Rectangular fly ash storage cavern facilitating discharging

Abstract

The invention provides a rectangular coal ash storage cavern facilitating discharging, and relates to the field of rectangular large-reserve underground and semi-underground coal ash storage cavern discharging devices. A rectangular coal ash storage cavern facilitating discharging comprises a ground, a coal ash storage cavern body is arranged in the ground, a discharging groove is formed in the position, away from the coal ash storage cavern body, of the ground, an inflation box assembly is arranged in the coal ash storage cavern body, and the inflation box assembly comprises a protection shell, a transition bin, a gasification plate and a Roots blower. A first elevator is arranged in the discharging groove, a first outflow pipe is arranged at a discharging port of the coal ash storage cavern, the first outflow pipe is fixedly connected with a butterfly valve far away from the coal ash storage cavern, the butterfly valve is fixedly connected with a second outflow pipe far away from the first outflow pipe, and the second outflow pipe is communicated with a feeding port of the first elevator. The fly ash is fluidized by arranging the aeration tank assembly, so that the fly ash can flow out from the discharge port, the emptying rate of the fly ash in the rectangular fly ash warehouse can reach 95% or above, and the unloading condition is improved.

Description

Technical Field

[0001] The invention relates to the technical field of unloading devices for rectangular large-capacity underground and semi-underground fly ash storages, in particular to a rectangular fly ash storage that is convenient for unloading. Background Art

[0002] my country's raw coal production areas are mainly concentrated in the north. A large number of thermal power plants are built near coal mines, which produce a large amount of fly ash. The main use of fly ash is building materials. Due to the influence of seasons, the north is cold in winter and does not have construction conditions. The amount of building materials used is very small, resulting in a large amount of fly ash with nowhere to use in winter. Fly ash particles are very fine, and open-air storage will cause serious environmental pollution, so it must be stored in a warehouse.

[0003] According to our research, there are two main types of fly ash storage: circular storage and rectangular storage. Circular storage is generally designed with unloading equipment, which can realize mechanical unloading, but circular storage has disadvantages such as large investment and small storage capacity. Rectangular storage can take advantage of the terrain and be designed according to local conditions. It has low investment and large storage capacity. Rectangular storage is more commonly used to store fly ash. The biggest problem of rectangular storage is that it is difficult to unload and the unloading rate is not high. The traditional unloading methods are vacuum pump suction, forklift reverse transportation, etc., which have poor operating environment and are prone to safety accidents. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a rectangular fly ash storage bin that is easy to unload, which can improve the unloading operation environment of the rectangular fly ash storage bin, increase the unloading rate of the storage bin, and reduce the environmental and safety risks of unloading the rectangular fly ash storage bin.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a rectangular fly ash storage tank that is easy to unload, including a ground, a coal ash storage tank is arranged inside the ground, a discharge chute is arranged on the ground away from the coal ash storage tank, an aeration box assembly is arranged inside the coal ash storage tank, the aeration box assembly includes a protective shell, a transition bin, a gasification plate and a Roots blower, a first elevator is arranged inside the discharge chute, a first outflow pipe is arranged at the discharge port of the coal ash storage tank, the first outflow pipe is fixedly connected to a butterfly valve away from the coal ash storage tank, the butterfly valve is fixedly connected to a second outflow pipe away from the first outflow pipe, the second outflow pipe leads to the feed inlet of the first elevator, a first feed pipe is arranged at the discharge port of the first elevator, the upper surface of the ground is fixedly connected to the second elevator, the first feed pipe leads to the feed inlet of the second elevator, the second feed pipe is arranged at the discharge port of the second elevator, a bracket is arranged on the upper surface of the ground away from the second elevator, the top of the bracket is fixedly connected to a bulk bin, and the second feed pipe leads to the bulk bin. The purpose of providing the aeration box assembly is to facilitate the fluidization of the fly ash in the silo, thereby increasing the fluidity of the fly ash and improving the bottom unloading rate of the silo. The purpose of providing the butterfly valve is to facilitate the discharge amount. The purpose of providing the first elevator and the second elevator is to facilitate the transportation of the coal ash flowing out of the coal ash storage tank to the bulk bin. The purpose of providing the bracket is to facilitate the support of the bulk bin.

[0008] Preferably, the protective shell is fixedly connected to the inside of the coal ash storage, the transition bin and the protective shell are fixedly connected, and the gasification plate is fixedly connected to the upper surface of the transition bin. The protective shell is provided to facilitate the protection of the Roots blower, and the gasification plate is provided to facilitate the dispersion of the wind force provided by the Roots blower.

[0009] Preferably, the Roots blower is fixedly connected to the lower surface of the inner part of the protective shell, the air pipe connected to the output end of the Roots blower is passed into the transition bin, and the air pipe connected to the input end of the Roots blower is communicated with the external air. The Roots blower is provided to facilitate the inflation into the transition bin, so that the gas flows out from the gasification plate, and then the fly ash is fluidized to increase the fluidity.

[0010] Preferably, a second ventilation pipe is provided on the top of the coal ash storage tank, a second filter plate is fixedly connected to the bottom of the second ventilation pipe, and a cover plate is provided on the top of the second ventilation pipe. The second ventilation pipe is provided to facilitate the excess gas to flow out when the Roots blower injects air into the coal ash storage tank, the second filter plate is provided to facilitate the filtering of dust in the outflowing air to avoid pollution to the outside atmosphere, and the cover plate is provided to facilitate the blocking of the second ventilation pipe when not unloading to prevent rainwater from flowing into the coal ash storage tank on rainy days.

[0011] Preferably, the upper surface of the coal ash storage is fixedly connected to a second motor, and the output end of the second motor is fixedly connected to a second rotating shaft. The cleaning rod is provided to facilitate the scraping of dust accumulated on the lower surface of the second filter plate during its rotation.

[0012] Preferably, the cylindrical surface of the second rotating shaft is fixedly connected to a cleaning rod, and the height of the upper surface of the cleaning rod is the same as the height of the lower surface of the second filter plate.

[0013] Preferably, a first air outlet pipe is provided on the upper surface of the bulk bin, and a first filter plate is fixedly connected to the upper surface of the first air outlet pipe. The first filter plate is provided to facilitate filtering of dust in the air flowing out of the bulk bin.

[0014] Preferably, a vibration assembly is provided on the upper surface of the bulk bin, and the vibration assembly includes a vertical plate, a limit plate, a first motor, a first rotating shaft, an eccentric wheel, a contact ball, a spring, a protruding ring and a sliding shaft. The vertical plate is fixedly connected to the upper surface of the bulk bin, the limit plate is fixedly connected to the side surface of the vertical plate, and a vertical through circular hole is provided on the upper surface of the limit plate.

[0015] Preferably, the first motor is fixedly connected to the side surface of the vertical plate, the first rotating shaft is fixedly connected to the output end of the first motor, and the eccentric wheel is fixedly connected to the cylindrical surface of the first rotating shaft.

[0016] Preferably, the contact ball is fixedly connected to the top of the sliding shaft, the sliding shaft is slidably connected in the through-hole of the limit plate, the protruding ring is fixedly connected to the cylindrical surface of the sliding shaft, the spring is fixedly connected between the protruding ring and the limit plate, the sliding shaft is above the first filter plate, and the top of the contact ball contacts the bottom surface of the eccentric wheel. The spring is provided to facilitate pressing the sliding shaft against the eccentric wheel, so that the sliding shaft can move up and down back and forth when the eccentric wheel rotates, thereby striking the first filter plate below back and forth, causing the first filter plate to vibrate, so that the dust accumulated on the first filter plate falls off.

[0017] Working principle: After the Roots blower is turned on, air enters the transition bin through the air pipe, and the air fluidizes the fly ash through the gasification plate to increase the fluidity of the fly ash. According to the slope in the bin, the material flows from the high end to the low end to the centralized discharge port, and the discharge amount is controlled by the butterfly valve. It is transported to the first elevator through the first outflow pipe and the second outflow pipe, and then lifted to the bulk bin through the second elevator, and then loaded and shipped.

[0018] (III) Beneficial effects

[0019] The present invention provides a rectangular fly ash storage tank which is convenient for unloading. It has the following beneficial effects:

[0020] 1. By setting up an aeration box assembly to fluidize the fly ash so that it can flow out from the discharge port, the fly ash unloading rate in the rectangular fly ash silo can be guaranteed to reach more than 95%, thereby improving the unloading conditions.

[0021] 2. The use of the first filter plate and the second filter plate can reduce the outflow of dust, thereby protecting the atmospheric environment.

[0022] 3. By setting up a vibration component and a cleaning rod, it is possible to prevent the accumulated dust from blocking the first filter plate and the second filter plate, thereby ensuring ventilation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a rectangular fly ash storage tank that is easy to unload proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a vibration mechanism of a rectangular fly ash storage tank that is convenient for unloading proposed by the present invention;

[0025] Figure 3 A schematic diagram of the internal structure of a rectangular fly ash storage tank for easy unloading proposed by the present invention;

[0026] Figure 4 A schematic diagram of the internal structure of an aeration box assembly of a rectangular fly ash storage tank that is convenient for unloading proposed by the present invention;

[0027] Figure 5 This is an enlarged view of the local structure at A of a rectangular fly ash storage tank that is easy to unload proposed by the present invention;

[0028] Figure 6 This is a schematic cross-sectional structural diagram of the installation position of the second filter plate of a rectangular fly ash storage tank that is convenient for unloading proposed by the present invention.

[0029] Among them, 1. ground; 101. discharge trough; 2. coal ash storage; 3. first hoist; 4. first feed pipe; 5. second hoist; 6. second feed pipe; 7. inflation box assembly; 701. protective shell; 702. transition bin; 703. gasification plate; 704. Roots blower; 8. bulk bin; 9. vibration assembly; 901. vertical plate; 902. limit plate; 903. first motor; 904. first rotating shaft; 905. eccentric wheel; 906. contact ball; 907. spring; 908. protruding ring; 909. sliding shaft; 10. first air outlet pipe; 11. bracket; 12. second ventilation pipe; 13. first filter plate; 14. first outflow pipe; 15. butterfly valve; 16. second outflow pipe; 17. cover plate; 18. second motor; 19. second filter plate; 20. second rotating shaft; 21. cleaning rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example:

[0032] like Figure 1-6 As shown, the embodiment of the present invention provides a rectangular fly ash storage tank for easy unloading, including a ground 1, a coal ash storage tank 2 is arranged inside the ground 1, a discharge trough 101 is arranged on the ground 1 away from the coal ash storage tank 2, an aeration box assembly 7 is arranged inside the coal ash storage tank 2, the aeration box assembly 7 includes a protective shell 701, a transition bin 702, a gasification plate 703 and a Roots blower 704, a first hoist 3 is arranged inside the discharge trough 101, a first outflow pipe 14 is arranged at the discharge port of the coal ash storage tank 2, the first outflow pipe 14 is fixedly connected to a butterfly valve 15 away from the coal ash storage tank 2, and the butterfly valve 15 is fixed away from the first outflow pipe 14. The second outflow pipe 16 is fixedly connected, the second outflow pipe 16 leads to the feed port of the first elevator 3, the first delivery pipe 4 is arranged at the discharge port of the first elevator 3, the second elevator 5 is fixedly connected to the upper surface of the ground 1, the first delivery pipe 4 leads to the feed port of the second elevator 5, the second delivery pipe 6 is arranged at the discharge port of the second elevator 5, a bracket 11 is arranged on the upper surface of the ground 1 away from the second elevator 5, the top of the bracket 11 is fixedly connected to the bulk bin 8, the second delivery pipe 6 leads to the bulk bin 8, the upper surface of the bulk bin 8 is provided with a first air outlet pipe 10, and the upper surface of the first air outlet pipe 10 is fixedly connected to the first filter plate 13. The bottom of the coal ash storage 2 is inclined, the butterfly valve 15 and the Roots blower 704 are controlled by the control system to perform their work, the number of the aeration box assembly 7 is multiple, arranged at an inclination angle of more than 5° and the situation, and the installation spacing is 0.5-1.5m.

[0033] A vibration assembly 9 is arranged on the upper surface of the bulk bin 8, and the vibration assembly 9 includes a vertical plate 901, a limit plate 902, a first motor 903, a first rotating shaft 904, an eccentric wheel 905, a contact ball 906, a spring 907, a protruding ring 908 and a sliding shaft 909. The vertical plate 901 is fixedly connected to the upper surface of the bulk bin 8, the limit plate 902 is fixedly connected to the side surface of the vertical plate 901, and a vertical through circular hole is arranged on the upper surface of the limit plate 902.

[0034] The first motor 903 is fixedly connected to the side surface of the vertical plate 901, the first rotating shaft 904 is fixedly connected to the output end of the first motor 903, the eccentric wheel 905 is fixedly connected to the cylindrical surface of the first rotating shaft 904, the contact ball 906 is fixedly connected to the top of the sliding shaft 909, the sliding shaft 909 is slidably connected in the through circular hole of the limit plate 902, the protruding ring 908 is fixedly connected to the cylindrical surface of the sliding shaft 909, the spring 907 is fixedly connected between the protruding ring 908 and the limit plate 902, the sliding shaft 909 is above the first filter plate 13, the top of the contact ball 906 is in contact with the bottom surface of the eccentric wheel 905, and the spring 907 is always in a compressed state.

[0035] A second ventilation pipe 12 is arranged on the top of the coal ash storage 2, a second filter plate 19 is fixedly connected to the bottom of the second ventilation pipe 12, and a cover plate 17 is arranged on the top of the second ventilation pipe 12. When unloading, the cover plate 17 is removed, and the cover plate 17 needs to be reinstalled after unloading.

[0036] The upper surface of the interior of the coal ash storage tank 2 is fixedly connected to the second motor 18, the output end of the second motor 18 is fixedly connected to the second rotating shaft 20, the cylindrical surface of the second rotating shaft 20 is fixedly connected to the cleaning rod 21, and the height of the upper surface of the cleaning rod 21 is the same as the height of the lower surface of the second filter plate 19.

[0037] The protective shell 701 is fixedly connected to the inside of the coal ash storage tank 2, the transition bin 702 and the protective shell 701 are fixedly connected, the gasification plate 703 is fixedly connected to the upper surface of the transition bin 702, the Roots blower 704 is fixedly connected to the lower surface inside the protective shell 701, the air pipe connected to the output end of the Roots blower 704 passes into the transition bin 702, and the air pipe connected to the input end of the Roots blower 704 is connected to the external air.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rectangular fly ash storage tank for easy unloading, comprising a ground surface (1), characterized in that: A coal ash reservoir (2) is arranged inside the ground (1), a discharge trough (101) is arranged on the ground (1) away from the coal ash reservoir (2), an air filling box assembly (7) is arranged inside the coal ash reservoir (2), the air filling box assembly (7) comprises a protective shell (701), a transition bin (702), a gasification plate (703) and a Roots blower (704), a first elevator (3) is arranged inside the discharge trough (101), a first outflow pipe (14) is arranged at the discharge port of the coal ash reservoir (2), the first outflow pipe (14) is fixedly connected to a butterfly valve (15) away from the coal ash reservoir (2), and the butterfly valve (15) is away from the first outflow pipe (14). The outlet pipe (14) is fixedly connected to a second outlet pipe (16), the second outlet pipe (16) leads to the feed inlet of the first elevator (3), the discharge port of the first elevator (3) is provided with a first conveying pipe (4), the upper surface of the ground (1) is fixedly connected to the second elevator (5), the first conveying pipe (4) leads to the feed inlet of the second elevator (5), the discharge port of the second elevator (5) is provided with a second conveying pipe (6), the upper surface of the ground (1) is provided away from the second elevator (5) with a bracket (11), the top end of the bracket (11) is fixedly connected to the bulk bin (8), and the second conveying pipe (6) leads to the bulk bin (8).

2. A rectangular fly ash storage tank for easy unloading according to claim 1, characterized in that: The protective shell (701) is fixedly connected to the inside of the coal ash storage (2), the transition bin (702) and the protective shell (701) are fixedly connected, and the gasification plate (703) is fixedly connected to the upper surface of the transition bin (702).

3. A rectangular fly ash storage tank for easy unloading according to claim 1, characterized in that: The Roots blower (704) is fixedly connected to the lower surface of the inner part of the protective shell (701); the air pipe connected to the output end of the Roots blower (704) leads into the transition chamber (702); and the air pipe connected to the input end of the Roots blower (704) is in communication with the external air.

4. A rectangular fly ash storage tank for easy unloading according to claim 1, characterized in that: A second ventilation pipe (12) is arranged on the top of the coal ash storage tank (2); a second filter plate (19) is fixedly connected to the bottom of the second ventilation pipe (12); and a cover plate (17) is arranged on the top of the second ventilation pipe (12).

5. The rectangular fly ash storage tank for easy unloading according to claim 1 is characterized by: The inner upper surface of the coal ash storage tank (2) is fixedly connected to a second motor (18), and the output end of the second motor (18) is fixedly connected to a second rotating shaft (20).

6. A rectangular fly ash storage tank for easy unloading according to claim 5, characterized in that: The cylindrical surface of the second rotating shaft (20) is fixedly connected to a cleaning rod (21), and the height of the upper surface of the cleaning rod (21) is the same as the height of the lower surface of the second filter plate (19).

7. The rectangular fly ash storage tank for easy unloading according to claim 1 is characterized by: The upper surface of the bulk bin (8) is provided with a first air outlet pipe (10), and the upper surface of the first air outlet pipe (10) is fixedly connected to a first filter plate (13).

8. The rectangular fly ash storage tank for easy unloading according to claim 1 is characterized by: A vibration assembly (9) is arranged on the upper surface of the bulk bin (8), and the vibration assembly (9) comprises a vertical plate (901), a limiting plate (902), a first motor (903), a first rotating shaft (904), an eccentric wheel (905), a contact ball (906), a spring (907), a protruding ring (908) and a sliding shaft (909). The vertical plate (901) is fixedly connected to the upper surface of the bulk bin (8), the limiting plate (902) is fixedly connected to the side surface of the vertical plate (901), and a vertically penetrating circular hole is arranged on the upper surface of the limiting plate (902).

9. A rectangular fly ash storage tank for easy unloading according to claim 8, characterized in that: The first motor (903) is fixedly connected to the side surface of the vertical plate (901), the first rotating shaft (904) is fixedly connected to the output end of the first motor (903), and the eccentric wheel (905) is fixedly connected to the cylindrical surface of the first rotating shaft (904).

10. The rectangular fly ash storage tank for easy unloading according to claim 8, characterized in that: The contact ball (906) is fixedly connected to the top of the sliding shaft (909), the sliding shaft (909) is slidably connected in the through circular hole of the limit plate (902), the protruding ring (908) is fixedly connected to the cylindrical surface of the sliding shaft (909), the spring (907) is fixedly connected between the protruding ring (908) and the limit plate (902), the sliding shaft (909) is above the first filter plate (13), and the top of the contact ball (906) is in contact with the bottom surface of the eccentric wheel (905).

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