CN216200400U - Self-lubricating cooling circulation device for double-screw pump bearing - Google Patents
Self-lubricating cooling circulation device for double-screw pump bearing Download PDFInfo
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- CN216200400U CN216200400U CN202122619323.7U CN202122619323U CN216200400U CN 216200400 U CN216200400 U CN 216200400U CN 202122619323 U CN202122619323 U CN 202122619323U CN 216200400 U CN216200400 U CN 216200400U
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Abstract
The utility model discloses a self-lubricating cooling circulating device for a bearing of a double-screw pump, which belongs to the technical field of screw pump manufacturing and comprises a bearing seat connected with a pump body, a gear box connected to the outer side of the bearing seat through a fastener, and transmission shafts arranged in the bearing seat and the gear box, wherein a front bearing and a rear bearing are respectively arranged on the transmission shafts at the front end and the rear end of the bearing seat; a gear is arranged on the transmission shaft in the gear box; an oil receiving box is arranged above the gear in the gear box; and a lubricating oil path is arranged at the upper part in the bearing seat and is communicated with the gear box and the rear bearing chamber, so that a bearing self-lubricating cooling circulation loop is formed between the rear bearing chamber and the gear box. The utility model realizes the self-lubrication and cooling of the rear bearing, avoids the risk of external leakage of an external pipeline, improves the stability and reliability of the double-screw pump and prolongs the service life of the double-screw pump.
Description
Technical Field
The utility model belongs to the technical field of screw pump manufacturing, and particularly relates to a self-lubricating cooling circulation device for a bearing of a double-screw pump.
Background
The twin-screw pump is a positive displacement pump, which is widely applied to various fields such as petroleum, chemical engineering, ships and the like at present, and is used for conveying various media with different flow and pressure requirements. In practical application, the flow rate and pressure of the medium delivered by many users are relatively large, and the specifications of the adopted pump are large. When a medium with higher temperature is conveyed, the heat dissipation effect of a gear box with a common casting structure is poor, the temperature of the gear box and the bearing part is easily overhigh and exceeds the normal use temperature of the gear and the bearing, so the normal service life of the gear and the bearing is influenced, and even the gear and the bearing are damaged.
Patent number ZL2010205590411 discloses a cooling and lubricating structure of a double-screw pump bearing and a gear, which has the following disadvantages: 1. because the span between the axle of rear bearing and front bearing and gear is great, it can't guarantee the use reliability of rear bearing to rely on the interior fluid lubrication cooling of gear box alone, so reduced the stability and the reliability of twin-screw pump operation, and then shorten its life, 2, this structure connect the food tray to pass through external pipeline and link to each other with the bearing, the cooperation is complicated, adopts external pipeline to deposit the risk of externally leaking, has increased the daily maintenance cost. The conventional method for lubricating and cooling the rear bearing is to add a single external lubricating device for the rear bearing or externally connect a lubricating pipeline by a gear box, the mode is high in cost, and the external pipeline also has external leakage risk.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a self-lubricating cooling circulating device for a double-screw pump bearing, which realizes self-lubricating and cooling of a rear bearing, avoids the risk of external leakage of an external pipeline, improves the stability and reliability of the double-screw pump and prolongs the service life of the double-screw pump.
The utility model is realized in this way, a double-screw pump bearing self-lubricating cooling circulating device, including the bearing bracket connecting the pump body, the gear box connected to the outside of the bearing bracket through the fastener, the drive shaft installed in bearing bracket and gear box, install front bearing and back bearing on the front end of the bearing bracket and back end drive shaft respectively; a gear is arranged on the transmission shaft in the gear box; an oil receiving box is arranged above the gear in the gear box; the bearing seat is characterized in that a lubricating oil path is arranged at the upper part in the bearing seat and is communicated with the gear box and the rear bearing chamber, so that a bearing self-lubricating cooling circulation loop is formed between the rear bearing chamber and the gear box.
Furthermore, the oil receiving box comprises a mounting end plate and an integrally formed box body, and the mounting end plate is welded below a bottom plate of the box body; the mounting end plate is provided with a mounting hole along the length direction of the box body, and the mounting end plate is fastened on the end face of the bearing seat through a fastener.
Furthermore, a first groove and a second groove are respectively formed in two ends of the lubricating oil path, one end of the lubricating oil path is communicated with the oil receiving box through the first groove, and the other end of the lubricating oil path is communicated with the oil hole of the rear bearing through the second groove. The cross-sectional areas of the two ends of the lubricating oil way can be increased, so that the lubricating oil can flow in and out more smoothly.
Further, an oil inlet groove is formed in a rear bearing gland of the rear bearing and is communicated with the second groove and the rear bearing respectively. The lubricating oil can enter the rear bearing and act on the rear bearing, and the heat is taken away while the rear bearing is lubricated.
Furthermore, a reinforcing boss is arranged on the bearing seat and located on the outer side of the lubricating oil path. The wall of the bearing seat can be prevented from being punched when the lubricating oil way is processed in the later stage, and the strength of the bearing seat is further ensured.
The utility model has the advantages and technical effects that: by adopting the technical scheme, the lubricating oil path is arranged at the upper part in the bearing seat and is communicated with the gear box and the rear bearing chamber, so that a bearing self-lubricating cooling circulation loop is formed between the rear bearing chamber and the gear box, the self-lubricating and cooling of the rear bearing are realized, the problem of bearing temperature rise can be prevented, the normal use of the bearing is ensured, the stability and the reliability of the double-screw pump are improved, and the service life of the double-screw pump is prolonged; the lubricating oil is lubricated and circulated in the device, the problem of external leakage of the lubricating oil caused by adding a separate external pipeline is avoided, and the installation cost and the daily maintenance cost are saved;
the oil receiving box changes the original integral processing or multi-piece welding mode, and is formed by welding the mounting end plate and the integrally formed box body, the mounting end plate is processed smoothly to be tightly attached and fixed with the bearing seat, the structure is lighter and more attractive, the matching is simple and convenient, the oil receiving box is directly mounted in the gear box, the risk of external leakage of an external pipeline is avoided, and the reliability of the device is improved;
the cross-sectional areas of the two ends of the lubricating oil way can be increased through the first groove and the second groove which are arranged at the two ends of the lubricating oil way, so that the lubricating oil can flow in and out more smoothly; the oil inlet groove formed in the rear bearing gland of the rear bearing can ensure that lubricating oil enters the rear bearing and acts on the rear bearing, and heat is taken away while the rear bearing is lubricated; the reinforcing boss that sets up can avoid wearing the wall of bearing frame when later stage processing lubricating oil circuit, and then guarantees the intensity of bearing frame.
Drawings
FIG. 1 is a schematic diagram of an overall structure provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an oil receiving box provided by an embodiment of the utility model;
fig. 3 is a sectional view of an oil receiving box according to an embodiment of the present invention.
In the figure, 1, a bearing seat; 1-1, lubricating oil path; 1-2, a first groove; 1-3, a second groove; 1-4, reinforcing the boss; 2. a drive shaft; 3. a front bearing; 4. an oil receiving box; 4-1, mounting an end plate; 4-2, a box body; 4-3, mounting holes; 5. a gear case; 6. a front bearing gland; 7. a gear; 8. a rear bearing gland; 8-1, oil inlet tank; 9. and a rear bearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1 to 3, the present application provides a double screw pump bearing self-lubricating cooling circulation device, which comprises a bearing seat 1 connected with a pump body, a gear box 5 connected to the outer side of the bearing seat through a fastener, and a transmission shaft 2 installed in the bearing seat and the gear box, wherein a front bearing 3 and a rear bearing 9 are respectively installed on the transmission shaft at the front end and the rear end of the bearing seat; a gear 7 is arranged on the transmission shaft in the gear box 5; an oil receiving box 4 is arranged above the gear in the gear box; and a lubricating oil path 1-1 is arranged at the upper part in the bearing seat 1 and is communicated with the gear box 5 and the rear bearing chamber, so that a bearing self-lubricating cooling circulation loop is formed between the rear bearing chamber and the gear box.
The oil receiving box 4 comprises a mounting end plate 4-1 and an integrally formed box body 4-2, the box body is formed by cutting, bending and welding a thin steel plate, and the mounting end plate is welded below a bottom plate of the box body; and the mounting end plate is provided with mounting holes 4-3 along the length direction of the box body, and the mounting end plate 4-1 is tightly attached to the mounting end plate with the mounting holes through screws and is fastened on the end surface of the bearing seat 1.
Two ends of the lubricating oil path 1-1 are respectively provided with a first groove 1-2 and a second groove 1-3, one end of the lubricating oil path is communicated with the oil receiving box 4 through the first groove, and the other end of the lubricating oil path is communicated with the oil hole of the rear bearing 9 through the second groove. The first groove 1-2 can smoothly guide the lubricating oil in the oil receiving box to the lubricating oil path 1-1, the second groove 1-3 can smoothly guide the lubricating oil in the lubricating oil path to the rear bearing 9, the lubricating oil is easy to block at two ends of the lubricating oil path due to the fact that the diameter of the lubricating oil path is small, and the contact area of the two ends of the lubricating oil path can be increased by the aid of the first groove 1-2 and the second groove 1-3, so that the lubricating oil can flow in and flow out more smoothly.
An oil inlet groove 8-1 is formed in a rear bearing gland 8 of the rear bearing 9, and the oil inlet groove 8-1 is communicated with the second groove 1-2 and the rear bearing respectively. The oil inlet groove is communicated with the rear part of the rear bearing, a part of lubricating oil flowing from the lubricating oil path 1-1 to the second groove flows into the rear bearing through an oil hole in the rear bearing, but the oil hole has smaller size and less oil inlet amount, and at the moment, the other most of lubricating oil enters the rear bearing from the rear part of the rear bearing 9 through the oil inlet groove 8-1, so that the lubricating oil can further enter the rear bearing and act on the rear bearing, and the heat is taken away while the rear bearing is lubricated.
The bearing seat 1 is provided with the reinforcing boss 1-4, the reinforcing boss is located on the outer side of the lubricating oil path 1-1, and the lubricating oil path is formed in the bearing seat, so that the wall of the bearing seat can be prevented from being penetrated by the reinforcing boss when the lubricating oil path is machined in the later stage, and the strength of the bearing seat is further ensured.
When the high-temperature double-screw pump starts to work, the transmission shaft 2 drives the gear 7 to rotate, and lubricating oil in the stirring gear box 5 is thrown into the oil receiving box 4 which is slightly higher than the gear. The lubricating oil in the oil receiving box flows into the rear bearing 9 through the first groove 1-2 of the bearing seat 1, the lubricating oil path 1-1, the second groove 1-3 and the oil inlet groove 8-1 formed on the rear bearing gland 8, and then flows back to the gear box through a lubricating loop formed by the rear bearing, the transmission shaft 2, the bearing seat, the front bearing 3 and the front bearing gland 6, so that the self-circulation process in the device is formed, and the effects of lubricating the bearing and taking away the heat of the bearing in time are achieved.
By adopting the technical scheme, the lubricating oil path 1-1 is arranged at the upper part in the bearing seat and is communicated with the gear box 5 and the rear bearing chamber, so that a bearing self-lubricating cooling circulation loop is formed between the rear bearing chamber and the gear box, the self-lubricating and cooling of the rear bearing 9 are realized, the problem of bearing temperature rise can be prevented, the normal use of the bearing is ensured, the stability and reliability of the double-screw pump are improved, and the service life of the double-screw pump is prolonged; the lubricating oil is lubricated and circulated in the device, the problem of external leakage of the lubricating oil caused by adding a separate external pipeline is avoided, and the installation cost and the daily maintenance cost are saved;
the oil receiving box 4 changes the original integral processing or multi-piece welding mode, and is formed by welding an installation end plate 4-1 and an integrally formed box body 4-2, the installation end plate is processed smoothly to be tightly attached and fixed with a bearing seat, the structure is lighter and more attractive, the matching is simple and convenient, the oil receiving box is directly installed in the gear box 5, the risk of external leakage of an external pipeline is avoided, and the reliability of the device is improved;
the cross-sectional areas of the two ends of the lubricating oil path can be increased through the first groove 1-2 and the second groove 1-3 which are arranged at the two ends of the lubricating oil path 1-1, so that the lubricating oil flows in and out more smoothly; an oil inlet groove 8-1 formed in a rear bearing gland 8 of the rear bearing 9 can ensure that lubricating oil enters the rear bearing and acts on the rear bearing, and heat is taken away while the rear bearing is lubricated; the reinforcing boss 1-4 can avoid penetrating the wall of the bearing seat 1 when the lubricating oil way 1-1 is processed in the later stage, and further the strength of the bearing seat is ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. A self-lubricating cooling circulation device for a bearing of a double-screw pump comprises a bearing seat connected with a pump body, a gear box connected to the outer side of the bearing seat through a fastener, and transmission shafts arranged in the bearing seat and the gear box, wherein a front bearing and a rear bearing are respectively arranged on the transmission shaft at the front end and the rear end of the bearing seat; a gear is arranged on the transmission shaft in the gear box; an oil receiving box is arranged above the gear in the gear box; the bearing seat is characterized in that a lubricating oil path is arranged at the upper part in the bearing seat and is communicated with the gear box and the rear bearing chamber, so that a bearing self-lubricating cooling circulation loop is formed between the rear bearing chamber and the gear box.
2. The twin screw pump bearing self lubricating cooling cycle device of claim 1, wherein the oil receiving box comprises a mounting end plate and an integrally formed box body, the mounting end plate is welded below a box body bottom plate; the mounting end plate is provided with a mounting hole along the length direction of the box body, and the mounting end plate is fastened on the end face of the bearing seat through a fastener.
3. The twin-screw pump bearing self-lubricating cooling circulation device according to claim 1 or 2, wherein a first groove and a second groove are respectively formed at two ends of the lubricating oil path, one end of the lubricating oil path is communicated with the oil receiving box through the first groove, and the other end of the lubricating oil path is communicated with the oil hole of the rear bearing through the second groove.
4. The double-screw pump bearing self-lubricating cooling circulation device as claimed in claim 3, wherein an oil inlet groove is formed in a rear bearing gland of the rear bearing, and the oil inlet groove is communicated with the second groove and the rear bearing respectively.
5. The twin screw pump bearing self lubricating cooling circulation device of claim 1 wherein the bearing blocks are provided with reinforcing bosses located outboard of the lubrication oil passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122619323.7U CN216200400U (en) | 2021-10-28 | 2021-10-28 | Self-lubricating cooling circulation device for double-screw pump bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122619323.7U CN216200400U (en) | 2021-10-28 | 2021-10-28 | Self-lubricating cooling circulation device for double-screw pump bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216200400U true CN216200400U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122619323.7U Active CN216200400U (en) | 2021-10-28 | 2021-10-28 | Self-lubricating cooling circulation device for double-screw pump bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216200400U (en) |
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2021
- 2021-10-28 CN CN202122619323.7U patent/CN216200400U/en active Active
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