Calcining furnace with sealed material basin and dust collection cover

Abstract

The utility model discloses a calcining furnace with a sealed material basin and a dust collection cover, and belongs to the technical field of calcining furnace processing equipment. The dust collecting cover is arranged above the material basin, and a gap is formed between the edge of the end part of the dust collecting cover and the inclined plane; the shielding assembly is of a metal ring structure and is provided with a first edge and a second edge which are opposite, the first edge is connected to the end edge of the dust collection cover, the second edge is tightly attached to the inclined face to enable the shielding assembly to be closed at intervals, the material basin can rotate relative to the shielding assembly, and in the rotating process, the shielding assembly is always closed at intervals. The interval between the dust collection cover and the material basin is sealed through the shielding assembly, the second edge is tightly attached to the inclined face to form tight sealing and isolation on the interval, meanwhile, rotation of the material basin is not affected, a good sealing effect is provided, smoke can be tightly sealed for a long time, smoke leakage is effectively prevented, and the service life of the material basin is prolonged. And the structure of the shielding assembly is not easy to abrade or damage at high temperature, so that the shielding assembly is high-temperature-resistant and wear-resistant and is high in universality.

Description

Technical Field

[0001] The present application belongs to the technical field of calcining furnace processing equipment, and in particular relates to a calcining furnace with a sealed material basin and a dust collecting hood. Background Art

[0002] Calcining furnace equipment is equipment used for heat treatment at high temperatures, and its interior can generate and maintain the required high temperature environment. Calcining furnace equipment is used in many industries, such as alumina lime furnace. Lime furnace is a kiln equipment used for calcining limestone. Its process is to load limestone and lump coal into the lime furnace for preheating to 850℃ and start decomposition, and complete calcination at 1200℃. After cooling, it is unloaded from the furnace to complete the production of quicklime products. The top of the lime furnace is equipped with a material basin and a feed port. During the calcination of the lime furnace, the feed port is sealed by an umbrella-shaped bell cover, but the bell cover is opened during the feeding process, and the dust inside the lime furnace will spray out. The dust particles scattered everywhere will pollute the furnace top, increase the cleaning burden of the staff, and also pollute the air.

[0003] At present, the existing technology is to set up a dust collecting device to solve the above problem, such as setting a dust collecting hood on the material basin on the top of the lime furnace. However, since the material basin rotates, the seal between the dust collecting hood and the material basin is often not tight, and most of the seals use belts. Since the material basin rotates continuously when adding materials, and sometimes due to improper operation of the lime furnace, the top temperature of the furnace becomes high, causing the sealing belt to wear out quickly or burn out due to the high temperature of the furnace top, resulting in the loss of the material basin seal and easy smoke. At present, there is no better way to solve the problem of rotating seal of the lime furnace. Utility Model Content

[0004] The present application aims to solve the technical problem of rotary sealing of a lime furnace at least to a certain extent. To this end, the present application provides a calcining furnace in which a material basin and a dust hood are sealed, which provides a better sealing effect, can tightly seal the flue gas for a long time, and effectively prevent the flue gas from leaking.

[0005] The embodiment of the present application provides a calcining furnace with a material basin and a dust collecting hood sealed, comprising:

[0006] A material basin, provided with an inclined surface for guiding the discharge of materials;

[0007] A dust collecting hood is arranged above the material basin, and a gap is provided between the end edge of the dust collecting hood and the inclined surface;

[0008] The shielding assembly is a metal ring structure having a first edge and a second edge relative to each other. The first edge is connected to the end edge of the dust hood, and the second edge is close to the inclined surface to close the interval of the shielding assembly. The material basin can be rotated relative to the shielding assembly, and during the rotation, the shielding assembly always closes the interval.

[0009] In an optional embodiment, the second edge is bent toward the middle of the basin, and the second edge is in an elastically deformed state.

[0010] In an optional embodiment, the shielding assembly includes a plurality of friction plates, and the plurality of friction plates are arranged in parallel around the dust collecting cover to form a ring structure, and adjacent friction plates are closely attached to each other.

[0011] In an optional embodiment, the side edges of the friction plates cover the side edges of the adjacent friction plates, so that the side edges of the multiple friction plates are staggered and stacked.

[0012] In an optional embodiment, the friction plate is detachably connected to the dust collecting cover.

[0013] In an optional embodiment, the shielding assembly further includes a locking member, which fixes the friction plate to the dust collecting hood.

[0014] In an optional embodiment, a furnace body is further included, wherein the furnace body is provided with an opening, and the material basin is rotatably connected to the furnace body at the opening, so that the feed can enter the furnace body from the material basin.

[0015] In an optional embodiment, a material cover is further included to seal the end of the material basin to close the opening.

[0016] In an optional embodiment, it further includes a plurality of rollers, which are connected to the side of the material basin and supported on the furnace body, so that when the material basin rotates, the rollers can roll on the furnace body.

[0017] In an optional embodiment, a driver is also included to drive the material basin to rotate.

[0018] It can be seen from the above technical solution that the beneficial effects of this application are:

[0019] The present application closes the gap between the dust hood and the material basin through a shielding component, connects the dust hood through a first edge, forms an extension part at the end edge of the dust hood, and forms a tight seal between the dust hood and the material basin through a second edge close to the inclined surface, while not affecting the rotation of the material basin, providing a better sealing effect, being able to tightly seal the flue gas for a long time, and effectively preventing the smoke from leaking out; and the shielding component structure is not easily worn off or damaged by high temperature, and is both high temperature resistant and wear-resistant, and can withstand the higher temperature of the furnace top. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other embodiments and drawings can be obtained based on these drawings without creative work.

[0021] Figure 1A schematic diagram of an embodiment of a calcining furnace in which a material basin and a dust collecting hood are sealed according to the utility model is shown;

[0022] Figure 2 A partial arrangement schematic diagram of an embodiment of the friction plate of the utility model is shown;

[0023] Figure numerals: 100, calcining furnace; 110, furnace body; 120, material basin; 121, inclined surface; 130, dust collecting hood; 140, shielding assembly; 141, friction plate; 142, locking piece; 150, material hood; 160, roller; 170, motor. DETAILED DESCRIPTION

[0024] 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.

[0025] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0029] Please refer to Figure 1 In the first aspect of the present application, an embodiment of the present application provides a calcining furnace 100 in which a material basin and a dust collecting hood are sealed, which includes a material basin 120, a dust collecting hood 130 and a shielding assembly 140. The material basin 120 is an existing basin-shaped structure with a trumpet-shaped opening at the top. The lower part of the material basin 120 is open, and the material basin 120 is provided with an inclined surface 121 for guiding the feeding. After the feed falls into the inclined surface 121, it can be collected at the bottom of the material basin 120 under the action of gravity, and finally discharged from the opening at the bottom of the material basin 120 and enter the furnace body 110; the dust collecting hood 130 is provided at the material basin 120. Above the basin 120, there is a gap between the end edge of the dust hood 130 and the inclined surface 121. The dust hood 130 is cylindrical, and has circular openings at both the top and bottom ends of the dust hood 130. The top serves as a feed port, and the feed falls into the basin 120 from the bottom end of the dust hood 130. The gap between the dust hood 130 and the basin 120 is closed by a shielding assembly 140. The dust hood 130 does not contact the basin 120, and a bracket can be set next to it. The dust hood 130 is installed on the bracket and fixed by bolting or welding. The bracket can also be fixed on the outside of the furnace body 110.

[0030] The shielding component 140 is a metal ring structure, which is annular as a whole. The shielding component 140 has a first edge and a second edge relative to each other. The first edge is the top edge of the shielding component 140, and the second edge is the bottom edge of the shielding component 140. The first edge is connected to the end edge of the dust collecting cover 130. Specifically, the first edge is welded to the bottom edge of the dust collecting cover 130, and can also be connected by bolting or other methods. The second edge is close to the inclined surface 121 to make the shielding component 140 spaced and closed, and the end of the second edge is in contact with the inclined surface 121. The second edge is in contact with the inclined surface 121. There is no gap between the inclined surfaces 121 to prevent dust from leaking out. The material basin 120 is rotatable relative to the shielding component 140, and during the rotation, the shielding component 140 always closes the interval. The material basin 120 and the shielding component 140 are not connected, and the two are in contact, and the contact point is annular. During the rotation of the material basin 120, the shielding component 140 maintains contact with the material basin 120 to form a tight seal. The shielding component 140 adopts a metal ring structure, which can effectively reduce the wear of the shielding component 140 during use and solve the problem of poor sealing.

[0031] The existing belt is used to seal the dust hood 130 and the material basin 120, but the belt is easily worn off or damaged by the high temperature of the furnace top, resulting in failure of the seal and a short effective period of the seal. The present application replaces the existing belt, and closes the gap between the dust hood 130 and the material basin 120 through the shielding component 140, connects the dust hood 130 through the first edge, forms an extension part at the end edge of the dust hood 130, and forms a tight seal between the dust hood 130 and the material basin 120 through the second edge close to the inclined surface 121, while not affecting the rotation of the material basin 120, providing a better sealing effect, being able to seal the flue gas tightly for a long time, and effectively preventing the leakage of flue gas, and the structure of the shielding component 140 is not easy to wear off or be damaged by high temperature, and is both high temperature resistant and wear-resistant, and can withstand the high temperature of the furnace top. At the same time, it prolongs the service life of the calcining furnace 100 and can be promoted and used in similar devices.

[0032] Please refer to Figure 2 In an optional embodiment, the second edge bends toward the middle of the basin 120, and the second edge is in an elastic deformation state, that is, the second edge generates elastic deformation when it is bent in the above manner, and relies on its elastic force to fit tightly with the inclined surface 121 of the basin 120; in an optional embodiment, the shielding assembly 140 includes a plurality of friction plates 141, and the friction plates 141 are made of strip-shaped stainless steel spring plates. The top of the spring plates are fixed by welding, screw connection or other means, and the bottom end of the spring plates is in an arc-shaped bending state and bends toward the middle of the basin 120. The spring plates are elastic when they are in a bent state and recover their deformation when they are in a straight state; a plurality of friction plates 141 are arranged side by side along a circle of the dust collecting cover 130 to form a ring structure, and adjacent friction plates 141 are close together, that is, the friction plates 141 are close to each other and arranged in sequence in a ring shape.

[0033] In an optional embodiment, the side of the friction plate 141 blocks the side of the adjacent friction plate 141, so that the side edges of the multiple friction plates 141 are staggered and stacked, that is, the edge of one friction plate 141 of the adjacent friction plates 141 is pressed on the edge of another friction plate 141, in the form of up and down stacking, so that the multiple friction plates 141 are staggered and stacked to form a fish scale-like structure; in an optional embodiment, the friction plate 141 is detachably connected to the dust cover 130, and the detachable connection can be fixed by screws or screws. When needed, the screws or screws can be removed and the friction plate 141 can be removed. In this way, when one of the friction plates 141 is damaged or falls off, it is convenient to replace, and the disassembly is simple and the installation is convenient, so that the normal and stable operation of the production can be maintained for a long time.

[0034] In an optional embodiment, the shielding assembly 140 also includes a locking member 142, which fixes the friction plate 141 to the dust hood 130. The locking member 142 is a bolt. A connecting hole is provided at the top of the friction plate 141. Through holes are provided at intervals on the bottom edge of the dust hood 130. The position of each through hole corresponds to the connecting hole. The friction plate 141 is fixed to the bottom end of the dust hood 130 by bolts passing through the connecting holes and the through holes. The arrangement of the friction plates 141 is still in a staggered and stacked arrangement to form a shielding structure around the bottom edge of the dust hood 130.

[0035] In an optional embodiment, a furnace body 110 is further included. The furnace body 110 is provided with an opening, which is located at the top of the furnace body 110. The other positions of the furnace body 110 are closed. The material basin 120 is rotatably connected to the furnace body 110 at the opening, so that the feed can enter the furnace body 110 from the material basin 120. Specifically, the material basin 120 is seated at the opening of the furnace body 110, and the lower part of the material basin 120 extends into the furnace body 110 to form a socket-type structure. The lower opening of the material basin 120 is located at the bottom end thereof, and the feed can enter the furnace body 110 from the bottom end opening of the material basin 120. In an optional embodiment, a material cover 150 is further included, which is used to seal the end of the material basin 120 so that the opening of the furnace body 110 is closed, and the opening of the material basin 120 is also closed. The material cover 150 is conical, and the edge size of the material cover 150 is larger than the bottom opening of the material basin 120. The conical surface of the material cover 150 is set so that when the feed falls to the material cover 150, it can slide into the furnace body 110 from all sides of the material cover 150 under the action of the conical surface. The top of the material cover 150 is connected to a winding device, such as a winder, by a rope. A fixed pulley is fixed above the dust collection cover 130, which is convenient for rope connection. When in use, the material cover 150 is lowered by the rope to open the opening of the material basin 120, and it is convenient to unload the material into the furnace body 110.

[0036] In an optional embodiment, a plurality of rollers 160 are further included, and the rollers 160 are connected to the sides of the material basin 120. Specifically, a plurality of spaced support rods are welded and fixed to the outer side of the material basin 120, and a recess for mounting the roller 160 is formed at the bottom end of the support rod. The roller 160 is inserted into the recess and a pin is used as the axle of the roller 160, and both ends of the pin are inserted into the recess at the bottom end of the support rod. In this way, the setting of the roller 160 is completed, and the roller 160 is supported on the top surface of the furnace body 110, so that when the material basin 120 rotates, the roller 160 can roll on the furnace body 110. In an optional embodiment, a driver is also included for driving the material basin 120 to rotate. The driver can use a motor 170. The motor 170 is fixed to the top of the furnace body 110, fixed by a screw, and is located next to the material basin 120. The output end of the motor 170 is connected to a gear, and the transmission gear is meshed with the gear at the output end. A circle of meshing teeth is also provided along the outer side of the material basin 120, and the transmission gear can also be meshed with the meshing teeth. In this way, the material basin 120 can be driven to rotate by the motor 170. The motor 170 can also use a conventional belt drive method to drive the material basin 120 to rotate. The driver can also use other driving devices as long as it can drive the material basin 120 to rotate.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "optional example" or "optional implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0038] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0039] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A calcining furnace with a material basin and a dust collecting hood sealed, characterized in that: include: A material basin (120) is provided with an inclined surface (121) for guiding material discharge; A dust collecting hood (130) is arranged above the material basin (120), and a gap is provided between the end edge of the dust collecting hood (130) and the inclined surface (121); The shielding assembly (140) is a metal ring structure having a first edge and a second edge relative to each other, wherein the first edge is connected to the end edge of the dust collecting hood (130), and the second edge is in close contact with the inclined surface (121) so that the shielding assembly (140) closes the gap, and the material basin (120) is rotatable relative to the shielding assembly (140), and during the rotation process, the shielding assembly (140) always closes the gap.

2. The calcining furnace with sealed material basin and dust collecting hood according to claim 1, characterized in that: The second edge is bent toward the middle of the basin (120), and the second edge is in an elastically deformed state.

3. The calcining furnace with sealed material basin and dust collecting hood according to claim 2, characterized in that: The shielding assembly (140) comprises a plurality of friction plates (141), and the plurality of friction plates (141) are arranged in parallel along a circumference of the dust collecting cover (130) to form a ring structure, and adjacent friction plates (141) are closely attached to each other.

4. The calcining furnace with sealed material basin and dust collecting hood according to claim 3, characterized in that: The side edges of the friction plates (141) shield the side edges of the adjacent friction plates (141), so that the side edges of the plurality of friction plates (141) are arranged in a staggered and stacked manner.

5. The calcining furnace with sealed material basin and dust collecting hood according to claim 4, characterized in that: The friction plate (141) is detachably connected to the dust collecting cover (130).

6. The calcining furnace with a sealed material basin and dust hood according to any one of claims 3 to 5, characterized in that: The shielding assembly (140) further comprises a locking member (142), wherein the locking member (142) fixes the friction plate (141) to the dust collecting cover (130).

7. The calcining furnace with sealed material basin and dust collecting hood according to claim 1, characterized in that: It also includes a furnace body (110), wherein the furnace body (110) is provided with an opening, and the material basin (120) is rotatably connected to the furnace body (110) at the opening, so that feed can enter the furnace body (110) from the material basin (120).

8. The calcining furnace with sealed material basin and dust collecting hood according to claim 7, characterized in that: It also includes a material cover (150) for sealing the end of the material basin (120) to close the opening.

9. The calcining furnace with sealed material basin and dust collecting hood according to claim 7, characterized in that: It also includes a plurality of rollers (160), wherein the rollers (160) are connected to the side surfaces of the material basin (120), and the rollers (160) are supported on the furnace body (110), so that when the material basin (120) rotates, the rollers (160) can roll on the furnace body (110).

10. The calcining furnace with sealed material basin and dust collecting hood according to claim 9, characterized in that: It also includes a driver for driving the material basin (120) to rotate.

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