Bottom fixing mechanism of large-scale batching tank stirring shaft

Abstract

The utility model discloses a kind of bottom fixing mechanism of large-scale batching pool stirring shaft, be set to batching pool bottom, fixed mechanism includes: base, bearing, bearing sleeve and upper sealing assembly, the base is connected with the batching pool bottom, the bearing sleeve is fixedly connected on the base, the bearing is fixedly set in the bearing sleeve, the upper sealing assembly is set to the top of the bearing sleeve and is equipped with the opening for the stirring shaft to be inserted into the bearing sleeve to be connected with the bearing. The scheme can fix the lower end of stirring shaft, avoid the lower end of stirring shaft to swing when working.

Description

Technical Field

[0001] This utility model relates to the field of batching tanks, specifically a bottom fixing mechanism for the stirring shaft of a large batching tank. Background Technology

[0002] Refractory materials are used in various sectors of the national economy, including steel, non-ferrous metals, glass, cement, ceramics, petrochemicals, machinery, boilers, light industry, power, and military industry. They are essential basic materials for ensuring the production, operation, and technological development of these industries, playing an irreplaceable role in the development of high-temperature industrial production. Batching is one of the many processes in the preparation of refractory materials. During batching, raw materials in a specific ratio are added to a batching tank and mixed.

[0003] Mechanical mixing of materials is a common method that uses a mixing shaft within a batching tank to drive a mixing rod. However, when the batching tank is too large or too deep, the length of the mixing shaft increases. A longer mixing shaft is prone to swaying during rotation, affecting the mixing effect and consequently the uniformity of the material mixing. In severe cases, it can even lead to equipment damage. Utility Model Content

[0004] In order to overcome the defects in the prior art, this utility model provides a bottom fixing mechanism for the stirring shaft of a large batching tank, which is used to solve the above problems.

[0005] This application discloses a bottom fixing mechanism for a stirring shaft in a large batching tank. The fixing mechanism is located at the bottom of the batching tank and includes a base, a bearing, a bearing sleeve, and an upper sealing assembly. The base is connected to the bottom of the batching tank, the bearing sleeve is fixedly connected to the base, the bearing is fixedly disposed inside the bearing sleeve, and the upper sealing assembly is disposed at the top of the bearing sleeve and has an opening for the stirring shaft to pass through the bearing sleeve and connect with the bearing.

[0006] Specifically, the outer wall of the bearing is clearance-fitted with the inner wall of the bearing sleeve, and the bearing sleeve is provided with a threaded hole penetrating its side wall, and a screw for fixing the bearing is provided in the threaded hole.

[0007] Specifically, the bearing is a self-lubricating bearing or a solid oil bearing.

[0008] Specifically, the bearing sleeve is also provided with a fluid inlet penetrating its side wall, the fluid inlet is connected to a pipeline, and the end of the pipeline opposite to the fluid inlet is connected to a fluid source.

[0009] Specifically, the fluid source includes liquids and / or gases.

[0010] Specifically, when the fluid source is a liquid, the fixing mechanism further includes a container, the placement height of which is higher than the highest liquid level of the mixing tank.

[0011] Specifically, the inner wall of the bearing sleeve is provided with a first groove and a second groove. A first retaining ring is provided in the first groove, and a second retaining ring is provided in the second groove. The first retaining ring and the second retaining ring are respectively in contact with the two ends of the bearing.

[0012] Specifically, the upper sealing assembly includes a first O-ring, at least one skeleton oil seal, and a flange. The skeleton oil seal is disposed on the inner wall of the bearing sleeve. The inner wall of the bearing sleeve has a third groove, and a third retaining ring is disposed in the third groove. The flange is connected to the top of the bearing sleeve and together with the third retaining ring, axially limits the skeleton oil seal. The first O-ring is disposed between the flange and the top of the bearing sleeve.

[0013] Specifically, the fixing mechanism further includes a lower sealing assembly, which includes a connecting plate for connecting the base and the bottom of the bearing sleeve and a second O-ring seal disposed between the connecting plate and the bottom of the bearing sleeve.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. When the bottom fixing mechanism of the large batching tank stirring shaft in this embodiment is installed at the bottom of the batching tank and connected to the lower end of the stirring shaft, the lower end of the stirring shaft can be fixed to prevent the lower end of the stirring shaft from swinging during operation.

[0016] 2. In this embodiment, the inner cavity of the bearing sleeve is connected to the fluid source through a pipeline, which can effectively prevent the liquid in the mixing tank from entering the bearing sleeve, thereby preventing the sediment in the mixing tank from entering the bearing sleeve.

[0017] 3. The bearings in this embodiment can be self-lubricating bearings or fixed oil bearings. Compared with conventional ball bearings, self-lubricating bearings or fixed oil bearings do not require lubricating grease. Therefore, grease leakage can be avoided to prevent contamination of materials in the batching tank.

[0018] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the bottom fixing mechanism of the stirring shaft of the large batching tank installed in the batching tank according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the bottom fixing mechanism of the stirring shaft of the large batching tank in this embodiment of the present invention;

[0022] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a cross-sectional view of the connection between the base, bearing, bearing sleeve and upper sealing assembly in an embodiment of this utility model;

[0024] Figure 5 This is a schematic diagram of the bearing sleeve in an embodiment of this utility model.

[0025] The reference numerals in the above figures are as follows: 1. Base; 2. Bearing; 3. Bearing sleeve; 31. Threaded hole; 32. Fluid inlet; 33. First groove; 34. Second groove; 35. Third groove; 4. Upper sealing assembly; 41. First O-ring seal; 42. Skeleton oil seal; 43. Flange; 5. Pipeline; 6. Container; 7. Lower sealing assembly; 71. Connecting plate; 72. Second O-ring seal; 81. First snap ring; 82. Second snap ring; 83. Third snap ring; 10. Stirring shaft; 20. Batching tank. Detailed Implementation

[0026] 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.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "fixing," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0030] Furthermore, the terms "first" and "second" are used only to distinguish between different terms in description and do not have any special meaning.

[0031] Combination Figures 1 to 3 As shown, the bottom fixing mechanism of the large batching tank stirring shaft in this embodiment mainly includes: a base 1, a bearing 2, a bearing sleeve 3, and an upper sealing assembly 4. The base 1 is fixedly connected to the bottom of the batching tank 20 and supports other components; the bearing sleeve 3 is fixedly connected to the base 1; the bearing 2 is disposed inside the bearing sleeve 3, with its outer ring fixedly connected to the inner wall of the bearing sleeve 3 and its inner ring connected to the stirring shaft 10; the upper sealing assembly 4 is connected to the top of the bearing sleeve 3 to prevent sediment (sand, iron filings, and other impurities) in the batching tank 20 from entering the inner cavity of the bearing sleeve 3, thereby causing wear on the bearing 2. The upper sealing assembly 4 also has an opening for the stirring shaft 10 to pass through and connect with the bearing 2 inside the bearing sleeve 3.

[0032] With the above structure, when the bottom fixing mechanism of the large batching tank stirring shaft of this embodiment is installed at the bottom of the batching tank 20 and connected to the lower end of the stirring shaft 10, the lower end of the stirring shaft 10 can be fixed to prevent the lower end of the stirring shaft 10 from swinging during operation.

[0033] like Figure 4 As shown, the outer wall of the outer ring of bearing 2 and the inner wall of bearing sleeve 3 are fitted with a clearance fit. This clearance should be as small as possible while ensuring smooth installation of bearing 2. Bearing sleeve 3 has a threaded hole 31 that penetrates the side wall of bearing sleeve 3. Bearing 2 can be fixed by screwing a screw into the threaded hole 31. Preferably, the bearing 2 in this embodiment can be a self-lubricating bearing or a fixed oil bearing. Compared with conventional ball bearings, self-lubricating bearings or fixed oil bearings do not require lubricating grease, thus preventing grease leakage and contamination of the materials in the mixing tank 20.

[0034] like Figure 5 As shown, to further reduce the risk of sediment in the mixing tank 20 entering the bearing sleeve 3 and causing wear on the bearing 2, the bearing sleeve 3 is also provided with a fluid inlet 32 ​​penetrating its side wall. This fluid inlet 32 ​​is connected to a pipe 5, and the end of the pipe 5 opposite to the fluid inlet 32 ​​is connected to a fluid source. Using this scheme, the fluid source can introduce a fixed amount of fluid into the bearing sleeve 3 through the pipe 5, so that the fluid pressure inside the bearing sleeve 3 is greater than the liquid pressure inside the mixing tank 20. When the upper sealing assembly 4 has good sealing performance, the fluid volume inside the bearing sleeve 3 is constant and will not overflow. When the sealing performance of the upper sealing assembly 4 deteriorates, the fluid inside the bearing sleeve 3 overflows, effectively preventing liquid in the mixing tank 20 from entering the bearing sleeve 3, thereby preventing sediment in the mixing tank 20 from entering the bearing sleeve 3.

[0035] The fluid source mentioned above is a gas or liquid that does not chemically react with the material. Specifically, the fluid source can be compressed air, the mother liquor in the batching tank 20, or other liquids that do not affect the batching tank 20. When the fluid source is a gas, simply adjusting the air inlet valve can prevent sediment from entering the bearing sleeve 3; when the fluid source is a liquid, the liquid can also provide appropriate lubrication for the bearing 2 inside the bearing sleeve 3.

[0036] like Figure 1 and Figure 2 As shown, when the fluid source is liquid, the fixing mechanism in this embodiment also includes a container 6 for holding the liquid. The container 6 is placed outside the mixing tank 20, and its height is higher than the highest liquid level in the mixing tank 20 to ensure that the liquid pressure in the bearing sleeve 3 is higher than the liquid pressure in the mixing tank 20. Preferably, one end of the pipe 5 connected to the bearing sleeve 3 can be inserted into the mixing tank 20 from the bottom of the mixing tank 20 to avoid affecting the rotation of the stirring shaft 10.

[0037] Combination Figure 4and Figure 5 As shown, the inner wall of the bearing sleeve 3 may be provided with a first groove 33 and a second groove 34. A first retaining ring 81 is provided in the first groove 33 and a second retaining ring 82 is provided in the second groove 34. The first retaining ring 81 and the second retaining ring 82 respectively contact the two ends of the bearing 2, thereby axially limiting the bearing 2.

[0038] Continue to refer to Figure 4 and Figure 5 As shown, the upper sealing assembly 4 in this embodiment includes a first O-ring seal 41, two skeleton oil seals 42, and a flange 43. The skeleton oil seals 42 are disposed on the inner wall of the bearing sleeve 3. The inner wall of the bearing sleeve 3 has a third groove 35, and a third retaining ring 83 is disposed within the third groove 35, contacting the end face of the skeleton oil seal 42. The flange 43 is connected to the top of the bearing sleeve 3 and, together with the third retaining ring 83, axially limits the skeleton oil seal 42. The top of the bearing sleeve 3 has a groove, in which the first O-ring seal 41 is accommodated to seal the connection between the bearing sleeve 3 and the flange 43. In other embodiments, the number of skeleton oil seals 42 can be increased or decreased according to actual needs.

[0039] like Figure 3 and Figure 4 As shown, the fixing mechanism in this embodiment also includes a lower sealing assembly 7, which includes a connecting plate 71 and a second O-ring seal 72. The connecting plate 71 is used to connect the bottom of the base 1 and the bearing sleeve 3, and the second O-ring seal 72 is disposed between the connecting plate 71 and the bottom of the bearing sleeve 3 to seal the connection between the two.

[0040] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

Claims

1. A bottom fixing mechanism for the stirring shaft of a large batching tank, disposed at the bottom of the batching tank, characterized in that, include: The assembly includes a base, a bearing, a bearing sleeve, and an upper sealing assembly. The base is connected to the bottom of the mixing tank. The bearing sleeve is fixedly connected to the base. The bearing is fixedly disposed inside the bearing sleeve. The upper sealing assembly is disposed at the top of the bearing sleeve and has an opening for the stirring shaft to pass through the bearing sleeve and connect with the bearing.

2. The bottom fixing mechanism for the stirring shaft of the large batching tank according to claim 1, characterized in that, The outer wall of the bearing is clearance-fitted with the inner wall of the bearing sleeve. The bearing sleeve is provided with a threaded hole that penetrates its side wall, and a screw for fixing the bearing is provided in the threaded hole.

3. The bottom fixing mechanism for the stirring shaft of the large batching tank according to claim 1, characterized in that, The bearing is a self-lubricating bearing or a solid oil bearing.

4. The bottom fixing mechanism for the stirring shaft of the large batching tank according to claim 3, characterized in that, The bearing sleeve is also provided with a fluid inlet that penetrates its side wall. The fluid inlet is connected to a pipeline, and the end of the pipeline opposite to the fluid inlet is connected to a fluid source.

5. The bottom fixing mechanism for the stirring shaft of the large batching tank according to claim 4, characterized in that, The fluid source includes liquids and / or gases.

6. The bottom fixing mechanism for the stirring shaft of the large batching tank according to claim 5, characterized in that, When the fluid source is a liquid, the fixing mechanism further includes a container, the placement height of which is higher than the highest liquid level of the mixing tank.

7. The bottom fixing mechanism for the stirring shaft of the large batching tank according to claim 1, characterized in that, The inner wall of the bearing sleeve is provided with a first groove and a second groove. A first retaining ring is provided in the first groove and a second retaining ring is provided in the second groove. The first retaining ring and the second retaining ring are respectively in contact with the two ends of the bearing.

8. The bottom fixing mechanism for the stirring shaft of the large batching tank according to claim 1, characterized in that, The upper sealing assembly includes a first O-ring, at least one skeleton oil seal, and a flange. The skeleton oil seal is disposed on the inner wall of the bearing sleeve. The inner wall of the bearing sleeve has a third groove, and a third retaining ring is disposed in the third groove. The flange is connected to the top of the bearing sleeve and together with the third retaining ring, axially limits the skeleton oil seal. The first O-ring is disposed between the flange and the top of the bearing sleeve.

9. The bottom fixing mechanism for the stirring shaft of the large batching tank according to claim 1, characterized in that, The fixing mechanism further includes a lower sealing assembly, which includes a connecting plate for connecting the base and the bottom of the bearing sleeve and a second O-ring seal disposed between the connecting plate and the bottom of the bearing sleeve.

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