CN217976601U - Nitrogen purging device for screw vacuum pump - Google Patents
Nitrogen purging device for screw vacuum pump Download PDFInfo
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- CN217976601U CN217976601U CN202221041618.9U CN202221041618U CN217976601U CN 217976601 U CN217976601 U CN 217976601U CN 202221041618 U CN202221041618 U CN 202221041618U CN 217976601 U CN217976601 U CN 217976601U
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- vacuum pump
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- nitrogen gas
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Abstract
The utility model discloses a nitrogen gas sweeps device for screw vacuum pump relates to screw vacuum pump technical field. The utility model discloses a vacuum pump body, a set of rotor and stifled gas spare are equipped with the baffle in the vacuum pump body, and the dead axle of rotor runs through the baffle, is equipped with sealing member and nitrogen gas chamber between baffle and the dead axle, and the nitrogen gas chamber is close to rotor one side and has seted up the mouth that sweeps, just has seted up the installing port with sweeping the relative position of mouth on the vacuum pump body and the baffle, and stifled gas spare includes casing, shrouding and screw rod, and the casing includes the rectangle shell, and upper portion is equipped with the swivel nut in the rectangle shell. The utility model discloses a setting up and sweeping the mouth and can communicating the cavity at nitrogen gas chamber and rotor place, the nitrogen gas source of connecting through the nitrogen gas chamber can carry out nitrogen gas and sweep work, can improve the efficiency of bleeding of vacuum pump, and can rinse, sweeps the position that the mouth is located pump body compression section simultaneously, and the passageway that nitrogen gas flows through can not be compressed by little grow, guarantees that nitrogen gas sweeps stability.
Description
Technical Field
The utility model belongs to the technical field of the screw vacuum pump, especially, relate to a nitrogen gas sweeps device for screw vacuum pump.
Background
The nitrogen purging function is as follows: after purging and cleaning the vacuum system by using dry nitrogen, nitrogen molecules can be adsorbed on the wall of the system, and other molecules such as water molecules and the like can be reduced after the wall surface is fully stained by the nitrogen molecules, so that the whole air-extracting time of the vacuum system can be greatly reduced, and the nitrogen purging device is arranged in the vacuum pump to improve the air-extracting efficiency of the vacuum system, thereby reducing the energy consumption of the pump.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a nitrogen gas sweeps device for screw vacuum pump sweeps the mouth through setting up and can carry out nitrogen gas through the nitrogen gas source that the nitrogen gas chamber is connected and sweep work with the cavity at rotor place, can improve vacuum pump's the efficiency of bleeding, and can wash, sweeps the position that the mouth is located pump body compression section simultaneously, and the passageway that nitrogen gas flowed through can not compressed by little grow, guarantees that nitrogen gas sweeps stability.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a nitrogen purging device for a screw vacuum pump, which comprises a vacuum pump body, a group of rotors and a gas blocking piece, wherein a partition plate is arranged in the vacuum pump body, an end shaft of the rotor penetrates through the partition plate, and a sealing piece and a nitrogen cavity are arranged between the partition plate and the end shaft;
a purging port is formed in one side, close to the rotor, of the nitrogen cavity;
mounting openings are formed in the vacuum pump body and the partition plate, and the blowing opening penetrates through the mounting openings;
the air blocking piece comprises a shell, a sealing plate and a screw rod;
the shell comprises a rectangular shell, a threaded sleeve is arranged at the upper part in the rectangular shell, the shell is fixed in the mounting hole and is in clearance fit with the mounting hole, a ventilation hole is arranged at the lower part of the rectangular shell, and the ventilation hole and the mounting hole are concentrically arranged;
the sealing plate is arranged in the rectangular shell in a sliding mode, the bottom end of the screw is rotatably connected with the top of the sealing plate, the screw thread of the screw is arranged in the screw sleeve, and a handle is fixed at the top end of the screw;
the shrouding both sides limit all is equipped with sealed the pad, the shrouding passes through sealed pad and rectangular shell interference fit.
Further, the sealing element comprises a mechanical seal and a double-lip sealing element, the mechanical seal and the double-lip sealing element are arranged between the partition plate and the end shaft, and the mechanical seal and the double-lip sealing element are respectively positioned on two sides of the nitrogen cavity.
Furthermore, the top end of the threaded sleeve is provided with an edge, and the edge is fixed outside the vacuum pump body through welding.
Further, be equipped with the nitrogen gas interface on the vacuum pump body, the nitrogen gas interface passes through spread groove and nitrogen gas chamber intercommunication, the spread groove sets up in the baffle.
Furthermore, the handle comprises a head, and a cross rod penetrates through the head.
Furthermore, the center of the top of the sealing plate is provided with a T-shaped rod, the bottom end of the screw rod is provided with a T-shaped groove, and the T-shaped rod is rotatably arranged in the T-shaped groove.
The utility model discloses following beneficial effect has:
1. the utility model discloses a setting up and sweeping the mouth and can communicating the cavity at nitrogen gas chamber and rotor place, the nitrogen gas source of connecting through the nitrogen gas chamber can carry out nitrogen gas and sweep work, can improve the efficiency of bleeding of vacuum pump, and can rinse, sweeps the position that the mouth is located pump body compression section simultaneously, and the passageway that nitrogen gas flows through can not be compressed by little grow, guarantees that nitrogen gas sweeps stability.
2. The utility model discloses a design neotype stifled gas spare, with the cooperation of installing port on the pump body, can effectually carry out the shutoff to sweeping the mouth, and the sealed pad that sets up makes shrouding interference setting in the rectangle shell, guarantees its sealed effect, the condition that nitrogen gas was revealed can not appear in normal evacuation during operation, and compressive capacity is stronger, life is higher.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a nitrogen purging device for a screw vacuum pump according to the present invention;
FIG. 2 is a schematic structural view of the air blocking member;
FIG. 3 is a structural sectional view of the air blocking member;
FIG. 4 is a structural section view of the air blocking member from another view angle;
in the drawings, the components represented by the respective reference numerals are listed below:
1-vacuum pump body, 2-end shaft, 3-air blocking piece, 101-partition plate, 102-nitrogen chamber, 103-purging port, 104-mounting port, 105-mechanical seal, 106-double lip seal, 107-nitrogen interface, 108-connecting groove, 301-shell, 302-closing plate, 303-screw rod, 304-rectangular shell, 305-screw sleeve, 306-air vent, 307-handle, 308-sealing gasket, 309-edge, 310-end, 311-cross rod, 312-T-shaped rod and 313-T-shaped groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention relates to a nitrogen purging device for a screw vacuum pump, which comprises a vacuum pump body 1, a set of rotors and a gas blocking member 3, wherein a partition plate 101 is arranged in the vacuum pump body 1, an end shaft 2 of the rotor penetrates through the partition plate 101, a sealing member and a nitrogen cavity 102 are arranged between the partition plate 101 and the end shaft 2, and the nitrogen cavity 102 plays a role of nitrogen sealing;
a purging opening 103 is formed in one side, close to the rotor, of the nitrogen cavity 102;
the vacuum pump body 1 and the partition plate 101 are provided with mounting ports 104, and the purging port 103 penetrates through the mounting ports 104;
the air blocking piece 3 comprises a shell 301, a closing plate 302 and a screw 303;
the shell 301 comprises a rectangular shell 304, a threaded sleeve 305 is arranged at the upper part in the rectangular shell 304, the shell 301 is fixed in the mounting port 104 and is in clearance fit with the mounting port 104, a ventilation port 306 is arranged at the lower part of the rectangular shell 304, and the ventilation port 306 and the mounting port 104 are concentrically arranged;
the closing plate 302 is arranged in the rectangular shell 304 in a sliding mode, the bottom end of the screw rod 303 is rotatably connected with the top of the closing plate 302, the screw thread of the screw rod 303 is arranged in the screw sleeve 305, and the top end of the screw rod 303 is fixedly provided with a handle 307;
sealing gaskets 308 are arranged on two side edges of the sealing plate 302, and the sealing plate 302 is in interference fit with the rectangular shell 304 through the sealing gaskets 308.
Wherein, as shown in fig. 1, the sealing elements comprise a mechanical sealing element 105 and a double-lip sealing element 106, the mechanical sealing element 105 and the double-lip sealing element 106 are arranged between the partition plate 101 and the end shaft 2, and the mechanical sealing element 105 and the double-lip sealing element 106 are respectively positioned at two sides of the nitrogen gas chamber 102.
As shown in fig. 2 to 4, the top end of the threaded sleeve 305 is provided with an edge 309, and the edge 309 is fixed outside the vacuum pump body 1 by welding.
As shown in fig. 1, a nitrogen gas port 107 is provided on the vacuum pump body 1, the nitrogen gas port 107 is communicated with the nitrogen gas chamber 102 through a connecting groove 108, the connecting groove 108 is provided in the partition plate 101, and a nitrogen gas source is connected to the nitrogen gas port 107.
As shown in fig. 2-4, the handle 307 includes a head 310, and a cross bar 311 is disposed through the head 310.
As shown in fig. 3-4, a T-shaped rod 312 is disposed at the center of the top of the closing plate 302, a T-shaped groove 313 is disposed at the bottom end of the screw 303, and the T-shaped rod 312 is rotatably disposed in the T-shaped groove 313.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides a nitrogen gas sweeps device for screw vacuum pump, includes the vacuum pump body (1) and a set of rotor, be equipped with baffle (101) in the vacuum pump body (1), baffle (101) are run through in the dead axle (2) of rotor, be equipped with sealing member and nitrogen gas chamber (102) between baffle (101) and dead axle (2), its characterized in that: also comprises an air blocking piece (3);
a purging opening (103) is formed in one side, close to the rotor, of the nitrogen cavity (102);
mounting openings (104) are formed in the vacuum pump body (1) and the partition plate (101), and the purging opening (103) penetrates through the mounting openings (104);
the air blocking piece (3) comprises a shell (301), a sealing plate (302) and a screw (303);
the shell (301) comprises a rectangular shell (304), a threaded sleeve (305) is arranged at the upper part in the rectangular shell (304), the shell (301) is fixed in the mounting port (104) and is in clearance fit with the mounting port (104), a ventilation port (306) is arranged at the lower part of the rectangular shell (304), and the ventilation port (306) and the mounting port (104) are concentrically arranged;
the sealing plate (302) is arranged in the rectangular shell (304) in a sliding mode, the bottom end of the screw rod (303) is rotatably connected with the top of the sealing plate (302), the screw rod (303) is arranged in the threaded sleeve (305) in a threaded mode, and a handle (307) is fixed to the top end of the screw rod (303);
both sides limit of shrouding (302) all is equipped with sealed pad (308), shrouding (302) are through sealed pad (308) and rectangular shell (304) interference fit.
2. A nitrogen purge arrangement for a screw vacuum pump according to claim 1, wherein the seals comprise a mechanical seal (105) and a double lip seal (106), the mechanical seal (105) and the double lip seal (106) being arranged between the diaphragm (101) and the end shaft (2), the mechanical seal (105) and the double lip seal (106) being located on either side of the nitrogen chamber (102).
3. The nitrogen purging device for the screw vacuum pump according to claim 1, wherein the top end of the threaded sleeve (305) is provided with a rim (309), and the rim (309) is fixed outside the vacuum pump body (1) through welding.
4. The nitrogen purging device for the screw vacuum pump according to claim 1, wherein a nitrogen interface (107) is arranged on the vacuum pump body (1), the nitrogen interface (107) is communicated with the nitrogen cavity (102) through a connecting groove (108), and the connecting groove (108) is arranged in the partition plate (101).
5. A nitrogen purging device for a screw vacuum pump according to claim 1, wherein the handle (307) comprises a head (310), and a cross bar (311) penetrates through the head (310).
6. The nitrogen purging device for the screw vacuum pump as claimed in claim 1, wherein a T-shaped rod (312) is provided at the top center of the sealing plate (302), a T-shaped groove (313) is provided at the bottom end of the screw (303), and the T-shaped rod (312) is rotatably provided in the T-shaped groove (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221041618.9U CN217976601U (en) | 2022-05-05 | 2022-05-05 | Nitrogen purging device for screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221041618.9U CN217976601U (en) | 2022-05-05 | 2022-05-05 | Nitrogen purging device for screw vacuum pump |
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| Publication Number | Publication Date |
|---|---|
| CN217976601U true CN217976601U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221041618.9U Active CN217976601U (en) | 2022-05-05 | 2022-05-05 | Nitrogen purging device for screw vacuum pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116428155A (en) * | 2023-04-13 | 2023-07-14 | 北京通嘉宏瑞科技有限公司 | Pump body cleaning system and pump body cleaning control method |
-
2022
- 2022-05-05 CN CN202221041618.9U patent/CN217976601U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116428155A (en) * | 2023-04-13 | 2023-07-14 | 北京通嘉宏瑞科技有限公司 | Pump body cleaning system and pump body cleaning control method |
| CN116428155B (en) * | 2023-04-13 | 2024-03-22 | 北京通嘉宏瑞科技有限公司 | Pump body cleaning system and pump body cleaning control method |
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