Internal rapid cooling bed structure of grate cooler

Abstract

The utility model provides a rapid cooling bed structure in a grate cooler, which relates to the field of grate coolers and comprises a support foundation formed by arranging a plurality of step plates in parallel, a plurality of fixed beams arranged on each layer of step plates from high to low and spaced from each other by a certain distance, and grate plates fixed on the fixed beams, mutually stacked parts exist between every two layers of grid plates, the fixed beams comprise a plurality of whole through long beams fixedly connected with the step plates and a plurality of non-whole through long beams, at least one notch is formed in each non-whole through long beam in the length direction, and movable beams are arranged at the positions of the notches; the driving device drives the movable beam and the grid plate on the movable beam to move back and forth along the slope direction; materials on the slope are pushed to move, and snowman is eliminated; the device has the beneficial effects that snowmen can be removed without tapping the grate cooler, the sealing performance in the grate cooler is guaranteed, cold air is not brought in in the snowman removing process, stable operation of a system is guaranteed, and materials are not leaked.

Description

Technical Field

[0001] The utility model belongs to the field of grate coolers, in particular to a rapid cooling bed structure in a grate cooler. Background Art

[0002] In the new dry process cement production line, the grate cooler is one of the core equipment of the firing system and is a thermal equipment used to recover heat from the clinker out of the kiln. Among the mainstream grate coolers on the market, they can be divided into stepping grate coolers, pusher rod grate coolers, pendulum grate coolers, etc. based on the clinker conveying form. Regardless of the structural form of the grate cooler, the grate bed or pusher rod is used as the clinker conveying device to transport the clinker from the quenching bed at the front end to the grate cooling bed at the rear end; the wind exchanges heat with the high-temperature clinker to achieve gradual cooling of the high-temperature clinker.

[0003] In actual production, it is found that during the feeding process of clinker to the quench bed in the grate cooler, clinker accumulates on the sloped quench bed, forming a "snowman" that cannot be transported away, causing it to pile up higher and higher. In severe cases, it can block the kiln mouth, making it impossible to remove the materials in the kiln, seriously affecting the normal production of cement. In order to solve the problem of "snowmen" on the slope, air cannons and external snowman pushers are generally used. The air cannon is arranged around the quench bed, and the compressed air released instantly is used to bombard the "snowman", knocking the "snowman" down or eliminating the basis for the formation of the "snowman". The use of air cannons will bring in a certain amount of cold air, reduce the secondary air temperature, and cannot remove the larger "snowmen" that have been formed. The external snowman pusher is arranged on the outside of the front shell of the grate cooler, and the snowman on the slope of the grate cooler is removed by the reciprocating motion of the pusher plate. The external snowman pusher can effectively remove the "snowman" on the quenching bed, but there are also certain shortcomings in the use process. Since the external snowman is arranged outside the grate cooler housing, it is necessary to open a hole in the grate cooler housing to facilitate the passage of the pusher plate, but the sealing device here cannot be effectively maintained. As the number of operations increases, the seal deteriorates sharply. Not only is it easy for cold air to enter from here, reducing the secondary air temperature, affecting the stable operation of the system, and increasing heat consumption; but the internal materials are also easy to leak out, making the surrounding environment worse and consuming manual cleaning costs. In order to solve the pain point of removing "snowmen" in the current industry, this device is specially developed. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a rapid cooling bed structure in a grate cooler which can push down the snowman without introducing cold air or opening holes in the grate cooler to install air cannons.

[0005] The technical solution of the utility model is:

[0006] A quenching bed structure in a grate cooler, comprising a supporting base composed of a plurality of step plates arranged in parallel, a plurality of fixed beams arranged from high to low on each layer of the step plates and having a certain distance between each other, and a grate plate fixed on the fixed beams; there are mutually overlapping parts between each layer of the grate plates, and the grate plates are in a slope shape as a whole, the fixed beams include a plurality of full-length beams fixedly connected to the step plates and a plurality of incomplete full-length beams, at least one notch is provided in the length direction of the plurality of incomplete full-length beams, a moving beam is provided at the notch position, and a driving device drives the moving beam and the grate plate on the upper part to move back and forth along the slope direction;

[0007] Further, a gap δ is provided between the two sides of the movable beam and the fixed beam, and the gap δ is 3-5 mm, preferably 3 mm;

[0008] The driving device is fixed on the step plate through a fixing plate, and can be driven by a servo motor or the following driving mode, including a driver, a bearing seat, an eccentric wheel, and a bearing. The fixing plate is fixed on the step plate, the bearing seat is fixedly connected to the fixing plate, the bearing is connected to the bearing seat, the bottom end of the bearing is connected to the driving shaft of the driver, the top end of the bearing is connected to the eccentric wheel, a long groove is provided on the moving beam, the eccentric wheel is fixed in the long groove, and drives the moving beam and the grate plate on its upper part to move back and forth along the slope direction;

[0009] Furthermore, two guide shafts penetrating the moving beam are fixed on the fixed beam in the front and rear directions of the moving beam, and the moving beam is connected to the guide shafts through guide sleeves, and the guide shafts serve as supports for the moving beam.

[0010] The driver drives the driving shaft, the bearing and the eccentric wheel to move, and the eccentric wheel drives the moving beam and the grate plate on the upper part to move back and forth along the guide shaft, so as to push the materials on the slope to move.

[0011] The stroke of the moving beam and the length of the overlapping parts between each layer of grate plates can be set as needed. The stroke of the moving amount, that is, the spacing between each layer of step plates is 30-100cm. Preferably, the stroke of the moving beam is 60mm.

[0012] Preferably, the number of the step plates is 11, the number of the fixed beams is 7, and from high to low they are fixed beam 1, fixed beam 2, fixed beam 3, fixed beam 4, fixed beam 5, fixed beam 6, and fixed beam 7, wherein the fixed beam 1, fixed beam 3, fixed beam 6, and fixed beam 7 are whole-length beams, and the fixed beam 2, fixed beam 4, and fixed beam 5 are non-whole-length beams;

[0013] Furthermore, two notches are provided at different positions on the non-entire length beam;

[0014] Or the fixed beams in the odd numbered columns are full-length beams, and the fixed beams in the even numbered columns are part-full-length beams;

[0015] Further, the grate plates on the movable beam are stacked on the grate plates of the adjacent full-length beams;

[0016] Furthermore, the controller controls the on / off state of the driver.

[0017] The beneficial effects of the utility model are:

[0018] By changing the overall structure of the quenching bed and setting up multiple moving beams to drive the grate plate on its upper part to move back and forth to push down the snowman, the pain point of removing the "snowman" in the industry is solved. We can remove the snowman without opening holes in the grate cooler to ensure the sealing inside the grate cooler. Since no external air is introduced, the cleaning process ensures stable operation of the system and no material leakage.

[0019] There are two guide shafts as supports for the moving beam, which play a balancing role. The driving device drives the moving beam to move back and forth on the guide shaft, and the driver further drives the driving shaft, bearings, and eccentric wheels to move. The eccentric wheel drives the moving beam and the grate plate on its upper part to move back and forth along the guide shaft, pushing the material on the slope to achieve the effect of pushing a snowman.

[0020] Since the travel of the moving beam and the length of the overlapping parts between each layer of grate plates can be set as needed, materials at different positions can be pushed. The preferred travel of the moving beam is 60mm.

[0021] There are 11 step plates and 7 fixed beams. Fixed beam 2, fixed beam 4 and fixed beam 5 are non-full-length beams. Two notches are opened at different positions on the non-full-length beams. Therefore, the above 6 movable beams can basically complete the knocking down of all snowmen without consuming much electricity.

[0022] The grate plates on the moving beams are stacked on the grate plates of the adjacent full-length beams, which is more conducive to pushing snowmen at different upper and lower positions. Furthermore, when several layers of moving beams are respectively arranged at different positions and are not aligned with each other, it is more conducive to pushing down snowmen at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial cross-section diagram of the structure of the rapid cooling bed in the grate cooler;

[0024] Figure 2 This is a partial layout diagram of the rapid cooling bed structure in the grate cooler;

[0025] Figure 3 This is a bottom view of the rapid cooling bed structure in the grate cooler;

[0026] Figure 4 It is a top view, side view and sectional view;

[0027] Figure 5 is a schematic diagram of the drive device;

[0028] Figure 6 It is a schematic diagram of the mobile beam layout;

[0029] In the figure:

[0030] 1. Step plate 2. Fixed beam 3. Grate plate

[0031] 4. Moving beam 5. Gap δ 6. Driving device

[0032] 7. Fixed plate 6-1, driver 6-2, bearing seat

[0033] 6-3, eccentric wheel 6-4, bearing 8, guide shaft

[0034] 9. Guide sleeve 2-1, fixed beam 1 2-2, fixed beam 2

[0035] 2-3, fixed beam three 2-4, fixed beam four 2-5, fixed beam five

[0036] 2-6, fixed beam six 2-7, fixed beam seven 10, long groove DETAILED DESCRIPTION

[0037] This embodiment is a rapid cooling bed structure in a grate cooler, such as Figure 2 As shown, it includes a supporting foundation composed of 11 step plates 1 arranged in parallel, 7 fixed beams 2 arranged from high to low on each layer of the step plates 1 and with a certain distance between each other, and grate plates 3 fixed on the fixed beams 2; there are overlapping parts between the grate plates 3 in each layer, and the grate plates 3 are sloped as a whole, and the fixed beams 2 are fixed beam one 2-1, fixed beam two 2-2, fixed beam three 2-3, fixed beam four 2-4, fixed beam five 2-5, fixed beam six 2-6, and fixed beam seven 2-7 from high to low, and the fixed beam one 2-1, fixed beam three 2-3, fixed beam six 2-6, and fixed beam seven 2-7 are whole-length beams, and fixed beam two 2-2, fixed beam four 2-4, and fixed beam five 2-5 are non-whole-length beams. Figure 6 As shown, two notches are provided in the length direction of the non-entire length beam, and a movable beam 4 is provided at the notch position. A gap δ5 is provided between the two sides of the movable beam 4 and the fixed beam 2, and the gap is 3 mm; the driving device 6 drives the movable beam 4 and the grate plate 3 on the upper part to move back and forth along the slope direction; further, as Figure 1-Figure 3 As shown, the spacing between each layer of the step plates 1 is the distance of the movable beam 4, the length of the overlapping portion between each layer of the grate plates 3 can be set as needed, and the stroke of the movable beam 4 is 60 mm in this case;

[0038] Further, if Figure 5 As shown, the driving device 6 is fixed on the step plate 1 through a fixing plate 7, and can be driven by a servo motor or the following driving mode, including a driver 6-1, a bearing seat 6-2, an eccentric wheel 6-3, and a bearing 6-4. The fixing plate 7 is fixed on the step plate 1, the bearing seat 6-2 is fixedly connected to the fixing plate 7, the bearing 6-4 is connected to the bearing seat 6-2, the bottom end of the bearing 6-4 is connected to the driving shaft of the driver 6-1, the top end of the bearing 6-4 is connected to the eccentric wheel 6-3, and the moving beam 4 is provided with a long groove 10, the eccentric wheel 6-3 is fixed in the long groove 10, and drives the moving beam 4 and the grate plate 3 on its upper part to move back and forth along the slope direction;

[0039] Further, if Figure 4 As shown, two guide shafts 8 penetrating the moving beam 4 are fixed on the fixed beam 2 in the front-rear direction of the moving beam 4. The moving beam 4 is connected to the guide shafts 8 through guide sleeves 9. The guide shafts 8 serve as supports for the moving beam 4. The controller controls the on / off state of the driver 6-1.

[0040] During normal production, the moving beam 4 is in a stationary state. If a "snowman" is formed on the slope, the driver 6-1 can be manually turned on or turned on by the controller. The driver 6-1 drives the drive shaft, bearing 6-4, and eccentric wheel 6-3 to move. Under the driving action of the eccentric wheel 6-3, the moving beam 4 and the grate plate 3 on its upper part move back and forth along the guide shaft 8. Since there are overlapping parts between the grate plates 3 and the moving beam 4 is spaced apart from other fixed beams 2, the grate plate 3 protruding from the moving beam 4 is inserted under the material on the other grate plates 3, pushing the material on the front and rear slope-shaped grate plates 3 to move, pushing down and removing the "snowman" on the slope. After the "snowman" is removed, the driver 6-1 stops running and the moving beam 4 returns to its initial state. Multiple groups of moving beams 4 can be opened synchronously on site as needed, or a certain moving beam 4 can be opened separately.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A rapid cooling bed structure in a grate cooler, characterized in that: It includes a supporting base composed of a plurality of step plates arranged in parallel, a plurality of fixed beams arranged from high to low on each layer of the step plates and with a certain distance between each other, and a grate plate fixed on the fixed beams; there are mutually overlapping parts between the grate plates on each layer, and the fixed beams include a plurality of full-length beams fixedly connected to the step plates and a plurality of incomplete full-length beams, and at least one notch is provided in the length direction of the plurality of incomplete full-length beams, and a moving beam is provided at the position of the notch, and a driving device drives the moving beam and the grate plate on the upper part to move back and forth along the slope direction.

2. The rapid cooling bed structure in a grate cooler according to claim 1, characterized in that: The driving device is fixed on the step plate through a fixed plate, and is driven by a servo motor or the following driving method, including a driver, a bearing seat, an eccentric wheel, and a bearing. The fixed plate is fixed on the step plate, the bearing seat is fixedly connected to the fixed plate, the bearing is connected to the bearing seat, the bottom end of the bearing is connected to the driving shaft of the driver, the top end of the bearing is connected to the eccentric wheel, a long groove is provided on the moving beam, the eccentric wheel is fixed in the long groove, and drives the moving beam and the grate plate on its upper part to move back and forth along the slope direction.

3. The rapid cooling bed structure in a grate cooler according to claim 2, characterized in that: Two guide shafts passing through the moving beam are fixed on the fixed beam in the front and rear directions of the moving beam. The moving beam is connected to the guide shaft through a guide sleeve. The guide shaft serves as a support for the moving beam. The driver drives the drive shaft, bearings and eccentric wheel to move. The eccentric wheel drives the moving beam and the grate plate on its upper part to move back and forth along the guide shaft, thereby pushing the material on the slope to move.

4. The rapid cooling bed structure in a grate cooler according to claim 3, characterized in that: The distance between each layer of step plates is 30-100cm.

5. The rapid cooling bed structure in a grate cooler according to claim 4, characterized in that: The travel of the moving beam is 60 mm.

6. The rapid cooling bed structure in a grate cooler according to claim 5, characterized in that: The number of the fixed beams is 7, which are fixed beam one, fixed beam two, fixed beam three, fixed beam four, fixed beam five, fixed beam six, and fixed beam seven from high to low. Fixed beam one, fixed beam three, fixed beam six, and fixed beam seven are whole-length beams, and fixed beam two, fixed beam four, and fixed beam five are non-whole-length beams.

7. The rapid cooling bed structure in a grate cooler according to claim 6, characterized in that: Two notches are provided at different positions on the non-entire-length beam.

8. A rapid cooling bed structure in a grate cooler according to claim 5, 6 or 7, characterized in that: A gap δ is provided between the two sides of the movable beam and the fixed beam, and the gap δ is 3-5 mm.

9. A rapid cooling bed structure in a grate cooler according to any one of claims 1 to 5, characterized in that: The fixed beams in odd-numbered columns are full-length beams, and the fixed beams in even-numbered columns are part-full-length beams.

10. The rapid cooling bed structure in a grate cooler according to claim 8, characterized in that: The grate plates on the moving beam are stacked on the grate plates of the adjacent full-length beams.

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