Dust suppression mechanism and hopper

Abstract

The utility model belongs to the technical field of hoppers. The dust suppression mechanism comprises a mounting frame used for mounting the dust suppression mechanism on the feeding port; the material guiding assemblies are arranged on the mounting frame at intervals, and a material conveying channel is formed between every two adjacent material guiding assemblies; and the movable dust blocking assembly is movably arranged on the mounting frame, the movable dust blocking assembly is located below the material guiding assembly, and the movable dust blocking assembly can be switched between a feeding state and a non-feeding state and is used for opening or closing the material conveying channel. The feeding port is used for solving the technical problem that the dust removal effect and the feeding efficiency of an existing feeding port cannot be considered at the same time. The utility model further discloses the hopper, and the dust suppression mechanism is arranged on the hopper.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoppers, and in particular relates to a dust suppression mechanism and a hopper comprising the dust suppression mechanism. Background Art

[0002] In the feed industry, a large amount of dust is generated when materials are poured into a hopper or pit during the feeding process. This is because when materials enter a confined space, they displace an equal volume of air. This diffused airflow carries away the dust generated during the feeding process, causing serious pollution. The dust removal solution for the feed port uses a pulse dust removal fan to create negative pressure, which removes the dust from the feed port to prevent overflow. However, the steel grille at the feed port has a large ventilation area, requiring a high-power fan to draw the dust from the raw materials into the discharge hopper or material bin, resulting in high energy consumption and increased operating costs.

[0003] Currently, companies usually use a reversible dust suppression plate structure under the steel grille at the feeding port to cooperate with the pulse dust collector, and improve the dust removal effect by reducing the ventilation area of ​​the steel grille. Disadvantages: Since the lightweight materials in the raw materials, such as bran, have a bulk density of only 200-300g / L, the lightweight materials cannot rely on their own weight to push the dust suppression plate to flip during feeding. In order to ensure smooth feeding of lightweight materials, a feeding port of about 80mm wide is reserved between adjacent dust suppression plates for feeding lightweight materials. This results in a larger ventilation area of ​​the steel grille and uneven distribution of dust removal airflow. The dust collector can only capture dust on the side of the hopper close to the dust collector, and the dust on the side of the hopper far from the dust collector is seriously scattered.

[0004] Due to the large ventilation area of ​​the feeding grille surface, the dust removal airflow in the hopper is unevenly distributed and the dust removal effect is poor; designing a small ventilation area on the feeding grille surface can improve the dust removal effect of the dust collector, but it cannot solve the problem of poor feeding of light materials, affecting the feeding efficiency.

[0005] Feed mills typically load raw materials into the hopper manually, pouring bags of material into the feed port or using a forklift. The material impacts the hopper's inner wall, creating a large amount of dust that overflows from the feed port and pollutes the environment. Manual feed ports create high dust concentrations that are easily inhaled. Prolonged exposure to dusty environments can seriously affect human health. Utility Model Content

[0006] The first purpose of the utility model is to provide a dust suppression mechanism to solve the technical problem that the dust removal effect and feeding efficiency of the existing feeding port cannot be taken into account at the same time.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions, the dust suppression mechanism includes:

[0008] Installation frame, used to install the dust suppression mechanism on the feeding port;

[0009] Material guide components are arranged on the mounting frame at intervals, and material conveying channels are formed between adjacent material guide components;

[0010] A movable dust shield assembly is movably arranged on the mounting frame, the movable dust shield assembly is located below the material guide assembly, and the movable dust shield assembly can be switched between a feeding state and a non-feeding state to open or close the material conveying channel;

[0011] In the feeding state, under the impact of the material, the adjacent movable dust shield components open to realize material unloading;

[0012] In the non-feeding state, the adjacent movable dust shield components are closed to prevent dust from overflowing from the material conveying channel.

[0013] The utility model provides a material guide assembly in the dust suppression mechanism, which can guide the input material to the movable dust shielding plate assembly. The design angle of the fixed material guide plate can also reduce the residue of granular material and powder on the material guide plate.

[0014] In this dust suppression mechanism, a movable dust shield assembly is provided below the material guide assembly. When the fan is on, the adjacent movable dust shield assembly is closed. It opens only when material flows in, impacted by the material. Once all the material has flowed into the hopper, the movable dust shield assembly returns to its original position due to its own gravity, limiting dust circulation within the hopper and reducing the leakage of dust particles within the hopper, achieving excellent dust suppression.

[0015] In order to solve the technical problem of how to realize the movable dust shield assembly, the utility model adopts the following technical solution. The movable dust shield assembly is an asymmetric structure, including:

[0016] A rotating shaft, both ends of which are rotatably mounted on the mounting frame;

[0017] An L-shaped mounting seat is provided on the rotating shaft;

[0018] A dust shield is provided on a first side of the L-shaped mounting seat via a first connecting member;

[0019] The counterweight plate is arranged on the second side of the L-shaped mounting seat via a second connecting member; the counterweight plate is vertically arranged between the dust shield plate.

[0020] The movable dust shield assembly in the dust suppression mechanism of the utility model is designed to be L-shaped to avoid collision interference when rotating and opening; the movable dust shield assembly adopts an L-shaped asymmetric design, and the center of gravity is close to the rotation axis for easier rotation; dust-proof bearings are used on the shaft ends on both sides of the movable dust shield assembly to further reduce friction resistance during rotation, ensuring smooth discharge of lightweight materials and not prone to blockage.

[0021] To address the technical issue of dust shields being prone to deformation during use, the present invention employs the following technical solution: a dust suppression mechanism in which a pressure plate is provided above the mounting end of the dust shield to compress the dust shield and reduce its deformation. The pressure plate is used to compress the dust shield, and the long pressure plate is in surface contact, which can reduce deformation of the dust shield.

[0022] To solve the technical problem of how to rotatably support the rotating shaft on the mounting frame, the present invention employs the following technical solution: separate retaining rings are disposed on the inner side of the mounting frame, each containing a bearing to support the rotating shaft. This separate retaining ring can be welded to the lower half of one side to facilitate installation and subsequent maintenance of the movable dust shield assembly.

[0023] The bearings are preferably double-sided rubber cover sealed deep groove ball bearings, the main function of which is to reduce the friction of the movable dust shield assembly during rotation, effectively prevent dust without lubrication, and reduce the moment of inertia to make the object easier to rotate, ensuring smooth feeding of lightweight materials. Compared with the sliding friction with the original pin shaft, there is no risk of wear and it is not easy to get stuck.

[0024] To address the technical issue of smooth rotation of the movable dust shield assembly, the present invention employs the following technical solution: the width of the dust shield is greater than the width of the counterweight plate. Compared to bilaterally symmetrical structures, the present movable dust shield assembly is L-shaped, with the center of gravity closer to the axis of rotation, making it easier to rotate. This L-shaped structure ensures that adjacent dust shields do not interfere with each other during rotation, ensuring smooth feeding and preventing material jamming.

[0025] In order to solve the technical problem of the material guide component, the utility model adopts the following technical solution, and the material guide component includes:

[0026] A first material guide plate is located at both ends of the material guide assembly; the first material guide plate includes an inclined portion and a vertical bending portion;

[0027] The second guide plate is located in the middle of the guide assembly; the second guide plate is in an inverted V shape and includes two symmetrically arranged first guide plates. The utility model designs the guide assembly into two structures, effectively preventing dust from overflowing near the end plate.

[0028] In order to solve the technical problem of how to realize the installation frame, the utility model adopts the following technical solution: the installation frame is a square structure, including two side plates and two end plates;

[0029] A connecting plate is provided on the outside of the side plate to mount the mounting frame on the feeding port of the hopper. The utility model sets the connecting plate to, firstly, mount the mounting frame on the feeding port of the hopper; secondly, the area where the connecting plate is located forms an air supply port, which, on the one hand, can evenly distribute the dust removal airflow in the hopper, ensuring good dust suppression effect in all areas of the grille surface; on the other hand, the air supply port can continuously capture dust in the feeding area during the feeding process, thereby continuously reducing the dust concentration at the feeding station.

[0030] The second object of the present utility model is to provide a hopper, comprising a feeding port, wherein the feeding port is provided with any of the above-mentioned dust suppression mechanisms; and an air supply port is formed between the dust suppression mechanism and the feeding port.

[0031] The utility model provides a dust suppression mechanism inside the artificial hopper, so that the dust removal airflow is evenly distributed, so that the dust raised by the hopper can be completely captured by the dust collector, and the dust inside the hopper cannot be scattered into the operating environment of the feeder, which can reduce the dust concentration at the feeding station.

[0032] The dust suppression mechanism of the utility model and three sides of the hopper are provided with air supply ports, which can capture the dust in the operating environment of the feeder during the manual feeding process, thereby continuously reducing the dust concentration at the feeding station.

[0033] To address the technical issue of dust from inside the hopper spilling into the feeding environment, the present invention employs the following technical solution: a grille assembly and a dust removal port are provided on the feeding port, the grille assembly being located above the dust suppression mechanism; the dust removal port being located to one side of the grille assembly and the dust suppression mechanism. The dust suppression mechanism is located inside the hopper, just below the grille assembly. This reduces residual material after feeding and prevents dust from spilling into the feeding environment.

[0034] In order to solve the technical problem of high dust concentration at the feeding station, the utility model adopts the following technical solution: a wind shield is provided at the connection between the side plate and the end plate of the mounting frame near the dust removal port, and the wind shield is connected to the corresponding feeding port. The wind shield is used to prevent the dust removal airflow from concentrating on the side close to the dust removal port, so that the dust removal airflow is evenly distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a working state diagram of the hopper of the utility model;

[0036] Figure 2 This is the axonometric drawing of the hopper of the utility model;

[0037] Figure 3 This is an axonometric drawing of the utility model hopper with the steel grid assembly hidden;

[0038] Figure 4 This is a cross-sectional view of the hopper of the utility model Figure 1 ;

[0039] Figure 5 This is a cross-sectional view of the hopper of the utility model Figure 2 ;

[0040] Figure 6 This is an axonometric diagram of the dust suppression mechanism of the utility model;

[0041] Figure 7 This is a cross-sectional view of the dust suppression mechanism of the utility model in a closed state;

[0042] Figure 8 This is a cross-sectional view of the installation of the movable dust shield assembly in the dust suppression mechanism of the utility model;

[0043] Figure 9 This is a schematic diagram of the welding of the separate type fixing ring in the dust suppression mechanism of the utility model;

[0044] Figure 10 This is a cross-sectional view of the dust suppression mechanism of the utility model in the open state;

[0045] Figure 11 This is an axonometric drawing of the movable dust shield assembly of the utility model;

[0046] Figure 12 This is a front view of the movable dust shield assembly of the utility model;

[0047] In the picture:

[0048] 100 hopper; 101 feeding port;

[0049] 200 grille components;

[0050] 300 dust suppression mechanism;

[0051] 310 mounting frame; 311 side plate; 312 end plate; 313 connecting plate;

[0052] 320 material guide assembly; 321 first material guide plate; 3211 inclined portion; 3212 vertical portion; 322 second material guide plate;

[0053] 330 movable dust shield assembly; 331 rotating shaft; 3310 shaft sleeve; 332 L-shaped mounting seat; 333 dust shield plate; 334 counterweight plate; 335 pressure plate; 336 split fixing ring; 337 bearing; 338 first connecting member; 339 second connecting member;

[0054] 340 air supply vent; 341 wind shield;

[0055] 400 dust removal port;

[0056] 500 dust removal equipment;

[0057] 600 scraper conveyor equipment. DETAILED DESCRIPTION

[0058] Example 1

[0059] like Figure 6-12 As shown, the dust suppression mechanism 300 includes a mounting frame 310 , a material guide assembly 320 , and a movable dust shield assembly 330 .

[0060] like Figure 6 As shown, the mounting frame 310 is used to install the dust suppression mechanism 300 on the feeding port. In one embodiment, the mounting frame 310 is a square structure, including two side panels 311 and two end panels 312. The side panels 311 and the end panels 312 can be welded together, or they can be bent and formed and then welded. A connecting plate 313 is provided on the outer side of the side panel 311, which is used to set the mounting frame on the feeding port of the hopper. The connecting plate 313 is welded to the side panel 311. The connecting plate 313 is vertically arranged between the side panel 311. In one embodiment, the number of the connecting plates 313 is 3. The 3 connecting plates 313 are evenly distributed on the side panel 311. The mounting frame 310 is formed by welding the side panels 311, the end panels 312, and the connecting plates 313. Specifically, the height of the connecting plate 313 is less than the height of the side panels and the end panels of the mounting frame 310.

[0061] like Figure 7 、 Figure 10 As shown, the material guide assemblies 320 are spaced apart on the mounting frame 310, and adjacent material guide assemblies 320 are spaced apart to form a material conveying channel. The fixed material guide plate 8 and the fixed material guide plate 9 are welded to the side plate 6 to guide the material to the movable dust shield assembly 10.

[0062] In one embodiment, the material guide assembly 320 includes a first material guide plate 321 and a second material guide plate 322. The first material guide plate 321 is located at both ends of the material guide assembly 320. The first material guide plate 321 includes an inclined portion 3211 and a vertical portion 3212. The first material guide plate 321 is welded to the two end plates 312 of the mounting frame 310.

[0063] The second material guide plate 322 is located in the middle of the material guide assembly 320. Both ends of the second material guide plate 322 are welded to the two side plates 311 of the installation frame 310.

[0064] The second material guiding plate 322 is in an inverted V shape and includes two symmetrically arranged first material guiding plates 321 .

[0065] like Figure 7-12As shown, the movable dust shield assembly 330 is movably set on the mounting frame 310, and the movable dust shield assembly 330 is located below the material guide assembly 320. The movable dust shield plate assembly 330 can be switched between the feeding state and the non-feeding state to open or close the material conveying channel.

[0066] The movable dust shield assembly 330 has an asymmetric structure and includes a rotating shaft 331 , an L-shaped mounting seat 332 , a dust shield plate 333 , and a counterweight plate 334 .

[0067] The two ends of the rotating shaft 331 are rotatably mounted on the mounting frame 310. Specifically, separate fixing rings 336 are respectively provided on the inner side of the mounting frame 310, and bearings 337 are provided in the separate fixing rings 336 to support the rotating shaft 331. Specifically, the bearings 337 are preferably double-sided rubber cover sealed deep groove ball bearings. Double-sided rubber cover sealed deep groove ball bearings are installed on the shaft end of the movable dust shield assembly and are assembled on the dust suppression mechanism through separate fixing rings. The separate fixing ring 336 can lock the lower half ring on one side and weld it to facilitate the installation and subsequent maintenance of the movable dust shield assembly 310. The locking screw of the separate fixing ring 336 is screwed in from bottom to top. The main function of the double-sided rubber cover sealed deep groove ball bearing is to reduce the friction force of the movable dust shield assembly 10 during rotation, effectively prevent dust without lubrication, and can reduce the moment of inertia to make the object easier to rotate, ensuring smooth discharge of lightweight materials. Compared with the sliding friction of the original pin shaft, there is no risk of wear and it is not easy to get stuck.

[0068] The L-shaped mounting seat 332 is disposed on the rotating shaft 331. The L-shaped mounting seat 332 includes a first mounting plate 3321 and a second mounting plate 3322. Shaft sleeves 3310 are disposed at both ends of the L-shaped mounting seat 332, and the rotating shaft 331 is mounted in the shaft sleeves 3310.

[0069] The dust shield 333 is arranged on the first mounting plate 3321 via the first connecting member 338. Specifically, the dust shield 333 is made of high molecular weight polyethylene with a material density of 0.941 to 0.960 g / cm³. It is non-toxic and odorless, has good chemical corrosion resistance and mechanical properties, reduces the overall mass of the movable dust shield assembly 330, and can reduce the moment of inertia. Several mounting holes are machined on the mounting end of the dust shield 333. Several mounting holes are machined on the first mounting plate 3321. The mounting holes on the dust shield 333 correspond to the mounting holes on the first mounting plate 3321. The first connecting member 338 is preferably a bolt or a nut.

[0070] The counterweight plate 334 is arranged on the second side of the L-shaped mounting seat 332 via the second connecting member 339. Several mounting holes are processed on the second mounting plate 3322. The mounting holes on the counterweight plate 334 correspond to the mounting holes on the second mounting plate 3322. The second connecting member 339 is preferably a bolt or a nut. The counterweight plate 334 is vertically arranged between the dust shield 333. The main function of the counterweight plate 334 is to reasonably distribute the weight and adjust the center of gravity of the structure. When the structure is subjected to external force, the center of gravity will change. In order to maintain balance, the structure will automatically adjust the center of gravity so that the center of gravity returns to its initial position.

[0071] The dust shield side of the L-shaped mounting base 332 is bolted together by a dust shield plate 333 and a pressure plate 335, while the counterweight side is bolted together by a counterweight plate 334. The movable dust shield assembly 330 is L-shaped overall. Compared to a bilaterally symmetrical structure, this structure has a center of gravity closer to the axis of rotation, making it easier to rotate. This L-shaped structure ensures that adjacent dust suppression plates do not interfere with each other during rotation, ensuring smooth material feeding and preventing jamming.

[0072] In one embodiment, a pressure plate 335 is provided above the mounting end of the dust shield 333 to compress the dust shield 333 and reduce deformation of the dust shield. The pressure plate 335 is used to compress the dust shield 333. The long pressure plate is in surface contact, which can reduce deformation of the dust shield 333.

[0073] In one embodiment, the width of the dust shield 333 is greater than the width of the counterweight plate 334 .

[0074] In the feeding state, under the impact of the material, the adjacent movable dust shield assembly 330 opens to realize the unloading;

[0075] In the non-feeding state, the adjacent movable dust shielding assembly 330 is closed to prevent dust from overflowing from the material conveying channel.

[0076] like Figure 8 、 Figure 9 As shown in the figure, in the dust suppression mechanism, the initial position of the movable dust shield assembly is limited by the fixed material guide plate and the vertical part of the fixed material guide plate, ensuring that the dust shield side is in a closed state at a 45° angle to the feeding surface. At this time, the gap between adjacent movable dust shield assemblies 10 is only 5mm, ensuring that the entire dust suppression mechanism has a small ventilation area. During the feeding process, if Figure 10 As shown, the dust shield assembly will open only when the material flows in. After all the material has flowed into the hopper, the movable dust shield assembly can return to the closed state by its own gravity.

[0077] Example 2

[0078] like Figure 1As shown, the dust removal device 500 is connected above the hopper 100, and the scraper conveyor device 600 is connected below the hopper 100. The hopper 100 includes a feeding port 101, on which the dust suppression mechanism 300 of any one of the embodiments 1 is installed; and an air supply port 340 is formed between the mounting frame 310 and the feeding port.

[0079] like Figure 2 、 Figure 3 As shown, a grille assembly 200 and a dust removal port 400 are provided on the feeding port 101. The grille assembly 200 is located above the dust suppression mechanism 300. The dust removal port 102 is located on one side of the grille assembly and the dust suppression mechanism. The grille assembly 200 is made of steel.

[0080] like Figure 4 、 Figure 5 As shown, the dust suppression mechanism 300 is located inside the hopper 100, closely attached to the grille assembly 200 and welded to the hopper 100. It prevents dust from escaping into the feeding environment. The mounting frame 310 of the dust suppression mechanism 300 is concealed beneath the grille assembly 200 to minimize residual material after feeding.

[0081] In one embodiment, a windshield 341 is provided at the connection between the side panel 311 and the end panel 312 of the mounting frame 310 near the dust removal port 400. The windshield 341 is connected to the corresponding feeding port. The windshield 341 is used to prevent the dust removal airflow from concentrating on the side near the dust removal port, thereby evenly distributing the dust removal airflow. The windshield 341 is located on the end face of the dust suppression mechanism 300 on the dust removal suction side. The windshield 341 is welded to the dust suppression mechanism 300 and the hopper 100 to prevent the dust removal airflow from concentrating on the side near the dust collector, thereby evenly distributing the dust removal airflow. Specifically, the height of the windshield 341 is the same as the height of the side panels and end panels of the mounting frame 310.

[0082] Air supply ports are provided on three sides of the dust suppression mechanism 300 and the hopper 100. Firstly, they can make the dust removal airflow in the hopper evenly distributed, ensuring that each area of ​​the grille surface has a good dust suppression effect when feeding. Secondly, the air supply ports can capture the dust in the feeding area environment during the feeding process, thereby continuously reducing the dust concentration at the feeding station.

[0083] Other application scenarios of the utility model: ① If the customer is not satisfied with the dust suppression effect of the existing feeding port, the dust suppression mechanism 300 can be directly used to modify the feeding port; ② In the initial design stage, it can also be made into an integrated type with the hopper to become a hopper dust suppression solution.

[0084] The utility model solves the problem of poor dust removal effect and dust inside the hopper overflowing into the feeding operation environment; the utility model also solves the problem of poor discharge of light materials.

Claims

1. Dust suppression mechanism, characterized by: include: Installation frame, used to install the dust suppression mechanism on the feeding port; Material guide components are arranged on the mounting frame at intervals, and material conveying channels are formed between adjacent material guide components; A movable dust shield assembly is movably arranged on the mounting frame, the movable dust shield assembly is located below the material guide assembly, and the movable dust shield assembly can be switched between a feeding state and a non-feeding state to open or close the material conveying channel; In the feeding state, under the impact of the material, the adjacent movable dust shield components open to realize material unloading; In the non-feeding state, the adjacent movable dust shield components are closed to prevent dust from overflowing from the material conveying channel.

2. The dust suppression mechanism according to claim 1, characterized in that: The movable dust shield assembly has an asymmetric structure and includes: A rotating shaft, both ends of which are rotatably mounted on the mounting frame; An L-shaped mounting seat is provided on the rotating shaft; A dust shield is provided on a first side of the L-shaped mounting seat via a first connecting member; The counterweight plate is arranged on the second side of the L-shaped mounting seat via a second connecting member; the counterweight plate is vertically arranged between the dust shield plate.

3. The dust suppression mechanism according to claim 2, characterized in that: A pressing plate is provided above the mounting end of the dust shield plate to press the dust shield plate and reduce deformation of the dust shield plate.

4. The dust suppression mechanism according to claim 2, characterized in that: Separate fixing rings are respectively provided on the inner sides of the installation frames, and bearings are provided inside the separate fixing rings for supporting the rotating shaft.

5. The dust suppression mechanism according to claim 2, characterized in that: The width of the dust shield is greater than the width of the counterweight plate.

6. The dust suppression mechanism according to claim 1, characterized in that: The material guide assembly comprises: A first material guide plate is located at both ends of the material guide assembly; the first material guide plate includes an inclined portion and a vertical bending portion; The second material guide plate is located in the middle of the material guide assembly; the second material guide plate is in an inverted V shape, and the second material guide plate includes two symmetrically arranged first material guide plates.

7. The dust suppression mechanism according to claim 1, characterized in that: The mounting frame is a square structure, comprising two side panels and two end panels; A connecting plate is provided on the outer side of the side plate, which is used to set the mounting frame on the feeding port of the hopper.

8. A hopper, including a feeding port, characterized in that: The feeding port is provided with the dust suppression mechanism according to any one of claims 1 to 7; and an air supply port is formed between the dust suppression mechanism and the feeding port.

9. The hopper according to claim 8, characterized in that: A grille component and a dust removal port are provided on the feeding port, and the grille component is located above the dust suppression mechanism; the dust removal port is located on one side of the grille component and the dust suppression mechanism.

10. The hopper according to claim 9, characterized in that: A windshield is provided at the connection between the side plate and the end plate of the mounting frame near the dust removal port, and the windshield is connected to the corresponding feeding port. The windshield is used to prevent the dust removal airflow from concentrating on the side close to the dust removal port, so that the dust removal airflow is evenly distributed.

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