A device for removing ash from an ash hopper and a method of treating the same

Abstract

The application discloses a device for removing accumulated dust in a dust hopper and a use method thereof, which comprises a dust discharging pipeline, one end of the dust discharging pipeline being communicated with a dust discharging hole located on the side of the dust hopper; an ellipsoidal cavity, one end of the ellipsoidal cavity being communicated with the other end of the dust discharging pipeline; two communicating pipes, the two communicating pipes being located on the same circumferential surface of the inner wall of the ellipsoidal cavity; a circular table type base, the outer circumferential surface of the circular table type base being fixed between the two communicating pipes; an upper valve, the upper valve being arranged on the upper surface of the circular table type base; a lower valve, the lower valve being arranged on the lower surface of the circular table type base; an upper air bag, the upper air bag being fixed with the edge of the upper surface of the circular table type base; a lower air bag, the lower air bag being fixed with the edge of the lower surface of the circular table type base; and a dust collecting cavity, one end of the dust collecting cavity being open and being detachably connected with the other end of the ellipsoidal cavity. The application has the beneficial effect that the ellipsoidal cavity and the upper and lower air bags are matched to realize the shunting and speed reduction of the accumulated dust.

Description

Technical Field

[0001] This invention relates to the field of dust collection technology, and in particular to a device for removing ash from an ash hopper and its method of use. Background Technology

[0002] In pyrite-based acid production systems, the flue gas generated after roasting typically carries a significant amount of dust. Electrostatic precipitators and other dust collection equipment are required to collect this dust. The collected dust settles in the lower ash hopper under gravity and is then discharged through a star-shaped ash discharge valve at the bottom of the hopper. During the ash discharge process, if the accumulated ash contains clumps or foreign objects such as detached parts from the electric field, the inlet of the star-shaped ash discharge valve can easily become blocked, preventing normal ash discharge and causing ash to accumulate in the ash hopper. To address the blockage at the bottom of the star-shaped ash discharge valve, it is usually necessary to first drain all the accumulated ash from the ash hopper through the discharge hole, then clean out the foreign objects before resuming normal production. However, during the ash discharge process, a large amount of dust falls onto the platform or ground, causing severe localized dust pollution. This increases the difficulty of 5S management, raises on-site environmental risks and labor costs, and makes it impossible to achieve sealed ash discharge and cleaning, resulting in poor effectiveness.

[0003] Chinese utility model patent publication number CN212253713U discloses an ash hopper discharge device, comprising: an ash hopper body; a transition component, one end of which is connected to the ash hopper body and the other end to an extension pipe, the transition pipe having a first channel; a connecting shaft disposed on the inner wall of the transition pipe and rotatably connected to the transition pipe; a sealing plate disposed inside the transition pipe, one end of which is rotatably connected to the connecting shaft and the other end extending towards the inner wall of the transition pipe to seal the first channel; a counterweight component fixedly connected to the sealing plate; and a cover component, one end of which is connected to the extension pipe and the other end having a cover body for covering the opening of the ash receiving cart. This ash discharge device is used for normal ash discharge operation; if the ash discharge valve at the bottom of the ash hopper body is blocked, the device cannot be used.

[0004] Chinese utility model patent publication number CN217737183U discloses an abnormal ash discharge device for an ash hopper, including an ash hopper and a silo pump connected to the lower end of the ash hopper. The ash hopper is connected to an ash discharge pipe via a ash discharge pipe. An air supply pipe is installed between the silo pump and the ash hopper. The air supply pipe is connected to a branch air pipe via a make-up air pipe. An ash removal pipe is connected at the junction of the ash discharge pipe and the ash discharge pipe. The ash discharge pipe and the make-up air pipe are connected via a dredging pipe. An on / off valve assembly for controlling the flow of the pipeline is installed between the make-up air pipe, the dredging pipe, the ash discharge pipe, and the ash removal pipe. Although this device has the function of abnormal ash discharge from the ash hopper, the use of an air supply pipe for ventilation will cause the accumulated ash to fly and overflow. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that existing ash hoppers do not have a dedicated collection device when ash is discharged from the ash discharge hole. To this end, an apparatus for removing ash from the ash hopper and a method for using it are provided.

[0006] The technical solution of the present invention is: a device for removing ash accumulation in an ash hopper, comprising: an ash discharge pipe, one end of which is connected to an ash discharge hole located on the side of the ash hopper; an ellipsoidal cavity, one end of which is connected to the other end of the ash discharge pipe; two connecting pipes, the two connecting pipes being located on the same circumferential surface of the inner wall of the ellipsoidal cavity, at least one end of which is connected to the outside; a frustum-shaped base, the outer circumferential surface of which is fixed between the two connecting pipes, the two connecting pipes being connected to the frustum-shaped base; an upper valve, which is opened on the upper surface of the frustum-shaped base; a lower valve, which is opened on the lower surface of the frustum-shaped base; an upper airbag, which is fixedly connected to the edge of the upper surface of the frustum-shaped base; a lower airbag, which is fixedly connected to the edge of the lower surface of the frustum-shaped base; and an ash collection chamber, one end of which is open and detachably connected to the other end of the ellipsoidal cavity.

[0007] The improvement to the above solution is that the ash collection chamber is covered with a biodegradable covering.

[0008] The covering material described in the above scheme is paper or plastic film.

[0009] In the above scheme, one end of the ash collection cavity is threadedly connected to the other end of the ellipsoidal cavity.

[0010] In the above scheme, the end of the ash collection cavity away from the ellipsoidal cavity is bent downwards.

[0011] In the above scheme, the ash discharge pipe is connected to the ash discharge hole on the side of the ash hopper through a valve.

[0012] A method for using a device for removing ash from an ash hopper includes the following steps: opening the ash discharge hole on the side of the ash hopper, allowing the ash inside the ash hopper to be sent to the ellipsoidal cavity through the ash discharge pipe under negative pressure, inflating the frustum-shaped base through a connecting pipe, opening the upper valve, expanding the upper air bladder, diverting the ash from the gap between the frustum-shaped base and the ellipsoidal cavity into the ash collection chamber, and when the ash collection chamber has collected a certain amount of ash, further expanding the upper air bladder to block the ash from falling, opening the lower valve, expanding the lower air bladder, driving the ash in the ellipsoidal cavity into the ash collection chamber, removing the ash collection chamber to complete one ash collection operation, and repeating this process until the ash in the ash hopper is completely removed.

[0013] The beneficial effect of this invention is that by cooperating with the ellipsoidal cavity and the upper and lower airbags, the accumulated ash is diverted and slowed down, while the accumulated ash is pushed into the ash collection chamber. The biodegradable covering can capture the falling dust and prevent it from being scattered, and then it can be safely disposed of, minimizing ash emission. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the device for removing ash from an ash hopper according to the present invention;

[0015] Figure 2 yes Figure 1 Schematic diagram of the connection between the truncated circular base and the upper and lower airbags;

[0016] Figure 3 yes Figure 1 Schematic diagram of the central ash collection cavity;

[0017] Figure 4 This is a schematic diagram of a preferred embodiment of the present invention for removing ash from an ash hopper;

[0018] In the diagram, 1 is the ash discharge pipe, 2 is the ellipsoidal cavity, 3 is the connecting pipe, 4 is the frustum-shaped base, 5 is the upper valve, 6 is the upper airbag, 7 is the lower airbag, and 8 is the ash collection chamber. Detailed Implementation

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments implemented by those skilled in the art without creative effort are within the protection scope of the present invention.

[0020] like Figure 1-4As shown, a device for removing ash accumulation in an ash hopper includes: an ash discharge pipe 1, one end of which is connected to an ash discharge hole located on the side of the ash hopper (the ash discharge hole is typically located on the lower side of the ash hopper), and the ash discharge pipe can be connected to the ash discharge hole via a valve; an ellipsoidal cavity 2, which refers to a hollow cavity with an ellipsoidal outer surface, one end of which is connected to the other end of the ash discharge pipe; and two connecting pipes 3, located on the same circumferential surface of the inner wall of the ellipsoidal cavity, with opposite ends pointing towards the center of the ellipsoidal cavity, one end of which is connected to the outside, and the other end of which is not connected to the outside. The connecting pipes serve to fix and support the frustum-shaped base. On the one hand, it serves as a gas passage; on the other hand, it has a frustum-shaped base 4, the outer circumference of which is fixed between two connecting pipes, which are connected to the frustum-shaped base; the frustum-shaped base is hollow inside; an upper valve 5 is located on the upper surface of the frustum-shaped base; a lower valve is located on the lower surface of the frustum-shaped base; an upper airbag 6 is fixed to the edge of the upper surface of the frustum-shaped base; a lower airbag 7 is fixed to the edge of the lower surface of the frustum-shaped base; the expansion or contraction of the upper and lower airbags is controlled by opening and closing the upper and lower valves; a ash collection chamber 8 is open at one end and detachably connected to the other end of an ellipsoidal cavity, specifically, one end of the ash collection chamber is threadedly connected to the other end of the ellipsoidal cavity. The upper and lower valves are solenoid valves, which can be controlled by electromagnetic signals.

[0021] As a variation of the above embodiment, the other end of each connecting pipe is connected to the outside. One connecting pipe can be connected to an external air source, while the other connecting pipe is sealed with a cap.

[0022] Because the ash collection chamber is inclined, with its axis coinciding with the ash discharge hole, to prevent some ash from leaking out when the ash collection chamber is removed, the end of the ash collection chamber furthest from the ellipsoidal cavity is bent downwards, such as... Figure 2 As shown.

[0023] To minimize dust dispersion, one embodiment of the invention involves covering the dust collection chamber with a biodegradable material, such as biodegradable paper or plastic film. These covers trap falling dust and prevent its dispersion, allowing for safe disposal. The biodegradable covers adsorb falling dust particles onto their surface through effects such as electrostatic adsorption and surface tension. The surfaces of these covers possess fine textures and electrical charge properties, enabling them to effectively trap and retain dust particles. When dust falls onto the covers, it adheres to the surface, preventing it from being re-raised or dispersed into the air during cleaning. This trapping effect helps reduce dust problems and also makes the dust easier to handle and clean.

[0024] A method of using a device for removing ash accumulation in an ash hopper includes the following steps: When the inlet of the star-shaped ash discharge valve is blocked, preventing the ash from being discharged normally, the ash discharge hole on the side of the ash hopper is opened. Under negative pressure, the ash in the ash hopper is sent through the ash discharge pipe to the ellipsoidal cavity. An air source is introduced into the frustum-shaped base from a connecting pipe. The upper valve is opened, and the upper air bladder expands, reducing the space between the upper air bladder and the ellipsoidal cavity. This space can be referred to as the upper space. Similarly, the lower air bladder and the ellipsoidal cavity are connected... The space between them is called the lower space. The ash is diverted from the upper space and falls into the ash collection chamber through the lower space. This process allows the ash to be slowly released into the ash collection chamber, reducing dust. When the ash collection chamber has collected a certain amount of ash, the upper air bladder expands further to seal the upper space, the lower valve opens, the lower air bladder expands, and the ash in the lower space is driven into the ash collection chamber. Finally, the ash collection chamber is removed, thus completing one ash collection operation. When the amount of ash in the ash hopper is large, this process is repeated until the ash in the ash hopper is cleared.

[0025] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention and is not intended to limit the invention. Any person skilled in the art can make possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, using the disclosed methods and techniques, without departing from the essential creation and technical solution of the present invention. Therefore, any simple modifications, equivalent substitutions, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the scope of protection of the present invention.

Claims

1. A device for removing ash accumulated in an ash hopper, characterized in that, include: Ash discharge pipe (1), one end of which is connected to an ash discharge hole located on the side of the ash hopper; ellipsoidal cavity (2), one end of which is connected to the other end of the ash discharge pipe; connecting pipe (3), there are two connecting pipes, the two connecting pipes are located on the same circumferential surface of the inner wall of the ellipsoidal cavity, and one end of at least one connecting pipe is connected to the outside; frustum-shaped base (4), the outer circumferential surface of the frustum-shaped base is fixed between the two connecting pipes, and the two connecting pipes are connected to the frustum-shaped base; upper valve (5), the upper valve is opened on the upper surface of the frustum-shaped base; lower valve, the lower valve is opened on the lower surface of the frustum-shaped base; upper airbag (6), the upper airbag is fixed to the edge of the upper surface of the frustum-shaped base; lower airbag (7), the lower airbag is fixed to the edge of the lower surface of the frustum-shaped base; ash collection chamber (8), one end of which is open. It is detachably connected to the other end of the ellipsoidal cavity, and the expansion or contraction of the upper and lower air bladders is controlled by opening and closing the upper and lower valves; the ash collection chamber is covered with a biodegradable covering material; the method of using the device for removing ash from the ash hopper includes the following steps: opening the ash discharge hole on the side of the ash hopper, the ash in the ash hopper is sent to the ellipsoidal cavity through the ash discharge pipe under negative pressure, and air is injected into the frustum-shaped base from a connecting pipe. The upper valve is opened, the upper air bladder expands, and the ash is diverted from the gap between the frustum-shaped base and the ellipsoidal cavity and falls into the ash collection chamber. When the ash collection chamber has collected a certain amount of ash, the upper air bladder expands further to block the ash from falling. The lower valve is opened, the lower air bladder expands, and the ash in the ellipsoidal cavity is driven into the ash collection chamber. The ash collection chamber is removed, thus completing one ash collection operation. This process is repeated until the ash in the ash hopper is removed.

2. The device for removing ash from an ash hopper as described in claim 1, characterized in that, The covering material is paper or plastic film.

3. The device for removing ash from an ash hopper as described in claim 1, characterized in that, One end of the ash collection cavity is threadedly connected to the other end of the ellipsoidal cavity.

4. The device for removing ash from an ash hopper as described in claim 1, characterized in that, The end of the ash collection cavity that is away from the ellipsoidal cavity bends downward.

5. The device for removing ash from an ash hopper as described in claim 1, characterized in that, The ash discharge pipe is connected to the ash discharge hole on the side of the ash hopper via a valve.

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