Dust removal flue intercommunication device and dust removal production system

Abstract

The utility model provides a dust removal flue intercommunication device and dust removal production system, wherein the dust removal flue intercommunication device, include: first exhaust component, it includes first exhaust pipeline and sets up first control valve on first exhaust pipeline for setting at the negative pressure export department of first dust remover, second exhaust component, it includes second exhaust pipeline and sets up second control valve on second exhaust pipeline for setting at the negative pressure export department of second dust remover, the connecting pipe, one end with first exhaust pipeline intercommunication, the other end with second exhaust pipeline intercommunication, and still be equipped with third control valve on connecting pipe, the utility model discloses when the rest electrostatic precipitator body can still work normally when single electrostatic precipitator body appears the failure, thereby can reduce the production efficiency because of shutdown to reduce.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic precipitator technology, and in particular to a dust removal flue interconnection device and a dust removal production system. Background Technology

[0002] Currently, the commonly used electrostatic precipitators in my country's industrial metallurgical field are single-unit exhaust fans paired with single-unit electrostatic precipitators. The rotation of the exhaust fan impeller generates sufficient negative pressure inside the electrostatic precipitator, thereby drawing the flue gas in front of the inlet of the electrostatic precipitator into the electrostatic precipitator for purification before being discharged.

[0003] Under current technological conditions, a single exhaust fan is commonly used in conjunction with a single dust collector. If the electrostatic precipitator malfunctions or stops operating, the entire production line needs to be shut down, thereby reducing production efficiency.

[0004] Therefore, there is an urgent need for a dust removal flue interconnection device and a dust removal production system, so that if a single electrostatic precipitator fails, the remaining electrostatic precipitators can still work normally, thereby reducing the reduction in production efficiency due to downtime. Utility Model Content

[0005] The purpose of this utility model is to provide a dust removal flue interconnection device and a dust removal production system, which aims to solve the technical problem that a failure of a single electrostatic precipitator body can cause the entire production line to stop.

[0006] To achieve the above objectives, in a first aspect, this utility model provides a dust removal flue interconnection device, comprising:

[0007] The first exhaust assembly includes a first exhaust pipe and a first control valve disposed on the first exhaust pipe for being disposed at the negative pressure outlet of the first dust collector;

[0008] The second exhaust assembly includes a second exhaust pipe and a second control valve disposed on the second exhaust pipe for being disposed at the negative pressure outlet of the second dust collector;

[0009] The connecting pipe has one end connected to the first exhaust pipe and the other end connected to the second exhaust pipe, and the connecting pipe is also equipped with a third control valve.

[0010] As a further improvement to the above solution, the first control valve, the second control valve and the third control valve have the same structure and are respectively mounted on the outer wall of the corresponding pipe by corresponding brackets.

[0011] As a further improvement to the above solution, each control valve includes a drive motor, a rotating shaft, and a valve plate mounted on the rotating shaft, all mounted on the bracket.

[0012] One end of the rotating shaft is driven and connected to the power output end of the drive motor, and the other end extends through the corresponding pipe into the inside of the pipe. The shape of the valve plate is matched with the inner wall of the corresponding pipe.

[0013] As a further improvement to the above solution, a first sealing ring is provided on the rotating shaft at the joint with the corresponding pipe wall to prevent negative pressure and / or flue gas leakage.

[0014] As a further improvement to the above solution, a second sealing ring is provided on the inner wall of each pipe at the location where the control valve is installed. The second sealing ring is matched with the valve plate to increase the sealing effect when the control valve is closed.

[0015] Secondly, this utility model also provides a dust removal production system, including a dust removal flue interconnection device as provided in the first aspect, and further including a first dust collector, a second dust collector, a first fan and a second fan;

[0016] The first exhaust component of the dust removal flue interconnection device is located between the first dust collector and the first fan;

[0017] The second exhaust assembly of the dust removal flue interconnection device is located between the second dust collector and the second fan.

[0018] As a further improvement to the above scheme, both the first fan and the second fan are centrifugal fans.

[0019] As a further improvement to the above scheme, both the first dust collector and the second dust collector are electrostatic precipitators.

[0020] Because this utility model adopts the above technical solutions, the beneficial effects of this application are as follows:

[0021] 1. This utility model provides a dust collector flue gas interconnection device, which sets a corresponding exhaust component at the negative pressure outlet of the corresponding dust collector, and sets a control valve on the exhaust pipe of the corresponding exhaust component; in addition, a connecting pipe is provided to connect adjacent exhaust pipes, and a third control valve is set on the connecting pipe; with this configuration, the control valve on each exhaust pipe can independently control the on / off of the corresponding dust collector. When one of the dust collectors fails and stops, the control valve on the corresponding exhaust component can be closed, and the third control valve on the connecting pipe can be opened, connecting the corresponding fan to the adjacent dust collector, increasing the flue gas handling capacity of a single dust collector in normal condition, maximizing the handling capacity of a single dust collector, increasing the overall utilization rate of the entire system, and reducing the adverse effects of dust collector failure and shutdown.

[0022] 2. The dust removal flue interconnection device provided by this utility model has each control valve driven by a drive motor to rotate the rotating shaft, which in turn drives the valve plate to rotate to open or close the corresponding pipe. The electric drive control valves make it easy for staff to remotely control the opening and closing of the corresponding control valves. The operation is simple and convenient, realizes automatic control, and improves the operating efficiency and reliability of the equipment. Attached Figure Description

[0023] 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 of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional schematic diagram of a dust removal flue interconnection device disclosed in this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the control valves (first control valve, second control valve, and third control valve) disclosed in this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of a dust removal production system disclosed in this utility model.

[0027] Figure label:

[0028] 1. First exhaust assembly; 11. First exhaust pipe; 12. First control valve; 2. Second exhaust assembly; 21. Second exhaust pipe; 22. Second control valve; 3. Connecting pipe; 31. Third control valve; 4. Drive motor; 5. Rotating shaft; 6. Valve plate; 7. First sealing ring; 8. Second sealing ring;

[0029] 01. First dust collector; 02. Second dust collector; 03. First fan; 04. Second fan.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0034] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] Example 1

[0036] See Figure 1 and Figure 2 This utility model provides a dust removal flue interconnection device, comprising:

[0037] The first exhaust assembly 1 includes a first exhaust pipe 11 and a first control valve 12 disposed on the first exhaust pipe 11. It is used to be disposed at the negative pressure outlet of the first dust collector 01. Specifically, in practical use, the first exhaust assembly 1 is disposed between the first dust collector 01 and its corresponding first fan 03. The first control valve 12 can control the on and off of the negative pressure in the first dust collector 01, which facilitates the independent control of the first dust collector 01.

[0038] The second exhaust assembly 2 includes a second exhaust pipe 21 and a second control valve 22 disposed on the second exhaust pipe 21. It is used to be disposed at the negative pressure outlet of the second dust collector 02. Specifically, in practical use, the second exhaust assembly 2 is disposed between the second dust collector 02 and its corresponding second fan 04. The second control valve 22 can control the on and off of the negative pressure in the second dust collector 02, which facilitates the independent control of the second dust collector 02.

[0039] The connecting pipe 3 has one end connected to the first exhaust pipe 11 and the other end connected to the second exhaust pipe 21, and the connecting pipe 3 is also provided with a third control valve 31;

[0040] This invention features a corresponding exhaust assembly installed at the negative pressure outlet of each dust collector, with control valves on the exhaust pipes of each assembly. A connecting pipe 3 connects adjacent exhaust pipes, and a third control valve 31 is installed on the connecting pipe 3. This configuration allows each exhaust pipe's control valve to independently control the on / off state of its corresponding dust collector. When a dust collector malfunctions and stops, the control valve on the corresponding exhaust assembly can be closed, and the third control valve 31 on the connecting pipe 3 can be opened, connecting its corresponding fan to its adjacent dust collector. This increases the flue gas processing capacity of the dust collector in normal operation, maximizing the processing capacity of a single dust collector, increasing the overall system utilization rate, and reducing the adverse effects of dust collector malfunctions or shutdowns.

[0041] In a preferred embodiment, the first control valve 12, the second control valve 22, and the third control valve 31 have the same structure and are respectively mounted on the outer wall of the corresponding pipe (first exhaust pipe 11, second exhaust pipe 21, and connecting pipe 3) by corresponding brackets 9; however, those skilled in the art should understand that the technical solution of this utility model is not limited to the number of pipes and specific application scenarios.

[0042] Specifically, each control valve includes a drive motor 4, a rotating shaft 5, and a valve plate 6 mounted on the rotating shaft 5, all mounted on the bracket 9.

[0043] The drive motor 4 is fixedly installed on the top (or side, depending on the pipeline layout) of the bracket 9 by bolts. Its power output end is rigidly connected to one end of the rotating shaft 5, which is used to drive the rotating shaft 5 to rotate around its own axis.

[0044] The rotating shaft 5 is a cylindrical metal rod. One end of it is driven and connected to the power output end of the drive motor 4, and the other end extends through the pipe wall of the corresponding pipe (such as the pipe wall of the first exhaust pipe 11) into the pipe. An annular gap is formed between the outer circumference of the extension section and the pipe wall.

[0045] The valve plate 6 is an arc-shaped plate (or a disc-shaped structure) that matches the curvature of the inner wall of the pipe. Its outer diameter is slightly smaller than the inner diameter of the corresponding pipe to ensure that the valve plate 6 can rotate flexibly inside the pipe. The center position of the valve plate 6 is fixedly connected to the extension end of the rotating shaft 5 (such as through a flange or welding), so that it rotates synchronously with the rotating shaft 5 to realize the on / off control of the pipe (when the valve plate 6 rotates to be perpendicular to the pipe axis, the valve is closed; when it rotates to be parallel to the pipe axis, the valve is open).

[0046] The first control valve 12, the second control valve 22, and the third control valve 31 adopt the same structure, and can be quickly assembled through mass production of standardized parts, reducing the cost of customized design. At the same time, when a valve fails, only the same model of drive motor 4, rotating shaft 5 or valve plate 6 and other common parts need to be replaced to complete the repair, without the need to select parts separately for different valves, which greatly improves maintenance efficiency.

[0047] In a preferred embodiment, to improve the valve's sealing performance, especially its reliability in scenarios prone to leakage such as negative pressure or flue gas, a first sealing ring 7 is provided on the rotating shaft 5 at the joint with the corresponding pipe wall.

[0048] At the location where the rotating shaft 5 passes through the pipe wall (i.e., the junction of the rotating shaft 5 and the pipe wall), a first sealing ring 7 is provided on the outer circumferential surface of the rotating shaft 5. Specifically, an annular groove (approximately 1-2 mm deep, with a width matching the cross-sectional diameter of the first sealing ring 7) is formed on the outer circumferential surface of the rotating shaft 5. The first sealing ring 7 (preferably made of fluororubber FKM, which is oil-resistant, high-temperature resistant, and has good airtightness) is embedded in the annular groove. Its inner side is interference-fitted with the rotating shaft 5, and its outer side is tightly fitted with the inner surface of the pipe wall, thereby blocking the gap between the rotating shaft 5 and the pipe wall and preventing negative pressure in the pipe from causing external air to be drawn back or for media such as flue gas to leak along the gap.

[0049] In a preferred embodiment, an annular sealing groove (approximately 1-3 mm deep, with a width matching the cross-sectional diameter of the second sealing ring 8) is provided on the inner wall of each pipe (such as the first pipe 1) corresponding to the installation position of the control valve (i.e., the sealing surface position when the valve plate 6 is closed). The second sealing ring 8 (preferably made of polytetrafluoroethylene PTFE, which is resistant to strong corrosion and has a low coefficient of friction) is embedded in the sealing groove. The outer side of the second sealing ring 8 is flush with the inner wall of the pipe, and the inner side is in close contact with the outer circumferential surface of the valve plate 6. When the valve is closed, the valve plate 6 rotates with the rotating shaft 5 to the closed position, and its outer circumferential surface fits against the inner side of the second sealing ring 8 to form a radial seal. The valve plate 6 achieves end-face sealing by abutting against the inner wall of the pipe and radial sealing by fitting its outer circumferential surface against the second sealing ring 8, which significantly reduces the leakage risk of the medium (such as high-temperature flue gas and corrosive liquid) and meets the stringent requirements for high-sealing valves in the chemical, environmental protection and other fields.

[0050] Example 2

[0051] See Figure 3 The present invention also provides a dust removal production system, including a dust removal flue interconnection device as provided in the first aspect, and further including a first dust collector 01, a second dust collector 02, a first fan 03 and a second fan 04;

[0052] The first exhaust assembly 1 is disposed on the dust removal flue between the first dust collector 01 and the first fan 03, and is used to regulate the airflow path from the outlet of the first dust collector 01 to the first fan 03; the second exhaust assembly 2 is disposed on the dust removal flue between the second dust collector 02 and the second fan 04, and is used to regulate the airflow path from the outlet of the second dust collector 02 to the second fan 04.

[0053] Both the first dust collector 01 and the second dust collector 02 are electrostatic precipitators (preferably plate-type or tubular electrostatic precipitators). Their inlets are connected to the dust-laden gas emission outlets of the production line, and their outlets are connected to the corresponding fan inlets through the first exhaust assembly 1 and the second exhaust assembly 2, respectively. The electrostatic precipitator is equipped with cathode wires, anode plates, and a high-voltage power supply. The high-voltage electric field charges the dust and adsorbs it onto the electrode plates, achieving efficient dust removal. The electrostatic precipitator is suitable for handling large amounts of flue gas, adapts to high-temperature environments and corrosive gases, and can achieve automatic operation control, thereby improving the operating efficiency and reliability of the equipment.

[0054] Both the first fan 03 and the second fan 04 are centrifugal fans (preferably backward-curved blade centrifugal fans). The impeller of the centrifugal fan rotates at high speed to generate centrifugal force, which can output high air volume and high static pressure, realize rapid air circulation, promote ventilation and air exchange efficiency, and effectively reduce the noise generated when the air flows.

[0055] The dust collection flue interconnection device enables free switching between "main / standby" or "parallel" modes of the two dust collectors through valve switching and flow regulation; when one electrostatic precipitator stops due to a fault, the other can quickly take over the entire processing capacity through the interconnection device, avoiding production line downtime and significantly improving system reliability; at the same time, the alternating operation of the two devices can also extend the service life of a single device.

[0056] During operation, the first fan 03 and the second fan 04 extract and purify external flue gas through the first exhaust channel and the second exhaust channel, enabling the first dust collector 01 and the second dust collector 02 to remove dust. If the first dust collector 01 malfunctions or stops operating, the first control valve 12 closes the first exhaust channel, while the third control valve 31 opens the connecting pipe 3. The second exhaust channel remains normal, allowing the connecting pipe 3 to connect the first and second exhaust channels. The first fan 03 and the second fan 04 simultaneously extract flue gas and remove dust from the normally operating second dust collector 02, increasing the flue gas processing capacity of a single dust collector. This maximizes the processing capacity of a single dust collector, reduces the adverse effects of dust collector malfunctions or shutdowns, and achieves the goal of energy saving and consumption reduction.

[0057] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A dust removal flue gas duct interconnection device, characterized in that, include: The first exhaust assembly includes a first exhaust pipe and a first control valve disposed on the first exhaust pipe for being disposed at the negative pressure outlet of the first dust collector; The second exhaust assembly includes a second exhaust pipe and a second control valve disposed on the second exhaust pipe for being disposed at the negative pressure outlet of the second dust collector. The connecting pipe has one end connected to the first exhaust pipe and the other end connected to the second exhaust pipe, and the connecting pipe is also equipped with a third control valve.

2. The dust removal flue gas interconnection device according to claim 1, characterized in that, The first control valve, the second control valve, and the third control valve have the same structure and are respectively mounted on the outer wall of the corresponding pipe via corresponding brackets.

3. The dust removal flue interconnection device according to claim 2, characterized in that, Each control valve includes a drive motor, a rotating shaft, and a valve plate mounted on the rotating shaft, all mounted on the bracket. One end of the rotating shaft is driven and connected to the power output end of the drive motor, and the other end extends through the corresponding pipe into the inside of the pipe. The shape of the valve plate is matched with the inner wall of the corresponding pipe.

4. The dust removal flue gas interconnection device according to claim 3, characterized in that, The rotating shaft is provided with a first sealing ring at the joint with the corresponding pipe wall to prevent negative pressure and / or flue gas leakage.

5. A dust removal flue gas interconnection device according to claim 3 or 4, characterized in that, A second sealing ring is provided at the corresponding location of the control valve on the inner wall of each pipe, and the second sealing ring is matched with the valve plate.

6. A dust removal production system, characterized in that, The device includes a dust removal flue interconnection device as described in any one of claims 1-5, and further includes a first dust collector, a second dust collector, a first fan, and a second fan; The first exhaust component of the dust removal flue interconnection device is located between the first dust collector and the first fan; The second exhaust assembly of the dust removal flue interconnection device is located between the second dust collector and the second fan.

7. A dust removal production system according to claim 6, characterized in that, Both the first and second fans are centrifugal fans.

8. A dust removal production system according to claim 6 or 7, characterized in that, Both the first dust collector and the second dust collector are electrostatic precipitators.

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