Ash material unloading device

Abstract

The utility model relates to an ash discharging device. The ash discharging device comprises a dust removing assembly, a dust collecting assembly and a control assembly. The dust removal assembly comprises a dust removal pipeline and a plurality of dust removers. The dust collection assembly comprises a dust collection bin, and the dust collection bin communicates with the dust remover through a dust removal pipeline. The control assembly comprises a controller and a pressure sensor, the controller is electrically connected with the pressure sensor, and the pressure sensor is installed on the dust collection assembly. According to the technical scheme, the problem that in the prior art, whether the dust remover unloads dust completely or not cannot be accurately judged is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of negative pressure dust collection, and in particular to an ash material unloading device. Background Art

[0002] With the increasing attention paid to environmental protection, dry desulfurization and denitrification equipment is being used more and more. The byproducts of dry desulfurization and denitrification are dry powders distributed in multiple reaction chambers. When the existing multi-chamber reactor needs to unload ash, the automatic control program generally starts the unloading action of each chamber by setting a timer until all chambers are unloaded. In actual applications, due to the different amount of ash in each chamber, during the unloading process, the previous chamber may not be fully unloaded before switching to the next chamber for unloading, and the unloaded chamber needs to be manually unloaded.

[0003] In the prior art, a level meter is installed in the bin to determine the amount of ash in the bin (for example, the authorization announcement number is CN213140014U, and the name is a silo with a level meter). The level meter can measure the amount of ash in the bin, but during use, when the amount of ash is lower than the position where the level meter is placed, it is inaccurate to judge whether the bin is completely unloaded by relying solely on the level meter. Utility Model Content

[0004] The present application provides an ash unloading device to solve the problem in the prior art that it is impossible to accurately judge whether the dust collector has completely unloaded ash.

[0005] According to the present application, a dust removal device is provided, comprising: a dust removal component, a dust collection component and a control component. The dust removal component comprises a dust collection pipeline and a plurality of dust collectors. The dust collection component comprises a dust collection bin, and the dust collection bin and the plurality of dust collectors are all connected through the dust collection pipeline. The control component comprises a controller and a pressure sensor, the controller and the pressure sensor are electrically connected, and the pressure sensor is mounted on the dust collection component.

[0006] In some embodiments, the dust collecting assembly further includes a plurality of first solenoid valves and a plurality of level meters, the controller is electrically connected to the plurality of first solenoid valves and the plurality of level meters, and the plurality of first solenoid valves and the plurality of level meters are arranged one-to-one correspondingly to the plurality of dust collectors.

[0007] In some embodiments, the dust collection assembly also includes a dust collection pipeline and a negative pressure fan, the first end of the dust collection pipeline is connected to the dust collection bin, the second end of the dust collection pipeline is connected to the negative pressure fan, and the pressure sensor is arranged on the dust collection pipeline.

[0008] In some embodiments, the dust collecting assembly further includes a filter screen, which is disposed inside the dust collecting pipeline and is close to the first end of the dust collecting pipeline.

[0009] In some embodiments, the dust collecting bin has a straight cylinder section, an inclined cylinder section and an ash discharge port, the inclined cylinder section is arranged below the straight cylinder section, the ash discharge port is arranged at the bottom of the inclined cylinder section, and the control component also includes a second solenoid valve, the second solenoid valve is arranged at the ash discharge port, and the second solenoid valve is electrically connected to the controller.

[0010] In some embodiments, the dust collector includes a dust removal chamber and a filtering structure, the dust removal chamber has a receiving space, and the filtering structure is arranged in the dust removal chamber.

[0011] In some embodiments, the filtering structure includes a support plate and multiple ceramic tubes, the support plate is connected to the inner wall of the dust removal chamber, the support plate has multiple first through holes, the multiple first through holes and the multiple ceramic tubes are arranged one by one, and the ceramic tubes pass through the first through holes to cooperate with the support plate.

[0012] In some embodiments, the filtration structure further includes a flower plate, which is disposed above the ceramic tube and abuts against the ceramic tube, the flower plate fits the inner wall of the support plate, and the flower plate and the support plate are fastened by screws.

[0013] In some embodiments, the flower plate has a plurality of second via holes, and the plurality of second via holes and the plurality of ceramic tubes are arranged in a one-to-one correspondence.

[0014] In some embodiments, multiple ceramic tubes each have a filtering section and a limiting section, the filtering section and the limiting section are connected, the filtering section passes through the first through hole, the limiting section is located between the support plate and the flower plate, the diameter of the limiting section is larger than the diameter of the first through hole, and the diameter of the second through hole is between the inner diameter and the outer diameter of the limiting section.

[0015] By applying the technical solution of the present application, the dust collecting bin and multiple dust collectors are connected through dust removal pipelines. The dust collectors are used to filter the polluted gas and discharge the filtered ash (dust, particulate matter, etc. in the polluted gas) into the dust collecting bin through the dust removal pipeline. The controller and the pressure sensor are electrically connected, and the controller can receive signals from the pressure sensor. The pressure sensor is installed on the dust collecting assembly, and can detect the pressure in the empty pumping state. Once it is detected that it is within the empty pumping pressure range, it is determined that the dust is completely unloaded. And the detected signal is transmitted to the controller. The technical solution of the present application effectively solves the problem in the prior art that it is impossible to accurately judge whether the dust collector is completely unloaded. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 A schematic structural diagram of an ash discharging device according to an embodiment of the present application is shown;

[0019] Figure 2 A schematic diagram of the structure of a dust collector according to an embodiment of the present application is shown;

[0020] Figure 3 A control flow diagram of an embodiment of the present application is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Dust removal assembly; 11. Dust removal pipeline; 12. Dust collector; 121. Dust removal chamber; 122. Filter structure; 1221. Support plate; 1222. Ceramic tube; 1223. Flower board; 20. Dust collection assembly; 21. Dust collection bin; 211. Straight cylinder section; 212. Oblique cylinder section; 213. Ash discharge port; 22. Dust collection pipeline; 23. Negative pressure fan; 30. Control assembly; 31. Pressure sensor; 32. First solenoid valve; 33. Level meter. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0026] like Figure 1 As shown, the embodiment relates to an ash material unloading device, comprising: a dust removal component 10, a dust collection component 20 and a control component 30. The dust removal component 10 comprises a dust removal pipeline 11 and a plurality of dust collectors 12. The dust collection component 20 comprises a dust collection bin 21, and the dust collection bin 21 and the plurality of dust collectors 12 are all connected through the dust removal pipeline 11. The control component 30 comprises a controller and a pressure sensor 31, the controller and the pressure sensor 31 are electrically connected, and the pressure sensor 31 is installed on the dust collection component 20.

[0027] Applying the technical solution of this embodiment, the dust collecting bin 21 and multiple dust collectors 12 are connected through the dust removal pipeline 11. The dust collector 12 is used to filter the polluted gas and discharge the filtered ash (dust, particulate matter, etc. in the polluted gas) into the dust collecting bin 21 through the dust removal pipeline 11. The controller and the pressure sensor 31 are electrically connected, and the controller can receive signals from the pressure sensor 31. The pressure sensor 31 is installed on the dust collecting component 20, and can detect the pressure in the empty pumping state. Once it is detected that it is within the empty pumping pressure range, it is determined that the dust is completely unloaded. And the detected signal is transmitted to the controller. The technical solution of this embodiment effectively solves the problem in the prior art that it is impossible to accurately judge whether the dust collector 12 is completely unloaded. It should be noted that the control component 30 is pre-set with an empty pumping pressure range value.

[0028] like Figure 1As shown, in some embodiments, the dust collecting assembly 20 further includes a plurality of first solenoid valves 32 and a plurality of level meters 33, the controller is electrically connected to the plurality of first solenoid valves 32 and the plurality of level meters 33, and the plurality of first solenoid valves 32 and the plurality of level meters 33 are arranged one by one with the plurality of dust collectors 12. The dust collector 12 has a material drop opening, the first solenoid valve 32 is arranged at the material drop opening, the level meter 33 is arranged in the dust collector 12, close to the material drop opening of the dust collector 12, the level meter 33 can detect the amount of ash in the dust collector 12, and transmit the detected signal to the controller, the controller can control the opening of the plurality of first solenoid valves 32 respectively, and thus realize the respective control of the opening and closing of the plurality of dust collectors 12. The level meter 33 can detect the change of the material height of the dust collector 12 in real time, the level meter 33 includes an ultrasonic generator and a receiver, the ultrasonic generator and the receiver are arranged at the top of the dust collector 12, facing the ash, and the height of the ash is detected by the reflection of the ultrasonic wave on the surface of the ash.

[0029] like Figure 1 As shown, in some embodiments, the dust collecting assembly 20 further includes a dust collecting pipeline 22 and a negative pressure fan 23. The first end of the dust collecting pipeline 22 is connected to the dust collecting bin 21, and the second end of the dust collecting pipeline 22 is connected to the negative pressure fan 23. The negative pressure fan 23 can maintain the negative pressure environment of the dust collecting bin 21 through the dust collecting pipeline 22. The dust collecting bin 21 is connected to the dust collector 12 through the dust collecting pipeline 11. Under the action of negative pressure, the dust is sucked into the dust collecting bin 21 through the dust collecting pipeline 11. The pressure sensor 31 is arranged on the dust collecting pipeline 22 and can detect the air extraction pressure. The negative pressure fan 23 is electrically connected to the controller, and the controller controls the opening and closing of the negative pressure fan 23. The dust collecting pipeline 11 is connected to the bottom of the dust collecting bin 21, so that the dust can fall into the dust collecting pipeline 11 more easily under the action of gravity.

[0030] It should be noted that the dust collecting assembly 20 also includes a bin wall vibrator. A vibration plate is fixedly connected to the dust collecting bin 21. The bin wall vibrator is arranged on the vibration plate. The vibration of the bin wall vibrator can prevent the ash material from agglomerating and sticking, thereby avoiding blockage of the ash discharge port 213.

[0031] In some embodiments, the dust collecting assembly 20 further includes a filter screen, which is arranged inside the dust collecting pipeline 22 and is close to the first end of the dust collecting pipeline 22. The filter screen uses a filter screen with a mesh size of 80-300, and a filter screen with a mesh size of 200 is used in this embodiment. The filter screen can prevent the dust in the dust collecting bin 21 from entering the negative pressure fan 23. When the dust in all dust collectors 12 is completely unloaded, multiple material level meters 33 all show that the dust is completely unloaded, and the pressure sensor 31 shows that it is in an empty pumping state, the negative pressure fan 23 is turned off.

[0032] like Figure 1As shown, in some embodiments, the dust collecting bin 21 has a straight section 211, an oblique section 212 and an ash discharge port 213, the oblique section 212 is arranged below the straight section 211, and the ash discharge port 213 is arranged at the bottom of the oblique section 212, and the control component 30 also includes a second solenoid valve, which is arranged at the ash discharge port 213, and the second solenoid valve is electrically connected to the controller, and the controller can control the opening of the second solenoid valve. The straight section 211 and the oblique section 212 are connected, and the diameter of the oblique section 212 gradually decreases in the direction away from the straight section 211, so that the ash is not easy to stick to the inner wall of the dust collecting bin 21. The ash discharge of multiple dust collectors 12 is completed, that is, multiple material level meters 33 all show that the amount of ash in the corresponding dust collector 12 is zero. When the amount of ash in the dust collecting bin 21 reaches the level that needs to be discharged, the negative pressure fan 23 is turned off, and the controller controls the second solenoid valve to open, discharge the ash in the dust collecting bin 21, and turn on the bin wall vibrator to make the discharge more complete.

[0033] The complete ash unloading process is as follows: the controller controls the negative pressure fan 23 to start working, the controller controls the dust collector 12 closest to the dust collecting bin 21 to start unloading, the first solenoid valve 32 corresponding to the dust collector 12 is opened for unloading, and the material level meter 33 corresponding to the dust collector 12 displays that the ash amount is zero. At the same time, the pressure sensor 31 detects that the pressure of the dust collecting component 20 is within the vacuum pressure range at this time, which proves that the dust collector 12 is completely unloaded. At this time, the controller controls the first solenoid valve corresponding to the dust collector 12 to close; the controller controls the next dust collector 12 adjacent to the dust collector 12 to repeat the same unloading operation until all dust collectors 12 have completed unloading; when the ash amount in the dust collecting bin 21 reaches the level that needs to be unloaded, the controller controls the negative pressure fan 23 to close, and controls the second solenoid valve to open for unloading.

[0034] like Figure 2 As shown, in some embodiments, the dust collector 12 includes a dust chamber 121 and a filter structure 122. The dust chamber 121 has a receiving space, and the filter structure 122 is disposed in the dust chamber 121. Exhaust gas is introduced into the dust chamber 121, and the gas filtered by the filter structure 122 is discharged from the filter structure 122, and the filtered ash is temporarily stored in the dust chamber 121.

[0035] like Figure 2As shown, in some embodiments, the filtering structure 122 includes a support plate 1221 and a plurality of ceramic tubes 1222, the support plate 1221 is connected to the inner wall of the dust removal chamber 121, the support plate 1221 has a plurality of first through holes, the plurality of first through holes and the plurality of ceramic tubes 1222 are arranged one by one, and the ceramic tubes 1222 pass through the first through holes and cooperate with the support plate 1221. The support plate 1221 is used to place the ceramic tubes 1222, and the ceramic tubes 1222 are used to filter the exhaust gas, the filtered gas is discharged from the inside of the ceramic tubes 1222, and the filtered ash falls along the outer wall of the ceramic tubes 1222.

[0036] like Figure 2 As shown, in some embodiments, the filter structure 122 further includes a flower plate 1223, which is arranged above the ceramic tube 1222 and abuts against the ceramic tube 1222. The flower plate 1223 can make the ceramic tube 1222 fit more closely with the support plate 1221, enhance the sealing effect, and prevent the exhaust gas from overflowing from the first through hole. The flower plate 1223 fits the inner wall of the support plate 1221, and the flower plate 1223 and the support plate 1221 are fastened by screws. The flower plate 1223 can also limit the ceramic tube 1222. The flower plate 1223 has a plurality of second through holes, and the plurality of second through holes and the plurality of ceramic tubes 1222 are arranged one by one. Multiple ceramic tubes 1222 all have a filtering section and a limiting section, the filtering section and the limiting section are connected, the filtering section passes through the first through hole, the limiting section is located between the support plate 1221 and the flower plate 1223, the support plate 1221 and the flower plate 1223 jointly fix the limiting section, the diameter of the limiting section is larger than the diameter of the first through hole, the diameter of the second through hole is between the inner diameter and the outer diameter of the limiting section, the support plate 1221 and the flower plate 1223 can respectively resist the limiting section to fix the limiting section well, and the second through hole does not affect the discharge of the filtered gas.

[0037] Based on the above, we can know that Figure 3 In the process shown, the system is first debugged: the system negative pressure range (air-pumping pressure range value) of the negative pressure ash conveying system (dust collecting component 20) in the air-pumping state without ash is measured and written into the control component 30. When the operation starts, the negative pressure ash conveying system is automatically turned on first, and the first chamber (dust collector 12) starts to unload ash, and the ash enters the ash conveying pipeline (dust collecting pipeline 22). The control component 30 starts to read the negative pressure value displayed by the pressure sensor 31 and compares it with the system negative pressure range in the air-pumping state without ash. When the pressure value read by the pressure sensor 31 is within the air-pumping value range and the material level meter 33 reads that the amount of ash is empty, it automatically switches to the next chamber to unload ash after a delay, and so on. Delaying for a period of time before switching to the next chamber to unload ash can further ensure that the ash unloading in the chamber is complete.

[0038] Control process of control component 30: When the pressure value read by pressure sensor 31 is within the empty pumping value range, and the level meter 33 reads that there is material in the bin, it runs for a period of time. If the status of pressure sensor 31 and level meter 33 has not changed, control component 30 reports "bin unloading system failure" and controls the ash unloading operation to stop. When the pressure value read by pressure sensor 31 is not within the empty pumping value range, and level meter 33 reads that there is no material in the bin. After running for a period of time, if the status of pressure sensor 31 and level meter 33 has not changed, control component 30 reports "please check the empty pumping pressure range" and controls the ash unloading operation to stop. If the negative pressure read by pressure sensor 31 is getting higher and higher and exceeds the empty pumping value range, control component 30 reports "overpressure" and controls to stop running. When all bins are unloaded, there is a delay, and control component 30 automatically stops running.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ash discharging device, characterized in that: include: A dust removal assembly (10), the dust removal assembly (10) comprising a dust removal pipeline (11) and a plurality of dust collectors (12); A dust collecting component (20), the dust collecting component (20) comprising a dust collecting bin (21), the dust collecting bin (21) and the plurality of dust collectors (12) being connected via the dust collecting pipeline (11); A control component (30), the control component (30) comprising a controller and a pressure sensor (31), the controller and the pressure sensor (31) are electrically connected, and the pressure sensor (31) is installed on the dust collecting component (20).

2. The ash removal device according to claim 1, characterized in that: The dust collecting assembly (20) further comprises a plurality of first solenoid valves (32) and a plurality of material level meters (33); the controller is electrically connected to the plurality of first solenoid valves (32) and the plurality of material level meters (33); and the plurality of first solenoid valves (32) and the plurality of material level meters (33) are arranged in one-to-one correspondence with the plurality of dust collectors (12).

3. The ash removal device according to claim 1, characterized in that: The dust collecting assembly (20) further comprises a dust collecting pipeline (22) and a negative pressure fan (23); a first end of the dust collecting pipeline (22) is connected to the dust collecting bin (21); a second end of the dust collecting pipeline (22) is connected to the negative pressure fan (23); and the pressure sensor (31) is arranged on the dust collecting pipeline (22).

4. The ash removal device according to claim 3, characterized in that: The dust collecting assembly (20) further comprises a filter screen, which is arranged inside the dust collecting pipeline (22) and is close to the first end of the dust collecting pipeline (22).

5. The ash removal device according to claim 1, characterized in that: The dust collecting bin (21) comprises a straight cylinder section (211), an inclined cylinder section (212) and an ash discharge port (213), wherein the inclined cylinder section (212) is arranged below the straight cylinder section (211), and the ash discharge port (213) is arranged at the bottom of the inclined cylinder section (212), and the control component (30) further comprises a second solenoid valve, wherein the second solenoid valve is arranged at the ash discharge port (213), and the second solenoid valve is electrically connected to the controller.

6. The ash removal device according to claim 1, characterized in that: The dust collector (12) comprises a dust removal chamber (121) and a filtering structure (122); the dust removal chamber (121) has a receiving space, and the filtering structure (122) is arranged in the dust removal chamber (121).

7. The ash removal device according to claim 6, characterized in that: The filtering structure (122) comprises a support plate (1221) and a plurality of ceramic tubes (1222); the support plate (1221) is connected to the inner wall of the dust removal chamber (121); the support plate (1221) has a plurality of first through holes; the plurality of first through holes and the plurality of ceramic tubes (1222) are arranged in a one-to-one correspondence; the ceramic tubes (1222) pass through the first through holes and cooperate with the support plate (1221).

8. The ash removal device according to claim 7, characterized in that: The filtering structure (122) further comprises a flower plate (1223), wherein the flower plate (1223) is arranged above the ceramic tube (1222) and abuts against the ceramic tube (1222), the flower plate (1223) and the inner wall of the support plate (1221) are in contact with each other, and the flower plate (1223) and the support plate (1221) are fastened together by screws.

9. The ash removal device according to claim 8, characterized in that: The flower plate (1223) has a plurality of second through holes, and the plurality of second through holes and the plurality of ceramic tubes (1222) are arranged in a one-to-one correspondence.

10. The ash removal device according to claim 9, characterized in that: The plurality of ceramic tubes (1222) each comprises a filtering section and a limiting section, the filtering section and the limiting section are connected, the filtering section passes through the first through hole, the limiting section is located between the support plate (1221) and the flower plate (1223), the diameter of the limiting section is greater than the diameter of the first through hole, and the diameter of the second through hole is between the inner diameter and the outer diameter of the limiting section.

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