Spiral bearing mounting structure of centrifugal machine

Abstract

The utility model discloses a centrifuge spiral bearing installation structure, which comprises a belt pulley (3), a small-end half shaft (4), a rotary drum assembly (7), a spiral right shaft neck (9) and a locking nut (1), the belt pulley (3), the small-end half shaft (4) and the rotary drum assembly (7) are fixedly connected, and the belt pulley (3), the small-end half shaft (4) and the rotary drum assembly (7) are all of hollow structures. The spiral right shaft neck (9) is rotationally arranged in an inner cavity formed by the belt pulley (3), the small-end half shaft (4) and the rotary drum assembly (7), the locking nut (1) is in threaded connection with one end of the spiral right shaft neck (9), and the other end of the spiral right shaft neck (9) is connected with the spiral assembly (8). According to the utility model, the relative position of the spiral assembly can be finely adjusted by screwing the locking nut, so that the spiral assembly can be positioned during installation or a gap between the spiral blade and the rotary drum can be adjusted when the spiral blade is abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuge equipment, in particular to a centrifuge spiral bearing installation structure. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate liquids from solid particles or components in a mixture of liquids and liquids. The magnitude of the centrifugal force is determined by the rotation speed, rotation radius, and mass of the material. In order to achieve a better pushing effect, it is particularly important that the gap between the centrifuge's drum and the screw assembly is the same. Therefore, higher requirements are placed on the precise positioning of the screw assembly. Utility Model Content

[0003] The utility model aims to solve the defects in the prior art and provides a centrifuge spiral bearing assembly, which solves the technical problem that the positioning accuracy of the centrifuge spiral assembly is not high.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A centrifuge spiral bearing installation structure includes a pulley, a small end half shaft, a drum assembly, a spiral right shaft neck and a locking nut, characterized in that the pulley, the small end half shaft and the drum assembly are fixedly connected, the pulley, the small end half shaft and the drum assembly are all hollow structures, the spiral right shaft neck is rotatably arranged in an inner cavity formed by the pulley, the small end half shaft and the drum assembly, the locking nut is threadedly connected to one end of the spiral right shaft neck, and the other end of the spiral right shaft neck is connected to the spiral assembly.

[0006] Furthermore, there is a gap between the spiral right journal and the pulley and the small-end half shaft, and a wear-resistant lining is provided on the outer sleeve of the spiral right journal.

[0007] Furthermore, a step structure is provided inside the pulley, a first bearing is provided between the locking nut and the step surface, the first bearing is located between the pulley and the right spiral journal, and the outer ring and inner ring of the first bearing are provided with a bearing liner and a bearing inner liner respectively.

[0008] Furthermore, there is an annulus between the small end half shaft and the spiral right journal, a second bearing is installed in the annulus, and a bearing pressure ring is arranged between the second bearing and the end face of the small end half shaft.

[0009] Furthermore, the other end of the pulley is connected to a pulley sealing cover via bolts.

[0010] Furthermore, an oil filling port is provided on the small end half shaft, the oil filling port is connected to the oil circuit provided on the small end half shaft, the oil circuit is connected to the annular space between the small end half shaft and the spiral journal, and an oil seal is provided in the gap between the spiral right journal and the small end half shaft.

[0011] Furthermore, the pulley sealing cover is provided with a second oil filling port, an oil seal is provided between the pulley sealing cover and the locking nut, and an oil drain port is also provided on the small end half shaft, and the oil drain port and the second oil filling port are both connected with the gap between the spiral right shaft neck and the pulley and the small end half shaft.

[0012] Based on the above technical solution, the following technical effects can be produced:

[0013] 1. The utility model provides a centrifuge spiral bearing installation structure. When assembling the centrifuge or replacing the spiral assembly due to a fault, the worker first installs the spiral assembly by visual inspection, drives the spiral right shaft neck by screwing the locking nut, and then drives the spiral assembly through the spiral right shaft neck to achieve fine adjustment, thereby greatly improving the positioning accuracy of the spiral assembly.

[0014] 2. The utility model has a first bearing in the pulley and a second bearing between the spiral shaft neck and the small end half shaft. Compared with the current method of only setting a bearing between the spiral shaft neck and the small end half shaft, the utility model improves the bearing capacity of the bearing, and because the annular space between the spiral shaft neck and the small end half shaft is smaller, the structural strength of both is improved.

[0015] 3. The right end face of the bearing contacts the right journal of the screw, the outer ring of the left end face contacts the small end half shaft, and the inner ring is tightened by the bearing pressure ring. This facilitates the installation and positioning of the screw assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the oil circuit distribution of the utility model.

[0018] In the figure, 1-locking nut, 2-pulley sealing cover, 3-pulley, 4-small end half shaft, 5-oil seal one, 6-wear-resistant liner, 7-drum assembly, 8-screw assembly, 9-screw right journal, 10-oil filling port one, 11-second bearing, 12-second bearing, 13-oil filling port two, 14-bearing liner, 15-first bearing, 16-bearing inner liner, 17-oil seal two, 18-oil drain port. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, 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, and do not indicate or imply 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.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 As shown, a centrifuge spiral bearing installation structure includes a pulley 3, a small end half shaft 4, a drum assembly 7, a spiral right shaft neck 9 and a locking nut 1, wherein the pulley 3, the small end half shaft 4 and the drum assembly 7 are fixedly connected, and the pulley 3, the small end half shaft 4 and the drum assembly 7 are all hollow structures, and the spiral right shaft neck 9 is rotatably arranged in an inner cavity formed by the pulley 3, the small end half shaft 4 and the drum assembly 7, and the locking nut 1 is threadedly connected to one end of the spiral right shaft neck 9, and the other end of the spiral right shaft neck 9 is connected to the spiral assembly 8.

[0024] According to an embodiment of the utility model, there is a gap between the spiral right journal 9 and the pulley 3 and the small end half shaft 4, and a wear-resistant lining 6 is provided on the outer sleeve of the spiral right journal 9.

[0025] According to one embodiment of the utility model, a step structure is provided inside the pulley 3, a first bearing 15 is provided between the locking nut 1 and the step surface, the first bearing 15 is located between the pulley 3 and the spiral right shaft neck 9, and the outer ring and the inner ring of the first bearing 15 are respectively provided with a bearing liner 14 and a bearing inner liner 16.

[0026] According to one embodiment of the utility model, there is an annulus between the small end half shaft 4 and the spiral right journal 9, a second bearing 11 is installed in the annulus, and a bearing pressure ring 12 is arranged between the second bearing 11 and the end face of the small end half shaft 4.

[0027] According to an embodiment of the utility model, the other end of the pulley 3 is connected to the pulley sealing cover 2 via bolts.

[0028] According to an embodiment of the utility model, the small end half shaft 4 is provided with an oil filling port 10, the oil filling port 10 is connected to the oil circuit provided on the small end half shaft 4, the oil circuit is connected to the annulus between the small end half shaft 4 and the spiral journal 10, and an oil seal 15 is provided in the gap between the spiral right journal 9 and the small end half shaft 4. The pulley sealing cover 2 is provided with an oil filling port 2 13, and an oil seal 2 17 is provided between the pulley sealing cover 2 and the locking nut 1. The small end half shaft 4 is also provided with an oil drain port 18, and the oil drain port 18 and the oil filling port 2 13 are both connected to the gap between the spiral right journal 9 and the pulley 3 and the small end half shaft 4. Solid grease can be added from the oil filling port 10 and the oil filling port 2 13, and the grease enters the first bearing 15 and the second bearing 11 to lubricate them, and also forms a grease layer in the gap between the spiral right journal 9 and the pulley 3 and the small end half shaft 4. When the grease filling is completed, the excess grease will be discharged from the oil drain port 18 . The grease will also be discharged from the oil drain port 18 after it is liquefied and ineffective due to long-term use.

[0029] The utility model provides a centrifuge spiral bearing installation structure. When assembling the centrifuge or replacing the spiral assembly 5 due to a fault, the worker first installs the spiral assembly 5 through visual inspection, and then drives the spiral right shaft neck 9 by screwing the locking nut 8, and then drives the spiral assembly 5 through the spiral right shaft neck 9 to achieve fine adjustment, thereby greatly improving the installation accuracy of the spiral assembly 5. When the spiral blade is worn, the gap between the spiral blade and the drum assembly 7 is adjusted, thereby improving the separation effect of the centrifuge.

[0030] The utility model is described in detail above with reference to the accompanying drawings and embodiments, but the utility model is not limited to the above embodiments, and various changes can be made within the scope of ordinary technicians in the field without departing from the purpose of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope of protection of the utility model.

Claims

1. A centrifuge spiral bearing mounting structure, comprising a pulley (3), a small end half shaft (4), a drum assembly (7), a spiral right journal (9) and a locking nut (1), characterized in that: The pulley (3), the small end half shaft (4) and the drum assembly (7) are fixedly connected; the pulley (3), the small end half shaft (4) and the drum assembly (7) are all hollow structures; the spiral right journal (9) is rotatably arranged in an inner cavity formed by the pulley (3), the small end half shaft (4) and the drum assembly (7); the locking nut (1) is threadedly connected to one end of the spiral right journal (9); and the other end of the spiral right journal (9) is connected to the spiral assembly (8).

2. A centrifuge spiral bearing installation structure according to claim 1, characterized in that: There is a gap between the spiral right journal (9), the belt pulley (3) and the small end half shaft (4), and the outer sleeve of the spiral right journal (9) is provided with a wear-resistant liner (6).

3. A centrifuge spiral bearing installation structure according to claim 2, characterized in that: The pulley (3) is provided with a step structure inside, a first bearing (15) is provided between the locking nut (1) and the step surface, the first bearing (15) is located between the pulley (3) and the spiral right journal (9), and the outer ring and inner ring of the first bearing (15) are provided with a bearing liner (14) and a bearing inner liner (16) respectively.

4. A centrifuge spiral bearing installation structure according to claim 3, characterized in that: An annular space is provided between the small end half shaft (4) and the spiral right journal (9), a second bearing (11) is installed in the annular space, and a bearing pressing ring (12) is provided between the second bearing (11) and the end surface of the small end half shaft (4).

5. A centrifuge spiral bearing installation structure according to claim 4, characterized in that: The other end of the pulley (3) is connected to a pulley sealing cover (2) via bolts.

6. A centrifuge spiral bearing installation structure according to claim 5, characterized in that: The small end half shaft (4) is provided with an oil filling port 1 (10), the oil filling port 1 (10) being connected to an oil circuit provided on the small end half shaft (4), the oil circuit being connected to an annular space between the small end half shaft (4) and the spiral right journal (9), and an oil seal 1 (5) being provided in the gap between the spiral right journal (9) and the small end half shaft (4).

7. A centrifuge spiral bearing installation structure according to claim 6, characterized in that: The pulley sealing cover (2) is provided with a second oil filling port (13), an oil seal (17) is provided between the pulley sealing cover (2) and the locking nut (1), and an oil drain port (18) is also provided on the small end half shaft (4), and the oil drain port (18) and the second oil filling port (13) are both connected to the gap between the spiral right journal (9) and the pulley (3) and the small end half shaft (4).

Images