A grate cooler inter-row sealing device

Abstract

The utility model discloses a grate type cooling machine intercolumniation sealing device, include: bottom plate, grate bed no.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature equipment sealing technology, specifically to a grate-type cooler inter-row sealing device. Background Technology

[0002] The grate cooler is a key piece of equipment for clinker cooling in industries such as cement and metallurgy. Its core function is to rapidly remove heat from the clinker using forced ventilation, and the recovered heat is used to preheat the combustion air, improving combustion efficiency and reducing energy consumption. Simultaneously, the cooling process embrittles the clinker particles, facilitating subsequent grinding. Inter-row sealing devices are required during the cooling process to prevent material and air leakage.

[0003] Currently, some inter-row seals in grate coolers use straight-plate metal or rubber sealing sheets as seals, and there are large gaps between the seals during installation, which greatly increases the air leakage rate during the cooling process. Other seals use S-shaped sealing bodies. Due to the complex structure of the S-shape, there is a high probability that the installation of these seals will cause serious wear to other seals that they are paired with. Existing inter-row sealing devices cannot guarantee the contact degree between the main sealing body and the clinker during the cooling process, which reduces the life of the main sealing body, increases the number of downtime maintenance, and is not conducive to the continuity of the production line.

[0004] Therefore, a grate-type cooler inter-row sealing device is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: an inter-row sealing device for a grate cooler, comprising: a base plate, a grate bed one, a grate bed two, a bolt group one, a bolt group two, a material conveying assembly, a bolt group three, and an inter-row composite sealing assembly. The base plate is configured as multiple plates, arranged equidistantly side-by-side. A grate bed one is fixedly connected to the base plate via bolt group one, and a grate bed two is fixedly connected to the base plate via bolt group two. The material conveying assembly is fixedly connected to the upper ends of both grate bed one and grate bed two via bolt group three. The inter-row composite sealing assembly is installed between grate bed one and grate bed two.

[0006] The inter-row composite sealing assembly includes: an L-shaped seal, a first bolt, a Z-shaped seal, a second bolt, a U-shaped seal, and a third bolt. The L-shaped seal is fixedly connected to the first grate bed by the first bolt, the Z-shaped seal is fixedly connected to the second grate bed by the second bolt, and the U-shaped seal is fixedly connected to the upper end of the Z-shaped seal by the third bolt in an inverted state.

[0007] Furthermore, as a preferred embodiment, the L-shaped seal has a first mounting hole at its bottom end, the first mounting hole being a non-through hole, and the L-shaped seal has grooves equidistantly spaced on the side near the Z-shaped seal.

[0008] Furthermore, as a preferred embodiment, the bottom end of the Z-shaped seal is provided with a second mounting hole, and the top end of the Z-shaped seal is provided with a fourth mounting hole, wherein the second mounting hole and the fourth mounting hole are not through holes.

[0009] Furthermore, as a preferred embodiment, the upper end of the U-shaped seal is provided with a third mounting hole, which is a through hole.

[0010] Furthermore, as a preferred embodiment, a channel one is provided between the side of the L-shaped seal with the groove and the side of the Z-shaped seal near the L-shaped seal; a channel two is provided between the top of the L-shaped seal and the bottom of the upper horizontal edge of the Z-shaped seal; a channel three is provided between the inner side of the left vertical edge of the U-shaped seal, the left side of the vertical edge of the L-shaped seal, and the left side of the upper horizontal edge of the Z-shaped seal; and a channel four is provided between the inner side of the right vertical edge of the U-shaped seal and the outer side of the vertical edge of the Z-shaped seal. Channel one, channel two, and channel three are sequentially connected.

[0011] Furthermore, as a preferred embodiment, a cooling gap is provided between the first grate bed and the second grate bed, and the cooling gap is connected to the first channel.

[0012] Furthermore, as a preferred embodiment, the left and right widths of channel one, channel three, and channel four are 5mm, and the vertical height of channel two is 6mm.

[0013] Furthermore, as a preferred embodiment, the L-shaped seal, the Z-shaped seal, and the U-shaped seal are integrally formed, and all three are made of ZGCr25Ni20.

[0014] Compared with the prior art, this utility model provides a grate-type cooler inter-row sealing device, which has the following beneficial effects:

[0015] Advantage 1: The inter-row composite sealing assembly in this utility model consists of a main sealing body and a secondary sealing body, neither of which adopts a complex S-shaped structure. Therefore, when the main sealing body and the secondary sealing body are combined, the main sealing body will not be severely worn due to the complex structure of the S-shaped seal, which greatly improves the service life of the entire inter-row composite sealing assembly.

[0016] Advantage 2: The L-shaped and Z-shaped seals of this utility model are provided with mounting holes. After installation, no bolts will protrude from the two seals and occupy space. Therefore, when the U-shaped seal is installed upside down on the Z-shaped seal, the gap between the air outlet and the air return is small, and no large airflow gap is generated, which greatly reduces the air leakage rate.

[0017] Advantage 3: This utility model has a special sealing body combination, which can appropriately increase the air supply force of the cooling air. The increased air supply force can improve the cooling degree and efficiency of the clinker. The special sealing body combination can also rotate some of the cooling air for cooling again, further improving the cooling degree and efficiency of the clinker, and significantly reducing the air leakage rate.

[0018] Advantage 4: In this invention, the secondary sealing body is in direct contact with the clinker, rather than the primary sealing body. The secondary sealing body effectively protects the primary sealing body. Therefore, after prolonged use, only the secondary sealing body needs to be replaced, which extends the service life of the primary sealing body, reduces the number of downtime maintenance, and is beneficial to the continuity of the production line. Attached Figure Description

[0019] Figure 1 A schematic diagram of an inter-row sealing device for a grate-type cooler;

[0020] Figure 2 A schematic diagram of the inter-row composite sealing component of a grate cooler inter-row sealing device;

[0021] Figure 3 A schematic diagram of the channels of the inter-row composite sealing assembly of a grate cooler;

[0022] Figure 4 A schematic diagram of an L-shaped seal for an inter-row sealing device of a grate cooler;

[0023] Figure 5 A schematic diagram of a Z-type seal for an inter-row sealing device of a grate cooler;

[0024] Figure 6 A schematic diagram of a U-shaped seal for an inter-row sealing device of a grate cooler;

[0025] Figure 7 A schematic diagram of the inter-row composite sealing assembly of a grate cooler inter-row sealing device;

[0026] In the diagram: 1. Base plate; 2. Grate bed one; 3. Grate bed two; 4. Bolt group two; 5. Conveying assembly; 6. Bolt group three; 7. Inter-row composite sealing assembly; 71. L-shaped seal; 711. First mounting hole; 712. Groove; 72. First bolt; 73. Z-shaped seal; 731. Second mounting hole; 732. Fourth mounting hole; 74. Second bolt; 75. U-shaped seal; 751. Third mounting hole; 76. Third bolt; 8. Channel one; 9. Channel two; 10. Channel three; 11. Bolt group one; 12. Cooling gap; 13. Channel four. Detailed Implementation

[0027] Please see Figures 1-7 This utility model provides an inter-row sealing device for a grate cooler, comprising: a base plate 1, a grate bed 2, a grate bed 3, a bolt group 11, a bolt group 4, a material conveying assembly 5, a bolt group 3, and an inter-row composite sealing assembly 7. Multiple base plates 1 are configured and arranged equidistantly side-by-side. A grate bed 2 is fixedly connected to the base plate 1 via bolt group 11, and a grate bed 3 is fixedly connected to the base plate 1 via bolt group 4. The material conveying assembly 5 is fixedly connected to the upper ends of both grate bed 2 and grate bed 3 via bolt group 6. The inter-row composite sealing assembly 7 is installed between grate bed 2 and grate bed 3.

[0028] The inter-row composite sealing assembly 7 includes: an L-shaped seal 71, a first bolt 72, a Z-shaped seal 73, a second bolt 74, a U-shaped seal 75, and a third bolt 76. The L-shaped seal 71 is fixedly connected to the grate bed 2 by the first bolt 72, the Z-shaped seal 73 is fixedly connected to the grate bed 3 by the second bolt 74, and the U-shaped seal 75 is fixedly connected to the upper end of the Z-shaped seal 73 in an inverted state by the third bolt 76.

[0029] In this embodiment, the installation steps of the inter-row composite sealing assembly 7 are as follows: Please refer to... Figure 2 As shown, firstly, the L-shaped seal 71 is installed on the grate bed 2 using the first bolt 72. Then, the Z-shaped seal 73 is installed on the grate bed 3 using the second bolt 74. Thus, the L-shaped seal 71 and the Z-shaped seal 73 constitute the main sealing body of this device. Subsequently, the U-shaped seal 75 is installed on the Z-shaped seal 73 with its opening facing downwards in an inverted position using the third bolt 76 as a secondary sealing body.

[0030] It should be noted that neither the main sealing body, composed of L-type seal 71 and Z-type seal 73, nor the secondary sealing body, composed of U-type seal 75, adopts the complex S-type structure. Therefore, when the main sealing body and the secondary sealing body are combined (that is, when U-type seal 75 is upside down installed on Z-type seal 73), the main sealing body will not suffer severe wear due to the complex structure of the S-type seal itself, which greatly improves the service life of the inter-row composite sealing assembly 7 as a whole.

[0031] Furthermore, the L-shaped seal 71 has a first mounting hole 711 at its bottom end. The first mounting hole 711 is not a through hole. The L-shaped seal 71 has grooves 712 at equal intervals on the side near the Z-shaped seal 73.

[0032] Furthermore, the bottom end of the Z-shaped seal 73 is provided with a second mounting hole 731, and the top end of the Z-shaped seal 73 is provided with a fourth mounting hole 732. The second mounting hole 731 and the fourth mounting hole 732 are not through holes.

[0033] Furthermore, the upper end of the U-shaped seal 75 is provided with a third mounting hole 751, which is a through hole.

[0034] In a preferred embodiment, the L-shaped seal 71 is installed on the grate 2 from inside the grate 2 using the first bolt 72. Similarly, the Z-shaped seal 73 is installed on the grate 2. Both the first mounting hole 711 on the L-shaped seal 71 and the second mounting hole 731 on the Z-shaped seal 73 are non-through holes. After installation, no bolts will protrude from either seal, thus avoiding space occupation. Therefore, the air outlet formed when the U-shaped seal 75 is upside down and installed on the Z-shaped seal 73 (see [reference]). Figure 2 (as shown in section A of the bid) and return air vent (see [reference]) Figure 2 The gap (as shown in section B) is small, which does not create a large airflow gap and significantly reduces the air leakage rate.

[0035] Furthermore, a channel 8 is provided between the side of the L-shaped seal 71 with the groove 712 and the side of the Z-shaped seal 73 near the L-shaped seal 71; a channel 9 is provided between the top of the L-shaped seal 71 and the bottom of the upper horizontal edge of the Z-shaped seal 73; a channel 10 is provided between the inner side of the left vertical edge of the U-shaped seal 75 and the left side of the vertical edge of the L-shaped seal 71 and the left side of the upper horizontal edge of the Z-shaped seal 73; and a channel 13 is provided between the inner side of the right vertical edge of the U-shaped seal 75 and the outer side of the vertical edge of the Z-shaped seal 73. The channels 8, 9, and 10 are connected in sequence.

[0036] Furthermore, a cooling gap 12 is provided between the first grate bed 2 and the second grate bed 3, and the cooling gap 12 is connected to the first channel 8.

[0037] It should be noted that cooling air chambers are provided below the first grate 2 and the second grate 3. The cooling air chambers supply air to the inter-row composite sealing assembly 7 in a forward direction through the cooling gap 12. Specifically, the cooling air provided by the cooling air chambers first flows through the cooling gap 12 and then enters the first channel 8. The left and right width of the first channel 8 before reaching the groove 712 is a = 5mm (see [reference]). Figure 3 As shown at point a), the width is b when it reaches the groove 712 (see reference). Figure 3As shown in the middle mark b), b>a), the cooling air entering the channel 8 will pass through areas with different widths on the left and right, which can appropriately increase the air supply force of the cooling air. Then the cooling air flows through the channel 9 and the channel 10 and is discharged from the air outlet A to cool the clinker. The cooling air with increased air supply force can improve the cooling degree of the clinker and enhance the cooling efficiency.

[0038] In a preferred embodiment, part of the cooling air discharged from the air outlet A will dissipate, and the other part will flow to another return air outlet B located on the same grate bed 2 as the air outlet A. The cooling air entering the return air outlet B will circulate in the channel 4 13 and then be discharged again to cool the clinker. The channel 4 13 and the return air outlet B can further improve the cooling degree of the clinker, further enhance the cooling efficiency, and significantly reduce the air leakage rate.

[0039] Furthermore, the width of channel 1 (8), channel 3 (10), and channel 4 (13) is 5mm, and the height of channel 2 (9) is 6mm.

[0040] As a preferred embodiment, it should also be noted that when the clinker is cooled on the grate, it can directly contact the secondary sealing body (U-shaped seal 75) instead of the main sealing body (L-shaped seal 71 and Z-shaped seal 73). The secondary sealing body protects the main sealing body well. Therefore, after long-term use, only the secondary sealing body needs to be replaced, which extends the service life of the main sealing body, reduces the number of downtime maintenance, and is conducive to the continuity of the production line.

[0041] Replacing the secondary seal only requires removing the third bolt 76 and reinstalling a brand new secondary seal, which is convenient, time-saving and labor-saving.

[0042] Furthermore, the L-shaped seal 71, the Z-shaped seal 73, and the U-shaped seal 75 are integral, and all three are made of ZGCr25Ni20.

[0043] In this embodiment, ZGCr25Ni20 is a heat-resistant cast steel material with excellent high-temperature performance, oxidation resistance, corrosion resistance and good mechanical properties. Therefore, it is widely used in high-temperature industrial fields. The use of this material to make the inter-row composite sealing component 7 can better complete the cooling operation of clinker.

[0044] In specific implementation, cooling air chambers are provided below grate 1 2 and grate 2 3. The cooling air chambers send air in the forward direction to the inter-row composite sealing assembly 7 through the cooling gap 12. Specifically, the cooling air provided by the cooling air chambers first flows through the cooling gap 12 and then enters the channel 1 8. The cooling air will pass through areas with different widths on the left and right sides in an alternating manner, which can appropriately increase the air supply force of the cooling air. Then the cooling air flows through the channel 2 9 and the channel 3 10 and is discharged from the air outlet A to cool the clinker.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A grate-type cooler inter-row sealing device, characterized in that: include: The assembly comprises a base plate (1), a grate bed 1 (2), a grate bed 2 (3), a bolt group 1 (11), a bolt group 2 (4), a material conveying assembly (5), a bolt group 3 (6), and an inter-row composite sealing assembly (7). The base plate (1) is configured as multiple units, with multiple base plates (1) arranged equidistantly side-by-side. A grate bed 1 (2) is fixedly connected to the base plate (1) via bolt group 1 (11). A grate bed 2 (3) is fixedly connected to the base plate (1) via bolt group 2 (4). The material conveying assembly (5) is fixedly connected to the upper ends of both grate bed 1 (2) and grate bed 2 (3) via bolt group 3 (6). The inter-row composite sealing assembly (7) is installed between grate bed 1 (2) and grate bed 2 (3). The inter-row composite sealing assembly (7) includes: an L-shaped seal (71), a first bolt (72), a Z-shaped seal (73), a second bolt (74), a U-shaped seal (75), and a third bolt (76). The L-shaped seal (71) is fixedly connected to the first grate bed (2) by the first bolt (72), the Z-shaped seal (73) is fixedly connected to the second grate bed (3) by the second bolt (74), and the U-shaped seal (75) is fixedly connected to the upper end of the Z-shaped seal (73) in an inverted state by the third bolt (76).

2. The inter-row sealing device for a grate-type cooler according to claim 1, characterized in that: The L-shaped seal (71) has a first mounting hole (711) at its bottom end. The first mounting hole (711) is not a through hole. The L-shaped seal (71) has grooves (712) at equal intervals on the side near the Z-shaped seal (73).

3. The inter-row sealing device for a grate-type cooler according to claim 1, characterized in that: The bottom end of the Z-shaped seal (73) is provided with a second mounting hole (731), and the top end of the Z-shaped seal (73) is provided with a fourth mounting hole (732). The second mounting hole (731) and the fourth mounting hole (732) are not through holes.

4. The inter-row sealing device for a grate cooler according to claim 1, characterized in that: The upper end of the U-shaped seal (75) is provided with a third mounting hole (751), which is a through hole.

5. A grate-type cooler inter-row sealing device according to claim 2, characterized in that: A channel 1 (8) is provided between the side of the L-shaped seal (71) with the groove (712) and the side of the Z-shaped seal (73) near the L-shaped seal (71). A channel 2 (9) is provided between the top of the L-shaped seal (71) and the bottom of the upper horizontal edge of the Z-shaped seal (73). A channel 3 (10) is provided between the inner side of the left vertical edge of the U-shaped seal (75), the left side of the vertical edge of the L-shaped seal (71), and the left side of the upper horizontal edge of the Z-shaped seal (73). A channel 4 (13) is provided between the inner side of the right vertical edge of the U-shaped seal (75) and the outer side of the vertical edge of the Z-shaped seal (73). The channels 1 (8), 2 (9), and 3 (10) are connected in sequence.

6. The inter-row sealing device for a grate cooler according to claim 5, characterized in that: A cooling gap (12) is provided between the first grate bed (2) and the second grate bed (3), and the cooling gap (12) is connected to the first channel (8).

7. A grate-type cooler inter-row sealing device according to claim 6, characterized in that: The left and right widths of the first channel (8), the third channel (10) and the fourth channel (13) are 5mm, and the vertical height of the second channel (9) is 6mm.

8. The inter-row sealing device for a grate cooler according to claim 1, characterized in that: The L-shaped seal (71), the Z-shaped seal (73), and the U-shaped seal (75) are an integral piece, and all three are made of ZGCr25Ni20.

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