High-temperature blanking rotating chute

Abstract

The utility model discloses a high-temperature blanking rotating chute which comprises an inclined roller, a driving device, a supporting device and the like. Two rolling belts fixedly connected with the roller are symmetrically arranged on the outer circumferential face of the roller, a refractory layer is built on the inner surface of the roller, and the inclination angle of the roller is 1-2 times of the repose angle of materials. The driving device supports the roller to rotate and provides rotating power for the roller. Supporting wheels of the supporting devices are located on the inclined lower side faces of the rolling belts to support the rolling belts and prevent the rollers from sliding downwards. The driving device and the supporting device are fixedly installed on the inclined roller support. And the lower opening of the roller is inserted into the connecting bin and is sealed with the connecting bin by elastic fish scales. Positioning wheels are evenly distributed on the outer circumference of a material receiving opening of the stock bin and matched with the side face of the rolling belt, and rapid positioning of insertion connection of the stock bin is achieved. By means of rotation of the chute, fixed falling points and fixed sliding lines of high-temperature materials are avoided, and local material supplementation or local maintenance is eliminated.

Description

Technical Field

[0001] The utility model is applied to the field of industrial furnace heating and relates to the blanking processing of high-temperature materials, in particular to a high-temperature blanking rotary chute. Background Art

[0002] In the field of industrial raw material manufacturing, such as preheating and calcining of limestone and non-ferrous ores, industrial furnaces are required for heating, which involves the feeding and discharging of furnaces, especially the discharging of high-temperature materials, which needs to be cooled before discharging. The preheating furnace needs to be insulated for discharging, but the difference between the discharge temperatures of the two is not much, both around 500-800℃. Such high temperatures cause thermal stress deformation of the material chute, and the service life is short. If a lining refractory layer is used, the refractory layer of the fixed material drop point or the sliding line will be damaged due to uneven heating, wear and other reasons during the material drop, and it is necessary to stop the machine for replenishment or rebuild.

[0003] CN220322047U discloses a roasting kiln discharge transition device, which is used for material transportation transition between the roasting kiln and the cooling kiln, and includes an upper cover, a middle shell, and a lower shell connected in sequence. The middle shell corresponds to the position of the roasting kiln burner. A material inlet connected to the roasting kiln outlet is arranged on the lower shell, and a discharge chute is arranged at the bottom of the lower shell. A screening discharge mechanism for screening materials is arranged above the discharge chute. The utility model screens the materials through inclined grate bars, and the ringed materials are collected at the flap under the action of gravity. The flap is opened at a fixed time to realize the automatic discharge of the ringed materials. At the same time, the flap can also prevent the materials that meet the requirements from flowing out from the trough-shaped heat-resistant chute during screening, so that the materials can pass smoothly into the cooling kiln for cooling. The device adopts a fixed discharge chute, which does not solve the above problems.

[0004] CN102538473B discloses an air-cooled operating chute of an oxidation pellet chain grate machine, comprising a central chute body, chute bodies on both sides, a cooling bellows, a vertical plate, a support, etc. The central chute body and the chute bodies on both sides are made of heat-resistant cast steel, and the air nozzle of the cooling bellows blows cooling air, and the cooling air blows the high-temperature hot air out of the chute body cavity through the opening end of the chute body. The cavity is cooled by the cooling air, so that the use temperature of the operating chute is greatly reduced, and the service life of the chute body is extended. The operating chute is also fixed, and air cooling is used to reduce the chute temperature. It is suitable for discharging from a calcining furnace, but not suitable for discharging from a preheating furnace.

[0005] CN204240787U discloses a kiln tail sealing device, which connects the preheater and the rotary kiln. The fish scales slide and rub against the outer surface of the kiln body to seal the kiln body, preventing smoke from overflowing and dust from scattering. Its feed chute is also fixed, extending into the high-temperature rotary kiln, and needs to be replaced regularly together with the fish scales. Utility Model Content

[0006] The technical problem solved by the utility model is to provide a high-temperature material dropping rotary chute. When the high-temperature material is dropped, the chute rotates to avoid damage to the refractory material by the fixed drop point and the fixed slide line, thereby ensuring smooth and continuous production.

[0007] The technical solution adopted by the utility model is: the high-temperature blanking rotary chute includes a drum, a driving device, a supporting device, etc. The drum is arranged obliquely, and two rollers fixedly connected to the drum are arranged symmetrically on the outer circumference, and the inner surface of the drum is built with a refractory layer. The driving device supports the drum and provides rotational power for the drum. The supporting device includes a supporting wheel, which is located on the oblique lower side of the roller, supports the roller, and prevents the drum from sliding down. The driving device and the supporting device are fixedly installed on the drum bracket, and the drum bracket is inclined.

[0008] Preferably, the inclination angle of the roller should be 1-2 times the repose angle of the material.

[0009] Preferably, the support wheels support the lower roller belt of the drum to prevent the drum from being subjected to tension, and there are two symmetrical support wheels to increase the safety factor.

[0010] Preferably, the driving device comprises a driven wheel, a power device, and a driving wheel; the driving wheel and the driven wheel cooperate with a roller, and the power device is connected to the driving wheel by a chain or belt. The power device drives the driving wheel to rotate, and the driving wheel drives the drum to rotate through the roller.

[0011] Preferably, the lower opening of the drum is inserted into and connected to a silo, and the two are sealed with elastic fish scales; the silo is supported by a silo bracket.

[0012] Preferably, positioning wheels are evenly distributed on the outer circumference of the material receiving port of the silo, and the positioning wheels cooperate with the side surfaces of the roller belt to achieve rapid positioning of the silo for insertion and connection.

[0013] Preferably, the silo support comprises a lifting cylinder, a rotating plate, a hydraulic cylinder, a fixed frame, a frame, and a guide arc plate; the guide arc plate is fixedly connected to the fixed frame, the rotating plate is connected to the rotating shaft of the fixed frame, the upper surface of the rotating plate is fixedly connected to the lifting cylinder, the lower surface is connected to the cylinder rod of the hydraulic cylinder, and the cylinder rod of the lifting cylinder is connected to the frame. The line connecting the rotating shaft center of the rotating plate and the bottom edge positioning wheel is parallel to the rotation center line of the drum, or is located below the straight line passing through the bottom edge positioning wheel parallel to the rotation center line of the drum, so as to prevent the positioning wheel from hitting the drum when the silo rotates with the rotating plate.

[0014] The beneficial effects of the utility model are as follows: the utility model utilizes the rotation of the chute to avoid the fixed landing point and fixed sliding line of the high-temperature material, thereby increasing the service life of the refractory layer, eliminating shutdown accidents caused by local material replenishment or local maintenance, and ensuring long-term smooth operation of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view schematic diagram of embodiment 1;

[0016] Figure 2 yes Figure 1 A-direction schematic diagram;

[0017] Figure 3 yes Figure 2 A top view of

[0018] Figure 4 This is a schematic diagram of connecting a rotary kiln in Example 1;

[0019] Figure 5 This is a schematic diagram of a silo support in Example 2;

[0020] Figure 6 This is a schematic diagram of the silo movement in Example 2;

[0021] In the figure: 1-drum, 2-roller belt, 3-refractory layer, 4-positioning wheel, 5-bin, 6-bin bracket, 7-support wheel, 8-driven wheel, 9-drum bracket, 10-power device, 11-driving wheel;

[0022] 61-lifting cylinder, 62-turn plate, 63-hydraulic cylinder, 64-fixed frame, 65-frame, 66-guide arc plate. DETAILED DESCRIPTION

[0023] To simplify the drawing, some steel structure components are not shown, such as ribs, support blocks, and tilting mechanisms on the silo. Example

[0024] The structure of the high temperature blanking rotary chute in this embodiment is as shown in the attached figure. Figure 1-3 As shown, it includes a roller 1, a driving device, a supporting device, a steel structure, a silo 5, etc.

[0025] Two rollers 2 are symmetrically arranged on the outer circumference of the drum 1, and the rollers 2 are fixedly connected to the drum 1. The inner surface of the drum is built with a refractory layer 3. The drum is arranged obliquely, and its upper opening is a material drop opening, and the lower opening is inserted into a connecting silo 5.

[0026] The driving device includes a driven wheel 8, a power device 10, a driving wheel 11, etc. The driving wheel 11 and the driven wheel 8 cooperate with the roller belt of the drum to support the drum. The power device 10 includes a motor and a reduction mechanism to provide power for the rotation of the drum. The power device is connected by a chain or belt to drive the driving wheel 11 to rotate, and the driving wheel 11 drives the drum 1 to rotate. The driven wheel 8 rotates with the rotation of the drum and is mainly used to support the rotation of the drum.

[0027] The supporting device includes a supporting wheel 7, which is located at the lower side of the roller 2 to support the roller and prevent the roller from sliding. Figure 1The support wheel 7 is shown to support the lower roller of the drum to prevent the drum from being subjected to tension, and can also be used to support the upper roller of the drum. Figure 2 The support wheels 7 are shown as two symmetrical ones, and one or more can also be used, as long as the support requirements are met. When the drum rotates, the support wheels 7 rotate with the roller belt, after all, the rolling friction is less than the sliding friction.

[0028] The steel structure includes a roller bracket 9 and a silo bracket 6. The driving device and the supporting device are fixedly mounted on the roller bracket 9. The roller bracket 9 is inclined so that the roller is inclined. The inclination angle is preferably 1-2 times the material repose angle. This inclination helps the high-temperature material to slide down by its own weight. When the inclination angle is small, the material slides down slowly. When the silo is removed, it affects the time for closing the material to fall. When the inclination angle is large, the material impact is large, which can easily cause the high-temperature material to pulverize and affect the product quality. The silo bracket 6 is used to support the silo 5. In this embodiment, the two are integrated. After the silo 5 is filled with high-temperature materials, a mechanical device is used to flip the high-temperature materials in the silo and drop them into the calcining kiln or transport them to the next process.

[0029] The material receiving port of the silo 5 and the roller insertion type are sealed with elastic fish scales, and the positioning wheels 4 are evenly distributed on the outer circumference of the material receiving port. When the silo 5 is inserted into the lower opening of the roller, the positioning wheels 4 contact the side of the lower roller belt of the roller to achieve positioning. Even if the friction with the roller belt causes the silo to generate torque, the positioning wheels 4 can greatly reduce the rotational force of the roller belt on the silo, so that the silo remains fixed.

[0030] When this embodiment is used, the upper opening of the drum is sealed and connected to the furnace of the previous process. The high-temperature material enters the drum from the material opening. The inclination angle of the drum is greater than the repose angle of the material, so it can slide downward by its own weight. When the drum rotates, the high-temperature material and the refractory layer form a relative arc and slide into the silo. When the silo is full, the material opening stops dropping, the silo retreats obliquely downward, separates from the drum, and then flips or transports, sending the high-temperature material to the next process.

[0031] If this embodiment is applied to the connection between the preheater and the rotary kiln, the bottom of the silo is opened and sealed with the elastic fish scales of the rotary kiln. Figure 4 As shown, the two tilt angles of the silo can be adjusted according to the tilt angle of the rotary kiln. If the fish scales or the refractory layer in the silo need to be repaired, the material can be stopped, removed and quickly replaced without stopping production. Example

[0032] This embodiment is to adjust the silo support structure of embodiment 1, as shown in the attached Figure 5 and attached Figure 6 In Example 1, the silo 5 and the silo support 6 are integrated. When separated from the drum, they need to be moved obliquely downward and then horizontally. The mechanical device is relatively complicated. After multiple repairs, it is changed to this embodiment.

[0033] In this embodiment, the two are independent, and the structure of the silo 5 is the same as that of the embodiment 1. The silo support includes a lifting cylinder 61, a rotating plate 62, a hydraulic cylinder 63, a fixing frame 64, a frame 65, a guide arc plate 66, etc. Figure 5 The fixed frame 64 is fixed on the steel structure, and the guide arc plate 66 is fixedly connected to the fixed frame 64 to support the silo 5. The rotating plate 62 is connected to the rotating shaft of the fixed frame 64 and can rotate freely around the rotating shaft. The upper surface of the rotating plate 62 is fixedly connected to the lifting cylinder 61, and the lower surface is connected to the cylinder rod of the hydraulic cylinder 63. The cylinder rod of the lifting cylinder 61 is connected to the frame 65, and the hydraulic cylinder 63 is rotatably connected to the steel structure.

[0034] When the silo is filled with high temperature materials, Figure 6 As shown, the lifting cylinder 61 retracts, and the silo moves obliquely downward along the guide arc plate 66 under the action of gravity. After the lifting cylinder retracts to the bottom, the cylinder rod of the hydraulic cylinder 63 retracts, the rotating plate 62 rotates, and the silo gradually changes from an inclined position to a horizontal position. In order to avoid the positioning wheel from colliding with the roller, the line connecting the center of the rotating shaft of the rotating plate 62 and the lowest positioning wheel is parallel to the rotation center line of the roller, or is located below the straight line passing through the lowest positioning wheel parallel to the rotation center line of the roller. After the hydraulic cylinder rod is fully retracted, the silo is horizontal and can be transported away by a forklift or crane to enter the next process. To replace the silo, the silo is placed on the rotating plate, the hydraulic cylinder rod extends, and the rotating plate rotates. When the silo contacts the guide arc plate, it stops, the lifting cylinder is lifted, and the hopper is inserted into the drop port of the roller, and the fish scale is sealed.

[0035] This embodiment has only two cylinders in motion, which together with position probes or sensors can realize the automation of cylinder motion. The silo bracket in this embodiment has a simple structure, is easy to operate, and greatly reduces maintenance workload. Together with the rotating chute, it ensures long-term smooth production.

[0036] The utility model utilizes a rotating chute to avoid the fixed drop point and fixed sliding line of high-temperature materials, so that the refractory layer on the inner surface of the drum is heated and impacted evenly, the service life of the refractory layer is increased, and there is no downtime accident caused by local feeding or local maintenance, which ensures the long-term smooth operation of production. The improvement of the silo bracket has a simple structure, convenient operation, less maintenance, and improves the production operation efficiency.

Claims

1. A high-temperature blanking rotary chute, characterized in that: The invention comprises a roller (1), a driving device and a supporting device; the roller (1) is arranged obliquely, and two rollers (2) fixedly connected to the roller (1) are arranged symmetrically on the outer circumference; the inner surface of the roller (1) is built with a refractory layer (3); the supporting device comprises a supporting wheel (7), the supporting wheel (7) is located on the oblique lower side of the roller (2), and supports the roller (2); the driving device supports the roller (1) and provides rotational power for the roller (1); the driving device and the supporting device are fixedly mounted on a roller bracket (9), and the roller bracket (9) is inclined.

2. A high temperature blanking rotary chute according to claim 1, characterized in that: The inclination angle of the roller (1) is 1 to 2 times the repose angle of the material.

3. A high temperature blanking rotary chute according to claim 1, characterized in that: The supporting wheels (7) support the lower roller belt of the drum (1), and there are two supporting wheels (7) symmetrically.

4. A high temperature blanking rotary chute according to claim 1, characterized in that: The driving device comprises a driven wheel (8), a power device (10), and a driving wheel (11); the driving wheel (11) and the driven wheel (8) cooperate with the roller belt (2), and the power device (10) is connected to the driving wheel (11) by a chain or a belt.

5. The high-temperature blanking rotary chute according to claim 1, characterized in that: The lower opening of the drum (1) is inserted into a connecting silo (5), and the two are sealed by elastic fish scales; the silo (5) is supported by a silo bracket (6).

6. A high temperature blanking rotary chute according to claim 5, characterized in that: Positioning wheels (4) are evenly distributed on the outer circumference of the material receiving opening of the material bin (5), and the positioning wheels (4) cooperate with the side surfaces of the rolling belt (2).

7. A high temperature blanking rotary chute according to claim 6, characterized in that: The silo support (6) comprises a lifting cylinder (61), a rotating plate (62), a hydraulic cylinder (63), a fixed frame (64), a frame (65), and a guide arc plate (66); the guide arc plate (66) is fixedly connected to the fixed frame (64), the rotating plate (62) is connected to the rotating shaft of the fixed frame (64), the upper surface of the rotating plate (62) is fixedly connected to the lifting cylinder (61), and the lower surface is connected to the cylinder rod of the hydraulic cylinder (63), and the cylinder rod of the lifting cylinder (61) is connected to the frame (65).

8. A high temperature blanking rotary chute according to claim 7, characterized in that: The line connecting the center of the rotating shaft of the rotating plate (62) and the bottom edge positioning wheel (4) is parallel to the rotation center line of the roller (1), or is located below the straight line passing through the bottom edge positioning wheel and parallel to the rotation center line of the roller.

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