Sintered ore belt head sampling device under blast furnace tank

Abstract

The utility model discloses a blast furnace under-tank sinter belt head sampling device, which comprises a rack positioned at the head of a sinter belt, a swing arm is rotatably mounted on the rack, a telescopic material intercepting mechanism is fixed at the other end of the swing arm, and the material intercepting mechanism comprises an outer arc-shaped guide plate, an inner arc-shaped guide plate and a first linear execution element; a guide hopper is fixed to the machine frame, a second linear execution element is hinged to the guide hopper, and the output end of the second linear execution element is hinged to the outer arc-shaped guide plate. Through cooperative work of the first linear execution element and the second linear execution element, the inner arc-shaped guide plate moves to the position intersecting with the parabolic discharging track of sintered ore output by the head of the sintered ore belt, the inner arc-shaped guide plate and the outer arc-shaped guide plate are matched to guide the sintered ore to the guide hopper, automatic sampling can be achieved, shutdown is not needed, and the sampling efficiency is improved. Sintered ore of the whole belt section is sampled, the sampling precision can be guaranteed, meanwhile, the sampling amount can be increased, and the sintered ore is prevented from being separated in the sampling process.

Description

Technical Field

[0001] The utility model relates to the technical field of sintered ore sampling, in particular to a sampling device for the head of a sintered ore belt under a blast furnace trough. Background Art

[0002] In the blast furnace ironmaking process, monitoring the quality and particle size composition of sintered ore is crucial to the blast furnace smelting process. The quality and particle size composition of sintered ore directly affect the smooth operation of the blast furnace and the consumption of raw materials and fuels. At present, most sintered ore sampling under the trough of blast furnaces is to stop the belt and take the cross-section sintered ore for powder analysis before entering the furnace. This method is time-consuming and labor-intensive, and affects the normal feeding of the blast furnace. It is easy to cause damage to the belt high-voltage motor and cause the blast furnace to be low-feeding line, resulting in equipment damage and fluctuations in the blast furnace condition, which seriously affects the production of the blast furnace and reduces the operation rate of the blast furnace.

[0003] The patent with announcement number CN104655447B discloses a sampling device for the head of the sintered ore belt under the trough of a blast furnace, including a hydraulic cylinder, an arc guide rail, a sampling hopper, a horizontal guide rail, a chute, a sample conveying hopper, etc. When sampling, the sampling hopper moves along the arc guide rail and the horizontal guide rail toward the head of the belt under the trough of the blast furnace under the push of the hydraulic cylinder. After taking the sample, the sampling hopper returns along the arc guide rail and the horizontal guide rail under the action of the hydraulic cylinder, forming an inclined state to pour the ore sample into the chute and then slide into the sample conveying hopper.

[0004] The sampling device of the above patent is limited by its sampling structure. The height of the sampling hopper is relatively low, the sampling volume is small, and when sampling, the sintered ore on the belt falls freely along a parabolic trajectory and has a certain gravitational potential energy. After the sintered ore falls into the sampling hopper, it is easy to bounce out of the sampling hopper. Utility Model Content

[0005] Based on this, it is necessary to provide a sampling device for the head of the sintered ore belt under the blast furnace trough to address the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a sampling device for the head of the sintered ore belt under the trough of a blast furnace, comprising a frame located at the head of the sintered ore belt, a swing arm rotatably mounted on the frame, a retractable material cutting mechanism fixed to the other end of the swing arm, the material cutting mechanism comprising an outer arc guide plate, an inner arc guide plate and a first linear actuator, the inner arc guide plate is located on the inner side of the outer arc guide plate and is slidably connected to the outer arc guide plate, one end of the first linear actuator is hinged to the outer arc guide plate, and the other end is hinged to the inner arc guide plate; a material guide hopper is fixedly mounted on the frame, the material guide hopper is located directly below the head of the sintered ore belt, a second linear actuator is hinged on the material guide hopper or the frame, and an output end of the second linear actuator is hinged to the outer arc guide plate; the inner arc guide plate can move to a position intersecting with the parabolic downward feeding trajectory of the sintered ore outputted from the head of the sintered ore belt, and guides the sintered ore to the material guide hopper by cooperating with the outer arc guide plate.

[0007] Preferably, the number of the swing arms is two, and the two swing arms are symmetrically arranged on both sides of the outer arc-shaped guide plate.

[0008] Preferably, the swing arm is rotatably connected to the frame via a bearing.

[0009] Preferably, the bearing is coaxially arranged with the roller at the head of the sintered ore belt.

[0010] Preferably, the bottom surfaces of the outer arc guide plate and the inner arc guide plate are both arc surfaces, and the centers of the bottom surfaces of the outer arc guide plate and the inner arc guide plate are both located on the axis of the fixed shaft.

[0011] Preferably, arc-shaped guide grooves are provided on the inner walls on both sides of the outer arc-shaped guide plate, and arc-shaped slide bars are fixed on the outer walls on both sides of the inner arc-shaped guide plate, and the arc-shaped slide bars are slidably connected to the arc-shaped guide grooves.

[0012] Preferably, when the output ends of the first linear actuator and the second linear actuator are both in the longest extended state, the inner arc guide plate is located at a position intersecting with the parabolic downward feeding trajectory of the sintered ore output from the head of the sintered ore belt, and the lower end of the outer arc guide plate is located obliquely above the guide hopper; when the output ends of the first linear actuator and the second linear actuator are both in the most contracted state, the inner arc guide plate is contracted to the inside of the outer arc guide plate, and the material cutting mechanism is located directly below the head of the sintered ore belt.

[0013] Beneficial effects of this technical solution:

[0014] The first linear actuator and the second linear actuator work in coordination, so that the inner arc guide plate moves to a position intersecting with the parabolic feeding track of the sintered ore outputted from the head of the sintered ore belt. The inner arc guide plate cooperates with the outer arc guide plate to guide the sintered ore to the guide hopper, so that automatic sampling can be realized without stopping the machine and causing material accumulation. The sampling is for the sintered ore of the entire belt section, so that the sampling accuracy can be guaranteed.

[0015] The inner arc guide plate can be retracted inside the outer arc guide plate, so that the cutting mechanism can be completely located directly below the head of the sinter belt when it is retracted, reducing the occupied space area and not contacting the sinter. The sinter belt can normally transport the sinter without affecting the normal operation of the sinter belt.

[0016] The material is guided by the outer arc guide plate and the inner arc guide plate, and there is no limit on the sampling amount, which can increase the sampling amount and avoid the situation of sintered ore separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a sampling device according to an embodiment (the output ends of the first linear actuator and the second linear actuator are both in the longest extended state);

[0018] Figure 2 for Figure 1 A front view of the sampling device in the state;

[0019] Figure 3 Schematic diagram of the structure of a sampling device according to an embodiment (the output ends of the second linear actuators are in the longest extended state, and the output ends of the first linear actuators are in the contracted state);

[0020] Figure 4 for Figure 3 A front view of the sampling device in the state;

[0021] Figure 5 It is a structural schematic diagram of a sampling device according to an embodiment (the output ends of the first linear actuator and the second linear actuator are both in the most contracted state);

[0022] Figure 6 A partial cross-sectional side view of a sampling device according to an embodiment;

[0023] In the figure, 1, sintering belt head; 2, frame; 3, swing arm; 4, material cutting mechanism; 41, outer arc guide plate; 411, arc guide groove; 42, inner arc guide plate; 421, arc slide; 43, first linear actuator; 5, guide hopper; 6, second linear actuator; 7, bearing; 8, roller. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figures 1 to 6 The embodiment of the present application provides a sampling device for the head of the sintered ore belt under the trough of a blast furnace, comprising a frame 2 located at the head 1 of the sintered ore belt, a swing arm 3 is rotatably mounted on the frame 2, and a retractable material cutting mechanism 4 is fixed at the other end of the swing arm 3; in order to improve the support stability of the material cutting mechanism 4, two swing arms 3 are provided, and the two swing arms 3 are symmetrically arranged on both sides of the outer arc guide plate 41; the swing arm 3 is rotatably connected to the frame 2 through a bearing 7, the outer ring of the bearing 7 is fixedly connected to the frame 2, and the inner ring of the bearing 7 is fixedly connected to the swing arm 3;

[0026] The material cutting mechanism 4 includes an outer arc guide plate 41, an inner arc guide plate 42 and a first linear actuator 43. In this embodiment, the first linear actuator 43 is a hydraulic cylinder. In other embodiments, it can also be an element capable of realizing linear motion, such as a cylinder or an electric cylinder. The inner arc guide plate 42 is located inside the outer arc guide plate 41 and is slidably connected to the outer arc guide plate 41. One end of the first linear actuator 43 is hinged to the outer arc guide plate 41, and the other end is hinged to the inner arc guide plate 42.

[0027] A guide hopper 5 is fixedly mounted on the frame 2, and the guide hopper 5 is located directly below the sintered ore belt head 1. A second linear actuator 6 is hinged on the guide hopper 5. In other embodiments, the second linear actuator 6 can also be hinged on the frame 2. In this embodiment, the second linear actuator 6 uses a hydraulic cylinder, and in other embodiments, it can also be a cylinder, an electric cylinder, or other elements capable of realizing linear motion. The output end of the second linear actuator 6 is hinged to the outer arc guide plate 41;

[0028] The inner arc guide plate 42 can move to a position intersecting with the parabolic downward feeding trajectory of the sintered ore outputted from the sintered ore belt head 1 , and guide the sintered ore to the guide hopper 5 by cooperating with the outer arc guide plate 41 . Specifically, when sampling is required, when the output ends of the first linear actuator 43 and the second linear actuator 6 are both in the longest extended state, the inner arc guide plate 42 is located at a position intersecting with the parabolic downward feeding trajectory of the sintered ore output by the sintered ore belt head 1, and the lower end of the outer arc guide plate 41 is located obliquely above the guide hopper 5. At this time, the inner arc guide plate 42 cooperates with the outer arc guide plate 41 to guide the sintered ore to the guide hopper 5; automatic sampling can be achieved without stopping the machine and without causing material accumulation; the sampling is for the sintered ore of the entire belt section, which can ensure the sampling accuracy; the material is guided by the outer arc guide plate 41 and the inner arc guide plate 42, and there is no limit on the sampling amount, which can increase the sampling amount. At the same time, the outer arc guide plate 41 and the inner arc guide plate 42 both have side plates, which can block the material and prevent the sintered ore from falling off.

[0029] When the output ends of the first linear actuator 43 and the second linear actuator 6 are both in the most contracted state, the inner arc guide plate 42 is contracted inside the outer arc guide plate 41, and the material cutting mechanism 4 is located directly below the sintered ore belt head 1. At this time, the material cutting mechanism 4 will not contact the sintered ore, and the sintered ore belt can transport the sintered ore normally without affecting the normal operation of the sintered ore belt.

[0030] In a preferred embodiment, in order to enable the material cutting mechanism 4 to rotate from the bottom of the sintering belt head 1 to the side of the sintering belt head 1, please refer to Figures 1 to 6 The bearing 7 is coaxially arranged with the roller 8 of the sintered ore belt head 1.

[0031] To facilitate the conveying of sintered ore to the guide hopper 5, please refer to Figures 1 to 5 The bottom surfaces of the outer arc guide plate 41 and the inner arc guide plate 42 are both arc surfaces, and the centers of the bottom surfaces of the outer arc guide plate 41 and the inner arc guide plate 42 are both located on the axis of the fixed shaft.

[0032] In a preferred embodiment, in order to facilitate the sliding connection between the inner arc guide plate 42 and the outer arc guide plate 41, please refer to Figure 1 and Figure 6 , an arc-shaped guide plate 41 is provided with an arc-shaped guide groove 411 on both inner walls of the two sides, see Figure 2 and Figure 6 Arc-shaped slide bars 421 are fixed on the outer walls on both sides of the inner arc-shaped guide plate 42 , and the arc-shaped slide bars 421 are slidably connected to the arc-shaped guide grooves 411 .

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 sampling device for the head of a sintered ore belt under a blast furnace trough, comprising a frame (2) located at the head of the sintered ore belt (1), characterized in that: The frame (2) is rotatably mounted with a swing arm (3), the other end of which is fixed with a retractable material cutting mechanism (4), the material cutting mechanism (4) comprising an outer arc guide plate (41), an inner arc guide plate (42) and a first linear actuator (43), the inner arc guide plate (42) being located inside the outer arc guide plate (41) and being slidably connected to the outer arc guide plate (41), one end of the first linear actuator (43) being hinged to the outer arc guide plate (41), and the other end being hinged to the inner arc guide plate (42); the frame ( 2) is fixedly mounted with a guide hopper (5), the guide hopper (5) is located directly below the head portion (1) of the sintered ore belt, a second linear actuator (6) is hingedly connected to the guide hopper (5) or the frame (2), and an output end of the second linear actuator (6) is hingedly connected to an outer arc-shaped guide plate (41); the inner arc-shaped guide plate (42) can move to a position intersecting with a parabolic downward feeding trajectory of the sintered ore outputted from the head portion (1) of the sintered ore belt, and guide the sintered ore to the guide hopper (5) by cooperating with the outer arc-shaped guide plate (41).

2. The sintered ore belt head sampling device under the blast furnace trough according to claim 1 is characterized in that: The number of the swing arms (3) is two, and the two swing arms (3) are symmetrically arranged on both sides of the outer arc-shaped guide plate (41).

3. The sintered ore belt head sampling device under the blast furnace trough according to claim 2 is characterized in that: The swing arm (3) is rotatably connected to the frame (2) via a bearing (7).

4. The sampling device for the head of the sintered ore belt under the blast furnace trough according to claim 3 is characterized in that: The bearing (7) is coaxially arranged with the roller (8) of the sintered ore belt head (1).

5. The sampling device for the head of the sintered ore belt under the blast furnace trough according to claim 4 is characterized in that: The bottom surfaces of the outer arc guide plate (41) and the inner arc guide plate (42) are both arc surfaces, and the centers of the bottom surfaces of the outer arc guide plate (41) and the inner arc guide plate (42) are both located on the axis of the fixed shaft.

6. The sampling device for the head of the sintered ore belt under the blast furnace trough according to claim 1, characterized in that: Arc-shaped guide grooves (411) are provided on the inner walls on both sides of the outer arc-shaped guide plate (41), and arc-shaped slide bars (421) are fixed on the outer walls on both sides of the inner arc-shaped guide plate (42), and the arc-shaped slide bars (421) are slidably connected to the arc-shaped guide grooves (411).

7. The sampling device for the head of the sintered ore belt under the blast furnace trough according to claim 1 is characterized in that: When the output ends of the first linear actuator (43) and the second linear actuator (6) are both in the most extended state, the inner arc guide plate (42) is located at a position intersecting with the parabolic downward feeding trajectory of the sintered ore outputted from the sintered ore belt head (1), and the lower end of the outer arc guide plate (41) is located obliquely above the guide hopper (5); when the output ends of the first linear actuator (43) and the second linear actuator (6) are both in the most retracted state, the inner arc guide plate (42) is retracted inside the outer arc guide plate (41), and the material cutting mechanism (4) is located directly below the sintered ore belt head (1).

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