Dust removal device for wharf open-type large funnel
By setting up multiple vacuum covers around the open large funnel of the dock, and combining the filter bag and pulse cleaning mechanism in the dust collector housing, the problem of poor dust collection effect of the existing dust removal device is solved, achieving all-round dust collection and efficient dust removal.
Patent Information
- Application Number
- CN202421421023.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In the existing dust removal device for funnels, the dust collecting cover is located above the large funnel and cannot completely cover the large funnel, resulting in poor dust collection effect and the inability to capture the dust generated during the funnel operation in all aspects.
A dust removal device for an open large funnel on the dock was designed, and multiple vacuum covers were arranged around the funnel. The vacuum cover was connected to the air inlet of the dust collector shell. The filter bag and a pulse ash cleaning mechanism were installed in the dust collector shell, and all-round dust collection and dust cleaning mechanism were achieved through the dust collector fan and pulse ash cleaning mechanism.
The all-round dust collection of grain dust around the funnel is achieved, and the dust collection effect is improved. The grain dust is effectively blocked on the filter bag. The pulse cleaning mechanism is timed or pressure differential to ensure the continuous operation of the dust removal device and efficient dust removal.
Smart Images
Figure CN222885557U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hopper dust removal, in particular to a dust removal device for an open large hopper at a wharf. Background Technique
[0002] During the grain loading and unloading process at the wharf, it is necessary for the ship unloader on the shore side of the wharf to grab the grain cargo inside the cabin through a grab bucket, and transport the grain cargo to the belt conveyor of the warehousing process through an open large hopper on the shore, or directly carry out the operations of packing into boxes or loading trucks for market delivery of the grain cargo through the large hopper. When the ship unloader moves the grab bucket above the large hopper and starts unloading, a large amount of grain cargo enters the internal space of the large hopper, impacts with the air inside the large hopper, forms a positive pressure inside the large hopper, and generates an upward driving force on the grain crops entering the large hopper. During this process, some grain particles will diffuse around along the inner wall of the large hopper under the action of the driving force, causing serious dust pollution, which is not conducive to the environmental protection of the port and the construction of a green port.
[0003] The traditional treatment method is that after the ship unloading process is completed and the operation on the shore stops, the post workers use brooms for cleaning, which increases the workload of the workers and has very low efficiency at the same time.
[0004] At present, there are dust removal devices for hoppers. The dust removal device in the prior art includes a dust collection hood. The dust collection hood is located above the large hopper and is used to capture the dust generated during the operation of the hopper. The dust collection hood is connected to a dust filtration system through a pipeline, and the dust filtration system is connected to a fan, and the fan provides suction. However, the dust collection hood in the dust removal device for hoppers in the prior art is located above the large hopper. In order not to affect the feeding, the dust collection hood cannot completely cover the large hopper, so it cannot collect dust in all directions, and the dust collection effect is poor. Summary of the Utility Model
[0005] In order to solve the technical problem that the dust collection hood in the dust removal device for hoppers in the prior art is located above the large hopper. In order not to affect the feeding, the dust collection hood cannot completely cover the large hopper, so it cannot collect dust in all directions, and the dust collection effect is poor, the utility model provides a dust removal device for an open large hopper at a wharf.
[0006] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0007] A dust removal device for an open large funnel at a dock, comprising a dust removal mechanism. The dust removal mechanism includes a dust collector housing, which is provided with an air inlet and an air outlet. The air inlet of the dust collector housing is simultaneously communicated with the openings at one ends of a plurality of dust suction hoods, and the openings at the other ends of the plurality of dust suction hoods all face the opening of the funnel. The plurality of dust suction hoods are arranged around the opening of the funnel; the air outlet of the dust collector housing is communicated with the air suction port of a dust removal fan; a filter bag is arranged inside the dust collector housing, and the filter bag is located between the air inlet and the air outlet. When the dust removal fan operates, the grain dust around the funnel can enter the air chamber in the dust collector housing from the plurality of dust suction hoods. The plurality of dust suction hoods can collect dust in all directions around the funnel, improving the dust collection effect. The gas containing grain dust is sucked into the filter bag in the air chamber under the pressure difference generated by the dust removal fan. When the gas passes through the filter bag, it is discharged from the air discharge port of the dust removal fan, while the grain dust will be retained on the surface of the air inlet side of the filter bag.
[0008] As a preferred implementation manner of a dust removal device for an open large funnel at a dock, a pulse cleaning mechanism is installed on the dust collector housing. The pulse cleaning mechanism includes a compressed air package, which is connected to a blowpipe through a pulse valve. The blowpipe is located inside the dust collector housing, and the blowpipe is provided with air jet ports, and the air jet ports face the air outlet side of the filter bag; the pulse valve is electrically connected to a pulse controller. The pulse controller controls the opening and closing of the pulse valve. When the pulse valve is opened, the compressed air in the compressed air package is ejected from the air jet ports after passing through the pulse valve and the blowpipe. The high-speed ejected gas can impact the filter bag in a direction opposite to the filtering air flow, blowing the dust accumulated on the air inlet side of the filter bag into the ash hopper to complete the cleaning.
[0009] As a preferred implementation manner of a dust removal device for an open large funnel at a dock, a first air pressure sensor and a second air pressure sensor are installed inside the dust collector housing. The first air pressure sensor and the second air pressure sensor are electrically connected to the pulse controller. The first air pressure sensor is located on the air inlet side of the filter bag, and the second air pressure sensor is located on the air outlet side of the filter bag. There are two ways to clean the filter bag by the pulse cleaning mechanism. The first is timed cleaning. The pulse controller controls the timed opening of the pulse valve. When the pulse valve is opened, the compressed air in the compressed air package is ejected from the air jet ports after passing through the pulse valve and the blowpipe. The high-speed ejected gas can impact the filter bag in a direction opposite to the filtering air flow, blowing the dust accumulated on the air inlet side of the filter bag into the ash hopper to complete the cleaning. The second is differential pressure cleaning. The pulse controller receives the signals from the first air pressure sensor and the second air pressure sensor. If the air pressure difference between the air pressure data detected by the first air pressure sensor and the second air pressure sensor exceeds the set value, the pulse controller will control the pulse valve to open, and the compressed air in the compressed air package is ejected from the air jet ports, blowing the dust accumulated on the air inlet side of the filter bag into the ash hopper to complete the cleaning.
[0010] As a preferred implementation of a dust removal device for an open large funnel at a wharf, a plurality of independent air chambers are provided inside the dust collector housing, and adjacent air chambers are separated by partition plates; filter bags are provided in each air chamber, and an air outlet channel is formed on one side of each air chamber facing the air outlet, and the air outlet channel is communicated with the air outlet. An air outlet valve is provided in the air outlet channel, and the air outlet valve is electrically connected to the pulse controller; one side of each air chamber facing the air inlet is communicated with the air inlet; a pulse cleaning mechanism is provided in each air chamber, and the jet orifice of the blowpipe in each pulse cleaning mechanism faces the air outlet side of the filter bag in the corresponding air chamber. The pulse cleaning mechanisms of different air chambers clean the ash alternately, which can ensure continuous dust removal of the dust removal device and improve the dust removal effect and efficiency. When each air chamber is cleaned, the corresponding pulse controller will control the air outlet valve at the upper part of the air chamber to close, closing the communication channel between the upper part of the air chamber and the suction port of the dust removal fan, avoiding the problem of weakened cleaning effect caused by the counterflow of the upper and lower airflows in the air chamber.
[0011] As a preferred implementation of a dust removal device for an open large funnel at a wharf, a dust hopper is connected to the bottom of the dust collector housing, and the dust hopper is located on the air inlet side of the filter bag; the bottom of the dust hopper is inverted conical, and a dust discharge port is opened at the bottom end of the dust hopper, and a dust discharge valve is installed in the dust discharge port. It is convenient to collect grain dust.
[0012] As a preferred implementation of a dust removal device for an open large funnel at a wharf, the size of the opening of the suction hood facing the upper open mouth of the funnel is larger than the size of the opening of the suction hood communicated with the air inlet. The dust collection area of the suction hood is expanded, and the dust collection effect is effectively improved.
[0013] The beneficial effects of the present utility model include:
[0014] When the dust removal fan operates, the grain dust around the funnel can enter the air chambers in the dust collector housing from several suction hoods. The several suction hoods can perform all-round dust collection around the funnel, improving the dust collection effect. The gas containing grain dust is sucked into the filter bags in the air chambers under the pressure difference generated by the dust removal fan. When the gas passes through the filter bags, it is discharged from the exhaust port of the dust removal fan, while the grain dust will be retained on the surface of the air inlet side of the filter bags. The filter bags are cleaned, and after cleaning, the grain dust will fall into the dust hopper, which is convenient for centralized collection and cleaning. Description of the Drawings
[0015] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required to be used in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1This is a front structural schematic diagram of a dust removal device for an open large funnel at a dock in a specific embodiment of the present utility model.
[0017] List of components and reference numerals:
[0018] 1. Dust collector housing; 2. Dust suction hood; 3. Dust removal fan; 4. Ash hopper; 5. Air outlet. Specific embodiment
[0019] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in this specific embodiment. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.
[0020] Refer to Figure 1 , this embodiment provides a dust removal device for an open large funnel at a dock, including a dust removal mechanism. The dust removal mechanism includes a dust collector housing 1, and the dust collector housing 1 is provided with an air inlet and an air outlet. The air inlet of the dust collector housing 1 is simultaneously communicated with one end opening of a plurality of dust suction hoods 2, and the openings at the other ends of the plurality of dust suction hoods 2 all face the upper open end of the funnel. The plurality of dust suction hoods 2 are arranged around the open end of the funnel, and the size of the opening of the dust suction hood 2 facing the upper open end of the funnel is larger than the size of the opening of the dust suction hood 2 communicated with the air inlet. The air outlet of the dust collector housing 1 is communicated with the air suction port of the dust removal fan 3, and the dust removal fan 3 is provided with an air outlet 5; a filter bag is arranged inside the dust collector housing 1, and the filter bag is located between the air inlet and the air outlet; the bottom of the dust collector housing 1 is connected with an ash hopper 4, the ash hopper 4 is located on the air inlet side of the filter bag, the bottom of the ash hopper 4 is in an inverted cone shape, a discharge opening is provided at the bottom end of the ash hopper 4, and a discharge valve is installed in the discharge opening.
[0021] A plurality of independent air chambers are arranged inside the dust collector housing 1, and adjacent air chambers are separated by partition plates; a filter bag is arranged in each air chamber, an air outlet channel is provided on the side of each air chamber facing the air outlet, the air outlet channel is communicated with the air outlet, and an air outlet valve is arranged in the air outlet channel; the side of each air chamber facing the air inlet is communicated with the air inlet; a pulse cleaning mechanism is arranged in each air chamber. The pulse cleaning mechanism includes a compressed air package, the source of the compressed air in the compressed air package is an air compressor, the compressed air package is connected with a blowpipe through a pulse valve, the blowpipe is located inside the air chamber, the blowpipe is provided with air jet ports, and the air jet ports face the air outlet side of the filter bag in the corresponding air chamber; the pulse valve is electrically connected with a pulse controller; the air outlet valve is electrically connected with the pulse controller.
[0022] A first air pressure sensor and a second air pressure sensor are installed in each air chamber. The first air pressure sensor and the second air pressure sensor are electrically connected to a pulse controller. The first air pressure sensor is located on the air inlet side of the filter bag, and the second air pressure sensor is located on the air outlet side of the filter bag.
[0023] The filter bag in this embodiment is woven from a composite fabric made of a variety of fibers and filter membranes, and contains a metal keel support. The gas containing grain dust is sucked into the filter bag under the pressure difference generated by the dust removal fan 3. When the gas passes through the filter bag, the dust will be retained on the surface of the air inlet side of the filter bag.
[0024] The working principle of this embodiment is as follows:
[0025] When the dust removal fan 3 operates, the grain dust around the funnel can enter the air chamber in the dust collector housing 1 from several dust suction covers 2. The gas containing grain dust is sucked into the filter bag in the air chamber under the pressure difference generated by the dust removal fan 3. After the gas passes through the filter bag, it is discharged from the air outlet 5 of the dust removal fan 3, while the grain dust will be retained on the surface of the air inlet side of the filter bag and is cleaned by the pulse cleaning mechanism. After cleaning, the grain dust will fall into the ash hopper 4 for convenient centralized collection and cleaning. The pulse cleaning mechanisms of different air chambers clean alternately, which can ensure continuous dust removal of the dust removal device and improve the dust removal effect and efficiency. When each air chamber is cleaned, the corresponding pulse controller will control the outlet valve at the upper part of the air chamber to close, closing the communication channel between the upper part of the air chamber and the suction port of the dust removal fan 3 to avoid the problem of weakened cleaning effect caused by the counterflow of the upper and lower airflows in the air chamber.
[0026] There are two ways of cleaning for the pulse cleaning mechanism. The first is timed cleaning. The pulse controller controls the timed opening of the pulse valve. When the pulse valve opens, the compressed air in the compressed air package is ejected from the jet port after passing through the pulse valve and the blowing pipe. The high-speed ejected gas can impact the filter bag in the direction opposite to the filtering airflow, blowing the dust accumulated on the air inlet side of the filter bag into the ash hopper 4 to complete the cleaning. The second is differential pressure cleaning. The pulse controller receives the signals of the first air pressure sensor and the second air pressure sensor. If the pressure difference between the pressure data detected by the first air pressure sensor and the second air pressure sensor exceeds the set value, the pulse controller will control the pulse valve to open, and the compressed air in the compressed air package is ejected from the jet port, blowing the dust accumulated on the air inlet side of the filter bag into the ash hopper 4 to complete the cleaning.
[0027] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. A dust removal device for a large open hopper at a dock, comprising a dust removal mechanism, characterized in that: The dust removal mechanism comprises a dust collector housing (1), the dust collector housing (1) being provided with an air inlet and an air outlet, the air inlet of the dust collector housing (1) being connected to one end opening of a plurality of dust hoods (2), the other end openings of the plurality of dust hoods (2) all facing the opening of the funnel, and the plurality of dust hoods (2) being arranged around the opening of the funnel; the air outlet of the dust collector housing being connected to the air exhaust port of a dust removal fan (3); and a filter bag being arranged inside the dust collector housing (1), the filter bag being located between the air inlet and the air outlet.
2. A dust removal device for an open large funnel at a dock according to claim 1, characterized in that: The dust collector housing (1) is equipped with a pulse cleaning mechanism, which includes a compressed air bag, the compressed air bag is connected to a blow pipe via a pulse valve, the blow pipe is located in the dust collector housing (1), the blow pipe is provided with an air jet, and the air jet is directed toward the air outlet side of the filter bag; the pulse valve is electrically connected to a pulse controller.
3. A dust removal device for a large open hopper at a dock according to claim 2, characterized in that: A first air pressure sensor and a second air pressure sensor are installed in the dust collector housing (1); the first air pressure sensor and the second air pressure sensor are electrically connected to the pulse controller; the first air pressure sensor is located on the air inlet side of the filter bag, and the second air pressure sensor is located on the air outlet side of the filter bag.
4. A dust removal device for a large open hopper at a dock according to claim 2, characterized in that: A plurality of independent air chambers are arranged in a dust collector housing (1), and adjacent air chambers are separated by partitions; a filter bag is arranged in each air chamber, and an air outlet passage is opened on the side of each air chamber facing the air outlet, the air outlet passage is connected with the air outlet, an air outlet valve is arranged in the air outlet passage, and the air outlet valve is electrically connected with a pulse controller; the side of each air chamber facing the air inlet is connected with the air inlet; a pulse cleaning mechanism is arranged in each air chamber, and the air jet of the blowing pipe in each pulse cleaning mechanism faces the air outlet side of the filter bag in the corresponding air chamber.
5. The dust removal device for a large open hopper at a dock according to claim 1, characterized in that: The bottom of the dust collector housing (1) is connected to an ash hopper (4), which is located on the air inlet side of the filter bag; the bottom of the ash hopper (4) is in an inverted cone shape, and an ash discharge port is provided at the bottom end of the ash hopper (4), in which an ash discharge valve is installed.
6. A dust removal device for a large open hopper at a dock according to claim 1, characterized in that: The size of the opening of the dust hood (2) that is open toward the upper part of the funnel is larger than the size of the opening of the dust hood (2) that is connected to the air inlet.