A complete set of equipment and production process for producing solidified soil

Abstract

The present invention relates to the field of solidified soil production, and specifically relates to a complete set of equipment for producing solidified soil, including a vibrating feeder and a material storage tower. A feed pipe is connected between the vibrating feeder and the material storage tower. The material storage tower is provided with a feed inlet and a discharge outlet. A microwave heating element is also provided inside the material storage tower. An inner cylinder is provided in the material storage tower. The inner cylinder has a sandwich layer, and the microwave heating element is installed in the sandwich layer. A stuffy space is formed between the inner cylinder and the material storage tower. An upper flow conveying unit is provided between the upper end of the inner cylinder and the feed pipe. A lower flow conveying unit is provided in the inner cylinder. By means of the upper flow conveying unit and the lower flow conveying unit to convey the sludge up and down in the material storage tower, the heating of the sludge by the microwave heating element can achieve a better effect. Compared with the traditional material storage method, the dehydration step is reduced, the dehydration efficiency is improved, and it is beneficial to the formation of solidified soil. The present invention also relates to a production process for producing solidified soil.

Description

Technical Field

[0001] The invention relates to the field of solidified soil production, in particular to a complete set of equipment for producing solidified soil, and also to a production process for producing solidified soil. Background Art

[0002] With the rapid advancement of urbanization, the amount of urban construction waste has increased dramatically year by year, especially in some coastal areas. Due to the deep underground silty soil layer, a large amount of silty construction waste and waste mud with poor engineering properties have been generated in the process of rail transit and real estate development. These soils have high natural moisture content, poor permeability, are not easy to compact, have low bearing capacity, and are difficult to use directly. In recent years, the country has advocated the construction of "zero-waste cities". In order to achieve the goal of "turning waste into treasure" and reducing the amount of construction waste at the source, these silty construction waste with poor engineering properties and bored pile waste mud have become the main source of raw materials for solidified soil base soil. The waste mud generated during the drilling of bored piles is initially dehydrated by a filter press and pressed into a mud cake. The water content of the mud cake after filtration is generally about 40%. The water content of the silty construction waste generated during rail shield tunneling and basement foundation pit excavation is generally about 50%. Both of the above cannot be directly used to make solidified soil, and further dehydration is required to facilitate rolling and solidification at the optimal water content state.

[0003] The existing traditional dehydration methods are natural drying or quicklime stewing: add about 3% quicklime to the mud cake or silty construction waste after mud filter pressing - then stew - stir - stew again - stir again until the water content is reduced to about 25%, and then crush it. This method takes a long time to dehydrate the base soil raw materials and is not efficient, which restricts the further promotion of soil solidification technology.

[0004] The currently publicly disclosed Chinese patent CN201110121935.1 undertakes a flexible pipe extrusion dehydration and conveying device for sludge, which includes a frame, a receiving bin, a conveyor, a pipeline system, a filtrate discharge system, and a control system, and is integrated into a mechatronic fully automatic flexible pipe extrusion dehydration and conveying device for sludge. The conveyor includes a flexible pipe filter chamber, a filter chamber opening and closing mechanism, and an extrusion mechanism. The extrusion mechanism includes an extrusion splint structure and an extrusion force generating mechanism. The extrusion splint structure includes front and rear splints. The flexible pipe filter chamber includes an upper flange, a lower flange, and a filter pipe unit. The upper flange includes a receiving material port and a filter chamber upper sealing structure. The receiving material port is an open logistics channel. The upper flange is fixed on the frame. The filter pipe unit is suspended under the upper flange. The lower flange is suspended under the filter pipe unit. The axis of the oval contour of the horizontal cross-section of the filter pipe unit of the flexible pipe filter chamber is perpendicular to the extrusion force direction. Along the extrusion force direction, the flexible filter pipe unit of the flexible pipe filter chamber is clamped between the front and rear splints of the extrusion mechanism. The lower flange includes a slag discharge outlet and its filter chamber lower sealing structure. The filter pipe unit includes the following radially flexible elements: at least two layers of tubular filter media and connectors. The axis centerlines of the horizontal cross-sections of each layer of tubular filter media are oval contours and coincide with each other. The innermost layer of tubular filter media forms a filter chamber. The upper end of each layer of tubular filter media is connected to the upper flange through the filter chamber upper sealing structure and can open and close the filter chamber. The lower ends of the stacked tubular filter media are connected to the filter chamber lower sealing structure and sealed. The lower end of the tubular filter media communicates with the slag discharge outlet. The receiving material port of the upper flange communicates with the filter chamber. A filter chamber opening and closing mechanism is provided at the lower part of the receiving material port of the adjacent filter chambers. The outermost layer of tubular filter media uses a rigid woven conveyor belt. The rigid woven conveyor belt encloses a tubular radially flexible vertical wall structure of the filter chamber with a fixed axial dimension. The upper end of the tubular rigid woven conveyor belt is axially connected to the lower end of the upper flange. The rigid woven conveyor belt forms a series of sieve holes. The rigid woven conveyor belt includes ribs and a framework. The ribs are a series of through strips with the long axis downward. The framework is a support body surrounding the through strips. Every two adjacent frameworks are hinged to the same through strip. There are two through strips on the left and right in each framework hole. Each framework is connected to the adjacent frameworks on the left and right by using these two through strips. Therefore, all the frameworks of the rigid woven conveyor belt are mutually overlapped and connected into a closed ring by using the through strips.

[0005] According to the above-mentioned patent, the patent dehydrates the slurry by extrusion, and the effect is not good. Therefore, at present, a device for dehydrating the slurry in the form of microwave heating is needed. Summary of the Invention

[0006] Aiming at the problems existing in the prior art, a complete set of equipment for producing solidified soil is provided. In the present invention, the sludge is conveyed up and down in the material-storing tower by an upper conveying unit and a lower conveying unit, so that the heating of the sludge by the microwave heating element can achieve better effects. Compared with the traditional material-storing method, the dehydration step is reduced, the dehydration efficiency is improved, and the dehydration rate of the sludge when discharged from the material-storing tower is maintained in a qualified state, which is beneficial to the formation of solidified soil.

[0007] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0008] The present invention provides a complete set of equipment for producing solidified soil, including a vibrating feeder and a material-storing tower. A feeding pipe is connected between the vibrating feeder and the material-storing tower. The material-storing tower is provided with a feeding port for connecting the feeding pipe and a discharging port for discharging the sludge. A microwave heating element is further arranged in the material-storing tower. An inner cylinder is coaxially and fixedly arranged in the material-storing tower. The inner cylinder has an interlayer, and the microwave heating element is installed in the interlayer. A stuffy and hot space for dehydrating the sludge is formed between the inner cylinder and the material-storing tower. An upper conveying unit for conveying the sludge from bottom to top is arranged between the upper end of the inner cylinder and the feeding pipe in the stuffy and hot space. A lower conveying unit for conveying the sludge from top to bottom is arranged in the inner cylinder.

[0009] Preferably, the upper conveying unit is provided with a spiral conveying pipe fitting. The spiral conveying pipe fitting is arranged around the inner cylinder. The lower end of the spiral conveying pipe fitting is connected to the feeding pipe, and the upper end of the spiral conveying pipe fitting is connected to the upper end of the inner cylinder.

[0010] Preferably, the spiral conveying pipe fitting is provided with a breathable hose. The breathable hose is spirally arranged around the outer side of the inner cylinder. The lower end of the breathable hose is provided with a feeding pipe fitting connected to the feeding pipe. The upper end of the inner cylinder is provided with an inverted funnel. The upper end of the breathable hose is provided with a discharging pipe fitting connected to the funnel.

[0011] Preferably, the spiral conveying pipe fitting is further provided with a braided pipe sleeve. The braided pipe sleeve is arranged around the breathable hose. The inner wall of the material-storing tower is provided with a fixed pipe clamp for fixing the braided pipe sleeve.

[0012] Preferably, the lower conveying unit is provided with a spiral conveying rod. The spiral conveying rod is arranged in the inner cylinder. The upper end of the inner cylinder has an upper bearing seat, and the lower end of the inner cylinder has a lower bearing seat. The spiral conveying rod is rotatably connected between the upper bearing seat and the lower bearing seat.

[0013] Preferably, the lower bearing seat has a fan-shaped opening, and a tool rest is arranged in the fan-shaped opening.

[0014] Preferably, the upper end of the spiral conveying rod is provided with a rotary vane fan. The rotary vane fan corresponds to the upper end of the inner cylinder. The rotary vane fan is connected to the upper bearing seat, and the fan blades on the rotary vane fan are inclined.

[0015] Preferably, a rotary motor is installed on the lower bearing block, and the lower end of the screw conveying rod is connected to the output end of the rotary motor.

[0016] Preferably, upper and lower fixing seats are respectively provided at the upper and lower ends of the upper sandwich layer of the inner cylinder. The microwave heating element is fixedly installed between the upper and lower fixing seats. Notches communicating with the sandwich layer are provided on both the outer wall and the inner wall of the inner cylinder. A grille plate is installed at the notch of the outer wall of the inner cylinder, and a filter cloth is installed at the notch of the inner wall of the inner cylinder.

[0017] The present invention also provides a production process for producing solidified soil, including the following steps:

[0018] S1, pressing the slurry into a mud cake through a filter press;

[0019] S2, putting the mud cake into a vibrating feeder, initially crushing it into mud slag by vibrating screening, and adding quicklime to it;

[0020] S3, introducing the mud slag into a stuffy material tower through a material pump, and completing dehydration under the action of the microwave heating element;

[0021] S4, sending the mud slag with the moisture content reaching the requirement into a crusher for further crushing;

[0022] S5, sending the crushed mud slag into a solidified soil mixer, and adding lime, cement and a liquid stabilizer to the mud slag to produce solidified soil.

[0023] The beneficial effects of the present application compared with the prior art are as follows:

[0024] 1. By means of the upper flow conveying unit and the lower flow conveying unit to convey the mud slag up and down in the stuffy material tower, the heating of the mud slag by the microwave heating element can achieve a better effect. Compared with the traditional stuffy material method, the dehydration step is reduced, the dehydration efficiency is improved, and the dehydration rate of the mud slag when discharged from the stuffy material tower is maintained in a qualified state, which is beneficial to the formation of solidified soil.

[0025] 2. By arranging the screw conveying pipe around the inner cylinder, the mud slag can come into contact with heat in a larger range during the conveying process, and the time in the stuffy space is also longer, realizing effective dehydration of the mud slag, ensuring that the mud slag reaches a qualified dehydration rate when discharged, and improving the dehydration effect of the mud slag.

[0026] 3. The present invention forms the spiral conveying pipe fitting in a form that surrounds the inner cylinder through the breathable hose, so that the sludge is conveyed upward in a spiral form when being conveyed, which increases the contact time between the sludge and heat, ensures that the moisture in the sludge can be dissipated from the breathable hose in the form of water vapor, realizes the outward dissipation of the water vapor generated during the dehydration of the sludge, avoids the situation that the water vapor adheres to the pipe wall and affects the dehydration of the sludge, and keeps the moisture content in the sludge in a qualified state. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic three-dimensional structure diagram of a complete set of equipment for producing solidified soil;

[0028] Figure 2 is a cross-sectional view of a complete set of equipment for producing solidified soil;

[0029] Figure 3 is a schematic three-dimensional structure cross-sectional view of a complete set of equipment for producing solidified soil;

[0030] Figure 4 is a schematic three-dimensional structure diagram of the inner cylinder, the upstream conveying unit and the downstream conveying unit of a complete set of equipment for producing solidified soil;

[0031] Figure 5 is a schematic exploded three-dimensional structure diagram of the inner cylinder, the upstream conveying unit and the downstream conveying unit of a complete set of equipment for producing solidified soil;

[0032] Figure 6 is a front view of the inner cylinder, the upstream conveying unit and the downstream conveying unit of a complete set of equipment for producing solidified soil;

[0033] Figure 7 is a cross-sectional view of the inner cylinder, the upstream conveying unit and the downstream conveying unit of a complete set of equipment for producing solidified soil;

[0034] Figure 8 is a schematic three-dimensional structure cross-sectional view of the inner cylinder, the upstream conveying unit and the downstream conveying unit of a complete set of equipment for producing solidified soil;

[0035] Figure 9 is a schematic three-dimensional structure diagram of the spiral conveying pipe fitting of a complete set of equipment for producing solidified soil;

[0036] Figure 10 is a schematic three-dimensional structure diagram of the inner cylinder and the spiral conveying rod of a complete set of equipment for producing solidified soil.

[0037] The reference numerals in the drawings are:

[0038] 1 - vibrating feeder;

[0039] 2 - material-sealing tower; 21 - feed inlet; 22 - discharge outlet; 23 - stuffy space;

[0040] 3 - Feed pipe;

[0041] 4 - Microwave heating element;

[0042] 5 - Inner cylinder;

[0043] 51 - Interlayer; 511 - Upper fixing seat; 512 - Lower fixing seat;

[0044] 52 - Grille plate;

[0045] 53 - Filter cloth;

[0046] 6 - Up - flow conveying unit;

[0047] 61 - Screw conveying pipe fitting; 611 - Permeable hose; 612 - Braided pipe sleeve; 613 - Fixed pipe clamp;

[0048] 62 - Feed pipe fitting;

[0049] 63 - Hopper;

[0050] 64 - Discharge pipe fitting;

[0051] 7 - Down - flow conveying unit;

[0052] 71 - Screw conveying rod;

[0053] 72 - Upper bearing seat; 721 - Rotary vane fan;

[0054] 73 - Lower bearing seat; 731 - Sector - shaped opening; 732 - Tool rest; 733 - Rotary motor. Detailed implementation manners

[0055] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0056] See Figures 1 - 10 As shown, a complete set of equipment for producing solidified soil includes a vibrating feeder 1 and a material - storing tower 2. A feed pipe 3 is connected between the vibrating feeder 1 and the material - storing tower 2. The material - storing tower 2 is provided with a feed inlet 21 for connecting the feed pipe 3 and a discharge outlet 22 for discharging mud residue. A microwave heating element 4 is also provided inside the material - storing tower 2. An inner cylinder 5 is coaxially and fixedly arranged in the material - storing tower 2. The inner cylinder 5 has an interlayer 51, and the microwave heating element 4 is installed in the interlayer 51. A stuffy and hot space 23 for dewatering the mud residue is formed between the inner cylinder 5 and the material - storing tower 2. An up - flow conveying unit 6 for conveying the mud residue from bottom to top is provided between the upper end of the inner cylinder 5 and the feed pipe 3 in the stuffy and hot space 23. A down - flow conveying unit 7 for conveying the mud residue from top to bottom is provided inside the inner cylinder 5.

[0057] When producing solidified soil, first, the waste slurry generated during the drilling process of bored cast-in-place piles is dehydrated by a filter press and pressed into mud cakes. The water content of the mud cakes after filtration is generally about 40%, while the water content of the silty construction waste generated during the excavation of building foundations is generally about 50%. Neither of them can be directly used to produce solidified soil. At this time, the mud cakes are put into the vibrating feeder 1, and the large clumps of mud cakes are broken in the form of a vibrating screen by the vibrating feeder 1. About 3% of quicklime is added to the mud and slag, and the mud and slag are transported through the feeding pipe 3 by the feed pump. Then the mud and slag enter the material-storing tower 2 for further dehydration. The mud and slag are transported upward along the upstream conveying unit 6 around the inner cylinder 5 from bottom to top to the upper end of the inner cylinder 5, and then the mud and slag fall into it from the upper end of the inner cylinder 5. With the transportation of the mud and slag by the downstream conveying unit 7, the mud and slag fall from top to bottom to the lower end of the inner cylinder 5 again. During the transportation of the mud and slag in the stuffy space 23 and the inner cylinder 5, since there is a microwave heating element 4 in the interlayer 51 of the inner cylinder 5, therefore, under the action of the microwave heating element 4, the heat emitted dehydrates the mud and slag, causing the water content of the mud and slag after being sent out from the material-storing tower 2 to be reduced to about 25%. The mud and slag are pumped into a crusher for further crushing, and then the crushed mud and slag are pumped into a solidified soil mixer, and lime, cement, liquid stabilizer, etc. are added to it, and finally solidified soil is produced.

[0058] See Figures 4 - 8 As shown, the upstream conveying unit 6 is provided with a spiral conveying pipe fitting 61. The spiral conveying pipe fitting 61 is arranged around the inner cylinder 5. The lower end of the spiral conveying pipe fitting 61 is connected to the feeding pipe 3, and the upper end of the spiral conveying pipe fitting 61 is connected to the upper end of the inner cylinder 5.

[0059] When the mud and slag are conveyed along the spiral conveying pipe fitting 61, since the spiral conveying pipe fitting 61 is arranged around the inner cylinder 5, therefore, the mud and slag will gradually flow upward in a spiral form during the conveying process. The contact area between the spiral conveying pipe fitting 61 and the heat emitted by the microwave heating element 4 is relatively large, which also promotes the longer contact time between the mud and slag and the heat in the spiral conveying pipe fitting 61. When the mud and slag are conveyed upward along the spiral conveying pipe fitting 61, they will also enter the inner cylinder 5 and be conveyed downward again, so that during the conveying process of the mud and slag, until they are discharged through the discharge port 22, the water content is ensured to reach the qualified range.

[0060] See Figure 8 and Figure 9 As shown, the spiral conveying pipe fitting 61 is provided with a breathable hose 611. The breathable hose 611 is arranged around the outer side of the inner cylinder 5 in a spiral form. The lower end of the breathable hose 611 is provided with a feeding pipe fitting 62 connected to the feeding pipe 3. The upper end of the inner cylinder 5 is provided with an inverted funnel 63, and the upper end of the breathable hose 611 is provided with a discharge pipe fitting 64 connected to the funnel 63.

[0061] When the sludge is pumped into the spiral conveying pipe fitting 61 by the conveying pipe 3 and enters the spiral conveying pipe fitting 61 through the connection of the feeding pipe fitting 62, and the spiral conveying pipe fitting 61 is connected to the funnel 63 through the discharging pipe fitting 64, the sludge can enter the inner cylinder 5. Since the spiral conveying pipe fitting 61 is formed by surrounding the inner cylinder 5 through the air-permeable hose 611, when the sludge is conveyed in the air-permeable hose 611, the sludge is heated and dehydrated in the stuffy space 23, and the water vapor generated during the dehydration of the sludge permeates through the air-permeable hose 611 and dissipates, and the sludge is gradually dried, and the water vapor drifts upward in the stuffy material tower 2.

[0062] See Figure 8 and Figure 9 As shown, the spiral conveying pipe fitting 61 is further provided with a braided pipe sleeve 612, the braided pipe sleeve 612 surrounds the air-permeable hose 611, and the inner wall of the stuffy material tower 2 is provided with a fixing pipe clamp 613 for fixing the braided pipe sleeve 612.

[0063] When the sludge is conveyed in the air-permeable hose 611, since the air-permeable hose 611 is made of flexible material, in order to prevent the air-permeable hose 611 from deforming and collapsing during the sludge conveyance, the air-permeable hose 611 is wrapped by the braided pipe sleeve 612 to support the air-permeable hose 611 and prevent it from being broken due to excessive pressure from the sludge. Then, the braided pipe sleeve 612 is fixed in the stuffy material tower 2 through the fixing pipe clamp 613 to stabilize the arrangement of the air-permeable hose 611 surrounding the inner cylinder 5. And since the braided pipe sleeve 612 is of a braided structure, it does not prevent the water vapor from dissipating.

[0064] See Figure 7 and Figure 8 As shown, the downstream conveying unit 7 is provided with a spiral conveying rod 71, the spiral conveying rod 71 is arranged in the inner cylinder 5, the upper end of the inner cylinder 5 has an upper bearing seat 72, the lower end of the inner cylinder 5 has a lower bearing seat 73, and the spiral conveying rod 71 is rotatably connected between the upper bearing seat 72 and the lower bearing seat 73.

[0065] After the sludge enters the inner cylinder 5, the spiral conveying rod 71 starts to rotate between the upper bearing seat 72 and the lower bearing seat 73, driving the sludge to be conveyed downward along the inner cylinder 5 until the sludge is discharged from the discharge port 22 of the stuffy material tower 2. When the sludge is conveyed in the inner cylinder 5, the microwave heating element 4 also heats the inner cylinder 5, promoting the sludge to be heated again during the downward conveyance to further dehydrate, ensuring that the dehydration rate of the sludge remains in a qualified state when it is discharged.

[0066] See Figure 8 As shown, the lower bearing seat 73 has a fan-shaped opening 731, and a tool rest 732 is arranged in the fan-shaped opening 731.

[0067] After the sludge falls out from the lower end of the inner cylinder 5, the sludge drops onto the tool rest 732 on the lower bearing seat 73. Due to the gravitational force of the sludge, after the sludge lands on the tool rest 732, it is broken up and falls out from the fan-shaped opening 731. Since the sludge may agglomerate during the conveying process, the sludge falling on the tool rest 732 can be dispersed, which is convenient for subsequent further crushing of the sludge, improving the crushing effect and efficiency.

[0068] See Figure 8 As shown, a rotary vane fan 721 is provided at the upper end of the spiral conveying rod member 71. The rotary vane fan 721 corresponds to the upper end of the inner cylinder 5. The rotary vane fan 721 is connected to the upper bearing seat 72, and the fan blades on the rotary vane fan 721 are inclined.

[0069] When the spiral conveying rod member 71 is started, since the rotary vane fan 721 is provided at the upper end of the spiral conveying rod, and the fan blades of the rotary vane fan 721 are in an inclined state, and the fan is also facing the hopper opening of the funnel 63, therefore, after the sludge is discharged from the discharge pipe fitting 64, the sludge lands on the rotary vane fan 721. The sludge falls into the inner cylinder 5 through the gaps between the adjacent fan blades on the rotary vane fan 721. And when the sludge lands on the fan blades, it drives the fan blades to deflect, thus promoting the rotation of the rotary vane fan 721 and driving the spiral conveying rod member 71 to rotate together to complete the conveying of the sludge.

[0070] See Figure 7 As shown, a rotary motor 733 is installed on the lower bearing seat 73. The lower end of the spiral conveying rod member 71 is connected to the output end of the rotary motor 733.

[0071] When the spiral conveying rod member 71 is started, the spiral conveying rod member 71 is driven to rotate by the rotary motor 733 to complete the conveying of the sludge.

[0072] See Figure 8 As shown, upper fixing seats 511 and lower fixing seats 512 are respectively provided at the upper and lower ends of the sandwich layer 51 on the inner cylinder 5. The microwave heating element 4 is fixedly installed between the upper fixing seat 511 and the lower fixing seat 512. There are notches on both the outer wall and the inner wall of the inner cylinder 5 that communicate with the sandwich layer 51. A grille plate 52 is installed at the notch on the outer wall of the inner cylinder 5, and a filter cloth 53 is installed at the notch on the inner wall of the inner cylinder 5.

[0073] When the microwave heating element 4 emits heat, since the outer wall and the inner wall of the inner cylinder 5 are respectively provided with the grille plate 52 and the filter cloth 53, therefore, the heat will enter the stuffy space 23 through the sandwich layer 51 and pass through the grille plate 52 to heat the sludge, and the heat will also heat the sludge in the inner cylinder 5 through the filter cloth 53. Due to the blocking of the filter cloth 53 on the sludge, the sludge will not enter the sandwich layer 51, and the water vapor will be emitted through the filter cloth 53, which not only heats the sludge but also does not damage the function of the microwave heating element 4.

[0074] A production process for producing solidified soil, comprising the following steps:

[0075] S1, pressing the slurry into a mud cake through a filter press;

[0076] S2, putting the mud cake into a vibrating feeder 1, initially crushing it into mud residues by vibrating sieve, and adding quicklime thereto;

[0077] S3, introducing the mud residues into a material-sealing tower 2 through a material pump, and completing dehydration under the action of a microwave heating element 4;

[0078] S4, feeding the mud residues with the moisture content reaching the requirement into a crusher for further crushing;

[0079] S5, feeding the crushed mud residues into a solidified soil mixer, and adding lime, cement and a liquid stabilizer to the mud residues to produce solidified soil.

[0080] In the present invention, the upstream conveying unit 6 and the downstream conveying unit 7 convey the mud residues up and down in the material-sealing tower 2, so that the heating of the mud residues by the microwave heating element 4 can achieve a better effect. Compared with the traditional material-sealing method, the dehydration step is reduced, the dehydration efficiency is improved, and the dehydration rate of the mud residues when discharged from the material-sealing tower 2 is maintained in a qualified state, which is beneficial to the formation of solidified soil.

[0081] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A complete set of equipment for producing solidified soil, including a vibrating feeder (1) and a material storage tower (2). A feeding pipe (3) is connected between the vibrating feeder (1) and the material storage tower (2). The material storage tower (2) is provided with a feeding port (21) for connecting the feeding pipe (3) and a discharging port (22) for discharging mud and slag. A microwave heating element (4) is also arranged inside the material storage tower (2). It is characterized in that An inner cylinder (5) is coaxially and fixedly arranged in the material storage tower (2). The inner cylinder (5) has an interlayer (51). The microwave heating element (4) is installed in the interlayer (51). A stuffy and hot space (23) for dehydrating the mud and slag is formed between the inner cylinder (5) and the material storage tower (2). An upward flow conveying unit (6) for conveying the mud and slag from bottom to top is arranged between the upper end of the inner cylinder (5) and the feeding pipe (3) in the stuffy and hot space (23). A downward flow conveying unit (7) for conveying the mud and slag from top to bottom is arranged in the inner cylinder (5). The upward flow conveying unit (6) is provided with a spiral conveying pipe fitting (61). The spiral conveying pipe fitting (61) is arranged around the inner cylinder (5). The lower end of the spiral conveying pipe fitting (61) is connected to the feeding pipe (3), and the upper end of the spiral conveying pipe fitting (61) is connected to the upper end of the inner cylinder (5). The spiral conveying pipe fitting (61) is provided with a breathable hose (611). The breathable hose (611) is spirally arranged around the outer side of the inner cylinder (5). The lower end of the breathable hose (611) is provided with a feeding pipe fitting (62) connected to the feeding pipe (3). The upper end of the inner cylinder (5) is provided with an inverted funnel (63). The upper end of the breathable hose (611) is provided with a discharging pipe fitting (64) connected to the funnel (63).

2. The complete set of equipment for producing solidified soil according to claim 1, characterized in that, The spiral conveying pipe fitting (61) is also provided with a braided tube sleeve (612). The braided tube sleeve (612) is arranged around the breathable hose (611). The inner wall of the material storage tower (2) is provided with a fixed pipe clamp (613) for fixing the braided tube sleeve (612).

3. The complete set of equipment for producing solidified soil according to claim 1, characterized in that, The downward flow conveying unit (7) is provided with a spiral conveying rod (71). The spiral conveying rod (71) is arranged in the inner cylinder (5). The upper end of the inner cylinder (5) has an upper bearing seat (72), and the lower end of the inner cylinder (5) has a lower bearing seat (73). The spiral conveying rod (71) is rotatably connected between the upper bearing seat (72) and the lower bearing seat (73).

4. A complete set of equipment for producing solidified soil according to claim 3, characterized in that, The lower bearing seat (73) has a fan-shaped opening (731), and a tool rest (732) is arranged in the fan-shaped opening (731).

5. A complete set of equipment for producing solidified soil according to any one of claims 1-4, characterized in that, The upper end of the spiral conveying rod (71) is provided with a rotary vane fan (721). The rotary vane fan (721) corresponds to the upper end of the inner cylinder (5). The rotary vane fan (721) is connected to the upper bearing seat (72), and the fan blades on the rotary vane fan (721) are inclined.

6. A complete set of equipment for producing solidified soil according to any one of claims 1-4, characterized in that, A rotary motor (733) is installed on the lower bearing seat (73). The lower end of the spiral conveying rod (71) is connected to the output end of the rotary motor (733).

7. A complete set of equipment for producing solidified soil according to claim 1, characterized in that, Upper and lower ends of the upper sandwich layer (51) of the inner cylinder (5) are respectively provided with an upper fixing seat (511) and a lower fixing seat (512). The microwave heating element (4) is fixedly installed between the upper fixing seat (511) and the lower fixing seat (512). Both the outer wall and the inner wall of the inner cylinder (5) have notches communicating with the sandwich layer (51). A grille plate (52) is installed at the notch of the outer wall of the inner cylinder (5), and a filter cloth (53) is installed at the notch of the inner wall of the inner cylinder (5).

8. A production process for producing solidified soil, which is applied to a complete set of equipment for producing solidified soil described in any one of claims 1-7, characterized in that, It includes the following steps: S1, pressing the slurry into a mud cake through a filter press; S2, putting the mud cake into the vibrating feeder (1), initially crushing it into mud residues by vibrating screening, and adding quicklime thereto; S3, introducing the mud residues into the material-sealing tower (2) through a feed pump, and completing dehydration under the action of the microwave heating element (4); S4, feeding the mud residues with the moisture content reaching the requirement into a crusher for further crushing; S5, feeding the crushed mud residues into a solidified soil mixer, and adding lime, cement and a liquid stabilizer to the mud residues to produce solidified soil.

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