Stirring shaft mounting structure with adjustable axial height

Abstract

The utility model particularly relates to a stirring shaft mounting structure with an adjustable axial height, a stirring shaft is in linkage connection with a driving mechanism, a connecting plate is fixed at the upper end of a shell of the driving mechanism, the stirring shaft penetrates through the connecting plate and is detachably connected with a connecting sleeve assembly, the connecting plate extends upwards to form a guide stud, and the connecting sleeve assembly is detachably connected with the connecting sleeve assembly. The connecting sleeve assembly is correspondingly provided with a mounting hole matched with the guide stud, and the guide stud penetrates through the mounting hole and fixes the axial heights of the connecting sleeve assembly and the stirring shaft through an upper nut and a lower nut which are located on the upper side and the lower side of the connecting sleeve assembly. The height of the connecting sleeve assembly is adjusted by adjusting the vertical positions of the upper nut and the lower nut on the guide stud, then the axial height of the stirring shaft fixed to the connecting sleeve can be adjusted, and after the stirring shaft is installed and locked, if errors caused by machining and manufacturing or other reasons exist in the stirring shaft, and the distance between a paddle and an end socket is too large or too small, the stirring shaft can be fixed to the connecting sleeve assembly. And adjustment can be performed by adjusting the axial height of the stirring shaft, so that the applicability of the structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering, washing and drying machines, and in particular to a stirring shaft installation structure with adjustable axial height. Background Art

[0002] At present, in the pharmaceutical and food industries, the solid-liquid separation, solid washing, solid drying and solid unloading processes require closed continuous operation, so a filter washing and drying machine is needed. The tank of the filter washing and drying machine is provided with a stirring device, which includes a motor, a reducer and a stirring shaft, and the motor is connected to the stirring shaft through the reducer.

[0003] The utility model patent with the authorization announcement number CN212040258U discloses a stirring shaft mounting structure of a filtering washing and drying machine, wherein the tank body thereof is provided with an upper support plate and a lower support plate, the upper support plate is provided with an upper mounting hole, the lower support plate is provided with a lower mounting hole, one end of the stirring shaft passes through the upper and lower mounting holes and is rotatably connected to the two support plates, an upper mounting groove is provided on the inner wall of the upper mounting hole, a lower mounting groove is provided on the inner wall of the lower mounting hole, and upper and lower sealing rings for forming a sealing fit with the stirring shaft are embedded in the upper and lower mounting grooves, and the sealing rings are interference fit with the mounting grooves, thereby improving the sealing effect between the stirring shaft and the upper and lower mounting plates, but in the actual production and use process of this structure, the axial position of the stirring shaft is fixed, and the distance between the stirring shaft and the paddle connected to the shaft and the mesh surface and the head cannot be adjusted. After the stirring shaft is installed and locked, due to errors such as processing and manufacturing, the distance between the paddle and the head is too large or too small, which will affect the stability of the production operation, so there is an urgent need for a stirring shaft mounting structure with adjustable axial height. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a stirring shaft installation structure with adjustable axial height.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A stirring shaft installation structure with adjustable axial height comprises a stirring shaft and a driving mechanism for driving the stirring shaft to rotate.

[0007] It also includes a connecting sleeve assembly sleeved outside the stirring shaft, and the stirring shaft is linked to the driving end of the driving mechanism.

[0008] A connecting plate is fixed to the upper end of the driving mechanism housing, and the stirring shaft passes through the connecting plate and is detachably connected to the connecting sleeve assembly. A guide stud extends upward from the connecting plate, and the connecting sleeve assembly is correspondingly provided with a mounting hole that cooperates with the guide stud. The guide stud passes through the mounting hole and fixes the axial height of the connecting sleeve assembly and the stirring shaft through upper and lower nuts located on the upper and lower sides of the connecting sleeve assembly.

[0009] Preferably, the connecting sleeve assembly comprises a first connecting portion sleeved on the outer periphery of the stirring shaft, and a second connecting portion connected to the outer periphery of the first connecting portion, and the mounting hole is located on the second connecting portion.

[0010] A first limiting convex portion is extended from the inner circumference of the first connecting portion toward the stirring shaft, and an upper limiting surface and a lower limiting surface are formed on the upper and lower end surfaces of the first limiting convex portion. The stirring shaft is sleeved with a first bearing and a second bearing that are matched with the outer circumference of the stirring shaft and the inner circumference of the first connecting portion along its axial direction. The first bearing and the second bearing are respectively located on the upper and lower sides of the first limiting convex portion.

[0011] A first limiting structure for limiting the downward movement of the second bearing is arranged below the second bearing of the stirring shaft, and a first locking assembly is arranged above the first bearing. The first bearing and the second bearing are respectively pressed against the upper and lower limiting surfaces under the downward force of the first locking assembly and the limiting action of the first limiting structure.

[0012] Preferably, the stirring shaft comprises a first shaft portion and a second shaft portion, the diameter of the first shaft portion is smaller than the diameter of the second shaft portion, and a limiting step for limiting downward movement of the second bearing is formed between the first shaft portion and the second shaft portion.

[0013] Preferably, the first locking assembly includes a first round nut and a first stop washer, the first round nut is threadedly connected to the stirring shaft, and the first stop washer is located between the first round nut and the first bearing and cooperates with the first round nut and the stirring shaft.

[0014] Preferably, an upper bearing cover and a lower bearing cover sleeved on the outer circumference of the stirring shaft are respectively provided on the upper and lower sides of the first connecting part, and the upper and lower bearing covers are respectively connected to the upper and lower ends of the connecting sleeve assembly through the second locking member and the third locking member.

[0015] Preferably, the upper bearing cover has a first lower end surface that fits with the upper end surface of the first connecting portion and a second limiting convex portion that extends in the direction of the first bearing, and the second limiting convex portion is located in the first connecting portion and its outer circumference is adapted to the inner circumference diameter of the first connecting portion;

[0016] The lower bearing cover has a first upper end surface that fits with the lower end surface of the first connecting part and a third limiting protrusion extending toward the second bearing. The third limiting protrusion is located in the first connecting part and its outer periphery is adapted to the inner diameter of the first connecting part.

[0017] Preferably, an oil seal is provided between the lower bearing cover and the stirring shaft.

[0018] Preferably, a limiting groove for limiting radial displacement of the lower bearing cover is provided at the lower end of the second connecting portion near the lower bearing cover.

[0019] Preferably, the connecting sleeve assembly has a reinforcement ring extending up and down around the guide stud.

[0020] Preferably, the upper nut is a double round nut, and the lower nut is a round nut.

[0021] The beneficial effects of the utility model are as follows: by adjusting the upper and lower positions of the upper and lower nuts on the guide studs, the height of the connecting sleeve assembly is adjusted, thereby achieving adjustable axial height of the stirring shaft fixed to the connecting sleeve; after the stirring shaft is installed and locked, if there is an error in the stirring shaft due to processing or other reasons, and the distance between the blade and the head is too large or too small, it can be adjusted by adjusting the axial height of the stirring shaft, thereby improving the applicability of the present structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0023] Figure 1 This is a front cross-sectional view of an embodiment of the utility model;

[0024] Figure 2 It is a top view of an embodiment of the utility model;

[0025] Figure 3 This is a front cross-sectional view of a connecting sleeve assembly according to an embodiment of the utility model;

[0026] Figure 4 This is a front view of the stirring shaft of the embodiment of the utility model;

[0027] Figure 5 This is a front view of a connecting plate according to an embodiment of the utility model;

[0028] Figure 6 This is a top view of the connecting plate of an embodiment of the utility model.

[0029] In the figure, 1, stirring shaft; 2, first connecting part; 3, second connecting part; 4, first bearing; 5, second bearing; 7, upper bearing cover; 8, lower bearing cover; 9, driving mechanism; 11, first shaft; 12, second shaft; 13, limiting step; 21, first limiting convex part; 31, mounting hole; 32, reinforcing ring; 33, limiting groove; 61, first round nut; 62, first retaining washer; 71, first lower end face; 72, first limiting convex part; 81, first upper end face; 82, second limiting convex part; 83, oil seal; 91, connecting plate; 211, upper limit face; 212, lower limit face; 911, guide stud. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0031] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0032] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0033] like Figures 1 to 6 As shown, an axial height adjustable stirring shaft installation structure in an embodiment of the utility model comprises a stirring shaft 1 and a driving mechanism 9 for driving the stirring shaft to rotate.

[0034] It also includes a connecting sleeve assembly sleeved outside the stirring shaft 1,

[0035] A connecting plate 91 is fixed to the upper end of the shell of the driving mechanism 9, and the stirring shaft 1 passes through the connecting plate 91 and is detachably connected to the connecting sleeve assembly. A guide stud 911 extends upward from the connecting plate 91, and the connecting sleeve assembly is correspondingly provided with a mounting hole 31 that cooperates with the guide stud 911. The guide stud 911 passes through the mounting hole 31 and fixes the axial height of the connecting sleeve assembly and the stirring shaft through the upper and lower nuts located on the upper and lower sides of the connecting sleeve assembly.

[0036] By adjusting the upper and lower positions of the upper and lower nuts on the guide studs, the height of the connecting sleeve assembly can be adjusted, thereby achieving adjustable axial height of the stirring shaft fixed to the connecting sleeve. After the stirring shaft is installed and locked, if there is an error in the stirring shaft due to processing or other reasons, the distance between the blade and the head is too large or too small, it can be adjusted by adjusting the axial height of the stirring shaft, thereby improving the applicability of the structure. At the same time, the structure is easy to adjust and has low production cost.

[0037] Among them, the driving mechanism of this embodiment is specifically a reducer, and the stirring shaft rotates under the drive of the reducer, and the two are linked and connected.

[0038] The connecting sleeve assembly includes a first connecting portion 2 sleeved on the outer periphery of the stirring shaft 1, and a second connecting portion 3 connected to the outer periphery of the first connecting portion 2. The mounting hole 31 is located on the second connecting portion 3.

[0039] A first limiting convex portion 21 is extended from the inner circumference of the first connecting portion 2 toward the stirring shaft 1, and an upper limiting surface 211 and a lower limiting surface 212 are formed on the upper and lower end surfaces of the first limiting convex portion 21. The stirring shaft 1 is sleeved with a first bearing 4 and a second bearing 5 that are matched with the outer circumference of the stirring shaft 1 and the inner circumference of the first connecting portion 2 along its axial direction. The first bearing 4 and the second bearing 5 are respectively located on the upper and lower sides of the first limiting convex portion 21.

[0040] The stirring shaft 1 is provided with a first limiting structure for limiting the downward movement of the second bearing 5 below the second bearing 5, and a first locking assembly is provided above the first bearing 4. The first bearing 4 and the second bearing 5 are respectively pressed against the upper and lower limiting surfaces under the downward force of the first locking assembly and the limiting action of the first limiting structure.

[0041] Through the above arrangement, the stirring shaft is not prone to axial displacement during use, which improves the stability of the device production operation; at the same time, the connecting sleeve assembly also has a guiding and limiting function during the installation process, making the structure easy to assemble and improving the portability of the installation. Among them, the first connecting part and the second connecting part can be an integrally formed part or can be assembled and fixed after being separated and processed.

[0042] The stirring shaft 1 includes a first shaft portion 11 and a second shaft portion 12, wherein the diameter of the first shaft portion 11 is smaller than the diameter of the second shaft portion 12, and a limiting step 13 for limiting the downward movement of the second bearing 5 is formed between the first shaft portion 11 and the second shaft portion 12. Through the above arrangement, during the assembly process, the first shaft portion first extends into the connecting sleeve assembly, which has a guiding effect on the extension of the entire stirring shaft, making the assembly more efficient, convenient and stable.

[0043] The first locking assembly includes a first round nut 61 and a first backstop washer 62. The first round nut 61 is threadedly connected to the stirring shaft 1. The first backstop washer 62 is located between the first round nut 61 and the first bearing 4 and matches with the first round nut 61 and the stirring shaft 1. A keyway is processed on the stirring shaft accordingly. During assembly, the inner tongue of the backstop washer is inserted into the keyway on the stirring shaft, and the outer tongue of the backstop washer is embedded in the groove of the round nut. The nut is locked, which can effectively improve the axial limiting effect of the structure.

[0044] The upper and lower sides of the first connecting portion 2 are respectively provided with an upper bearing cover 7 and a lower bearing cover 8 sleeved on the outer periphery of the stirring shaft 1, and the upper and lower bearing covers are respectively connected to the upper and lower ends of the connecting sleeve assembly through the second locking member and the third locking member. Through this arrangement, the interference of the external environment on the position limiting installation structure can be reduced, and the durability of the structure can be improved. In this embodiment, the second locking member and the third locking member are specifically hexagonal head bolts, which are convenient and reliable to install.

[0045] The upper bearing cover 7 has a first lower end surface 71 that fits with the upper end surface of the first connecting portion 2 and a second limiting protrusion 72 that extends toward the first bearing 4. The second limiting protrusion 72 is located inside the first connecting portion 2 and its outer circumference is adapted to the inner circumference of the first connecting portion 2.

[0046] The lower bearing cover 8 has a first upper end surface 81 that fits with the lower end surface of the first connecting part 2 and a third limiting protrusion 82 extending toward the second bearing 5. The third limiting protrusion 82 is located in the first connecting part 2 and its outer periphery is adapted to the inner diameter of the first connecting part 2.

[0047] By setting the second and third limiting protrusions, the upper and lower bearing covers and the connecting sleeve assembly are not easily deviated from the working position during use of the structure, thereby improving the stability of the use of the structure. At the same time, the structure has a guiding and limiting function during the installation process of the upper and lower bearing covers and the connecting sleeve assembly, further improving the convenience of assembly of the structure.

[0048] An oil seal 83 is provided between the lower bearing cover 8 and the stirring shaft 1. Through this arrangement, the interference of the external environment on the installation structure can be reduced.

[0049] The lower end of the second connecting portion 3 near the lower bearing cover 8 has a limiting groove 33 for limiting the radial displacement of the lower bearing cover 8. Through this arrangement, the stability of the connection between the connecting sleeve assembly and the lower bearing cover is improved, and at the same time, the lower bearing cover is not prone to radial displacement during operation, further improving the stability of the device.

[0050] The connecting sleeve assembly is provided with a reinforcing ring 32 extending up and down around the guide stud 911. This arrangement further improves the stability of the connection between the connecting sleeve assembly and the connecting plate.

[0051] The upper nut is a double round nut, and the lower nut is a round nut. This arrangement further improves the stability of the height fixation of the connecting sleeve assembly.

[0052] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A stirring shaft installation structure with adjustable axial height, comprising a stirring shaft (1) and a driving mechanism (9) for driving the stirring shaft (1) to rotate, characterized in that: It also includes a connecting sleeve assembly sleeved outside the stirring shaft (1), the stirring shaft (1) is linked to the driving end of the driving mechanism (9), A connecting plate (91) is fixed to the upper end of the housing of the driving mechanism (9); the stirring shaft (1) passes through the connecting plate (91) and is detachably connected to the connecting sleeve assembly; a guide stud (911) extends upward from the connecting plate (91); the connecting sleeve assembly is correspondingly provided with a mounting hole (31) that cooperates with the guide stud (911); the guide stud (911) passes through the mounting hole (31) and fixes the axial height of the connecting sleeve assembly and the stirring shaft through upper and lower nuts located on upper and lower sides of the connecting sleeve assembly.

2. The stirring shaft installation structure with adjustable axial height according to claim 1, characterized in that: The connecting sleeve assembly comprises a first connecting portion (2) sleeved on the outer circumference of the stirring shaft (1), and a second connecting portion (3) connected to the outer circumference of the first connecting portion (2), wherein the mounting hole (31) is located on the second connecting portion (3). A first limiting convex portion (21) is extended from the inner circumference of the first connecting portion (2) toward the stirring shaft (1), and an upper limiting surface (211) and a lower limiting surface (212) are formed on the upper and lower end surfaces of the first limiting convex portion (21). The stirring shaft (1) is sleeved with a first bearing (4) and a second bearing (5) along its axial direction, which are matched with the outer circumference of the stirring shaft (1) and the inner circumference of the first connecting portion (2). The first bearing (4) and the second bearing (5) are respectively located on the upper and lower sides of the first limiting convex portion (21). The stirring shaft (1) is provided with a first limiting structure below the second bearing (5) for limiting the downward movement of the second bearing (5), and a first locking assembly is provided above the first bearing (4). The first bearing (4) and the second bearing (5) are respectively pressed against the upper and lower limiting surfaces under the downward force of the first locking assembly and the limiting action of the first limiting structure.

3. The stirring shaft installation structure with adjustable axial height according to claim 2, characterized in that: The stirring shaft (1) comprises a first shaft portion (11) and a second shaft portion (12); the diameter of the first shaft portion (11) is smaller than the diameter of the second shaft portion (12); and a limiting step (13) is formed between the first shaft portion (11) and the second shaft portion (12) for limiting the downward movement of the second bearing (5).

4. The stirring shaft installation structure with adjustable axial height according to claim 2, characterized in that: The first locking assembly comprises a first round nut (61) and a first backstop washer (62); the first round nut (61) is threadedly connected to the stirring shaft (1); the first backstop washer (62) is located between the first round nut (61) and the first bearing (4) and is matched with the first round nut (61) and the stirring shaft (1).

5. The stirring shaft installation structure with adjustable axial height according to claim 2, characterized in that: An upper bearing cover (7) and a lower bearing cover (8) sleeved on the outer circumference of the stirring shaft (1) are respectively arranged on the upper and lower sides of the first connecting portion (2), and the upper and lower bearing covers are respectively connected to the upper and lower ends of the connecting sleeve assembly via a second locking member and a third locking member.

6. The stirring shaft installation structure with adjustable axial height according to claim 5, characterized in that: The upper bearing cover (7) comprises a first lower end surface (71) which is in contact with the upper end surface of the first connecting portion (2) and a second limiting protrusion (72) which extends in the direction of the first bearing (4); the second limiting protrusion (72) is located inside the first connecting portion (2) and its outer circumference is matched with the inner circumference diameter of the first connecting portion (2); The lower bearing cover (8) comprises a first upper end surface (81) which is fitted with the lower end surface of the first connecting portion (2) and a third limiting protrusion (82) which extends in the direction of the second bearing (5); the third limiting protrusion (82) is located inside the first connecting portion (2) and its outer circumference is adapted to the inner circumference diameter of the first connecting portion (2).

7. The stirring shaft installation structure with adjustable axial height according to claim 5, characterized in that: An oil seal (83) is provided between the lower bearing cover (8) and the stirring shaft (1).

8. The stirring shaft installation structure with adjustable axial height according to claim 2, characterized in that: The lower end of the second connecting portion (3) near the lower bearing cover (8) has a limiting groove (33) for limiting the radial displacement of the lower bearing cover (8).

9. The stirring shaft installation structure with adjustable axial height according to claim 2, characterized in that: The connecting sleeve assembly has a reinforcing ring (32) extending up and down around the guide stud (911).

10. The stirring shaft installation structure with adjustable axial height according to claim 1, characterized in that: The upper nut is a double round nut, and the lower nut is a round nut.

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