Feeding equipment and process for calcium oxide production based on waste stone powder regeneration

Abstract

The invention relates to the field of production feeding equipment, in particular to calcium oxide production feeding equipment and process based on waste stone powder regeneration, comprising a roller kiln, the roller kiln comprises a kiln, the inner side of the lower part of the kiln is provided with a roller frame, and the two sides of the upper part of the roller frame are both provided with butt-joint ports; uniformly distributed fixing guide rods are mounted on the two sides in the roller frame, the inlet end of the roller kiln is connected with a feeding conveying frame, the outlet end of the roller kiln is connected with a discharging conveying frame, trays are arranged on the upper portions of the roller frame, the feeding conveying frame and the discharging conveying frame, and fixing columns are fixedly connected to the middles of the two ends of each tray; the marble waste serves as a preparation raw material, the cost input can be effectively reduced, the equipment cost input and the site cost input can be reduced by renting a ceramic tile baking kiln of an idle ceramic tile factory, meanwhile, an original roller kiln is slightly changed, and actual use is facilitated.

Description

Technical Field

[0001] The invention relates to the field of production and feeding equipment, and in particular to calcium oxide production and feeding equipment and a process based on the regeneration of waste stone powder. Background Art

[0002] In the field of calcium oxide production, production efficiency and cost control have always been the focus of industry attention. Traditional calcium oxide preparation processes and equipment have many drawbacks. On the one hand, in the raw material processing link, many companies rely on high-priced special raw materials, resulting in high production costs; on the other hand, equipment purchase and site leasing require huge amounts of capital. The transformation of large equipment such as kilns is not only complicated, but also seriously affects the subsequent normal use of the original equipment. In terms of material transportation and processing, the loading and unloading process lacks an efficient connection mechanism, and the positioning of the pallet during the recycling process is not accurate, resulting in low overall production efficiency. In the existing technology, it is impossible to ensure that the material is completely unloaded when the pallet is unloaded, and the residual material not only causes waste, but also affects the subsequent production process. In addition, the pallet is prone to deviation during the transportation process, making it difficult to achieve continuous and stable circulation, which seriously restricts the improvement of production efficiency. Therefore, we propose a calcium oxide production feeding equipment and process based on the regeneration of waste stone powder to solve the above-mentioned problems. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a calcium oxide production and feeding equipment and process based on the regeneration of waste stone powder.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a calcium oxide production and feeding equipment based on the regeneration of waste stone powder, including a roller kiln, the roller kiln includes a kiln, a roller frame is arranged on the inner side of the lower part of the kiln, and docking ports are opened on both sides of the upper part of the roller frame, and fixed guide rods evenly distributed are installed on both sides of the roller frame, the inlet end of the roller kiln is connected to a loading conveyor frame, and the outlet end of the roller kiln is connected to a unloading conveyor frame, and trays are arranged on the roller frame, the loading conveyor frame and the unloading conveyor frame, and the middle parts of both ends of the tray are fixedly connected to fixed columns, and the ends of the fixed columns are opened with bayonet sockets;

[0005] The kiln is used to calcine and decompose waste stone powder;

[0006] The loading and conveying rack is used to load and convey the pallet and the waste stone powder;

[0007] The unloading conveying rack is used to unload the calcium oxide produced on the tray;

[0008] The main parts of the loading conveyor frame and the unloading conveyor frame are mirror-imaged, and both the loading conveyor frame and the unloading conveyor frame include a top frame, a walking frame is installed at the bottom of the top frame, a plurality of guide rollers are arranged on the inner side of the upper part of the top frame, the ends of the outermost guide rollers are connected to motors, and docking blocks are fixedly connected to both sides of a part of the top frame close to the roller frame, the docking blocks are snapped into the docking port, the roller frame and the docking blocks are connected by fixing bolts, and the two ends of the outer periphery of the outermost guide roller are fixedly connected to fixing rings, the top of the fixing ring is fixedly connected to a connecting rod, the end of the connecting rod is slidably connected to a clamping column, and the clamping column corresponds to the clamping port at the end of the fixing column.

[0009] Preferably, a guide frame is installed at the inner end of the top frame, and a guide rail is fixedly connected to one end of the guide frame close to the top frame. The guide rail is slidably connected to a limit ring, and a protrusion is provided on one side of the guide rail.

[0010] Preferably, reserved grooves are provided on both sides inside the top frame, and the reserved grooves correspond to the connecting rods.

[0011] Preferably, a through slot is formed on one side of the guide frame away from the tray, and the clamping posts are arranged inside the through slot.

[0012] Preferably, both sides of the outermost guide roller are fixedly connected with driving bevel gears, the lower part of the driving bevel gear is meshingly connected with driven bevel gears, the middle part of the driven bevel gear is fixedly connected with a rotating rod, one side of the lower part of the outer periphery of the rotating rod is connected with a rotating shaft through a transmission assembly, and the rotating rod and the rotating shaft are rotatably connected inside the top frame.

[0013] Preferably, a fixed shell is fixedly connected to the lower part of both sides of the top frame, telescopic guide rods are penetrated on both sides of the top frame and the fixed shell, the telescopic guide rods are slidably connected to the top frame, a limiting groove is provided on one side of the outer circumference of the telescopic guide rod, the fixed shells are slidably connected to the limiting groove part, a return spring is sleeved on the inner side of the limit groove, the return spring is arranged on the inner side of the fixed shell, a tooth groove is provided in the middle part of the outer circumference of the telescopic guide rod on one side, an incomplete gear is fixedly connected to the lower part of the outer circumference of the rotating shaft, and one side of the incomplete gear is meshed with the tooth groove.

[0014] Preferably, push plates are passed through the ends of the telescopic guide rods, a fixed block is fixedly connected to the middle of the push plate on one side close to the top frame, a sliding column is fixedly connected to the bottom of the fixed block, a mounting frame is provided on the side of the push plate close to the top frame, the mounting frame is fixedly connected to one side of the top frame, a servo motor is installed on the top of the mounting frame, a cam is fixedly connected to the driving end of the servo motor, a guide groove is opened on the top of the cam, and the end of the sliding column is slidably connected to the inner side of the guide groove.

[0015] Preferably, a plurality of spring buckles are provided at the middle of the outer circumference of the fixing column, and a plurality of conical grooves are provided at the inner side of the guide frame.

[0016] Preferably, one side of the outer periphery of the clamping column is fixedly connected to a limiting ring, and a side of the limiting ring away from the clamping column is provided with a top spring, and the top spring is sleeved on the outer end of the connecting rod.

[0017] Preferably, a calcium oxide production and feeding process based on the regeneration of waste stone powder comprises the following steps:

[0018] S1. Raw material pretreatment

[0019] S1.1 Crushing and screening: Recover the stone powder and crushed stone waste left over from marble processing, and use a crusher to crush the crushed stone into stone powder to improve calcination efficiency;

[0020] S1.2, cleaning and removing impurities: rinse with water to remove surface dirt and impurities, dry or bake for later use;

[0021] S2. Kiln selection and preparation

[0022] S2.1. Kiln rental: Contact the tile processing company to select a suitable idle kiln and ensure that the maximum temperature of the kiln can reach above 1000℃;

[0023] S2.2, Equipment debugging: Check the sealing of the kiln, fuel system and temperature control instrument to ensure normal operation;

[0024] S2.3, Equipment modification: Connect the loading and unloading conveyor frame and the roller frame at the front and rear ends, align the docking block with the mounting hole on the docking interface, and then pass the fixing bolts through the mounting holes to connect and fix the roller frame with the loading and unloading conveyor frame;

[0025] S3. Kiln loading and calcination

[0026] S3.1. Loading method: After the loading and unloading conveying racks are installed, the waste stone powder to be calcined is introduced into the tray on the loading and unloading conveying rack. When loading, the waste stone powder is evenly spread in the tray to avoid stacking too thickly;

[0027] S3.2, the pallet can be transported to the roller frame through the feeding conveyor frame, the pallet is introduced into the inner side of the kiln through the roller frame, and the kiln is started to calcine the waste stone powder inside the pallet;

[0028] S3.3, Heating stage: slowly raise the temperature to 900-100°C at 50-100°C / hour to prevent thermal stress from causing cracking;

[0029] S3.4, Constant temperature calcination: Maintain the target temperature for 4-8 hours to ensure complete decomposition of calcium carbonate:

[0030] S3.5, Cooling treatment: Turn off the heat source and let the kiln cool naturally to below 200℃ before discharging the material to prevent calcium oxide from absorbing moisture when in contact with water;

[0031] S4. Post-processing and storage

[0032] S4.1. Discharging and screening: a material collecting box is placed at the end of the material discharging conveying rack, and then the prepared calcium oxide is poured into the material collecting box when the tray is turned over by the material discharging conveying rack;

[0033] S4.2. Sealed storage: Place calcium oxide in a moisture-proof sealed container and place it in a dry environment to avoid reaction with air moisture to form calcium hydroxide;

[0034] S5. Environmental protection and safety measures

[0035] S5.1. Waste gas treatment: Use a carbon dioxide collection device to collect decomposed carbon dioxide, reduce direct emissions, and retain carbon dioxide for reuse;

[0036] S5.2. Dust control: Bag dust collectors are used in the crushing and discharging stages, and operators wear N95 dust masks;

[0037] S5.3. Personal protection: Wear heat-insulating gloves, goggles, and fire-resistant clothing, and set up a ventilation system in the kiln area.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. When the present invention is actually used, people can connect the loading and unloading conveying frames with the front and rear ends of the roller frame, and the walking frame can facilitate people to move the loading and unloading conveying frames. When connecting, first move the loading and unloading conveying frames so that the docking block can be inserted into the docking interface, so that the docking block is aligned with the mounting holes on the docking interface, and then the fixing bolts are passed through the mounting holes, so as to realize the connection and fixation between the roller frame and the loading and unloading conveying frames. By using marble waste as the preparation raw material, the cost investment can be effectively reduced. By renting the tile baking kiln of an idle tile factory, the equipment cost investment and the site cost investment can be reduced. At the same time, the original roller kiln is modified very little, and only the loading and unloading conveying frames and the fixed guide rods need to be temporarily installed to carry out production work. The installation is quick, and the normal operation of the original roller kiln is not affected after disassembly.

[0040] 2. After calcination is completed, the tray will be guided to the unloading conveyor rack under the conveyance of the roller rack. When the tray is transported to the end of the unloading conveyor rack, the fixed columns on both sides of the tray will enter the inner side of the guide rack. At this time, the connecting rod is driven by the guide roller at the end, and the clamping column at the end of the connecting rod will be inserted into the clamping hole at the end of the fixed column. Then, when the guide roller rotates further, the fixed ring, connecting rod and clamping column will be used to drive the fixed column and the tray to flip, so that the calcium oxide inside the tray can be unloaded, so that the calcium oxide can be introduced into the aggregate box, which is conducive to actual use.

[0041] 3. The pallet can be guided and flipped through the through groove. During this process, when the fixed column is guided to the conical groove, the spring clip on the fixed column will directly pop out and snap into the inside of the conical groove to pause the pallet flipping process, so that the calcium oxide inside the pallet can be more thoroughly dumped into the aggregate box under the action of inertia. Then, under the continuous rotation of the guide roller, the spring clip will be pressed back into the fixed column under the action of the inclined groove on the edge of the conical groove, so that the pallet can continue to be flipped. Multiple groups of conical grooves can be used to pause the pallet at multiple points, thereby achieving complete dumping of the calcium oxide inside the pallet.

[0042] 4. When the calcium oxide inside the pallet is dumped, the connecting rod and the clamping column will further drive the pallet to flip over. When the pallet is completely flipped over with the opening facing downward, the telescopic guide rod will pop out to support the end of the pallet. At the same time, the limit ring on the clamping column will encounter the protrusion on the guide rail, which will compress the top spring and the clamping column will withdraw from the end of the fixed column. When the pallet is completely flipped over, the top of the pallet will contact the guide roller and the conveyor roller on the roller frame. At this time, under the action of friction, the pallet will be guided back to the loading conveyor frame, and the loading conveyor frame can flip the guided pallet back to the top of the loading conveyor frame, thereby completing the recycling of the pallet, which is beneficial to actual use.

[0043] 5. During the circulation of the pallet, the servo motor can drive the cam to rotate, and the guide groove on the cam can guide and constrain the fixed block, so that the push plate can always be close to the outer periphery of the cam. When the cam rotates, it will drive the push plate to move back and forth on the telescopic guide rod. In this process, the push plate can "clamp and center" both sides of the pallet on the telescopic guide rod, so that the pallet can be more accurate after being exported from the unloading conveyor rack and before being imported into the loading conveyor rack, which is conducive to the continuous and stable circulation of the pallet. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the structure of a calcium oxide production and feeding device and process based on the regeneration of waste stone powder according to the present invention;

[0045] Figure 2This is a schematic diagram of the structure after installation of a calcium oxide production and feeding equipment and process based on the recycling of waste stone powder according to the present invention;

[0046] Figure 3 It is a partial structural schematic diagram of a feeding device and process for producing calcium oxide based on the recycling of waste stone powder in the present invention at a feeding frame of the material unloading conveyor;

[0047] Figure 4 It is a partial structural schematic diagram of the top frame of a calcium oxide production and feeding equipment and process based on the recycling of waste stone powder according to the present invention;

[0048] Figure 5 It is a partial structural schematic diagram of the cam of a calcium oxide production and feeding device and process based on the recycling of waste stone powder according to the present invention;

[0049] Figure 6 It is a partial structural schematic diagram of an incomplete gear of a calcium oxide production and feeding device and process based on the recycling of waste stone powder according to the present invention;

[0050] Figure 7 It is a partial structural schematic diagram of the conical trough of a calcium oxide production and feeding device and process based on the regeneration of waste stone powder in the present invention;

[0051] Figure 8 It is a partial structural schematic diagram of the driving bevel gear and the driven bevel gear of a calcium oxide production and feeding equipment and process based on the recycling of waste stone powder in the present invention.

[0052] 1. Roller kiln; 101. Kiln; 102. Top frame; 103. Roller frame; 104. Pallet; 105. Docking port; 106. Traveling frame; 107. Fixed shell; 108. Connecting plate; 109. Docking block; 110. Guide roller; 111. Telescopic guide rod; 112. Fixed column; 113. Guide frame; 114. Clamping column; 115. Limiting ring; 116. Top spring; 117. Connecting rod; 118. Reserved groove; 119. Incomplete gear; 120. Tooth groove; 121. Fixed guide rod; 122. Push plate; 123. Sliding column; 124. Cam; 125. Guide groove; 126. Fixed block; 127. Servo motor; 128. Mounting frame; 129. Guide rail; 130. Through groove; 131. Fixed ring; 132. Active bevel gear; 133. Driven bevel gear; 134. Transmission assembly; 135. Rotating rod; 136. Rotating shaft; 137. Limiting groove; 138. Return spring; 139. Conical groove; 140. Spring buckle. DETAILED DESCRIPTION

[0053] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0054] like Figure 1-Figure 8 A calcium oxide production and feeding equipment based on the recycling of waste stone powder is shown, comprising a roller kiln 1, the roller kiln 1 comprising a kiln 101, a roller frame 103 is arranged on the inner side of the lower part of the kiln 101, docking ports 105 are provided on both sides of the upper part of the roller frame 103, and fixed guide rods 121 are evenly distributed and installed on both sides of the roller frame 103. A loading conveyor frame is connected to the inlet end of the roller kiln 1, and a unloading conveyor frame is connected to the outlet end of the roller kiln 1. Trays 104 are arranged on the upper parts of the roller frame 103, the loading conveyor frame and the unloading conveyor frame, and fixed columns 112 are fixedly connected to the middle parts of both ends of the tray 104, and bayonet holes are provided at the ends of the fixed columns 112;

[0055] The kiln 101 is used to calcine and decompose the waste stone powder;

[0056] The loading and conveying rack is used for loading and conveying the tray 104 and the waste stone powder;

[0057] The unloading conveyor rack is used to unload the calcium oxide produced on the tray 104;

[0058] The main parts of the loading and unloading conveyor frame are mirror-imaged. Both the loading and unloading conveyor frame include a top frame 102, a walking frame 106 is installed at the bottom of the top frame 102, a plurality of guide rollers 110 are arranged on the inner side of the upper part of the top frame 102, and the ends of the outermost guide rollers 110 are connected to motors. The top frame 102 is close to the roller frame 103 and both sides are fixedly connected with docking blocks 109. The docking blocks 109 are snapped into the inside of the docking port 105. The roller frame 103 and the docking blocks 109 are connected by fixing bolts. The outer ends of the outermost guide rollers 110 are fixedly connected. A fixing ring 131 is connected, the top of the fixing ring 131 is fixedly connected to a connecting rod 117, the end of the connecting rod 117 is slidably connected to a clamping column 114, the clamping column 114 corresponds to the clamping hole at the end of the fixing column 112, the outer side of the clamping column 114 is fixedly connected to a limiting ring 115, the side of the limiting ring 115 away from the clamping column 114 is provided with a top spring 116, the top spring 116 is sleeved on the outer end of the connecting rod 117, a plurality of spring buckles 140 are provided in the middle of the outer periphery of the fixing column 112, and a plurality of conical grooves 139 are opened on the inner side of the guide frame 113;

[0059] Furthermore, in the specific implementation, people can connect the loading and unloading conveying frames at the head and tail with the roller frame 103, and can conveniently move the loading and unloading conveying frames through the walking frame 106. When connecting, first move the loading and unloading conveying frames so that the docking block 109 can be inserted into the docking port 105, so that the docking block 109 is aligned with the mounting holes on the docking port 105, and then pass the fixing bolts through the mounting holes, so as to realize the connection and fixation of the roller frame 103 and the loading and unloading conveying frames. When the loading and unloading conveying frames are installed, people can introduce the waste stone powder to be calcined into the tray 1 on the loading conveying frame. 04, and then the tray 104 can be transported to the roller frame 103 through the loading conveyor frame, and the tray 104 can be introduced into the inside of the kiln 101 through the roller frame 103. By starting the kiln 101, the waste stone powder in the tray 104 can be calcined, so that the waste stone powder will be decomposed from calcium carbonate into calcium oxide and carbon dioxide. The carbon dioxide will be centrally extracted by the set extraction equipment, and the calcium oxide will remain in the tray 104. After the calcination is completed, the tray 104 will be transported by the roller frame 103 and guided to the unloading conveyor frame. When the tray 104 is transported to the end of the unloading conveyor frame, the fixed columns 1 on both sides of the tray 104 12 will enter the inner side of the guide frame 113. At this time, the connecting rod 117 is driven by the guide roller 110 at the end, and the clamping column 114 at the end of the connecting rod 117 will be clamped into the inner portion of the clamping hole at the end of the fixing column 112. Then, when the guide roller 110 rotates further, the fixing ring 131, the connecting rod 117 and the clamping column 114 will be used to drive the fixing column 112 and the tray 104 to flip over, so that the calcium oxide inside the tray 104 can be unloaded, so that the calcium oxide can be introduced into the aggregate box, which is beneficial to actual use. The tray 104 can be guided and flipped through the through groove 130. In this process, when the fixing column 112 is guided to the cone When the tray 104 is at the conical groove 139, the spring clip 140 on the fixed column 112 will directly pop out and be inserted into the conical groove 139, thereby pausing the flipping process of the tray 104, so that the calcium oxide inside the tray 104 can be more thoroughly dumped into the aggregate box under the action of inertia. Thereafter, under the continuous rotation of the guide roller 110, the spring clip 140 will be pressed back into the fixed column 112 under the action of the inclined groove on the edge of the conical groove 139, so that the tray 104 can continue to be flipped. Through multiple groups of conical grooves 139, the tray 104 can be paused at multiple points, thereby achieving complete dumping of the calcium oxide inside the tray 104.

[0060] Among them, the inner end of the top frame 102 is installed with a guide frame 113, and the end of the guide frame 113 close to the top frame 102 is fixedly connected with a guide rail 129, and the guide rail 129 is slidably connected to the limit ring 115. A protrusion is provided on one side of the guide rail 129, and reserved grooves 118 are provided on both sides of the top frame 102. The reserved grooves 118 correspond to the connecting rods 117, and a through groove 130 is provided on the side of the guide frame 113 away from the tray 104. 114 are arranged inside the through groove 130, both sides of the outermost guide roller 110 are fixedly connected with a driving bevel gear 132, the lower part of the driving bevel gear 132 is meshedly connected with a driven bevel gear 133, the middle part of the driven bevel gear 133 is fixedly connected with a rotating rod 135, one side of the lower part of the outer periphery of the rotating rod 135 is connected with a rotating shaft 136 through a transmission assembly 134, and the rotating rod 135 and the rotating shaft 136 are rotatably connected inside the top frame 102;

[0061] Furthermore, in a specific implementation, after the calcium oxide inside the tray 104 is dumped, the connecting rod 117 and the clamping column 114 will further drive the tray 104 to flip over, and the active bevel gear 132 at the end of the guide roller 110 will drive the driven bevel gear 133 engaged therewith to rotate, and the driven bevel gear 133 will drive the rotating rod 135 fixed thereto to rotate, and when the rotating rod 135 rotates, the transmission assembly 134 will be used to drive the rotating shaft 136 to rotate synchronously, and the rotating shaft 136 can drive the incomplete gear 119 to rotate, and when the incomplete gear 119 rotates, the tooth groove 120 engaged therewith will be used to drive the telescopic guide rod 111 to move, so that the reset spring 138 is compressed, and at this time the telescopic guide rod 111 is driven to contract, so that the tray 104 can be completely flipped over.

[0062] Among them, the lower parts of both sides of the top frame 102 are fixedly connected with fixed shells 107, and telescopic guide rods 111 are penetrated on both sides of the top frame 102 and the fixed shells 107. The telescopic guide rods 111 are slidably connected to the top frame 102. A limiting groove 137 is provided on one side of the outer circumference of the telescopic guide rod 111, and the fixed shells 107 are partially slidably connected to the limiting groove 137. A return spring 138 is sleeved on the inner side of the limiting groove 137, and the return spring 138 is arranged on the inner side of the fixed shell 107. A tooth groove 120 is provided on the middle part of the outer circumference of the telescopic guide rod 111 on one side, and an incomplete gear 119 is fixedly connected to the lower part of the outer circumference of the rotating shaft 136, and one side of the incomplete gear 119 is meshed with the tooth groove 120.

[0063] Furthermore, in the specific implementation, when the tray 104 is completely turned over and the opening faces downward, the incomplete gear 119 has rotated to the toothless part, so that the telescopic guide rod 111 loses its limit. Under the action of the return spring 138, the telescopic guide rod 111 will pop out and support the end of the tray 104. At the same time, the limit ring 115 on the clamping column 114 will encounter the protrusion on the guide rail 129, thereby compressing the top spring 116, and the clamping column 114 will withdraw from the end of the fixed column 112. When the tray 104 is completely turned over, the top of the tray 104 will contact the guide roller 110 and the conveying roller on the roller frame 103. At this time, under the action of friction, the tray 104 will be guided back to the loading conveyor frame, and the loading conveyor frame can flip the guided tray 104 back to the top of the loading conveyor frame, thereby completing the recycling of the tray 104, which is beneficial to actual use.

[0064] Among them, the ends of the telescopic guide rods 111 are penetrated by push plates 122, and the middle part of the push plates 122 close to the top frame 102 is fixedly connected with a fixed block 126, and the bottom of the fixed block 126 is fixedly connected with a slide column 123, and the side of the push plates 122 close to the top frame 102 is provided with a mounting frame 128, and the mounting frame 128 is fixedly connected to one side of the top frame 102, and a servo motor 127 is installed on the top of the mounting frame 128, and the driving end of the servo motor 127 is fixedly connected with a cam 124, and the top of the cam 124 is provided with a guide groove 125, and the end of the slide column 123 is slidably connected to the inner side of the guide groove 125;

[0065] Furthermore, in a specific implementation, during the circulation of the tray 104, the servo motor 127 can drive the cam 124 to rotate, and the guide groove 125 on the cam 124 can guide and constrain the fixed block 126, so that the push plate 122 can always be close to the outer periphery of the cam 124. When the cam 124 rotates, it will drive the push plate 122 to reciprocate on the telescopic guide rod 111. During this process, the push plate 122 can "clamp and center" both sides of the tray 104 on the telescopic guide rod 111, so that the tray 104 can be more precise after being exported from the unloading conveyor rack and before being imported into the loading conveyor rack, which is conducive to the continuous and stable circulation of the tray 104.

[0066] Among them, a calcium oxide production and feeding process based on the regeneration of waste stone powder includes the following operating steps:

[0067] S1. Raw material pretreatment

[0068] S1.1 Crushing and screening: Recover the stone powder and crushed stone waste left over from marble processing, and use a crusher to crush the crushed stone into stone powder to improve calcination efficiency;

[0069] S1.2, cleaning and removing impurities: rinse with water to remove surface dirt and impurities, dry or bake for later use;

[0070] S2. Kiln selection and preparation

[0071] S2.1, Lease kiln 101: Contact the tile processing company to select a suitable idle kiln 101, and ensure that the maximum temperature of the kiln 101 can reach above 1000℃;

[0072] S2.2, Equipment debugging: Check the sealing of kiln 101, fuel system natural gas / electric heating and temperature control instruments to ensure normal operation;

[0073] S2.3, equipment modification: connect the loading and unloading conveyor frame and the roller frame 103 at the head and tail, align the docking block 109 with the mounting hole on the docking port 105, and then pass the fixing bolts through the mounting holes to achieve the connection and fixation of the roller frame 103 with the loading and unloading conveyor frame;

[0074] S3. Kiln loading and calcination

[0075] S3.1, loading method: after the loading and unloading conveying racks are installed, the waste stone powder to be calcined is introduced into the tray 104 on the loading and unloading conveying rack. When loading, the waste stone powder is evenly spread in the tray 104 to avoid stacking too thickly with a thickness of ≤15cm;

[0076] S3.2, the tray 104 can be transported to the roller frame 103 through the loading conveyor frame, the tray 104 is introduced into the inner side of the kiln 101 through the roller frame 103, and the kiln 101 is started to calcine the waste stone powder inside the tray 104;

[0077] S3.3, heating stage: slowly raise the temperature to 900-1000℃ at 100℃ / hour to prevent thermal stress from causing cracking;

[0078] S3.4, Constant temperature calcination: Maintain the target temperature for 4 hours to ensure complete decomposition of calcium carbonate:

[0079] S3.5, Cooling treatment: Turn off the heat source and let the kiln 101 cool naturally to below 200°C before discharging the material to prevent the calcium oxide from absorbing moisture when in contact with water;

[0080] S4. Post-processing and storage

[0081] S4.1. Discharge screening: a material collection box is placed at the end of the material discharging conveyor frame, and then the prepared calcium oxide is poured into the material collection box when the tray 104 is turned over by the material discharging conveyor frame;

[0082] S4.2. Sealed storage: Place calcium oxide in a moisture-proof sealed container and place it in a dry environment to avoid reaction with air moisture to form calcium hydroxide;

[0083] S5. Environmental protection and safety measures

[0084] S5.1. Waste gas treatment: Use a carbon dioxide collection device to collect decomposed carbon dioxide, reduce direct emissions, and retain carbon dioxide for reuse;

[0085] S5.2. Dust control: Bag dust collectors are used in the crushing and discharging stages, and operators wear N95 dust masks;

[0086] S5.3. Personal protection: Wear heat-insulating gloves, goggles, and fire-resistant clothing. A ventilation system shall be installed in the kiln 101 area.

[0087] Working principle:

[0088] In actual use, people can connect the loading and unloading conveying frames at the head and tail with the roller frame 103, and the walking frame 106 can facilitate people to move the loading and unloading conveying frames. When connecting, first move the loading and unloading conveying frames so that the docking block 109 can be inserted into the docking port 105, so that the docking block 109 is aligned with the mounting holes on the docking port 105, and then the fixing bolts pass through the mounting holes, so as to realize the connection and fixation of the roller frame 103 and the loading and unloading conveying frames. When the loading and unloading conveying frames are installed, people can introduce the waste stone powder to be calcined into the tray 104 on the loading conveying frame, and then the tray 104 can be transported to the roller frame 103 through the loading conveying frame, and the tray 104 can be transported to the roller frame 103 through the roller frame 103. 4 is introduced into the inner side of the kiln 101, and the waste stone powder in the tray 104 can be calcined by starting the kiln 101, so that the waste stone powder will be decomposed from calcium carbonate into calcium oxide and carbon dioxide. The carbon dioxide will be centrally extracted by the set extraction equipment, and the calcium oxide will remain in the tray 104. After the calcination is completed, the tray 104 will be transported by the roller frame 103 and guided to the unloading conveying frame. When the tray 104 is transported to the end of the unloading conveying frame, the fixed columns 112 on both sides of the tray 104 will enter the inner side of the guide frame 113. At this time, the connecting rod 117 is driven by the guide roller 110 at the end, and the clamping column 114 at the end of the connecting rod 117 will be clamped into the clamping hole at the end of the fixed column 112. Then, when the guide roller 110 rotates further, the fixed ring 131. The connecting rod 117 and the clamping column 114 drive the fixed column 112 and the tray 104 to flip over, so that the calcium oxide inside the tray 104 can be unloaded, so that the calcium oxide can be introduced into the collection box, which is beneficial to practical use. The tray 104 can be guided and flipped through the through groove 130. During this process, when the fixed column 112 is guided to the conical groove 139, the spring clip 140 on the fixed column 112 will directly pop out and snap into the conical groove 139, so as to pause the flipping process of the tray 104, so that the calcium oxide inside the tray 104 can be more thoroughly dumped into the collection box under the action of inertia. After that, under the continuous rotation of the guide roller 110, the spring clip 140 will be in the inclined groove at the edge of the conical groove 139 The tray 104 is pressed back into the fixed column 112 by the action of the plurality of conical grooves 139, so that the tray 104 can be further turned over. The tray 104 can be paused at multiple points through the plurality of groups of conical grooves 139, so that the calcium oxide inside the tray 104 can be completely unloaded. When the calcium oxide inside the tray 104 is unloaded, the connecting rod 117 and the clamping column 114 will further drive the tray 104 to turn over, and the active bevel gear 132 at the end of the guide roller 110 will drive the driven bevel gear 133 meshed with it to rotate, and the driven bevel gear 133 will drive the rotating rod 135 fixed thereto to rotate, and when the rotating rod 135 rotates, the transmission assembly 134 will be used to drive the rotating shaft 136 to rotate synchronously, and the rotating shaft 136 can drive the incomplete gear 119 to rotate.When the incomplete gear 119 rotates, it will use the tooth groove 120 engaged with it to drive the telescopic guide rod 111 to move, so that the return spring 138 is compressed. At this time, the telescopic guide rod 111 is driven to shrink, so that the tray 104 can be completely turned over. When the tray 104 is completely turned over and the opening is facing downward, the incomplete gear 119 has rotated to the toothless part, so that the telescopic guide rod 111 loses its limit. Under the action of the return spring 138, the telescopic guide rod 111 will pop out and support the end of the tray 104. At the same time, the limit ring 115 on the clamping column 114 will encounter the protrusion on the guide rail 129, so that the top spring 116 will be compressed, and the clamping column 114 will withdraw from the end of the fixed column 112. When the tray 104 is completely turned over, the top of the tray 104 will contact the guide roller 110 and the conveying roller on the roller frame 103. At this time, under the action of friction, the tray 104 will be guided back When the tray 104 reaches the loading conveyor, the loading conveyor can flip the tray 104 that has been guided back, so that it returns to the top of the loading conveyor, thereby completing the recycling of the tray 104, which is beneficial to actual use. During the recycling of the tray 104, the servo motor 127 can drive the cam 124 to rotate, and the guide groove 125 on the cam 124 can guide and constrain the fixed block 126, so that the push plate 122 can always be close to the outer periphery of the cam 124. When the cam 124 rotates, it will drive the push plate 122 to reciprocate on the telescopic guide rod 111. In this process, the push plate 122 can "clamp and center" both sides of the tray 104 on the telescopic guide rod 111, so that the tray 104 can be more accurate after being led out of the unloading conveyor and before being introduced into the loading conveyor, which is beneficial to the continuous and stable circulation of the tray 104.

[0089] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A calcium oxide production and feeding device based on the recycling of waste stone powder, comprising a roller kiln (1), characterized in that: The roller kiln (1) comprises a kiln (101), a roller frame (103) is arranged on the inner side of the lower part of the kiln (101), docking ports (105) are provided on both sides of the upper part of the roller frame (103), fixed guide rods (121) are evenly distributed and installed on both sides of the roller frame (103), the inlet end of the roller kiln (1) is connected to a loading conveyor frame, and the outlet end of the roller kiln (1) is connected to a unloading conveyor frame, trays (104) are arranged on the upper parts of the roller frame (103), the loading conveyor frame and the unloading conveyor frame, and fixed columns (112) are fixedly connected to the middle parts of both ends of the tray (104), and the ends of the fixed columns (112) are provided with bayonet holes; The kiln (101) is used to calcine and decompose waste stone powder; The loading and conveying rack is used to load and convey the tray (104) and the waste stone powder; The unloading conveyor frame is used to unload the calcium oxide produced on the tray (104); The main parts of the loading conveyor frame and the unloading conveyor frame are arranged in a mirror image. The loading conveyor frame and the unloading conveyor frame both include a top frame (102), a walking frame (106) is installed at the bottom of the top frame (102), a plurality of guide rollers (110) are arranged on the inner side of the upper part of the top frame (102), and the ends of the outermost guide rollers (110) are connected to motors. A portion of the top frame (102) close to the roller frame (103) is fixedly connected to docking blocks (109) on both sides. The blocks (109) are all engaged in the docking port (105), the roller frame (103) and the docking block (109) are connected by fixing bolts, the outer ends of the outermost guide roller (110) are fixedly connected with fixing rings (131), the tops of the fixing rings (131) are fixedly connected with connecting rods (117), the ends of the connecting rods (117) are slidably connected with clamping columns (114), and the clamping columns (114) correspond to the clamping holes at the ends of the fixing columns (112).

2. The calcium oxide production and feeding equipment based on the regeneration of waste stone powder according to claim 1 is characterized by: A guide frame (113) is installed at the inner end of the top frame (102), and one end of the guide frame (113) close to the top frame (102) is fixedly connected to a guide rail (129), and the guide rail (129) is slidably connected to the limit ring (115), and a protrusion is provided on one side of the guide rail (129).

3. The calcium oxide production and feeding equipment based on the regeneration of waste stone powder according to claim 1 is characterized by: Reserved grooves (118) are provided on both sides of the top frame (102), and the reserved grooves (118) correspond to the connecting rods (117).

4. The calcium oxide production and feeding equipment based on the recycling of waste stone powder according to claim 2 is characterized by: A through slot (130) is provided on one side of the guide frame (113) away from the tray (104), and the clamping columns (114) are arranged inside the through slot (130).

5. The calcium oxide production and feeding equipment based on the regeneration of waste stone powder according to claim 1 is characterized by: Both sides of the outermost guide roller (110) are fixedly connected to driving bevel gears (132), the lower part of the driving bevel gear (132) is meshingly connected to a driven bevel gear (133), the middle part of the driven bevel gear (133) is fixedly connected to a rotating rod (135), one side of the lower part of the outer periphery of the rotating rod (135) is connected to a rotating shaft (136) via a transmission assembly (134), and the rotating rod (135) and the rotating shaft (136) are both rotatably connected inside the top frame (102).

6. The calcium oxide production and feeding equipment based on the recycling of waste stone powder according to claim 5 is characterized by: The lower parts of both sides of the top frame (102) are fixedly connected with fixed shells (107), and telescopic guide rods (111) are passed through both sides of the top frame (102) and the fixed shell (107), and the telescopic guide rods (111) are slidably connected to the top frame (102). A limiting groove (137) is provided on one side of the outer circumference of the telescopic guide rod (111), and the fixed shell (107) is slidably connected to a part of the limiting groove (137). A return spring (138) is sleeved on the inner side of the limiting groove (137), and the return spring (138) is arranged on the inner side of the fixed shell (107). A tooth groove (120) is provided on the middle part of the outer circumference of one side of the telescopic guide rod (111), and an incomplete gear (119) is fixedly connected to the lower part of the outer circumference of the rotating shaft (136), and one side of the incomplete gear (119) is meshedly connected to the tooth groove (120).

7. The calcium oxide production and feeding equipment based on the recycling of waste stone powder according to claim 6 is characterized by: The end of the telescopic guide rod (111) is penetrated by a push plate (122), the middle part of the push plate (122) close to the top frame (102) is fixedly connected to a fixed block (126), the bottom of the fixed block (126) is fixedly connected to a slide column (123), the side of the push plate (122) close to the top frame (102) is provided with a mounting frame (128), the mounting frame (128) is fixedly connected to one side of the top frame (102), a servo motor (127) is installed on the top of the mounting frame (128), the driving end of the servo motor (127) is fixedly connected to a cam (124), the top of the cam (124) is provided with a guide groove (125), and the end of the slide column (123) is slidably connected to the inner side of the guide groove (125).

8. The calcium oxide production and feeding equipment based on the recycling of waste stone powder according to claim 2 is characterized by: A plurality of spring buckles (140) are provided at the middle of the outer circumference of the fixing column (112), and a plurality of conical grooves (139) are provided at the inner side of the guide frame (113).

9. The calcium oxide production and feeding equipment based on the recycling of waste stone powder according to claim 1 is characterized by: The outer side of the clamping column (114) is fixedly connected to a limit ring (115), and the side of the limit ring (115) away from the clamping column (114) is provided with a top spring (116), and the top spring (116) is sleeved on the outer end of the connecting rod (117).

10. A calcium oxide production and feeding process based on the recycling of waste stone powder, applied to a calcium oxide production and feeding device based on the recycling of waste stone powder as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1. Raw material pretreatment S1.1 Crushing and screening: Recover the stone powder and crushed stone waste left over from marble processing, and use a crusher to crush the crushed stone into stone powder to improve calcination efficiency; S1.2, cleaning and removing impurities: rinse with water to remove surface dirt and impurities, dry or bake for later use; S2. Kiln selection and preparation S2.

1. Lease kiln (101): Contact the tile processing company to select a suitable idle kiln (101) and ensure that the maximum temperature of the kiln (101) can reach above 1000°C; S2.2, Equipment debugging: Check the sealing of the kiln (101), the fuel system (natural gas / electric heating) and the temperature control instrument to ensure normal operation; S2.3, equipment modification: connect the front and rear ends of the loading and unloading conveyor frame and the roller frame (103), align the docking block (109) with the mounting hole on the docking port (105), and then pass the fixing bolts through the mounting holes to achieve the connection and fixation of the roller frame (103) and the loading and unloading conveyor frame; S3. Kiln loading and calcination S3.

1. Loading method: After the loading conveyor rack and the unloading conveyor rack are installed, the waste stone powder to be calcined is introduced into the tray (104) on the loading conveyor rack. When loading, the waste stone powder is evenly spread in the tray (104) to avoid excessive stacking (thickness ≤ 15 cm); S3.2, the tray (104) can then be transported to the roller frame (103) through the loading conveyor frame, the tray (104) is introduced into the inner side of the kiln (101) through the roller frame (103), and the kiln (101) is started to calcine the waste stone powder inside the tray (104); S3.3, Heating stage: slowly raise the temperature to 900-100°C at 50-100°C / hour to prevent thermal stress from causing cracking; S3.4, Constant temperature calcination: Maintain the target temperature for 4-8 hours to ensure complete decomposition of calcium carbonate: S3.5, cooling treatment: turn off the heat source, and allow the kiln (101) to cool naturally to below 200°C before discharging the material, to prevent the calcium oxide from absorbing moisture when in contact with water; S4. Post-processing and storage S4.1, material discharging and screening: a material collecting box is placed at the end of the material discharging conveying frame, and then the prepared calcium oxide is poured into the material collecting box when the tray (104) is turned over by the material discharging conveying frame; S4.

2. Sealed storage: Place calcium oxide in a moisture-proof sealed container and place it in a dry environment to avoid reaction with air moisture to form calcium hydroxide; S5. Environmental protection and safety measures S5.

1. Waste gas treatment: Use a carbon dioxide collection device to collect decomposed carbon dioxide, reduce direct emissions, and retain carbon dioxide for reuse; S5.

2. Dust control: Bag dust collectors are used in the crushing and discharging stages, and operators wear N95 dust masks; S5.

3. Personal protection: Wear heat-insulating gloves, goggles, and fire-resistant clothing. A ventilation system should be installed in the kiln (101) area.

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