WO2020155917A1

WO2020155917A1 - Vibration device for mixing machine

Info

Publication number: WO2020155917A1
Application number: PCT/CN2019/126849
Authority: WO
Inventors: 张良奇; 李冠峰; 孔鲜宁
Original assignee: 许昌德通振动搅拌技术有限公司
Priority date: 2019-01-28
Filing date: 2019-12-20
Publication date: 2020-08-06
Also published as: CN109483736A

Abstract

A vibration device for a mixing machine, comprising a vibration transmission device (1), a transmission shaft (2), a mixing shaft (3), bearings I (4), a bearing seat I (5), a bearing II (6), and a bearing seat II (7). The transmission shaft (2) is arranged so as to pass through the bearing seat I (5), and is supported in the bearing seat I (5) by means of at least two bearings I (4); one end of the transmission shaft is connected to the vibration transmission device (1), and the other end is rotationally connected to the bearing seat II (7) by means of the bearing II (6). The bearing seat II (7) is fixedly connected to a shaft head at one end of the mixing shaft (3), and the rotational center line of the transmission shaft (2) is arranged so as to be offset from the inner raceway axis of the bearing II (6). The present vibration device for a mixing machine has the following advantages: simple structure; convenient assembly, disassembly, and repair; low manufacturing cost; high material practicability; stable vibration performance; and flexible and varied vibration excitation scheme implementation.

Description

Vibration device for mixer

Technical field

The invention belongs to the technical field of mixers, and particularly relates to a vibration device suitable for various mixture mixers.

Background technique

A mixer is a machine that can mix multiple raw materials into a specific mixture. According to the mixing method, it can be divided into two categories: forced mixer and self-falling mixer. The forced mixer is favored by customers because of its good mixing quality and high mixing efficiency. It is currently the mainstream mixing equipment at home and abroad. With the continuous improvement of users' requirements for mixing quality and the emergence of new materials, especially materials that are more difficult to mix, higher requirements are placed on the technical performance and reliability of traditional mixing equipment. Take the cement concrete mixer as an example: the traditional forced mixer belongs to "static mixing", which generally suffers from high energy and raw material consumption, uneven mixing of concrete in microscopic view, and poor material adaptability. If the cement slurry in the macroscopically uniform concrete is observed under a microscope after mixing, there will still be 10%-20% of cement particles "clumping" in the microscopic view, which affects the mixing quality of concrete and the durability of concrete components.

Vibration mixing technology has been recognized at home and abroad as one of the most economical methods to improve mixing quality and efficiency. From the 1930s to the present, the research results of domestic and foreign scholars have shown that: vibration stirring can increase the speed of particles in the mixture, increase the effective number of collisions, effectively reduce the phenomenon of cement particles "agglomeration", and significantly strengthen the aggregate and cement The bonding strength of the interface between the stones improves the weakest link in the concrete, improves the strength of the concrete, improves the microstructure of the concrete, and extends the durability of the concrete components. Vibration device is the core of vibrating stirring equipment, but due to the late industrialization of vibrating stirring technology, with the increase in the types of mixtures and the improvement of the quality of mixing, the vibration device on the existing vibrating mixer has the structure, vibration effect and There is still room for further improvement in aspects such as reliability.

Summary of the invention

The purpose of the present invention is to solve the general problems of structure, vibration effect and reliability of the existing vibrating mixer vibration devices that need to be further improved, and to provide a simpler structure, better vibration effect, and higher reliability. Vibration device.

The technical scheme adopted by the present invention is:

A vibration device for a mixer, comprising a vibration transmission device, a transmission shaft, a bearing I, a bearing seat I, a bearing II and a bearing seat II. The transmission shaft penetrates the bearing seat I and passes through at least two of the bearings I Supported in the bearing seat I, one end of the drive shaft is connected to the vibration transmission device, and the other end is rotatably connected to the bearing seat II through the bearing II, and the bearing seat II is connected to one end of the stirring shaft The shaft head is fixedly connected, the rotation center line of the transmission shaft is offset from the inner race axis of the bearing II, and the inner race axis of the bearing II refers to the inner race of the bearing II along the transmission shaft Axial centerline.

Further, an eccentric sleeve is provided between the transmission shaft and the bearing II. The eccentric sleeve is a sleeve-like part including at least a set of outer circle and inner hole. Preferably, the eccentric sleeve is used for mounting the bearing II. The centerline of the outer circle is eccentrically arranged relative to the centerline of rotation of the transmission shaft.

Further, the transmission shaft includes a connecting shaft section, a supporting shaft section, and a third shaft section. The connecting shaft section refers to a shaft section for installing the bearing II, and the supporting shaft section refers to a shaft section for installing the bearing II. The shaft section of the bearing I, the connecting shaft section is eccentrically arranged,

Further, an eccentric sleeve is provided between the transmission shaft and the bearing II. Preferably, the eccentric sleeve is used to install the outer circle center line of the bearing II eccentrically with respect to the rotation center line of the transmission shaft, and the The connecting shaft section is set eccentrically.

Further, the transmission shaft includes a connecting shaft section, a supporting shaft section, and a third shaft section. The connecting shaft section refers to a shaft section for installing the bearing II, and the supporting shaft section refers to a shaft section for installing the bearing II. For the shaft section of the bearing I, the supporting shaft section is eccentrically arranged.

Further, an eccentric sleeve is provided between the transmission shaft and the bearing II. Preferably, the eccentric sleeve is used to install the outer circle center line of the bearing II eccentrically with respect to the rotation center line of the transmission shaft, and the The supporting shaft section is set eccentrically.

Further, the bearing II is an inner ring eccentric bearing, and the inner ring eccentric bearing refers to the eccentricity between the centerline of the inner hole of the inner ring and the axis of the inner raceway (that is, the centerline of the inner raceway along the axial direction of the drive shaft) Bearings.

Further, an eccentric sleeve is provided between the transmission shaft and the bearing II. Preferably, the eccentric sleeve is used to install the outer circle center line of the bearing II eccentrically with respect to the rotation center line of the transmission shaft, and the Bearing II is an eccentric inner ring bearing.

Further, the supporting shaft section is eccentrically arranged, and the connecting shaft section is eccentrically arranged.

Further, an eccentric sleeve is provided between the transmission shaft and the bearing II. Preferably, the eccentric sleeve is used for mounting the outer circle center line of the bearing II to be eccentrically arranged relative to the rotation center line of the transmission shaft. The shaft section is eccentrically arranged, and the connecting shaft section is eccentrically arranged.

Further, the bearing II is an inner ring eccentric bearing, and the connecting shaft section is eccentrically arranged.

Further, an eccentric sleeve is provided between the transmission shaft and the bearing II. Preferably, the eccentric sleeve is used for mounting the centerline of the outer circle of the bearing II to be eccentrically arranged relative to the rotation centerline of the transmission shaft. Ⅱ is the inner ring eccentric bearing, and the connecting shaft section is eccentrically arranged.

Further, the bearing II is an inner ring eccentric bearing, and the supporting shaft section is eccentrically arranged.

Further, an eccentric sleeve is provided between the transmission shaft and the bearing II. Preferably, the eccentric sleeve is used for mounting the centerline of the outer circle of the bearing II to be eccentrically arranged relative to the rotation centerline of the transmission shaft. Ⅱ is an inner ring eccentric bearing, and the supporting shaft section is eccentrically arranged.

Further, the connecting shaft section is eccentrically arranged, and the supporting shaft section is eccentrically arranged, and the bearing II is an inner ring eccentric bearing.

Further, an eccentric sleeve is provided between the transmission shaft and the bearing II. Preferably, the eccentric sleeve is used for mounting the centerline of the outer circle of the bearing II eccentrically with respect to the rotation centerline of the transmission shaft, and the connection The shaft section is eccentrically arranged, and the supporting shaft section is eccentrically arranged, and the bearing II is an inner ring eccentric bearing.

Further, a balance weight is provided between the bearing seat I and the bearing seat II. The balance weight rotates synchronously with the transmission shaft and is used for single-sided dynamic balancing of the transmission shaft. The specific position and size of the balance weight are based on actual conditions. determine.

Further, a balance weight is also provided between the bearing seat I and the vibration transmission device. The balance weight rotates synchronously with the transmission shaft and is used to dynamically balance the transmission shaft on both sides. Its specific position and size are based on actual conditions. The situation is ok.

The beneficial effects of the present invention are:

1. The present invention provides a vibration device for a mixer, which has a simple structure and stable and reliable operation;

2. According to specific materials, a specific eccentric design and vibration transmission device design can be used to make the stirring device obtain a given amplitude and frequency, and it has strong adaptability to different materials;

3. During the working process, the amplitude and frequency are not affected by the load, the vibration performance is stable, and the consistency of the mixed material after mixing is good;

4. Adopting dynamic balance design, the vibrating device works stably, and the equipment has high reliability.

Description of the drawings

Figures 1-15 are respectively the structural schematic diagrams of the vibrating device for the mixer of the embodiment 1-15.

In the picture: 1. Vibration transmission device; 101, driven pulley; 102, belt; 103, driving motor; 104, driving pulley 2, drive shaft; 201, sleeve; 202, balance weight; 203, sealing ring 3. Shaft; 4. Bearing Ⅰ; 5. Bearing seat Ⅰ; 501, bearing end cover; 502, lubricating oil passage; 6. Bearing Ⅱ; 601, shaft end retaining ring; 7. Bearing seat Ⅱ; 701, dust cover 8. Eccentric sleeve.

detailed description

The present invention will be further described below in conjunction with the drawings and specific embodiments.

Example 1

Figure 1 is a schematic structural diagram of embodiment 1 of the present invention. A vibration device for a mixer is integrally fixed on the frame and includes a vibration transmission device 1, a transmission shaft 2, a stirring shaft 3, a bearing I4, a bearing seat I5, and a bearing Ⅱ6 and bearing seat Ⅱ7. The vibration transmission device 1 is powered by a driving motor 103. The output shaft of the motor is provided with a driving pulley 104, which is connected to the driven pulley 101 through a belt 102. The transmission shaft 2 is a multi-stage stepped shaft, including a supporting shaft section, a connecting shaft section and a third shaft. The shaft section, wherein the connecting shaft section refers to the shaft section used to install the bearing II, the supporting shaft section refers to the shaft section used to install the bearing I, and the third shaft section refers to the shaft section except the supporting shaft section and the connecting shaft. For the shaft section other than the section, the transmission shaft 2 runs through the bearing housing I5 and is supported in the bearing housing I5 through two bearings I4. One end of the transmission shaft is keyed to the driven pulley 101 of the vibration transmission device 1, and the other end is through the bearing II6. Rotating connected with bearing seat II7. Both ends of the transmission shaft 2 are respectively provided with shaft end retaining rings 601, which are connected with the transmission shaft 2 by fastening bolts. Bearing end covers 501 are provided at both ends of the bearing seat I5, and the bearing end covers 501 are connected to the bearing seat I5 by fastening bolts. A lubricating oil passage 502 is provided on the bearing seat I5 and the bearing seat II7, and the lubricating oil passage 502 intersects the oil passages of the outer rings of the bearing I4 and the bearing II6, and is used for lubricating the bearing I4 and the bearing II6. A sleeve 201 is provided on the transmission shaft 2 between the bearing seat I5 and the driven pulley 101 for axial positioning of the bearing I4 and the driven pulley 101, and the transmission shaft between the bearing seat I5 and the bearing seat II7 2 is provided with a sleeve 201 for setting a balance weight 202. A dust cover 701 is provided at one end of the bearing seat II7, and a sealing ring 203 is provided on the bearing end cover 501 and the dust cover 701. The dust cover 701 is connected to the bearing seat Ⅱ7 by fastening bolts, and the other end of the bearing seat Ⅱ7 is connected with The shaft head at one end of the stirring shaft 3 is welded. The center line of the connecting shaft section of the transmission shaft 2 is processed eccentrically relative to the center line of the third shaft section of the transmission shaft 2, and the eccentricity is e=2mm. Therefore, after assembly, the rotation center line of the transmission shaft 2 and the inner raceway axis of the bearing II 6 are offset. Wherein, the inner raceway axis of the bearing II6 specifically refers to the centerline of the inner raceway of the bearing II6 along the axial direction of the transmission shaft 2.

In specific use, a proper amount of lubricating grease is injected through the oil passage 502 to start the drive motor 103. The drive motor 103 drives the transmission shaft 2 to rotate through the driven pulley 101. The working speed of the transmission shaft 2 is 1600 rpm. During the rotation, due to the transmission shaft 2 There is an offset setting between the centerline of rotation and the axis of the inner raceway of bearing Ⅱ6, so the high-frequency and low-amplitude vibration is transmitted to bearing seat Ⅱ7 through bearing Ⅱ6, and to one end of the stirring shaft 3 through bearing seat Ⅱ7, thereby driving the entire stirring The device vibrates. At the same time, a sleeve 201 is provided on the transmission shaft 2 between the bearing seat I5 and the bearing seat II7, the sleeve 201 is provided with a balance weight 202, and the end surface of the driven pulley is also provided with a balance weight 202, which effectively reduces transmission To the bad vibration of the frame and transmission system. Realize that the mixer vibrates while stirring the mixture, so that the cemented material is in a vibrating state when it is circularly moved, fully liquefied, disperses the agglomeration phenomenon, fully combines the aggregate and cementitious materials, and improves the uniformity of the mixture. Save raw materials.

Example 2

The difference from Embodiment 1 is that an eccentric sleeve 8 is provided between the transmission shaft 2 and the bearing II 6. The eccentric sleeve 8 is a ring-shaped non-stepped eccentric sleeve. The eccentric sleeve is preferably used to install the outer circle center line of the bearing II relative to the The rotation center line of the transmission shaft is set eccentrically to realize the offset setting of the rotation center line of the transmission shaft 2 and the inner raceway axis of the bearing Ⅱ6.

Example 3

The difference from Embodiment 1 is that an eccentric sleeve 8 is provided between the transmission shaft 2 and the bearing II 6. The eccentric sleeve 8 is a ring-shaped non-stepped eccentric sleeve. The eccentric sleeve is preferably used to install the outer circle center line of the bearing II relative to the The rotation center line of the transmission shaft is set eccentrically, and the connecting shaft section of the transmission shaft 2 is set eccentrically, so that the rotation center line of the transmission shaft 2 and the inner raceway axis of the bearing II 6 are offset.

Example 4

The difference from the first embodiment is that the supporting shaft section of the transmission shaft 2 is eccentrically arranged to realize the offset setting of the rotation center line of the transmission shaft 2 and the inner raceway axis of the bearing II6.

Example 5

The difference from Embodiment 1 is that the supporting shaft section of the transmission shaft 2 is eccentrically arranged, and an eccentric sleeve 8 is provided between the transmission shaft 2 and the bearing II 6. The eccentric sleeve 8 is a ring-shaped non-step eccentric sleeve, and the eccentric sleeve is preferably used for The centerline of the outer circle of the mounting bearing II is eccentrically arranged with respect to the rotation centerline of the transmission shaft, so that the rotation centerline of the transmission shaft 2 is offset from the axis of the inner raceway of the bearing II6.

Example 6

The difference from embodiment 1 is that the bearing II 6 is an inner ring eccentric bearing, which refers to the eccentricity between the center line of the inner hole of the inner ring and the axis of the inner raceway (the center line of the inner race along the axis of the drive shaft) The bearing (the following is the same as above, and will not be repeated) to realize the offset setting of the rotation centerline of the transmission shaft 2 and the inner raceway axis of the bearing Ⅱ6.

Example 7

The difference from embodiment 1 is that the bearing II 6 is an inner ring eccentric bearing (as described above), and an eccentric sleeve 8 is provided between the transmission shaft 2 and the bearing II 6, and the eccentric sleeve 8 is an annular non-step eccentric sleeve. Preferably, the eccentric sleeve is used to install the centerline of the outer circle of the bearing II eccentrically with respect to the centerline of rotation of the transmission shaft, so that the centerline of rotation of the transmission shaft 2 is offset from the axis of the inner raceway of the bearing II6.

Example 8

The difference from Embodiment 1 is that the connecting shaft section of the transmission shaft 2 is eccentrically arranged, and the supporting shaft section of the transmission shaft 2 is eccentrically arranged, so that the rotation center line of the transmission shaft 2 is offset from the axis of the inner raceway of the bearing II6.

Example 9

The difference from embodiment 1 is that: the connecting shaft section of the transmission shaft 2 is eccentrically arranged, and the supporting shaft section of the transmission shaft 2 is eccentrically arranged, and an eccentric sleeve 8 is provided between the transmission shaft 2 and the bearing Ⅱ6. The eccentric sleeve 8 is The ring-shaped non-step eccentric sleeve, preferably the eccentric sleeve is used to install the outer circle center line of the bearing II to be eccentrically arranged relative to the rotation center line of the transmission shaft, so that the rotation center line of the transmission shaft 2 and the inner race axis of the bearing II 6 are offset.

Example 10

The difference from Embodiment 1 is that the connecting shaft section of the transmission shaft 2 is eccentrically arranged, and the bearing II 6 is an inner ring eccentric bearing (as described above), which realizes that the rotation center line of the transmission shaft 2 is offset from the inner race axis of the bearing II 6 Shift settings.

Example 11

The difference from Embodiment 1 is that the connecting shaft section of the transmission shaft 2 is eccentrically arranged, and the bearing II 6 is an inner ring eccentric bearing (as described above), and an eccentric sleeve 8 is also provided between the transmission shaft 2 and the bearing II 6 , The eccentric sleeve 8 is a ring-shaped non-step eccentric sleeve, preferably the eccentric sleeve is used to install the outer circle center line of the bearing II to be eccentrically arranged relative to the rotation center line of the transmission shaft to realize the rotation center line of the transmission shaft 2 and the inner race axis of the bearing II 6 Offset setting.

Example 12

The difference from Embodiment 1 is that the supporting shaft section of the transmission shaft 2 is eccentrically arranged, and the bearing II 6 is an inner ring eccentric bearing (as described above), which realizes the offset of the rotation center line of the transmission shaft 2 and the inner raceway axis of the bearing II 6 Set up.

Example 13

The difference from Embodiment 1 is that the supporting shaft section of the transmission shaft 2 is eccentrically arranged, and the bearing II 6 is an inner ring eccentric bearing (as described above), and an eccentric sleeve 8 is also provided between the transmission shaft 2 and the bearing II 6. The eccentric sleeve 8 is a ring-shaped non-stepped eccentric sleeve. Preferably, the eccentric sleeve is used to install the outer circle center line of the bearing II to be eccentrically arranged relative to the rotation center line of the transmission shaft, so that the rotation center line of the transmission shaft 2 is offset from the inner raceway axis of the bearing II 6 Shift settings.

Example 14

The difference from Embodiment 1 is that the supporting shaft section of the transmission shaft 2 is set eccentrically, and the connecting shaft section of the transmission shaft 2 is set eccentrically, and the bearing II 6 is an inner ring eccentric bearing (as described above) to realize the rotation of the transmission shaft 2 The center line is offset from the axis of the inner raceway of bearing Ⅱ6.

Example 15

The difference from Embodiment 1 is that: the supporting shaft section of the transmission shaft 2 is eccentrically arranged, and the connecting shaft section of the transmission shaft 2 is eccentrically arranged, and the bearing II 6 is an inner ring eccentric bearing (as described above), and the transmission shaft 2 and An eccentric sleeve 8 is also arranged between the bearings II 6. The eccentric sleeve 8 is a ring-shaped non-step eccentric sleeve. The eccentric sleeve is preferably used to install the center line of the outer circle of the bearing II eccentrically with respect to the rotation center line of the transmission shaft to realize the transmission shaft 2 The center line of rotation is offset from the axis of the inner raceway of bearing Ⅱ6.

In any two or more eccentric combination schemes of all the above embodiments, it is finally necessary to realize the offset setting of the rotation center line of the transmission shaft 2 and the inner raceway axis of the bearing II 6, and the resultant offset is the vector sum of each eccentricity. It can be seen from the above specific embodiments that the present invention provides a vibrating device for a mixer with flexible eccentric modes, simple overall structure, good vibration effect, and high reliability.

The foregoing descriptions are only preferred embodiments of the present invention, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

A vibration device for a mixer, which is characterized in that it comprises a vibration transmission device, a transmission shaft, a stirring shaft, a bearing I, a bearing seat I, a bearing II and a bearing seat II. The transmission shaft penetrates the bearing seat I and passes through At least two of the bearings I are supported in the bearing seat I, one end of the transmission shaft is connected to the vibration transmission device, and the other end is rotatably connected to the bearing seat II through the bearing II, the bearing seat II It is fixedly connected with the shaft head at one end of the stirring shaft, and the rotation center line of the transmission shaft is offset from the inner race axis of the bearing II.
The vibration device for a mixer according to claim 1, wherein an eccentric sleeve is provided between the transmission shaft and the bearing II.
The vibration device for a mixer according to claim 1 or 2, wherein the transmission shaft includes a connecting shaft section, a supporting shaft section, and a third shaft section, and the connecting shaft section is used to install the The shaft section of the bearing II, the supporting shaft section refers to the shaft section used for mounting the bearing I, and the connecting shaft section is eccentrically arranged.
The vibration device for a mixer according to claim 1 or 2, wherein the transmission shaft includes a connecting shaft section, a supporting shaft section, and a third shaft section, and the connecting shaft section is used to install the The shaft section of the bearing II, the supporting shaft section refers to the shaft section used for mounting the bearing I, and the supporting shaft section is eccentrically arranged.
The vibration device for a mixer according to claim 1 or 2, wherein the bearing II is an inner ring eccentric bearing.
The vibration device for a mixer according to claim 3, wherein the supporting shaft section is eccentrically arranged.
The vibration device for a mixer according to claim 3, wherein the bearing II is an inner ring eccentric bearing.
4. The vibration device for a mixer according to claim 4, wherein the bearing II is an inner ring eccentric bearing.
8. The vibration device for a mixer of claim 8, wherein the connecting shaft section is eccentrically arranged.
The vibration device for a mixer according to claim 1, wherein a balance weight is arranged between the bearing seat I and the bearing seat II.
9. The vibration device for a mixer according to claim 10, wherein a balance weight is also provided between the bearing seat I and the vibration transmission device.