CN216381864U - Screw rotor cooling structure and vacuum pump - Google Patents
Screw rotor cooling structure and vacuum pump Download PDFInfo
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- CN216381864U CN216381864U CN202123231455.9U CN202123231455U CN216381864U CN 216381864 U CN216381864 U CN 216381864U CN 202123231455 U CN202123231455 U CN 202123231455U CN 216381864 U CN216381864 U CN 216381864U
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- flow guide
- blind hole
- liquid
- screw rotor
- guide pipe
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Abstract
The utility model provides a screw rotor cooling structure and a vacuum pump, belonging to the technical field of vacuum equipment, wherein the screw rotor cooling structure comprises: one end of the rotor body is provided with a blind hole suitable for containing cooling liquid; the flow guide block is connected with a flow guide pipe, and a gap is formed between the flow guide pipe and the inner wall of the blind hole; the flow guide block is provided with a liquid inlet and a liquid outlet. According to the screw rotor cooling structure provided by the utility model, cooling liquid flows into the flow guide pipe through the liquid inlet, flows into the blind hole after passing through the flow guide pipe, flows in the blind hole, continuously flows into the blind hole through the flow guide pipe, flows to the liquid outlet through the gap between the flow guide pipe and the inner wall of the blind hole, and flows out through the liquid outlet, so that the cooling liquid circularly flows in the rotor body, the rotor body is cooled, the deformation of friction heat and compression heat generated by the rotor body during working is prevented, and the normal operation of a vacuum pump is ensured.
Description
Technical Field
The utility model relates to the technical field of vacuum equipment, in particular to a screw rotor cooling structure and a vacuum pump.
Background
The double screw vacuum pump is an air pumping equipment utilizing a pair of screws to make synchronous high-speed reverse rotation in pump shell to produce air suction and exhaust action.
Twin-screw vacuum pump is when carrying out the during operation, and at the in-process of breathing in and exhausting, the screw rod can produce frictional heat and compression heat, in order to guarantee twin-screw vacuum pump's normal operating, need cool off the screw rod to prevent that the overheated emergence of screw rod from being out of shape, and then damage the vacuum pump.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a screw rotor cooling structure and a vacuum pump.
In order to solve the above technical problem, the present invention provides a screw rotor cooling structure, including:
one end of the rotor body is provided with a blind hole suitable for containing cooling liquid;
the guide pipe is suitable for extending into the blind hole and is rotationally connected with the end part of the rotor body, and a gap allowing liquid to flow is formed between the guide pipe and the inner wall of the blind hole;
the flow guide block is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the flow guide pipe, and the liquid outlet is communicated with the gap.
Optionally, the liquid inlet is arranged in the axial direction of the flow guide block;
the liquid outlet is arranged in the radial direction of the flow guide block.
Optionally, the liquid inlet is connected with a liquid inlet pipe joint;
the liquid outlet is connected with a liquid outlet pipe joint.
Optionally, the axis of the flow guide pipe coincides with the axis of the blind hole.
Optionally, a connection joint is installed on the end portion of the rotor body connected with the flow guide block, and the flow guide block is rotatably installed on the connection joint.
Optionally, a rolling bearing is arranged between the flow guide block and the connecting joint.
Optionally, an O-ring seal is disposed between the flow guide block and the connection joint.
A vacuum pump is also provided, which comprises the screw rotor cooling structure.
The technical scheme of the utility model has the following advantages:
1. the screw rotor cooling structure provided by the utility model is characterized in that one end of the rotor body is provided with a blind hole suitable for containing cooling liquid, the end part of the rotor body is rotatably connected with a flow guide block, the flow guide block is connected with a flow guide pipe, the flow guide pipe extends into the blind hole, a gap is arranged between the flow guide pipe and the inner wall of the blind hole, a liquid inlet and a liquid outlet are arranged on the flow guide block, cooling liquid flows into the flow guide pipe through the liquid inlet and then flows into the blind hole through the flow guide pipe, the cooling liquid flows in the blind hole, the cooling liquid continuously flows into the blind hole through the flow guide pipe, the cooling liquid can flow to the liquid outlet through the gap between the flow guide pipe and the inner wall of the blind hole and flows out through the liquid outlet, so that the cooling liquid circularly flows in the rotor body, the rotor body is cooled, so that the rotor body is prevented from deforming due to friction heat and compression heat generated during working, and the normal operation of the vacuum pump is ensured.
2. According to the screw rotor cooling structure provided by the utility model, the liquid inlet is arranged in the axial direction of the flow guide block, the liquid outlet is arranged in the radial direction of the flow guide block, the liquid inlet is connected with the liquid inlet pipe joint, and the liquid outlet is connected with the liquid outlet pipe joint.
3. According to the screw rotor cooling structure provided by the utility model, the axis of the flow guide pipe is overlapped with the axis of the blind hole, so that an annular gap is formed between the flow guide pipe and the inner wall of the blind hole, cooling liquid can cool the inner wall of the blind hole through the annular gap, the cooling of the interior of the rotor body is realized, the temperature of the rotor body during working is further reduced, meanwhile, the cooling liquid flows outside the flow guide pipe, the heat conduction can be further accelerated, and the temperature of the interior of the rotor body is reduced.
4. According to the screw rotor cooling structure provided by the utility model, the connecting joint is arranged at the end part of the rotor body, the flow guide block is rotatably arranged on the connecting joint, and the rolling bearing is arranged between the flow guide block and the connecting joint, so that the interior of the rotor body is cooled while the work of the rotor body is not influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a screw rotor cooling structure provided in an embodiment of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Description of reference numerals:
1. a rotor body; 2. connecting a joint; 3. a bearing retainer ring; 4. a rolling bearing; 5. an O-shaped sealing ring; 6. a liquid inlet pipe joint; 7. a flow guide pipe; 8. a flow guide block; 9. a gasket; 10. a transition joint; 11. blind holes; 12. and a liquid outlet pipe joint.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
This embodiment provides a concrete implementation mode of screw rotor cooling structure, as shown in fig. 1 and fig. 2, offer the blind hole 11 that is suitable for holding the coolant liquid in the one end of rotor body 1, end rotation at rotor body 1 is connected with water conservancy diversion piece 8, water conservancy diversion piece 8 one end is connected with honeycomb duct 7, honeycomb duct 7 stretches into to the blind hole 11 in, have the clearance between honeycomb duct 7 and the 11 inner walls of blind hole for coolant liquid that flows into in blind hole 11 through honeycomb duct 7 can follow the clearance and flow out. The inlet and the liquid outlet have been seted up on water conservancy diversion piece 8, the inlet communicates with honeycomb duct 7, the liquid outlet communicates with the clearance between honeycomb duct 7 and the 11 inner walls of blind hole, the coolant liquid flows into honeycomb duct 7 through the inlet, flow into in blind hole 11 behind honeycomb duct 7, the coolant liquid flows in the clearance between blind hole 11 inner wall and honeycomb duct 7, the coolant liquid flows to the liquid outlet through the clearance between blind hole 11 inner wall and honeycomb duct 7, flow out through the liquid outlet, the circulation that flows of coolant liquid is formed inside blind hole 11, cool off rotor body 1 inside, the coolant liquid is in honeycomb duct 7 continuous flow direction blind hole 11, make the coolant liquid circulate and flow in rotor body 1, cool off rotor body 1, prevent that rotor body 1 from taking place to warp because of the frictional heat and the compression heat that produce at the during operation, guarantee the normal operating of vacuum pump.
In this embodiment, because water conservancy diversion piece 8 rotates and installs on rotor body 1, the annular holding tank has on the water conservancy diversion piece 8, rotor body 1 can rotate and install in the annular holding tank, the inlet setting is on the axial direction of water conservancy diversion piece 8, the liquid outlet sets up on the radial direction of water conservancy diversion piece 8, and be connected with feed liquor coupling 6 at the inlet, the liquid outlet is connected with liquid outlet pipe joint 12, through the coupling, can be convenient for inlet and liquid outlet and coolant liquid be connected, the circulation of the coolant liquid of being convenient for.
Specifically, the liquid outlet pipe joint 12 can be communicated to the liquid inlet pipe joint 6, so that internal circulation of the cooling liquid is realized.
Specifically, be equipped with transition joint 10 between feed liquor union coupling 6 and the water conservancy diversion piece 8 for the inlet can be connected with the feed liquor union coupling 6 of multiple model through transition joint 10. A sealing gasket 9 is arranged between the transition joint 10 and the flow guide block 8.
In this embodiment, the axis of honeycomb duct 7 and the axis coincidence setting of blind hole 11 for form annular gap between honeycomb duct 7 and the blind hole 11 inner wall, the coolant liquid can cool off blind hole 11 inner wall through annular gap, the realization is to the inside cooling of rotor body 1, and then reduces the temperature of rotor body 1 during operation, and simultaneously, the coolant liquid flows in honeycomb duct 7's the outside, can further accelerate heat-conduction, reduces the inside temperature of rotor body 1.
Install attach fitting 2 on the tip of rotor body 1, water conservancy diversion piece 8 rotates and installs on attach fitting 2 to be equipped with antifriction bearing 4 between water conservancy diversion piece 8 and attach fitting 2, when not influencing rotor body 1 work, cool off rotor body 1 inside. One side of the rolling bearing 4 is provided with a bearing retainer ring 3.
Specifically, still be equipped with O type sealing washer 5 between water conservancy diversion piece 8 and attach fitting 2, increase sealed effect, prevent that the coolant liquid from flowing out.
Example 2
This embodiment provides a specific implementation of vacuum pump, adopts the screw rotor cooling structure among embodiment 1 to cool off the screw rotor in the vacuum pump, wherein, the cooling structure can set up in the vacuum pump outside, with screw rotor end connection can to the cooling structure can not rotate with screw rotor synchronous, avoids influencing the work of vacuum pump.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the utility model.
Claims (8)
1. A screw rotor cooling structure, comprising:
a rotor body (1), one end of which is provided with a blind hole (11) suitable for containing cooling liquid;
the flow guide block (8) is connected with a flow guide pipe (7), the flow guide pipe (7) is suitable for extending into the blind hole (11), the flow guide block (8) is rotatably connected with the end part of the rotor body (1), and a gap allowing liquid to flow is formed between the flow guide pipe (7) and the inner wall of the blind hole (11);
the flow guide block (8) is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the flow guide pipe (7), and the liquid outlet is communicated with the gap.
2. Screw rotor cooling according to claim 1, wherein the liquid inlet is arranged in the axial direction of the flow guide block (8);
the liquid outlet is arranged in the radial direction of the flow guide block (8).
3. Screw rotor cooling structure according to claim 2, characterized in that the liquid inlet is connected with a liquid inlet pipe joint (6);
the liquid outlet is connected with a liquid outlet pipe joint (12).
4. Screw rotor cooling structure according to claim 1, characterized in that the axis of the draft tube (7) coincides with the axis of the blind hole (11).
5. Screw rotor cooling structure according to claim 1, characterized in that the rotor body (1) is mounted with a connection joint (2) on the end connected with the deflector block (8), the deflector block (8) being rotatably mounted on the connection joint (2).
6. Screw rotor cooling according to claim 5, characterized in that a rolling bearing (4) is provided between the deflector block (8) and the connection joint (2).
7. Screw rotor cooling according to claim 5, characterized in that an O-ring seal (5) is provided between the deflector block (8) and the connection joint (2).
8. Vacuum pump, characterized in that it comprises a screw rotor cooling structure according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123231455.9U CN216381864U (en) | 2021-12-20 | 2021-12-20 | Screw rotor cooling structure and vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123231455.9U CN216381864U (en) | 2021-12-20 | 2021-12-20 | Screw rotor cooling structure and vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216381864U true CN216381864U (en) | 2022-04-26 |
Family
ID=81235916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123231455.9U Active CN216381864U (en) | 2021-12-20 | 2021-12-20 | Screw rotor cooling structure and vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216381864U (en) |
-
2021
- 2021-12-20 CN CN202123231455.9U patent/CN216381864U/en active Active
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