sides of the dust hood 1 for easy operation and maintenance; an observation window 11 is provided on the side of the cutting machine operating table for the operator to observe the working status of the cutting machine.

[0059] In this embodiment, an electric valve 9 is provided between the dust suction pipe 4 and the sliding air suction assembly 3. When the dust suction work starts, the electric valve 9 is opened, and the smoke passes through the dust suction pipe 4, the electric valve 9, and the sliding air suction assembly, and then enters the dust collector through the sliding air duct 2, and is discharged after filtering and purification.

[0060] like Figure 1 As shown, the sliding air duct 2 is a sinking type; Figure 2 As shown, the sliding air duct 2 is of a bridge type; these two structures can be selected according to the actual situation on site.

[0061] Example 2

[0062] This embodiment 2 is completed on the basis of embodiment 1, as shown in Figure 4 As shown, a negative pressure bin 6 structure is added to the top of Example 1, and the cutting smoke quickly enters the negative pressure bin 6 due to its own lift and suction, thereby realizing the rapid and effective capture of the smoke. Specifically:

[0063] The top of the dust hood 1 is separated into a negative pressure bin 6 by a mesh plate 5. A rectangular air duct 7 connected to the dust suction pipe 4 is provided in the negative pressure bin 6. A dust suction port 71 is provided on the side of the rectangular air duct 7. The rectangular air duct 7 is connected to the dust suction pipe 4 through an air duct elbow 8. The negative pressure bin 6 can achieve uniform air suction at each point of the mesh plate in the hood, solving the problem that smoke and dust cannot be discharged in some areas of the hood due to uneven upper suction force. Therefore, when smoke and dust rise due to their own lift, the negative pressure bin 6 provides uniform upward suction, which can improve the efficiency of smoke and dust capture, and achieve the ideal effect with a smaller air volume, saving energy.

[0064] Working principle: When the cutting work starts, the dust hood 1 moves synchronously with the cutting machine, and the dust removal device starts to work. The dust hood 1 quickly forms a negative pressure state due to the negative pressure chamber 6. The cutting smoke enters the wind suction hood 31 through the rectangular air duct 7, the air duct elbow 8, the dust suction pipe 4, and the electric valve 9 due to its own lift and the suction force of the wind. It is guided to the sliding air duct 2 by the guide plate 34, and then enters the dust collector from the sliding air duct 2, and is discharged after filtering and purification.

[0065] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0066] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mobile cutting machine smoke collection device, characterized in that: include: A dust hood (1) having walking casters, a sliding air duct (2) with an opening on the upper side, a sliding air suction component (3) sliding on the sliding air duct (2) and connected to the open side of the sliding air duct (2), and a dust suction pipe (4) connecting the dust hood (1) and the sliding air suction component (3); The sliding air suction assembly (3) comprises: an air suction hood (31) slidably connected to the sliding air duct (2), and a sealing belt (32) sealing on the opening of the sliding air duct (2) and between the sliding air duct (2) and the air suction hood (31); four pressure rollers (33) are axially connected to the inner shaft of the air suction hood (31), and the sealing belt (32) bypasses the pressure rollers (33) to form a "J" shape; the air suction hood (31) is designed in an inverted trapezoidal shape, and its inclined surface is a guide plate (34) used to guide air into the sliding air duct (2); One end of the sliding air duct (2) is connected to a dust removal device.

2. A mobile cutting machine smoke collection device as claimed in claim 1, characterized in that: The dust hood (1) is composed of a polycarbonate plate and a metal bracket.

3. A mobile cutting machine smoke collection device as claimed in claim 1, characterized in that: The dust hood (1) is provided with an observation window (11) and a sliding door (12).

4. A mobile cutting machine smoke collection device as claimed in claim 1, characterized in that: A negative pressure chamber (6) is separated at the top of the dust hood (1) by a mesh plate (5), and a rectangular air duct (7) connected to the dust suction pipe (4) is provided in the negative pressure chamber (6), and a dust suction port (71) is provided on the side of the rectangular air duct (7).

5. A mobile cutting machine smoke collection device as claimed in claim 4, characterized in that: The rectangular air duct (7) is connected to the dust suction pipe (4) via an air duct elbow (8).

6. A mobile cutting machine smoke collection device as claimed in claim 1, characterized in that: An electric valve (9) is provided between the dust suction pipe (4) and the sliding air suction assembly (3).

7. A mobile cutting machine smoke collection device as claimed in claim 1, characterized in that: Sliding rails (21) are respectively provided on both sides of the sliding air duct (2), and the air suction cover (31) is slidably connected to the sliding rails (21) via a sliding block (35).

8. A mobile fume collection device for a cutting machine as claimed in claim 1, characterized in that: The sliding air duct (2) is of a bridge type or a sunken type.

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