Stirring device for mixing tobacco feed liquid

Abstract

The utility model discloses a stirring device for mixing tobacco feed liquid. The stirring device comprises a motor, a speed reducer, a transmission shaft, a sealing ring, a bearing seat, an oil drainage hole, an oil drainage groove, an impeller, a tank body, a straight bevel gear and the like, a sealing gasket, a bearing gasket and a thrust ball bearing are sequentially installed on a transmission shaft and then assembled into a bearing seat, an angular contact ball bearing, a pressing ring and a bearing cover are sequentially installed, and a pressing cover is installed at the bottom. An oil drainage groove and an oil drainage hole are formed in the bearing seat; the bevel gear transmission technology is used for enabling the reducer rotating shaft to be perpendicular to the axis of the transmission shaft. The two-stage bearings are designed to improve the rotating precision and stability of the rotating shaft of the stirrer, five sealing rings, an oil drainage groove and an oil drainage hole are designed to facilitate inspection and improve the anti-seepage performance of transmission liquid, the bevel gear transmission technology is adopted, it is further ensured that the transmission liquid does not leak to the transmission shaft, tobacco feed liquid does not leak to a tank body and a tobacco production line in the stirring process, and the production efficiency is improved. The harsh tobacco product processing technology is met.

Description

Technical Field

[0001] This utility model belongs to the tobacco industry and relates to tobacco processing technology, specifically to a stirring device for mixing tobacco liquid and a method for preventing leakage of transmission fluid. Background Technology

[0002] In the tobacco processing industry, especially in the tobacco refining process, liquid is sprayed into a certain stage of the refining process. Generally, the liquid is injected into the can through the inlet pipe and mixed, and then sprayed into the tobacco through the outlet pipe to enhance the aroma of the cigarette.

[0003] The injected liquid may be one or more flavorings, flavorings, or other liquids. Since the tank has a large volume, some of which can hold more than 1 ton, the thorough mixing and stirring of the liquid is particularly important. It is also a key means to ensure the homogeneous processing of tobacco shreds. It is difficult to achieve good results by manpower, and it must be done efficiently by machinery.

[0004] In fact, mixing and stirring liquids in tanks is very common and ordinary in the industrial field. The mechanical design is also simple, requiring only the design of a motor, shaft, and stirring blades on the tank lid. Most tobacco liquid mixing is done in this way. However, under normal circumstances, if the motor, reducer, shaft, and stirrer are arranged vertically downwards on the tank lid, the biggest hidden danger is that the transmission fluid or lubricating fluid can seep up through the shaft in the axial direction into the liquid inside the tank, which is not easy to detect or requires frequent replacement of sealing rings. Obviously, this is not the best solution. If a certain functional motor transmission mechanism is used, it can prevent transmission fluid leakage or eliminate the use of transmission fluid, but the power, efficiency, or effect may not meet the process requirements. Alternatively, on a specific production line, such a transmission mechanism with a motor and reducer must be used.

[0005] In power transmission machinery engineering, transmission fluid leakage is not uncommon because the transmission accuracy of drive shafts, such as radial runout and axial movement errors, is difficult to eliminate, and sealing performance varies. The key issue lies in the differences in the severity of the application process environment and technical requirements. For example, if transmission fluid leaks into the cylinder of a car engine, it poses a significant safety hazard. Therefore, in the stringent tobacco product processing technology, it is particularly important to research the safest and most efficient agitator for mixing tobacco slurry and a method for preventing leakage of transmission fluid in the tobacco processing process.

[0006] From a mechanical design perspective, adding multiple sealing rings and oil drain holes inside the bearing housing improves sealing performance and effectively reduces the risk of transmission fluid leakage. Furthermore, by using bevel gear transmission technology with the axis of the motor rotating shaft perpendicular to the axis of the agitator, the problem of transmission fluid seeping into the tank can be theoretically effectively solved.

[0007] To address the aforementioned problems, this utility model is proposed. Utility Model Content

[0008] To address at least one of the aforementioned problems, this invention provides a stirring device for mixing tobacco liquid and a method for preventing leakage of the transmission fluid. The stirring device for mixing tobacco liquid includes a motor, a reducer, a drive shaft, sealing rings, a bearing housing, an oil drain hole, an oil drain groove, an impeller, a tank, and a spur bevel gear. Sealing washers, bearing washers, and thrust ball bearings are sequentially installed on the drive shaft, then assembled into the bearing housing. Angular contact ball bearings, pressure rings, and bearing covers are then sequentially installed, and a pressure cap is installed at the bottom. An impeller is installed on the drive shaft and connected to the reducer and motor. An oil drain groove and an oil drain hole are provided inside the bearing housing. Bevel gear transmission technology ensures that the axis of the reducer shaft and the axis of the drive shaft are perpendicular. This invention features a two-stage bearing design to improve the rotational accuracy and stability of the stirrer shaft. The design of five sealing rings, an oil drain groove, and an oil drain hole facilitates inspection and improves the anti-leakage performance of the transmission fluid. The addition of bevel gear transmission technology further ensures that the transmission fluid does not leak to the drive shaft and that the tobacco liquid does not leak into the tank or the tobacco processing line during mixing, meeting the stringent requirements of tobacco product processing.

[0009] The technical solution of this utility model is as follows:

[0010] The first aspect of this utility model provides a stirring device for mixing tobacco liquid, which includes a motor 1, a reducer 2, a driving coupling 3, a driven coupling 5, a transmission shaft 6, a bearing cover 7, a first sealing ring 7-1, a first screw 8, a bearing seat 9, a second screw 11, an impeller 12, a first nut 13, a fourth screw 15, a mounting plate 16, an angular contact ball bearing 20, a pressure ring 21, a thrust ball bearing 22, a bearing washer 23, an internal sealing ring 24, a sealing washer 25, a second sealing ring 26, a pressing cover 27, a third sealing ring 28, a tank body 30, a tank cover 31, a mounting hole 37, and a mounting cover 38;

[0011] After the sealing washer 25, the built-in sealing ring 24, the bearing washer 23, and the thrust ball bearing 22 are installed sequentially on the drive shaft 6, they are assembled into the bearing housing 9, and then the angular contact ball bearing 20 and the pressure ring 21 are installed sequentially.

[0012] The bearing washer 23 has an annular groove machined inside the through hole for installing the built-in sealing ring 24;

[0013] The second sealing ring 26 is installed in the sealing groove 28-1 designed on the bearing housing 9;

[0014] The bearing cover 7, which has the first sealing ring 7-1 built into it, is installed on the top of the bearing housing 9 by the first screw 8, and the clamping cover 27, which has the third sealing ring 28 built into it, is installed on the bottom of the bearing housing 9 by the fourth screw 15.

[0015] The bearing housing 9 is designed with an oil drain groove 10-1 and an oil drain hole 10 to ensure that when oil accumulates in the bearing housing 9, it can be drained in time through the oil drain hole 10 or to facilitate inspection.

[0016] The impeller 12 is mounted on one end of the transmission shaft 6 via the first nut 13, and the other end is connected to the reducer 2 and the motor 1 via the driven coupling 5 and the driving coupling 3.

[0017] The tank cover 31 at the top of the tank body 30 has the mounting cover 38, the mounting cover 38 has the mounting hole 37, the drive shaft 6 passes through the mounting hole 37 and extends into the tank body 30, and the bearing seat 9 is mounted on the mounting cover 38 by the second screw 11;

[0018] The reducer 2 and the motor 1 are mounted on the tank cover 31 of the tank body 30 via the mounting plate 16.

[0019] Preferably, the mixing device for the mixed tobacco liquid further includes: a connecting screw 4, a third screw 14, and a screw hole 15-1;

[0020] The driven coupling 5 and the driving coupling 3 are connected by connecting screws 4;

[0021] The bearing seat 9 is mounted on the can cover 31 at the top of the can body 30 by a third screw 14, and the third screw 14 engages with the second threaded holes 36 evenly distributed on the mounting cover 38.

[0022] The threaded hole that the fourth screw 15 mates with is the threaded hole 15-1 at the bottom of the bearing housing 9.

[0023] Preferably, the impeller 12 has a rotation diameter Smaller than the diameter of the mounting hole 37 on the mounting cover 38.

[0024] Preferably, when using bevel gear transmission technology, a second spur bevel gear 43 is installed on the rotating shaft 46 of the reducer 2, and a first spur bevel gear 40 is installed on the transmission shaft 6, with a speed ratio of 1:1.

[0025] Preferably, the first spur bevel gear 40 is threaded at the end of the transmission shaft 6, the first pressure block 41 presses the first spur bevel gear 40, and the first nut 42 is used to tighten it; the second spur bevel gear 43 is threaded at the end of the rotating shaft 46, the second pressure block 45 presses the second spur bevel gear 43, and the second nut 44 is used to tighten it.

[0026] The first spur bevel gear 40 and the second spur bevel gear 43 have a module m = 4, a number of teeth of 17, a pressure angle of 20°, a surface width of 16mm, and an installation distance of 40mm.

[0027] Preferably, the lid 31 at the top of the can body 30 has a first input pipe 32, a second input pipe 33, a third input pipe 34 and an output pipe 35. Different types of flavorings and flavorings can be injected into the can body 30 through the first input pipe 32, the second input pipe 33 or the third input pipe 34 respectively, and finally discharged through the output pipe 35.

[0028] Preferably, a first threaded hole 8-1, M6×20, with 4 holes evenly distributed, is designed on the top of the bearing seat 9 for installing the bearing cover 7; and a through hole 14-1, with 8 holes evenly distributed, is designed on the bottom of the bearing seat 9 for connecting with the can cover 31 on the can body 30.

[0029] Preferably, the sealing groove 28-1 is designed in the inner hole where the bearing seat 9 and the drive shaft 6 mate, for installing the second sealing ring 26, and the clamping cover 27 with the third sealing ring 28 inside is designed at its lower part for installation.

[0030] The second aspect of this utility model provides a method for preventing leakage of transmission fluid in a mixing device for mixing tobacco liquid. Using the mixing device for mixing tobacco liquid described in the first aspect of this utility model, the bearing seat 9 is designed with at least five sealing rings: a first sealing ring 7-1, an internal sealing ring 24, a sealing gasket 25, a second sealing ring 26, and a third sealing ring 28, to improve the leakage prevention performance of the transmission fluid; in addition to the above five sealing rings, there is also a sealing gasket 25 and an internal sealing ring 24 of the bearing gasket 23.

[0031] The bearing housing 9 is designed with an oil drain groove 10-1 and an oil drain hole 10 to ensure that when oil accumulates in the bearing housing 9, it can be drained in time through the oil drain hole 10 or to facilitate inspection.

[0032] Preferably, bevel gear transmission technology is used, with a second spur bevel gear 43 installed on the rotating shaft 46 of the reducer 2 and a first spur bevel gear 40 installed on the transmission shaft 6, so that the axis of the transmission shaft 6 is perpendicular to the rotating shaft 46 of the reducer 2, thereby preventing the transmission fluid in the motor of the reducer 2 from entering the transmission shaft 6 and the bearing seat 9, and preventing transmission fluid leakage.

[0033] The agitator and anti-leakage method for the mixed tobacco liquid in this embodiment of the invention have the following beneficial effects:

[0034] 1) In the tobacco processing technology, the thorough mixing and stirring of liquids such as flavorings and flavorings is particularly important. The tank has a large volume and needs to achieve both good stirring effect and safety and reliability. This technical solution can complete this task with high efficiency.

[0035] 2) In general, on tobacco processing lines, motors, reducers, shafts, and agitators are often arranged vertically downwards on the tank lid. Due to the axial movement and radial runout errors of the rotating shaft of common agitators during high-speed rotation, the sealing ring efficiency is easily reduced. Therefore, there is a significant risk that the transmission fluid and lubricating fluid can seep into the liquid inside the tank through the shaft in the axial direction. In this technical solution, two-stage bearings, namely angular contact ball bearings and thrust ball bearings, are designed in the bearing housing to improve the high-speed rotation accuracy and stability of the agitator shaft. A total of 5 seals are designed on the bearing housing, 3 more than the common ones, which improves the performance of the sealing rings. An oil drain groove and oil drain hole are designed below the thrust ball bearing, which not only facilitates equipment inspection but also improves the anti-seepage performance of the transmission fluid and improves the safety and purity of the liquid.

[0036] 3) Due to the extremely strict requirements of the tobacco processing liquid addition process, any process design adopted to improve the purity of the liquid is necessary. On this basis, bevel gear transmission technology can be used to make the axis of the transmission shaft perpendicular to the shaft of the reducer or motor. Theoretically, this prevents the transmission fluid in the reducer or motor from entering the transmission shaft and bearing housing, thus preventing transmission fluid leakage. Under this condition, even if there is bearing lubricant in the bearing housing, the design of 5 sealing rings, oil drain grooves, and oil drain holes can ensure its anti-seepage, thus ensuring the purity of the liquid.

[0037] In general power transmission machinery, to ensure that the transmission fluid does not leak, sealing rings or sealing rings are designed in the mating holes of the bearing end cover and the shaft. Approximately level 2 sealing can meet the technical requirements. However, for the demanding tobacco product processing technology, this technical solution can meet the requirements and has promotional value. Attached Figure Description

[0038] To better understand the above and other objects, features, advantages, and functions of this utility model, reference can be made to the embodiments shown in the accompanying drawings. The same reference numerals in the drawings refer to the same parts. Those skilled in the art should understand that the drawings are intended to schematically illustrate preferred embodiments of this utility model and do not limit the scope of this utility model in any way; the parts in the drawings are not drawn to scale.

[0039] In the attached diagram:

[0040] Figure 1 This is a schematic diagram illustrating the principle of the mixing and stirring device for tobacco liquid and the anti-seepage method for the transmission fluid in this embodiment of the present invention.

[0041] Figure 2This is a schematic diagram of the assembly of the bearing and its accessories on the rotating shaft in an embodiment of this utility model;

[0042] Figure 3 This is a design schematic diagram of the bearing housing according to an embodiment of this utility model;

[0043] Figure 4 This is a utility model Figure 3 AA section view of the bearing housing schematic diagram;

[0044] Figure 5 This is a utility model Figure 3 Top view of the bearing housing schematic diagram;

[0045] Figure 6 This is a utility model Figure 3 Bottom view of the bearing housing schematic diagram;

[0046] Figure 7 This is a schematic diagram of the impeller design according to an embodiment of the present utility model;

[0047] Figure 8 This is a schematic diagram of the design of the drive shaft according to an embodiment of this utility model;

[0048] Figure 9 This is a design schematic diagram of the tank body and its accessories according to an embodiment of this utility model.

[0049] Figure 10 This is a schematic diagram of the structure of a mixing and stirring device for tobacco liquid, which is one of the applications of this utility model.

[0050] Figure 11 This is a schematic diagram of the design of a spur bevel gear according to an embodiment of this utility model;

[0051] Figure 12 This is a schematic diagram of the bevel gear assembly structure according to an embodiment of the present utility model;

[0052] Figure 13 This is a schematic diagram illustrating the application of bevel gear transmission technology in an embodiment of this utility model.

[0053] In the attached diagram: 1. Motor; 2. Reducer; 3. Driven coupling; 4. Connecting screw; 5. Driven coupling; 6. Drive shaft; 7. Bearing cover; 7-1. First sealing ring; 8. First screw; 8-1. First threaded hole; 9. Bearing housing; 10. Oil drain hole; 10-1. Oil drain groove; 11. Second screw; 12. Impeller; 13. First nut; 14. Third screw; 14-1. Through hole; 15. Fourth screw; 15-1. Threaded hole; 16. Mounting plate;

[0054] 20. Angular contact ball bearing; 21. Pressure ring; 22. Thrust ball bearing; 23. Bearing washer; 24. Internal seal ring; 25. Sealing washer; 26. Second seal ring; 27. Pressing cap; 28. Third seal ring; 28-1. Sealing groove;

[0055] 30. Tank body; 31. Tank cover; 32. First input pipe; 33. Second input pipe; 34. Third input pipe; 35. Output pipe; 36. Second threaded hole; 37. Mounting hole; 38. Mounting cover;

[0056] 40. First spur bevel gear; 41. First pressure block; 42. Second nut; 43. Second spur bevel gear; 44. Third nut; 45. Second pressure block; 46. Shaft. Detailed Implementation

[0057] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings. In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, unless otherwise explicitly specified.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] According to national standards and specifications, for mechanical designs and their standard parts, all units of measurement not specified in this application are mm.

[0061] To solve the above problems, and to address at least one aspect of these problems, this utility model provides a stirrer for mixing tobacco liquid and a method for preventing leakage of the transmission fluid. The stirrer for mixing tobacco liquid includes a motor 1, a reducer 2, a driving coupling 3, a connecting screw 4, a driven coupling 5, a transmission shaft 6, a bearing cover 7, a first sealing ring 7-1, a first screw 8, a first threaded hole 8-1, a bearing seat 9, an oil drain hole 10, an oil drain groove 10-1, a second screw 11, an impeller 12, a first nut 13, a third screw 14, a through hole 14-1, a fourth screw 15, a screw hole 15-1, and a mounting plate 16; angular contact ball bearing 20 (GB / T 292-1994), pressure ring 21, thrust ball bearing 22, bearing washer 23, sealing ring 24, sealing washer 25, second sealing ring 26, clamping cover 27, third sealing ring 28, sealing groove 28-1; tank body 30, tank cover 31, first input pipe 32, second input pipe 33, third input pipe 34, output pipe 35, second threaded hole 36, mounting hole 37, mounting cover 38; first spur bevel gear 40, first pressure block 41, second nut 42, second spur bevel gear 43, third nut 44, second pressure block 45, rotating shaft 46, etc.;

[0062] After the sealing washer 25, the built-in sealing ring 24, the bearing washer 23, and the thrust ball bearing 22 are installed sequentially on the drive shaft 6, they are assembled into the bearing housing 9, and then the angular contact ball bearing 20 and the pressure ring 21 are installed sequentially.

[0063] The bearing washer 23 has a 2×2mm annular groove machined inside the through hole for installing the built-in sealing ring 24;

[0064] The second sealing ring 26 is installed in the sealing groove 28-1 designed on the bearing housing 9;

[0065] The bearing cover 7, which has the first sealing ring 7-1 built into it, is installed on the top of the bearing housing 9 by the first screw 8, and the clamping cover 27, which has the third sealing ring 28 built into it, is installed on the bottom of the bearing housing 9 by the fourth screw 15.

[0066] The threaded hole that the fourth screw 15 mates with is the threaded hole 15-1 at the bottom of the bearing seat 9;

[0067] The bearing housing 9 is designed with an oil drain groove 10-1 and an oil drain hole 10 to ensure that when oil accumulates in the bearing housing 9, it can be drained in time through the oil drain hole 10 or to facilitate inspection.

[0068] The impeller 12 is installed at one end of the transmission shaft 6 via the first nut 13, and the other end is connected to the reducer 2 and the motor 1 via the driven coupling 5 and the driving coupling 3. The driven coupling 5 and the driving coupling 3 are connected by connecting screws 4.

[0069] The can cover 31 at the top of the can body 30 has a mounting cover 38, and the mounting cover 38 has a mounting hole 37. The drive shaft 6 passes through the mounting hole 37 and extends into the can body 30. The bearing seat 9 is mounted on the mounting cover 38 by the second screw 11. The bearing seat 9 is mounted on the can cover 31 at the top of the can body 30 by the third screw 14, and the third screw 14 engages with the second threaded holes 36 evenly distributed on the mounting cover 38.

[0070] The reducer 2 and the motor 1 are mounted on the tank cover 31 of the tank body 30 via the mounting plate 16.

[0071] The impeller 12 rotation diameter Smaller than the diameter of the mounting hole 37 on the mounting cover 38.

[0072] When using bevel gear transmission technology, a second spur bevel gear 43 is installed on the rotating shaft 46 of the reducer 2, and a first spur bevel gear 40 is installed on the transmission shaft 6, with a speed ratio of 1:1.

[0073] The first spur bevel gear 40 and the second spur bevel gear 43 have a module m = 4, a number of teeth of 17, a pressure angle of 20°, a surface width of 16mm, and an installation distance of 40mm.

[0074] The can lid 31 at the top of the can body 30 has a first input pipe 32, a second input pipe 33, a third input pipe 34 and an output pipe 35. Different types of flavorings and flavorings can be injected into the can body 30 through the first input pipe 32, the second input pipe 33 or the third input pipe 34 respectively, and finally discharged through the output pipe 35.

[0075] Four threaded holes 8-1, M6×20 (mm), are evenly distributed on the top of the bearing seat 9 for installing the bearing cover 7; eight through holes 14-1 are evenly distributed on the bottom of the bearing seat 9 for connecting with the can cover 31 on the can body 30.

[0076] A sealing groove 28-1 is designed in the inner hole where the bearing housing 9 and the drive shaft 6 mate, for installing the second sealing ring 26, and a clamping cover 27 with the third sealing ring 28 built in it is designed at the lower part.

[0077] The method for preventing leakage of the transmission fluid in the mixing device of the mixed tobacco liquid in this embodiment uses the mixing device of the mixed tobacco liquid described in this embodiment. The bearing seat 9 is designed with a first sealing ring 7-1, an inner sealing ring 24, a sealing gasket 25, a second sealing ring 26, and a third sealing ring 28, for a total of 5 sealing rings, to improve the leakage prevention performance of the transmission fluid.

[0078] The bearing housing 9 is designed with an oil drain groove 10-1 and an oil drain hole 10 to ensure that when oil accumulates in the bearing housing 9, it can be drained in time through the oil drain hole 10 or to facilitate inspection.

[0079] By utilizing bevel gear transmission technology, a second spur bevel gear 43 is installed on the rotating shaft 46 of the reducer 2, and a first spur bevel gear 40 is installed on the transmission shaft 6, so that the axis of the transmission shaft 6 is perpendicular to the rotating shaft 46 of the reducer 2, thereby preventing the transmission fluid in the motor of the reducer 2 from entering the transmission shaft 6 and the bearing seat 9, and preventing transmission fluid leakage.

[0080] like Figure 2 Example: Selected standard parts: angular contact ball bearing 20 is selected from GB / T 292-1994, S7305, with an outer diameter of 62mm, an inner diameter of 25mm, and a width of 17mm; thrust ball bearing 22 is selected from GB / T 301-1995, S1405, with an outer diameter of 60mm, an inner diameter of 25mm, and a width of 24mm.

[0081] Based on this standard bearing component, design bearing housing 9, such as... Figures 2 to 6 Description.

[0082] Four threaded holes 8-1, M6×20 (mm), are designed at the end of the bearing housing 9 for installing the bearing cover 7. Eight through holes 14-1 are designed at the bottom for connecting with the tank cover 31 on the tank body 30.

[0083] An intersecting oil drain groove 10-1 with dimensions of 3×4 (mm) and diameter is designed at the bottom of the inner cavity of bearing housing 9. (mm) Oil drain hole 10.

[0084] A sealing groove 28-1 is designed in the inner hole where the bearing housing 9 and the drive shaft 6 mate, for installing the third sealing ring 28, and a clamping cover 27 for installing the built-in third sealing ring 28 is designed at its lower part.

[0085] like Figure 7 Description of impeller design and impeller rotation diameter The design is 100mm, which can fit into the mounting hole 37 on the mounting cover 38. As a key functional component of the stirrer, a blade design can also be adopted.

[0086] like Figure 8 The drive shaft 6 is designed with a thread at one end to facilitate the installation and clamping of the impeller 12 with the first nut 13, and a keyway at the other end for connecting transmission components such as couplings. Air degassing and shaft shoulders are designed at the bearing mating parts.

[0087] like Figure 9In this example, the cylindrical tube of the tank 30 is designed with a diameter of 1000mm and a height of 1000mm. A mounting cover 38 is designed and welded to the tank cover 31. The mounting hole 37 on the mounting cover 38 has a diameter slightly larger than 100mm. The first input pipe 32, the second input pipe 33, the third input pipe 34, and the output pipe 35 of the sugar liquid are designed on the mounting cover 38.

[0088] like Figures 11 to 13 Description.

[0089] Since the motor, reducer, shaft and agitator are arranged vertically downward on the tank cover, although the bearing seat of the above embodiment is designed with a level 5 sealing ring, there is still a theoretical possibility that the transmission fluid can penetrate into the liquid in the tank through the transmission shaft 6 in the axial direction. This technical solution also provides a second embodiment of power transmission to complete the transmission of motor power to the transmission shaft 6, that is, by using bevel gear transmission technology.

[0090] Although bevel gear transmission has high technical requirements, it can make the axis of the transmission shaft 6 perpendicular to the shaft of the reducer (or motor), which theoretically can prevent the transmission fluid in the reducer from entering the transmission shaft 6 and the bearing housing.

[0091] Second embodiment: A spur bevel gear 43 is installed on the rotating shaft 46 of the reducer 2, and a spur bevel gear 40 is installed on the transmission shaft 6, with a speed ratio of 1:1; the reducer 2 and the motor 1 are installed on the tank cover 31 of the tank body 30 through the mounting plate 16;

[0092] like Figure 11 The first spur bevel gear 40 and the second spur bevel gear 43 are designed according to the national standard (GB). The module is designed as m=4, the number of teeth is 17, the pressure angle is 20°, the surface width is 16mm, and the installation distance is 40mm. The number of teeth can also be adjusted according to the application conditions and different speed ratios.

[0093] like Figure 12 The bevel gear assembly is described above. A threaded first spur bevel gear 40 is designed and installed at the end of the drive shaft 6. A first pressure block 41 presses the first spur bevel gear 40 and is tightened by a second nut 42. A threaded second spur bevel gear 43 is designed and installed at the end of the rotating shaft 46. A second pressure block 45 presses the second spur bevel gear 43 and is tightened by a third nut 44.

[0094] The above are merely preferred embodiments of this utility model and are illustrative rather than restrictive. The structure and connection methods of the components in this utility model can be varied. Any equivalent transformations and improvements made based on the technical solution of this utility model should not be excluded from the protection scope of this utility model.

Claims

1. A stirring device for mixing tobacco liquid, characterized in that, It includes a motor (1), a reducer (2), a drive coupling (3), a driven coupling (5), a transmission shaft (6), a bearing cover (7), a first sealing ring (7-1), a first screw (8), a bearing seat (9), a second screw (11), an impeller (12), a first nut (13), a fourth screw (15), a mounting plate (16), an angular contact ball bearing (20), a pressure ring (21), a thrust ball bearing (22), a bearing washer (23), an internal sealing ring (24), a sealing washer (25), a second sealing ring (26), a pressure cover (27), a third sealing ring (28), a tank body (30), a tank cover (31), a mounting hole (37), and a mounting cover (38); After the sealing washer (25), the built-in sealing ring (24), the bearing washer (23), and the thrust ball bearing (22) are installed sequentially on the drive shaft (6), they are assembled into the bearing housing (9), and then the angular contact ball bearing (20) and the pressure ring (21) are installed sequentially. The bearing washer (23) has an annular groove machined inside the through hole for installing the built-in sealing ring (24); The second sealing ring (26) is installed in the sealing groove (28-1) designed on the bearing housing (9); The bearing cover (7) with the first sealing ring (7-1) is installed on the top of the bearing housing (9) by the first screw (8), and the clamping cover (27) with the third sealing ring (28) is installed on the bottom of the bearing housing (9) by the fourth screw (15). The bearing housing (9) is designed with an oil drain groove (10-1) and an oil drain hole (10); The impeller (12) is mounted on one end of the drive shaft (6) via the first nut (13), and the other end is connected to the reducer (2) and the motor (1) via the driven coupling (5) and the driving coupling (3); The tank cover (31) at the top of the tank body (30) has the mounting cover (38), the mounting cover (38) has the mounting hole (37), the drive shaft (6) passes through the mounting hole (37) and extends into the tank body (30), and the bearing seat (9) is mounted on the mounting cover (38) by the second screw (11); The reducer (2) and the motor (1) are mounted on the tank cover (31) of the tank body (30) via the mounting plate (16).

2. The stirring device for mixing tobacco liquid according to claim 1, characterized in that, The mixing device for the mixed tobacco liquid also includes: a connecting screw (4), a third screw (14), and a screw hole (15-1); The driven coupling (5) and the driving coupling (3) are connected by connecting screws (4); The bearing seat (9) is mounted on the can cover (31) on the top of the can body (30) by a third screw (14), and the third screw (14) is engaged by the second threaded holes (36) evenly distributed on the mounting cover (38); The threaded hole that the fourth screw (15) engages with is the threaded hole (15-1) at the bottom of the bearing housing (9).

3. The stirring device for mixing tobacco liquid according to claim 1, characterized in that, The impeller (12) rotation diameter Smaller than the diameter of the mounting hole (37) on the mounting cover (38).

4. The stirring device for mixing tobacco liquid according to claim 1, characterized in that, When using bevel gear transmission technology, a second spur bevel gear (43) is installed on the shaft (46) of the reducer (2), and a first spur bevel gear (40) is installed on the transmission shaft (6), with a speed ratio of 1:

1.

5. The stirring device for mixing tobacco liquid according to claim 4, characterized in that, The first spur bevel gear (40) is designed to be threaded at the end of the transmission shaft (6), and the first pressure block (41) presses the first spur bevel gear (40) and is tightened by the second nut (42); the second spur bevel gear (43) is designed to be threaded at the end of the rotating shaft (46), and the second pressure block (45) presses the second spur bevel gear (43) and is tightened by the third nut (44). The first spur bevel gear (40) and the second spur bevel gear (43) have a module m = 4, a number of teeth of 17, a pressure angle of 20°, a surface width of 16mm, and an installation distance of 40mm.

6. The stirring device for mixing tobacco liquid according to claim 1, characterized in that, The can lid (31) at the top of the can body (30) has a first input pipe (32), a second input pipe (33), a third input pipe (34) and an output pipe (35). Different types of flavorings and flavorings can be injected into the can body (30) through the first input pipe (32), the second input pipe (33) or the third input pipe (34) respectively, and finally discharged through the output pipe (35).

7. The stirring device for mixing tobacco liquid according to claim 1, characterized in that, Four threaded holes (8-1) are designed on the top of the bearing seat (9) for installing the bearing cover (7); eight through holes (14-1) are designed on the bottom of the bearing seat (9) for connecting with the can cover (31) on the can body (30).

8. The stirring device for mixing tobacco liquid according to claim 1, characterized in that, The sealing groove (28-1) is designed in the inner hole where the bearing housing (9) and the drive shaft (6) mate, for installing the second sealing ring (26), and the clamping cover (27) with the third sealing ring (28) built in is designed at its lower part.

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