Twin coupling energizing T-shaped grate bed with efficient cooling and accurate conveying functions

Abstract

The invention discloses a twin coupling energizing efficient cooling and accurate conveying T-shaped grate bed, which comprises efficient grate plates, block-free section beams and shallow and wide inter-column seals, a plurality of rows of block-free section beams are arranged, the efficient grate plates are arranged on the block-free section beams, the shallow and wide inter-column seals are arranged between the two block-free section beams, and trapezoidal rods are arranged on the block-free section beams. The device has the beneficial effects that the segregation distribution of clinker is improved, the resistance and path of material leakage are increased, and the material leakage prevention effect is improved; the conveying capacity of clinker, especially the conveying capacity of bottom cold clinker, is comprehensively enhanced, the operation frequency is reduced, a limited space structure is eliminated, additional abrasion is reduced, and the service life of quick-wear parts is prolonged; a dead material layer is effectively reduced, upper-layer clinker and lower-layer clinker are fully stirred and activated, a gas-solid interface layer is more easily broken, turbulence is strengthened, efficient cooling is achieved, and cooling power consumption is reduced; the technology has the characteristics of a stepping type and a material pushing rod type, twin coupling of cooling and conveying functions is achieved, mutual promotion is achieved, and the performance of the T-shaped grate bed is greatly improved.

Description

Technical Field

[0001] The present application belongs to the technical field of building materials, and specifically relates to a T-type grate bed with twin coupling enabling efficient cooling and precise transportation. Background Art

[0002] In the building materials industry, grate coolers are often used to transport and cool high-temperature clinker. At present, grate coolers have developed to the fourth generation. However, the fourth generation of grate coolers is flourishing and has not formed a unified technical style. It can be divided into the following two categories according to the movement characteristics of the grate bed: The grate bed moving type represented by Delta, ηCooler, Sinowalk, PLUS, etc., the grate bed of this type of grate cooler is divided into several columnar units. First, all the columnar units move forward at once, driving the overall movement of the clinker, and then the columnar units staggered back in three steps (complete a cycle of movement, and so on and so forth), and part of the clinker can also be transported under the friction of the staggered movement of the columnar units. The grate bed fixed type represented by S grate cooler and Cross-Bar Cooler, this type of grate cooler uses scrapers and push rods to transport clinker.

[0003] The grate bed moving type step-type grate cooler has a relatively simple structure, high reliability, high synchronization rate with the kiln, few wearing parts and easy maintenance. However, this type of grate cooler is designed with a baffle plate, and there is a very high dead material layer on the grate bed. In addition, due to its conveying principle, the clinker at the bottom of the grate bed is difficult to convey. As for the clinker on the grate bed, the cooling air enters along the grate plate under the grate bed and cools the clinker. After heat exchange with the clinker, the cooling air is blown out from the clinker on the top. According to Newton's cooling law, the heat exchange efficiency is proportional to the thermal gradient, that is, the clinker at the bottom of the grate bed cools faster than the clinker on the top of the grate bed. However, the existing step-type grate cooler has the problem of difficulty in conveying the bottom clinker, that is, the effectively cooled bottom clinker is not effectively conveyed, while the upper clinker is easy to convey. This way of conveying and cooling coordination is unreasonable, resulting in a high dead material layer, large resistance, high cooling power consumption, and poor comprehensive cooling heat exchange efficiency. In addition, since the grate bed moving type step-type grate cooler does not have the function of stirring and homogenizing, it cannot effectively change the state of segregation distribution when facing the clinker segregation distribution, resulting in a weak ability to adapt to segregation conditions. In addition, the existing step-type grate cooler is generally designed with a baffle plate, resulting in a narrow and limited space between the inter-row seal and the baffle plate or grate plate. When the inter-row traveling units move relative to each other, there is strong extrusion wear between the inter-row seal and the baffle plate or grate plate associated with the limited space. This extrusion wear is more serious than the wear in the open space, which greatly reduces the service life of the related parts and components, and there is also a risk of leakage due to extrusion.

[0004] The grate cooler with a fixed grate bed uses scrapers or pusher rods to convey clinker. Such a grate cooler can effectively convey the cold material at the bottom of the grate bed, has a certain homogenizing and stirring effect, and can also assist in efficient cooling. However, the single-point cantilevered scraper or pusher rod is prone to wear, increasing the replacement frequency of vulnerable parts and the operation and maintenance costs. In addition, such a grate cooler has a relatively complex transmission structure, many fault points, a relatively low synchronous operation rate with the kiln, and a relatively high maintenance difficulty.

[0005] For the grate cooler, cooling and conveying are the two most core functions, and also the main functions of the grate bed, which is the core component of the grate cooler. Prioritize and promptly convey the clinker with faster cooling, and slowly convey the clinker with slower cooling to increase the cooling time. In this way, cooling and conveying are efficiently coordinated to form a twin-coupling design of efficient cooling and precise conveying, which can effectively improve the conveying efficiency of the grate cooler, especially the conveying efficiency of the cold material at the bottom, realize the function of homogenizing and cooling the upper and lower clinkers, improve the cooling capacity, and promote efficient heat transfer. The two main functions promote each other, enabling new breakthroughs in the twin cooling and conveying performances, laying a foundation for the development of a new generation of grate coolers, and having very important significance.

[0006] In summary, the main problems of the existing grate beds are as follows:

[0007] 1. There is a narrow and limited space between the inter-column seals of the step-type movable grate bed and the baffle or grate plate, resulting in extrusion leakage and additional wear, affecting the service life of core components such as inter-column seals and grate plates.

[0008] 2. The dead material layer of the step-type movable grate bed is high, the dead material resistance is large, and the cooling power consumption is high.

[0009] 3. The conveying capacity of the step-type movable grate bed is relatively weak, the number of operations is relatively high, and the rapid cyclic operation leads to increased wear.

[0010] 4. The conveying capacity of the cold clinker at the bottom of the step-type movable grate bed is weak, while the conveying capacity of the hot clinker at the upper part is strong, and the twin-coupling performance of the cooling and conveying function design is poor.

[0011] 5. The step-type movable grate bed has almost no function of stirring and flipping the clinker, has a weak ability to adapt to the working condition of clinker particle segregation, and the effect of assisting efficient heat transfer is also relatively poor.

[0012] 6. The grate bed with fixed pusher rods has poor reliability, many fault points, is prone to wear, and has high operation and maintenance costs. Summary of the Invention

[0013] The purpose of this application is to provide a T-shaped grate bed with twin-coupling empowerment for efficient cooling and precise conveying, which solves many drawbacks of traditional grate beds.

[0014] The purpose of this application is achieved through the following technical solutions:

[0015] A T-shaped grate cooler with twin coupling empowerment for efficient cooling and precise conveying, including efficient grate plates, and also including non-blocking section beams and shallow-wide inter-column seals. The non-blocking section beams are arranged in several columns. The efficient grate plates are provided on the non-blocking section beams. A shallow-wide inter-column seal is provided between two adjacent non-blocking section beams. An open space is formed above the efficient grate plates and the shallow-wide inter-column seals.

[0016] Further, the shallow-wide inter-column seal includes a sealing U-shaped part and a sealing L-shaped part. A loop-shaped sealing channel is formed among the efficient grate plate, the sealing U-shaped part and the sealing L-shaped part.

[0017] Further, the left side of the sealing U-shaped part is fixedly connected to the left section beam through a sunken fastener, and the right side of the sealing L-shaped part is fixedly connected to the right section beam through a sunken fastener; an open space is formed above the sealing U-shaped part, the sealing L-shaped part and the efficient grate plate. There is no small-gap contact and no grooved limited space among the sealing U-shaped part, the sealing L-shaped part and the efficient grate plate.

[0018] Further, a transverse gap channel of h1 is formed between the right bottom back surface of the sealing U-shaped part and the right bottom surface of the sealing L-shaped part, a longitudinal gap channel of n is formed between the right side surface of the sealing U-shaped part and the left side surface opposite to the left side of the sealing L-shaped part, a transverse gap channel of h2 is formed between the back surface of the middle groove of the sealing U-shaped part and the left top surface of the sealing L-shaped part, a longitudinal gap channel of n is formed between the left side surface of the sealing U-shaped part and the left side surface opposite to the left side of the sealing L-shaped part, and a transverse contact channel of h3 is formed between the left bottom back surface of the sealing L-shaped part and the bottom surface of the efficient grate plate.

[0019] Further, a height H is formed between the top surface of the efficient grate plate and the top surface of the sealing U-shaped part. H is 25 - 50 mm. The U-shaped width of the sealing U-shaped part is L. L is 20 - 50 mm. h1 is 0.5 - 1.5 mm. h2 is 0.5 - 1.5 mm. n is 1 - 2.5 mm. h3 is 0.2 - 0.5 mm.

[0020] Further, it also includes a grate cooler movement mode A and a grate cooler movement mode B, and the two movement modes are switched or alternately operated;

[0021] Grate cooler movement mode A: First step, all columns of non-blocking section beams move forward. Second step, the non-blocking section beams of columns 1, 4 and 7 retreat. Third step, the non-blocking section beams of columns 2, 5 and 8 retreat. Fourth step, the non-blocking section beams of columns 3, 6 and 9 retreat;

[0022] Grate cooler movement mode B: First step, all columns of non-blocking section beams move forward. Second step, the non-blocking section beams of odd-numbered columns retreat. Third step, the non-blocking section beams of even-numbered columns retreat.

[0023] Further, it also includes trapezoidal rods provided on the non-blocking section beams.

[0024] Further, the trapezoidal rods are fixedly connected to the non-blocking section beams through sunken fasteners, or the trapezoidal rods are fixedly connected to the non-blocking section beams through rabbets.

[0025] Further, several rows of trapezoidal rods are provided, and the front and rear rows of trapezoidal rods are arranged staggeredly.

[0026] Further, the trapezoidal rods include left trapezoidal rods, middle trapezoidal rods and right trapezoidal rods. The left end of the left trapezoidal rod is flush with the end face of the leftmost non-blocking section beam. The two ends of the middle trapezoidal rod extend above the adjacent two non-blocking section beams. The right end of the right trapezoidal rod is flush with the end face of the rightmost non-blocking section beam.

[0027] Further, the trapezoidal rods have a trapezoidal cross-section. The height between the front surface and the front back surface of the trapezoidal rod is H1, the height between the rear surface and the rear back surface of the trapezoidal rod is H2, H1 is greater than H2, and the height between the back surface of the trapezoidal rod and the top surface of the high-efficiency grate plate is H3.

[0028] Further, H3 is greater than 25 mm.

[0029] Further, it also includes grate bed movement mode C and grate bed movement mode D, and the two movement modes are switched or alternately operated;

[0030] Grate bed movement mode C: First step, the odd-numbered non-blocking section beams move forward. Second step, the even-numbered non-blocking section beams move forward. Third step, the odd-numbered non-blocking section beams retreat. Fourth step, the even-numbered non-blocking section beams retreat; when the trapezoidal rods in the odd-numbered rows move, they stir and convey the bottom clinker in the even-numbered rows. When the trapezoidal rods in the even-numbered rows move, they stir and convey the bottom clinker in the odd-numbered rows, and the trapezoidal rods also have the conveying function under the friction between the non-blocking section beams at the same time;

[0031] Grate bed movement mode D: First step, all columns of non-blocking section beams move forward. Second step, the odd-numbered non-blocking section beams retreat. Third step, the even-numbered non-blocking section beams retreat.

[0032] Functions achieved by this application:

[0033] 1. The T-shaped grate bed has no baffle plate. The top of the grate plate is flush with the bottom surface of the inter-column seal. All the areas between the relatively moving inter-column traveling units are open areas, and there is no limited space. That is, through the optimized combination design of the T-shaped grate bed, the limited space prone to wear is eliminated, the problems of extrusion leakage and additional wear are solved, and the service life of the inter-column seal and the grate plate is greatly improved.

[0034] 2. The inter-column seal adopts a loop-channel seal, which consists of three transverse seal channels with extremely small gaps and two longitudinal seal channels with small gaps. By controlling the sizes of the above five gap channels and increasing the width of dimension L, the resistance and path of material leakage are increased, enhancing the anti-leakage effect. At the same time, the height H between the inter-column seal and the grate plate can be significantly reduced, which also helps to reduce the dead material layer on the T-shaped grate bed and enhance the function of activating clinker.

[0035] 3. The T-shaped grate bed has no baffle plate and no dead material box; the height (H) of the new inter-column seal is low, and the friction during retraction can more effectively drive the dead material in the corresponding area; the air outlet direction of the high-efficiency grate plate is the same as the conveying direction, and it can effectively drive the movement of the bottom dead material under the impact of strong jet flow; the trapezoidal rods can effectively convey the bottom dead material during both forward and backward movements. By the above four methods, the dead material layer is reduced, the clinker on the T-shaped grate bed is activated, the cooling resistance is reduced, and the cooling power consumption is lowered.

[0036] 4. There are two combination options for the T-shaped grate bed. According to the working conditions, they can be used interchangeably. One is composed of an optimized combination of a new inter-column seal with no baffle plate and loop-channel characteristics, a high-efficiency grate plate, a sectional beam, etc.; the other is to add trapezoidal rods on the above grate bed to form an enhanced T-shaped grate bed.

[0037] 5. The T-shaped grate bed (with trapezoidal rods) adopts an operation mode of odd and even columns advancing alternately and then odd and even columns retracting alternately, a total of four steps, which greatly enhances the conveying capacity, reduces the operation frequency, and reduces the wear during rapid operation. The T-shaped grate bed (without trapezoidal rods) adopts an operation mode of all columns advancing in step and the spaced columns retracting in three steps (i.e., the operation mode of the existing step grate cooler).

[0038] 6. The T-shaped grate bed with trapezoidal rods has the function of the step grate cooler to convey the bottom clinker by the friction between the clinkers, and also has the function of the trapezoidal rods to convey the bottom clinker in a transverse through manner, greatly enhancing the conveying capacity of the bottom cold material. At the same time, the conveying capacity of the upper hot material is relatively weakened, making the cooling and conveying more efficiently coupled and twin, and improving the comprehensive performance of cooling and conveying of the grate bed and even the grate cooler.

[0039] 7. Due to the comprehensive action of the full transverse agitation of the trapezoidal rods and the linear agitation under the friction between the clinkers caused by the mutual movement between the sectional beams between the columns. The ability of the clinker to be stirred, flipped and homogenized is greatly improved, which helps to improve the segregation distribution of the clinker, enhance the adaptability of the T-shaped grate bed to the segregation working conditions. At the same time, it helps to break the boundary layer between gas and solid, homogenize the gas-solid heat transfer interface, and improve the rapid cooling heat transfer efficiency.

[0040] 8. The trapezoidal bars of the T-shaped grate cooler (with trapezoidal bars) are transversely fixed to the sectional beam at four points and can be flexibly switched back and forth according to the working conditions. In addition, this kind of trapezoidal bar is integrated with the movable inter-column sectional beam, without additional transmission, and the connection of the trapezoidal bar is reliable, with low failure rate and high reliability.

[0041] Advantages of this application:

[0042] 1. Eliminate the easily worn limited space, solve the problems of extrusion leakage and additional wear, and greatly improve the service life of the inter-column seal and grate plates.

[0043] 2. Increase the resistance and path of leakage, enhance the anti-leakage effect. At the same time, it can also greatly reduce the height H between the inter-column seal and the grate plate, which also helps to reduce the dead material layer on the T-shaped grate cooler and enhance the function of activating clinker.

[0044] 3. Combine multiple technical methods to reduce the dead material layer, activate the clinker on the T-shaped grate cooler, reduce the cooling resistance, and lower the cooling power consumption.

[0045] 4. Two types of T-shaped grate coolers that can be flexibly combined. Among them, the enhanced T-shaped grate cooler with trapezoidal bars adopts an operation mode of advancing and retreating alternately in odd and even numbers, greatly improving the conveying capacity, reducing the operation frequency, and reducing the wear during rapid operation.

[0046] 5. Combine the characteristics of the step type and the trapezoidal bar type, twin the functions of strengthening cooling and conveying, and greatly improve the process performance of the T-shaped grate cooler.

[0047] 6. Improve the segregation distribution of clinker and enhance the adaptability of the T-shaped grate cooler to the segregation working conditions.

[0048] 7. Help to break the boundary layer between gas and solid, homogenize the gas-solid heat transfer interface, and improve the rapid cooling heat transfer efficiency.

[0049] 8. The connection of the trapezoidal bar is reliable, with low failure rate and high reliability, and the two types of T-shaped grate coolers are interchangeable.

[0050] The main solution of the foregoing application and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in this application; and in this application, (each non-conflicting option) can be freely combined between options and with other options. Those skilled in the art can understand that there are various combinations according to the prior art and common general knowledge after understanding the solution of this application, all of which are the technical solutions to be protected in this application, and will not be enumerated here. Brief Description of the Drawings

[0051] Figure 1 It is a schematic structural diagram of the grate cooler grate of the existing step type.

[0052] Figure 2It is a schematic structural diagram of the grate cooler bed in Embodiment 1 of the present application.

[0053] Figure 3 It is an enlarged structural view of the shallow-wide type inter-column seal of the present application.

[0054] Figure 4 It is an enlarged structural view of the loop seal channel of the present application.

[0055] Figure 5 It is a schematic structural diagram of the grate cooler bed in Embodiment 2 of the present application.

[0056] Figure 6 It is an enlarged structural view of the trapezoidal rod of the present application.

[0057] In the figure: 1 - old section beam, 2 - old grate plate, 3 - old baffle plate, 4 - old inter-column seal, 5 - dead material layer; 6 - non-baffle section beam, 7 - high-efficiency grate plate, 8 - shallow-wide type inter-column seal, 9 - fastener, 10 - loop seal channel, 11 - left trapezoidal rod, 12 - middle trapezoidal rod, 13 - right trapezoidal rod; 6.1 - left section beam, 6.2 - right section beam, 8.1 - sealing U-shaped part, 8.2 - sealing L-shaped part, 10.1 - transverse contact channel, 10.2 - transverse gap channel, 10.3 - longitudinal gap channel. Detailed implementation manners

[0058] Figure 1 It is the grate cooler bed of the existing walking-beam type grate cooler. It can be seen from the figure that the grate cooler bed is composed of several rows of old section beams 1, and the old section beams move horizontally under the driving action. The movement mode is as follows: in the first step, all columnar units move forward simultaneously; in the second step, columns 1 / 4 / 7 etc. retreat; in the third step, columns 2 / 5 / 8 etc. retreat; in the fourth step, columns 3 / 6 / 9 etc. retreat, thus completing a movement cycle. Running repeatedly like this is the existing operation mode and conveying principle of the walking-beam type grate cooler.

[0059] The old section beam 1 is the support core of the grate cooler bed and the basic carrier for forming the columnar traveling unit. The old grate plate 2 is installed thereon. The main function of the old grate plate 2 is to carry the clinker, and then the cooling medium enters the grate cooler bed through the gaps of the grate plate, and then cools the clinker on the grate cooler bed. There are also the old baffle plate 3 and the old inter-column seal 4 on the old section beam. A dead material box and a dead material layer 5 are formed between the old baffle plate 3 and the old inter-column seal 4, and the clinker in this area hardly flows. There is a narrow limited space between the old grate plate 2 or the old baffle plate 3 and the old inter-column seal 4. As shown in the figure, the gap of this narrow space is generally 1 - 5 mm. Due to the interlaced movement between the columnar traveling units, it is easy for clinker particles to enter this narrow space, resulting in extrusion wear, aggravating the additional wear of the components in the relevant area, and also squeezing the clinker into the inside of the inter-column seal, forming extrusion leakage.

[0060] The following non-limiting embodiments are used to illustrate the present application.

[0061] Example 1

[0062] refer to Figures 2 to 4 As shown, a twin-coupled enabled T-type grate bed for efficient cooling and precise conveying, specifically a step-by-step efficient cooling and conveying T-type grate bed, is characterized by no baffle plates and no narrow limited space, including a non-baffle section beam 6, a high-efficiency grate plate 7, a shallow wide inter-row seal 8, a fastener 9 and a return-shaped sealing channel 10.

[0063] The non-blocking segment beam 6 is a segment beam of a new structure, on which there is no material blocking plate, so that there is no dead material box or dead material layer on the grate bed, and the clinker on the grate bed is highly activated. Since there is no material blocking plate on the segment beam, there are no additional components above the grate plate and the inter-row seal to form an open space, and there is no narrow limited space structure, that is, the distance between the inter-row seal and the high-efficiency grate plate and other components is large, there is no small gap contact, no groove limited space, no extrusion and shearing when the material passes through, and no additional extrusion wear.

[0064] The non-blocking segment beam 6 is arranged in several rows, and the several rows of beam bodies together form a grate bed to achieve step-by-step movement. When the traveling units between the rows are staggered and run, they are all open areas without narrow limited spaces. The non-blocking segment beam 6 is provided with a high-efficiency grate plate 7, which has a strong jet impact effect and high cooling and heat exchange efficiency. In addition, the wind blowing direction is consistent with the direction of clinker transportation, and has the function of assisting the transportation of bottom dead materials.

[0065] A shallow wide inter-row seal 8 is provided between two adjacent non-blocking segment beams 6, and the shallow wide inter-row seal 8 is used to seal and block the gap between two adjacent non-blocking segment beams 6 to prevent material leakage. An open space is formed above the high-efficiency grate plate 7 and the shallow wide inter-row seal 8. Since there is no material blocking plate, the narrow limited space is completely eliminated, and the problems of extrusion wear and extrusion leakage are solved.

[0066] The shallow wide inter-row seal 8 comprises a sealing U-shaped member 8.1 and a sealing L-shaped member 8.2. The sealing U-shaped member 8.1 is invertedly arranged on the left section beam 6.1, and the sealing L-shaped member 8.2 is arranged on the right section beam 6.2. The left extension of the sealing U-shaped member 8.1 and the right side of the sealing L-shaped member 8.2 are both located in the sinking groove of the high-efficiency grate plate 7. The bottom surfaces of the sealing U-shaped member 8.1 and the sealing L-shaped member 8.2 are both flush with the top surface of the high-efficiency grate plate 7, thereby realizing the sinking installation and fixation of the seal to minimize the height of the seal and avoid affecting the transportation of materials.

[0067] The left extension of the sealed U-shaped part 8.1 is fixedly connected to the left section beam 6.1 through the countersunk fastener 9, and the right side of the sealed L-shaped part 8.2 is fixedly connected to the right section beam 6.2 through the countersunk fastener 9. The fastener 9 is installed inside the shallow-wide inter-column seal with a countersunk head design, which will not cause wear to the fastener 9 or form a new narrow limited space. An open space is formed above the sealed U-shaped part 8.1, the sealed L-shaped part 8.2 and the high-efficiency grate plate 7, and there is no small-gap contact or groove limited space between the sealed U-shaped part 8.1, the sealed L-shaped part 8.2 and the high-efficiency grate plate 7.

[0068] A height H is formed between the top surface of the high-efficiency grate plate 7 and the top surface of the sealed U-shaped part 8.1. H is 25 - 50 mm, which enhances the activation and conveying ability of the bottom clinker during the staggered movement between the inter-column traveling units and also helps to reduce the relative dead material layer. The U-shaped width of the sealed U-shaped part 8.1 is L, and L is 20 - 50 mm.

[0069] One end of the sealed L-shaped part 8.2 extends into the U-shaped groove of the sealed U-shaped part 8.1, and a loop seal channel 10 is formed between the sealed U-shaped part 8.1 and the sealed L-shaped part 8.2, that is, the seal gap composed of components such as the high-efficiency grate plate 7, the sealed U-shaped part 8.1, the sealed L-shaped part 8.2, the high-efficiency grate plate 7, the left section beam 6.1, and the right section beam 6.2.

[0070] The loop seal channel 10 specifically includes a transverse contact channel 10.1, two extremely small transverse gap channels 10.2, and two relatively small longitudinal gap channels 10.3. A transverse contact channel 10.1 with a height of h3 is formed between the left bottom back surface of the sealed L-shaped part 8.2 and the bottom surface of the high-efficiency grate plate 7. h3 is 0.2 - 0.5 mm, forming a seal channel similar to contact.

[0071] A transverse gap channel 10.2 with a height of h1 is formed between the right bottom back surface of the sealed U-shaped part 8.1 and the right bottom surface of the sealed L-shaped part 8.2, and a transverse gap channel 10.2 with a height of h2 is formed between the middle groove back surface of the sealed U-shaped part 8.1 and the left top surface of the sealed L-shaped part 8.2. h1 is 0.5 - 1.5 mm, h2 is 0.5 - 1.5 mm, and the L dimension is controlled at 20 - 50 mm to extend the path of the gap channel and increase the resistance to leakage of materials.

[0072] A longitudinal gap channel 10.3 with a dimension of n is formed between the opposite sides of the right side of the sealed U-shaped part 8.1 and the left side of the sealed L-shaped part 8.2, and a longitudinal gap channel 10.3 with a dimension of n is formed between the opposite sides of the left side of the sealed U-shaped part 8.1 and the left side of the sealed L-shaped part 8.2. n is 1 - 2.5 mm, which can control the gap size while satisfying the lateral swing of the columnar unit and enhance the anti-leakage effect.

[0073] It also includes grate cooler motion mode A and grate cooler motion mode B, and the two motion modes are switched or alternately operated.

[0074] Grate cooler motion mode A: First step, the beam sections without baffles in all columns move forward; second step, the beam sections without baffles in columns 1, 4, and 7 retract; third step, the beam sections without baffles in columns 2, 5, and 8 retract; fourth step, the beam sections without baffles in columns 3, 6, and 9 retract.

[0075] Grate cooler motion mode B: First step, the beam sections without baffles in all columns move forward; second step, the beam sections without baffles in odd-numbered columns retract; third step, the beam sections without baffles in even-numbered columns retract.

[0076] Embodiment 2

[0077] Reference Figures 3 to 6 As shown, a T-shaped grate cooler with twin coupling energy supply for efficient cooling and precise conveying, specifically a T-shaped grate cooler with columnar trapezoidal rods for step-by-step efficient cooling and conveying, is characterized by no baffle plate and no narrow limited space. On the basis of Embodiment 1, it also includes trapezoidal rods provided on the beam sections without baffles 6, and whether to add trapezoidal rods can be selected according to the working conditions, with strong interchangeability. The T-shaped grate cooler with trapezoidal rods has stronger cooling and conveying capabilities.

[0078] The trapezoidal rods are provided with several rows, and the trapezoidal rods are driven simultaneously by the transmission of the beam sections. The front and rear rows of trapezoidal rods are arranged staggeredly to ensure the uniformity of the pushing effect. The trapezoidal rods arranged at intervals and acting alternately have a stirring and homogenizing function, and the clinker with different particle sizes on the grate cooler is more evenly distributed.

[0079] The trapezoidal rods are fixedly connected to the beam sections without baffles 6 through sunken fasteners 9. The fasteners 9 are installed inside, which will not cause wear to the fasteners 9 or form a new narrow limited space. The trapezoidal rods and the sealing between the grate plates in the column direction are fixed by fasteners at the same position, and four-point fixation is adopted. There is also a spigot connection between the trapezoidal rods or the inter-column seal and the beam section to balance the resistance and reduce the load on the fasteners 9.

[0080] Due to the side walls of the beam sections of the grate cooler, the trapezoidal rods are divided into several types. The trapezoidal rods include left trapezoidal rods 11, middle trapezoidal rods 12, and right trapezoidal rods 13. The left end of the left trapezoidal rod 11 is flush with the end face of the leftmost beam section without baffles 6, the two ends of the middle trapezoidal rod 12 extend above the adjacent two beam sections without baffles 6, and the right end of the right trapezoidal rod 13 is flush with the end face of the rightmost beam section without baffles 6.

[0081] The trapezoidal rods have a trapezoidal cross-section. The height between the front surface and the front back surface of the trapezoidal rod is H1, and the height between the rear surface and the rear back surface of the trapezoidal rod is H2. H1 is greater than H2, that is, the high end faces the material conveying direction, which increases the conveying capacity and at the same time reduces the amount of backhauled material. The height between the back surface of the trapezoidal rod and the top surface of the high-efficiency grate plate 7 is H3, and H3 is greater than 25 mm to avoid forming a limited space.

[0082] It also includes the grate cooler bed movement mode C and the grate cooler bed movement mode D, and the two movement modes are switched or alternately operated.

[0083] Grate cooler bed movement mode C: First step, the non-block section beams of the odd-numbered columns move forward; second step, the non-block section beams of the even-numbered columns move forward; third step, the non-block section beams of the odd-numbered columns move backward; fourth step, the non-block section beams of the even-numbered columns move backward. When the trapezoidal rods of the odd-numbered columns move, they stir and convey the bottom clinker of the even-numbered columns. When the trapezoidal rods of the even-numbered columns move, they stir and convey the bottom clinker of the odd-numbered columns. At the same time, the trapezoidal rods also have the conveying function under the friction between the non-block section beams.

[0084] Grate cooler bed movement mode D: First step, the non-block section beams of all columns move forward; second step, the non-block section beams of the odd-numbered columns move backward; third step, the non-block section beams of the even-numbered columns move backward.

[0085] The T-shaped grate cooler bed with trapezoidal rods also has the conveying function of a step grate cooler, that is, when the columnar units move forward and backward, it can drive the clinker forward. When it moves backward, due to the friction between the columnar moving units, it will also drive the conveyance of some clinker. In short, the T-shaped grate cooler bed with trapezoidal rods has the comprehensive ability of trapezoidal rods and step conveyance, and the conveying ability is greatly enhanced. Therefore, the operating frequency of the grate cooler bed can be reduced, and it only needs to operate 1-4 times per minute, greatly reducing the periodic load of the transmission components and the corresponding wear. Especially, the conveying ability of the bottom clinker is greatly enhanced, which is conducive to cooperating with cooling to more accurately complete the conveyance of the clinker with sufficient bottom cooling, while the conveyance of the clinker with slower top cooling is relatively slowed down, making the conveyance and cooling of the clinker more efficiently coordinated, forming a twin design and promoting a qualitative improvement in the comprehensive performance of the T-shaped grate cooler bed.

[0086] Due to the function of the trapezoidal rods, the clinker can be stirred, which promotes the improvement of the segregation distribution of the clinker particle size and has room for further improvement, and improves the adaptability to the segregation distribution condition of the clinker. In addition, due to the stirring effect, it is easy to break the boundary layer between gas and solid and homogenize the interface of gas-solid heat transfer. Combining with the strong jet impact of the above-mentioned high-efficiency rapid cooling heat exchange grate plate and the efficient cooperation of the cooling and conveying of hot and cold clinker, the above-mentioned various points can comprehensively improve the rapid cooling heat exchange efficiency of the clinker, reduce the cooling air volume, reduce the cooling power consumption, and have remarkable energy-saving, consumption-reducing and emission-reducing effects.

[0087] The basic example of the present application and its various further selected examples can be freely combined to form multiple embodiments, all of which are the embodiments that can be adopted and claimed in the present application. In the solution of the present application, each selected example can be arbitrarily combined with any basic example and selected example.

[0088] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A twin-coupling-enabled T-type grate bed for efficient cooling and precise conveying, comprising a high-efficiency grate plate (7), characterized in that: The invention also comprises a non-blocking segment beam (6) and a shallow wide inter-row seal (8), wherein the non-blocking segment beam (6) is arranged in a plurality of rows, a high-efficiency grate plate (7) is provided on the non-blocking segment beam (6), a shallow wide inter-row seal (8) is provided between two adjacent non-blocking segment beams (6), and an open space is formed above the high-efficiency grate plate (7) and the shallow wide inter-row seal (8).

2. The T-type grate bed with high efficiency cooling and precise conveying enabled by twin coupling according to claim 1 is characterized in that: The shallow wide inter-row seal (8) comprises a sealing U-shaped piece (8.1) and a sealing L-shaped piece (8.2), and a return-shaped sealing channel (10) is formed between the high-efficiency grate plate (7), the sealing U-shaped piece (8.1) and the sealing L-shaped piece (8.2).

3. The T-type grate bed with high efficiency cooling and precise conveying enabled by twin coupling according to claim 2 is characterized in that: The left side of the sealing U-shaped member (8.1) is fixedly connected to the left section beam (6.1) via a sunken fastener (9), and the right side of the sealing L-shaped member (8.2) is fixedly connected to the right section beam (6.2) via a sunken fastener (9). An open space is formed above the sealing U-shaped member (8.1), the sealing L-shaped member (8.2) and the high-efficiency grate plate (7), and there is no small gap contact and no groove limited space between the sealing U-shaped member (8.1), the sealing L-shaped member (8.2) and the high-efficiency grate plate (7).

4. The T-type grate bed with high efficiency cooling and precise conveying enabled by twin coupling according to claim 2 or 3, characterized in that: A transverse gap channel (10.2) of h1 is formed between the right bottom back of the sealing U-shaped member (8.1) and the right bottom surface of the sealing L-shaped member (8.2); a longitudinal gap channel (10.3) of n is formed between the right side of the sealing U-shaped member (8.1) and the side opposite to the left side of the sealing L-shaped member (8.2); a transverse gap channel (10.2) of h2 is formed between the back of the middle groove of the sealing U-shaped member (8.1) and the left top surface of the sealing L-shaped member (8.2); a longitudinal gap channel (10.3) of n is formed between the left side of the sealing U-shaped member (8.1) and the side opposite to the left side of the sealing L-shaped member (8.2); and a transverse contact channel (10.1) of h3 is formed between the left bottom back of the sealing L-shaped member (8.2) and the bottom surface of the high-efficiency grate plate (7).

5. The T-type grate bed with high efficiency cooling and precise transportation enabled by twin coupling according to claim 4 is characterized in that: The top surface of the high-efficiency grate plate (7) and the top surface of the sealing U-shaped piece (8.1) form a height H, H is 25-50mm, the U-shaped width of the sealing U-shaped piece (8.1) is L, L is 20-50mm, h1 is 0.5-1.5mm, h2 is 0.5-1.5mm, n is 1-2.5mm, and h3 is 0.2-0.5mm.

6. The T-type grate bed with high efficiency cooling and precise conveying enabled by twin coupling according to claim 1, characterized in that: It also comprises a trapezoidal rod arranged on the non-blocking section beam (6).

7. The T-type grate bed with high efficiency cooling and precise conveying enabled by twin coupling according to claim 6 is characterized by: The trapezoidal rod is fixedly connected to the non-blocking segment beam (6) via a sunken fastener (9), or the trapezoidal rod is fixedly connected to the non-blocking segment beam (6) via a stop; the trapezoidal rod is provided with a plurality of rows, and the front and rear rows of trapezoidal rods are arranged alternately.

8. The T-type grate bed with high efficiency cooling and precise transportation enabled by twin coupling according to claim 6 or 7, characterized in that: The trapezoidal rods comprise a left trapezoidal rod (11), a middle trapezoidal rod (12) and a right trapezoidal rod (13); the left end of the left trapezoidal rod (11) is flush with the end face of the leftmost unblocked segment beam (6); the two ends of the middle trapezoidal rod (12) extend above two adjacent unblocked segment beams (6); and the right end of the right trapezoidal rod (13) is flush with the end face of the rightmost unblocked segment beam (6).

9. The T-type grate bed with high efficiency cooling and precise conveying enabled by twin coupling according to claim 6, characterized in that: The trapezoidal rod has a trapezoidal cross section, the height between the front end surface and the front back of the trapezoidal rod is H1, the height between the rear end surface and the rear back of the trapezoidal rod is H2, H1 is greater than H2, and the height between the back of the trapezoidal rod and the top surface of the high-efficiency grate plate (7) is H3; the H3 is greater than 25 mm.

10. The T-type grate bed with twin coupling empowerment for efficient cooling and precise transportation according to claim 6, characterized in that: It also includes a grate bed motion mode C and a grate bed motion mode D, and the two motion modes are switched or operated alternately; Grate bed movement mode C: in the first step, the odd-numbered columns of unobstructed segment beams (6) move forward, in the second step, the even-numbered columns of unobstructed segment beams (6) move forward, in the third step, the odd-numbered columns of unobstructed segment beams (6) move back, and in the fourth step, the even-numbered columns of unobstructed segment beams (6) move back; when the trapezoidal rods in the odd-numbered columns move, they stir and convey the bottom clinker in the even-numbered columns, and when the trapezoidal rods in the even-numbered columns move, they stir and convey the bottom clinker in the odd-numbered columns, and the trapezoidal rods also have a conveying function under the friction between the unobstructed segment beams; Grate bed movement mode D: In the first step, all rows of unblocked segment beams (6) move forward, in the second step, the odd-numbered rows of unblocked segment beams (6) move back, and in the third step, the even-numbered rows of unblocked segment beams (6) move back.

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