A compact off-line ash cleaning single machine dust collector based on grid valve

Abstract

The utility model discloses a compact off -line dust cleaning single machine dust remover based on grid valve belongs to dust removal technical field in industry, including dust remover body, the dust remover body includes upper box body, middle box body and ash bucket, the upper box body inside fixed mounting has the flower board, a plurality of sets of filter bags are fixedly installed on the flower board, the junction of middle box body and ash bucket is provided with two sets of grid valve, and the upper portion of two sets of grid valve is provided with warehouse room no.

Description

Technical Field

[0001] This utility model belongs to the field of industrial dust removal technology, specifically relating to a compact offline dust collector based on a grid valve. Background Technology

[0002] A single-unit dust collector is a small, high-efficiency dust removal device widely used for dust collection at dust points. Traditional offline cleaning methods typically involve installing pneumatic / electric butterfly valves or baffle valves on the inlet duct of the dust collector or on the top of the clean air chamber of each compartment. When cleaning is required, the valve is first closed to cut off the airflow to the compartment to be cleaned, and then pulse-jet cleaning is performed.

[0003] This traditional approach has significant drawbacks: First, top-mounted valves require additional space and complex connecting ducts, increasing the overall height of the dust collector, making the structure less compact and the equipment bulky; second, top valves (especially pneumatic valves) require complex auxiliary systems such as solenoid valves and air pipelines, which not only increases manufacturing costs but also raises the failure rate; finally, for small, stand-alone dust collectors, this design greatly diminishes their core advantages of being "compact, flexible, and easy to install".

[0004] Therefore, there is an urgent need for a new structure that can overcome the disadvantages of large size, high cost, and bulky structure while retaining the advantages of high efficiency in offline dust removal.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a compact offline dust collector based on a grid valve, which can solve the problems of large equipment size, complex structure, high cost and bulkiness caused by the use of a top offline valve in existing single-unit dust collectors.

[0007] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0008] A compact offline dust collector based on bar valves includes a dust collector body, which includes an upper chamber, a middle chamber, and a lower ash hopper. A tube sheet is fixedly installed inside the upper chamber, and several sets of filter bags are fixedly installed on the tube sheet. Two sets of bar valves are provided at the junction of the middle chamber and the lower ash hopper, and a first compartment and a second compartment are respectively provided above the two sets of bar valves.

[0009] The grid valve includes a valve plate and a drive device. The valve plate is movably disposed below the tube sheet and is used to open or close the bottom opening of the filter bag.

[0010] The grid valve also includes a drive device for controlling the movement of the valve plate to achieve offline sealing and online restoration of one or more filter bag compartments.

[0011] In one or more embodiments of this utility model, the driving device is an electric push rod or a cylinder.

[0012] In one or more embodiments of this utility model, the driving device controls the opening and closing of the valve plate by driving the valve plate to slide horizontally.

[0013] In one or more embodiments of this utility model, the first compartment and the second compartment are separated by a partition, and the two are independent of each other, and are controlled to be offline and online respectively by two sets of grille valves.

[0014] In one or more embodiments of this utility model, a pulse jet cleaning system is fixedly installed above the tube sheet, and the pulse jet cleaning system is used to clean the filter bags by reverse jet cleaning.

[0015] In one or more embodiments of the present invention, the pulse jet system includes a plurality of nozzles, each of which corresponds to a plurality of sets of filter bags.

[0016] In one or more embodiments of this utility model, a clean air outlet is provided on one side of the upper housing, and an air filter is installed inside the clean air outlet.

[0017] In one or more embodiments of this utility model, the lower ash hopper is provided with a dust-laden gas inlet.

[0018] In one or more embodiments of this utility model, a discharge valve is installed at the bottom of the lower ash hopper.

[0019] In one or more embodiments of this utility model, a control system is further included, which is electrically connected to the drive device and is used to receive a dust removal signal and automatically control the opening and closing of the grille valve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Compact structure and significantly reduced size: The offline valve is moved from the top to the bottom of the filter bag (between the middle box and the ash hopper), eliminating the need for complex valve installation space and air ducts at the top, greatly reducing the overall height and volume of the dust collector, while maintaining the compact and flexible characteristics of a single dust collector.

[0022] 2. Reduced manufacturing costs: The bar screen valve has a relatively simple structure and flexible drive method, which simplifies the system structure, reduces the number of parts, and lowers production and maintenance costs.

[0023] 3. Guaranteed offline dust removal effect: By directly sealing the bottom air inlet of the filter bag assembly through the valve plate, the airflow in the dust-to-clean chamber can be effectively cut off, achieving true offline dust removal, thorough dust removal, and effectively preventing secondary dust adsorption.

[0024] 4. High reliability: The valve is located above the ash hopper, and the working environment is relatively simple, avoiding the direct impact of humid and high-temperature flue gas that the top valve may be subjected to, thus improving the service life and reliability of the valve. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front cross-sectional view of a compact offline dust collector based on a grille valve in one embodiment of the present invention;

[0027] Figure 2 This is a partially enlarged schematic diagram of a compact offline dust collector based on a grille valve in an "online" state (filter bag channel open) according to one embodiment of the present invention.

[0028] Figure 3 This is a partially enlarged schematic diagram of a compact offline dust collector based on a grille valve in an "offline" state (filter bag channel closed) according to one embodiment of the present invention.

[0029] Explanation of key figure labels:

[0030] 1. Dust collector body; 101. Upper chamber; 102. Middle chamber; 103. Lower ash hopper; 1031. Discharge valve; 2. Grille valve; 201. Valve plate; 3. Tube plate; 4. Filter bag; 5. Drive device; 6. Pulse jet cleaning system; 7. Clean air outlet; 8. Dust-laden gas inlet. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0032] like Figures 1-3 As shown in the figure, a compact offline dust collector based on a grid valve in one embodiment of this utility model has a main body 1, which consists of three parts from top to bottom: an upper chamber 101, a middle chamber 102, and a lower ash hopper 103. The upper chamber 101 is equipped with a pulse jet cleaning system 6 and a clean air outlet 7. The pulse jet cleaning system 6 can spray compressed air into the filter bags 4 to clean them. A tube sheet 3 is fixedly installed on the top of the middle chamber 102. Several mounting holes are evenly distributed on the tube sheet 3, and filter bags 4 are fixedly installed in each set of mounting holes for collecting dust particles.

[0033] The lower ash hopper 103 is used to collect the separated dust. The lower ash hopper 103 is equipped with a dust-laden gas inlet 8 for introducing dust-laden gas into the dust collector body 1. Additionally, a discharge valve 1031 is installed at the bottom of the lower ash hopper 103 to control the opening and closing of the bottom of the lower ash hopper 103. The discharge valve 1031 can be a butterfly valve or a gate valve; by opening the discharge valve 1031, the dust collected inside the lower ash hopper 103 can be automatically discharged.

[0034] Two sets of bar screen valves 2 are installed at the junction of the middle box 102 and the lower ash hopper 103. Each bar screen valve 2 includes a valve plate 201 and a drive device 5. The valve plate 201 is horizontally arranged and has channels corresponding to the filter bag mounting holes on the tube sheet 3.

[0035] In this embodiment, the drive device 5 is a cylinder, but it can also be replaced by an electric push rod, etc. The drive device 5 is connected to an independent servo control system (servo control systems are common knowledge to those skilled in the art and will not be described in detail here). The servo control system can receive dust removal signals and automatically control the operation of the drive device 5 to control the opening and closing of the grille valve 2. The valve plate 201 can slide horizontally under the drive of the drive device 5 to control its opening and closing.

[0036] In addition, a partition is vertically installed inside the middle housing 102, dividing the interior of the middle housing 102 into two compartments, with several sets of filter bags 4 located inside the first and second compartments respectively. The bottoms of the first and second compartments are controlled by two sets of grille valves 2, allowing independent control of their offline and online status.

[0037] Specifically as follows:

[0038] Online filtering status: such as Figure 3 As shown, the drive device 5 pushes the valve plate 201 so that its channel is fully aligned with the filter bag mounting hole on the tube sheet 3. At this time, the dust-laden gas enters the lower ash hopper 103 from the dust-laden gas inlet 8 and enters the filter bag 4 through the opened channel for filtration. The purified air enters the upper chamber 101 and is discharged from the clean air outlet 7.

[0039] Offline dust removal status: such as Figure 2 As shown, when dust removal is required, the servo control system issues a command, and the drive device 5 pulls the valve plate 201 to close, completely sealing its bottom opening. The airflow to this chamber is cut off, achieving offline operation. Subsequently, the pulse jet cleaning system 6 starts, and compressed air is blown into the filter bag 4 in reverse, shaking off the dust adhering to the outer surface of the filter bag 4. After dust removal is completed, the drive device 5 pushes the valve plate 201 back to its original position, restoring the online filtration state of the chamber.

[0040] This utility model achieves efficient offline dust removal function with a simple structure through the ingenious design of the bottom grille valve 2, perfectly solving the problems of large size and high cost of traditional designs. It is especially suitable for small single-unit dust removal scenarios with limited space and high cost-effectiveness requirements.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A compact off-line soot cleaning unit dust collector based on grid valve, characterized in that, The dust collector includes a dust collector body, which includes an upper chamber, a middle chamber, and a lower ash hopper. A tube sheet is fixedly installed inside the upper chamber, and several sets of filter bags are fixedly installed on the tube sheet. Two sets of grille valves are provided at the junction of the middle chamber and the lower ash hopper, and two compartments, namely, compartment one and compartment two, are respectively provided above the two sets of grille valves. The grid valve includes a valve plate and a drive device. The valve plate is movably disposed below the tube sheet and is used to open or close the bottom opening of the filter bag. The grid valve also includes a drive device for controlling the movement of the valve plate to achieve offline sealing and online restoration of one or more filter bag compartments.

2. A compact off-line soot cleaning single machine dust collector based on grid valve according to claim 1, characterized in that, The driving device is an electric push rod or a cylinder.

3. A compact off-line soot cleaning single machine dust collector based on grid valve according to claim 2, characterized in that, The drive device controls the opening and closing of the valve plate by driving it to slide horizontally.

4. A compact off-line soot cleaning single machine dust collector based on grid valve according to claim 1, characterized in that, The two compartments are separated by a partition, and are independent of each other. They are controlled to be offline or online by two sets of grille valves respectively.

5. A compact offline dust collector based on a grille valve according to claim 1, characterized in that, A pulse jet cleaning system is fixedly installed above the tube sheet, and the pulse jet cleaning system is used to clean the filter bags by reverse jet cleaning.

6. A compact off-line soot cleaning single machine dust collector based on grid valve according to claim 5, characterized in that, The pulse jet system includes multiple nozzles, each of which corresponds to one of the multiple sets of filter bags.

7. A compact off-line soot cleaning single machine dust collector based on grid valve according to claim 1, characterized in that, A clean air outlet is provided on one side of the upper housing, and an air filter is installed inside the clean air outlet.

8. A compact off-line soot cleaning single machine dust collector based on grid valve according to claim 1, characterized in that, The lower ash hopper is equipped with a dust-laden gas inlet.

9. A compact off-line soot cleaning single machine dust collector based on grid valve according to claim 8, characterized in that, A discharge valve is installed at the bottom of the ash hopper.

10. A compact off-line soot cleaning single machine dust collector based on grid valve according to claim 1, characterized in that, It also includes a control system, which is electrically connected to the drive device and is used to receive dust removal signals and automatically control the opening and closing of the grille valve.

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