Telescopic dust hood

Abstract

The dust collection cover comprises an outer cover, a first dust collection opening and a first opening and closing door are formed in the side, close to a production line, of the outer cover; the cross section of the telescopic cover body is in a right triangle shape, the telescopic cover body is telescopically nested in the outer cover in the length direction of the production line, a second dust collection opening and a second opening and closing door are formed in the side, close to the production line, of the telescopic cover body, and the upper side edge of the second opening and closing door is rotationally connected with the upper end of the second dust collection opening; the telescopic cover body extends out of the outer cover, and the first opening and closing door and the second opening and closing door form a dust collection channel in an opening state; when the telescopic cover body retracts the outer cover, the first opening and closing door and the second opening and closing door are in a closed state, and the dust collection channel is closed. According to the dust collection cover, the form of the telescopic cover body is adopted, the dust collection cover can be lengthened in the length direction of the production line to form a larger dust collection channel, the telescopic cover body can be stored in the main cover body after being retracted into the outer cover and closed, and the dust collection cover can extend the dust collection range in the length direction of the production line and is small in occupied space.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial dust removal, and specifically relates to a telescopic dust hood. Background Art

[0002] In the process of modernization, environmental protection requirements for the industrial field are constantly increasing, and the organized emission of smoke and dust in factories is an important part of it. During the operation of metal rolling lines, the high temperature and speed of the rolled pieces cause a large amount of dust in the surrounding environment, which has a great impact on the occupational health of workers and the surrounding environment. Therefore, it needs to be purified before being discharged.

[0003] In the process of smoke emission treatment, the production line dust hood is generally used to collect the smoke generated in the production line, and then carry out subsequent filtration and purification. At present, the dust hood is generally placed directly above the production line, and the lower opening is mostly rectangular in shape. The part of the dust hood near the branch duct is in the shape of an inverted funnel, so as to absorb as much smoke generated in the production line as possible to avoid affecting the surrounding production environment.

[0004] However, in order to reduce the occupied space as much as possible, the current vacuum hood cannot expand the vacuum range in the length direction of the production line, which greatly limits the vacuum effect.

[0005] Moreover, when the main rolling line of the production line fails, the main rolling line failure usually manifests as steel piles, and the rolled products (steel) arch or burst out from the gap between the equipment. The dust hood placed directly above the production line, because it fully covers the rolled products, is very likely to cause the rolled products to accumulate in the dust hood, which will not only damage the dust hood, but also affect the maintenance of the main rolling line.

[0006] Moreover, when the main rolling line needs to be overhauled, it is usually for specification change (equipment needs to be adjusted for different rolled steels) and maintenance. During maintenance, it is possible that only personnel are required to work without lifting, but a larger space will provide convenience for personnel to work. The dust hoods equipped with existing dust removal systems usually occupy a large space and are not easy to disassemble. Therefore, the dust hoods set directly above the production line will make it impossible to clear the space above the production line during maintenance, which will inevitably cause inconvenience to the main line maintenance.

[0007] Based on the above problems, it is necessary to improve the existing dust hood. Utility Model Content

[0008] In view of the above problems, the purpose of the utility model is to provide a retractable dust hood to solve the problems that the existing dust hood occupies a large space but cannot expand the dust collection range in the length direction of the production line, is difficult to disassemble, and is not conducive to main line inspection and maintenance.

[0009] The technical solutions adopted are as follows:

[0010] A dust hood, comprising:

[0011] An outer cover, wherein the cross section of the outer cover is a right triangle; and a first dust suction opening is opened on a side of the outer cover close to the production line, a first opening and closing door is arranged on the first dust suction opening, and an upper side edge of the first opening and closing door is rotatably connected to an upper end of the first dust suction opening;

[0012] A telescopic cover body, the cross section of which is a right triangle, which is telescopically nested in the outer cover along the length direction of the production line, a second dust suction opening is opened on the side of the telescopic cover body close to the production line, a second opening and closing door is arranged on the second dust suction opening, and the upper side of the second opening and closing door is rotatably connected to the upper end of the second dust suction opening;

[0013] The telescopic cover extends out of the outer cover, and the first opening and closing door and the second opening and closing door form a dust suction channel when they are in the open state; the telescopic cover retracts into the outer cover, and the first opening and closing door and the second opening and closing door close the dust suction channel when they are in the closed state.

[0014] Optionally, the upper side of the first opening and closing door is rotatably connected to the upper end of the first dust suction opening via a hinge;

[0015] The upper side edge of the second opening and closing door is rotatably connected to the upper end of the second dust suction opening via a hinge.

[0016] Optionally, the outer cover includes a first right-angle plate, a second right-angle plate and an inclined plate connected therebetween, the first right-angle plate and the second right-angle plate are connected at a right angle, the inclined plate and the first right-angle plate and the second right-angle plate form a cylindrical body with a right-angled triangle cross-section, one end of which is open and the other end is a right-angled triangle side wall, and the telescopic cover body can be telescopically nested in the open end of the outer cover.

[0017] Optionally, a first angle iron is provided on the first right-angle plate of the outer cover, the right-angled inner side of the first angle iron faces downward, and its two right-angled sides are connected to the first right-angled plate; a second angle iron is provided on the top surface of the telescopic cover body, and its two right-angled sides are connected to the top surface of the telescopic cover body; the first angle iron is stacked on the second angle iron, so that the first angle iron and the second angle iron can slide relative to each other, thereby controlling the telescopic cover body to slide out of the outer cover or retract into the outer cover.

[0018] Optionally, the dust hood is arranged above the production line side.

[0019] Optionally, the first opening and closing door and the second opening and closing door are both in an open state through respective supporting structures.

[0020] The supporting structure is a supporting rod, one end of which is supported on the opening and closing door, and the other end of which is supported on a plate surface opposite to the opening and closing door.

[0021] Optionally, the second right-angle plate of the outer cover is vertically arranged at the upper right side of the production line, and the first right-angle plate is fixedly connected to the dust collection duct.

[0022] Optionally, when the first opening and closing door is in the open state, the first opening and closing door forms an angle of 45 degrees with the plane where the first dust suction opening is located; when the second opening and closing door is in the open state, the second opening and closing door forms an angle of 45 degrees with the plane where the second dust suction opening is located.

[0023] Optionally, a handle is provided on a side of the first opening and closing door facing away from the dust suction opening.

[0024] Optionally, at least two support positioning points are provided on the first opening and closing door and the second opening and closing door, and the support structure adjusts the opening angle of the corresponding opening and closing door through the support positioning points of the corresponding opening and closing door.

[0025] The dust collection hood provided by the utility model has the following beneficial effects:

[0026] 1) The telescopic hood can be extended along the length of the production line to form a larger dust collection channel. After the telescopic hood is retracted into the outer cover and the door is closed, it can be stored in the main hood. The dust collection hood can not only extend the dust collection range in the length direction of the production line, but also occupy a small space.

[0027] (2) It greatly avoids the situation where the dust hood is damaged due to equipment failure, and frees up space for equipment inspection and maintenance, thereby improving the operating rate;

[0028] (3) During use, after the telescopic hood is extended, smoke and dust enter the dust hood from the left, bottom and right directions. Compared with the existing dust hoods with closed two sides, the dust collection efficiency is higher and the dust hood occupies less space under the same working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By describing the embodiments thereof in conjunction with the following drawings, the above-mentioned features and technical advantages of the present utility model will become clearer and easier to understand.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the outer cover according to an embodiment of the utility model;

[0031] Figure 2 It is a side view of a dust hood according to an embodiment of the utility model;

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure of the dust hood according to an embodiment of the utility model;

[0033] Description of reference numerals:

[0034] 1. Production line rolled product, 2. Fixed bridge, 3. Outer cover, 31. First dust suction opening, 32. First opening and closing door, 322. Hinge, 324. Handle, 33. Right-angled triangle side wall, 34. Inclined plate, 35. First right-angled plate, 352. Opening, 36. Second right-angled plate, 37. Support rod, 372. Rotatable support member, 374. Support positioning point, 4. Dust suction duct, 300. Telescopic cover, 301. Second dust suction opening, 302. Second opening and closing door. DETAILED DESCRIPTION

[0035] The embodiments of the present invention will be described below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that the described embodiments may be modified in various ways or combinations thereof without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims. In addition, in this specification, the drawings are not drawn to scale and the same reference numerals represent the same parts.

[0036] Figure 1 to Figure 2 The structure of the dust cover according to the embodiment of the utility model is shown from different angles. Specifically, Figure 1 It is a schematic diagram of the three-dimensional structure of the dust hood according to an embodiment of the utility model; Figure 2 It is a side view of a dust hood according to an embodiment of the utility model;

[0037] like Figure 1 to Figure 2 As shown, the dust hood provided by the utility model mainly includes an outer cover arranged at the lower end of the dust collection pipe, and a telescopic cover body that can be telescopically nested in the outer cover. The dust hood is used to be arranged above the production line side, and the cross-section of the outer cover and the telescopic cover body (perpendicular to the production line direction) is a right triangle. Figure 1 In the illustrated embodiment, 1 is a production line rolled piece, below the production line rolled piece is a fixed bridge 2, an outer cover 3 is arranged as a whole at the upper right of the production line, and above the outer cover 3 is a dust collection duct 4.

[0038] Figure 1 The outer cover in the illustrated embodiment has a right triangle cross section, one right-angle plate of the outer cover is vertically arranged at the upper right side of the production line, and the other right-angle plate is fixedly connected to the dust collection duct 4 .

[0039] A first dust suction opening 31 is provided on the side of the outer cover 3 close to the production line, and a first opening and closing door 32 is provided on the first dust suction opening 31, and the upper side of the first opening and closing door 32 is rotatably connected to the upper end of the first dust suction opening 31. When the first opening and closing door 32 is closed, the first opening and closing door 32 can close the first dust suction opening 31 by its own gravity; when the first opening and closing door 32 is open, it can be obliquely supported by a supporting structure directly above the production line, thereby opening the first dust suction opening 31, so that the dust suction hood generates negative pressure under the action of the dust removal system to absorb smoke and dust above the production line.

[0040] Moreover, the dust hood is retractable, including an outer cover 3 and a retractable cover body 300 arranged in the outer cover 3. The retractable cover body 300 can be extended along the length direction of the production line to expand its dust collection range.

[0041] Figure 1 In the dust hood, the outer cover 3 includes a first right-angle plate 35, a second right-angle plate 36 and an inclined plate 34 connected therebetween, the first right-angle plate 35 and the second right-angle plate 36 are connected at a right angle, the inclined plate 34 and the first right-angle plate 35 and the second right-angle plate 36 form a cylinder with a right-angled triangle cross-section, one end of which is open and the other end is a right-angled triangle side wall 33.

[0042] An opening 352 matching the lower end of the dust suction pipe 4 is provided on the first right angle plate 35; the lower end of the dust suction pipe 4 is connected to the outer cover through the opening 352, so that smoke and dust on the production line can be sucked through the dust suction cover during the production process.

[0043] The second right-angle plate 36 partially blocks the side of the dust hood facing the production line, and the lower end of the second right-angle plate 36 is rotatably connected to the upper end of the first opening and closing door. The upper side of the first opening and closing door 32 is rotatably connected to the lower side of the second right-angle plate 36.

[0044] A telescopic cover body 300 is also nested in the outer cover 3. The telescopic cover body 300 is telescopic at the open end of the outer cover 3 and is telescopic along the extension direction of the production line. The telescopic cover body 300 is also a cover body with a right triangle cross section, but the telescopic cover body 300 is embedded in the outer cover 3 and can be pulled out or retracted along the extension direction of the production line. In addition, one end of the telescopic cover body 300 embedded in the outer cover 3 is open, while the other end is closed. As a result, the telescopic cover body 300 can extend out of the outer cover 3, thereby extending the dust collection range of the dust hood in the length direction of the production line.

[0045] Angle irons can be used as tracks for the telescopic cover 300 to slide in the outer cover 3. Specifically, a first angle iron 301 is provided on the top plate of the outer cover 3, the right-angled inner side of the first angle iron 301 faces downward, and its two right-angled sides are connected to the first right-angle plate 35, and the two ends of the first angle iron 301 are blocked. A second angle iron 302 is provided on the top surface of the telescopic cover 300, and its two right-angled sides are connected to the top surface of the telescopic cover 300, and the first angle iron 301 is stacked on the second angle iron 302. Specifically, the right-angled inner side of the first angle iron 301 rests on the right-angled outer side of the second angle iron 302, so that the first angle iron 301 and the second angle iron 302 can slide relative to each other, thereby using the first angle iron 301 and the second angle iron 302 to form a track for the telescopic cover 300 to slide in the outer cover 3. By driving the telescopic cover 300 so that its second angle iron 302 moves along the first angle iron 301, the telescopic cover 300 can be controlled to extend out of the outer cover 3 or retract into the outer cover 3. The specific structure for controlling the telescopic cover 300 to extend can be connected to the telescopic cover by the output end of a commonly used linear drive mechanism, and its description is omitted here. Of course, the above use of angle irons as slide rails is only exemplary. In fact, as long as a linear slide rail is set between the outer cover 3 and the telescopic cover 300, sliding can be achieved.

[0046] Among them, a second dust suction opening 301 is opened on the side of the telescopic cover body 300 close to the production line, and a second opening and closing door 302 is arranged on the second dust suction opening 301, and the upper side of the second opening and closing door 302 is rotatably connected to the upper end of the second dust suction opening 301. When the second opening and closing door is closed, the second opening and closing door can close the second dust suction opening by its own gravity; when the second opening and closing door is open, it can be obliquely supported by the supporting structure directly above the production line, thereby opening the second dust suction opening, so that the dust hood cavity generates negative pressure under the action of the dust removal system to absorb the smoke and dust above the production line. The first opening and closing door and the second opening and closing door can be opened at the same time to form a larger dust suction channel.

[0047] The dust hood of the above structure can close the door during shutdown or maintenance to make the space above the rolling line clear, without affecting the maintenance and hoisting operations. During the production process, the opening and closing door is opened, and the negative pressure between the opening and closing door and the dust hood cavity can make the smoke and dust near the rolled piece enter the pipeline under and on both sides of the dust hood, so that the dust collection efficiency is higher.

[0048] The upper side of the first opening and closing door 32 can be rotatably connected to the upper end of the first dust suction opening 31 through a hinge 322, or can be rotatably connected to the upper side wall of the outer cover at the first dust suction opening through other means such as a latch or a method that enables the first opening and closing door to be opened and closed up and down. Similarly, the second opening and closing door of the telescopic cover body is also rotatably connected to its second dust suction opening through a hinge.

[0049] In a specific embodiment of the utility model, one end of the support rod 37 supported on the inclined plate 34 is rotatably connected to the inclined plate 34, and the other end is supported at the preset position of the first opening and closing door. In order to flexibly adjust the opening and closing angle of the first opening and closing door, multiple support positioning points can be set on the side of the first opening and closing door. Specifically, as an example, a rotatable support member 372 is fixedly arranged on the inclined plate 34, and multiple support positioning points 374 are arranged on the first opening and closing door. One end of the support rod 37 is fixedly connected to the rotatable support member 372, and the other end is supported on the support positioning point 374. One of the support positioning points can maximize the opening angle of the first opening and closing door (such as the middle support positioning point). When the support structure is supported at other support positioning points, the opening angle of the first opening and closing door is small. The support structure adjusts the opening angle of the first opening and closing door by adjusting the position of the support positioning point. Similarly, the second opening and closing door of the telescopic cover 300 can also adjust the opening angle by combining multiple support positioning points with its own support rod, which will not be described in detail here.

[0050] In order not to interfere with the telescopic cover 300, the support rod 37 of the outer cover 3 can be arranged on the side of the inclined plate 34 opposite to the extension direction of the telescopic cover 300. The support rod of the telescopic cover 300 is arranged on the inclined plate of the telescopic cover 300.

[0051] In order to facilitate opening the opening and closing door, a handle 322 can also be provided on the side of the first opening and closing door away from the dust suction opening. The handle 324 can be welded and fixed on the first opening and closing door 32, or can be fixed on the first opening and closing door by bolts. In addition, an anti-slip cover can also be provided on the handle for easy use.

[0052] It can be seen from the above technical scheme that the dust hood provided by the utility model has a triangular shape in the front side view when opened, and a nearly parallelogram shape in the rear side view when opened; the dust hood is located above the production line side, and the space directly above the production line can be kept clear without affecting other operations; the telescopic hood body extends out of the outer hood, and the first opening and closing door and the second opening and closing door form a dust suction channel together with the outer hood and the telescopic hood body after they are opened. In addition, after the opening and closing door of the dust hood is opened, it is supported and fixed by a support rod. By adjusting the fixed position of the upper end of the support rod on the opening and closing door, the opening angle of the dust hood can be adjusted to control the dust suction effect. In addition, the operator can change the status of the equipment by manually opening and closing the door. Not only is it convenient to use, this design can also prevent smoke and dust from being discharged from the three directions of the left, lower and right of the dust hood during use ( Figure 2 The vacuum cleaner is equipped with a vacuum cleaner (as shown by the middle arrow) to enter the vacuum cleaner hood. Compared with the existing old type vacuum cleaner hoods with closed two sides, the vacuum cleaner is more efficient and occupies less space under the same working conditions.

[0053] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A retractable dust hood, characterized in that: include: An outer cover, wherein the cross section of the outer cover is a right triangle; and a first dust suction opening is opened on a side of the outer cover close to the production line, a first opening and closing door is arranged on the first dust suction opening, and an upper side edge of the first opening and closing door is rotatably connected to an upper end of the first dust suction opening; A telescopic cover body, the cross section of which is a right triangle, which is telescopically nested in the outer cover along the length direction of the production line, a second dust suction opening is opened on the side of the telescopic cover body close to the production line, a second opening and closing door is arranged on the second dust suction opening, and the upper side of the second opening and closing door is rotatably connected to the upper end of the second dust suction opening; The telescopic cover extends out of the outer cover, and the first opening and closing door and the second opening and closing door form a dust suction channel when they are in the open state; the telescopic cover retracts into the outer cover, and the first opening and closing door and the second opening and closing door close the dust suction channel when they are in the closed state.

2. The retractable dust hood according to claim 1, characterized in that: The upper side of the first opening and closing door is rotatably connected to the upper end of the first dust suction opening via a hinge; The upper side edge of the second opening and closing door is rotatably connected to the upper end of the second dust suction opening via a hinge.

3. The retractable dust hood according to claim 2, characterized in that: The outer cover includes a first right-angle plate, a second right-angle plate and an inclined plate connected therebetween. The first right-angle plate is connected to the second right-angle plate at a right angle. The inclined plate, the first right-angle plate and the second right-angle plate form a cylinder with a right-angled triangle cross-section, one end of which is open and the other end is a right-angled triangle side wall. The telescopic cover body can be telescopically nested in the open end of the outer cover.

4. The retractable dust hood according to claim 3, characterized in that: A first angle iron is arranged on the first right-angle plate of the outer cover, the right-angle inner side of the first angle iron faces downward, and its two right-angle sides are connected to the first right-angle plate; a second angle iron is arranged on the top surface of the telescopic cover body, and its two right-angle sides are connected to the top surface of the telescopic cover body; the first angle iron is stacked on the second angle iron, so that the first angle iron and the second angle iron can slide relative to each other, thereby controlling the telescopic cover body to slide out of the outer cover or retract into the outer cover.

5. The retractable dust hood according to claim 1, characterized in that: The dust hood is arranged above the production line side.

6. The retractable dust hood according to claim 1, characterized in that: The first opening and closing door and the second opening and closing door are both in an open state through their respective supporting structures. The supporting structure is a supporting rod, one end of which is supported on the opening and closing door, and the other end of which is supported on a plate surface opposite to the opening and closing door.

7. The retractable dust hood according to claim 4, characterized in that: The second right-angle plate of the outer cover is vertically arranged at the upper right side of the production line, and the first right-angle plate is fixedly connected to the dust collection duct.

8. The retractable dust hood according to any one of claims 1 to 7, characterized in that: When the first opening and closing door is in the open state, the first opening and closing door forms an angle of 45 degrees with the plane where the first dust suction opening is located; when the second opening and closing door is in the open state, the second opening and closing door forms an angle of 45 degrees with the plane where the second dust suction opening is located.

9. The retractable dust hood according to any one of claims 1 to 7, characterized in that: A handle is arranged on a side of the first opening and closing door away from the dust suction opening.

10. The retractable dust hood as claimed in claim 6, characterized in that: At least two support positioning points are arranged on the first opening and closing door and the second opening and closing door, and the support structure adjusts the opening angle of the corresponding opening and closing door through the support positioning points of the corresponding opening and closing door.

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