CFB boiler coal feeding line leaked material returning device

Abstract

The utility model discloses a CFB (circulating fluid bed) boiler coal feeding line leaked material returning device which is arranged on one side of a transmission belt and comprises a guide rail, a hopper and a material trolley, and the material trolley is arranged on the guide rail and moves in the guide direction of the guide rail; the guide rail is provided with a feeding station located at the lower end portion and a discharging station located at the upper end portion, the material trolley comprises a discharging port, the discharging port can be opened and closed, in the using process, when the material trolley is stopped at the feeding station at the bottom, a worker loads leaked coal into the material trolley, then the material trolley moves to the discharging station, and the discharging port can be opened and closed. At the moment, the materials in the material trolley can be discharged into the hopper, and the leaked coal in the material trolley returns to the feeding station again after being discharged, so that the leaked coal can be conveniently collected next time; through the arrangement mode, leaked materials can be collected nearby by combining with manpower, and compared with a mode of adopting a spiral material suction device, the manual treatment mode is more thorough.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler coal feeding technical field especially relates to a CFB boiler coal feeding line material leakage back feeding device. BACKGROUND

[0002] In the current CFB (circulating fluidized bed) boiler operation, complex boiler operation environment, equipment wear and tear, design defects and various factors can cause coal leakage in the storage and conveying process, these leaked coal not only reduces the combustion efficiency of the boiler, but also can cause pollution and damage to the surrounding environment and equipment.

[0003] The traditional material leakage recovery method includes two kinds: one is completely dependent on manual, uses the shovel to manually gather the leakage material, and through the chute to transport the leakage material to the car and pour back to the coal shed, another method is to automatically return the leakage material through the motor driven spiral suction material device; completely dependent on manual, using the shovel to manually gather the leakage material, and through the automobile transportation to pour back to the coal shed, this method not only is inefficient, consumes a lot of manpower. Another method has improved, automatically returns the leakage material through the motor driven spiral suction material device, but when facing a small amount of leakage material, its suction efficiency is obviously reduced, and even may not be able to effectively work, resulting in resource waste and efficiency bottleneck. SUMMARY

[0004] The utility model aims at solving above-mentioned problem and provides a CFB boiler coal feeding line material leakage back feeding device.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a CFB boiler coal feeding line material leakage back feeding device is arranged on one side of the transmission belt and comprises:

[0006] The guide rail is inclinedly arranged.

[0007] The hopper is arranged above the transmission belt and at the upper end of the guide rail.

[0008] The material trolley is arranged on the guide rail and moves along the guide direction of the guide rail.

[0009] The guide rail is provided with a feeding station at the lower end and a discharging station at the upper end, and the material trolley comprises a discharge port which can be opened and closed.

[0010] Further, the first wheel and the second wheel are arranged at the two ends of the guide rail, the transmission member is arranged on the first wheel and the second wheel, the two ends of the transmission member are connected with the material trolley, and the middle region of the transmission member is drivingly connected with the driving motor.

[0011] Further, the transmission member comprises two parallel and spaced transmission members, and the two transmission members are arranged at the two sides of the material trolley.

[0012] Further, a baffle plate is arranged along the guiding direction of the guide rail, the bottom of the material trolley is provided with a first discharging hopper, the upper end of the baffle plate is provided with a second discharging hopper corresponding to the first discharging hopper, and the second discharging hopper is located above the hopper.

[0013] Further, the hopper is connected with the guide rail.

[0014] Further, the driving motor is drivingly connected with a driving shaft, and two power wheels are arranged on the driving shaft and correspond to the two driving members.

[0015] Further, two matching wheels are arranged on the two sides of each power wheel, the two matching wheels are located on the side of the power wheel close to the first working line, and the first working line is a connecting line connecting the first wheel shaft center and the second wheel shaft center.

[0016] Further, the first wheel, the second wheel and the driving wheel are all belt wheels, and the transmission member is a transmission belt.

[0017] Or, the transmission member is a transmission chain, and the first wheel, the second wheel and the driving wheel are all chain wheels.

[0018] Further, the side of the first discharging hopper away from the discharging station is provided with a shielding baffle plate in a guiding mode with the baffle plate, the shielding baffle plate is vertically provided with a rigid plate, the first discharging hopper is arranged on a guiding surface matched with the rigid plate and located above the shielding baffle plate, and an elastic member for applying an elastic force downward to the shielding baffle plate is further arranged.

[0019] Further, a guiding plate is arranged on the first discharging hopper, the guiding plate is provided with at least one guiding rod in a guiding mode along a direction perpendicular to the baffle plate, the lower end of the guiding rod is provided with a limiting plate, the elastic member is a compression spring sleeved on the guiding rod, the two ends of the compression spring are respectively in abutment with the guiding plate and the limiting plate, and the lower end of the guiding rod is in abutment with the shielding baffle plate.

[0020] Compared with the prior art, the CFB boiler coal feeding line material leakage returning device has the following beneficial effects: when the material trolley is stopped at the feeding station at the bottom, the workers load the leaked coal into the material trolley, then the material trolley moves to the discharging station, at this time, the material in the material trolley can be discharged into the hopper, after the leaked coal in the material trolley is discharged, the material trolley returns to the feeding station again, and the leaked coal is conveniently collected next time; through the arrangement mode, the leaked material can be collected by workers nearby, and compared with the mode of using a spiral material suction device, the manual processing mode is more complete. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 FIG. 4 is a side view of the material trolley in the CFB boiler coal feeding line material leakage returning device of the utility model and shows the structure of the material trolley at the discharging station.

[0022] Figure 2 It is side view structural schematic drawing of material trolley in the CFB boiler coal feeding line material leakage returning device in the loading station.

[0023] Figure 3 It is overall structure schematic of the CFB boiler coal feeding line material leakage returning device of the utility model Figure 1 .

[0024] Figure 4 It is Figure 3 The utility model discloses a CFB boiler coal feeding line material leakage returning device partial enlarged structure schematic drawing of A place in it.

[0025] Figure 5 It is overall structure schematic of the CFB boiler coal feeding line material leakage returning device of the utility model Figure 2 .

[0026] Figure 6 It is Figure 5 The utility model discloses a CFB boiler coal feeding line material leakage returning device partial enlarged structure schematic drawing of B place in it.

[0027] Figure 7 It is overall structure schematic of the CFB boiler coal feeding line material leakage returning device of the utility model Figure 3 .

[0028] Figure 8 It is overall structure schematic of the CFB boiler coal feeding line material leakage returning device of the utility model Figure 4 .

[0029] Figure 9 It is Figure 8 The utility model discloses a CFB boiler coal feeding line material leakage returning device partial enlarged structure schematic drawing of C place in it.

[0030] Figure 10 It is Figure 9 The utility model discloses a CFB boiler coal feeding line material leakage returning device partial enlarged structure schematic drawing of D place in it.

[0031] In the drawing: 10, support;11, guide rail;110, guide groove;116, side plate;12, material trolley;120, first discharge hopper;121, connecting piece;122, first roller;123, second roller;126, guide surface;127, guide plate;128, guide rod;129, compression spring;1280, ball head;13, hopper;14, detection device;15, transmission part;151, motor;1510, driving shaft;152, first wheel;153, power wheel;154, matching wheel;155, second wheel;16, baffle;161, second discharge hopper;18, shielding plate;180, groove;181, rigid plate;2, conveyer belt. DETAILED DESCRIPTION

[0032] The utility model will be explained in further detail in combination with the drawings. The drawings are simplified schematic diagrams which only schematically show the basic structure of the utility model and thus only show the components related to the utility model.

[0033] Embodiment one

[0034] Please refer to Figures 1-8 The technical scheme of the utility model is as follows: a coal leakage returning device for a CFB boiler coal feeding line is arranged on one side of a transmission belt and comprises:

[0035] A guide rail 11 is arranged obliquely.

[0036] A hopper 13 is arranged above the transmission belt and at the upper end of the guide rail 11.

[0037] A material trolley 12 is arranged on the guide rail and moves along the guide direction of the guide rail 11. The guide rail 11 is provided with a feeding station at the lower end and a discharging station at the upper end. The material trolley 12 comprises a discharge port which can be opened and closed.

[0038] Specifically, it should be noted that the coal feeding of the boiler is transported through the transmission belt. A coal bunker is arranged above the transmission belt 2. The returning device provided in the application is arranged on one side of the transmission belt 2 and close to the coal bunker. Specifically, it comprises two guide rails 11 which are arranged in parallel and at intervals. The guide rail 11 is supported by a support 10. As an implementation form, the guide rail 11 is formed by lateral grooves 180 of steel, and the openings of the two grooves 180 of steel face each other. The material trolley 12 comprises a first roller 122 which rolls with the upper surface of the guide rail 11 and a second roller 123 which cooperates with the opening of the groove 180 of steel. The second roller 123 is limited by the groove 180 of steel, which can ensure that the material trolley 12 travels stably on the guide rail 11. The material trolley 12 comprises a discharge port. When the material trolley 12 is at the feeding station, the discharge port is closed. When the material trolley 12 is at the discharging station, the discharge port is opened to guide the material in the material trolley 12 into the hopper 13. Figure 4 Figure 1 Figure 2 When the material trolley 12 is at the feeding station at the bottom, the staff can load the coal leakage into the material trolley 12. Then the material trolley 12 moves to the discharging station as shown in FIG. 6. At this time, the material in the material trolley 12 can be discharged into the hopper 13. After the coal leakage in the material trolley 12 is discharged, the material trolley 12 returns to the feeding station again, which is convenient for collecting the coal leakage next time. Through this arrangement, the staff can collect the coal leakage nearby, and compared with the spiral material suction device, the manual processing method is more thorough. Figure 1

[0039] ​​​Specifically, as a preferred embodiment, the hopper 13 can be provided as a funnel, and the material is directly guided through the hopper 13 to directly drop onto the conveyor belt.

[0040] As another alternative embodiment, the hopper 13 can be provided as a storage hopper 13 with a baffle 16 at the lower end outlet, which can temporarily store the material introduced into the hopper 13 from the material trolley 12. When the conveyor belt is working, the baffle 16 on the hopper 13 is opened, and the material temporarily stored in the hopper 13 is guided to fall onto the conveyor belt.

[0041] Further, as a specific embodiment, referring to Figures 1-9 The first wheel 152 and the second wheel 155 are provided at both ends of the guide rail 11 and between the two guide rails 11. The transmission member 15 is wound around the first wheel 152 and the second wheel 155. The two ends of the transmission member 15 are connected to the material trolley 12. The middle region of the transmission member 15 is drivingly connected to the driving motor 151.

[0042] Specifically, the first wheel 152 and the second wheel 155 are provided at both ends of the guide rail 11 and between the two guide rails 11. The transmission member 15 is wound around the first wheel 152 and the second wheel 155. The two ends of the transmission member 15 are connected to the material trolley 12. Specifically, the lower surface of the material trolley 12 is provided with a connecting member 121, and the two ends of the transmission member 15 are connected to the connecting member 121. Referring to Figure 7 、 Figure 8 In the guide direction, the middle region of the guide rail 11 is provided with the motor 151. The motor 151 is drivingly connected to a driving shaft 1510. The driving shaft 1510 is provided with a power wheel 153. The power wheel 153 is drivingly connected to the transmission member 15. Through this arrangement, the motor 151 can drive the transmission member 15 to move, thereby pulling the material trolley 12 to move on the guide rail 11. For example, when the motor 151 rotates forward, the material trolley 12 is driven to move towards the top of the guide rail 11. When the motor 151 reverses, the material trolley 12 is pulled to move towards the lower end of the guide rail 11.

[0043] Further, as a preferred embodiment, a detection device 14 is arranged at the upper end of the guide rail 11, when the material trolley 12 reaches the material dispensing station of the guide rail 11, the material trolley 12 contacts the detection device 14, the detection device 14 is triggered, the detection device 14 is connected with a control device, the control device is connected with the motor 151, wherein the detection device 14 can be selected from any one of a proximity switch and a micro switch, the control device adopts a device commonly used in the prior art, which is not specifically limited here, and those skilled in the art should understand that when the material trolley 12 reaches the material dispensing station, the detection device 14 is triggered, then the control device controls the motor 151 to stop and keep the position, and the material in the material trolley 12 is discharged, after keeping the current position for a certain time, the motor 151 is unlocked, the rotating direction is switched, and the material trolley 12 returns to the material loading station, and the motor 151 stops. It should be noted that the motor 151 can adopt an electronic braking technology commonly used in the prior art, such as electromagnetic locking.

[0044] Further, as a preferred embodiment, the transmission member 15 includes two parallel and spaced transmission members, and the two transmission members 15 are arranged on the two sides of the material trolley 12. Specifically, by arranging two transmission members 15, the two transmission members 15 can synchronously drive the two sides of the material trolley 12, thereby improving the stability of driving the material trolley 12.

[0045] Further, as a specific embodiment, a baffle 16 is arranged along the guide direction of the guide rail 11, the bottom of the material trolley 12 is provided with a first discharge hopper 120, the upper end of the baffle 16 is provided with a second discharge hopper 161 corresponding to the first discharge hopper 120, and the second discharge hopper 161 is located above the hopper 13.

[0046] Specifically, the baffle 16 is a rectangular plate made of steel plate, plastic plate or the like, and is arranged between the two guide rails 11. The bottom of the material trolley 12 is provided with a first discharge hopper 120, and the discharge port is a lower opening of the first discharge hopper 120. In the area other than the material dispensing station, the baffle 16 can shield the lower opening of the first discharge hopper 120. The second discharge hopper 161 is arranged at the upper end of the baffle 16. When the material trolley 12 moves to the material dispensing station, the lower opening of the first discharge hopper 120 corresponds to the upper opening of the second discharge hopper 161 and is in communication. At this time, the material in the material trolley 12 can be discharged under the action of gravity.

[0047] Further, as a preferred embodiment, the hopper 13 is connected with the guide rail 11. Specifically, when the hopper 13 is a guide hopper, the hopper 13 and the guide rail 11 can be detachably fixedly connected. Through this arrangement, the recycling device is arranged as an integral structure, and when the conveying belt 2 is maintained, the recycling device can be moved together, thereby facilitating the relative position of the hopper 13 and the second discharge hopper 161, and facilitating use.

[0048] Further, as a specific embodiment, referring to Figure 7 , the driving motor 151 is drivingly connected with a driving shaft 1510, and two power wheels 153 are arranged on the driving shaft 1510 corresponding to the two driving members. Specifically, the driving motor 151 drives the driving shaft 1510, and the driving shaft 1510 drives the two power wheels 153, and the two power wheels 153 can rotate synchronously, thereby synchronously driving the two transmission members 15, and improving the stability of driving.

[0049] Further, as a specific embodiment, two matching wheels 154 are arranged on each power wheel 153, and the two matching wheels 154 are located on the side of the power wheel 153 close to the first working line, and the first working line is a connecting line connecting the axis of the first wheel 152 and the axis of the second wheel 155. Specifically, by arranging the two matching wheels 154, the transmission member 15 can be better drivingly connected with the power wheel 153, and effective transmission is ensured.

[0050] Further, as a specific embodiment, the first wheel 152, the second wheel 155 and the driving wheel are all belt wheels, and the transmission member 15 is a transmission belt.

[0051] Further, as another implementable embodiment, the transmission member 15 is a transmission chain, and the first wheel 152, the second wheel 155 and the driving wheel are all sprocket wheels.

[0052] Embodiment two

[0053] The technical scheme of the utility model discloses a CFB boiler coal feeding line material leakage recycling device, which is further improved and differs from embodiment one in that Figure 9 、 Figure 10 The first discharge hopper 120 is arranged on the guide surface 126 matched with the rigid plate 181 and located above the shielding plate 18, and further comprises an elastic member for applying elastic force downward to the shielding plate 18.

[0054] Specifically, the guide surface 126 is arranged vertically to the baffle 16, the shielding plate 18 is arranged, and the shielding plate 18 is attached to the baffle 16 through the elastic force of the elastic member. Through the arrangement mode, when the material trolley 12 moves to the discharging station, there is a certain error in positioning, and the first discharging hopper 120 and the second discharging hopper 161 have a certain positional deviation. At this time, there is a gap between the side of the first discharging hopper 120 close to the discharging station and the inlet of the second discharging hopper 161, and the coal material has a risk of leaking from the gap. Through the arrangement of the shielding plate 18, the gap can be shielded when it appears, and material leakage is avoided.

[0055] Further, as a preferred embodiment, referring to Figure 9 、 Figure 10 , the first discharging hopper 120 is provided with a guide plate 127 in a direction perpendicular to the baffle 16, at least one guide rod 128 is arranged on the guide plate 127 in a guide mode, the lower end of the guide rod 128 is provided with a limiting plate, the elastic member is a compression spring 129 sleeved on the guide rod 128, the two ends of the compression spring 129 abut against the guide plate 127 and the limiting plate respectively, and the lower end of the guide rod 128 abuts against the shielding plate 18. Specifically, the guide plate 127 is welded on the side wall of the first discharging hopper 120, the guide rod 128 is arranged on the guide plate 127 in a guide mode, the upper surface of the shielding plate 18 is provided with a groove 180, and the lower end of the guide rod 128 can be inserted into the groove 180 under the elastic force of the compression spring 129 to press and position the shielding plate 18. Preferably, the end of the guide rod 128 is provided with a ball head 1280, and the groove 180 adopts a semispherical groove 180 matched with the ball head.

[0056] Obviously, the above embodiments are only examples for clearly illustrating, but not limiting the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A coal line leakage return device of a CFB boiler, which is arranged on one side of a transmission belt, characterized in that, The utility model relates to a material conveying device, including: A guide rail (11) is arranged obliquely; A hopper (13) is arranged above the transmission belt and at the upper end of the guide rail (11); A material trolley (12) is arranged on the guide rail and moves along the guide direction of the guide rail (11); The guide rail (11) is provided with a feeding station at the lower end and a discharging station at the upper end, and the material trolley (12) comprises a discharge port which can be opened and closed.

2. The coal leakage return device for the coal feeding line of the CFB boiler according to claim 1, characterized in that, First wheels (152) and second wheels (155) are arranged at both ends of the guide rail (11), transmission members (15) are arranged on the first wheels (152) and the second wheels (155), both ends of the transmission members (15) are connected with the material trolley (12), and a driving motor (151) is drivingly connected to the middle region of the transmission members (15).

3. A coal leakage return device for a coal feed line of a CFB boiler according to claim 2, characterized in that, The transmission members (15) are arranged in parallel and are spaced apart, and the two transmission members (15) are arranged on both sides of the material trolley (12).

4. The coal leakage return device for the coal feeding line of the CFB boiler according to claim 1, characterized in that, A baffle (16) is arranged along the guide direction of the guide rail (11), the bottom of the material trolley (12) is provided with a first discharge hopper (120), the upper end of the baffle (16) is provided with a second discharge hopper (161) corresponding to the first discharge hopper (120), and the second discharge hopper (161) is located above the hopper (13).

5. A coal leakage return device for a coal feed line of a CFB boiler according to claim 2 or 4, characterized in that, The hopper (13) is connected with the guide rail (11).

6. A coal leakage return device for a coal feed line of a CFB boiler according to claim 3, characterized in that, The driving motor (151) is drivingly connected with a driving shaft (1510), and two power wheels (153) are arranged on the driving shaft (1510) corresponding to the two driving members.

7. A coal leakage return device for a coal feed line of a CFB boiler according to claim 6, characterized in that, Cooperating wheels (154) are arranged on both sides of each power wheel (153), and the two cooperating wheels (154) are located on the side of the power wheel (153) close to the first working line, which is a connecting line connecting the axis centers of the first wheel (152) and the second wheel (155).

8. A coal leakage return device for a coal feed line of a CFB boiler according to claim 6, characterized in that, The first wheel (152), the second wheel (155) and the driving wheel are all belt wheels, and the transmission member (15) is a transmission belt. Alternatively, the transmission member (15) is a transmission chain, and the first wheel (152), the second wheel (155) and the driving wheel are all chain wheels.

9. A coal leakage return device for a coal feed line of a CFB boiler according to claim 4, characterized in that, A shielding baffle (18) is arranged on the side of the first discharge hopper (120) away from the discharging station and guided by the baffle (16), the shielding baffle (18) is arranged perpendicularly to a rigid plate (181), the first discharge hopper (120) is arranged on a guide surface (126) matched with the rigid plate (181) and located above the shielding baffle (18), and an elastic member is further arranged to apply an elastic force downward to the shielding baffle (18).

10. A coal leakage return device for a coal feed line of a CFB boiler according to claim 9, characterized in that, A guide plate (127) is arranged on the first discharge hopper (120), at least one guide rod (128) is arranged on the guide plate (127) in a direction perpendicular to the baffle (16), a limiting plate is arranged at the lower end of the guide rod (128), the elastic member is a compression spring (129) sleeved on the guide rod (128), the two ends of the compression spring (129) abut against the guide plate (127) and the limiting plate respectively, and the lower end of the guide rod (128) abuts against the shielding baffle (18).

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