Self-flowing type ultra-short grate cooler

Abstract

The self-flowing type ultra-short grate cooler comprises an air bellow and a device shell, the top of the air bellow is provided with the device shell, the bottom of the back face of the device shell is provided with an extension plate, the top of the extension plate is fixedly connected with an air storage tank, the two sides of the top of the air storage tank extend to form air inlet pipes, and the other ends of the air inlet pipes are connected with an air outlet pipe on the top of the device shell. The material cooling device is suitable for a system which is limited in material cooling arrangement space and needs to carry out primary cooling and heat recovery on products. A plurality of rows of fixed second grate plates and a single row of movable first grate plates are arranged in the device shell, high-temperature materials enter the grate cooler and then are piled into a material layer with a certain thickness on the inclined grate bed, and the high-temperature materials are conveyed to the grate cooler under the fluidization and self weight of cooling air penetrating through the second grate plates and the driving of the last row of movable first grate plates. And the high-temperature material is cooled and slowly flows out of the grate cooler. The grate cooler is small in occupied area, high in heat exchange efficiency and low in energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of grate coolers, in particular to a self-flowing ultra-short grate cooler. Background Art

[0002] Grate cooler is an important main equipment in the clinker burning system of cement plant. Its main function is to cool and transport cement clinker. At the same time, it provides hot air for rotary kiln and decomposition furnace, and is the main equipment for heat recovery in the burning system. After the clinker enters the cooler from the kiln, it is spread on the grate plate to form a material layer of a certain thickness. The cold air blown in passes through the material layer moving on the grate bed in a perpendicular direction to cool the clinker suddenly. The clinker can be cooled from 1300-1400℃ to below 100℃ within a few minutes.

[0003] Existing grate coolers for cement production generally have problems such as poor cooling efficiency, high energy consumption, and low heat utilization efficiency when cooling cement raw materials. In addition, grate coolers occupy a large area, so improvements are needed. Utility Model Content

[0004] The utility model aims to provide a self-flowing ultra-short grate cooler to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A self-flowing ultra-short grate cooler, comprising a bellows and a device shell, wherein the device shell is arranged on the top of the bellows, the cross section of the device shell is an inverted "L" shape, a feed pipe is arranged at the center of the top high side of the device shell, a fluid one-way valve is arranged on the top of the feed pipe, a feed funnel is arranged on the top of the fluid one-way valve, an extension plate is arranged at the bottom of the back of the device shell, an air storage tank is fixedly connected to the top of the extension plate, an air inlet pipe extends from both sides of the top of the air storage tank, and outlet pipes are arranged on both sides of the top low side of the device shell. The air pipe is provided with a first connecting sleeve on the top of the air outlet pipe, a second connecting sleeve is provided on the other end of the air inlet pipe, an expansion tube is provided on the surface of the air outlet pipe, an air filter element is provided inside the expansion tube, an extension ring is provided on the top of the air filter element, a fixing plate is provided on the top of the extension ring, the bottom of the fixing plate is located at the top of the air outlet pipe and is fixedly connected by fixing bolts, the bottom of the second connecting sleeve is in contact with the top of the fixing plate, and the first connecting sleeve and the second connecting sleeve are connected by fixing bolts.

[0007] Preferably, an air outlet fan is provided at the inner bottom of the air outlet pipe.

[0008] Preferably, grate beds are obliquely arranged at the front and rear ends of the device shell, the high end side of the grate bed is located below the feed pipe, and a discharge port is provided at the low end side of the grate bed and located at the device shell.

[0009] Preferably, a telescopic cylinder is provided on the inner bottom discharge port side of the device shell, a first grate plate is fixedly connected to the top of the telescopic cylinder, a plurality of first connecting rods are sequentially arranged laterally on the top of the grate bed, and a second grate plate is arranged on the top of the first connecting rods.

[0010] Preferably, the first grate plate mounting location is connected to the internal front end and rear end of the device housing via a rotating shaft, and the second grate plate mounting location is connected to the internal front end and rear end of the device housing via a second connecting rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is a self-flowing ultra-short grate cooler, which is suitable for systems where the material cooling arrangement space is limited and the product needs to be initially cooled and heat recovered. The device shell includes multiple rows of fixed second grate plates and a single row of movable first grate plates. After the high-temperature material enters the grate cooler, it is piled into a material layer of a certain thickness on the inclined grate bed. Under the fluidization of the cooling air passing through the second grate plate, the dead weight and the last row of movable first grate plates, the high-temperature material out of the kiln is cooled and slowly flows out of the grate cooler. The grate cooler occupies a small area, has high heat exchange efficiency and low energy consumption.

[0013] The utility model discloses a self-flowing ultra-short grate cooler, in which an air outlet pipe is fixedly connected to the inner bottom of the air outlet pipe. The air outlet blower blows the internal gas of the device shell into the air outlet pipe, so that the high-temperature air in the cooling process can be better blown into the air outlet pipe, thereby further improving the heat exchange efficiency. An expansion pipe is expanded at a certain point on the surface of the air outlet pipe, and an air filter element is arranged inside the expansion pipe. The air filter element can filter the air in the air outlet pipe, thereby ensuring that the recovered high-temperature gas is relatively pure, which is beneficial for the factory to use the high-temperature air in many suitable places.

[0014] The utility model discloses a self-flowing ultra-short grate cooler, in which a fluid one-way valve is arranged at a feed hopper and a feed pipe. The fluid one-way valve can allow high-temperature materials to enter the feed pipe from the feed hopper, and after the feeding is completed, the high-temperature air in the device shell will not escape from the feed pipe, so that the high-temperature gas flows from the outlet pipe into the gas storage tank, thereby improving energy utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2It is a schematic diagram of the cross-sectional structure of the device shell of the utility model.

[0017] In the figure: 1. feed pipe; 2. fluid one-way valve; 3. feed funnel; 4. bellows; 5. device housing; 6. discharge port; 7. extension plate; 8. air storage tank; 9. air inlet pipe; 10. air outlet pipe; 11. expansion pipe; 12. first connecting sleeve; 13. second connecting sleeve; 14. air filter element; 15. extension ring; 16. fixing plate; 17. telescopic cylinder; 18. first grate plate; 19. grate bed; 20. first connecting rod; 21. rotating shaft; 22. second connecting rod; 23. air outlet fan; 24. second grate plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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.

[0021] See also Figure 1-2 , the utility model provides a technical solution:

[0022] A flow type ultra-short grate cooler, comprising a bellows 4 and a device shell 5. The device shell 5 is arranged on the top of the bellows 4. The cross section of the device shell 5 is an inverted "L" shape. A feed pipe 1 is arranged at the center of the top high side of the device shell 5. A fluid one-way valve 2 is arranged on the top of the feed pipe 1. A feed funnel 3 is arranged on the top of the fluid one-way valve 2. An extension plate 7 is arranged at the bottom of the back of the device shell 5. An air storage tank 8 is fixedly connected to the top of the extension plate 7. Inlet pipes 9 extend from both sides of the top of the air storage tank 8. Air outlet pipes 10 are arranged on both sides of the top low side of the device shell 5. The air outlet pipe 10 A first connecting sleeve 12 is fixedly provided at the top of the air inlet pipe 9, a second connecting sleeve 13 is provided at the other end of the air inlet pipe 9, an expansion tube 11 is provided on the surface of the air outlet pipe 10, an air filter element 14 is provided inside the expansion tube 11, an extension ring 15 is provided on the top of the air filter element 14, a fixing plate 16 is provided on the top of the extension ring 15, the bottom of the fixing plate 16 is located at the top of the air outlet pipe 10 and is fixedly connected by fixing bolts, the bottom of the second connecting sleeve 13 is in contact with the top of the fixing plate 16, and the first connecting sleeve 12 and the second connecting sleeve 13 are connected by fixing bolts.

[0023] Furthermore, a blower 23 is provided at the inner bottom of the air outlet pipe 10, and the blower 23 discharges the air in the device housing 5 to the outside, thereby further improving the heat exchange efficiency.

[0024] Furthermore, grate beds 19 are obliquely arranged at the front and rear ends of the device housing 5 , the high end side of the grate bed 19 is located below the feed pipe 1 , and a discharge port 6 is provided at the low end side of the grate bed 19 and located at the device housing 5 .

[0025] Furthermore, a telescopic cylinder 17 is provided on the side of the internal bottom discharge port 6 of the device shell 5, and a first grate plate 18 is fixedly connected to the top of the telescopic cylinder 17. A plurality of first connecting rods 20 are sequentially arranged laterally on the top of the grate bed 19, and a second grate plate 24 is arranged on the top of the first connecting rod 20.

[0026] Furthermore, the first grate plate 18 is connected to the front and rear ends of the device housing 5 via a rotating shaft 21 , and the second grate plate 24 is connected to the front and rear ends of the device housing 5 via a second connecting rod 22 .

[0027] Working principle: The utility model is suitable for systems where the material cooling arrangement space is limited and the product needs to be initially cooled and heat recovered. The device housing 5 includes multiple rows of fixed second grate plates 24 and a single row of movable first grate plates 18. After the high-temperature material enters the grate cooler, it is piled into a material layer of a certain thickness on the inclined grate bed. Under the fluidization of the cooling air passing through the grate plate, the dead weight and the last row of movable grate plates, the high-temperature material out of the kiln is cooled and slowly flows out of the grate cooler. The grate cooler occupies a small area, has high heat exchange efficiency and low energy consumption.

[0028] The bottom of the inner part of the air outlet pipe 10 of the utility model is fixedly connected with an air outlet fan 23, and the air outlet fan 23 blows the internal gas of the device shell 5 into the air outlet pipe 10, so that the high-temperature air in the cooling process can be better blown into the air outlet pipe 10, thereby further improving the heat exchange efficiency. An expansion tube 11 is expanded at a certain point on the surface of the air outlet pipe 10, and an air filter element 14 is arranged inside the expansion tube 11. The air filter element 14 can filter the air in the air outlet pipe 10, thereby ensuring that the recovered high-temperature gas is relatively pure, which is beneficial for the factory to use the high-temperature air in many suitable places.

[0029] In addition, a fluid one-way valve 2 is provided between the feed funnel 3 and the feed pipe 1. The fluid one-way valve 2 can allow the high-temperature material to enter the feed pipe 1 from the feed funnel 3, and after the feeding is completed, the high-temperature air located in the device shell 5 will not escape from the feed pipe 1, so that the high-temperature gas flows from the outlet pipe 10 into the gas storage tank 8, thereby improving energy utilization.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-flowing ultra-short grate cooler, comprising a bellows (4) and a device housing (5), characterized in that: A device housing (5) is arranged on the top of the bellows (4), and the cross section of the device housing (5) is in an inverted "L" shape. A feed pipe (1) is arranged at the center of the top high side surface of the device housing (5), and a fluid one-way valve (2) is arranged on the top of the feed pipe (1). A feed funnel (3) is arranged on the top of the fluid one-way valve (2). An extension plate (7) is arranged on the bottom of the back of the device housing (5), and an air storage tank (8) is fixedly connected to the top of the extension plate (7). Air inlet pipes (9) extend from both sides of the top of the air storage tank (8). Air outlet pipes (10) are arranged on both sides of the top low side surface of the device housing (5), and the top of the air outlet pipe (10) is fixedly sleeved with a gas storage tank (8). A first connecting sleeve (12) is arranged, a second connecting sleeve (13) is arranged at the other end of the air inlet pipe (9), an expansion tube (11) is arranged on the surface of the air outlet pipe (10), an air filter element (14) is arranged inside the expansion tube (11), an extension ring (15) is arranged at the top of the air filter element (14), a fixing plate (16) is arranged at the top of the extension ring (15), the bottom of the fixing plate (16) is located at the top of the air outlet pipe (10) and is fixedly connected by fixing bolts, the bottom of the second connecting sleeve (13) is in contact with the top of the fixing plate (16), and the first connecting sleeve (12) and the second connecting sleeve (13) are connected by fixing bolts.

2. A self-flowing ultra-short grate cooler according to claim 1, characterized in that: An air outlet fan (23) is arranged at the inner bottom of the air outlet pipe (10).

3. A self-flowing ultra-short grate cooler according to claim 1, characterized in that: A grate bed (19) is obliquely arranged at the front and rear ends of the device housing (5); the high end side of the grate bed (19) is located below the feed pipe (1); and a discharge port (6) is provided at the low end side of the grate bed (19) and located at the device housing (5).

4. A self-flowing ultra-short grate cooler according to claim 3, characterized in that: A telescopic cylinder (17) is arranged on the side of the discharge port (6) at the bottom of the device housing (5), a first grate plate (18) is fixedly connected to the top of the telescopic cylinder (17), a plurality of first connecting rods (20) are arranged in sequence along the lateral direction on the top of the grate bed (19), and a second grate plate (24) is arranged on the top of the first connecting rod (20).

5. A self-flowing ultra-short grate cooler according to claim 4, characterized in that: The mounting point of the first grate plate (18) is connected to the front end and the rear end of the device housing (5) via a rotating shaft (21), and the mounting point of the second grate plate (24) is connected to the front end and the rear end of the device housing (5) via a second connecting rod (22).

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