A casting device for a gasifier grate

Abstract

The application relates to the technical field of industrial manufacturing, and discloses a furnace baffle casting device for a gasification furnace, which comprises a sand screening and conveying device, a vibrating device movably installed at the bottom of the sand screening and conveying device, a sand filtering device fixedly installed at the bottom of the sand screening and conveying device, and a sand suction device movably installed at one side of the sand filtering device. The sand suction device is used to suck away the suspended fine particles by using wind power, so that the fine suspended particles cannot embed into the surface of the casting in the circulating sand. The sand filtering device is used to integrate the cylinder sand filtering screen at the bottom of the sand vibrator, realize the integration of sand vibrating and screening, and complete the sand vibrating, screening and waste discharging simultaneously. The vibrating device and the sand screening and conveying device are used to remove the sand on the casting by vibration, recycle the sand, reduce the cost consumption, and make the uniformity of the sand after thermal expansion more stable, so that the defective rate of the subsequent casting use is reduced.

Description

Technical Field

[0001] This invention relates to the field of industrial manufacturing technology, and more specifically to a casting apparatus for a gasification furnace using a grate. Background Technology

[0002] With the increasing demand for energy, gasification technologies for some renewable resources have attracted attention. In the gasification process, a high-temperature resistant and wear-resistant grate is required, but existing technologies for casting grates typically use molding sand casting.

[0003] The main steps of molding sand casting are: mold making, molten metal pouring, cooling and post-treatment, and finishing. Cooling and post-treatment include: cooling, sand cleaning, and heat treatment strengthening. Most existing sand cleaning technologies choose physical vibration sand, while refractory materials such as quartz sand and zircon sand account for more than 80% of the waste sand. If it is directly discarded, it is equivalent to wasting high-purity mineral resources. The recycling of vibration sand waste is not only a means of reducing costs, but also an inevitable requirement for environmental protection compliance, safe production and sustainable development.

[0004] Secondly, the sand particles splashed during the sand vibration process can embed into the surface of the casting, forming "sand holes" defects. These defects not only damage the surface smoothness of the casting, but will also be exposed as honeycomb-shaped pits during subsequent machining, seriously affecting the reliability of the product.

[0005] The screened sand contains suspended particles. If these suspended particles are not removed, they will have a fatal impact on the performance of the circulating sand and the quality of the castings. The micro powder will sinter into a glassy phase under the action of high-temperature molten metal, resulting in uneven nodules on the surface of the castings.

[0006] In the foundry sand treatment system, the failure to screen out large sand particles will trigger a series of chain problems. Large particles form "bridging voids" between sand grains. During pouring, molten metal penetrates into the voids, hindering the escape of gas. Furthermore, the uneven expansion of large particles due to heat pulls on the surface of the sand mold, forming cracks.

[0007] In summary, there is an urgent need for a casting device for a gasifier grate that can screen circulating sand. Summary of the Invention

[0008] In order to overcome the above-mentioned defects of the prior art, the present invention provides a casting apparatus for a gasifier grate to solve the problems existing in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a casting device for a gasifier grate, comprising a sand screening and conveying device, characterized in that: a vibrating device is movably installed at the bottom of the sand screening and conveying device, a sand filtering device is fixedly installed at the bottom of the sand screening and conveying device, the vibrating device is drivingly connected to the sand filtering device, a sand suction device is movably installed on one side of the sand filtering device, an output bevel gear is fixedly connected to one side of the sand filtering device, and a bevel gear is fixedly connected to one side of the vibrating device, with one side of the bevel gear meshing with one side of the output bevel gear.

[0010] Furthermore, the sand screening and conveying device includes a sand screening plate, side plates are fixedly connected to both sides of the sand screening plate, an inclined plate is fixedly connected to one end of the sand screening plate, a T-shaped transmission plate is fixedly connected to one side of the side plate, a sand collecting trough is fixedly connected to the bottom of the sand screening plate, a sand dropping funnel is fixedly connected to one end of the sand collecting trough, and sand screening holes are opened inside the sand screening plate.

[0011] Furthermore, a telescopic outer shell is fixedly connected to the bottom of the T-shaped transmission plate, a vibrating outer shell is movably connected to the bottom of the telescopic outer shell, a base is fixedly connected to the bottom of the vibrating outer shell, a spring shell is fixedly connected to the top of the base, a spring is fixedly connected inside the spring shell, and the top of the spring is fixedly connected to the bottom of the T-shaped transmission plate.

[0012] Furthermore, a connecting column is fixedly connected to one side of the bevel gear, and a transmission wheel is fixedly connected to one side of the connecting column. The transmission wheel is internally connected to a transmission belt.

[0013] Furthermore, a transmission rod is fixedly connected to one side of the transmission wheel, an elliptical pin is fixedly connected to one end of the transmission rod, a fixed rod is fixedly connected to one side of the elliptical pin, a perforated coupling is movably connected to the middle of the fixed rod, a fixed pin is movably connected to the top of the perforated coupling, movable blocks are fixedly connected to both sides of the fixed pin, a reset chamber shell is fixedly connected to the top of the movable blocks, a reset spring is fixedly connected to the top of the inner cavity of the reset chamber shell, a conical top block is fixedly connected to the bottom of the reset spring, a reset rod is fixedly connected to the top of the conical top block, a telescopic shell is fixedly connected to the top of the reset rod, the middle of the transmission rod penetrates the interior of the base, and a movable groove is formed inside the base.

[0014] Furthermore, the sand filtering device includes a sand filtering shell, with rolling groove rings movably connected to both sides of the sand filtering shell, a support plate fixedly connected to the bottom of the sand filtering shell, a bearing support fixedly connected to the top of the support plate, a roller drive rod movably connected to the middle of the bearing support, a connecting column two fixedly connected to one end of the roller drive rod, an output bevel gear fixedly connected to one end of the connecting column two, rollers fixedly connected to both ends of the roller drive rod, and a narrow support leg fixedly connected to the bottom of the bearing support.

[0015] Furthermore, a filter roller is fixedly connected to the inner wall of the rolling groove ring, a filter hole is provided on the side wall of the filter roller, and a sand receiving shell is movably installed on one side of the filter roller.

[0016] Furthermore, a transmission rod gear is fixedly installed in the middle of the roller transmission rod, a transmission chain meshes with the outer side of the transmission rod gear, a motor transmission gear meshes with one end of the transmission chain, a motor is fixedly connected to the middle of the motor transmission gear, and a support plate is fixedly connected to one end of the motor.

[0017] Furthermore, a narrow support leg is fixedly connected to the bottom of the filter sand housing, and a circulating sand outlet is fixedly installed at one end of the filter sand housing. Both sides of the circulating sand outlet are fixedly connected to one side of the narrow support leg.

[0018] Furthermore, the side wall of the sand receiving shell is provided with a sand receiving port, one end of the sand receiving shell is fixedly connected to a bearing, a sand blowing fan is fixedly installed inside the bearing, and a sand blowing support is fixedly connected to the bottom of the sand receiving shell.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. This invention incorporates a sand suction device that uses wind power to remove suspended fine particles, preventing these particles from embedding into the surface of the casting in the circulating molding sand and causing "sand holes" on the surface of subsequent castings. This reduces the defect rate of castings, reduces dust entering the equipment, and minimizes wear on the bearings and springs of the vibrating sand machine, thereby improving the yield of castings and the service life of the equipment.

[0021] 2. This invention integrates a sand-filtering device and a drum sand-filtering screen at the bottom of the sand vibrator, thereby achieving integrated sand vibration and screening, and simultaneous completion of "sand vibration-screening-waste discharge". This reduces the equipment footprint, improves the yield of circulating sand, and further increases the yield of subsequent castings.

[0022] 3. This invention, by incorporating a vibration device and a sand conveying device, removes molding sand from castings and cleans molding sand from the grate's air passages through vibration. This facilitates uniform heating of the grate during use, reduces replacement frequency, allows for molding sand recycling, reduces cost consumption, and ensures more stable uniformity of the molding sand after thermal expansion, which helps reduce the defect rate of subsequent castings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the transmission of the vibration device and the sand filtering device of the present invention;

[0025] Figure 3This is a schematic diagram of the overall sand screening and conveying device of the present invention;

[0026] Figure 4 This is a cross-sectional schematic diagram of the sand screening and conveying device of the present invention;

[0027] Figure 5 This is a schematic diagram of the overall vibration device of the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of the vibration device of the present invention;

[0029] Figure 7 This is a schematic diagram of the sand filtering device of the present invention;

[0030] Figure 8 This is a cross-sectional schematic diagram of the sand filtering device of the present invention;

[0031] Figure 9 This is a schematic diagram of the bottom transmission of the sand filtering device of the present invention;

[0032] Figure 10 This is a schematic diagram of the circulating sand outlet of the present invention;

[0033] Figure 11 This is a schematic diagram of the overall sand suction device of the present invention;

[0034] The attached figures are labeled as follows: 1. Sand screening and conveying device; 101. Sand screening plate; 102. Side plate; 103. T-shaped transmission plate; 104. Inclined plate; 105. Sand collection trough; 106. Sand dropping funnel; 107. Sand screening hole; 2. Vibration device; 201. Base; 202. Transmission wheel; 203. Vibration housing; 204. Spring housing; 205. Spring; 206. Telescopic housing; 207. Transmission belt; 208. Bevel gear; 209. Connecting column one; 210. Transmission rod; 211. Elliptical pin; 212. Fixed rod; 213. Coupling with hole; 214. Fixed pin; 215. Movable block; 216. Conical top block; 217. Return spring; 218. 8. Reset rod; 219. Reset cavity shell; 220. Movable groove; 3. Sand filter device; 301. Sand filter shell; 302. Rolling groove ring; 303. Narrow support leg; 304. Sand filter hole; 305. Motor transmission gear; 306. Output bevel gear; 307. Connecting column two; 308. Drum transmission rod; 309. Roller; 310. Bearing support; 311. Support plate; 312. Motor; 313. Transmission chain; 314. Sand filter drum; 315. Transmission rod gear; 316. Circulating sand outlet; 4. Sand suction device; 401. Sand receiving shell; 402. Sand receiving port; 403. Bearing; 404. Sand blowing fan; 405. Sand blowing support. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The gasification furnace grate casting apparatus of the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Reference Figure 1 , Figure 2 The present invention provides a casting device for a gasifier grate. A vibrating device 2 is movably installed at the bottom of a sand screening and conveying device 1, and a sand filtering device 3 is fixedly installed at the bottom of the sand screening and conveying device 1. The vibrating device 2 and the sand filtering device 3 are connected in a transmission connection. A sand suction device 4 is movably installed on one side of the sand filtering device 3. An output bevel gear 306 is fixedly connected to one side of the sand filtering device 3, and a bevel gear 208 is fixedly connected to one side of the vibrating device 2. One side of the bevel gear 208 meshes with one side of the output bevel gear 306.

[0037] A motor 312 is installed at the bottom of the sand filtering device 3 to drive the operation of the bevel gear 208 and the output bevel gear 306, so that the vibration device 2 and the sand filtering device 3 are in operation. The right side of the sand screening and conveying device 1 is shifted downward, and the casting is transported to the right side by gravity and the shaking generated by the vibration device 2. The right side of the sand filtering device 3 is also shifted downward, and the molding sand is poured out to the right side by gravity and the rolling of the sand filtering roller 314. Vibration devices 2 are respectively set below the four corners of the sand screening and conveying device 1 to make the shaking more uniform.

[0038] Reference Figure 3 , Figure 4 The present invention provides a casting device for a gasifier grate. The sand screening and conveying device 1 includes a sand screening plate 101, side plates 102 are fixedly connected to both sides of the sand screening plate 101, an inclined plate 104 is fixedly connected to one end of the sand screening plate 101, a T-shaped transmission plate 103 is fixedly connected to one side of the side plate 102, a sand collecting trough 105 is fixedly connected to the bottom of the sand screening plate 101, a sand dropping funnel 106 is fixedly connected to one end of the sand collecting trough 105, and a sand screening hole 107 is opened inside the sand screening plate 101.

[0039] The left side of the sand collecting trough 105 is offset downwards, using gravity and shaking to pour the molding sand into the sand falling funnel 106. The bottom and sides of the sand collecting trough 105 are closed to prevent the molding sand from leaking out. The side plate 102 prevents the casting from falling out of the sand screening and conveying device 1 when vibrating. The sand screening hole 107 separates the molding sand and the casting.

[0040] Reference Figure 5The present invention provides a casting device for a gasifier grate. A telescopic shell 206 is fixedly connected to the bottom of a T-shaped transmission plate 103. A vibrating shell 203 is movably connected to the bottom of the telescopic shell 206. A base 201 is fixedly connected to the bottom of the vibrating shell 203. A spring shell 204 is fixedly connected to the top of the base 201. A spring 205 is fixedly connected inside the spring shell 204. The top of the spring 205 is fixedly connected to the bottom of the T-shaped transmission plate 103.

[0041] The spring housing 204 prevents the spring 205 from deforming and becoming misaligned. The vibration housing 203 provides the movement trajectory and range of the telescopic housing 206. The spring 205 enables the T-shaped transmission plate 103 to reset during vibration and provides reset vibration. When the vibration device 2 is not in operation, it is supported by the internal support device of the vibration housing 203, and the spring 205 is only auxiliary.

[0042] Reference Figure 5 The present invention provides a casting device for a gasifier grate, wherein a connecting column 209 is fixedly connected to one side of a bevel gear 208, and a transmission wheel 202 is fixedly connected to one side of the connecting column 209. The transmission wheel 202 is internally connected to a transmission belt 207. The transmission belt 207 is driven by the rotation of the transmission wheel 202, which links the four vibration devices 2 and makes the four vibration devices 2 move synchronously.

[0043] Reference Figure 6 This invention provides a casting device for a gasifier grate. A transmission rod 210 is fixedly connected to one side of a transmission wheel 202. An elliptical pin 211 is fixedly connected to one end of the transmission rod 210. A fixed rod 212 is fixedly connected to one side of the elliptical pin 211. A perforated coupling 213 is movably connected to the middle of the fixed rod 212. A fixed pin 214 is movably connected to the top of the perforated coupling 213. Movable blocks 215 are fixedly connected to both sides of the fixed pin 214. A reset chamber shell 219 is fixedly connected to the top of the movable block 215. A reset spring 217 is fixedly connected to the top of the inner cavity of the reset chamber shell 219. A conical top block 216 is fixedly connected to the bottom of the reset spring 217. A reset rod 218 is fixedly connected to the top of the conical top block 216. A telescopic shell 206 is fixedly connected to the top of the reset rod 218. The middle of the transmission rod 210 penetrates the interior of the base 201. A movable groove 220 is provided inside the base 201.

[0044] After the transmission wheel 202 rotates, it drives the transmission rod 210, causing the elliptical pin 211 to rotate and pull the perforated coupling 213 to perform a reciprocating motion. This also drives the movable block 215 and the reset chamber housing 219 to extend and retract vertically. When the movable block 215 pushes upward, the reset spring 217, in order to eliminate tension, drives the conical top block 216 and the reset rod 218 to move upward, generating vibration in the sand screening conveying device 1. When the reset rod 218 moves upward, the movable block 215 moves downward, and the reset spring 217, in order to eliminate pressure, drives the reset rod 218 to move downward again. This process repeats, generating a uniform and frequent vibration in the sand screening conveying device 1. When the vibrating device 2 moves up and down, the spring 205 generates stress on the movement between the sand screening conveying device 1 and the vibrating device 2, further increasing the vibration frequency.

[0045] Reference Figure 7 This invention provides a casting device for a gasifier grate. The sand filtering device 3 includes a sand filtering shell 301. Rolling groove rings 302 are movably connected to both sides of the sand filtering shell 301. A support plate 311 is fixedly connected to the bottom of the sand filtering shell 301. A bearing support 310 is fixedly connected to the top of the support plate 311. A roller drive rod 308 is movably connected to the middle of the bearing support 310. A connecting column 307 is fixedly connected to one end of the roller drive rod 308. An output bevel gear 306 is fixedly connected to one end of the connecting column 307. Rollers 309 are fixedly connected to both ends of the roller drive rod 308. A narrow support leg 303 is fixedly connected to the bottom of the bearing support 310.

[0046] The roller drive rod 308 drives the roller 309, the connecting column 307, the sand-falling funnel 106, and the bearing support 310. The bearing support 310 only restricts the position of the roller drive rod 308, but does not restrict the rotation of the roller drive rod 308. The friction generated between the roller 309 and the rolling groove ring 302 causes the rolling groove ring 302 to rotate. The support plate 311 and the narrow support leg 303 provide stability to the sand filter device 3 and fix the sand filter housing 301 to prevent it from rotating.

[0047] Reference Figure 8 The present invention provides a casting device for a gasifier grate, wherein a sand filter roller 314 is fixedly connected to the inner wall of the rolling groove ring 302, a sand filter hole 304 is provided on the side wall of the sand filter roller 314, and a sand receiving shell 401 is movably installed on one side of the sand filter roller 314.

[0048] The rotating groove ring 302 drives the sand filter roller 314 to rotate. The sand receiving shell 401 is only attached to the inner wall of the sand filter roller 314 and does not affect the rotation of the sand filter roller 314. The sand filter hole 304 retains the excessively large molding sand and filters the appropriate molding sand into the cavity between the sand filter roller 314 and the sand filter shell 301. The diameter of the sand filter hole 304 is smaller than that of the sand sieve hole 107, and the specific size varies depending on the molding sand used.

[0049] Reference Figure 9 This invention provides a casting device for a gasifier grate. A transmission gear 315 is fixedly installed in the middle of the roller transmission rod 308. A transmission chain 313 meshes with the outer side of the transmission gear 315. A motor transmission gear 305 meshes with one end of the transmission chain 313. A motor 312 is fixedly connected to the middle of the motor transmission gear 305. A support plate 311 is fixedly connected to one end of the motor 312. The motor 312 connects to the two motor transmission gears 305 to make it rotate. The motor transmission gears 305 drive the transmission chain 313 to rotate and mesh with the transmission gear 315, thereby realizing the rotation of the roller transmission rod 308.

[0050] Reference Figure 10 The present invention provides a casting device for a gasifier grate. A narrow support leg 303 is fixedly connected to the bottom of the filter sand shell 301. A circulating sand outlet 316 is fixedly installed at one end of the filter sand shell 301. The two sides of the circulating sand outlet 316 are fixedly connected to one side of the narrow support leg 303. The narrow support leg 303 has a circulating sand outlet 316 in the middle, which is the outlet for filtering molding sand. A magnetic device can be installed inside the circulating sand outlet 316 to remove impurities in the molding sand.

[0051] Reference Figure 11 The present invention provides a casting device for a gasifier grate. A sand receiving port 402 is provided on the side wall of the sand receiving shell 401. A bearing 403 is fixedly connected to one end of the sand receiving shell 401. A sand blowing fan 404 is fixedly installed inside the bearing 403. A sand blowing support 405 is fixedly connected to the bottom of the sand receiving shell 401.

[0052] The sand inlet 402 is aligned with the sand outlet of the sand discharge funnel 106. To prevent vibration, it is not connected to the sand discharge funnel 106. The sand blowing fan 404 is connected to an external control device to generate suction, which sucks away the fine particles in the molding sand falling from the sand discharge funnel 106. An air bag can be installed on the other side of the bearing 403 to collect fine particles and reduce pollution.

[0053] The working principle of this invention is as follows: When the motor 312 starts to operate, it drives the roller transmission rod 308 and the roller 309 to rotate through the transmission chain 313. The roller 309 drives the rolling groove ring 302 to rotate by friction, and causes the filter sand roller 314 to rotate inside the filter sand shell 301 to screen the molding sand. The bearing support 310 limits the two ends of the roller transmission rod 308. The rotation of the output bevel gear 306 drives the bevel gear 208 that meshes with it. The rotation of the bevel gear 208 drives the transmission wheel 202 and the transmission rod 210. The rotation of the transmission wheel 202 causes the transmission belt 207 to start operating, so that the transmission rods 210 inside the four vibration devices 2 operate and rotate synchronously.

[0054] The rotation of the transmission rod 210 causes the elliptical pin 211 to rotate, pulling the perforated coupling 213 to reciprocate. This, in turn, causes the movable block 215 and the reset chamber housing 219 to extend and retract vertically. When the movable block 215 pushes upward, the reset spring 217, in order to relieve tension, drives the conical top block 216 and the reset rod 218 to move upward, generating vibration in the sand screening conveying device 1. When the reset rod 218 moves upward, the movable block 215 moves downward. To relieve pressure, the reset spring 217 drives the reset rod 218 to move downward again. This cycle repeats, generating a uniform and frequent vibration in the sand screening conveying device 1. When the vibrating device 2 moves up and down, the spring 205 generates stress on the movement between the sand screening conveying device 1 and the vibrating device 2.

[0055] After being vibrated by the vibration device 2, the T-shaped transmission plate 103 feeds back to the sand collecting trough 105 and the sand screening plate 101, transporting the casting to the left side of the sand screening plate 101. Under the action of vibration and the inclined surface of the sand screening plate 101, the casting moves towards the inclined plate 104 until it leaves the device. During this process, the molding sand attached to the casting is shaken by vibration. The molding sand is screened through the sand screening holes 107 into the sand collecting trough 105. Similarly, under the inclined surface and vibration of the sand collecting trough 105, the molding sand moves to the left side of the sand falling funnel 106. During the process of sand falling into the sand funnel 106, the suction of the sand blowing fan 404 draws the tiny particles contained in the molding sand into the sand receiving shell 401. Since both the sand receiving shell 401 and the sand filtering device 3 are tilted to the left, the molding sand enters into the sand filtering drum 314. Through the rolling screening of the sand filtering drum 314, the excessively large particles inside the molding sand are retained, and the medium-sized particles, i.e., the circulating molding sand, are screened into the cavity formed by the sand filtering shell 301 and the sand filtering drum 314, and fall through the circulating sand outlet 316 and are collected.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A furnace grate casting device for a gasification furnace, comprising a sand screening conveyor device (1), characterized in that: The bottom of the sand screening conveying device (1) is movably provided with a vibrating device (2), and the bottom of the sand screening conveying device (1) is fixedly provided with a sand filtering device (3), the vibrating device (2) is in transmission connection with the sand filtering device (3), one side of the sand filtering device (3) is movably provided with a sand suction device (4), one side of the sand filtering device (3) is fixedly connected with an output bevel gear (306), one side of the vibrating device (2) is fixedly connected with a bevel gear (208), one side of the bevel gear (208) is in meshing with one side of the output bevel gear (306); The sand screening conveying device (1) comprises a sand screening plate (101), both sides of the sand screening plate (101) are fixedly connected with side plates (102), one end of the sand screening plate (101) is fixedly connected with an inclined plate (104), one side of the side plate (102) is fixedly connected with a T-shaped transmission plate (103), the bottom of the sand screening plate (101) is fixedly connected with a sand collecting groove (105), one end of the sand collecting groove (105) is fixedly connected with a sand falling funnel (106), and the sand screening plate (101) is internally provided with a sand screening hole (107); The bottom of the T-shaped transmission plate (103) is fixedly connected with an extension shell (206), the bottom of the extension shell (206) is movably connected with a vibrating shell (203), the bottom of the vibrating shell (203) is fixedly connected with a base (201), the top of the base (201) is fixedly connected with a spring shell (204), the inside of the spring shell (204) is fixedly connected with a spring (205), and the top of the spring (205) is fixedly connected with the bottom of the T-shaped transmission plate (103); One side of the bevel gear (208) is fixedly connected with a connecting column (209), one side of the connecting column (209) is fixedly connected with a conveying wheel (202), and the inside of the conveying wheel (202) is in transmission connection with a transmission belt (207); One side of the conveying wheel (202) is fixedly connected with a transmission rod (210), one end of the transmission rod (210) is fixedly connected with an oval pin (211), one side of the oval pin (211) is fixedly connected with a fixed rod (212), the middle of the fixed rod (212) is movably connected with a hole shaft coupling (213), the top of the hole shaft coupling (213) is movably connected with a fixed pin (214), both sides of the fixed pin (214) are fixedly connected with movable blocks (215), the top of the movable blocks (215) is fixedly connected with a reset cavity shell (219), the inside of the reset cavity shell (219) is fixedly connected with a reset spring (217) at the top, the bottom of the reset spring (217) is fixedly connected with a conical top block (216), the top of the conical top block (216) is fixedly connected with a reset rod (218), the top of the reset rod (218) is fixedly connected with the extension shell (206), the middle of the transmission rod (210) penetrates through the inside of the base (201), and the inside of the base (201) is provided with a movable groove (220). The sand filtering device (3) comprises a sand filtering shell (301), the two sides of the sand filtering shell (301) are movably connected with rolling groove rings (302), the bottom of the sand filtering shell (301) is fixedly connected with a support plate (311), the top of the support plate (311) is fixedly connected with a bearing support (310), the middle part of the bearing support (310) is movably connected with a roller transmission rod (308), one end of the roller transmission rod (308) is fixedly connected with a connecting column II (307), one end of the connecting column II (307) is fixedly connected with an output bevel gear (306), the two ends of the roller transmission rod (308) are fixedly connected with rollers (309), and the bottom of the bearing support (310) is fixedly connected with narrow supporting legs (303).

2. The gasifier grate casting apparatus according to claim 1, wherein: The inner wall of the rolling groove ring (302) is fixedly connected with a sand filtering roller (314), the sidewall of the sand filtering roller (314) is provided with sand filtering holes (304), and one side of the sand filtering roller (314) is movably mounted with a sand receiving shell (401).

3. The casting device for a gasifier grate according to claim 1, characterized in that: The middle part of the roller transmission rod (308) is fixedly mounted with a transmission rod gear (315), the outer side of the transmission rod gear (315) is meshed with a transmission chain (313), one end of the transmission chain (313) is meshed with a motor transmission gear (305), the middle part of the motor transmission gear (305) is fixedly connected with a motor (312), and one end of the motor (312) is fixedly connected with the support plate (311).

4. The gasifier grate casting apparatus according to claim 1, wherein: The bottom of the sand filtering shell (301) is fixedly connected with the narrow supporting legs (303), one end of the sand filtering shell (301) is fixedly mounted with a circulating sand outlet (316), and the two sides of the circulating sand outlet (316) are fixedly connected with one side of the narrow supporting legs (303).

5. The gasifier grate casting apparatus according to claim 2, wherein: The sidewall of the sand receiving shell (401) is provided with a sand receiving opening (402), one end of the sand receiving shell (401) is fixedly connected with a bearing (403), the inside of the bearing (403) is fixedly mounted with a sand blowing fan (404), and the bottom of the sand receiving shell (401) is fixedly connected with a sand blowing support (405).

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