A telescopic dust hood

Abstract

This utility model relates to the field of dust collection hood technology, and more particularly to a telescopic dust collection hood. It primarily addresses the problem that fixed dust collection hoods, due to their inflexible opening and closing, easily cause interference and fail to meet the requirements of dust collection and on-site operation, especially given the large size of lead melting pots and the need for crane operation at the pot platform. The proposed technical solution includes a wall installed on the foundation, the wall being U-shaped with the lead melting pot located within it; a roller shutter machine installed at the top of the wall, used to extend and retract the roller shutter door; guide mechanisms located on both sides of the roller shutter door, used to guide the roller shutter door; and rubber baffles connected to both ends of the roller shutter door, the rubber baffles fitting snugly against the guide mechanisms to prevent debris from entering. This utility model can simultaneously address the effective collection of lead-containing dust from lead melting and refining and the space requirements for crane operation at the pot platform, ensuring a safe working environment, personnel health, and on-site operational flexibility.

Description

Technical Field

[0001] This utility model relates to the field of dust collection hood technology, and in particular to a telescopic dust collection hood. Background Technology

[0002] In the lead smelting and refining process, lead-containing fumes are generated. Although the amount of such fumes emitted is relatively small, their long-term presence at the production site can pollute the working environment. At the same time, lead, as a toxic and harmful substance, can seriously threaten the health of on-site workers. Therefore, it is essential to effectively collect and treat the lead-containing fumes generated in this process.

[0003] In actual production, lead melting pots are relatively large, typically ranging from 2 to 4 meters in diameter, with those having a capacity of 100 to 120 tons reaching approximately 3 meters in diameter. Simultaneously, various process operations need to be frequently carried out in the pot area, such as hoisting raw materials into the pot, installing and operating the mixer, and removing slag from the surface of the molten pool. These operations all require the assistance of overhead cranes. During hoisting operations, the dust and fume collection devices installed on top of the lead melting pot need to be temporarily activated to avoid interference with the crane or the objects being hoisted.

[0004] Based on the aforementioned production scenario requirements, a fixed upper dust collection hood would create spatial obstruction during lifting operations, failing to meet the flexibility requirements of on-site process operations for equipment opening and closing. Therefore, fixed dust collection hoods are unsuitable for dust collection scenarios in lead melting and refining. In view of this, this utility model proposes a telescopic dust collection hood. Utility Model Content

[0005] The purpose of this invention is to address the problems in the prior art where lead melting pots are large and require cranes to operate, and where fixed dust collection hoods cannot be opened and closed flexibly, which can easily cause interference and make it difficult to meet the needs of dust collection and on-site operation. Therefore, this invention proposes a telescopic dust collection hood.

[0006] The technical solution of this utility model is as follows: A telescopic dust collection hood includes a wall set on a foundation, the wall being arranged in a "U" shape with a lead melting pot located within the wall; a roller shutter machine installed on the top of the wall, the roller shutter machine being used to drive the roller shutter door to extend and retract; guide mechanisms set on both sides of the roller shutter door, the guide mechanisms being used to guide the roller shutter door; rubber baffles connected to both ends of the roller shutter door, the rubber baffles being tightly fitted with the guide mechanisms to prevent debris from entering; and a dust sweeping assembly installed on the side of the roller shutter machine, the dust sweeping assembly being used to clean the surface of the roller shutter door when it extends and retracts.

[0007] Optionally, the guiding mechanism includes two sets of guide blocks fixedly connected to the inner side of the wall. The two sets of guide blocks are symmetrically arranged. The guide blocks have an L-shaped structure and the bends are arc-shaped. The guide blocks have grooves, and multiple sets of sliders are slidably connected in the grooves. The multiple sets of sliders are respectively fixedly connected to both sides of multiple units of the roller shutter door.

[0008] Optionally, mounting grooves are fixedly provided at both ends of the slider, a fixed shaft is fixedly connected in the mounting groove, and a roller is rotatably connected on the fixed shaft.

[0009] Optionally, the rubber baffles are in four sets, which are fixedly connected to both sides of the roller shutter door, and the rubber baffles are in contact with the guide blocks.

[0010] Optionally, the dust removal assembly includes a first synchronous wheel, the rotating shaft of the rolling shutter machine protrudes and is fixedly connected to the first synchronous wheel, a synchronous belt is sleeved on the first synchronous wheel, a second synchronous wheel is connected in the synchronous belt, the diameter of the first synchronous wheel is larger than the diameter of the second synchronous wheel, a rotating rod is fixedly connected in the second synchronous wheel, and two sets of positioning seats are rotatably connected on the rotating rod, the positioning seats are fixedly connected to the top of the wall.

[0011] Optionally, a roller brush is installed on the outer ring of the rotating rod.

[0012] Optionally, a collection cover is fixedly connected to the side of the roller brush of the roller shutter machine, and a connecting pipe is connected to the top of the collection cover.

[0013] Optionally, two sets of guide blocks are provided with photoelectric sensors on both sides, and the four sets of photoelectric sensors correspond one-to-one with each other.

[0014] Optionally, a controller is also included, which is installed on the side of the wall. The roller shutter and the photoelectric sensor are both electrically connected to the controller.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] This utility model uses a roller shutter machine to drive the roller shutter door to extend and retract along an L-shaped guide block, which not only meets the space opening requirements during crane operation, but also seals the top of the enclosure and the opening side during normal dust collection, increases the negative pressure of the dust collection space, reduces the dust collection air volume, and saves fan energy consumption.

[0017] Further, the sliding roller reduces the friction of the roller shutter door during extension and retraction, the dust sweeping component cleans simultaneously and the dust is discharged through the collection hood to ensure smooth operation of the equipment, and the linkage between the radio eye and the controller can promptly stop the abnormal descent of the roller shutter door to avoid damage to objects or injury to personnel;

[0018] In summary, this utility model can simultaneously address the space requirements for effective collection of lead-containing fumes from lead melting and refining and the coordinated operation of boiler platform cranes, ensuring a safe working environment, personnel health, and on-site operational flexibility. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a telescopic dust collection hood;

[0020] Figure 2 This is a schematic diagram of the guide block structure;

[0021] Figure 3 This is a cross-sectional structural diagram of the guiding mechanism.

[0022] Figure label:

[0023] 1. Foundation; 2. Fence; 3. Roller shutter machine; 31. Roller shutter door;

[0024] 4. Guiding mechanism; 41. Guide block; 42. Slide groove; 43. Slider; 44. Mounting groove; 45. Fixed shaft; 46. Roller;

[0025] 5. Rubber baffle; 6. Dust removal assembly; 61. First synchronous pulley; 62. Synchronous belt; 63. Second synchronous pulley; 64. Rotating rod; 65. Positioning seat; 66. Roller brush;

[0026] 7. Collection hood; 71. Connecting pipe;

[0027] 8. Photoelectric sensor; 9. Controller. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0029] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example

[0034] like Figure 1 As shown, the present invention proposes a telescopic dust collection hood, which includes a wall 2 set on the foundation 1. The wall 2 is arranged in the shape of a "U" and the lead melting pot is located in the wall 2. A through hole is opened on one side of the wall 2 for the smoke extraction pipe of the lead melting pot to pass through. At the same time, the gap between the smoke extraction pipe and the through hole is blocked by sealing mud.

[0035] Furthermore, the aforementioned dust collection hood includes a roller shutter 3 installed on the top of the enclosure 2. The roller shutter 3 is used to drive the roller shutter door 31 to extend and retract. The roller shutter 3 driving the roller shutter door 31 to extend and retract is existing technology and will not be described in detail here.

[0036] For further details, please refer to Figures 1 to 3The dust collection hood also includes guide mechanisms 4 disposed on both sides of the roller shutter door 31. The guide mechanisms 4 guide the roller shutter door 31. The guide mechanisms 4 include two sets of guide blocks 41 fixedly connected to the inner side of the enclosure wall 2. The two sets of guide blocks 41 are symmetrically arranged. Each guide block 41 has a groove 42, and multiple sets of sliders 43 are slidably connected in the groove 42. The sliders 43 are fixedly connected to multiple units on both sides of the roller shutter door 31. When the roller shutter door 31 extends or retracts, the sliders 43 slide in the groove 42, thus moving the roller shutter door 31 along the length of the guide blocks 41 during extension and retraction. Each end of the slider 43 has a mounting groove 44 fixedly connected to a fixed shaft 45. Rollers 46 are rotatably connected to the fixed shaft 45. The rollers 46 reduce the friction of the sliders 43 during movement, making the extension and retraction of the roller shutter door 31 smooth. The guide block 41 has an L-shaped structure with an arc-shaped bend, so that when the roller shutter door 31 is fully extended, it can seal the top of the enclosure 2 and one side of the opening. The roller shutter door 31 can be completely closed, increasing the negative pressure in the space, reducing the dust collection air volume, and saving fan energy consumption. The bottom gap of the roller shutter door 31 can be adjusted arbitrarily by the roller shutter machine 3, which is beneficial for adjusting the negative pressure in the space and improving the dust collection effect.

[0037] Specifically, the aforementioned dust collection hood also includes rubber baffles 5 connected to both ends of the roller shutter door 31. The rubber baffles 5 are tightly fitted to the guide mechanism 4 to prevent debris from entering. There are four sets of rubber baffles 5, which are fixedly connected to both sides of the roller shutter door 31. The rubber baffles 5 are fitted to the guide blocks 41. When the roller shutter door 31 extends or retracts, they can close the gap between its sides and the guide blocks 41 to prevent debris from entering the slide groove 42 and causing the extension or retraction of the roller shutter door 31 to be obstructed.

[0038] Furthermore, the aforementioned dust collection hood also includes a dust-sweeping assembly 6 installed on the side of the roller shutter 3. The dust-sweeping assembly 6 is used to clean the surface of the roller shutter 31 when it extends or retracts. The dust-sweeping assembly 6 includes a first synchronous pulley 61, with the rotating shaft of the roller shutter 3 protruding and fixedly connected to the first synchronous pulley 61. When the roller shutter 3 retracts the roller shutter 31, it drives the first synchronous pulley 61 to rotate synchronously. A synchronous belt 62 is fitted onto the first synchronous pulley 61, and a second synchronous pulley 63 is connected in the synchronous belt 62. When the first synchronous pulley 61 rotates, it drives the second synchronous pulley 63 to rotate synchronously through the synchronous belt 62. The diameter of the first synchronous pulley 61 is larger than the diameter of the second synchronous pulley 63, so that when the first synchronous pulley 61 rotates at a low speed, it can drive the second synchronous pulley 63 to rotate at a relatively fast speed. A rotating rod 64 is fixedly connected in the second synchronous pulley 63, and the rotating rod 64 rotates synchronously through the second synchronous pulley 63. Two sets of positioning seats 65 are rotatably connected to the rotating rod 64. The positioning seats 65 are fixedly connected to the top of the wall 2, and their positions are fixed so that the rotating rod 64 remains in its original position. A roller brush 66 is installed on the outer ring of the rotating rod 64. When the rotating rod 64 rotates, it drives the roller brush 66 to rotate synchronously, cleaning the dust attached to the outer surface of the roller shutter door 31 and removing it from the surface of the roller shutter door 31.

[0039] A collection cover 7 is fixedly connected to the side of the roller shutter machine 3 near the roller brush 66. A connecting pipe 71 is connected to the top of the collection cover 7. The connecting pipe 71 is connected to a vacuum pump or fan for suction, which facilitates the removal of dust swept off the surface of the roller shutter door 31 by the roller brush 66, preventing dust from entering the interior of the roller shutter machine 3 and affecting its service life.

[0040] Finally, in the aforementioned dust collection hood, photoelectric sensors 8 are respectively installed on both sides of the two sets of guide blocks 41, with four sets of photoelectric sensors 8 corresponding one-to-one on the left and right. The dust collection hood also includes a controller 9 installed on the side of the enclosure 2. The roller shutter 3 and the photoelectric sensors 8 are both electrically connected to the controller 9. When an object blocks the corresponding photoelectric sensor 8, the connection signal is interrupted, thereby determining that there is an object or person below the roller shutter 31. The controller 9 then controls the roller shutter 3 to prevent the roller shutter 31 from falling completely or falling too low, which could damage objects or injure people.

[0041] In this embodiment, when the lead melting pot is in normal melting and refining state and no lifting or overhead crane operation is required, the controller 9 controls the roller shutter machine 3 to start, and the roller shutter machine 3 drives the roller shutter door 31 to extend along the guide mechanism 4. During this process, the sliders 43 on both sides of the roller shutter door 31 slide in the grooves 42 of the guide block 41. The fixed shaft 45 in the mounting groove 44 of the slider 43 drives the roller 46 to roll, reducing the frictional resistance between the slider 43 and the groove 42, and ensuring that the roller shutter door 31 extends and retracts smoothly. Since the guide block 41 has an L-shaped structure and the bend is arc-shaped, the roller shutter door 31 can seal the top of the enclosure 2 and the opening side after it is fully extended. At the same time, the four sets of rubber baffles 5 at both ends of the roller shutter door 31 are tightly attached to the guide block 41, sealing the gap between the roller shutter door 31 and the guide block 41 and preventing debris from entering the groove 42. At this time, the lead-containing fumes generated by the lead melting pot are discharged through the exhaust pipe in the through hole on one side of the enclosure 2. The gap between the through hole and the exhaust pipe is blocked by sealing mud to ensure the airtightness of the dust collection space, increase the negative pressure of the space, reduce the dust collection air volume, and save the energy consumption of the fan. When it is necessary to carry out operations that require the cooperation of a crane, such as hoisting in raw materials, setting up a mixer, or removing scum, the controller 9 controls the roller shutter 3 to rotate in reverse, driving the roller shutter door 31 to retract. During the retraction process, the roller shutter door 31 still moves along the slide groove 42 of the guide mechanism 4, and the rubber baffle 5 moves synchronously with the roller shutter door 31 and continuously seals the gap. After the roller shutter door 31 retracts, an open space is formed at the top of the enclosure 2 and on one side of the opening, which facilitates the smooth operation of the crane.

[0042] When the roller shutter machine 3 is working, its rotating shaft drives the first synchronous pulley 61 to rotate synchronously. The first synchronous pulley 61 drives the second synchronous pulley 63 to rotate via the synchronous belt 62. The second synchronous pulley 63 drives the rotating rod 64 to rotate on the positioning seat 65. The roller brush 66 on the outer ring of the rotating rod 64 cleans the surface of the roller shutter door 31. The dust generated during cleaning is collected by the collection cover 7 on the side of the roller shutter machine 3, and then sucked out by the vacuum pump or fan connected by the connecting pipe 71, preventing dust from entering the interior of the roller shutter machine 3 and affecting its service life.

[0043] During the extension of the roller shutter door 31, four sets of photoelectric sensors 8 on both sides of the two sets of guide blocks 41 monitor the area below the roller shutter door 31 in real time. If an object or person obstructs the photoelectric sensor 8, causing a signal interruption, the photoelectric sensor 8 transmits the signal to the controller 9. The controller 9 immediately controls the roller shutter machine 3 to stop operating, preventing the roller shutter door 31 from falling completely or falling too low, which could cause damage to objects or injury to personnel, thus ensuring operational safety.

[0044] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A telescopic dust hood, characterized in that Comprising: an enclosure wall arranged on a foundation (1), wherein the enclosure wall (2) is arranged in a U-shape and a lead melting pot is located in the enclosure wall (2); a roller shutter machine (3) installed on the top of the enclosure wall (2), wherein the roller shutter machine (3) is configured to drive a roller shutter door (31) to extend and retract; guide mechanisms (4) arranged on both sides of the roller shutter door (31), wherein the guide mechanisms (4) are configured to guide the roller shutter door (31); rubber baffles (5) connected to both ends of the roller shutter door (31), wherein the rubber baffles (5) are tightly attached to the guide mechanisms (4) to prevent sundries from entering; a dust sweeping assembly (6) installed on a side surface of the roller shutter machine (3), wherein the dust sweeping assembly (6) is configured to sweep the surface of the roller shutter door (31) when the roller shutter door (31) extends and retracts.

2. The telescopic dust collection hood according to claim 1, characterized in that, The guide mechanism (4) comprises two sets of guide blocks (41) fixedly connected to the inner side of the enclosure wall (2), the two sets of guide blocks (41) are symmetrically arranged, the guide block (41) has an L-shaped structure and a curved bending part, a sliding chute (42) is formed in the guide block (41), a plurality of sets of sliding blocks (43) are slidably connected in the sliding chute (42), and the plurality of sets of sliding blocks (43) are respectively and fixedly connected to both sides of a plurality of units of the roller shutter door (31).

3. A telescopic dust collection hood according to claim 2, characterized in that, Mounting grooves (44) are respectively fixedly formed at two ends of the sliding block (43), a fixed shaft (45) is fixedly connected in the mounting groove (44), and a roller (46) is rotatably connected on the fixed shaft (45).

4. A telescopic dust collection hood according to claim 3, characterized in that, There are four sets of rubber baffles (5), which are respectively fixedly connected to both sides of the two ends of the roller shutter door (31), and the rubber baffles (5) are attached to the guide blocks (41).

5. A telescopic dust collection hood according to claim 4, characterized in that, The dust sweeping assembly (6) comprises a first synchronous wheel (61), a rotating shaft of the roller shutter machine (3) protrudes and is fixedly connected with the first synchronous wheel (61), a synchronous belt (62) is sleeved on the first synchronous wheel (61), a second synchronous wheel (63) is connected in the synchronous belt (62), the diameter of the first synchronous wheel (61) is larger than that of the second synchronous wheel (63), a rotating rod (64) is fixedly connected in the second synchronous wheel (63), two sets of positioning seats (65) are rotatably connected on the rotating rod (64), and the positioning seats (65) are fixedly connected to the top of the enclosure wall (2).

6. A telescopic dust collection hood according to claim 5, characterized in that, A rolling brush (66) is installed on an outer ring of the rotating rod (64).

7. A telescopic dust collection hood according to claim 6, characterized in that, A collection cover (7) is fixedly connected to a side of the roller shutter machine (3) close to the rolling brush (66), and a connecting pipe (71) is connected to the top of the collection cover (7).

8. A telescopic dust collection hood according to claim 7, characterized in that, Opposite-emission photoelectric eyes (8) are respectively arranged on both sides of the two sets of guide blocks (41), and the four sets of opposite-emission photoelectric eyes (8) are in one-to-one correspondence left and right.

9. A telescopic dust collection hood according to claim 7, characterized in that, The device further comprises a controller (9) installed on a side surface of the enclosure wall (2), and both the roller shutter machine (3) and the opposite-emission photoelectric eyes (8) are electrically connected to the controller (9).

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