Cloth bag dust removing and conveying device

Abstract

The utility model relates to the technical field of dust removal, and provides a cloth bag dust removal and ash conveying device which comprises an air source and a plurality of discharging units, and the air source is connected with a plurality of air supply pipelines; the multiple discharging units are arranged in parallel, each discharging unit communicates with an air source through an air supply pipeline, and the air supply pipelines communicate with discharging mechanisms of the discharging units and are used for discharging and conveying ash to the discharging mechanisms. The bag-type dust removal and conveying device provided by the embodiment of the utility model is provided with the plurality of unloading units, dust in one unloading unit can be unloaded, and the other unloading units are normally matched with the dust removal units above the unloading units to remove dust, so that shutdown is not needed in the dust unloading process of one unloading unit, and the dust removal efficiency is improved. And the other unloading units can work normally, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal, in particular to a bag dust removal ash conveying device. Background Art

[0002] At present, the most efficient dust removal technology in the industries of iron and steel, metallurgy, coking and thermal power plants is bag dust removal, so it is the most widely used. Bag dust removal adopts the bag dust removal method. After the denitrification flue gas is heated by the economizer (the flue gas temperature is 100-160 °C), it enters the bag filter for dust removal treatment. The bag filter is a dry dust filtering device, which is suitable for collecting fine, dry and non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt. The dust-containing gas is filtered by the filtering action of the fiber fabric. When the dust-containing gas enters the bag filter, the dust with large particles and large specific gravity settles down due to the action of gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained and the gas is purified.

[0003] In the prior art, after the bag filter is used for a period of time, too much dust accumulated in the ash hopper will cause the ash hopper to collapse, and it is necessary to unload the dust in the ash hopper. During the process of unloading the dust in the ash hopper, the bag filter needs to be shut down, which affects the working efficiency. Summary of the Utility Model

[0004] The utility model provides a bag dust removal ash conveying device to solve the defect that the ash hopper unloading in the prior art needs to shut down the machine, which affects the working efficiency.

[0005] The utility model provides a bag dust removal ash conveying device, including:

[0006] An air source, which is connected with a plurality of air supply pipelines;

[0007] A plurality of unloading units, which are arranged in parallel. Each unloading unit is communicated with the air source through one of the air supply pipelines. The air supply pipeline is communicated with the unloading mechanism of the unloading unit for unloading and conveying ash to the unloading mechanism.

[0008] According to a bag dust removal ash conveying device provided by an embodiment of the utility model, each unloading unit includes an ash conveying mechanism and a plurality of unloading mechanisms. Each unloading mechanism includes a hopper, a discharger and a bin pump which are arranged in sequence and communicated. The ash conveying mechanism is communicated with the bin pumps of the plurality of unloading mechanisms.

[0009] According to a bag dust removal ash conveying device provided by an embodiment of the utility model, the ash conveying mechanism includes a feeding pipeline and a discharge valve arranged on the feeding pipeline. The feeding pipeline is communicated with the bin pumps of the plurality of unloading mechanisms, and the discharge valve is communicated with the air source;

[0010] The pressurizing inlet of the bin pump is communicated with the air supply pipeline through a pressurizing valve.

[0011] According to a bag dust removal ash conveying device provided by an embodiment of the present invention, the bin pump of each discharging mechanism is communicated with a hopper through an exhaust pipeline, and an exhaust valve is arranged on the exhaust pipeline.

[0012] According to a bag dust removal ash conveying device provided by an embodiment of the present invention, the air inlet of the bin pump is communicated with the corresponding air supply pipeline through an air inlet valve.

[0013] According to a bag dust removal ash conveying device provided by an embodiment of the present invention, a material level trigger is arranged on each hopper, and the material level trigger is used to monitor the material level of the pulverized ash in the hopper.

[0014] According to a bag dust removal ash conveying device provided by an embodiment of the present invention, the material level trigger is electrically connected to a controller, and the controller is respectively electrically connected to the air inlet valve, the exhaust valve, the pressurizing valve and the discharging valve.

[0015] According to a bag dust removal ash conveying device provided by an embodiment of the present invention, the controller is electrically connected to an alarm.

[0016] According to a bag dust removal ash conveying device provided by an embodiment of the present invention, a pressure measuring element is arranged on each bin pump.

[0017] According to a bag dust removal ash conveying device provided by an embodiment of the present invention, the discharger is a star discharger, and a gas locking valve is arranged between the star discharger and the hopper.

[0018] The bag dust removal ash conveying device provided by the embodiment of the present invention has a plurality of discharging units, and can discharge the dust in one of the discharging units, and the remaining discharging units normally cooperate with the dust removal unit above them to perform dust removal. Therefore, during the ash discharging process of one of the discharging units, there is no need to stop the machine, and the remaining discharging units can work normally, thereby improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of a bag dust removal ash conveying device provided by an embodiment of the present invention;

[0021] Figure 2It is a schematic structural diagram of the unloading mechanism provided by the embodiment of the present utility model.

[0022] Reference numerals:

[0023] 1. Air source; 11. First air supply pipeline; 12. Second air supply pipeline;

[0024] 2. First unloading unit;

[0025] 21. First unloading mechanism; 211. Hopper No. 1; 212. Unloader No. 1; 213. Silo pump No. 1; 214. Level trigger No. 1; 215. Exhaust pipeline No. 1; 216. Exhaust valve No. 1; 217. Pressure measuring element No. 1;

[0026] 22. Second unloading mechanism;

[0027] 23. Feeding pipeline No. 1; 24. Discharge valve No. 1; 25. Intake valve No. 1; 26. Booster valve No. 1; 27. Solenoid valve box No. 1;

[0028] 3. Second unloading unit;

[0029] 31. Third unloading mechanism; 32. Fourth unloading mechanism; 33. Feeding pipeline No. 2; 34. Discharge valve No. 2; 35. Intake valve No. 2; 36. Booster valve No. 2; 37. Solenoid valve box No. 2. Detailed implementation manners

[0030] The following further describes in detail the implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0031] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0033] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0035] The following Figure 1 and Figure 2 describe the bag dust removal ash conveying device of the embodiments of the present utility model.

[0036] The embodiments of the present utility model provide a bag dust removal ash conveying device, Figure 1 illustrating a schematic structural diagram of the bag dust removal ash conveying device provided by the embodiments of the present utility model, as Figure 1 shown, the bag dust removal ash conveying device includes a gas source 1 and a plurality of discharging units connected to the gas source 1.

[0037] Among them, the gas source 1 is connected with a plurality of gas supply pipelines, the number of the gas supply pipelines is equal to the number of the discharging units, the plurality of discharging units are arranged in parallel, and each discharging unit is communicated with the gas source 1 through a gas supply pipeline, so the plurality of discharging units are communicated with the gas source 1 through a plurality of gas supply pipelines.

[0038] It is understandable that the gas in the gas source 1 enters the ash discharging mechanism of the ash discharging unit through the gas supply pipeline, and is used for ash discharging and ash conveying of the ash discharging mechanism.

[0039] It is understandable that each ash discharging unit can work independently, so that ash can be discharged from one of the ash discharging units, while the remaining ash discharging units are all working normally.

[0040] The bag dust removal ash conveying device provided by the embodiment of the present utility model has a plurality of ash discharging units, and can discharge ash from the dust in one of the ash discharging units, and the remaining ash discharging units cooperate with the dust removal unit above them normally for dust removal. Therefore, it is not necessary to stop the machine during the ash discharging process of one of the ash discharging units, and the remaining ash discharging units can work normally, thereby improving the work efficiency.

[0041] In the embodiment of the present utility model, the gas source 1 can come from a compressed gas source station. The gas source 1 adopts a gas storage tank, and a measuring device is arranged on the gas storage tank to monitor the gas parameters in the gas storage tank, such as the gas pressure and gas density in the gas storage tank.

[0042] In an embodiment of the present utility model, each ash discharging unit includes an ash conveying mechanism and a plurality of ash discharging mechanisms. Each ash discharging mechanism includes a hopper, a rotary air lock valve and a pressure vessel pump which are arranged in sequence and communicated. The ash conveying mechanism is communicated with the pressure vessel pumps of the plurality of ash discharging mechanisms.

[0043] It is understandable that each ash discharging unit can include a plurality of ash discharging mechanisms, and each ash discharging mechanism includes a hopper, a rotary air lock valve and a pressure vessel pump which are arranged from top to bottom in sequence.

[0044] It should be noted that a dust removal unit is arranged above each ash discharging unit. After the dust-containing gas enters the dust removal unit, the dust with large particles and high specific gravity after being dust-removed by the dust removal unit settles down due to the action of gravity and falls into the hopper. After working for a period of time, there is more dust accumulated in the hopper and needs to be cleaned. When the hopper needs to be cleaned in this embodiment, the dust in the hopper falls into the pressure vessel pump through the rotary air lock valve, so as to realize ash discharging, and the dust is conveyed through the ash conveying mechanism connected with the pressure vessel pump, so as to realize ash conveying.

[0045] It should be noted that there are a plurality of ash discharging units in this embodiment. Only one of the ash discharging units needs to carry out ash discharging and conveying, while the remaining ash discharging units can be in the normal state of collecting the dust falling from the dust removal unit, that is, in the dust removal working state.

[0046] Furthermore, the rotary air lock valve is a star-shaped rotary air lock valve, and a gas locking valve is arranged between the star-shaped rotary air lock valve and the hopper, and the gas locking valve can effectively lock the flue gas without leakage.

[0047] In an embodiment of the present utility model, the ash conveying mechanism includes a material conveying pipeline and a discharge valve provided on the material conveying pipeline. The material conveying pipeline is communicated with the silo pumps of a plurality of discharging mechanisms, and the discharge valve is communicated with the air source 1; the boosting inlet of the silo pump is communicated with the air supply pipeline through a boosting valve.

[0048] It can be understood that in each discharging unit, the silo pumps of a plurality of discharging mechanisms are communicated with the material conveying pipeline, and the silo pumps are communicated with the air supply pipeline through boosting valves. When it is necessary to transport the dust in the silo pumps, the discharge valve and the boosting valve on the material conveying pipeline are opened, and the air source 1 enters the silo pumps through the boosting valve, so as to convey the dust in the silo pumps to the dust storage device through the material conveying pipeline by means of boosting gas.

[0049] Furthermore, in each discharging unit, a plurality of discharging mechanisms are arranged side by side. The material conveying pipeline includes a first conveying pipe section and a second conveying pipe section. The bottoms of the silo pumps of a plurality of discharging mechanisms are sequentially connected end to end through a conveying pipeline. Then, a first conveying pipe section is connected between the silo pumps of two adjacent discharging mechanisms, and the silo pump at the head is communicated with the air supply pipeline through a boosting valve. The silo pump at the tail is connected with the second conveying pipe section, and the discharge valve is arranged on the second conveying pipe section. When it is necessary to convey the ash in the silo pumps, just open the discharge valve and the boosting valve.

[0050] In an embodiment of the present utility model, the air inlet of the silo pump is communicated with the corresponding air supply pipeline through an air inlet valve.

[0051] It can be understood that each discharging unit further includes an air inlet pipeline. One end of the air inlet pipeline is communicated with the air supply pipeline, and the other end of the air inlet pipeline has a plurality of outlets which are respectively communicated with the air inlets of the silo pumps of a plurality of discharging mechanisms. The air inlet valve is arranged on the air inlet pipeline, and air supply to the silo pumps can be realized through the air inlet valve.

[0052] Furthermore, in each discharging unit, the silo pump at the head is communicated with the air supply pipeline through a boosting pipeline, and the boosting valve is arranged on the boosting pipeline.

[0053] In an embodiment of the present utility model, the silo pump of each discharging mechanism is communicated with a hopper through an exhaust pipeline, and an exhaust valve is arranged on the exhaust pipeline.

[0054] It can be understood that the silo pump of each discharging mechanism has an air inlet, so an exhaust port is arranged on the silo pump. The exhaust port can be directly communicated with the atmosphere, or communicated with the atmosphere or a gas collection device through an exhaust pipeline. In this embodiment, the silo pump of each discharging mechanism is communicated with the hopper above it through an exhaust pipeline, and the exhaust of the silo pump is realized through the exhaust valve on the exhaust pipeline.

[0055] It should be noted that in this embodiment, connecting the exhaust port of the silo pump with the hopper can provide a gas source power for the conveying of dust from the hopper to the silo pump, thereby improving the ash discharging efficiency of the powder ash.

[0056] In one embodiment of the present utility model, a material level trigger is provided on each ash hopper, and the material level trigger is used to send a trigger signal when the ash material in the ash hopper reaches a high material level.

[0057] It can be understood that a material level trigger is provided on each ash hopper, and the material level trigger is used to monitor the material level of the pulverized ash in the ash hopper and send a trigger signal when the ash material in the ash hopper reaches a high material level to perform ash discharging and ash conveying for the corresponding ash hopper.

[0058] Furthermore, the material level trigger is electrically connected to a controller, and the controller is respectively electrically connected to an intake valve, an exhaust valve, a booster valve, and a discharge valve.

[0059] It can be understood that when the material level trigger monitors that the ash material in the ash hopper reaches a high material level, it sends a trigger signal to the controller. When the controller receives the trigger signal, it first makes the dust in the ash hopper fall into the corresponding silo pump through a discharger to achieve ash discharging; then conveys the dust in the silo pump through a conveying pipeline to achieve ash conveying.

[0060] It can be understood that when the controller receives the trigger signal, it controls the actions of the intake valve, the exhaust valve, the booster valve, and the discharge valve through the controller to automatically perform ash discharging and ash conveying, thereby improving work efficiency.

[0061] In one embodiment of the present utility model, the material level trigger is electrically connected to a controller, and the controller is electrically connected to an alarm.

[0062] It can be understood that when the material level trigger monitors that the ash material in the ash hopper reaches a high material level, it sends a trigger signal to the controller. When the controller receives the trigger signal, it sends an alarm signal to the alarm, and the alarm is used to remind of ash discharging and ash conveying operations.

[0063] It should be noted that in this embodiment, low material level alarm triggering is adopted and high material level alarm is not triggered. That is, when the ash material in the ash hopper is at a low position, the alarm is triggered for low material level, and when the ash material in the ash hopper is at a high position, the alarm is not triggered.

[0064] It can be understood that when the dust in the ash hopper is at a low material level, the material level trigger continuously triggers and thus the alarm alarms. At this time, the ash hopper triggers a low material level alarm; when the dust in the ash hopper is at a high material level, the low material level alarm is not triggered at this time, and ash discharging and ash conveying operations need to be performed.

[0065] It should be noted that according to whether the low material level alarm is triggered, if the low material level alarm is not triggered, it is preferably to perform ash discharging and ash conveying on the ash hopper where the alarm is not triggered.

[0066] It should be noted that if the low-level alarm is triggered, the ash discharging and ash conveying are sequentially performed on multiple discharging mechanisms according to the set time of the timing control, so as to control the ash discharging and ash conveying in two ways, namely timing and triggering. Timing means performing ash discharging and ash conveying according to the set time of the timing control as described above, and triggering means that the low-level alarm is not triggered (the low-level alarm disappears). Among them, triggering has a higher priority.

[0067] In another embodiment of the present utility model, when a high-level occurs, the alarm uses an audible and visual alarm.

[0068] In an embodiment of the present utility model, a pressure measuring element is provided on each bin pump.

[0069] It can be understood that when conveying the dust in the bin pump, the pressure of the bin pump is monitored through the pressure measuring element. When the pressure measurement value obtained by the pressure measuring element is greater than the preset value, it indicates that the pressure of the bin pump is too high, and the discharge valve, booster valve, and intake valve need to be continuously opened until the pressure measurement value is less than the preset value.

[0070] The following combines Figures 1 to 2 Describe a specific embodiment of the present utility model. The bag dust removal ash conveying device includes a gas source 1, a discharging unit, and a controller. In this embodiment, there are two discharging units, and each discharging unit includes two discharging mechanisms.

[0071] The gas source 1 is connected with two gas supply pipelines, namely the first gas supply pipeline 11 and the second gas supply pipeline 12.

[0072] The first discharging unit 2 includes a first ash conveying mechanism, a first discharging mechanism 21, a second discharging mechanism 22, and a 1# material conveying pipeline 23.

[0073] The first discharging mechanism 21 includes a 1# ash hopper 211, a 1# discharger 212, and a 1# bin pump 213 that are sequentially arranged and connected. A 1# level trigger 214 is provided on the 1# ash hopper 211, a 1# pressure measuring element 217 is provided on the 1# bin pump 213, the exhaust port of the 1# bin pump 213 is connected to the 1# ash hopper 211 through a 1# exhaust pipeline 215, and a 1# exhaust valve 216 is provided on the 1# exhaust pipeline 215.

[0074] The second discharging mechanism includes a 2# ash hopper, a 2# discharger, and a 2# bin pump that are sequentially arranged and connected. A 2# level trigger is provided on the 2# ash hopper, a 2# pressure measuring element is provided on the 2# bin pump, the exhaust port of the 2# bin pump is connected to the 2# ash hopper through a 2# exhaust pipeline, and a 2# exhaust valve is provided on the 2# exhaust pipeline.

[0075] The air inlet of the 1# silo pump 213 and the air inlet of the 2# silo pump are connected to the first air supply pipeline 11 through the 1# air inlet pipeline. A 1# air inlet valve 25 is provided on the 1# air inlet pipeline. The 1# silo pump 213 is connected to the 1# air inlet pipeline through the 1# pressurization pipeline. A 1# pressurization valve 26 is provided on the 1# pressurization pipeline. Both the 1# silo pump 213 and the 2# silo pump are connected to the 1# material conveying pipeline 23. A 1# discharge valve 24 is provided on the pipeline between the 2# silo pump and the 1# material conveying pipeline 23.

[0076] The second discharging unit 3 includes a second ash conveying mechanism, a third discharging mechanism 31, a fourth discharging mechanism 32 and a 2# material conveying pipeline 33.

[0077] The third discharging mechanism 31 includes a 3# ash hopper, a 3# discharger and a 3# silo pump which are arranged in sequence and connected. A 3# material level trigger is provided on the 3# ash hopper. A 3# pressure measuring element is provided on the 3# silo pump. The exhaust port of the 3# silo pump is connected to the 3# ash hopper through the 3# exhaust pipeline. A 3# exhaust valve is provided on the 3# exhaust pipeline.

[0078] The fourth discharging mechanism includes a 4# ash hopper, a 4# discharger and a 4# silo pump which are arranged in sequence and connected. A 4# material level trigger is provided on the 4# ash hopper. A 4# pressure measuring element is provided on the 4# silo pump. The exhaust port of the 4# silo pump is connected to the 4# ash hopper through the 4# exhaust pipeline. A 4# exhaust valve is provided on the 4# exhaust pipeline.

[0079] The air inlet of the 3# silo pump and the air inlet of the 4# silo pump are connected to the second air supply pipeline 12 through the 2# air inlet pipeline. A 2# air inlet valve 35 is provided on the 2# air inlet pipeline. The 3# silo pump is connected to the 2# air inlet pipeline through the 2# pressurization pipeline. A 2# pressurization valve 36 is provided on the 2# pressurization pipeline. Both the 3# silo pump and the 4# silo pump are connected to the 2# material conveying pipeline 33. A 2# discharge valve 34 is provided on the pipeline between the 4# silo pump and the 2# material conveying pipeline 33.

[0080] The controller includes a 1# solenoid valve box 27 and a 2# solenoid valve box 37. The 1# solenoid valve box 27 is connected to the first air supply pipeline 11. The first air supply pipeline 11 supplies working air source 1 to the 1# solenoid valve box 27. The 1# solenoid valve box 27 is used to control the actions of the valves of the first discharging unit 2. The 2# solenoid valve box 37 is connected to the second air supply pipeline 12. The second air supply pipeline 12 supplies working air source 1 to the 2# solenoid valve box 37. The 2# solenoid valve box 37 is used to control the actions of the valves of the second discharging unit 3.

[0081] The working principle of the bag dust removal ash conveying device of the present utility model:

[0082] When the low material level alarms are triggered simultaneously in the 1# ash hopper 211, 2# ash hopper, 3# ash hopper and 4# ash hopper, ash discharging and ash conveying are started sequentially in a timed manner.

[0083] If the low-level alarm disappears in Hopper 1# (211), Hopper 2#, Hopper 3#, or Hopper 4#, the ash discharge and ash transportation are performed for the hopper where the low-level alarm has disappeared.

[0084] It should be noted that the first ash discharge mechanism 21 and the second ash discharge mechanism 22 are grouped as the first group, and the third ash discharge mechanism 31 and the fourth ash discharge mechanism 32 are grouped as the second group. They discharge ash in turn by group until the hopper triggers the low-level alarm, and then the corresponding silo pump and main intake valve are closed. When the low-level alarm disappears in Hopper 1# (211) or Hopper 2#, the ash discharge and ash transportation are performed for Hopper 1# (211) and Hopper 2# in sequence. When the low-level alarm disappears in Hopper 3# or Hopper 4#, the ash discharge and ash transportation are performed for Hopper 3# and Hopper 4# in sequence.

[0085] Specifically, the control sequence for ash discharge and ash transportation of Hopper 1# (211), Hopper 2#, Hopper 3#, and Hopper 4# in sequence is as follows:

[0086] Open the 1# intake valve 25 and the 1# exhaust valve 216, start the 1# ash discharger 212 after a 5-second delay, so that the dust in Hopper 1# (211) falls into the 1# silo pump 213, close the 1# ash discharger 212 and the 1# exhaust valve 216, open the 1# booster valve 26 and the 1# discharge valve 24, so that the dust in the 1# silo pump 213 is transported through the 1# conveying pipeline 23. After running for 5 minutes, close the 1# silo pump 213.

[0087] Open the 2# exhaust valve, start the 2# ash discharger after a 5-second delay, so that the dust in Hopper 2# falls into the 2# silo pump, close the 2# ash discharger and the 2# exhaust valve, and transport the dust in the 2# silo pump through the 1# conveying pipeline 23. After running for 5 minutes, close the 2# silo pump, close the 1# booster valve 26 and the 1# intake valve 25, and close the 1# discharge valve 24 after a 5-second delay.

[0088] Open the 2# intake valve 35 and the 3# exhaust valve, start the 3# ash discharger after a 5-second delay, so that the dust in Hopper 3# falls into the 3# silo pump, close the 3# ash discharger and the 3# exhaust valve, open the 2# booster valve 36 and the 2# discharge valve 34, so that the dust in the 3# silo pump is transported through the 2# conveying pipeline 33. After running for 5 minutes, close the 3# silo pump.

[0089] Open the 4# exhaust valve, start the 4# ash discharger after a 5-second delay, so that the dust in Hopper 4# falls into the 4# silo pump, close the 4# ash discharger and the 4# exhaust valve, and transport the dust in the 4# silo pump through the 2# conveying pipeline 33. After running for 5 minutes, close the 4# silo pump, close the 2# booster valve 36 and the 2# intake valve 35, and close the 2# discharge valve 34 after a 5-second delay.

[0090] It should be noted that during this period, when the low hopper level alarm disappears, the corresponding unloader and silo pump stop running until all the low hopper level alarms disappear. Then, the ash unloading and ash conveying stop, and the timing program continues to run. When the time arrives and the low hopper level alarm is triggered, it starts running automatically.

[0091] It should be noted that during the ash unloading and ash conveying processes of Hopper 1# 211, Hopper 2#, Hopper 3#, and Hopper 4# in sequence, when the low hopper level alarm disappears, the corresponding unloader and silo pump stop running until all the low hopper level alarms disappear. Then, the ash unloading and ash conveying stop, and the timing program continues to run. When the time arrives and the low hopper level alarm is triggered, it starts running automatically.

[0092] The bag dust removal ash conveying device provided by the embodiment of the present utility model, without increasing additional equipment costs, more stably solves the problems of high hopper level alarms caused by untimely cleaning of ash accumulation in the hoppers of bag dust collectors, and the impact on work efficiency due to the need to stop the machine for hopper unloading.

[0093] For the bag dust removal ash conveying device provided by the embodiment of the present utility model, the first unloading mechanism 21 and the second unloading mechanism 22 are taken as the first group, corresponding to the 1# intake valve 25, and the third unloading mechanism 31 and the fourth unloading mechanism 32 are taken as the second group, corresponding to the 2# intake valve 35. Through timing, they are started at time intervals to alternately unload and convey ash in sequence, thus forming different partitions in the hopper. The first-started group can first let the ash fall to the lower part to form a buffer zone to prevent the occurrence of high hopper levels, and the later-unloading group then continues to let the dust in the buffer zone fall downward, solving the ash accumulation in the hopper in the first time, ensuring timely and sequential alternate ash unloading and ash conveying, and further ensuring the normal operation of the ash conveying system of the bag dust removal system, timely outputting the ash in the hopper, avoiding the occurrence of the phenomenon of excessive high hopper levels, and avoiding the problem of the collapse of the silo due to long-term high silo levels.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A bag dust removal ash conveying device, characterized in that, Comprising: An air source, with a plurality of air supply pipelines connected to the air source; A plurality of discharging units, the plurality of discharging units being arranged in parallel. Each discharging unit is communicated with the air source through one of the air supply pipelines, and the air supply pipeline is communicated with the discharging mechanism of the discharging unit for ash discharging and ash conveying of the discharging mechanism; Each discharging unit includes an ash conveying mechanism and a plurality of discharging mechanisms. Each discharging mechanism includes a hopper, a discharger and a silo pump which are arranged in sequence and communicated. The silo pump is communicated with the hopper through an exhaust pipeline, and an exhaust valve is arranged on the exhaust pipeline. The ash conveying mechanism is communicated with the silo pumps of the plurality of discharging mechanisms; 2. The ash transportation device for bag dust removal according to claim 1, wherein The ash conveying mechanism includes a feeding pipeline and a discharging valve arranged on the feeding pipeline. The feeding pipeline is communicated with the silo pumps of the plurality of discharging mechanisms, and the discharging valve is communicated with the air source; The boosting inlet of the silo pump is communicated with the air supply pipeline through a boosting valve; 3. The dust removal ash conveying device with cloth bag according to claim 2, characterized in that, The air inlet of the silo pump is communicated with the corresponding air supply pipeline through an air inlet valve; 4. The bag dust removal ash conveying device according to claim 3, characterized in that, A level trigger is arranged on each hopper, and the level trigger is used for monitoring the powder ash level in the hopper; 5. The bag dust removal ash conveying device according to claim 4, characterized in that, The level trigger is electrically connected to a controller, and the controller is respectively electrically connected to the air inlet valve, the exhaust valve, the boosting valve and the discharging valve; 6. The dust removal ash conveying device using cloth bags according to claim 5, characterized in that, The controller is electrically connected to an alarm; 7. The dust removal ash conveying device for bag filters according to any one of claims 1 to 6, characterized in that, A pressure measuring element is arranged on each silo pump; 8. The bag dust removal ash conveying device according to any one of claims 1 to 6, characterized in that, The discharger is a star discharger, and a gas locking valve is arranged between the star discharger and the hopper.

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