Waste heat recovery system of grate cooler

Abstract

The utility model relates to the technical field of grate coolers, and discloses a grate cooler waste heat recovery system which comprises a machine body, a feeding bin and a star-shaped discharger are arranged on the machine body, an obliquely-arranged grate plate is arranged in the machine body, the left end of the grate plate is higher than the right end of the grate plate, the left end of the grate plate is connected with the machine body in a rotating mode, and a discharging port is formed in the right side wall of the machine body. The top of the machine body is connected with an air outlet pipe; the air outlet pipe is connected with the waste heat recycling box and the cleaning box, and an air blower is connected to the outer side wall of the machine body. A coil pipe is arranged in the waste heat recycling box, the top of the coil pipe is connected with an air outlet pipe, the bottom of the coil pipe extends into the cleaning box, an air outlet branch pipe is arranged at the bottom of the inner side of the cleaning box and connected with an air outlet spray head, and the side wall of the waste heat recycling box is connected with a first water inlet pipe and a first water outlet pipe. The heat recovery efficiency is higher, heat in hot air is in full contact with water, the heat exchange efficiency is effectively improved, and the manufacturing cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of grate coolers, in particular to a waste heat recovery system of a grate cooler. Background Art

[0002] With the development of construction technology, cement has become an indispensable raw material in the construction industry. Grate cooler is an important main equipment in the clinker burning system of cement plants. Its main function is to cool and transport cement clinker, and at the same time provide hot air for rotary kilns and decomposition furnaces. It is the main equipment for heat recovery in the burning system.

[0003] The document with the existing application publication number CN215864684U discloses a waste heat recovery system for a grate cooler, including a body and a grate plate arranged in the body, a feed port and a discharge port are arranged on the body, the feed port is located above the grate plate, and the discharge port is located at the right end of the body, an exhaust pipe is connected to the body, the exhaust pipe is connected to the inside of the body, the exhaust pipe is located above the grate plate, two brackets are arranged in the exhaust pipe, a rotating shaft is rotatably arranged between the two brackets, a plurality of rotating plates are evenly arranged on the rotating shaft along the circumferential direction, a spiral blade is arranged on the rotating shaft along the length direction, and a heat exchange pipe is sleeved on the outer side of the exhaust pipe. The utility model can recover waste heat and perform dust removal on the gas inside the pipeline between the grate cooler and the waste heat boiler, saving resources while better protecting the environment.

[0004] However, this solution still has some shortcomings. In actual use, the clinker falls freely on the grate plate, the discharge efficiency is low, the internal heat is not easy to dissipate, and the waste heat recovery rate is low. At the same time, the hot air transfers heat to the heat exchange tube through contact with the exhaust pipe. Since the contact time between the hot air and the exhaust pipe is short, the heat exchange efficiency is low.

[0005] Therefore, it is necessary to provide a grate cooler waste heat recovery system to solve the above technical problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a waste heat recovery system for a grate cooler.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a waste heat recovery system of a grate cooler, comprising a machine body, a feed bin is provided at the top left end of the machine body, a star-shaped discharger is provided between the feed bin and the machine body, an inclined grate plate is provided inside the machine body, the left end of the grate plate is higher than the right end, the left end of the grate plate is rotatably connected to the inner wall of the machine body, a support plate is provided at the lower side of the right end of the grate plate, the support plate is connected to the inner wall of the machine body, and a discharge port is provided on the right side wall of the machine body. The top right end of the machine body is connected with an air outlet pipe, and the bottom of the grate plate is provided with a vibration component; the end of the air outlet pipe away from the machine body is connected with the waste heat recovery box and the cleaning box, and a blower is connected to the outer wall of the machine body, and the output end of the blower is communicated with the inner wall of the machine body; a coil is provided inside the waste heat recovery box, the top of the coil is connected with the air outlet pipe, and the bottom of the coil extends into the cleaning box, and the side wall of the waste heat recovery box is connected with a first water inlet pipe and a first water outlet pipe.

[0008] Preferably, an air outlet branch pipe is provided at the inner bottom of the cleaning box, an air outlet nozzle is connected to the air outlet branch pipe, the bottom end of the air outlet branch pipe is connected to the bottom of the coil, the top of the cleaning box is connected to an exhaust port, a second water inlet pipe and a second water outlet pipe are connected to the side wall of the cleaning box, and an exhaust valve is provided at the bottom end of the air outlet branch pipe.

[0009] Preferably, a first motor is connected to the outside of the star-shaped discharger, and an output end of the first motor extends to the inside of the star-shaped discharger and is connected to a rotating plate.

[0010] Preferably, the vibration assembly includes a vibration box, a support rod is connected to the top of the vibration box, the support rod and the vibration box are slidably connected to each other up and down, a pulley is rotatably connected to the top of the support rod, the bottom of the support rod is connected to a base plate, a cam is provided under the base plate, a second motor is connected to the outer wall of the body, and the output end of the second motor extends to the inside of the body and is connected to the cam.

[0011] Preferably, a spring is sleeved on the support rod, and a fixed base is respectively provided on the left and right side walls of the vibration box, and the fixed base is located below the bottom plate.

[0012] Preferably, the air outlet pipe is connected to an induced draft fan, and one end of the air outlet pipe close to the machine body is connected to a filter.

[0013] Preferably, the height of the first water outlet pipe is higher than the first water inlet pipe, the height of the second water inlet pipe is higher than the second water outlet pipe, and the first water outlet pipe, the first water inlet pipe, the second water inlet pipe and the second water outlet pipe are all connected with control valves.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, the grate plate is made to reciprocate up and down and vibrate by the vibration assembly, and the left end of the grate plate is higher than the right end, so that the clinker falls more quickly, and the grate plate drives the clinker to shake up and down, so that the internal heat is more easily diffused into the machine body, and the heat recovery efficiency is higher.

[0016] 2. In the utility model, a coil is provided inside the waste heat recovery box, and water is added to the waste heat recovery box through the first water inlet pipe. The coil can make the heat in the hot air fully contact with the water, effectively improving the heat exchange efficiency. The hot water discharged from the first water outlet pipe can be used for other production, and the heat energy is fully utilized, which is conducive to saving manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front structural sectional view of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 It is a front cross-sectional view of the vibration assembly of the utility model;

[0020] Figure 4 It is a front cross-sectional view of the waste heat recovery box and the cleaning box described in the utility model.

[0021] In the figure: 1-machine body; 11-grate plate; 12-feeding bin; 13-star discharger; 14-discharge port; 15-support plate; 16-exhaust pipe; 17-first motor; 18-rotating plate; 19-filter; 2-vibration assembly; 21-vibration box; 22-support rod; 23-pulley; 24-bottom plate; 25-spring; 26-fixed base; 27-cam; 28-second motor; 3-waste heat recovery box; 31-coil; 32-first water outlet pipe; 33-first water inlet pipe; 4-cleaning box; 41-exhaust branch pipe; 42-exhaust nozzle; 43-second water inlet pipe; 44-second water outlet pipe; 45-exhaust port; 46-exhaust valve; 5-blower; 6-induced draft fan. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-Figure 4 The utility model provides an embodiment: a waste heat recovery system of a grate cooler, comprising a body 1, a feed bin 12 is provided at the top left end of the body 1, a star-shaped discharger 13 is provided between the feed bin 12 and the body 1, an inclined grate plate 11 is provided inside the body 1, the left end of the grate plate 11 is higher than the right end, the left end of the grate plate 11 is rotatably connected to the inner wall of the body 1, a support plate 15 is provided at the lower side of the right end of the grate plate 11, the support plate 15 is connected to the inner wall of the body 1, a discharge port 14 is provided on the right side wall of the body 1, an air outlet pipe 16 is connected to the top right end of the body 1, and a vibration assembly 2 is provided at the bottom of the grate plate 11; the end of the air outlet pipe 16 away from the body 1 is connected to the waste heat recovery box 3 and the cleaning box 4 The outer wall of the machine body 1 is connected to a blower 5, and the output end of the blower 5 is connected to the inner wall of the machine body 1. The waste heat recovery box 3 is provided with a coil 31, the top of the coil 31 is connected to the air outlet pipe 16, and the bottom of the coil 31 extends into the cleaning box 4. The side wall of the waste heat recovery box 3 is connected to a first water inlet pipe 33 and a first water outlet pipe 32. The waste heat recovery box 3 is provided with a coil 31, and water is added to the waste heat recovery box 3 through the first water inlet pipe 33. The coil 31 can make the heat in the hot air fully contact with the water, effectively improving the heat exchange efficiency. The hot water discharged from the first water outlet pipe 32 can be used for other production, and the thermal energy is fully utilized, which is beneficial to saving manufacturing costs.

[0026] Furthermore, an air outlet branch pipe 41 is provided at the inner bottom of the cleaning box 4, and an air outlet nozzle 42 is connected to the air outlet branch pipe 41. The bottom end of the air outlet branch pipe 41 is connected to the bottom of the coil 31, and the top of the cleaning box 4 is connected to an exhaust port 45. A second water inlet pipe 43 and a second water outlet pipe 44 are connected to the side wall of the cleaning box 4. An exhaust valve 46 is provided at the bottom of the air outlet branch pipe 41, and the exhaust valve 46 is located between the air outlet branch pipe 41 and the coil 31. Water is added to the cleaning box through the second water inlet pipe 43. Impurities in the air are precipitated to the bottom of the cleaning box after contacting with water. The dust-removed gas is discharged through the exhaust port 45, thereby achieving the purpose of dust reduction. Finally, the treated sewage is discharged through the second water outlet pipe 44.

[0027] Furthermore, the outside of the star-shaped discharger 13 is connected to a first motor 17, and the output end of the first motor 17 extends to the inside of the star-shaped discharger 13 and is connected to a rotating plate 18. The rotating plate 18 is driven to rotate by the first motor 17, thereby ensuring that the clinker in the feed bin 12 falls more evenly and avoiding clogging of the feed bin 12. At the same time, the surrounding areas of the rotating plate 18 are connected to the inner wall of the star-shaped discharger 13, thereby further improving the airtightness inside the machine body 1.

[0028] Furthermore, the vibration assembly 2 includes a vibration box 21, a support rod 22 is connected to the top of the vibration box 21, the support rod 22 and the vibration box 21 are slidably connected up and down, a pulley 23 is rotatably connected to the top of the support rod 22, a bottom plate 24 is connected to the bottom of the support rod 22, a cam 27 is provided below the bottom plate 24, a second motor 28 is connected to the outer wall of the body 1, an output end of the second motor 28 extends to the inside of the body 1 and is connected to the cam 27, a spring 25 is sleeved on the support rod 22, a fixed base 26 is respectively provided on the left and right side walls of the vibration box 21, the fixed base 26 is located below the bottom plate 24, and the cam 27 is driven to rotate by the second motor 28, and the cam The wheel 27 drives the bottom plate 24 to move upward, and the bottom plate 24 drives the support rod 22 to move upward through the compression spring 25. The support rod 22 lifts the grate plate 11 upward through the pulley 23. At the same time, when the cam 27 is separated from the bottom plate 24, the spring 25 restores its elastic deformation and drives the bottom plate 24 to move downward, so that the bottom plate 24 drives the pulley 23 to separate from the grate plate 11 through the support rod 22, and the grate plate 11 moves downward, thereby causing the grate plate 11 to reciprocate up and down and vibrate, and the left end of the grate plate 11 is higher than the right end, so that the clinker falls faster, and the grate plate 11 drives the clinker to shake up and down, the internal heat is more easily diffused into the body 1, and the heat recovery efficiency is higher.

[0029] Furthermore, the exhaust pipe 16 is connected to an induced draft fan 6, and the end of the exhaust pipe 16 close to the machine body 1 is connected to a filter 19. By providing the induced draft fan 6, the hot air in the machine body 1 can quickly flow to the waste heat recovery box 3, effectively increasing the dust removal efficiency, and the filter 19 can filter the hot air.

[0030] Furthermore, the height of the first water outlet pipe 32 is higher than the first water inlet pipe 33 , and the height of the second water inlet pipe 43 is higher than the second water outlet pipe 44 . The first water outlet pipe 32 , the first water inlet pipe 33 , the second water inlet pipe 43 and the second water outlet pipe 44 are all connected with control valves.

[0031] Working principle of the utility model: when the utility model is in use, the staff starts the first motor 17, and drives the rotating plate 18 to rotate through the first motor 17, so as to ensure that the clinker in the feeding bin 12 falls more evenly, and at the same time starts the second motor 28, and drives the cam 27 to rotate through the second motor 28, and the cam 27 drives the bottom plate 24 to move upward, and the bottom plate 24 drives the support rod 22 to move upward through the compression spring 25, and the support rod 22 pushes the grate plate 11 upward through the pulley 23. At the same time, when the cam 27 is separated from the bottom plate 24, the spring 25 restores its elastic deformation and drives the bottom plate 24 to move downward, so that the bottom plate 24 drives the pulley 23 to separate from the grate plate 11 through the support rod 22, and the grate plate 11 moves downward, so that the grate plate 11 reciprocates up and down and generates vibration. , and the grate plate 11 drives the clinker to swing up and down, so that the clinker falls more quickly, the internal heat is more easily diffused into the body 1, and the heat recovery efficiency is higher; the blower 5 blows the hot air into the waste heat recovery box 3, and a coil 31 is arranged inside the waste heat recovery box 3. Water is added to the waste heat recovery box 3 through the first water inlet pipe 33. The coil 31 can make the heat in the hot air fully contact with the water, effectively improving the heat exchange efficiency. The hot water discharged from the first water outlet pipe 32 can be used for other production. At the same time, the air containing impurities enters the cleaning box 4, and water is added to the cleaning box through the second water inlet pipe 43. The impurities in the air are precipitated to the bottom of the cleaning box after contacting with water, and the dust-removed gas is discharged through the exhaust port 45, thereby achieving the purpose of dust reduction. Finally, the treated sewage is discharged through the second water outlet pipe 44.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A grate cooler waste heat recovery system, comprising a body (1), characterized in that: A feed bin (12) is provided at the left end of the top of the machine body (1), a star-shaped discharger (13) is provided between the feed bin (12) and the machine body (1), an inclined grate plate (11) is provided inside the machine body (1), the left end of the grate plate (11) is higher than the right end, the left end of the grate plate (11) is rotatably connected to the inner wall of the machine body (1), a support plate (15) is provided at the lower side of the right end of the grate plate (11), the support plate (15) is connected to the inner wall of the machine body (1), a discharge port (14) is provided on the right side wall of the machine body (1), an air outlet pipe (16) is connected to the right end of the top of the machine body (1), and a vibration assembly (2) is provided at the bottom of the grate plate (11); One end of the air outlet pipe (16) away from the machine body (1) is connected to the waste heat recovery box (3) and the cleaning box (4); a blower (5) is connected to the outer wall of the machine body (1); and the output end of the blower (5) is connected to the inner wall of the machine body (1); A coil (31) is provided inside the waste heat recovery box (3), the top of the coil (31) is connected to the air outlet pipe (16), the bottom of the coil (31) extends into the cleaning box (4), and a first water inlet pipe (33) and a first water outlet pipe (32) are connected to the side wall of the waste heat recovery box (3).

2. A grate cooler waste heat recovery system according to claim 1, characterized in that: An air outlet branch pipe (41) is provided at the inner bottom of the cleaning box (4), an air outlet nozzle (42) is connected to the air outlet branch pipe (41), the bottom end of the air outlet branch pipe (41) is connected to the bottom of the coil (31), the top end of the cleaning box (4) is connected to an exhaust port (45), a second water inlet pipe (43) and a second water outlet pipe (44) are connected to the side wall of the cleaning box (4), and an exhaust valve (46) is provided at the bottom end of the air outlet branch pipe (41).

3. The grate cooler waste heat recovery system according to claim 1, characterized in that: The outside of the star-shaped discharger (13) is connected to a first motor (17), and an output end of the first motor (17) extends into the inside of the star-shaped discharger (13) and is connected to a rotating plate (18).

4. The grate cooler waste heat recovery system according to claim 1, characterized in that: The vibration assembly (2) comprises a vibration box (21), the top of the vibration box (21) is connected with a support rod (22), the support rod (22) and the vibration box (21) are connected to each other in an upward and downward sliding manner, the top of the support rod (22) is rotatably connected with a pulley (23), the bottom of the support rod (22) is connected with a bottom plate (24), a cam (27) is provided below the bottom plate (24), a second motor (28) is connected to the outer wall of the machine body (1), and an output end of the second motor (28) extends into the interior of the machine body (1) and is connected to the cam (27).

5. The grate cooler waste heat recovery system according to claim 4, characterized in that: A spring (25) is sleeved on the support rod (22), and a fixed base (26) is respectively provided on the left and right side walls of the vibration box (21), and the fixed base (26) is located below the bottom plate (24).

6. The grate cooler waste heat recovery system according to claim 1, characterized in that: The air outlet pipe (16) is connected to an induced draft fan (6), and one end of the air outlet pipe (16) close to the machine body (1) is connected to a filter screen (19).

7. The grate cooler waste heat recovery system according to claim 2, characterized in that: The height of the first water outlet pipe (32) is higher than the first water inlet pipe (33), the height of the second water inlet pipe (43) is higher than the second water outlet pipe (44), and the first water outlet pipe (32), the first water inlet pipe (33), the second water inlet pipe (43) and the second water outlet pipe (44) are all connected to control valves.

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