Multifunctional circulating pressure relief device

Abstract

The utility model provides a multifunctional circulating pressure relief device which specifically comprises a material guide groove, a sealing cover plate installed on the upper surface of the material guide groove, a pressure relief box installed on the upper surface of the sealing cover plate, a quick release mechanism arranged on the front face of the pressure relief box, an installation groove formed in the pressure relief box, and an installation frame installed on the inner wall of the pressure relief box. And a draft fan is mounted on the bottom surface of the mounting frame. According to the utility model, the sealing cover plate and the pressure relief box are arranged on the guide chute, so that high-pressure airflow with dust in the guide chute is smoothly guided into the pressure relief box through the dust outlet, the suction force is generated by starting the draft fan, the flowing of the airflow with dust is accelerated, the pressure of the airflow in the guide chute is assisted to be released, and the pressure is reduced through double filtration; and finally, the air outlet is guided to the outside to complete pressure relief, so that potential safety hazards such as dust explosion are effectively reduced, meanwhile, by arranging the quick release mechanism, quick replacement or cleaning of the dust collection filter element is facilitated, and the production efficiency is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of coal conveying technology, specifically relating to a multifunctional circulating pressure relief device. Background Technology

[0002] In coal-related production scenarios such as thermal power plants, belt conveyors are one of the core transportation equipment in coal conveying systems, undertaking the crucial task of continuously and stably supplying coal to boilers. During operation, coal flows from the coal chute onto the belt and then into the feed chute. However, due to the high velocity and large flow rate of the coal, the impact of the coal flow on the feed chute can cause numerous problems. When the coal flow impacts the feed chute, the air inside is compressed, resulting in high dust concentrations and airflow pressure. A large amount of dust accumulates in the feed chute and is difficult to discharge in time, leading to severe dust overflow. This not only pollutes the surrounding working environment and affects the health of on-site workers, but may also pose safety hazards such as dust explosions.

[0003] Currently, although some measures have been taken to control dust, these measures have certain limitations in practical application. Existing dust control methods are usually insufficient to effectively control dust concentrations below the standards required by environmental protection departments, such as ≤10mg / m³. 3 This approach fails to meet increasingly stringent environmental protection requirements. Furthermore, traditional methods often fail to fundamentally address dust spillage and airflow pressure issues, impacting the operational stability of the coal conveying system and increasing equipment maintenance costs and downtime. Therefore, our company has developed a device that effectively solves the problems of high dust concentration and airflow pressure in the conveyor belt chute of a coal conveying system. This is of great significance for improving the working environment, ensuring personnel health and safety, reducing equipment maintenance costs, and increasing the operational efficiency of the coal conveying system. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a multifunctional circulating pressure relief device.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multifunctional circulating pressure relief device includes a feed trough, a sealing cover plate installed on the upper surface of the feed trough, a pressure relief box installed on the upper surface of the sealing cover plate, a quick-release mechanism provided on the front of the pressure relief box, an installation groove opened inside the pressure relief box, an installation frame installed on the inner wall of the pressure relief box, an exhaust fan installed on the bottom surface of the installation frame, and a dust suction filter element slidably connected to the inner wall of the installation groove.

[0007] As a preferred embodiment of this utility model, the dust extraction filter element is slidably connected to the upper surface of the air outlet, and a filter screen is installed on the inner bottom wall of the pressure relief box.

[0008] As a preferred embodiment of this utility model, an inspection cover is installed on the upper surface of the pressure relief box, and the quick-release mechanism includes a mounting cover installed on the front of the pressure relief box, and a sliding groove is provided inside the mounting cover.

[0009] As a preferred embodiment of this utility model, the inner wall of the chute is slidably connected to a limiting plate, and the limiting plate is slidably connected to the front of the pressure relief box.

[0010] As a preferred embodiment of this utility model, a sliding rod is installed on the bottom surface of the limiting plate, and the sliding rod is slidably connected to the inside of the mounting cover.

[0011] As a preferred embodiment of this utility model, a push-pull rod is installed on the front side of the slide rod.

[0012] As a preferred embodiment of this utility model, two springs are installed on the bottom surface of the limiting plate, and the two springs are installed on the inner bottom wall of the slide groove.

[0013] As a preferred embodiment of this utility model, the inspection cover has a set of air outlet holes inside, and the filter screen has a set of filter holes inside.

[0014] As a preferred embodiment of this utility model, a handle is fixedly connected to the front of the dust filter element.

[0015] As a preferred embodiment of this utility model, a set of support components is installed on the bottom surface of the guide trough, an installation frame plate is installed on the left end of the guide trough, and a discharge port is provided on the right end of the guide trough.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) This utility model installs a sealing cover and a pressure relief box on the material guide trough, so that the high-pressure airflow with dust in the material guide trough can be smoothly introduced into the pressure relief box through the dust outlet. Inside the pressure relief box, the exhaust fan is started to generate suction, which accelerates the flow of dust-laden airflow and assists in the release of air pressure in the material guide trough. After the dust-laden airflow is initially filtered by the filter screen to intercept large dust particles, it is then filtered a second time by the dust suction filter to adsorb residual fine dust particles. Finally, it is guided to the outside through the air outlet of the inspection cover to complete the pressure relief. The whole device effectively reduces the dust concentration and airflow pressure in the material guide trough, and effectively reduces safety hazards such as dust explosion.

[0018] (2) This utility model facilitates the quick replacement or cleaning of the dust filter element through the quick-release mechanism. When the dust filter element needs to be maintained, by pulling the push rod, the slide rod slides inside the mounting cover, overcoming the contraction force of the spring, and the limiting plate moves downward to release the limitation on the dust filter element. The dust filter element can then be easily pulled out for cleaning or replacement. This convenient maintenance method reduces equipment downtime and effectively improves production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the concealed material guide channel and its components of this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the pressure relief box and quick-release mechanism of this utility model after cross-section.

[0022] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a schematic diagram showing the connection between the air outlet and the exhaust fan of this utility model.

[0024] The diagram shows: 1. Feed chute; 2. Sealing cover; 3. Mounting frame; 4. Support assembly; 5. Pressure relief box; 6. Quick release mechanism; 601. Mounting cover; 602. Slide groove; 603. Limiting plate; 604. Spring; 605. Slide rod; 606. Push-pull rod; 7. Mounting slot; 8. Dust collection filter; 9. Handle; 10. Inspection cover; 11. Air outlet; 12. Exhaust fan; 13. Filter screen; 14. Filter hole; 15. Mounting bracket. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0028] Please see Figures 1 to 5 As shown, this utility model embodiment provides a multifunctional circulating pressure relief device, specifically including a feed trough 1, a sealing cover plate 2 installed on the upper surface of the feed trough 1, a pressure relief box 5 installed on the upper surface of the sealing cover plate 2, a dust outlet opened inside the sealing cover plate 2, the specific location of the dust outlet being between the sealing cover plate 2 and the pressure relief box 5, a quick-release mechanism 6 provided on the front of the pressure relief box 5, an installation groove 7 opened inside the pressure relief box 5, and an installation bracket 15 installed on the inner wall of the pressure relief box 5. A fan 12 is installed on the bottom surface of the pressure relief box 5. A dust filter element 8 is slidably connected to the inner wall of the mounting groove 7. The dust filter element 8 is slidably connected to the upper surface of the air outlet 11. A filter screen 13 is installed on the inner bottom wall of the pressure relief box 5. A maintenance cover 10 is installed on the upper surface of the pressure relief box 5. The dust filter element 8 is slidably connected to the bottom surface of the maintenance cover 10. A set of air outlets 11 is opened inside the maintenance cover 10. A set of filter holes 14 is opened inside the filter screen 13. A handle 9 is fixedly connected to the front of the dust filter element 8. A set of support components 4 is installed on the bottom surface of the guide chute 1. A mounting frame plate 3 is installed on the left end of the guide chute 1. A discharge port is set on the right end of the guide chute 1. The pressure relief box 5 and the dust outlet are both located at the discharge port.

[0029] In this embodiment, the feed chute 1 serves as a key channel for coal transportation, receiving the coal flow falling from the coal chute and transporting it to the next stage. A set of support components 4 installed on its bottom surface provides stable support for the feed chute 1, ensuring its stable operation during coal transportation. A mounting frame plate 3 is installed at the left end of the feed chute 1 for easy connection with other equipment, and a discharge port is provided at the right end as the outlet for coal transportation. A sealing cover plate 2 is installed on the upper surface of the feed chute 1, and a dust outlet inside guides the high-pressure airflow containing dust within the feed chute 1 to the pressure relief box 5, serving to seal and guide the airflow, effectively preventing dust from overflowing from the top of the feed chute 1. The pressure relief box 5 is the core processing component of the device, with an internal mounting slot 7 for installing a dust suction filter element 8. A filter screen 13 installed on the inner bottom wall provides preliminary filtration of the dust-laden airflow. A quick-release mechanism 6 on the front facilitates maintenance of the internal components. An inspection cover 10 installed on the upper surface allows for easy opening and maintenance of the interior, and its internal air outlet 11 serves as the discharge channel for the purified airflow. The dust collection filter element 8 is slidably connected to the inner wall of the mounting groove 7, which can perform secondary filtration on the airflow after the initial filtration by the filter screen 13, adsorbing residual fine dust particles and ensuring the cleanliness of the discharged airflow. The handle 9 fixedly connected to its front side facilitates disassembly and installation by the operator.

[0030] Please see Figure 4 As shown, the quick-release mechanism 6 specifically includes a mounting cover 601 installed on the front of the pressure relief box 5. The mounting cover 601 has a sliding groove 602 inside. A limiting plate 603 is slidably connected to the inner wall of the sliding groove 602. The limiting plate 603 is slidably connected to the front of the pressure relief box 5. The limiting plate 603 is used to limit and fix the dust filter element 8 to prevent the dust filter element 8 from sliding out of the mounting groove 7. It is mainly used for quick replacement or cleaning of the dust filter element 8. A sliding rod 605 is installed on the bottom surface of the limiting plate 603. The sliding rod 605 is slidably connected to the inside of the mounting cover 601. A push-pull rod 606 is installed on the front of the sliding rod 605. Two springs 604 are installed on the bottom surface of the limiting plate 603. The two springs 604 are installed on the inner bottom wall of the sliding groove 602.

[0031] Please see Figure 4As shown, in this embodiment, the quick-release mechanism 6 specifically consists of an installation cover 601, a slide groove 602, a limiting plate 603, a spring 604, a slide rod 605, and a push-pull rod 606. It allows for quick disassembly and installation of the dust collection filter element 8 through simple operation, improving equipment maintenance efficiency. In actual installation, first, the support assembly 4 is installed on the bottom surface of the guide chute 1 to ensure its stable placement. Then, the installation frame plate 3 is installed on the left end of the guide chute 1 for connection with other equipment in the coal conveying system. Next, the sealing cover plate 2 is installed on the upper surface of the guide chute 1 to ensure accurate dust outlet positioning. Then, the pressure relief box 5 is installed on the upper surface of the sealing cover plate 2 to ensure smooth airflow. The filter screen 13 is installed on the inner bottom wall of the pressure relief box 5. The dust collection filter element 8 slides into the pressure relief box 5 through the installation groove 7 and is fixed by the limiting plate 603 of the quick-release mechanism 6. Finally, the inspection cover 10 is installed.

[0032] Specifically, in this embodiment, when the device is running, the exhaust fan 12 is activated. When the coal conveying system is working, the coal flow impacts the guide chute 1, generating a high-pressure airflow containing dust. This airflow enters the pressure relief box 5 through the dust outlet of the sealing cover 2, and is filtered sequentially through the filter screen 13 and the dust collection filter element 8 before being discharged through the air outlet 11 of the inspection cover 10. When it is necessary to clean or replace the dust collection filter element 8, the push-pull rod 606 is pulled to overcome the contraction force of the spring 604, causing the limiting plate 603 to move downward, releasing the limitation on the dust collection filter element 8. The handle 9 is then pulled to remove the dust collection filter element 8. The quick-release mechanism 6 enables convenient replacement of the dust collection filter element 8, which, unlike the traditional fixed installation method, effectively improves maintenance efficiency. The double-layer filtration structure significantly improves the dust removal effect, meeting environmental protection requirements.

[0033] In this embodiment, when the device is in operation, in coal conveying scenarios such as thermal power plants, the conveyor belt of the coal conveying system is running. The coal flow falls from the coal drop pipe onto the conveyor belt and enters the feed chute 1. The high-speed and large-volume coal flow impacts the feed chute 1, causing the air inside the feed chute 1 to be compressed, forming a high dust concentration and airflow pressure environment. At this time, the high-pressure airflow carrying dust in the feed chute 1 enters the pressure relief box 5 through the dust outlet inside the sealing cover plate 2. The dust outlet is located between the sealing cover plate 2 and the pressure relief box 5, and both the pressure relief box 5 and the dust outlet are located at the discharge port of the feed chute 1, so that the dust-laden airflow can be smoothly introduced into the pressure relief box 5. Inside the pressure relief box 5, the exhaust fan 12 on the bottom surface of the mounting bracket 15 is activated, generating suction to accelerate the flow of the dust-laden airflow in the pressure relief box 5, assisting in the release of airflow pressure in the feed chute 1. The dust-laden airflow first passes through the filter screen 13 installed on the bottom wall of the pressure relief box 5. A set of filter holes 14 inside the screen performs preliminary filtration, intercepting larger dust particles and some finer dust. After preliminary filtration, the airflow continues to rise and reaches the dust collection filter element 8. The dust collection filter element 8 is slidably connected to the inner wall of the mounting groove 7, further adsorbing residual fine dust particles in the airflow, achieving secondary filtration. After secondary filtration, the airflow continues to rise and reaches the inspection cover 10. A set of air outlets 11 inside the inspection cover 10 guides the airflow to the outside, completing the pressure relief process.

[0034] When cleaning or replacement of the dust collection filter element 8 is required, operate the quick-release mechanism 6. A limiting plate 603 is slidably connected to the inner wall of the sliding groove 602 inside the mounting cover 601 of the quick-release mechanism 6. The limiting plate 603 is used to limit and fix the dust collection filter element 8, preventing it from sliding out of the mounting groove 7. By pulling the push-pull rod 606, the sliding rod 605 slides inside the mounting cover 601, overcoming the contraction force of the spring 604, causing the limiting plate 603 to move downwards, releasing the limitation on the dust collection filter element 8. At this time, pulling the handle 9 on the front of the dust collection filter element 8 allows it to be pulled out of the mounting groove 7 for convenient and quick cleaning or replacement, ensuring a continuous and stable dust removal and pressure relief effect of the device. Through the coordinated work of its components, the entire device effectively handles the high dust concentration and airflow pressure in the feed chute 1, improving the working environment, ensuring personnel health and safety, reducing equipment maintenance costs caused by dust problems, and improving the operating efficiency of the coal conveying system.

[0035] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A multifunctional circulating pressure relief device, comprising a material guide groove (1), the upper surface of the material guide groove (1) is provided with a sealing cover plate (2), characterized in that: A pressure relief box (5) is installed on the upper surface of the sealing cover (2). A quick-release mechanism (6) is provided on the front of the pressure relief box (5). An installation groove (7) is provided inside the pressure relief box (5). An installation bracket (15) is installed on the inner wall of the pressure relief box (5). An exhaust fan (12) is installed on the bottom surface of the installation bracket (15). A dust suction filter (8) is slidably connected to the inner wall of the installation groove (7).

2. The multi-function cycle pressure relief device of claim 1, wherein: The dust extraction filter (8) is slidably connected to the upper surface of the air outlet (11), and a filter screen (13) is installed on the inner bottom wall of the pressure relief box (5).

3. The multi-function cycle pressure relief device of claim 2, wherein: The pressure relief box (5) is equipped with an inspection cover (10) on its upper surface. The quick-release mechanism (6) includes a mounting cover (601) installed on the front of the pressure relief box (5). The mounting cover (601) has a sliding groove (602) inside.

4. The multi-function cycle pressure relief device of claim 3, wherein: The inner wall of the chute (602) is slidably connected to a limiting plate (603), and the limiting plate (603) is slidably connected to the front of the pressure relief box (5).

5. The multi-function cycle pressure relief device of claim 4, wherein: A sliding rod (605) is installed on the bottom surface of the limiting plate (603), and the sliding rod (605) is slidably connected to the inside of the mounting cover (601).

6. The multi-function cycle pressure relief device of claim 4, wherein: Two springs (604) are installed on the bottom surface of the limiting plate (603), and the two springs (604) are installed on the inner bottom wall of the slide (602).

7. The multi-function cycle pressure relief device of claim 5, wherein: A push-pull rod (606) is mounted on the front of the slide rod (605).

8. The multi-function cycle pressure relief device of claim 3, wherein: The inspection cover (10) has a set of air outlet holes (11) inside, and the filter screen (13) has a set of filter holes (14) inside.

9. The multi-function cycle pressure relief device of claim 1, wherein: The front of the dust filter (8) is fixedly connected to a handle (9).

10. The multi-function cycle pressure relief device of claim 1, wherein: A set of support components (4) is installed on the bottom surface of the guide trough (1), an installation frame plate (3) is installed on the left end of the guide trough (1), and a discharge port is provided on the right end of the guide trough (1).

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