Stirring tank bottom bearing mounting structure and stirring tank comprising same

Abstract

The utility model discloses a stirring tank bottom bearing mounting structure and a stirring tank comprising the same, the stirring tank bottom bearing mounting structure comprises a support plate, a lower plate, a connecting sleeve and a non-metal wear-resistant ring, the lower plate is fixed with the support plate, the support plate is fixed with a tank body of the stirring tank, and the connecting sleeve is sleeved on the periphery of a stirring shaft of the stirring tank and is detachably fixed at the bottom of the lower plate. The non-metal wear-resistant ring is positioned between the connecting sleeve and the stirring shaft and is in clearance fit with the stirring shaft; the non-metal wear-resistant ring and the connecting sleeve are provided with a convex shoulder and a groove which are matched with each other, so that the non-metal wear-resistant ring and the connecting sleeve are axially fixed. The connecting sleeve is transferred from the upper part of the lower plate to the lower part of the lower plate, and the non-metal wear-resistant ring is also arranged below the connecting sleeve, so that when the non-metal wear-resistant ring needs to be replaced, the non-metal wear-resistant ring can be taken out from the lower part only by detaching the connecting sleeve without detaching the stirring shaft, and meanwhile, the non-metal wear-resistant ring and the connecting sleeve are axially limited through self structures; snap spring limiting is omitted, and metal filings are prevented from being generated to contaminate materials.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring equipment, in particular to a stirring tank bottom bearing installation structure and a stirring tank comprising the same. Background Art

[0002] In a mixing tank, a bearing mounting structure that matches the agitator shaft clearance is usually fixed on the inner bottom surface of the tank body to position the bottom of the agitator shaft. Conventional bearing mounting structures such as Figure 1 The tank body comprises a support plate 1, a lower plate 2 and a fixed sleeve 3. The lower plate 2 is fixed to the support plate 1. The support plate 1 is fixed to the bottom of the tank body. The fixed sleeve 3 is fixed above the lower plate 2. A polyfluoro sleeve 4 is provided on the inner side of the fixed sleeve 3 to match the clearance of the stirring shaft 6. The outer end of the polyfluoro sleeve 4 is axially limited by a retaining spring 11. The polyfluoro sleeve 4 and the stirring shaft 6 are worn for a long time and need to be replaced regularly. Since the support plate 1 is welded to the bottom of the tank body, it is often necessary to remove the stirring shaft 6 to remove the polyfluoro sleeve 4, which makes maintenance difficult. In addition, the retaining spring 11 made of metal will also have certain wear and tear to produce metal chips, resulting in reduced material quality. Utility Model Content

[0003] In order to solve the technical problem in the prior art that the stirring tank needs to remove the stirring shaft to replace the PTFE sleeve, which is difficult to maintain, the utility model provides a stirring tank bottom bearing installation structure and a stirring tank including the same to solve the above problem.

[0004] The utility model proposes a stirring tank bottom bearing installation structure, comprising a support plate, a lower plate, a connecting sleeve and a non-metallic wear-resistant ring, wherein the lower plate is fixed to the support plate, the support plate is fixed to the tank body of the stirring tank, the connecting sleeve is sleeved on the outer periphery of the stirring shaft of the stirring tank, and can be detachably fixed to the bottom of the lower plate.

[0005] The non-metallic wear-resistant ring is located between the connecting sleeve and the stirring shaft and is in clearance with the stirring shaft; the non-metallic wear-resistant ring and the connecting sleeve have mutually matching bosses and grooves to axially fix the non-metallic wear-resistant ring and the connecting sleeve.

[0006] Furthermore, the non-metallic wear-resistant ring is made of tetrafluoroethylene or nylon.

[0007] Furthermore, the boss is located at the upper end of the non-metallic wear-resistant ring, the groove is located at the upper end of the connecting sleeve, and the boss is clamped between the lower plate and the end surface of the connecting sleeve.

[0008] Furthermore, the boss is an annular structure.

[0009] Furthermore, the lower plate is an annular panel, and there is a radial gap between the lower plate and the stirring shaft.

[0010] Furthermore, the connecting sleeve includes a sleeve located at the outer periphery of the non-metallic wear-resistant ring and a mounting plate located at the upper end of the sleeve, and the mounting plate is fixed to the upper plate by bolts.

[0011] Furthermore, the support plate is a cylindrical rod connecting the upper plate and the tank body, and a plurality of support plates are arranged in a circular array.

[0012] The utility model also provides a stirring tank, comprising a tank body, a stirring shaft and the above-mentioned stirring tank bottom bearing installation structure.

[0013] The beneficial effects of the utility model are:

[0014] The utility model transfers the connecting sleeve from the upper part of the lower plate to the lower part of the lower plate, and the non-metallic wear-resistant ring is also arranged at the lower part. When the non-metallic wear-resistant ring needs to be replaced, the non-metallic wear-resistant ring can be taken out from the lower part by simply disassembling the connecting sleeve, and there is no need to dismantle the stirring shaft. At the same time, the non-metallic wear-resistant ring and the connecting sleeve are axially limited by their own structure, eliminating the need for a retaining spring to limit, thereby avoiding the generation of metal chips to contaminate materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the installation structure of the bottom bearing of the mixing tank in the prior art;

[0017] Figure 2 It is a schematic diagram of the bearing installation structure at the bottom of the mixing tank described in the utility model;

[0018] Figure 3 yes Figure 2 Enlarged view of point a in the middle.

[0019] In the figure, 1, support plate, 2, lower plate, 3, fixed sleeve, 4, PTFE sleeve, 5, tank body, 6, stirring shaft, 7, connecting sleeve, 701, sleeve, 702, mounting plate, 8, non-metallic wear-resistant ring, 9, boss, 10, groove, 11, retaining ring. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] The stirring tank usually includes a tank body 5 and a stirring assembly located in the tank body 5, wherein the stirring assembly includes a stirring shaft 6, a driving motor for driving the stirring shaft 6 to rotate, and a stirring paddle connected to the stirring shaft 6. The driving motor is installed on the top of the tank body 5 and connected to the upper end of the stirring shaft 6. To prevent the bottom of the stirring shaft 6 from being suspended in the air, a bearing mounting structure is often used to position the stirring shaft 6 below, and the bearing mounting structure is fixed to the bottom surface of the tank body 5. The utility model is mainly an improvement on the bearing mounting structure, and the specific improvements are as follows:

[0022] like Figure 2 and Figure 3 As shown, a bearing installation structure for the bottom of a stirring tank includes a support plate 1, a lower plate 2, a connecting sleeve 7 and a non-metallic wear-resistant ring 8. The lower end of the support plate 1 is welded and fixed to the tank body 5, and the upper end is welded and fixed to the lower plate 2. The connecting sleeve 7 is equivalent to the fixed sleeve 3 in the prior art, and is used for detachable fixation with the lower plate 2. The non-metallic wear-resistant ring 8 is equivalent to the polytetrafluoroethylene sleeve 4 in the prior art, and is used to be clamped between the connecting sleeve 7 and the stirring shaft 6, and has a clearance fit with the stirring shaft 6 to achieve positioning of the stirring shaft 6 without affecting the rotation of the stirring shaft 6. The wear-resistant properties of the non-metallic wear-resistant ring 8 can increase its service life. At the same time, its non-metallic properties can reduce friction noise and avoid the generation of metal chips. The non-metallic wear-resistant ring 8 can be made of traditional polytetrafluoroethylene material, for example, the polytetrafluoroethylene sleeve 4 can be directly purchased, or it can be made of wear-resistant materials such as nylon.

[0023] The difference between the present invention and the prior art is that the connection sleeve 7 and the non-metallic wear-resistant ring 8 are arranged below the lower plate 2. Since there is no obstruction of the lower plate 2, when the non-metallic wear-resistant ring 8 needs to be replaced, it is only necessary to remove the connection sleeve 7 and take out the connection sleeve 7 and the non-metallic wear-resistant ring 8 from below the stirring shaft 6. The stirring shaft 6 does not need to be removed, which makes maintenance more convenient. In addition, the non-metallic wear-resistant ring 8 and the connection sleeve 7 have mutually matching bosses 9 and grooves 10 to axially fix the non-metallic wear-resistant ring 8 and the connection sleeve 7. At this time, the metal retaining spring 11 is omitted, and there is no metal part between the fixed connection sleeve 7 and the moving stirring shaft 6. On the one hand, friction noise is avoided, and on the other hand, metal chips generated by friction are avoided to cause material pollution.

[0024] In the specific implementation of the utility model, the boss 9 is located at the upper end of the non-metallic wear-resistant ring 8, the groove 10 is located at the upper end of the connecting sleeve 7, and the boss 9 is sandwiched between the lower plate 2 and the end surface of the connecting sleeve 7. Figure 3 As shown, the boss 9 protrudes outward from the non-metallic wear-resistant ring 8, and the boss 9 and the groove 10 are arranged at the ends of the two components, which is convenient for processing and installation.

[0025] The boss 9 and the groove 10 are structures that match each other. The boss 9 can be distributed in a local area in the circumferential direction, or can be distributed throughout the circumferential direction, that is, it is an annular structure.

[0026] The lower plate 2 is preferably an annular panel, and there is a radial gap between the lower plate 2 and the stirring shaft 6, such as Figure 3 As shown, the radial gap is relatively large, which prevents the stirring shaft 6 from colliding with the lower plate 2 during rotation.

[0027] The connecting sleeve 7 includes a sleeve 701 located on the outer periphery of the non-metallic wear-resistant ring 8 and a mounting plate 702 located on the upper end of the sleeve 701. The mounting plate 702 is fixed to the upper plate by bolts. The sleeve 701 and the mounting plate 702 can be integrally formed or welded. When the sleeve 701 and the mounting plate 702 are fixed, they are horizontally offset to form a groove 10.

[0028] The support plate 1 is a cylindrical rod connecting the upper plate and the tank body 5, and a plurality of support plates 1 are arranged in a circumferential array.

[0029] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0031] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A bearing installation structure for the bottom of a mixing tank, characterized in that: The stirring tank comprises a support plate (1), a lower plate (2), a connecting sleeve (7) and a non-metallic wear-resistant ring (8), wherein the lower plate (2) is fixed to the support plate (1), the support plate (1) is fixed to a tank body (5) of the stirring tank, and the connecting sleeve (7) is sleeved on the outer periphery of the stirring shaft (6) of the stirring tank and is detachably fixed to the bottom of the lower plate (2); The non-metallic wear-resistant ring (8) is located between the connecting sleeve (7) and the stirring shaft (6) and is clearance-matched with the stirring shaft (6); the non-metallic wear-resistant ring (8) and the connecting sleeve (7) have mutually matching bosses (9) and grooves (10) so that the non-metallic wear-resistant ring (8) and the connecting sleeve (7) are axially fixed.

2. The bearing installation structure at the bottom of the mixing tank according to claim 1 is characterized in that: The non-metallic wear-resistant ring (8) is made of tetrafluoroethylene or nylon.

3. The bearing installation structure at the bottom of the mixing tank according to claim 1 is characterized in that: The boss (9) is located at the upper end of the non-metallic wear-resistant ring (8), the groove (10) is located at the upper end of the connecting sleeve (7), and the boss (9) is clamped between the end faces of the lower plate (2) and the connecting sleeve (7).

4. The bearing installation structure at the bottom of the mixing tank according to claim 1, characterized in that: The boss (9) is an annular structure.

5. The bearing installation structure at the bottom of the mixing tank according to claim 1, characterized in that: The lower plate (2) is an annular panel, and there is a radial gap between the lower plate (2) and the stirring shaft (6).

6. The bearing installation structure at the bottom of the mixing tank according to claim 1, characterized in that: The connecting sleeve (7) comprises a sleeve (701) located on the outer periphery of the non-metallic wear-resistant ring (8) and a mounting plate (702) located on the upper end of the sleeve (701), wherein the mounting plate (702) is fixed to the upper plate by bolts.

7. The bearing installation structure at the bottom of the mixing tank according to claim 1, characterized in that: The support plate (1) is a cylindrical rod connecting the upper plate and the tank body (5), and a plurality of support plates (1) are arranged in a circumferential array.

8. A stirring tank, characterized in that: It comprises a tank body (5), a stirring shaft (6) and a stirring tank bottom bearing mounting structure as claimed in any one of claims 1 to 7.

Images