Permanent magnet eddy current transmission type reciprocating vibrating sieve tray tower

Abstract

The utility model relates to a permanent magnet eddy current transmission type reciprocating vibration sieve plate tower, which belongs to the technical field of reciprocating vibration sieve plate towers, and comprises an eccentric component, a rigid coupling, a speed reducer, a motor, a permanent magnet eddy current transmission device and a reciprocating vibration sieve plate tower, the reciprocating vibration sieve tray tower comprises a tower body, a tower plate horizontally arranged in the tower body and a lifting shaft connected with the tower plate; the motor, the speed reducer and the eccentric assembly are in transmission connection in sequence; the rigid coupling is connected between the speed reducer and the eccentric assembly; the eccentric assembly is in transmission connection with the lifting shaft; the permanent magnet eddy current transmission device is connected between the motor and the speed reducer or between the speed reducer and the eccentric assembly; the vibration value and noise of a transmission system can be effectively reduced when the tower plate reciprocates, the stability of the transmission system is improved, the failure rate of equipment is reduced, the service life of the equipment is prolonged, and the maintenance cost of the equipment is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of reciprocating vibrating screen plate towers, and specifically relates to a permanent magnet eddy current transmission type reciprocating vibrating screen plate tower. Background Art

[0002] The reciprocating vibrating screen plate tower is equipped with multiple layers of plates. During operation, the transmission system drives the plates to reciprocate up and down, thereby enhancing the mixing and reaction of the materials in the tower. The current reciprocating vibrating screen plate tower is directly connected to the reducer by the motor. The reducer drives the eccentric component to rotate through a rigid coupling. The connecting rod connected to the eccentric component drives the plates of the reciprocating vibrating screen plate tower to reciprocate up and down.

[0003] Due to the working characteristics of the eccentric structure, the tower plate has two load impacts on the motor, reducer, eccentric assembly and coupling in each reciprocating operation cycle, and due to the large mass of the tower plate, this impact will damage the transmission system, especially after the reciprocating vibrating screen plate tower has been running for a short time, solid phase or crystals will be deposited on the tower plate, which will further increase the mass of the tower plate and the impact force of the tower plate during reciprocating motion, resulting in damage to the motor keyway, motor burning, reducer bearing and gear damage, eccentric shaft breakage, eccentric shaft bearing damage, coupling and frame damage, etc., which will increase the equipment maintenance cost and have a great impact on production. Utility Model Content

[0004] In order to overcome the problems existing in the background technology, the utility model provides a permanent magnet eddy current drive reciprocating vibrating screen plate tower, which can effectively reduce the vibration value and noise of the transmission system when the tower plate reciprocates, increase the stability of the transmission system, reduce the equipment failure rate, extend the equipment service life, and reduce the equipment maintenance cost.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] The permanent magnet eddy current transmission type reciprocating vibrating screen plate tower comprises an eccentric component 1, a rigid coupling 2, a reducer 3, a motor 4, a permanent magnet eddy current transmission device 9 and a reciprocating vibrating screen plate tower; the reciprocating vibrating screen plate tower comprises a tower body 8, a tower plate 7 horizontally arranged in the tower body and a lifting shaft 6 connected to the tower plate 7; the motor 4, the reducer 3 and the eccentric component 1 are sequentially connected in transmission; the rigid coupling 2 is connected between the reducer 3 and the eccentric component 1; the eccentric component 1 is connected in transmission to the lifting shaft 6; the permanent magnet eddy current transmission device 9 is connected between the motor 4 and the reducer 3 or between the reducer 3 and the eccentric component 1.

[0007] Preferably, the permanent magnet eddy current transmission device 9 comprises a permanent magnet eddy current transmission device body and expansion coupling plates arranged on both sides of the permanent magnet eddy current transmission device body.

[0008] Preferably, the permanent magnet eddy current transmission device 9 is arranged between the motor 4 and the reducer 3; the output shaft of the motor 4 is connected to the input end of the permanent magnet eddy current transmission device 9 by a tightening connection disk; the output end of the permanent magnet eddy current transmission device 9 is connected to the input shaft of the reducer 3 by a tightening connection disk.

[0009] Preferably, the permanent magnet eddy current transmission device 9 is connected between the reducer 3 and the eccentric assembly 1; the output shaft of the reducer 3 is connected to the input end of the permanent magnet eddy current transmission device 9 by a tightening connection disk, and the output end of the permanent magnet eddy current transmission device 9 is connected to the input shaft of the eccentric assembly 1 by a tightening connection disk.

[0010] Preferably, the eccentric assembly 1 comprises an eccentric shaft 10, two flywheels 11, three bearings 12 and a connecting rod 13; the two flywheels 11 are respectively arranged on both sides of the connecting rod 13, the flywheel 11 and the three bearings 12 are installed on the eccentric shaft 10, and the connecting rod 13 is connected to the intermediate bearing 12.

[0011] Preferably, the eccentric assembly 1 , the reducer 3 , the motor 4 and the permanent magnet eddy current transmission device 9 are fixed above the reciprocating vibrating screen plate tower through a frame 5 .

[0012] Beneficial effects of the utility model:

[0013] The utility model aims at the characteristics of the reciprocating vibrating screen plate tower with large tower plates and excessive load and impact during reciprocating motion. By adding a permanent magnet eddy current transmission device, the problem of excessive load and impact during reciprocating motion of the tower plates and damage to the transmission system can be effectively solved, the failure rate of the transmission system of the reciprocating vibrating screen plate tower can be effectively reduced, the service life of the equipment can be extended, and the vibration value and noise during the operation of the reciprocating vibrating screen plate tower can be reduced.

[0014] The permanent magnet eddy current transmission device of the utility model is expansion-connected to the transmission shaft through an expansion coupling disc, which can transmit higher torque, has low installation precision requirements, is interchangeable, and has the advantages of overload protection function. It can effectively avoid damage to the key and keyway during key connection and is more suitable for the operating characteristics of the reciprocating vibrating screen plate tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model (the permanent magnet eddy current transmission device is arranged between the motor and the reducer);

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model (the permanent magnet eddy current transmission device is arranged between the reducer and the eccentric component);

[0017] Figure 3 It is a schematic diagram of the structure of the eccentric component of the utility model;

[0018] Figure 4It is a structural schematic diagram of a permanent magnet eddy current transmission device;

[0019] In the figure, 1-eccentric assembly, 2-rigid coupling, 3-reducer, 4-motor, 5-frame, 6-lifting shaft, 7-tower plate, 8-tower body, 9-permanent magnet eddy current transmission device, 10-eccentric shaft, 11-flywheel, 12-bearing, 13-connecting rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to facilitate understanding by technicians.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0022] like Figure 1-3 As shown, the permanent magnet eddy current transmission type reciprocating vibrating screen plate tower comprises an eccentric component 1, a rigid coupling 2, a reducer 3, a motor 4, a permanent magnet eddy current transmission device 9, a frame 5 and a reciprocating vibrating screen plate tower. The eccentric component 1, the reducer 3, the motor 4 and the permanent magnet eddy current transmission device 9 serve as the transmission system of the reciprocating vibrating screen plate tower, and are fixed on the top of the reciprocating vibrating screen plate tower through the frame 5, driving the tower plate 7 in the reciprocating vibrating screen plate tower to do linear reciprocating motion up and down.

[0023] The reciprocating vibrating screen plate tower includes a tower body 8, a tower plate 7 and a lifting shaft 6. A plurality of tower plates 7 are arranged horizontally in the tower body. The lifting shaft 6 is vertically connected to each tower plate 7. The up and down reciprocating motion of the lifting shaft 6 drives the tower plate 7 to reciprocate up and down in the tower body 8, thereby enhancing the mixing and reaction of the materials in the tower.

[0024] The motor 4, the reducer 3 and the eccentric assembly 1 are sequentially connected in transmission, the rigid coupling 2 is connected between the reducer 3 and the eccentric assembly 1, and the eccentric assembly 1 is connected in transmission with the lifting shaft 6. The eccentric assembly 1 converts the rotational motion of the motor 4 into linear reciprocating motion, and the eccentric assembly 1 is any structure that can convert the rotational motion of the motor 4 into linear reciprocating motion. As one structural example, the eccentric assembly 1 includes an eccentric shaft 10, two flywheels 11, three bearings 12 and a connecting rod 13, and the connecting rod 13 is connected with the lifting shaft 6. Three bearings 12 are installed on the eccentric shaft 10, one of the bearings 12 is arranged in the middle, two flywheels 11 are respectively arranged on both sides of the middle bearing 12, and the other two bearings 12 are respectively arranged on the outsides of the two flywheels 11. The connecting rod 13 is connected to the lower end of the middle bearing 12. The rotational motion of the motor 4 drives the eccentric shaft 10 to rotate, and the rotational motion of the eccentric shaft 10 drives the connecting rod 13 to reciprocate up and down through the middle bearing 12. The up and down reciprocating motion of the connecting rod 13 drives the lifting shaft 6 to reciprocate up and down.

[0025] The permanent magnet eddy current transmission device 9 is connected between the motor 4 and the reducer 3 (see attached Figure 1 ) or connected between the reducer 3 and the eccentric shaft 10 of the eccentric assembly 1 (such as the attached Figure 2 ). Compared with the hard mechanical connection to transmit torque, the permanent magnet eddy current transmission has greatly reduced the connection accuracy requirements for the motor and the load, and the centering error can reach 5mm. In addition, this air gap connection method can isolate the transmission of vibration. After use, it can reduce system vibration by up to 80%, and the torque transmission fluctuation does not exceed 5%.

[0026] In the operation of the reciprocating vibrating screen plate tower, there are two load impacts on the motor 4, the reducer 3, the eccentric assembly 1 and the coupling in each reciprocating operation cycle. Since the mass of the tower plate 7 is large, the load impact force is large, which can easily cause damage to the transmission system. In particular, during the operation, when solid materials or crystals accumulate on the tower plate 7, this load impact is further increased. For example, when the reciprocating vibrating screen plate tower is applied to the extraction of wet phosphoric acid, during the operation, the impurities in the wet phosphoric acid gradually crystallize on the tower plate 7, increasing the mass of the tower plate 7. During the reciprocating motion of the tower plate 7, the motion inertia and vibration are large. In each reciprocating operation cycle, the load impact on the motor 4, the reducer 3, the eccentric assembly 1 and the coupling is further increased, and the torque of the transmission system becomes larger, and even the eccentric shaft 10 is broken, and the motor 4 and the reducer 3 are damaged. In addition, in the existing rigidly connected transmission system, the motor 4 often has system overload or stall phenomenon during operation, which can easily cause the motor 4 to be burned. After adding the permanent magnet eddy current transmission device 9, since there is no direct physical connection between the motor 4 and the load shaft, it has the function of buffering and automatic protection for impact loads and equipment with possible stalling, reducing the probability of motor 4 being burned. After the utility model is put into use, during soft start, the starting peak current can be significantly reduced, saving more than 25% of electric energy, and the equipment failure rate is greatly reduced, effectively reducing the equipment maintenance cost. The comparison of the equipment operation before and after the utility model is put into use is shown in the following table:

[0027] Comparison of the operation of permanent magnet eddy current transmission device before and after use

[0028]

[0029] The permanent magnet eddy current transmission device 9 comprises a permanent magnet eddy current transmission device body and expansion coupling plates arranged on both sides of the permanent magnet eddy current transmission device body. The permanent magnet eddy current transmission device body comprises a conductor rotor and a magnetic rotor. The conductor rotor is connected to the input shaft, and the magnetic rotor is connected to the load shaft. An air gap is left between the conductor rotor and the magnetic rotor. The permanent magnet eddy current transmission device body of the utility model adopts a basic type. In practical applications, three improved types of delayed type, torque-limited type and speed-regulating type can also be selected. Magna Company abroad and Chongqing Purenda Technology Co., Ltd. in China can provide mature products.

[0030] The permanent magnet eddy current transmission device 9 is connected to the motor 4, the reducer 3 or the eccentric shaft 10 by an expansion connection disc. In this expansion connection mode, the force acts on the entire circumference of the connected shaft, with a large force area and uniform force. Compared with the traditional key connection, the expansion connection can transmit higher torque, has low installation precision requirements, is interchangeable, and has overload protection functions. It is more suitable for the working characteristics of the reciprocating vibrating screen plate tower and can effectively avoid damage to the key and keyway during key connection.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A permanent magnet eddy current transmission reciprocating vibrating screen plate tower, characterized in that: The invention comprises an eccentric assembly (1), a rigid coupling (2), a reducer (3), a motor (4), a permanent magnet eddy current transmission device (9) and a reciprocating vibrating screen plate tower; the reciprocating vibrating screen plate tower comprises a tower body (8), a tower plate (7) horizontally arranged in the tower body and a lifting shaft (6) connected to the tower plate (7); the motor (4), the reducer (3) and the eccentric assembly (1) are sequentially connected in driving connection; the rigid coupling (2) is connected between the reducer (3) and the eccentric assembly; the eccentric assembly (1) is connected in driving connection with the lifting shaft (6); and the permanent magnet eddy current transmission device (9) is arranged between the motor (4) and the reducer (3) or between the reducer (3) and the eccentric assembly (1).

2. The permanent magnet eddy current transmission reciprocating vibrating screen plate tower according to claim 1, characterized in that: The permanent magnet eddy current transmission device (9) comprises a permanent magnet eddy current transmission device body and expansion coupling discs arranged on both sides of the permanent magnet eddy current transmission device body.

3. The permanent magnet eddy current transmission reciprocating vibrating screen plate tower according to claim 2, characterized in that: The permanent magnet eddy current transmission device (9) is arranged between the motor (4) and the reducer (3); the output shaft of the motor (4) is connected to the input end of the permanent magnet eddy current transmission device (9) by means of an expansion coupling disc; and the output end of the permanent magnet eddy current transmission device (9) is connected to the input shaft of the reducer (3) by means of an expansion coupling disc.

4. The permanent magnet eddy current transmission reciprocating vibrating screen plate tower according to claim 2, characterized in that: The permanent magnetic eddy current transmission device (9) is arranged between the reducer (3) and the eccentric assembly (1); the output shaft of the reducer (3) and the input end of the permanent magnetic eddy current transmission device (9) are connected by means of an expansion coupling disc, and the output end of the permanent magnetic eddy current transmission device (9) and the input shaft of the eccentric assembly (1) are connected by means of an expansion coupling disc.

5. The permanent magnet eddy current drive reciprocating vibrating screen plate tower according to any one of claims 1 to 4, characterized in that: The eccentric assembly (1) comprises an eccentric shaft (10), two flywheels (11), three bearings (12) and a connecting rod (13); the two flywheels (11) are respectively arranged on both sides of the connecting rod (13), the flywheel (11) and the three bearings (12) are mounted on the eccentric shaft (10), and the connecting rod (13) is connected to the intermediate bearing (12).

6. The permanent magnet eddy current transmission reciprocating vibrating screen plate tower according to claim 5, characterized in that: The eccentric assembly (1), the reducer (3), the motor (4) and the permanent magnet eddy current transmission device (9) are fixed above the reciprocating vibrating screen plate tower via a frame (5).

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