CN220129137U - Concrete mixer - Google Patents

Abstract

The utility model provides a concrete mixer, which comprises a feeding device, a mixing device, a discharging device and a chassis device. The feeding device, the mixing device and the discharging device are sequentially communicated to form a mixer main body; the feeding device is provided with a feeding port; the mixing device is provided with a mixing cavity, and the inner wall of the mixing cavity is provided with a plurality of vibrating cavities and stirring blades; the vibrating cavity and the stirring blades are arranged at intervals along the circumferential direction; an ultrasonic vibration rod and a power supply are arranged in the vibration cavity; the steel plate at one side of the vibration cavity closest to the mixing cavity is a thin plate, the ultrasonic transducer of the ultrasonic vibration rod is clung to the thin plate, and the discharging device is provided with a discharging hole. According to the utility model, mechanical stirring and ultrasonic vibration are combined through the ultrasonic vibration rod and the stirring blade, and the nano silicon dioxide particles are dispersed in an oscillating way, so that the nano material is fully and uniformly dispersed in cement paste or concrete mixture, the agglomeration phenomenon of the cement particles is destroyed, the problems of dry mixing and agglomeration of material mixing are reduced, the development of the dispersion phenomenon is promoted, and the construction quality is improved with convenient operation.

Description

Concrete mixer

Technical Field

The utility model relates to the field of civil engineering, in particular to a concrete mixer.

Background

Nanomaterial has been widely used in concrete research in recent years. The Nano silicon dioxide Nano-Silica, namely NS, belongs to inorganic nonmetallic Nano materials, has the particle size of 1-100nm, and has the characteristics of strong adsorptivity, good plasticity, high magnetic resistance, low thermal conductivity and the like. The strength and durability of the concrete can be enhanced due to the extremely strong volcanic activity, the micro aggregate filling effect and the nucleation effect. However, the NS has large water demand, can accelerate the heat release rate of early hydration of cement, shortens the setting time of the cement, increases the early shrinkage of the concrete, is difficult to disperse and has high price, and the application of the NS in practical engineering is restricted to a certain extent.

When the nano material silicon dioxide is mixed with cement, the aggregation phenomenon is easy to occur due to the comprehensive factors of small material granularity, large specific surface area, high surface activity, strong chargeability and the like. At present, a cement mixer or a concrete mixer is directly adopted in the engineering, all materials and water are simultaneously mixed for stirring and mixing reaction, nano silicon dioxide is insoluble in water and has serious agglomeration problem, so that the materials cannot fully play the roles of the materials, the performance of a cement matrix is affected, and the construction quality is reduced. And the existing concrete mixer feed inlet and discharge outlet are not separately arranged, dust easily causes adverse effects on mixing with nano materials during feeding and discharging, a feeding device is in a straight-through design, materials easily cause large punching to the device during feeding, slipping phenomenon easily occurs between a transmission mechanism and a mixer main body, and the mixer is heavy and inconvenient to move and is not suitable for complex environments such as construction sites.

Ren Zhen ultrasonic mechanical method for preparing nano silicon dioxide and influence factor analysis, and obtaining SiO prepared by ultrasonic mechanical method for preparing nano silicon dioxide ₂ The particle size is small, and the mesoscopic dispersion is uniform. Chinese utility model CN105252644a discloses a secondary stirring process for concrete based on ultrasonic treatment, by which the cement slurry is made more uniform. Analysis of ultrasonic vibration and influence factors thereof of steel castings, which are researched by Dragon nations, is carried out to obtain that ultrasonic waves are at low frequency, the attenuation coefficient of the steel castings to the ultrasonic waves does not influence the vibration effect of ultrasonic frequency vibration nano silicon dioxide, and the nano particles obtained by vibration are small in granularity and uniform in mesoscopic dispersion. According to the research of Qin Wenzhe, 3D printing of the high-viscosity fluid material based on ultrasonic vibration is obtained, extrusion molding of the high-viscosity fluid material can be achieved and 3D printing can be completed under the action of ultrasonic vibration, cement also has certain viscosity, and ultrasonic vibration is also suitable for mixing of cement.

Under the background, the utility model designs a concrete mixer, so that nano silicon dioxide particles can be more fully and uniformly dispersed in cement paste or concrete mixture, and the construction quality is improved.

Disclosure of Invention

In view of the above-mentioned technical problems, an object of one embodiment of the present utility model is to provide a concrete mixer, in which a mixing chamber is provided with a vibration stirring mechanism, the vibration stirring mechanism includes an ultrasonic vibration rod and stirring blades, so as to reduce agglomeration, and enable nano silica particles to be more fully and uniformly dispersed in cement paste or concrete mixture.

One of the purposes of one mode of the utility model is that the first baffle door of the feeding hole and the second baffle door at the discharging hole are separately arranged through the feeding hole and the discharging hole of the mixer body, and the first baffle door and the second baffle door at the discharging hole are closed when the device operates, so that the mixing influence of dust on nano materials is reduced to the greatest extent.

One of the purposes of one mode of the utility model is to reduce the problem that the material can be punched into the device more at one time by adopting the folding angle on the feeding buffer device.

One of the purposes of one mode of the utility model is that the gear ring is arranged on the mixing device, and the gear is meshed with the gear ring, so that the slipping phenomenon between the transmission mechanism and the mixer main body can be reduced, and the work is more stable and reliable.

One of the purposes of the utility model is that by arranging the vibration cavity on the inner wall of the mixing cavity, when the ultrasonic vibration rod in the vibration cavity vibrates, the ultrasonic wave penetrates through the thin plate to act on the internal materials, the materials are oscillated and dispersed, and the combination of the ultrasonic vibration rod and the stirring blade enables the nano materials to be dispersed into cement paste or concrete mixture more fully and uniformly.

One of the objects of one embodiment of the present utility model is by providing a drawbar, a pair of support legs and a pair of wheels; the supporting legs are arranged on one side, close to the discharge port, of the chassis device, the wheels are arranged on one side, close to the feed port, of the chassis device, the traction rods are arranged on the front portion of the chassis device, the mixer body is light and convenient to move, and the mixer is suitable for complex environments such as construction sites.

Note that the description of these objects does not prevent the existence of other objects. Not all of the above objects need be achieved in one embodiment of the present utility model. Other objects than the above objects can be extracted from the description of the specification, drawings, and claims.

The technical scheme adopted for solving the technical problems is as follows:

a concrete mixer comprises a feeding device, a mixing device, a discharging device and a chassis device;

the feeding device, the mixing device and the discharging device are sequentially communicated to form a stirrer main body, the stirrer main body is arranged on the chassis device, the mixing device is connected with the chassis device through a transmission mechanism, and the transmission mechanism is connected with the first driving mechanism; the feeding device is provided with a feeding hole, and a first baffle door is arranged at the feeding hole;

the mixing device is provided with a mixing cavity, the inner wall of the mixing cavity is provided with a vibration stirring mechanism, and the vibration stirring mechanism comprises a plurality of vibration cavities and stirring blades; the vibrating cavity and the stirring blades are arranged at intervals along the circumferential direction; an ultrasonic vibration rod and a power supply are arranged in the vibration cavity; the ultrasonic vibration rod is connected with a power supply; the steel plate at one side of the vibration cavity closest to the mixing cavity is a thin plate, and the ultrasonic transducer of the ultrasonic vibration rod is tightly attached to the thin plate; the stirring blade has a curved section;

the discharging device is provided with a discharging hole, a second baffle door is arranged at the discharging hole, and a pair of discharging blades are arranged on the inner wall of the discharging device.

In the scheme, the ultrasonic transducer of the ultrasonic vibration rod is tightly attached to the thin plate and fixed through the bolts.

In the scheme, the device also comprises a feeding buffer device; the feeding buffer device comprises a hopper and a supporting base, a baffle is arranged at the inlet of the hopper, a valve is arranged on the baffle, the outlet of the hopper is connected with the feeding port of the feeding device, the bottom of the outlet of the hopper is connected with the supporting base through a rotating part, and the rotating part is connected with a second driving mechanism; the conveying pipeline of the hopper is provided with a folding angle, and the folding angle beta is 135 degrees.

In the scheme, a cover plate is arranged outside the vibration cavity and is connected with the outer wall of the mixing cavity through a hinge; and a vibrating cavity door bolt is arranged on the cover plate.

In the above scheme, first shutter both sides are connected with feed arrangement's feed inlet through the hinge respectively, still be equipped with the keeper on the first shutter.

In the scheme, the transmission mechanism comprises a gear ring and a gear shaft;

a gear ring is arranged on the circumference of the outer wall of the mixing device; the chassis device is provided with a gear shaft, the gear shaft is provided with a gear, and the gear ring is meshed with the gear; the gear shaft is connected with a first driving mechanism.

Further, two gear rings are arranged on the circumference of the outer wall of the mixing device; gear shafts are respectively arranged on two sides of the chassis device, two gears are arranged on the gear shafts, and gear rings are respectively meshed with the gears corresponding to the gears;

the gear shaft is connected with a first driving mechanism.

In the scheme, the water pump also comprises a water pump and a water pipe, and one end of the water pipe is connected with the water pump.

In the scheme, the chassis device is also provided with a supporting rod; the support rod is provided with a hook, the discharging device is provided with a circular hole, and the hook is hung on the circular hole.

In the scheme, the traction device also comprises a traction rod, a pair of supporting legs and a pair of wheels; the supporting legs are arranged on one side, close to the discharge port, of the chassis device, the wheels are arranged on one side, close to the feed port, of the chassis device, and the traction rods are arranged on the front portion of the chassis device. Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model improves on the basis of the existing concrete mixer, combines mechanical stirring and ultrasonic vibration to be applied to the concrete mixer, reduces the particle agglomeration phenomenon in the stirring process, and ensures that nano silicon dioxide particles can be more fully and uniformly dispersed in cement paste or concrete mixture.

2. The feeding and discharging ports are arranged separately, and the first baffle door of the feeding port and the second baffle door at the discharging port are closed when the device operates, so that the mixing influence of dust on nano materials is reduced to the greatest extent.

3. The feed buffer device adopts the folding angle, so that the problem that the device is greatly stamped by materials at one time is solved.

4. The gear ring is arranged on the mixing device, and is meshed with the gear ring, so that the slipping phenomenon between the transmission mechanism and the main body of the mixer can be reduced, and the work is more stable and reliable.

5. According to the utility model, the inner wall of the mixing cavity is provided with the vibration cavity, and when the ultrasonic vibration rod in the vibration cavity vibrates, ultrasonic waves penetrate through the thin plate to act on internal materials, so that the materials are oscillated and dispersed. And stirring vane disperses on the inner wall of the mixing cavity, and the combination of ultrasonic vibration stick and stirring vane makes nano material more fully and uniformly dispersed in cement paste or concrete mixture, reduces the agglomeration phenomenon of cement particles, promotes the development of dispersion phenomenon, and convenient operation reduces the problems of dry mixing and agglomeration of material mixing, simultaneously makes the material more uniform, and the reaction is more sufficient, and promotes the construction quality.

6. The utility model is also provided with a traction rod, a pair of supporting legs and a pair of wheels; the supporting legs are arranged on one side, close to the discharge port, of the chassis device, the wheels are arranged on one side, close to the feed port, of the chassis device, the traction rods are arranged on the front portion of the chassis device, the machine body is light and convenient to move, and the chassis device is suitable for complex environments such as construction sites.

Note that the description of these effects does not hinder the existence of other effects. One embodiment of the present utility model does not necessarily have all of the above effects. Effects other than the above are obvious and can be extracted from the description of the specification, drawings, claims, and the like.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a side sectional view of a mixing device according to an embodiment of the present example.

Fig. 3 is a schematic diagram of a vibration cavity according to an embodiment of the present utility model.

Fig. 4 is a schematic view showing the distribution of the discharging blade and the stirring blade in the apparatus according to the embodiment of the present example.

Fig. 5 is a schematic view of a first shutter according to an embodiment of the present utility model.

In the figure: 1. a feed buffer device; 2. a first shutter; 3. a feeding device; 4. a mixing device; 5. a discharging device; 6. a discharge port; 7. a second shutter; 8. a controller; 9. a water pump; 10. a support rod; 11. a traction rod; 12. stirring blades; 13. an ultrasonic vibration rod; 14. a vibration chamber; 141. a cover plate; 142. a hinge; 143. a vibrating cavity door bolt; 144. a thin plate; 15. a door bolt; 16. a hinge; 17. a power supply; 18. and a discharging blade.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1, the concrete mixer is an embodiment of the concrete mixer according to the utility model, and comprises a feeding device 3, a mixing device 4, a discharging device 5 and a chassis device.

The feeding device 3, the mixing device 4 and the discharging device 5 are sequentially communicated to form a mixer main body, wherein the feeding device 3 and the discharging device 5 are conical, and the wide ends of the feeding device 3 and the discharging device 5 are respectively communicated with the mixing device 4 to form a double-conical mixer main body.

The mixer main body is arranged on the chassis device, the mixing device 4 is connected with the chassis device through a transmission mechanism, and the transmission mechanism is connected with the first driving mechanism; the feeding device 3 is provided with a feeding hole, and a first baffle door 2 is arranged at the feeding hole.

As shown in fig. 2, the mixing device 4 is provided with a mixing cavity, and the inner wall of the mixing cavity is provided with a plurality of vibrating cavities 14 and stirring blades 12; the vibration chambers 14 and the stirring blades 12 are arranged at intervals in the circumferential direction; an ultrasonic vibration rod 13 and a power supply 17 are arranged in the vibration cavity 14; the ultrasonic vibration rod 13 is connected with a power supply 17, and the power supply 17 supplies power to the ultrasonic vibration rod 13; the steel plate of the vibration cavity 14 at the side closest to the mixing cavity is a thin plate 144, the ultrasonic transducer of the ultrasonic vibration rod 13 is clung to the thin plate, and preferably, the ultrasonic transducer of the ultrasonic vibration rod 13 is clung to the thin plate 144 and is fixed by bolts; the stirring vane 12 has a curved section 1201; the ultrasonic vibration bars 13 and the stirring blades 12 are arranged at intervals along the circumferential direction, so that the mixed concrete is reduced to be stuck on the inner wall of the mixing device 4, and the materials can be mixed better under the interaction of the stirring blades 12 and the ultrasonic vibration bars 13.

As shown in fig. 3, a cover plate 141 is arranged outside the vibration cavity 14, and the cover plate 141 is connected with the outer wall of the mixing cavity through a hinge 142; the cover plate 141 is provided with a vibrating cavity door bolt 143.

According to the present embodiment, it is preferable that the cover 141 is provided with a projection on the inner side thereof, the position of which corresponds to the ultrasonic vibration rod 13, and the projection on the inner side abuts against the ultrasonic vibration rod 13 after the cover 141 is closed, so that the position of the ultrasonic vibration rod 13 and the inner wall of the vibration chamber remain fixed and the vibration is transmitted.

The inner wall of the mixing cavity is provided with a vibration cavity, and when an ultrasonic vibration rod in the vibration cavity vibrates, ultrasonic waves penetrate through the thin plate 144 to act on internal materials, so that the materials are oscillated and dispersed.

According to the present embodiment, preferably, the stirring blade 12 is a combination of high and low blades.

As shown in fig. 4, the discharging device 5 is provided with a discharging hole 6, a second blocking door 7 is arranged at the discharging hole 6, and a pair of discharging blades 18 are arranged on the inner wall of the discharging device 5.

According to the present embodiment, it is preferable to further include a feed buffer device 1; the feeding buffer device 1 comprises a hopper and a supporting base, a baffle is arranged at the inlet of the hopper, a valve is arranged on the baffle, the outlet of the hopper is connected with the feeding inlet of the feeding device 3, the bottom of the outlet of the hopper is connected with the supporting base through a rotating part, and the rotating part is connected with a second driving mechanism.

According to the embodiment, preferably, the angle β of the conveying pipeline of the hopper is 135 °, so that the strength of the feed is not too high, the blockage of the pipeline or the feed inlet is reduced, the bottom pressure of the pipeline is reduced, and the service life is prolonged.

According to this embodiment, preferably, two sides of the first shutter 2 are respectively connected with the feed inlet 6 of the feed device 3 through hinges 16, and a door bolt 15 is further provided on the first shutter 2, as shown in fig. 5.

According to the present embodiment, preferably, the transmission mechanism includes a ring gear and a gear shaft;

a gear ring is arranged on the circumference of the outer wall of the mixing device 4; the chassis device is provided with a gear shaft, the gear shaft is provided with a gear, and the gear ring is meshed with the gear; the gear shaft is connected with a first driving mechanism.

Further, two gear rings are arranged on the circumference of the outer wall of the mixing device 4; gear shafts are respectively arranged on two sides of the chassis device, two gears are arranged on the gear shafts, and gear rings are respectively meshed with the gears corresponding to the gears; the gear shaft is connected with a first driving mechanism.

According to the present embodiment, it is preferable to further include a water pump 9 and a water pipe, one end of which is connected to the water pump 9.

According to the present embodiment, preferably, the chassis device is further provided with a support bar 10; the supporting rod 10 is provided with a hook, the discharging device 5 is provided with a circular hole, and the hook is hung on the circular hole, so that the stirrer can be stabilized on the chassis during towing.

According to the present embodiment, it is preferable to further include a traction bar 11, a pair of support legs, and a pair of wheels; the supporting legs are arranged on one side of the chassis device, which is close to the discharge port 6, the wheels are arranged on one side of the chassis device, which is close to the feed port, and the traction rod 11 is arranged on the front part of the chassis device.

Preferably, the chassis device adopts a steel plate welding structure, ensures the stable strength during working, and is provided with a traction rod for towing.

According to the present embodiment, it is preferable that the chassis further comprises a controller 8, the controller 8 being provided on the chassis device; the controller 8 is respectively connected with the ultrasonic vibration rod 13, the first driving mechanism, the second driving mechanism, the valve and the water pump 9, so that the control is more convenient. Preferably, the controller 8 is provided with an operating rod for controlling the lifting of the feeding buffer device 1, an operating button for controlling the water pump 9 to be switched on and off, and a time relay for controlling the water injection time of the water pump 9.

The process of mixing nano materials by the concrete mixer is as follows:

taking the mixing and reacting of nano silicon dioxide and cement as an example, firstly, opening a cover plate 141 on a mixing cavity 14, starting a power supply 17 to enable an ultrasonic vibration rod 13 to start generating ultrasonic waves, then covering the cover plate 141, opening a valve at the inlet of a hopper of a feeding buffer device 1, loading materials, closing the valve, opening a first baffle door 2, controlling a second driving mechanism by an operating rod of a controller 8 to drive a rotating part to rotate, and enabling the tail end of the hopper to be fed into a feeding port when the hopper of the feeding buffer device 1 rises to the highest position; when materials are fed into the mixer, the operating rod controls the feeding buffer device 1 to descend, at the moment, the first baffle door 2 is closed, an operating button in the controller 8 is pressed, the gear shaft is controlled to drive the mixer main body to rotate, the stirring blades 12 enable the materials to lift and fall and simultaneously to axially and reciprocally stir, after the materials are uniformly stirred, the first baffle door 2 is opened, the controller 8 controls the water pump 9 to work, water is injected through the water pipe, a time relay in the controller 8 controls the running time of the water pump 9, the water consumption required by mixing concrete is controlled according to the time relay, after the water injection is finished, the water pipe is taken out, the first baffle door 2 is closed, the mixer is continuously started, and the materials are fully mixed and stirred under the interaction of the rotation of the ultrasonic vibration rod 13 and the mixer main body;

after the reaction is finished, the second baffle door 7 of the discharge hole 6 is opened, the controller 8 controls the gear shaft to reversely rotate, the rotation direction of the mixing device 4 is changed, and concrete is slowly discharged from the discharge hole 6 under the action of the stirring blades 12 and the discharge blades 18.

The utility model is simple and convenient and easy to operate, when the ultrasonic vibration rod vibrates, the ultrasonic transducer of the ultrasonic vibration rod 13 is tightly attached to the thin plate 144 and is fixed through the bolts, and the ultrasonic wave penetrates through the thin plate to act on the internal materials to vibrate and disperse the materials. And stirring vane disperses on the inner wall of the mixing cavity, and the combination of ultrasonic vibration stick and stirring vane makes the nanometer material more fully and uniformly disperse in cement paste or concrete mixture, destroys the cement particle agglomeration phenomenon, reduces the dry mixing and agglomeration problems of material mixing, promotes the development of dispersion phenomenon, and convenient operation, and the mixing is more uniform, and the reaction is more abundant, promotes construction quality. The utility model can quickly and simply uniformly mix and react materials, has light weight and convenient movement, and is suitable for complex environments such as construction sites and the like.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. The concrete mixer is characterized by comprising a feeding device (3), a mixing device (4), a discharging device (5) and a chassis device;

the feeding device (3), the mixing device (4) and the discharging device (5) are sequentially communicated to form a stirrer main body, the stirrer main body is arranged on the chassis device, the mixing device (4) is connected with the chassis device through a transmission mechanism, and the transmission mechanism is connected with the first driving mechanism; the feeding device (3) is provided with a feeding hole, and a first baffle door (2) is arranged at the feeding hole;

the mixing device (4) is provided with a mixing cavity, the inner wall of the mixing cavity is provided with a vibration stirring mechanism, and the vibration stirring mechanism comprises a plurality of vibration cavities (14) and stirring blades (12); the vibrating cavities (14) and the stirring blades (12) are arranged at intervals along the circumferential direction; an ultrasonic vibration rod (13) and a power supply (17) are arranged in the vibration cavity (14); the ultrasonic vibration rod (13) is connected with a power supply (17); the steel plate of the vibration cavity (14) at the side closest to the mixing cavity is a thin plate (144), and the ultrasonic transducer of the ultrasonic vibration rod (13) is tightly attached to the thin plate; the stirring blade (12) has a curved section (1201);

the discharging device (5) is provided with a discharging hole (6), a second blocking door (7) is arranged at the discharging hole (6), and a pair of discharging blades (18) are arranged on the inner wall of the discharging device (5).

2. The concrete mixer according to claim 1, characterized in that the ultrasonic transducer of the ultrasonic vibration bar (13) is attached to the thin plate (144) and is fixed by bolts.

3. A concrete mixer according to claim 1, characterized by further comprising a feed buffer (1); the feeding buffer device (1) comprises a hopper and a supporting base, a baffle is arranged at the inlet of the hopper, a valve is arranged on the baffle, the outlet of the hopper is connected with the feeding port of the feeding device (3), the bottom of the outlet of the hopper is connected with the supporting base through a rotating part, and the rotating part is connected with a second driving mechanism; the conveying pipeline of the hopper is provided with a folding angle, and the folding angle beta is 135 degrees.

4. The concrete mixer according to claim 1, characterized in that a cover plate (141) is arranged outside the vibration cavity (14), and the cover plate (141) is connected with the outer wall of the mixing cavity through a hinge (142); and a vibrating cavity door bolt (143) is arranged on the cover plate (141).

5. The concrete mixer according to claim 1, characterized in that the two sides of the first shutter (2) are respectively connected with the feed inlet (6) of the feed device (3) through hinges (16), and the first shutter (2) is further provided with a door bolt (15).

6. The concrete mixer of claim 1 wherein the drive mechanism includes a gear ring and a gear shaft;

a gear ring is arranged on the circumference of the outer wall of the mixing device (4); the chassis device is provided with a gear shaft, the gear shaft is provided with a gear, and the gear ring is meshed with the gear; the gear shaft is connected with a first driving mechanism.

7. A concrete mixer according to claim 6, characterized in that two gear rings are arranged on the circumference of the outer wall of the mixing device (4); gear shafts are respectively arranged on two sides of the chassis device, two gears are arranged on the gear shafts, and gear rings are respectively meshed with the gears corresponding to the gears;

the gear shaft is connected with a first driving mechanism.

8. The concrete mixer according to claim 1, characterized by further comprising a water pump (9) and a water pipe, one end of which is connected to the water pump (9).

9. A concrete mixer according to claim 1, characterized in that the chassis arrangement is further provided with a support bar (10); the support rod (10) is provided with a hook, the discharging device (5) is provided with a circular hole, and the hook is hung on the circular hole.

10. The concrete mixer according to claim 1, characterized by further comprising a traction bar (11), a pair of support feet and a pair of wheels; the supporting legs are arranged on one side, close to the discharge port (6), of the chassis device, the wheels are arranged on one side, close to the feed port, of the chassis device, and the traction rods (11) are arranged on the front portion of the chassis device.