Double-layer unfired ceramsite preparation equipment and process

Abstract

The invention belongs to the technical field of aggregate preparation, and particularly relates to double-layer non-sintered ceramsite preparation equipment and a process, the double-layer non-sintered ceramsite preparation equipment comprises a mixing tank and a controller fixedly mounted on the outer side wall of the mixing tank, a feeding hopper is fixedly inserted into the top of the mixing tank, a discharging pipe is fixedly inserted into the bottom of the mixing tank, and a discharging valve is mounted in the discharging pipe; the mixing tank further comprises a plurality of circular rings which are movably arranged in the mixing tank. The device not only can assist in improving the mixing and stirring efficiency, but also can automatically judge whether the mixture is uniformly mixed or not based on the uniformity of the mixture in the stirring and mixing process, so that time waste can be reduced, the unfired ceramic preparation efficiency can be improved, and uniform mixing of raw materials can be ensured as much as possible; meanwhile, the non-firing process is adopted, industrial solid wastes such as stone tail mud and steel slag powder are consumed, large-scale calcining equipment is not needed, and the method has the advantages of energy conservation, low carbon and other environment-friendly effects.

Description

Technical Field

[0001] The invention belongs to the technical field of aggregate preparation, and in particular relates to double-layer unfired ceramsite preparation equipment and process. Background Art

[0002] The comprehensive utilization of stone tailings is an important way to save land and resources. It is an important measure to develop a circular economy and build an environmentally friendly and resource-saving society. By reusing stone tailings, the pollution of the environment by stone tailings can also be reduced.

[0003] At present, the urban technologies and products for resource utilization of stone tailings are mainly sintered bricks, artificial stones and other building materials. However, the large volume of stone tailings, the complex sintering process and the high energy consumption of the sintering process have seriously affected the promotion of stone tailings. Secondly, when using stone tailings to prepare expanded clay, the raw materials need to be evenly mixed through mixing equipment. However, due to the large differences in the composition of stone tailings and poor fluidity, it takes a long time to evenly mix the stone tailings with other aggregates (such as steel slag powder, etc.) (taking 100kg of mixed materials as an example, it generally takes more than 4 hours of stirring), which affects the overall preparation efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a double-layer unfired ceramsite preparation device and process in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: a double-layer unfired ceramsite preparation device, comprising a mixing tank and a controller fixedly installed on the outer side wall of the mixing tank, a feed hopper fixedly plugged into the top of the mixing tank, a discharge pipe fixedly plugged into the bottom of the mixing tank, and a discharge valve installed inside the discharge pipe, and also comprising:

[0006] A plurality of circular rings are movably arranged inside the mixing tank, and the outer diameter of the circular rings matches the inner diameter of the mixing tank. The inner wall of each circular ring is integrally formed with a plurality of bosses, and a detection cavity is provided inside each boss, and two cavity walls opposite to the detection cavity are respectively provided with a feed hole and a discharge hole;

[0007] A plurality of detection units are installed in corresponding detection chambers, and each detection unit is electrically connected to the controller;

[0008] A stirring unit is installed on the top of the mixing tank, and a stirring end of the stirring unit is located inside the mixing tank, each of the rings is connected to the stirring unit, and the stirring unit is electrically connected to the controller;

[0009] A temperature control unit is installed on the outer wall of the mixing tank, and the temperature control unit is electrically connected to the controller;

[0010] The trigger unit is installed on the side wall of the temperature control unit, and the plurality of detection units are electrically connected to the trigger unit through a controller.

[0011] Preferably, each of the detection units includes a fixed bar fixedly installed inside the detection chamber, the fixed bar is arranged on a side of the detection chamber near the discharge hole, a movable plate is slidably provided inside the detection chamber, and the movable plate is arranged on a side of the detection chamber near the feed hole, a plurality of discharge holes are opened on the side wall of the movable plate, an insulating cylinder is fixedly installed on the side wall of the movable plate near the fixed bar, and a fixed conductive ring is fixedly installed on the end of the insulating cylinder away from the movable plate, an insulating rod is fixedly installed on the side wall of the fixed bar near the movable plate, and the insulating rod is coaxial with the fixed conductive ring, a movable conductive ring is inlaid on the rod wall of the insulating rod, and the outer diameter of the movable conductive ring is the same as the inner diameter of the fixed conductive ring, an electromagnetic switch is installed inside the fixed bar, the movable conductive ring and the fixed conductive ring are electrically connected to the electromagnetic switch, a conductive component is installed on the mixing tank, the controller is electrically connected to the electromagnetic switch through the conductive component, and a spring is fixedly provided between the insulating cylinder and the fixed bar.

[0012] Preferably, the stirring unit includes a stirring rod rotatably arranged on the top of the mixing tank, a plurality of stirring blades are fixedly sleeved on the rod wall of the stirring rod, a plurality of connecting plates are fixedly inserted on the rod wall of the stirring rod, and a connecting column is fixedly provided between the bottom of each connecting plate and the circular ring on the same side, each of the stirring blades and the connecting plate, connecting column, circular ring and boss are staggered with each other, a driving motor is fixedly installed on the top of the mixing tank, and the output shaft of the driving motor is transmission-connected to the stirring rod.

[0013] Preferably, the temperature control unit includes a heat insulation cover fixedly sleeved on the outer wall of the mixing tank, a heat insulation cover is fixedly installed on the outer wall of the heat insulation cover, and an electric heater is fixedly installed inside the heat insulation cover, a mounting tube is fixedly installed on the outer wall of the heat insulation cover, and a fan is installed inside the mounting tube, the side wall of the heat insulation cover is provided with an air inlet hole connected to the mounting tube, the side wall of the heat insulation cover is provided with a ventilation hole connected to the heat insulation cover, the side wall of the heat insulation cover away from the heat insulation cover is provided with an air outlet hole, and a detection tube connected to the air outlet hole is fixedly installed on the outer wall of the heat insulation cover, a first temperature detector is installed inside the detection tube, and the first temperature detector, the fan and the electric heater are all electrically connected to the controller.

[0014] Preferably, the trigger unit includes a branch hole opened on the side wall of the heat preservation cover, and the branch hole is arranged above the air outlet, the outer wall of the heat preservation cover is fixedly installed with a branch pipe connected with the branch hole, the upper tube wall of the branch pipe is fixedly plugged with a second temperature detector, and a thermal conductive cover is sleeved on the outer side of the detection end of the second temperature detector, the thermal conductive cover is fixedly connected to the inner wall of the branch pipe, a normally closed solenoid valve is installed inside the branch hole, and a normally open solenoid valve is installed inside the air outlet, and the normally closed solenoid valve, the normally open solenoid valve and the second temperature detector are all electrically connected to the controller.

[0015] Preferably, the conductive component includes a circular cover fixedly mounted on the inner top of the mixing tank, and the circular cover is rotatably connected to the stirring rod, a rotating disk is fixedly sleeved on one end of the rod wall of the stirring rod located inside the circular cover, a plurality of insulating covers are fixedly mounted on the end surface of the rotating disk, and two electrode columns are slidably connected to the top of each insulating cover, an insulating elastic pad is fixedly mounted on the end surface of the rotating disk located inside the insulating cover, and two electrode columns are jointly mounted on the top of the insulating elastic pad on the same side, an insulating ring is fixedly mounted on the inner top of the mixing tank, a plurality of power supply rings are fixedly inserted on the bottom of the insulating ring, and the top of each electrode column is in sliding contact with the bottom of the power supply ring on the same side, and the controller is electrically connected to the corresponding electromagnetic switch through the power supply ring and the electrode column.

[0016] A preparation process for double-layer unfired ceramsite preparation equipment, the process comprising the following steps:

[0017] S1. Put stone tailings, cement and auxiliary materials into the mixing tank through the feed hopper, with 70%-85% stone tailings, 8%-15% cement and 5%-15% auxiliary materials, and start the controller;

[0018] S2, the controller controls the mixing unit, the temperature control unit, and multiple detection units to work synchronously to mix the stone tailings, cement, and auxiliary materials;

[0019] S3, after the mixing unit mixes the mixture, the controller controls the trigger unit to work according to the electrical signal output by the detection unit, and after the controller receives the electrical signal output by the trigger unit, the controller prompts the personnel through its own voice module that the mixing of the mixture is completed;

[0020] S4, transferring the mixed material obtained in step S3 and putting it into a disc granulator for pelletization;

[0021] S5, transferring the ceramsite obtained in step S4 and conveying it to a coating machine for shell making;

[0022] S6, the ceramsite shelled in step S5 is transferred out and placed in a resting bin for natural resting for 8 hours to 16 hours, and then the ceramsite is autoclaved for 8 hours, and the temperature of the steam is required to be between 150° C. and 200° C., so as to obtain double-layer unfired ceramsite.

[0023] Preferably, the auxiliary material is one or more of steel slag powder, foundry ash, and fly ash.

[0024] Preferably, the angle of the ball-forming disk of the disk granulator in step S4 is controlled at 30°-60°, and the rotation speed is 10 r / min-12 r / min.

[0025] Preferably, the water content of the stone tailings is less than 30%, and the fineness of the stone tailings and auxiliary materials is not more than 10% on a 200-mesh sieve.

[0026] Compared with the existing technology, the advantages of a double-layer unfired ceramsite preparation equipment and process are:

[0027] 1. Through the cooperation of the mixing tank, controller, feed hopper, discharge pipe, discharge valve and stirring unit, stone tailings, cement, steel slag powder or casting ash or fly ash can be quickly stirred and mixed. Through the cooperation of the ring and detection unit, the uniformity of the mixture can be monitored online during the stirring process, and the mixture exchange between the center and the outer edge of the mixing tank can be assisted to improve the mixing efficiency.

[0028] 2. Through the set temperature control unit, the mixture can be mixed at a suitable temperature during the mixing process to avoid the temperature affecting the mixing effect of the mixture. Secondly, in conjunction with the set trigger unit, the controller can automatically remind personnel to mix the mixture evenly based on the detection results of the detection unit, thereby ensuring that the mixture is evenly mixed and reducing time waste.

[0029] 3. Through the set steps S1 to S6, the stirred and mixed mixture can be granulated, shelled and solidified to form a double-layer unfired expanded clay. The early treatment of stone tailings is simple, the preparation process is simple, and no large-scale calcining equipment is required. A large amount of industrial solid waste such as stone tailings, steel slag powder, and fly ash can be consumed. The unfired process has the advantages of energy saving and low carbon and other environmental protection effects, which is conducive to large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a double-layer unfired ceramsite preparation device provided by the present invention;

[0031] Figure 2 It is a schematic cross-sectional structure diagram of a double-layer unfired ceramsite preparation device provided by the present invention;

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure of a ring of a double-layer unfired ceramsite preparation device provided by the present invention;

[0033] Figure 4 It is a schematic diagram of the internal structure of a double-layer unfired ceramsite preparation device provided by the present invention from a top view;

[0034] Figure 5 The present invention provides a double-layer unfired ceramsite preparation device Figure 4 A magnified view of the structure of part A;

[0035] Figure 6 The present invention provides a double-layer unfired ceramsite preparation device Figure 2 A magnified view of the structure of part B;

[0036] Figure 7 The present invention provides a double-layer unfired ceramsite preparation device Figure 2 A magnified view of the structure of part C.

[0037] In the figure: 1 mixing tank, 2 controller, 3 feed hopper, 4 discharge pipe, 5 discharge valve, 6 ring, 7 boss, 8 detection chamber, 9 feed hole, 10 discharge hole, 11 detection unit, 111 fixed bar, 112 movable plate, 113 discharge hole, 114 insulating cylinder, 115 fixed conductive ring, 116 insulating rod, 117 movable conductive ring, 118 electromagnetic switch, 119 spring, 12 stirring unit, 121 stirring rod, 122 stirring blade, 123 connecting plate, 124 connecting column, 125 driving motor, 13 temperature control unit, 131 insulation cover, 132 heat insulation cover, 133 electric heater, 134 installation pipe, 135 fan, 136 air inlet, 137 ventilation hole, 138 air outlet, 139 detection tube, 14 trigger unit, 141 branch hole, 142 branch pipe, 143 second temperature detector, 144 thermal conductive cover, 145 normally closed solenoid valve, 146 normally open solenoid valve, 15 conductive component, 151 round cover, 152 rotating disk, 153 insulating cover, 154 electrode column, 155 insulating elastic pad, 156 insulating ring, 157 power supply ring, 16 first temperature detector. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] like Figure 1-Figure 7As shown, a double-layer unfired ceramsite preparation equipment includes a mixing tank 1 and a controller 2 fixedly installed on the outer wall of the mixing tank 1, a feed hopper 3 is fixedly inserted at the top of the mixing tank 1, a discharge pipe 4 is fixedly inserted at the bottom of the mixing tank 1, and a discharge valve 5 is installed inside the discharge pipe 4, and also includes: a plurality of rings 6, the plurality of rings 6 are movably arranged inside the mixing tank 1, and the outer diameter of the rings 6 matches the inner diameter of the mixing tank 1, the inner wall of each ring 6 is integrally formed with a plurality of bosses 7, a detection cavity 8 is opened inside each boss 7, and a feed hole 9 and a discharge hole 10 are respectively opened on two opposite cavity walls of the detection cavity 8.

[0040] A plurality of detection units 11 are installed inside the corresponding detection chamber 8, and each detection unit 11 is electrically connected to the controller 2. Each detection unit 11 includes a fixed bar 111 fixedly installed inside the detection chamber 8, and the fixed bar 111 is arranged on a side of the detection chamber 8 close to the discharge hole 10. A movable plate 112 is slidably provided inside the detection chamber 8, and the movable plate 112 is arranged on a side of the detection chamber 8 close to the feed hole 9. A plurality of discharge holes 113 are provided on the side wall of the movable plate 112. An insulating cylinder 114 is fixedly installed on the side wall of the movable plate 112 close to the fixed bar 111, and the interior of the insulating cylinder 114 is away from the movable plate 112. A fixed conductive ring 115 is fixedly installed at one end, an insulating rod 116 is fixedly installed on the side wall of the fixed bar 111 close to the movable plate 112, and the insulating rod 116 is coaxial with the fixed conductive ring 115, a movable conductive ring 117 is sleeved on the rod wall of the insulating rod 116, and the outer diameter of the movable conductive ring 117 is the same as the inner diameter of the fixed conductive ring 115, an electromagnetic switch 118 is installed inside the fixed bar 111, and the movable conductive ring 117 and the fixed conductive ring 115 are electrically connected to the electromagnetic switch 118, wherein a flexible sealing sleeve is provided between the fixed bar 111 and the movable plate 112, and the flexible sealing sleeve can prevent the mixture from entering the insulating cylinder 114.

[0041] The mixing tank 1 is equipped with a conductive component 15, and the controller 2 is electrically connected to the electromagnetic switch 118 through the conductive component 15. A spring 119 is fixedly arranged between the insulating cylinder 114 and the fixing bar 111. The conductive component 15 includes a round cover 151 fixedly arranged on the top of the mixing tank 1, and the round cover 151 is rotatably connected to the stirring rod 121. The rod wall of the stirring rod 121 is located at one end of the round cover 151 and is fixedly sleeved with a rotating disk 152. A plurality of insulating covers 153 are fixedly arranged on the end surface of the rotating disk 152, and the top of each insulating cover 153 is slidably connected to two electrode columns 154. An insulating elastic pad 155 is fixedly arranged at a position where the end surface of the rotating disk 152 is located inside the insulating cover 153, and the two electrode columns 154 are installed together. An insulating ring 156 is fixedly installed on the top of the insulating elastic pad 155 on the same side and the inner top of the mixing tank 1. A plurality of power supply rings 157 are fixedly inserted at the bottom of the insulating ring 156, and the top of each electrode column 154 is in sliding contact with the bottom of the power supply ring 157 on the same side. The controller 2 is electrically connected to the corresponding electromagnetic switch 118 through the power supply ring 157 and the electrode column 154. The electromagnetic switches 118 inside the same circular ring 6 are connected in series, and are connected in series with the controller 2 through the corresponding two electrode columns 154 and the power supply ring 157. Therefore, when all movable conductive rings 117 and fixed conductive rings 115 in the same circular ring 6 are in contact, the controller 2 will synchronously receive the closing electrical signals of all the electromagnetic switches 118 in the circular ring 6, thereby reducing wiring.

[0042] The stirring unit 12 is installed on the top of the mixing tank 1, and the stirring end of the stirring unit 12 is inside the mixing tank 1, each ring 6 is connected to the stirring unit 12, and the stirring unit 12 is electrically connected to the controller 2. The stirring unit 12 includes a stirring rod 121 rotatably arranged on the top of the mixing tank 1, and the rod wall of the stirring rod 121 is fixedly sleeved with a plurality of stirring blades 122, and the rod wall of the stirring rod 121 is fixedly plugged with a plurality of connecting plates 123, and the bottom of each connecting plate 123 is fixedly provided with a connecting column 124 between the same side ring 6, and each stirring blade 122 is staggered with the connecting plate 123, the connecting column 124, the ring 6 and the boss 7. A driving motor 125 is fixedly installed on the top of the mixing tank 1, and the output shaft of the driving motor 125 is transmission-connected to the stirring rod 121. When the stirring blade 122 rotates, the mixture can be quickly dispersed and mixed.

[0043] The temperature control unit 13 is installed on the outer wall of the mixing tank 1, and the temperature control unit 13 is electrically connected to the controller 2. The temperature control unit 13 includes a heat-insulating cover 131 fixedly sleeved on the outer wall of the mixing tank 1, a heat-insulating cover 132 is fixedly installed on the outer wall of the heat-insulating cover 131, and an electric heater 133 is fixedly installed inside the heat-insulating cover 132, a mounting pipe 134 is fixedly installed on the outer wall of the heat-insulating cover 132, and a fan 135 is installed inside the mounting pipe 134, the side wall of the heat-insulating cover 132 is provided with an air inlet 136 connected to the mounting pipe 134, and the side wall of the heat-insulating cover 131 is provided with a fan 135 connected to the mounting pipe 134. The heat insulation cover 132 is connected to the ventilation hole 137, and the side wall of the heat insulation cover 131 away from the heat insulation cover 132 is provided with an air outlet 138, and the outer wall of the heat insulation cover 131 is fixedly installed with a detection tube 139 connected to the air outlet 138, and the detection tube 139 is installed inside the first temperature detector 16. The first temperature detector 16, the fan 135 and the electric heater 133 are all electrically connected to the controller 2. The first temperature detector 16 can detect the temperature and output an electrical signal to the controller 2 when the temperature reaches a threshold value. This is an existing mature technology, so it will not be elaborated here.

[0044] The trigger unit 14 is installed on the side wall of the temperature control unit 13, and the plurality of detection units 11 are electrically connected to the trigger unit 14 through the controller 2. The trigger unit 14 includes a branch hole 141 opened on the side wall of the heat preservation cover 131, and the branch hole 141 is arranged above the air outlet 138. A branch pipe 142 connected to the branch hole 141 is fixedly installed on the outer wall of the heat preservation cover 131, and a second temperature detector 143 is fixedly plugged into the upper side wall of the branch pipe 142, and the detection end of the second temperature detector 143 is fixedly connected to the upper side wall of the branch pipe 142. A thermal conductive cover 144 is provided on the outer side, and the thermal conductive cover 144 is fixedly connected to the inner wall of the branch pipe 142. A normally closed solenoid valve 145 is installed inside the branch hole 141, and a normally open solenoid valve 146 is installed inside the air outlet hole 138. The normally closed solenoid valve 145, the normally open solenoid valve 146 and the second temperature detector 143 are all electrically connected to the controller 2. The second temperature detector 143 can detect the temperature and output an electrical signal to the controller 2 when the temperature reaches a threshold value. This is an existing mature technology, so it will not be elaborated here.

[0045] The operating principle of the present invention is described as follows: stone tailings, cement, and auxiliary materials are put into the mixing tank 1 through the feed hopper 3 (stone tailings 70%-85%, cement 8%-15%, and auxiliary materials 5%-15%), and the controller 2 is started. After the controller 2 is started, the drive motor 125 is immediately controlled to work. The drive motor 125 can drive the stirring rod 121 to rotate, thereby enabling the stirring blade 122 to rotate. The stirring blade 122 can cause the stone tailings, cement, and auxiliary materials to start mixing. During the rotation of the stirring rod 121, the stirring rod 121 will rotate through the connecting plate 123 and The connecting rod drives the ring 6 to rotate clockwise. When the ring 6 rotates, the bosses 7 thereof will rotate synchronously. Under the effect of the speed difference between the bosses 7 and the mixture, the mixture at the inner edge of the mixing tank 1 will enter the detection cavity 8 through the feed hole 9, and will be discharged through the detection cavity 8 and the discharge hole 10, so that the mixture at the inner edge of the mixing tank 1 can be transferred to the center of the mixing tank 1. When the mixture at the center increases, the mixture at the center will flow to the edge, so that the exchange of the mixture at the inner edge and the center of the mixing tank 1 can be increased, and the stirring and mixing efficiency can be improved.

[0046] Secondly, when the mixture passes through the detection chamber 8, the mixture will pass through the various discharge holes 113 on the side wall of the movable plate 112 (the aperture of the discharge hole 113 is larger than the single particle size of the stone tailings, cement, and auxiliary materials to ensure that the mixture can pass smoothly). At this time, the movable plate 112 will be subject to the flow resistance of the mixture, thereby driving the insulating cylinder 114 to move a certain distance in the direction of the fixed bar 111. When the mixture is evenly mixed, the density and viscosity of the mixture are moderate. At this time, the movable plate 112 drives the insulating cylinder 114 to move a moderate distance, so that the fixed conductive ring 115 can be moved to the position of the movable conductive ring 117, so that the movable conductive ring 117 contacts the fixed conductive ring 115. At this time, the electromagnetic switch 118 will output a closed electrical signal to the controller 2 through the corresponding electrode column 154 and the power supply ring 157. On the contrary, when the mixture is unevenly mixed, the density and viscosity of the mixture are too large (for example, there are too many auxiliary materials, the auxiliary material density is too large, and the hardness is relatively high). , the resistance to the discharge hole 113 is greater), the flow resistance of the mixture on the movable plate 112 is greater. At this time, the displacement distance of the movable plate 112 is too large, so that the fixed conductive ring 115 passes over the movable conductive ring 117, or the density and viscosity of the mixture are too small (for example, when there is more cement, the density of cement is small and the particle size is small), the mixture is easier to pass through the discharge hole 113. At this time, the flow resistance applied by the mixture to the movable plate 112 is small, so the movable plate 112 is supported by the spring 119, and its displacement is small. At this time, the fixed conductive ring 115 cannot reach the position of the movable conductive ring 117. Therefore, when the mixture is mixed more evenly, the controller 2 can receive the closed electrical signal of the electromagnetic switch 118, and when the mixture is not mixed evenly enough, the controller 2 cannot receive the closed electrical signal of the electromagnetic switch 118. When the mixture is mixed evenly as a whole, each electromagnetic switch 118 will output an electrical signal to the controller 2;

[0047] After the controller 2 is started, the controller 2 will control the fan 135, the electric heater 133 and the first temperature detector 16 to start working. The fan 135 can transport the external cold air to the inside of the heat insulation cover 132, and the electric heater 133 will heat the cold air (the heating temperature is 50℃±2℃). The heated air will enter the inside of the heat insulation cover 131 through the ventilation hole 137, and then the hot air will exchange heat with the tank body of the mixing tank 1. If the temperature inside the mixing tank 1 is low, the hot air will heat the inside of the mixing tank 1 to make its internal temperature close to 50℃. If the temperature inside the mixing tank 1 rises due to the hydration heat generated by the cement, the airflow will absorb the high heat inside the mixing tank 1, thereby avoiding The temperature inside the non-mixing tank 1 is too high, so that the mixing tank 1 is mixed and stirred at a relatively stable temperature, and the airflow entering the heat preservation cover 131 will be discharged from the detection tube 139 through the air outlet 138, and the first temperature detector 16 will detect the temperature of the discharged gas. When it is detected that the temperature of the discharged gas is higher than the threshold value (i.e. 52°C), the first temperature detector 16 will output an electrical signal to the controller 2. At this time, the controller 2 will control the electric heater 133 to suspend work. When the electrical signal output by the first temperature detector 16 disappears, the controller 2 will delay for 2 minutes to control the electric heater 133 to restart work. In this way, when the temperature inside the mixing tank 1 is too high, the efficiency of heat dissipation inside the mixing tank 1 can be improved;

[0048] After the controller 2 simultaneously receives the electrical signals outputted by all the electromagnetic switches 118, the controller 2 will control the normally open electromagnetic valve 146 and the normally closed electromagnetic valve 145 to work. At this time, the airflow will be discharged from the branch pipe 142 through the branch hole 141, and the hot air will transfer the heat to the thermal cover 144, thereby increasing the temperature inside the thermal cover 144. When the second temperature detector 143 detects that the temperature reaches the threshold value (i.e., 45°C), the second temperature detector 143 will output an electrical signal to the controller 2. At this time, the controller 2 will prompt the personnel through its own voice module that the mixing of the mixture is complete (because it takes a certain amount of time for the hot air to pass through the thermal cover 144 so that the second temperature detector 143 detects that the temperature reaches the threshold value, so it can ensure that the mixture passing through each detection chamber 8 continues to maintain a uniform state, thereby ensuring that the mixture is mixed uniformly as a whole, and avoiding that when the mixture is about to be completely mixed, each electromagnetic switch 118 is only briefly triggered at the same time, resulting in a false alarm signal);

[0049] When the staff receives the prompt voice from the controller 2, the staff will transfer the evenly mixed mixture and put the mixture into the disc granulator for balling and granulation. The produced ceramsite will then be transferred out and transported to the coating machine for shell making. The shelled ceramsite will then be transferred out and placed in a resting bin for natural resting for 8 to 16 hours. Finally, the ceramsite is autoclaved for 8 hours (the temperature of the steam is required to be between 150°C and 200°C) to obtain double-layer unfired ceramsite.

[0050] The above description is only 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-layer unfired ceramsite preparation device, comprising a mixing tank (1) and a controller (2) fixedly mounted on the outer wall of the mixing tank (1), a feed hopper (3) fixedly plugged into the top of the mixing tank (1), a discharge pipe (4) fixedly plugged into the bottom of the mixing tank (1), and a discharge valve (5) installed inside the discharge pipe (4), characterized in that: Also includes: A plurality of circular rings (6) are movably arranged inside the mixing tank (1), and the outer diameter of the circular rings (6) matches the inner diameter of the mixing tank (1); the inner wall of each circular ring (6) is integrally formed with a plurality of bosses (7); a detection cavity (8) is provided inside each boss (7); and two opposite cavity walls of the detection cavity (8) are respectively provided with a feed hole (9) and a discharge hole (10); A plurality of detection units (11) are installed inside corresponding detection chambers (8), and each detection unit (11) is electrically connected to the controller (2); A stirring unit (12) is installed on the top of the mixing tank (1), and the stirring end of the stirring unit (12) is located inside the mixing tank (1), each of the rings (6) is connected to the stirring unit (12), and the stirring unit (12) is electrically connected to the controller (2); A temperature control unit (13) is installed on the outer wall of the mixing tank (1), and the temperature control unit (13) is electrically connected to the controller (2); The trigger unit (14) is installed on the side wall of the temperature control unit (13), and the plurality of detection units (11) are electrically connected to the trigger unit (14) via the controller (2).

2. A double-layer unfired ceramsite preparation device according to claim 1, characterized in that: Each of the detection units (11) comprises a fixed bar (111) fixedly mounted inside the detection chamber (8), the fixed bar (111) being arranged on a side of the detection chamber (8) close to the discharge hole (10), a movable plate (112) being slidably arranged inside the detection chamber (8), and the movable plate (112) being arranged on a side of the detection chamber (8) close to the feed hole (9), a side wall of the movable plate (112) being provided with a plurality of discharge holes (113), an insulating cylinder (114) being fixedly mounted on a side wall of the movable plate (112) close to the fixed bar (111), and a fixed conductive ring (115) being fixedly mounted on an end of the insulating cylinder (114) away from the movable plate (112), and the fixed bar (111) being close to the movable plate (111). An insulating rod (116) is fixedly installed on the side wall of one side of the mixing tank (12), and the insulating rod (116) is coaxial with the fixed conductive ring (115), and the rod wall of the insulating rod (116) is sleeved with a movable conductive ring (117), and the outer diameter of the movable conductive ring (117) is the same as the inner diameter of the fixed conductive ring (115), an electromagnetic switch (118) is installed inside the fixed bar (111), and the movable conductive ring (117) and the fixed conductive ring (115) are electrically connected to the electromagnetic switch (118), the mixing tank (1) is installed with a conductive component (15), and the controller (2) is electrically connected to the electromagnetic switch (118) through the conductive component (15), and a spring (119) is fixedly provided between the insulating cylinder (114) and the fixed bar (111).

3. A double-layer unfired ceramsite preparation device according to claim 2, characterized in that: The stirring unit (12) comprises a stirring rod (121) rotatably arranged on the top of the mixing tank (1); a plurality of stirring blades (122) are fixedly sleeved on the rod wall of the stirring rod (121); a plurality of connecting plates (123) are fixedly inserted into the rod wall of the stirring rod (121); a connecting column (124) is fixedly arranged between the bottom of each connecting plate (123) and the circular ring (6) on the same side; each stirring blade (122) is staggered with the connecting plate (123), the connecting column (124), the circular ring (6) and the boss (7); a driving motor (125) is fixedly installed on the top of the mixing tank (1), and the output shaft of the driving motor (125) is drivingly connected to the stirring rod (121).

4. A double-layer unfired ceramsite preparation device according to claim 3, characterized in that: The temperature control unit (13) comprises a heat-insulating cover (131) fixedly sleeved on the outer wall of the mixing tank (1); a heat-insulating cover (132) is fixedly mounted on the outer wall of the heat-insulating cover (131); an electric heater (133) is fixedly mounted inside the heat-insulating cover (132); a mounting pipe (134) is fixedly mounted on the outer wall of the heat-insulating cover (132); a fan (135) is mounted inside the mounting pipe (134); an air inlet hole (136) connected to the mounting pipe (134) is formed on the side wall of the heat-insulating cover (132); A ventilation hole (137) connected to the heat insulation cover (132) is provided on the side wall of the heat insulation cover (131), an air outlet hole (138) is provided on the side wall of the heat insulation cover (131) away from the heat insulation cover (132), and a detection tube (139) connected to the air outlet hole (138) is fixedly installed on the outer wall of the heat insulation cover (131), and a first temperature detector (16) is installed inside the detection tube (139), and the first temperature detector (16), the fan (135) and the electric heater (133) are all electrically connected to the controller (2).

5. A double-layer unfired ceramsite preparation device according to claim 4, characterized in that: The trigger unit (14) comprises a branch hole (141) provided on a side wall of a heat preservation cover (131), and the branch hole (141) is arranged above an air outlet hole (138); a branch pipe (142) connected to the branch hole (141) is fixedly installed on the outer wall of the heat preservation cover (131); a second temperature detector (143) is fixedly plugged into the upper pipe wall of the branch pipe (142); a heat conducting cover (144) is sleeved on the outer side of a detection end of the second temperature detector (143); the heat conducting cover (144) is fixedly connected to the inner wall of the branch pipe (142); a normally closed electromagnetic valve (145) is installed inside the branch hole (141); a normally open electromagnetic valve (146) is installed inside the air outlet hole (138); the normally closed electromagnetic valve (145), the normally open electromagnetic valve (146) and the second temperature detector (143) are all electrically connected to the controller (2).

6. A double-layer unfired ceramsite preparation device according to claim 5, characterized in that: The conductive component (15) comprises a round cover (151) fixedly mounted on the top of the mixing tank (1), and the round cover (151) is rotatably connected to the stirring rod (121); a rotating disk (152) is fixedly sleeved on one end of the rod wall of the stirring rod (121) located inside the round cover (151); a plurality of insulating covers (153) are fixedly mounted on the end surface of the rotating disk (152); and two electrode columns (154) are slidably connected to the top of each insulating cover (153); and the end surface of the rotating disk (152) is located inside the insulating cover (153). An insulating elastic pad (155) is fixedly installed in a position, and two electrode columns (154) are installed together on the top of the insulating elastic pad (155) on the same side. An insulating ring (156) is fixedly installed on the inner top of the mixing tank (1), and multiple groups of power supply rings (157) are fixedly inserted at the bottom of the insulating ring (156), and the top of each electrode column (154) is in sliding contact with the bottom of the power supply ring (157) on the same side. The controller (2) is electrically connected to the corresponding electromagnetic switch (118) through the power supply ring (157) and the electrode column (154).

7. A preparation process for the double-layer unfired ceramsite preparation equipment according to claim 6, characterized in that: The process includes the following steps: S1, feeding stone tailings, cement and auxiliary materials into a mixing tank (1) through a feed hopper (3), with stone tailings accounting for 70%-85%, cement accounting for 8%-15%, and auxiliary materials accounting for 5%-15%, and starting a controller (2); S2, the controller (2) controls the stirring unit (12), the temperature control unit (13), and the plurality of detection units (11) to work synchronously to mix the stone tailings, cement, and auxiliary materials; S3, after the mixing unit (12) mixes the mixed material, the controller (2) controls the trigger unit (14) to operate according to the electrical signal output by the detection unit (11), and after the controller (2) receives the electrical signal output by the trigger unit (14), the controller (2) prompts the personnel through its own voice module that the mixing of the mixed material is completed; S4, transferring the mixed material obtained in step S3 and putting it into a disc granulator for pelletization; S5, transferring the ceramsite obtained in step S4 and conveying it to a coating machine for shell making; S6, the ceramsite shelled in step S5 is transferred out and placed in a resting bin for natural resting for 8 hours to 16 hours, and then the ceramsite is autoclaved for 8 hours, and the temperature of the steam is required to be between 150° C. and 200° C., so as to obtain double-layer unfired ceramsite.

8. A preparation process for the double-layer unfired ceramsite preparation equipment according to claim 7, characterized in that: The auxiliary material is one or more of steel slag powder, foundry ash and fly ash.

9. A preparation process for the double-layer unfired ceramsite preparation equipment according to claim 7, characterized in that: The angle of the ball-forming disk of the disk granulator in step S4 is controlled at 30°-60°, and the rotation speed is 10 r / min-12 r / min.

10. A preparation process for the double-layer unfired ceramsite preparation equipment according to claim 7, characterized in that: The water content of the stone tailings is less than 30%, and the fineness of the stone tailings and auxiliary materials is not more than 10% on a 200-mesh sieve.

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