Workshop ventilation duct with dust removal function

Abstract

The utility model relates to a ventilation pipeline dust removal equipment technical field, concretely relates to a workshop ventilation pipeline with dust removal function, including pipeline main part, dust removal unit and filter dust bag, wherein pipeline main part includes the air inlet and air outlet of being located at both ends, dust removal unit includes guide entry, guide export, unloading door and hinge mechanism, a plurality of dust removal units interval setting are in the lower part of pipeline main part, guide entry is communicated with the inner wall of pipeline main part, guide export is located below guide entry, unloading door is matched with guide export, hinge mechanism is used for driving unloading door to open or close guide export, filter dust bag is set up in guide export outside, the open end of filter dust bag is detachably connected with dust removal unit, and the dust removal operation can be completed through the regular replacement filter dust bag, thereby reducing the inner wall dismounting cleaning workload of pipeline main part. In addition, the inner wall of pipeline main part on the both sides of guide entry is equipped with the wing type flow guide plate, makes inside airflow form accelerated vortex, thereby improves dust removal efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of ventilation duct dust removal equipment, specifically relating to a workshop ventilation duct with dust removal function. Background Technology

[0002] Industrial production processes generate a lot of waste gas, which often needs to be discharged outside the workshop through ventilation ducts. In order to save workshop work space, ventilation ducts are usually installed horizontally on the workshop ceiling. Long-term use can easily lead to a large amount of dust adhering to the inner wall of the ventilation duct, thus affecting the ventilation efficiency of the ventilation duct. Moreover, dust accumulation can cause the ventilation duct to sag and deform, or even break in some places.

[0003] Traditional dust removal methods involve periodically disassembling ventilation ducts and cleaning their inner walls, which is inconvenient and affects workshop production efficiency. Existing technologies use dust removal mechanisms inside the ventilation ducts to filter and remove dust from exhaust gases, reducing dust content. However, the surface of these mechanisms easily accumulates and adheres to large amounts of dust, requiring frequent disassembly and cleaning. Even with long-term use, dust deposition still occurs on the inner walls of the ventilation ducts. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model proposes a workshop ventilation duct with dust removal function. By installing a dust removal unit on the lower wall of the ventilation duct, dust accumulation is reduced, thereby achieving the dust removal function.

[0005] To solve the above-mentioned technical problems, this utility model provides a workshop ventilation duct with dust removal function, comprising:

[0006] The main body of the duct includes air inlets and air outlets located at both ends;

[0007] A dust removal unit includes an inlet, an outlet, a discharge door, and a hinge mechanism. Multiple dust removal units are spaced apart at the lower part of the main pipe body. The inlet communicates with the inner wall of the main pipe body. The outlet is located below the inlet. The discharge door matches the outlet. The hinge mechanism is used to drive the discharge door to open or close the outlet.

[0008] A dust filter bag is fitted over the outside of the outlet, and the open end of the dust filter bag is detachably connected to the dust removal unit.

[0009] Preferably, the above solution further includes an airfoil guide vane, which is disposed on the inner wall of the pipe body on both sides of the inlet, with the smooth leading edge of the airfoil guide vane facing the air inlet and the sharp trailing edge facing the air outlet.

[0010] Preferably, in the above scheme, a plurality of airfoil guide vanes are equally spaced between the two inlets, and the spacing between two adjacent airfoil guide vanes is set to 0.8-1.0 times the chord length of the airfoil guide vane.

[0011] Preferably, in the above scheme, the main body of the pipe is set as a circular cross-section pipe, the chord length of the airfoil guide is set as 0.3-0.5 times the inner diameter of the main body of the pipe, and the installation angle of attack is set as 12°-15°.

[0012] Preferably, in the above scheme, the distance between the edge of the inlet and the nearest airfoil deflector is set to 0.8-1.0 times the chord length of the airfoil deflector.

[0013] Preferably, in the above scheme, the hinge mechanism includes a hinge member and a counterweight member. The fixed end of the hinge member is connected to the outer wall of the outlet, and one side of the rotating end of the hinge member is connected to the unloading gate, while the other side is connected to the counterweight member.

[0014] Preferably, in the above scheme, the counterweight is configured as an adjustable structure, including a weight box and several standard weights fixed to the other side of the rotating end of the hinge.

[0015] Preferably, in the above scheme, the dust removal unit further includes a horizontally arranged dust baffle, the outlet passes through the middle of the dust baffle, and the open end of the filter bag is detachably connected to the periphery of the dust baffle.

[0016] Preferably, in the above scheme, the cross-sectional area of ​​the outlet is set to 40%-60% of the cross-sectional area of ​​the inlet.

[0017] Preferably, in the above solution, the dust baffle is provided with an annular groove around its periphery, and the opening end of the dust filter bag is provided with an elastic hoop that matches the annular groove.

[0018] Compared with existing technologies, this utility model has the following beneficial effects:

[0019] 1. A workshop ventilation duct with dust removal function according to this utility model includes a duct body, a dust removal unit and a dust filter bag. The dust removal unit includes an inlet, an outlet, a discharge door and a hinge mechanism. Multiple dust removal units are spaced apart at the lower part of the duct body. The inlet is connected to the inner wall of the duct body, the outlet is located below the inlet, and the discharge door matches the outlet. When the hinge mechanism drives the discharge door to close, dust inside the duct body can be deposited and fall into the inlet. When the hinge mechanism drives the discharge door to open, dust can fall from the outlet into the dust filter bag. The dust removal operation can be completed by periodically replacing the dust filter bag, thereby reducing the workload of disassembling and cleaning the inner wall of the duct body.

[0020] 2. In this utility model, the airfoil guide vanes are disposed on the inner walls of the pipe body on both sides of the inlet. The smooth leading edge of the airfoil guide vane faces the air inlet, and the sharp trailing edge faces the air outlet. The smooth leading edge can reduce airflow separation loss, and the sharp trailing edge can accelerate vortex formation, thereby improving dust removal efficiency. Multiple airfoil guide vanes are equally spaced between two inlets. The chord length of the airfoil guide vane is set to 0.3-0.5 times the inner diameter of the pipe body, and the installation angle of attack is set to 12°-15°, which can form vortices that accelerate continuously and multiple times. The distance between the edge of the inlet and the nearest airfoil guide vane is set to 0.8-1.0 times the chord length of the airfoil guide vane, so that the core area of ​​the vortex is precisely aligned with the inlet, thereby improving dust transfer efficiency.

[0021] 3. The hinge mechanism in this utility model includes a hinge member and a counterweight. The fixed end of the hinge member is connected to the outer wall of the outlet, and one side of the rotating end of the hinge member is connected to the unloading door, while the other side is connected to the counterweight. Utilizing the principle of gravity balance, automatic dust unloading can be achieved. The counterweight is configured as an adjustable structure, including a weight box fixed to the other side of the rotating end of the hinge member and several standard weights. The weight threshold can be set and standard weights can be loaded according to the internal air pressure of the pipeline, the type of dust, and the dust removal frequency.

[0022] 4. The dust removal unit of this utility model also includes a horizontally arranged dust baffle plate, with the outlet penetrating through the middle of the dust baffle plate. The periphery of the dust baffle plate is provided with an annular groove, and the opening end of the filter bag is provided with an elastic hoop that matches the annular groove, which facilitates quick replacement of the filter bag. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the assembly structure of a workshop ventilation duct with dust removal function according to the present invention.

[0024] Figure 2 This is a first-view structural schematic diagram of a workshop ventilation duct with dust removal function according to the present invention.

[0025] Figure 3 This is a second-view structural schematic diagram of a workshop ventilation duct with dust removal function according to the present invention.

[0026] Figure 4 This utility model Figure 3 A cross-sectional view along the AA direction.

[0027] Figure 5 This utility model Figure 4 A magnified view of part B in the middle.

[0028] Figure 6 This is a third-view structural diagram of a workshop ventilation duct with dust removal function according to the present invention.

[0029] Figure 7This utility model Figure 6 A sectional view along the CC direction.

[0030] Figure 8 This is a schematic diagram of the installation structure of the dust removal unit of this utility model.

[0031] Among them, 1-pipe body, 11-air inlet, 12-air outlet, 2-dust removal unit, 21-inlet, 22-outlet, 23-unloading door, 24-hinge mechanism, 241-hinge component, 242-counterweight component, 25-dust baffle, 251-annular groove, 3-dust filter bag, 31-open end, 32-elastic hoop, 4-airfoil guide plate, 41-side airfoil plates, 42-central airfoil plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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. The embodiments of this utility model will now be described based on its overall structure.

[0036] like Figures 1 to 3 As shown, this utility model discloses a workshop ventilation duct with dust removal function, including: a duct body 1, a dust removal unit 2, and a dust filter bag 3. The duct body 1 includes an air inlet 11 and an air outlet 12 located at both ends. The dust removal unit 2 includes an inlet 21, an outlet 22, a discharge door 23, and a hinge mechanism 24. Multiple dust removal units 2 are spaced apart at the lower part of the duct body 1. The inlet 21 is connected to the inner wall of the duct body 1. The outlet 22 is located below the inlet 21. The discharge door 23 is matched with the outlet 22. The hinge mechanism 24 is used to drive the discharge door 23 to open or close the outlet 22. The dust filter bag 3 is sleeved on the outside of the outlet 22. The open end 31 of the dust filter bag 3 is detachably connected to the dust removal unit 2. In this embodiment, a dust removal unit 2 is installed on the lower wall of the pipe body 1. When the hinge mechanism 24 drives the unloading door 23 to close, the dust inside the pipe body 1 can be deposited and fall into the inlet 21. When the hinge mechanism 24 drives the unloading door 23 to open, the dust can fall from the outlet 22 into the filter bag 3. The dust removal operation can be completed by replacing the filter bag 3 regularly, thereby reducing the workload of disassembling and cleaning the inner wall of the pipe body 1.

[0037] It should be understood that the smaller the spacing of the inlet ports 21 arranged along the axial direction of the pipe body 1, the less dust will be deposited on the bottom wall of the pipe body 1; the larger the size of the inlet ports 21, the higher the dust collection efficiency. In this embodiment, the hinge mechanism 24 can be driven by the principle of gravity balance, or it can be driven by an electric push rod in conjunction with a controller for timing.

[0038] like Figure 3 , Figure 4 As shown, this embodiment also includes an airfoil guide plate 4, which is disposed on the inner wall of the pipe body 1 on both sides of the inlet 21. The smooth leading edge of the airfoil guide plate 4 faces the air inlet 11, and the sharp trailing edge faces the air outlet 12. The smooth leading edge can reduce airflow separation loss, and the sharp trailing edge can accelerate vortex formation, thereby improving dust removal efficiency.

[0039] Specifically, multiple airfoil guide vanes 4 are equally spaced between the two inlets 21, with the spacing between two adjacent airfoil guide vanes 4 set to 0.8-1.0 times the chord length of the airfoil guide vane 4, enabling the formation of continuously accelerating vortices. Furthermore, the main pipe body 1 is a circular cross-section pipe, the chord length of the airfoil guide vanes 4 is set to 0.3-0.5 times the inner diameter of the main pipe body 1, and the installation angle of attack is set to 12°-15°. Figures 5 to 7 As shown, in this embodiment, three equally spaced airfoil guide vanes 4 with equal chord lengths are provided between the two inlet ports 21. The installation angle of attack of the two side airfoil guide vanes 41 is set to 12°, and the installation angle of attack of the middle airfoil guide vane 41 is set to 15°, which can further optimize aerodynamic performance and improve dust removal efficiency. Furthermore, the distance between the edge of the inlet port 21 and the nearest airfoil guide vane 4 is set to 0.8-1.0 times the chord length of the airfoil guide vane 4, so that the vortex core area is precisely aligned with the inlet port, thereby improving dust transfer efficiency.

[0040] Continue to refer to Figure 2 and Figure 5 The hinge mechanism 24 includes a hinge member 241 and a counterweight 242. The fixed end of the hinge member 241 is connected to the outer wall of the outlet 22, and one side of the rotating end of the hinge member 241 is connected to the unloading gate 23, while the other side is connected to the counterweight 242. Utilizing the principle of gravity balance, when the weight of the dust on the unloading gate 23 exceeds a weight threshold, the side of the unloading gate 23 away from the hinge member 241 tilts downward and automatically opens the outlet 22, thus achieving automatic dust unloading. It is worth noting that the hinge member 241 is located on the side away from the air inlet 11, and a rubber ring is provided around the outlet 22, which can improve the sealing performance of the unloading gate 23 in the closed state and also provide shock absorption and cushioning for the unloading gate 23.

[0041] Furthermore, the counterweight 242 is configured as an adjustable structure, including a weight box fixed to the other side of the rotating end of the hinge 241 and several standard weights. The total mass adjustment range of the standard weights is 50-300g. When no standard weights are loaded in the weight box, the two sides of the hinge 241 reach a state of gravity balance. The weight threshold is set according to the internal air pressure, dust type and dust removal frequency of the pipeline body 1 and standard weights are loaded.

[0042] Continue to refer to Figure 5 , Figure 6 and Figure 8The dust removal unit 2 also includes a horizontally arranged dust baffle 25, with an outlet 22 penetrating the middle of the dust baffle 25. The open end 31 of the filter bag 3 is detachably connected to the periphery of the dust baffle 25. Specifically, the cross-sectional area of ​​the outlet 22 is set to 40%-60% of the cross-sectional area of ​​the inlet 21, making the dust removal unit 2 form a funnel-shaped structure. Furthermore, the projected area of ​​the dust baffle 25 is larger than the projected area of ​​the unloading door 23 and the hinge mechanism 24, ensuring that the normal rotation of the unloading door 23 is not affected after the filter bag 3 is fitted around the periphery of the dust baffle 25. Preferably, the periphery of the dust baffle 25 is provided with an annular groove 251, and the open end 31 of the filter bag 3 is provided with an elastic hoop 32 that matches the annular groove 251, facilitating quick replacement of the filter bag 3. (Continue to refer to...) Figure 8 The rounded corners of the inner periphery of the inlet 21 enable a smooth airflow transition and reduce the pressure loss of the inlet 21.

[0043] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A workshop ventilation duct with dust removal function, characterized in that, include: The main body of the duct includes air inlets and air outlets located at both ends; A dust removal unit includes an inlet, an outlet, a discharge door, and a hinge mechanism. Multiple dust removal units are spaced apart at the lower part of the main pipe body. The inlet communicates with the inner wall of the main pipe body. The outlet is located below the inlet. The discharge door matches the outlet. The hinge mechanism is used to drive the discharge door to open or close the outlet. A dust filter bag is fitted over the outside of the outlet, and the open end of the dust filter bag is detachably connected to the dust removal unit.

2. A workshop ventilation duct with dust removal function according to claim 1, characterized in that, It also includes airfoil-shaped deflectors, which are disposed on the inner wall of the main body of the pipe on both sides of the inlet, with the smooth leading edge of the airfoil-shaped deflector facing the air inlet and the sharp trailing edge facing the air outlet.

3. A workshop ventilation duct with dust removal function according to claim 2, characterized in that, Multiple airfoil deflectors are equally spaced between two airfoil inlets, and the distance between two adjacent airfoil deflectors is set to 0.8-1.0 times the chord length of the airfoil deflector.

4. A workshop ventilation duct with dust removal function according to claim 3, characterized in that, The main body of the pipe is configured as a circular cross-section pipe, the chord length of the airfoil guide is set to 0.3-0.5 times the inner diameter of the main body of the pipe, and the installation angle of attack is set to 12°-15°.

5. A workshop ventilation duct with dust removal function according to claim 2, characterized in that, The distance between the edge of the inlet and the nearest airfoil deflector is set to 0.8-1.0 times the chord length of the airfoil deflector.

6. A workshop ventilation duct with dust removal function according to claim 1, characterized in that, The hinge mechanism includes a hinge member and a counterweight member. The fixed end of the hinge member is connected to the outer wall of the outlet, and one side of the rotating end of the hinge member is connected to the unloading gate, while the other side is connected to the counterweight member.

7. A workshop ventilation duct with dust removal function according to claim 6, characterized in that, The counterweight is configured as an adjustable structure, including a weight box and several standard weights fixed to the other side of the rotating end of the hinge.

8. A workshop ventilation duct with dust removal function according to claim 1, characterized in that, The dust removal unit also includes a horizontally arranged dust baffle plate, the outlet of which passes through the middle of the dust baffle plate, and the open end of the filter bag is detachably connected to the periphery of the dust baffle plate.

9. A workshop ventilation duct with dust removal function according to claim 8, characterized in that, The cross-sectional area of ​​the outlet is set to 40%-60% of the cross-sectional area of ​​the inlet.

10. A workshop ventilation duct with dust removal function according to claim 8, characterized in that, The dust baffle plate has an annular groove around its periphery, and the opening end of the dust filter bag has an elastic hoop that matches the annular groove.

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