Transmission device of planetary mixer

Abstract

The utility model relates to a transmission device of a planetary mixer, which comprises a cross beam, a transmission shaft, a planetary box and a bearing seat, the transmission shaft is connected with the planetary box, the bearing seat is sleeved outside the planetary box and the transmission shaft, the bearing seat is connected with the cross beam, and the upper end of the bearing seat is connected with the transmission shaft through an upper bearing. The lower end of the bearing seat is connected with the planetary box through a lower bearing; and the lower bearing is a pivotal bearing. According to the utility model, the position of the bearing seat is adjusted to be below the cross beam, and the pivotal bearing is adopted to replace the original lower bearing, so that the planetary box is stably fixed on the pivotal bearing. Due to the change, the whole planetary box and the stirring device are not suspended below the lower bearing but suspended above the pivotal bearing, so that the distance from the lower bearing to the stirring paddle is remarkably shortened. Due to the fact that the pivotal bearing has a large supporting radius, the operation stability of the planetary box and the stirring device on the bearing is greatly improved, and the risks of shaking and cylinder scraping in the equipment operation process are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of mixing equipment, specifically to a transmission device for a planetary mixer. Background Technology

[0002] With continuous societal progress, enterprises are rapidly moving towards automation and large-scale production, leading to a surge in demand for planetary mixers. The batch processing capacity of materials using planetary mixers has rapidly increased from tens of liters initially to hundreds, thousands, and even large-scale operations of 2000L, 3000L, 5000L, and 10000L. This development trend poses a significant challenge to the traditional transmission structure of planetary mixers. For example... Figure 1 As shown, in the traditional transmission structure of a planetary mixer, the bearing housing is connected above the crossbeam, and the drive shaft above the crossbeam is connected to the bearing housing via upper and lower bearings. As the material throughput increases, the load on the lower bearing also increases, and the excessive distance between the lower bearing and the agitator causes the equipment to easily shake during operation, requiring extremely high machining precision. Even a slight deviation in the perpendicularity of the bearing housing end face to the shaft hole can cause the agitator to tilt and scrape against the mixing cylinder. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a transmission device for a planetary mixer. This device moves the position of the bearing seat downward, and the planetary box is connected to the bearing seat through the lower bearing. This shortens the distance from the lower bearing to the agitator, improves the operational stability of the planetary box and the agitator, and effectively reduces the risk of shaking and cylinder scraping during equipment operation.

[0004] The technical solution to the above technical problem is: a transmission device for a planetary mixer, comprising a crossbeam, a transmission shaft, a planetary gearbox, and a bearing housing. The transmission shaft is connected to the planetary gearbox, and the bearing housing is fitted on the outside of the planetary gearbox and the transmission shaft. The bearing housing is connected to the crossbeam, and the upper end of the bearing housing is connected to the transmission shaft through an upper bearing, and the lower end of the bearing housing is connected to the planetary gearbox through a lower bearing.

[0005] Furthermore, the bearing housing includes an upper small cylinder, an annular fixing plate, a lower large cylinder, and an annular support plate connected sequentially from top to bottom. The annular fixing plate is located below the crossbeam and connected to the crossbeam. The upper small cylinder is connected to the transmission shaft through an upper bearing. The annular support plate is stepped, and the lower bearing is located on the step of the annular support plate and connected to the annular support plate.

[0006] Furthermore, a seal is also provided between the bearing housing below the lower bearing and the planetary gearbox.

[0007] Furthermore, an annular flange is provided on the outer side of the planetary box, and the annular flange is detachably connected to the lower bearing.

[0008] Furthermore, the lower bearing is a slewing bearing.

[0009] By adopting the above technical solution, this utility model has the following beneficial effects:

[0010] 1. The bearing housing was repositioned below the crossbeam, and a slewing bearing replaced the original lower bearing. Simultaneously, an annular flange was added to the center of the planetary gearbox, allowing it to be securely fixed to the slewing bearing. This modification means the entire planetary gearbox and agitator are no longer suspended below the lower bearing, but rather above the slewing bearing, significantly shortening the distance between the lower bearing and the agitator. Due to the larger support radius of the slewing bearing and the reduced distance between the lower bearing and the agitator, the operational stability of the planetary gearbox and agitator on the bearing is greatly improved, effectively reducing the risk of shaking and cylinder scraping during equipment operation.

[0011] 2. A seal is also installed between the bearing housing below the lower bearing and the planetary box, which can effectively prevent materials from splashing onto the upper part of the planetary box during operation. This not only improves the cleanliness of the equipment, but also further ensures the smooth operation of production.

[0012] The technical features of the transmission device of the planetary mixer of this utility model will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 : Schematic diagram of the transmission device of a traditional planetary mixer.

[0014] Figure 2 : Schematic diagram of the transmission device of the planetary mixer of this utility model.

[0015] Figure 3 : Schematic diagram of the bearing housing structure of this utility model.

[0016] Figure 1 In the middle: P1-Agitator, P2-Planetary box, P3-Crossbeam, P4-Bearing housing, P5-Upper bearing, P6-Lower bearing, P7-Drive shaft, P8-Round nut.

[0017] Figures 2-3 In the middle: 1-Agitator, 2-Planetary box, 3-Crossbeam, 4-Bearing seat, 41-Upper small cylinder, 42-Annular fixing plate, 43-Lower large cylinder, 44-Annular support plate, 5-Upper bearing, 6-Lower bearing, 7-Drive shaft, 8-Round nut, 9-Bolt, 10-Flange, 11-Seal. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] Example 1: A transmission device for a planetary mixer, such as... Figures 2-3 As shown, it includes a crossbeam 3, a drive shaft 7, a planetary gearbox 2, and a bearing housing 4. The drive shaft 7 is connected to the planetary gearbox 2 and is limited by a round nut 8. The bearing housing 4 is fitted on the outside of part of the planetary gearbox 2 and the drive shaft 7. The bearing housing 4 is connected to the crossbeam 3. The upper end of the bearing housing is connected to the drive shaft 7 through an upper bearing 5, and the lower end of the bearing housing 4 is connected to the planetary gearbox 2 through a lower bearing 6.

[0020] In this embodiment, the bearing housing 4 includes an upper small cylinder 41, an annular fixing plate 42, a lower large cylinder 43, and an annular support plate 44 connected sequentially from top to bottom. Specifically, the lower end of the upper small cylinder 41 is connected to the inner end of the annular fixing plate 42, the outer end of the annular fixing plate 42 is connected to the upper end of the lower large cylinder 43, and the lower end of the lower large cylinder 43 is connected to the outer end of the annular support plate 44. The annular fixing plate 42 is located below the crossbeam 3 and connected to the crossbeam 3. The upper small cylinder 41 passes through the crossbeam 3 and is connected to the drive shaft 7 via the upper bearing 5. The annular support plate 44 is stepped, and the lower bearing 6 is located on the step of the annular support plate and connected to the annular support plate 44. A sealing element 11, which is a skeleton oil seal, is also provided between the bearing housing 4 below the lower bearing and the planetary gearbox 2.

[0021] In this embodiment, an annular flange 10 is provided on the middle of the outer side of the planetary box, and the annular flange 10 is connected to the lower bearing 6 by bolts 9.

[0022] In this embodiment, the lower bearing 6 is a slewing bearing. As an alternative, the lower bearing 6 can also be other bearings whose performance meets the usage requirements.

[0023] The specific structures of the drive shaft, planetary gearbox, agitator, crossbeam, and other components described in this utility model are the same as those in the prior art, and will not be repeated here.

[0024] The novel transmission structure of the planetary mixer's transmission device has achieved significant results in improving the stability and cleanliness of the planetary mixer's operation, providing strong support for enterprises' automated and large-scale production.

Claims

1. A transmission device for a planetary mixer, comprising a crossbeam (3), a transmission shaft (7), a planetary gearbox (2), and a bearing housing (4), wherein the transmission shaft is connected to the planetary gearbox, characterized in that: The bearing housing (4) is fitted on the outside of the planetary box (2) and the drive shaft (7). The bearing housing is connected to the crossbeam (3). The upper end of the bearing housing is connected to the drive shaft through the upper bearing (5), and the lower end of the bearing housing is connected to the planetary box through the lower bearing (6).

2. The transmission device of the planetary mixer according to claim 1, characterized in that: The bearing housing (4) includes an upper small cylinder (41), an annular fixing plate (42), a lower large cylinder (43) and an annular support plate (44) connected from top to bottom. The annular fixing plate (42) is located below the crossbeam and connected to the crossbeam (3). The upper small cylinder (41) is connected to the transmission shaft (7) through the upper bearing (5). The annular support plate (44) is set in a stepped shape. The lower bearing (6) is located on the step of the annular support plate and connected to the annular support plate (44).

3. The transmission device of the planetary mixer according to claim 2, characterized in that: A seal (11) is also provided between the bearing housing (4) below the lower bearing and the planetary box (2).

4. The transmission device of the planetary mixer according to any one of claims 1-3, characterized in that: An annular flange (10) is provided on the outer side of the planetary box, and the annular flange is detachably connected to the lower bearing (6).

5. The transmission device of the planetary mixer according to any one of claims 1-3, characterized in that: The lower bearing is a slewing bearing.

6. The transmission device of the planetary mixer according to claim 4, characterized in that: The lower bearing is a slewing bearing.

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