Rotary kiln powder recovery device

Abstract

The utility model belongs to the technical field of rotary kiln devices, and particularly discloses a rotary kiln powder recovery device which is characterized in that a plurality of digging spoons are arranged on the outer side wall of the feeding end of a rotary kiln barrel at intervals in the circumferential direction, and each digging spoon comprises a shoveling plate and a storage cavity; blanking holes penetrating through the wall of the rotary kiln cylinder are formed in the positions, corresponding to the storage cavities, of the rotary kiln cylinder, and the storage cavities are communicated with a cavity of the rotary kiln cylinder through the blanking holes. The material digging spoon rotating to the material digging position below the rotary kiln barrel can shovel up powder on a bottom plate of the kiln head box and collect the powder into the material storage cavity, and when the material digging spoon storing the powder in the material storage cavity rotates to the discharging position above the rotary kiln barrel along with the rotary kiln barrel, the powder stored in the material storage cavity can fall into the rotary kiln barrel through the material falling hole. Deposited materials in the kiln head box are timely and reliably recycled, and the stability of the roasting process is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary kiln devices, and specifically discloses a rotary kiln powder recovery device. Background Art

[0002] As is known, rotary kiln is a key equipment in cement, metallurgy, chemical industry and other industries, and is often used in building materials, metallurgy, chemical industry and other industries for high temperature reactions, such as calcination, sintering, drying, etc. In the molybdenum concentrate roasting rotary kiln, the two ends of the rotary kiln body are rotatably connected with the kiln head box and the kiln tail box. The kiln head box is the feed end and the process ventilation outlet. A large amount of semi-cooked powder will be deposited at the bottom of the kiln head box. In the prior art, a screw conveyor is used to collect and discharge it and return it to the kiln regularly. However, the high temperature powder is easy to cause the screw conveyor to malfunction, and a large amount of semi-cooked powder returned to the kiln at one time is easy to cause the roasting process to be unstable. Summary of the invention

[0003] In order to solve the problems in the background technology, the utility model discloses a rotary kiln powder recovery device. When the cylinder rotates, a digging spoon outside the cylinder automatically recovers the powder into the cylinder, thereby realizing timely and reliable recovery of deposited materials in the kiln head box and ensuring the stability of the roasting process.

[0004] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0005] A rotary kiln powder recovery device, wherein the feeding end of the rotary kiln cylinder extends into a kiln head box and is rotatably connected to the kiln head box, a plurality of digging spoons are circumferentially spaced on the outer wall of the feeding end of the rotary kiln cylinder, the digging spoons include a shoveling plate and a storage cavity, and positions on the rotary kiln cylinder corresponding to the storage cavity are respectively provided with drop holes penetrating the rotary kiln cylinder wall, the storage cavity is connected with the rotary kiln cylinder cavity through the drop holes, when the rotary kiln cylinder rotates relative to the kiln head box under the action of a driving mechanism, the digging spoon rotated to the digging position below the rotary kiln cylinder can scoop up the powder on the bottom plate of the kiln head box and collect it into the storage cavity, when the digging spoon with powder stored in the storage cavity rotates with the rotary kiln cylinder to the unloading position above the rotary kiln cylinder, the powder stored in the storage cavity can fall into the rotary kiln cylinder through the drop holes.

[0006] Furthermore, in the rotary kiln powder recovery device, the digging spoon is detachably connected to the rotary kiln cylinder.

[0007] Furthermore, in the rotary kiln powder recovery device, the shoveling plate is an arc-shaped structure, the shoveling plate includes a shoveling end for shoveling materials and a mounting end extending obliquely upward, fan-shaped baffles are respectively arranged on both sides of the shoveling plate, the baffles and the shoveling plate together form a storage cavity with openings at both ends, and the openings are respectively a storage cavity feed port arranged toward the shoveling end of the shoveling plate and a storage cavity drop port arranged toward the drop hole.

[0008] Furthermore, in the rotary kiln powder recovery device, the feed opening of the storage chamber is arranged in the same direction as the rotation direction of the cylinder.

[0009] Furthermore, the rotary kiln powder recovery device is provided with a matching movable plate at the blanking port of the storage chamber, one end of the movable plate is hingedly connected to the baffle, and the other end is connected to the mounting end of the shoveling plate through an elastic or flexible connector, and the movable plate can rotate around the hinge axis relative to the shoveling plate to open and close the channel between the blanking hole and the blanking port of the storage chamber.

[0010] Furthermore, in the rotary kiln powder recovery device, the bottom plate of the kiln head box is an arc-shaped plate adapted to the outer cylindrical shape of the cylinder.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model discloses a rotary kiln powder recovery device, in which a plurality of scooping spoons are arranged at intervals along the circumferential direction on the outer wall of the rotary kiln cylinder at the feeding end of the rotary kiln cylinder, the scooping spoons include shoveling plates and a storage cavity, and positions on the rotary kiln cylinder corresponding to the storage cavity are respectively provided with drop holes penetrating the rotary kiln cylinder wall, the storage cavity is connected with the rotary kiln cylinder cavity through the drop holes, when the rotary kiln cylinder rotates relative to the kiln head box under the action of a driving mechanism, the scooping spoon rotating to the scooping position below the rotary kiln cylinder can scoop up the powder on the bottom plate of the kiln head box and collect it into the storage cavity, when the scooping spoon with powder stored in the storage cavity rotates with the rotary kiln cylinder to the unloading position above the rotary kiln cylinder, the powder stored in the storage cavity can fall into the rotary kiln cylinder through the drop holes, and the cylinder rotates itself, and the scooping spoon automatically recovers the powder into the cylinder, thereby realizing the timely and reliable recovery of the deposited material in the kiln head box and ensuring the stability of the roasting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the rotary kiln powder recovery device of the utility model;

[0014] Figure 2 This is a three-dimensional structure diagram of the digging spoon in the utility model. Figure 1 ;

[0015] Figure 3 This is a three-dimensional structure diagram of the digging spoon in the utility model. Figure 2 ;

[0016] In the above figure: 1-kiln head box; 2-kiln head box bottom plate; 3-cylinder; 4-digging spoon; 5-dropping hole; 4.1-first baffle; 4.2-rotating shaft; 4.3-movable plate; 4.4-second baffle; 4.5-shovel plate; 4.6-connecting piece. DETAILED DESCRIPTION

[0017] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. In addition, a brief description is given of the orientation involved in this specific implementation: the directions or positional relationships indicated by "front", "rear", "up", "down", "left", "right", etc., of each structural member mentioned below refer to the orientation or positional relationship shown in the accompanying drawings; these positional relationships are only for the convenience of description and simplified description, and do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.

[0019] Combined with Figure 1-3The utility model is a kind of rotary kiln powder recovery device, the feeding end of the rotary kiln cylinder 3 extends into the kiln head box 1 and is rotatably connected to the kiln head box 1, so that it is convenient to feed materials from the kiln head box 1 into the cylinder 3. The kiln head box 1 is a hollow box structure with one side open and the other sides closed. The kiln head box bottom plate 2 is an arc-shaped flexible plate adapted to the outer cylindrical surface shape of the cylinder 3 to avoid the interference of the kiln head box 1 on the rotation of the cylinder 3. The cylinder 3 has a relatively arranged feeding end and a discharging end along its extension direction, and the feeding end extends into the kiln head box 1. The cylinder 3 is inclined at a preset angle relative to the horizontal plane, and the preset angle can be set to 3°~5°. Among them, the position of the feeding end is higher than the position of the discharging end, so that the powder can be automatically fed into the cylinder 3. A plurality of digging spoons 4 are arranged at intervals along the circumferential direction on the outer side wall of the feeding end of the rotary kiln cylinder 3. The digging spoon 4 includes a shoveling plate 4.5 and a storage cavity, which is connected to the storage cavity on the rotary kiln cylinder 3. The positions corresponding to the cavities are respectively provided with drop holes 5 penetrating the wall of the rotary kiln cylinder 3, and the storage cavity is connected with the cavity of the rotary kiln cylinder 3 through the drop holes 5. When the rotary kiln cylinder 3 rotates relative to the kiln head box 1 under the action of the driving mechanism, the digging spoon 4 rotated to the digging position below the rotary kiln cylinder 3 can scoop up the powder on the bottom plate 2 of the kiln head box and collect it into the storage cavity. The digging spoon 4 with the powder stored in the storage cavity rotates with the rotary kiln cylinder 3 to the unloading position above the rotary kiln cylinder 3. When the kiln body 3 is rotated, the powder stored in the storage cavity can fall into the rotary kiln cylinder 3 through the drop hole 5. The digging spoon 4 will squeeze the bottom plate 2 of the kiln head box during the digging process. The bottom plate 2 of the kiln head box is a flexible plate, which can buffer the squeezing of the digging spoon 4 to avoid damage to the bottom plate 2 of the kiln head box. The kiln head box is rotated by the cylinder 3 itself, and the digging spoon 4 automatically recovers the powder into the cylinder 3, thereby realizing the timely and reliable recovery of the deposited material in the kiln head box 1 and ensuring the stability of the roasting process.

[0020] As an optional design, the rotary kiln powder recovery device is preferably provided, wherein the digging scoop 4 is detachably connected to the rotary kiln cylinder 3 , so that the replacement and maintenance of the digging scoop 4 is convenient.

[0021] As an optional design, the rotary kiln powder recovery device is preferred, the shoveling plate 4.5 is an arc-shaped structure, the shoveling plate 4.5 includes a shoveling end for shoveling materials and a mounting end extending obliquely upward, a fan-shaped first baffle 4.1 is respectively provided on the left side of the shoveling plate 4.5, and a fan-shaped second baffle 4.4 is respectively provided on the right side of the shoveling plate 4.5, the first baffle 4.1, the second baffle 4.4 and the shoveling plate 4.5 together form a storage cavity with openings at both ends, the openings are respectively a storage cavity feed port arranged toward the shoveling end of the shoveling plate 4.5 and a storage cavity drop port arranged toward the drop hole 5, when the cylinder 3 rotates, the shoveling plate 4.5 shovels up the powder on the bottom plate 2 of the kiln head box, and the powder shoveled by the shoveling plate 4.5 is continuously accumulated in the storage cavity.

[0022] As an optional design, the rotary kiln powder recovery device is preferably provided with a material storage chamber feed port facing the same direction as the rotation direction of the cylinder 3. When the cylinder 3 rotates, the shoveling plate 4.5 can scoop up the powder on the bottom plate 2 of the kiln head box.

[0023] As an optional design, the rotary kiln powder recovery device is preferably provided with a matching movable plate 4.3 at the discharge port of the storage chamber, one end of the movable plate 4.3 is hingedly connected to the first baffle plate 4.1 and the second baffle plate 4.4 through a rotating shaft 4.2, and the other end is connected to the mounting end of the shoveling plate 4.5 through an elastic or flexible connector 4.6. When the digging spoon 4 rotates with the cylinder 3 to the digging position below the rotary kiln cylinder 3, under the action of gravity, the movable plate 4.3 covers between the first baffle plate 4.1, the second baffle plate 4.4 and the shoveling plate 4.5 to close the discharge end of the storage chamber, and the digging spoon 4 with powder stored in the storage chamber rotates with the rotary kiln cylinder 3 to the rotary kiln cylinder 3. When the kiln is in the unloading position, the movable plate 4.3 rotates around the rotating shaft 4.2 to open the discharge end of the storage chamber, and the channel between the material discharge hole 5 and the material discharge port of the storage chamber is opened and closed by the movable plate 4.3 to realize the recovery of the deposited material in the kiln head box 1. As an optional design, it is preferred that the first baffle plate 4.1, the second baffle plate 4.4 and the shovel plate 4.5 are provided with a retaining edge on the side facing the movable plate 4.3, and the retaining edge can limit the tightness of the movable plate 4.3 when covering the first baffle plate 4.1, the second baffle plate 4.4 and the shovel plate 4.5, so as to avoid the movable plate 4.3 being stuck between the first baffle plate 4.1, the second baffle plate 4.4 and the shovel plate 4.5, so as to prevent the movable plate 4.3 from being unable to rotate around the rotating shaft 4.2.

[0024] The working process of the utility model is as follows:

[0025] The feeding end of the rotary kiln cylinder 3 extends into the kiln head box 1 and is rotatably connected to the kiln head box 1. The cylinder 3 is tilted at a preset angle relative to the horizontal plane. The position of the feeding end is higher than the position of the discharging end. When the rotary kiln cylinder 3 rotates relative to the kiln head box 1 under the action of the driving mechanism, the digging spoon 4 rotates to the digging position below the rotary kiln cylinder 3 to scoop up the powder on the bottom plate 2 of the kiln head box and collect it into the storage cavity. The movable plate 4.3 covers the first baffle plate 4.1, the second baffle plate 4.4 and the shoveling plate 4 under the action of gravity. .5, the discharge end of the storage chamber is closed, and when the digging spoon 4 with powder stored in the storage chamber rotates with the rotary kiln cylinder 3 to the unloading position above the rotary kiln cylinder 3, the movable plate 4.3 rotates around the rotating shaft 4.2 under the action of gravity to open the discharge end of the storage chamber, and the powder stored in the storage chamber falls into the rotary kiln cylinder 3 through the dropping hole 5. By utilizing the rotation of the cylinder 3 itself, the digging spoon 4 automatically recovers the powder into the cylinder 3, thereby realizing the timely and reliable recovery of the deposited material in the kiln head box 1 and ensuring the stability of the roasting process.

[0026] The above description is only an application implementation method of the present utility model, but the protection scope of the present utility model is not limited to this, and the right scope of the present utility model cannot be limited by this. Any equivalent changes made according to the technical solution of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A rotary kiln powder recovery device, wherein the feed end of the rotary kiln cylinder extends into the kiln head box and is rotatably connected to the kiln head box, characterized in that: A plurality of scooping spoons are arranged at intervals along the circumferential direction on the outer wall of the feed end of the rotary kiln cylinder, and the scooping spoons include shoveling plates and storage cavities. Dropping holes penetrating the wall of the rotary kiln cylinder are respectively arranged at positions on the rotary kiln cylinder corresponding to the storage cavities, and the storage cavities are connected with the cavity of the rotary kiln cylinder through the dropping holes. When the rotary kiln cylinder rotates relative to the kiln head box under the action of the driving mechanism, the scooping spoon rotating to the scooping position below the rotary kiln cylinder can scoop up the powder on the bottom plate of the kiln head box and collect it into the storage cavity. When the scooping spoon with powder stored in the storage cavity rotates with the rotary kiln cylinder to the unloading position above the rotary kiln cylinder, the powder stored in the storage cavity can fall into the rotary kiln cylinder through the dropping holes.

2. The rotary kiln powder recovery device according to claim 1 is characterized in that: The digging spoon is detachably connected to the rotary kiln cylinder.

3. The rotary kiln powder recovery device according to claim 1 or 2, characterized in that: The scraping plate is an arc-shaped structure, which includes a scraping end for scraping materials and a mounting end extending obliquely upward. Fan-shaped baffles are respectively arranged on both sides of the scraping plate. The baffles and the scraping plate together form a storage cavity with openings at both ends. The openings are respectively a storage cavity feed port arranged toward the scraping end of the scraping plate and a storage cavity drop port arranged toward the drop hole.

4. The rotary kiln powder recovery device according to claim 3 is characterized in that: The feeding port of the material storage chamber is arranged in the same direction as the rotation direction of the cylinder.

5. The rotary kiln powder recovery device according to claim 3 is characterized in that: A matching movable plate is provided at the blanking port of the storage chamber, one end of the movable plate is hingedly connected to the baffle, and the other end is connected to the mounting end of the shoveling plate through an elastic or flexible connector. The movable plate can rotate around the hinge axis relative to the shoveling plate to open and close the channel between the blanking hole and the blanking port of the storage chamber.

6. The rotary kiln powder recovery device according to claim 3 is characterized in that: The bottom plate of the kiln head box is an arc-shaped plate adapted to the outer cylindrical shape of the cylinder.

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