130results about "Clinker production" patented technology

The utility model discloses a low-resistance inlet structure of a cyclone of a cement preheater, and relates to the field of cement industrial production. The feeding device comprises an inlet air pipe, a volute body is installed on one side of the inlet air pipe, an inner cylinder integrated with the volute body is welded to the middle of the volute body, a column body is installed on the lower side of the volute body, a discharging cone is installed below the column body, a plurality of installation frames are installed on the peripheral side of the column body, and the installation frames are installed on the lower side of the volute body. A discharging pipe is installed at an outlet of the discharging cone, and a low-resistance inlet assembly is arranged at an inlet of the inlet air pipe. According to the utility model, the air conveying pipe and the expansion shell are arranged at the inlet air pipe, and the expansion shell is arranged at the top of the inlet air pipe and the top of the air conveying pipe, so that the width of the inlet air pipe is kept unchanged, the height of the air inlet is increased, and the area of the inlet of the cyclone cylinder is properly increased, and in this way, the resistance can be effectively reduced, and the influence on the separation efficiency of the cyclone separator is small.

The utility model relates to the technical field of grate coolers, and provides a grate cooler air inlet structure which comprises a machine body, a supporting plate, a blowing assembly, a conveying pipe and an adjusting assembly, the blowing assembly is arranged on the supporting plate, one end of the conveying pipe is connected with the blowing assembly, and the other end of the conveying pipe penetrates out of the machine body; the adjusting assembly comprises a motor, a rotating pipe, a supporting pipe, a first gear, a second gear, a threaded rod and a limiting rod, the motor, the rotating pipe and the supporting pipe are all arranged on the inner wall of the machine body, the motor drives the first gear to rotate, the first gear is meshed with the second gear, the second gear is arranged on the rotating pipe, and the threaded rod is sleeved with the rotating pipe in a threaded mode; the end, away from the rotating pipe, of the threaded rod is connected with the supporting plate, one end of the limiting rod is connected with the supporting plate, and the other end of the limiting rod is slidably installed in the supporting pipe. By arranging the adjusting mechanism, the distance between the blowing assembly and the clinker on the grate plate can be adjusted according to the size of the clinker, and the cooling efficiency of the clinker is improved.

The application discloses a control system and a control method for optimizing clinker cooling of a grate cooler, and aims to provide a control system and a control method for optimizing clinker cooling of a grate cooler, wherein the inside of a box body of the grate cooler is sequentially divided into multiple cooling sections according to the material flow direction, cement clinker formed after raw materials are calcined flows into the cooling sections of the grate cooler, air doors of each air cooling chamber of the cooling sections are sequentially opened to blow and cool the cement clinker, according to the air pressure and the temperature of the current cooling section, the high-pressure cooling air flow above the grate bed is opened or closed, the air pressure on both sides of the grate bed is adjusted, the cement clinker is conveyed through the grate bed in the box body from the feeding end of the grate bed to the discharging end to realize step-by-step blowing and cooling. The application automatically adjusts the air pressure on both sides in the cooling area, solves the problem that the air in the air-filled beam cannot blow through the cement clinker to form a “red river” phenomenon due to air leakage at a position with a thin material layer, and improves the clinker cooling efficiency.

The utility model discloses a cement clinker calcining and decomposing device, which relates to the technical field of cement clinker production and comprises a supporting frame, a plurality of supporting rods are arranged on one side of the top end of the supporting frame, a fuel connecting cylinder is arranged at the top ends of the supporting rods, a feeding cylinder is arranged at one end of the fuel connecting cylinder, and a preheating assembly is arranged at the top end of the feeding cylinder. A fixing rod is arranged on the other side of the top end of the supporting frame, a discharging box is arranged at the top end of the fixing rod and connected with the feeding cylinder through a furnace cylinder assembly, and an exhaust pipe is arranged at the top end of the discharging box. According to the utility model, by arranging the preheating assembly, the cement raw material can be preheated, so that the cement raw material can reach the firing temperature more quickly, thereby effectively shortening the time required by calcination and decomposition, not only improving the production efficiency, but also reducing the heat consumption of clinker firing, and further improving the overall production benefit.

A combustion method using a fuel combustion device, a cement manufacturing method, and a cement calcination facility including a fuel combustion device, in which while the amount of a fossil fuel used as a fuel supplied to a fuel combustion device provided in various facilities such as a cement calcination facility is reduced, the radiation heat transfer amounts of various burners are maintained, whereby the amount of heat transferred to a heating target such as a powder raw material of cement clinker is maintained to maintain a state suitable for calcination, the amount of carbon dioxide emitted from the various facilities is reduced, and the various facilities can be operated at a low cost, and a fuel combustion device including a fuel supply mechanism having a mechanism that supplies a flammable powder, a mechanism that supplies a fuel gas, and a mechanism that supplies a non-flammable powder are used.

The utility model relates to the technical field of cement plant kilns, and provides a biomass fuel auxiliary scattering and discharging device which comprises a hopper and a frame, a driving piece is arranged on the outer surface of the hopper, and the inner wall of the hopper is rotationally connected with a first scattering roller, a second scattering roller and a third scattering roller. Linkage pieces are arranged among the first scattering roller, the second scattering roller and the third scattering roller, and scattering cutters are fixedly connected to the surfaces of the first scattering roller, the second scattering roller and the third scattering roller. After the biofuel enters the hopper, a motor drives a first scattering roller to rotate through a speed reducer, a first synchronous wheel drives a second synchronous wheel and a second scattering roller to rotate through a first synchronous belt, and the first synchronous wheel drives a third synchronous wheel and a third scattering roller to rotate through a second synchronous belt, so that a scattering cutter rotates; and in addition, a vibration motor is combined, so that when the hopper is vibrated, the biofuel is convenient to discharge.

The utility model relates to the technical field of cement production, in particular to an automatic cement batching device for a cement production line, which comprises a base, the upper end of the base is fixedly connected with a batching box, the left part of the upper end of the batching box is fixedly connected with a batching component in a penetrating manner, and the upper part of the outer surface of the batching box is fixedly connected with a mounting plate; a connecting plate is fixedly connected to the rear part of the upper end of the batching box, and a control mechanism is fixedly mounted at the upper end of the mounting plate. According to the automatic cement batching device for the cement production line, the independent cement batching feeding pipe and the cement raw material feeding pipe are arranged, and the electronic valves are mounted on the outer surfaces of the cement batching feeding pipe and the cement raw material feeding pipe, so that an operator can accurately control the feeding amount of cement batching and cement raw materials, and the feeding amount of the cement raw materials can be accurately controlled by adjusting the opening degrees of the electronic valves; different materials can be added according to a preset formula, so that the accuracy of the raw material ratio in the cement production process is ensured, and a cement product with high quality and stable performance can be produced.

The utility model provides a low-temperature waste heat flash evaporation and dual-pressure hybrid power generation system which comprises a first rotary kiln structure, a flash evaporation power generation system connected to the first rotary kiln structure, a second rotary kiln structure and a dual-pressure power generation system connected to the second rotary kiln structure. High-temperature steam of the dual-pressure power generation system is connected to the steam outlet end of the flash evaporation power generation system, gradient utilization of heat energy is achieved, surplus power generation capacity of the flash evaporation power generation system is fully utilized, waste of the heat energy is avoided, different waste heat can be fully utilized through water vapor complementation, the overall utilization rate of the waste heat is remarkably improved, and the energy consumption is reduced. And meanwhile, energy consumption and emission are reduced, and remarkable economic and environmental benefits are achieved.

The invention relates to a method for producing material containing hydrated cement, wherein the material is crushed in a first crushing device (2) and then supplied to a reactor (3) in which the material is mixed with an aqueous liquid and CO2 and in which a mixing movement of the material is generated, wherein the material removed from the reactor (3) is split into at least two fractions by means of a grading device (20). Furthermore, the temperature and the pressure in the reactor (3) are influenced such that an overpresssure in comparison with the atmospheric pressure and a temperature higher than 100°C are adjusted.

The utility model relates to the technical field of cement clinker processing, in particular to an efficient and energy-saving cement clinker device which comprises a machine body, the machine body comprises a fan shell, a motor is fixedly installed on the inner side of the fan shell, the output end of the motor is fixedly connected with a rotating shaft, a connecting shaft is arranged on the surface of the rotating shaft, and the connecting shaft is connected with the fan shell. Blades are mounted on the surface of the connecting shaft; and mounting mechanisms are arranged on the inner sides of the blades. According to the utility model, through the cooperation of the first positioning block and the first positioning groove and the cooperation of the second positioning block and the second positioning groove, the installation of the blade on the connecting shaft can be positioned, so that the installation of the blade can be more accurate and convenient; and the connecting block can drive the inserting rod and the first inserting groove to be inserted and separated, and then the blades and the connecting shaft can be rapidly fixed and disassembled, so that when the blades are damaged, the blades are conveniently maintained or replaced.

The utility model relates to the technical field of decomposing furnace feeding, and discloses a device for conveying powdery alternative fuel into a decomposing furnace, which comprises a storage bin, a metering scale for weighing the alternative fuel is arranged on the bottom wall of the inner side of the storage bin, the top of the storage bin is communicated with a feeding bin, and the feeding bin is communicated with a discharging bin. The exterior of the feeding bin and the storage bin are connected with three-way valves through pipelines, the other ends of the three-way valves are connected with a fan, a linkage type switching assembly is arranged between the storage bin and the feeding bin, a blocking filter plate located at the joint of the feeding bin and the three-way valves is arranged in the feeding bin, the exterior of the feeding bin communicates with a feeding pipeline, and the feeding pipeline communicates with the storage bin. And the outer part of the storage bin is communicated with a discharging pipeline. The device for conveying the powdery alternative fuel into the decomposing furnace has the advantages that the foam can be conveniently fed into the decomposing furnace, the retention time of the foam in the external environment is shortened, the environmental pollution is improved, the value of the foam is brought into play more efficiently, and the production cost is reduced.

The utility model discloses a split grate cooler guard plate which comprises an upper guard plate body, a first installation cavity is formed in the upper guard plate body, a first installation protruding block is integrally and fixedly installed below the rear end of the upper guard plate body, a lower guard plate body is installed below the upper guard plate body, and a second installation cavity is formed in the lower guard plate body. And a conveying roller is mounted in the second mounting cavity, mounting bearings are mounted at the upper end and the lower end of the conveying roller, and a transmission belt is mounted on the outer surface of the conveying roller. According to the grate cooler guard plate, the transmission belt capable of performing transmission is arranged in the split grate cooler guard plate, so that the movable grate plate can drive the transmission belt in the grate cooler guard plate to move through friction force when the movable grate plate reciprocates with the transmission belt and the movable grate plate reciprocates, and further, friction damage caused by relative movement between the movable grate plate and the grate cooler guard plate is avoided; and the service lives of the movable grate plate and the grate cooler guard plate are prolonged.

The present invention provides a cementitious reagent material produced from globally abundant inorganic feedstocks, methods for the manufacture of such cementitious reagent material and for forming the reagent material as microspherical glassy particles, and also provides an apparatus, system, and method for the thermochemical production of glassy cementitious reagent having a spherical morphology. [Solution] A cementitious reagent is provided, which includes particles containing atoms of Si, Al, Fe, Ca, Mg, Na, and K, said particles having a spherical morphology with an average circularity (R) of >0.8, and said particles being at least 80% X-ray amorphous.

The utility model relates to the technical field of cement production, and discloses a ground cement cooling device of a cement grinding mill. The ground cement cooling device of the cement grinding mill comprises a bottom plate, a supporting rod is fixedly installed above the bottom plate, a limiting pipe is fixedly installed above the supporting rod, a feeding port is fixedly formed in the upper portion of the limiting pipe, a limiting frame is fixedly installed at the left end of the limiting pipe, a driving pipe is movably installed in the center of the limiting pipe, and the driving pipe is fixedly installed at the left end of the limiting pipe. The heat conduction area between the heat pipe and air flow can be increased through the heat dissipation fins, the air flow is generated between the heat dissipation fins through the fans on the front side and the rear side, heat of the heat pipe is taken away through the air flow, and therefore water in the water tank can be rapidly cooled; the temperature difference between the cement and the circulating water is too small, so that the heat conduction efficiency is influenced, and the cooling effect is influenced, which are caused by too high temperature of the circulating water discharged out of the water tank due to long-time operation, is avoided.

The utility model relates to the technical field of cement production, and discloses an efficient cement kiln preheating device. The efficient cement kiln preheating device comprises a preheating structure assembly, a conveying structure assembly is installed on the left side of the preheating structure assembly, a hot air pipe is installed at the upper end of the conveying structure assembly, a connecting pipe is installed on the left side of the hot air pipe, and a hot air pump is installed on the left side of the connecting pipe; the device comprises a conveying structure assembly, a uniform material scattering assembly is installed on the left side of the conveying structure assembly, a conveying frame is installed at the upper end of the uniform material scattering assembly, and a pouring groove is formed in the upper end of the conveying frame. In the prior art, subsequent materials are caked and fed unevenly, the heat exchange efficiency and the decomposition rate of the subsequent materials are affected, conveyed hot air is unstable when a cement kiln preheater is used, and the subsequent material waste heat effect is poor.

Provided is a system for enhancing combustion in a kiln, including a kiln combustion chamber disposed within the kiln, the kiln combustion chamber having an atmosphere therein; a main burner for heating the atmosphere; a calciner assembly for providing a substance to be heated into the kiln combustion chamber; a precalciner including a precalciner combustion chamber disposed within the precalciner for receiving a biomass fuel for combustion in the precalciner combustion chamber, the precalciner combustion chamber in communication with the kiln combustion chamber; and a precalciner oxygen injector in fluid communication with the precalciner combustion chamber for providing a first oxygen stream into the biomass fuel for the combustion. A related apparatus and method for enhancing combustion with oxygen and biomass fuel are also provided.

To provide a method for producing a cement clinker, capable of reducing hexavalent chromium content even when waste is contained as a cement clinker raw material.SOLUTION: This invention relates to a method for producing a cement clinker having reduced hexavalent chromium content wherein, when a cement clinker raw material containing a waste is supplied to a rotary kiln and calcined, a sulfate is charged near a burning point of a main burner of the rotary kiln, and a combustible material is charged in a range from a vicinity of the burning point to an outlet of a cement kiln.SELECTED DRAWING: Figure 1

The high-temperature-resistant sealing device comprises a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are connected in a sleeved mode in a sliding mode, a sealing cabin is installed on the first connecting pipe, a sealing pipe is fixedly installed on the second connecting pipe, the sealing pipe is connected with the sealing cabin in a sliding mode, and the sealing cabin is connected with the sealing pipe in a sliding mode. The first connecting pipe and the second connecting pipe are provided with multiple sets of annularly-distributed bolts, the bolts are sleeved with first springs, the two ends of each first spring are fixedly connected with the first connecting pipe and the second connecting pipe correspondingly, a mounting pipe is fixedly mounted on the sealed cabin, and the sealed cabin communicates with the mounting pipe. Sealing connection between the first connecting pipe and the second connecting pipe is achieved through the arranged sealing cabin and the arranged sealing pipe, the sealing cabin is filled with sealing oil, the sealing cabin is matched with the sealing pipe, and a push plate in a mounting pipe and a first spring on a bolt provide a certain movement space between the first connecting pipe and the second connecting pipe.

The utility model belongs to the technical field of cement processing, particularly relates to a raw material homogenizing device for cement production, and provides the following scheme aiming at the problems of non-uniform mixing and easiness in blockage in a discharging process in the background technology: the raw material homogenizing device comprises a homogenizing tank, and a vertical stirring mechanism is arranged in the homogenizing tank; transverse stirring mechanisms are arranged on two sides of the homogenizing tank. Through the synergistic effect of the vertical stirring mechanism and the transverse stirring mechanism, three-dimensional stirring is formed, a stirring blind area is eliminated, the mixing uniformity of raw materials is remarkably improved, the stirring speed is accurately controlled by utilizing the servo motor, the stirring strength can be adjusted according to material characteristics, and invalid energy consumption is reduced; material flowing is assisted through high-frequency vibration, material accumulation and blockage are effectively avoided in combination with continuous conveying of the discharging mechanism, vibration transmission in the discharging process is reduced through the design of the soft connector, and the service life of equipment is prolonged.

The utility model relates to the technical field of cement production devices, and discloses a decomposing furnace necking protection device which comprises a machining mechanism, a protection mechanism is fixedly connected to the top of the machining mechanism, a connecting mechanism is fixedly connected to the outer side of the machining mechanism, and the protection mechanism comprises a necking body. A first sealing ring is fixedly connected to the bottom of the necking body, a second sealing ring is slidably connected to the bottom of the first sealing ring, a fixing block is fixedly connected to the bottom of the second sealing ring, and a limiting assembly is fixedly connected to the outer side of the necking body and comprises a fixing plate. The inner side of the fixing plate is fixedly connected to the outer side of the necking body. According to the utility model, dust or other substances are prevented from leaking, so that the stability and the sealing performance of the internal environment of the necking protection device of the decomposing furnace are ensured, the normal working state of the decomposing furnace is favorably maintained, and the possibility of heat loss and material leakage is reduced.

The rotary cement kiln door comprises a first door body and a second door body which are rotationally installed at a door frame through a door shaft assembly, and the opposite sides of the first door body and the second door body are each provided with an arc-shaped notch so that a combustor through hole can be formed after installation; the upper side and the lower side of the first door body and the upper side and the lower side of the second door body are connected with the door frame through buckle assemblies, handles are arranged at the positions, located above the arc-shaped notches, of the first door body and the second door body, and a high-temperature-resistant camera is installed on the first door body. When the door is used, the first door body and the second door body can be easily opened or closed by one person through cooperation of the handle and the door shaft assembly, time and labor are saved in the operation process, the door frame is not prone to deformation in the operation process, and therefore air leakage and sand material leakage can be effectively avoided, energy consumption is reduced, and field environmental sanitation is ensured; the first door body and the second door body are fixedly connected with the door frame by operating the buckle assembly, and the condition in the rotary kiln can be observed through the high-temperature-resistant camera.

The utility model relates to the field of cement building materials, in particular to an alternative fuel conveying device which comprises a decomposing furnace body and further comprises a conveying assembly, the conveying assembly comprises a tertiary air pipe, a discharging pipe, a shell, a dividing wheel, a feeding pipe and a centralizing component, the tertiary air pipe is connected with the decomposing furnace body, the discharging pipe is connected with the tertiary air pipe, the shell is connected with the discharging pipe, and the dividing wheel is connected with the feeding pipe. The grid wheel is arranged in the shell, the feeding pipe is connected with the shell, and the concentration component is arranged on the feeding pipe, so that alternative fuel is accurately and uniformly fed through the grid wheel, carbon monoxide fluctuation is avoided, material calcination in a kiln is prevented from being affected, and alternative fuel combustion maximization is achieved.

The utility model discloses a weight reduction type rotary kiln large gear ring, and belongs to the technical field of cement production equipment. Comprising a plurality of gear ring sections, the gear ring sections form a large gear ring body, cavity structures are formed in the gear ring sections, a plurality of reinforcing ribs are fixedly arranged on the inner walls of the cavity structures, and connecting devices are arranged among the gear ring sections and used for positioning and connecting the gear ring sections. The cavity structure is adopted in the gear ring section, then the reinforcing ribs are arranged, the structural strength of the gear ring section is enhanced, the same using performance is met, and compared with a traditional solid large gear ring which is integrally cast or forged, the use amount of materials is greatly reduced, the weight of the whole gear ring is reduced, and the manufacturing cost is reduced; the large gear ring body is designed to be composed of the multiple gear ring sections, the manufacturing difficulty is effectively reduced, the size and weight of each gear ring section are relatively small, and machining and transportation in the manufacturing process are facilitated.

The utility model relates to the field of equipment manufacturing, in particular to ventilation quantity adjusting equipment and grate type cooling equipment. The ventilation quantity adjusting device comprises a supporting plate, a rotating disc and a preset number of blades. Ventilation openings are formed in the corresponding positions of the supporting plate and the rotating disc. Each blade is provided with a first connecting part and a second connecting part; the first connecting part is connected with the rotating disc, and the second connecting part is connected with the supporting plate; the rotating disc is used for being driven to rotate and driving all the blades to rotate through the first connecting part, so that the opening degree of the ventilation opening is adjusted through rotation of all the blades, and the air volume of all areas of the grate type cooling equipment is accurately controlled. The heat exchange efficiency can be effectively improved, and air blowing power consumption and air consumption can be effectively reduced.

The present invention provides a method for supplying oxygen-rich gas to an oxygen-consuming step, which comprises supplying an anode-side feed gas containing CO2 to the anode side of a solid oxide electrolysis cell to generate oxygen-rich gas with a low nitrogen content, and generating oxygen on the anode side of the solid oxide electrolysis cell. In this manner, an anode-side product gas containing at least a portion of the oxygen-rich gas is formed. The oxygen-rich gas has a low nitrogen content, and the temperature of the oxygen-rich gas exiting the solid oxide electrolysis cell is between 600 and 1000°C. This method has several advantages, primarily in terms of energy conservation.

The present invention relates to a cement production apparatus (10) comprising: - a preheater (12) for preheating raw meal; - a calcining furnace (14) for calcining the preheated raw meal; - a furnace (16) having a furnace burner (28) for calcining the raw meal to form cement clinker, wherein the furnace (16) has a combustion gas inlet for introducing combustion gas with an oxygen content of 30% to 75% into the furnace (16); and - a cooler (18) for cooling the cement clinker; wherein the calcining furnace (14) and the furnace (16) each have at least one fuel inlet (20) for introducing at least one fuel into the calcining furnace (14) and the furnace (16), wherein the calcining furnace (14) and the furnace (16) each have at least one inert gas inlet (64, 68) for introducing inert gas into the calcining furnace (14) and the furnace (16), respectively.

The utility model relates to the technical field of cement production, in particular to a cement clinker cooling device for cement production, which comprises a cooling mechanism and a fixing frame, the upper part of the front end of the cooling mechanism is fixedly connected with an operation board, a turnover mechanism is movably arranged in the cooling mechanism, and four corners of the lower end of the cooling mechanism are fixedly connected with mounting lugs. Supporting legs are movably connected to the four sets of mounting lugs through rotating shafts, a first motor is fixedly connected to the front portion of the upper end of the fixing frame, a screw rod is fixedly connected to the output end of the first motor, a sliding rod is fixedly connected to the rear portion between the upper inner wall and the lower inner wall of the fixing frame, and the screw rod and the sliding rod jointly penetrate through threads to be connected with a connecting plate in a clamped mode; and the upper end of the connecting plate is fixedly connected with the two groups of supporting legs at the right part. According to the cement clinker cooling device for cement production, a relatively closed space is arranged to cool clinker, dust raising is prevented, and dissipated waste heat can be utilized to prevent heat waste.

The utility model relates to the technical field of preheating links in cement production, in particular to a blanking device for a scattering box. Comprising a three-stage blanking pipe, a scattering box, a five-stage cyclone cylinder and a five-stage outlet ascending pipeline, the fifth-stage cyclone cylinder is positioned at the bottom of the fifth-stage outlet ascending pipeline; the third-stage discharging pipe is obliquely arranged, the bottom of the third-stage discharging pipe is connected with the material scattering box, and the material scattering box is located on one side of the fifth-stage outlet ascending pipeline and communicated with the fifth-stage outlet ascending pipeline. An ash removal hole is formed in the material scattering box; the pipe further comprises a hard pipe body. A plurality of concave steps are sequentially formed in the side wall of the pipe body in the axis direction of the pipe body; a handle is arranged at the top of the tube body; the bottom of the pipe body is inserted into the scattering box from the ash removal hole of the scattering box, and the handle is located outside the scattering box and fixed to the scattering box; according to the utility model, the problem that the materials directly enter the kiln due to short-circuit collapse of the materials after the hanging piece is broken is solved.

The anti-blocking detachable isolator for the grate gap of the grate cooler comprises an upper-layer net rack and a lower-layer net rack, and an adjustable mounting mechanism is arranged in the center of the lower-layer net rack; and the adjustable mounting mechanism comprises an adjusting motor, a driving bevel gear, a driven bevel gear, a transmission rod, a transmission bearing, a threaded rod, a first bearing seat, a threaded block and a mounting bolt. Due to the arrangement of the adjustable mounting mechanism, the positions of the bolts can be adjusted, the threaded blocks drive the mounting bolts to move freely by starting the adjusting motor, the distance between the three mounting bolts and the connecting base is adjusted, and the fixed mounting size of the mounting bolts is changed; the grate cooler isolator can be fixedly installed at air inlets of fans of different sizes, and the application performance of the grate cooler isolator is improved.

The utility model discloses a grate plate limit device of grate cooler relates to grate cooler technical field, including bottom plate, partition subassembly and limit subassembly, said bottom plate four corners are all equipped with electric telescopic pole, and electric telescopic pole top is fixed with support plate, one side of support plate is fixed with cross bar, and the cross bar is fixed with the spacing subassembly. A partition assembly is mounted on the outer side of the transverse rod, a limiting assembly is mounted on the outer side of the supporting plate and comprises a mounting base, a rotating motor, a rotating shaft, a first connecting plate, a second connecting plate and a limiting stop rod, the mounting base is fixedly connected with the supporting plate, and the rotating motor is mounted on one side of the mounting base; and a rotating shaft is mounted on one side of the rotating motor through a speed reducer. According to the grate plate limiting device of the grate cooler, the front limiting assembly and the rear limiting assembly are distributed and can conduct anti-falling limiting on the front side and the rear side of the grate plate on the bottom plate correspondingly, and the flexible cotton layers distributed outside the limiting stop rods at equal intervals can achieve the flexible protection effect.