Improved driving device for washing tower

Abstract

The improved driving device for the washing tower comprises a motor, a speed reducer and an eccentric wheel assembly, one side of the eccentric wheel assembly is connected with an adjusting support a, a seat frame and a rolling bearing seat, the other side of the eccentric wheel assembly is connected with the motor through a pin coupling a, and the motor and the speed reducer are connected together through a pin coupling b. The eccentric wheel assembly comprises eccentric wheels, an eccentric shaft and a balancing weight, a rolling bearing is arranged on the eccentric shaft, the eccentric wheels are symmetrically installed on the two sides of the rolling bearing, three rows of holes are symmetrically formed in the eccentric shaft, and the balancing weight is connected through the three rows of holes. The eccentric wheel assembly is arranged on the driving device, the eccentric wheels are symmetrically arranged, so that the torque on the eccentric shaft is in a static balance state, the output torque of the speed reducer is stable, the tooth hitting phenomenon of a low-speed end gear disappears, the driving device does not generate other noise except the noise of the motor and the speed reducer, and the load requirement of the motor is stable; the motor current is stable.

Description

Technical Field

[0001] This utility model relates to the technical field of drive devices for scrubbing towers, and specifically to an improved drive device for scrubbing towers. Background Technology

[0002] The drive unit of a washing tower is a key component, providing power to the tower and enabling it to operate normally to perform functions such as washing, mass transfer, and mixing. Its type and function vary depending on the washing tower's application, structure, and process requirements.

[0003] Currently, the driving devices used in the chemical industry for refining phosphoric acid, such as washing towers and back-extraction towers, have moving parts suspended inside the tower. The weight of these moving parts is approximately 20-30 tons. The eccentric shaft driven by the output end of the reducer functions like a crankshaft. When the shaft rotates once, the moving parts move up and down once, the reducer makes an abnormal noise once, and the motor current fluctuates once. During operation, the reducer makes abnormal noise, the noise is loud, and the motor current fluctuates greatly.

[0004] Therefore, it is necessary to design an improved drive unit for scrubbing towers to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by designing an improved drive device for scrubbing towers that stabilizes current fluctuations and reduces noise. The specific technical solution adopted is as follows:

[0006] An improved drive device for a scrubbing tower includes a motor, a reducer, and an eccentric wheel assembly. One side of the eccentric wheel assembly is connected to an adjusting support a, a frame, and a rolling bearing housing. The other side of the eccentric wheel assembly is connected to the motor via a pin coupling a. The motor and the reducer are connected together via a pin coupling b. The motor, reducer, bearing housing, and eccentric wheel assembly are all mounted on the adjusting support b. The eccentric wheel assembly includes an eccentric wheel, an eccentric shaft, and a counterweight. A rolling bearing is mounted on the eccentric shaft, and the eccentric wheel is symmetrically mounted on both sides of the rolling bearing. The eccentric shaft has three rows of symmetrically arranged holes, through which the counterweight is connected.

[0007] Preferably, the eccentric wheel has a split structure and is fastened to both sides of the rolling bearing by bolts.

[0008] Preferably, the eccentric shaft is provided with a set bolt hole.

[0009] Preferably, the gap between the eccentric wheel and the eccentric shaft is filled with brass sheet.

[0010] Preferably, the reducer is model H2SH10-20 and the motor is model 315M-4 variable frequency motor.

[0011] Preferably, the counterweight has a size of 5KG-20KG.

[0012] Compared with the closest existing technology, the technical solution provided by this utility model has the following beneficial effects:

[0013] This invention features an eccentric wheel assembly on the drive unit. The symmetrical arrangement of the eccentric wheels ensures that the torque on the eccentric shaft is in a static balance state, resulting in a stable output torque from the reducer. The gear grinding phenomenon at the low speed end disappears. Apart from the noise from the motor and reducer, the drive unit generates no other noise, ensuring a stable motor load and motor current. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an improved drive device for a washing tower according to the present invention;

[0015] Figure 2 This is a schematic diagram of the eccentric wheel assembly structure of this utility model;

[0016] Figure 3 This is a fan-shaped unfolded view of the eccentric shaft of this utility model.

[0017] Among them: 1. Motor, 2. Reducer, 3. Eccentric wheel, 4. Eccentric shaft, 5. Rolling bearing, 6. Pin coupling a, 7. Pin coupling b, 8. Adjusting support a, 9. Adjusting support b, 10. Base frame, 11. Rolling bearing housing, 12. Three rows of holes. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution:

[0020] An improved drive unit for a scrubbing tower includes a motor 1, a reducer 2, and an eccentric wheel assembly. One side of the eccentric wheel assembly is connected to an adjusting support a 8, a frame 10, and a rolling bearing seat 11. The other side of the eccentric wheel assembly is connected to the motor 1 via a pin coupling a 6. The motor 1 and the reducer 2 are connected via a pin coupling b 7. The motor, reducer, bearing seat, and eccentric wheel assembly are all mounted on the adjusting support b. The eccentric wheel assembly includes an eccentric wheel 3, an eccentric shaft 4, and a counterweight. A rolling bearing 5 is mounted on the eccentric shaft 4, and the eccentric wheels 3 are symmetrically mounted on both sides of the rolling bearing 5. The eccentric shaft 4 has three symmetrically arranged rows of holes 12, through which the counterweight is connected. The eccentric wheel assembly and the symmetrical arrangement of the eccentric wheels 3 ensure that the torque on the eccentric shaft 4 is in a static balance state, resulting in stable reducer output torque, elimination of gear grinding at low speeds, and no other noise generated by the drive unit besides motor and reducer noise. The motor load demand is stable, and the motor current is stable.

[0021] Furthermore, the eccentric wheel 3 has a split structure and is fastened to both sides of the rolling bearing by bolts, which facilitates the disassembly and replacement of the bearing or adjustment of the counterweight, improving maintenance efficiency by more than 50%.

[0022] Furthermore, the eccentric wheel 3 can also be an integral structure, using a flat key structure, circumferentially fixed by the flat key, and press-fitted onto the eccentric shaft 4, transmitting torque through the flat key.

[0023] Furthermore, the eccentric shaft 4 is provided with set bolt holes.

[0024] Furthermore, the gap between the eccentric wheel 3 and the eccentric shaft 4 is filled with brass sheet to compensate for manufacturing tolerances and prevent vibration amplification caused by the gap.

[0025] Furthermore, the reducer 2 is model H2SH10-20, and the motor 1 is model 315M-4 variable frequency motor.

[0026] Furthermore, the counterweights are available in sizes ranging from 5KG to 20KG, allowing for adjustable mass distribution to ensure the eccentric shaft achieves static balance during rotation.

[0027] The working principle of the drive unit of this washing tower is as follows: After the variable frequency motor starts, it transmits power to the reducer 2 through the pin coupling b 7. The reducer 2 directly drives the eccentric shaft 4 of the eccentric wheel assembly to rotate through the pin coupling a 6. The rotation of the eccentric shaft 4 drives the eccentric wheel 3 to rotate. The two eccentric wheels 3 are symmetrically installed on both sides of the rolling bearing 5, with opposite eccentric directions, so that the centrifugal forces generated by them cancel each other out. When the eccentric wheel 3 rotates, the centrifugal forces of the two eccentric wheels 3 are equal in magnitude and opposite in direction, and the resultant force is zero, avoiding the radial impact load on the eccentric shaft 4 and ensuring static balance. In actual operation, due to manufacturing errors, the actual eccentricity of the eccentric wheel 3 may be inconsistent. This can be compensated for by adding counterweights in the three rows of holes 12 to maintain static balance. The balanced design of the eccentric wheel assembly makes the torque demand of the drive unit on the motor fluctuate very little. The variable frequency motor can accurately match the load and avoid excessive current fluctuations caused by impact loads.

[0028] In summary, this drive unit solves the problems of high vibration, high noise, and easy gear damage in traditional washing tower drive units through mechanical balance design and transmission structure optimization. It is especially suitable for industrial scenarios such as chemical and environmental protection where high stability and reliability are required.

[0029] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art can still make modifications or equivalent substitutions to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model are within the protection scope of the claims of this utility model pending approval.

Claims

1. An improved drive unit for a scrubbing tower, comprising a motor and a reducer, characterized in that: It also includes an eccentric wheel assembly. One side of the eccentric wheel assembly is connected to an adjusting support a, a base, and a rolling bearing housing. The other side of the eccentric wheel assembly is connected to a motor via a pin coupling a. The motor and the reducer are connected together via a pin coupling b. The motor, reducer, bearing housing, and eccentric wheel assembly are all mounted on the adjusting support b. The eccentric wheel assembly includes an eccentric wheel, an eccentric shaft, and a counterweight. A rolling bearing is mounted on the eccentric shaft, and the eccentric wheel is symmetrically mounted on both sides of the rolling bearing. The eccentric shaft has three rows of symmetrically arranged holes, through which the counterweight is connected.

2. An improved drive assembly for a washing tower as claimed in claim 1, wherein: The eccentric wheel is a split structure and is fastened to both sides of the rolling bearing by bolts.

3. An improved drive arrangement for a washing column as claimed in claim 1, wherein: The eccentric shaft is provided with set bolt holes.

4. The improved drive assembly for a washing tower as claimed in claim 1 wherein: The gap between the eccentric wheel and the eccentric shaft is filled with brass sheet.

5. The improved drive assembly for a washing tower as claimed in claim 1 wherein: The reducer is model H2SH10-20, and the motor is model 315M-4 variable frequency motor.

6. An improved drive arrangement for a washing column as claimed in claim 1, wherein: The counterweight has a specification of 5KG-20KG.

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