Blanking opening shielding device and material conveying system

Abstract

The utility model provides a blanking port shielding device and a material conveying system, and relates to the technical field of material transportation, the blanking port shielding device comprises: a blocking and protecting mechanism movably arranged on a first conveying platform; one end of the push-pull mechanism is connected with the blocking and protecting mechanism, and the other end of the push-pull mechanism is connected with the conveyor belt telescopic head; the push-pull mechanism comprises a first push-pull piece and a second push-pull piece; a first limiting structure and a second limiting structure are arranged on the second push-pull piece, and the first push-pull piece is arranged between the first limiting structure and the second limiting structure in a matched mode; the push-and-pull mechanism is used for driving the first push-and-pull piece to make contact with the first limiting structure to push the blocking and protecting mechanism to move to open the second discharging opening through the conveying belt telescopic head, and the push-and-pull mechanism is further used for driving the first push-and-pull piece to make contact with the second limiting structure to pull the blocking and protecting mechanism to move to cover the second discharging opening through the conveying belt telescopic head. And it can be ensured that the coal falling opening where coal is not fed is blocked, and coal feeding safety is better guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of material transportation, and in particular, to a blanking port shielding device and a material conveying system. Background Art

[0002] Coal is the main fuel of thermal power plants, and its demand is quite large. In order not to affect the power generation efficiency of the unit, a coal conveying system is usually used to transfer coal from the coal storage yard to the vicinity of the boiler. The coal storage yard and the boiler are usually at different height positions, and the same coal storage yard needs to convey coal to multiple different boilers. Therefore, the existing coal conveying system generally includes two conveyor belts arranged at intervals below and one conveyor belt arranged above. The conveyor belt above extends to the coal storage yard, and the two conveyor belts below extend to the vicinity of the corresponding boilers respectively. The conveyor belt above has a telescopic head, and a first coal dropping port and a second coal dropping port are arranged in sequence on the ground or the support platform where the conveyor belt above is located along the extending direction of the telescopic head. The telescopic head of the conveyor belt above can telescopically move so that the coal material thereon can selectively fall into the corresponding conveyor belt below from the first coal dropping port and the second coal dropping port.

[0003] During the actual operation process, since the first coal dropping port and the second coal dropping port alternate in coal feeding, when the telescopic head retracts to the first coal dropping port, the second coal dropping port is in an exposed state. In an environment with a lot of dust and poor visibility, it is very easy to occur an accident that an employee stumbles and falls from the second coal dropping port, and the coal feeding safety is relatively poor. Summary of the Utility Model

[0004] The utility model aims to solve the technical problem that the coal feeding safety of the existing two-way coal dropping ports cannot be fully guaranteed and it is easy to occur accidents of personnel stumbling and falling.

[0005] On the one hand, the utility model provides a blanking port shielding device, which is used to be arranged on a first conveying platform having a first blanking port and a second blanking port, and a retractable first conveyor belt is arranged on the first conveying platform. The conveyor belt telescopic head of the first conveyor belt can telescopically align with the first blanking port or the second blanking port for feeding. The blanking port shielding device includes:

[0006] A shielding mechanism, which is movably arranged on the first conveying platform;

[0007] A push-pull mechanism, one end of the push-pull mechanism is connected to the shielding mechanism, and the other end is connected to the conveyor belt telescopic head; the push-pull mechanism includes a first push-pull member and a second push-pull member; a first limiting structure and a second limiting structure are arranged on the second push-pull member, and the first push-pull member is arranged between the first limiting structure and the second limiting structure in a matching manner; the push-pull mechanism is used to drive through the conveyor belt telescopic head so that the first push-pull member contacts the first limiting structure to push the shielding mechanism to move and open the second blanking port, and the push-pull mechanism is also used to drive through the conveyor belt telescopic head so that the first push-pull member contacts the second limiting structure to pull the shielding mechanism to move and cover the second blanking port.

[0008] Optionally, the first push-pull member is a pull ring, the second push-pull member is a push rod, the first limiting structure and the second limiting structure are arranged on the push rod, the pull ring is sleeved on the push rod and the pull ring is located between the first limiting structure and the second limiting structure;

[0009] The pull ring is arranged on the conveyor belt telescopic head, one end of the push rod is fixedly arranged on the shielding mechanism, and the other end is connected with the pull ring in a matching manner; or, the pull ring is arranged on the shielding mechanism, one end of the push rod is arranged on the conveyor belt telescopic head, and the other end is connected with the pull ring in a matching manner.

[0010] Optionally, the pull ring is arranged on the conveyor belt telescopic head, one end of the push rod is fixedly arranged on the shielding mechanism, and the other end is connected with the pull ring in a matching manner, the first limiting structure is arranged close to the shielding mechanism, and the second limiting structure is arranged close to the conveyor belt telescopic head.

[0011] Optionally, the blanking port shielding device further includes a track, the track is arranged on the first conveying platform, the extending direction of the track is consistent with the telescopic direction of the conveyor belt telescopic head, and the shielding mechanism is movably arranged on the track.

[0012] Optionally, the two tracks are respectively arranged on both sides of the second blanking port, and the shielding mechanism is movably arranged on the two tracks; and / or, the length of the track is at least twice the length of the shielding mechanism.

[0013] Optionally, the shielding mechanism includes a shielding body and rollers, the shielding body is matched with the shape of the second blanking port and is used for covering the second blanking port, and the shielding body is movably arranged on the track through the rollers.

[0014] Optionally, the blanking port shielding device further includes a baffle, the baffle is arranged at one end of the track away from the conveyor belt telescopic head, and the baffle abuts against the shielding mechanism when the conveyor belt telescopic head is located at the second blanking port to limit the shielding mechanism from moving away from the conveyor belt telescopic head.

[0015] Optionally, the blanking port shielding device further includes a connection structure. There are two pushing and pulling mechanisms, and the two pushing and pulling mechanisms are respectively located on both sides of the conveyor belt telescopic head in the width direction. The second pushing and pulling members of the two pushing and pulling mechanisms are respectively connected to the connection structure, and the connection structure is connected to the shielding mechanism.

[0016] Optionally, the connection structure includes a cross bar and a vertical bar. The cross bar is fixedly connected between the two second pushing and pulling members, and the part of the cross bar between its two ends is connected to the shielding mechanism through the two vertical bars.

[0017] On the other hand, the present invention also proposes a material conveying system, including the above-mentioned blanking port shielding device.

[0018] The blanking port shielding device and the material conveying system of the present invention have at least the following advantages compared with the prior art:

[0019] The conveyor belt telescopic head at one end of the first conveyor belt can be located near the first discharge opening and the second discharge opening, and the conveyor belt telescopic head can extend in the direction from the first discharge opening to the second discharge opening and retract in the direction from the second discharge opening to the first discharge opening. The conveyor belt telescopic head is connected to the shielding mechanism through a push-pull mechanism. When the conveyor belt telescopic head is located at the first discharge opening, the first discharge opening is blocked by the conveyor belt telescopic head, and the second discharge opening is blocked by the shielding mechanism, and no accident of personnel falling due to a misstep will occur at both discharge openings; the second push-pull member is sequentially provided with a first limit structure and a second limit structure along the telescopic direction of the conveyor belt telescopic head. Taking the first push-pull member being arranged between the first limit structure and the second limit structure and connecting the first push-pull member to the conveyor belt telescopic head and the second push-pull member to the shielding mechanism as an example: when the conveyor belt telescopic head extends from the first discharge opening towards the second discharge opening, the conveyor belt telescopic head and the first push-pull member thereon move relative to the second push-pull member. After the first push-pull member abuts against one of the limit structures, the conveyor belt telescopic head and the first push-pull member thereon stop moving relative to the second push-pull member. At this time, the conveyor belt telescopic head continues to extend and pushes the shielding mechanism to move until the second discharge opening is opened and the conveyor belt telescopic head is located at the second discharge opening. Since the other part of the first conveyor belt blocks the first discharge opening, that is, no accident of personnel falling due to a misstep will occur at both discharge openings; when it is necessary to switch from discharging through the second discharge opening to discharging through the first discharge opening, the conveyor belt telescopic head retracts towards the first discharge opening. The conveyor belt telescopic head and the first push-pull member can move relative to the second push-pull member. After the first push-pull member moves to abut against the other limit structure, the conveyor belt telescopic head and the first push-pull member thereon stop moving relative to the second push-pull member. At this time, the conveyor belt telescopic head continues to retract and pushes the shielding mechanism to move until the second discharge opening is closed and the conveyor belt telescopic head is located at the first discharge opening. At this time, no accident of personnel falling due to a misstep will occur at both discharge openings. Using the discharge opening shielding device described in the present utility model can ensure that when coal is loaded at one of the first discharge opening and the second discharge opening, the other discharge opening, that is, the discharge opening without coal loading, is blocked, and the coal loading safety is more guaranteed. In addition, compared with the technical solution in which the conveyor belt telescopic head is directly connected to the shielding mechanism through a fixedly connected push-pull rod, and the shielding mechanism moves synchronously with the conveyor belt telescopic head and the two move the same distance, in the present utility model, by using the sliding connection between the second push-pull member on the shielding mechanism and the first push-pull member on the conveyor belt telescopic head, the relative movement between the conveyor belt telescopic head and the shielding mechanism can be realized. By using the two limit structures on the second push-pull member to abut against the first push-pull member on the conveyor belt telescopic head during the pushing and pulling process, the synchronous movement between the conveyor belt telescopic head and the shielding mechanism can be realized. In this way, when the second discharge opening is opened, the conveyor belt telescopic head first moves relative to the shielding mechanism and then pushes the shielding mechanism to move together, that is, the moving distance of the shielding mechanism is less than the moving distance of the conveyor belt telescopic head. Only a relatively small space needs to be set on the side of the second discharge opening away from the first discharge opening to place the shielding mechanism, effectively saving the site occupation. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the material conveying system according to an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 a partial structural schematic diagram of;

[0022] Figure 3 It is a schematic structural diagram of the push - pull mechanism according to an embodiment of the present utility model;

[0023] Figure 4 It is a schematic diagram of the state when the conveyor belt telescopic head of the embodiment of the present utility model is located at the first material dropping port;

[0024] Figure 5 It is a schematic diagram of the state when the pull - ring on the conveyor belt telescopic head of the embodiment of the present utility model abuts against the first limit block;

[0025] Figure 6 It is a schematic diagram of the state when the conveyor belt telescopic head of the embodiment of the present utility model is located at the second material dropping port.

[0026] Description of the reference numerals:

[0027] 1. Guarding mechanism; 11. Guarding body; 12. Roller; 2. Push - pull mechanism; 21. First push - pull member; 22. Second push - pull member; 23. First limit structure; 24. Second limit structure; 3. Connection structure; 31. Cross bar; 32. Vertical bar; 4. Track; 5. First conveyor belt; 51. Conveyor belt telescopic head; 6. Second conveyor belt; 7. Baffle; 100. First conveying platform; 101. First material dropping port; 102. Second material dropping port; 200. Second conveying platform. Detailed Embodiments

[0028] To make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the drawings.

[0029] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "matching" 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 direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In addition, it should be noted that in the description of the present utility model, it should be explained that the terms indicating directions in each embodiment, such as "upper", "lower", "front", "rear", etc., are only used to simplify the description of the positional relationship based on the drawings in the specification, and do not represent that the indicated elements and devices, etc. must operate according to the specific directions, limited operations, methods, and structures described in the specification. Such terms indicating directions do not constitute a limitation to the present utility model.

[0031] In this article, an XYZ coordinate system is established. And it should be noted that the meanings represented by the aforementioned X-axis, Y-axis, and Z-axis are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0032] As Figures 1 - 6 shown, a blanking port shielding device according to an embodiment of the present utility model is used to be arranged on a first conveying platform 100 having a first blanking port 101 and a second blanking port 102. And a retractable first conveyor belt 5 is arranged on the first conveying platform 100. The conveyor belt telescopic head 51 of the first conveyor belt 5 can be telescoped and aligned with the first blanking port 101 or the second blanking port 102 for feeding. The blanking port shielding device includes:

[0033] A shielding mechanism 1, which is movably arranged on the first conveying platform 100;

[0034] A pushing and pulling mechanism 2, one end of the pushing and pulling mechanism 2 is connected to the shielding mechanism 1, and the other end is connected to the conveyor belt telescopic head 51; the pushing and pulling mechanism 2 includes a first pushing and pulling member 21 and a second pushing and pulling member 22; a first limiting structure 23 and a second limiting structure 24 are arranged on the second pushing and pulling member 22, and the first pushing and pulling member 21 is cooperatively arranged between the first limiting structure 23 and the second limiting structure 24; the pushing and pulling mechanism 2 is used to drive through the conveyor belt telescopic head 51 to make the first pushing and pulling member 21 contact the first limiting structure 23 to push the shielding mechanism 1 to move and open the second blanking port 102, and the pushing and pulling mechanism 2 is also used to drive through the conveyor belt telescopic head 51 to make the first pushing and pulling member 21 contact the second limiting structure 24 to pull the shielding mechanism 1 to move and cover the second blanking port 102.

[0035] Specifically, the blanking port shielding device is applied to a feeding system having two blanking ports, such as Figure 1As shown in the figure, the first conveyor belt 5 of the feeding system is arranged on the first conveying platform 100, and the second conveyor belt 6 is arranged on the second conveying platform 200. The first conveying platform 100 is located above the second conveying platform 200. The first conveyor belt 5 extends along the direction shown by the X-axis, and the second conveyor belt 6 extends along the direction shown by the Y-axis. There are two second conveyor belts 6 arranged at intervals along the direction shown by the X-axis. On the first conveying platform 100, a first material dropping opening 101 and a second material dropping opening 102 are respectively arranged at positions corresponding to the two second conveyor belts 6. One end of the first conveyor belt 5 is provided with a conveyor belt telescopic head 51. The first material dropping opening 101 and the second material dropping opening 102 are arranged in sequence along the extending direction of the conveyor belt telescopic head 51. The conveyor belt telescopic head 51 extends along the positive direction of the X-axis and is generally located near the first material dropping opening 101 and the second material dropping opening 102. When the conveyor belt telescopic head 51 is located at the first material dropping opening 101, materials such as coal on the first conveyor belt 5 fall from the first material dropping opening 101 onto the corresponding second conveyor belt 6 below. When the conveyor belt telescopic head 51 is located at the second material dropping opening 102, materials such as coal on the first conveyor belt 5 fall from the second material dropping opening 102 onto the corresponding second conveyor belt 6 below, thereby realizing coal feeding for the two second conveyor belts 6.

[0036] It can be understood that the first conveyor belt 5, the second conveyor belt 6, the conveyor belt telescopic head 51, etc. belong to the equipment in the prior art. Only a simple principle introduction is made here. Those skilled in the art can implement it in combination with the prior art according to actual needs and will not be further described here.

[0037] The second pushing and pulling member 22 is successively provided with a first limiting structure 23 and a second limiting structure 24 along the telescopic direction of the conveyor belt. The first pushing and pulling member 21 is arranged between the first limiting structure 23 and the second limiting structure 24 and can move relative to the second pushing and pulling member 22. The first pushing and pulling member 21 can be connected to the conveyor belt telescopic head 51, and the second pushing and pulling member 22 is connected to the shielding mechanism 1; or, the first pushing and pulling member 21 is connected to the shielding mechanism 1, and the second pushing and pulling member 22 is connected to the conveyor belt telescopic head 51; the two situations are similar. For the convenience of description, the following takes the first pushing and pulling member 21 being connected to the conveyor belt telescopic head 51 and the second pushing and pulling member 22 being connected to the shielding mechanism 1 as an example for description.

[0038] In this embodiment, when the conveyor belt telescopic head 51 is located at the first material dropping opening 101, the first material dropping opening 101 is blocked by the conveyor belt telescopic head 51, and the second material dropping opening 102 is blocked by the shielding mechanism 1. No accident of personnel falling will occur at both material dropping openings; when the conveyor belt telescopic head 51 extends from the first material dropping opening 101 towards the direction close to the second material dropping opening 102, the conveyor belt telescopic head 51 drives the first pushing and pulling member 21 thereon to move relative to the second pushing and pulling member 22. When the first pushing and pulling member 21 moves to abut against the first limiting structure 23 (such as Figure 5After the situation shown in the figure, the conveyor belt telescopic head 51 and the first push-pull member 21 thereon remain stationary relative to the second push-pull member 22. At this time, the conveyor belt telescopic head 51 continues to extend and drives the shielding mechanism 1 to move (such as linear movement or folding movement) through the first push-pull member 21 and the second push-pull member 22 to open the second blanking port 102 until the conveyor belt telescopic head 51 is located at the second blanking port 102 for blanking through the second blanking port 102, as Figure 6 shown in the figure. At this time, the second blanking port 102 is blocked by the conveyor belt telescopic head 51, and the other part of the first conveyor belt 5 blocks the first blanking port 101, that is, no accident of personnel falling due to misstep will occur at both blanking ports; when it is necessary to switch from blanking through the second blanking port 102 to blanking through the first blanking port 101, the conveyor belt telescopic head 51 retracts towards the direction close to the first blanking port 101, and the conveyor belt telescopic head 51 and the first push-pull member 21 can move relative to the second push-pull member 22. After the first push-pull member 21 moves to abut against the second limiting structure 24, the conveyor belt telescopic head 51 and the first push-pull member 21 thereon remain stationary relative to the second push-pull member 22. At this time, the conveyor belt telescopic head 51 continues to retract and drives the shielding mechanism 1 to move (such as linear movement or unfolding movement) through the first push-pull member 21 and the second push-pull member 22 to close the second blanking port 102 until the conveyor belt telescopic head 51 is located at the first blanking port 101, as Figure 4 shown in the figure. At this time, the second blanking port 102 is blocked by the shielding mechanism 1, and the first blanking port 101 is blocked by the conveyor belt telescopic head 51, and no accident of personnel falling due to misstep will occur at both blanking ports. By using the blanking port shielding device of the present utility model, when coal is fed into one of the first blanking port 101 and the second blanking port 102, it can be ensured that the other blanking port, that is, the blanking port without coal feeding, is blocked, and the coal feeding safety is more guaranteed. In addition, compared with the technical solution in which the conveyor belt telescopic head 51 is directly connected to the shielding mechanism 1 through a fixedly connected push-pull rod, and the shielding mechanism 1 moves synchronously with the conveyor belt telescopic head 51, and the moving distances of the two are equal, in the present utility model, the second push-pull member 22 on the shielding mechanism 1 is slidably connected to the first push-pull member 21 on the conveyor belt telescopic head 51, so as to realize the relative movement between the conveyor belt telescopic head 51 and the shielding mechanism 1. By using the two limiting structures on the second push-pull member 22 to abut against the first push-pull member 21 on the conveyor belt telescopic head 51 during the pushing and pulling process, the synchronous movement of the conveyor belt telescopic head 51 and the shielding mechanism 1 can be realized. In this way, when opening the second blanking port 102, the conveyor belt telescopic head 51 first moves relative to the shielding mechanism 1 and then drives the shielding mechanism 1 to move together, that is, the moving distance of the shielding mechanism 1 is less than the moving distance of the conveyor belt telescopic head 51. Only a relatively small space needs to be set on the side of the second blanking port 102 far from the first blanking port 101 to place the shielding mechanism 1, effectively saving the site occupation.

[0039] Optionally, the first push-pull member 21 is a pull ring, the second push-pull member 22 is a push rod, the first limiting structure 23 and the second limiting structure 24 are arranged on the push rod, the pull ring is sleeved on the push rod and the pull ring is located between the first limiting structure 23 and the second limiting structure 24;

[0040] The pull ring is arranged on the conveyor belt telescopic head 51, one end of the push rod is fixedly arranged on the shielding mechanism 1, and the other end is connected with the pull ring in a matching manner; or, the pull ring is arranged on the shielding mechanism 1, one end of the push rod is arranged on the conveyor belt telescopic head 51, and the other end is connected with the pull ring in a matching manner.

[0041] In this embodiment, as Figure 3 shown, the first push-pull member 21 is a pull ring, the second push-pull member 22 is a push rod, and the push rod can be an elongated rod extending along the direction shown by the X axis. The situation where the pull ring is arranged on the conveyor belt telescopic head 51 and the push rod is connected to the shielding mechanism 1 is similar to the situation where the pull ring is arranged on the shielding mechanism 1 and the push rod is connected to the conveyor belt telescopic head 51. For the convenience of description, the following takes the example where the pull ring is arranged on the conveyor belt telescopic head 51 and one end of the push rod is fixedly arranged on the shielding mechanism 1: One end of the push rod in the positive X-axis direction is fixedly connected to the shielding mechanism 1, and the end of the push rod in the negative X-axis direction is used to pass through the pull ring and is used to slide relative to the pull ring. The first limiting structure 23 and the second limiting structure 24 are arranged on the push rod, and the pull ring is located between the first limiting structure 23 and the second limiting structure 24. Both the first limiting structure 23 and the second limiting structure 24 can be limiting blocks.

[0042] When the conveyor belt telescopic head 51 extends in the positive X-axis direction, it will drive the pull ring to move relative to the push rod in the positive X-axis direction. After the pull ring moves to abut against one of the limiting structures, when the conveyor belt telescopic head 51 continues to extend, it can push the shielding mechanism 1 to move and open the second blanking port 102; when the conveyor belt telescopic head 51 retracts in the negative X-axis direction and drives the pull ring to move to abut against the other limiting structure, when the conveyor belt telescopic head 51 continues to shorten, it can push the shielding mechanism 1 to move to shield the second blanking port 102.

[0043] In some other embodiments, the first push-pull member 21 and the second push-pull member 22 can be a first slide rail and a second slide rail that are slidably connected to each other, and the first slide rail is provided with a first limiting structure and a second limiting structure along its sliding direction. The principle of realizing the pushing and pulling of the shielding mechanism 1 to move is similar to the above, and will not be repeated here.

[0044] As Figure 2As shown, optionally, the pull ring is arranged on the telescopic head 51 of the conveyor belt. One end of the push-pull rod is fixedly arranged on the shielding mechanism 1, and the other end is cooperatively connected with the pull ring. The first limiting structure 23 is arranged close to the shielding mechanism 1, and the second limiting structure 24 is arranged close to the telescopic head 51 of the conveyor belt.

[0045] In this embodiment, when opening the second blanking port 102, the telescopic head 51 of the conveyor belt needs to first extend a certain distance in the positive X-axis direction. After the pull ring abuts against the first limiting structure 23 on the push-pull rod, it will push the push-pull rod and the shielding mechanism 1 to move together in the positive X-axis direction to open the second blanking port 102. The first limiting structure 23 is arranged close to the shielding mechanism 1, that is, when the telescopic head 51 of the conveyor belt moves from the first blanking port 101 to the second blanking port 102 and the pull ring abuts against the first limiting structure 23, the distance between the telescopic head 51 of the conveyor belt and the shielding mechanism 1 is small. After that, the telescopic head 51 of the conveyor belt only needs to continue to push the shielding mechanism 1 to move a small distance in the positive X-axis direction to open the second blanking port 102. The distance that the shielding mechanism 1 moves in the positive X-axis direction is small, occupying less site space.

[0046] When the feeding of the second blanking port 102 is completed and it is necessary to switch to the first blanking port 101, the telescopic head 51 of the conveyor belt needs to first retract a certain distance in the negative X-axis direction. After the pull ring abuts against the second limiting structure 24 on the push-pull rod, it will push the push-pull rod and the shielding mechanism 1 to move together in the negative X-axis direction to open the first blanking port 101 and close the second blanking port 102.

[0047] As Figure 2 shown, optionally, the blanking port shielding device further includes a track 4. The track 4 is arranged on the first conveying platform 100, and the extending direction of the track 4 is consistent with the telescopic direction of the telescopic head 51 of the conveyor belt. The shielding mechanism 1 is movably arranged on the track 4.

[0048] Here, the track 4 extends along the direction shown by the X-axis. The length of the track 4 needs to be determined according to the size of the shielding mechanism 1 along the direction shown by the X-axis and the distance that the shielding mechanism 1 moves in the positive X-axis direction. By setting the track 4 and movably arranging the shielding mechanism 1 on the track 4, the convenient pushing and pulling of the shielding mechanism 1 can be realized, ensuring the smooth movement of the shielding mechanism 1.

[0049] Optionally, the two tracks 4 are respectively used to be arranged on both sides of the second blanking port 102, and the shielding mechanism 1 is movably arranged on the two tracks 4; and / or, the length of the track 4 is at least twice the length of the shielding mechanism 1.

[0050] Specifically, there are two tracks 4, which are respectively located on both sides of the second blanking port 102 in the Y direction. One end of the track 4 is aligned with one end of the second blanking port 102 close to the conveyor belt telescopic head 51, and the other end of the track 4 extends along the positive X-axis direction to extend out of the second blanking port 102.

[0051] In this embodiment, the length of the track 4 is at least twice the length of the shielding mechanism 1. When the shielding mechanism 1 is pushed by the pushing and pulling mechanism 2, it can move from above the second blanking port 102 to one side of the second blanking port 102 to ensure that the second blanking port 102 is completely opened.

[0052] As Figure 2 shown, optionally, the shielding mechanism 1 includes a shielding body 11 and rollers 12. The shielding body 11 matches the shape of the second blanking port 102 and is used to cover the second blanking port 102. The shielding body 11 is movably arranged on the track 4 through the rollers 12.

[0053] Specifically, the second blanking port 102 can be a rectangular blanking port. The shielding body 11 can be horizontally arranged at the second blanking port 102. Rollers 12 are respectively arranged on both sides of the shielding body 11 in the Y direction. The rollers 12 on both sides are respectively located on the corresponding tracks 4. The shielding body 11 is movably arranged on the track 4 through the rollers 12, so that when the shielding body 11 is pushed and pulled by the push rod, it can smoothly move along the track 4 without jamming or shaking.

[0054] As Figure 2 shown, optionally, the blanking port shielding device further includes a baffle 7. The baffle 7 is arranged at one end of the track 4 far from the conveyor belt telescopic head 51. The baffle 7 abuts against the shielding mechanism 1 when the conveyor belt telescopic head 51 is located at the second blanking port 102 to limit the movement of the shielding mechanism 1 in the direction away from the conveyor belt telescopic head 51.

[0055] Specifically, the baffle 7 is arranged at one end of the track 4 along the positive X-axis direction, and the baffle 7 extends along the YZ plane.

[0056] In this embodiment, when it is necessary to open the second blanking port 102, the conveyor belt telescopic head 51 pushes the shielding mechanism 1 to move along the positive X-axis direction until the shielding mechanism 1 abuts against the baffle 7. At this time, the second blanking port 102 is just opened, and the conveyor belt telescopic head 51 is located above the second blanking port 102. The baffle 7 can be used to realize the movement limit of the shielding mechanism 1 along the positive X-axis direction; and because the first limiting structure 23 on the second pushing member 22 abuts against the first pushing member 21 on the conveyor belt telescopic head 51, the movement of the second pushing member 22, that is, the shielding mechanism 1, along the negative X-axis direction can be restricted, so as to ensure that the shielding mechanism 1 will not move along the direction shown by the X-axis and avoid interference with surrounding structures.

[0057] As Figure 2 , Figure 4 , Figure 5 and Figure 6 shown, optionally, the blanking port shielding device further includes a connection structure 3. There are two push-pull mechanisms 2, and the two push-pull mechanisms 2 are respectively located on both sides in the width direction of the conveyor belt telescopic head 51. The second push-pull members 22 of the two push-pull mechanisms 2 are respectively connected to the connection structure 3, and the connection structure 3 is connected to the shielding mechanism 1.

[0058] Specifically, the width direction of the conveyor belt telescopic head 51 is also the direction shown by the Y-axis. The two push-pull mechanisms 2 are respectively arranged on both sides of the conveyor belt telescopic head 51 in the Y direction. The first push-pull members 21 of the two push-pull mechanisms 2 are respectively connected to the side walls on both sides of the conveyor belt telescopic head 51 in the Y direction, and the first push-pull member 21 can slide smoothly relative to the second push-pull member 22. The connection structure 3 serves to connect the push-pull mechanism 2 and the shielding mechanism 1.

[0059] In this embodiment, two push-pull mechanisms 2 are provided between the conveyor belt telescopic head 51 and the shielding mechanism 1, so that the telescopic movement of the conveyor belt telescopic head 51 and the movement of the shielding mechanism 1 are more stable and reliable. The push-pull mechanism 2 can be connected to the middle parts on both sides of the conveyor belt telescopic head 51, and the driving force of the conveyor belt telescopic head 51 can be transmitted to the push-pull mechanism 2 more smoothly. The shielding mechanism 1 needs to be as close as possible to the first conveying platform 100 while ensuring smooth movement, that is, the shielding mechanism 1 is located below the push-pull mechanism 2, and the connection between the upper push-pull mechanism 2 and the lower shielding mechanism 1 can be realized through the connection structure 3.

[0060] As Figure 2 shown, optionally, the connection structure 3 includes a cross bar 31 and vertical bars 32. The cross bar 31 is fixedly connected between the two second push-pull members 22, and the part of the cross bar 31 between its two ends is connected to the shielding mechanism 1 through the two vertical bars 32.

[0061] Specifically, the cross bar 31 is an elongated bar extending in the direction shown by the Y-axis, and the vertical bars 32 are elongated bars extending in the direction shown by the Z-axis. The second push-pull members 22 of the two push-pull mechanisms 2 are respectively connected to the two ends of the cross bar 31. The upper ends of the two vertical bars 32 are respectively connected to the cross bar 31, and the lower ends of the two vertical bars 32 are respectively connected to the two sides of the shielding mechanism 1 in the Y direction, so as to realize the connection between the second push-pull member 22 and the shielding mechanism 1.

[0062] In this embodiment, by providing the cross bar 31 and the two vertical bars 32, a stable connection between the second push-pull members 22 on both sides and the shielding mechanism 1 can be realized, so that the driving force on the second push-pull member 22 can be transmitted to the shielding mechanism 1 more smoothly to push and pull the shielding mechanism 1.

[0063] As Figure 1 shown, another embodiment of the present utility model provides a feeding system, including the above-mentioned blanking port shielding device. The advantages of the feeding system compared with the prior art are the same as those of the above-mentioned blanking port shielding device, and will not be repeated here.

[0064] Although the present utility model is disclosed as above, the protection scope of the present utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. A material drop opening shielding device, used for being arranged on a first conveying platform (100) having a first material drop opening (101) and a second material drop opening (102), and the first conveying platform (100) is provided with a retractable first conveyor belt (5), and the conveyor belt retractable head (51) of the first conveyor belt (5) can be retracted to align with the first material drop opening (101) or the second material drop opening (102) for feeding, characterized in that: The blanking opening shielding device comprises: A shielding mechanism (1), the shielding mechanism (1) being movably arranged on the first conveying platform (100); A push-pull mechanism (2), one end of the push-pull mechanism (2) is connected to the shielding mechanism (1), and the other end is connected to the telescopic head (51) of the conveyor belt; the push-pull mechanism (2) comprises a first push-pull member (21) and a second push-pull member (22); the second push-pull member (22) is provided with a first limiting structure (23) and a second limiting structure (24), and the first push-pull member (21) is cooperatively arranged between the first limiting structure (23) and the second limiting structure (24); the push-pull mechanism (2) is used to drive the first push-pull member (21) through the telescopic head (51) of the conveyor belt so that the first push-pull member (21) contacts with the first limiting structure (23) to push the shielding mechanism (1) to move and open the second blanking opening (102); the push-pull mechanism (2) is also used to drive the first push-pull member (21) through the telescopic head (51) of the conveyor belt so that the first push-pull member (21) contacts with the second limiting structure (24) to pull the shielding mechanism (1) to move and cover the second blanking opening (102).

2. The blanking opening shielding device according to claim 1, characterized in that: The first push-pull member (21) is a pull ring, the second push-pull member (22) is a push-pull rod, the push-pull rod is provided with the first limiting structure (23) and the second limiting structure (24), the pull ring is sleeved on the push-pull rod and the pull ring is located between the first limiting structure (23) and the second limiting structure (24); The pull ring is arranged on the telescopic head (51) of the conveyor belt, one end of the push-pull rod is fixedly arranged on the guard mechanism (1), and the other end is cooperatively connected with the pull ring; or, the pull ring is arranged on the guard mechanism (1), one end of the push-pull rod is arranged on the telescopic head (51) of the conveyor belt, and the other end is cooperatively connected with the pull ring.

3. The blanking opening shielding device according to claim 2, characterized in that: The pull ring is arranged on the telescopic head (51) of the conveyor belt, one end of the push-pull rod is fixedly arranged on the guard mechanism (1), and the other end is cooperatively connected with the pull ring, the first limiting structure (23) is arranged close to the guard mechanism (1), and the second limiting structure (24) is arranged close to the telescopic head (51) of the conveyor belt.

4. The blanking opening shielding device according to any one of claims 1 to 3, characterized in that: It also comprises a track (4), wherein the track (4) is arranged on the first conveying platform (100), the extension direction of the track (4) is consistent with the extension direction of the conveyor belt extension head (51), and the shielding mechanism (1) is movably arranged on the track (4).

5. The blanking opening shielding device according to claim 4, characterized in that: The two rails (4) are respectively arranged on both sides of the second material drop opening (102), and the shielding mechanism (1) is movably arranged on the two rails (4); and / or the length of the rail (4) is at least twice the length of the shielding mechanism (1).

6. The blanking opening shielding device according to claim 4, characterized in that: The shielding mechanism (1) comprises a shielding body (11) and a roller (12); the shielding body (11) is used to cover the second material drop opening (102); and the shielding body (11) is moved onto the track (4) via the roller (12).

7. The blanking opening shielding device according to claim 4, characterized in that: It also includes a baffle (7), which is arranged at one end of the track (4) away from the telescopic head (51) of the conveyor belt, and when the telescopic head (51) of the conveyor belt is located at the second drop-out opening (102), the baffle (7) abuts against the shielding mechanism (1) to limit the movement of the shielding mechanism (1) in a direction away from the telescopic head (51) of the conveyor belt.

8. The blanking opening shielding device according to any one of claims 1 to 3, characterized in that: It also includes a connecting structure (3), wherein two push-pull mechanisms (2) are provided, and the two push-pull mechanisms (2) are respectively located on both sides of the width direction of the conveyor belt telescopic head (51), and the second push-pull members (22) of the two push-pull mechanisms (2) are respectively connected to the connecting structure (3), and the connecting structure (3) is connected to the guarding mechanism (1).

9. The blanking opening shielding device according to claim 8, characterized in that: The connecting structure (3) comprises a cross bar (31) and a vertical bar (32); the cross bar (31) is fixedly connected between the two second push-pull members (22); and the portion of the cross bar (31) between its two ends is connected to the shielding mechanism (1) via the two vertical bars (32).

10. A material conveying system, characterized in that: It comprises a material drop opening shielding device as described in any one of claims 1 to 9.

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