Centrifugal machine bearing seat device

Abstract

The centrifugal machine bearing seat device comprises a bearing seat body, a pressing ring, a bearing and a shaft sleeve, the bearing seat body is provided with a mounting groove, the bearing is coaxially embedded in the mounting groove, the shaft sleeve is coaxially embedded in the inner side of the bearing, the shaft sleeve is used for mounting a rotating shaft, and the pressing ring is connected to the bearing seat body. The pressing rings abut against the surface of one side, in the axis direction of the bearing, of the bearing, connecting holes are formed in the pressing rings, bolts penetrate through the connecting holes and then are in threaded connection with the bearing seat body, and the two pressing rings are symmetrically distributed in the axis direction of the bearing. The bearing seat body is provided with the mounting groove, the bearing is embedded in the mounting groove, and the two pressing rings are connected to the bearing seat body and abut against the two ends of the bearing, so that the bearing is fixed, the influence on the mounting groove in the disassembling and assembling process is reduced, the roundness of the mounting groove of the bearing seat is guaranteed, and the service life of the bearing seat is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of centrifuges, and particularly to a centrifuge bearing seat device. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to accelerate the separation of different materials to be separated. Centrifuges are widely used in the material separation processes of industries such as chemical engineering, pharmaceuticals, and food. As one of the important industrial equipment, their stability and maintenance convenience have attracted much attention. Especially during continuous production, the working efficiency of the centrifuge directly affects the normal operation of the entire production line. Therefore, improving the reliability and maintainability of centrifuge components, especially the core rotating parts such as the bearing seat, has become the focus of research in this field.

[0003] The bearing seats of traditional centrifuges generally adopt a split design, that is, they are composed of two semi-circular mounting seats, with a bearing clamped in the middle and fixed together by fasteners. After multiple disassembly and reassembly, due to increased wear or misalignment between parts, the installation groove becomes out-of-round, affecting the operation effect of the centrifuge. Utility Model Content

[0004] In order to reduce the impact on the installation groove during disassembly and assembly, ensure the roundness of the bearing seat installation groove, and improve the service life of the bearing seat, this application provides a centrifuge bearing seat device.

[0005] A centrifuge bearing seat device provided by this application adopts the following technical solution:

[0006] A centrifuge bearing seat device includes a bearing seat body, a compression ring, a bearing, and a bushing. The bearing seat body is provided with an installation groove, the bearing is coaxially embedded in the installation groove, the bushing is coaxially embedded inside the bearing, the bushing is used for installing a rotating shaft, the compression ring is connected to the bearing seat body, the compression ring abuts against one side surface of the bearing along the bearing axis direction, the compression ring is provided with a connection hole, the connection hole is used for a bolt to pass through and be threadedly connected to the bearing seat body, there are two compression rings, and the two compression rings are symmetrically distributed along the bearing axis direction.

[0007] By adopting the above technical solution, the bearing seat body is provided with an installation groove, the bearing is embedded in the installation groove, and two compression rings are connected to the bearing seat body and abut against both ends of the bearing, realizing the fixation of the bearing, reducing the impact on the installation groove during disassembly and assembly, ensuring the roundness of the bearing seat installation groove, and improving the service life of the bearing seat.

[0008] Preferably, groove is provided on both side surfaces of the bearing housing body along the bearing axis direction. The pressing ring includes a connecting ring and a first abutting ring. The connecting ring is embedded in the groove. One end of the first abutting ring is connected to the side surface of the connecting ring close to the bearing. The other end of the first abutting ring is embedded in the mounting groove. The outer wall of the first abutting ring fits with the groove wall of the mounting groove. The end of the first abutting ring away from the connecting ring abuts tightly against the outer ring of the bearing.

[0009] By adopting the above technical solution, the pressing ring includes a connecting ring and a first abutting ring. The connecting ring is embedded in the groove. The first abutting ring abuts tightly against the outer ring of the bearing. The outer wall of the first abutting ring fits with the groove wall of the mounting groove, improving the connection stability between the pressing ring and the bearing housing body.

[0010] Preferably, a plurality of fixing holes are provided at the bottom of the groove. The plurality of fixing holes are evenly distributed circumferentially around the bearing axis. The number of the connecting holes is the same as that of the fixing holes and they correspond to each other one by one. The bolts pass through the connecting holes and are threadedly connected to the fixing holes.

[0011] By adopting the above technical solution, the connecting holes correspond to the fixing holes, facilitating the threaded connection between the bolts passing through the connecting holes and the fixing holes, realizing the connection between the pressing ring and the bearing housing body, and further realizing the relative fixation between the bearing and the bearing housing body, reducing the possibility of the pressing ring loosening during the operation of the centrifuge, and improving the reliability of the bearing housing.

[0012] Preferably, a positioning groove is provided at the bottom of the groove. A positioning post is connected to the side of the connecting ring close to the bearing. The positioning post is embedded in the positioning groove. A second chamfer is provided on the outer periphery of the end of the positioning post away from the connecting ring.

[0013] By adopting the above technical solution, the second chamfer is used to abut against the groove wall of the positioning groove, guiding the positioning post and facilitating the embedding of the positioning post into the positioning groove, contributing to the alignment of the fixing hole and the connecting hole, and improving the assembly efficiency of the bearing housing device.

[0014] Preferably, first chamfers are provided at the groove walls at both ends of the mounting groove along the bearing axis direction.

[0015] By adopting the above technical solution, the first chamfers are provided. The first chamfers are used to guide the installation of the first abutting ring and the bearing, improving the assembly efficiency of the bearing housing device.

[0016] Preferably, it further includes a cushion ring. A step groove is provided on the outer periphery of the shaft sleeve. The inner ring of the bearing is in interference fit with the groove wall of the step groove. The cushion ring is coaxially embedded in the step groove. The cushion ring abuts against one end of the inner ring of the bearing along the bearing axis direction. There are two cushion rings, and the two cushion rings are symmetrically distributed along the bearing axis direction. A second abutting ring is connected to the side surface of the connecting ring close to the bearing. The end of the second abutting ring away from the connecting ring abuts against the side surface of the cushion ring away from the bearing.

[0017] By adopting the above technical solution, a spacer ring is provided. The spacer ring is sleeved on the outer periphery of the bushing. The two spacer rings respectively abut against both sides of the inner ring of the bearing. The second abutting ring abuts against the surface of the spacer ring away from the bearing, realizing the relative fixation of the inner ring of the bearing and the bearing seat body along the axial direction of the bearing, reducing the possibility of wear of the bearing, and improving the service life of the bearing seat device.

[0018] Preferably, an oil injection assembly is further included. The bearing seat body is provided with a receiving cavity for storing lubricating oil. An oil outlet passage is provided at the wall of the receiving cavity. The oil injection assembly includes a heat expansion block, a piston block, a reset member and a valve. The piston block is slidably embedded in the receiving cavity. The heat expansion block is connected to the bearing seat body and is used to push the piston block to slide. The reset member is connected between the piston block and the bearing seat body, and the reset member makes the piston block have a tendency to move away from the oil outlet passage. The valve is embedded in the oil outlet passage. The first abutting ring is provided with an oil injection port, and the oil injection port is communicated with the oil outlet passage. One end of the oil injection port away from the oil outlet passage faces the balls of the bearing.

[0019] By adopting the above technical solution, a receiving cavity is provided, and lubricating oil is stored in the receiving cavity. When the centrifuge is not running, the pressures on both sides of the valve are the same and the valve is in a closed state. When the centrifuge is running, the temperature in the installation groove rises, the heat expansion block expands due to heat, pushes the sliding block to slide, squeezes the lubricating oil in the receiving cavity, so that the pressure on the side of the valve close to the receiving cavity rises, squeezes the valve, and makes the valve open. The lubricating oil in the receiving cavity is transported to the balls of the bearing through the oil outlet passage and the oil injection port to lubricate the bearing, reduce the heat generated during the operation of the bearing, and improve the service life of the bearing seat device.

[0020] Preferably, a plurality of oil outlet passages are provided. The plurality of oil outlet passages are circumferentially spaced apart around the axis of the bearing. The number of valves is the same as and corresponds to the number of oil outlet passages one by one. A ring groove is provided on the outer wall of the first abutting ring. The ring groove communicates the oil outlet passage and the oil injection port. A plurality of oil injection ports are provided. The plurality of oil injection ports are circumferentially spaced apart around the axis of the bearing.

[0021] By adopting the above technical solution, a ring groove is provided on the outer wall of the first abutting ring. A plurality of oil outlet passages transport the lubricating oil to the ring groove, and then the ring groove transports the lubricating oil to each oil injection port, realizing oil injection lubrication at various parts of the bearing and improving the lubrication effect on the bearing.

[0022] Preferably, the oil injection port is tapered in a direction away from the ring groove along the axis of the oil injection port.

[0023] By adopting the above technical solution, the fuel injection port is tapered towards the side away from the annular groove along the axis of the fuel injection port, so that the cross-sectional area of the side of the fuel injection port away from the annular groove is larger than the cross-sectional area of the side of the fuel injection port close to the annular groove. When the lubricating oil of the same volume is transported along the axis of the fuel injection port, the pressure of the lubricating oil increases, which helps to accurately inject the lubricating oil onto the bearing surface, improve the lubrication effect on the bearing, and reduce the waste of lubricating oil.

[0024] Preferably, there are two accommodating cavities, and the two accommodating cavities respectively correspond to two pressing rings. The number of piston blocks and reset components is the same as the number of accommodating cavities and they correspond one by one. The oil injection assembly further includes a pushing block. The oil outlet channel is located at the side wall of the accommodating cavity away from the other accommodating cavity. One end of the pushing block is connected to the heat-expanded block, and the other end of the pushing block is provided with a third chamfer for the piston block to abut against.

[0025] By adopting the above technical solution, two independent accommodating cavities are provided. When the heat-expanded block is heated, it pushes the pushing block to slide. The third chamfer abuts against the two piston blocks, pushing the piston blocks to slide, respectively squeezing the lubricating oil in the two accommodating cavities, and spraying oil on both sides of the bearing respectively. When any one of the accommodating cavities is damaged, the bearing can still be lubricated, improving the service life of the bearing seat device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The bearing seat body is provided with an installation groove, the bearing is embedded in the installation groove, and two pressing rings are connected to the bearing seat body and abut against both ends of the bearing, realizing the fixation of the bearing, reducing the influence on the installation groove during the disassembly and assembly process, ensuring the roundness of the installation groove of the bearing seat, and improving the service life of the bearing seat.

[0028] 2. A gasket ring is provided, and the gasket ring is sleeved on the outer periphery of the bushing. The two gasket rings respectively abut against both sides of the inner ring of the bearing, and the second abutting ring abuts against the surface of the gasket ring away from the bearing, realizing the relative fixation of the inner ring of the bearing and the bearing seat body along the axial direction of the bearing, reducing the possibility of wear of the bearing, and improving the service life of the bearing seat device.

[0029] 3. An accommodating cavity is provided, and lubricating oil is stored in the accommodating cavity. When the centrifuge is not running, the pressures on both sides of the valve are the same and the valve is in a closed state. When the centrifuge is running, the temperature in the installation groove rises, the heat-expanded block expands due to heat, pushes the sliding block to slide, squeezes the lubricating oil in the accommodating cavity, so that the pressure on the side of the valve close to the accommodating cavity increases, squeezes the valve, and makes the valve open. The lubricating oil in the accommodating cavity is transported to the rolling balls of the bearing through the oil outlet channel and the fuel injection port, lubricating the bearing, reducing the heat generated during the operation of the bearing, and improving the service life of the bearing seat device. Description of the Drawings

[0030] Figure 1 It is a schematic explosion structure diagram of a centrifuge bearing housing device.

[0031] Figure 2 It is a cross-sectional view of a centrifuge bearing housing device.

[0032] Figure 3 It is Figure 2 an enlarged view of part A in

[0033] Figure 4 It is Figure 2 an enlarged view of part B in

[0034] Explanation of reference numerals:

[0035] 1. Bearing housing body; 11. Installation groove; 12. Groove; 13. Fixing hole; 14. Positioning groove; 15. First chamfer; 16. Accommodating cavity; 17. Oil outlet channel; 18. Mounting seat; 181. Mounting hole; 19. Convex ring; 110. Oil filling port; 111. Oil filling channel; 112. Oil drain port; 113. Oil drain channel; 114. Slide groove; 115. Communication groove; 116. Connection groove; 117. Embedded groove;

[0036] 2. Bearing;

[0037] 3. Compression ring; 31. Connection ring; 311. Connection hole; 32. First abutting ring; 321. Oil injection port; 322. Ring groove; 33. Positioning post; 331. Second chamfer; 34. Second abutting ring;

[0038] 4. Bush; 41. Step groove;

[0039] 5. Spacer ring;

[0040] 6. Oil injection assembly; 61. Heat expansion block; 62. Piston block; 621. Piston plate; 622. Driving block; 6221. Fourth chamfer; 63. Reset part; 64. Valve; 65. Pushing block; 651. Third chamfer; 66. Sealing cover; 67. Sealing bolt. Detailed implementation manners

[0041] The following further elaborates on this application with reference to the accompanying drawings.

[0042] Refer to Figure 1, an embodiment of the present application discloses a centrifuge bearing housing device including a bearing housing body 1 and a bearing 2. The bearing housing body 1 is provided with an installation groove 11, and the bearing 2 is coaxially embedded in the installation groove 11. The outer wall of the outer ring of the bearing 2 is in contact with the wall of the installation groove 11. The outer periphery of the bearing housing body 1 is fixedly connected with a mounting seat 18. The length direction of the mounting seat 18 is perpendicular to the axis direction of the installation groove 11. The mounting seat 18 is provided with a plurality of mounting holes 181. The plurality of mounting holes 181 are divided into two groups, and the two groups of mounting holes 181 are symmetrically distributed along the length direction of the mounting seat 18. The mounting holes 181 are used for bolts to pass through and be threadedly connected to an external frame.

[0043] Referring to Figure 1 and Figure 2 , a centrifuge bearing housing device further includes two pressing rings 3, and the two pressing rings 3 are symmetrically distributed along the axis direction of the bearing 2. On both side surfaces of the bearing housing body 1 along the axis direction of the bearing 2, there are respectively provided grooves 12. The grooves 12 communicate with the installation groove 11, and the axis of the grooves 12 coincides with the axis of the installation groove 11. At the wall of the installation groove 11 near one end of the grooves 12, there is provided a first chamfer 15.

[0044] The pressing ring 3 includes a connecting ring 31 and a first abutting ring 32. One end of the first abutting ring 32 is coaxially embedded in the installation groove 11, and the outer wall of the first abutting ring 32 is in contact with the wall of the installation groove 11. One end of the first abutting ring 32 extending into the installation groove 11 abuts against one side surface of the outer ring of the bearing 2 along the axis direction of the bearing 2. The connecting ring 31 is coaxially fixedly connected to one end of the first abutting ring 32 away from the bearing 2. The connecting ring 31 is coaxially embedded in the groove 12. One side surface of the connecting ring 31 close to the first abutting ring 32 is in contact with the bottom of the groove 12, and the outer wall of the connecting ring 31 is in contact with the wall of the groove 12.

[0045] On one side surface of the connecting ring 31 close to the first abutting ring 32, a plurality of positioning columns 33 are fixedly connected. The axis of the positioning columns 33 is parallel to the axis direction of the axis. The plurality of positioning columns 33 are circumferentially and uniformly distributed around the axis of the bearing 2. In this embodiment, there are three positioning columns 33. On the bottom of the groove 12, there is provided a positioning groove 14. The number of the positioning grooves 14 is the same as that of the positioning columns 33 and they correspond one by one. The positioning grooves 14 are used for the positioning columns 33 to be embedded. On the outer periphery of one end of the positioning column 33 away from the connecting ring 31, there is provided a second chamfer 331, and the second chamfer 331 is used for the wall of the positioning groove 14 to abut against. Coaxially provided at the bottom of the positioning groove 14 is a fixing hole 13. The connecting ring 31 is provided with a connecting hole 311. The connecting hole 311 sequentially penetrates through the connecting ring 31 and the positioning column 33 along the axis direction of the connecting hole 311. The axis of the connecting hole 311 coincides with the axis of the positioning column 33. The number of the connecting holes 311 is the same as that of the fixing holes 13 and they correspond one by one. The connecting holes 311 are used for bolts to pass through and be threadedly connected to the fixing holes 13.

[0046] A centrifuge bearing seat device further includes a spacer ring 5 and a sleeve 4. The sleeve 4 is coaxially embedded inside the bearing 2, and the inner side of the sleeve 4 is for installing a rotating shaft. A stepped groove 41 is provided on the outer periphery of the sleeve 4, and the bearing 2 is embedded in the stepped groove 41. The inner ring of the bearing 2 is in interference fit with the groove wall of the stepped groove 41. The spacer ring 5 is coaxially sleeved on the outer periphery of the sleeve 4. The inner wall of the spacer ring 5 is in contact with the groove wall of the stepped groove 41. The number of spacer rings 5 is the same as and corresponds one-to-one with the number of pressing rings 3. One end of the spacer ring 5 in the axial direction of the bearing 2 abuts against the inner ring of the bearing 2. The pressing ring 3 further includes a second abutting ring 34. One end of the second abutting ring 34 is coaxially and fixedly connected to the surface of the connecting ring 31 close to the first abutting ring 32. The inner wall of the second abutting ring 34 is flush with the inner wall of the connecting ring 31. The end of the second abutting ring 34 away from the connecting ring 31 abuts against the surface of the spacer ring 5 away from the bearing 2. In this embodiment, the surface of any spacer ring 5 away from the bearing 2 abuts against the bottom of the stepped groove 41.

[0047] Referring to Figure 2 and Figure 3 , a centrifuge bearing seat device further includes an oil injection assembly 6. The bearing seat body 1 is provided with accommodation cavities 16. The number of accommodation cavities 16 is the same as and corresponds one-to-one with the number of first abutting rings 32. In this embodiment, the accommodation cavities 16 are annular, and the axis of the accommodation cavities 16 coincides with the axis of the installation groove 11. A convex ring 19 is fixedly connected to the outer wall of the bearing seat body 1 on the side away from the mounting seat 18. An oil filling port 110 is coaxially provided on the convex ring 19. The oil injection assembly 6 includes a sealing cover 66, and the sealing cover 66 is connected to the convex ring 19 and covers the oil filling port 110. In this embodiment, the sealing cover 66 is coaxially and threadedly connected to the end of the convex ring 19 away from the bearing seat body 1. An oil filling channel 111 is provided on the outer cavity wall of the accommodation cavity 16, and the oil filling channel 111 communicates the oil filling port 110 and the accommodation cavity 16.

[0048] Referring to Figure 2 and Figure 4 , the oil injection assembly 6 further includes a sealing bolt 67. The mounting seat 18 is provided with an oil drain port 112, and the sealing bolt 67 is connected to the mounting seat 18 and covers the oil drain port 112. In this embodiment, the rod portion of the sealing bolt 67 is coaxially embedded in the oil drain port 112. An oil drain channel 113 is provided on the outer cavity wall of the accommodation cavity 16, and the oil drain channel 113 communicates the accommodation cavity 16 and the oil drain port 112.

[0049] Referring to Figure 4, an oil outlet channel 17 is provided at the cavity wall on one side of the accommodating cavity 16 away from the other accommodating cavity 16. A plurality of oil outlet channels 17 are provided, and the plurality of oil outlet channels 17 are circumferentially spaced apart around the axis of the installation groove 11. In this embodiment, four oil outlet channels 17 are provided, and the four oil outlet channels 17 are circumferentially and evenly distributed around the axis of the installation groove 11. The oil injection assembly 6 further includes valves 64. The number of valves 64 is the same as and corresponds one-to-one with the number of oil outlet channels 17, and the valves 64 are embedded in the oil outlet channels 17. A ring groove 322 is provided on the outer wall of the first abutting ring 32, and the ring groove 322 communicates with the oil outlet channel 17. An oil injection port 321 is provided at the bottom of the ring groove 322. The other end of the oil injection port 321 faces the ball of the bearing 2. The oil injection port 321 is tapered toward the side away from the ring groove 322 along the axis direction of the oil injection port 321. A plurality of oil injection ports 321 are provided, and the plurality of oil injection ports 321 are circumferentially spaced apart around the axis of the installation groove 11. In this embodiment, twelve oil injection ports 321 are provided, and the twelve oil injection ports 321 are circumferentially and evenly distributed around the axis of the installation groove 11.

[0050] The oil injection assembly 6 further includes a piston block 62, a pushing block 65, a reset member 63, and a heat expansion block 61. There are sliding grooves 114 provided between the two accommodating cavities 16. The number of the sliding grooves 114 is four, and the four sliding grooves 114 are circumferentially and evenly distributed around the axis of the installation groove 11. A communication groove 115 is provided at one side wall of the sliding groove 114 close to the installation groove 11, and the communication groove 115 is communicated with the installation groove 11. The number of the heat expansion blocks 61 and the pushing blocks 65 is the same as that of the sliding grooves 114 and they correspond to each other one by one. The pushing block 65 is slidably embedded in the sliding groove 114, and the sliding direction of the pushing block 65 is parallel to the radial direction of the bearing 2. The heat expansion block 61 is embedded in the sliding groove 114, and the heat expansion block 61 is used to drive the pushing block 65 to slide. In this embodiment, one end of the heat expansion block 61 is fixedly connected to one side wall of the sliding groove 114 close to the communication groove 115, and the other end of the heat expansion block 61 is fixedly connected to one side surface of the pushing block 65 close to the communication groove 115. The number of the piston blocks 62 is the same as that of the accommodating cavities 16 and they correspond to each other one by one. The piston block 62 includes a piston plate 621 and a driving block 622. The piston plate 621 is slidably embedded in the accommodating cavity 16, and the sliding direction of the piston plate 621 is parallel to the axis direction of the installation groove 11. The side wall of the piston plate 621 is attached to the wall of the accommodating cavity 16. The number of the driving blocks 622 is the same as that of the pushing blocks 65 and they correspond to each other one by one. A connecting groove 116 is provided at one side wall of the accommodating cavity 16 close to the sliding groove 114, and the connecting groove 116 is communicated with the sliding groove 114. One end of the driving block 622 is fixedly connected to one side surface of the piston plate 621 close to the sliding groove 114, and the other end of the driving block 622 extends into the sliding groove 114 after passing through the connecting groove 116. Two third chamfers 651 are provided at one end of the pushing block 65 away from the heat expansion block 61, and the two third chamfers 651 are located on both sides of the pushing block 65 along the axis direction of the installation groove 11. A fourth chamfer 6221 is provided at one end of the driving block 622 away from the piston plate 621. The fourth chamfer 6221 is embedded in one side surface of the driving block 622 close to the installation groove 11, and the fourth chamfer 6221 is attached to the third chamfer 651. The number of the reset members 63 is the same as that of the driving blocks 622 and they correspond to each other one by one. An embedding groove 117 is provided at one side wall of the connecting groove 116 away from the sliding groove 114. The reset member 63 is connected between the piston plate 621 and the bearing seat body 1, and the reset member 63 makes the piston plate 621 have a tendency to move away from the oil outlet channel 17. In this embodiment, the reset member 63 adopts a spring. One end of the reset member 63 is connected to one side surface of the piston plate 621 close to the driving block 622, and the other end of the reset member 63 is connected to one side wall of the embedding groove 117 close to another piston plate 621.

[0051] The implementation principle of a centrifuge bearing seat device in an embodiment of this application is as follows: During assembly, the bearing 2 is embedded in the installation groove 11. First, the bushing 4 is passed through a spacer ring 5, and then the bushing 4 is in interference fit with the inner ring of the bearing 2, so that the inner ring of the bearing 2 abuts against the spacer ring 5. The connecting ring 31 on this side is embedded in the groove 12, so that the positioning post 33 is embedded in the positioning groove 14, the first abutting ring 32 abuts against the outer ring of the bearing 2, and the second abutting ring 34 abuts against the surface of the spacer ring 5 away from the bearing 2. The bolt is passed through the connecting hole 311 and then threadedly connected to the fixing hole 13 to realize the fixed connection between the pressing ring 3 and the bearing seat body 1.

[0052] Another spacer ring 5 is sleeved on the outer periphery of the bushing 4, so that the spacer ring 5 abuts against the other surface of the inner ring of the bearing 2. Another connecting ring 31 is embedded in the groove 12, so that the first abutting ring 32 abuts against the other surface of the outer ring of the bearing 2. The relative fixation between the pressing ring 3 and the bearing seat body 1 is realized through bolts, and the fixed connection between the bearing 2 and the bearing seat body 1 is realized.

[0053] During use, the bearing 2 is subject to friction, the temperature rises, the heat expansion block 61 expands due to heat, pushes the push block 65 to slide, the third chamfer 651 abuts against the fourth chamfer 6221, pushes the driving block 622 to slide, drives the piston plate 621 to slide against the elastic force of the reset member 63, the piston plate 621 squeezes the lubricating oil in the accommodating cavity 16, so that the pressure on the side of the valve flap 64 close to the accommodating cavity 16 increases, the lubricating oil squeezes the valve flap 64, so that the valve flap 64 opens, and the lubricating oil enters the annular groove 322 through the oil outlet channel 17 and is distributed in each oil injection port 321 through the annular groove 322 to realize the lubrication of the bearing 2.

[0054] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A centrifuge bearing seat device, characterized in that: It includes a bearing seat body (1), a compression ring (3), a bearing (2) and a bushing (4); the bearing seat body (1) is provided with an installation groove (11); the bearing (2) is coaxially embedded in the installation groove (11); the bushing (4) is coaxially embedded inside the bearing (2); the bushing (4) is used for installing a rotating shaft; the compression ring (3) is connected to the bearing seat body (1); the compression ring (3) abuts against one side surface of the bearing (2) along the axis direction of the bearing (2); the compression ring (3) is provided with a connection hole (311); the connection hole (311) is used for a bolt to pass through and be threadedly connected to the bearing seat body (1); there are two compression rings (3); the two compression rings (3) are symmetrically distributed along the axis direction of the bearing (2).

2. The centrifuge bearing housing device according to claim 1, characterized in that: On both side surfaces of the bearing seat body (1) along the axis direction of the bearing (2), there are respectively provided grooves (12); the compression ring (3) includes a connection ring (31) and a first abutting ring (32); the connection ring (31) is embedded in the groove (12); one end of the first abutting ring (32) is connected to the side surface of the connection ring (31) close to the bearing (2); the other end of the first abutting ring (32) is embedded in the installation groove (11); the outer wall of the first abutting ring (32) fits with the groove wall of the installation groove (11); the end of the first abutting ring (32) far from the connection ring (31) abuts against the outer ring of the bearing (2).

3. The centrifuge bearing housing device according to claim 2, characterized in that: On the bottom of the groove (12), there are provided several fixing holes (13); the several fixing holes (13) are evenly distributed circumferentially around the axis of the bearing (2); the number of the connection holes (311) is the same as that of the fixing holes (13) and they correspond one by one; the bolt passes through the connection hole (311) and is threadedly connected in the fixing hole (13).

4. The centrifuge bearing housing device according to claim 3, characterized in that: On the bottom of the groove (12), there is provided a positioning groove (14); on the side surface of the connection ring (31) close to the bearing (2), there is connected a positioning post (33); the positioning post (33) is embedded in the positioning groove (14); on the outer periphery of the end of the positioning post (33) far from the connection ring (31), there is provided a second chamfer (331).

5. The centrifuge bearing housing device according to claim 2, wherein: On the groove walls at both ends of the installation groove (11) along the axis direction of the bearing (2), there are provided first chamfers (15).

6. The centrifuge bearing housing device according to claim 2, characterized in that: It further includes a spacer ring (5); on the outer periphery of the bushing (4), there is provided a step groove (41); the inner ring of the bearing (2) is in interference fit with the groove wall of the step groove (41); the spacer ring (5) is coaxially embedded in the step groove (41); the spacer ring (5) abuts against one end of the inner ring of the bearing (2) along the axis direction of the bearing (2); there are two spacer rings (5); the two spacer rings (5) are symmetrically distributed along the axis direction of the bearing (2); on the side surface of the connection ring (31) close to the bearing (2), there is connected a second abutting ring (34); the end of the second abutting ring (34) far from the connection ring (31) abuts against the side surface of the spacer ring (5) far from the bearing (2).

7. The centrifuge bearing housing device according to claim 2, characterized in that: It further includes an oil injection assembly (6); the bearing seat body (1) is provided with a receiving cavity (16); the receiving cavity (16) is used for storing lubricating oil; an oil outlet channel (17) is provided at the wall of the receiving cavity (16); the oil injection assembly (6) includes a heat expansion block (61), a piston block (62), a reset member (63) and a valve flap (64); the piston block (62) is slidably embedded in the receiving cavity (16); the heat expansion block (61) is connected to the bearing seat body (1); the heat expansion block (61) is used to push the piston block (62) to slide; the reset member (63) is connected between the piston block (62) and the bearing seat body (1); the reset member (63) makes the piston block (62) tend to be away from the oil outlet channel (17); the valve flap (64) is embedded in the oil outlet channel (17); the first abutting ring (32) is provided with an oil injection port (321); the oil injection port (321) is communicated with the oil outlet channel (17); one end of the oil injection port (321) away from the oil outlet channel (17) faces the balls of the bearing (2).

8. The centrifuge bearing housing device according to claim 7, characterized in that: A plurality of the oil outlet channels (17) are provided; the plurality of oil outlet channels (17) are circumferentially and spaced apart around the axis of the bearing (2); the number of the valve flaps (64) is the same as and corresponds to the number of the oil outlet channels (17) one by one; a ring groove (322) is provided at the outer wall of the first abutting ring (32); the ring groove (322) communicates the oil outlet channel (17) and the oil injection port (321); a plurality of the oil injection ports (321) are provided; the plurality of oil injection ports (321) are circumferentially and spaced apart around the axis of the bearing (2).

9. The centrifuge bearing housing device according to claim 8, characterized in that: The oil injection port (321) is tapered towards the side away from the ring groove (322) along the axis of the oil injection port (321).

10. The centrifuge bearing housing device according to claim 7, wherein: Two of the receiving cavities (16) are provided; the two receiving cavities (16) respectively correspond to two pressing rings (3); the number of the piston blocks (62) and the reset members (63) is the same as and corresponds to the number of the receiving cavities (16) one by one; the oil injection assembly (6) further includes a push block (65); the oil outlet channel (17) is located at the wall of the receiving cavity (16) on the side away from the other receiving cavity (16); one end of the push block (65) is connected to the heat expansion block (61); the other end of the push block (65) is provided with a third chamfer (651); the third chamfer (651) is used for the piston block (62) to abut against.

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