Uniform material distribution device for pellets

Abstract

The invention belongs to the technical field of steel production, and discloses a uniform distribution device for pellets. Comprising a wide belt conveyor, a roller type material distributor and a primary material flattening assembly. A primary material flattening assembly is arranged between the wide belt conveyor and the roller type material distributor and used for changing the position and the direction of thick pellets falling from a wide belt in the wide belt conveyor. The tail end of the roller type distributor is arranged above the trolley, and a material level indicator set used for measuring the thickness of materials on the trolley and a material leveling brush set used for leveling the materials are further arranged above the trolley. The device provided by the invention can flatten materials in pellet production so as to ensure roasting consistency.

Description

Technical Field

[0001] The invention belongs to the technical field of steel production, and relates to a pellet uniform distribution device. Background Art

[0002] For the pelletizing process of steel enterprises, the control of the material thickness of the trolley is an important production indicator. The distribution of the material layer thickness directly affects the production efficiency and quality of the pelletized ore, which in turn affects the output and quality of the finished ore, and even affects the quality of steel products.

[0003] At present, the steel enterprises generally use the "swing belt / shuttle feeding-wide belt-roller feeding device" method to feed the pellets in the pellet trolley. There are many defects and deficiencies in the control of the uniformity of the thickness of the material field, which are mainly reflected in:

[0004] (1) Swinging belt / shuttle type reciprocating cloth, due to mechanical structure or equipment speed difference, resulting in uneven material layer thickness;

[0005] (2) In the process of "wide belt-roller distributor-trolley", the raw balls roll freely, and the adjustment degree of uneven distribution is low, which cannot completely improve the problem of uneven thickness of the material layer;

[0006] (3) Due to the uneven material layer, some pellets have quality problems during the subsequent drying, preheating and roasting of the pellets, which reduces the production quality of the pellets. Summary of the invention

[0007] In order to overcome the shortcomings of the prior art and to address the problem of uniform material distribution on pellet trolleys in existing steel enterprises, the present invention provides a pellet uniform distribution device. The device provided by the present invention can level the material during pellet production to ensure roasting consistency.

[0008] The above object of the present invention is achieved through the following technical solutions:

[0009] A pellet uniform distribution device comprises a wide belt conveyor, a roller distributor and a primary material leveling assembly; the primary material leveling assembly is arranged between the wide belt conveyor and the roller distributor for changing the position and direction of thicker pellets dropped from the wide belt of the wide belt conveyor; the end of the roller distributor is arranged above a trolley, and a material level meter group for measuring the thickness of the material on the trolley and a material leveling brush group for leveling the material are also arranged above the trolley.

[0010] The primary flat material assembly is arranged at the unloading position of the wide belt and is arranged above the roller distributor.

[0011] The width of the primary flat material assembly is the same as the width of the wide belt of the wide belt conveyor, and the length of the primary flat material assembly is 1 / 3 to 1 / 2 of the length of the roller distributor.

[0012] A plurality of staggered conical material distribution structures are arranged on the surface of the primary flat material component, and the contact surface between the conical bottom and the material is a smooth surface.

[0013] The material level meter group includes several laser distance meters arranged in parallel, which are fixed on the top of the trolley and the end of the roller distributor through the material level meter fixing bracket; the specific number of laser distance meters can be determined according to the actual width of the trolley, preferably 4-7, so as to complete the real-time measurement of material thickness and then adjust the material thickness.

[0014] The flat material brush assembly is integrally arranged above the trolley through a fixing frame.

[0015] The flat material brush group includes a telescopic component, a distance measuring component, a lifting component, a brush component, and a guide component; the telescopic component is fixed on a fixed frame, the front end output end of the telescopic component is connected to the brush component, a distance measuring component is arranged between the brush component and the telescopic component, and the brush component realizes up and down, front and back guiding displacement through the lifting component and the guide component.

[0016] The telescopic assembly comprises a telescopic motor and a telescopic connecting rod; the output end of the telescopic motor is connected to the telescopic connecting rod, and the front end of the telescopic connecting rod is connected to one end of the brush assembly.

[0017] The distance measuring assembly is arranged above the telescopic connecting rod through a fixing plate. The distance measuring assembly comprises a far limit proximity switch, an intermediate position proximity switch and a near limit proximity switch.

[0018] The brush assembly comprises a brush frame, on which a plurality of flat brushes are arranged, and the flat brushes are preferably made of fine stainless steel material. The distance between every two adjacent flat brushes is 0.3-0.5m.

[0019] The length of the brush rack is the same as the width of the trolley.

[0020] A guide assembly is arranged on the side of the fixed frame, the guide assembly comprises a guide groove, a plurality of rollers are arranged on both sides of the bottom of the brush frame, the guide groove is arranged on the fixed frame, and the rollers move in the guide groove.

[0021] A lifting assembly is arranged at the bottom of the fixing frame, and the lifting assembly comprises a lifting cylinder, and the front end of the cylinder rod of the lifting cylinder is connected to the bottom surface of the fixing frame. The lifting cylinder is connected to the bottom surface of the fixing frame through a cylinder fixing frame.

[0022] The device is also equipped with a control cabinet, which includes a PLC control system. The wide belt conveyor, roller feeder, level meter group, lifting cylinder, trolley, telescopic motor, far limit proximity switch, middle position proximity switch, and near limit proximity switch are respectively connected to the PLC control system, and are not limited to a specific model, as long as their working functions are realized.

[0023] The beneficial effects of the present invention compared with the prior art are:

[0024] (1) A primary material leveling component is installed between the wide belt conveyor and the roller distributor. The mechanical structure is used to change the position and direction of the thicker pellets dropped from the wide belt of the wide belt conveyor to achieve primary material leveling.

[0025] (2) In the process of roller distributor to trolley, a flat material brush group is installed, and the relatively uniform pellets are brushed back and forth by mechanical structure to achieve further flattening. The flat material brush group has a low power consumption design, adopts the bottom roller support movement mode, and the telescopic motor has low power consumption.

[0026] (3) Install a level meter group in front of the leveling brush group to measure the average material level of the pellets and control the leveling brush group to move at an appropriate height;

[0027] (4) Even distribution of materials provides stable production conditions for the drying, preheating and roasting of pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a pellet uniform distribution device of the present invention.

[0029] Figure 2 It is a partial schematic diagram of a primary flat material assembly of the present invention.

[0030] Figure 3 It is a schematic diagram of a flat material brush assembly of the present invention.

[0031] In the figure: 1. wide belt conveyor, 2. roller distributor, 3. primary flat material assembly, 4. material level meter assembly, 5. flat material brush assembly, 6. trolley, 501. lifting assembly, 502. roller, 503. telescopic motor, 504. telescopic connecting rod, 505. far limit proximity switch, 506. middle position proximity switch, 507. near limit proximity switch. DETAILED DESCRIPTION

[0032] The present invention is described in detail below by specific examples, but the protection scope of the present invention is not limited. Unless otherwise specified, the experimental methods used in the present invention are all conventional methods, and the experimental equipment, materials, reagents, etc. used can be obtained from commercial channels.

[0033] Example 1

[0034] Primary material leveling component: A primary material leveling component 3 is installed between the wide belt of the wide belt conveyor 1 and the roller distributor 2. The mechanical structure is used to change the position and direction of the thicker pellets dropped from the wide belt to achieve primary material leveling. At the unloading point of the wide belt, the roller distributor 2 is set above the roller distributor 2, and the distance from the roller distributor 2 is reasonably set, so that most of the pellets coming down from the wide belt fall to the roller distributor 2. When thick materials appear locally on the wide belt, they will be caught by the primary material leveling component 3 when they fall, and fall on the primary material leveling component 3, and then gradually disperse and roll down through the conical material distribution structure above, and finally fall in the middle of the roller distributor 2, so as to achieve preliminary material leveling.

[0035] The main form of the primary flat material assembly 3 is: the width is the same as the wide belt, and the length is designed to be 1 / 3 to 1 / 2 of the length of the roller distributor 2 according to the actual working conditions, such as Figure 1 , two As shown, the surface of the primary flat material component 3 is arranged with staggered conical material distribution structures, so that the paths of the raw material balls are randomly changed and evenly distributed when they roll on it.

[0036] Material level meter group 4: N laser rangefinders are designed to measure the material thickness of the trolley. The value of N is set according to the width of the trolley. It is generally designed to be 4 to 7 units to complete the real-time measurement of the material thickness and then adjust the material thickness.

[0037] Main parameters of laser rangefinder: two-wire 4~20mA DC, response time less than 30ms.

[0038] Flat brush set 5: Figure 1 , three As shown, a flattening brush group 5 is designed to further flatten the pellets. The brush is made of fine stainless steel or other high temperature resistant materials with a certain toughness (preferably to be able to flexibly drive the pellets to move), and a flattening brush is set every 0.3 to 0.5 m.

[0039] Telescopic assembly: The flat material brush group 5 is equipped with a telescopic assembly and a brush frame. The length of the brush frame is designed to be the same as the width of the trolley. It is equipped with a telescopic connecting rod 504 and a telescopic motor 503. The telescopic motor 503 drives the brush frame to reciprocate, and the movement amplitude is greater than the distance between the two brushes, that is, the telescopic motor 503 drives the brush frame and the flat material brush to reciprocate to achieve flat material.

[0040] The lifting assembly 501 ensures that the array maintains a suitable distance from the material surface, and prevents the flat material brush set 5 from diving too deep into the material layer, resulting in a wavy structure on the material surface.

[0041] The PLC control system completes the interlocking control of the system. The system control mainly realizes: one is to process the material level signal of the material level meter group 4, control the action of the lifting component 501 to adjust the appropriate distance between the flat material brush group 5 and the material surface; the other is to control the telescopic component to achieve reciprocating motion to achieve the flat material action.

[0042] Example 2

[0043] A pellet uniform distribution device comprises a wide belt conveyor 1, a roller distributor 2, and a primary material leveling component 3; the primary material leveling component 3 is arranged between the wide belt conveyor 1 and the roller distributor 2 for changing the position and direction of thicker pellets dropped from the wide belt in the wide belt conveyor 1; the end of the roller distributor 2 is arranged above a trolley 6, and a material level meter group 4 for measuring the thickness of the material on the trolley 6 and a material leveling brush group 5 for leveling the material are also arranged above the trolley 6.

[0044] The primary flat material assembly 3 is arranged at the unloading position of the wide belt and is arranged above the roller distributor 2.

[0045] The width of the primary flat material component 3 is the same as the width of the wide belt of the wide belt conveyor 1 , and the length of the primary flat material component 3 is 1 / 3 to 1 / 2 of the length of the roller distributor 2 .

[0046] A plurality of staggered conical material distribution structures are arranged on the surface of the primary flat material component 3, and the contact surface between the conical bottom and the material is a smooth processing surface.

[0047] The material level meter group 4 includes several laser distance meters arranged in parallel, which are fixed on the top of the trolley and the end of the roller distributor 2 through the material level meter fixing bracket; the specific number of laser distance meters can be determined according to the actual width of the trolley 6, preferably 4-7, so as to complete the real-time measurement of the material thickness and then adjust the material thickness.

[0048] The flat material brush set 5 is integrally arranged above the trolley 6 through a fixing frame.

[0049] The flat material brush group 5 includes a telescopic component, a distance measuring component, a lifting component 501, a brush material component, and a guide component; the telescopic component is fixed on a fixed frame, the front end output end of the telescopic component is connected to the brush material component, a distance measuring component is arranged between the brush material component and the telescopic component, and the brush material component realizes up and down, front and back guiding displacement through the lifting component and the guide component.

[0050] The telescopic assembly includes a telescopic motor 503 and a telescopic connecting rod 504; the output end of the telescopic motor 503 is connected to the telescopic connecting rod 504, and the front end of the telescopic connecting rod 504 is connected to one end of the brush assembly.

[0051] The distance measuring assembly is arranged above the telescopic connecting rod 504 through a fixing plate. The distance measuring assembly includes a far limit proximity switch 505, a middle position proximity switch 506, and a near limit proximity switch 507.

[0052] The brush assembly comprises a brush frame, on which a plurality of flat brushes are arranged, and the flat brushes are preferably made of fine stainless steel material. The distance between every two adjacent flat brushes is 0.3-0.5m.

[0053] The length of the brush frame is the same as the width of the trolley 6.

[0054] A guide assembly is arranged on the side of the fixed frame, the guide assembly includes a guide groove, and a plurality of rollers 502 are arranged on both sides of the bottom of the brush frame, and the guide groove is arranged on the fixed frame. The rollers 502 move in the guide groove.

[0055] A lifting assembly 501 is provided at the bottom of the fixing frame, and the lifting assembly 501 includes a lifting cylinder, and the front end of the cylinder rod of the lifting cylinder is connected to the bottom surface of the fixing frame. The lifting cylinder is connected to the bottom surface of the fixing frame through a cylinder fixing frame. A guide column is provided between the cylinder fixing frame and the bottom surface of the fixing frame for guiding stability.

[0056] The device is also equipped with a control cabinet, which includes a PLC control system. The wide belt conveyor 1, roller distributor 2, level meter group 4, lifting cylinder, trolley 6, telescopic motor 503, far limit proximity switch 505, middle position proximity switch 506, and near limit proximity switch 507 are respectively connected to the PLC control system, and are not limited to a specific model, as long as their working functions are realized.

[0057] The above-described embodiments are only preferred embodiments of the present invention, but not all feasible embodiments of the present invention. For those skilled in the art, any obvious changes made thereto without departing from the principles and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. A pelletizing uniform distribution device, characterized in that: The invention comprises a wide belt conveyor (1), a roller distributor (2), and a primary material leveling assembly (3); the primary material leveling assembly (3) is arranged between the wide belt conveyor (1) and the roller distributor (2) for changing the position and direction of thicker pellets dropped from the wide belt of the wide belt conveyor (1); the end of the roller distributor (2) is arranged above a trolley (6), and a material level meter group (4) for measuring the thickness of the material loaded on the trolley (6) and a material leveling brush group (5) for leveling the material are also arranged above the trolley (6).

2. A pellet uniform distribution device as claimed in claim 1, characterized in that: The secondary flat material assembly (3) is arranged at the unloading position of the wide belt and is arranged above the roller distributor (2).

3. A pellet uniform distribution device as claimed in claim 1, characterized in that: The width of the primary flat material component (3) is the same as the width of the wide belt of the wide belt conveyor (1), and the length of the primary flat material component (3) is 1 / 3 to 1 / 2 of the length of the roller distributor (2).

4. A pellet uniform distribution device as claimed in claim 1, characterized in that: A plurality of staggered conical material distribution structures are arranged on the surface of the primary flat material component (3), and the contact surface between the conical bottom and the material is a smooth surface.

5. A pellet uniform distribution device as claimed in claim 1, characterized in that: The material level meter group (4) comprises a plurality of laser distance meters arranged in parallel, and is fixed on the top of the trolley and at the end of the roller distributor (2) via a material level meter fixing bracket.

6. A pellet uniform distribution device as claimed in claim 1, characterized in that: The flat material brush set (5) is integrally arranged above the trolley (6) via a fixing frame.

7. A pellet uniform distribution device as claimed in claim 1, characterized in that: The flat material brush assembly (5) comprises a telescopic assembly, a distance measuring assembly, a lifting assembly (501), a brush assembly, and a guide assembly; the telescopic assembly is fixed on a fixed frame, the front output end of the telescopic assembly is connected to the brush assembly, a distance measuring assembly is arranged between the brush assembly and the telescopic assembly, and the brush assembly realizes upward, downward, forward, and backward guiding displacement through the lifting assembly and the guide assembly.

8. A pellet uniform distribution device as claimed in claim 7, characterized in that: The telescopic assembly comprises a telescopic motor (503) and a telescopic connecting rod (504); the output end of the telescopic motor (503) is connected to the telescopic connecting rod (504), and the front end of the telescopic connecting rod (504) is connected to one end of the brush assembly.

9. A pellet uniform distribution device as claimed in claim 7, characterized in that: The brush assembly comprises a brush frame, on which a plurality of flat brushes are arranged, a guide assembly is arranged on the side of a fixed frame, the guide assembly comprises a guide groove, a plurality of rollers (502) are arranged on both sides of the bottom of the brush frame, and the guide groove is arranged on the fixed frame; the rollers (502) move in the guide groove.

10. A pellet uniform distribution device as claimed in claim 7, characterized in that: A lifting assembly (501) is arranged at the bottom of the fixing frame. The lifting assembly (501) comprises a lifting cylinder. The front end of a cylinder rod of the lifting cylinder is connected to the bottom surface of the fixing frame.

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