A kind of mobile solidified soil mixing equipment and mixing method

Abstract

The invention discloses a mobile solidified soil mixing equipment and a mixing method. The equipment comprises a mixing chamber, a lifting plate is built in the mixing chamber, an injection cylinder is arranged on the top surface of the lifting plate, the injection cylinder is connected to a pulping mechanism, a plurality of raking cylinders are hingedly connected to the inner walls on both sides of the mixing chamber, the output ends of the raking cylinders on the same side are connected to the raking plates, half tooth grooves are symmetrically opened on the inner walls on both ends of the mixing chamber, the half tooth grooves are meshed with the shaft end gears of the leakage cylinder, the cylinder neck with holes of the leakage cylinder is hingedly connected to push the tail of the piston tube B in the cylinder, the push cylinder is connected to the water injection mechanism, the spiral shaft in the mixing chamber faces the outlet of the mixing chamber, and the inlet of the mixing chamber cooperates with the output end of the ingredient screening and feeding mechanism; the method comprises the steps of clay particle screening and feeding, aggregate mixing and feeding, pulping premixing, and soil making and mixing. The invention premixes ingredients such as water, clay particles, aggregates, and curing agent in the solidified soil in multiple stages, and then puts them into the mixing chamber in batches for kneading and mixing, so that the mixing between the ingredients is more uniform, which greatly improves the production quality and efficiency of the solidified soil.

Description

Technical Field

[0001] The invention relates to the technical field of solidified soil production equipment, and in particular to a mobile solidified soil mixing equipment and a mixing method. Background Art

[0002] Flowable solidified soil is a new material transformed from ordinary soil such as silt and engineering waste soil, which has excellent stability and fluidity. Its construction principle is to inject the flowable solidified soil into the middle of the soil, mix it with the soil to form a solid structure, and then quickly form a high-strength soil body. It has been widely used in foundation reinforcement, environmental protection geotechnical engineering, road engineering and other fields, and has broad market prospects. When producing flowable solidified soil, various aggregates such as slag, gravel, coarse sand, etc. need to be mixed with screened soil clay, water and curing agent. Some of the raw materials need to be pre-mixed and processed in advance. This process is usually carried out manually, which is very time-consuming and labor-intensive, and it is difficult to ensure the mixing quality. In the final full mixing, due to the high viscosity of the solidified soil, it is difficult to mix the ingredients evenly using the traditional stirring method, which often results in the solidified soil produced not meeting the quality standards. A new type of production equipment and method is needed to solve the above problems. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a mobile solidified soil mixing equipment, including a mixing chamber, a lifting plate is built in the mixing chamber, and a plurality of injection cylinders are arranged on the top surface of the lifting plate. The piston tube A in the injection cylinder is inserted into the slurry discharge pipe of the slurry making mechanism, and a plurality of raking cylinders are hingedly connected to the inner walls of the mixing chamber on both sides, and the output ends of the raking cylinders on the same side are connected to the raking plates. Half tooth grooves are symmetrically opened on the walls at both ends of the mixing chamber, and the half tooth grooves are meshed with the shaft end gears of the leakage cylinder. The neck of the leakage cylinder with holes is hingedly connected to push the tail of the piston tube B in the cylinder, and the cylinder body is connected to the water injection mechanism. The spiral shaft in the mixing chamber faces the outlet of the mixing chamber, and the inlet of the mixing chamber cooperates with the output end of the ingredient screening and conveying mechanism.

[0004] Furthermore, the pulping mechanism includes a storage tank, the bottom outlet of the storage tank is connected to the top of the pulping chamber through a spiral conveying pipe A, a number of stirring shafts are rotatably connected in the pulping chamber, the gear at the end of the stirring shaft is meshed with the gear of the transmission shaft body in the transmission box, the pulley at the end of the transmission shaft is connected to the pulley at the output end of the stirring motor through a belt, the top of the pulping chamber is connected to the output end of the water pump A, the lower side of the pulping chamber is connected to the feed pipe of the feed pump, the feed pipe of the feed pump is connected to the distribution cylinder, the spring switch at the top of the distribution cylinder is connected to the corresponding pulp discharge pipe head, and the pulp discharge pipe head is connected to the top surface of the injection cylinder.

[0005] Furthermore, the inner cavity wall of the injection cylinder is slidably connected to the body of the piston tube A, and the upper and lower ends of the inner cavity are connected to two air pipes through a cavity, and the two air pipes are connected to the corresponding cylinder chambers of the gas distribution cylinder. Both cylinder chambers are connected to the air pump through independent intake valves, and both cylinder chambers have independent exhaust valves.

[0006] Furthermore, the water injection mechanism includes a water pump B, the input end of the water pump B is connected to the filter, the filter is placed in the water tank, the output end of the water pump B is connected to the water distribution cylinder, the top of the water distribution cylinder is connected to the top valve and the tail valve of the corresponding pushing cylinder through several pairs of water pipes, the tail valve is provided with a drain port, the inner cavity wall of the pushing cylinder is slidingly connected to the push plate at the head of the piston tube B, the central through hole of the push plate is slidingly connected to the small valve seat plate, the large valve seat plate is slidingly connected to the expanded hole wall of the piston tube B, a pressure spring is provided between the large plate and the opposite surface of the expanded hole, and a channel is opened on the surface of the large plate.

[0007] Furthermore, the ingredient screening and conveying mechanism includes a soil screening frame, which is provided with two layers of screen buckets. The output end of the upper screen bucket is located above the opening of the corresponding lower screen bucket, and the output end of the lower screen bucket is located above the input end of the conveyor belt. Several layers of screen plates are provided at the opening of the screen bucket, and an exciter is provided on the outside of the screen bucket. The hinge arms of the gate plates are hinged on both sides of the screen bucket, and the pull rod at the bottom of the gate plate is hinged to the output end of the opening and closing cylinder. A primary mixing bucket is provided on one side of the conveyor belt, and the bottom outlet of the primary mixing bucket is connected to the spiral conveying pipe B, and the output port of the spiral conveying pipe B is located above the conveyor belt. The primary mixing bucket is built with several stirring rods, and the ends of the stirring rods are connected to the driving motor. The output end of the conveyor belt is located above the slope plate at the entrance of the mixing chamber.

[0008] Furthermore, the end of the spiral shaft extends into a driving box on the outer end wall of the mixing chamber, and the output shaft of the mixing motor is rotated in the driving box. The output shaft body gear is meshed with the gear at the end of the spiral shaft. The spiral blades of the spiral shaft are located in a feed trough opened on the bottom surface of the mixing chamber, and the feed trough leads to the outlet of the mixing chamber.

[0009] Furthermore, a vertical convex groove is opened above the outlet of the mixing chamber, the convex groove is slidably connected to the head of the screw, the screw rod passes through the through hole above the baffle and is fastened by a nut, the lower side of the baffle is connected to a discharge shovel, and a slider is provided on the back side of the bottom bracket of the discharge shovel. The slider is slidably connected to the vertical groove on the lifting column on the bottom surface of the mixing chamber, and the vertical screw is rotatably connected in the vertical groove. The vertical screw is threadedly connected to the slider, and the gear at the bottom end of the vertical screw is meshed with the gear at the output end of the control motor.

[0010] Furthermore, the hinge columns on both sides of the rake cylinder body are hinged to the hinge seats on the inner wall of the mixing chamber, the end faces of the hinge columns are provided with internal splines, the internal splines cooperate with the external splines at the end of the drive shaft, the outer drive shaft passes through the mixing chamber to connect the rake motor, and the rake plate surface is provided with a plurality of holes.

[0011] Furthermore, the screw holes at the four corners of the lifting plate are threadedly connected to the lifting screw, the lifting screw is vertically rotatably connected to the mixing chamber, the upper end of the lifting screw is connected to the lifting motor at the top of the mixing chamber, the side of the lifting plate is in contact with the inner wall of the mixing chamber, when the lifting plate is at the upper dead point, it is higher than the entrance of the mixing chamber, and when the lifting plate is at the lower dead point, it is lower than the entrance of the mixing chamber.

[0012] The present invention also provides a stirring method of the stirring device, comprising the following steps:

[0013] Clay screening: Put the engineering waste soil onto the sieve plate of the upper sieve bucket, the aperture of which is 4.5-5mm, start the vibrator to coarsely screen the soil for 8-12 minutes, open the gate at the bottom of the upper sieve bucket, and let the clay particles of the waste soil fall into the lower sieve bucket, the aperture of which is 2-2.5mm, start the vibrator to finely screen the soil for 15-18 minutes, open the gate at the bottom of the lower sieve bucket, and let the screened clay particles fall onto the conveyor belt;

[0014] Aggregate mixing: put three types of aggregates, namely, coarse sand with a particle size of 0.5-0.8mm, ceramsite with a particle size of 3-4mm, and crushed stone with a particle size of 5-8mm, into the primary mixing bucket at a mass ratio of 4.5-5:2.5-4:8-10, and the mass ratio of the three types of aggregates to clay is 0.7-0.8:1. Start each drive motor to mix the aggregate for 8-12 minutes, and convey the aggregate to the conveyor belt through the spiral conveyor pipe B to merge with the clay;

[0015] Pulping premixing: transport the curing agent from the storage tank to the pulping room through the spiral conveying pipe A, start the water pump A to pump water from the water tank into the pulping room to mix with the curing agent, the water-to-water mass ratio is 1:4-5, start the stirring motor to premix the curing agent solution for 5-8 minutes;

[0016] Soil making and mixing: put the aggregate clay mixture accounting for 60-65% of the pre-input mass of each batch into the mixing chamber, start the rake motor, make each rake cylinder rotate from a vertical state to a horizontal state, the lifting plate is driven by the lifting motor to drop below the inlet, shrink the output end of the rake cylinder, rake the material to both sides through the rake plate, push out the piston tube A through the air pump, insert it into the gap of the raked material, start the feed pump to send the curing agent solution into the slurry discharge pipe through the reed pipe, and finally spray it into the material, the rake cylinder pushes the rake plate to knead the material and the curing agent solution, start the water pump B to pump water into the push cylinder, so that the piston tube B drives the drum to do reciprocating motion, and injects water into the material to mix it during the kneading process. The mixing motor is started to drive the spiral shaft to further stir the material. After 12-15 minutes, the lifting plate is raised, the rake cylinder is reset, and some of the remaining aggregate clay is again added to the inlet. The above process is repeated. The total input amount of curing agent and water accounts for 4-5% and 36-38% of the weight of the solidified soil respectively. The injection amount of water and curing agent solution each time is adjusted according to the input amount of aggregate clay. After all the mixing is completed, the control motor is started to raise the baffle at the outlet, and the mixed solidified soil falls into the carrier below through the discharge shovel.

[0017] The beneficial effects of the present invention are as follows: the double-layer screen bucket in the invention can screen out clay particles of appropriate particle size. After the clay particles are combined with the three aggregates pre-mixed in the primary mixing bucket, they are transported to the mixing chamber in batches, and after being raked loose by the rake plate in the mixing chamber, the mixed curing agent solution in the slurry making mechanism is injected through the lowered injection cylinder, and the reciprocating sieve drum is used to inject water, knead and stir. During the stirring process, various ingredients are mixed more evenly under the combined action of the rake plate, the sieve drum and the spiral shaft, which greatly improves the production quality and efficiency of the solidified soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a front view structural cross-sectional view of the mixing chamber in the present invention;

[0020] Figure 3 It is a right side structural cross-sectional view of the mixing chamber in the present invention;

[0021] Figure 4 It is a top view of the structure of the mixing chamber at the raking cylinder in the present invention;

[0022] Figure 5 It is a top view of the structure of the mixing chamber at the drain tube in the present invention;

[0023] Figure 6 for Figure 5 A partial enlarged view of the middle A area;

[0024] Figure 7 It is a schematic diagram of the internal structure of the pulping chamber in the present invention;

[0025] Figure 8 It is a side view structural schematic diagram of the soil screening frame in the present invention;

[0026] Fig. 9 It is a front view structural schematic diagram of the primary mixing bucket in the present invention.

[0027] The accompanying drawings are described as follows: 1. mixing chamber; 101. half tooth groove; 102. ramp plate; 103. drive box; 104. feed trough; 105. convex groove; 2. lifting plate; 3. injection cylinder; 301. piston tube A; 4. slurry discharge pipe; 5. raking cylinder; 501. internal spline; 6. raking plate; 601. strip hole; 7. drain cylinder; 701. shaft end gear; 8. push cylinder; 801. piston tube B; 802. top valve; 803. tail valve; 804. drain port; 805. push plate; 9. screw shaft; 10. storage tank; 11. screw conveying pipe A; 12. slurry making chamber; 13. stirring shaft; 14. transmission box; 15. transmission shaft; 16. stirring motor; 17. water pump A; 18. feed pump; 19. distribution cylinder; 20. reed pipe; 21. Air pipe; 22, air distribution cylinder; 2201, air inlet valve; 2202, exhaust valve; 23, air pump; 24, water pump B; 25, filter; 26, water tank; 27, water distribution cylinder; 28, water pipe; 29, pressure spring; 30, soil screening rack; 31, screening bucket; 32, conveyor belt; 33, sieve plate; 34, vibrator; 35, gate; 36, opening and closing cylinder; 37, primary mixing bucket; 38, spiral conveying pipe B; 39, stirring rod; 40, driving motor; 41, mixing motor; 4101, output shaft; 42, baffle; 43, discharge shovel; 4301, slider; 44, lifting column; 4401, vertical slot; 4402, vertical screw; 45, control motor; 46, driving shaft; 47, raking motor; 48, lifting screw; 49, lifting motor; 50, valve seat. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The present invention will be further described below in conjunction with the accompanying drawings:

[0031] like Figures 1 to 9 As shown, a mobile solidified soil mixing equipment includes a mixing chamber 1, a lifting plate 2 is built in the mixing chamber 1, the four corner screw holes of the lifting plate 2 are threadedly connected to the lifting screw 48, the lifting screw 48 is vertically rotatably connected to the mixing chamber 1, the upper end of the lifting screw 48 is connected to the lifting motor 49 on the top of the mixing chamber 1, the side of the lifting plate 2 is in contact with the inner wall surface of the mixing chamber 1, when the lifting plate 2 is at the upper dead point, it is higher than the entrance of the mixing chamber 1, and when the lifting plate 2 is at the lower dead point, it is lower than the entrance of the mixing chamber 1.

[0032] In this embodiment, a plurality of injection cylinders 3 are provided on the top surface of the lifting plate 2, and a slurry discharge pipe 4 of the slurry making mechanism is inserted into the piston tube A301 in the injection cylinder 3 (i.e., a vertical sliding connection). The slurry making mechanism includes a storage tank 10, and the bottom outlet of the storage tank 10 is connected to the top of the slurry making chamber 12 through a spiral conveying pipe A11. A plurality of stirring shafts 13 are rotatably connected in the slurry making chamber 12, and the gear at the end of the stirring shaft 13 is meshed with the gear of the shaft body of the transmission shaft 15 in the transmission box 14. The wheel at the end of the transmission shaft 15 is connected to the output end wheel of the stirring motor 16 through a belt. The top of the slurry making chamber 12 is connected to the output end of the water pump A17, and the input end of the water pump A17 is connected to the filter 25. The filter 25 is placed in the water tank 26. The lower side of the slurry making chamber 12 is connected to the feed pipe of the feed pump 18, and the discharge pipe of the feed pump 18 is connected to the distribution cylinder 19. The spring switch 20 at the top of the distribution cylinder 19 is connected to the corresponding head of the slurry discharge pipe 4, and the head of the slurry discharge pipe 4 is connected to the top surface of the injection cylinder 3. The inner cavity wall of the injection cylinder 3 is slidably connected to the body of the piston tube A301, and the upper and lower ends of the inner cavity are connected to two air pipes 21 through a cavity. The two air pipes 21 are connected to the corresponding cylinder chambers of the gas distribution cylinder 22. The two cylinder chambers are connected to the air pump 23 through independent intake valves 2201. The two cylinder chambers have independent exhaust valves 2202. When it is necessary to push the piston tube A301 disk to move, the intake valve 2201 of the cylinder chamber on one side is closed and the exhaust valve 2202 is opened, and the intake valve 2201 of the cylinder chamber on the other side is opened and the exhaust valve 2202 is closed. When pushing in the opposite direction, the valves open and close in reverse.

[0033] In this embodiment, two pairs of raking cylinders 5 are provided on both side walls of the mixing chamber 1, and the output ends of the raking cylinders 5 on the same side are connected to the raking plates 6, and a plurality of holes 601 are provided on the surface of the raking plates 6. The hinge columns on both sides of the cylinder bodies of the raking cylinders 5 are hinged to the hinge seats on the inner side walls of the mixing chamber 1, and the end faces of the hinge columns are provided with internal splines 501, which cooperate with the external splines at the end of the drive shaft 46, and the outer drive shaft 46 passes through the mixing chamber 1 to connect the raking motor 47. The mixing chamber 1 has half tooth grooves 101 symmetrically formed on the two end walls, which mesh with the shaft end gear 701 of the drain tube 7. The neck of the drain tube 7 with holes is hinged to push the tail of the piston tube B801 in the cylinder 8, and the cylinder body of the cylinder 8 is connected to the water injection mechanism. The water injection mechanism includes a water pump B24, the input end of the water pump B24 is connected to the filter 25, the filter 25 is placed in the water tank 26, the output end of the water pump B24 is connected to the water distribution cylinder 27, and the top of the water distribution cylinder 27 is connected to the water distribution cylinder 27. The top valve 802 and the tail valve 803 of the corresponding pushing cylinder 8 are respectively connected through several pairs of water pipes 28. The tail valve 803 is provided with a drain port 804. The inner cavity wall of the pushing cylinder 8 is slidingly connected with the push plate 805 at the head of the piston tube B801. The central through hole of the push plate 805 is slidingly connected with the small plate of the valve seat 50. The large plate of the valve seat 50 is slidingly connected with the wall surface of the expanded hole of the piston tube B801. A pressure spring 29 is provided between the opposite surfaces of the large plate and the expanded hole, and a channel is opened on the surface of the large plate.

[0034] When it is necessary to push out the piston tube B801, open the top valve 802, adjust the tail valve 803 so that its drain port 804 is connected to the inner cavity of the pushing cylinder 8, start the water pump B24, inject water into the inner cavity of the pushing cylinder 8 through the top valve 802, and the water flow pushes the push plate 805 outward. When a certain pressure is reached, the water flow overcomes the pressure spring 29 and enters the leakage tube 7 through the piston tube B801 to inject liquid; when it is necessary to retract the piston tube B801, close the top valve 802, adjust the tail valve 803 so that the water pipe 28 there is connected to the inner cavity of the pushing cylinder 8 (the drain port 804 is closed), start the water pump B24, inject water into the inner cavity of the pushing cylinder 8 through the tail valve 803, and the water flow pushes the push plate 805 inward. The stored water on the other side is squeezed to push the valve seat 50 to enter the leakage tube 7 to inject liquid.

[0035] In this embodiment, the end of the spiral shaft 9 in the mixing chamber 1 extends into the driving box 103 on the outer end wall of the mixing chamber 1, and the output shaft 4101 connected to the mixing motor 41 is rotated in the driving box 103. The shaft gear of the output shaft 4101 is meshed with the gear at the end of the spiral shaft 9. The spiral blades of the spiral shaft 9 are located in the feeding trough 104 opened on the bottom surface of the mixing chamber 1, and the feeding trough 104 leads to the outlet of the mixing chamber 1. A vertical convex groove 105 is provided above the outlet of the mixing chamber 1. The convex groove 105 is slidably connected to the screw head. The screw rod passes through the through hole above the baffle 42 and is fastened by a nut. The lower side of the baffle 42 is connected to the discharge shovel 43. A slider 4301 is provided on the back side of the bottom bracket of the discharge shovel 43. The slider 4301 is slidably connected to the vertical groove 4401 on the lifting column 44 at the bottom of the mixing chamber 1. The vertical screw 4402 is rotatably connected in the vertical groove 4401. The vertical screw 4402 is threadedly connected to the slider 4301. The gear at the bottom end of the vertical screw 4402 is meshed with the gear at the output end of the control motor 45. When the baffle 42 is lowered, the outlet can be closed; when the baffle 42 is raised, the outlet is connected to the slideway of the discharge shovel 43.

[0036] In this embodiment, the entrance of the mixing chamber 1 cooperates with the output end of the batching screening and conveying mechanism. The batching screening and conveying mechanism includes a soil screening frame 30. The soil screening frame 30 is provided with two layers of screen buckets 31. The output end of the upper screen bucket 31 is located above the opening of the corresponding screen bucket 31 in the lower layer, and the output end of the lower screen bucket 31 is located above the input end of the conveyor belt 32. Several layers of sieve plates 33 are provided at the opening of the screen bucket 31. An exciter 34 is provided on the outside of the screen bucket 31. The hinge arms of the gate plate 35 are hinged on both sides of the screen bucket 31. The bottom pull rod of the gate plate 35 is hinged to the output end of the opening and closing cylinder 36. A primary mixing bucket 37 is provided on one side of the conveyor belt 32. The bottom outlet of the primary mixing bucket 37 is connected to the spiral conveying pipe B38. The output port of the spiral conveying pipe B38 is located above the conveyor belt 32. The primary mixing bucket 37 has several stirring rods 39 built in. The ends of the stirring rods 39 are connected to the driving motor 40. The output end of the conveyor belt 32 is located above the ramp plate 102 at the entrance of the mixing chamber 1.

[0037] The stirring method of the stirring device comprises the following steps:

[0038] Clay screening and delivery: Put the engineering waste soil into the sieve plate 33 of the upper sieve bucket 31, the aperture of the sieve plate 33 is 4.5-5mm, start the vibrator 34 to coarsely screen the soil for 8-12 minutes, open the gate plate 35 at the bottom of the upper sieve bucket 31, so that the clay particles of the waste soil screened out fall into the lower sieve bucket 31, the aperture of the sieve plate 33 is 2-2.5mm, start the vibrator 34 to finely screen the soil for 15-18 minutes, open the gate plate 35 at the bottom of the lower sieve bucket 31, so that the screened clay particles fall onto the conveyor belt 32;

[0039] Aggregate mixing: three types of aggregates, namely, coarse sand with a particle size of 0.5-0.8 mm, ceramsite with a particle size of 3-4 mm, and crushed stone with a particle size of 5-8 mm, are put into the primary mixing bucket 37 at a mass ratio of 4.5-5:2.5-4:8-10, and the mass ratio of the three types of aggregates to clay is 0.7-0.8:1. Each driving motor 40 is started to mix the aggregates for 8-12 minutes, and the aggregates are transported to the conveyor belt 32 through the spiral conveying pipe B38 to merge with the clay;

[0040] Pulping premixing: The curing agent is transported from the storage tank 10 to the pulping chamber 12 through the spiral conveying pipe A11, and the water pump A17 is started to pump water from the water tank 26 into the pulping chamber 12 to mix with the curing agent, and the water-to-water mass ratio is 1:4-5. The stirring motor 16 is started to premix the curing agent solution for 5-8 minutes;

[0041] Soil making and mixing: put the aggregate clay mixture accounting for 60-65% of the pre-input mass of each batch into the mixing chamber 1, start the rake motor 47, make each rake cylinder 5 rotate from a vertical state to a horizontal state, the lifting plate 2 is driven by the lifting motor 49 to drop below the inlet, shrink the output end of the rake cylinder 5, rake the material to both sides through the rake plate 6, push the piston tube A301 through the air pump 23, and insert it into the gap of the raked material, start the feed pump 18 to send the curing agent solution into the slurry discharge pipe 4 through the reed pipe 20, and finally spray it into the material, the rake cylinder 5 pushes the rake plate 6 to knead the material and the curing agent solution, start the water pump B24 to pump water Pump into the push cylinder 8, so that the piston tube B801 drives the leaking cylinder 7 to do reciprocating motion, and inject water into the material to mix during the kneading process, start the mixing motor 41 to drive the screw shaft 9 to further stir the material, and after 12-15 minutes, raise the lifting plate 2, reset the raking cylinder 5, and put some of the remaining aggregate clay into the inlet again, preferably accounting for 10-15% of the pre-input mass, and repeat the above process until all the materials in this batch are delivered. Among them, the total input amount of curing agent and water accounts for 4-5% and 36-38% of the weight of the solidified soil, respectively. The amount of water and curing agent solution injected each time is adjusted according to the input amount of aggregate clay. When all the mixing is completed, start the control motor 45 to raise the baffle 42 at the outlet, and the mixed solidified soil falls into the carrier below through the discharge shovel 43.

[0042] The present invention premixes water, clay, aggregate, curing agent and other ingredients in the solidified soil in multiple stages, and then puts them into the mixing chamber 1 in batches for kneading and stirring, so that the ingredients are mixed more evenly, which greatly improves the production quality and efficiency of the solidified soil.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A fluidized solidified soil mixing device, comprising a mixing chamber (1), characterized in that: The mixing chamber (1) has a built-in lifting plate (2), and a plurality of injection cylinders (3) are provided on the top surface of the lifting plate (2). A discharge pipe (4) of a pulping mechanism is inserted into a piston tube A (301) in the injection cylinder (3). A plurality of raking cylinders (5) are hingedly connected to the two side walls of the mixing chamber (1). The output ends of the raking cylinders (5) on the same side are connected to the raking plates (6). Half tooth grooves (101) are symmetrically opened on the two end walls of the mixing chamber (1). The half tooth grooves (101) are meshed with the shaft end gears (701) of the drain cylinder (7). The neck with holes of the drain cylinder (7) is hingedly connected to the tail of the piston tube B (801) in the push cylinder (8), and the cylinder body of the push cylinder (8) is connected to the water injection mechanism. The spiral shaft (9) in the mixing chamber (1) faces the outlet of the mixing chamber (1), and the inlet of the mixing chamber (1) cooperates with the output end of the batching screening and conveying mechanism.

2. The mobile solidified soil mixing equipment according to claim 1, characterized in that: The inner cavity wall of the injection cylinder (3) is slidably connected to the body of the piston tube A (301); the upper and lower ends of the inner cavity are connected to two air pipes (21) via a cavity; the two air pipes (21) are connected to corresponding cylinder chambers of the gas distribution cylinder (22); the two cylinder chambers are connected to the air pump (23) via independent air inlet valves (2201); and the two cylinder chambers have independent air exhaust valves (2202).

3. The fluidized solidified soil mixing equipment according to claim 2, characterized in that: The water injection mechanism comprises a water pump B (24), the input end of the water pump B (24) is connected to a filter (25), the filter (25) is placed in a water tank (26), the output end of the water pump B (24) is connected to a water distribution cylinder (27), the top of the water distribution cylinder (27) is respectively connected to a top valve (802) and a tail valve (803) of a corresponding push cylinder (8) through a plurality of pairs of water pipes (28), the tail valve (803) is provided with a water discharge port (804), the inner cavity wall of the push cylinder (8) is slidably connected to a push plate (805) at the head of the piston tube B (801), the central through hole of the push plate (805) is slidably connected to a small plate of a valve seat (50), the large plate of the valve seat (50) is slidably connected to the wall surface of the expanded hole of the piston tube B (801), a pressure spring (29) is provided between the large plate and the opposite surface of the expanded hole, and a hole is opened on the surface of the large plate.

4. The fluidized solidified soil mixing equipment according to claim 3, characterized in that: The hinge columns on both sides of the cylinder body of the raking cylinder (5) are hinged to the hinge seats on the inner wall of the mixing chamber (1), and the end faces of the hinge columns are provided with internal splines (501), which cooperate with the external splines at the end of the drive shaft (46). The outer drive shaft (46) passes through the mixing chamber (1) and is connected to the raking motor (47). The surface of the raking plate (6) is provided with a plurality of holes (601).

5. The fluidized solidified soil mixing equipment according to claim 4, characterized in that: The end of the screw shaft (9) extends into a driving box (103) on the outer end wall of the mixing chamber (1), and the output shaft (4101) of the mixing motor (41) is rotatably connected in the driving box (103). The shaft gear of the output shaft (4101) meshes with the gear at the end of the screw shaft (9). The screw blades of the screw shaft (9) are located in a feeding trough (104) provided on the inner bottom surface of the mixing chamber (1), and the feeding trough (104) leads to the outlet of the mixing chamber (1).

6. The mobile solidifying soil mixing equipment according to claim 5, characterized in that: A vertical convex groove (105) is formed above the outlet of the mixing chamber (1), the convex groove (105) is slidably connected to the head of the screw, the rod of the screw passes through the through hole above the baffle (42) and is fastened by a nut, the lower side of the baffle (42) is connected to the discharge shovel (43), the back side of the bottom bracket of the discharge shovel (43) is provided with a slider (4301), the slider (4301) is slidably connected to the vertical groove (4401) on the lifting column (44) at the bottom surface of the mixing chamber (1), the vertical groove (4401) is rotatably connected to the vertical screw (4402), the vertical screw (4402) is threadedly connected to the slider (4301), and the bottom end gear of the vertical screw (4402) is meshed with the output end gear of the control motor (45).

7. The mobile solidifying soil mixing equipment according to claim 6, characterized in that: The four corner screw holes of the lifting plate (2) are threadedly connected to the lifting screw rod (48), the lifting screw rod (48) is vertically rotatably connected to the mixing chamber (1), the upper end of the lifting screw rod (48) is connected to the lifting motor (49) at the top of the mixing chamber (1), the side of the lifting plate (2) is in contact with the inner wall surface of the mixing chamber (1), when the lifting plate (2) is at the upper dead point, it is higher than the entrance of the mixing chamber (1), and when the lifting plate (2) is at the lower dead point, it is lower than the entrance of the mixing chamber (1).

8. The mobile solidifying soil mixing equipment according to claim 7, characterized in that: The batching screening and conveying mechanism comprises a soil screening frame (30), the soil screening frame (30) is provided with two layers of screening buckets (31), the output end of the upper screening bucket (31) is located above the opening of the corresponding lower screening bucket (31), the output end of the lower screening bucket (31) is located above the input end of the conveyor belt (32), a plurality of layers of screening plates (33) are provided at the opening of the screening bucket (31), an exciter (34) is provided on the outside of the screening bucket (31), hinge arms of a gate plate (35) are hingedly connected to both sides of the screening bucket (31), and the bottom of the gate plate (35) is provided with a plurality of screen plates (33). The pull rod is hingedly connected to the output end of the opening and closing cylinder (36), and a primary mixing bucket (37) is provided on one side of the conveyor belt (32). The bottom outlet of the primary mixing bucket (37) is connected to the spiral conveying pipe B (38), and the output port of the spiral conveying pipe B (38) is located above the conveyor belt (32). The primary mixing bucket (37) has a plurality of stirring rods (39) built in, and the ends of the stirring rods (39) are connected to the driving motor (40). The output end of the conveyor belt (32) is located above the ramp plate (102) at the entrance of the mixing chamber (1).

9. The mobile solidifying soil mixing equipment according to claim 8, characterized in that: The pulping mechanism comprises a material storage tank (10), the bottom outlet of the material storage tank (10) is connected to the top of a pulping chamber (12) through a spiral conveying pipe A (11), a plurality of stirring shafts (13) are rotatably connected in the pulping chamber (12), the end gears of the stirring shafts (13) are meshed with the shaft body gears of a transmission shaft (15) in a transmission box (14), the end discs of the transmission shaft (15) are connected to the output end discs of a stirring motor (16) through a belt, the top of the pulping chamber (12) is connected to the output end of a water pump A (17), the lower side of the pulping chamber (12) is connected to the feed pipe of a feed pump (18), the discharge pipe of the feed pump (18) is connected to a distribution cylinder (19), the top spring tube (20) of the distribution cylinder (19) is connected to the head of a corresponding pulp discharge pipe (4), and the head of the pulp discharge pipe (4) is connected to the top surface of a material injection cylinder (3).

10. The stirring method of the stirring device according to claim 9, comprising the following steps: Clay screening and delivery: the engineering waste soil is put into the sieve plate (33) of the upper sieve bucket (31), the aperture of the sieve plate (33) of this layer is 4.5-5 mm, the vibrator (34) is started to coarsely screen the soil for 8-12 minutes, the gate plate (35) at the bottom of the upper sieve bucket (31) is opened, and the clay particles of the waste soil preliminarily screened fall into the lower sieve bucket (31), the aperture of the sieve plate (33) of this layer is 2-2.5 mm, the vibrator (34) is started to finely screen the soil for 15-18 minutes, and the gate plate (35) at the bottom of the lower sieve bucket (31) is opened to allow the screened clay particles to fall onto the conveyor belt (32); Aggregate mixing: three types of aggregates, namely, coarse sand with a particle size of 0.5-0.8 mm, ceramsite with a particle size of 3-4 mm, and crushed stone with a particle size of 5-8 mm, are put into a primary mixing bucket (37) at a mass ratio of 4.5-5:2.5-4:8-10, and the mass ratio of the three types of aggregates to clay is 0.7-0.8:

1. Each driving motor (40) is started to mix the aggregates for 8-12 minutes, and the aggregates are transported to the conveyor belt (32) through the spiral conveying pipe B (38) to merge with the clay; Pulping premixing: the curing agent is transported from the storage tank (10) to the pulping chamber (12) through the spiral conveying pipe A (11), the water pump A (17) is started to pump water from the water tank (26) into the pulping chamber (12) to mix with the curing agent, and the water-to-curing agent mass ratio is 1:4-5, and the stirring motor (16) is started to premix the curing agent solution for 5-8 minutes; Soil making and mixing: an aggregate and clay mixture accounting for 60-65% of the mass of each batch of pre-input is put into the mixing chamber (1), the rake motor (47) is started, and each rake cylinder (5) is rotated from a vertical state to a horizontal state. The lifting plate (2) is driven by the lifting motor (49) to descend below the inlet, and the output end of the rake cylinder (5) is retracted. The material is raked to both sides by the rake plate (6). The piston tube A (301) is pushed out by the air pump (23) so that it is inserted into the gap of the raked material. The feed pump (18) is started to send the curing agent solution into the slurry discharge pipe (4) through the reed pipe (20), and finally sprayed into the material. The rake cylinder (5) pushes the rake plate (6) to knead the material and the curing agent solution. The water pump B (24) is started to pump water into the push pump (18). The piston tube B (801) is driven in the cylinder (8) to drive the cylinder (7) to make a reciprocating motion, and water is injected into the material to mix it during the kneading process. The mixing motor (41) is started to drive the screw shaft (9) to further stir the material. After 12-15 minutes, the lifting plate (2) is raised, the raking cylinder (5) is reset, and part of the remaining aggregate clay particles are again added into the inlet. The above process is repeated. The total amount of curing agent and water added accounts for 4-5% and 36-38% of the weight of the solidified soil, respectively. The amount of water and curing agent solution injected each time is adjusted according to the amount of aggregate clay particles added. After all the mixing is completed, the control motor (45) is started to raise the baffle (42) at the outlet, and the mixed solidified soil falls into the carrier below through the discharge shovel (43).

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