CN214515906U - Vibration exciter capable of automatically adjusting eccentric block - Google Patents

Abstract

The utility model discloses an automatic adjust vibration exciter of eccentric block, the disk body has, the apparatus further comprises a rotating shaft, fixed eccentric block and activity eccentric block, the disk body is passed in the pivot rotation, fixed eccentric block and activity eccentric block are in the same face department of disk body altogether, and fixed eccentric block sets up with the activity eccentric block relatively, fixed eccentric block and pivot fixed coordination, the pivot is fixed with the fixed cooperation of disk body cover, outside the pivot was located to activity eccentric block movable sleeve, the disk body was equipped with the elastic component towards the one side of eccentric block, be equipped with on activity eccentric block and the disk body and supply the rotation guide structure that circumferential direction was made to the activity eccentric block round the pivot. Compared with the prior art, the position of the two eccentric blocks can be changed relatively, so that the eccentric centrifugal force can be controlled, the amplitude of the vibrating screen can be controlled, the application is flexible, the vibration amplitude cannot be too large when the vibrating screen is started and stopped, the whole equipment is stable, and meanwhile, the centrifugal force of the two eccentric blocks is relatively balanced when the vibrating screen is started, so that the starting power consumption is relatively low.

Description

Vibration exciter capable of automatically adjusting eccentric block

Technical Field

The utility model relates to a be used for artifical system sand field, in particular to use vibration exciter on shale shaker.

Background

As is well known, a vibrating screen is indispensable equipment in the field of artificial sand making, and can be used for screening raw materials with different particle sizes. The vibration of the vibrating screen mainly adopts the excitation force generated by the vibration exciter on the vibrating screen to vibrate the vibrating screen. The vibration exciter for the vibrating screen in the prior sand making equipment has the advantages that two eccentric blocks are fixedly sleeved outside a rotating shaft and positioned at two sides of a bottom plate, namely the bottom plate is positioned between the two eccentric blocks, and the positions of the eccentric blocks are fixed, so that the amplitude of the vibrating screen is also fixed and is not easy to adjust, and the sand making equipment is relatively inflexible to use; meanwhile, the fixed eccentric block can cause that the sand making equipment needs larger energy consumption when being started and shut down, and the vibration amplitude is larger (generally seven times to eight times of the normal working amplitude) in the startup and shutdown process, thereby seriously influencing the working stability of the equipment.

In view of the above, the present inventors have conducted extensive studies to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic adjust vibration exciter of eccentric block to it is fixed to solve among the prior art eccentric block and cause the amplitude fixed, uses the dumb, and the big problem of amplitude that reaches of switching on and shutting down energy consumption.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an automatic adjust vibration exciter of eccentric block, the disk body has, pivot and eccentric block, the pivot rotates and passes the disk body, above-mentioned eccentric block is provided with two, one of which is fixed eccentric block, another is the activity eccentric block, above-mentioned fixed eccentric block and activity eccentric block are in the coplanar department of disk body altogether, and fixed eccentric block sets up with activity eccentric block relatively, fixed eccentric block and pivot fixed coordination, the fixed cooperation of cover is fixed with above-mentioned disk body to the pivot, above-mentioned activity eccentric block movable sleeve is located outside the pivot, and be equipped with on the one side of above-mentioned disk body towards eccentric block and be connected with the activity eccentric block outside the activity eccentric block one side and produce the elastic component of restoring force along with the rotation of activity eccentric block, be equipped with on above-mentioned disk body and supply activity eccentric block to make the rotation guide structure of circumferential direction around the pivot.

The fixed eccentric block and the movable eccentric block are both fan-shaped structures with big ends and small ends, and the small end part of the fixed eccentric block is fixedly connected with the rotating shaft through a bolt.

The outer side wall of the rotating shaft is concavely provided with an insertion groove for the small end part of the fixed eccentric block to extend into, the groove wall of the insertion groove is concavely provided with a positioning recess extending along the axial direction of the rotating shaft, the small end part of the fixed eccentric block is provided with a through hole opposite to the positioning recess, one end of the bolt is limited outside the fixed eccentric block, and the other end part of the bolt penetrates through the through hole to be fixed in the positioning recess.

The one side of disk body that uses two eccentric blocks to locate is the upper surface, and above-mentioned fixed eccentric block is relative setting from beginning to end with above-mentioned movable eccentric block, and the upper surface outside position of disk body has set firmly the reference column of erectting outside the left side of movable eccentric block, and above-mentioned elastic component is the spring, and the first end tip of above-mentioned spring is fixed on the reference column, and the second end tip of above-mentioned spring is fixed on the left side wall of above-mentioned movable eccentric block.

The upper surface of above-mentioned disk body sets up the arc wall along the department that extends to the right side of fixed eccentric block along the circumferential direction of disk body corresponding to the left side edge department of activity eccentric block, and above-mentioned activity eccentric block has set firmly on the one side towards the arc wall and has stretched into in the arc wall and along the gliding guide slide bar of arc wall, above-mentioned arc wall and above-mentioned guide slide bar constitute rotation guide structure.

After the technical scheme is adopted, the utility model discloses an automatic adjust vibration exciter of eccentric block, under the initial state, because of two eccentric block symmetric arrangement, the power is balanced relatively when starting the rotation, the start-up process only need overcome the power of pivot moment of torsion can, greatly reduced power consumption, later along with the pivot rotational speed promotes, because of activity eccentric block and pivot activity suit, fixed eccentric block is fixed with the pivot, then two eccentric block position relative change, produce eccentric centrifugal force under the drive of pivot, thereby drive the vibration of whole shale shaker, and simultaneously, when the motor passes through the converter control pivot rotational speed, can control the relative position of two eccentric blocks, the regulation of two eccentric block relative position can control eccentric centrifugal force, thereby reach the size of control shale shaker amplitude; in addition, in the starting process, in the process that the rotating speed is increased from 0 to the maximum rotating speed, the two eccentric blocks are also changed from the symmetrical arrangement (the eccentric force is 0) to the overlapping position (the eccentric force is maximum), and the amplitude of the vibrating screen is also changed from 0 to the working amplitude; in the shutdown process, the rotating speed is reduced to 0 from the maximum rotating speed, the two eccentric blocks are also symmetrically arranged (the eccentric force is 0) from the overlapping position (the eccentric force is maximum), and the amplitude of the vibrating screen is also from the working amplitude to 0, so that the vibration amplitude is not too large during startup and shutdown, and the whole equipment is stable.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of another state of the present invention.

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings.

The utility model relates to a vibration exciter capable of automatically adjusting eccentric blocks, as shown in figures 1 and 2, the vibration exciter is provided with a disc body 1, a rotating shaft 2 and eccentric blocks, the rotating shaft 2 rotates and passes through the disc body 1, the eccentric blocks are provided with two eccentric blocks, one eccentric block is a fixed eccentric block 3, the other eccentric block is a movable eccentric block 4, the fixed eccentric block 3 and the movable eccentric block 4 are positioned at the same surface of the disc body 1, the two surfaces of the disc body 1 are the upper surface and the lower bottom surface, the fixed eccentric block 3 and the movable eccentric block 4 are positioned at the upper surface of the disc body 1, the fixed eccentric block 3 and the movable eccentric block 4 are arranged oppositely, in particular, the fixed eccentric block 3 and the movable eccentric block 4 are arranged oppositely in the front and back direction, the fixed eccentric block 3 and the movable eccentric block 4 are both in a fan-shaped structure, the fan-shaped structure takes one end with a small diameter as a small end, the one end with a large diameter as a big end, the fixed eccentric block 3 and the rotating shaft 2 are fixedly matched, the rotating shaft 2 is fixedly matched with the fixed sleeve of the disc body 1, in particular, the small end part of the fixed eccentric block 3 is fixedly connected with the rotating shaft 2 through a bolt, namely, the outer side wall of the rotating shaft 2 is concavely provided with an insertion groove (not shown in the figure) for the small end part of the fixed eccentric block 3 to extend into, and the lower groove wall of the insertion groove is concavely provided with a positioning recess (not shown in the figure) extending along the axial direction of the rotating shaft 2, the small end part of the fixed eccentric block 3 is provided with a through hole opposite to the positioning recess, one end of the bolt is limited outside the fixed eccentric block, the other end part of the bolt passes through the through hole to be fixed in the positioning recess, the fixed eccentric block is fixedly matched with the rotating shaft by utilizing the matching of the bolt and the positioning recess, and the fixed eccentric block is close to and matched with the disc body 1, and the rotating shaft is fixed with the disc body because the rotating shaft is fixed with the fixed eccentric block, namely the fixed eccentric block is fixed with the disc body, and the fixed eccentric block and the rotating shaft 2 rotate together. This novel fixed cooperation mode of well pivot 2 and fixed eccentric block 3 also can adopt other modes, only need fixed cooperation can.

The movable eccentric block 4 is movably sleeved outside the rotating shaft 2, namely, a through hole for the rotating shaft 2 to movably pass through is formed in the small end part of the movable eccentric block 4, the movable eccentric block 4 is in relative rotating fit with the rotating shaft 2, the movable eccentric block 4 is arranged in a suspended mode, the movable eccentric block 4 is positioned above the fixed eccentric block 3, an elastic part which is positioned outside one side of the movable eccentric block and connected with the movable eccentric block 4 and generates restoring force along with the rotation of the movable eccentric block is arranged on the upper surface of the disc body 1, and a rotating guide structure for the movable eccentric block to circumferentially rotate around the rotating shaft is arranged on the movable eccentric block 4 and the disc body 1; specifically, a vertical positioning column 5 is fixedly arranged outside the left side of the movable eccentric block 4 at the outer side of the upper surface of the disc body 1, the elastic part is a spring 6, the first end part of the spring 6 is fixed on the positioning column 5, and the second end part of the spring 6 is fixed on the left side wall of the movable eccentric block 4; therefore, when the rotating shaft 2 rotates, the spring 6 is stretched due to the corresponding rotation of the disc body 1, and the fixed eccentric block 4 is fixed with the rotating shaft 2, so that the positions of the movable eccentric block 4 and the fixed eccentric block 3 are changed relatively.

The upper surface of disk body 1 sets up the arc wall 11 along the department that the circumference direction that extends to fixed eccentric block 3 along the right side of disk body along the department corresponding to the left side of activity eccentric block 4, and this arc wall 11 also can be for running through disk body 1 about both sides personally submit an arc through-hole, activity eccentric block 4 has set firmly on the one side of arc wall (bottom surface promptly) and has stretched into in the arc wall 11 and follow the gliding guide slide bar of arc wall (not drawn in the picture), the arc wall constitutes with the guide slide bar rotation guide structure, when disk body 1 rotates promptly, activity eccentric block 4 can not slide along with easy, get up the guide effect to the relative rotation of disk body and activity eccentric block.

The utility model discloses an automatic adjust vibration exciter of eccentric block, under the initial state, because of fixed eccentric block 3 and the symmetrical arrangement around the activity eccentric block 4, the power is balanced relatively when starting to rotate, the start-up process only need overcome the power of pivot 2 moment of torsion can, greatly reduced power consumption, later along with the promotion of pivot 2 rotational speed, because of activity eccentric block and pivot activity suit, fixed eccentric block is fixed with the pivot, then two eccentric block positions change relatively, produce eccentric centrifugal force under the drive of pivot, thereby drive the vibration of whole shale shaker, and simultaneously, when the motor passes through converter control pivot rotational speed, can control the relative position of two eccentric blocks, the regulation of two eccentric block relative positions can control eccentric centrifugal force, thereby reach the size of control shale shaker amplitude; in addition, in the starting process, in the process that the rotating speed is 0-845r/min, if 845r/min is the maximum rotating speed of the rotating shaft, the two eccentric blocks are also symmetrically arranged from front to back (the eccentric force is 0) to change to an overlapping position (the eccentric force is maximum), and the amplitude of the vibrating screen is also from 0 to the working amplitude; in the shutdown process, in the process that the rotating speed is 845-0r/min, the two eccentric blocks are also changed from the overlapping position (the eccentric force is the maximum) to the symmetrical arrangement (the eccentric force is 0), and the amplitude of the vibrating screen is also changed from the working amplitude to 0, so that the overlarge vibration amplitude cannot be caused in the startup and shutdown process, and the whole equipment is stable; in addition, the vibration of the vibrating screen is more stable by utilizing the rotating guide structure, and the deflection cannot occur.

The product form of the present invention is not limited to the drawings and embodiments of the present application, and any person can properly change or modify the product form of the present invention without departing from the scope of the present invention.

Claims (5)

1. The utility model provides an automatic adjust vibration exciter of eccentric block, has disk body, pivot and eccentric block, and the disk body is passed in the pivot rotation, its characterized in that: the eccentric block is provided with two blocks, one of the eccentric block is a fixed eccentric block, the other eccentric block is a movable eccentric block, the fixed eccentric block and the movable eccentric block are positioned at the same surface of the disc body, the fixed eccentric block and the movable eccentric block are arranged oppositely, the fixed eccentric block is fixedly matched with the rotating shaft, the rotating shaft is fixedly matched with the fixed sleeve of the disc body, the movable eccentric block is movably sleeved outside the rotating shaft, an elastic part which is positioned outside one side of the movable eccentric block and is connected with the movable eccentric block and generates restoring force along with the rotation of the movable eccentric block is arranged on one surface of the disc body facing the eccentric block, and a rotation guide structure for enabling the movable eccentric block to rotate circumferentially around the rotating shaft is arranged on the movable eccentric block and the disc body.

2. The exciter for automatically adjusting the eccentric block according to claim 1, wherein: the fixed eccentric block and the movable eccentric block are both fan-shaped structures with big ends and small ends, and the small end part of the fixed eccentric block is fixedly connected with the rotating shaft through a bolt.

3. The exciter for automatically adjusting the eccentric block according to claim 2, wherein: the outer side wall of the rotating shaft is concavely provided with an insertion groove for the small end part of the fixed eccentric block to extend into, the groove wall of the insertion groove is concavely provided with a positioning recess extending along the axial direction of the rotating shaft, the small end part of the fixed eccentric block is provided with a through hole opposite to the positioning recess, one end of the bolt is limited outside the fixed eccentric block, and the other end part of the bolt penetrates through the through hole to be fixed in the positioning recess.

4. The exciter for automatically adjusting the eccentric block according to claim 1, wherein: the one side of disk body that uses two eccentric blocks to locate is the upper surface, and above-mentioned fixed eccentric block is relative setting from beginning to end with above-mentioned movable eccentric block, and the upper surface outside position of disk body has set firmly the reference column of erectting outside the left side of movable eccentric block, and above-mentioned elastic component is the spring, and the first end tip of above-mentioned spring is fixed on the reference column, and the second end tip of above-mentioned spring is fixed on the left side wall of above-mentioned movable eccentric block.

5. The exciter for automatically adjusting the eccentric block according to claim 4, wherein: the upper surface of above-mentioned disk body sets up the arc wall along the department that extends to the right side of fixed eccentric block along the circumferential direction of disk body corresponding to the left side edge department of activity eccentric block, and above-mentioned activity eccentric block has set firmly on the one side towards the arc wall and has stretched into in the arc wall and along the gliding guide slide bar of arc wall, above-mentioned arc wall and above-mentioned guide slide bar constitute rotation guide structure.

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