WO2013067864A1

WO2013067864A1 - Coupling-synchronised vibrating stirrer with two horizontal axes

Info

Publication number: WO2013067864A1
Application number: PCT/CN2012/081957
Authority: WO
Inventors: 冯忠绪; 赵利军; 陈卫
Original assignee: 西安德通交通科技有限公司
Priority date: 2011-11-09
Filing date: 2012-09-25
Publication date: 2013-05-16
Also published as: CN102441940A; CN102441940B

Abstract

A coupling-synchronised vibrating stirrer with two horizontal axes, comprising a framework (9) and a vibrating stirring device provided thereon, a stirring driving and transmission device being provided on the left end of the vibrating stirring device, a vibrating driving and transmission device being provided on the right end of the vibrating stirring device, and the stirring driving and transmission device and the vibrating driving and transmission device being installed on the framework (9). The vibrating stirring device comprises a stirring barrel (12), and two stirring mechanisms each comprising a hollow stirring shaft (20) and a plurality of stirring units. The number of stirring driving and transmission devices is two, and they are installed on the left end of the two hollow stirring shafts (20) respectively. A synchronising coupling (5) is installed between the two stirring driving and transmission devices. The number of vibration driving and transmission devices is two and they are installed on the right end of the two hollow stirring shafts (20) respectively and are fixedly connected to two vibration shafts (16). The stirrer has rational and simple structure, is convenient to use, and can homogenise the material to be mixed in short time macroscopically and microscopically, thereby improving the quality and efficiency of stirring.

Description

Coupling synchronous double-shaft vibration mixer

[0001] The present invention relates to a mixer, and more particularly to a coupling type synchronous twin-shaft vibration mixer mainly used for agitating concrete. Background technique

[0002] The mixer is a direct device for implementing concrete mixing. Its function is to mix the prepared materials into a mixture that is uniform and meets the quality requirements. According to the working principle, it can be divided into two types: a self-dumping mixer and a forced mixer. The self-dumping mixer uses a stirring device to divide and lift the material in the mixing drum until the friction between the material and the stirring device is less than the component of the gravity that causes the material to slide down, and the material falls by its own weight, so that the materials of each part are made. The mutual position is continuously redistributed to obtain uniform mixing. The power consumption of the mixer and the wear of the wearing parts are small, but the mixing strength is not strong enough, and it is generally only suitable for mixing plastic and semi-plastic concrete. The forced mixer is a forced mixing effect of shearing, squeezing, tumbling and throwing the material by means of a rotating stirring device, so that the material is uniformly stirred in vigorous relative motion. The mixer has a strong effect on the material, good mixing quality and high productivity, but has large wear and power consumption, and has strict limits on the aggregate diameter, and is suitable for mixing dry hard concrete and lightweight aggregate concrete. In summary, the two mixers have their own technical and economic advantages. Both of them have their own, but there is a tendency for the latter to replace the former.

[0003] Although both the self-propelled mixer and the forced mixer can achieve macroscopic homogenization in a short period of time, 10% to 30% of the cement particles are still found to be tiny under the microscope. The cement mass, that is, the microscopically, did not reach uniformity. Since the hydration of the cement is only carried out on the surface of the cement particles, if the cement particles agglomerate, the area of the hydration is reduced, and the hydration product having the strength of the concrete is reduced, so the agglomeration phenomenon of the cement seriously affects The improvement of the workability and strength of concrete.

[0004] At present, a twin-shaft mixer is a widely used forced mixing device in concrete mixing work. As a conventional forced mixer, it also has the problem that the mixture is difficult to achieve microscopic uniformity, and when the stirring device is working, the speed near the central portion of the circular mixing drum is low, and the speed at the wall of the cylinder is high, so that the mixing tube There is a difference in the uniformity of the different inner ring belts, which leads to the stirring low-efficiency area in the center of the mixing drum, delaying the working time of the whole machine and leaving a quality hazard; on the other hand, the flowability of the mixed material in the inefficient area is poor. It is easy to adhere to the stirring shaft and generate a shaft-holding phenomenon. Stirring The low-efficiency zone is an inherent defect determined by the structure of conventional forced mixers, which seriously affects the quality of work and the efficiency of the mixing equipment. Summary of the invention

[0005] The object of the present invention is to overcome the deficiencies in the prior art described above, and provide a synchronous double-shaft vibration mixer of a coupling, which has the advantages of simple structure, reasonable design, convenient operation and operation, and can be made in a short time. The mixture is uniform both macroscopically and microscopically, and the mixing low efficiency zone near the stirring shaft is improved, thereby improving the mixing quality and stirring efficiency of the concrete.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a coupling synchronous double-shaft vibration mixer, comprising: a frame and a vibration stirring device fixedly mounted on the frame, The left end of the vibrating stirring device is provided with a stirring drive for generating an agitation driving force and transmitting the generated agitation driving force to the vibrating stirring device And a transmission device, the right end of the vibration stirring device is provided with a vibration driving and transmission device for generating a vibration driving force and transmitting the generated vibration driving force to the vibration stirring device, and the stirring driving and the transmission device are stirred by the stirring end The outer side plate of the cylinder is mounted on the frame, and the vibration driving and transmission device is mounted on the frame through the outer side plate of the vibrating end mixing drum, and the outer side plate of the mixing end mixing drum and the outer side plate of the vibrating end mixing drum are fixedly connected with the frame. The vibrating stirring device comprises a mixing drum fixedly mounted on the frame and a stirring mechanism provided in the mixing drum and continuously pushing the material to stir, the stirring mechanism comprising a hollow stirring installed on the cylinder of the mixing drum through a bearing The shaft and the plurality of agitating units fixedly mounted on the outer wall of the hollow agitating shaft are sequentially fixed from left to right. The two ends of the hollow agitating shaft respectively pass through the left and right ends of the mixing drum, and the hollow agitating shaft is provided with two ends respectively Passing out the vibration shaft at the left and right ends of the mixing drum; the number of the stirring mechanism is two and two stirring mechanisms are combined to form one in the mixing drum The complete agitation system for circulating the materials, the two hollow agitating shafts corresponding to the two stirring mechanisms are arranged in parallel inside the mixing drum; the number of the agitation driving and the transmission device is two, and the two agitating drives and the transmission devices are respectively installed. At the left end of the two hollow agitating shafts, a synchronous coupling is installed between the two agitating drives and the transmission device; the number of the vibration driving and the transmission device is two, and the two vibration driving and the transmission devices are respectively installed in two The right end of the hollow agitator shaft, the two vibration drives and the transmission are fixedly connected to the two vibrating shafts respectively.

[0007] The above-mentioned coupling synchronous double-shaft vibration mixer is characterized in that: the two agitation driving and transmission devices have the same structure and both include a stirring driving power source, a speed reducer, a stirring drive shaft and a stirring sleeve. a shaft, the input shaft of the reducer is drivingly connected to the stirring driving power source through a stirring end transmission belt, the output shaft of the speed reducer is connected through a reducer connecting sleeve and a spline sleeve and a stirring transmission disposed inside the connecting sleeve of the speed reducer One end of the shaft is fixedly connected, and the other end of the agitating drive shaft is fixedly connected with the agitating sleeve; the hollow agitating shaft and the left end of the vibrating shaft are both located in the agitating sleeve, and the hollow agitating shaft is fixedly connected with the agitating sleeve, The vibration shaft is sleeved with a stirring driving end inner bearing sleeve, and the stirring driving end inner bearing sleeve is provided with a stirring driving end supporting bearing, and the stirring driving end inner bearing sleeve and the stirring driving end supporting bearing are all set in stirring In the sleeve, the agitating drive end support bearing is fixedly connected with the agitating sleeve; the synchronous coupling is mounted on the two agitating drive and transmission device With stirring between the end of transmission.

[0008] The above-mentioned coupling type synchronous double-shaft vibration mixer is characterized in that: the stirring transmission shaft is sleeved with a stirring transmission shaft bearing, and the stirring transmission shaft bearing is located at the left side of the stirring sleeve. The agitating drive shaft bearing is externally mounted with a stirring drive shaft outer bearing seat, and the agitating drive shaft outer bearing seat is fixed on the outer side plate of the stirring end mixing drum.

[0009] The above-described coupling synchronous double-shaft vibration mixer is characterized in that: the two vibration driving and transmission devices are identical in structure and each comprise a vibration driving power source and a vibration sleeve, and the vibration driving power The source is connected to the vibration shaft through a vibration end transmission belt, and the vibration sleeve is sleeved on the hollow agitating shaft on the right side of the mixing cylinder and fixedly connected with the hollow agitating shaft, and the vibration sleeve is sleeved in the vibration shaft The upper eccentric bearing sleeve and the vibration bearing mounted on the eccentric bearing sleeve are fixedly connected to the vibration sleeve.

[0010] The above-mentioned coupling type synchronous double-shaft vibration mixer is characterized in that: the vibration shaft is sleeved with a vibration drive end inner bearing sleeve, and the vibration drive end inner bearing sleeve is located at the vibration sleeve. On the right side, the vibration drive end bearing sleeve is mounted with a vibration drive end support bearing, and the vibration drive end support bearing is externally mounted with a vibration drive end outer bearing seat, and the vibration drive end outer bearing seat is fixed at the vibration end stirring On the outside of the tube.

[001 1] The above-mentioned coupling type synchronous double-shaft vibration mixer is characterized in that: a stirring end eccentric block is fixedly mounted on the vibration shaft and located inside the stirring sleeve, and the vibration shaft is located on the vibration axis. A vibrating end eccentric block is fixedly mounted in the sleeve or on the right side of the vibration sleeve.

[001 2] The above-described coupling synchronous double-shaft vibration mixer is characterized in that the agitation unit comprises a solid a stirring arm connected to the outer wall of the hollow stirring shaft and a stirring blade attached to the end of the stirring arm, the angle between the stirring surface of the stirring blade and the stirring arm to be mounted, that is, the axial mounting angle of the stirring blade is 30 ° ～ 45 ° .

[0013] The above-mentioned coupling type synchronous double-shaft vibration mixer is characterized in that: the two hollow stirring shafts are respectively a first hollow stirring shaft and a second hollow stirring shaft, and are installed in the mixing drum. The agitating blade of the rightmost agitating unit of a hollow agitating shaft is a first returning blade that pushes the agitated material to the center of the mixing drum, the axial mounting angle of the first returning blade and the agitating unit installed at the leftmost end of the second hollow agitating shaft The axial mounting angle of the stirring blade corresponds to; the stirring blade of the stirring unit at the right end of the second hollow stirring shaft installed in the mixing drum is a second returning blade that pushes the stirred material to the center of the mixing drum, and the second returning blade The axial mounting angle corresponds to the axial mounting angle of the agitating blades mounted to the leftmost agitating unit of the first hollow agitating shaft.

[0014] The above-mentioned coupling synchronous double-shaft vibration mixer is characterized in that the agitation driving power source is a stirring motor, and the vibration driving power source is a vibration motor.

[0015] The above-mentioned coupling synchronous double-shaft vibration mixer is characterized in that: between the agitating drive shaft and the agitating sleeve, between the agitating drive shaft outer bearing seat and the agitating end mixing drum outer plate and The outer end of the vibration drive end bearing housing and the outer side plate of the vibrating end mixing drum are fixed by bolts.

[0016] The present invention has the following advantages over the prior art:

[001 7] 1. The structure is simple, the design is reasonable, and the operation is convenient. The mixer increases the vibration on the basis of forced stirring. When working, the vibration stirring device not only has the forced stirring effect on the mixture, but also has the vibration effect. The cement particles are in a flutter state, destroying the cement agglomerates, increasing the area of the cement hydration, thereby increasing the strength of the concrete, increasing the strength of the concrete after hardening; The viscosity and internal friction between the particles of the mixture are reduced, the moving speed is increased, the hydration of the cement is accelerated, and the cyclic flow and diffusion distribution of the components in the mixture in the low-efficiency zone (near the stirring shaft) They have also been reinforced, creating extremely favorable conditions for eliminating the agitation of low-efficiency zones and achieving rapid and uniform agitation. Therefore, the twin-shaft vibrating mixer can make the concrete mixture uniform in macroscopic and microscopic conditions in a short period of time, and improve the mixing low-efficiency zone of the machine, thereby improving the mixing quality and stirring efficiency of the concrete.

[0018] 2. The twin-shaft vibration mixer of the present invention adopts a stirring shaft, a stirring arm, a stirring blade and a vibration shaft as a vibrator. The stirring blade vibrates while stirring, the effective vibration area is large, and the distance of vibration propagation is close and distributed. Uniform, small vibration strength can make the mixture in the mixing drum get enough vibration, so the performance requirements of the bearing are low, and the bearing life is easy to guarantee.

[0019] 3. The vibration shaft of the invention is dynamically balanced according to the mechanical principle. Therefore, only the agitating shaft and the stirring arm and the blade which are eccentrically mounted on the vibration shaft generate vibration, and the vibration is directly transmitted to the mixture, and the vibration is satisfied. The vibration axis of the dynamic balance condition does not vibrate itself, which better eliminates the adverse effects of vibration on other parts of the machine. At the same time, the hollow agitator shaft adopts a single-end eccentric mounting structure, the eccentric amount at the vibration sleeve is the largest, and the eccentricity at the agitating sleeve is zero, ensuring that the vibration is not transmitted to the agitating drive end directly connected to the agitating sleeve. On the parts, the reliability and service life of the mixer are improved. In addition, although the vibrating agitator is single-ended eccentric vibration, due to the specific arrangement direction of the agitating blades, the mixture can be circulated and flowed throughout the mixing drum. Therefore, the mixture can be subjected to good vibration.

[0020] The present invention will be further described in detail below with reference to the drawings and embodiments. DRAWINGS

1 is a schematic view of the working principle of the present invention. 2 is a schematic view of the overall structure of the present invention.

3 is a schematic structural view of the present invention after removing the outer side plate of a part of the stirring end mixing drum.

4 is a schematic structural view of the present invention with the outer side plate of the vibrating end mixing drum removed.

5 is a bottom view of the present invention.

6 is a partial cross-sectional view taken along line A-A of FIG. 5.

7 is a graph showing the probability distribution curve of the average compressive strength of the concrete test block obtained by the coupling synchronous double-shaft vibration mixer and the common coupling synchronous double-shaft mixer under different stirring conditions according to the present invention.

[0028] Description of the reference numerals:

[0029]

1 - geared motor; 2 - reducer; 3- - reducer connection

4 a stirring end drive belt; 5 - synchronous coupling; 6 • agitating drive shaft:

7—Stirring at the stirring end 8- Stirring set;

10-1—first return blade;

10-2—Second return blade

12-mixing simple;

13—Vibration end stirring simple 14 vibration set simple;

15—vibration end eccentric block; moving shaft; 17—vibration motor;

18—discharge door;

Dynamic end belt 20 - hollow agitating shaft;

20-1 - first hollow agitator shaft; 20-2 - second hollow agitator shaft:

21—Agitating end eccentric block; 22- Stirring drive end inner bearing sleeve;

23—vibration bearing; 24 eccentric bearing sleeve;

25—Stirring drive end support bearing; 26 Vibrating drive end support bearing;

27—Vibration drive end bearing sleeve; 28 agitating drive shaft bearing;

29-spline sleeve; 30- agitating drive shaft outer bearing seat;

Vibration drive end bearing housing. detailed description

[0030] As shown in FIGS. 1 to 6, the present invention includes a frame 9 and a vibration stirring device fixedly mounted on the frame 9, and the left end of the vibration stirring device is provided with a stirring for generating a stirring driving force and generated The driving force is transmitted to the stirring drive and the transmission device of the vibration stirring device, and the right end of the vibration stirring device is provided with a vibration driving and transmission device for generating a vibration driving force and transmitting the generated vibration driving force to the vibration stirring device The agitation driving and transmission device is mounted on the frame 9 through the agitating end mixer drum outer plate 7, and the vibration driving and transmission device is mounted on the frame 9 through the vibrating end mixing drum outer plate 13, and the stirring end is stirred. The outer tube plate 7 and the outer side plate 13 of the vibrating end mixing drum are fixedly connected to the frame 9; the vibrating stirring device comprises a mixing drum 12 fixedly mounted on the frame 9 and arranged to be stirred a stirring mechanism for continuously stirring the material in the cylinder 12, the stirring mechanism comprising a hollow agitating shaft 20 mounted on the cylinder of the mixing drum 12 through a bearing and fixedly mounted on the outer wall of the hollow stirring shaft 20 from left to right a plurality of agitating units, the two ends of the hollow agitating shaft 20 respectively pass through the left and right ends of the mixing drum 12, the hollow agitating shaft 20 is provided with a vibrating shaft 16 which is respectively disposed at two ends of the mixing drum 12 at both ends; The number of the stirring mechanisms is two and the two stirring mechanisms constitute a complete stirring system for circulating the materials in the mixing drum 12, and the two hollow stirring shafts 20 corresponding to the two stirring mechanisms are arranged in parallel on the mixing drum 12 Internal; the number of the agitation drive and the transmission device is two, two agitating drives and transmissions are respectively installed at the left end of the two hollow agitating shafts 20, and a synchronous coupling is installed between the two agitating drives and the transmission device 5; the number of the vibration drive and transmission device is two, two vibration drive and transmission devices are respectively installed at the right end of the two hollow agitator shafts 20, two vibration drive and transmission The moving device is fixedly connected to the two vibration shafts 16, respectively.

[0031] As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 5 and FIG. 6, the two agitation driving and transmission devices have the same structure and both include a stirring driving power source, a speed reducer 2, a stirring transmission shaft 6 and stirring. a sleeve 8 , an input shaft of the speed reducer 2 is drivingly connected to the stirring drive power source via a stirring end drive belt 4 , the output shaft of the speed reducer 2 is connected through the reducer connecting sleeve 3 and disposed inside the reducer connecting sleeve 3 The spline sleeve 29 is fixedly connected to one end of the agitating drive shaft 6, and the other end of the agitating drive shaft 6 is fixedly connected with the agitating sleeve 8; the left end of the hollow agitating shaft 20 and the vibrating shaft 16 are located at the agitating sleeve 8 The hollow agitating shaft 20 is fixedly connected to the agitating sleeve 8 , and the vibrating shaft 16 is sleeved with a stirring driving end inner bearing sleeve 22 , and the agitating driving end inner bearing sleeve 22 is mounted with a stirring driving end supporting bearing 25, the agitating drive end inner bearing sleeve 22 and the agitation driving end support bearing 25 are both disposed in the agitating sleeve 8, the agitating driving end supporting bearing 25 is fixedly connected with the agitating sleeve 8; the synchronous coupling 5 Installed in the office Stirring was stirred two ends of the drive and the gearing between the belt 4. During operation, the power is output from the agitation drive power source (stirring motor 1), and the output power is sequentially passed through the agitating end drive belt (first stage deceleration) 4. The speed reducer (secondary deceleration) 2 and the agitating drive shaft 6 are finally transmitted to and The agitating drive shaft 6 is connected to the agitating sleeve 8 by bolts. Since the agitating sleeve 8 is drivingly connected to the hollow agitating shaft 20, the agitating sleeve 8 drives the hollow agitating shaft 20 and the stirring arm 11 and the agitating blade 10 mounted thereon to rotate. Since the two agitating drives and the agitation driving power source of the transmission device are symmetrically arranged, the corresponding two hollow agitating shafts 20 are rotated at the same magnitude, and the two agitating shafts 20 are installed between the agitating end belts 4 The synchronous coupling 5 ensures that the two hollow agitating shafts 20 are synchronously reversely rotated.

[0032] As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 5 and FIG. 6 , the agitating drive shaft 6 is sleeved with a stirring drive shaft bearing 28 , and the agitating drive shaft bearing 28 is located at the agitating sleeve 8 . On the left side, the agitating drive shaft bearing 28 is externally mounted with a stirring drive shaft outer bearing block 30, and the agitating drive shaft outer bearing block 30 is fixed on the outer side plate 7 of the agitating end mixing drum.

[0033] As shown in FIG. 1, FIG. 2, FIG. 4, FIG. 5 and FIG. 6, the two vibration driving and transmission devices are identical in structure and each include a vibration driving power source and a vibration sleeve 14, the vibration driving power The source is connected to the vibration shaft 16 via a vibrating end belt 19 which is sleeved on the hollow agitating shaft 20 on the right side of the mixing drum 12 and fixedly connected to the hollow agitating shaft 20, the vibrating sleeve 14 An eccentric bearing sleeve 24 sleeved on the vibration shaft 16 and a vibration bearing 23 mounted on the eccentric bearing sleeve 24 are provided, and the vibration bearing 23 is fixedly coupled to the vibration sleeve 14. Wherein, since the axis of the eccentric bearing sleeve 24 is different from the axis of the vibration shaft 16, the vibration sleeve 14 connected to the eccentric bearing sleeve 24 via the vibration bearing 23 and the mixing cylinder 12 connected to the vibration sleeve 14 are opposite to each other. The vibrating shaft 16 is eccentrically mounted, and the eccentric amount is gradually increased from the agitating sleeve 8 to the vibrating sleeve 14 in the direction of the hollow agitating shaft 20, the eccentric amount at the vibrating sleeve 14 is maximum, and the eccentric amount at the agitating sleeve 8 Zero. During operation, the vibration drive power source (vibration drive motor 17) outputs power, and the vibration end belt 19 drives the vibration shaft 16 to rotate, and the high-speed rotation vibration shaft 16 is forced to bias. The stirring shaft 20 and the stirring arm 11 and the stirring blade 10 on which the core is attached generate vibration.

[0034] As shown in FIG. 1, FIG. 2, FIG. 4, FIG. 5 and FIG. 6, the vibration shaft 16 is sleeved with a vibration drive end inner bearing sleeve 27, and the vibration drive end inner bearing sleeve 27 is located in the vibration sleeve. On the right side of the cylinder 14, the vibration drive end inner bearing sleeve 27 is mounted with a vibration drive end support bearing 26, and the vibration drive end support bearing 26 is externally mounted with a vibration drive end outer bearing seat 31, the vibration drive end The bearing housing 31 is fixed to the outer side plate 13 of the vibrating end mixer drum.

[0035] As shown in FIG. 1 , FIG. 2 , FIG. 4 , FIG. 5 and FIG. 6 , a stirring end eccentric block 21 is fixedly mounted on the vibration shaft 16 and located inside the stirring sleeve 8 , and the vibration shaft 16 is mounted on the vibration shaft 16 . The vibration end eccentric block 15 is fixedly mounted in the vibration sleeve 14 or on the right side of the vibration sleeve 14; the agitating end eccentric block 21 and the vibrating end eccentric block 15 are used to balance the hollow agitating shaft 20, the stirring arm 11 and the agitating blade 10, etc. The inertial force and the inertial force moment generated by the eccentric mass ensure that the vibration shaft 16 achieves dynamic balance.

As shown in FIGS. 2, 3 and 4, the agitation unit includes a stirring arm 11 fixedly coupled to the outer wall of the hollow agitating shaft 20 and a stirring blade 10 mounted at the end of the agitating arm 11, the agitating blade 10 The angle between the stirring surface and the stirring arm 11 to which it is mounted, that is, the axial mounting angle of the stirring blade is 30 ° to 45 °.

[0037] As shown in FIG. 2, FIG. 3 and FIG. 4, the two hollow agitating shafts 20 are respectively a first hollow agitating shaft 20_1 and a second hollow agitating shaft 20-2, and are first mounted in the mixing drum 12. The agitating blade of the rightmost agitating unit of the hollow agitating shaft 20-1 is a first returning blade 10-1 that pushes the agitated material to the center of the mixing drum 12, and the axial mounting angle of the first returning blade 10-1 is mounted on the first The axial mounting angle of the stirring blade of the leftmost stirring unit of the second hollow stirring shaft 20-2 corresponds to; the stirring blade of the stirring unit of the rightmost end of the second hollow stirring shaft 20-2 installed in the mixing drum 12 is the material to be stirred. Pushing to the second returning blade 10-2 in the center of the mixing drum 12, the axial mounting angle of the second returning blade 10-2 and the axial mounting angle of the agitating blade mounted to the leftmost agitating unit of the first hollow agitating shaft 20-1 Corresponding.

As shown in FIGS. 1 to 6, the agitation driving power source is a stirring motor 1, and the vibration driving power source is a vibrating motor 17.

[0039] In this embodiment, between the agitating transmission shaft 6 and the agitating sleeve 8, between the agitating transmission shaft outer bearing housing 30 and the agitating end mixing cylinder outer plate 7, and the vibration driving end outer bearing housing 31 and the vibration end The outside plates 13 of the mixing drum are fixed by bolts.

[0040] In this embodiment, since the left and right ends of the hollow agitating shaft 20 are respectively connected to the agitating sleeve 8 and the vibrating sleeve 14, and the agitating sleeve 8 is connected to the external agitating drive and other components of the transmission device, the agitating motor The output torque is transmitted to the hollow agitating shaft 20, and the hollow agitating shaft 20 is driven to rotate. Since the bearing sleeve near the right end (vibration end) of the hollow agitating shaft 20 is the eccentric bearing sleeve 24, the bearing sleeve near the left end (stirring end) of the hollow agitating shaft 20 is a non-eccentric agitating drive end inner bearing sleeve 22, so the present invention The vibration exciter (the vibration exciter is formed by the hollow agitating shaft 20, the agitating arm 11, the agitating blade 10, the vibrating shaft 16, the eccentric bearing sleeve 24, the vibrating bearing 23, the vibrating sleeve 14, and the vibration driving motor 17, etc.) is a single end The eccentric structure; during operation, the vibration motor 17 drives the vibration shaft 16 to rotate at a high speed. In the eccentric action of the eccentric bearing sleeve 24, the high-speed rotating vibration shaft 16 generates a large centrifugal force, so that the stirring shaft 20 vibrates while stirring. That is, the cement particles in the mixing drum 12 are in a vibrating state, destroying the agglomerated mass of the cement, greatly reducing the viscosity and internal friction between the material particles, improving the stirring efficiency and reducing the production cost. In the vibration stirring process, the entire vibration stirring device and the vibration sleeve 14 are all of the quality of the vibration, and the mass thereof is very large, so even in the case where the amount of eccentricity is small, due to the large mass of the vibration and the high excitation frequency, It can provide a large exciting force to the whole vibration stirring device, that is, the vibration energy is large, and the mixing quality and the stirring efficiency of the concrete can be obviously improved. In addition, since the vibration shaft 16 of the vibration exciter is dynamically balanced according to the mechanical principle, the agitating end eccentric block 21 and the vibrating end eccentric block 15 are respectively installed at both ends of the vibrating shaft 16, because During the vibration stirring process, the vibration shaft 16 itself does not vibrate, that is, the vibration is not transmitted to the frame 9 and other components, which can better eliminate the adverse effects of vibration on other parts of the machine, thereby improving the mixer machine. Reliability and longevity.

[0041] In the embodiment, the inner wall of the mixing drum 12 is provided with a wear-resistant lining plate for protecting the same, and the shaft end sealing device is installed at both ends of the mixing drum 12 to ensure the sealing property.

[0042] The working principle of the present invention is: after the mixture is put into the mixing drum 12, the stirring motor 1 and the vibration motor 17 are simultaneously activated or the vibration motor 17 is started within a few seconds after the stirring motor 1 is started, then the two stirrings are performed. The motor 1 synchronously drives the two hollow agitating shafts 20 and the agitating blades 10 mounted thereon through the synchronous coupling 5 for synchronous reverse rotation, continuously pushing the material in the mixing drum 12 for axial and axial circulation motion (such as At the same time, the vibration motor 17 drives the two vibration shafts 16 to rotate at a high speed via the vibration end transmission belt 19, forcing the vibration agitating device of the vibrating agitating device 14 and the hollow agitating shaft 20 which are eccentrically mounted thereon, and mounting in the hollow stirring. The stirring arm 11 and the stirring blade 10 on the shaft 20 generate vibration. Under the combined action of forced agitation and vibration of the vibrating agitating device, sufficient uniform agitation of the material in the space of the entire mixing drum 12 is achieved. After a period of vibration stirring (depending on the actual situation), the concrete mixture has been stirred evenly. At this time, the stirring motor 1 and the vibration motor 17 are turned off at the same time or closed within a few seconds before the stirring motor 1 is turned off. The motor 17 is vibrated, and then the discharge door 18 is opened to discharge the already stirred mixture.

[0043] The following is a comparison test of the double-shaft vibration stirring and the ordinary double-shaft agitating under the same three concrete mixing conditions:

[0044] (1) according to the design mix ratio vibration stirring, mixing time is dry mix 8s, wet mix 30s;

[0045] (2) Turn off the vibration motor stirring (equivalent to the ordinary twin-shaft mixing), the mixing time is dry mixing for 8s, wet mixing for 60s;

[0046] (3) Turn off the vibration motor stirring (equivalent to the ordinary double-shaft stirring), the mixing time is dry mixing for 8s, wet mixing for 30s.

[0047] The comparison test data of the twin-shaft vibration stirring and the ordinary twin-shaft agitating under the above three different stirring conditions are shown in Table 1 below, and FIG. 7 is based on the average compressive strength of the 7d hardened concrete test piece; The probability distribution curve of the average compressive strength of the obtained concrete test piece under three different stirring conditions.

[0048]

Table 1 Comparison test data of twin-shaft vibration mixer and ordinary twin-shaft mixer

Note: Δ Μ in the above table is the relative error of the mortar density in the concrete of different parts of the same tank. AG is the relative error of the mass of coarse aggregate per unit volume of concrete in the different parts of the concrete mixture, Δ Μ and AG as an evaluation index for the homogeneity of concrete mix, according to the requirements of homogeneous concrete in Concrete Mixer: Δ Μ < 0. 8 %, AG < 5 %, ie the homogeneity of the concrete mixture with the obtained concrete The relative error Δ Μ of the mortar density and the relative error AG of the mass of the aggregate mass per unit volume of concrete, the lower the Δ Μ and AG, the better; the average compressive strength of the 7d hardened concrete test piece. The average compressive strength standard deviation of the concrete test block, C _v is the average compressive strength dispersion coefficient of the concrete test block, 7, σ and (as the evaluation index of the average compressive strength of the 7d hardened concrete test block; The better the quality of the concrete, 0 and (the larger, the worse the quality of the concrete.

[0052] As can be seen from Table 1, (1) Concrete mixture homogeneity: Δ Μ and Δ 6 in the stirring condition (1) are smaller than Δ Μ and AG in the stirring conditions (2) and (3), The concrete mixture obtained by vibration stirring has good homogeneity; (2) The average compressive strength of the 7d hardened concrete test block: when the mixing ratio is the same, the dry mixing time is the same, and the wet mixing time is reduced by half, that is, (1) And (2) the average compressive strength of the concrete after stirring by the twin-shaft vibrating mixer under the agitation condition: the average compressive strength of the concrete after mixing with the ordinary twin-shaft mixer is increased by about 16%, g卩 (23. 047-19. 875) /19. 875 = 16. 7 % ; When the mixing ratio is constant, the dry mixing time and the wet mixing time are the same, that is, under the stirring conditions of (1) and (3), the average concrete resistance of the twin-shaft vibration mixer after mixing Compressive strength: average compressive strength of concrete after mixing with ordinary twin-shaft mixer; increase by about 28%, S卩 (23. 047-17. 887) / 17.887 = 28. 8 %; also by the data in Table 1 found that (1) obtained with stirring concrete σ, C _v than (2) and (3) stirring the resulting concrete [sigma] C _v is small, vibratory described high compressive strength of concrete is stirred.

[0053] FIG. 7 is a graph showing the probability distribution curve of the average compressive strength of the concrete test piece obtained by the synchronous twin-shaft vibration mixer of the present invention and the common twin-shaft mixer under different stirring conditions, as can be seen from the figure, The average compressive strength of the 7d hardened concrete test block of the concrete obtained under the stirring condition (1): The average compressive strength of the 7d hardened concrete test block obtained under the stirring conditions (2) and (3): high.

[0054] In summary, the quality of the concrete obtained by the twin-shaft vibrating mixer is significantly improved compared with the ordinary twin-shaft mixer, and the concrete has high compressive strength and uniformity, which is sufficient. It shows that the vibration agitation effectively strengthens the circulating flow and diffusion distribution of the components in the inefficient zone while completing the macro-stirring, which greatly improves the micro-uniformity of the concrete and better eliminates the phenomenon of inefficient zones. The microscopic defects at the time; and the vibration agitation also shortens the stirring time, increases the production efficiency, and lowers the production cost.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Any simple modifications, alterations, and equivalent structural changes made to the above embodiments in accordance with the technical spirit of the present invention are still Within the scope of protection of the technical solutions of the present invention.

Claims

A coupling synchronous double-shaft vibration mixer, comprising: a frame (9) and a vibration stirring device fixedly mounted on the frame (9), the left end of the vibration stirring device is provided for Generating a stirring driving force and transmitting the generated stirring driving force to the stirring driving and transmission device of the vibration stirring device, the right end of the vibration stirring device is provided with a vibration driving force for generating and transmitting the generated vibration driving force to the a vibration driving and transmission device of the vibration stirring device, wherein the agitation driving and transmission device is mounted on the frame (9) through the agitating end mixer drum outer plate (7), and the vibration driving and transmission device passes through the vibration end mixing drum outer plate (13) mounted on the frame (9), the agitating end mixing drum outer plate (7) and the vibrating end mixing drum outer plate (13) are fixedly connected with the frame (9); the vibration stirring device comprises a fixing a mixing drum (12) mounted on the frame (9) and a stirring mechanism provided in the mixing drum (12) for continuously pushing and stirring the material, the stirring mechanism comprising a mixing drum installed through the bearing ( 12) The hollow agitating shaft (20) on the cylinder and a plurality of agitating units fixedly mounted on the outer wall of the hollow agitating shaft (20) from left to right, the two ends of the hollow agitating shaft (20) are respectively pierced a left and right ends of the mixing drum (12), wherein the hollow agitating shaft (20) is provided with a vibrating shaft (16) which is respectively pierced from the left and right ends of the mixing drum (12); the number of the stirring mechanisms is two The two stirring mechanisms form a complete agitation system for circulating the material in the mixing drum (12), and the two hollow stirring shafts (20) corresponding to the two stirring mechanisms are arranged in parallel inside the mixing drum (12); The number of agitation drives and transmissions is two, two agitator drives and transmissions are respectively installed at the left end of the two hollow agitator shafts (20), and a synchronous coupling is installed between the two agitating drives and the transmission device (5) The number of the vibration drive and transmission device is two, two vibration drive and transmission devices are respectively installed at the right end of the two hollow agitator shafts (20), and two vibration drive and transmission devices respectively and two vibration axes (16) Fixed Access.

2 . The coupling synchronous double-shaft vibration mixer according to claim 1 , wherein the two agitation driving and the transmission device have the same structure and both comprise a stirring driving power source and a speed reducer (2). a stirring drive shaft (6) and a stirring sleeve (8), wherein the input shaft of the speed reducer (2) is drivingly connected to the stirring driving power source through a stirring end transmission belt (4), the speed reducer (2) The output shaft is fixedly connected to one end of the agitating drive shaft (6) through a reducer connecting sleeve (3) and a spline sleeve (29) disposed inside the reducer connecting sleeve (3), and the stirring drive shaft (6) is further One end is fixedly connected with the stirring sleeve (8); the left end of the hollow stirring shaft (20) and the vibration shaft (16) are located in the stirring sleeve (8), and the hollow stirring shaft (20) and the stirring sleeve ( 8) a fixed connection, the vibration shaft (16) is sleeved with a stirring drive end inner bearing sleeve (22), and the agitating drive end inner bearing sleeve (22) is mounted with a stirring drive end support bearing (25), The agitating drive end inner bearing sleeve (22) and the agitating drive end support bearing (25) are both provided in the stirring sleeve In the cylinder (8), the agitating drive end support bearing (25) is fixedly connected with the agitating sleeve (8); the synchronous coupling (5) is mounted on the agitating end transmission belt of the two agitating drive and transmission (4) Between.

3. The coupling synchronous double-shaft vibration mixer according to claim 2, wherein the agitating transmission shaft (6) is sleeved with a stirring transmission shaft bearing (28), and the agitation transmission The shaft bearing (28) is located on the left side of the agitating sleeve (8), and the agitating drive shaft bearing (28) is externally mounted with a stirring drive shaft outer bearing seat (30), and the agitating drive shaft outer bearing seat (30) is fixed Mix the outer plate (7) of the drum at the stirring end.

4. A coupling synchronous twin-shaft vibration mixer according to claim 1, 2 or 3, wherein: said two vibration drive and transmission devices are identical in structure and each comprise a vibration driven power source and vibration a sleeve (14), the vibration driving power source is drivingly connected to the vibration shaft (16) through a vibration end transmission belt (19), and the vibration sleeve (14) is sleeved on the hollow stirring on the right side of the mixing drum (12) The shaft (20) is fixedly connected to the hollow agitating shaft (20), and the vibrating sleeve (14) is provided with an eccentric bearing sleeve (24) sleeved on the vibration shaft (16) and mounted on the eccentric bearing sleeve ( 24) A vibrating bearing (23), the vibrating bearing (23) being fixedly connected to the vibrating sleeve (14).

5. The coupling synchronous double-shaft vibration mixer according to claim 4, wherein the vibration shaft (16) is sleeved with a vibration drive end inner bearing sleeve (27), the vibration The driving end inner bearing sleeve (27) is located to the right of the vibration sleeve (14), and the vibration driving end inner bearing sleeve (27) is mounted with a vibration driving end supporting bearing (26), and the vibration driving end supports the bearing ( 26) A vibration drive end outer bearing seat (31) is externally mounted, and the vibration drive end outer bearing seat (31) is fixed on the vibration end mixer outer plate (13).

6 . The coupling synchronous double-shaft vibration mixer according to claim 5 , wherein the vibration shaft ( 16 ) is fixedly mounted with a stirring end eccentric block inside the stirring sleeve ( 8 ). (21) A vibration end eccentric block (15) is fixedly mounted on the vibration shaft (16) and located in the vibration sleeve (14) or on the right side of the vibration sleeve (14).

7. A coupling synchronous twin-shaft vibration stirrer according to claim 1 or 2, wherein the agitating unit comprises a stirring arm (11) fixedly attached to the outer wall of the hollow agitating shaft (20). And an agitating blade (10) installed at the end of the stirring arm (11), the angle between the agitating surface of the agitating blade (10) and the stirring arm (11) to which it is mounted, that is, the axial mounting angle of the agitating blade is 30 °~ 45 °.

8. The coupling synchronous double-shaft vibration mixer according to claim 1 or 2, wherein the two hollow agitating shafts (20) are respectively a first hollow agitating shaft (20-1) And the second hollow stirring shaft (20-2), the stirring blade of the stirring unit at the right end of the first hollow stirring shaft (20-1) installed in the mixing drum (12) is for pushing the stirred material to the mixing drum (12) The central first returning vane (10-1), the axial mounting angle of the first returning vane (10-1) and the axial direction of the agitating vane attached to the leftmost agitating unit of the second hollow agitating shaft (20-2) The mounting angle corresponds; the agitating blade of the rightmost agitating unit of the second hollow agitating shaft (20-2) installed in the mixing drum (12) is a second returning blade that pushes the stirred material to the center of the mixing drum (12) (10-2), the axial mounting angle of the second returning blade (10-2) corresponds to the axial mounting angle of the agitating blade mounted to the leftmost agitating unit of the first hollow agitating shaft (20-1).

9. The coupling synchronous double-shaft vibration mixer according to claim 4, wherein the agitation driving power source is a stirring motor (1), and the vibration driving power source is a vibration motor (17). ).

10. The coupling synchronous double-shaft vibration mixer according to claim 5, characterized in that: the agitating drive shaft (6) and the agitating sleeve (8), the agitating drive shaft outer bearing seat (30) It is fixed by bolts between the outer side plate (7) of the stirring end mixer drum and the outer side bearing plate (31) of the vibration driving end and the outer side plate (13) of the vibration end mixing drum.