Anti-blocking device for feed opening of sintering belt of blast furnace

Abstract

The utility model discloses a blast furnace sintering belt feed opening anti-blocking device which comprises a feed hopper, the feed hopper comprises an equal-diameter section and a reducing section, a supporting plate is fixed to the lower portion of the equal-diameter section, an upper-layer conical head is arranged above the supporting plate, a fixed wheel seat is fixedly installed on the supporting plate, and a fixed shaft is rotatably installed on the fixed wheel seat. An eccentric wheel and a driven bevel gear are fixedly mounted on the fixed shaft, a mounting frame is fixed in the upper-layer conical head, a rotary power source and a roller assembly are mounted on the mounting frame, the roller assembly is in rolling connection with the eccentric wheel, a rotary sleeve is rotationally mounted on the supporting plate, a driving bevel gear is mounted on the rotary sleeve, and the driving bevel gear is in meshed connection with the driven bevel gear; and a lower-layer conical head is fixed at the lower end of the spline shaft. The upper-layer conical head ascends and descends to dredge blocked materials in the equal-diameter section, the lower-layer conical head ascends and descends while rotating to dredge blocked materials in the reducing section, and the dredging effect on the blocked materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical sintering, in particular to a device for preventing a blast furnace sintering belt feed port from being blocked. Background Art

[0002] The blockage of the sintering belt feeding port of the blast furnace will affect the operation of the entire feeding system. Traditionally, manual squatting is adopted. When the blockage is found, manual operation is performed to turn over the accumulated materials. The manual operation method has the disadvantages of low efficiency and high labor intensity, and there are certain safety risks.

[0003] The patent application number CN202022838069.5 discloses an automatic shutdown device for blocking the feeding port of sintered finished products, which includes a silo, a proximity switch, a conical head and a cylinder; the side wall of the silo is provided with an opening, and a silo door is provided on the opening; the proximity switch is located at the outer end of the silo door; the conical head is located inside the silo, and the lower end of the conical head is connected to the output end of the cylinder. After the material is accumulated in the silo, the cylinder pushes the conical head up and down to loosen the accumulated material.

[0004] The conical head of the above-mentioned device is arranged at the lower end of the upper half of the silo, and is pushed up and down by the cylinder. However, when the discharge port at the lower part of the silo is blocked, the conical head cannot lift the blocked material at the discharge port at the lower part of the silo downward, and can only press down the blocked material at the discharge port at the lower part when the conical head descends. Since the lower part of the silo is a gradually narrowing structure, the blocked material is easily compacted, which makes it difficult for the cylinder to push the conical head downward, and the blocked material at the discharge port at the lower part of the silo cannot be efficiently cleared. In addition, the cylinder of the above-mentioned device is fixed to the lower part of the silo through a support rod, and the support rod is located in the narrowing section at the lower part of the silo. The cross-sectional area at this position is small, and the setting of the support rod will further reduce the material flow at this position, which is easy to cause material blockage; and the lower end of the conical head is close to the support rod. When the cylinder pushes the conical head downward, the material will be pressed on the support rod, which is easy to cause the support rod to bend or break. Utility Model Content

[0005] Based on this, it is necessary to provide a blast furnace sintering belt unloading port anti-blocking device to address the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a blast furnace sintering belt unloading port anti-blocking device, including a lower hopper, the lower hopper includes an equal diameter section located at its upper part and a reduced diameter section located at its lower part, the lower end of the equal diameter section is adjacent to the top of the reduced diameter section, the lower part of the equal diameter section is fixed with a support plate, an upper cone head is arranged above the support plate, at least two fixed wheel seats are fixedly installed on the support plate, a fixed shaft is rotatably installed on the fixed wheel seat, an eccentric wheel and a driven bevel gear are fixedly installed on the fixed shaft, a mounting frame is fixed in the upper cone head, a rotating power source and a roller assembly corresponding to the fixed wheel seat are installed on the mounting frame, the roller assembly is rollingly connected with the eccentric wheel, a rotating sleeve is rotatably installed on the supporting plate, an active bevel gear is installed on the rotating sleeve, the active bevel gear is meshed with the driven bevel gear, a spline shaft is inserted in the rotating sleeve, the spline shaft is key-connected with the rotating sleeve, the upper end of the spline shaft is rotatably installed on the mounting frame, a lower cone head is fixed at the lower end of the spline shaft, the lower cone head is located in the reduced diameter section, and the rotating power source drives the spline shaft to rotate.

[0007] Preferably, at least two guide components are installed between the support plate and the upper cone head, and the guide components include a guide rod, a fixed plate, a guide sleeve, and a spring. The guide rod is fixed on the support plate, and a fixed plate is fixed inside the upper cone head. The guide sleeve is installed on the fixed plate, and the guide sleeve is sleeved on the guide rod and slidably connected to the guide rod. The guide rod is sleeved with a spring, and the upper end of the spring is connected to the fixed plate, and the lower end of the spring is connected to the support plate.

[0008] Preferably, the upper cone head includes a conical section located at the upper part and a cylindrical section located at the lower part, and the bottom end of the conical section is adjacent to the top end of the cylindrical section; a protective ring is fixed on the support plate, the protective ring is coaxially arranged with the upper cone head, and the inner wall of the protective ring is slidably connected with the outer wall of the cylindrical section.

[0009] Preferably, guide plates are fixed on the support plate and on both sides of the protective ring, one end of the guide plate is connected to the protective ring, and the other end of the guide plate is connected to the inner wall of the equal diameter section, and the cross-section of the guide plate is triangular.

[0010] Preferably, the roller assembly comprises a roller seat, a movable roller and a roller shaft, the roller seat is fixedly mounted on the mounting frame, the roller shaft is rotatably mounted on the roller seat, and the movable roller is fixedly mounted on the roller shaft; the movable roller is rollingly connected to the eccentric wheel.

[0011] Preferably, a reinforcing rib is fixed between the mounting frame and the upper cone head.

[0012] Preferably, a detection port is opened on the equal-diameter section, a detection door is hinged on the outer wall of the equal-diameter section, the detection door closes the detection port, the upper end of the detection door is hinged to the outer wall of the equal-diameter section, a detection frame is fixed on the outer wall of the equal-diameter section, a pressure sensor is installed on the detection frame, and the detection end of the pressure sensor is connected to the detection door.

[0013] Compared with the prior art, this technical solution has at least one of the following beneficial effects:

[0014] The upper and lower cone heads are driven up and down by a rotating power source. The upper cone head dredges the blocked materials in the equal diameter section, and the lower cone head dredges the blocked materials in the reduced diameter section. The lower cone head can fully drive the blocked materials to move while rising and falling, thereby improving the dredging effect of the blocked materials.

[0015] The support plate is fixed on the equal-diameter section with a larger cross-sectional area rather than on the reduced-diameter section with a smaller cross-sectional area, which can reduce the impact on material discharge; the lifting and lowering of the upper cone head will not press the material on the support plate, which can avoid damage to the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model (the upper cone head is located at the top dead center);

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram of the cone head in the middle and upper layers;

[0018] Figure 3 for Figure 2 Another state diagram (the upper cone head is at the bottom dead center);

[0019] Figure 4 A top view of an embodiment of the utility model;

[0020] Figure 5 It is a side view of the rolling connection between the eccentric wheel and the movable roller;

[0021] In the figure, 1, lower hopper; 2, equal diameter section; 3, reduced diameter section; 4, support plate; 5, upper cone head; 6, fixed wheel seat; 7, fixed shaft; 8, eccentric wheel; 9, driven bevel gear; 10, mounting frame; 11, rotating power source; 12, roller assembly; 13, rotating sleeve; 14, active bevel gear; 15, spline shaft; 16, lower cone head; 17, guide rod; 18, fixed plate; 19, guide sleeve; 20, spring; 21, cone section; 22, cylindrical section; 23, protective ring; 24, guide plate; 25, roller seat; 26, movable roller; 27, roller shaft; 28, reinforcing ribs; 29, detection port; 30, detection door; 31, detection frame; 32, pressure sensor. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] See also Figures 1 to 5 The embodiment of the present application provides a device for preventing the unloading port of a blast furnace sintering belt, comprising a unloading hopper 1, wherein the unloading hopper 1 comprises a constant diameter section 2 located at the upper part thereof and a reduced diameter section 3 located at the lower part thereof, wherein the inner diameters of the constant diameter section 2 at each height position are the same, and the inner diameter of the reduced diameter section 3 gradually decreases from top to bottom, and the bottom end of the constant diameter section 2 is adjacent to the top end of the reduced diameter section 3, and the cross-sections of the constant diameter section 2 and the reduced diameter section 3 are rectangular or circular; a support plate 4 is fixed at the lower part of the constant diameter section 2, and the support plate 4 is fixed on the constant diameter section 2 with a larger cross-sectional area rather than on the reduced diameter section 3 with a smaller cross-sectional area, It can reduce the impact on material unloading; an upper cone head 5 is provided above the support plate 4, two fixed wheel seats 6 are fixedly installed on the support plate 4, a fixed shaft 7 is rotatably installed on the fixed wheel seat 6 through a bearing, an eccentric wheel 8 and a driven bevel gear 9 are fixedly installed on the fixed shaft 7, a mounting frame 10 is fixed inside the upper cone head 5, a rotating power source 11 and a roller assembly 12 corresponding to the fixed wheel seat 6 are installed on the mounting frame 10, the rotating power source 11 is set as a reduction motor, and the wiring of the rotating power source 11 can be threaded by opening a through hole inside the support plate 4 , which is convenient for the rotary power source 11 to be connected to the power source outside the lower hopper 1, while avoiding the contact between the wiring and the material; the roller assembly 12 is rollingly connected with the eccentric wheel 8, and the roller assembly 12 includes a roller seat 25, a movable roller 26 and a roller shaft 27. The roller seat 25 is fixedly mounted on the mounting frame 10, and the roller shaft 27 is rotatably mounted on the roller seat 25 through a bearing, and the movable roller 26 is fixedly mounted on the roller shaft 27; the movable roller 26 is rollingly connected with the eccentric wheel 8; a rotating sleeve 13 is rotatably mounted on the support plate 4 through a bearing, and an active bevel gear is mounted on the rotating sleeve 13 Wheel 14, the active bevel gear 14 is meshed and connected with the driven bevel gear 9, a spline shaft 15 is inserted in the rotating sleeve 13, the spline shaft 15 is key-connected with the rotating sleeve 13, and the upper end of the spline shaft 15 is rotatably mounted on the mounting frame 10 through a tapered roller bearing that can withstand axial force, so that when the mounting frame 10 drives the spline shaft 15 to rise and fall, the spline shaft 15 can always drive the rotating sleeve 13 to rotate through the key connection with the rotating sleeve 13; a lower cone head 16 is fixed to the lower end of the spline shaft 15, and the lower cone head 16 is located in the reduced diameter section 3, and the rotating power source 11 drives the spline shaft 15 to rotate.

[0024] In this embodiment, the spline shaft 15 is driven to rotate by the rotating power source 11, and the spline shaft 15 drives the rotating sleeve 13 to rotate. The rotating sleeve 13 drives the driven bevel gear 9, the fixed shaft 7 and the eccentric wheel 8 to rotate through the active bevel gear 14. After the eccentric wheel 8 rotates, it drives the roller assembly 12 to move up and down, and then drives the mounting frame 10 and the upper cone head 5 to move up and down; on the one hand, the upper cone head 5 dredges the materials blocked in the equal diameter section 2; on the other hand, the mounting frame 10 drives the spline shaft 15 and the lower cone head 16 to move up and down, and at the same time, the spline shaft 15 drives the lower cone head 16 to rotate. The lower cone head 16 is located on the inner side of the lower part of the reduced diameter section 3. The lower cone head 16 dredges the blocked materials in the reduced diameter section 3. The outer wall of the lower cone head 16 has anti-slip grooves. The lower cone head 16 can fully drive the movement of the blocked materials while rising and falling and rotating, thereby improving the dredging effect of the blocked materials.

[0025] It is worth noting that although the active bevel gear 14 drives the two driven bevel gears 9 to rotate in opposite directions, since the eccentric wheel 8 is an axially symmetrical structure, when the two eccentric wheels 8 rotate in opposite directions, the top height of the eccentric wheel 8 is always the same, thereby driving the mounting frame 10 to move up and down smoothly.

[0026] In a preferred embodiment, in order to prevent the upper cone head 5 from rotating and to ensure that the eccentric wheel 8 can maintain rolling connection with the roller assembly 12, please refer to Figures 1 to 3 At least two guide components are installed between the support plate 4 and the upper cone head 5, and the guide components include a guide rod 17, a fixed plate 18, a guide sleeve 19, and a spring 20. The support plate 4 is fixed with a guide rod 17, and the upper cone head 5 is fixed with a fixed plate 18. The fixed plate 18 is installed with a guide sleeve 19, and the guide sleeve 19 is sleeved on the guide rod 17 and is slidably connected with the guide rod 17. The guide rod 17 is sleeved with a spring 20, and the upper end of the spring 20 is connected to the fixed plate 18, and the lower end of the spring 20 is connected to the support plate 4. The fixed plate 18, the guide rod 17, and the guide sleeve 19 guide the upper cone head 5 to prevent the upper cone head 5 from rotating, so that the upper cone head 5 can only move up and down, and avoid the wiring of the rotating power source 11 from being entangled. When the eccentric wheel 8 drives the roller assembly 12 to rise, the spring 20 extends. After the eccentric wheel 8 drives the roller assembly 12 to rise to the highest point, under the action of the elastic restoring force of the spring 20, the spring 20 can drive the fixing plate 18, the upper cone head 5, the mounting frame 10, and the roller assembly 12 to descend, so that the eccentric wheel 8 can maintain contact with the roller assembly 12.

[0027] In a preferred embodiment, in order to prevent the material from entering the upper cone head 5, please refer to Figures 1 to 3The upper cone head 5 includes a cone section 21 located at the upper part thereof and a cylinder section 22 located at the lower part thereof, and the bottom end of the cone section 21 is adjacent to the top end of the cylinder section 22; a protective ring 23 is fixed on the support plate 4, and the protective ring 23 is coaxially arranged with the upper cone head 5, and the inner wall of the protective ring 23 is slidably connected with the outer wall of the cylinder section 22. By providing the protective ring 23, it is possible to prevent materials from entering the upper cone head 5 laterally and affecting the normal operation of the components inside the upper cone head 5.

[0028] To prevent material from accumulating on the support plate 4, refer to Figures 1 to 3 , a guide plate 24 is arranged on the support plate 4 and fixed on both sides of the protection ring 23, one end of the guide plate 24 is connected to the protection ring 23, and the other end of the guide plate 24 is connected to the inner wall of the equal diameter section 2, and the cross section of the guide plate 24 is triangular. By setting the guide plate 24 with a triangular cross section, the material will slide down on the guide plate 24 and will not accumulate on the guide plate 24, thereby preventing the material from accumulating on the support plate 4,

[0029] In a preferred embodiment, in order to improve the connection stability between the mounting frame 10 and the upper cone head 5, please refer to Figures 1 to 3 A reinforcing rib 28 is fixed between the mounting frame 10 and the upper cone head 5. Two reinforcing ribs 28 are provided. The reinforcing ribs 28 are located on both sides of the rotating power source 11. In other embodiments, more than two reinforcing ribs may also be provided.

[0030] In a preferred embodiment, to facilitate the detection of whether the material is blocked, refer to Figure 1A detection port 29 is provided on the equal-diameter section 2, and a detection door 30 is hinged on the outer wall of the equal-diameter section 2. Specifically, two fixed plates are fixed on the outer wall of the equal-diameter section 2, a rotating shaft is fixed on the upper end of the detection door 30, and the rotating shaft is rotatably connected to the fixed plate to realize the hinge connection between the upper end of the detection door 30 and the outer wall of the equal-diameter section 2; the detection door 30 closes the detection port 29, and the upper end of the detection door 30 is hinged to the outer wall of the equal-diameter section 2, and a detection frame 31 is fixed on the outer wall of the equal-diameter section 2, a pressure sensor 32 is installed on the detection frame 31, and the detection end of the pressure sensor 32 is connected to the detection door 30. When the material is blocked at the detection port 29, the detection gate 30 will be continuously squeezed, so that the pressure sensor 32 can continuously detect a signal of a relatively large pressure. The present embodiment is also provided with a controller, which is not shown. The controller is connected to the pressure sensor 32 and the rotary power source 11. The controller is provided with a control program. When the pressure value and duration detected by the pressure sensor 32 reach the threshold value, it is judged that the material is blocked, and then the conveying equipment for conveying the material to the lower hopper 1 is controlled to stop working, and the rotary power source 11 is controlled to work, driving the upper cone head 5 and the lower cone head 16 to work, so as to clear the material. When the material is discharged normally, even if the material contacts the detection gate 30, the contact is of a relatively short duration, and the squeezing force between the material and the detection gate 30 is also relatively small. The pressure sensor 32 will detect discontinuous pressure, that is, when the material is discharged normally, the pressure signal detected by the pressure sensor 32 is different from the pressure signal when the material is blocked. The controller can judge whether there is a material blockage according to the detection signal of the pressure sensor 32.

[0031] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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.

Claims

1. A device for preventing the unloading port of a blast furnace sintering belt, comprising a unloading hopper (1), wherein the unloading hopper (1) comprises a constant diameter section (2) located at the upper part thereof and a reduced diameter section (3) located at the lower part thereof, wherein the bottom end of the constant diameter section (2) is adjacent to the top end of the reduced diameter section (3), and wherein: A support plate (4) is fixed at the lower part of the equal diameter section (2), an upper cone head (5) is provided above the support plate (4), at least two fixed wheel seats (6) are fixedly mounted on the support plate (4), a fixed shaft (7) is rotatably mounted on the fixed wheel seat (6), an eccentric wheel (8) and a driven bevel gear (9) are fixedly mounted on the fixed shaft (7), a mounting frame (10) is fixed inside the upper cone head (5), a rotating power source (11) and roller assemblies (12) corresponding to the fixed wheel seats (6) are mounted on the mounting frame (10), and the roller assemblies (12) and the eccentric wheel (8) are rolled in a manner such that the rotation of the roller assembly (12) and the rotation of the roller assembly (12) are rotatably mounted on the fixed wheel seat (6). A rotating sleeve (13) is rotatably mounted on the support plate (4), a driving bevel gear (14) is mounted on the rotating sleeve (13), the driving bevel gear (14) is meshedly connected with the driven bevel gear (9), a spline shaft (15) is inserted into the rotating sleeve (13), the spline shaft (15) is key-connected with the rotating sleeve (13), the upper end of the spline shaft (15) is rotatably mounted on the mounting frame (10), a lower cone head (16) is fixed at the lower end of the spline shaft (15), and the lower cone head (16) is located in the reduced diameter section (3), and a rotating power source (11) drives the spline shaft (15) to rotate.

2. The blast furnace sintering belt unloading port anti-blocking device according to claim 1, characterized in that: At least two guide assemblies are installed between the support plate (4) and the upper cone head (5), and the guide assemblies include a guide rod (17), a fixing plate (18), a guide sleeve (19), and a spring (20). The support plate (4) is fixed with the guide rod (17), the upper cone head (5) is fixed with the fixing plate (18), the fixing plate (18) is installed with the guide sleeve (19), the guide sleeve (19) is sleeved on the guide rod (17) and is slidably connected to the guide rod (17), the guide rod (17) is sleeved with the spring (20), the upper end of the spring (20) is connected to the fixing plate (18), and the lower end of the spring (20) is connected to the support plate (4).

3. The anti-blocking device for the blast furnace sintering belt feeding port according to claim 1, characterized in that: The upper cone head (5) comprises a cone section (21) located at its upper part and a cylinder section (22) located at its lower part, the bottom end of the cone section (21) adjoining the top end of the cylinder section (22); a protective ring (23) is fixed on the support plate (4), the protective ring (23) is coaxially arranged with the upper cone head (5), and the inner wall of the protective ring (23) is slidably connected with the outer wall of the cylinder section (22).

4. The anti-blocking device for the blast furnace sintering belt feed port according to claim 3, characterized in that: A guide plate (24) is fixed on the support plate (4) and located on both sides of the protection ring (23); one end of the guide plate (24) is connected to the protection ring (23), and the other end of the guide plate (24) is connected to the inner wall of the equal-diameter section (2); the cross section of the guide plate (24) is triangular.

5. The anti-blocking device for the blast furnace sintering belt feeding port according to claim 1, characterized in that: The roller assembly (12) comprises a roller seat (25), a movable roller (26) and a roller shaft (27); the roller seat (25) is fixedly mounted on the mounting frame (10); the roller shaft (27) is rotatably mounted on the roller seat (25); and the movable roller (26) is fixedly mounted on the roller shaft (27); and the movable roller (26) is rollingly connected to the eccentric wheel (8).

6. The anti-blocking device for the blast furnace sintering belt discharge port according to claim 1, characterized in that: A reinforcing rib plate (28) is fixed between the mounting frame (10) and the upper cone head (5).

7. The anti-blocking device for the blast furnace sintering belt discharge port according to any one of claims 1 to 6, characterized in that: The equal-diameter section (2) is provided with a detection opening (29), the outer wall of the equal-diameter section (2) is hinged with a detection door (30), the detection door (30) closes the detection opening (29), the upper end of the detection door (30) is hinged with the outer wall of the equal-diameter section (2), a detection frame (31) is fixed to the outer wall of the equal-diameter section (2), a pressure sensor (32) is installed on the detection frame (31), and the detection end of the pressure sensor (32) is connected to the detection door (30).

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