CN209812744U

CN209812744U - Environment-friendly mixer

Info

Publication number: CN209812744U
Application number: CN201920237710.4U
Authority: CN
Inventors: 张�杰; 李京颍; 李仿舟; 张利
Original assignee: Anhui Fuyang Shengda Machinery Co Ltd
Current assignee: Ili Gujun New Building Materials Co ltd
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2019-12-20
Anticipated expiration: 2029-02-19

Abstract

The utility model discloses an environment-friendly stirrer, which relates to the field of stirrers, and comprises a mixing barrel, a first motor and a rotating shaft, wherein an inner cavity is arranged inside the mixing barrel, the mixing barrel is provided with a discharge port and a plurality of feed inlets distributed along the axial direction of the mixing barrel, the first motor is connected with a main shaft, the main shaft is rotatably arranged at the central axis position of the inner cavity, the surface of the main shaft is fixedly connected with a conveying and stirring part, the rotating shaft is internally provided with storage tanks corresponding to the feed inlets one by one, the opening directions of the storage tanks are opposite, when in use, all the feed inlets are opened in sequence, in the subsequent mixing process, all raw materials are mixed in sequence, and the mixing process is uninterrupted, through the mixing mode, all concrete raw materials are pushed while being mixed and stirred in sequence, the mixing uniformity is ensured, the using effect is better, and the mixing process is carried out in the inner, can avoid the cement from being raised into the environment or the concrete from splashing into the environment, and the environment protection is realized in the stirring process.

Description

Environment-friendly mixer

Technical Field

The invention relates to the field of mixers, in particular to an environment-friendly mixer.

Background

A cement mixer, also known as concrete mixer, is a machine for mixing cement, aggregate of sand and stone and water to obtain concrete mixture, and is composed of mixing drum, feeding and discharging mechanism, water supply system, prime mover, drive mechanism, machine frame and supporter.

Among the prior art, cement mixer is when the stirring, when with the raw materials, puts into the mixer stirring with all raw materials composition, causes the inhomogeneous condition of stirring easily, causes the result of use not good, simultaneously because the mixer opening is the same with external environment, when the stirring, raises the not dissolved cement easily and plays the environment or makes the concrete splash to the environment in, causes environmental pollution.

Disclosure of Invention

In view of the above, an object of the present invention is to provide an environment-friendly mixer, so as to solve the technical problems that when cement mixers in the prior art are used for mixing, all raw material components are put into the mixer for mixing, which easily causes uneven mixing and poor use effect, and that when mixing, undissolved cement is easily lifted into the environment or concrete is easily splashed into the environment due to the same opening of the mixer as the external environment, which causes environmental pollution.

The invention provides an environment-friendly stirrer which comprises a mixing barrel, a first motor and a rotating shaft, wherein an inner cavity is arranged in the mixing barrel, the mixing barrel is provided with a discharge hole and a plurality of feed holes distributed along the axial direction of the mixing barrel, an output shaft of the first motor is connected with one end of a main shaft through a coupling, the main shaft is rotatably arranged at the central axis position of the inner cavity, the surface of the main shaft is fixedly connected with a conveying and stirring part, the conveying and stirring part conveys concrete raw materials to the discharge hole after the concrete raw materials enter the inner cavity through the feed holes, the concrete raw materials are mixed in the conveying process, the inner wall of the inner cavity is provided with a rotating groove, the inner cavity is communicated with the feed holes through the rotating groove, the rotating shaft is rotatably arranged in the rotating groove, the rotating shaft is internally provided with storage grooves corresponding to the feed holes one to one, and, the concrete raw materials in the feed inlet when rotating, pass through the opening gets into the stock chest, main shaft and master gear key-type connection, pivot and pinion key-type connection, master gear and pinion meshing.

Further, conveying stirring portion includes helical blade and puddler, helical blade is fixed to be set up on the surface of main shaft for convey the concrete to the discharge gate, puddler evenly distributed is on the surface of main shaft for with different concrete raw materials misce bene in the transfer process, be equipped with the clearance between helical blade and the puddler.

Further, still include the dwang, the dwang rotates to set up in the inside of pivot, and its one end extends to the outside of pivot, and this end and rotating gear key-type connection, the main shaft extends to the outside part of mixing drum and linkage gear key-type connection, linkage gear and rotating gear meshing, the stock chest is run through to the pivot, and the part that is located the stock chest is equipped with a plurality of stirring blades.

The stirring rod is in one-to-one correspondence with the stirring cavities, the bottom end face of the stirring rod is in a circular arc shape, a gear meshed with the worm is arranged on the circular arc-shaped surface, a shaft hole is formed in the circle center position of the circular arc, the stirring shaft is in rotating connection with the shaft hole, two ends of the stirring shaft are fixedly connected with two inner walls opposite to the stirring cavities, and when the second motor is started, the stirring rod is driven to swing in the stirring cavity.

Further, the concrete feeding device comprises a partition plate, a sliding rod, a locking rod and a pull rod, wherein the partition plate penetrates through the feeding hole and is in sliding connection with the feeding hole, the partition plate is provided with a blanking hole, when the blanking hole moves to the inside of the feeding hole, concrete raw materials in the feeding hole enter the storage tank through the blanking hole, when the blanking hole moves out of the inside of the feeding hole, the concrete raw materials are isolated from the storage tank, one end of the partition plate is fixedly connected with a fixed plate, the surface of a mixing cylinder on one side of the feeding hole is provided with a sliding groove, two ends of the sliding rod are fixedly connected with the side wall of the sliding groove, the bottom of the fixed plate is in sliding connection with the sliding rod, the sliding rod is sleeved with a first spring, one end of the first spring is fixedly connected with the fixed plate, the other end of the first spring is fixedly connected with the side wall of the sliding, the utility model discloses a feed inlet, including slide bar, check lock, spring, baffle, first spring, the bottom of check lock and the one end fixed connection of second spring, the other end of second spring and the lateral wall fixed connection of cavity, the one end of pull rod and the bottom fixed connection of check lock, the other end of pull rod extends to the outside of fixed plate.

Furthermore, the storage tank is a circular truncated cone or a prismatic table, and the area of the bottom of the storage tank is larger than that of the opening of the storage tank.

Furthermore, another two opposite side walls of the toggle cavity are provided with limit switches, inner grooves are formed in the positions, close to the surfaces of the main shafts, of the two side walls, the second motor is electrically connected with the limit switches, after any one of the stirring rods touches the corresponding limit switch, the second motor rotates in the reverse direction, the bottom of each inner groove is fixedly connected with one end of a third spring, the other end of each third spring is fixedly connected with one end of a shielding plate, the shielding plates are connected with the inner grooves in a sliding mode, and the other end of each shielding plate is always in contact connection with the surfaces of the stirring rods under the elastic force action of the third springs and used for isolating concrete.

Furthermore, the end face of the shielding plate, which is contacted with the stirring rod, is an arc-shaped end face.

Furthermore, the locking groove is provided with a plurality of on the slide bar surface for adjust the size of blanking mouth in the feed inlet is inside.

Further, the first motor is a servo motor.

The invention has the beneficial effects that: when the environment-friendly mixer is used, different concrete raw materials are put into each feeding hole, after a first motor is started, a fixing plate which is farthest away from the discharging hole is pulled firstly, so that a blanking hole on a corresponding partition plate enters the feeding hole, the concrete raw materials in the feeding hole enter a corresponding storage tank, after a rotating shaft rotates for half a circle, the concrete raw materials fall into an inner cavity and are conveyed by a helical blade, in the process of conveying to a second feeding hole, the concrete raw materials in the second feeding hole enter the corresponding storage tank, when the front concrete raw materials are conveyed to the position of the second feeding hole, the concrete raw materials in the storage tank corresponding to the second feeding hole fall into the inner cavity and are conveyed by the helical blade, and in the conveying process, the front concrete raw materials are uniformly mixed under the action of a mixing rod, at mixing the concrete raw materials and by the data send in-process, repeat above-mentioned operation, until required concrete raw materials misce bene completely, break away from the inner chamber by the discharge gate under the helical blade conveying, accomplish the mixing operation, in above-mentioned in-process, all feed inlets are opened the back in proper order, in the follow-up mixing process, all raw materials will be mixed in proper order, and mixing process is incessant, through this kind of hybrid, make each concrete raw materials promoted on one side, on the other side mix the stirring in proper order, guarantee the misce bene, the result of use is better, mixing process goes on in the inner chamber simultaneously, can avoid cement to raise to the environment or make the concrete splash to the environment, make the mixing process realize the environmental protection.

Drawings

FIG. 1 is a first schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a second schematic structural diagram of an embodiment of the present invention;

FIG. 4 is a schematic diagram of a stir bar according to an embodiment of the present invention;

FIG. 5 is an enlarged view at B in FIG. 4;

FIG. 6 is a schematic structural diagram of a feed gap in an embodiment of the present invention.

Wherein, 1-mixing cylinder, 2-inner cavity, 3-motor, 4-main shaft, 5-rotating shaft, 6-helical blade, 7-stirring rod, 8-feeding hole, 9-discharging hole, 10-stock storage tank, 11-main gear, 12-pinion, 13-rotating tank, 14-linkage gear, 15-rotating gear, 16-rotating rod, 17-stirring blade, 18-worm, 19-worm cavity, 20-second motor, 21-clapboard, 22-sliding tank, 23-blanking hole, 24-sliding rod, 25-fixing plate, 26-first spring, 27-locking tank, 28-locking rod, 29-pulling rod, 30-cavity, 31-second spring, 32-stirring cavity, 33-inner groove, 34-third spring, 35-shielding plate, 36-limit switch and 37-stirring shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.

In view of the above, the present invention provides, in a first aspect, an embodiment of an environmentally friendly blender. As shown in fig. 1, the mixing device comprises a mixing drum 1, a first motor 3 and a rotating shaft 5, wherein an inner cavity 2 is arranged inside the mixing drum 1, the mixing drum 1 is provided with a discharge port 9 and a plurality of feed ports 8 distributed along the axial direction of the mixing drum, an output shaft of the first motor 3 is connected with one end of a main shaft 4 through a coupling, the main shaft 4 is rotatably arranged at the central axis position of the inner cavity 2, the surface of the main shaft is fixedly connected with a conveying and stirring part, the conveying and stirring part conveys concrete raw materials to the discharge port 9 after the concrete raw materials enter the inner cavity 2 through the feed ports 8 and mixes the concrete raw materials in the conveying process, a rotating groove 13 is arranged on the inner wall of the inner cavity 2, the inner cavity 2 is communicated with the feed ports 8 through the rotating groove 13, the rotating shaft 5 is rotatably arranged in the rotating groove 13, and storage grooves 10 corresponding to, the opening directions of the adjacent storage troughs 10 are opposite, the concrete raw materials in the feeding port 8 enter the storage troughs 10 through the openings when rotating, the main shaft 4 is in key connection with the main gear 11, the rotating shaft 5 is in key connection with the auxiliary gear 12, and the main gear 11 is meshed with the auxiliary gear 12. The first motor 3 adopts a servo motor.

When in use, after the motor is started, firstly, a first concrete raw material is put into the feed inlet 8 which is farthest away from the discharge outlet 9, so that the concrete raw material in the feed inlet 8 enters the corresponding storage tank 10, the main gear 11 drives the pinion 12 to rotate, so that the rotating shaft 5 is driven to rotate, after the rotating shaft 5 rotates for half a circle, the concrete raw material falls into the inner cavity 2 and is conveyed by the conveying and stirring part, in the process of conveying to the position of the second feed inlet 8, a second concrete raw material is put into the second feed inlet 8, and the second concrete raw material enters the corresponding storage tank 10, when the front concrete raw material is conveyed to the position of the second feed inlet 8, the concrete raw material in the storage tank 10 corresponding to the second feed inlet 8 falls into the inner cavity 2 and is conveyed by the conveying and stirring part, in the conveying process, the front two concrete raw materials are mutually stirred under the action of the conveying and stirring part, make its misce bene, in mixing the concrete raw materials and by the transfer process, coincide above-mentioned operation, until required concrete raw materials misce bene completely, break away from inner chamber 2 by discharge gate 9 under the conveying of conveying stirring portion, accomplish the mixing operation, in above-mentioned in-process, put into different feed inlets 8 with the concrete raw materials in proper order when beginning to mix, in the follow-up mixing process, all concrete raw materials will be mixed in proper order, and mixing process is incessant, through this kind of hybrid, make each concrete raw materials promote on one side, on one side mix the stirring in proper order, guarantee the misce bene, the result of use is better. And meanwhile, the mixing process is carried out in the inner cavity 2, so that cement can be effectively prevented from being raised into the environment or concrete can be splashed into the environment, and the environment protection is realized in the stirring process.

As another aspect of the present invention, in the above embodiment, as shown in fig. 1, the conveying and stirring part includes a helical blade 6 and a stirring rod 7, the helical blade 6 is fixedly disposed on the surface of the main shaft 4 for conveying concrete to the discharge port 9, the stirring rod 7 is uniformly distributed on the surface of the main shaft 4 for uniformly mixing different concrete materials during the conveying process, and a gap is provided between the helical blade 6 and the stirring rod 7. After different concrete raw materials fall into the inner cavity 2, the concrete raw materials are conveyed by the helical blades 6, the different concrete raw materials are uniformly mixed in the conveying process by the stirring rod 7, and finally the different concrete raw materials are conveyed to the position of the discharge hole 9 by the helical blades 6. The clearance between helical blade 6 and puddler 7 can prevent that the concrete raw materials from being blocked in the stirring process, simultaneously, if there is not the clearance between the two, puddler 7 will not play sufficient stirring effect.

As another aspect of the present invention, in any of the above embodiments, as shown in fig. 3, the present invention further includes a rotating rod 16, the rotating rod 16 is rotatably disposed inside the rotating shaft 5, one end of the rotating rod 16 extends to the outside of the rotating shaft 5 and is keyed with a rotating gear 15, the portion of the main shaft 4 extending to the outside of the mixing drum 1 is keyed with a linkage gear 14, the linkage gear 14 is meshed with the rotating gear 15, the rotating shaft 5 penetrates through the storage tank 10, and the portion of the storage tank 10 is provided with a plurality of stirring blades 17. When some concrete is stored, for example, cement is stored for a long time, the concrete is not easily naturally separated from each other under the action of the pressure of the cement, at the moment, after the cement enters the storage tank 10, the rotating gear 15 is driven to rotate through the linkage gear 14, so that the rotating rod 16 rotates, and when the rotating rod 16 rotates, the cement which is not easily separated is separated through the stirring blades 17, so that the mixing effect is better when the cement is mixed; in addition, some of the concrete materials in the storage tank 10 may be jammed with each other and may not fall into the inner cavity 2 from the storage tank 10, and the concrete materials may be discharged from the storage tank 10 by the stirring blade 17.

As another aspect of the present invention, in any of the above embodiments, as shown in fig. 4, the present invention further includes a worm 18, a second motor 20, and a stirring shaft 37, the other end of the main shaft 4 is fixedly connected to the motor fixing frame, the second motor 20 is fixedly connected to the motor fixing frame, the main shaft 4 is internally provided with a worm cavity 19, the worm 18 is rotatably disposed at a central axis position of the worm cavity 19, an output shaft of the second motor 20 is connected to one end of the worm 18 through a coupling, as shown in fig. 5, the surface of the main shaft 4 is provided with a plurality of stirring cavities 32 communicated with the worm cavity 19, the stirring rods 7 are in one-to-one correspondence with the stirring cavities 32, the bottom end surfaces thereof are arc-shaped, the arc-shaped surfaces are provided with gears engaged with the worm 18, the center positions of the arc-shaped gears are provided with shaft holes, the stirring shaft 37 is rotatably connected to the shaft holes, and two ends of the stirring shaft 37, when the second motor 20 is started, the stirring rod 7 is driven to swing in the stirring cavity 32.

After the transmission and stirring process is started, the second motor 20 is started to drive the worm 18 to rotate in the worm cavity 19, and the worm 18 is meshed with the gear at the bottom of the stirring rod 17, so that the stirring rod 7 is driven to swing back and forth in the stirring cavity 32, the mixing time of the concrete raw materials in the inner cavity 2 can be shortened, and the mixing efficiency is improved.

In addition, as shown in fig. 5, the other two opposite side walls of the toggle cavity 32 are provided with limit switches 36, and the two side walls are provided with inner grooves 33 at positions close to the surface of the main shaft 4, the second motor 20 is electrically connected with the limit switches 36, after any one of the stirring rods 7 touches the corresponding limit switch 36, the second motor 20 rotates in reverse direction, the bottom of the inner groove 33 is fixedly connected with one end of a third spring 34, the other end of the third spring 34 is fixedly connected with one end of a shield 35, the shield 35 is slidably connected with the inner groove 33, and the other end of the shield 35 is always in contact connection with the surface of the stirring rod 7 under the elastic force of the third spring 34 for isolating concrete. The end surface of the shielding plate 35 contacting with the stirring rod 7 is a circular arc end surface.

When the stirring rods 7 on the main shaft 4 swing back and forth, as long as one of the stirring rods 7 touches the corresponding limit switch 36, the second motor 20 rotates in the direction, so that all the stirring rods 7 rotate in the opposite direction, and the stirring rods 7 are prevented from impacting the inner wall of the toggle cavity 32 in the swinging process through the limit switch 36 to cause damage to the device. Meanwhile, when the stirring rod 7 swings, the shielding plate 35 is always in contact with the surface of the stirring rod 7 under the action of the third spring 34, so that concrete raw materials can be effectively prevented from entering the worm cavity 19 in the conveying and stirring process, components in the worm cavity 19 are protected, and the situation that the components cannot be started due to concrete adhesion is avoided.

As another aspect of the present invention, in any of the above embodiments, as shown in fig. 6, the present invention further includes a partition plate 21, a sliding rod 24, a locking rod 28 and a pull rod 29, wherein the partition plate 21 penetrates through the feeding port 8 and is slidably connected to the feeding port 8, the partition plate 21 is provided with a blanking port 23, when the blanking port 23 moves to the inside of the feeding port 8, the concrete material inside the feeding port 8 enters the storage tank 10 through the blanking port 23, when the blanking port moves out of the inside of the feeding port 8, the concrete material is isolated from the storage tank 10, one end of the partition plate 21 is fixedly connected to a fixing plate 25, the surface of the mixing cylinder 1 on one side of the feeding port 8 is provided with a sliding groove 22, two ends of the sliding rod 24 are fixedly connected to the side wall of the sliding groove 22, the bottom of the fixing plate 25 is slidably connected to the sliding rod 24, the sliding rod 24 is sleeved with a first spring 26, one, the other end of first spring 26 and the lateral wall fixed connection of sliding tray 22, the inside of fixed plate 25 is equipped with cavity 30, check lock lever 28 and cavity 30 sliding connection, check lock lever 28 and the locking groove 27 swing joint who sets up on slide bar 24 surface for when blanking mouth 23 removes the inside of feed inlet 8, it is fixed with baffle 21, the bottom of check lock lever 28 and the one end fixed connection of second spring 31, the other end of second spring 31 and the lateral wall fixed connection of cavity 30, the one end of pull rod 29 and the bottom fixed connection of check lock lever 28, the other end of pull rod 29 extends to the outside of fixed plate 25.

When the device is used, different concrete raw materials are put into each feeding hole, after the first motor 3 is started, the fixing plate 25 at the farthest end from the discharging hole 9 is pulled firstly, the pull rod 29 is lifted at the same time, the locking rod 28 is contracted into the cavity 30, the fixing plate 25 moves on the slide rod 24 to overcome the elastic force of the first spring 26, the blanking hole 23 on the partition plate 21 gradually enters the inside of the feeding hole 8, when the blanking hole 23 completely enters the inside of the feeding hole 8, the pull rod 29 is loosened, the locking rod 28 enters the locking groove 27 under the action of the second spring 31 to fix the partition plate 21, at the moment, the concrete raw materials inside the feeding hole 8 enter the corresponding storage groove 10 through the blanking hole 23, after the rotating shaft 5 rotates for half a circle, the concrete raw materials fall into the inner cavity 2 and are conveyed by the spiral blade 6 and are conveyed to the second feeding hole 8, repeating the above operation, the concrete raw material of the second feeding port 8 enters the corresponding storage tank 10, when the previous concrete raw material is conveyed to the position corresponding to the second feeding port 8, the concrete raw material in the storage tank 10 corresponding to the second feeding port 8 falls into the inner cavity 2 and is conveyed by the helical blade 6, and in the conveying process, the previous two concrete raw materials are uniformly mixed with each other under the action of the stirring rod 7. In the process of conveying the mixed concrete raw materials, the operations are repeated until the required concrete raw materials are completely and uniformly mixed, and the mixed concrete raw materials are separated from the inner cavity 2 through the discharge hole 9 under the conveying of the helical blade 6, so that the mixing operation is completed. After all the seed granules are mixed, the pull rod 29 is lifted, so that the fixed plate 25 pushes the partition plate 21 to close the feed port 8 under the action of the first spring 26.

In addition, considering that the mixing ratio of some concrete materials may be different when mixing, the locking grooves 27 are provided in the surface of the sliding rod 24 in a plurality for adjusting the size of the drop opening 23 inside the feed opening 8.

As another aspect of the present invention, in any of the above embodiments, as shown in fig. 1, the storage trough 10 is a circular truncated cone or a truncated pyramid, and the area of the bottom of the storage trough 10 is larger than the area of the opening, so that when the concrete raw material in the storage trough 10 falls into the inner cavity 2, the falling rate is more uniform, which is beneficial to uniform mixing.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides an environment-friendly mixer which characterized in that: including a mixing drum (1), a first motor (3) and a rotating shaft (5), the inside of mixing drum (1) is equipped with inner chamber (2), mixing drum (1) is equipped with discharge gate (9) and a plurality of feed inlets (8) along its axial distribution, the output shaft of first motor (3) passes through the shaft coupling and is connected with the one end of main shaft (4), the rotatable setting of main shaft (4) is in the axis position of inner chamber (2), and its fixed surface is connected with the conveying stirring portion, conveying stirring portion passes through feed inlet (8) at the concrete raw materials and gets into inner chamber (2) back, conveys the concrete raw materials to discharge gate (9) to mix the concrete raw materials in the transfer process, the inner wall of inner chamber (2) is equipped with rotation groove (13), inner chamber (2) are through rotating groove (13) and feed inlet (8) intercommunication, pivot (5) rotate and set up in rotation groove (13), the inside of pivot (5) is equipped with stock chest (10) with feed inlet (8) one-to-one, and is adjacent the opening opposite direction of stock chest (10), concrete raw materials in feed inlet (8) is when rotating, through the opening gets into stock chest (10), main shaft (4) and main gear (11) key-type connection, pivot (5) and pinion (12) key-type connection, main gear (11) and pinion (12) meshing.

2. The environment-friendly mixer as defined in claim 1 wherein: conveying stirring portion includes helical blade (6) and puddler (7), helical blade (6) are fixed to be set up on the surface of main shaft (4) for convey concrete to discharge gate (9), puddler (7) evenly distributed is on the surface of main shaft (4) for concrete raw materials misce bene of difference in the transfer process, be equipped with the clearance between helical blade (6) and puddler (7).

3. The environment-friendly mixer as defined in claim 2 wherein: still include dwang (16), dwang (16) rotate to set up in the inside of pivot (5), and its one end extends to the outside of pivot (5), and this end and running gear (15) key-type connection, main shaft (4) extend to mixing section of thick bamboo (1) outside part and linkage gear (14) key-type connection, linkage gear (14) and running gear (15) meshing, stock chest (10) are run through in pivot (5), and the part that is located stock chest (10) is equipped with a plurality of stirring blades (17).

4. The environment-friendly mixer as defined in claim 2 wherein: the stirring mechanism is characterized by further comprising a worm (18), a second motor (20) and a stirring shaft (37), the other end of the main shaft (4) is fixedly connected with a motor fixing frame, the second motor (20) is fixedly connected with the motor fixing frame, a worm cavity (19) is arranged inside the main shaft (4), the worm (18) is rotatably arranged at the central axis position of the worm cavity (19), an output shaft of the second motor (20) is connected with one end of the worm (18) through a coupler, a plurality of stirring cavities (32) communicated with the worm cavity (19) are arranged on the surface of the main shaft (4), the stirring rods (7) correspond to the stirring cavities (32) one by one, the end face of the bottom of each stirring rod is arc-shaped, gears meshed with the worm (18) are arranged on the arc-shaped surface, a shaft hole is arranged at the circle center position of the arc-shaped gears, the stirring shaft (37) is rotatably connected with the shaft hole, and two ends of the stirring shaft (37) are fixedly connected, when the second motor (20) is started, the stirring rod (7) is driven to swing in the stirring cavity (32).

5. The environment-friendly mixer as defined in claim 2 wherein: still include baffle (21), slide bar (24), check lock lever (28) and pull rod (29), baffle (21) run through feed inlet (8), and its and feed inlet (8) sliding connection, baffle (21) are equipped with blanking mouth (23), when blanking mouth (23) remove the inside of feed inlet (8), the concrete raw materials of feed inlet (8) inside gets into silo (10) through blanking mouth (23), when the blanking mouth shifts out feed inlet (8) inside, make between concrete raw materials and silo (10) completely cut off, the one end and the fixed plate (25) fixed connection of baffle (21), mixing drum (1) surface of feed inlet (8) one side is equipped with sliding tray (22), the both ends of slide bar (24) and the lateral wall fixed connection of sliding tray (22), the bottom and the slide bar (24) sliding connection of fixed plate (25), the sliding rod (24) is sleeved with a first spring (26), one end of the first spring (26) is fixedly connected with the fixed plate (25), the other end of the first spring (26) is fixedly connected with the side wall of the sliding groove (22), a cavity (30) is arranged in the fixing plate (25), the locking rod (28) is connected with the cavity (30) in a sliding way, the locking rod (28) is movably connected with a locking groove (27) arranged on the surface of the sliding rod (24), used for fixing the clapboard (21) when the blanking port (23) moves to the inner part of the feeding port (8), the bottom of the locking rod (28) is fixedly connected with one end of a second spring (31), the other end of the second spring (31) is fixedly connected with the side wall of the cavity (30), one end of the pull rod (29) is fixedly connected with the bottom of the locking rod (28), and the other end of the pull rod (29) extends to the outside of the fixing plate (25).

6. The environment-friendly mixer as defined in claim 1 wherein: the storage tank (10) is a circular truncated cone or a prismatic table, and the area of the bottom of the storage tank (10) is larger than that of the opening of the storage tank.

7. The environment-friendly mixer as defined in claim 4 wherein: the other two opposite side walls of the toggle cavity (32) are provided with limit switches (36), inner grooves (33) are formed in the positions, close to the surfaces of the main shafts (4), of the two side walls, the second motor (20) is electrically connected with the limit switches (36), after any one stirring rod (7) touches the corresponding limit switches (36), the second motor (20) rotates reversely, the bottom of the inner groove (33) is fixedly connected with one end of a third spring (34), the other end of the third spring (34) is fixedly connected with one end of a shielding plate (35), the shielding plate (35) is connected with the inner grooves (33) in a sliding mode, and the other end of the shielding plate (35) is always in contact connection with the surfaces of the stirring rods (7) under the elastic force action of the third spring (34) and used for isolating concrete.

8. The environment-friendly mixer as defined in claim 7 wherein: the end face of the shielding plate (35) contacting with the stirring rod (7) is a circular arc end face.

9. The environment-friendly mixer as defined in claim 5 wherein: the locking grooves (27) are formed in the surfaces of the sliding rods (24) and used for adjusting the size of the blanking port (23) in the feeding port (8).

10. The environment-friendly mixer as defined in claim 1 wherein: the first motor (3) adopts a servo motor.