CN218167671U - Vibration exciter assembly and screening device provided with same - Google Patents

Abstract

The utility model discloses a vibration exciter assembly and install screening plant of this vibration exciter assembly, the vibration exciter assembly includes: two supporting plates which are correspondingly arranged; the two through shafts are arranged on the two supporting plates and comprise a hollow shaft and a vibration shaft arranged in the hollow shaft, the hollow shaft is fixed between the two supporting plates, and the hollow shaft is rotatably connected with the vibration shaft; the counterweight eccentric devices are arranged at two ends of the two vibrating shafts and used for enhancing the vibration of the vibrating shafts, and the counterweight eccentric devices are positioned on the opposite outer sides of the two supporting plates; the during operation orders about two vibration axle turns to opposite and the frequency equals, counter weight eccentric device follows the vibration axle rotates, two vibration axle both ends the centrifugal force that counter weight eccentric device produced is followed the vibration direction stack of vibration axle and reverse centrifugation offset to strengthen the vibration of two vibration axles.

Description

Vibration exciter assembly and screening device provided with same

Technical Field

The embodiment of the invention relates to the technical field of screening machinery, in particular to a vibration exciter assembly and a screening device provided with the same.

Background

Vibration exciters (vibration exciters) are devices attached to some machines and equipment to generate exciting force, and are important parts using mechanical vibration. The vibration exciter can enable a excited object to obtain a certain form and magnitude of vibration quantity, so that the object is subjected to vibration and strength tests, or a vibration testing instrument and a sensor are calibrated; the vibration exciter can also be used as an exciting part to form a vibrating machine for realizing the work of conveying, screening, compacting and molding materials or objects, tamping soil gravels and the like; more specifically, the vibration exciter is applied to the dewatering screen and the linear vibration screen so that the dewatering screen and the linear vibration screen perform reciprocating linear motion, thereby screening the materials.

The conventional patent with publication number CN106799348A discloses a linear vibrating screen, which comprises a fixed seat and a fixed shaft, wherein the base is a whole body formed by fixedly connecting the middle parts of front and rear cuboids through two cylindrical shafts, the fixed shaft is fixed on the base, four parts of the front and rear cuboids are respectively arranged on the base, the linear vibrating screen further comprises a screen box, a vibration exciter, a base, a spring and screen holes, the fixed seat is arranged on the front side surface and the rear side surface of the screen box, a through hole is processed on the bottom surface of the fixed seat, the fixed seat is sleeved outside the fixed shaft through the through hole, the bottom surface of the screen box is of a net structure with a large number of screen holes, and the vibration exciter is fixed on the upper right side of the screen box. As can be seen from fig. 1 and 2 of patent publication No. CN106799348A, the vibration exciter is located at the upper right of the screen box, and is installed on the cross beam of the screen box, because the vibration exciter can generate vibration, on one hand, the load bearing and vibration bearing capacity of the cross beam of the vibration exciter are higher, so that the load bearing and vibration bearing capacity of the screen box are higher, so as to keep the vibrating screen working normally; on the other hand, the width of the screen box is limited, otherwise sufficient vibration cannot be generated; therefore, the assembly mode that the vibration exciter is arranged on the cross beam of the screen box is only suitable for small-sized vibrating screens and cannot be applied to large-sized vibrating screens.

Disclosure of Invention

The invention aims to provide a vibration exciter assembly and a screening device provided with the vibration exciter assembly, which have the advantage of stable operation and are particularly suitable for large-scale vibrating screens.

In order to solve the above technical problem, the present invention provides a vibration exciter assembly, including:

two supporting plates which are correspondingly arranged;

the two through shafts are arranged on the two supporting plates and comprise a hollow shaft and a vibration shaft arranged in the hollow shaft, the hollow shaft is fixed between the two supporting plates, and the hollow shaft is rotatably connected with the vibration shaft; and

the counterweight eccentric devices are arranged at two ends of the two vibrating shafts and used for enhancing the vibration of the vibrating shafts, and the counterweight eccentric devices are positioned at the opposite outer sides of the two supporting plates;

when the vibration shaft driving device works, the two vibration shafts are driven to rotate oppositely and have equal frequency, and the counterweight eccentric devices follow the vibration shafts to rotate, so that the counterweight eccentric devices at the two ends of one vibration shaft and the counterweight eccentric devices at the two ends of the other vibration shaft rotate oppositely and have equal frequency.

The invention is further configured to: the axis of the hollow shaft and the axis of the vibration shaft are positioned on the same straight line.

The invention is further configured to: the two ends of the through shaft and the two supporting plates are respectively provided with a sealing seat, the sealing seats penetrate through the supporting plates and are fixed with the supporting plates, the sealing seats are fixed with the hollow shaft, and the sealing seats are rotatably sleeved on the vibration shaft.

The invention is further configured to: the seal receptacle is including the first ring flange, bearing frame and the second ring flange that set gradually, first ring flange with the hollow shaft is fixed, the bearing frame runs through the backup pad and with the backup pad is fixed, the rotatable cover of second ring flange is established on the vibration axle.

The invention is further configured to: the counterweight eccentric device includes a pendulum located outside the hollow shaft, the pendulum being mounted on the vibration shaft.

The invention is further configured to: the counterweight eccentric device further comprises a locking piece, the pendulum is provided with two mounting plates, the two mounting plates penetrate through the vibration shaft and are connected with the locking piece, so that the pendulum is fixedly mounted on the vibration shaft.

The invention is further configured to: the pendulum bob is arranged in a T shape, and balancing weights are arranged on two sides of the pendulum bob to increase the weight of the pendulum bob.

The invention is further configured to: the length of the hollow shaft is smaller than that of the vibration shaft.

The invention is further configured to: the axes of the two through shafts are positioned on the same horizontal plane.

In order to solve the same technical problem, the invention further provides a screening device, the vibration exciter assembly is mounted on the screening device, the screening device comprises two groups of driving devices, the two groups of driving devices are located on the opposite outer sides of the two supporting plates, and the two groups of driving devices are respectively connected with the two vibrating shafts and used for driving the two vibrating shafts to rotate in opposite directions and have the same frequency.

In conclusion, the beneficial effects of the invention are as follows:

compared with the prior art, the vibration exciter assembly comprises the supporting plates, the two through shafts arranged on the two supporting plates and the counterweight eccentric devices arranged at the two ends of the two through shafts, wherein the two through shafts comprise the hollow shaft and the vibrating shaft arranged in the hollow shaft; when the vibration exciter is used, the two vibration shafts are driven to rotate oppositely and have equal frequency, and the counterweight eccentric devices arranged at the two ends of the two vibration shafts enhance the vibration of the two vibration shafts so as to improve the vibration performance of the vibration exciter and meet the requirement of large-scale vibration equipment; the vibration of vibration exciter is produced by vibration axle and the counter weight eccentric device that sets up at vibration axle both ends, and when the vibration exciter was installed on the shale shaker, counter weight eccentric device was located the both sides of shale shaker, has reduced the requirement of shale shaker to the sieve case, on the one hand, is applicable to large-scale shale shaker, and on the other hand, the vibration of vibration exciter on the shale shaker is more stable to optimize the working property of shale shaker, thereby promote the work efficiency of shale shaker.

Moreover, two through shafts are located on the same horizontal plane, vibration frequencies generated by the vibration shafts in the two through shafts are equal, and therefore vibration performance of the vibrating screen is optimized, and working efficiency of the vibrating screen is improved.

Drawings

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

FIG. 1 is a schematic view of a vibration exciter assembly according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of an exciter assembly according to an embodiment of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a schematic structural view of a support plate and a bearing housing in an embodiment of the invention;

FIG. 5 is a schematic view of a support plate and bearing housing in an embodiment of the invention;

FIG. 6 is a cross-sectional view at E-E of FIG. 5;

fig. 7 is a schematic structural view of a vibrating screen in an embodiment of the present invention.

Wherein, 1, a support plate; 2. passing through the shaft; 21. a hollow shaft; 22. a vibration shaft; 3. a counterweight eccentric device; 31. A pendulum bob; 311. a counterweight block; 312. mounting a plate; 313. key positions; 32. a locking member; 4. a sealing seat; 41. A first flange plate; 42. a bearing seat; 43. a second flange plate; 5. a drive device; 6. an end cap; 7. an elastic connection cover; 8. a screen box; 9. and (6) fully welding the parts.

Detailed Description

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.

Referring to fig. 1 to 7, a vibration exciter assembly and a vibrating screen equipped with the vibration exciter assembly are disclosed in the embodiments of the present invention, wherein the vibration exciter assembly includes two corresponding supporting plates 1, two through shafts 2 mounted on the two supporting plates 1, and a counterweight eccentric device 3 disposed at two ends of the two through shafts 2. The two through shafts 2 respectively comprise a hollow shaft 21 and a vibration shaft 22 arranged in the hollow shaft 21, a gap is formed between the hollow shaft 21 and the vibration shaft 22, the hollow shaft 21 is fixed between the two support plates 1, and the hollow shaft 21 is rotatably connected with the vibration shaft 22; the number of the counterweight eccentric devices 3 is four, the four counterweight eccentric devices 3 are respectively arranged at two ends of the vibration shaft 22, namely, two counterweight eccentric devices 3 are respectively arranged at two ends of each vibration shaft 22, and the counterweight eccentric devices 3 are positioned at the opposite outer sides of the two supporting plates 1. When the vibration exciter is used, the two vibration shafts 22 are driven to rotate in opposite directions and have equal frequency, and the counterweight eccentric devices 3 rotate along with the vibration shafts 22, so that the counterweight eccentric devices 3 at two ends of one rotating shaft and the counterweight eccentric devices 3 at two ends of the other vibration shaft 22 rotate in opposite directions and have equal frequency; because the opposite and frequency of turning to of two vibration axles 22 equals, the centrifugal force that the counter weight eccentric device 3 at two vibration axles 22 both ends produced superposes along vibration axis 22's vibration direction and reverse centrifugation offsets, with the vibration of two vibration axles 22 of reinforcing, play the effect of optimizing vibration exciter vibration performance, make the vibration direction of two vibration axles 22 fixed, thereby two vibration axles 22 form the reciprocating vibration that makes a round trip of single direction, it is more stable to be favorable to the vibration of vibration exciter, thereby the vibration exciter is applicable to large-scale equipment, such as shale shaker and dewatering screen.

In some embodiments, referring to fig. 1 to 3, the two support plates 1 are disposed in parallel, and the distance between the two support plates 1 is greater than or equal to the length of the hollow shaft 21, the vibration shaft 22 can rotatably penetrate through the two support plates 1, and two ends of the vibration shaft 22 are located at opposite outer sides of the two support plates 1, so that the counterweight eccentric devices 3 at two ends of the vibration shaft 22 can improve the vibration performance of the vibration shaft 22 at the opposite outer sides of the two support plates 1.

In some embodiments, with reference to fig. 1 to 3, two through shafts 2 are arranged in parallel, respectively two hollow shafts 21 are arranged in parallel, and two vibration shafts 22 are arranged in parallel; the two through shafts 2 are located on the same horizontal plane, wherein the axes of the two through shafts 2 are preferably located on the same plane, the axes of the two through shafts 2 are located on the same horizontal plane, correspondingly, the axes of the two hollow shafts 21 are located on the same plane, the axes of the two hollow shafts 21 are located on the same horizontal plane, the axes of the two vibrating shafts 22 are located on the same plane, and the axes of the two vibrating shafts 22 are located on the same horizontal plane; the axis of the hollow shaft 21 and the axis of the vibration shaft 22 are located on the same straight line, so that the vibration shaft 22 is located in the middle of the hollow shaft 21, the hollow shaft 21 and the vibration shaft 22 are arranged in parallel, the length of the hollow shaft 21 is smaller than that of the vibration shaft 22, and the end parts of the two ends of the vibration shaft 22 are located outside the end parts of the two ends of the hollow shaft 21.

In some embodiments, referring to fig. 1 to 3, a sealing seat 4 is disposed between two ends of the through shaft 2 and the two support plates 1, the sealing seat 4 penetrates the support plates 1 and is fixed to the support plates 1, the sealing seat 4 is fixedly connected to the hollow shaft 21, the sealing seat 4 is rotatably sleeved on the vibration shaft 22, and the sealing seat 4 is fixed to the support plates 1, so that the vibration shaft 22 rotates in the sealing seat 4. The sealing seat 4 comprises a first flange plate 41, a bearing seat 42 and a second flange plate 43, the first flange plate 41, the bearing seat 42 and the second flange plate 43 are sequentially arranged, two sides of the bearing seat 42 are respectively attached to the first flange plate 41 and the second flange plate 43, and a plurality of bolts sequentially penetrate through the first flange plate 41, the bearing seat 42 and the second flange plate 43 to be connected and fixed with nuts, so that the first flange plate 41, the bearing seat 42 and the second flange plate 43 are attached and fixed; the first flange 41 is welded and fixed with the hollow shaft 21, and the welding between the first flange 41 and the hollow shaft 21 is full welding, that is, no welding seam exists between the first flange 41 and the hollow shaft 21; the bearing seat 42 is sleeved on the vibration shaft 22, and a bearing is arranged between the bearing seat 42 and the vibration shaft 22 so that the vibration shaft 22 can rotate in the bearing seat 42; referring to fig. 4 to 6, the outer wall of the bearing housing 42 is welded and fixed to the support plate 1, and the bearing housing 42 is preferably non-full-welded to the support plate 1, wherein the lower left or right between the bearing housing 42 and the support plate 1 is full-welded, and a full-welded portion 9 is disposed at the lower left or right between the bearing housing 42 and the support plate 1 to reduce the welding stress between the bearing housing 42 and the support plate 1; the second flange 43 is rotatably sleeved on the vibration shaft 22, a gap is formed between the second flange 43 and the vibration shaft 22, so that the vibration shaft 22 vibrates in the second flange 43, and a sealing member is arranged between the second flange 43 and the vibration shaft 22.

In some embodiments, referring to fig. 1 to 3, the counterweight eccentric 3 comprises a pendulum 31 and a locking member 32, the pendulum 31 being located outside the hollow shaft 21, and the pendulum 31 being mounted on the vibration shaft 22; when the vibration shaft 22 rotates, the pendulum bob 31 rotates along with the vibration shaft 22 to enhance the vibration of the vibration shaft 22, so as to enhance the vibration strength of the two vibration shafts 22, and the frequencies of the two vibration shafts 22 are equal and the directions of rotation are opposite, so as to optimize the vibration performance of the vibration exciter. The locking piece 32 is a bolt and nut assembly, the pendulum 31 is provided with two mounting plates 312, the two mounting plates 312 penetrate through the vibration shaft 22, and the bolt penetrates through the two mounting plates 312 to be connected with the nut, so that the pendulum 31 is mounted on the vibration shaft 22; the side wall of the vibrating shaft 22 is provided with key bits 313, the key bits 313 are positioned at both ends of the vibrating shaft 22, and the pendulum 31 is clamped in the key bits 313. Pendulum 31 is "T" font setting, and balancing weight 311 is installed to pendulum 31's both sides, and balancing weight 311 passes through the bolt to be installed on pendulum 31, and the bolt passes balancing weight 311 and is connected with pendulum 31 to increase pendulum 31's weight, be favorable to optimizing the vibration performance of vibration axle 22, thereby optimize the vibration performance of vibration exciter.

In some embodiments, referring to fig. 3, the end portions of the vibration shaft 22 are respectively provided with an end cap 6 and an elastic connection cap 7, the end cap 6 and the elastic connection cap 7 are located at opposite outer sides of the two support plates 1, wherein the end cap 6 abuts against the pendulum 31, the elastic connection cap 7 abuts against another pendulum 31, and the elastic connection cap 7 is used for connecting with the driving device 5.

In some embodiments, please refer to fig. 7, which illustrates a screening device with the vibration exciter assembly, wherein the screening device includes a vibrating screen, a dewatering screen, etc., the screening device includes a screen box 8 and two sets of driving devices 5, the vibration exciter is installed on the screen box 8, so that the two support plates 1 are installed on the screen box 8, the two sets of driving devices 5 are located at opposite outer sides of the two support plates 1, and further, the two sets of driving devices 5 may be located at opposite sides of the two support plates 1, or at opposite sides of the two support plates 1. The two groups of driving devices 5 are respectively connected with the two vibration shafts 22, wherein the two groups of driving devices 5 are respectively in flexible connection with the two vibration shafts 22, and the vibration shafts 22 are in flexible connection with the driving devices 5 through the elastic connection covers 7. So that the two sets of driving devices 5 respectively drive the two vibration shafts 22 to rotate, and the rotation directions of the two vibration shafts 22 are opposite and the frequencies of the two vibration shafts are equal.

The implementation principle of the invention is as follows: the vibration exciter assembly comprises supporting plates 1, two through shafts 2 arranged on the two supporting plates 1 and counterweight eccentric devices 3 arranged at two ends of the two through shafts 2, wherein the two through shafts 2 respectively comprise hollow shafts 21 and vibration shafts 22 arranged in the hollow shafts 21, the counterweight eccentric devices 3 are arranged at two ends of the two vibration shafts 22 and are positioned at opposite outer sides of the two supporting plates 1, the two groups of driving devices 5 are used for respectively driving the two vibration shafts 22 to rotate in opposite directions and have equal frequency, and the counterweight eccentric devices 3 rotate along with the vibration shafts 22, so that the counterweight eccentric devices 3 at two ends of one rotating shaft and the counterweight eccentric devices 3 at two ends of the other vibration shaft 22 rotate in opposite directions and have equal frequency; because the rotation directions of the two vibration shafts 22 are opposite and the frequencies are equal, the centrifugal force generated by the counterweight eccentric devices 3 at the two ends of the two vibration shafts 22 is superposed along the vibration direction of the vibration shafts 22 and offset in a reverse centrifugal mode, so that the vibration of the two vibration shafts 22 is enhanced, the effect of optimizing the vibration performance of the vibration exciter is achieved, the vibration directions of the two vibration shafts 22 are fixed, the two vibration shafts 22 form reciprocating vibration in a single direction, and the vibration of the vibration exciter is more stable.

In the patent drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the patent; it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An exciter assembly, comprising:

two supporting plates (1) which are correspondingly arranged;

the two through shafts (2) are arranged on the two supporting plates (1), each through shaft (2) comprises a hollow shaft (21) and a vibration shaft (22) arranged in the hollow shaft (21), the hollow shaft (21) is fixed between the two supporting plates (1), and the hollow shaft (21) is rotatably connected with the vibration shaft (22); and

the counterweight eccentric devices (3) are arranged at two ends of the two vibrating shafts (22) and used for enhancing the vibration of the vibrating shafts (22), and the counterweight eccentric devices (3) are positioned at the opposite outer sides of the two supporting plates (1);

during operation, drive about two vibration axle (22) turn to the opposite and frequency equals, counter weight eccentric device (3) are followed vibration axle (22) rotate for one vibration axle (22) both ends counter weight eccentric device (3) and another vibration axle (22) both ends counter weight eccentric device (3) turn to the opposite and frequency equals.

2. Exciter assembly according to claim 1, characterized in that the axial center of the hollow shaft (21) and the axial center of the vibrating shaft (22) are located on the same line.

3. The vibration exciter assembly according to claim 1, wherein sealing seats (4) are respectively arranged between two ends of the through shaft (2) and the two support plates (1), the sealing seats (4) penetrate through the support plates (1) and are fixed with the support plates (1), the sealing seats (4) are fixed with the hollow shaft (21), and the sealing seats (4) are rotatably sleeved on the vibration shaft (22).

4. The exciter assembly according to claim 3, wherein the sealing seat (4) comprises a first flange (41), a bearing seat (42) and a second flange (43) which are sequentially arranged, the first flange (41) is fixed with the hollow shaft (21), the bearing seat (42) penetrates through the support plate (1) and is fixed with the support plate (1), and the second flange (43) is rotatably sleeved on the vibrating shaft (22).

5. Exciter assembly according to claim 1, characterized in that said counterweight eccentric (3) comprises a pendulum (31), said pendulum (31) being located outside said hollow shaft (21), said pendulum (31) being mounted on said vibrating shaft (22).

6. An exciter assembly according to claim 5, characterized in that the weighted eccentric (3) further comprises a retaining member (32), the pendulum (31) being provided with two mounting plates (312), the two mounting plates (312) passing through the vibrating shaft (22) and being connected to the retaining member (32) to achieve a fixed mounting of the pendulum (31) on the vibrating shaft (22).

7. A vibration exciter assembly according to claim 5, wherein said pendulum (31) is arranged in a T-shape, and weights (311) are mounted on both sides of said pendulum (31) to increase the weight of said pendulum (31).

8. Exciter assembly according to claim 5, characterized in that the hollow shaft (21) has a length which is smaller than the length of the vibration shaft (22).

9. An exciter assembly according to claim 1, wherein the axes of the two through shafts (2) are located on the same horizontal plane.

10. A screening device, characterized in that it is equipped with an exciter assembly according to any one of claims 1 to 9, and that it comprises two sets of driving means (5), two sets of said driving means (5) being located on opposite outer sides of two support plates (1), two sets of said driving means (5) being connected to two said vibration shafts (22) respectively, for driving the two said vibration shafts (22) to turn in opposite directions and to have equal frequencies.

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