Stirring device with external bottom bearing

Abstract

The utility model discloses a stirring device with an external bottom bearing, which comprises a kettle body, a driving source arranged on the kettle body, a stirring shaft arranged in the kettle body and connected with the driving source, and the bottom bearing, the bottom bearing comprises a bearing seat, an external hole, a sliding bearing and a locking assembly; the bearing seat is fixedly arranged on the kettle body and is coaxial with the stirring shaft; the external hole is formed in the bearing seat and is communicated with an inner cavity of the kettle body and the outside; the sliding bearing is arranged in the external hole; the locking assembly is located on the outer side of the kettle body, the end, opposite to the driving source, of the stirring shaft extends into the external hole and is detachably connected with the sliding bearing, an outer fit clearance compensation structure is arranged between an outer ring of the sliding bearing and the external hole, and an inner fit clearance compensation structure is arranged between an inner ring of the sliding bearing and the stirring shaft. The utility model has the following advantages and effects: the bottom bearing can be conveniently replaced and maintained, so that the maintenance difficulty and the maintenance cost are reduced.

Description

Technical Field

[0001] This utility model relates to a stirring device, and more particularly to a stirring device with an external bottom bearing. Background Technology

[0002] A mixing device is a piece of equipment used to mix, prepare and transport materials of various properties. Its core working principle is to make the materials fully mixed and evenly distributed in the mixing container by the rotation or reciprocating motion of the agitator.

[0003] Because different models and sizes of stirring devices require different lengths of stirring shafts, a secondary bottom bearing is added at the end of the shaft furthest from the drive source to increase rotational stability when the stirring shaft is long. Existing bottom bearings are installed inside the vessel, meaning they are welded and fixed to the vessel body via a support structure. However, this method requires access to the vessel body for disassembly and maintenance when the bearing fails or ages, making maintenance inconvenient. Based on these issues, this improvement was developed. Utility Model Content

[0004] The purpose of this invention is to provide an externally mounted bottom bearing stirring device, which enables convenient replacement and maintenance of the bottom bearing, thereby reducing maintenance difficulty and cost.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a bottom bearing external stirring device, including a vessel body, a drive source installed in the vessel body, a stirring shaft installed in the vessel body and connected to the drive source, and a bottom bearing. The bottom bearing includes a bearing seat fixedly installed in the vessel body and coaxially arranged with the stirring shaft, an external hole formed in the bearing seat and communicating with the inner cavity of the vessel body and the outside, a sliding bearing disposed in the external hole, and a locking component that positions the sliding bearing in the external hole and is detachably fixedly connected to the bearing seat. The locking component is located on the outside of the vessel body, and one end of the stirring shaft opposite to the drive source extends into the external hole and is detachably connected to the sliding bearing. An external fit clearance compensation structure is provided between the outer ring of the sliding bearing and the external hole, and an internal fit clearance compensation structure is provided between the inner ring of the sliding bearing and the stirring shaft.

[0006] By adopting the above technical solution, a sliding bearing is installed to achieve rotational fit between the bearing housing and the stirring shaft, thereby improving the rotational stability of the stirring shaft. When the sliding bearing needs to be replaced, the worker can unlock the locking assembly on the outside of the vessel body and remove the sliding bearing through the external hole for replacement. This achieves convenient replacement and maintenance, reducing maintenance difficulty and costs. Furthermore, the external and internal fit clearance compensation structures compensate for assembly tolerances between components, further ensuring the rotational stability of the stirring shaft.

[0007] The locking assembly is further configured as follows: the locking assembly includes a bearing flange disposed at the lower end of the bearing housing, a plurality of fasteners connecting the bearing flange and the bearing housing, and a support sleeve disposed in the external hole and abutting the bearing flange and the sliding bearing at both ends respectively. The support sleeve cooperates with the external hole to restrict the sliding bearing from moving along the axis of the external hole.

[0008] By employing the above technical solution, the cooperation of the support sleeve, bearing flange, and external hole restricts the axial movement of the sliding bearing, thereby achieving stable installation of the sliding bearing. Furthermore, by using the bearing flange and support sleeve—that is, purchasing existing bearing flanges to fit the support sleeve—the required structure can be formed, thus reducing the production cost of this structure.

[0009] The structure is further configured such that the external mating clearance compensation structure includes an external abutting inclined surface disposed on the outer peripheral wall of the sliding bearing and gradually narrowing along the direction from the locking assembly to the stirring shaft, and an external mating inclined surface disposed on the external hole and corresponding to the external abutting inclined surface.

[0010] By adopting the above technical solution, the cooperation between the outer clamping inclined surface and the outer mating inclined surface can achieve tight assembly of the sliding bearing and the external hole, thereby compensating for the assembly tolerance and improving the rotational stability of the stirring shaft.

[0011] The internal fitting clearance compensation structure is further configured as follows: the internal fitting clearance compensation structure includes an inner clamping inclined surface disposed on the inner peripheral wall of the sliding bearing and gradually narrowing along the direction from the stirring shaft to the locking assembly, and an internal fitting inclined surface disposed on the stirring shaft and corresponding to the inner clamping inclined surface.

[0012] By adopting the above technical solution, the cooperation between the inner clamping inclined surface and the inner mating inclined surface can achieve a tight assembly of the sliding bearing and the stirring shaft, thereby compensating for the assembly tolerance and improving the rotational stability of the stirring shaft.

[0013] The external hole is further configured to include a pulling component that can drive the sliding bearing to move in opposite directions of the stirring shaft.

[0014] By adopting the above technical solution, the pull component is designed to provide a force application point, which facilitates the disassembly of the sliding bearing and makes the operation more convenient.

[0015] The pull assembly is further configured as follows: the pull assembly includes a pull ring disposed on one end face of the sliding bearing opposite locking assembly, a plurality of pull strips fixedly connected to the pull ring and extending downward and passing through the sliding bearing, and a pull hole opened in each pull strip, the pull hole being located below the sliding bearing.

[0016] By adopting the above technical solution, when the sliding bearing becomes stuck due to long-term wear, a tool can be inserted into the pull hole, and then force can be applied to the sliding bearing through the pull bar and pull ring, thus achieving convenient disassembly of the sliding bearing.

[0017] The further configuration is as follows: both the pull ring and the pull bar are embedded in the outer hole wall.

[0018] By adopting the above technical solution, the assembly of other components will not be interfered with.

[0019] A further feature is provided: a limiting ring is provided between the support sleeve and the side wall of the external hole.

[0020] By adopting the above technical solution, the setting of the limiting ring limits the position of the support sleeve, so that it can provide stable support for the sliding bearing.

[0021] In summary, this utility model has the following beneficial effects: it enables convenient replacement and maintenance of the bottom bearing, thereby reducing maintenance difficulty and cost. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0023] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0024] Figure 3 This is a partial structural diagram of an embodiment.

[0025] In the diagram: 1. Vessel body; 2. Drive source; 3. Stirring shaft; 4. Bottom bearing; 41. Bearing seat; 42. External hole; 43. Sliding bearing; 44. Bearing flange; 45. Fastener; 46. Support sleeve; 51. Outer clamping slope; 52. Outer mating slope; 61. Inner clamping slope; 62. Inner mating slope; 71. Pull ring; 72. Pull bar; 73. Pull hole; 8. Limiting ring. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] refer to Figures 1 to 3An externally mounted bottom bearing stirring device includes a vessel body 1, a drive source 2 fixedly installed in the vessel body 1, a stirring shaft 3 installed inside the vessel body 1 and fixedly connected to the output shaft of the drive source 2, and a bottom bearing 4. The drive source 2 is a motor. The bottom bearing 4 includes a bearing seat 41 fixedly mounted in the vessel body 1 and coaxially arranged with the stirring shaft 3, an external hole 42 formed in the bearing seat 41 and communicating with the inner cavity of the vessel body 1 and the outside, a sliding bearing 43 disposed in the external hole 42, and a locking assembly that positions the sliding bearing 43 within the external hole 42 and is detachably fixedly connected to the bearing seat 41. The locking assembly is located outside the vessel body 1, and one end of the stirring shaft 3 opposite to the drive source 2 extends into the external hole 42 and is detachably connected to the sliding bearing 43. An external clearance compensation structure is provided between the outer ring of the sliding bearing 43 and the external hole 42, and an internal clearance compensation structure is provided between the inner ring of the sliding bearing 43 and the stirring shaft 3.

[0028] The locking assembly includes a bearing flange 44 located at the lower end of the bearing housing 41, several fasteners 45 connecting the bearing flange 44 and the bearing housing 41, and a support sleeve 46 located in the external hole 42, with its two ends respectively abutting against the bearing flange 44 and the sliding bearing 43. The support sleeve 46 cooperates with the external hole 42 to restrict the movement of the sliding bearing 43 along the axis of the external hole 42. The fasteners 45 are bolts that pass through the bearing flange 44 and are threadedly connected to the bearing housing 41.

[0029] The external clearance compensation structure includes an external clamping slope 51 formed on the outer peripheral wall of the sliding bearing 43 and gradually narrowing along the direction from the locking assembly to the stirring shaft 3, and an external mating slope 52 formed on the external hole 42 and corresponding to the external clamping slope 51. The internal clearance compensation structure includes an internal clamping slope 61 formed on the inner peripheral wall of the sliding bearing 43 and gradually narrowing along the direction from the stirring shaft 3 to the locking assembly, and an internal mating slope 62 formed on the stirring shaft 3 and corresponding to the internal clamping slope 61.

[0030] An external hole 42 contains a pulling assembly that can drive the sliding bearing 43 to move against the opposite stirring shaft 3. The pulling assembly includes a pull ring 71 disposed on one end face of the opposite locking assembly of the sliding bearing 43, a plurality of pull strips 72 fixedly connected to the outer peripheral wall of the pull ring 71 and extending downward and passing through the sliding bearing 43, and a pull hole 73 opened in each pull strip 72. The pull hole 73 is located below the sliding bearing 43, and the number of pull strips 72 is preferably two. The pull ring 71 and the pull strips 72 are both embedded in the wall of the external hole 42, and a limiting ring 8 is placed between the support sleeve 46 and the side wall of the external hole 42, and the limiting ring 8 is fitted onto the support sleeve 46.

[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A bottom bearing external stirring device, comprising a vessel body (1), a drive source (2) installed in the vessel body (1), a stirring shaft (3) installed inside the vessel body (1) and connected to the drive source (2), and a bottom bearing (4), characterized in that: The bottom bearing (4) includes a bearing seat (41) fixedly disposed on the vessel body (1) and coaxially disposed with the stirring shaft (3), an external hole (42) formed in the bearing seat (41) and communicating with the inner cavity of the vessel body (1) and the outside, a sliding bearing (43) disposed in the external hole (42), and a locking component that positions the sliding bearing (43) in the external hole (42) and is detachably fixedly connected to the bearing seat (41). The locking component is located outside the vessel body (1) and one end of the driving source (2) opposite to the stirring shaft (3) extends into the external hole (42) and is detachably connected to the sliding bearing (43). An external fit clearance compensation structure is provided between the outer ring of the sliding bearing (43) and the external hole (42), and an internal fit clearance compensation structure is provided between the inner ring of the sliding bearing (43) and the stirring shaft (3).

2. The bottom bearing external stirring device according to claim 1, characterized in that: The locking assembly includes a bearing flange (44) disposed at the lower end of the bearing housing (41), a plurality of fasteners (45) connecting the bearing flange (44) and the bearing housing (41), and a support sleeve (46) disposed in the external hole (42) and whose two ends respectively abut against the bearing flange (44) and the sliding bearing (43). The support sleeve (46) cooperates with the external hole (42) to restrict the sliding bearing (43) from moving along the axis of the external hole (42).

3. The bottom bearing external stirring device according to claim 1, characterized in that: The external fitting clearance compensation structure includes an external clamping inclined surface (51) disposed on the outer peripheral wall of the sliding bearing (43) and gradually narrowing along the direction from the locking assembly to the stirring shaft (3), and an external fitting inclined surface (52) disposed on the external hole (42) and corresponding to the external clamping inclined surface (51).

4. The bottom bearing external stirring device according to claim 1, characterized in that: The internal clearance compensation structure includes an inner clamping slope (61) disposed on the inner peripheral wall of the sliding bearing (43) and gradually narrowing along the direction from the stirring shaft (3) to the locking assembly, and an inner mating slope (62) disposed on the stirring shaft (3) and corresponding to the inner clamping slope (61).

5. The bottom bearing external stirring device according to claim 1, characterized in that: The external hole (42) is provided with a pulling component that can drive the sliding bearing (43) to move the stirring shaft (3) opposite to it.

6. The bottom bearing external stirring device according to claim 5, characterized in that: The pulling assembly includes a pull ring (71) disposed on one end face of the opposite locking assembly of the sliding bearing (43), a plurality of pull strips (72) fixedly connected to the pull ring (71) and extending downward and passing through the sliding bearing (43), and a pull hole (73) opened in each pull strip (72), the pull hole (73) being located below the sliding bearing (43).

7. The bottom bearing external stirring device according to claim 6, characterized in that: Both the pull ring (71) and the pull bar (72) are embedded in the wall of the external hole (42).

8. The bottom bearing external stirring device according to claim 2, characterized in that: A limiting ring (8) is provided between the support sleeve (46) and the side wall of the external hole (42).

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