CN219888258U - Gear pump shaft and gear pump for conveying liquid medium - Google Patents
Gear pump shaft and gear pump for conveying liquid medium Download PDFInfo
- Publication number
- CN219888258U CN219888258U CN202321300938.6U CN202321300938U CN219888258U CN 219888258 U CN219888258 U CN 219888258U CN 202321300938 U CN202321300938 U CN 202321300938U CN 219888258 U CN219888258 U CN 219888258U
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- CN
- China
- Prior art keywords
- shaft
- pump shaft
- pump
- lubricating oil
- gear pump
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Links
- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 239000010687 lubricating oil Substances 0.000 claims abstract description 45
- 238000005461 lubrication Methods 0.000 claims description 9
- 239000000945 filler Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 9
- 230000001050 lubricating effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
Abstract
The utility model discloses a pump shaft of a gear pump for conveying liquid medium and the gear pump. The gear pump shaft for conveying the liquid medium comprises a pump shaft, wherein a lubricating oil groove is formed in the surface of the pump shaft, a lubricating oil channel is formed in the pump shaft, the lubricating oil groove is communicated with the lubricating oil channel, and lubricating oil can enter through the lubricating oil channel and flow between the outer surface of the pump shaft and the shaft hole. According to the utility model, the pump shaft of the gear pump is improved, the lubricating oil groove is added on the surface of the pump shaft, and the reasonable fit clearance between the gear shaft and the shaft hole is ensured under the condition of original design parameters, so that the gear pump can fully lubricate between the shaft and the hole during working, the lubricity of moving parts is improved, the problem of pump clamping is solved, and the normal use of the gear pump is ensured.
Description
Technical Field
The utility model relates to the technical field of gear pumps, in particular to a pump shaft of a gear pump for conveying liquid media and the gear pump.
Background
A typical gear pump is designed such that the gear shaft and the gear bore must have a certain clearance in order to ensure proper operation. The size of the gap has a certain influence on the performance of the gear pump, and the excessive gap increases internal leakage and reduces volumetric efficiency, so that the requirement on the service performance cannot be met.
In the prior art, in order to ensure the performance of a gear pump, the clearance between a gear shaft and an inner hole of the gear is smaller, the volumetric efficiency between two parts is increased, but the lubricity is poor, so that the phenomenon of locking is easy to occur in the use process.
Therefore, on the premise of ensuring the service performance of the gear pump, the fit clearance between the gear shaft and the inner hole of the gear is reduced as much as possible, and the phenomenon of pump blocking is ensured not to occur.
Therefore, an improved design of the structure of the gear shaft is required.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a gear pump shaft and a gear pump for conveying liquid media.
The utility model is realized in such a way that the gear pump shaft for conveying liquid medium comprises a pump shaft, wherein the surface of the pump shaft is provided with a lubricating oil groove, the inside of the pump shaft is provided with a lubricating oil channel, the lubricating oil groove is communicated with the lubricating oil channel, and lubricating oil can enter through the lubricating oil channel through the lubricating oil groove and flow between the outer surface of the pump shaft and the shaft hole.
The lubricating oil groove is a spiral groove, and the spiral groove is arranged on the outer surface of the pump shaft.
The lubricating oil channel is provided with a first opening and a second opening, the first opening is formed in one end face of the pump shaft, and the second opening is formed in the outer surface of the pump shaft.
Wherein, lubricating oil passageway is L shape structure passageway.
Wherein the second port is provided with the middle part of the pump shaft.
The middle part of the pump shaft is provided with an annular groove concentric with the axis of the pump shaft, and the second port is positioned in the annular groove.
The two sides of the annular groove are respectively provided with a spiral lubricating oil groove, and the lubricating oil grooves are connected and communicated with the annular groove.
The pump comprises a pump shaft, a spiral lubricating oil groove, a pump shaft, a pump cover and a pump cover, wherein an end annular groove is formed at the position, close to two ends, of the pump shaft, and is arranged concentrically with the axis of the pump shaft, and is connected and communicated with the spiral lubricating oil groove.
Wherein, the pump shaft is the driven shaft of gear pump.
The utility model also provides a gear pump for conveying the liquid medium, which comprises a gear pump shaft for conveying the liquid medium.
According to the utility model, the pump shaft of the gear pump is improved, the lubricating oil groove is added on the surface of the pump shaft, and the reasonable fit clearance between the gear shaft and the shaft hole is ensured under the condition of original design parameters, so that the gear pump can fully lubricate between the shaft and the hole during working, the lubricity of moving parts is improved, the problem of pump clamping is solved, and the normal use of the gear pump is ensured.
Drawings
Fig. 1 is a schematic diagram of a gear pump for conveying a liquid medium according to the prior art.
Fig. 2 is a schematic structural view of a gear pump for conveying a liquid medium according to an embodiment of the present utility model.
FIG. 3 is a schematic diagram of a pump shaft of a gear pump for delivering a liquid medium according to an embodiment of the present utility model.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments.
The utility model provides a gear pump shaft for conveying liquid media, which comprises a pump shaft 2, wherein a lubricating oil groove 9 is formed in the surface of the pump shaft, a lubricating oil channel is formed in the pump shaft, the lubricating oil groove is communicated with the lubricating oil channel, and lubricating oil can enter through the lubricating oil channel and flow between the outer surface of the pump shaft and a shaft hole through the lubricating oil groove.
In order to improve the lubricating performance of the shaft, the novel pump shaft structure is characterized in that a spiral lubricating groove is designed on the surface of the shaft, and a medium is introduced into the lubricating oil groove through a lubricating oil channel, so that the shaft hole is fully lubricated, and the clamping phenomenon of the pump is avoided.
In some embodiments, the lubrication groove is a spiral groove, and the spiral groove is arranged on the outer surface of the pump shaft. Of course, other shapes are also possible, not limited to the embodiment shown in the figures, such as a screw-like arrangement.
In some embodiments, the lubricating oil channel has a first port 10 and a second port 11, the first port is formed on an end surface of the pump shaft, and the second port is formed on an outer surface of the pump shaft. The first port is an oil inlet, and the second port is an oil outlet, so that medium lubricating oil is introduced into the lubricating oil groove in the middle of the shaft from the oil inlet through designing an oil inlet at the end part of the shaft. The first hole is communicated with the inlet of the pump, and when the gear pump works, a certain amount of working medium is introduced from the inlet of the pump to the lubrication groove in the middle of the shaft, so that the inner holes of the driven shaft and the driven gear are sufficiently lubricated, the working state of the pump is greatly improved, and the clamping phenomenon of the pump is avoided.
In some embodiments, the lubricant channel is an L-shaped channel, specifically, the first port extends inward along the axial direction to form a first channel, then changes direction at 90 degrees in the middle and extends to the outer surface along the radial direction of the pump shaft to form a second channel, and the first channel and the second channel are connected to form an L-shaped channel, which is not limited to this shape or structure.
In some embodiments, the second port is provided with a middle portion of the pump shaft, so that the oil outlet position is conveniently located at the middle position, and effective lubrication can be conveniently formed at two ends.
In some embodiments, an annular groove 12 concentric with the axis of the pump shaft is formed in the middle of the pump shaft, and the second port is located in the annular groove, so that oil can be conveniently discharged, and the discharged oil firstly enters the annular groove through the second port and then enters the lubricating oil groove, so that the lubricating function of the shaft and the hole is realized.
In some embodiments, two spiral lubricating oil grooves 13 are respectively arranged on two sides of the annular groove, and the lubricating oil grooves are connected and communicated with the annular groove. Thus facilitating the oil discharge, the discharged oil firstly enters the annular groove through the second port and then enters the lubricating oil groove, thereby realizing the lubricating function of the shaft and the hole
In some embodiments, an end annular groove is formed on each of the positions near two ends of the pump shaft, and the end annular grooves are arranged concentrically with the axis of the pump shaft and are connected and communicated with the spiral lubricating oil grooves.
Wherein, the pump shaft is the driven shaft of gear pump.
The utility model also provides a gear pump for conveying liquid media, which comprises a gear pump shaft for conveying liquid media, wherein the pump shaft 2 is a driven shaft of the gear pump, the driven shaft is arranged in parallel with the axis of the driving shaft 1, a driving gear 3 is arranged on the driving shaft, a driven tooth 4 is arranged on the driven shaft, the driving gear and the driven gear are arranged in a pump body in a matching way, the pump body is arranged between a front plate and a rear plate, and the driving shaft and the driven shaft are respectively matched with shaft holes on the front plate and the rear plate to form rotary connection;
the outer side of the rear plate is provided with a positioning ring 6, the outer side of the positioning ring is provided with sealing filler 7, and the filler material can be asbestos fabrics, carbon fibers, rubber, flexible graphite, engineering plastics and the like, is prefabricated into a ring shape or a strip shape, and adopts a multi-ring or spiral multilayer structure. The locating ring and the sealing filler are coaxially arranged and sleeved on the shaft part of the driving shaft, which extends out of the outer side of the rear plate, a filler box 5 is arranged on the outer side of the locating ring and the sealing filler, the filler box is fixed with the rear plate, a T-shaped filler cover 8 is arranged on the outer opening side of the filler box and is in threaded connection with the inner wall surface of the filler box so as to compress the sealing filler on the outer side, one end of the driving shaft extends out of the T-shaped filler cover and is used for being connected with a motor, when the driving shaft rotates, the driving shaft is driven to rotate through a gear set, so that liquid medium entering the gear pump is conveyed out of the inlet and conveying of the liquid medium is realized.
This is the prior art of gear pumps today and will not be described in detail here.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (10)
1. The gear pump shaft for conveying liquid media is characterized by comprising a pump shaft, wherein a lubricating oil groove is formed in the surface of the pump shaft, a lubricating oil channel is formed in the pump shaft, the lubricating oil groove is communicated with the lubricating oil channel, and lubricating oil can enter through the lubricating oil channel and flow between the outer surface of the pump shaft and a shaft hole.
2. The pump shaft of a gear pump for delivering a liquid medium of claim 1, wherein the lubrication groove is a helical groove, the helical groove being disposed on an outer surface of the pump shaft.
3. The gear pump shaft of claim 1, wherein the lubrication channel has a first port and a second port, the first port opening onto an end face of the pump shaft and the second port opening onto an outer surface of the pump shaft.
4. The pump shaft of a gear pump for delivering a liquid medium of claim 1, wherein the lubrication channel is an L-shaped structural channel.
5. A gear pump shaft for delivering a liquid medium as claimed in claim 3, wherein the second port opens into a central portion of the pump shaft.
6. The pump shaft of a gear pump for delivering a liquid medium as defined in claim 5, wherein a central portion of the pump shaft defines an annular groove concentric with an axis of the pump shaft, and wherein the second port is located in the annular groove.
7. The pump shaft of a gear pump for transporting a liquid medium as defined in claim 6, wherein a spiral lubrication groove is provided on both sides of the annular groove, and the lubrication groove is connected to and communicates with the annular groove.
8. The pump shaft of a gear pump for transporting a liquid medium as defined in claim 7, wherein each of the pump shafts is formed with an end annular groove at a position near both ends thereof, is arranged concentrically with the axis of the pump shaft, and is connected to and communicates with each of the spiral lubrication grooves.
9. The pump shaft of a gear pump for delivering a liquid medium of claim 1, wherein the pump shaft is a driven shaft of the gear pump.
10. Gear pump for delivering a liquid medium, characterized by comprising a gear pump shaft for delivering a liquid medium according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321300938.6U CN219888258U (en) | 2023-05-26 | 2023-05-26 | Gear pump shaft and gear pump for conveying liquid medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321300938.6U CN219888258U (en) | 2023-05-26 | 2023-05-26 | Gear pump shaft and gear pump for conveying liquid medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219888258U true CN219888258U (en) | 2023-10-24 |
Family
ID=88400054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321300938.6U Active CN219888258U (en) | 2023-05-26 | 2023-05-26 | Gear pump shaft and gear pump for conveying liquid medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219888258U (en) |
-
2023
- 2023-05-26 CN CN202321300938.6U patent/CN219888258U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |