Anti-blocking control structure for automatic loading of raw coal bunker of thermal power plant

Abstract

The utility model relates to an anti-blocking control structure for automatic loading of a raw coal bunker of a thermal power plant, and belongs to the technical field of raw coal conveying of thermal power plants. An anti-blocking control structure for automatic loading of a raw coal bunker of a thermal power plant comprises a bunker body, a cover plate fixedly mounted at the top of the bunker body and a crushing box fixedly mounted at the top of the cover plate, and is characterized in that a cavity is reserved in the bunker body, and a crushing mechanism extending into the bunker body is arranged outside the crushing box; and a cleaning mechanism extending into the bin body is arranged outside the cover plate. Caked raw coal can be crushed through the arranged crushing mechanism, and the utilization rate of the raw coal is increased; and the cleaning mechanism is arranged, the stirring function is achieved, the materials are prevented from caking, meanwhile, the materials remaining on the inner wall of the bin body can be cleaned, and the conveying effect of the materials is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of raw coal transportation in thermal power plants, and in particular relates to an anti-blocking control structure for automatic loading of raw coal bins in thermal power plants. Background Art

[0002] In front of the coal-fired boiler of a thermal power plant, there is usually a raw coal bunker for storing coal. The coal in the raw coal bunker is transported to the boiler for combustion to release the energy in the coal. Raw coal is usually stored in an open-air canopy, which easily absorbs moisture and causes "sticky coal and agglomeration". The raw coal cannot be discharged, which easily causes coal blockage and affects the normal operation of the unit.

[0003] After searching, a Chinese patent discloses an automatic clearing and anti-blocking device for raw coal bunker in a thermal power plant, including a coal storage bunker with a cavity left inside, a crushing device arranged on one side of the coal storage bunker, an air drying device arranged inside the coal storage bunker, a stirring device arranged on one side of the coal storage bunker, and a screen fixedly connected to the inside of the coal storage bunker.

[0004] However, although the utility model is used for the automatic clearing and anti-blocking device of the raw coal bunker of the thermal power plant, it can also crush the raw coal that has been damp and agglomerated, but it does not have a special internal cleaning mechanism, and the material conveying effect is poor, so it cannot meet the use requirements. Therefore, an anti-blocking control structure for the automatic loading of the raw coal bunker of the thermal power plant is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an anti-blocking control structure for automatic loading of raw coal bin in a thermal power plant, wherein the agglomerated raw coal can be crushed by a crushing mechanism to improve the utilization rate of the raw coal; and a cleaning mechanism is provided to have a stirring effect to prevent material agglomeration and to clean the material remaining on the inner wall of the bin to improve the material conveying effect.

[0006] The utility model provides a technical solution to the above-mentioned technical problem as follows: an anti-blocking control structure for automatic loading of raw coal in a thermal power plant comprises a bin body, a cover plate fixedly mounted on the top of the bin body and a crushing box fixedly mounted on the top of the cover plate, and is characterized in that a cavity is left inside the bin body, a crushing mechanism extending into the bin body is provided on the outside of the crushing box, and a cleaning mechanism extending into the bin body is provided on the outside of the cover plate.

[0007] Beneficial effects:

[0008] 1. The crushing mechanism can be used to crush the agglomerated raw coal and improve the utilization rate of raw coal;

[0009] Second, by driving the cleaning mechanism, the material can be prevented from agglomerating; at the same time, the material remaining on the inner wall of the bin can be cleaned to improve the material conveying effect.

[0010] Preferably, the cleaning mechanism includes a stirring motor fixedly mounted on the top of the cover plate, a rotating shaft extending to the inside of the bin body is fixedly mounted on the output shaft of the stirring motor, a connecting rod is connected to the outside of the rotating shaft, and a scraper is connected to the end of the connecting rod away from the rotating shaft, and an auger is detachably mounted on the bottom end of the rotating shaft.

[0011] Beneficial effect: The stirring motor drives the rotating shaft inside the bin to rotate, and the rotating shaft drives the scraper to rotate, thereby cleaning the residual materials on the inner wall of the bin and improving the material conveying effect.

[0012] Preferably, the number of the connecting rods is four, the number of the scrapers is two, and the four connecting rods are equidistantly distributed outside the rotating shaft in an annular direction, and the two scrapers are welded to the ends of the four connecting rods that are apart.

[0013] Beneficial effect: Four connecting rods facilitate the installation of two scrapers and improve the stability of the scrapers.

[0014] Preferably, the crushing mechanism includes a driving motor fixedly mounted on the outside of the crushing box and two crushing rollers rotatably mounted inside the crushing box, a sprocket is fixedly mounted on one end of the two crushing rollers away from the driving motor, and a chain is meshed and transmitted on the outside of the two sprockets, and one end of one crushing roller away from the sprocket is fixedly connected to the output shaft of the driving motor.

[0015] Beneficial effect: Start the driving motor, and the two crushing rollers rotate through the meshing of the sprocket and the chain, so as to break the materials and make them fall into the silo, achieving the advantages of strong practicality and good anti-blocking effect, and solving the problem that the raw coal that has been damp and agglomerated cannot be crushed.

[0016] Preferably, both of the two crushing rollers are connected to the interior of the crushing box via bearings.

[0017] Beneficial effects: Reduce friction, make rotation smoother, and reduce energy consumption.

[0018] Preferably, a heating device is installed on the outer wall of the warehouse body.

[0019] Beneficial effects: Dry and heat the materials, heat the materials while stirring them, and better prevent blockage caused by damp materials agglomerating.

[0020] Preferably, the heating device comprises a drying box fixedly mounted on the outer wall of the warehouse body, and an electric heating wire and a fan are fixedly mounted inside the drying box.

[0021] Beneficial effect: The fan dries the external wind through the heating wire and blows it into the bin to dry and heat the materials.

[0022] Preferably, a side of the drying box connected to the warehouse body is provided with interconnected air outlet holes, and the number of the air outlet holes is multiple, and the multiple air outlet holes are inclined and equidistantly distributed.

[0023] Beneficial effect: Multiple air outlets are arranged at an angle, which can quickly blow the drying and heating air into the bin body.

[0024] Preferably, both left and right outer walls of the warehouse body close to the bottom are connected with mounting plates, and mounting holes are provided on the mounting plates.

[0025] Beneficial effect: It is convenient to fix the warehouse body on the equipment to ensure stability during the working process.

[0026] Preferably, the top of the crushing box is fixedly connected to a feed hopper, and the bottom of the crushing box is fixedly connected to the cover plate.

[0027] Beneficial effect: The feed hopper is arranged on the crushing box to ensure that all raw coal can pass through the crushing, thereby improving the efficiency of the crushing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0029] Figure 2 This is a top sectional view of the structure of the crushing box of the utility model;

[0030] Figure 3 It is a front view of the structure of the utility model.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Bin; 2. Cover; 3. Crushing box; 4. Feed hopper; 5. Driving motor; 6. Crushing roller; 7. Sprocket; 8. Chain; 9. Stirring motor; 10. Rotating shaft; 11. Connecting rod; 12. Scraper; 13. Auger; 14. Drying box; 15. Electric heating wire; 16. Fan; 17. Air outlet; 18. Mounting plate. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] Example

[0035] Reference Figure 1 , Figure 2 and Figure 3 As shown, an anti-blocking control structure for automatic loading of raw coal bunker in a thermal power plant comprises a cylindrical bunker body 1 which is wide at the top and narrow at the bottom, a cover plate 2 fixedly mounted on the top of the bunker body 1, and a crushing box 3 fixedly mounted on the top of the cover plate 2. Mounting plates 18 are welded to the left and right outer walls of the bunker body 1 near the bottom, and bolt mounting holes are provided on the mounting plates 18. A controller can be fixedly mounted on the back of the bunker body 1, and the electrical appliances of the device can be controlled and used through the controller. A feed hopper 4 is fixedly connected to the top of the crushing box 3, and the bottom of the crushing box 3 is fixedly connected to the cover plate 2.

[0036] A cavity is left inside the silo body 1 , a crushing mechanism extending into the silo body 1 is arranged outside the crushing box 3 , and a cleaning mechanism extending into the silo body 1 is arranged outside the cover plate 2 .

[0037] Preferably, the cleaning mechanism includes a stirring motor 9 fixedly mounted on the top of the cover plate 2, a rotating shaft 10 extending to the interior of the bin body 1 is fixedly mounted on the output shaft of the stirring motor 9, a connecting rod 11 is connected to the outside of the rotating shaft 10, and a scraper 12 is connected to the end of the connecting rod 11 away from the rotating shaft 10, and a screw auger 13 is detachably mounted on the bottom end of the rotating shaft 10.

[0038] There are four connecting rods 11 in the cleaning mechanism, and two scrapers 12 . The four connecting rods 11 are symmetrically distributed outside the rotating shaft 10 , and two scrapers 12 are welded to the ends of the four connecting rods 11 that are separated from each other.

[0039] It should be noted that the scraper 12 has a certain curvature and is adapted to the interior of the bin body 1. A limit frame can be installed at the bottom of the cover plate 2, and the rotating shaft 10 is connected to the limit frame bearing to ensure that the rotating shaft 10 rotates stably.

[0040] When this embodiment is in use, the cleaning mechanism is driven to prevent the material from clumping, and the auger 13 can effectively prevent the material from blocking the discharge port, thereby realizing the anti-blocking control function. At the same time, the scraper 12 can clean the material remaining on the inner wall of the bin body 1, thereby improving the material conveying effect.

[0041] Preferably, the crushing mechanism includes a driving motor 5 fixedly mounted on the outside of the crushing box 3 and two crushing rollers 6 rotatably mounted inside the crushing box 3, a sprocket 7 is fixedly mounted on one end of the two crushing rollers 6 away from the driving motor 5, and a chain 8 is meshed and driven on the outside of the two sprockets 7, and one end of one crushing roller 6 away from the sprocket 7 is fixedly connected to the output shaft of the driving motor 5.

[0042] The two crushing rollers 6 are adapted to the inside of the crushing box 3, and the two crushing rollers 6 are connected to the inside of the crushing box 3 through bearings. A shielding cover for protecting the drive motor 5 is fixedly installed on the front of the outside of the crushing box 3, and a wiring hole and a heat dissipation hole are opened inside the shielding cover.

[0043] When the present embodiment is in use, the material is introduced into the crushing box 3 through the feed hopper 4, the drive motor 5 is started, and the two crushing rollers 6 are rotated through the engagement of the sprocket 7 and the chain 8, thereby breaking the material to facilitate the use of the material.

[0044] Preferably, a heating device is provided on the outer wall of the silo 1, and the heating device includes a drying box 14 fixedly mounted on the outer wall of the silo 1, and an electric heating wire 15 and a fan 16 are fixedly mounted in the drying box 14 from left to right. A communicating air outlet 17 is provided on one side of the drying box 14 connected to the silo 1, and the number of the air outlet 17 is multiple, and the multiple air outlets 17 are inclined and equidistantly distributed, and the specific air outlet 17 is set higher on the left and lower on the right. The heating device dries and heats the material, and heats the material while stirring it, so as to better prevent blockage caused by damp material agglomeration.

[0045] It should be noted that the air outlet 17 is inclined, which can well assist heat energy to enter the warehouse body 1 and prevent materials from entering the drying box 14. A through hole compatible with the fan 16 is opened inside the drying box 14 away from the warehouse body 1. A dustproof net is fixedly installed on the side of the drying box 14 away from the warehouse body 1 to cover the through hole.

[0046] It should be noted that the number of connecting rods and scrapers in this embodiment is not limited as long as the cleaning effect is achieved.

[0047] The working principle of the above embodiment is:

[0048] The material is introduced into the crushing box 3 through the feed hopper 4, and the driving motor 5 is started. The two crushing rollers 6 are rotated through the engagement of the sprocket 7 and the chain 8, so that the material is broken and falls into the interior of the bin body 1, and then the cleaning mechanism is driven to prevent the material from agglomerating. The auger 13 can effectively prevent the material from clogging the discharge port, realizing the anti-clogging control function, effectively solving the problem of crushing the raw coal after being damp and agglomerated, and setting the cleaning mechanism to improve the material transportation effect without causing material waste.

[0049] It should be noted that the electrical components (drive motor 5, stirring motor 9, electric heating wire 15, fan 16) appearing in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and it belongs to the existing public power connection technology and will not be described in detail in the text.

[0050] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred system or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] 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. An anti-blocking control structure for automatic loading of raw coal bunker in a thermal power plant, comprising a bunker body (1), a cover plate (2) fixedly mounted on the top of the bunker body (1), and a crushing box (3) fixedly mounted on the top of the cover plate (2), characterized in that: A cavity is left inside the silo (1), a crushing mechanism extending into the silo (1) is provided outside the crushing box (3), and a cleaning mechanism extending into the silo (1) is provided outside the cover plate (2); The cleaning mechanism comprises a stirring motor (9) fixedly mounted on the top of the cover plate (2); a rotating shaft (10) extending to the interior of the bin body (1) is fixedly mounted on the output shaft of the stirring motor (9); a connecting rod (11) is connected to the outside of the rotating shaft (10); and a scraper (12) is connected to one end of the connecting rod (11) away from the rotating shaft (10); and a screw auger (13) is detachably mounted on the bottom end of the rotating shaft (10).

2. The anti-blocking control structure for automatic loading of raw coal bunker in thermal power plant according to claim 1 is characterized in that: The number of the connecting rods (11) is four, the number of the scrapers (12) is two, and the four connecting rods (11) are equidistantly distributed outside the rotating shaft (10) in the annular direction, and the two scrapers (12) are welded to the ends of the four connecting rods (11) that are separated from each other.

3. The anti-blocking control structure for automatic loading of raw coal bunker in thermal power plant according to claim 1 is characterized in that: The crushing mechanism comprises a driving motor (5) fixedly mounted on the outside of the crushing box (3) and two crushing rollers (6) rotatably mounted on the inside of the crushing box (3); a sprocket (7) is fixedly mounted on one end of the two crushing rollers (6) away from the driving motor (5); and a chain (8) is meshed and driven on the outside of the two sprockets (7); and one end of one crushing roller (6) away from the sprocket (7) is fixedly connected to the output shaft of the driving motor (5).

4. The anti-blocking control structure for automatic loading of raw coal bunker in thermal power plant according to claim 3 is characterized in that: The two crushing rollers (6) are connected to the inside of the crushing box (3) through bearings.

5. The anti-blocking control structure for automatic loading of raw coal bunker in thermal power plant according to claim 1 is characterized in that: A heating device is installed on the outer wall of the warehouse body (1).

6. The anti-blocking control structure for automatic loading of raw coal bunker in thermal power plant according to claim 5 is characterized in that: The heating device comprises a drying box (14) fixedly mounted on the outer wall of the warehouse body (1), and an electric heating wire (15) and a fan (16) are fixedly mounted inside the drying box (14).

7. The anti-blocking control structure for automatic loading of raw coal bunker in thermal power plant according to claim 6 is characterized in that: A side of the drying box (14) connected to the warehouse body (1) is provided with interconnected air outlet holes (17), the number of the air outlet holes (17) is multiple, and the multiple air outlet holes (17) are inclined and equidistantly distributed.

8. The anti-blocking control structure for automatic loading of raw coal bunker in thermal power plant according to any one of claims 1 to 7, characterized in that: The left and right outer walls of the warehouse body (1) close to the bottom are both connected to mounting plates (18), and mounting holes are provided on the mounting plates (18).

9. The anti-blocking control structure for automatic loading of raw coal bunker in thermal power plant according to any one of claims 1 to 7, characterized in that: The top of the crushing box (3) is fixedly connected to a feed hopper (4), and the bottom of the crushing box (3) is fixedly connected to the cover plate (2).

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