Three-side air draft type side suction hood
The design of the three-sided exhaust side suction hood solves the problem that traditional dust side suction hoods cannot effectively collect dust outside the hood opening, achieving efficient dust collection and a safe operating environment.
Patent Information
- Application Number
- CN202422927593.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Traditional single-sided dust side-suction hoods cannot effectively collect dust outside the hood opening during the disassembly of powder ton bags, causing dust to escape and affect the working environment, and dust tends to accumulate at the bottom of the hood.
It adopts a three-sided exhaust side suction hood, including exhaust sections on the back and two sides, to form a negative pressure cavity. Through multiple exhaust holes and channel design, combined with valve plate adjustment, it can achieve efficient suction and uniform control of dust.
It improves dust collection efficiency, reduces dust escape, prevents dust from entering the human body, ensures operator safety, and guarantees the uniformity and reliability of dust collection.
Smart Images
Figure CN223571612U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dust removal technology for ton bag feeding, specifically relating to a three-sided exhaust side suction hood. Background Technology
[0002] A dust side-suction hood is an environmental protection device used to collect dust emitted during the dismantling of powder ton bags. Traditional dust side-suction hoods are typically single-sided exhaust hoods (equivalent to placing the hood sideways near the source of dust). They draw air from the inlet side, which is some distance from the source. They usually only effectively collect dust from the inlet side, while the collection effect on other sides, especially the side where workers operate, is relatively poor. This allows dust to easily escape from other directions, affecting the working environment. Furthermore, during the exhaust process, the collision between the dust's trajectory and the hood's structure can cause a small amount of dust to accumulate at the bottom of the hood. Utility Model Content
[0003] In order to overcome the above-mentioned defects of the prior art, this utility model provides a three-sided exhaust side suction hood, which can improve the dust collection efficiency during the disassembly and unloading of powder ton bags without affecting the normal operation of workers, and reduce the impact of dust on operators.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A three-sided exhaust side-suction hood includes a three-sided hood body with a symmetrical structure. Each hood body has a rear exhaust section and two side exhaust sections, which together form a negative pressure cavity. The rear exhaust section has a partition that divides the internal cavity into a front exhaust channel near the negative pressure cavity and a rear exhaust channel away from the negative pressure cavity. The rear exhaust section has a rear exhaust hole on the side near the negative pressure cavity that connects the front exhaust channel and the negative pressure cavity. The side exhaust sections have a connection to the rear exhaust channels. The side exhaust duct is connected to the negative pressure cavity. A side exhaust hole connecting the side exhaust duct and the negative pressure cavity is provided on the side of the side exhaust section near the negative pressure cavity. An exhaust hole is provided on the partition plate, and a valve plate is provided at the exhaust hole. A valve plate rotating rod is fixedly connected to the valve plate. The valve plate rotating rod is rotatably connected to the partition plate, and the upper end of the valve plate rotating rod extends from the top plate of the rear exhaust section and is threaded with a nut. The nut locks the valve plate rotating rod. A docking pipe for connecting a dust collector is provided on the side of the rear exhaust section away from the negative pressure cavity. The docking pipe is connected to the rear exhaust duct.
[0006] As a preferred scheme of the utility model, the shape of the front side air extraction passage under the horizontal section is trapezoidal; the shape of the rear side air extraction passage under the horizontal section is eight-shaped; the shape of the side air extraction passage under the horizontal section is rectangular.
[0007] As a preferred scheme of the utility model, the back side air extraction hole is provided with multiple, and the multiple back side air extraction holes are arranged in a rectangular array.
[0008] As a preferred scheme of the utility model, the back side air extraction hole is a rectangular hole.
[0009] As a preferred scheme of the utility model, the side air extraction hole is provided with multiple, and the multiple side air extraction holes are arranged in a rectangular array.
[0010] As a preferred scheme of the utility model, the side air extraction hole is a square hole.
[0011] As a preferred scheme of the utility model, the side air extraction hole is divided into a middle hole group and an end hole group according to different arrangement positions.
[0012] As a preferred scheme of the utility model, the hole size of the middle hole group is smaller than the hole size of the end hole group.
[0013] As a preferred scheme of the utility model, the hole size of each side air extraction hole of the end hole group gradually increases from the proximal end to the distal end of the side air extraction part.
[0014] Compared with the prior art, the three-side air extraction type side suction cover of the utility model has the following beneficial effects:
[0015] The three-side air extraction type side suction cover of the utility model adopts a three-side suction structure, is only opened on one side of the worker operation position (i.e. a cover opening), can intercept dust from escaping in directions other than the cover opening, and forms a U-shaped negative pressure environment through the air extraction passage and appropriate air extraction hole positions, realizes efficient suction of the escaping dust, greatly reduces the escape of dust from the side of the cover opening, and prevents dust from entering the human body to cause harm; meanwhile, through the adjustment of the valve plate, the air volume of the front side air extraction passage, the rear side air extraction passage and the side air extraction passages on both sides can be controlled, thereby controlling the suction force of the back side and the left and right sides, and ensuring the uniformity and reliability of dust suction on each side of the cover body. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the utility model embodiment, the drawings of the embodiment will be briefly introduced below.
[0017] Fig. 1 The structure schematic view of the three-side air extraction type side suction cover provided by the utility model embodiment is shown in the figure.
[0018] Fig. 2 A horizontal sectional view of the three-side suction type side suction cover provided by the embodiment of the present utility model;
[0019] Fig. 3 A disconnected view when the hidden side suction part of the three-side suction type side suction cover provided by the embodiment of the present utility model is hidden.
[0020] Markings in the figure:
[0021] Back suction part 1; side suction part 2; negative pressure cavity 3; partition 4; front side suction passage 5; rear side suction passage 6; back suction hole 7; side suction passage 8; side suction hole 9; middle hole group 9a; end hole group 9b; suction hole 10; valve plate 11; valve plate rotating rod 12; nut buckle 13; butt joint pipeline 14. Specific implementation
[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the present utility model.
[0023] For example, Figs. 1 to 3As shown in the figure, this utility model provides a three-sided exhaust side suction cover, which includes a three-sided cover body with a symmetrical structure. The three-sided cover body has a rear exhaust section 1 and two side exhaust sections 2. The rear exhaust section 1 and the two side exhaust sections 2 together form a negative pressure cavity 3. The rear exhaust section 1 has a partition 4 that divides the internal cavity of the rear exhaust section 1 into a front exhaust channel 5 near the negative pressure cavity 3 and a rear exhaust channel 6 away from the negative pressure cavity 3. The rear exhaust section 1 near the negative pressure cavity 3 has a rear exhaust hole 7 connecting the front exhaust channel 5 and the negative pressure cavity 3. The side exhaust sections 2 have side exhaust channels communicating with the rear exhaust channel 6. The side exhaust section 2, near the negative pressure cavity 3, has a side exhaust hole 9 connecting the side exhaust channel 8 and the negative pressure cavity 3. The partition 4 has an exhaust hole 10, and a valve plate 11 is provided at the exhaust hole 10. A valve plate rotating rod 12 is fixedly connected to the valve plate 11. The valve plate rotating rod 12 is rotatably connected to the partition 4, and its upper end extends from the top plate of the rear exhaust section 1 and is threaded with a nut buckle 13. The nut buckle 13 can lock the valve plate rotating rod 12, thereby adjusting the opening degree of the exhaust hole. The rear exhaust section 1, away from the negative pressure cavity 3, has a docking pipe 14 for connecting to a dust collector, which is connected to the rear exhaust channel 6.
[0024] In use, the three-sided exhaust side suction hood of this utility model embodiment is placed at the discharge port and connected to a dust collector (such as a bag filter) through the docking pipe 14. When a lightweight fine powder ton bag is hoisted to the top of the discharge port to drop the material, the centrifugal fan is started. The powder that is scattered to the surroundings is collected by the back exhaust section 1 and the side exhaust sections 2 on both sides under the action of the centrifugal fan and transported to the bag filter for processing.
[0025] Therefore, the three-sided exhaust side-suction hood according to the embodiment of this utility model adopts a three-sided side-suction structure, which is only open on the side of the worker's operating position (i.e., the hood opening). It can intercept dust from escaping from directions other than the hood opening, and form a U-shaped negative pressure environment through the exhaust channel and the appropriate exhaust hole position to achieve efficient suction of the escaped dust, thereby greatly reducing the dust from escaping from the hood opening side and preventing dust from entering the human body and causing harm. At the same time, by adjusting the valve plate 11, the air volume of the front exhaust channel 5, the rear exhaust channel 6 and the side exhaust channels 8 on both sides can be controlled, thereby controlling the suction force on the back side and the left and right sides, ensuring the uniformity and reliability of dust suction on all sides of the hood.
[0026] Exemplarily, the front side suction passage 5 is in the shape of a trapezoid in horizontal section; the rear side suction passage 6 is in the shape of a figure-eight in horizontal section; and the side suction passage 8 is in the shape of a rectangle in horizontal section. Such design can reduce the collision between the dust movement track and the side suction cover structure during the suction process, so that the dust can pass through the suction passages without any obstruction, and effectively reduce the dust accumulation at the bottom of the cover.
[0027] Exemplarily, the rear side suction holes 7 are provided in plurality, and the plurality of rear side suction holes 7 are arranged in a rectangular array. The rear side suction holes 7 are preferably rectangular holes.
[0028] Exemplarily, the side suction holes 9 are provided in plurality, and the plurality of side suction holes 9 are arranged in a rectangular array. The side suction holes 9 are preferably square holes.
[0029] Exemplarily, the side suction holes 9 are divided into a middle hole group 9a and an end hole group 9b according to different arrangement positions. During operation, the dust portion corresponding to the proximal end of the side suction portion 2 is mainly sucked by the front suction portion 1, while the dust portion gradually moving away from the negative pressure area of the rear suction portion 1 is respectively sucked into the side suction portion 2 by the middle hole group 9a and the end hole group 9b. Thus, the proximal end of the side suction portion 2 (i.e. the side close to the rear suction portion 1) is a non-hole area, so that the air volume in the side suction portion 2 can be effectively distributed to the middle and distal end of the side suction portion 2, thereby ensuring that the middle and distal end of the side suction portion 2 have reliable suction force.
[0030] Further, the hole size of the middle hole group 9a is smaller than the hole size of the end hole group 9b, and the hole size of each side suction hole 9 of the end hole group 9b gradually increases from the proximal end to the distal end of the side suction portion 2, so that the suction air volume of the side suction portion 2 gradually increases from the middle to the distal end, to compensate for the suction force gradually moving away from the negative pressure area of the rear suction portion 1, to ensure that the suction force on the dust close to the cover opening is sufficient, and at the same time, to enable a certain negative pressure outside a certain distance from the cover opening, to effectively prevent the dust from overflowing from the side of the cover opening.
[0031] In summary, the three-side suction type side suction cover according to the embodiments of the present application can improve the collection efficiency of dust escaping during the disassembly and ton bag feeding process, reduce the influence on the operator, and enable most of the dust to be collected without affecting the action of the worker disassembling and connecting the ton bag.
[0032] Although the preferred embodiments of the present application have been described, those skilled in the art who have the basic inventive concept can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.
[0033] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.
Claims
1. A three-sided exhaust side-suction hood, characterized in that, It includes a three-sided mask body with a symmetrical structure. The three-sided mask body is provided with a rear exhaust section and two side exhaust sections. The rear exhaust section and the two side exhaust sections together form a negative pressure cavity. The rear exhaust section is equipped with a partition, which divides the internal cavity of the rear exhaust section into a front exhaust channel near the negative pressure cavity and a rear exhaust channel away from the negative pressure cavity. The rear exhaust section has a rear exhaust hole on the side near the negative pressure cavity that connects the front exhaust channel and the negative pressure cavity. The side exhaust section is equipped with a side exhaust channel that connects to the rear exhaust channel. The side exhaust section has a side exhaust hole on the side near the negative pressure cavity that connects the side exhaust channel and the negative pressure cavity. The partition is provided with an exhaust hole, and a valve plate is provided at the exhaust hole. A valve plate rotating rod is fixedly connected to the valve plate. The valve plate rotating rod is rotatably connected to the partition, and the upper end of the valve plate rotating rod extends from the top plate of the exhaust part on the back and is threaded with a nut. The nut can lock the valve plate rotating rod. The rear exhaust section is provided with a docking pipe for connecting to the dust collector on the side away from the negative pressure cavity, and the docking pipe is connected to the rear exhaust channel.
2. The three-sided exhaust side suction cover according to claim 1, characterized in that: The front exhaust duct is trapezoidal in shape in horizontal cross-section; the rear exhaust duct is figure-eight shaped in horizontal cross-section; and the side exhaust duct is rectangular in shape in horizontal cross-section.
3. A three-sided exhaust side suction hood according to claim 1, characterized in that: The rear exhaust vents are provided in multiple ways, and the multiple rear exhaust vents are arranged in a rectangular array.
4. A three-sided exhaust side suction hood according to claim 3, characterized in that: The exhaust vent on the back is a rectangular hole.
5. A three-sided exhaust side suction hood according to claim 1, characterized in that: The side exhaust vents are provided in multiple ways, and the multiple side exhaust vents are arranged in a rectangular array.
6. A three-sided exhaust side suction hood according to claim 5, characterized in that: The side ventilation holes are square.
7. A three-sided exhaust side suction hood according to claim 6, characterized in that: The side ventilation holes are divided into middle hole groups and end hole groups according to their different arrangement positions.
8. A three-sided exhaust side suction hood according to claim 7, characterized in that: The orifice size of the middle hole group is smaller than that of the end hole group.
9. A three-sided exhaust side suction hood according to claim 8, characterized in that: The orifice size of each side exhaust hole of the end hole group gradually increases from the proximal end to the distal end of the side exhaust section.