Material drying equipment for thermal power plant

Abstract

The utility model discloses material drying equipment for a thermal power plant, which belongs to the field of drying equipment and comprises a drying box, a drying mechanism is arranged in the drying box, and the drying mechanism comprises an air electric heater, a fan, a crushing tooth roller, a driving motor, a large belt wheel, a stirring shaft, a stirring plate and a small belt wheel. The air electric heater is fixedly connected to the interior of an air inlet pipe on the left side of the drying box, and the arranged drying mechanism can be used for crushing the coal raw materials before the coal raw materials are dried, and continuously stirring and turning over the coal raw materials in the drying process, so that the coal raw materials can be uniformly heated; heat is quickly and uniformly transferred among the coal raw materials, and the coal raw materials are dried without consuming longer time and higher drying temperature, so that the purpose of quickly evaporating moisture in the coal raw materials is achieved, the drying effect and the drying efficiency of the coal raw materials are improved, the production efficiency of a thermal power plant is improved, and the energy consumption is reduced. And the drying cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of drying equipment, especially relates to a material drying equipment for thermal power plant. BACKGROUND

[0002] Thermal power plant is a factory that uses fuel (such as coal) to produce electricity. Its basic production process is: when the fuel is burned, it heats the water to generate steam, converting the chemical energy of the fuel into heat energy. The steam pressure drives the steam turbine to rotate, converting the heat energy into mechanical energy. Then the steam turbine drives the generator to rotate, converting the mechanical energy into electrical energy.

[0003] In the prior art, a drying device for thermal power plant with publication number "CN217303439U" and patent name "a kind of raw material drying device for thermal power plant", a drying device is disclosed, which is described in the patent "it includes, stirring mechanism, including device box, motor is arranged in the right side of the device box, transmission shaft is arranged on the motor output shaft, stirring blade is arranged on the surface of the transmission shaft and located in the inner chamber of the device box, and feed hopper is arranged on the top of the device box both sides;Drying mechanism, including air supply box, setting in the top of the device box, setting in the top of the air supply box, setting in the upper end of the inner chamber of the air inlet slot fixed frame, setting in the inner chamber of the fixed frame, and setting in the lower end of the inner chamber of the air supply box heating mesh sheet" and other technical solutions;

[0004] However, the drying mechanism equipped with stirring mechanism can uniformly dry the coal when stirring the coal raw material. However, since the coal raw material is not crushed during the stirring and drying process, the large volume of coal raw material is difficult to heat uniformly during the drying process. Due to the difference in heat transfer efficiency between the surface and the inside of the large volume of coal raw material, the surface is easy to heat, while the inside is difficult to quickly transfer heat due to the large volume and high thermal resistance, resulting in slow evaporation of internal moisture. This uneven heat transfer will result in low drying efficiency, and the surface of the coal raw material will be over-dried while the inside still contains a lot of moisture. It takes a longer time and higher drying temperature to evaporate and dry the internal moisture during the drying of the coal raw material, which not only reduces the drying effect, but also increases the drying cost and affects the production efficiency of the thermal power plant.

[0005] Therefore, in order to solve the above technical problems, the utility model provides a material drying equipment for thermal power plant. SUMMARY

[0006] The main purpose of the utility model is to provide a material drying equipment for thermal power plant, which can effectively solve the problems in the background art.

[0007] To achieve the above object, the technical scheme adopted by the utility model is:

[0008] A kind of material drying equipment for thermal power plant, including drying box, the inside of the drying box is equipped with drying mechanism, and drying mechanism includes air electric heater, fan, crushing tooth roll, driving motor, large pulley, stirring shaft, stirring board and small pulley, the inside of air electric heater fixedly connected in drying box left side air inlet pipe, and fan is fixedly connected at the top of air inlet pipe, two the inside of feed hopper fixedly connected in drying box top surface of two crushing tooth rolls is movably connected by first rotating rod at both ends, and the first rotating rod outside end of one end of two crushing tooth rolls is also fixedly connected with gear meshing with each other, the output end of driving motor is fixedly connected with the first rotating rod of the other end of one crushing tooth roll, and the outside end wall of the first rotating rod of the other end of another crushing tooth roll is also fixedly connected with large pulley, the inside of drying box is movably connected by second rotating rod at both ends of stirring shaft, and the outside end wall of one end of second rotating rod is fixedly connected with small pulley, small pulley and large pulley are movably connected with tension belt, the outer wall of stirring shaft is also fixedly connected with stirring board.

[0009] Preferably, the left side wall top of the drying box is fixedly installed with air inlet pipe, and the top end of the air inlet pipe is fixedly installed with air electric heater inside, the top end of the air inlet pipe is also fixedly installed with fan.

[0010] Preferably, the top surface of the drying box is fixedly installed with the communicating feed hopper, and the inside of the feed hopper is fixedly installed with guide chute on the left and right side walls respectively, a group of symmetrical first rotating holes are also formed on the left and right side walls of the feed hopper respectively.

[0011] Preferably, the crushing tooth roll is provided with a group of symmetries, and the first rotating rod is fixedly installed on the left and right end walls of the crushing tooth roll respectively, the first rotating rod is movably installed in the first rotating hole, and the gear is also fixedly installed on the outside end of the first rotating rod at left end, the two gears are meshed together, the driving motor is fixedly installed on the right side wall of the feed hopper, and the output end of the driving motor is fixedly installed with the first rotating rod of the right end of one crushing tooth roll.

[0012] Preferably, the second rotating hole is formed on the left and right side walls of the drying box respectively, and the second rotating rod is fixedly installed on the left and right ends of the stirring shaft and movably installed in the second rotating hole, a plurality of stirring boards are fixedly installed on the outer wall of the stirring shaft, and small pulley is fixedly installed on the outside end of the second rotating rod at the right end of the drying box, large pulley is fixedly installed on the outside end of the first rotating rod at the right end of another crushing tooth roll, and tension belt is movably installed between large pulley and small pulley.

[0013] Preferably, the bottom surface left side of the drying box is fixedly provided with a communicating discharge port, and the front and rear walls of the discharge port are respectively provided with a socket, the rear ends of the left and right side walls of the discharge port are respectively fixedly provided with a fixed plate, the front end wall of the fixed plate is fixedly provided with an electric push rod, the output end of the electric push rod is fixedly provided with a connecting plate, and the front wall of the connecting plate is fixedly provided with a baffle inserted into the socket.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] In the utility model, the coal raw materials can be guided into the feeding hopper through the guide inclined plate, the first rotating rod is rotated by the driving motor, the first rotating rod drives the crushing tooth rollers to rotate, the two gears rotate relatively under the driving of the first rotating rod, the symmetrical crushing tooth rollers rotate relatively, the coal raw materials are crushed during the rotation, the volume of the coal raw materials is reduced, the large pulley rotates under the driving of the first rotating rod after the crushed coal raw materials fall into the drying box, the small pulley rotates by the large pulley through the tension belt, the small pulley drives the stirring shaft to rotate through the second rotating rod, the stirring shaft continuously stirs and turns the crushed coal raw materials in the drying box through the stirring plate, the air is heated through the air electric heater when the fan blows the external air into the drying box through the air inlet pipe, the hot air enters the drying box to dry the coal raw materials, the coal raw materials are crushed before drying, and the coal raw materials are continuously stirred and turned during drying, the coal raw materials are uniformly heated, the heat is quickly and uniformly transferred among the coal raw materials, the coal raw materials are dried without consuming more time and higher drying temperature, the internal moisture of the coal raw materials is quickly evaporated, the drying effect and efficiency of the coal raw materials are improved, the production efficiency of the thermal power plant is improved, and the drying cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a whole structure schematic view of the drying box of the utility model;

[0018] Figure 3 It is a structure split schematic view of the discharge port of the utility model;

[0019] Figure 4 It is a whole structure schematic view of the drying mechanism of the utility model.

[0020] In the figure: 1, drying box; 2, drying mechanism; 3, feed hopper; 4, guide chute; 5, first rotating hole; 6, second rotating hole; 7, discharge port; 8, air inlet pipe; 9, air electric heater; 10, fan; 11, socket; 12, fixed plate; 13, electric push rod; 14, baffle; 15, connecting plate; 16, crushing tooth roller; 17, first rotating rod; 18, gear; 19, driving motor; 20, large pulley; 21, stirring shaft; 22, stirring plate; 23, second rotating rod; 24, small pulley; 25, tension belt. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0022] As shown in Figure 1 - Figure 4 A coal drying equipment for thermal power plant, including drying box 1, drying box 1 inside is equipped with drying mechanism 2, and drying mechanism 2 includes air electric heater 9, fan 10, crushing tooth roller 16, driving motor 19, large pulley 20, stirring shaft 21, stirring plate 22 and small pulley 24, air electric heater 9 is fixedly connected in the inside of left side air inlet pipe 8 of drying box 1, and fan 10 is fixedly connected at the top of air inlet pipe 8, two crushing tooth rollers 16 are movably connected in the inside of feed hopper 3 fixedly connected on the top surface of drying box 1 through first rotating rod 17 at both ends respectively, and the first rotating rod 17 outside end on one end of two crushing tooth rollers 16 is also fixedly connected with meshing gear 18, the output end of driving motor 19 is fixedly connected with the first rotating rod 17 on the other end of one of crushing tooth rollers 16, and the outside end wall of the first rotating rod 17 on the other end of the other crushing tooth roller 16 is also fixedly connected with large pulley 20, stirring shaft 21 is movably connected in the inside of drying box 1 through second rotating rod 23 at both ends, and the outside end wall of one end of second rotating rod 23 is fixedly connected with small pulley 24, and small pulley 24 and large pulley 20 are movably connected with tension belt 25, and the outer wall of stirring shaft 21 is also fixedly connected with stirring plate 22.

[0023] As shown in Figure 2 The left side wall top of drying box 1 is fixedly installed with air inlet pipe 8, and the top end inside of air inlet pipe 8 is fixedly installed with air electric heater 9, and the top end of air inlet pipe 8 is also fixedly installed with fan 10, when fan 10 introduces outside air into drying box 1 through air inlet pipe 8, the air can be heated through air inlet pipe 8, so that the air entering drying box 1 is hot air, which can not only blow hotly to the crushed coal raw materials falling into drying box 1, but also the heat carried into drying box 1 can dry the coal raw materials in drying box 1;

[0024] As shown in Figure 2As shown, the top surface of the drying box 1 is fixedly installed with a communicating feed hopper 3, and the inside left and right side walls of the feed hopper 3 are respectively fixedly installed with guide chute plates 4, through which the coal raw materials can be guided into the feed hopper 3 for crushing treatment, and a group of symmetrical first rotating holes 5 are respectively formed in the left and right side walls of the feed hopper 3, which are used to cooperate with the first rotating rods 17 to realize the rotating operation;

[0025] As shown in the figure, Figure 4 The crushing tooth rollers 16 are provided with a group of symmetries, and the left and right end walls of the crushing tooth rollers 16 are respectively fixedly installed with first rotating rods 17, which are movably installed in the first rotating holes 5, and the outside end of the first rotating rod 17 at the left end is also fixedly installed with a gear 18, and the two gears 18 are meshed together, a driving motor 19 is fixedly installed on the right side wall of the feed hopper 3, and the output end of the driving motor 19 and the first rotating rod 17 at the right end of one of the crushing tooth rollers 16 are fixedly installed together, and the driving output end of the driving motor 19 is driven to drive one of the crushing tooth rollers 16 to rotate through the first rotating rod 17, which will drive the gear 18 installed on the first rotating rod 17 at one end to rotate, and the gear 18 will drive the other gear 18 meshed with it to rotate, so that the other gear 18 drives the other crushing tooth roller 16 to rotate through the first rotating rod 17, so that the symmetrical crushing tooth rollers 16 rotate relatively and crush the coal raw materials in the process of rotation, and the volume of the coal raw materials is reduced after crushing, the surface area of the coal raw materials is increased after the volume is reduced, and the contact area with the drying medium such as hot air is also increased, which is beneficial to the faster transfer of heat to the coal raw materials, accelerates the evaporation of moisture, thereby improving the drying efficiency, at the same time, it is also easier to distribute uniformly in the drying equipment, further improving the drying effect, and is beneficial to the subsequent processing and use;

[0026] As shown in the figure, Figure 4As shown, the left and right side walls of the drying box 1 are respectively provided with second rotating holes 6, and the left and right ends of the stirring shaft 21 are respectively fixedly installed with second rotating rods 23 and movably installed in the second rotating holes 6. A plurality of stirring plates 22 are fixedly installed on the outer wall of the stirring shaft 21. A small pulley 24 is fixedly installed on the outer end of the second rotating rod 23 at the right end of the drying box 1. A large pulley 20 is fixedly installed on the outer end of the first rotating rod 17 at the right end of the other crushing tooth roller 16. A tension belt 25 is movably installed between the large pulley 20 and the small pulley 24. When the large pulley 20 rotates under the driving of the first rotating rod 17, the small pulley 24 is driven to rotate through the tension belt 25, so that the stirring shaft 21 is driven to rotate through the second rotating rod 23. The stirring shaft 21 continuously stirs and turns the coal raw materials in the drying box 1 through the stirring plates 22. Through stirring, the wet layer on the surface of the coal raw materials can be broken, so that the internal moisture is more easily exposed and evaporated. At the same time, stirring is also helpful for uniform heating between coal particles, which can prevent the mutual sticking of coal particles during the drying process, maintain the loose state of the particles, avoid the occurrence of local overheating or overwetting, and is beneficial to the transfer of heat and the evaporation of moisture. In this way, the coal raw materials can be fully dried during the drying process, and the drying efficiency is improved.

[0027] As shown in the figure, Figure 3 The bottom left side of the drying box 1 is fixedly installed with a communicating discharge port 7. The front and rear walls of the discharge port 7 are respectively provided with sockets 11. The rear ends of the left and right side walls of the discharge port 7 are respectively fixedly installed with fixed plates 12. The front end wall of each fixed plate 12 is fixedly installed with an electric push rod 13. The output end of each electric push rod 13 is fixedly installed with a connecting plate 15. The front wall of the connecting plate 15 is fixedly installed with a baffle plate 14 inserted in the socket 11. By opening the electric push rod 13 installed on the fixed plate 12, the electric push rod 13 drives the output end to push the connecting plate 15 rearward, so that the connecting plate 15 drives the baffle plate 14 to move in the socket 11, so that the baffle plate 14 no longer shields the discharge port 7, and the dried coal raw materials can be discharged from the drying box 1 through the discharge port 7.

[0028] The specific drying principle of the thermal power plant raw material by the drying mechanism 2 is as follows:

[0029] The coal raw material is put into the feeding hopper 3, and the coal raw material is guided into the feeding hopper 3 through the guide chute 4. At this time, the driving motor 19 drives the output end to drive the first rotating rod 17 at both ends of the crushing tooth roller 16 in the rear to rotate in the first rotating hole 5 opened on the two side walls of the feeding hopper 3. The first rotating rod 17 drives the crushing tooth roller 16 to rotate. At this time, the first rotating rod 17 also drives the gear 18 to rotate. The gear 18 in the rear and the gear 18 in the front are engaged with each other. Therefore, the two gears 18 are relatively engaged and rotated. The front gear 18 drives the front crushing tooth roller 16 to rotate synchronously through the first rotating rod 17. The symmetrical crushing tooth rollers 16 are relatively rotated in the feeding hopper 3. In this process, the coal raw material in the feeding hopper 3 is crushed. After crushing, the coal raw material falls into the drying box 1. The fan 10 installed at the top end of the air inlet pipe 8 guides the air outside into the drying box 1. The air entering the drying box 1 is heated by the air electric heater 9 installed at the top end of the air inlet pipe 8. The air entering the drying box 1 becomes hot air and directly blows the falling coal raw material. Under the influence of the heat of the hot air, the temperature in the drying box 1 is increased, so that the coal raw material in the drying box 1 is dried. At the same time, the first rotating rod 17 at the right end of the front crushing tooth roller 16 drives the large belt pulley 20 to rotate. The large belt pulley 20 drives the small belt pulley 24 to rotate through the tension belt 25. The small belt pulley 24 drives the second rotating rod 23 to rotate in the second rotating hole 6 opened on the two side walls of the drying box 1. The second rotating rod 23 drives the stirring shaft 21 in the drying box 1. In the process of rotating, the stirring shaft 21 stirs and turns the coal raw material in the drying box 1 through the stirring plates 22 installed on the outer wall. The coal raw material is uniformly heated, so that the heat is quickly and uniformly transmitted between the coal raw material. The coal raw material is dried without consuming more time and higher drying temperature. The purpose of quickly evaporating the internal moisture of the coal raw material is achieved. Finally, the electric push rod 13 installed on the fixed plate 12 is turned on. The electric push rod 13 drives the output end to push the connecting plate 15 in the rear. The connecting plate 15 drives the baffle 14 to move in the socket 11. When the baffle 14 no longer blocks the discharge port 7, the dried coal raw material is quickly discharged from the drying box 1. The drying effect and efficiency of the coal raw material are improved. The production efficiency of the thermal power plant is improved, and the drying cost is reduced.

[0030] The preferred embodiments of the present application are described above, but the present application is not limited to the preferred embodiments. Although the present application is described in detail with reference to the foregoing embodiments, various improvements can be made to the present application without departing from the scope of the present application, and equivalent substitutions can be made to the components of the present application, or equivalent substitutions can be made to some technical features. Any modification within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A material drying apparatus for a thermal power plant, comprising a drying chamber (1), characterized in that: The inside of the drying box (1) is provided with a drying mechanism (2), and the drying mechanism (2) comprises an air electric heater (9), a fan (10), a crushing tooth roller (16), a driving motor (19), a large belt wheel (20), a stirring shaft (21), a stirring plate (22) and a small belt wheel (24). The air electric heater (9) is fixedly connected in the inside of the left air inlet pipe (8) of the drying box (1), and the fan (10) is fixedly connected at the top of the air inlet pipe (8). The two crushing tooth rollers (16) are movably connected in the inside of the feed hopper (3) fixedly connected to the top surface of the drying box (1) through the first rotating rods (17) at the two ends, and the first rotating rods (17) at one end of the two crushing tooth rollers (16) are further fixedly connected with the gear wheels (18) meshing with each other. The output end of the driving motor (19) is fixedly connected with the first rotating rod (17) at the other end of one of the crushing tooth rollers (16), and the outer side wall of the first rotating rod (17) at the other end of the other crushing tooth roller (16) is further fixedly connected with the large belt wheel (20). The stirring shaft (21) is movably connected in the inside of the drying box (1) through the second rotating rods (23) at the two ends, and the outer side wall of the second rotating rod (23) at one end is fixedly connected with the small belt wheel (24). The small belt wheel (24) and the large belt wheel (20) are movably connected with the tension belt (25), and the outer wall of the stirring shaft (21) is further fixedly connected with the stirring plate (22).

2. A material drying apparatus for a thermal power plant according to claim 1, characterized in that: The left side wall of the drying box (1) is fixedly provided with the air inlet pipe (8) at the top, and the air inlet pipe (8) is further fixedly provided with the air electric heater (9) and the fan (10) at the top.

3. A material drying apparatus for a thermal power plant according to claim 2, characterized in that: The top surface of the drying box (1) is fixedly provided with the feed hopper (3) in communication, and the inside of the feed hopper (3) is further fixedly provided with the guide inclined plates (4) on the left and right side walls, respectively. A group of symmetrical first rotating holes (5) are further formed in the left and right side walls of the feed hopper (3), respectively.

4. A material drying apparatus for a thermal power plant according to claim 3, characterized in that: The crushing tooth roller (16) is provided with a group of symmetrical crushing tooth rollers (16), and the first rotating rods (17) are fixedly installed on the left and right end walls of the crushing tooth roller (16). The first rotating rods (17) are movably installed in the first rotating holes (5), and the gear wheels (18) are further fixedly installed on the outer side of the first rotating rods (17) at the left end. The two gear wheels (18) are meshed with each other, the driving motor (19) is fixedly installed on the right side wall of the feed hopper (3), and the output end of the driving motor (19) is fixedly installed with the first rotating rod (17) at the right end of one of the crushing tooth rollers (16).

5. A material drying apparatus for a thermal power plant according to claim 4, characterized in that: Second rotation holes (6) are formed in the left and right side walls of the drying box (1), and second rotation rods (23) are fixedly installed at the left and right ends of the stirring shaft (21) and movably installed in the second rotation holes (6), a plurality of stirring plates (22) are fixedly installed on the outer wall of the stirring shaft (21), a small pulley (24) is fixedly installed on the outer end of the second rotation rod (23) at the right end of the drying box (1), the large pulley (20) is fixedly installed on the outer end of the first rotation rod (17) at the right end of the other crushing tooth roller (16), and a tension belt (25) is movably installed between the large pulley (20) and the small pulley (24).

6. A material drying apparatus for a thermal power plant according to claim 5, characterized in that: A communication discharge port (7) is fixedly installed on the bottom left side of the drying box (1), and a plurality of sockets (11) are formed in the front and back walls of the discharge port (7), fixed plates (12) are fixedly installed at the rear ends of the left and right side walls of the discharge port (7), an electric push rod (13) is fixedly installed on the front end wall of each fixed plate (12), a connecting plate (15) is fixedly installed on the output end of the electric push rod (13), and a baffle (14) is fixedly installed on the front wall of the connecting plate (15) and inserted into the socket (11).

Images