CN112248229A

CN112248229A - Concrete mixer

Info

Publication number: CN112248229A
Application number: CN202011000058.8A
Authority: CN
Inventors: 李光龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-01-22

Abstract

The application discloses a concrete mixer, wherein the concrete mixer comprises a mixer shell, a driving device, a control unit, a raw material feeding device, a quantitative feeding device, a dry mixing device, a wet mixing device and a final mixing device; the mixer shell plays a role in bearing each part of the concrete mixer; the raw material feeding device plays a role in conveying concrete raw materials into the stirrer; the quantitative feeding device plays a role in orderly outputting different raw materials in different raw material feeding devices according to a proportion; the dry mixing device is positioned below the quantitative feeding device and plays a role in uniformly mixing the raw materials of the concrete under the state of not adding water; the wet mixing device is positioned in the stirrer shell and below the dry mixing device, and plays a role in mixing the concrete which is uniformly mixed by dry mixing with the concrete liquid raw material; the final mixing device is positioned in the mixer shell and below the wet mixing device, and plays a role in further mixing the concrete mixed by the wet mixing device.

Description

Concrete mixer

Technical Field

The invention relates to the technical field of concrete construction equipment, in particular to a concrete mixer.

Background

The concrete is one of the most important civil engineering materials in the present generation, and is an artificial stone material prepared by a cementing material, a granular material, water, an additive and an admixture which are added if necessary according to a certain proportion, and the artificial stone material is formed by uniformly stirring, closely molding, curing and hardening; the concrete has the characteristics of rich raw materials, low price, simple production process, high compressive strength, good durability, wide strength grade range and the like, so the concrete is widely applied to civil engineering, shipbuilding, mechanical industry, ocean development, geothermal engineering and the like; in the concrete manufacturing process, the concrete mixing is particularly important, and a concrete mixer is generally used for mixing the concrete in order to improve the mixing efficiency and reduce the labor intensity.

The concrete mixer is a machine for mixing and stirring cement, gravel aggregate and water into a concrete mixture; the device mainly comprises a mixing barrel, a feeding and discharging mechanism, a water supply system, a prime motor, a transmission mechanism, a frame, a supporting device and the like.

In the prior art, the concrete mixer is limited by the structure and the feeding mode, and the problems of uneven mixing of concrete raw materials, poor mixing effect, low working efficiency and the like often exist.

Disclosure of Invention

The embodiment of the application provides a concrete mixer, has solved the problem that the concrete raw material that concrete mixer exists stirs inhomogeneous, mixer work efficiency is low among the prior art, has realized that concrete mixer is high-efficient, high-quality carries out the technological effect of concrete mixing work.

The embodiment of the application provides a concrete mixer, which comprises a mixer shell, a driving device, a control unit, a raw material feeding device, a quantitative feeding device, a dry mixing device, a wet mixing device and a final mixing device, wherein the raw material feeding device is arranged on the mixer shell;

the mixer shell is a shell of the concrete mixer and plays a role in bearing each part of the concrete mixer;

the raw material feeding devices have the function of conveying concrete raw materials into the mixer, the main body is horn-shaped and is positioned at the top of the mixer shell, the number of the raw material feeding devices is two or more, and each raw material feeding device is respectively used for conveying different concrete raw materials into the concrete mixer;

the quantitative feeding device is positioned at the bottom of the raw material feeding device, is attached to the raw material feeding device and has the same number as the raw material feeding device, and the quantitative feeding device and the raw material feeding device are in one-to-one correspondence to play a role in orderly outputting different raw materials in different raw material feeding devices in proportion;

the dry mixing device comprises a dry mixing device main body and a stirring rod of the dry mixing device, wherein the dry mixing device main body is used for containing concrete non-liquid raw materials, and the stirring rod of the dry mixing device is positioned on the dry mixing device main body and is used for mixing concrete;

the dry mixing device is positioned below the quantitative feeding device and plays a role in uniformly mixing the raw materials of the concrete under the state of not adding water;

the wet mixing device is positioned in the stirrer shell and below the dry mixing device, and comprises a spraying device, a wet mixing device shell and a wet mixing impeller;

the spraying device is positioned on the side wall of the mixer shell and plays a role of adding liquid raw materials into the concrete after the dry mixing entering the wet mixing device shell is finished;

the wet mixing device shell is fixedly connected to the inner wall of the stirrer shell, and the main body of the wet mixing device shell is a cylindrical container which is axially vertical to the height direction of the stirrer shell and is used for providing a space for mixing a solid raw material and a liquid raw material of concrete;

the wet mixing impeller is rotatably and fixedly connected to the wet mixing device shell and is driven by the driving device to rotate, so that the effect of mixing the dry-mixed concrete with the concrete liquid raw material is achieved;

the final mixing device is positioned in the mixer shell and below the wet mixing device, and plays a role in further mixing the concrete mixed by the wet mixing device.

A raw material feeding device mounting opening, a stirrer discharging device, a water inlet, a bearing support and a stirrer support are further positioned on the stirrer shell;

the raw material feeding device mounting ports are arranged at the top of the stirrer shell, the number of the raw material feeding device mounting ports is the same as that of the raw material feeding devices, and the raw material feeding devices are mounted and positioned;

the mixer discharging device is positioned at the bottom of the mixer shell and is essentially a switch, and the mixer discharging device plays a role of outputting mixed concrete to the concrete mixer;

the water inlet is arranged on the side wall of the stirrer shell and is used for being connected with a water source to supply concrete liquid raw materials for the wet mixing device;

the bearing support is positioned on the side wall of the mixer shell and plays a role in bearing the quantitative feeding device, the dry mixing device and the wet mixing device;

the mixer support is positioned at the bottom of the mixer and plays a role in supporting the mixer so as to facilitate the output of finished concrete.

The quantitative feeding device further comprises a feeding wheel, a feeding wheel shaft and a feeding wheel clapboard;

the feeding wheel main body is a wheel with an H-shaped longitudinal section, the feeding wheel is positioned on the feeding wheel shaft, and the axis of the feeding wheel is superposed with the axis of the feeding wheel shaft;

the feeding wheel partition plates are positioned on the feeding wheel and divide the feeding wheel into a plurality of subareas;

the feeding wheel shaft can be fixedly connected to the stirrer shell in a rotatable mode through the bearing support and driven by the driving device to rotate, and different rotating speeds of the feeding wheel can achieve the purpose that concrete non-liquid raw materials are conveyed into the stirrer in proportion;

the dry mixing device main body comprises a dry mixing device clapboard and a dry mixing device main body shaft;

the main body of the dry mixing device is a wheel with an H-shaped longitudinal section, and a clapboard of the dry mixing device is positioned on the main body;

the partition plates of the dry mixing device are straight plates, the main body of the dry mixing device is uniformly divided into a plurality of storage spaces in a fan-shaped column shape, a stirring rod of the dry mixing device is positioned in each storage space, and the stirring rod of the dry mixing device plays a role in mixing concrete raw materials under the action of the driving device;

the concrete raw material output from the quantitative feeding device enters the dry mixing device under the influence of self gravity, the dry mixing device main body is positioned on the dry mixing device main body shaft, and the axis of the dry mixing device main body shaft is coincident with the axis of the dry mixing device main body;

the dry mixing device main body shaft can be rotationally and fixedly connected to the stirrer shell through the bearing support and can rotate under the driving of the driving device.

The spraying device further comprises a spraying device water inlet, a spraying pump and a spraying assembly;

the water inlet of the spraying device is communicated with the water inlet and is used for supplying concrete liquid raw materials to the spraying pump;

the spray pump is used for pumping water to the spray assembly;

the spraying assembly has the function of spraying the liquid raw materials to the concrete after dry mixing so as to accelerate the mixing efficiency of the concrete after dry mixing and the liquid raw materials of the concrete;

the wet mixing device shell comprises a wet mixing device feeding port and a wet mixing device discharging component;

the feed inlet of the wet mixing device is positioned at the top of the shell of the wet mixing device and is used for mixing the finished concrete through dry mixing;

the discharging component of the wet mixing device is essentially a switch, is positioned at the bottom of the shell of the wet mixing device, and plays a role of timely opening to output the concrete mixed by adding water to the shell of the wet mixing device.

The wet mixing impeller comprises a wet mixing impeller frame and a wet mixing impeller hinge plate;

the wet mixing impeller frame is an impeller with grid-shaped blades and is used for mixing concrete;

the wet mixing impeller hinged plate main body is in a plate shape, and the number of the wet mixing impeller hinged plate main body is doubled to that of the wet mixing impeller;

one end of the wet mixing impeller hinged plate is rotatably and fixedly connected to the wet mixing impeller frame, and the axial direction of the hinged shaft is the same as that of the wet mixing impeller frame;

the wet mixing impeller frame also comprises a wet mixing impeller hinged plate angle limiting device;

the wet mixing impeller hinged plate angle limiting device is a bulge on the wet mixing impeller frame and plays a role in limiting the rotation angle of the wet mixing impeller hinged plate to be 0-90 degrees;

when the wet mixing impeller rotates forwards, the hinge plate of the wet mixing impeller receives the resistance from the concrete and forms an included angle of approximately 90 degrees with the frame of the wet mixing impeller, and the wet mixing impeller plays a role in mixing the concrete;

when the wet mixing impeller rotates reversely, an included angle between the resistance of concrete and the frame of the wet mixing impeller disappears, the blade structure of the wet mixing impeller is converted into a plate-shaped structure from a grid shape, the discharging assembly of the wet mixing device is opened, and the wet mixing impeller outputs the concrete in the shell of the wet mixing device in the rotating process.

The final mixing device further comprises a central rotating shaft, a stirring rod, a material cleaning plate and a final mixing bin;

the central rotating shaft is rotatably and fixedly connected to the bottom of the stirrer shell, the axial direction of the central rotating shaft is the same as the height direction of the stirrer, and the central rotating shaft is driven by the driving device;

the stirring rod is a long rod, one end of the stirring rod is fixedly connected to the central rotating shaft, and the stirring rod is one or more in number and plays a role in stirring concrete;

the main body of the material cleaning plate is a rectangular plate, one end of the rectangular plate is fixedly connected to the side wall of the central rotating shaft, and the fixedly connected position is the side wall close to the bottom surface of the stirrer shell;

one end of the material cleaning plate close to the bottom surface of the mixer shell is attached to the bottom surface of the mixer shell, so that the effect of assisting the mixer discharging device to output the manufactured concrete to the mixer is achieved;

the final mixing bin is a cylindrical space which is formed in the stirrer shell according to the length of the stirring rod, and the final mixing bin plays a role in avoiding the insufficient concrete stirring caused by the fact that part of concrete cannot be contacted with the stirring rod.

Preferably, the stirring rod of the final mixing device further comprises a mixing blade and a mixing blade angle limiting device;

the mixing blade is rotatably and fixedly connected to the stirring rod and the angle of the mixing blade is limited by the mixing blade angle limiting device;

the structure of the mixing blade angle limiting device is the same as that of the wet mixing impeller hinged plate angle limiting device;

preferably also comprises pumping means;

the pumping device comprises a mud pump and a mud conveying pipe, and the mud pump is positioned on the mixer support and plays a role in pumping concrete;

the mud conveying pipe is used for conveying concrete;

the mud conveying pipe comprises a first mud conveying pipe and a second mud conveying pipe, two ends of the first mud conveying pipe are respectively connected with the final mixing bin and the mud pump, and one end of the second mud conveying pipe is connected with the mud pump, and the other end of the second mud conveying pipe is communicated with the outside of the mixer;

the pumping device plays a role in outputting concrete in the mixer out of the mixer.

The preferable mud conveying pipe also comprises a third mud conveying pipe;

the mixer housing further comprises a concrete inlet;

the concrete inlet is positioned at the top of the stirrer shell and is positioned right above the dry mixing device;

one end of the third mud conveying pipe is connected with the mud pump, the other end of the third mud conveying pipe is connected with the concrete inlet, and the pumping device plays a role in conveying the stirred concrete into the stirrer again from the top of the stirrer.

The discharging device of the stirrer further comprises a discharging switch plate, a rotating shaft of the discharging switch plate, an opening and closing assembly of the discharging switch plate and a side guard plate;

the discharging switch plate is rotatably and fixedly connected to the bottom of the stirrer shell through the rotating shaft of the discharging switch plate;

the discharging switch plate opening and closing assembly controls the opening and closing of the discharging switch plate;

the side guard plates are positioned at two sides of the discharging switch plate and fixedly connected on the mixer shell, and play a role in forming a U-shaped channel with the discharging switch plate when the discharging switch plate is opened so as to avoid overflow when the finished concrete is output.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

the quantitative feeding device, the dry mixing device, the wet mixing device and the final mixing device are arranged on the concrete mixer, so that the raw materials are mixed for a small amount of times and dry-wet separation, the uniformity of the produced concrete is guaranteed in a mode of producing a small amount of concrete by single mixing, and the mixing time consumed by uniformly mixing the concrete is reduced by the mixing means of dry-wet separation, so that the production efficiency of the concrete is increased; the problems of uneven mixing of concrete raw materials and low working efficiency of the mixer existing in the concrete mixer in the prior art are effectively solved, and the technical effect of carrying out concrete mixing work on the concrete mixer in a high-efficiency and high-quality mode is further achieved.

Drawings

FIG. 1 is a cross-sectional view of a concrete mixer of the present invention showing the positional relationship of the components of the concrete mixer;

FIG. 2 is a schematic diagram of the internal structure of the concrete mixer of the present invention, which is used for showing the structure of each component of the concrete mixer;

FIG. 3 is a schematic external view of the concrete mixer of the present invention;

FIG. 4 is a schematic view showing the construction of a dry blending unit of the concrete mixer of the present invention;

FIG. 5 is a schematic structural view of a wet mixing impeller of a concrete mixer according to the present invention in a forward rotation state;

FIG. 6 is a schematic view showing the structure of a wet mixing impeller of a concrete mixer according to the present invention in a counter-rotating state;

FIG. 7 is a schematic view of the construction of a wet mixing impeller of the concrete mixer of the present invention;

FIG. 8 is a schematic view showing the construction of a final mixing device of the concrete mixer according to the present invention;

in the figure:

a mixer housing 100, a raw material feeding device mounting port 110, a mixer discharging device 120, a concrete inlet 130, a water inlet 140, a bearing support 150, and a mixer support 160;

a raw material feeding device 200;

a quantitative feeding device 300, a feeding wheel 310, a feeding wheel shaft 320 and a feeding wheel partition 330;

a dry blending device 400, a dry blending device main body 410, a dry blending device partition 411, a dry blending device main body shaft 412, and a dry blending device stirring rod 420;

the wet mixing device comprises a wet mixing device 500, a spraying device 510, a spraying device water inlet 511, a spraying pump 512, a spraying assembly 513, a wet mixing device shell 520, a wet mixing device feed inlet 521, a wet mixing device discharge assembly 522, a wet mixing impeller 530, a wet mixing impeller frame 531 and a wet mixing impeller hinge plate 532;

a final mixing device 600, a central rotating shaft 610, a stirring rod 620, a mixing blade 621, a material cleaning plate 630 and a final mixing bin 640;

a driving device 700;

the device comprises a pumping device 800, a mud pump 810, a mud conveying pipe 820, a first mud conveying pipe 821, a second mud conveying pipe 822 and a third mud conveying pipe 823.

Detailed Description

In order to facilitate an understanding of the present invention, the present application will now be described more fully with reference to the accompanying drawings; the preferred embodiments of the present invention are illustrated in the accompanying drawings, but the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is noted that the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to FIG. 1, a cross-sectional view of a concrete mixer according to the present invention is shown; the concrete mixer comprises a mixer shell 100, a raw material feeding device 200, a quantitative feeding device 300, a dry mixing device 400, a wet mixing device 500, a final mixing device 600, a driving device 700 and a control unit; according to the concrete mixer, the quantitative feeding device 300, the dry mixing device 400, the wet mixing device 500 and the final mixing device 600 are arranged, raw materials are mixed for a small amount of times and dry-wet separation, the uniformity of the produced concrete is guaranteed in a mode that a small amount of concrete is produced by single mixing, and the mixing time consumed by uniformly mixing the concrete is shortened by a mixing means of dry-wet separation, so that the production efficiency of the concrete is increased.

The mixer shell 100 is a concrete mixer shell and plays a role in bearing various parts of the concrete mixer; a raw material feeding device mounting opening 110, a stirrer discharging device 120, a water inlet 140, a bearing support 150 and a stirrer support 160 are positioned on the stirrer shell 100; the raw material feeding device mounting openings 110 are arranged at the top of the mixer housing 100, the number of the raw material feeding devices is the same as that of the raw material feeding devices 200, and the raw material feeding devices 200 are mounted and positioned; the mixer discharge 120, shown in FIG. 2, is positioned at the bottom of the mixer housing 100 and is essentially a switch that functions to deliver mixed concrete out of the concrete mixer; further, the discharging device 120 of the stirring machine comprises a discharging switch plate, a rotating shaft of the discharging switch plate, an opening and closing component of the discharging switch plate and a side guard plate; the discharging switch plate is rotatably and fixedly connected to the bottom of the stirrer shell 100 through the rotating shaft of the discharging switch plate, the opening and closing assembly of the discharging switch plate controls the opening and closing of the discharging switch plate, and the structure of the discharging switch plate can be a telescopic rod; the side guard plates are positioned at two sides of the discharging switch plate and are fixedly connected to the mixer shell 100, so that a U-shaped channel is formed between the side guard plates and the discharging switch plate when the discharging switch plate is opened, and the overflow of finished concrete during output is avoided; the water inlet 140 is disposed on the side wall of the mixer housing 100 and is used for connecting with a water source to supply the wet mixing device 500 with concrete liquid raw materials; the bearing support 150 is positioned on the side wall of the mixer housing 100 and plays a role of bearing the quantitative feeding device 300, the dry mixing device 400 and the wet mixing device 500; the mixer support 160 is positioned at the bottom of the mixer to support the mixer so as to facilitate the output of the finished concrete.

The raw material feeding device 200 plays a role of conveying concrete raw materials into the mixer, as shown in fig. 1 or fig. 2, the main body of the raw material feeding device 200 is horn-shaped, and is positioned at the top of the mixer housing 100 through a raw material feeding device mounting port 110, the number of the raw material feeding devices is two or more, and each raw material feeding device 200 is respectively used for conveying different concrete raw materials (cement, gravel aggregate, concrete admixture and the like) into the concrete mixer; in the case of manufacturing the sand-free concrete, it is preferable that the number of the raw material feeding means 200 is two, and the two raw material feeding means are used for feeding cement and coarse aggregate into the concrete mixer.

As shown in fig. 1 or 2, the quantitative feeding device 300 is positioned at the bottom of the raw material feeding device 200, is attached to the raw material feeding device 200 and has the same number as that of the raw material feeding device 200, and the quantitative feeding device 300 and the raw material feeding device 200 correspond to each other one-to-one to output different raw materials in different raw material feeding devices 200 in order according to a ratio; further, the quantitative feeding device 300 comprises a feeding wheel 310, a feeding wheel shaft 320 and a feeding wheel partition 330; the feeding wheel 310 is shown in fig. 1 or 2, the main body of the feeding wheel is a wheel with an H-shaped longitudinal section, the feeding wheel 310 is positioned on the feeding wheel shaft 320, and the axis of the feeding wheel 310 is coincident with the axis of the feeding wheel shaft 320; the feed wheel partitions 330 are positioned on the feed wheel 310 and divide the feed wheel 310 into a plurality of sections; the feeding wheel shaft 320 is rotatably and fixedly connected to the mixer housing 100 through the bearing support 150 and is driven to rotate by the driving device 700; the invention realizes the proportional delivery of concrete non-liquid raw materials into the interior of the mixer through different rotating speeds of the feeding wheel 310 on different quantitative feeding devices 300.

As shown in fig. 2 or 4, the dry blending device 400 is positioned at the lower end of the quantitative feeding device 300, and the dry blending device 400 includes a dry blending device main body 410 and a dry blending device stirring rod 420, and plays a role of uniformly mixing the raw materials of the concrete in a state of not adding water; the dry mixing device main body 410 comprises a dry mixing device partition 411 and a dry mixing device main body shaft 412; the dry mixing device main body 410 is a wheel with an H-shaped longitudinal section, a dry mixing device partition 411 is positioned on the wheel, the dry mixing device partition 411 is a straight plate, the dry mixing device main body 410 is uniformly divided and forms a plurality of fan-shaped column-shaped storage spaces, a dry mixing device stirring rod 420 is positioned in each storage space, and the dry mixing device stirring rods 420 play a role of mixing concrete raw materials under the action of the driving device 700; the concrete raw material discharged from the quantitative charging device 300 enters the dry mixing device 400 under the influence of self gravity; the dry blending device body 410 is positioned on the dry blending device body shaft 412, and the axis of the dry blending device body shaft 412 is coincident with the axis of the dry blending device body 410; the dry blending device main body shaft 412 is rotatably and fixedly connected to the mixer housing 100 through the bearing support 150 and is driven to rotate by the driving device 700.

As shown in fig. 1 or 2, the wet mixing device 500 is located inside the mixer housing 100 below the dry mixing device, and the wet mixing device 500 includes a spraying device 510, a wet mixing device housing 520 and a wet mixing impeller 530.

The spraying device 510 is positioned on the water inlet 140 of the mixer housing 100 and plays a role of adding liquid raw materials (water or a mixture of concrete admixture and water) into the concrete after the dry mixing entering the wet mixing device housing 520; the spraying device 510 comprises a spraying device water inlet 511, a spraying pump 512 and a spraying assembly 513; the water inlet 511 of the spraying device is communicated with the water inlet 140 and is used for supplying liquid raw materials for the spraying pump 512; the spray pump 512 is used for pumping water to the spray assembly 513, and the spray assembly 513 plays a role in spraying the liquid raw material to the dry-mixed concrete so as to accelerate the mixing efficiency of the dry-mixed concrete and the liquid raw material.

The wet mixing device shell 520 is fixedly connected to the inner wall of the mixer shell 100, and the main body of the wet mixing device shell is a cylindrical container with the axial direction vertical to the height direction of the mixer shell 100; the wet mixing device shell 520 comprises a wet mixing device feeding hole 521 and a wet mixing device discharging component 522; the wet mixing device feed inlet 521 is positioned at the top of the wet mixing device shell 520 and is used for passing through the concrete after the dry mixing is finished; the discharging component 522 of the wet mixing device is essentially a switch, is located at the bottom of the wet mixing device shell 520, and plays a role of timely opening to output the concrete mixed by adding water to the wet mixing device shell 520.

As shown in fig. 1, 2, 5, 6 and 7, the wet mixing impeller 530 is rotatably and fixedly connected to the wet mixing device housing 520, and is driven by the driving device 700 to rotate, so as to mix the dry-mixed concrete with the concrete liquid material; the wet mixing impeller 530 comprises a wet mixing impeller frame 531 and a wet mixing impeller hinge plate 532; as shown in fig. 5 to 5, the wet mixing impeller frame 531 is an impeller with grid-shaped blades for mixing concrete; the wet mixing impeller hinge plate 532 is plate-shaped, and the number of the hinge plates is doubled than that of the wet mixing impellers 530; one end of the wet mixing impeller hinge plate 532 is rotatably and fixedly connected to the wet mixing impeller frame 531, and the axial direction of the hinge shaft is the same as that of the wet mixing impeller frame 531; the wet mixing impeller frame 531 also comprises a wet mixing impeller hinge plate angle limiting device, the wet mixing impeller hinge plate angle limiting device is a protrusion on the wet mixing impeller frame 531, and plays a role in limiting the rotation angle of the wet mixing impeller hinge plate 532 to 0-90 degrees; as shown in fig. 6 or 7, when the wet mixing impeller 530 rotates forward, the wet mixing impeller hinge plate 532 forms an angle of approximately 90 degrees with the wet mixing impeller frame 531 due to the resistance from the concrete, and the wet mixing impeller 530 acts as a mixer; as shown in fig. 5, when the wet mixing impeller 530 rotates reversely, the angle between the resistance of the concrete applied to the hinge plate 532 of the wet mixing impeller and the frame 531 of the wet mixing impeller disappears, the blade structure of the wet mixing impeller 530 is transformed from the grid shape to the plate shape, and at this time, the discharging assembly 522 of the wet mixing device is opened, and the wet mixing impeller 530 outputs the concrete inside the housing 520 of the wet mixing device during the rotation process.

As shown in fig. 1 or 2, the final mixing device 600 is positioned inside the mixer housing 100 and below the wet mixing device 500, and serves to further mix the concrete mixed by the wet mixing device 600; the final mixing device 600 comprises a central rotating shaft 610, a stirring rod 620, a material cleaning plate 630 and a final mixing bin 640; the central rotating shaft 610 is rotatably and fixedly connected to the bottom of the mixer housing, the axial direction of the central rotating shaft 610 is the same as the height direction of the mixer, and the central rotating shaft 610 is driven by the driving device 700; the stirring rod 620 is a long rod, one end of the stirring rod 620 is fixedly connected to the central rotating shaft 610, and the number of the stirring rod 620 is one or more, so that the stirring rod can play a role in mixing concrete; the main body of the material cleaning plate 630 is a rectangular plate, one end of the rectangular plate is fixedly connected to the side wall of the central rotating shaft 610, and the fixedly connected position is the side wall close to the bottom surface of the mixer housing 100; one end of the material cleaning plate 630 close to the bottom surface of the mixer housing 100 is attached to the bottom surface of the mixer housing 100, so as to play a role in assisting the mixer discharging device 120 in outputting the manufactured concrete to the mixer; as shown in fig. 1 or 3, the final mixing chamber 640 is a cylindrical space formed inside the mixer housing 100 according to the length of the mixing rod 620, and the final mixing chamber 640 serves to prevent a part of concrete from being insufficiently mixed due to the fact that the mixing rod 620 cannot reach the final mixing chamber.

Preferably, the stirring rod 620 of the final mixing device 600 further comprises a stirring blade 621 and a stirring blade angle limiting device, wherein the stirring blade is rotatably and fixedly connected to the stirring rod 620 and the angle of the stirring blade is limited by the stirring blade angle limiting device, as shown in fig. 2 or fig. 8; the structure of the mixing blade angle limiting device is the same as that of the wet mixing impeller hinged plate angle limiting device; when the demand for the finished concrete is not urgent in the operation site, the central rotating shaft 610 rotates forwards, the mixing blades 621 rotate to the mixing rod 620 under the influence of the concrete resistance, and the mixing rod 620 plays a role in mixing the concrete inefficiently and preventing the finished concrete from solidifying on the premise of reducing the evaporation of water in the concrete; when the demand for the finished concrete is urgent at the job site, the central rotating shaft 610 is reversely rotated, the mixing blades 621 are rotated to the position shown in fig. 8 under the influence of the concrete resistance, and at this time, the mixing effect of the mixing rod 620 on the concrete is increased, and the manufacturing time of the finished concrete is shortened.

The driving device plays a role in driving all parts of the stirrer to run, and the structure of the driving device can be a motor, a combination of the motor and a belt transmission system, a combination of the motor and a gear transmission system and the like.

The control unit plays a role in controlling the operation (start-stop, fast-slow rotation, forward rotation and reverse rotation) of the driving device 700, and the control unit is the prior art and is not described herein any more; preferably, the control unit is a Mitsubishi programmable PLC controller with the model number of FX3SA-10 MR-CM.

Preferably, the concrete mixer further comprises a pumping device 800; as shown in fig. 3, the pumping device 800 includes a mud pump 810 and a mud pipe 820, wherein the mud pump 810 is positioned on the mixer support 160 to pump concrete; the mud conveying pipe 820 is used for conveying concrete; the mud conveying pipe 820 comprises a first mud conveying pipe 821 and a second mud conveying pipe 822, two ends of the first mud conveying pipe 821 are respectively connected with the final mixing bin 640 and the mud pump 810, one end of the second mud conveying pipe 822 is connected with the other end of the mud pump 810 and is communicated with the outside of the mixer; the pumping device 800 functions to output the concrete inside the mixer out of the mixer.

When the concrete mixer of the present invention is actually operated, concrete raw materials are proportionally fed into the dry mixing device 400 through the raw material feeding device 200 and the quantitative feeding device 300 (at this time, the state of the dry mixing device 400 is shown in fig. 1), concrete non-liquid raw materials are uniformly mixed under the stirring of the stirring rod 420 of the dry mixing device during the feeding process, then the dry mixing device body 410 is controlled to rotate, the dry-mixed and uniform concrete is poured into the wet mixing device shell 520 and continuously carries and mixes the concrete non-liquid raw materials, the spraying device 510 is operated to spray the liquid raw materials to the concrete after the dry mixing is completed during the pouring process, the wet mixing impeller 530 is rotated forward, the mixing of the concrete containing water is performed (the spraying device 510 is continuously operated during the mixing process), the wet mixing impeller 530 is rotated backward and the wet mixing device discharging assembly 522 is operated at the same time after the concrete containing water is uniformly mixed, the concrete is output from the wet mixing device 500 and input into the final mixing device 600 for mixing, and finally discharged out of the mixer; the concrete is mixed in a small amount for many times, thereby achieving the effect of improving the effect.

Preferably, the mud pipe 820 further comprises a third mud pipe 823, and the mixer housing 100 further comprises a concrete inlet 130; the concrete inlet 130 is positioned at the top of the mixer housing 100 and directly above the dry blending apparatus 400; one end of the third mud conveying pipe 823 is connected to the mud pump 810, and the other end is connected to the concrete inlet 130, and the pumping device 800 plays a role of inputting the mixed concrete into the mixer again from the top of the mixer; in the actual operation process of the mixer, the concrete with larger water content can be selectively mixed firstly, then the concrete with larger water content is input into the mixer from the top of the mixer through the pumping device 800 and is mixed with the concrete non-liquid raw materials together, finally, finished concrete is formed, and further, the concrete manufacturing efficiency is improved.

The technical scheme in the embodiment of the application at least has the following technical effects or advantages:

the problems of uneven mixing of concrete raw materials and low working efficiency of the mixer existing in the concrete mixer in the prior art are effectively solved, and the technical effect of carrying out concrete mixing work on the concrete mixer in a high-efficiency and high-quality mode is further achieved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete mixer comprises a mixer shell, a driving device and a control unit, and is characterized by also comprising a raw material feeding device, a quantitative feeding device, a dry mixing device, a wet mixing device and a final mixing device;

2. The concrete mixer of claim 1, wherein said

A raw material feeding device mounting port, a stirrer discharging device, a water inlet, a bearing support and a stirrer support are positioned on the stirrer shell;

3. The concrete mixer of claim 2, wherein said

The quantitative feeding device comprises a feeding wheel, a feeding wheel shaft and a feeding wheel clapboard;

4. A concrete mixer according to any one of claims 1 to 3, wherein said mixer is of the type described

The spraying device comprises a spraying device water inlet, a spraying pump and a spraying assembly;

the spray pump is used for pumping water to the spray assembly;

5. The concrete mixer of claim 4, wherein said

The wet mixing impeller comprises a wet mixing impeller frame and a wet mixing impeller hinged plate;

6. The concrete mixer of claim 5, wherein said

The final mixing device comprises a central rotating shaft, a stirring rod, a material cleaning plate and a final mixing bin;

7. The concrete mixer of claim 6, wherein said

The stirring rod of the final mixing device also comprises a mixing blade and a mixing blade angle limiting device;

the structure of the mixing blade angle limiting device is the same as that of the wet mixing impeller hinged plate angle limiting device.

8. A concrete mixer according to claim 2 or claim 3, further comprising pumping means;

the mud conveying pipe is used for conveying concrete;

9. The concrete mixer of claim 8, wherein said

The mud conveying pipe also comprises a third mud conveying pipe;

the mixer housing further comprises a concrete inlet;

10. A concrete mixer according to claim 2 or 3, wherein said mixer is of the type described

The mixer discharging device comprises a discharging switch plate, a discharging switch plate rotating shaft, a discharging switch plate opening and closing assembly and a side guard plate;