Intermittent feeding device and material conveying system

Abstract

The present invention relates to the technical field of material conveying, and provides an intermittent feeding device and a material conveying system. The intermittent feeding device includes a material storage box, a feed port is provided on the top plate of the material storage box, and a discharge port is provided on the bottom plate; an impeller rotatable around its own central axis is provided inside the material storage box, including blades; during the rotation of the blades, at least within a set time period, there is a blade that gradually enters the area corresponding to the discharge port, so that there is no overlap between the positive projection of the part of the material feed port that is not blocked by the blade on the bottom plate and the part of the material discharge port that is not blocked by the blade. When the intermittent feeding device of the present invention is applied to a conveyor, the hoppers of the conveyor do not need to overlap with each other, and there is no need to set up a posture control system. Therefore, when this intermittent feeding device is used for intermittent feeding, the reliability of the conveyor can be improved, and the occurrence of equipment failures and the cost of equipment maintenance and replacement can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of material conveying, and in particular to an intermittent feeding device and a material conveying system. Background Art

[0002] Bucket conveyors, using hopper 1 as a carrier, are sometimes required during the production process. Bucket conveyors have significant advantages, including large conveying capacity, high lifting height, stable and reliable operation, and long service life. They are suitable for conveying powdered, granular, and small-sized non-abrasive or low-abrasive materials, such as activated carbon, coal, cement, stone, sand, clay, and ore.

[0003] In many cases, process conditions require that materials must not leak during transportation, which requires that adjacent hoppers 1 overlap each other to ensure that there is no gap between the hoppers 1.

[0004] Take activated carbon desulfurization and denitrification technology as an example:

[0005] The adsorption tower and desorption tower are the two primary reaction sites in activated carbon desulfurization and denitrification technology. They work together to adsorb harmful substances from flue gas and regenerate and activate the activated carbon. During operation, saturated activated carbon is discharged from the bottom of the adsorption tower and transported via a conveyor to the top of the desorption tower, where it enters the tower's upper silo. The reactivated activated carbon is discharged from the bottom of the desorption tower and transported via a conveyor to the top of the adsorption tower for recycling.

[0006] The structure of the conveyor can be found in Figure 1 Among them, the relationship between the hopper 1 near the drop point is as follows: Figure 2 As shown, adjacent hoppers 1 overlap each other. The problem caused by overlapping hoppers 1 is that when the conveyor's hoppers 1 turn from a low position to a high position, the hopper 1 in front of the conveyor in the forward direction is required to overlap the hopper 1 behind it; and when the conveyor turns from a high position to a low position, the hopper 1 in front of the conveyor in the forward direction is required to overlap the hopper 1 behind it. Therefore, the conveyor needs to be equipped with a posture control system to continuously adjust the overlapping relationship between the front and rear hoppers 1. Existing posture control systems have complex structures and high precision requirements. The impact noise generated during operation is large, and long-term wear and tear will reduce control accuracy, affecting normal production. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0008] One of the purposes of the present invention is to provide an intermittent feeding device and a material conveying system to solve the problems in the prior art where the hoppers of the conveyor need to be overlapped with each other and a posture control system is set up, resulting in low conveyor reliability, frequent equipment failures and high equipment maintenance and replacement costs.

[0009] In order to achieve this object, the present invention provides an intermittent feeding device, including a storage box, a feed port is provided on the top plate of the storage box, and a discharge port is provided on the bottom plate; an impeller that can rotate around its own central axis is provided inside the storage box, including blades; during the rotation of the blades, at least within a set time period, there is a blade that gradually enters the area corresponding to the discharge port, so that there is no overlap between the orthographic projection of the part of the feed port that is not blocked by the blade on the bottom plate and the part of the discharge port that is not blocked by the blade.

[0010] Preferably, the blades are multiple and evenly mounted on the rotating shaft, and divide the interior of the storage box into multiple independent storage chambers.

[0011] Preferably, the feed area of ​​the feed port is larger than the top surface area of ​​any single blade, and the feed port is never completely blocked by the blade during the rotation of the blade.

[0012] Preferably, a transition storage section is connected above the feed port.

[0013] Preferably, brushes are connected around the bottom of the discharge port to prevent splashing.

[0014] Preferably, the orthographic projection of the feed port on the bottom plate is staggered with the discharge port.

[0015] Preferably, the orthographic projection of the feed port on the bottom plate and the discharge port have an overlapping area; the orthographic projection of any of the blades on the bottom plate completely covers the overlapping area within the set time period.

[0016] Preferably, the bottom surface area of ​​any one of the blades is larger than the area of ​​the discharge port, and the bottom surface of the blade can completely cover the discharge port.

[0017] The present invention also provides a material conveying system, including a conveyor, wherein the conveyor includes hoppers arranged at intervals, and is characterized in that it also includes the above-mentioned intermittent feeding device, and the intermittent feeding device is arranged above the conveyor.

[0018] Preferably, it further comprises a control device for controlling the gap between adjacent hoppers to move to below the intermittent feeding device within the set time period.

[0019] The technical solution of the present invention has the following advantages: When the intermittent feeding device of the present invention is applied to a conveyor, the conveyor hoppers do not need to be overlapped, and a posture control system is not required. Therefore, when using this intermittent feeding device for intermittent feeding, the reliability of the conveyor can be improved, the occurrence of equipment failures and the equipment maintenance and replacement costs can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural diagram of a conveyor in the prior art;

[0022] Figure 2 It is a structural diagram of hoppers overlapped with each other in the prior art;

[0023] Figure 3 It is a structural diagram of hoppers arranged at intervals;

[0024] Figure 4 1 is a schematic diagram of the working state of the intermittent feeding device of Example 1 installed at the drop point of the conveyor;

[0025] Figure 5 yes Figure 4 A-direction structural diagram;

[0026] Figure 6 yes Figure 5 Schematic cross-sectional view at the middle BB;

[0027] Figure 7 1 is a schematic structural diagram of the impeller of Example 1;

[0028] In the figure: 1. hopper; 2. storage box; 3. feed port; 4. discharge port; 5. impeller; 501. blades; 502. rotating shaft; 6. storage chamber; 7. transition storage section; 8. brush; 9. material. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0030] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] See Figure 3 There is a gap between adjacent hoppers 1 of the conveyor. Corresponding to this situation, it is obvious that continuous material falling will cause part of the material 9 to fall into the gap between the adjacent hoppers 1.

[0033] Therefore, the present application provides an intermittent feeding device, including a storage box 2, wherein a feed port 3 is provided on the top plate of the storage box 2, and a discharge port 4 is provided on the bottom plate. An impeller 5 that can rotate around its own central axis is provided inside the storage box 2. The impeller 5 includes blades 501, and the blades 501 satisfy the following conditions: during the rotation of the blades 501, at least within a set time period, there is a blade 501 that gradually enters the area corresponding to the discharge port 4, so that there is no overlap between the orthographic projection of the portion of the feed port 3 that is not blocked by the blade 501 on the bottom plate and the portion of the discharge port 4 that is not blocked by the blade 501.

[0034] The "set time period" can be understood as the time period during which the gap between adjacent hoppers 1 passes below the discharge port 4 when the intermittent feeding device of the present application is installed above the conveyor. In this case, it is ensured that when the gap between adjacent hoppers 1 passes below the discharge port 4, no material 9 will fall from the discharge port 4, thereby preventing leakage.

[0035] Here, "gradually entering" refers to the process of the blade 501 during any continuous period starting from the moment the leading edge of the blade 501 enters the area corresponding to the discharge port 4 and before the trailing edge of the blade 501 enters the area corresponding to the discharge port 4. Furthermore, "front" and "back" in this application are based on the order in which the blade 501 passes during its rotation.

[0036] When the intermittent feeding device of the present application is applied to a conveyor, the hoppers 1 of the conveyor do not need to be overlapped with each other, and there is no need to set up a posture control system. Therefore, when using this intermittent feeding device for intermittent feeding, the reliability of the conveyor can be improved, the occurrence of equipment failures and the cost of equipment maintenance and replacement can be reduced.

[0037] Taking activated carbon desulfurization and denitrification equipment as an example, it is only necessary to set the above-mentioned intermittent feeding device at the bottom of the analysis tower and the adsorption tower to intermittently feed the conveyor.

[0038] The following provides multiple embodiments to illustrate the intermittent feeding device of the present application based on the positional relationship between the feed port 3 and the discharge port 4 .

[0039] Example 1

[0040] See Figure 4-6 In the intermittent feeding device of the first embodiment, the orthographic projection of the feed port 3 on the bottom plate is offset from the discharge port 4. In this case, except for the moment when a blade 501 enters the area corresponding to the hopper 1, material 9 falls from the storage area corresponding to the discharge port 4. After that, no material 9 falls from the discharge port 4 during the entire process of the blade 501 gradually entering the area corresponding to the discharge port 4.

[0041] from Figure 5 It is found that the feed port 3 and the discharge port 4 are almost arranged opposite to each other, so that the orthographic projection of the feed port 3 on the bottom plate does not overlap with the discharge port 4, that is, the two are staggered with each other.

[0042] In this case, during the entire process of a blade 501 gradually entering the area corresponding to the discharge port 4, no material 9 will fall from the discharge port 4. Therefore, as long as the hopper 1 is controlled to move below the discharge port 4, that is, the drop point during this process, leakage of material can be prevented. In order to load the material, the hopper 1 can be controlled to move below the discharge port 4 when material 9 falls from the discharge port 4.

[0043] Among them, through Figure 4 and Figure 6It is found that a brush 8 is provided around the discharge port 4. The brush 8 can prevent the material 9 from splashing when it falls from the discharge port 4 into the hopper 1, further ensuring that the material 9 falls into the hopper 1. In addition, the brush 8 can also avoid rigid contact between the storage box 2 and the hopper 1.

[0044] Combine Figure 7 It can be found that the impeller 5 of the intermittent feeding device of the present embodiment 1 includes six blades 501, and all of them are installed on a rotating shaft 502. On this basis, combined with Figure 5 It was found that the cross section of the storage box 2 is circular, so that the outer end of the blade 501 just does not contact the inner wall of the storage box 2, and the interior of the storage box 2 is divided into multiple independent storage chambers 6.

[0045] Here, the "outer end of blade 501" refers to Figure 5 An end away from the rotating shaft 502.

[0046] In this case, since the outer end of the blade 501 does not contact the inner wall of the storage box 2, friction between the blade 501 and the inner wall of the storage box 2 is prevented during the rotation of the blade 501. Of course, a flexible material such as a brush or rubber can also be provided at the outer end of the blade 501, so that even if there is contact between the blade 501 and the inner wall of the storage box 2, the storage box 2 will not be damaged.

[0047] Furthermore, to ensure intermittent feeding at the discharge port 4, the bottom surface of the blade 501 should contact or nearly contact the bottom plate of the storage box 2. The top surface of the blade 501 may be spaced apart from the top plate of the storage box 2. Furthermore, when there is a space between the top surface of the blade 501 and the top plate, "dividing the interior of the storage box 2 into a plurality of mutually independent storage chambers 6" should be understood as meaning that, in the direction of rotation of the blade 501, the interior of the storage box 2 is separated by adjacent blades 501, thereby preventing mixing of materials 9 in adjacent storage chambers 6.

[0048] It should be noted that the number of blades 501 in the first embodiment is not limited by the accompanying drawings. For example, the blades 501 may be any number of blades, or even a single blade 501. When the blade 501 is a single blade, only one storage cavity 6 is formed in the entire storage box 2.

[0049] In addition, the shape of the blade 501 does not have to be fan-shaped. Similarly, the shape of the feed port 3 and the discharge port 4 does not have to be fan-shaped, and other shapes are also possible. Figure 5 It can also be found that, preferably but not necessarily, the conveying direction of the conveyor is the same as the tangential direction of the blade 501 when it passes the discharge port 4.

[0050] In addition, in order to prevent the material 9 from splashing when entering the storage box 2, it is preferred to connect the transition storage section 7 above the feed inlet 3, see Figure 6 Since the transition storage section 7 is provided, when the falling material at the feed inlet 3 is at least partially blocked by the blades 501 , the material 9 can be temporarily stored in the transition storage section 7 .

[0051] In order to ensure uniform material storage in each storage chamber 6, thereby ensuring that the material 9 falling into each hopper 1 is as evenly distributed as possible, the feed area of ​​the feed port 3 is preferably larger than the top surface area of ​​any single blade 501, and the feed port 3 is not completely blocked by the blade 501 during the rotation of the blade 501. Therefore, when the blade 501 rotates below the feed port 3, it does not affect the uniform feeding. Of course, the transition storage section 7 provided above can also play a role in ensuring uniform feeding of each storage chamber 6.

[0052] It is worth mentioning that, in order to ensure uniform loading for each hopper 1, it is preferred that the orthographic projection of any blade 501 on the bottom plate completely covers the orthographic projection of the feed port 3 on the bottom plate at least at a certain moment.

[0053] Example 2

[0054] The difference from Example 1 is that, in the intermittent feeding device of Example 2, the orthographic projection of the feed port 3 on the bottom plate has an overlapping area with the discharge port 4; the orthographic projection of any blade 501 on the bottom plate completely covers the overlapping area within the set time period.

[0055] In this case, it is not enough for the blade 501 to gradually enter the area corresponding to the discharge port 4 to ensure that no material 9 falls from the discharge port 4. At the same time, it is also necessary to ensure that the orthographic projection of the portion of the feed port 3 not blocked by the blade 501 on the bottom plate does not overlap with the portion of the discharge port 4 not blocked by the blade 501.

[0056] Preferably, the bottom surface area of ​​any blade 501 is larger than the area of ​​the discharge port 4, and the bottom surface of the blade 501 can completely cover the discharge port 4. Here, "the bottom surface of the blade 501 can completely cover the discharge port 4" means that during the rotation of the blade 501, when the blade 501 rotates to the area corresponding to the discharge port 4, the blade 501 completely covers the discharge port 4.

[0057] In this case, when the discharge port 4 is completely covered by the blade 501, it can be ensured that there is no overlap between the positive projection of the part of the feed port 3 that is not blocked by the blade 501 on the bottom plate and the part of the discharge port 4 that is not blocked by the blade 501, thereby ensuring that there is a set time period so that no material 9 falls at the discharge port 4.

[0058] Example 3

[0059] The third embodiment provides a material 9 conveying system, including a conveyor, wherein the conveyor includes hoppers 1 arranged at intervals, and also includes the above-mentioned intermittent feeding device, and the intermittent feeding device is arranged above the conveyor.

[0060] Specifically, the intermittent feeding device is installed at the dropping point of the conveyor, so that when the hopper 1 moves to the bottom of the intermittent feeding device, the intermittent feeding device feeds the hopper 1; when the gap between the hoppers 1 moves to the bottom of the intermittent feeding device, the intermittent feeding device stops dropping.

[0061] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

Claims

1. A material conveying system comprising a conveyor, wherein the conveyor comprises hoppers arranged at intervals, characterized in that: The conveyor further comprises an intermittent feeding device, the intermittent feeding device being arranged above the conveyor, the intermittent feeding device comprising a receiving storage box, a feed port being arranged on a top plate of the storage box, and a discharge port being arranged on a bottom plate; an impeller rotatable around its own central axis is arranged inside the storage box, comprising blades; during the rotation of the blades, at least within a set time period, one of the blades gradually enters the area corresponding to the discharge port, so that the orthographic projection of the portion of the feed port not blocked by the blade on the bottom plate does not overlap with the portion of the discharge port not blocked by the blade; The number of the blades is multiple and they are evenly mounted on the rotating shaft, and the interior of the storage box is divided into multiple independent storage chambers; The feed area of ​​the feed port is larger than the top surface area of ​​any single blade, and the feed port is never completely blocked by the blade during the rotation of the blade.

2. The material conveying system according to claim 1, characterized in that: The feed port is connected above a transition storage section.

3. The material conveying system according to claim 1, characterized in that: The four sides below the discharge port are connected with brushes for preventing material from splashing.

4. The material conveying system according to any one of claims 1 to 3, characterized in that: The orthographic projection of the feed port on the bottom plate is staggered with the discharge port.

5. The material conveying system according to any one of claims 1 to 3, characterized in that: The orthographic projection of the feed port on the bottom plate overlaps with the discharge port; the orthographic projection of any blade on the bottom plate completely covers the overlapping area within the set time period.

6. The material conveying system according to claim 5, characterized in that: The bottom surface area of ​​any one of the blades is larger than the area of ​​the discharge port, and the bottom surface of the blade can completely cover the discharge port.

7. The material conveying system according to any one of claims 1 to 3, characterized in that: It also includes a control device for controlling the gap between adjacent hoppers to move to below the intermittent feeding device within the set time period.

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