Multi-bin coal conveying device

Abstract

The utility model discloses a multi-bunker coal conveying device, which relates to the field of coal bunker coal conveying, and comprises a high-quality coal storage bunker and a low-quality coal storage bunker, one side of the high-quality coal storage bunker and one side of the low-quality coal storage bunker are respectively provided with a first auxiliary coal bunker and a second auxiliary coal bunker, and the top end of the first auxiliary coal bunker and the top end of the second auxiliary coal bunker are respectively provided with an anti-blocking coal shifting assembly. Bidirectional coal feeders are arranged at the bottom ends of the first auxiliary coal bunker and the second auxiliary coal bunker, coal feeders are arranged at the bottom ends of the high-quality coal storage bunker and the low-quality coal storage bunker, and limiting protection assemblies are arranged on one sides of the bidirectional coal feeders. By arranging the limiting protection assembly, when coal briquettes fall to the coal feeder or the two-way coal feeder, the limiting effect can be achieved under the action of the two sets of limiting protection plates, then the kinetic energy of the coal briquettes can be absorbed when the coal briquettes make contact with the limiting protection plates, and the impact force generated when the coal briquettes fall to a belt is reduced.

Description

Technical Field

[0001] The utility model relates to the field of coal transportation in coal bunkers, and in particular to a multi-bin coal transportation device. Background Art

[0002] With the increase in the proportion of new energy installed capacity, power plants actively participate in peak load regulation in order to increase the income from auxiliary services. The randomness and depth of peak load regulation are becoming increasingly difficult to predict. The price of long flame coal for stable combustion is high and it cannot be used all day. Therefore, during the period of deep peak load regulation, long flame coal is blended to achieve oil-free operation.

[0003] At present, the peak-shaving problem of power plants is the most pressing issue. Each unit is supplied with coal by a specific coal hopper, so the coal quality in the coal hopper of each unit is either high-quality coal or low-quality coal, which is specific. Therefore, when the unit operating conditions need to be changed quickly during peak and low-peak periods of electricity consumption, in order to be able to change the type of coal in time, accurately match coal, and cope with the rapid changes in unit load, a multi-bin coal conveying device will be used to realize coal transportation.

[0004] However, the coal conveying device in the prior art has the following defects: when in use, the coal in the coal bin mostly falls directly onto the belt of the coal feeder conveyor, and then the impact force generated when the coal blocks fall on the belt will increase the degree of wear of the belt, thereby reducing the service life of the belt in the coal feeder conveyor.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0006] In view of the problems in the related technology, the utility model proposes a multi-bin coal conveying device to overcome the above technical problems existing in the existing related technology.

[0007] To this end, the specific technical solutions adopted by the utility model are as follows:

[0008] A multi-bin coal conveying device comprises a high-quality coal storage bin and a low-quality coal storage bin, wherein a No. 1 auxiliary coal bin and a No. 2 auxiliary coal bin are respectively arranged on one side of the high-quality coal storage bin and the low-quality coal storage bin, and anti-blocking coal-moving components are arranged on the top of the No. 1 auxiliary coal bin and the No. 2 auxiliary coal bin, and two-way coal feeders are arranged at the bottom of the No. 1 auxiliary coal bin and the No. 2 auxiliary coal bin, and a limited position protection component is arranged on one side of the two-way coal feeder.

[0009] Furthermore, in order to enable the rapping action to be performed under the action of the flexible rapper, ensure that the stored coal at each position falls smoothly into the two-way coal feeder below, and ensure stability during use, a high-quality coal bin shut-off door is provided at the bottom of the high-quality coal storage bin, and a low-quality coal bin shut-off door is provided at the bottom of the low-quality coal storage bin. Flexible rappers are provided on the outer sides of the No. 1 auxiliary coal bin and the No. 2 auxiliary coal bin, a No. 1 auxiliary coal bin shut-off door is provided at the bottom of the No. 1 auxiliary coal bin, and a No. 2 auxiliary coal bin shut-off door is provided at the bottom of the No. 2 auxiliary coal bin.

[0010] Furthermore, in order to adjust the position of the coal block under the drive of the servo motor and realize the coal-moving action so that the stored coal can fall smoothly into the auxiliary coal bunker, the anti-blocking coal-moving assembly includes a limit block installed on the top of the No. 1 auxiliary coal bunker and the No. 2 auxiliary coal bunker, a servo motor is arranged on one side of the limit block, and an auger is arranged on the output shaft of the servo motor and passes through the limit block.

[0011] Furthermore, in order to limit the coal blocks when they fall to the coal feeder or the two-way coal feeder, the two sets of limit protection plates can play a limiting role. The coal blocks will fall between the two, and then the coal blocks can absorb the kinetic energy of the coal blocks when they contact the limit protection plates, thereby reducing the impact force of the coal blocks when they fall on the belt, and reducing the impact force of the coal blocks on the coal feeder or the belt in the two-way coal feeder after falling, which helps to reduce the wear of the belt and extend the service life of the belt. The limit protection component includes a connecting plate installed on one side of the two-way coal feeder and the coal feeder, and a hydraulic pressure is arranged on one side of the connecting plate through a limit rod. Rod, one end of the hydraulic rod is connected with a torsion block, a fixed shaft is arranged in the middle of the torsion block, drivers are arranged at both ends of the torsion block, and a limit protection plate is arranged at the top of the driver through the connecting block; the driver comprises a connecting rod 1 installed at both ends of the torsion block, both sides of the connecting rod 1 are respectively connected with the torsion block and the rotating block through a limit shaft 1, a limit shaft 3 is arranged on one side of the rotating block and connected with the connecting plate, a connecting rod 2 is arranged on one side of the rotating block, and both sides of the connecting rod 2 are respectively connected with the rotating block and the connecting plate through a limit shaft 2, and the connecting block is arranged on the outside of the limit shaft 2.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model has a simple structure and is easy to operate. In specific applications, a high-quality coal storage bin or a low-quality coal storage bin can be selected according to the operating requirements of the unit to realize coal transportation, thereby realizing the effect of multi-bin integrated coal transportation. In addition, by setting an anti-blocking coal-moving component, the position of the coal block can be adjusted under the drive of the servo motor to realize the coal-moving action, so that the stored coal can fall smoothly into the auxiliary coal bin.

[0014] 2. The utility model sets a limit protection component, so that when the coal block falls to the coal feeder or the two-way coal feeder, it can play a limiting role under the action of two sets of limit protection plates, and the coal block will fall between the two. Then, the coal block can absorb the kinetic energy of the coal block when it contacts the limit protection plate, thereby reducing the impact force of the coal block when it falls on the belt, and reducing the impact force of the coal block on the coal feeder or the belt in the two-way coal feeder after falling, which helps to reduce the wear of the belt and extend the service life of the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of a multi-bin coal conveying device according to an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a multi-bin coal conveying device according to an embodiment of the utility model from another angle;

[0018] Figure 3 It is a partial cross-sectional view of a multi-bin coal conveying device according to an embodiment of the utility model;

[0019] Figure 4 This is one of the partial schematic diagrams of a multi-bin coal conveying device according to an embodiment of the utility model;

[0020] Figure 5 This is a second partial schematic diagram of a multi-bin coal conveying device according to an embodiment of the utility model;

[0021] Figure 6 It is a structural schematic diagram of a position limiting protection component in a multi-bin coal conveying device according to an embodiment of the utility model.

[0022] In the figure:

[0023] 1. High-quality coal storage bin; 2. Low-quality coal storage bin; 3. Shut-off door of No. 2 auxiliary coal bin; 4. No. 1 auxiliary coal bin; 5. No. 2 auxiliary coal bin; 6. Anti-blocking coal-moving assembly; 601. Limit block; 602. Servo motor; 603. Auger; 7. Two-way coal feeder; 8. Coal feeder; 9. Limit protection assembly; 901. Connecting plate; 902. Limit rod; 903. Hydraulic rod; 904. Twist block; 905. 05. Fixed shaft; 906. Driver; 9061. Connecting rod one; 9062. Limiting shaft one; 9063. Rotating block; 9064. Limiting shaft three; 9065. Connecting rod two; 9066. Limiting shaft two; 907. Connecting block; 908. Limiting protective plate; 10. High-quality coal bunker shut-off door; 11. Low-quality coal bunker shut-off door; 12. Flexible rapper; 13. No. 1 auxiliary coal bunker shut-off door. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] According to an embodiment of the utility model, a multi-bin coal conveying device is provided.

[0026] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-Figure 6 As shown, according to the multi-bin coal conveying device of the embodiment of the utility model, it includes a high-quality coal storage bin 1 and a low-quality coal storage bin 2, and a No. 1 auxiliary coal bin 4 and a No. 2 auxiliary coal bin 5 are respectively provided on one side of the high-quality coal storage bin 1 and the low-quality coal storage bin 2, and the tops of the No. 1 auxiliary coal bin 4 and the No. 2 auxiliary coal bin 5 are both provided with anti-blocking coal-moving components 6, and the bottoms of the No. 1 auxiliary coal bin 4 and the No. 2 auxiliary coal bin 5 are provided with two-way coal feeders 7, and the bottoms of the high-quality coal storage bin 1 and the low-quality coal storage bin 2 are provided with coal feeders 8, and one side of the two-way coal feeder 7 and the coal feeder 8 are both provided with a limited position protection component 9.

[0027] In one embodiment, for the above-mentioned high-quality coal storage bin 1, a high-quality coal bin shutoff door 10 is provided at the bottom end of the high-quality coal storage bin 1, a low-quality coal bin shutoff door 11 is provided at the bottom end of the low-quality coal storage bin 2, and flexible rappers 12 are provided on the outer sides of the No. 1 auxiliary coal bin 4 and the No. 2 auxiliary coal bin 5, a No. 1 auxiliary coal bin shutoff door 13 is provided at the bottom end of the No. 1 auxiliary coal bin 4, and a No. 2 auxiliary coal bin shutoff door 3 is provided at the bottom end of the No. 2 auxiliary coal bin 5, so that the rapping action can be performed under the action of the flexible rapper 12, ensuring that the internal storage coal at each position falls smoothly into the two-way coal feeder 7 below, ensuring stability during use.

[0028] It should be explained that the flexible rapper 12 belongs to the prior art, so its specific structure is not disclosed in this solution. In fact, it ensures that the stored coal in the coal bunker can fall smoothly into the coal feeder below by performing a rapping action. It mainly includes the following parts:

[0029] Vibration motor: This is the power source of the flexible rapper, which provides the power required for the rapping action. The vibration motor is usually tightly fixed to the base to form a single-point directional forced vibration system.

[0030] Vibrating parts: These parts are the key parts for performing the vibrating action, including pistons, piston rods, impact rods, etc. They are connected together through a specific mechanical structure and can produce a strong vibrating effect under the drive of the vibration motor.

[0031] In one embodiment, for the above-mentioned anti-blocking coal-moving component 6, the anti-blocking coal-moving component 6 includes a limit block 601 installed on the top of the No. 1 auxiliary coal bin 4 and the No. 2 auxiliary coal bin 5, and a servo motor 602 is provided on one side of the limit block 601. An auger 603 is provided on the output shaft of the servo motor 602 and passes through the limit block 601, so that the position of the coal block can be adjusted under the driving action of the servo motor 602 to realize the coal-moving action, so that the stored coal can fall smoothly into the auxiliary coal bin.

[0032] The working principle of the anti-blocking coal-moving component 6 is as follows: the servo motor 602 is started through an external controller, and then the auger 603 can be driven to rotate under the driving action of the servo motor 602. During the rotation process, the position of the coal block can be adjusted to achieve the purpose of coal moving. It can adapt to different work requirements and reduce the risk of blockage by forward and reverse rotation.

[0033] In one embodiment, for the above-mentioned limit protection component 9, the limit protection component 9 includes a connecting plate 901 installed on one side of the two-way coal feeder 7 and the coal feeder 8, a hydraulic rod 903 is provided on one side of the connecting plate 901 through a limit rod 902, one end of the hydraulic rod 903 is connected to a torsion block 904, a fixed shaft 905 is provided in the middle of the torsion block 904, drivers 906 are respectively provided at both ends of the torsion block 904, and a limit protection plate 908 is provided at the top of the driver 906 through a connecting block 907; the driver 906 includes a connecting rod 9061 installed at both ends of the torsion block 904, both sides of the connecting rod 9061 are respectively connected to the torsion block 904 and the rotating block 9063 through a limit shaft 9062, and one side of the rotating block 9063 A limiting shaft 3 9064 is provided to be connected with the connecting plate 901, a connecting rod 2 9065 is provided on one side of the rotating block 9063, and the two sides of the connecting rod 2 9065 are respectively connected with the rotating block 9063 and the connecting plate 901 through a limiting shaft 2 9066, and the connecting block 907 is provided on the outer side of the limiting shaft 2 9066, so that when the coal block falls to the coal feeder 8 or the two-way coal feeder 7, it can play a limiting role under the action of the two sets of limiting protection plates 908, and the coal block will fall between the two, and then the coal block can absorb the kinetic energy of the coal block when contacting the limiting protection plate 908, thereby reducing the impact force of the coal block when it falls on the belt, and reducing the impact force of the coal block on the belt of the coal feeder 8 or the two-way coal feeder 7 after falling, which helps to reduce the wear of the belt and extend the service life of the belt.

[0034] The working principle of the limit protection component 9 is as follows: the hydraulic rod 903 is started by an external controller to drive the connecting rod 1 9061 at both ends of the torsion block 904 to rotate, and then the connecting rod 1 9061 drives the connecting rod 2 9065 on the rotating block 9063 to move, and the connecting rod 2 9065 is connected to the connecting block 907. The limit protection plate 908 on one side of the connecting block 907 can achieve the effect of opening and closing under a series of drives, and then the distance between the two sets of limit protection plates 908 can be adjusted according to actual needs, so as to better achieve the buffering purpose.

[0035] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0036] In actual application, high-quality coal with high calorific value is stored in high-quality coal storage bin 1, and low-quality coal with low calorific value is stored in low-quality coal storage bin 2. When in use, the diversion and blending between high-quality coal storage bin 1 and low-quality coal storage bin 2 are adjusted according to the needs of the unit, as follows:

[0037] When the unit needs to operate below the rated output, high-quality coal and low-quality coal need to be mixed into the furnace for combustion, and the high-quality coal bunker shutoff door 10 and the low-quality coal bunker shutoff door 11 are opened. At this time, the No. 1 auxiliary coal bunker shutoff door 13 and the No. 2 auxiliary coal bunker shutoff door 3 are in a closed state, the anti-blocking coal-moving assembly 6 and the flexible vibrator 12 stop working, and the two groups of coal feeders 8 and the two-way coal feeder 7 run at the same time. By adjusting the running speed of the belts in the coal feeder 8 and the two-way coal feeder 7, the blending ratio of the high-quality and low-quality coal entering the furnace can be adjusted, and the high-quality and low-quality coal can be blended together.

[0038] When the unit needs to continue to operate at reduced load, all low-calorific value inferior coal must be transported, the inferior coal bunker shutoff door 11 and the No. 2 auxiliary coal bunker shutoff door 3 are opened, and the anti-blocking coal-moving assembly 6 at the No. 2 auxiliary coal bunker shutoff door 3 works, and the coal-moving action is realized at the connection between the inferior coal storage bunker 2 and the No. 2 auxiliary coal bunker 5, so that the stored coal in the inferior coal storage bunker 2 can fall smoothly into the auxiliary coal bunker, and the flexible rapper 12 at the No. 2 auxiliary coal bunker 5 performs rapping action in the gap, ensuring that the No. 2 auxiliary coal bunker 5 falls smoothly into the two-way coal feeder 7 and coal feeder 8 below.

[0039] When the unit needs to operate at full load, all high-calorific value high-quality coal must be transported, the high-quality coal bunker shut-off door 10 and the No. 1 auxiliary coal bunker shut-off door 13 are opened, and the anti-blocking coal-moving component 6 at the No. 1 auxiliary coal bunker shut-off door 13 works, and the coal-moving action is realized at the connection between the high-quality coal storage bunker 1 and the No. 1 auxiliary coal bunker 4, so that the stored coal in the high-quality coal storage bunker 1 can fall smoothly into the No. 1 auxiliary coal bunker 4, and the flexible rapper 12 at the No. 1 auxiliary coal bunker 4 performs the rapping action in the gap, ensuring that the stored coal in the No. 1 auxiliary coal bunker 4 falls smoothly into the two-way coal feeder 7 and the coal feeder 8.

[0040] Furthermore, under the premise of configuring the main coal bunker with a secondary coal bunker and a two-way coal feeder 7, the high-calorific value high-quality coal can be diverted to the low-quality coal bunker coal feeder, and the low-calorific value low-quality coal can be diverted to the high-quality coal bunker coal feeder. Without considering the boiler combustion effect and the coal spreading effect into the furnace and the matching of the coal bunker with other fuel transportation systems in the plant, it can be achieved that all the coal entering the furnace is high-calorific value high-quality coal or low-calorific value low-quality coal. At the same time, the number of coal bunkers and coal feeding systems in front of the furnace can be reduced to half of the traditional number, so that the initial investment, operation and maintenance costs, and floor space can be greatly reduced.

[0041] In summary, with the help of the above technical solutions of the utility model, the utility model has a simple structure and is easy to operate. By setting the anti-blocking coal-moving component 6, the position of the coal block can be adjusted under the driving action of the servo motor 602 to achieve the coal-moving action, so that the stored coal can fall smoothly into the auxiliary coal bin. The utility model sets a limit protection component 9, so that when the coal block falls to the coal feeder 8 or the two-way coal feeder 7, it can play a limiting role under the action of two sets of limit protection plates 908, and the coal block will fall between the two. Then, when the coal block contacts the limit protection plate 908, the kinetic energy of the coal block can be absorbed, reducing the impact force of the coal block when it falls on the belt, reducing the impact force of the coal block on the belt of the coal feeder 8 or the two-way coal feeder 7 after falling, which helps to reduce the wear of the belt and extend the service life of the belt.

[0042] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-bin coal transport device, comprising a high-quality coal storage bin (1) and a low-quality coal storage bin (2), characterized in that: A first auxiliary coal bunker (4) and a second auxiliary coal bunker (5) are respectively arranged on one side of the high-quality coal storage bunker (1) and the low-quality coal storage bunker (2), and an anti-blocking coal-moving assembly (6) is arranged at the top of each of the first auxiliary coal bunker (4) and the second auxiliary coal bunker (5), a two-way coal feeder (7) is arranged at the bottom of each of the first auxiliary coal bunker (4) and the second auxiliary coal bunker (5), a coal feeder (8) is arranged at the bottom of each of the high-quality coal storage bunker (1) and the low-quality coal storage bunker (2), and a limit protection assembly (9) is arranged on one side of the two-way coal feeder (7).

2. A multi-bin coal conveying device according to claim 1, characterized in that: The bottom end of the high-quality coal storage bin (1) is provided with a high-quality coal bin shutoff door (10), the bottom end of the low-quality coal storage bin (2) is provided with a low-quality coal bin shutoff door (11), the outer sides of the No. 1 auxiliary coal bin (4) and the No. 2 auxiliary coal bin (5) are both provided with flexible rappers (12), the bottom end of the No. 1 auxiliary coal bin (4) is provided with a No. 1 auxiliary coal bin shutoff door (13), and the bottom end of the No. 2 auxiliary coal bin (5) is provided with a No. 2 auxiliary coal bin shutoff door (3).

3. A multi-bin coal conveying device according to claim 1, characterized in that: The anti-blocking coal-moving assembly (6) comprises a limit block (601) installed at the top of the No. 1 auxiliary coal bunker (4) and the No. 2 auxiliary coal bunker (5), a servo motor (602) is arranged on one side of the limit block (601), and an auger (603) is arranged on the output shaft of the servo motor (602) and passes through the limit block (601).

4. A multi-bin coal conveying device according to claim 1, characterized in that: The limit protection assembly (9) comprises a connecting plate (901) installed on one side of the two-way coal feeder (7) and the coal feeder (8); a hydraulic rod (903) is provided on one side of the connecting plate (901) through a limit rod (902); one end of the hydraulic rod (903) is connected to a torsion block (904); a fixed shaft (905) is provided in the middle of the torsion block (904); drivers (906) are provided at both ends of the torsion block (904); and a limit protection plate (908) is provided at the top end of the driver (906) through a connecting block (907).

5. A multi-bin coal conveying device according to claim 4, characterized in that: The driver (906) comprises a connecting rod 1 (9061) installed at both ends of the torsion block (904); the two sides of the connecting rod 1 (9061) are respectively connected to the torsion block (904) and the rotating block (9063) through a limiting shaft 1 (9062); a limiting shaft 3 (9064) connected to the connecting plate (901) is provided on one side of the rotating block (9063); and a connecting rod 2 (9065) is provided on one side of the rotating block (9063).

6. A multi-bin coal conveying device according to claim 5, characterized in that: The two sides of the second connecting rod (9065) are respectively connected to the rotating block (9063) and the connecting plate (901) through the second limiting shaft (9066), and the connecting block (907) is arranged on the outer side of the second limiting shaft (9066).

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