CN116510846A

CN116510846A - Efficient and energy-saving sand mill device

Info

Publication number: CN116510846A
Application number: CN202310522303.9A
Authority: CN
Inventors: 张思沅
Original assignee: Dongguan Huahui Precision Machinery Co ltd
Current assignee: Dongguan Huahui Precision Machinery Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-08-01
Anticipated expiration: 2043-05-10
Also published as: CN116510846B

Abstract

The invention discloses a high-efficiency energy-saving sand mill device, which comprises a motor and a sand milling mechanism, wherein the sand milling mechanism comprises a shell, a main shaft and a sand milling assembly arranged on the main shaft, the motor comprises a motor stator and a motor rotor which are separated from each other, the motor stator is fixedly connected to the shell, the motor rotor is fixedly connected to the main shaft, and the motor stator is sleeved on the motor rotor in a sleeved mode and has a gap between the motor stator and the motor rotor; according to the efficient and energy-saving sand mill device, in the mode, the main shaft directly penetrates through the shell and is fixedly connected to the motor rotor, so that when the motor works, the motor rotor can directly transmit power to the main shaft, the use of a coupler and a bearing is avoided, the utilization of space of a factory site is facilitated, the energy loss under high power is reduced, and the situation that more belts and more tension are needed is avoided.

Description

Efficient and energy-saving sand mill device

Technical Field

The invention relates to a sand mill driving technology, in particular to a high-efficiency energy-saving sand mill device.

Background

The current era is the era of the vigorous development of new energy industry, the industrial scale of new energy material preparation is gradually changed, and in the preparation of new materials, the equipment iteration speed of an indispensable sand mill is gradually and continuously not in line with the development of the industry. The grinding machine as one kind of grinding equipment has the working principle that the grinding medium and material grains inside the grinding cavity are accelerated by the rotor rotating at high speed and the material is crushed and ground by means of collision between small material grains with high kinetic energy. In the existing sand mill technology, the common structure of the sand mill is that an asynchronous motor or a permanent magnet synchronous motor is used as power, and the power is connected into a transmission mechanism through belt transmission, gear transmission or a coupling to drive a rotor of the sand mill, so that materials are ground.

In the current era of pursuing high productivity, the sand mill is often large in capacity, and large capacity means that larger torque and larger motor power are required to drive equipment, so that energy conservation and high efficiency become main problems of the sand mill. For example, the most widely used sand mill in the market at present has a traditional structure that an asynchronous motor is used as power, a belt transmission is used as a transmission mechanism, and a rotor of the sand mill is driven. The asynchronous motor has low energy efficiency, and the energy loss of the secondary transmission is added, the system efficiency under the driving mode is usually only 72% -80%, and the energy loss is very large under high power, so that the cost of preparing new materials is greatly increased, and the energy conservation and emission reduction advocated by China are also overcome. Meanwhile, with the development of new energy material industry, the follow-up sand mill has higher capacity and larger capacity, and the energy waste of larger motor power is more. At high torques, the belt design requirements are more stringent, requiring a greater number of belts, greater tension, and greater tension results in higher motor bearing requirements, which can greatly increase the manufacturing and maintenance costs of the apparatus.

Based on the current situation, the energy-saving trend of the sand mill at present has the following schemes: 1. and a permanent magnet synchronous motor with higher energy efficiency is used for replacing the original asynchronous motor to drive. 2. The two-stage transmission and the multi-stage transmission are canceled, and the motor directly drives the sand mill, so that the loss caused by the two-stage transmission is avoided. 3. The two types of the permanent magnet motors are combined and used in a direct-drive mode by taking the permanent magnet motors as power.

The above solutions have drawbacks, in the solution 1, under the condition of large torque, the requirements for the design of the belt are more strict, a larger number of belts and a larger tensioning force are needed, and the requirements for the motor bearing are higher due to the larger tensioning force, which greatly increases the manufacturing cost and the maintenance cost of the equipment; the gear transmission and the coupling are connected, so that the equipment is oversized, the utilization of the space of a factory site is not facilitated, and the installation difficulty and the manufacturing cost are increased. The motor direct-drive mode is used in the scheme 2, the problem in the scheme 1 is avoided, but because the motor is independent and complete equipment, the motor is directly connected with a main shaft of the sand mill without a coupling, and thus, the main shaft of the whole sand mill is provided with bearings with different references, the motor and the sand mill are provided with unavoidable concentric deviation problems, the requirements on motor manufacturing precision and installation precision are very high, under large torque, the motor bearing friction is serious due to the fact that a little jump of the main shaft occurs, the failure rate of the motor bearing is high, the service life is short, the consumed power of the motor is increased due to the fact that the non-concentricity of the main shaft also causes the motor to sinter and damage when the deviation is serious, the equipment failure rate of the scheme is high, and the maintenance cost is large. The scheme 3 uses a permanent magnet synchronous motor for direct drive, which is a variant of the scheme 2, only the motor is replaced, and the problem of serious motor bearing friction caused by high-frequency micro-amplitude runout of the main shaft under the scheme cannot be solved.

Disclosure of Invention

The invention aims to provide an efficient and energy-saving sand mill device so as to solve the defects in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides an energy-efficient sand mill device, includes motor and sand grinding mechanism, sand grinding mechanism includes casing, main shaft and sets up in epaxial sand grinding subassembly, the motor includes motor stator and the motor rotor of phase separation, motor stator rigid coupling in on the casing, the motor rotor rigid coupling in on the main shaft, motor stator overcoat in motor rotor and have the clearance between the two.

According to the efficient and energy-saving sand mill device, the motor rotor is arranged on the main shaft through the distance sleeve.

The efficient and energy-saving sand mill device further comprises a shaft inclination angle adjusting mechanism, wherein the shaft inclination angle adjusting mechanism is used for adjusting the shaft inclination angle of the main shaft.

The efficient energy-saving sand mill device is characterized in that the shaft inclination angle adjusting mechanism comprises an inclinometer and a PLC controller, wherein the inclinometer is electrically connected with the PLC controller, and the inclinometer is used for measuring the inclination angle variation of the main shaft and inputting the inclination angle variation into the PLC controller.

The efficient energy-saving sand mill device, the shaft inclination angle adjusting mechanism comprises a square frame, the square frame is sleeved on the outer side of the main shaft, at least four rotating shafts are rotatably installed on the square frame, the rotating shafts are uniformly distributed circumferentially by taking the main shaft as the center, one side, close to the main shaft, of each rotating shaft is provided with a threaded section, the extending direction of each rotating shaft is consistent with the extending direction of the diameter of the main shaft, a movable block is connected to the threaded section in a threaded mode, a limiting frame is further fixed on the inner side of Fang Xingkuang, the limiting frame is attached to the two sides of the movable block and limits the moving direction of the movable block, a support is fixedly arranged on the movable block, and an adjusting rod is installed on the support.

According to the efficient and energy-saving sand mill device, the drag reducing ball is movably arranged at one end of the adjusting rod, which is close to the main shaft.

In the efficient and energy-saving sand mill device, gaps are reserved between the adjusting rod and the outer side wall of the main shaft.

The efficient energy-saving sand mill device is characterized in that a driven gear is fixedly arranged at one end, close to the main shaft, of the rotating shaft, a servo motor is fixedly connected to the square frame, a driving gear is fixedly arranged at the output end of the servo motor, and the driving gear and the driven gear are meshed with each other.

The efficient and energy-saving sand mill device is characterized in that the diameter of the driven gear is smaller than that of the driving gear.

The efficient energy-saving sand mill device is characterized in that the PLC is electrically connected with each servo motor.

In the technical scheme, the efficient and energy-saving sand mill device provided by the invention has the advantages that in the mode, the main shaft directly penetrates through the shell and is fixedly connected to the motor rotor, so that when the motor works, the motor rotor can directly transmit power to the main shaft, the use of a coupler and a bearing is avoided, the utilization of the space of a factory site is facilitated, the energy loss under high power is reduced, and the situation that more belts and more tension are needed is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a cross-sectional view of an energy efficient sander apparatus according to one embodiment of the present invention.

Fig. 2 is a schematic perspective view of a sand mill device with high efficiency and energy saving according to still another embodiment of the present invention.

FIG. 3 is a front view of an energy efficient sander apparatus according to yet another embodiment of the present invention.

FIG. 4 is a front view of an energy efficient sander apparatus according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view of the present invention between the adjustment rod, spindle and drag reducing ball.

Fig. 6 is a cross-sectional view of the invention between the adjustment lever, spindle and pressure adaptation assembly.

Fig. 7 is a cross-sectional view of the pressure adaptation assembly of the present invention.

Fig. 8 is a schematic perspective view of a spindle according to another embodiment of the present invention.

Fig. 9 is a cross-sectional view between an adjusting lever and a main shaft according to another embodiment of the present invention.

Fig. 10 is a cross-sectional view of an adjustment lever according to still another embodiment of the present invention.

Reference numerals illustrate:

11. a motor stator; 12. a motor rotor; 13. a distance sleeve; 2. a sanding mechanism; 21. a housing; 22. a main shaft; 221. a boss; 222. a first annular portion; 223. a second annular portion; 224. an inclined portion; 225. a roller; 226. a dynamic seal ring; 227. an annular limit part; 3. a shaft inclination angle adjusting mechanism; 31. an inclinometer; 32. a mounting frame; 33. a rotation shaft; 331. a driven gear; 332. a servo motor; 333. a drive gear; 34. a threaded section; 35. a moving block; 36. a limiting frame; 37. a bracket; 38. an adjusting rod; 381. drag reducing balls; 382. a drag reduction shaft; 4. a radial adjustment mechanism; 41. a mold frame; 42. an elastic telescopic rod; 43. a screw rod; 44. a stepping motor; 5. a pressure adaptive assembly; 51. a sliding block; 52. a limit spring; 53. a drag reduction column; 54. and a communicating cavity.

Detailed Description

In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1-10, an embodiment of the present invention provides a high-efficiency and energy-saving sand mill device, which includes a motor and a sand grinding mechanism 2, wherein the sand grinding mechanism 2 includes a housing 21, a main shaft 22 and a sand grinding assembly disposed on the main shaft 22, the motor includes a motor stator 11 and a motor rotor 12 that are separated from each other, the motor stator 11 is fixedly connected to the housing 21, the motor rotor 12 is fixedly connected to the main shaft 22, and the motor stator 11 is sleeved on the motor rotor 12 with a gap therebetween.

In particular, in this embodiment, the sanding mechanism 2 may fully refer to the prior art, which is different from the prior art in that the length of the main shaft 22 is longer, the length of the main shaft 22 is equal to the length of the main shaft plus the length of the motor shaft in the prior art, the motor may be a permanent magnet synchronous motor or an asynchronous motor, preferably a permanent magnet synchronous motor, compared with the asynchronous motor, the permanent magnet synchronous motor has higher energy efficiency, adopts a direct drive mode to avoid energy loss caused by two-stage transmission and multistage transmission, maximizes efficiency, is approximately equal to that of the permanent magnet synchronous motor, has energy transmission efficiency of about 92% -98%, and it is noted that the motor used in this embodiment is not an independent complete motor, and the parts of the motor used in this embodiment are a split motor stator 11 and a split motor rotor 12, that is, that the motor stator 11 and the motor rotor 12 are separately arranged, are not connected with each other or are not connected through a hard structure, and there is no bearing connection between the motor stator 11 and the motor rotor 12; in this embodiment, the output shaft of the sanding mechanism 2 and the output shaft of the motor are both the main shaft 22, which is equivalent to the integral formation of the two output shafts, and is a shaft, so that the use of a coupling is reduced, the use of a motor bearing is also reduced, the main shaft 22 can also directly use the bearing in the sanding mechanism 2, and if the two output shafts are connected in a direct driving manner of the motor, the problem of non-concentricity of the shaft and the motor is unavoidable; the motor stator 11 and the motor rotor 12 are both in the prior art, and are not described in detail herein, it is to be noted that, when the motor works, the motor stator 11 is in a relatively stationary state, and the motor rotor 12 is in a rotating state; the sand grinding mechanism 2 and the sand grinding component are the prior art, and are mainly used for crushing and shaping materials, the sand grinding mechanism 2 also comprises a bearing seat which is used for fixing and supporting a bearing in the sand grinding mechanism 2, and meanwhile, the shell 21 is also fixed on a base of the sand grinder so as to stabilize the working state of the sand grinder; in order to ensure that the motor rotor 12 can rotate freely within the motor stator 11, there is a certain air gap between the outer surface of the motor rotor 12 and the inner surface of the motor stator 11; the scheme specifically adopted in the embodiment is that the main shaft 22 in the sanding mechanism 2 is directly penetrated into a motor and fixedly connected to the middle part of the motor rotor 12, namely, the bearingless permanent magnet synchronous motor is adopted to drive the main shaft 22 to move, so that two-stage or multi-stage transmission can be reduced during operation, the energy transmission efficiency of the main shaft 22 is ensured, in addition, the following effects can be obtained, firstly, the problem that the main shaft 22 is not concentric with the motor during the working process can be avoided, secondly, the utilization of the space of a factory site is facilitated, thirdly, the installation difficulty of the direct driving of the motor is reduced, meanwhile, the failure rate of equipment caused by the loss of a motor bearing is reduced, fourthly, the use of the motor bearing is avoided, resources are saved while the structure is simplified, and the production cost is reduced.

Energy efficiency experimental data comparison chart of different motors

In a further embodiment of the invention, the motor rotor 12 is mounted on the main shaft 22 by means of a distance sleeve 13, the distance sleeve 13 being used to adjust the distance between the rotors and to transmit axial forces.

In the prior art, in order to ensure that the motor rotor 12 can freely rotate in the motor stator 11, a certain air gap exists between the outer surface of the motor rotor 12 and the inner surface of the motor stator 11, so that during the movement of the motor rotor 12, the spindle 22 is inevitably subjected to change of the spindle inclination angle (the spindle 22 takes a bearing in the sanding mechanism 2 as a rotation center to generate offset) or radial runout (the spindle 22 and the motor rotor 12 integrally move radially), especially when under large torque, no matter whether the spindle inclination angle is slightly changed or the radial runout, the efficiency of the spindle 22 for transferring energy is reduced, abrasion occurs during the movement, and the motor is sintered when the deviation is serious.

In still another embodiment of the present invention, the shaft inclination adjusting mechanism 3 includes an inclinometer 31 and a PLC controller, where the inclinometer 31 is in the prior art, and is not described in detail herein, the PLC controller is a programmable PLC controller, and is also well known in the art, the inclinometer 31 is electrically connected to the PLC controller, the inclinometer 31 is used for measuring the shaft inclination variation (the shaft inclination variation includes the direction variation and the angle variation) and the radial runout of the spindle 22, the automatic detection of the shaft inclination variation and the radial runout is in the prior art, and it is easy for those skilled in the art to think that various detection sensors including the inclinometer 31 are used, and not described in detail herein, then the shaft inclination variation and the radial runout are input into the PLC controller, and the PLC controller corrects the shaft inclination variation or the radial runout of the spindle 22 after analyzing and processing the data, and a set of displacement control system is preset in the PLC controller to assist in adjusting the shaft inclination variation or the radial runout of the spindle 22.

In still another embodiment of the present invention, the shaft inclination adjusting mechanism 3 includes a mounting frame 32, the mounting frame 32 is sleeved on the outer side of the spindle 22, a plurality of rotation shafts 33 are rotatably mounted on the mounting frame 32, the specific number of the rotation shafts 33 may be four, eight and sixteen, preferably four, the plurality of rotation shafts 33 are circumferentially arrayed around the spindle 22, so that the spindle 22 can be adjusted in multiple dimensions, a threaded section 34 is disposed on one side of the rotation shaft 33 near the spindle 22, the extending direction of the rotation shaft 33 is consistent with the extending direction of a certain diameter of the spindle 22, a moving block 35 is screwed on the threaded section 34, a limiting frame 36 is fixed on the inner side of the mounting frame 32, the limiting frame 36 extends toward the central position of the spindle 22, the limiting frame 36 is attached to both sides of the moving block 35 and guides the moving direction of the moving block 35, that is, that the moving block 35 can only move toward the central position of the spindle 22, a bracket 37 is fixed on the moving block 35, an adjusting rod 38 is mounted on the bracket 37, and the adjusting rod 38 can extend toward the spindle 22 only toward the radial direction near the spindle 22 when the central position of the adjusting rod 38 is close to the spindle 22; when the inclinometer 31 detects that the inclination angle of the spindle changes, the inclination angle change amount of the spindle is input into the PLC controller, after being analyzed by the PLC controller, one or two rotating shafts 33 are controlled to work, when the inclination angle change direction of the spindle 22 is exactly parallel to the direction of one rotating shaft 33, the rotating shafts 33 in the direction are only controlled to rotate, and the moving block 35 is driven to slightly move in the radial direction of the spindle 22, and in most cases, the inclination angle change direction of the spindle 22 is not parallel to the direction of one rotating shaft 33, therefore, two rotating shafts 33 are required to be controlled to work simultaneously to adjust the inclination angle of the spindle, the rotation number of the two rotating shafts 33 is required to be respectively adjusted, when the rotating shafts 33 rotate, the screw thread section 34 rotates along with the screw thread section and drives the moving block 35 to move, and because the moving block 35 is limited by the limiting frame 36, the moving block 35 can only move towards the direction close to the central position of the main shaft 22, so as to drive the bracket 37 and the adjusting rod 38 to move towards the direction close to the central position of the main shaft 22, the surface of the main shaft 22 is contacted with the adjusting rod 38, so that the main shaft 22 is pushed to return to the central position, the rotation number of the rotating shaft 33 is in direct proportion to the moving distance of the adjusting rod 38, the two also accord with a functional relation, and the moving distance of the adjusting rod 38 can be obtained through calculation, so that when two different adjusting rods 38 both push the main shaft 22 slightly, the multi-dimensional adjustment of the main shaft 22 can be completed; the use of the threaded section 34 to control the movement of the moving block 35 and the adjustment rod 38 is to facilitate minor adjustments.

In still another embodiment of the present invention, a drag reducing ball 381 is movably mounted at one end of the adjusting rod 38 near the main shaft 22, when the adjusting rod 38 pushes the main shaft 22 to perform micro motion, the drag reducing ball 381 contacts with the outer sidewall of the main shaft 22, so that when the main shaft 22 returns to its central position and works normally, the contact area between the drag reducing ball 381 and the main shaft 22 is reduced, the main shaft 22 is prevented from contacting with the adjusting rod 38 and wearing when rotating, and the radius of the drag reducing ball 381 is fixed, so as to facilitate calculation of the distance to be moved by the adjusting rod 38.

In yet another embodiment of the present invention, a gap is provided between the adjusting rod 38 and the outer side wall of the spindle 22, and the gap is a fixed gap, so as to calculate the distance that the adjusting rod 38 needs to move.

In still another embodiment of the present invention, a driven gear 331 is fixedly disposed at one end of the rotating shaft 33 near the spindle 22, a servo motor 332 is fixedly connected to the mounting frame 32, a driving gear 333 is fixed at an output end of the servo motor 332, and the driving gear 333 and the driven gear 331 are meshed with each other; the diameter of the driven gear 331 is smaller than that of the driving gear 333; the PLC controller is electrically connected to each of the servo motors 332, and can control the output shaft of each servo motor 332 to rotate for different turns, so as to control each rotation shaft 33 to rotate for different turns, so that the movement distance of each adjusting rod 38 can be independently adjusted, thereby realizing multi-dimensional adjustment of the spindle 22.

In the above embodiment, only the adjustment method of the shaft inclination angle variation is provided, no adjustment method of the radial runout is provided, and when the radial runout occurs, the shaft inclination angle variation often occurs simultaneously, further adjustment of the radial runout is needed, for this purpose, the embodiment provides a radial adjustment mechanism 4, which can radially adjust the entire mounting frame 32, the radial adjustment mechanism 4 includes a mold returning frame 41, the mold returning frame 41 is located at the outer side of the mounting frame 32, the mounting frame 32 and the mold returning frame 41 are located at the same horizontal plane, at least two elastic telescopic rods 42 are connected between the mounting frame 32 and the mold returning frame 41, a screw 43 is screwed on the mounting frame 32, the screw 43 and the elastic telescopic rods 42 are in the same plane and are parallel to each other, one end of the screw 43 away from the mounting frame 32 rotates to penetrate the mold returning frame 41, the precision of the mold returning frame 41 can be controlled by the screw 43, a stepper motor 44 is fixedly installed on the mold returning frame 41, the mold returning frame 44 is also electrically connected with a PLC controller, the output shaft 44 is electrically connected with the stepper motor 32, when the specific shaft 32 is in the radial runout is not connected with the spindle motor 32, and the spindle motor is driven by the spindle motor 32 to rotate in the radial runout direction, and the spindle motor is prevented from being driven by the spindle motor 32, and the spindle motor is driven to rotate in the radial runout direction of the spindle 32, and then the spindle motor is driven by the spindle motor 32 to rotate the spindle motor 32 when the spindle motor is driven by the spindle motor 32 to rotate the spindle motor 32, and is driven by the spindle motor 32; when radial runout of the main shaft 22 and shaft inclination change occur simultaneously, the shaft inclination of the main shaft 22 is adjusted by the PLC controller, then each adjusting rod 38 is just attached to the main shaft 22, and then the PLC controller starts the stepping motor 44, so that the stepping motor 44 drives the screw 43 to rotate and drives the installation frame 32 to integrally move, and the main shaft 22 returns; obviously, the invention is provided with a plurality of drives, so that the main shaft 22 can be adjusted in a multi-direction and multi-dimension mode, and a linkage mechanism can not be adopted to share the same drive; through the technical scheme, the radial adjusting mechanism 4 and the shaft inclination angle adjusting mechanism 3 work simultaneously, the position of the main shaft 22 is finely adjusted, the normal work of the main shaft 22 is ensured, and the distance movement involved in the working process can be completed through calculation and part design.

Further, in order to further stabilize the movement of the spindle 22, a further design may be performed on the adjusting rod 38, an end of the adjusting rod 38 facing the spindle 22 may be in a fan shape, an end of the adjusting rod 38 close to the spindle 22 may be rotatably provided with a plurality of drag reduction shafts 382, the axes of the drag reduction shafts 382 are parallel to the axes of the spindle 22, the drag reduction shafts 382 are in a cylindrical shape, when the drag reduction shafts 382 contact the spindle 22, the drag reduction shafts 382 are in linear contact, and compared with the drag reduction balls 381, when the spindle 22 moves, the drag reduction shafts 382 can provide more stable extrusion driving for the spindle 22 while ensuring less abrasion; the pressure self-adaptive assembly 5 is further installed on the adjusting rod 38, the pressure self-adaptive assembly 5 comprises working cavities which are formed on the adjusting rod 38, sliding blocks 51 are installed in the working cavities in a sliding mode, the sliding blocks 51 and the working cavities are in a sealing state, limiting springs 52 are connected between the sliding blocks 51 and the working cavities, a drag reduction column 53 is movably installed at one end, far away from the limiting springs 52, of each sliding block 51, the working cavities are communicated with each other through a communication cavity 54, oil liquid such as hydraulic oil is filled in the working cavities and the communication cavities 54, the elastic coefficient of at least one limiting spring 52 is different from the elastic coefficient of the other limiting springs 52, the relative distance between at least one sliding block 51 and the working cavity is different from the relative distance between the other sliding blocks 51 and the working cavity, the initial position of at least one sliding block 51 is closer to the working cavity, the distance between the at least one drag reduction column 53 and the outer side wall of the main shaft 22 is different from the distance between the corresponding Yu Jianzu column 53 and the outer side wall of the main shaft 22, and the initial position of the sliding block is closer to the first working cavity 51, and the other sliding blocks are closer to the working cavity is the working cavity; when the inclination angle of the shaft is adjusted, one or two adjusting rods 38 move towards the direction close to the main shaft 22, at the moment, part of the drag reduction columns 53 are contacted with the main shaft 22 and push the main shaft 22 to move, meanwhile, the drag reduction columns 53 push the sliding blocks 51 to slide into the working cavities and squeeze the limiting springs 52, at the moment, the sliding blocks 51 push the oil to move, the oil flows into the first working cavities from the second working cavities, the oil in the first working cavities is increased and squeezes the sliding blocks 51 at the position, feedback of detection data is given to the sensor, if the inclination angle of the main shaft 22 is not adjusted timely, the main shaft 22 is continuously squeezed through the adjusting rods 38, so that the sliding blocks 51 in the first working cavities are continuously moved and more drag reduction columns 53 are contacted with the outer wall of the main shaft 22, so that the number of the drag reduction columns 53 contacted with the outer wall of the main shaft 22 can be increased, the contact points of pressure can be dispersed, the pressure is prevented from being too concentrated, the number of columns 53 contacted with the outer wall of the main shaft 22 is increased, and the squeezing pressure of each column 53 is passively balanced to drag reduction, and the movement of the main shaft 22 can be more stable.

Still further, in order to adjust the axial inclination angle and the axial shifting amount of the spindle 22 more quickly and conveniently, a further scheme is provided in this embodiment, the spindle 22 is designed to have an annular protrusion 221, the protrusion 221 is composed of a first annular portion 222 and a second annular portion 223 with a truncated cone-shaped cross section, and the order of the protrusion 221 is as follows: the first ring portion 222-the second ring portion 223-the first ring portion 222, the end of the adjusting rod 38 near the spindle 22 is further fixed with an inclined portion 224 which is arranged oppositely, the inclined surface of the inclined portion 224 is parallel to the inclined surface on the first ring portion 222, and the roller 225 is rotatably installed on the inclined portion 224, so when the axial inclination angle and the radial runout of the spindle 22 need to be adjusted, the adjusting rod 38 is pushed in the direction near the spindle 22, the roller 225 is firstly contacted with the first ring portion 222 and pushes the first ring portion 222 to move, and because both are arranged obliquely, the axial inclination angle and the axial runout can be directly and simultaneously adjusted.

It is obvious that the roller 225 can still be adapted to the above-mentioned construction of the sliding block 51, the working chamber and the communicating chamber 54, in a further embodiment, the opening of the working chamber is provided with an inwardly extending annular limiting portion 227, i.e. a construction with a small belly large opening is formed, the annular limiting portion 227 is used for limiting the sliding block 51 to prevent the sliding block 51 from being separated from the working chamber, meanwhile, the sliding block 51 is slidingly connected in the working chamber in a reciprocating manner through the movable sealing rings 226, i.e. one or more movable sealing rings 226 are sleeved on the outer wall of the sliding block 51 and pressed on the inner wall of the working chamber, so that the sliding block 51 is provided with passive adaptation to the first circular ring portion 222 based on the deformation amplitude of the movable sealing rings 226, in particular, in an ideal case, the roller 225 is arranged in parallel to the opposite portion of the first circular ring portion 222, and is in a linear fit when pressed, but in practice, as mentioned above, the shaft inclination makes the two are in point contact, which makes the roller 225 wear relatively serious, but when the size of the movable sealing rings 226 is set up to be a little, the roller 225 can still be in contact with the first circular ring 225 when the rolling ring 225 is pressed to the first circular ring 225, thereby realizing the passive adaptation to the rolling ring 225. The swing herein refers to a swing performed with the axis of the roller 225 being the origin of the geometric center of the roller 225. Essentially, the deformation of the movable sealing ring 226 is relied on, and the roller 225 compresses one side of the movable sealing ring 226 and elastically expands opposite to the other side, in this embodiment, the inclination angle of the shaft is very small, and may be only 0.01-0.2, so that the movable sealing ring 226 is allowed to deform to compensate and still has a movable sealing effect after deformation.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.

Claims

1. The utility model provides an energy-efficient sand mill device, includes motor and sand grinding mechanism, sand grinding mechanism includes casing, main shaft and sets up in epaxial sand grinding subassembly, its characterized in that, the motor includes motor stator and the motor rotor of phase separation, motor stator rigid coupling in on the casing, the motor rotor rigid coupling in on the main shaft, motor stator overcoat in motor rotor and have the clearance between the two.

2. The energy efficient sander apparatus according to claim 1, wherein the motor rotor is mounted to the spindle by a spacer sleeve.

3. The energy efficient sander apparatus according to claim 1, further comprising an axle tilt adjustment mechanism for adjusting the axle tilt of the spindle.

4. The energy efficient sand mill device according to claim 1, wherein the shaft inclination angle adjusting mechanism comprises an inclinometer and a PLC controller, the inclinometer is electrically connected with the PLC controller, and the inclinometer is used for measuring the inclination angle variation of the main shaft and inputting the inclination angle variation into the PLC controller.

5. The efficient and energy-saving sand mill device according to claim 4, wherein the shaft inclination angle adjusting mechanism comprises a square frame, the square frame is sleeved on the outer side of the main shaft, at least four rotating shafts are rotatably mounted on the square frame, the rotating shafts are uniformly distributed circumferentially around the main shaft, a threaded section is arranged on one side, close to the main shaft, of each rotating shaft, the extending direction of each rotating shaft is consistent with the extending direction of the diameter of the main shaft, a movable block is connected to the threaded section through threads, a limiting frame is further fixed on the inner side of each Fang Xingkuang, the limiting frames are attached to two sides of the movable block and limit the moving direction of the movable block, a support is fixedly arranged on each movable block, and an adjusting rod is mounted on each support.

6. The energy efficient sand mill device according to claim 5, wherein the adjusting rod is movably provided with drag reducing balls at one end near the main shaft.

7. The energy efficient sander apparatus according to claim 5, wherein a gap is provided between the adjustment rod and the outer side wall of the spindle.

8. The efficient and energy-saving sander device according to claim 5, wherein the driven gear is fixedly arranged at one end of the rotating shaft, which is close to the main shaft, and the square frame is fixedly connected with a servo motor, and a driving gear is fixedly arranged at the output end of the servo motor, and the driving gear and the driven gear are meshed with each other.

9. The energy efficient sander apparatus according to claim 8, wherein the driven gear has a diameter less than the diameter of the drive gear.

10. The energy efficient sander apparatus according to claim 8, wherein the PLC controller is electrically connected to each of the servo motors.