A mineral powder recovery device

Abstract

The present invention provides a mineral powder recovery device, which relates to the field of mineral powder recovery in mixing plants, and comprises: a concrete base; a cement tank is installed at the front left side of the upper end surface of the concrete base, and a secondary dust removal box body is installed at the right rear side of the upper end surface of the concrete base; a powder tank is installed at the front right side of the upper end surface of the concrete base; the present invention can prevent the mineral powder from generating flying dust during the mineral powder recovery and transportation process through the cooperation of a powder conveying pipe, a powder tank, a screw air compressor, a conveying hose, and an air outlet box body, thereby avoiding the occurrence of environmental pollution; the present invention solves the problem that the existing mineral powder recovery devices on the market are generally transported and recovered by a bucket elevator during use, and in the process of the bucket elevator discharging the recovered mineral powder into the cement tank, the mineral powder still generates flying dust during the falling process, which causes environmental pollution.

Description

Technical Field

[0001] The invention relates to the technical field of mineral powder recovery in mixing stations, and in particular to a mineral powder recovery device. Background Art

[0002] At present, in the process of upgrading and maintaining Highway No. 13 in Laos, a large amount of asphalt mixture is needed. In the preparation process of asphalt mixture, according to the composition requirements of asphalt mixture, it must contain 1%-2% filler (mineral powder). If all cement is used, the cost will be too high. Therefore, in order to save construction costs, it is necessary to find another powder to replace it. The staff found that although local materials can be obtained in Laos and replaced by local crushed stone powder in Laos, the local crushed stone powder in Laos can only meet the indicators such as aggregate water absorption, firmness, and polishing value, and it is difficult to meet the physical indicators of granular materials (through the test of local crushed stone powder in Laos, it is found that the screening curve of the produced aggregate is in the range of 0 to 4.75mm, which makes it difficult to meet the indicators of standard mineral powder). Then after the above tests and comprehensive consideration of factors such as cost, it was found that the mineral powder recovery device can be used to recycle the mineral powder materials lost during the mixing process of the mixing station (this part of the mineral powder materials is usually the powder filtered out in the secondary dust removal box) for reuse.

[0003] However, when installing a mineral powder recovery device in a cross-border area such as Laos, it is first necessary to purchase a mineral powder recovery device produced by a manufacturer (and usually it is necessary to purchase a mineral powder recovery device from our domestic manufacturer), and the manufacturer's installation of the device has problems such as a long period of time and affecting the progress of the on-site project; secondly, the existing mineral powder recovery devices on the market are generally transported and recovered by a bucket elevator when in use, and the bucket elevator will still produce flying dust during the falling process of the mineral powder when discharging the recovered mineral powder into the cement tank, resulting in environmental pollution; in addition, during the operation of the elevator in the existing mineral powder recovery device on the market, a large amount of dust is easily attached to the motor casing of the elevator (there is a lot of dust in the air in the mixing station), and it is difficult for people to detect and clean it in time, which affects the heat dissipation effect of the motor casing on the elevator, and then reduces the service life of the motor on the elevator. Summary of the invention

[0004] In view of this, the present invention provides a mineral powder recovery device to solve the problem that the existing mineral powder recovery devices on the market are generally transported and recovered by bucket elevators when in use, and in the process of the bucket elevator discharging the recovered mineral powder into a cement tank, the mineral powder still generates flying dust during the falling process, resulting in environmental pollution.

[0005] The present invention provides a mineral powder recovery device, which specifically comprises: a concrete base; a cement tank is installed at the front left side of the upper end surface of the concrete base, and a secondary dust removal box body is installed at the right rear side of the upper end surface of the concrete base; a powder tank is installed at the front right side of the upper end surface of the concrete base, and a screw air compressor is installed on the upper end surface of the concrete base in front of the powder tank, and the air outlet of the screw air compressor is connected to the air inlet on the powder tank through an air compressor hose; a powder conveying pipe is provided on the upper end surface of the concrete base between the secondary dust removal box body and the powder tank, and a cleaning mechanism is provided at the front end of the powder conveying pipe; a rain shelter is installed on the upper end surface of the concrete base above the powder tank and the screw air compressor, and a wind drive component is installed in the middle of the rear side of the rain shelter.

[0006] Furthermore, two support frames are fixedly installed on the outside of the powder conveying pipe, and a mounting plate is fixedly connected to both ends of the lower part of each support frame; a feed pipe for connecting to the bottom discharge port of the secondary dust removal box is provided at the upper rear part of the powder conveying pipe, and a discharge pipe for connecting to the feed port of the powder tank is provided at the lower front part of the powder conveying pipe; a feed motor is fixedly installed at the front end of the powder conveying pipe, and a spiral rod located inside the powder conveying pipe is fixedly connected to the rear end of the rotating shaft of the feed motor.

[0007] Furthermore, the cleaning mechanism includes a first annular fixing plate, a second annular fixing plate, a guide rod and an annular dust sweeping brush, the first annular fixing plate is fixedly installed at the front end of the powder conveying pipe, and the front side of the first annular fixing plate is fixedly connected to the second annular fixing plate through four guide rods, and the four guide rods are distributed in an annular array between the first annular fixing plate and the second annular fixing plate; an annular dust sweeping brush is slidably connected to the outside of the four guide rods, and the annular dust sweeping brush is located on the outside of the feed motor, and the bristles of the annular dust sweeping brush are in close contact with the outer peripheral surface of the feed motor.

[0008] Furthermore, the wind drive assembly includes a rotating shaft, wind fan blades, a screw nut, a reciprocating screw, a bevel gear A and a bevel gear B. The rotating shaft is rotatably connected to the middle part of the rear side of the awning through a bracket, the wind fan blades are fixedly installed on the outside of the upper end of the rotating shaft, and the bevel gear A is fixedly installed on the lower end of the rotating shaft; the reciprocating screw is rotatably connected to the upper sides of the first annular fixing plate and the second annular fixing plate, and the bevel gear B is fixedly installed at the rear end of the reciprocating screw, and the bevel gear B is meshed with the bevel gear A; the screw nut is fixedly installed in the middle part of the upper side of the annular dust brush, and the screw nut is connected to the spiral groove on the reciprocating screw.

[0009] Furthermore, when the reciprocating screw is in a rotating state, the screw nut moves back and forth with the annular dust sweeping brush.

[0010] Furthermore, it also includes fixing parts, the number of which is four groups, and the four groups of fixing parts are respectively arranged on the upper end surfaces of four mounting plates; the fixing parts include fixing studs, fixing nuts and limiting gears, the number of fixing studs in each group of the fixing parts is four, and each fixing stud is fixedly connected to the upper end of the concrete base; the outside of each fixing stud is connected to a fixing nut by a thread, and a limiting gear is fixedly connected to the bottom of each fixing nut.

[0011] Furthermore, it also includes a locking assembly, the number of which is sixteen, and the sixteen locking assemblies are respectively arranged on the upper end surfaces of four mounting plates; the locking assembly includes a rectangular cylinder, a rectangular sliding block, a tightening block, a sliding rod, a rotating rod and a limit plate, the rectangular cylinder is fixedly mounted on the upper end surface of the mounting plate, and a rectangular sliding block is slidably connected inside the rectangular cylinder, the head end of the rectangular sliding block is provided with a tightening block passing through the head of the rectangular cylinder, and two tightening strips are provided on the head end surface of the tightening block; the tail end of the rectangular sliding block is provided with a sliding rod passing through the tail of the rectangular cylinder, and the outside of the sliding rod is located inside the rectangular cylinder and is sleeved with a spring; the upper end surface of the rectangular sliding block is rotatably connected to the rotating rod, and the upper end surface of the rectangular cylinder is fixedly connected to the limit plate.

[0012] Furthermore, when the locking assembly is in the locking limit state, the two tightening strips on the end surface of the tightening block head are in close contact with the outer peripheral surface of the limit gear.

[0013] Furthermore, the powder tank outlet is connected to a feed hose, and the other end of the feed hose is connected to an air outlet box; the front, rear, left and right end faces of the air outlet box are all fixedly inlaid with filtering non-woven fabrics, and the outlet at the lower end of the air outlet box is connected to the feed port on the right side of the top of the cement tank.

[0014] The mineral powder recovery device provided by the present invention has the following beneficial effects:

[0015] 1. Compared with the factory delivery and installation processes, the present invention reduces the purchase cost of the complete set of mixing station equipment and ensures the installation progress through manual modification, which is conducive to the mixing station being put into use as soon as possible, thereby shortening the cycle, accelerating the efficiency of asphalt mixture mix ratio production and testing work, avoiding affecting the progress of on-site projects, and at the same time being able to recycle the mineral powder materials lost in aggregate mixing, which not only saves the cost of purchasing mineral powder materials for asphalt mixtures, but also protects the environment. The above combined provides a strong guarantee for the control of project costs.

[0016] 2. The present invention can prevent the mineral powder from generating flying dust during the recovery and transportation of the mineral powder through the coordination of the powder conveying pipe, the powder tank, the screw air compressor, the conveying hose and the air outlet box, thereby avoiding the occurrence of environmental pollution.

[0017] 3. The present invention cooperates with the wind drive component and the cleaning mechanism. When there is wind outdoors, the wind can drive the wind fan blades to rotate, and finally drive the annular dust sweeping brush to move back and forth, thereby sweeping away the dust attached to the housing of the feed motor without manual cleaning, thereby avoiding affecting the heat dissipation effect of the housing of the feed motor on the powder conveying pipe, thereby increasing the service life of the feed motor.

[0018] 4. Through the cooperation of the limit gear and the locking assembly, the present invention can achieve effective locking and limiting of the fixed nut after the fixing nut is tightened, through the close contact between the two tightening strips on the end face of the tightening block head and the outer peripheral surface of the limit gear, thereby effectively avoiding the loosening of the fixing nut and greatly improving the stability of the powder conveying pipe during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] In the attached picture:

[0021] Figure 1 It is a schematic diagram of the axial structure of an embodiment of the present invention.

[0022] Figure 2 It is a right view structural schematic diagram of an embodiment of the present invention.

[0023] Figure 3 It is a schematic diagram of the structure of an embodiment of the present invention in a disassembled state.

[0024] Figure 4 It is a schematic diagram of the structure of a powder tank and a screw air compressor according to an embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of a powder conveying pipe, a cleaning mechanism and a wind-driven assembly according to an embodiment of the present invention.

[0026] Figure 6 It is a schematic diagram of the structure of the disassembled feeding motor and cleaning mechanism of an embodiment of the present invention.

[0027] Figure 7 It is a schematic structural diagram of a mounting plate, a fixing member and a locking assembly according to an embodiment of the present invention.

[0028] Reference numerals list

[0029] 1. Concrete base; 2. Cement tank; 3. Secondary dust removal box body; 4. Powder tank; 401. Feed hose; 402. Air outlet box body; 403. Filter non-woven fabric; 5. Screw air compressor; 6. Powder delivery pipe; 601. Support frame; 602. Mounting plate; 603. Feed pipe; 604. Discharge pipe; 605. Feed motor; 7. Cleaning mechanism; 701. First annular fixing plate; 702. Second annular fixing plate; 703. Guide rod; 704. Annular dust brush; 8. Wind drive assembly ;801, rotating shaft; 802, wind fan blade; 803, screw nut; 804, reciprocating screw; 805, bevel gear A; 806, bevel gear B; 9, awning; 10, air compressor hose; 11, fixing part; 1101, fixing stud; 1102, fixing nut; 1103, limit gear; 12, locking assembly; 1201, rectangular cylinder; 1202, rectangular sliding block; 1203, tightening block; 1204, sliding rod; 1205, rotating rod; 1206, limit plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0031] Example 1: Figures 1 to 7 As shown: the present invention provides a mineral powder recovery device, comprising a concrete base 1; a cement tank 2 is installed at the front left side of the upper end surface of the concrete base 1, and a secondary dust removal box body 3 is installed at the right rear side of the upper end surface of the concrete base 1; a powder tank 4 is installed at the front right side of the upper end surface of the concrete base 1, and a screw air compressor 5 is installed on the upper end surface of the concrete base 1 in front of the powder tank 4, and the air outlet of the screw air compressor 5 is connected to the air inlet on the powder tank 4 through an air compressor hose 10; a powder is installed on the upper end surface of the concrete base 1 between the secondary dust removal box body 3 and the powder tank 4 A material conveying pipe 6 is provided, and a cleaning mechanism 7 is provided at the front end of the powder conveying pipe 6; a canopy 9 is installed on the upper end surface of the concrete base 1 above the powder tank 4 and the screw air compressor 5, and a wind drive component 8 is installed in the middle of the rear side of the canopy 9; the discharge port of the powder tank 4 is connected to a conveying hose 401, and the other end of the conveying hose 401 is connected to an air outlet box 402; the front, rear, left and right end surfaces of the air outlet box 402 are fixedly inlaid with filtering non-woven fabrics 403, and the discharge port at the lower end of the air outlet box 402 is connected to the feed port on the right side of the top of the cement tank 2.

[0032] Two support frames 601 are fixedly installed on the outside of the powder conveying pipe 6, and a mounting plate 602 is fixedly connected to both ends of the lower part of each support frame 601; a feed pipe 603 for connecting to the bottom discharge port of the secondary dust removal box body 3 is provided at the upper rear part of the powder conveying pipe 6, and a discharge pipe 604 for connecting to the feed port of the powder tank 4 is provided at the lower front part of the powder conveying pipe 6, and a valve (not shown in the figure) is installed on the discharge pipe 604, which is used to prevent mineral powder from entering the powder conveying pipe 6 when the screw air compressor 5 is operating; a feeding motor 605 is fixedly installed at the front end of the powder conveying pipe 6, and a screw rod located inside the powder conveying pipe 6 is fixedly connected to the rear end of the rotating shaft of the feeding motor 605 for conveying mineral materials.

[0033] The cleaning mechanism 7 includes a first annular fixing plate 701, a second annular fixing plate 702, a guide rod 703 and an annular dust brush 704. The first annular fixing plate 701 is fixedly installed at the front end of the powder conveying pipe 6, and the front side of the first annular fixing plate 701 is fixedly connected to the second annular fixing plate 702 through four guide rods 703, and the four guide rods 703 are distributed in an annular array between the first annular fixing plate 701 and the second annular fixing plate 702; the annular dust brush 704 is slidably connected to the outside of the four guide rods 703, and the annular dust brush 704 is located on the outside of the feeding motor 605, and the bristles of the annular dust brush 704 are in close contact with the outer peripheral surface of the feeding motor 605.

[0034] The wind drive assembly 8 includes a rotating shaft 801, a wind blade 802, a screw nut 803, a reciprocating screw 804, a bevel gear A805 and a bevel gear B806. The rotating shaft 801 is rotatably connected to the middle part of the rear side of the rain shelter 9 through a bracket. The wind blade 802 is fixedly installed on the outer part of the upper end of the rotating shaft 801, and the bevel gear A805 is fixedly installed on the lower end of the rotating shaft 801; the reciprocating screw 804 is rotatably connected to the upper side of the first annular fixing plate 701 and the second annular fixing plate 702, and the bevel gear B806 is fixedly installed on the rear end of the reciprocating screw 804, and the bevel gear B806 is meshed with the bevel gear A805; the screw nut 803 is fixedly installed in the middle part of the upper side of the annular dust brush 704, and the screw nut 803 is connected to the spiral groove on the reciprocating screw 804;

[0035] When the reciprocating screw 804 is in a rotating state, the screw nut 803 moves back and forth with the annular dust brush 704; through the cooperation of the wind drive component 8 and the cleaning mechanism 7, when there is wind outdoors, it can eventually move the annular dust brush 704 back and forth, thereby sweeping away the dust attached to the outer casing of the feed motor 605 without the need for manual cleaning.

[0036] Embodiment 2: Based on embodiment 1, Figure 1 and Figure 7As shown: it also includes a fixing member 11, the number of the fixing members 11 is four groups, and the four groups of fixing members 11 are respectively arranged on the upper end surfaces of the four mounting plates 602; the fixing member 11 includes a fixing stud 1101, a fixing nut 1102 and a limiting gear 1103, the number of the fixing studs 1101 in each group of fixing members 11 is four, and each fixing stud 1101 is fixedly connected to the upper end of the concrete base 1; the outside of each fixing stud 1101 is connected to a fixing nut 1102 by a thread, and the bottom of each fixing nut 1102 is fixedly connected to a limiting gear 1103;

[0037] It also includes a locking assembly 12, the number of which is sixteen, and the sixteen locking assemblies 12 are respectively arranged on the upper end surfaces of the four mounting plates 602; the locking assembly 12 includes a rectangular cylinder 1201, a rectangular sliding block 1202, a tightening block 1203, a sliding rod 1204, a rotating rod 1205 and a limiting plate 1206, the rectangular cylinder 1201 is fixedly mounted on the upper end surface of the mounting plate 602, and the rectangular sliding block 1202 is slidably connected inside the rectangular cylinder 1201, the head end of the rectangular sliding block 1202 is provided with a tightening block 1203 that passes through the head of the rectangular cylinder 1201, and the head end surface of the tightening block 1203 is provided with two tightening strips; the rectangular sliding block 120 2 is provided with a sliding rod 1204 penetrating the rear end of the rectangular cylinder 1201, and the sliding rod 1204 is located outside the rectangular cylinder 1201 and is sleeved with a spring; the upper end surface of the rectangular sliding block 1202 is rotatably connected to the rotating rod 1205, and the upper end surface of the rectangular cylinder 1201 is fixedly connected to the limiting plate 1206; when the locking assembly 12 is in the locking and limiting state, the two tightening strips on the head end surface of the tightening block 1203 are in close contact with the outer peripheral surface of the limiting gear 1103, so that the fixing nut 1102 at this time can obtain an effective locking and limiting effect, thereby effectively avoiding the loosening of the fixing nut 1102 and improving the stability of the powder conveying pipe 6 during operation.

[0038] Specific usage and function of this embodiment: During the construction of this mineral powder recovery device, first, acetylene is used to cut a discharge port at the bottom of the secondary dust removal box body 3, and a flange for connecting with the feed pipe 603 is welded, and then the powder conveying pipe 6 is fixedly installed to the upper end surface of the concrete base 1 through the fixing member 11, and it is located between the secondary dust removal box body 3 and the powder tank 4, and then the feed pipe 603 is connected to the discharge port at the bottom of the secondary dust removal box body 3, and the powder tank 4 is hoisted to the bottom of the discharge pipe 604 of the powder conveying pipe 6 by the vehicle crane, and the feed port at the top of the powder tank 4 is aligned with the discharge pipe 604, and then connected after alignment; then, according to the length of the air compressor hose 10, a suitable position is selected on the concrete base 1 to install the screw air compressor 5, and the air outlet of the screw air compressor 5 is connected to the air inlet on the powder tank 4 through the air compressor hose 10; then the feed hose 401 is connected between the powder tank 4 and the cement tank 2, and the transformation of this mineral powder recovery device is completed.

[0039] When collecting the mineral powder inside the secondary dust removal box body 3, first, the mineral powder inside the secondary dust removal box body 3 will be discharged from the bottom outlet of the secondary dust removal box body 3 into the feed pipe 603, and then the feeding motor 605 will be started, so that the rotating shaft of the feeding motor 605 will drive the spiral rod inside the powder conveying pipe 6 to rotate, thereby conveying the mineral powder entering the feed pipe 603 to the powder tank 4, and then the valve on the discharge pipe 604 will be closed, and the screw air compressor 5 will be started to allow air to enter the powder tank 4. Under the action of air pressure, the mineral powder inside the powder tank 4 will be conveyed to the air outlet box 402 through the feeding hose 401, and finally fall into the cement tank 2, thereby completing the recycling of the mineral powder, and then the asphalt mixture can be mixed and prepared.

[0040] After the mineral powder is recycled by this mineral powder recovery device, according to the construction volume of 78km long asphalt concrete surface layer, compared with purchasing local cement as mineral powder, the cost of purchasing materials for the project is greatly saved; compared with purchasing from domestic manufacturers and installing, this mineral powder recovery device that has been processed and modified by ourselves not only saves the purchase cost of the complete set of equipment, but also saves the installation period.

[0041] When there is wind outdoors, the wind force drives the wind fan blades 802 to rotate, thereby driving the rotating shaft 801, bevel gear A805, bevel gear B806 and reciprocating screw 804 to rotate. Then, when the reciprocating screw 804 rotates, the screw nut 803 will drive the annular dust brush 704 to move back and forth under the action of the spiral groove on the reciprocating screw 804, thereby sweeping away the dust attached to the outer casing of the feed motor 605.

Claims

1. A mineral powder recovery device, comprising: A concrete base (1); a cement tank (2) is installed at the front left side of the upper end surface of the concrete base (1), and a secondary dust removal box body (3) is installed at the right rear side of the upper end surface of the concrete base (1); it is characterized in that a powder tank (4) is installed at the front right side of the upper end surface of the concrete base (1), and a screw air compressor (5) is installed at the upper end surface of the concrete base (1) in front of the powder tank (4), and the air outlet of the screw air compressor (5) is connected to the air compressor hose (10) is connected to the air inlet on the powder tank (4); a powder conveying pipe (6) is provided on the upper end surface of the concrete base (1) between the secondary dust removal box body (3) and the powder tank (4), and a cleaning mechanism (7) is provided at the front end of the powder conveying pipe (6); a rain shelter (9) is installed on the upper end surface of the concrete base (1) above the powder tank (4) and the screw air compressor (5), and a wind drive assembly (8) is installed in the middle of the rear side of the rain shelter (9); The discharge port of the powder tank (4) is connected to a feed hose (401), and the other end of the feed hose (401) is connected to an air outlet box (402); the front, rear, left and right end surfaces of the air outlet box (402) are all fixedly inlaid with filtering non-woven fabrics (403), and the discharge port at the lower end of the air outlet box (402) is connected to the feed port on the right side of the top of the cement tank (2); The cleaning mechanism (7) comprises a first annular fixing plate (701), a second annular fixing plate (702), a guide rod (703) and an annular dust-sweeping brush (704); the first annular fixing plate (701) is fixedly mounted on the front end of the powder conveying pipe (6), and the front side of the first annular fixing plate (701) is fixedly connected to the second annular fixing plate (702) via four guide rods (703); the annular dust-sweeping brush (704) is slidably connected to the outside of the four guide rods (703); The wind drive assembly (8) comprises a rotating shaft (801), a wind blade (802), a screw nut (803), a reciprocating screw (804), a bevel gear A (805) and a bevel gear B (806); the rotating shaft (801) is rotatably connected to the middle of the rear side of the rain shelter (9) via a bracket; the wind blade (802) is fixedly mounted on the outer portion of the upper end of the rotating shaft (801); and the bevel gear is fixedly mounted on the lower end of the rotating shaft (801). A (805); the reciprocating screw (804) is rotatably connected to the upper sides of the first annular fixing plate (701) and the second annular fixing plate (702), and a bevel gear B (806) meshing with the bevel gear A (805) is fixedly installed at the rear end of the reciprocating screw (804); the screw nut (803) is fixedly installed at the middle part of the upper side of the annular dust sweeping brush (704), and the screw nut (803) is connected to the spiral groove on the reciprocating screw (804).

2. A mineral powder recovery device as claimed in claim 1, characterized in that: Two support frames (601) are fixedly installed on the outside of the powder conveying pipe (6), and a mounting plate (602) is fixedly connected to both ends of the lower part of each support frame (601); a feed pipe (603) for connecting to the bottom discharge port of the secondary dust removal box body (3) is provided at the upper rear part of the powder conveying pipe (6), and a discharge pipe (604) for connecting to the feed port of the powder tank (4) is provided at the lower front part of the powder conveying pipe (6); a feed motor (605) is fixedly installed at the front end of the powder conveying pipe (6), and a screw rod located inside the powder conveying pipe (6) is fixedly connected to the rear end of the rotating shaft of the feed motor (605).

3. A mineral powder recovery device as claimed in claim 2, characterized in that: The annular dust sweeping brush (704) is located outside the feeding motor (605), and the bristles of the annular dust sweeping brush (704) are in close contact with the outer peripheral surface of the feeding motor (605).

4. A mineral powder recovery device as claimed in claim 1, characterized in that: When the reciprocating screw (804) is in a rotating state, the screw nut (803) moves back and forth with the annular dust sweeping brush (704).

5. A mineral powder recovery device as claimed in claim 2, characterized in that: The invention also comprises fixing members (11), wherein the number of the fixing members (11) is four groups, and the four groups of fixing members (11) are respectively arranged on the upper end surfaces of four mounting plates (602); the fixing members (11) comprise fixing studs (1101), fixing nuts (1102) and limiting gears (1103); the number of fixing studs (1101) in each group of the fixing members (11) is four, and each fixing stud (1101) is fixedly connected to the upper end of the concrete base (1); the outside of each fixing stud (1101) is connected to a fixing nut (1102) by threading, and the bottom of each fixing nut (1102) is fixedly connected to a limiting gear (1103).

6. A mineral powder recovery device as claimed in claim 5, characterized in that: The invention also includes a locking assembly (12), wherein the number of the locking assemblies (12) is sixteen, and the sixteen locking assemblies (12) are respectively arranged on the upper end surfaces of four mounting plates (602); the locking assembly (12) includes a rectangular cylinder (1201), a rectangular sliding block (1202), a tightening block (1203), a sliding rod (1204), a rotating rod (1205) and a limiting plate (1206); the rectangular cylinder (1201) is fixedly mounted on the upper end surface of the mounting plate (602), and the rectangular sliding block (1202) is slidably connected inside the rectangular cylinder (1201); The head end of the rectangular sliding block (1202) is provided with a tightening block (1203) penetrating the head of the rectangular cylinder (1201), and the head end surface of the tightening block (1203) is provided with two tightening strips; the tail end of the rectangular sliding block (1202) is provided with a sliding rod (1204) penetrating the tail of the rectangular cylinder (1201), and the outside of the sliding rod (1204) is located inside the rectangular cylinder (1201) and is sleeved with a spring; the upper end surface of the rectangular sliding block (1202) is rotatably connected to a rotating rod (1205), and the upper end surface of the rectangular cylinder (1201) is fixedly connected to a limiting plate (1206).

7. A mineral powder recovery device as claimed in claim 6, characterized in that: When the locking assembly (12) is in a locked limited position state, the two tightening strips on the head end surface of the tightening block (1203) are in close contact with the outer peripheral surface of the limiting gear (1103).

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