Microorganism carbon sealing consolidation material sample preparation device

Abstract

The utility model discloses a microorganism sealed carbon consolidation material sample preparation device which comprises a bottom frame, a first material storage tank, a second material storage tank, a third material storage tank, a material mixing box, a forming mold, a locking mechanism, a cover plate, a material receiving mechanism and a PLC (Programmable Logic Controller), an independent circular tunnel cavity and an independent square tunnel cavity are arranged in the forming mold, and the cover plate is arranged at the right end of the forming mold. The first storage tank, the second storage tank and the third storage tank are all arranged above the material mixing box, the material mixing box is connected with the two tunnel cavity pipelines, a first loading head is arranged in the circular tunnel cavity in a sliding mode, a second loading head is arranged in the square tunnel cavity in a sliding mode, and the first loading head and the second loading head are each provided with a driving mechanism. The receiving mechanism is arranged on the right side of the forming die. The device is specially used for small-batch manufacturing of microorganism carbon sealing consolidation material samples, the automation degree is high, the proportion of raw materials is accurately controlled, the pressure of cylindrical samples and cuboid samples is controlled, and the sample manufacturing efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of consolidated material sample preparation technology, and specifically relates to a microbial carbon-sealing consolidated material sample preparation device. BACKGROUND

[0002] A large amount of coal-based solid waste is generated in the process of coal mining and utilization. The accumulation of a large amount of coal-based solid waste on the ground will cause waste and damage to land resources. If not treated, the relatively high organic carbon contained therein will release a large amount of CO2 under natural conditions, intensifying the pressure of global climate change. Starting from the pollution control route of "waste treatment and waste into treasure", realizing the resource utilization of coal-based solid waste can exist stably in nature for a long time, thereby reducing the harm to the environment and ecology, and realizing the mineralization of CO2. Although the existing carbon sequestration technology can effectively sequester CO2, in the field of coal, especially in the process of coal production, a large amount of waste is generated. It is not enough to treat CO2, but also to fully utilize the generated coal-based solid waste to reduce the damage and waste of land resources.

[0003] Chinese patent (application number 2022107826712) provides a coal-based solid waste type material sample preparation system simulating goaf environment, comprising a goaf environment simulation box, a hydraulic device, a high-pressure water pump, and a simulation solution pool. The goaf environment simulation box is a hollow structure, and the inside is used for storing the coal-based solid waste type material sample of the actual goaf, i.e. the simulated filling body. The side of the goaf environment simulation box has a water injection hole and a drainage hole. The simulation solution pool is connected to the water injection hole by the high-pressure water pump, used for conveying simulation solution into the goaf environment simulation box. The simulation solution is an aqueous solution prepared according to the water quality of the actual goaf mine water.

[0004] Chinese patent (application number CN202411226701.7) discloses a microalgae carbon sequestration device, which comprises a base, a carbon sequestration reaction module, an auxiliary module, a light module, and a carbon dioxide supply module. It is a carbon sequestration device using biological technology. The prior art does not combine CO2 sequestration with coal-based solid waste to produce a new material test device. After the coal-based solid waste is re-solidified and formed, it needs to meet certain strength requirements. The raw material ratio and carbon sequestration effect need to be determined through testing. A large number of microbial carbon-sealing consolidated material samples need to be prepared. The existing equipment cannot meet the batch production requirements of microbial carbon-sealing consolidated material samples. Therefore, the prior art needs to be further improved and improved UTILITY MODEL CONTENT

[0005] In view of the defects in the prior art, the utility model aims to provide a microbial carbon-sealing consolidated material sample preparation device to solve the problem that the existing equipment cannot meet the batch production requirements of microbial carbon-sealing consolidated material samples.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A microbial carbon-sealing and solidification material sample preparation device includes a base frame, a first storage tank, a second storage tank, a third storage tank, a material mixing box, a molding die, a drive mechanism, a locking mechanism, a cover plate, a receiving mechanism, and a PLC controller. The molding die is horizontally positioned on the top of the base frame and has two independent tunnel cavities inside, both of which penetrate the left and right ends of the molding die.

[0008] Two tunnel cavities are arranged in parallel, one in front of the other. One is a circular tunnel cavity and the other is a square tunnel cavity. The cover plate is located at the right end of the forming mold and is equipped with a first hydraulic cylinder. The first hydraulic cylinder drives the cover plate to rotate, which can close the right ends of the two tunnel cavities. The locking mechanism is located at the top of the forming mold.

[0009] The material mixing box is located above the molding die, and its bottom outlet is connected to the pipelines of two tunnel cavities. The first, second and third storage tanks are evenly arranged in a ring above the material mixing box. The bottom of each storage tank is connected to the material mixing box through a first pipe, and a rotor flow meter is installed on the first pipe.

[0010] The circular tunnel cavity is equipped with a loading head one that matches its cross-section, and the square tunnel cavity is equipped with a loading head two that matches its cross-section. The left side of the loading head one and the loading head two are respectively equipped with the aforementioned driving mechanism. The loading head one slides laterally with the side wall of the circular tunnel cavity, and the loading head two slides laterally with the side wall of the square tunnel cavity.

[0011] The receiving mechanism is located on the right side of the forming mold and includes a base, a receiving tray, a gear transmission assembly, and a first servo motor. The receiving tray is horizontally arranged above the base and rotates in coordination with it. The first servo motor drives the receiving tray to rotate horizontally through the gear transmission assembly.

[0012] Furthermore, the base frame is a rectangular steel frame structure, and the bottom of the forming mold is bolted to the top of the base frame.

[0013] Two drive mechanisms are arranged side by side on the upper left of the base frame and correspond one-to-one with the two tunnel cavities. The drive mechanism includes a second hydraulic cylinder, a transmission rod and a force sensor. The second hydraulic cylinder is located outside the left end of the molding die and is fixedly connected to the top of the base frame.

[0014] The transmission rod is horizontally positioned inside the tunnel cavity. Its left end is fixedly connected to the piston rod end of the second oil cylinder, and its right end is fixedly connected to the corresponding loading head through a force sensor.

[0015] Further, the cover plate is a square metal flat plate, the lower side of the cover plate is rotationally connected with the bottom of the forming mold, the first oil cylinder is located at the lower right of the forming mold, the cylinder body end thereof is hingedly connected with the underframe, and the piston rod end thereof is hingedly connected with the middle portion of the cover plate away from the side of the forming mold.

[0016] In the working state, the first oil cylinder drives the cover plate to rotate counterclockwise to close the right ends of the two tunnel cavities, the first oil cylinder drives the cover plate to rotate clockwise to open the right ends of the two tunnel cavities, and the cover plate is rotated to the horizontal state, and the right end thereof is located on the left side surface of the receiving disc.

[0017] Further, the locking mechanism comprises a third oil cylinder, a pull rod, a guide sleeve and a clamping hook, the guide sleeve is fixed on the top right side of the forming mold through a support, the pull rod is transversely arranged in the inner side of the guide sleeve and transversely slidably connected with the guide sleeve.

[0018] The third oil cylinder is arranged on the left side of the guide sleeve, the piston rod end thereof is fixedly connected with the left end of the pull rod, and the clamping hook is arranged on the right side of the forming mold and fixedly connected with the right end of the pull rod in an integrated manner.

[0019] Further, the top of each tunnel cavity is provided with an inlet, each inlet is provided with a star valve, and the top of each star valve is connected with a second pipe body.

[0020] The bottom of the material mixing box is connected with a third pipe body arranged vertically, and the lower end of the third pipe body is connected with the upper ends of the two second pipe bodies through a Y-shaped three-way pipe.

[0021] Further, the material mixing box comprises a box shell and a stirring mechanism, the box shell is a circular shell with a closed top and a tapered lower portion, the stirring mechanism comprises a stirring shaft, stirring blades and a second servo motor, the stirring shaft is vertically arranged in the interior of the box shell, and the upper end thereof penetrates through the box shell and is fixedly connected with the output shaft of the second servo motor arranged above the box shell in a coaxial manner.

[0022] The stirring blades are two, the two stirring blades are symmetrically arranged on the two sides of the stirring shaft and close to the inner wall of the box shell, and each stirring blade is fixedly connected with the stirring shaft through at least two cross bars.

[0023] Further, the loading head one comprises a circular pressing plate and an arc-shaped sealing plate, the circular pressing plate is vertically arranged in the interior of the circular tunnel cavity, the diameter of the circular pressing plate is consistent with the inner diameter of the circular tunnel cavity, and the right end of the arc-shaped sealing plate is fixedly connected with the upper left side of the circular pressing plate in an integrated manner.

[0024] The loading head two comprises a square pressing plate and a planar sealing plate, the square pressing plate is vertically arranged in the interior of the square tunnel cavity, the four side edges of the square pressing plate are attached to the inner wall of the square tunnel cavity, and the right end of the planar sealing plate is fixedly connected with the upper left end of the square pressing plate in an integrated manner, the upper surface of the planar sealing plate is attached to and slidably connected with the top wall of the square tunnel cavity.

[0025] Further, the bottom of the material receiving tray is connected with the base through a rotary support, and the gear transmission assembly comprises an external gear ring and a pinion, the external gear ring is fixedly installed on the bottom of the material receiving tray and coaxially arranged with the bottom.

[0026] The first servo motor is fixed on the base, the pinion is located outside the external gear ring and is installed on the output shaft of the first servo motor, and the pinion is in mesh with the external gear ring.

[0027] Compared with the prior art, the microorganism carbon-sealing consolidation material sample preparation device has the beneficial technical effects that: the device is specially used for small-batch production of microorganism carbon-sealing consolidation material samples, has high automation degree, can accurately control the proportion of raw materials, and can control the pressure of cylindrical samples and cuboid samples, and has high sample production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0028] Fig. 1 is a structural schematic view of the microorganism carbon-sealing consolidation material sample preparation device.

[0029] Fig. 2 is an exploded view of the forming die, the loading head one and the loading head combination structure.

[0030] Fig. 3 is a partial sectional view of the forming die. DETAILED DESCRIPTION

[0031] The microorganism carbon-sealing consolidation material sample preparation device will be described in detail below with reference to the drawings:

[0032] Combined Figs. 1 to 3 , a microorganism carbon-sealing consolidation material sample preparation device, comprising a base frame 1, a first storage tank 21, a second storage tank 22, a third storage tank 23, a material mixing box 3, a forming die 4, a driving mechanism, a locking mechanism 5, a cover plate 6, a material receiving mechanism 7 and a PLC controller, the base frame 1 is a rectangular steel frame structure, and the bottom of the base frame 1 is bolted and fixedly connected with the ground or a workbench. The forming die 4 is horizontally installed at the top of the base frame 1, and the bottom of the forming die 4 is bolted and fixedly connected with the top of the base frame 1.

[0033] The forming die 4 is internally provided with two independent tunnel cavities, both of which penetrate through the left and right ends of the forming die 4, and the right end face of the forming die 4 is a plane. The two tunnel cavities are arranged in parallel in front of and behind each other, one of which is a circular tunnel cavity 41, and the other is a square tunnel cavity 42, and the circular tunnel cavity 41 is located at the rear side of the square tunnel cavity 42. Each tunnel cavity is provided with a feeding port 43 at the top, and each feeding port 43 is provided with a star valve 44, and each star valve 44 is connected with a second pipe body 37 at the top, and the second pipe body 37 is vertically arranged.

[0034] The material mixing box 3 is fixed above the forming mold 4 by a support, and the outlets at the bottom of the material mixing box 3 are respectively connected with two tunnel cavity pipelines. The first storage tank 21, the second storage tank 22 and the third storage tank 23 are annularly and uniformly arranged above the material mixing box 3, and the bottom of each storage tank is connected with the material mixing box 3 through a first pipe body 24, and a rotor flowmeter 25 is arranged on the first pipe body 24. The first storage tank 21 contains a mixture of gangue powder and fly ash, the second storage tank 22 contains a culture solution formed by mixing deionized water and bacteria, the bacteria in the culture solution are Bacillus pasteurii and Bacillus safensis, and the third storage tank 23 contains a nutrient solution formed by mixing urea and calcium chloride at a ratio of 1:1, and the rotor flowmeters 25 control the materials in the above three storage tanks to be added into the material mixing box 3 in a certain proportion.

[0035] Specifically, the material mixing box 3 comprises a box shell 31 and a stirring mechanism, the box shell 31 is a circular shell with a closed top and a tapered bottom, the stirring mechanism comprises a stirring shaft 32, stirring blades 33 and a second servo motor 34, the stirring shaft 32 is vertically arranged in the interior of the box shell 31, and the upper end penetrates through the box shell 31 and is coaxially fixedly connected with the output shaft of the second servo motor 34 arranged above the box shell 31.

[0036] The stirring blades 33 are two, and the two stirring blades 33 are symmetrically arranged on the two sides of the stirring shaft 32 and close to the inner wall of the box shell 31, and each stirring blade 33 is fixedly connected with the stirring shaft 32 through at least two cross rods.

[0037] The bottom of the material mixing box 3 is connected with a vertically arranged third pipe body 35, and the lower end of the third pipe body 35 is connected with the upper ends of two second pipe bodies 37 through a Y-shaped three-way pipe 36. The well-stirred cementitious material in the material mixing box 3 is divided into the interiors of the two second pipe bodies 37 through the third pipe body 35 at the bottom of the material mixing box 3 and the three-way pipe 36, and is respectively added into the interiors of the circular tunnel cavity 41 and the square tunnel cavity 42 through two star-shaped valves 44, and the star-shaped valves 44 quantitatively control the addition amount of the cementitious material into the two tunnel cavities.

[0038] In addition, the inside of the circular tunnel cavity 41 is provided with a loading head one matching the cross section thereof, the inside of the square tunnel cavity 42 is provided with a loading head two matching the cross section thereof, the left side of the loading head one and the loading head two is respectively provided with one of the driving mechanisms, the loading head one is in transverse sliding fit with the side wall of the circular tunnel cavity 41, the loading head one has good sealing with the side wall of the circular tunnel cavity 41, the loading head two is in transverse sliding fit with the side wall of the square tunnel cavity 42, the loading head two has good sealing with the side wall of the square tunnel cavity 42.

[0039] Specifically, the loading head one comprises a circular pressing plate 81 and an arc-shaped sealing plate 82, the circular pressing plate 81 is vertically arranged inside the circular tunnel cavity 41, the diameter of the circular pressing plate 81 is consistent with the inner diameter of the circular tunnel cavity 41, the right end of the arc-shaped sealing plate is fixedly connected with the upper left side of the circular pressing plate 81 in an integrated manner, the circular outer wall of the circular pressing plate 81 is always in fit with the top of the circular tunnel cavity 41, and the loading head one can close or open the feeding port 43 at the top of the circular tunnel cavity 41 when sliding left and right inside the circular tunnel cavity 41. The loading head two comprises a square pressing plate 83 and a planar sealing plate 84, the square pressing plate 83 is vertically arranged inside the square tunnel cavity 42, the four side edges of the square pressing plate 83 are in fit with the inner wall of the square tunnel cavity 42, the right end of the planar sealing plate 84 is fixedly connected with the upper left end of the square pressing plate 83 in an integrated manner, and the upper surface of the planar sealing plate 84 is in fit and sliding fit with the top wall of the square tunnel cavity 42, and the loading head two can close or open the feeding port 43 at the top of the square tunnel cavity 42 when sliding left and right inside the square tunnel cavity 42.

[0040] The two driving mechanisms are arranged in parallel at the upper left of the base frame 1 and correspond to the two tunnel cavities respectively, the driving mechanism comprises a second oil cylinder 91, a transmission rod 92 and a force sensor 93, the second oil cylinder 91 is located outside the left end of the forming die 4 and is fixedly connected with the top of the base frame 1. The transmission rod 92 is transversely arranged inside the tunnel cavity, the left end of the transmission rod 92 is fixedly connected with the end portion of the piston rod of the second oil cylinder 91, and the right end of the transmission rod 92 is fixedly connected with the corresponding loading head through the force sensor 93.

[0041] After the star-shaped valve 44 is opened, the inside of the circular tunnel cavity 41 and the square tunnel cavity 42 is respectively filled with the gelling material through the two feeding ports 43, at this time, the loading head one and the loading head two are located at the left side of the two feeding ports 43, and the right end of the two tunnel cavities is in a closed state. During the process of filling the gelling material, the air in the tunnel cavities is discharged through the gap. After the gelling material in the two tunnel cavities is filled to a certain amount, the star-shaped valve 44 is closed, and the filling amount of the gelling material in each tunnel cavity can be independently controlled. Then, the second oil cylinder 91 drives the corresponding loading head to move rightwards through the transmission rod 92, and the feeding port 43 at the top of the corresponding tunnel cavity is closed, the loading head one presses the gelling material in the circular tunnel cavity 41 into a cylindrical sample, and the loading head two presses the gelling material in the square tunnel cavity 42 into a cuboid sample.

[0042] The cover plate 6 is arranged at the right end of the forming mold 4, and is provided with a first oil cylinder 61 which drives the cover plate 6 to rotate to close the right ends of the two tunnel cavities. Specifically, the cover plate 6 is a square metal flat plate, the lower side of the cover plate 6 is rotatably connected to the bottom of the forming mold 4, and the first oil cylinder 61 is located at the lower right of the forming mold 4, with its cylinder body end hinged to the chassis 1 and its piston rod end hinged to the middle of the side of the cover plate 6 away from the forming mold 4.

[0043] In the working state, the first oil cylinder 61 drives the cover plate 6 to rotate counterclockwise to close the right ends of the two tunnel cavities, and the first oil cylinder 61 drives the cover plate 6 to rotate clockwise to open the right ends of the two tunnel cavities. When the cover plate 6 is rotated to the horizontal state, the right end thereof is located at the left side surface of the receiving tray 72.

[0044] The locking mechanism 5 is arranged at the top of the forming mold 4, and includes a third oil cylinder 51, a pull rod 52, a guide sleeve 53, and a clamping hook 54. The guide sleeve 53 is fixed to the top right side of the forming mold 4 through a support, the pull rod 52 is transversely arranged in the inner side of the guide sleeve 53 and transversely slides with the guide sleeve 53. The third oil cylinder 51 is arranged at the left side of the guide sleeve 53, with its piston rod end fixedly connected to the left end of the pull rod 52, and the clamping hook 54 is arranged at the right side of the forming mold 4 and is fixedly connected to the right end of the pull rod 52 as a whole.

[0045] Before the inside of the forming mold 4 is filled with the gelling material through the feeding port 43, the first oil cylinder 61 drives the cover plate 6 to rotate upward around the connection at the lower right end of the forming mold 4 to close the right ends of the circular tunnel cavity 41 and the square tunnel cavity 42. Then, the third oil cylinder 51 drives the clamping hook 54 to move leftward through the pull rod 52, clamps the right upper end of the cover plate 6 and applies a certain force, and the two second oil cylinders 91 respectively drive the loading heads one and two to move rightward in the corresponding tunnel cavities. The force sensor 93 measures the force of the corresponding loading head and sends the data to the PLC controller in real time. When the force of the loading head reaches the set value, the force of the loading head is maintained for a period of time and then reduced to zero. After the clamping hook 54 of the locking mechanism 5 and the cover plate 6 move rightward by a distance and stop, the first oil cylinder 61 drives the cover plate 6 to flip rightward to the horizontal state, and the right end of the cover plate 6 is close to the upper surface of the receiving tray 72.

[0046] The two second oil cylinders 91 respectively drive the corresponding loading heads to move rightward to push the cylindrical sample and the cuboid sample out of the inside of the forming mold 4, continue to push them to the top left side of the receiving tray 72 through the surface of the cover plate 6, and then the two second oil cylinders 91 respectively drive the corresponding loading heads to move leftward to the initial position. The first oil cylinder 61 drives the cover plate 6 to flip upward to close the right end of the forming mold 4, and the clamping hook 54 of the locking mechanism 5 locks the upper end of the cover plate 6.

[0047] The receiving mechanism 7 is arranged at the right side of the forming die 4, comprising a base 71, a receiving disc 72 and a gear transmission assembly and a first servo motor 73, the receiving disc 72 is horizontally arranged above the base 71 and rotationally connected therewith, and the first servo motor 73 drives the receiving disc 72 to horizontally rotate through the gear transmission assembly.

[0048] The bottom of the receiving disc 72 is rotationally connected with the base 71 through a rotary support 74, the gear transmission assembly comprises an outer gear ring 75 and a pinion 76, the outer gear ring 75 is fixedly installed at the bottom of the receiving disc 72 and coaxially arranged therewith.

[0049] During the process that the loading head one and the loading head two push the cylindrical samples and the cuboid samples from the forming die 4 to the receiving disc 72, the receiving disc 72 is in a stopped state, after the cover plate 6 seals the forming die 4, the first servo motor 73 drives the receiving disc 72 to rotate counterclockwise by 90° through the gear transmission assembly, the receiving disc 72 is stopped again, the cylindrical samples and the cuboid samples located at the right side of the receiving disc 72 are manually taken out and transferred to a curing box for curing, the above operation process is repeated for multiple times, multiple cylindrical samples and cuboid samples can be obtained, and the cured cylindrical samples and cuboid samples are subjected to pressure test, so that the raw material ratio meeting the requirements can be obtained.

[0050] The parts not described in the utility model can be realized by using or referring to the existing technology.

[0051] In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance.

[0052] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0053] Of course, the above description is not a limitation of the utility model, and the utility model is also not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. A device for preparing microbial carbon-sealed material samples, characterized in that, It includes a base frame, a first storage tank, a second storage tank, a third storage tank, a material mixing box, a molding die, a drive mechanism, a locking mechanism, a cover plate, a receiving mechanism, and a PLC controller. The molding die is horizontally positioned on the top of the base frame and has two independent tunnel cavities inside, both of which connect to the left and right ends of the molding die. Two tunnel cavities are arranged in parallel, one in front of the other. One is a circular tunnel cavity and the other is a square tunnel cavity. The cover plate is located at the right end of the forming mold and is equipped with a first hydraulic cylinder. The first hydraulic cylinder drives the cover plate to rotate, which can close the right ends of the two tunnel cavities. The locking mechanism is located at the top of the forming mold. The material mixing box is set above the molding die, and its bottom outlet is connected to the two tunnel cavity pipelines respectively. The first, second and third storage tanks are evenly arranged in a ring above the material mixing box. The bottom of each storage tank is connected to the material mixing box through a first pipe body, and a rotor flow meter is installed on the first pipe body respectively. The circular tunnel cavity is equipped with a loading head one that matches its cross-section, and the square tunnel cavity is equipped with a loading head two that matches its cross-section. The left side of the loading head one and the loading head two are respectively equipped with the aforementioned driving mechanism. The loading head one slides laterally with the side wall of the circular tunnel cavity, and the loading head two slides laterally with the side wall of the square tunnel cavity. The receiving mechanism is located on the right side of the forming mold and includes a base, a receiving tray, a gear transmission assembly, and a first servo motor. The receiving tray is horizontally arranged above the base and rotates in coordination with it. The first servo motor drives the receiving tray to rotate horizontally through the gear transmission assembly.

2. The apparatus for preparing microbial carbon-sealed material samples according to claim 1, characterized in that, The base frame is a rectangular steel frame structure, and the bottom of the forming mold is bolted to the top of the base frame; Two drive mechanisms are arranged side by side on the upper left of the base frame and correspond one-to-one with the two tunnel cavities. The drive mechanism includes a second hydraulic cylinder, a transmission rod and a force sensor. The second hydraulic cylinder is located outside the left end of the forming mold and is fixedly connected to the top of the base frame. The transmission rod is horizontally positioned inside the tunnel cavity. Its left end is fixedly connected to the piston rod end of the second oil cylinder, and its right end is fixedly connected to the corresponding loading head through a force sensor.

3. The apparatus for preparing microbial carbon-sealed material samples according to claim 1, characterized in that, The cover plate is a square metal plate. The lower side of the cover plate is rotatably connected to the bottom of the forming mold. The first oil cylinder is located at the lower right of the forming mold. Its cylinder body end is hinged to the base frame, and its piston rod end is hinged to the middle of the cover plate on the side away from the forming mold. In operation, the first hydraulic cylinder drives the cover plate to rotate counterclockwise to close the right end of the two tunnel cavities, and the first hydraulic cylinder drives the cover plate to rotate clockwise to open the right end of the two tunnel cavities. The cover plate rotates to a horizontal position, and its right end is located on the left side surface of the receiving tray.

4. The apparatus for preparing microbial carbon-sealing and solidification material samples according to claim 3, characterized in that, The locking mechanism includes a third hydraulic cylinder, a pull rod, a guide sleeve, and a hook. The guide sleeve is fixed to the top right side of the forming mold by a bracket. The pull rod passes laterally through the inner side of the guide sleeve and slides laterally with the guide sleeve. The third oil cylinder is located on the left side of the guide sleeve, with its piston rod end fixedly connected to the left end of the pull rod. The hook is located on the right side of the forming mold, and the right end of the pull rod is fixedly connected as a whole.

5. The apparatus for preparing microbial carbon-sealed material samples according to claim 1, characterized in that, Each tunnel cavity is equipped with a feed inlet at the top, and each feed inlet is equipped with a star valve. A second pipe is connected to the top of each star valve. The bottom outlet of the material mixing box is connected to a vertically arranged third pipe, and the lower end of the third pipe is connected to the upper ends of two second pipes through an inverted Y-shaped tee.

6. The apparatus for preparing microbial carbon-sealed material samples according to claim 1, characterized in that, The material mixing box includes a box shell and a stirring mechanism. The box shell is a circular shell that is closed at the top and conical at the bottom. The stirring mechanism includes a stirring shaft, stirring blades and a second servo motor. The stirring shaft is vertically arranged inside the box shell, and its upper end extends out of the box shell and is coaxially and fixedly connected to the output shaft of the second servo motor arranged above the box shell. There are two stirring blades, which are symmetrically arranged on both sides of the stirring shaft and close to the inner wall of the outer shell of the box. Each stirring blade is fixedly connected to the stirring shaft by at least two crossbars.

7. The apparatus for preparing microbial carbon-sealed material samples according to claim 1, characterized in that, The loading head includes a circular pressure plate and an arc-shaped sealing plate. The circular pressure plate is vertically arranged inside the circular tunnel cavity, and its diameter is consistent with the inner diameter of the circular tunnel cavity. The right end of the arc-shaped sliding plate is fixedly connected to the upper left side of the circular pressure plate to form a whole. The second loading head includes a square pressure plate and a flat sealing plate. The square pressure plate is vertically arranged inside the square tunnel cavity, and its four sides are in contact with the inner wall of the square tunnel cavity. The right end of the flat sealing plate is fixedly connected to the upper left end of the square pressure plate, and its upper surface is in contact with and slides against the top wall of the square tunnel cavity.

8. The apparatus for preparing microbial carbon-sealed material samples according to claim 1, characterized in that, The bottom of the receiving tray is rotatably connected to the base via a slewing bearing. The gear transmission assembly includes an external gear ring and a pinion. The external gear ring is fixedly installed on the bottom of the receiving tray and arranged coaxially with it. The first servo motor is fixed on the base, and the pinion is located outside the external gear ring and is mounted on the output shaft of the first servo motor. The pinion and the external gear ring are connected.

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