An adjustable screening mid-chamber

Abstract

The application discloses an adjustable screening middle trough and belongs to the technical field of coal transportation, which comprises a middle plate, which is detachably arranged between two groups of sidewalls of the trough and is used for supporting coal, and an insertion groove matched with the middle plate is arranged at the inner wall of the sidewall; a driving shaft is connected with the middle plate and is used for adjusting the position of the middle plate relative to the sidewall in the vertical direction; in the process that the driving shaft drives the distribution pipe to rotate through the first transmission unit, the coal cinder in the distribution pipe can be thrown out through the distribution hole and be located between the sidewall of the insertion groove, the middle plate and the sealing plate; with the gradual increase of the coal cinder, the middle plate can be stably supported; compared with the existing device which supports the rising middle plate through additional cushion blocks and other structures, the coal layer formed between the bottom wall of the insertion groove and the middle plate can support the middle plate in all directions along the length direction of the middle plate.

Description

Technical Field

[0001] This invention relates to the field of coal transportation technology, and in particular to an adjustable screening trough. Background Technology

[0002] The central trough is a core component of conveying equipment such as scraper conveyors and transfer conveyors, and is closely related to the operation of the entire conveying system. The central trough mainly achieves the carrying and conveying of materials by cooperating with the movement of the scraper chain.

[0003] In traditional devices, the middle plate is welded to the side of the channel, which means that the entire middle channel can only be removed during replacement. In some current middle channel structures, the middle plate is detachably connected to the side of the channel. This allows for adjustment of the position of the middle plate and facilitates its replacement. However, in actual use, when the middle plate is adjusted upward relative to the side of the channel, the bottom of the middle plate is not adequately supported, resulting in a lack of structural stability and making it unsuitable for long-term use.

[0004] Therefore, it is necessary to provide an adjustable screening center trough to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide an adjustable screening center trough to solve the problem mentioned in the background art that in the existing center trough structure, after the center plate is adjusted upward relative to the trough side, the bottom of the center plate is not adequately supported, resulting in a lack of structural stability of the center plate.

[0006] Based on the above ideas, the present invention provides the following technical solution: an adjustable screening center groove, comprising:

[0007] A middle plate is detachably installed between two sets of sidewalls to support the coal. The inner wall of the sidewalls is provided with slots that mate with the middle plate.

[0008] A drive shaft, connected to the middle plate, is used to adjust the position of the middle plate relative to the groove side in the vertical direction;

[0009] The material distribution pipe passes through the middle plate and is movably engaged with the middle plate. When the drive shaft drives the middle plate to move upward, leaving space between the middle plate and the bottom wall of the slot, the material distribution pipe rotates synchronously as the drive shaft drives the material distribution pipe. During this process, the coal slag entering the material distribution pipe can be dispersed between the bottom wall of the slot and the middle plate to support the middle plate.

[0010] As a further aspect of the present invention: the material distribution pipe is provided in multiple sets, and two adjacent sets of material distribution pipes are connected by a second transmission unit, and the drive shaft is connected to its adjacent material distribution pipe by a first transmission unit.

[0011] As a further aspect of the present invention: a sealing plate is provided on the side of the trough to cooperate with the distribution pipe. The sealing plate is attached to the top end face of the distribution pipe. Multiple through holes are evenly opened on the surface of the sealing plate. Multiple feed holes are evenly opened on the top end face of the distribution pipe. When the through holes and feed holes are aligned, the coal slag can enter the distribution pipe. Multiple distribution holes for coal slag to be discharged are evenly opened on the outer circumference of the distribution pipe.

[0012] As a further aspect of the present invention: a sealing plate is fixedly installed at the bottom of the middle plate, and the sealing plate fits against the inner wall of the slot side to seal the slag between the bottom wall of the slot and the middle plate.

[0013] As a further embodiment of the present invention: a pressure plate is connected to one end of the drive shaft that passes through the groove side upwards. The bottom of the pressure plate is chamfered. A rack is fixedly installed on the scraper. A top pressing member that cooperates with the pressure plate is fixedly connected to the top of the rack. A gear that meshes with the rack is fixedly sleeved on the outside of the drive shaft.

[0014] As a further embodiment of the present invention: a baffle is fixedly provided on the top wall of the slot, and a strip groove aligned with the baffle is opened on the top surface of the middle plate.

[0015] As a further aspect of the present invention: the two drive shafts located on the groove side are staggered along the length direction of the groove side, so that the top pressure members on the two scrapers can contact the pressure plate simultaneously.

[0016] As a further aspect of the present invention: the top pressing member has a columnar structure, and a ball bearing is installed at the top of the top pressing member.

[0017] As a further embodiment of the present invention: a protrusion is fixed on the side of the middle plate, and the drive shaft is fixedly connected to the protrusion.

[0018] As a further aspect of the present invention: the protrusion passes through a pre-set slot on the groove side and the protrusion is movable in the vertical direction relative to the groove side.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: during the process of the drive shaft driving the distribution pipe to rotate through the first transmission unit, the coal slag located in the distribution pipe can be thrown out through the distribution hole and placed between the slot wall, the middle plate and the sealing plate. As the amount of coal slag gradually increases, it can provide stable support for the middle plate. Compared with the existing device that uses additional pads or other structures to support the middle plate after it rises, this solution utilizes the coal layer formed between the bottom wall of the slot and the middle plate to provide all-round support for the middle plate along the length of the middle plate, thereby maximizing the stability of the middle plate. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the engagement between the protrusion and the groove of the present invention;

[0023] Figure 3 This is a schematic diagram of the groove and scraper structure of the present invention;

[0024] Figure 4 This is a diagram showing the distribution of the sealing discs in this invention;

[0025] Figure 5 This is a schematic diagram of the material distribution pipe and the middle plate of the present invention;

[0026] Figure 6 This is a distribution diagram of the second transmission unit of the present invention;

[0027] Figure 7 This is the present invention. Figure 2 A magnified structural diagram at point A;

[0028] Figure 8 This is the present invention. Figure 3 A magnified structural diagram at point B;

[0029] Figure 9 This is the present invention. Figure 4 A magnified structural diagram at point C.

[0030] In the diagram: 1. Groove side; 2. Scraper; 3. Middle plate; 301. Protrusion; 302. Sealing plate; 4. Base plate; 5. Drive shaft; 6. Pressure plate; 601. Chamfer; 7. Gear; 8. Rack; 801. Top pressing component; 9. Sealing plate; 901. Through hole; 10. First transmission unit; 11. Adjusting rod; 12. Distributor pipe; 1201. Distributor hole; 1202. Feed hole; 13. Baffle; 14. Protrusion; 15. Second transmission unit; 16. Positioning block; 17. Slot. Detailed Implementation

[0031] like Figures 1-9 As shown, an adjustable screening trough includes two sets of trough sides 1, with a middle plate 3 and a bottom plate 4 disposed between the two sets of trough sides 1. In actual use, the middle plate 3 is used to support the coal. Specifically, a chain drives a scraper 2 to move on top of the middle plate 3 to transport the coal.

[0032] In traditional central trough structures, both the bottom plate 4 and the middle plate 3 are welded to the trough side 1. During use, when the middle plate 3 is severely worn, the entire central trough often needs to be replaced, which makes the operation difficult. However, in the existing device, the middle plate 3 is detachably connected to the trough side 1. Therefore, when the middle plate 3 is worn, only the middle plate 3 needs to be replaced.

[0033] In addition, since the middle plate 3 and the groove side 1 are detachably connected, the position of the middle plate 3 relative to the groove side 1 can be adjusted. When the upper surface of the middle plate 3 is worn, the position of the damaged middle plate 3 in the vertical direction can be adjusted so that the two adjacent middle plates 3 are aligned as much as possible, thereby reducing the resistance encountered by the scraper 2 during movement.

[0034] In practical applications, the middle plate 3 can be equipped with screen holes. When the coal moves under the push of the scraper 2, materials smaller than the screen hole size will fall through the screen hole under the action of gravity, while materials larger than the screen hole size will continue to be conveyed forward with the scraper 2. In addition, when the coal is relatively wet, the moisture can also be filtered through the screen holes.

[0035] In conventional setups, bolts can be used to connect the middle plate 3 and the groove side 1, allowing the middle plate 3 to be adjusted relative to the groove side 1. However, in actual use, after the middle plate 3 moves upward relative to the groove side 1, only the bolts support and limit the middle plate 3, resulting in a lack of stability in the structure of the entire middle plate 3. Based on this, this solution provides slots 17 that mate with the middle plate 3 on the opposite side of both sets of groove sides 1, so that both sides of the middle plate 3 can be inserted into the slots 17.

[0036] Furthermore, combined Figures 1-3 , Figures 6-7 As shown, a protrusion 301 is welded to the side of the middle plate 3. The protrusion 301 passes through a pre-set slot on the groove 1 and can move vertically relative to the groove 1 to adjust the position of the middle plate 3 relative to the groove 1. A drive shaft 5 is fixedly installed at the protrusion 301. The drive shaft 5 passes upward through the groove 1 and is movably engaged with the groove 1, so that the drive shaft 5 can slide and rotate relative to the groove 1.

[0037] To provide stable support for the raised middle plate 3, multiple feed pipes 12 are arranged along the length of the sidewall 1. Adjacent feed pipes 12 are connected by a second transmission unit 15, enabling them to rotate synchronously. The drive shaft 5 is connected to one of the feed pipes 12 by a first transmission unit 10. During the rotation of the feed pipe 12 relative to the sidewall 1, some coal slag or coal powder between the sidewall 1 and the middle plate 3 can enter the feed pipe 12 and eventually disperse between the bottom of the middle plate 3 and the bottom wall of the slot 17 to support the middle plate 3, thereby improving the stability of the middle plate 3.

[0038] Specifically, the channel side 1 is provided with a sealing disc 9 that cooperates with the distribution pipe 12. The sealing disc 9 is attached to the top end face of the distribution pipe 12, and in combination with... Figure 9As shown, the sealing plate 9 has multiple through holes 901 evenly distributed on its surface, while the top end face of the distribution pipe 12 has multiple feed holes 1202 evenly distributed.

[0039] In the initial state, the through hole 901 and the feed hole 1202 are staggered to prevent external coal slag from entering the distribution pipe 12. When the drive shaft 5 drives the distribution pipe 12 to rotate through the first transmission unit 10, the coal slag can enter the distribution pipe 12 when the through hole 901 and the feed hole 1202 are aligned.

[0040] Combined again Figure 9 As shown, a plurality of material distribution holes 1201 are evenly distributed on the outer circumferential surface of the material distribution pipe 12, and a circular hole is provided on the middle plate 3 for the material distribution pipe 12 to pass through. Initially, the material distribution hole 1201 is located inside the circular hole.

[0041] During use, when the middle plate 3 moves upward relative to the sidewall 1 and the drive shaft 5 drives the distribution pipe 12 to rotate through the first transmission unit 10, some coal slag located between the sidewall 1 and the middle plate 3 can enter the distribution pipe 12. During the rotation of the distribution pipe 12, the coal slag located in the distribution pipe 12 can be thrown out through the distribution hole 1201 and fall into the space between the bottom wall of the slot 17 and the middle plate 3. As the coal slag gradually increases between the bottom wall of the slot 17 and the middle plate 3 to form a coal layer, it can support the middle plate 3, thereby improving the stability of the middle plate 3.

[0042] Of course, in order to prevent the coal seam from falling out of the slot 17, a sealing plate 302 is fixedly installed at the bottom of the middle plate 3. The sealing plate 302 fits against the inner wall of the slot side 1 to seal the coal slag between the bottom wall of the slot 17 and the middle plate 3.

[0043] Working principle: When the surface of the middle plate 3 wears, the external drive assembly drives the drive shaft 5 to move upward, thereby driving the middle plate 3 to move upward synchronously, leaving a certain space between the middle plate 3 and the bottom wall of the slot 17. When the drive shaft 5 drives the distribution pipe 12 to rotate through the first transmission unit 10, aligning the feed hole 1202 with the through hole 901 on the sealing plate 9, the slag can enter the distribution pipe 12. Because the middle plate 3 moves upward relative to the distribution pipe 12 by a certain distance, some of the distribution holes 1201 on the distribution pipe 12 can move out of the circular hole, so that the drive shaft 5 drives the distribution pipe 12 to rotate through the first transmission unit 10. During the rotation, the coal slag in the distribution pipe 12 can be thrown out through the distribution hole 1201 and placed between the slot 17 wall, the middle plate 3 and the sealing plate 302. As the amount of coal slag gradually increases, it can provide stable support for the middle plate 3. In summary, compared with the existing device that uses additional pads and other structures to support the middle plate 3 after it rises, this solution uses the coal layer formed between the bottom wall of the slot 17 and the middle plate 3 to provide all-round support for the middle plate 3 along the length of the middle plate 3, thereby maximizing the stability of the middle plate 3. When two adjacent middle plates 3 are aligned, the scraper 2 can move more stably on the surface of the middle plate 3.

[0044] As a first embodiment of the drive assembly, a motor and hydraulic rod can be arranged on the outside of the groove 1. The motor drives the drive shaft 5 to rotate, and the hydraulic cylinder drives the motor and drive shaft 5 to move upward.

[0045] While the above embodiments are simple and reliable in structure, their actual deployment is cumbersome and costly. Therefore, this solution provides a second embodiment of the drive component:

[0046] A pressure plate 6 is connected to one end of the drive shaft 5 that passes through the groove 1. The pressure plate 6 can slide with the drive shaft 5, thereby adjusting the position of the pressure plate 6 on the drive shaft 5. Of course, screws or bolts are threaded on the outer circumferential surface of the pressure plate 6. Once the position of the pressure plate 6 relative to the drive shaft 5 is determined, the pressure plate 6 and the drive shaft 5 can be locked together by bolts or screws.

[0047] The bottom of the pressure plate 6 is provided with a chamfer 601, and the top two sides of the scraper 2 are both fixedly provided with racks 8 by brackets. The top of the racks 8 is fixedly connected with a top pressing member 801. When the chain drives the scraper 2 to move to one side of the pressure plate 6, the top pressing member 801 cooperates with the chamfer 601 at the bottom of the pressure plate 6 to drive the pressure plate 6 to move upward, thereby driving the drive shaft 5 and the middle plate 3 to move upward.

[0048] A gear 7 that meshes with a rack 8 is fixedly sleeved on the outer side of the drive shaft 5. The width of the rack 8 is greater than the height of the gear 7. (Refer to...) Figure 4As shown, the two drive shafts 5 located on the groove side 1 are staggered along the length of the groove side 1, so that the top pressing parts 801 on the two scrapers 2 can contact the pressure plate 6 at the same time, thereby stably driving the pressure plate 6 to move upward.

[0049] Working principle: When the chain drives the scraper 2 to move along the length of the middle plate 3, the rack 8 can move at the top of the groove side 1. When both sets of scrapers 2 move to one side of the pressure plate 6 at the same time, the pressing part 801 on the rack 8 and the chamfer 601 on the pressure plate 6 can push the pressure plate 6 upward, thereby driving the drive shaft 5 and the middle plate 3 upward. At the same time, the meshing of the rack 8 and the gear 7 can drive the drive shaft 5 to rotate, and then drive the material distribution pipe 12 to rotate through the first transmission unit 10. After the rack 8 passes the gear 7, the through hole 901 and the feed hole 1202 is repositioned. As mentioned above, the coal slag can be dispersed between the bottom wall of the slot 17 and the middle plate 3 to support the middle plate 3. In addition, when the top pressing component 801 and the pressure plate 6 are repositioned, the middle plate 3 can fall. During this process, the middle plate 3 can press the coal slag at the bottom wall of the slot 17 to make the coal slag more compact. As the chain drives the scraper 2 to move, the middle plate 3 can move back and forth in the vertical direction. By repeatedly squeezing the coal slag, the coal layer formed between the bottom wall of the slot 17 and the middle plate 3 can stably support the middle plate 3.

[0050] like Figures 1-9 As shown, the inner wall of the groove 1 is recessed inward to form a recessed part, while the two ends of the scraper 2 extend outward to form guide parts that cooperate with the recessed part. When the chain pulls the scraper 2 to move along the length direction of the middle plate 3, the guide parts are inserted into the recessed part, so that the scraper 2 can move stably along the groove 1. Since this is a commonly used technical means in the middle groove structure, the specific structure of the scraper 2 and the groove 1 will not be described in detail here.

[0051] Combination Figure 5 As shown, the bottom of the recess is a horizontal structure, and the sealing plate 302 is arranged on the horizontal surface of the recess. Specifically, the groove side 1 is provided with a through hole for installing the material distribution pipe 12, so that the material distribution pipe 12 is rotatably installed in the through hole and can only rotate relative to the groove side 1. The sealing plate 302 is fixed at the top position of the through hole and the top surface of the sealing plate 302 is flush with the bottom surface of the recess.

[0052] A baffle 13 is fixedly installed on the top wall of the slot 17 and on the outer side. A strip groove is opened on the top surface of the middle plate 3, which is aligned with the baffle 13. Initially, the bottom edge of the baffle 13 is inserted into the strip groove to prevent external coal slag from entering between the top wall of the slot 17 and the middle plate 3.

[0053] Both the first transmission unit 10 and the second transmission unit 15 can be chains or belts. The groove 1 is provided with an installation channel for accommodating the second transmission unit 15, and the first transmission unit 10 passes through a pre-set through groove on the groove 1.

[0054] Combination Figures 1-3 , Figure 7 As shown, in order to further improve the stability of the middle plate 3, the protrusion 301 is set as a T-shaped structure, so that the two sides of the protrusion 301 are protrusions 14, and a connecting plate is fixedly installed on the outer wall of the groove side 1. An adjusting rod 11 is rotatably connected to the connecting plate. The adjusting rod 11 passes through the protrusion 14 and slides with it. A positioning block 16 is threadedly connected to the outer side of the adjusting rod 11. The positioning block 16 is fitted to the outer wall of the groove side 1. In actual use, the operator can measure the thickness of the wear on the top of the middle plate 3. Assuming that the wear thickness is 5mm, the position of the pressure plate 6 can be adjusted downward by 5mm, and the adjusting rod 11 can be rotated to move the positioning block 16 upward by 5mm. Under these circumstances, the maximum distance that the top pressing component 801 can move the pressure plate 6 upward is 5mm. Later, the coal seam between the bottom wall of the slot 17 and the middle plate 3 can support the middle plate 3, so that the middle plate 3 is confined between the coal seam and the positioning block 16.

[0055] Combination Figure 8 As shown, the top pressure member 801 can be a columnar structure, and a ball bearing can be installed at the top of the top pressure member 801 to reduce the friction between the top pressure member 801 and the pressure plate 6.

[0056] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. An adjustable screening center groove, characterized in that, include: The middle plate (3) is detachably set between the two sets of sidewalls (1) for supporting the coal. The inner wall of the sidewalls (1) is provided with a slot (17) that cooperates with the middle plate (3). The drive shaft (5) is connected to the middle plate (3) and is used to adjust the position of the middle plate (3) relative to the groove (1) in the vertical direction; The material distribution pipe (12) passes through the middle plate (3) and is movably engaged with the middle plate (3). When the drive shaft (5) drives the middle plate (3) to move upward so that a space is left between the middle plate (3) and the bottom wall of the slot (17), the material distribution pipe (12) rotates synchronously driven by the drive shaft (5). The coal slag entering the material distribution pipe (12) can be dispersed between the bottom wall of the slot (17) and the middle plate (3) to support the middle plate (3). The material distribution pipe (12) is provided in multiple sets. Two adjacent sets of material distribution pipes (12) are connected by a second transmission unit (15). The drive shaft (5) is connected to its adjacent material distribution pipe (12) by a first transmission unit (10). The trough (1) is provided with a sealing plate (9) that cooperates with the distribution pipe (12). The sealing plate (9) is attached to the top end face of the distribution pipe (12). The surface of the sealing plate (9) is evenly provided with multiple through holes (901). The top end face of the distribution pipe (12) is evenly provided with multiple feed holes (1202). When the through holes (901) and the feed holes (1202) are aligned, the coal slag can enter the distribution pipe (12). The outer circumference of the distribution pipe (12) is evenly provided with multiple distribution holes (1201) for coal slag to be discharged. A sealing plate (302) is fixedly installed at the bottom of the middle plate (3). The sealing plate (302) fits against the inner wall of the groove side (1) to seal the slag between the bottom wall of the slot (17) and the middle plate (3).

2. The adjustable screening center groove according to claim 1, characterized in that: The drive shaft (5) passes through the groove (1) and is connected to a pressure plate (6). The pressure plate (6) slides with the drive shaft (5) to adjust the position of the pressure plate (6) on the drive shaft (5). The bottom of the pressure plate (6) is provided with a chamfer (601). A rack (8) is fixedly installed on the scraper (2). The top of the rack (8) is fixedly connected to a top pressing member (801) that cooperates with the pressure plate (6). A gear (7) that meshes with the rack (8) is fixedly sleeved on the outside of the drive shaft (5).

3. The adjustable screening center groove according to claim 1, characterized in that: A baffle (13) is fixedly installed on the top wall of the slot (17), and a strip groove is opened on the top surface of the middle plate (3) that is aligned with the baffle (13).

4. An adjustable screening center groove according to claim 2, characterized in that: The two drive shafts (5) located on the groove side (1) are staggered along the length of the groove side (1), so that the top pressure members (801) on the two scrapers (2) can contact the pressure plate (6) at the same time.

5. An adjustable screening center groove according to claim 2, characterized in that: The top pressure member (801) has a columnar structure, and a ball bearing is installed at the top of the top pressure member (801).

6. An adjustable screening center groove according to claim 1, characterized in that: The middle plate (3) has a protrusion (301) fixed on its side, and the drive shaft (5) is fixedly connected to the protrusion (301).

7. An adjustable screening center groove according to claim 6, characterized in that: The protrusion (301) passes through a pre-set slot on the groove (1) and the protrusion (301) is able to move in the vertical direction relative to the groove (1).

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