Mixture feeding device of sintering machine

Abstract

The utility model belongs to the technical field of sintering machine feeding, and particularly relates to a mixture feeding device of a sintering machine. The technology comprises a vertically arranged hopper, a discharge port for discharging materials in the hopper is formed in one side of the lower end of the hopper, a hopper gate for adjusting the size of the discharge port is arranged on the outer side of the hopper corresponding to the discharge port, and the hopper gate is in sliding fit with the hopper. And a pushing assembly for driving the hopper gate to move is arranged in the sliding stroke direction between the hopper and the hopper gate. The design is simple in structure, low in construction and implementation cost and convenient in later maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of sintering machine feeding, in particular to a mixed material feeding device for a sintering machine. Background Art

[0002] The feeding device of the sintering machine needs to mix various mineral powders in a certain proportion evenly, and then distribute the mixed materials to the sintering surface of the trolley according to the process requirements. During the sintering process of the sintering machine, the strength and particle size of the sintered ore are improved, the blast furnace utilization coefficient is improved, the coke ratio is reduced, and the air intake of the blast furnace is increased, which can make the materials in the blast furnace fully burned.

[0003] When the sintering machine is distributing materials, it is required that the particle size, chemical composition and moisture content of the mixture are evenly distributed along the width of the trolley, and the mixture should have uniform air permeability. In addition, the surface of the mixture distributed on the trolley should be flat and loose to prevent accumulation and compression. At the same time, the most ideal height distribution of the mixture layer should make the particle size of the mixture coarser from top to bottom, and the carbon content gradually decreases. Such a distribution is conducive to the use of heat and to improving the air permeability of the mixture layer.

[0004] like Fig. 9 and Fig.10 As shown in the figure, the traditional sintering machine feeding gate needs to use the main gate to roughly adjust the mixed material feeding amount, and then use the auxiliary gate to fine-tune the mixed material feeding amount. This adjustment method has many shortcomings. First, the overall structure is complex, and the construction cost and maintenance cost are high. Secondly, the two ends of the main gate are driven by two electric cylinders or hydraulic cylinders. The opening and closing of the main gate requires the synchronous drive of two cylinders, which is difficult. The two cylinders are prone to uneven force on both sides of the feed machine gate, unstable structure, and even deformation and damage of the feed gate, increasing the difficulty of later maintenance.

[0005] In response to the above problems, the applicant has found the following technical solutions:

[0006] A precise material distribution device for a sintering machine (patent announcement number CN201688703U) eliminates the design of the main gate, but the auxiliary gate is controlled by a hydraulic connecting rod mechanism, which has a relatively complex structure, and uses a hydraulic mechanism to control the opening and closing of the auxiliary gate, resulting in low control accuracy. The use of a hydraulic mechanism to control the auxiliary gate has a high development cost.

[0007] Sintering machine distribution gate (patent announcement number CN106996696A), this patent also adopts the design of main gate and auxiliary gate. When the main gate is opened, multiple discharge ports controlled by auxiliary gates are formed to fine-tune the discharge amount. The main gate makes a rough adjustment to the discharge amount, and the auxiliary gate makes a fine adjustment. Different gates are controlled by multiple different hydraulic cylinders. The patent has a complex structural design, high cost, and difficulty in later maintenance.

[0008] A sintering machine material distribution gate (patent announcement number CN211668266U), which controls the falling speed of materials by designing a two-stage material distribution box, and finally distributes the materials through a rotating discharge gate. This design cannot adjust the material distribution speed at different positions in the lateral direction of the trolley, which may cause an uneven material distribution surface, and the device structure is relatively complex, the implementation cost is high, and the subsequent maintenance is relatively difficult. Utility Model Content

[0009] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a mixed material feeding device for a sintering machine, which has a simple structure, low construction cost and convenient later maintenance.

[0010] The sintering machine mixed material feeding device comprises a vertically arranged hopper, a discharge port for discharging the material in the hopper is provided on one side of the lower end of the hopper, a hopper gate for adjusting the size of the discharge port is provided on the outside of the hopper corresponding to the discharge port, the hopper gate is in sliding cooperation with the hopper, and a pushing component for driving the hopper gate to move is provided in the sliding stroke direction between the hopper and the hopper gate.

[0011] Furthermore, a limiting bracket is arranged outside the hopper gate, the hopper gate is arranged between the hopper and the limiting bracket, and a gap is left between the hopper gate and the limiting bracket.

[0012] Furthermore, the gap between the hopper gate and the limiting bracket is less than or equal to 6 mm.

[0013] Furthermore, it also includes a control unit and a level meter for detecting the material level on the sintering trolley, the control unit is used to receive the material level signal of the level meter and control the pushing component to adjust the hopper gate according to the material level signal.

[0014] Furthermore, the hopper gate and the hopper are slidably matched up and down, and the pushing component is an electric push rod, the power end of the electric push rod is hinged on the hopper gate, and the installation end of the electric push rod is hinged on the hopper.

[0015] Furthermore, the hopper gate includes a slide plate, the slide plate is slidably matched with the hopper, and the power end of the electric push rod is hinged on the slide plate through a connecting plate.

[0016] Furthermore, there are several hopper gates, and all the hopper gates are arranged side by side and at intervals along the discharge port.

[0017] Furthermore, the spacing distance between two adjacent hopper gates is 5 mm to 8 mm.

[0018] Furthermore, the specific manner in which the slide plate and the hopper are slidably matched is as follows: two parallel slide grooves are arranged at intervals on the slide plate facing the hopper side, and a slide rail corresponding to the slide groove is installed on the hopper for slidably matching the slide groove.

[0019] Furthermore, the slide rail is made of wear-resistant material.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model cancels the original design of matching the main gate with the auxiliary gate, has a simple structure, occupies a small space, has a low construction cost, is easy to maintain in the later stage, and is also convenient for discharging large lumps (discharging large lumps is a common name in the industry. Under certain conditions, materials will clump. When the lumps are very large, they need to be removed). BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0025] Figure 3 This is a schematic diagram of the installation structure of the utility model;

[0026] Figure 4 for Figure 3 A schematic diagram of the structure of the utility model from the right side;

[0027] Figure 5 It is a schematic diagram of the structure after the material level meter is matched;

[0028] Figure 6 for Figure 4 A schematic diagram of the structure after removing the gate and the push assembly;

[0029] Figure 7 It is a schematic diagram of the structure of a single gate;

[0030] Figure 8 for Figure 7 A schematic diagram of a top view structure;

[0031] Fig. 9 It is a structural schematic diagram of a feeding device in the prior art;

[0032] Fig.10 for Fig. 9 Schematic diagram of the right view structure.

[0033] Figure numerals: 1. hopper; 2. pushing assembly; 3. hopper gate; 31. first gate; 32. second gate; 33. third gate; 34. fourth gate; 35. fifth gate; 36. sixth gate; 37. seventh gate; 38. eighth gate; 4. limit bracket; 5. round roller feeder; 6. sintering machine frame; 7. roller distributor; 8. material level meter; 9. sintering trolley; 10. slide rail; 11. connecting plate; 12. slide plate; 13. slide chute. DETAILED DESCRIPTION

[0034] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] Example

[0037] A sintering machine mixed material feeding device described in this embodiment is as follows: Figure 1 , Figure 2 As shown, the hopper 1 is vertically arranged, and a discharge port for discharging the material in the hopper 1 is provided on one side of the lower end of the hopper 1 (the discharge port in this embodiment is located on the right side of the hopper 1, that is, Figure 2 ), a hopper gate 3 for adjusting the size of the discharge port is provided on the outside of the hopper 1 corresponding to the discharge port, the hopper gate 3 is in sliding cooperation with the hopper 1, and a pushing component 2 for driving the hopper gate 3 to move is provided in the sliding stroke direction between the hopper 1 and the hopper gate 3.

[0038] When the hopper gate 3 and the hopper 1 are slidably matched, it is preferred that the hopper gate 3 and the hopper 1 are slidably matched in an up-and-down manner. Sliding matches in other directions may also be used as long as the purpose of adjusting the size of the discharge port can be achieved. The hopper gate 3 and the hopper 1 are slidably matched in an up-and-down manner to facilitate the control of the opening of the hopper gate 3. The hopper gate 3 can be lifted to a greater height (such as Figure 2 As shown, D in the figure is the opening, which can usually reach D≥300mm).

[0039] In order to prevent the material at the discharge port from squeezing the hopper gate 3 during operation, thereby causing the hopper gate 3 to swing outward, a limit bracket 4 is arranged on the outside of the hopper gate 3, and the hopper gate 3 is arranged between the hopper 1 and the limit bracket 4, and a gap (that is, Figure 2 When installing, Figure 3 As shown, the limiting bracket 4 is installed on the existing sintering machine frame 6, and the hopper 1 is installed above the round roller feeder 5.

[0040] The purpose of leaving a gap between the hopper gate 3 and the limit bracket 4 is to limit the swing of the hopper gate 3 and ensure the flexible sliding of the hopper gate 3. Preferably, the gap between the hopper gate 3 and the limit bracket 4 is less than or equal to 6 mm. When used, the size of the gap can be determined according to the coordination between the hopper gate 3 and the hopper 1, such as 6 mm, 5 mm, 4 mm, 3 mm or 1 mm.

[0041] The push assembly 2 is preferably an electric push rod, the power end of the electric push rod is hinged on the hopper gate 3, and the mounting end of the electric push rod is hinged on the hopper 1. When applied, other existing technologies such as cylinders and hydraulic cylinders can also be used. When an electric push rod is used, since the motor is used as an actuator to control the hopper gate 3, the control accuracy is higher and it is more reliable than hydraulic control of the hopper gate 3.

[0042] The above-mentioned electric push rod is an existing known technology, also known as a linear drive. Its structure is composed of a drive motor, a reduction gear, a screw, a nut, a guide sleeve, a push rod, a slide, a spring, a housing, a turbine, a micro-control switch and other tools. It can be considered as an extension of the structure of a rotating motor. The electric push rod is mainly a new type of linear actuator composed of a motor push rod and a control device and other mechanisms, which will not be described in detail here.

[0043] like Figure 7 , Figure 8 As shown, the hopper gate 3 includes a slide plate 12, and the slide plate 12 is in sliding cooperation with the hopper 1. When the slide plate 12 and the hopper 1 are slidably cooperated, it is preferred that two parallel chute grooves 13 are spaced apart on the slide plate 12 facing the side of the hopper 1, as shown in FIG. Figure 6 As shown, a slide rail 10 that slides with the slide groove 13 is installed on the hopper 1 corresponding to the slide groove 13. The slide rail 10 is made of wear-resistant material, such as NM400 wear-resistant steel, which can extend the service life of the hopper gate 3. Basically, the service life can reach more than one year. When replacing, the old hopper gate 3 is removed and directly replaced with a new hopper gate 3. If an electric push rod is used, the power end of the electric push rod is hinged on the slide plate 12 through the connecting plate 11. The sliding cooperation between the slide plate 12 and the hopper 1 can also be completed by other existing known sliding cooperation methods, such as a slide rail and a slider, and another example is a sliding sleeve and a slide rod.

[0044] like Figure 6 As shown, there are several hopper gates 3, all of which are arranged side by side and spaced apart along the discharge port. The distribution direction corresponds to the width direction of the sintering trolley 9 in the prior art. The spacing between two adjacent hopper gates 3 is 5mm to 8mm. In actual application, the spacing is determined according to the actual working conditions and can be 5mm, 6mm, 7mm or 8mm. Figure 4 As shown, eight hopper gates 3 are used, namely a first gate 31, a second gate 32, a third gate 33, a fourth gate 34, a fifth gate 35, a sixth gate 36, a seventh gate 37 and an eighth gate 38.

[0045] This embodiment further illustrates the technology, in order to achieve automatic control, such as Figure 5 As shown, the technology also includes a control unit and a level meter 8 for detecting the material level on the sintering trolley 9. The control unit is used to receive the material level signal of the level meter 8 and control the push component 2 to adjust the hopper gate 3 according to the material level signal. In this section, the level meter 8 uses radar as a material level detection. In actual use, other existing level meters 8 for detecting material levels can also be used. When applied, it is preferred that the number of level meters 8 matches the number of hopper gates 3. Under the design of this section of technology, the functions of automatically leveling the material and automatically adjusting the hopper gate 3 according to the set material level height can be realized. The control unit described in this section can use conventional control technology.

[0046] The following is a description of the specific working process in combination with the above overall technical solution:

[0047] like Figure 5 As shown, the mixed material is fed to the round roller feeder 5 through the hopper 1, and then the round roller feeder 5 rotates and feeds the material to the roller distributor 7, and finally the roller distributor 7 feeds the material to the sintering trolley 9. In this process, the position of the slide plate 12 is adjusted by the electric push rod to adjust the opening size of the discharge port. Since the hopper gates 3 are arranged side by side (their arrangement direction is also the width direction of the sintering trolley 9), the hopper gates 3 at different positions can control the feeding speed according to the requirements of the feeding speed at different positions. Usually, because the material discharge speed on both sides of the hopper 1 is slow, in order to ensure the flatness of the material on the sintering trolley, the hopper gates 3 on both sides can be opened a little wider during operation.

[0048] The above round roller feeder 5, roller distributor 7 and sintering trolley 9 are all prior art, and are only involved here for the convenience of describing the working of the material level meter 8. The following is further explained by taking an example:

[0049] For example, if the system sets a certain sintering machine speed and the material feeding height is 800mm, when the level meter 8 detects that the material thickness at a certain hopper gate 3 is too small, the level meter 8 transmits a data signal to the control unit, and the control unit controls the pushing component 2 to appropriately increase the opening of the hopper gate 3; conversely, when the level meter 8 detects that the material thickness at a certain hopper gate 3 is too large, the level meter 8 transmits a data signal to the control unit, and the control unit controls the pushing component 2 to appropriately reduce the opening of the gate until the set material level height is reached.

[0050] When the mixed material is partially compacted, it is necessary to remove the large pieces (removing large pieces is a common name in the industry. Under certain conditions, materials will clump. When the clumps are large, they need to be removed). At this time, the large pieces of material will be blocked at the discharge gate, resulting in poor discharge. If this happens, the level meter 8 detects that the material at a certain hopper gate 3 is low, and it does not improve by increasing the opening of the hopper gate 3 (such as the original opening of 30%, increased to 60%). At this time, it is judged that the large piece removal operation is needed, and the opening of the hopper gate 3 at that location needs to be adjusted to 100%, and it needs to be maintained for a period of time, such as 2 minutes. After the large pieces of material pass through, the hopper gate 3 at that location is adjusted back to normal.

[0051] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0052] 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 this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A mixed material feeding device for a sintering machine, comprising a vertically arranged hopper (1), a lower end of which is provided with a discharge port for discharging the material in the hopper (1), characterized in that: A hopper gate (3) for adjusting the size of the hopper gate is provided on the outside of the hopper (1) corresponding to the discharge port. The hopper gate (3) and the hopper (1) are in sliding cooperation. A pushing component (2) for driving the hopper gate (3) to move is provided in the direction of the sliding stroke between the hopper (1) and the hopper gate (3).

2. The mixed material feeding device for a sintering machine according to claim 1, characterized in that: A limiting bracket (4) is arranged outside the hopper gate (3); the hopper gate (3) is arranged between the hopper (1) and the limiting bracket (4); and a gap is left between the hopper gate (3) and the limiting bracket (4).

3. The mixed material feeding device for a sintering machine according to claim 2, characterized in that: The gap between the hopper gate (3) and the limiting bracket (4) is less than or equal to 6 mm.

4. The mixed material feeding device for a sintering machine according to claim 2, characterized in that: It also includes a control unit and a material level meter (8) for detecting the material level on the sintering trolley (9), the control unit being used to receive a material level signal from the material level meter (8) and to control the pushing component (2) to adjust the hopper gate (3) according to the material level signal.

5. The mixed material feeding device for a sintering machine according to claim 1, characterized in that: The hopper gate (3) and the hopper (1) are slidably matched up and down, and the pushing component (2) is an electric push rod, the power end of the electric push rod is hinged on the hopper gate (3), and the installation end of the electric push rod is hinged on the hopper (1).

6. The mixed material feeding device for a sintering machine according to claim 5, characterized in that: The hopper gate (3) comprises a slide plate (12), the slide plate (12) and the hopper (1) are in sliding cooperation, and the power end of the electric push rod is hinged on the slide plate (12) through a connecting plate (11).

7. The mixed material feeding device for a sintering machine according to claim 2, characterized in that: There are a plurality of hopper gates (3), and all of the hopper gates (3) are arranged side by side and spaced apart along the discharge port.

8. The mixed material feeding device for a sintering machine according to claim 7, characterized in that: The spacing distance between two adjacent hopper gates (3) is 5 mm to 8 mm.

9. The mixed material feeding device for a sintering machine according to claim 6, characterized in that: The specific manner in which the slide plate (12) and the hopper (1) are slidably matched is as follows: two parallel slide grooves (13) are arranged at intervals on the slide plate (12) facing the hopper (1), and a slide rail (10) slidably matched with the slide groove (13) is installed on the hopper (1) corresponding to the slide groove (13).

10. The mixed material feeding device for a sintering machine according to claim 9, characterized in that: The slide rail (10) is made of wear-resistant material.

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