Scraper type slag dryer

Abstract

The utility model relates to the technical field of pulverized coal furnace bottom slag treatment equipment, in particular to a scraper type slag drying machine. The scraping plate structure of the slag drying machine is improved, the bottom of the scraping plate abuts against the inner bottom face of the slag drying machine shell, the scraping plate is driven by the chain to move, and the scraping plate drives disintegrating slag to move towards the slag bin. The transverse supporting plate is arranged on the side wall of the scraping plate, the horizontal bending resistance of the scraping plate is improved through the transverse supporting plate, the length of the transverse supporting plate is the same as that of the scraping plate, the probability that the two ends of the scraping plate are bent backwards or curled is reduced, the reinforcing ribs are arranged, the vertical bending resistance of the scraping plate is improved, and the probability that the bottom of the scraping plate is curled backwards is reduced; therefore, the slag scraping effect of the scraper is ensured.

Description

Technical Field

[0001] This application relates to the technical field of coal pulverized furnace bottom ash treatment equipment, and in particular to a scraper-type dry ash machine. Background Technology

[0002] A dry slag machine is a bottom ash treatment device for pulverized coal furnaces, used for cooling and conveying hot ash. With ash wells and ash bins installed before and after it, a complete ash discharge system can be formed, realizing the entire bottom ash treatment process: collection → pre-crushing → conveying and cooling → crushing → storage → periodic discharge. In existing dry slag machines, the scraper blades are mostly fixed to chains on both sides. When the dry slag machine is working, the chains drive the scraper blades to move, thus scraping the broken ash at the bottom of the dry slag machine into the ash bin. Because the broken ash at the bottom of the dry slag machine is unevenly distributed, the load on the scraper blades varies at different points. Excessive load can cause the bottom and ends of the scraper blades to curl, and the middle of the scraper blades to bend, affecting the scraping effect. Utility Model Content

[0003] The present invention aims to solve the problem that the scraper blades of the above-mentioned dry slag machine are prone to curling and bending, which affects the scraping effect, and thus provides a dry slag machine with a more stable structure and scraper blades that are not prone to bending and curling.

[0004] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0005] A scraper-type dry slag machine includes a dry slag machine housing. Multiple drive shafts are rotatably arranged inside the dry slag machine housing. Sprockets are fitted on both ends of the drive shafts inside the dry slag machine housing. Chains are connected between the sprockets on the same side. At least one scraper is connected between the chains on both sides. The bottom of the scraper is used to abut against the inner bottom surface of the dry slag machine housing. A transverse support plate with the same length as the scraper is provided on the side wall of the scraper. Several reinforcing ribs are respectively provided between the transverse support plate and the upper and lower side walls of the scraper.

[0006] Compared with the prior art, the advantages of this utility model, which adopts the above technical solution, are as follows:

[0007] This invention improves the scraper structure of the dry slag machine by placing the bottom of the scraper against the inner bottom surface of the dry slag machine housing. The scraper is driven by a chain to move, causing it to carry the crushed slag towards the slag bin. A transverse support plate is provided on the side wall of the scraper to increase its horizontal bending resistance. The transverse support plate is the same length as the scraper, reducing the probability of the scraper bending backward or curling at both ends. By setting reinforcing ribs, the vertical bending resistance of the scraper is increased, reducing the probability of the bottom of the scraper curling backward, thereby ensuring the scraping effect of the scraper.

[0008] As a preferred embodiment, a further technical solution of this utility model is:

[0009] The left and right ends of the scraper are horizontally slidably connected to locking components. The upper part of the locking component is secured to the chain, the middle part of the locking component is vertically slidably connected to the scraper, and the lower part of the locking component slides along the length of the scraper and locks onto the scraper. This structure allows the locking components at both ends to slide horizontally and move vertically based on the scraper, facilitating the assembly and disassembly of the locking components. The locking components are also secured to the chain, allowing the chain to drive the scraper to move.

[0010] The snap-fit ​​assembly includes an upper fixing block and a lower fixing block. The inner ends of the upper and lower fixing blocks are elastically connected, and the outer ends of the upper and lower fixing blocks are clamped onto the chain. Limiting plates for clamping the scraper are fixed to the front and rear sides of the bottom of the lower fixing block. Through this structure, the upper and lower fixing blocks are clamped onto the chain, and the scraper is clamped by the limiting plates, allowing the scraper to move stably under the drive of the chain.

[0011] The scraper has a through groove running horizontally through its upper part, into which a limiting rod is inserted. The height of the groove is greater than the height of the limiting rod. The two ends of the limiting rod are inserted into the lower fixing blocks on both sides. This structure allows the limiting rod to move vertically within the groove, making the distance between the locking assembly and the scraper adjustable, thus ensuring that the bottom of the scraper always abuts against the inner bottom surface of the dry slag machine.

[0012] A first spring is fixed to the bottom of the lower fixing block. The first spring is located between two limiting plates on the same side, and the lower end of the first spring abuts against the top of the scraper. The first spring ensures that the bottom of the scraper always abuts against the inner bottom surface of the dry slag machine, thereby increasing the slag scraping effect.

[0013] A fixing sleeve is also provided between the inner ends of the lower fixing block and the upper fixing block. The upper and lower parts of the fixing sleeve have connecting grooves. The inner ends of the upper and lower fixing blocks are movably inserted into the corresponding connecting grooves and connected to the connecting grooves via a second spring. When the second spring is in its natural state, the distance between the upper and lower fixing blocks is less than the height of the chain. Through this structure, the upper and lower fixing blocks are brought closer together under the elastic action of the second spring, thus clamping them onto the chain.

[0014] The reinforcing ribs above and below the transverse support plate are vertically staggered. This structure increases the bending resistance at each vertical position between the transverse support plate and the scraper. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0016] Figure 2 This is a schematic diagram of the connection between the chain and the scraper in an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the scraper and snap-fit ​​assembly structure according to an embodiment of this application;

[0018] Figure 4 yes Figure 3 A magnified view of part A in the image.

[0019] In the diagram: 1. Dry slag machine housing; 2. Chain; 3. Drive shaft; 4. Scraper; 41. Horizontal support plate; 42. Reinforcing rib; 43. Through groove; 5. Snap-fit ​​assembly; 51. Upper fixing block; 511. Second limiting block; 512. First limiting block; 52. Fixing sleeve; 521. Connecting groove; 53. Lower fixing block; 54. Limiting plate; 55. First spring; 56. Limiting rod. Detailed Implementation

[0020] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0021] Reference Figure 1-4 This application discloses a scraper-type dry slag machine, including a dry slag machine housing. Multiple drive shafts are rotatably arranged in the dry slag machine housing. Sprockets are fixedly sleeved at both ends of the drive shafts inside the dry slag machine housing. Chains are connected to the sprockets on the same side. A drive motor drives the drive shaft to rotate, thereby driving the sprockets and chains to rotate. At least one scraper is connected between the chains on both sides. The bottom of the scraper is used to elastically abut against the bottom surface of the dry slag machine housing. A transverse support plate with the same length as the scraper is provided on the rear side wall of the scraper. The transverse support plate is perpendicular to the rear side wall of the scraper, and the front end of the transverse support plate is welded and fixed to the rear side wall of the scraper. Several reinforcing ribs are welded between the transverse support plate and the upper and lower scraper side walls, respectively.

[0022] In this embodiment, a rectangular portion is cut off at both ends of the upper part of the scraper to avoid the chain position. The left and right ends of the upper part of the scraper are horizontally slidably connected with a snap-fit ​​assembly. The snap-fit ​​assembly includes an upper fixing block, a fixing sleeve and a lower fixing block. The inner ends of the upper fixing block and the lower fixing block are elastically connected. The outer ends of the upper fixing block and the lower fixing block are clamped on the chain. A first spring is fixed at the bottom of the lower fixing block. The first spring is located between two limiting plates on the same side. The lower end of the first spring abuts against the top of the scraper. The first spring ensures that the bottom of the scraper always abuts against the inner bottom surface of the dry slag machine, thereby increasing the slag scraping effect. Specifically, the upper and lower parts of the fixing sleeve are provided with connecting grooves. A first limiting block is fixed between the inner end of the upper fixing block and the inner end of the lower fixing block. The length and width of the first limiting block are the same as the length and width of the connecting groove, so that the first limiting block can be movably inserted into the connecting groove. A second spring is connected between each connecting groove and the first limiting block inside. The elastic deformation direction of the second spring is parallel to the height direction of the scraper. When the second spring is in its natural state, the distance between the upper fixing block and the lower fixing block is less than the height of the chain. A second limiting block protruding towards the middle is fixed between the outer end of the upper fixing block and the outer end of the lower fixing block. The horizontal distance between the second limiting block and the fixing sleeve is greater than the width of the chain. When the snap-fit ​​component is snapped onto the chain, the chain is vertically clamped by the upper fixing block and the lower fixing block, and the fixing sleeve and the second limiting block limit the chain horizontally.

[0023] In this embodiment, the bottom front and rear sides of the lower fixed block are fixed with limiting plates for clamping the scraper. The distance between the two limiting plates is equal to the thickness of the scraper. The scraper is clamped by the limiting plates, so that the scraper moves stably under the drive of the chain.

[0024] In this embodiment, the middle part of the snap-fit ​​assembly is vertically slidably connected to the scraper, and the lower part of the snap-fit ​​assembly is slidably snapped onto the scraper along the length of the scraper. Specifically, a through groove is provided on the upper part of the scraper, the vertical cross-section of which is rectangular. A rectangular limiting rod is inserted into the through groove, the width of which is equal to the width of the through groove, and the height of which is greater than the height of which is greater than the height of which is greater than the height of which is greater than the width ... The positioning groove allows the limiting rod to move vertically within the groove, preventing it from moving forward, backward, or left and right. This allows the spacing between the locking assembly and the scraper to be adjustable, ensuring that the bottom of the scraper always abuts against the inner bottom surface of the dry slag machine under the elastic force of the first spring. The two ends of the limiting rod protrude from the groove and are movably inserted into the lower fixing blocks on both sides. Through the above structure, the locking assemblies at both ends can slide horizontally and move vertically based on the scraper, facilitating the assembly and disassembly of the locking assemblies. The locking assemblies are engaged with the chain, allowing the chain to drive the scraper to move.

[0025] In this embodiment, the reinforcing ribs above and below the transverse support plate are vertically staggered. This structure increases the bending resistance at each vertical position between the transverse support plate and the scraper.

[0026] This invention improves the scraper structure of the dry slag machine by placing the bottom of the scraper against the inner bottom surface of the dry slag machine casing. The scraper is moved by a chain, causing it to carry the crushed slag towards the slag bin below the discharge port of the dry slag machine. A transverse support plate is provided on the side wall of the scraper to increase its horizontal bending resistance. The transverse support plate is the same length as the scraper, reducing the probability of the scraper bending backward or curling at both ends. By setting reinforcing ribs, the vertical bending resistance of the scraper is increased, reducing the probability of the bottom of the scraper curling backward, thereby ensuring the scraping effect of the scraper.

[0027] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A scraper-type dry slag machine, comprising a dry slag machine housing, wherein multiple drive shafts are rotatably arranged within the dry slag machine housing, and sprockets are fitted at both ends of the drive shafts inside the dry slag machine housing, and chains are drivingly connected between the sprockets on the same side, characterized in that: At least one scraper is connected between the chains on both sides. The bottom of the scraper is used to abut against the bottom surface of the dry slag machine housing. A transverse support plate of the same length as the scraper is provided on the side wall of the scraper. Several reinforcing ribs are provided between the transverse support plate and the upper and lower scraper side walls, respectively.

2. The scraper-type dry slag machine according to claim 1, characterized in that: The left and right ends of the scraper are horizontally slidably connected with locking components. The upper part of the locking component is fixed to the chain, the middle part of the locking component is vertically slidably connected to the scraper, and the lower part of the locking component is slidably locked onto the scraper along the length of the scraper.

3. The scraper-type dry slag machine according to claim 2, characterized in that: The snap-fit ​​assembly includes an upper fixing block and a lower fixing block. The inner ends of the upper fixing block and the lower fixing block are elastically connected, and the outer ends of the upper fixing block and the lower fixing block are clamped on the chain. The bottom front and rear sides of the lower fixing block are fixed with limiting plates for clamping the scraper.

4. The scraper-type dry slag machine according to claim 3, characterized in that: The scraper has a through groove running from left to right on its upper part. A limiting rod is inserted into the through groove, and the height of the through groove is greater than the height of the limiting rod. The two ends of the limiting rod are respectively inserted into the lower fixing blocks on both sides.

5. The scraper-type dry slag machine according to claim 3, characterized in that: A first spring is fixed to the bottom of the lower fixing block. The first spring is located between two limiting plates on the same side, and the lower end of the first spring abuts against the top of the scraper.

6. The scraper-type dry slag machine according to claim 3, characterized in that: A fixing sleeve is provided between the inner ends of the lower fixing block and the upper fixing block. The upper and lower parts of the fixing sleeve are provided with connecting grooves. The inner ends of the upper fixing block and the lower fixing block are respectively movably inserted into the corresponding connecting grooves and connected to the connecting grooves through a second spring. When the second spring is in its natural state, the distance between the upper fixing block and the lower fixing block is less than the height of the chain.

7. The scraper-type dry slag machine according to claim 1, characterized in that: The reinforcing ribs above and below the horizontal support plate are vertically staggered.

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