Anti-blocking scraping rake device for powder at bottom of roasting furnace

Abstract

The utility model provides a roasting furnace bottom powder anti-blocking scraping and raking device which comprises a scraping and raking shaft, a telescopic rotating transmission mechanism and a scraping and raking sleeve fixed on a roasting furnace lower cone bottom, one end of the scraping and raking sleeve extends into the roasting furnace lower cone bottom, and the other end of the scraping and raking sleeve is located outside the roasting furnace lower cone bottom. Scraping rake blades are arranged at one end of the scraping rake shaft, the end, provided with the scraping rake blades, of the scraping rake shaft extends into the scraping rake sleeve, the other end, located outside the scraping rake sleeve, of the scraping rake shaft is connected with the telescopic rotating transmission mechanism, and a one-way cover plate used for sealing the scraping rake sleeve is arranged at the end, extending into the lower cone bottom of the roasting furnace, of the scraping rake sleeve. And the one-way cover plate is hinged with the scraping rake sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of spray roasting, in particular to a roasting furnace bottom powder material anti-clogging scraper device. Background Art

[0002] In the production process of the spray roasting waste acid regeneration unit, the oxide powder produced in the roasting furnace is generally discharged into the powder gas conveying system through the rotary valve at the bottom of the furnace. However, in actual production, the oxide powder will agglomerate due to the high viscosity of the oxide powder. These agglomerations cause the powder at the bottom of the roasting furnace to bridge and accumulate, blocking the normal fall of the upper oxide powder, causing system failure and affecting the safe operation of the equipment.

[0003] In the case of blockage at the bottom of the general powder silo, air cannons and other powder loosening devices are usually used to destroy the powder bridge. However, when the acid regeneration unit is in normal production, the negative pressure in the roasting furnace needs to be stably controlled. If there is an instantaneous and drastic pressure fluctuation, it will cause the system operation stability to be destroyed and even cause the system to stop suddenly. Therefore, the technical method of using air cannons to destroy powder bridges is not feasible.

[0004] Moreover, the bottom of the roasting furnace is a high-temperature acidic environment. If metal materials stay in this environment for a long time, it will cause serious corrosion. Therefore, it is necessary to design a mechanical powder anti-clogging scraper device that will not affect the normal production of the unit and has a sufficiently long service life to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects of the prior art and provide a scraper device for preventing powder material from clogging at the bottom of a roasting furnace. The utility model at least solves some of the problems in the prior art.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a scraper device for preventing powder materials from being blocked at the bottom of a roasting furnace, comprising a scraper shaft, a telescopic rotating transmission mechanism, and a scraper sleeve fixed on the lower cone bottom of the roasting furnace, one end of the scraper sleeve extending into the lower cone bottom of the roasting furnace, and the other end of the scraper sleeve being located outside the lower cone bottom of the roasting furnace, one end of the scraper shaft is provided with a scraper blade, and the end of the scraper shaft provided with the scraper blade extends into the scraper sleeve, and the other end of the scraper shaft located outside the scraper sleeve is connected to the telescopic rotating transmission mechanism, and the end of the scraper sleeve extending into the lower cone bottom of the roasting furnace is provided with a one-way cover plate for closing the scraper sleeve, and the one-way cover plate is hinged to the scraper sleeve.

[0008] Furthermore, the scraper sleeve is arranged at an angle, and one end of the scraper sleeve located inside the lower cone bottom of the roasting furnace is higher than the other end of the scraper sleeve located outside the lower cone bottom of the roasting furnace.

[0009] Furthermore, the scraper shaft and the scraper sleeve are coaxially arranged.

[0010] Furthermore, a compressed air interface is provided on the side wall of the scraper sleeve located outside the lower cone bottom of the roasting furnace.

[0011] Furthermore, there are a plurality of scraper blades, and the scraper blades are evenly spaced along the circumference of the scraper shaft.

[0012] Furthermore, the scraper blade adopts a high-temperature resistant prestressed bent spring sheet, one end of the scraper blade is connected to the scraper shaft, the other end of the scraper blade can abut the inner wall of the scraper sleeve, and the middle part of each scraper blade is close to the axis of the scraper shaft.

[0013] Furthermore, the telescopic rotation transmission mechanism includes a driving cylinder that drives the scraper shaft to move axially along the scraper sleeve, and a driving motor that can drive the scraper shaft to rotate. The scraper shaft is connected to the output shaft of the driving motor, and the driving motor is fixed on the driving cylinder.

[0014] Furthermore, along the radial direction of the scraper and rake sleeve, the cross-sectional area of ​​the one-way cover plate is larger than the cross-sectional area of ​​the scraper and rake sleeve.

[0015] Furthermore, the one-way cover plate is hinged to the scraper sleeve via a one-way cover plate shaft, and the one-way cover plate shaft is arranged on the outer side wall of the scraper sleeve.

[0016] Furthermore, the surface of the scraper blade is sprayed with a non-magnetic lining material.

[0017] The utility model has the following beneficial effects:

[0018] 1. The powder material anti-clogging scraper device provided by the utility model destroys the powder material bridge in a mechanical way, while ensuring the smooth operation of the system in the roasting furnace.

[0019] 2. In the event of powder blockage at the bottom of the roasting furnace, the scraper blades are sent out of the scraper sleeve, and the scraper blades extend to the powder accumulation area at the bottom of the lower cone of the roasting furnace, destroying the powder bridge; during the normal production process of the roasting furnace, the scraper blades are located in the scraper sleeve, and the scraper sleeve protects the scraper blades, preventing the scraper blades from staying in the high temperature and acidic environment of the bottom of the roasting furnace for a long time and causing serious corrosion, thereby ensuring the service life of the scraper blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model 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, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of a scraper blade of a roasting furnace bottom powder material anti-clogging scraper device provided by an embodiment of the utility model when the scraper blade is not extended;

[0022] Figure 2 The embodiment of the utility model provides Figure 1 The enlarged view of the lower right part;

[0023] Figure 3 The embodiment of the utility model provides Figure 2 The upper left part is an enlarged view;

[0024] Figure 4 A schematic diagram of the scraper blades of the powder material anti-clogging scraper device for the roasting furnace bottom provided by the embodiment of the utility model when extended;

[0025] Figure 5 The embodiment of the utility model provides Figure 4 A partial enlargement of the lower right corner

[0026] Figure 6 The embodiment of the utility model provides Figure 5 Magnified image on the upper left.

[0027] In the figure: the lower cone bottom 1 of the roasting furnace, the one-way cover plate 2, the one-way cover plate shaft 3, the scraper blade 4, the scraper sleeve 5, the scraper shaft 6, the telescopic rotating transmission mechanism 7, the compressed air interface 8, and the powder accumulation area 9. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "several" means two or more.

[0030] like Figure 1-Figure 6 The embodiment of the utility model provides a scraper device for preventing powder from being blocked at the bottom of a roasting furnace, comprising a scraper shaft 6, a telescopic rotating transmission mechanism 7, and a scraper sleeve 5 fixed on the lower cone bottom 1 of the roasting furnace, one end of the scraper sleeve 5 extends into the lower cone bottom 1 of the roasting furnace, and the other end of the scraper sleeve 5 is located outside the lower cone bottom 1 of the roasting furnace, one end of the scraper shaft 6 is provided with a scraper blade 4, and one end of the scraper shaft 6 provided with the scraper blade 4 extends into the scraper sleeve 5, and the other end of the scraper shaft 6 located outside the scraper sleeve 5 is connected to the telescopic rotating transmission mechanism 7, and the end of the scraper sleeve 5 extending into the lower cone bottom 1 of the roasting furnace is provided with a one-way cover plate 2 for closing the scraper sleeve 5, and the one-way cover plate 2 is hinged to the scraper sleeve 5, and the hinge axis is perpendicular to the scraper shaft.

[0031] In this embodiment, the scraper sleeve 5 is tilted, and the end of the scraper sleeve 5 located inside the lower cone bottom 1 of the roasting furnace is higher than the end of the scraper sleeve 5 located outside the lower cone bottom 1 of the roasting furnace. The scraper shaft 6 is coaxially arranged with the scraper sleeve 5.

[0032] In this embodiment, the scraper sleeve 5 is provided with a compressed air interface 8 on the side wall outside the lower cone bottom 1 of the roasting furnace, and compressed air is passed into the scraper sleeve 5 through the compressed air interface 8. When the one-way cover plate 2 is opened, it can be ensured that oxide powder does not enter the scraper sleeve 5. In this embodiment, 0.2-0.4MPa of compressed air is passed through the scraper sleeve 5 to ensure a slight positive pressure to ensure that oxide powder does not enter the scraper sleeve 5.

[0033] In this embodiment, there are several scraper blades 4, and each scraper blade 4 is evenly spaced along the circumference of the scraper shaft 6. In this embodiment, the scraper blade 4 adopts a high temperature resistant prestressed bending spring sheet, one end of the scraper blade 4 is connected to the scraper shaft 6, and the other end of the scraper blade 4 can abut the inner wall of the scraper sleeve 5, and the middle part of each scraper blade 4 is close to the axis of the scraper shaft 6, that is, the other end of the scraper blade 4 extends along the radial direction of the scraper shaft. In this embodiment, the telescopic rotation transmission mechanism 7 includes a driving cylinder that drives the scraper shaft 6 to move axially along the scraper sleeve 5, and a driving motor that can drive the scraper shaft 6 to rotate. The scraper shaft 6 is connected to the output shaft of the driving motor, and the driving motor is fixed on the driving cylinder. The telescopic rotation transmission mechanism 7 can also be replaced by manual labor to manually control the telescopic and rotation of the scraper shaft 6. In the utility model, the telescopic rotation transmission mechanism 7 can be driven by manpower or electricity / gas in combination with actual conditions.

[0034] When the bottom of the roasting furnace is clogged with powder, the telescopic rotating transmission mechanism 7 pushes the scraper blade 4 to push open the one-way cover plate 2 and extend to the powder accumulation area 9 of the lower cone bottom 1 of the roasting furnace. After the scraper blade 4 extends out of the scraper sleeve 5, it is no longer constrained by the inner wall of the scraper sleeve 5 and naturally spreads out. Figure 6 , each scraper blade 4 is spread out in a hook shape, and the telescopic rotary transmission mechanism 7 drives the scraper blade 4 to extend and rotate through the scraper shaft 6 to destroy the powder bridge at the bottom of the roasting furnace; when the lower cone bottom 1 of the roasting furnace is unblocked, the telescopic rotary transmission mechanism 7 drives the scraper blade 4 to retract into the scraper sleeve 5. When the scraper blade 4 is retracted, the one-way cover plate 2 is on the retraction path of at least one scraper blade 4, and the scraper blade 4 gives the one-way cover plate 2 a force toward the scraper sleeve 5, thereby driving the one-way cover plate 2 to close; in other embodiments, a spring can also be set to allow the one-way cover plate 2 to close automatically, for example, one end of the spring is connected to the one-way cover plate 2, and the other end of the spring is connected to the scraper sleeve 5. The structural form of the scraper blade 4 can be various, not limited to that shown in the figure, as long as it can play the role of breaking up the powder bridge. The utility model is provided with a one-way cover plate 2, which can ensure that the oxide powder will not enter the scraper sleeve 5 during the normal production process of the roasting furnace.

[0035] In this embodiment, along the radial direction of the scraper sleeve 5, the cross-sectional area of ​​the one-way cover plate 2 is larger than the cross-sectional area of ​​the scraper sleeve 5. The one-way cover plate 2 is hinged to the scraper sleeve 5 through a one-way cover plate shaft 3, and the one-way cover plate shaft 3 is arranged on the outer side wall of the scraper sleeve 5. In this embodiment, the one-way cover plate 2 can only be opened outward relative to the scraper sleeve 5, and the one-way cover plate 2 cannot be rotated into the scraper sleeve 5.

[0036] In this embodiment, a special non-magnetic lining material is sprayed on the surface of the scraper blade 4 to prevent magnetic foreign matter from adhering to the scraper blade 4 and being brought into the roasting furnace.

[0037] The powder material anti-clogging scraper device provided by the utility model can, on the one hand, ensure that the blockage is broken mechanically when the bottom of the roasting furnace is blocked, and on the other hand, it can be pulled out and hidden when there is no blockage without affecting normal production and feeding, thereby ensuring the service life of the scraper device.

[0038] In the present invention, the scraper blade 4 is connected to the top of the scraper shaft 6 and is installed in the scraper sleeve 5. It is driven by the telescopic rotation transmission mechanism 7 to extend from the scraper sleeve 5 and then spread out.

[0039] The scraper blade 4 can be pushed out of the scraper sleeve 5 by the telescopic rotary transmission mechanism 7 through the scraper shaft 6, and driven to rotate under the action of the telescopic rotary transmission mechanism 7. After the scraping and raking is completed, the pushed out scraper blade 4 can be retracted into the scraper sleeve 5 by the telescopic rotary transmission mechanism 7 through the scraper shaft 6. The one-way cover plate 2 is opened when the scraper blade 4 is pushed out from the scraper sleeve 5, and the one-way cover plate 2 is closed when the scraper blade 4 is retracted into the scraper sleeve 5. The scraper blade 4 is made of prestressed high temperature resistant (400-600℃) material.

[0040] The mechanical powder anti-clogging scraper device provided by the utility model can also be applied to the acid spray roasting process of new energy battery ternary precursors, hydrometallurgy, nonferrous metals and other industries.

[0041] The powder material anti-clogging scraper device provided by the utility model destroys the powder material bridge in a mechanical manner and ensures the stable operation of the system in the roasting furnace at the same time.

[0042] In the event of powder blockage at the bottom of the roasting furnace, the scraper blade 4 is sent out of the scraper sleeve 5, and the scraper blade 4 extends to the powder accumulation area 9 of the lower cone bottom 1 of the roasting furnace, destroying the powder bridge; while in the normal production process of the roasting furnace, the scraper blade 4 is located in the scraper sleeve 5, and the scraper sleeve 5 protects the scraper blade 4, preventing the scraper blade 4 from staying in the high-temperature acidic environment of the bottom of the roasting furnace for a long time and causing serious corrosion, thereby ensuring the service life of the scraper blade 4.

[0043] In the utility model, a one-way cover plate 2 is arranged on the scraper sleeve 5 or compressed air is passed to the scraper sleeve 5 to prevent oxide powder from entering the scraper sleeve 5 .

[0044] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder material scraping and rake device for preventing clogging at the bottom of a roasting furnace, characterized in that: It includes a scraper shaft, a telescopic rotating transmission mechanism, and a scraper sleeve fixed on the lower cone bottom of the roasting furnace, one end of the scraper sleeve extends into the lower cone bottom of the roasting furnace, and the other end of the scraper sleeve is located outside the lower cone bottom of the roasting furnace. A scraper blade is provided at one end of the scraper shaft, and the end of the scraper shaft provided with the scraper blade extends into the scraper sleeve, and the other end of the scraper shaft located outside the scraper sleeve is connected to the telescopic rotating transmission mechanism, and the end of the scraper sleeve extending into the lower cone bottom of the roasting furnace is provided with a one-way cover plate for closing the scraper sleeve, and the one-way cover plate is hinged to the scraper sleeve.

2. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 1, characterized in that: The scraper sleeve is tilted, and one end of the scraper sleeve located inside the lower cone bottom of the roasting furnace is higher than the other end of the scraper sleeve located outside the lower cone bottom of the roasting furnace.

3. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 1, characterized in that: The scraper and rake shaft is coaxially arranged with the scraper and rake sleeve.

4. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 1, characterized in that: The scraper sleeve is provided with a compressed air interface on the side wall outside the lower cone bottom of the roasting furnace.

5. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 1, characterized in that: There are a plurality of scraper blades, and the scraper blades are evenly spaced along the circumference of the scraper shaft.

6. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 5, characterized in that: The scraper blades are made of high temperature resistant prestressed bent springs, one end of the scraper blades is connected to the scraper shaft, the other end of the scraper blades can abut against the inner wall of the scraper sleeve, and the middle of each scraper blade is close to the axis of the scraper shaft.

7. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 1, characterized in that: The telescopic rotary transmission mechanism comprises a driving cylinder for driving the scraper shaft to move axially along the scraper sleeve, and a driving motor for driving the scraper shaft to rotate. The scraper shaft is connected to the output shaft of the driving motor, and the driving motor is fixed on the driving cylinder.

8. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 1, characterized in that: Along the radial direction of the scraper and rake sleeve, the cross-sectional area of ​​the one-way cover plate is larger than the cross-sectional area of ​​the scraper and rake sleeve.

9. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 1, characterized in that: The one-way cover plate is hinged to the scraper and rake sleeve via a one-way cover plate shaft, and the one-way cover plate shaft is arranged on the outer side wall of the scraper and rake sleeve.

10. The anti-clogging scraper device for powder at the bottom of a roasting furnace according to claim 1, characterized in that: The surface of the scraper blade is sprayed with non-magnetic lining material.

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