Mixing device for full-depth cold-recycled mixture

Abstract

The mixing device comprises a mixing barrel, the top of the mixing barrel is open, a first single-shaft extension motor is arranged on one side of the upper portion of the mixing barrel, a first single-rod hydraulic cylinder is arranged at the outer bottom of the mixing barrel, an output shaft of the first single-shaft extension motor is fixedly connected with a barrel cover, and the barrel cover abuts against the top of the mixing barrel and is communicated with a feeding pipe. A piston rod of the first single-rod hydraulic cylinder faces upwards and is fixedly connected with a lifting plate, the lifting plate abuts against the inner wall of the mixing barrel, a supporting seat is arranged at the top of the lifting plate, a second single-rod hydraulic cylinder is arranged in the lower portion of the supporting seat, a double-rod hydraulic cylinder is arranged in the upper portion of the supporting seat, a piston rod of the second single-rod hydraulic cylinder is fixedly connected with a blocking plate, and the side wall, corresponding to the blocking plate, of the mixing barrel communicates with a discharging pipe; the blocking plate abuts against the inner wall of the discharging pipe, a second single-shaft-extension motor is arranged in the blocking plate, an output shaft of the second single-shaft-extension motor is fixedly connected with a spiral shaft with spiral blades, and a stirrer is arranged above the supporting base. The stirring device can be used for comprehensively stirring, accelerating the discharging speed and avoiding material residues, and is more practical.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the mixing technology field, concretely relates to a kind of mixing device for full-depth cold recycled mixture. BACKGROUND

[0002] ‌Full-depth cold in-place recycling is a kind of green, environmentally friendly pavement construction technology, which uses advanced pavement recycling technology to recycle old pavement materials instead of directly discarding them, effectively saving energy, reducing costs, and improving pavement performance and service life.

[0003] Currently, full-depth cold recycled pavement construction process mainly includes old pavement milling, recycled mixture preparation, uniform laying of recycled mixture, cold recycling milling and compaction of recycled pavement and other steps. Among them, the preparation of recycled mixture needs to re-mix the crushed and screened old pavement materials with recycling agent, new asphalt, new aggregate and other materials in mixing equipment according to a certain proportion. But the existing conventional mixing equipment still has some problems in actual use: 1. The stirring effect of the used stirrer is not good, often causing uneven material at the bottom, and the whole stirrer is not easy to disassemble, repair and clean, and the use is not flexible and convenient; 2. Due to the characteristics of the material, the discharge rate is not high, and the material is easy to remain on the inner wall of the equipment and the discharge pipe, even causing the blockage of the discharge pipe, which is not conducive to subsequent mixing processing, and needs to be improved. SUMMARY

[0004] Therefore, the purpose of the utility model is to provide a mixing device for full-depth cold recycled mixture, which can be fully stirred by the stirrer convenient to disassemble, can speed up the discharge rate and avoid material residue, to solve the above problems.

[0005] The utility model provides a kind of mixing device for full-depth cold recycling mixture, including mixing cylinder, the top of the mixing cylinder is open, first single-shaft extension motor is fixed on the outer wall of upper portion one side, first single-rod hydraulic cylinder is fixed on outer bottom, the output shaft of first single-shaft extension motor is upwards and is fixedly connected with cylinder cover, the cylinder cover is abutted on the top of mixing cylinder and is communicated with feeding pipe with feeding valve on it, the piston rod of first single-rod hydraulic cylinder is upwards and is fixedly connected with lifting plate, the inner wall of the mixing cylinder is abutted with lifting plate and square support seat is fixed on the top center of it, second single-rod hydraulic cylinder is built in the lower portion of support seat, double-rod hydraulic cylinder is built in the upper portion, the piston rod of second single-rod hydraulic cylinder and double-rod hydraulic cylinder can be extended support seat, and the piston rod of second single-rod hydraulic cylinder is fixedly connected with blocking plate, the side wall of mixing cylinder is communicated with discharge pipe corresponding to blocking plate, the blocking plate is extended into discharge pipe and is abutted with discharge pipe inner wall, second single-shaft extension motor is built in the blocking plate, the output shaft of second single-shaft extension motor is towards the direction where discharge pipe is located and coaxially fixedly connected with helical shaft with helical blade, stirrer is equipped above support seat, the stirrer includes a hollow ball, the outer bottom of the hollow ball is fixedly connected with mounting box, the bottom of the mounting box is open, blind hole is formed in the left and right side walls, the mounting box is sleeved on the upper portion of support seat, the two piston rods of double-rod hydraulic cylinder are corresponding with two blind holes and are inserted, double-shaft extension motor is fixedly arranged on the upper portion of the hollow ball, the two output shafts of double-shaft extension motor are respectively towards upper and lower sides, the output shaft on the upper side is coaxially fixedly connected with stirring vertical shaft, the output shaft on the lower side is fixedly sleeved with driving bevel gear, the stirring vertical shaft is upwards and is extended into the upper portion of mixing cylinder from the hollow ball and is fixedly connected with several square stirring frames on the circumferential side, the inner side of the stirring frame is fixedly provided with mesh stirring element formed by the intersection of several horizontal rods and several vertical rods, several stirring horizontal shafts are rotatably connected on the circumferential side of the hollow ball, the end of the stirring horizontal shaft in the hollow ball is fixedly sleeved with driven bevel gear perpendicular to driving bevel gear, the part of the stirring horizontal shaft outside the hollow ball is axially spaced and is distributed with several groups of stirring paddles, each group of stirring paddles is composed of several stirring rods which are circumferentially and uniformly distributed, the stirring rods are obliquely arranged towards the direction of the hollow ball or the opposite direction, the stirring rods of the same group of stirring paddles are obliquely arranged in the same direction, and the stirring rods of adjacent two groups of stirring paddles are obliquely arranged in the opposite direction.

[0006] Preferably, the feeding pipe has several and is circumferentially and uniformly distributed on the cylinder cover.

[0007] Preferably, the mounting box is matched with the upper portion of the support seat.

[0008] Preferably, the piston rod of the double-rod hydraulic cylinder is matched with the corresponding blind hole.

[0009] Preferably, a limiting disc is fixed on the middle part of the supporting base, and the bottom end of the mounting box abuts on the top of the limiting disc.

[0010] Preferably, the lifting plate and the blocking plate are both wrapped with rubber pads.

[0011] Preferably, a ring groove is fixed on the outer side of the upper part of the mixing barrel, the groove bottom of the ring groove is obliquely arranged, and a discharge pipe is communicated on the corresponding groove wall of the lower end of the ring groove.

[0012] The utility model discloses the beneficial effect is: when mixing processing, can open the feed valve, through the feed pipe and send raw materials into the mixing barrel. After feeding, close the feed valve, run the double shaft extension motor again, under the action of the double shaft extension motor, on one hand, can drive the stirring vertical shaft and the multiple stirring frame on it to rotate, and the mesh stirring piece on every stirring frame can effectively guarantee the stirring intensity and the flowability of material, thereby can through the cooperation of the multiple stirring frame of rotation and the mesh stirring piece of the stirring frame inboard, to material carry out efficient high -quality stirring mixing, on the other hand, can drive multiple stirring horizontal shafts to rotate through bevel gear transmission, through the multiple stirring rods on every rotating stirring horizontal shaft, can effectively stir and mix the material of the lower part of the mixing barrel, and the same group of stirring paddle's stirring rod's oblique direction is same, and the oblique direction of the stirring rod of adjacent two stirring paddles is opposite, can form interlayer convection between different positions of material when stirring, can greatly enhance the effect of stirring and mixing, can greatly enhance the stirring effect of the material of the lower part of the mixing barrel, guarantee the mixing uniformity of the lower part of the mixing barrel. Therefore, it can realize the comprehensive and efficient high -quality stirring mixing of material, and the efficiency and quality of mixing are higher, and it is more practical.

[0013] During the mixing process, the piston rod of the second single-rod hydraulic cylinder is in an extended state, so that the sealing plate can block the discharge pipe. After the mixing is completed, the piston rod of the second single-rod hydraulic cylinder is partially retracted to pull the sealing plate out of the discharge pipe, so that the discharge pipe is unblocked and discharge can be carried out. During the discharge process, the second single-axis extension motor can be operated to drive the spiral shaft and the spiral blades thereon to rotate, which can give the material a certain thrust, thereby effectively increasing the material discharge rate and being more conducive to subsequent processing. After the discharge is completed, the piston rod of the second single-rod hydraulic cylinder is further extended to push the sealing plate through the entire discharge pipe, so that the discharge pipe can be effectively scraped and cleared, avoiding material residue on the inner wall of the discharge pipe causing blockage of the discharge pipe, without affecting the subsequent mixing process. Next, the piston rod of the second single-rod hydraulic cylinder is retracted and reset, driving the screw shaft to completely retract into the mixing barrel. The first single-shaft extension motor is then operated to drive the barrel cover to rotate 180 degrees, and the barrel cover can be removed from the top of the mixing barrel. The first single-rod hydraulic cylinder is then operated to extend its piston rod, which can drive the lifting plate and the agitator to move upward as a whole until the lifting plate is completely removed from the mixing barrel. During this process, the lifting plate can be used to effectively scrape and remove the material from the inner wall of the mixing barrel to prevent material from remaining on the inner wall of the mixing barrel, which is more conducive to subsequent mixing processing. When the agitator needs to be cleaned, repaired, or replaced, after removing the agitator from the mixing barrel, the double-rod hydraulic cylinder can be operated to retract and reset its piston rod, release the plug lock on the installation box, and then unplug the installation box to completely remove the original agitator. Afterwards, you can take out the new agitator, align the mounting box on it with the support base and insert it into place. Then operate the double-rod hydraulic cylinder to extend the piston rod and insert it into the corresponding blind hole. Insert and fix the mounting box, and the new agitator is fixed and installed firmly, without affecting subsequent use. In this way, the agitator can be easily disassembled, assembled and replaced, making the overall use more flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Fig. 1 This is a schematic diagram of the main structure of the utility model;

[0015] Fig. 2 This is a schematic diagram of the main structure of the lifting plate and the support seat of the utility model;

[0016] Fig. 3 This is a schematic diagram of the main structure of the agitator of the utility model;

[0017] Fig. 4 This is a schematic diagram of the structure of the hollow ball of the utility model when viewed from above;

[0018] Fig. 5 This is a schematic diagram of the main structure of the utility model when the installation box is connected to the support base.

[0019] The figure label: 1 is mixing cylinder, 2 is first single shaft extension motor, 3 is first single rod hydraulic cylinder, 4 is cylinder cover, 5 is feeding valve, 6 is feeding pipe, 7 is lifting plate, 8 is support seat, 9 is second single rod hydraulic cylinder, 10 is double rod hydraulic cylinder, 11 is blocking plate, 12 is discharge pipe, 13 is second single shaft extension motor, 14 is spiral blade, 15 is spiral shaft, 16 is hollow ball, 17 is mounting box, 18 is blind hole, 19 is double shaft extension motor, 20 is stirring vertical shaft, 21 is driving bevel gear, 22 is stirring frame, 23 is net stirring piece, 24 is stirring horizontal shaft, 25 is driven bevel gear, 26 is stirring rod, 27 is limit disc, 28 is rubber pad, 29 is ring groove, 30 is discharge pipe. DETAILED DESCRIPTION

[0020] The utility model will be described in further detail below in combination with the drawings and specific embodiments:

[0021] For example Figs. 1 to 5As shown, a mixing device for full-depth cold recycled mixture, comprising a mixing cylinder 1, the top of the mixing cylinder 1 is open, a first single-shaft extension motor 2 is fixed on the outer wall of the upper side of the mixing cylinder 1, a first single-rod hydraulic cylinder 3 is fixed on the outer bottom, the output shaft of the first single-shaft extension motor 2 is upward and fixedly connected with a cylinder cover 4, the cylinder cover 4 abuts on the top of the mixing cylinder 1 and a feeding pipe 6 with a feeding valve 5 is communicated on the cylinder cover 4. The piston rod of the first single-rod hydraulic cylinder 3 extends into the mixing cylinder 1 upward and is fixedly connected with a lifting plate 7, the lifting plate 7 abuts on the inner wall of the mixing cylinder 1 and a square support seat 8 is fixed on the top center of the lifting plate 7, a second single-rod hydraulic cylinder 9 is built-in the lower part of the support seat 8 and a double-rod hydraulic cylinder 10 is built-in the upper part of the support seat 8, the piston rods of the second single-rod hydraulic cylinder 9 and the double-rod hydraulic cylinder 10 can extend out of the support seat 8 and the piston rod of the second single-rod hydraulic cylinder 9 is fixedly connected with a blocking plate 11. A discharging pipe 12 is communicated on the side wall of the mixing cylinder 1 corresponding to the blocking plate 11, the blocking plate 11 extends into the discharging pipe 12 and abuts on the inner wall of the discharging pipe 12, the blocking plate 11 is built-in a second single-shaft extension motor 13, the output shaft of the second single-shaft extension motor 13 is toward the direction where the discharging pipe 12 is located and coaxially fixedly connected with a helical shaft 15 with helical blades 14. A stirrer is arranged above the support seat 8, the stirrer comprises a hollow ball 16, the outer bottom of the hollow ball 16 is fixedly connected with a mounting box 17, the bottom of the mounting box 17 is open, blind holes 18 are formed on the left and right side walls of the mounting box 17, the mounting box 17 is sleeved on the upper part of the support seat 8, the two piston rods of the double-rod hydraulic cylinder 10 correspond to the two blind holes 18 one by one and are inserted into the two blind holes 18. A double-shaft extension motor 19 is fixedly arranged on the upper part of the hollow ball 16, the two output shafts of the double-shaft extension motor 19 are respectively toward the upper and lower sides and the output shaft on the upper side is coaxially fixedly connected with a stirring vertical shaft 20, the output shaft on the lower side is fixedly sleeved with a driving bevel gear 21, the stirring vertical shaft 20 extends out of the hollow ball 16 upward to the upper part of the mixing cylinder 1 and a plurality of square stirring frames 22 are fixedly connected on the circumferential side of the stirring vertical shaft 20, a mesh stirring piece 23 formed by a plurality of horizontal rods and a plurality of vertical rods is fixedly arranged on the inner side of the stirring frame 22, a plurality of stirring horizontal shafts 24 are rotatably connected on the circumferential side of the hollow ball 16, a driven bevel gear 25 vertically engaged with the driving bevel gear 21 is fixedly sleeved on one end of the stirring horizontal shaft 24 located in the hollow ball 16, a plurality of groups of stirring paddles are spaced apart along the axial direction of the stirring horizontal shaft 24 outside the hollow ball 16, each group of stirring paddles is composed of a plurality of stirring rods 26 circumferentially and uniformly distributed, the stirring rods 26 are obliquely arranged toward the direction where the hollow ball 16 is located or the opposite direction, the stirring rods 26 of the same group of stirring paddles are obliquely arranged in the same direction and the stirring rods 26 of adjacent groups of stirring paddles are obliquely arranged in opposite directions;

[0022] When mixing, the feed valve 5 can be opened, and the raw materials are fed into the mixing cylinder 1 through the feed pipe 6. After feeding, the feed valve 5 is closed, and the double-shaft extension motor 19 is operated. Under the action of the double-shaft extension motor 19, on the one hand, the stirring vertical shaft 20 and the multiple stirring frames 22 thereon can be driven to rotate, and the mesh stirring piece 23 on each stirring frame 22 can effectively ensure the stirring intensity and the flowability of the materials, so that the multiple stirring frames 22 in rotation and the mesh stirring piece 23 inside the stirring frame 22 can cooperate to efficiently and high-quality stir and mix the materials. On the other hand, the bevel gear transmission can drive the multiple stirring horizontal shafts 24 to rotate, and through the multiple stirring rods 26 on each rotating stirring horizontal shaft 24, the materials at the lower part of the mixing cylinder 1 can be effectively stirred and mixed. The inclination directions of the stirring rods 26 of the stirring paddles in the same group are the same, and the inclination directions of the stirring rods 26 of the adjacent two stirring paddles are opposite, which can form interlayer convection between the materials at different positions during stirring, greatly enhance the stirring and mixing effect, greatly enhance the stirring effect of the materials at the lower part of the mixing cylinder 1, and ensure the mixing uniformity of the materials at the lower part of the mixing cylinder 1. In this way, the materials can be fully, efficiently and high-quality stirred and mixed, the efficiency and quality of mixing are higher, and the device is more practical.

[0023] During the mixing process, the piston rod of the second single-rod hydraulic cylinder 9 is in an elongated state, so that the blocking plate 11 can block the discharge pipe 12. After the mixing is completed, the piston rod of the second single-rod hydraulic cylinder 9 is retracted by a part, and the blocking plate 11 is taken out of the discharge pipe 12, so that the discharge pipe 12 is unblocked, and the discharging is carried out. During the discharging process, the second single-shaft extension motor 13 can be operated to drive the spiral shaft 15 and the spiral blades 14 thereon to rotate, so that a certain thrust can be given to the material, thereby effectively improving the discharging rate of the material and being more conducive to subsequent processing. After the discharging is completed, the piston rod of the second single-rod hydraulic cylinder 9 is continuously elongated to push the blocking plate 11 through the entire discharge pipe 12, so that effective scraping and cleaning treatment of the discharge pipe 12 can be realized, the material is prevented from being left on the inner wall of the discharge pipe 12 to cause blockage of the discharge pipe 12, and subsequent mixing processing is not affected. Then, the piston rod of the second single-rod hydraulic cylinder 9 is retracted to reset, the spiral shaft 15 is completely withdrawn into the mixing cylinder 1, the first single-shaft extension motor 2 is operated again to drive the cylinder cover 4 to rotate by 180 degrees, the cylinder cover 4 is removed from the top of the mixing cylinder 1, and then the first single-rod hydraulic cylinder 3 is operated to elongate the piston rod, so that the lifting plate 7 and the stirrer are lifted upward as a whole until the lifting plate 7 is completely lifted out of the mixing cylinder 1. During the process, the inner wall of the mixing cylinder 1 can be effectively scraped and cleaned by the lifting plate 7, so that the material is prevented from being left on the inner wall of the mixing cylinder 1, and subsequent mixing processing is more conducive. When the stirrer needs to be cleaned or overhauled and replaced, the stirrer can be lifted out of the mixing cylinder 1, the double-rod hydraulic cylinder 10 is operated to retract the piston rod to reset, the plug-in locking of the mounting box 17 is released, and then the mounting box 17 is pulled out, so that the original stirrer can be completely disassembled. Then, a new stirrer can be taken to insert the mounting box 17 on the stirrer into the support seat 8 in place, the double-rod hydraulic cylinder 10 is operated to elongate the piston rod and insert it into the corresponding blind hole 18 in place, the mounting box 17 is inserted and fixed, so that the fixing and installation of the new stirrer are completed, the installation is stable, and subsequent use is not affected. In this way, the stirrer can be conveniently disassembled and replaced, and the overall use is more flexible and convenient.

[0024] In the embodiment, the feeding pipe 6 is circumferentially and uniformly distributed on the cylinder cover 4, and a plurality of raw materials can be simultaneously fed to improve the feeding rate.

[0025] In the embodiment, the mounting box 17 is matched with the upper part of the support seat 8 to ensure that the mounting box 17 is smoothly fitted in place.

[0026] In the embodiment, the piston rod of the double-rod hydraulic cylinder 10 is matched with the corresponding blind hole 18 to ensure that the mounting box 17 is smoothly inserted and locked, and the fixing and installation of the stirrer are realized.

[0027] In the embodiment, a limiting disc 27 is fixed on the middle part of the supporting base 8, and the bottom end of the mounting box 17 abuts against the top of the limiting disc 27, so as to ensure that the mounting box 18 is smoothly fixed and mounted.

[0028] In the embodiment, the lifting plate 7 and the peripheral side of the blocking plate 11 are both wrapped with rubber pads 28, so as to improve the corresponding blocking and scraping effects.

[0029] In the embodiment, a ring groove 29 is fixed on the outer side of the upper part of the mixing cylinder 1, which can receive the residual materials falling from the lifting plate 7 when the lifting plate 7 moves out of the mixing cylinder 1. The groove bottom of the ring groove 29 is obliquely arranged, and a discharge pipe 30 is communicated on the corresponding groove wall of the lower end of the ring groove 29, so as to facilitate the flow and discharge of the materials falling into the ring groove 29.

[0030] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mixing device for full-depth cold-recycled mixtures, comprising a mixing drum, characterized in that, The top of the mixing barrel is open, a first single-shaft extension motor is fixedly arranged on the upper side of the outer wall, a first single-rod hydraulic cylinder is fixedly arranged on the outer bottom, the output shaft of the first single-shaft extension motor is upward and fixedly connected with a barrel cover, the barrel cover abuts on the top of the mixing barrel and a feeding pipe with a feeding valve is communicated therethrough, the piston rod of the first single-rod hydraulic cylinder extends into the mixing barrel upward and is fixedly connected with a lifting plate, the lifting plate abuts on the inner wall of the mixing barrel and a square support seat is fixedly arranged on the top center of the lifting plate, a second single-rod hydraulic cylinder is arranged in the lower part of the support seat and a double-rod hydraulic cylinder is arranged in the upper part of the support seat, the piston rods of the second single-rod hydraulic cylinder and the double-rod hydraulic cylinder can extend out of the support seat and the piston rod of the second single-rod hydraulic cylinder is fixedly connected with a blocking plate, a discharge pipe is communicated through the side wall of the mixing barrel corresponding to the blocking plate, the blocking plate extends into the discharge pipe and abuts on the inner wall of the discharge pipe, a second single-shaft extension motor is arranged in the blocking plate, the output shaft of the second single-shaft extension motor is directed to the direction where the discharge pipe is located and coaxially fixedly connected with a spiral shaft with spiral blades, a stirrer is arranged above the support seat, the stirrer comprises a hollow ball, an installation box is fixedly connected to the outer bottom of the hollow ball, blind holes are formed in the bottom and the left and right side walls of the installation box, the installation box is sleeved on the upper part of the support seat, the two piston rods of the double-rod hydraulic cylinder correspond to the two blind holes one by one and are inserted therein, a double-shaft extension motor is fixedly arranged on the upper part of the hollow ball, the two output shafts of the double-shaft extension motor are respectively directed upward and downward, the output shaft on the upper side is coaxially fixedly connected with a stirring vertical shaft and the output shaft on the lower side is fixedly sleeved with a driving bevel gear, the stirring vertical shaft extends out of the hollow ball upward to the upper part of the mixing barrel and a plurality of square stirring frames are fixedly connected to the circumferential side of the stirring vertical shaft, a mesh-shaped stirring piece formed by a plurality of horizontal rods and a plurality of vertical rods is fixedly arranged on the inner side of the stirring frame, a plurality of stirring horizontal shafts are rotatably connected to the circumferential side of the hollow ball, a driven bevel gear is fixedly sleeved on one end of the stirring horizontal shaft located in the hollow ball and vertically engaged with the driving bevel gear, a plurality of groups of stirring paddles are spaced apart along the axial direction of the stirring horizontal shaft outside the hollow ball, each group of stirring paddles is composed of a plurality of stirring rods uniformly distributed in a circle, the stirring rods are obliquely arranged towards the direction of the hollow ball or the opposite direction, the stirring rods of the same group of stirring paddles are obliquely arranged in the same direction and the stirring rods of adjacent groups of stirring paddles are obliquely arranged in opposite directions.

2. The mixing device for full-depth cold-recycled mixtures according to claim 1, characterized in that, The feeding pipe is a plurality of and uniformly distributed in a circle on the barrel cover.

3. The mixing device for full-depth cold-recycled mixture according to claim 1, characterized in that, The installation box is matched with the upper part of the support seat.

4. The mixing device for full-depth cold-recycled mixtures according to claim 1, characterized in that, The piston rods of the double-rod hydraulic cylinder are matched with the corresponding blind holes.

5. The mixing device for full-depth cold-recycled mixtures as claimed in claim 1, characterized in that, A limiting disc is fixedly sleeved on the middle part of the support seat, and the bottom end of the installation box abuts on the top of the limiting disc.

6. The mixing device for full-depth cold-recycled mixtures as claimed in claim 1, characterized in that, Rubber pads are wrapped around the circumferential sides of the lifting plate and the blocking plate.

7. The mixing device for full-depth cold-recycled mixtures as claimed in claim 1, characterized in that, A ring groove is fixedly sleeved on the outer side of the upper part of the mixing barrel, the groove bottom is obliquely arranged, and a discharge pipe is communicated through the corresponding groove wall at the lower end of the groove bottom.

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