Temperature control device for bearing seat and main shaft of discharging centrifugal machine

Abstract

The utility model discloses a temperature control device for a bearing seat and a main shaft of a discharging centrifugal machine, which belongs to the technical field of discharging centrifugal equipment and comprises a bearing chamber with a vertically arranged through hole; the main shaft penetrates through the through hole and is rotationally connected with the bearing chamber through a plurality of bearings; the support is arranged on the bearing chamber in a sleeving manner; the inner wall of the support and the outer wall of the bearing chamber form a spirally arranged cooling channel; two external flow channels are arranged in the support; one end of the external flow channel is communicated with the lower end surface of the support; the other end of the external flow channel is respectively communicated with the upper end and the lower end of the cooling channel; the cooling channel is filled with a cooling medium; the external flow channel communicated with the upper end of the cooling channel is set as an outflow flow channel; the external flow channel communicated with the lower end of the cooling channel is set as an inflow flow channel; the cooling medium flows along the cooling channel to effectively cool the whole bearing and the main shaft, so that the overheat phenomenon of the unloading centrifugal machine in the working process is avoided, and the unloading centrifugal machine does not need to stop for waiting or frequently inject lubricating grease.

Description

Technical Field

[0001] The utility model relates to the technical field of unloading centrifugal equipment, in particular to a bearing seat and a main shaft temperature control device of a unloading centrifuge. Background Art

[0002] The unloading centrifuge uses the component of the centrifugal force exerted on the material to be separated on the surface of the conical drum to unload. It is a filtering centrifuge that can complete the feeding, separation and unloading processes at full speed. The unloading centrifuge has a wide range of uses and is a key separation equipment in the chemical and pharmaceutical industries.

[0003] The bearings of the main shaft of the unloading centrifuge are arranged vertically up and down, and grease lubrication is usually used to lubricate the bearings. Specifically, lithium-based grease is usually used to lubricate the bearings of the unloading centrifuge main shaft, and lithium-based grease needs to be added regularly. The main shaft of the unloading centrifuge is prone to overheating after long-term high-load operation. In order to ensure the lubrication of the bearings and prevent the bearings from overheating and affecting their service life, it is necessary to stop and wait or frequently add grease, which seriously affects production efficiency.

[0004] Therefore, it is an urgent problem to be solved at this stage to develop and design a bearing seat and spindle temperature control device for a discharging centrifuge that can effectively cool the bearings and prevent the bearings from overheating without the need for downtime or frequent grease filling. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a bearing seat and spindle temperature control device for a discharging centrifuge, in which a cooling medium can flow along a spirally arranged cooling channel formed by the inner wall of the support and the outer wall of the bearing chamber, and the cooling medium flows through the bearing chamber in an upward direction along the spiral, so as to effectively cool the bearing and the spindle as a whole, thereby avoiding overheating of the discharging centrifuge during operation, and eliminating the need to stop the machine for waiting or frequently add grease, thereby effectively improving production efficiency and increasing the service life of the spindle and bearings.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] On the one hand, the utility model provides a bearing seat of a discharging centrifuge, comprising:

[0008] A bearing chamber, wherein the bearing chamber has a vertically arranged through hole; the main shaft passes through the through hole, and the main shaft is rotatably connected to the bearing chamber through a plurality of bearings;

[0009] A support, wherein the support is sleeved on the bearing chamber; the inner wall of the support and the outer wall of the bearing chamber form a cooling channel spirally arranged around the bearing chamber; two external flow channels are arranged inside the support; one end of the two external flow channels is communicated with the lower end surface of the support; the other ends of the two external flow channels are respectively communicated with the upper end and the lower end of the cooling channel; the cooling channel is filled with cooling medium;

[0010] The external flow channel connected to the upper end of the cooling channel is set as an outflow channel; the external flow channel connected to the lower end of the cooling channel is set as an inflow channel.

[0011] As a preferred technical solution, a circumferentially arranged boss is provided at the upper end of the bearing chamber, and the boss is fixedly connected to the support.

[0012] As a preferred technical solution, a plurality of connection holes are provided on the boss, and connection bolts are provided in the connection holes. The connection bolts pass through the connection holes and are threadedly connected to the upper end surface of the support.

[0013] As a preferred technical solution, the cross-sectional area of ​​the cooling channel gradually decreases along the flow direction of the cooling medium.

[0014] As a preferred technical solution, a spirally arranged heat exchange groove is provided on the outer wall surface of the bearing chamber, the outer wall surface of the bearing chamber is in contact with the inner wall surface of the support, and the heat exchange groove and the inner wall surface of the support form the cooling channel.

[0015] As a preferred technical solution, the depth of the heat exchange groove gradually decreases in the spiral upward direction.

[0016] As a preferred technical solution, sealing elements are provided between the bearing chamber and the support respectively above and below the cooling channel;

[0017] And / or, a sealing element is provided between the bearing chamber and the support above the cooling channel, and two sealing elements are provided between the bearing chamber and the support below the cooling channel;

[0018] And / or, bearings are provided at both ends of the through hole; and mounting grooves are provided at positions of the through hole corresponding to the bearings.

[0019] As a preferred technical solution, the cooling medium is set to water or heat transfer oil.

[0020] In the second aspect, the utility model provides a spindle temperature control device, including the aforementioned unloading centrifuge bearing seat and hydraulic station, wherein the hydraulic station is provided with an oil tank and a heat exchanger, and the oil tank is connected to the two external flow channels respectively through pipelines.

[0021] As a preferred technical solution, temperature detection components are provided at the inlet and outlet of the heat exchanger.

[0022] The beneficial effects of the utility model are as follows:

[0023] 1. The cooling medium in the utility model can flow along the spiral cooling channel formed by the inner wall of the support and the outer wall of the bearing chamber. The cooling medium flows through the bearing chamber in the upward direction of the spiral, which effectively cools the bearing and the main shaft as a whole, avoiding overheating of the unloading centrifuge during operation, and there is no need to stop the machine for waiting or frequently add grease, which effectively improves the production efficiency and increases the service life of the main shaft and bearings.

[0024] 2. The temperature of the cooling medium of the utility model increases after flowing and exchanging heat in the cooling channel. As the cross-section of the cooling channel gradually decreases, the flow rate of the cooling medium with increased temperature in the cooling channel gradually increases, ensuring that the cooling medium also has a good heat exchange effect at the end of the cooling channel.

[0025] 3. The utility model provides sealing elements above and below the cooling channel between the bearing chamber and the support, so that the cooling channel can better withstand pressure, prevent leakage of cooling medium, and ensure that the bearings at both ends of the through hole can obtain good heat dissipation effect.

[0026] 4. The spiral setting of the cooling channel of the utility model can effectively increase the heat exchange area, which is beneficial to the heat dissipation of the main shaft and the bearing; at the same time, the spirally arranged cooling channel limits the flow direction of the cooling medium, which can effectively avoid the cooling medium tending to the passage with less resistance, resulting in uneven local heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a bearing seat of a discharging centrifuge of the utility model;

[0028] Figure 2 for Figure 1 A magnified image of area A;

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the bearing chamber;

[0030] Figure 4 The utility model is a schematic diagram of the overall structure of a spindle temperature control device.

[0031] In the figure: 1-bearing chamber, 11-through hole, 111-mounting groove, 12-boss, 121-connecting hole, 13-connecting bolt, 14-heat exchange groove, 2-main shaft, 3-bearing, 4-support, 41-external flow channel, 411-first section, 412-second section, 5-cooling channel, 6-sealing element, 7-hydraulic station, 71-oil tank, 72-heat exchanger, 73-pipeline. DETAILED DESCRIPTION

[0032] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0033] First, please refer to Figure 1-Figure 3 , which is an embodiment of a bearing seat of a discharging centrifuge provided by the utility model, comprises a bearing chamber 1, the bearing chamber 1 has a vertically arranged through hole 11, and the through hole 11 penetrates the center of the bearing chamber 1; the bearing chamber 1 is sleeved on the main shaft 2 through the through hole 11, and the main shaft 2 and the bearing chamber 1 are rotatably connected through a plurality of bearings 3 distributed at both ends of the through hole 11; the support 4 is sleeved on the bearing chamber 1, and the inner wall of the support 4 is tightly fitted with the outer wall of the bearing chamber 1, and a cooling channel 5 spirally arranged around the bearing chamber 1 is formed between the support 4 and the bearing chamber 1, and the cooling channel 5 is filled with cooling medium; two external flow channels 41 are respectively connected with the upper end and the lower end of the cooling channel 5 inside the support 4; The cooling medium can enter the cooling channel 5 through an external flow channel 41 and flow out from another external flow channel 41. The cooling medium flows through the bearing chamber 1 along the spirally arranged cooling channel 5 to avoid local poor heat dissipation. The interfaces of the two external flow channels 41 are both located at the lower end surface of the support 4, which is convenient for processing and connecting pipelines 73. The cross-sectional area of ​​the cooling channel 5 gradually decreases along the flow direction of the cooling medium. As the heat exchange temperature of the cooling medium in the cooling channel 5 increases, the flow rate of the cooling medium in the cooling channel 5 gradually increases, which can improve the heat exchange effect of the cooling medium at the end of the cooling channel 5, ensuring that the bearing 3 and the main shaft 2 located at the upper end of the bearing chamber 1 can also effectively dissipate heat.

[0034] It should be noted that the circumferential direction, axial direction and radial direction in the present invention are all based on the axis of the bearing chamber 1 .

[0035] For clarification, please refer to Figure 1 Bearings 3 are provided at both ends of the through hole 11, and multiple bearings 3 can effectively improve the stability of the rotation of the main shaft 2 relative to the bearing chamber 1; specifically, a mounting groove 111 is provided at the position of the through hole 11 corresponding to the bearing 3, and the mounting groove 111 can accommodate the bearing 3, so as to facilitate the installation of the bearing 3 in the through hole 11.

[0036] In this embodiment, please refer to Figure 1 and Figure 3The upper end of the bearing chamber 1 is provided with a circumferentially arranged boss 12, and the boss 12 is fixedly connected to the upper end surface of the support 4, which can effectively locate the relative position of the bearing chamber 1 and the support 4; specifically, the boss 12 is provided with a plurality of circumferentially evenly distributed connecting holes 121, and the connecting holes 121 are provided with connecting bolts 13. The upper end surface of the support 4 has threaded holes matching the connecting bolts 13. The connecting bolts 13 pass through the connecting holes 121 and are threadedly connected with the threaded holes on the upper end surface of the support 4, so that the upper end surface of the support 4 abuts against the boss 12, and the support 4 is firmly fixedly connected to the bearing chamber 1, and the support 4 can play a stable supporting role for the bearing chamber 1.

[0037] In this embodiment, please refer to Figure 1-Figure 3 A spirally arranged heat exchange groove 14 is provided on the outer wall surface of the bearing chamber 1, and the outer wall surface of the bearing chamber 1 is in contact with the inner wall surface of the support 4, so that the heat exchange groove 14 and the inner wall surface of the support 4 form a cooling channel 5; in other embodiments, the heat exchange groove 14 can also be provided on the inner wall surface of the support 4 or on the outer wall surface of the bearing chamber 1 and the inner wall surface of the support 4 at the same time, so that the cooling medium can flow stably in the formed cooling channel 5 and ensure the supporting strength of the support 4 to the bearing chamber 1.

[0038] On the basis of the foregoing embodiment, the depth of the heat exchange groove 14 gradually decreases in the spiral upward direction, so that the cross-sectional area of ​​the cooling channel 5 gradually becomes smaller along the flow direction of the cooling medium, which is convenient for processing and production; in other embodiments, the cross-sectional area of ​​the cooling channel 5 can also be gradually reduced by gradually reducing the width of the heat exchange groove 14 or reducing the groove width and groove depth at the same time, so as to facilitate production.

[0039] Need to explain, Figure 1 The direction of the arrow in is the flow direction of the cooling medium; the cooling medium is preferably set to water or heat transfer oil, based on efficient heat exchange.

[0040] In this embodiment, please refer to Figure 1 and Figure 2 The external flow channel 41 connected to the upper end of the cooling channel 5 is set as the outflow channel; the external flow channel 41 connected to the lower end of the cooling channel 5 is set as the inflow channel, and the connection ports of the inflow channel and the outflow channel with the pipeline are respectively located at the lower end surface of the support 4; the cooling medium flows into the lower end of the cooling channel 5 through the inflow channel, and spirally flows upward in the cooling channel 5, exchanging heat with the main shaft 2 and the bearing 3 from bottom to top, and the cooling medium after heat exchange flows out from the upper end of the cooling channel 5 through the outflow channel. Under the action of pressure, the cooling medium can reduce the situation where the cooling medium tends to move towards the path with less resistance, resulting in uneven local heat dissipation.

[0041] For clarification, please refer to Figure 1 and Figure 2The external flow channel 41 includes a first section 411 connected to the lower end surface of the support 4 and a second section 412 connected to the cooling channel 5. The first section 411 extends axially and the second section 412 extends radially. Both the first section 411 and the second section 412 are easy to process and can ensure that the external flow channel 41 can be easily connected to the pipeline 73.

[0042] In this embodiment, please refer to Figure 1 and Figure 2 A sealing element 6 is provided between the bearing chamber 1 and the support 4 above the cooling channel 5, and two sealing elements 6 are provided between the bearing chamber 1 and the support 4 below the cooling channel 5. A groove matching the sealing element 6 is provided on the outer wall of the bearing chamber 1. The sealing element 6 enables the cooling channel 5 to better withstand pressure and prevent leakage of the cooling medium. Specifically, at the connection between the inflow channel and the cooling channel 5, the cooling medium needs to overcome gravity and flow upward, and the lower part of the cooling channel 5 needs to withstand greater pressure. Therefore, two sealing elements 6 are provided below the cooling channel 5, which can To bear higher pressure and improve the sealing effect; at the same time, for the unloading centrifuge, the upper end of the bearing chamber 1 is closer to the material, and will absorb additional heat during production, and the temperature may be higher than the lower end of the bearing chamber 1. Since the setting of the sealing element 6 requires space, on the basis of ensuring the sealing effect between the bearing chamber 1 and the support 4, more sealing elements 6 are arranged under the cooling channel 5, so that the upper end of the bearing chamber 1 has more space to set the cooling channel 5, thereby improving the heat dissipation and cooling effect of the main shaft 2 and the bearing 3 at the upper end of the bearing chamber 1; specifically, the sealing element 6 is preferably set as a sealing ring.

[0043] Second, please refer to Figure 4 The utility model provides a spindle temperature control device, including the aforementioned unloading centrifuge bearing seat and hydraulic station 7, wherein an oil tank 71 and a heat exchanger 72 are arranged in the hydraulic station 7, and the oil tank 71 is connected with two external flow channels 41 respectively through pipelines 73. Under the action of the pump, the cooling medium can be continuously circulated between the oil tank 71 and the cooling channel 5; the heat exchanger 72 is used to absorb the heat of the cooling medium flowing out of the cooling channel 5, to ensure that the temperature of the cooling medium flowing into the cooling channel 5 is low, and to continuously dissipate heat to the spindle 2 and the bearing 3.

[0044] It should be noted that the inlet and outlet of the heat exchanger 72 are preferably provided with temperature detection components. The temperature detection component can indirectly calculate the temperature of the main shaft 2 and the bearing 3 by measuring the temperature of the heat exchange medium at the inlet and outlet of the heat exchanger 72, so as to conveniently monitor the temperature of the main shaft 2 and the bearing 3; specifically, the temperature detection component is preferably set as a temperature sensor.

[0045] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bearing seat for a discharging centrifuge, characterized in that: include: A bearing chamber (1), wherein the bearing chamber (1) has a vertically arranged through hole (11); the main shaft (2) passes through the through hole (11), and the main shaft (2) is rotatably connected to the bearing chamber (1) via a plurality of bearings (3); A support (4), wherein the support (4) is sleeved on the bearing chamber (1); the inner wall of the support (4) and the outer wall of the bearing chamber (1) form a cooling channel (5) spirally arranged around the bearing chamber (1); two external flow channels (41) are arranged inside the support (4); one end of the two external flow channels (41) are both connected to the lower end surface of the support (4); the other ends of the two external flow channels (41) are respectively connected to the upper end and the lower end of the cooling channel (5); the cooling channel (5) is filled with a cooling medium; The external flow channel (41) connected to the upper end of the cooling channel (5) is set as an outflow channel; and the external flow channel (41) connected to the lower end of the cooling channel (5) is set as an inflow channel.

2. A bearing seat for a discharging centrifuge according to claim 1, characterized in that: The upper end of the bearing chamber (1) is provided with a circumferentially arranged boss (12), and the boss (12) is fixedly connected to the support (4).

3. The bearing seat of a discharging centrifuge according to claim 2, characterized in that: The boss (12) is provided with a plurality of connection holes (121), and connection bolts (13) are provided in the connection holes (121). The connection bolts (13) pass through the connection holes (121) and are threadedly connected to the upper end surface of the support (4).

4. The bearing seat of a discharging centrifuge according to claim 1, characterized in that: The cross-sectional area of ​​the cooling channel (5) gradually decreases along the flow direction of the cooling medium.

5. The bearing seat of a discharging centrifuge according to claim 4, characterized in that: The outer wall surface of the bearing chamber (1) is provided with a spirally arranged heat exchange groove (14), the outer wall surface of the bearing chamber (1) is in contact with the inner wall surface of the support (4), and the heat exchange groove (14) and the inner wall surface of the support (4) form the cooling channel (5).

6. A bearing seat for a discharging centrifuge according to claim 5, characterized in that: The depth of the heat exchange groove (14) gradually decreases in the spiral upward direction.

7. The bearing seat of a discharging centrifuge according to claim 1, characterized in that: Sealing elements (6) are provided between the bearing chamber (1) and the support (4) respectively above and below the cooling channel (5); And / or, a sealing element (6) is provided between the bearing chamber (1) and the support (4) above the cooling channel (5), and two sealing elements (6) are provided between the bearing chamber (1) and the support (4) below the cooling channel (5); And / or, bearings (3) are provided at both ends of the through hole (11); and mounting grooves (111) are provided at positions of the through hole (11) corresponding to the bearings (3).

8. The bearing seat of a discharging centrifuge according to claim 1, characterized in that: The cooling medium is water or heat transfer oil.

9. A spindle temperature control device, characterized in that: It comprises a bearing seat and a hydraulic station (7) of a discharging centrifuge as described in any one of claims 1 to 8, wherein an oil tank (71) and a heat exchanger (72) are provided in the hydraulic station (7), and the oil tank (71) is connected to the two external flow channels (41) respectively through pipelines (73).

10. A spindle temperature control device according to claim 9, characterized in that: Temperature detection components are provided at the inlet and outlet of the heat exchanger (72).

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