WO2013067868A1

WO2013067868A1 - Gear-synchronised vibrating stirrer with two horizontal axes

Info

Publication number: WO2013067868A1
Application number: PCT/CN2012/082069
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: 2012-09-26
Publication date: 2013-05-16
Also published as: CN102335960A

Abstract

A gear-synchronised vibrating stirrer with two horizontal axes, comprising a framework (6), a stirring transmission device, a vibration transmission device, a vibrating stirring device, a stirring driving mechanism (4) and a vibration driving mechanism (7), the stirring driving mechanism (4) and the vibration driving mechanism (7) being provided on the left and right ends of the vibrating stirring device respectively. The vibrating stirring device comprises a stirring barrel (5), and a stirring mechanism comprising a hollow stirring shaft (1) and a plurality of stirring units, a vibrating shaft (16) being provided in the hollow stirring shaft (1). The number of stirring transmission devices is two, and they are installed on the left end of the two hollow stirring shafts (1) respectively. A synchronising gear (12) is installed between the two stirring transmission devices. The number of vibrating transmission devices is two, and they are installed on the right end of the two hollow stirring shafts (1) respectively. The number of stirring driving mechanisms (4) and of vibration driving mechanisms (7) is one or two. The stirrer has a rational structural design, is convenient to use, and can homogenise the concrete in a short time macroscopically and microscopically, thereby improving the quality and efficiency of stirring.

Description

Description: A gear synchronous double-shaft vibration mixer

[0001] The present invention relates to a mixer, and more particularly to a gear synchronous double-shaft vibration mixer. Background technique

[0002] The mixer is the main equipment for concrete mixing. Its function is to mix the prepared materials into a mixture that meets the quality requirements. According to the working principle, it can be divided into two types: self-dropping mixer and forced mixer. The self-propelled 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, thereby making the parts The mutual position of the materials is continuously redistributed to obtain a uniform enthalpy. The power consumption of the mixer and the wear of the wearing parts are small, but the mixing strength is not strong enough, and generally only suitable for mixing plastic concrete and semi-plastic concrete. The forced mixer is a forced mixing action such as shearing, squeezing, tumbling and throwing the material by means of a rotating stirring device, so that the material is uniformly stirred in the violent relative movement. The effect of the mixer on the material is strong, and the mixing quality is high. Good, high productivity, but large wear and power consumption, and strict restrictions on aggregate particle size, suitable for mixing dry hard concrete and lightweight aggregate concrete. In summary, the two mixers have their own technical and economic advantages, both of which are in China, 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] The twin-shaft mixer is a forced agitator widely used in concrete mixing equipment in China. It also has the problem that the mixture is difficult to achieve microscopic homogenization, and when the stirring device works, it is close to the circular mixing tube. The center portion has a low speed and a high velocity at the wall, which makes the uniformity of the different ring bands in the mixing drum different. The central part of the mixing drum becomes the low-efficiency area of the mixing. On the one hand, the working time of the whole machine is delayed, and there is a hidden danger to the mixing quality. On the other hand, the mixed material in the inefficient area has poor fluidity, is easy to adhere to the stirring shaft, and even creates a hug. Axis phenomenon. In summary, the agitation inefficient zone is an inherent defect determined by the structure of the forced mixer, which seriously affects the operation quality and working efficiency of the mixer. 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 gear synchronous double-shaft vibration mixer with simple structure, reasonable design and good use effect, and can make concrete mixture in a short time. The homogenization is achieved both macroscopically and microscopically, thereby improving the agitation low efficiency zone near the stirring shaft and 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 gear same-type twin-shaft vibration mixer, which comprises: a frame, a stirring transmission device, a vibration transmission device, a vibration stirring device, and a stirring. a driving mechanism and a vibration driving mechanism, the stirring driving mechanism is disposed at a left side of the vibration stirring device, the vibration driving mechanism is disposed at a right side of the vibration stirring device, and the stirring driving mechanism passes the stirring transmission device Connected to the vibration stirring device and driven to stir the vibration stirring device, and the vibration driving mechanism is connected to the vibration stirring device through the vibration transmission device Description

And driving the vibration stirring device to generate vibration, the stirring driving mechanism and the vibration driving mechanism are fixedly mounted on the frame; the vibration stirring device comprises a mixing drum fixedly mounted on the frame and disposed inside the mixing drum and performing materials a stirring mechanism continuously pushing the stirring mechanism, the stirring mechanism comprising a hollow stirring shaft mounted on the barrel of the mixing drum through a bearing and a plurality of stirring units fixedly mounted on the outer wall of the hollow stirring shaft from left to right, the hollow stirring The two ends of the shaft respectively pass through the left and right ends of the mixing drum, and the hollow agitating shaft is provided with a vibrating shaft that passes through the left and right ends of the mixing drum respectively; the number of the stirring mechanism is two and two stirring mechanisms are formed. a complete agitation system for circulating the material in the mixing drum, two hollow mixing shafts corresponding to the two mixing mechanisms are arranged in parallel inside the mixing drum; the number of the stirring transmissions is two and two stirring The transmissions are respectively mounted on the left ends of the two hollow agitating shafts, and two synchronizing gears are installed between the two agitating transmissions and pass Synchronous power transmission gear; the number of vibration of the actuator is two, two oscillation drive are mounted at the right end of the two hollow agitator shaft, two oscillation drive respectively fixedly connected to two oscillating shaft.

[0007] The above-described gear synchronous type twin-shaft vibration mixer is characterized in that the number of the agitation driving mechanisms is one, and the agitation driving mechanism is connected to one of the agitation transmission devices.

[0008] The gear synchronous double-shaft vibration mixer described above is characterized in that: the number of the agitation drive mechanisms is two, and two agitation drive mechanisms are respectively connected with two agitation transmission devices and respectively drive two The vibrating stirring device rotates.

[0009] The above-described gear synchronous double-shaft vibration mixer is characterized in that the number of the vibration drive mechanisms is one, and the vibration drive mechanism is connected to the two vibration shafts through a transmission belt and a timing belt.

[0010] The above-described gear synchronous type twin-shaft vibration mixer is characterized in that the number of the vibration drive mechanisms is two, and the two vibration drive mechanisms are respectively connected to the two vibration shafts through the transmission belt.

[001 1] The above-described gear synchronous double-shaft vibration mixer is characterized in that: the agitation transmission device comprises a stirring transmission shaft and a stirring sleeve, and the agitating sleeve is fixed on the right end of the agitating transmission shaft, 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, and the vibrating shaft is sleeved with a stirring end bearing sleeve, and the stirring end bearing sleeve is mounted thereon Agitating the driving end support bearing, wherein the agitating end bearing sleeve and the agitating driving end supporting bearing are both disposed in the agitating sleeve, and the agitating driving end supporting bearing is fixedly connected with the dip sleeve; the two synchronous gears are installed at the Between the agitating drive shafts of the two agitation transmissions, the agitation drive mechanism is coupled to the agitating drive shaft through a coupling; the agitating drive shaft is sleeved with a stirring drive shaft bearing, and the agitating drive shaft bearing is located at the same time. Between the gear and the agitating sleeve, a stirring drive shaft bearing seat is mounted outside the agitating drive shaft bearing, and the agitating drive shaft bearing seat is fixed on the frame.

[0012] The above-described gear synchronous type twin-shaft vibration mixer is characterized in that the vibration transmission device comprises a vibration sleeve disposed on the right side of the mixing drum, and the vibration sleeve is fixedly mounted on the right end of the hollow stirring shaft. The vibration sleeve is provided with an eccentric bearing sleeve sleeved on the vibration shaft and a vibration bearing mounted on the eccentric bearing sleeve, the vibration bearing is fixedly connected with the vibration sleeve; the vibration shaft is sleeved with vibration An end bearing sleeve, the vibrating end bearing sleeve is located at a right side of the vibrating sleeve, and the vibrating end bearing sleeve is mounted with a vibration driving end supporting bearing, and the vibrating driving end supporting bearing is provided with a vibration driving end supporting bearing seat, The vibration drive end support bearing seat is fixed on the bracket.

[0013] The above-described gear-synchronous twin-shaft vibration mixer is characterized in that: a stirring end eccentric block is fixedly connected to the vibration shaft and located inside the stirring sleeve, and the vibration shaft is located in the vibration sleeve. Or the vibration end eccentric block is fixedly connected to the right side of the vibration sleeve.

[0014] The above-described gear synchronous double-shaft vibration mixer is characterized in that the agitation unit comprises a fixed Description

a stirring arm connected to the outer wall of the hollow stirring shaft and a stirring blade installed at 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 ° .

[0015] The above-mentioned gear type coaxial 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 first installed in the mixing drum The stirring blade of the rightmost stirring unit of the hollow stirring shaft is a first returning blade that pushes the stirred material to the center of the mixing drum, the axial mounting angle of the first returning blade and the stirring of the stirring unit installed at the leftmost end of the second hollow stirring shaft The axial mounting angle of the blade corresponds to; the agitating blade of the agitating unit at the right end of the second hollow agitating 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 axis of the second returning blade The mounting angle corresponds to the axial mounting angle of the agitating blades mounted to the leftmost agitating unit of the first hollow agitating shaft.

[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 effect is good. The vibrating mixer increases the vibration on the basis of the forced stirring of the stirring device. When working, the vibrating stirring device not only has a forced stirring effect on the mixture, but also has vibration. The effect is that the cement particles are in a flutter state, destroying the cement agglomerates, increasing the area of cement hydration, thereby increasing the strength of the concrete hydrated product and improving the strength of the concrete after hardening. At the same time, under the action of vibration, 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 components in the mixing low efficiency zone (near the hollow stirring shaft) are microscopically composed. The circulation flow and diffusion distribution on the top are also strengthened, which creates extremely favorable conditions for eliminating the low efficiency zone and achieving rapid and uniform agitation. Therefore, the twin-shaft vibration stirrer 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 present invention adopts a stirring shaft, a stirring arm and a stirring blade as a vibration source, and the stirring blade vibrates while stirring, the effective vibration area is large, the vibration propagation distance is close and evenly distributed, and the vibration is small. The strength allows the mixture in the mixing drum to be subjected to sufficient vibration, so that the performance requirements of the bearing are low and the bearing life is easily ensured.

[0019] (3) Since the vibration shaft of the present invention is dynamically balanced according to the mechanical principle, only the agitating shaft and the agitating arm and the agitating blade which are eccentrically mounted on the vibrating shaft generate vibration, and the vibration is directly transmitted to the mixing. The vibration axis that satisfies the dynamic balance condition does not vibrate itself, and the adverse effect of vibration on other parts of the machine is well eliminated. At the same time, the 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 zero of the agitating drive end directly connected to the agitating sleeve. On the components, the reliability and service life of the mixer are improved. Although the vibrating agitating device is single-ended eccentric vibration, the mixing material can be subjected to good vibration due to the specific arrangement direction of the agitating blades, which can push the mixture to circulate throughout the mixing drum.

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

1 is a schematic view showing the working principle of the first embodiment of the present invention.

2 is a schematic view showing the working principle of a second embodiment of the present invention.

3 is a schematic view showing the working principle of a third embodiment of the present invention.

4 is a schematic view showing the working principle of a fourth embodiment of the present invention.

5 is a plan view of a first embodiment of the present invention.

6 is a top plan view of a second embodiment of the present invention. Instruction manual

7 is a plan view of a third embodiment of the present invention.

8 is a plan view of a fourth embodiment of the present invention.

9 is a front elevational view of a first embodiment of the present invention.

10 is a schematic view showing the connection relationship between the vibration shaft and other components of the present invention.

[0031] FIG. 11 is a graph showing the probability distribution curve of the average compressive strength of the concrete test block obtained by the gear synchronous double-shaft vibration stirrer and the ordinary gear synchronous double-shaft vibration stirrer under different stirring conditions.

DESCRIPTION OF REFERENCE NUMERALS

[0033]

1 hollow mixing shaft; 1-1 first hollow mixing shaft; 1-2 - second hollow mixing shaft:

2—stirring arm; 3—stirring blade; 3-1—first returning blade;

3- 2 second return blade 4 a stirring drive mechanism; 5 - agitation simple; 6 - frame; 7 - vibration drive mechanism;

8—vibration end bearing sleeve; 10—coupling; 11 agitating drive shaft;

12—synchronous gear; 13—stirring sleeve; 14 a stirring drive shaft bearing;

15 stirring drive shaft bearing housing; 16 - vibration shaft;

17—vibration sleeve simple; 18—stirring drive end support bearing;

19-vibration drive end support bearing; 20-vibration bearing;

21 eccentric bearing sleeve; 22—stirring end eccentric block; 23—vibration end eccentric block;

24—drive belt; 25—vibration drive end support bearing seat;

26—synchronous belt; 27—stirring end bearing sleeve. detailed description

Embodiment 1

[0035] As shown in FIG. 1, FIG. 5, FIG. 9 and FIG. 10, a gear synchronous double-shaft vibration mixer includes a frame 6, a stirring transmission device, a vibration transmission device, a vibration stirring device, and a stirring driving mechanism. And a vibration driving mechanism 7, the stirring driving mechanism 4 is disposed on the left side of the vibration stirring device, the vibration driving mechanism 7 is disposed on the right side of the vibration stirring device, and the stirring driving mechanism 4 passes the stirring The transmission device is connected to the vibration agitation device and drives the vibration agitation device for agitation. The vibration drive mechanism 7 is connected to the vibration agitation device by the vibration transmission device and drives the vibration agitation device to generate vibration. The agitation drive mechanism 4 and the vibration drive mechanism 7 are both Fixedly mounted on the frame 6; the vibrating stirring device comprises a mixing drum 5 fixedly mounted on the frame 6 and a stirring mechanism disposed inside the mixing drum 5 and continuously pushing the material for stirring, the stirring mechanism including the bearing through the bearing a hollow agitating shaft 1 mounted on the barrel of the mixing drum 5 and a plurality of agitating units fixedly mounted on the outer wall of the hollow agitating shaft 1 in order from left to right, The two ends of the hollow agitator shaft 1 respectively pass through the left and right ends of the mixing drum 5, and the hollow agitating shaft 1 is provided with a vibrating shaft 16 respectively piercing the left and right ends of the mixing drum 5; the number of the stirring mechanism is Two and two stirring mechanisms are combined to form one in the mixing drum 5 Description

a complete agitation system for cyclically stirring the materials, two hollow agitating shafts 1 corresponding to the two stirring mechanisms are arranged in parallel inside the mixing drum 5; the number of the agitating transmission devices is two and two agitating transmission devices are respectively installed in two The left end of the hollow agitator shaft 1 is mounted with two homogenous gears 12 between the two agitating transmissions and transmits power through two co-rotating gears 12; the number of the vibration transmission devices is two, two vibration transmission devices They are respectively mounted on the right ends of the two hollow agitating shafts 1, and the two vibration transmissions are fixedly connected to the two vibration shafts 16, respectively. In this embodiment, the number of the agitation driving mechanisms 4 is one, the agitation driving mechanism 4 is connected to one of the agitation transmission devices, the number of the vibration driving mechanisms 7 is one, and the vibration driving mechanism Ί passes through the transmission belt 24 and the timing belt 26 A synchronous connection is made with the two vibration shafts 16. In operation, one agitating mechanism is driven to rotate by the agitating drive mechanism 4, and the other agitating transmission is driven by the synchronizing gear 12 to transfer power from one agitating mechanism to the other agitating mechanism.

[0036] As shown in FIG. 1, FIG. 5, FIG. 9 and FIG. 10, the agitation transmission device includes a stirring transmission shaft 11 and an agitating sleeve 13, and the agitating sleeve 13 is fixed on the right end of the agitating transmission shaft 11. The left end of the hollow agitator shaft 1 and the vibrating shaft 16 are located in the agitating sleeve 13 . The hollow agitating shaft 1 is fixedly connected to the agitating sleeve 13 , and the agitating end bearing sleeve 27 is sleeved on the vibrating shaft 16 . The stirring end bearing sleeve 27 is mounted with a stirring driving end support bearing 18, and the stirring end bearing sleeve 27 and the stirring driving end supporting bearing 18 are both disposed in the stirring sleeve 13, and the stirring driving end supports the bearing 18 and the stirring sleeve The cylinder 13 is fixedly connected; the two synchronizing gears 12 are mounted between the agitating transmission shafts 11 of the two agitating transmissions, and the agitation driving mechanism 4 is connected to the agitating transmission shaft 11 through the coupling 10; The drive shaft 11 is sleeved with a stirrer drive shaft bearing 14 , and the agitator drive shaft bearing 14 is located between the synchronous gear 12 and the agitating sleeve 13 , and the agitating drive shaft bearing 14 is mounted with a stirring drive shaft bearing seat 15 . Stirring The drive shaft housing 15 is fixed to the frame 6. In operation, the agitating drive mechanism 4 outputs power, which is transmitted from the coupling 10 to the agitating drive shaft 11, and the agitating drive shaft 11 transmits power to the agitating sleeve 13 fixedly connected thereto, due to the agitating sleeve 13 and the agitating shaft 1 The fixed connection is to drive the stirring shaft 1 and the stirring arm 2 and the stirring blade 3 mounted thereon to rotate; since the two agitating transmission shafts 11 are mounted with two synchronizing gears 12 of the same parameter, and the two synchronizing gears 12 mesh with each other, thereby ensuring two The agitating shaft 11 performs a synchronous reverse rotational motion.

[0037] As shown in FIG. 1, FIG. 5, FIG. 9 and FIG. 10, the vibration transmission device includes a vibration sleeve 17 disposed on the right side of the mixer drum 5, and the vibration sleeve 17 is fixedly mounted on the hollow agitator shaft 1 The vibrating sleeve 17 is provided with an eccentric bearing sleeve 21 sleeved on the vibration shaft 16 and a vibration bearing 20 mounted on the eccentric bearing sleeve 21, and the vibration bearing 20 is fixedly connected with the vibration sleeve 17; The vibrating shaft 16 is sleeved with a vibrating end bearing sleeve 8 on the right side of the vibrating sleeve 17, and the vibrating end bearing sleeve 8 is mounted with a vibrating driving end supporting bearing 19, A vibration drive end support bearing seat 25 is mounted outside the vibration drive end support bearing 19, and the vibration drive end support bearing seat 25 is fixed to the bracket 6. Since the axis of the eccentric bearing sleeve 21 is different from the axis of the vibration shaft 16, the vibration sleeve 17 connected to the eccentric bearing sleeve 21 by the vibration bearing 20 and the hollow agitating shaft 1 connected to the vibration sleeve 17 are both vibrated. The shaft 16 is eccentrically mounted, and the eccentric amount is gradually increased from the agitating sleeve 13 to the vibrating sleeve 17 in the direction of the hollow agitating shaft 1, the eccentric amount at the vibrating sleeve 17 is maximum, and the eccentric amount at the agitating sleeve 13 is zero. Since the bearing sleeve located in the vibration sleeve 17 is the eccentric bearing sleeve 21, the bearing sleeve located in the agitating sleeve 13 is a non-eccentric agitating end bearing sleeve 27, that is, the present invention is a single-ended eccentric structure. During operation, the vibration drive mechanism 7 outputs power, and the vibration shaft 16 is driven by the belt to rotate at a high speed. The high-speed rotating vibration shaft 16 forces the hollow agitator shaft 1 and the agitating arm 2 and the blade 3 eccentrically mounted thereon to vibrate due to the eccentric bearing. The eccentric action of the sleeve 21 causes the high-speed rotating vibration shaft 16 to generate a large centrifugal force, and vibrates while the stirring device is forcibly stirred, so that the cement particles in the mixing drum 5 are in a vibrating state, destroying the aggregate of the cement, greatly Reduces the viscosity and internal friction between the material particles, improves the mixing efficiency, and reduces Description

Low production costs. Since the left and right ends of the hollow agitating shaft 1 are respectively connected to the agitating sleeve 13 and the vibrating sleeve 17, the agitating sleeve 13 transmits the torque output from the agitation driving mechanism 4 to the hollow agitating shaft 1 to drive the hollow agitating shaft 1 to rotate. Since the agitating drive end support bearing 18 and the vibrating drive end support bearing 19 are mounted on the vibrating shaft 16, the hollow agitating shaft 1 and the vibrating shaft 16 can be relatively independently moved by the independent power driving devices.

[0038] As shown in FIG. 1 and FIG. 10, a stirring end eccentric block 22 is fixedly connected to the vibration shaft 16 and located inside the stirring sleeve 13, and the vibration shaft 16 is located in the vibration sleeve 17 or the vibration sleeve. The vibrating end eccentric block 23 is fixedly connected to the right side of the cylinder 17; the agitating end eccentric block 22 and the vibrating end eccentric block 23 are used to balance the eccentric force of the hollow agitating shaft 1, the agitating arm 2 and the agitating blade 3 to generate an inertial force and an inertial force moment, thereby ensuring The vibration shaft 16 achieves dynamic balance. In the process of vibration agitation, the entire agitation mechanism and the agitation sleeve 13 are both of the vibrating masses, and the mass thereof is very large, so even in the case where the amount of eccentricity is small, the vibrating shaft 16 has a large mass and the rotational speed of the vibrating shaft 16 It is also very high, so it can provide a large exciting force to the stirring device, and the vibration energy of the stirring mechanism is large, which can obviously improve the mixing quality and stirring efficiency of the concrete. In addition, since the vibration shaft 16 is dynamically balanced according to the mechanical principle, the vibration shaft 16 itself does not vibrate during the vibration stirring process, and the vibration is not transmitted to the mixer frame and other components, which can be well eliminated. The adverse effects of vibration on other parts of the machine, thus improving the reliability and service life of the mixer.

[0039] As shown in FIG. 5, the agitation unit includes a stirring arm 2 fixedly coupled to the outer wall of the hollow agitating shaft 1, and a stirring blade 3 mounted at the end of the agitating arm 2, the agitating surface of the agitating blade 3 is mounted thereto The angle between the stirring arms 2, that is, the axial mounting angle of the stirring blades is 30 ° to 45. .

[0040] As shown in FIG. 5, the two hollow agitating shafts 1 are a first hollow agitating shaft 1-1 and a second hollow agitating shaft 1-2, respectively, and a first hollow agitating shaft 1 installed in the mixing drum 5 -1 The stirring blade of the rightmost stirring unit is the first returning blade 3-1 pushing the agitated material to the center of the mixing drum 5, the axial mounting angle of the first returning blade 3-1 and the second hollow agitating shaft 1-2 corresponding to the axial mounting angle of the stirring blade of the leftmost stirring unit; the stirring blade of the rightmost stirring unit of the second hollow stirring shaft 1-2 installed in the mixing drum 5 is for pushing the stirred material to the mixing drum 5 The central second returning vane 3-2, the axial mounting angle of the second returning vane 3-2 corresponds to the axial mounting angle of the agitating vane mounted to the leftmost agitating unit of the first hollow agitating shaft 1-1. The specific arrangement direction of the agitating blades is such that the agitating blades on one of the hollow agitating shafts push the mixture to move in one direction in the axial direction, while the agitating blades on the other of the hollow agitating shafts push the mixture in the axial direction toward the other The one direction movement, and the first return blade 3-1 and the second return blade 3-2 allow the mixture to be pushed from the end of the mixer drum 5 to the center, so that the mixture completes the circulating agitation throughout the mixer drum 5. In the present embodiment, the agitation drive mechanism 4 is coupled to the agitation drive shaft 11 located at the left end of the first hollow agitator shaft 1-1.

In the embodiment, the agitation driving mechanism 4 is a stirring gear motor, and the vibration driving mechanism 7 is a vibration deceleration motor.

[0042] In this embodiment, the agitating sleeve 13 and the agitating transmission shaft 11 , between the agitating transmission shaft bearing housing 15 and the frame 6 and between the vibration driving end supporting bearing housing 25 and the bracket 6 are bolted. fixed.

Embodiment 2

[0044] As shown in FIG. 2 and FIG. 6, this embodiment is different from the embodiment 1 in that the number of the agitation driving mechanisms 4 is two, and the two agitation driving mechanisms 4 are respectively connected to two agitating transmission devices. The two vibrating stirring devices are respectively driven to rotate, that is, one of the agitating driving mechanisms 4 is connected with the agitating drive shaft 11 at the left end of the first hollow agitating shaft 1-1, and the other agitating driving mechanism 4 is located at the left end of the second hollow agitating shaft 1-2. The agitating drive shaft 11 is connected.

Embodiment 3

[0046] As shown in FIG. 3 and FIG. 7, this embodiment is different from Embodiment 1 in that the number of the vibration drive motors 7 is Description

For the two, the two vibration drive motors 7 are respectively connected to the two vibration shafts 16 via the transmission belt 24, that is, the right end of the corresponding vibration shaft inside the first hollow agitator shaft 1-1 is connected to one of the vibration motors through the transmission belt, and the second hollow The right end of the corresponding vibration shaft inside the agitator shaft 1-2 is also connected to another vibration motor via a drive belt.

Embodiment 4

[0048] As shown in FIG. 4 and FIG. 8, this embodiment is different from the embodiment 3 in that the number of the agitation driving mechanisms 4 is two, and the two agitation driving mechanisms 4 are respectively connected to the two agitation transmission devices. The two vibrating stirring devices are respectively driven to rotate, that is, one of the agitating driving mechanisms 4 is connected with the agitating drive shaft 11 at the left end of the first hollow agitating shaft 1-1, and the other agitating driving mechanism 4 is located at the left end of the second hollow agitating shaft 1-2. The agitating drive shaft 11 is connected.

[0049] The working principle of the present invention is: after the mixing material is put into the mixing drum 5, the stirring driving mechanism 4 and the vibration driving mechanism 7 are simultaneously activated or the vibration driving mechanism 7 is started within a few seconds after the stirring driving mechanism 4 is activated. Then, the agitating drive mechanism 4 drives the two hollow agitating shafts 1 and the agitating blades 3 mounted thereon to rotate in synchronism with the counter-rotating gears 12, and continuously pushes the materials in the mixing drum 5 for axial and axial circulation stirring; The vibration driving mechanism 7 drives the two vibration shafts 16 to rotate at a high speed through the belt drive, forcing the agitating device eccentrically mounted thereon to generate vibration; and further, under the joint action of the stirring and vibration of the stirring mechanism, the material is realized in the entire mixing drum 5 The space is fully and evenly agitated. After a period of vibration stirring (the specific mixing time is determined by the experiment), the concrete mixture has been stirred evenly, at this time, the stirring drive mechanism 4 and the vibration drive mechanism 7 are turned off simultaneously or a few seconds before the stirring drive mechanism 4 is turned off. After the vibration drive mechanism 7 is closed, the discharge door is opened, and the already stirred mixture is discharged from the discharge door at the bottom end of the mixer drum 5.

[0050] The following is a comparative test of the double-shaft vibration stirring and the ordinary twin-shaft mixing under the three different stirring conditions in the case that the concrete mix ratio and the test method are the same:

[0051] (1) According to the design mix ratio vibration stirring, the mixing time is dry mix 8s, wet mix 30s;

[0052] (2) turn off the vibration motor stirring (equivalent to the ordinary twin-shaft mixing), the mixing time is dry mixing 8s, wet mixing 60s;

[0053] (3) Turn off the vibration motor stirring (equivalent to the ordinary twin-shaft stirring), the mixing time is dry mixing for 8s, wet mixing for 30s.

[0054] The comparison test data of the twin-shaft vibration stirring and the ordinary twin-shaft stirring 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.

[0055]

[0056] Table 1 Comparison test data of double-shaft vibration mixing and ordinary twin-shaft mixer Description

[0057] Note: Δ 上 in the above table is the relative error of mortar density in concrete of different parts of the same tank, and AG is the relative error of the mass of coarse aggregate per unit volume of concrete in different parts of the same tank. Δ M and AG are used as indicators for the homogeneity of concrete mix, according to the requirements of homogeneous concrete in Concrete Mixer: Λ Μ < 0. 8 % , Δ 0 < 5 %, ie the homogeneity of concrete mix The relative error Δ Μ of the density of the mortar in the obtained concrete and the relative error AG of the mass of the coarse aggregate 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, and 7, 0 and ^ are used as the evaluation indexes of the average compressive strength of the 7d hardened concrete test block; The better the concrete quality, the larger the σ and C _v , indicating the worse the quality of the concrete.

[0058] As can be seen from Table 1, (1) Concrete mixture homogeneity: Δ Μ and Δ G 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%, ie (21. 763-18. 741 /18. 741 = 16. 1 %; 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 compressive strength of the concrete after stirring by the twin-shaft vibration mixer Strength 7 is the average compressive strength of concrete after mixing with a conventional twin-shaft mixer; 7 is increased by about 26%, S卩(21. 763-17. 215) /17. 215 = 26. 4 %; and the data in Table 1 found, resulting in (1) with stirring concrete σ, C _v than (2) and (3) stirring the resulting concrete σ, C _v Described high compressive strength of the concrete vibration was stirred.

11 is a probability distribution curve of the average compressive strength of the concrete test block obtained by the gear synchronous double-shaft vibration stirrer and the common gear synchronous double-shaft vibration stirrer under different stirring conditions, which can be seen from the figure. The average compressive strength of the 7d hardened concrete test piece of the concrete obtained under the stirring condition (1) is higher than the average compressive strength of the 7d hardened concrete test piece obtained under the stirring conditions (2) and (3).

[0060] 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

Claim

A gear synchronous double-shaft vibration mixer, comprising: a frame (6), a stirring transmission device, a vibration transmission device, a vibration stirring device, a stirring driving mechanism (4) and a vibration driving mechanism (7), The stirring drive mechanism (4) is disposed on a left side of the vibration stirring device, the vibration driving mechanism (7) is disposed on a right side of the vibration stirring device, and the stirring driving mechanism (4) passes the stirring The transmission device is connected to the vibration agitation device and drives the vibration agitation device for agitation. The vibration drive mechanism (7) is connected to the vibration agitation device by the vibration transmission device and drives the vibration agitation device to generate vibration. The agitation drive mechanism (4) and vibration The driving mechanism (7) is fixedly mounted on the frame (6); the vibration stirring device comprises a mixing drum (5) fixedly mounted on the frame (6) and disposed inside the mixing drum (5) and for material a stirring mechanism continuously driving the stirring, the stirring mechanism comprising a hollow stirring shaft (1) mounted on the cylinder of the mixing drum (5) through a bearing and fixedly mounted in a hollow from left to right a plurality of stirring units on the outer wall of the mixing shaft (1), the two ends of the hollow stirring shaft (1) respectively pass through the left and right ends of the mixing drum (5), and the hollow stirring shaft (1) is provided with two ends The vibration shafts (16) at the left and right ends of the mixing drum (5) are respectively pierced; 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 (5). Two hollow agitating shafts (1) corresponding to the two stirring mechanisms are arranged in parallel inside the mixing drum (5); the number of the agitating transmissions is two and two agitating transmissions are respectively mounted on the two hollow agitating shafts ( 1) at the left end, two synchronizing gears (12) are installed between the two agitating transmissions and transmit power through two synchronizing gears (12); the number of the vibrating transmissions is two, and the two vibrating transmissions respectively Mounted on the right end of the two hollow agitator shafts (1), the two vibration transmissions are fixedly connected to the two vibration shafts (16).

2. A gear synchronous twin-shaft vibration mixer according to claim 1, wherein the number of the agitation drive mechanisms (4) is one, and the agitation drive mechanism (4) is connected to one of the agitation transmissions. .

3. A gear synchronous twin-shaft vibration mixer according to claim 1, wherein the number of the agitation driving mechanisms (4) is two, and two agitating drive mechanisms (4) respectively and two The damper transmission is coupled and drives the two vibrating agitators to rotate, respectively.

4. A gear synchronous twin-shaft vibration stirrer according to claim 1, 2 or 3, characterized in that the number of the vibration drive mechanisms (7) is one, and the vibration drive mechanism (7) passes through the transmission belt ( 24) and the timing belt (26) is connected to the two vibration shafts (16).

5. A gear synchronous twin-shaft vibration stirrer according to claim 1, 2 or 3, characterized in that the number of the vibration drive mechanisms (7) is two, two vibration drive mechanisms (7) The two vibration axes (16) are respectively connected by a transmission belt (24).

6. A gear-type twin-shaft vibrating mixer according to claim 1, wherein said agitating transmission comprises a stirring drive shaft (11) and a stirring sleeve (13), said agitating sleeve (13) fixed on the right end of the stirring transmission shaft (11), the left end of the hollow stirring shaft (1) and the vibration shaft (16) are located in the stirring sleeve (13), and the hollow stirring shaft (1) and The stirring sleeve (13) is fixedly connected, the vibration shaft (16) is sleeved with a stirring end bearing sleeve (27), and the stirring end bearing sleeve (27) is mounted with a stirring driving end supporting bearing (18). The stirring end bearing sleeve (27) and the stirring driving end supporting bearing (18) are both disposed in the stirring sleeve (13), and the stirring driving end supporting bearing (18) is fixedly connected with the stirring sleeve (13); Two synchronizing gears (12) are mounted between the agitating drive shafts (11) of the two agitating transmissions, and the agitating drive mechanism (4) is coupled to the agitating drive shaft (11) via a coupling (10); The agitating drive shaft (11) is sleeved with a stirring drive shaft bearing (14), and the agitating drive shaft bearing (14) is located at the synchronous tooth (12) Between the stirring sleeve (13), the agitating drive shaft bearing (14) is externally mounted with a stirring drive shaft bearing housing (15), and the stirring transmission shaft bearing housing (15) is fixed to the frame (6) )on. Claim

7. A gear synchronous twin-shaft vibration stirrer according to claim 1, wherein said vibration transmission device comprises a vibration sleeve (17) disposed on the right side of the mixing drum (5), said vibration The sleeve (17) is fixedly mounted on the right end of the hollow agitating shaft (1), and the vibrating sleeve (17) is provided with an eccentric bearing sleeve (21) sleeved on the vibration shaft (16) and mounted on the eccentric bearing sleeve (21) The vibration bearing (20), the vibration bearing (20) is fixedly connected with the vibration sleeve (17); the vibration shaft (16) is sleeved with a vibration end bearing sleeve (8), the vibration The end bearing sleeve (8) is located on the right side of the vibration sleeve (17), and the vibration end bearing sleeve (8) is mounted with a vibration drive end support bearing (19), and the vibration drive end support bearing (19) is mounted outside. There is a vibration drive end support bearing seat (25), and the vibration drive end support bearing seat (25) is fixed on the bracket (6).

8. A gear synchronous twin-shaft vibration stirrer according to claim 7, wherein a stirring end eccentric block is fixedly connected to the vibration shaft (16) and located inside the stirring sleeve (13). A vibrating end eccentric block (23) is fixedly connected to the vibrating shaft (16) and to the right side of the vibrating sleeve (17).

9. A gear synchronous twin-shaft vibration stirrer according to claim 1, wherein said agitating unit comprises a stirring arm (2) fixedly coupled to an outer wall of the hollow agitating shaft (1) and mounted on the agitating The agitating blade (3) at the end of the arm (2), the angle between the agitating surface of the agitating blade (3) and the agitating arm (2) to which it is mounted, that is, the axial mounting angle of the agitating blade is 30 ° to 45 °.

10. A gear synchronous twin-shaft vibration mixer according to claim 1, wherein said two hollow agitating shafts (1) are respectively a first hollow agitating shaft (1-1) and a second hollow. The stirring shaft (1-2), the stirring blade of the stirring unit at the right end of the first hollow stirring shaft (1-1) installed in the mixing drum (5) is the first to push the stirred material to the center of the mixing drum (5) a returning blade (3-1), the axial mounting angle of the first returning blade (3-1) corresponds to the axial mounting angle of the agitating blade mounted to the leftmost agitating unit of the second hollow agitating shaft (1-2) The agitating blade of the rightmost agitating unit of the second hollow agitating shaft (1-2) installed in the mixing drum (5) is a second returning blade that pushes the stirred material to the center of the mixing drum (5) (3- 2) The axial mounting angle of the second returning vane (3-2) corresponds to the axial mounting angle of the agitating blades mounted to the leftmost agitating unit of the first hollow agitating shaft (1-1).