Pulverized coal filter bag injection pipe with deviation rectifying function

Abstract

The utility model discloses a pulverized coal filter bag injection pipe with a deviation rectifying function, which comprises an injection pipe, a plurality of flow guide short pipes are arranged at the bottom of the injection pipe, and the plurality of flow guide short pipes are arranged at intervals along the length direction of the injection pipe; the detection devices are symmetrically arranged on two opposite sides of the blowing pipe; the deviation rectifying device is rotationally connected with the top of the blowing pipe; the control device is in signal connection with the detection device and the deviation correcting device; when the blowing pipe rotates around the axial direction of the blowing pipe, the detection device is driven to make contact with the cloth bag, a generated deviation signal is transmitted to the control device, and the control device drives the deviation rectifying device to rectify the operation position of the blowing pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal grinding systems, specifically relating to a coal powder filter bag injection pipe with a correction function. Background Technology

[0002] In many industrial sectors involving coal grinding processes, such as coal chemical engineering, the coal grinding system is a core component. Its stable and efficient operation plays a crucial role in ensuring the continuity of the entire production process, product quality, and cost control. However, current coal grinding systems face numerous pressing problems in actual operation. These problems not only severely impact production efficiency and increase operating costs but also pose significant threats to environmental protection and safe production.

[0003] The short operating cycle of coal pulverizing systems is a major problem currently faced. During normal operation, the backflush pipe, as a key component, directly affects the service life of the filter bags and the maintenance cycle of the system. However, in actual operation, the phenomenon of backflush pipe falling off and causing uneven airflow occurs frequently. This abnormal situation causes the filter bag opening to be subjected to uneven airflow impact, resulting in increasingly serious damage. As the core component for filtering coal dust particles and ensuring clean gas emissions, the filter bags often cannot reach their designed service life under the influence of uneven airflow, thus forcing the coal pulverizing system to frequently enter maintenance mode. Frequent pulverizing maintenance not only consumes a lot of manpower, material resources, and time, significantly increasing maintenance costs, but also disrupts normal production plans and reduces production efficiency. During filter bag replacement, due to the large number of personnel involved and the cross-operation, the on-site working environment is complex, and the safety risks are greatly increased. More importantly, the replaced filter bags have the potential risk of spontaneous combustion due to residual coal dust and other factors. Once spontaneous combustion occurs, it may cause serious safety accidents, causing great damage to personnel lives and equipment facilities.

[0004] The increasing environmental pressure also poses a severe challenge to coal grinding systems. During the grinding process, due to factors such as bag filter damage, a large amount of coal dust is discharged from the system with the flue gas, causing a sharp increase in the concentration of particulate matter in the air. These excessive dust emissions severely damage air quality and have a significant impact on the surrounding ecological environment and residents' health. Long-term exposure to high-concentration dust environments significantly increases the risk of respiratory and cardiovascular diseases for nearby residents. At the same time, dust can also interfere with plant photosynthesis, reduce atmospheric visibility, and affect the balance and normal operation of the ecosystem. When coal dust is found to be leaking from the coal grinding system, only emergency measures such as reducing the load or stopping the grinding can be taken, which will undoubtedly cause fluctuations in the gasifier and downstream systems, affecting the stability of the entire production process. Moreover, after coal dust leaks to the site, the risk of spontaneous combustion accumulates over time, further exacerbating the safety risks.

[0005] In addition, the difficulty in increasing the load is also an important factor restricting the efficient operation of the coal grinding system. After the filter bag is damaged, the filtration efficiency of the dust collector is greatly reduced. In order to maintain the normal operation of the production system, it is necessary to increase the power of the fan to ensure the ventilation volume. This not only leads to a significant increase in energy consumption and production costs, but also the abnormal accumulation of a large amount of dust inside the dust collector may cause a series of serious problems. Utility Model Content

[0006] The purpose of this invention is to provide a coal powder filter bag injection pipe with a correction function to solve one of the defects in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A pulverized coal filter bag injection pipe with a correction function includes:

[0009] The jet pipe has multiple guide tubes at its bottom, and the multiple guide tubes are spaced apart along the length of the jet pipe.

[0010] The detection devices are symmetrically arranged on opposite sides of the blowpipe;

[0011] The alignment device is rotatably connected to the top of the blowpipe.

[0012] A control device is signal-connected to the detection device and the correction device;

[0013] When the blowpipe rotates around its axis, it causes the detection device to come into contact with the cloth bag and transmits the resulting deviation signal to the control device, which then drives the correction device to correct the working position of the blowpipe.

[0014] Furthermore, the detection device includes probes symmetrically mounted on opposite sides of the blowpipe, and a magnetic induction generator is provided at the end of the probe away from the blowpipe.

[0015] Furthermore, the probe is perpendicular to the axis of the blowpipe.

[0016] Furthermore, a magnetic block is installed at the bottom of the magnetic induction generator, and a buffer unit is connected to the bottom of the magnetic block.

[0017] Furthermore, the buffer unit is vertically mounted on the bottom of the magnetic block.

[0018] Furthermore, the buffer unit is a spring.

[0019] Furthermore, a fixing frame is installed on the top of the blow pipe, and the top of the fixing frame is rotatably connected to the correction device.

[0020] Furthermore, the correction device includes a drive unit, the end of which is rotatably connected to a transmission rod, and the end of the transmission rod is rotatably connected to the top of the fixed frame.

[0021] Furthermore, the drive unit is one of a cylinder, an electric push rod, or a linear motor.

[0022] Furthermore, the guide tube is perpendicular to the axis of the jet pipe.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The two ends of the blowpipe are rotatably connected to the solenoid valve box and the tube sheet, respectively, and can rotate flexibly around the axis. The detection devices symmetrically arranged on both sides of the blowpipe come into contact with the filter bag during the rotation of the blowpipe. They can keenly sense whether the blowpipe deviates from the normal position and transmit the deviation signal to the control device in a timely manner. The control device quickly drives the correction device to accurately correct the working position of the blowpipe, ensuring that the blowpipe is always in the best working state. This allows the back-blowing airflow to act evenly on the surface of the filter bag, effectively removing coal dust from the filter bag, maintaining the filter bag filtration efficiency, and ensuring the stable and efficient operation of the entire filtration system.

[0025] 2. The probes are directly and symmetrically installed on opposite sides of the blowpipe. When the blowpipe rotates around the axis, the probes will directly contact the cloth bag, which can intuitively and accurately sense the actual position of the blowpipe. Compared with some indirect detection methods, it avoids interference and errors in the signal transmission process, and can more accurately determine whether the blowpipe deviates from the normal working position and the specific degree of deviation, providing a precise basis for subsequent correction operations.

[0026] 3. The probe is perpendicular to the axis of the blowpipe. When the blowpipe rotates around the axis, the probe can contact the cloth bag in a manner perpendicular to the direction of movement of the blowpipe. This perpendicular contact makes the force between the probe and the cloth bag evenly distributed, and can more accurately sense the relative positional changes between the blowpipe and the cloth bag.

[0027] 4. During the rotation of the blowpipe and its contact with the cloth bag, it will inevitably be subjected to mechanical impact and collision. The buffer unit can absorb and disperse these impact forces, reducing the direct impact on the magnetic induction generator and the magnetic block.

[0028] 5. Vertically installed buffer units have better elasticity and energy absorption capacity. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the installation of the coal powder filter bag blowpipe with correction function provided by this utility model;

[0031] The components are: 1. Tube sheet; 2. Blowpipe; 3. Probe; 4. Sealing ring; 5. Solenoid valve housing; 6. Connecting pipe; 7. Magnetic induction generator; 8. Magnetic block; 9. Buffer unit; 10. Drive unit; 11. Filter bag. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] This embodiment provides a pulverized coal filter bag injection pipe with a correction function. The following is a further detailed description of this utility model with reference to the accompanying drawings:

[0038] like Figure 1 As shown, a coal powder filter bag blowpipe with a correction function includes a blowpipe 2, one end of which is rotatably connected to a connecting pipe 6 at the bottom of a solenoid valve housing 5 and fitted with a sealing ring 4, and the other end is rotatably connected to a tube sheet 1. The bottom of the blowpipe 2 has multiple guide pipes, which are spaced apart along the length of the blowpipe 2. The guide pipes are perpendicular to the axis of the blowpipe and correspond one-to-one with the filter bags 11. A detection device is symmetrically arranged on opposite sides of the blowpipe 2 and located at the end of the blowpipe 2 near the solenoid valve housing 5. A correction device is rotatably connected to the top of the blowpipe 2 and located near the tube sheet 1. A control device is signal-connected to the detection device and the correction device. When the blowpipe 2 deviates and rotates around its axis, it can drive the detection device to contact the filter bag 11 and transmit the deviation signal generated by the detection device to the control device. The control device then drives the correction device to correct the working position of the blowpipe 2.

[0039] In the above structure, since one end of the injection pipe 2 is rotatably connected to the solenoid valve housing 5 and the other end is rotatably connected to the tube sheet 1, it has a rotatable characteristic. The detection devices symmetrically arranged on opposite sides of the injection pipe 2 can contact the filter bag 11 when the injection pipe 2 rotates around its axis. Once the injection pipe 2 deviates, the detection device will promptly transmit the deviation signal to the control device. After receiving the signal, the control device will drive the correction device to correct the working position of the injection pipe 2. Through this real-time monitoring and automatic correction mechanism, the excessive wear of the filter bag 11 caused by the deviation of the injection pipe 2 is effectively avoided, and the service life of the filter bag 11 is significantly extended. The extension of the service life of the filter bag 11 directly reduces the number of maintenance operations of the coal grinding system, reduces maintenance costs and workload, ensures the continuity and stability of production, and improves overall production efficiency.

[0040] Furthermore, the detection device includes probes 3, symmetrically installed on opposite sides of the blowpipe 2. A magnetic induction generator 7 is located at the end of the probes 3 furthest from the blowpipe 2. When the blowpipe 2 is in its normal position, a specific magnetic field distribution is formed between the magnetic induction generator 7 and the cloth bag 11. Once the blowpipe 2 deviates, the magnetic field distribution changes. The magnetic induction generator 7 can sensitively detect this change and accurately transmit the corresponding signal to the control device. This magnetic induction-assisted detection method further enhances the accuracy of the detection, enabling timely detection of even minor deviations in the blowpipe 2, ensuring the timeliness and effectiveness of the correction operation.

[0041] In addition, the combination structure of probe 3 and magnetic induction generator 7 is relatively simple, without complex mechanical transmission parts or easily damaged electronic components, which reduces the possibility of detection errors caused by component failure or wear, improves the stability and reliability of the detection device, and can work continuously and stably during long-term operation, providing a reliable guarantee for the correction function of the blow pipe 2.

[0042] In practical applications, the production environment in industries such as coal chemical industry is usually quite complex, with various adverse factors such as electromagnetic interference and dust pollution. The magnetic induction generator 7 has a certain anti-interference capability and can work accurately in complex electromagnetic environments without being affected by external electromagnetic signals. At the same time, the physical contact detection method of probe 3 is not affected by pollutants such as dust, and can adapt to harsh working conditions, ensuring that the detection device can operate normally in various environments.

[0043] When the detection device detects that the blowpipe 2 is deviated, the magnetic induction generator 7 will immediately transmit the deviation signal to the control device. The control device can receive the signal in a very short time and quickly drive the correction device to correct the deviation of the blowpipe 2 according to the preset algorithm and parameters. This real-time feedback and fast response mechanism can minimize the impact of the deviation of the blowpipe 2 on the filtration effect of the filter bag 11 and ensure that the entire filtration system is always in a state of high efficiency.

[0044] In this embodiment, the probe 3 is perpendicular to the axis of the blowpipe 2. When the blowpipe 2 rotates around its axis, the probe 3 can contact the bag 11 in a manner perpendicular to the direction of movement of the blowpipe 2, making the force distribution between the probe 3 and the bag 11 uniform and enabling more accurate sensing of the relative positional changes between the blowpipe 2 and the bag 11. For example, when the blowpipe 2 deviates slightly, the vertically arranged probe 3 can more directly capture the distance or pressure changes caused by this deviation, thereby accurately determining whether the blowpipe 2 has deviated from its normal operating position. This avoids data distortion caused by the probe 3's tilted contact and provides a reliable basis for subsequent correction. At the same time, the vertically arranged probe 3 can form a more comprehensive and uniform detection area around the blowpipe 2, reducing blind spots. Compared with probes 3 arranged at other angles, it can more effectively cover all directions of contact between the blowpipe 2 and the bag 11, ensuring that any deviation of the blowpipe 2 in any direction can be detected in a timely manner, improving the comprehensiveness and accuracy of the detection.

[0045] The design of probe 3 being perpendicular to the axis of the blowpipe 2 facilitates good coordination with the correction device. After receiving the deviation signal transmitted by probe 3, the correction device can more accurately calculate the correction direction and force based on the position information provided by the vertically arranged probe 3, thereby achieving precise adjustment of the position of the blowpipe 2. The coordinated work between the two is more efficient and stable, further improving the performance of the entire correction system.

[0046] In this embodiment, a magnetic block 8 is installed at the bottom of the magnetic induction generator 7, and a buffer unit 9 is connected to the bottom of the magnetic block 8. The buffer unit 9 connected to the bottom of the magnetic block 8 can play a certain buffering role for the magnetic induction generator 7 and the magnetic block 8, which can absorb and weaken the influence of external vibration on the magnetic induction generator 7, and at the same time shield some electromagnetic interference to a certain extent, so that the magnetic induction generator 7 is in a relatively stable working environment, ensuring the stability and accuracy of the detection signal, and avoiding the problem of misjudgment or untimely correction caused by signal instability.

[0047] During use, the blowpipe 2 will inevitably be subjected to mechanical impacts and collisions during its rotation and contact with the cloth bag 11. The buffer unit 9 can absorb and disperse these impact forces, reducing the direct impact on the magnetic induction generator 7 and the magnetic block 8. For example, when the blowpipe 2 shakes violently due to a sudden change in resistance, the buffer unit 9 can buffer some of the energy, preventing the magnetic induction components from being damaged due to excessive force.

[0048] Specifically, the buffer unit 9 is vertically mounted on the bottom of the magnetic block 8, and the buffer unit 9 is a spring.

[0049] In this embodiment, a fixed frame is installed on the top of the blow pipe 2. The top of the fixed frame is rotatably connected to the correction device. The correction device includes a drive unit 10. A transmission rod is rotatably connected to the end of the drive unit 10. The end of the transmission rod is rotatably connected to the top of the fixed frame.

[0050] The drive unit 10 is directly rotatably connected to the top of the fixed frame via a transmission rod, reducing energy loss and error accumulation caused by intermediate transmission links. During the correction process, the power output by the drive unit 10 can be efficiently and accurately transmitted to the fixed frame via the transmission rod, thereby driving the blowpipe 2 to make precise angle adjustments. This ensures that the correction action can quickly and accurately respond to the offset signal fed back by the detection device, improving the accuracy of the correction. At the same time, the rotatable connection structure allows the transmission rod to rotate freely within a certain angle range. Combined with the precise control of the drive unit 10, it can achieve multi-angle, small-step fine adjustments to the blowpipe 2. Whether it is a slight offset or a larger adjustment, the output of the drive unit 10 can be precisely controlled to allow the transmission rod to drive the fixed frame to adjust the blowpipe 2 to the correct position, meeting the positional accuracy requirements of the blowpipe 2 under different working conditions.

[0051] In this embodiment, the drive unit 10 is one of a cylinder, an electric push rod, or a linear motor.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit its protection scope. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading this utility model, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the utility model, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the utility model.

Claims

1. A pulverized coal filter bag injection pipe with a deviation correction function, characterized in that, include: The blowpipe (2) has multiple guide tubes at the bottom, and the multiple guide tubes are spaced apart along the length of the blowpipe (2); The detection devices are symmetrically arranged on opposite sides of the blowpipe (2); The correction device is rotatably connected to the top of the blowpipe (2); A control device is signal-connected to the detection device and the correction device; When the blowpipe (2) rotates around its axis, it causes the detection device to contact the cloth bag (11) and transmits the generated deviation signal to the control device, which then drives the correction device to correct the working position of the blowpipe (2).

2. The coal dust filter bag injection pipe with a deviation rectifying function according to claim 1, characterized in that, The detection device includes a probe (3) which is symmetrically installed on opposite sides of the blow pipe (2). A magnetic induction generator (7) is provided at the end of the probe (3) away from the blow pipe (2).

3. The coal dust filter bag injection pipe with a deviation rectifying function according to claim 2, characterized in that, The probe (3) is perpendicular to the axis of the blowpipe (2).

4. The coal dust filter bag injection pipe with a deviation rectifying function according to claim 2, characterized in that, A magnetic block (8) is installed at the bottom of the magnetic induction generator (7), and a buffer unit (9) is connected to the bottom of the magnetic block (8).

5. The coal dust filter bag injection pipe with a deviation rectifying function according to claim 4, characterized in that, The buffer unit (9) is vertically installed at the bottom of the magnetic block (8).

6. The coal powder filter bag injection pipe with a deviation rectifying function according to claim 5, characterized in that, The buffer unit (9) is a spring.

7. The coal dust filter bag injection pipe with a deviation rectifying function according to claim 1, characterized in that, The top of the blow pipe (2) is equipped with a fixing frame, and the top of the fixing frame is rotatably connected to the correction device.

8. The coal dust filter bag injection pipe with a deviation rectifying function according to claim 7, characterized in that, The correction device includes a drive unit (10), and a transmission rod is rotatably connected to the end of the drive unit (10). The end of the transmission rod is rotatably connected to the top of the fixed frame.

9. The coal dust filter bag injection pipe with a deviation rectifying function according to claim 8, characterized in that, The drive unit (10) is one of a cylinder, an electric push rod, or a linear motor.

10. The coal dust filter bag injection pipe with a deviation rectifying function according to claim 1, characterized in that, The guide pipe is perpendicular to the axis of the blow pipe (2).

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