CN214533527U - Screw vacuum pump for condensation with keep off dirt function - Google Patents
Screw vacuum pump for condensation with keep off dirt function Download PDFInfo
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- CN214533527U CN214533527U CN202022562469.8U CN202022562469U CN214533527U CN 214533527 U CN214533527 U CN 214533527U CN 202022562469 U CN202022562469 U CN 202022562469U CN 214533527 U CN214533527 U CN 214533527U
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- sealing device
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Abstract
The utility model relates to a screw vacuum pump for condensation with keep off dirt function, screw vacuum pump contains the pump body (101), install motor (102) at the pump body (101) right-hand member, rotate a pair of screw rod (103) of installing inside the pump body (101) and being connected with motor (102) transmission through both ends bearing, the position that is close to tip bearing on screw rod (103) is epaxial is equipped with seal structure (104), seal structure (104) contain from a left side to the right side set up at the epaxial sealing device (201) of screw rod (103) and oil sealing device (204), be equipped with between sealing device (201) and oil sealing device (204) and keep off dirt circle (202) and dust collecting cavity (203). The utility model relates to a screw vacuum pump for condensation with keep off dirt function, simple structure can prevent effectively that the interior dust of the vacuum pump body from getting into the screw rod bearing, extension vacuum pump maintenance cycle, reduction fault rate.
Description
Technical Field
The utility model relates to a screw vacuum pump for condensation with keep off dirt function belongs to vacuum apparatus technical field.
Background
The vacuum system condensation technology is one of the widely applied processes in the industries of chemical engineering, pharmacy and the like, is generally applied to the process flows of drying, fractionation, purification, refining and the like, generally uses a screw vacuum pump to ensure high vacuum degree under the condition of high vacuum degree requirement, but the bearings of the traditional screw vacuum pump are easy to enter ash so as to cause the bearing to be stuck and damaged, and have high failure rate and frequent maintenance.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide a screw vacuum pump for condensation that has the dust blocking function dustproof effectual, that the fault rate is low, the maintenance cycle is long.
The purpose of the utility model is realized like this:
a screw vacuum pump for condensation with a dust blocking function comprises a pump body, a motor arranged at the right end of the pump body, and a pair of screws which are rotatably arranged in the pump body through bearings at two ends and are in transmission connection with the motor; a sealing structure is arranged on the screw shaft close to the end bearing; the sealing structure comprises a sealing device and an oil sealing device which are arranged on the screw shaft from left to right, and a dust blocking ring and a dust collecting cavity are arranged between the sealing device and the oil sealing device; the dust collecting cavity is an annular cavity body arranged between the dust blocking ring and the oil sealing device, the upper layer of the dust collecting cavity is communicated with a dust removing port arranged on the top surface of the pump body through a pipeline, the lower layer of the dust collecting cavity is communicated with a dust discharging port arranged on the bottom surface of the pump body through a pipeline, and the screw shaft penetrates through the left side surface and the right side surface of the dust collecting cavity; the dust blocking ring is positioned in the dust collecting cavity and sleeved on the screw shaft, and the outer circle diameter of the dust blocking ring is larger than that of the sealing ring.
When the screw vacuum pump works, dust particles in the pump body of the screw vacuum pump are blocked by the sealing device and then are thrown into the dust collection cavity by the dust blocking ring in a rotating mode for collection, so that the dust particles are prevented from entering the oil sealing device and further threatening the operation of a bearing; when the equipment is maintained, nitrogen is introduced from the dust removal port to discharge the dust in the dust collection cavity out of the pump body from the dust discharge port, or a dust suction device is connected to the dust discharge port to suck the dust in the dust collection cavity out of the pump body.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses set up dust ring and dust collecting chamber in screw rod shaft seal, will follow the internal dust that overflows of vacuum pump and collect the concentrated discharge pump body in the dust collecting chamber, prevent that it from getting into the screw rod bearing and damaging the bearing, overall structure is simple, dustproof effectual, has reduced screw vacuum pump's fault rate, has prolonged the maintenance cycle of vacuum pump.
Drawings
Fig. 1 is a schematic structural view of a screw vacuum pump for condensation with a dust-blocking function according to the present invention.
Fig. 2 is the utility model relates to a screw vacuum pump for condensation seal structure schematic diagram with keep off dirt function.
Fig. 3 is a schematic view of the dust collecting chamber of the screw vacuum pump for condensation with dust blocking function of the present invention.
Fig. 4 is the enlarged schematic view of the dust-blocking ring and the dust-collecting chamber of the screw vacuum pump for condensation with the dust-blocking function.
Wherein:
the pump body 101, the motor 102, the screw 103 and the sealing structure 104;
a sealing device 201, a dust baffle ring 202, a dust collection cavity 203, an oil sealing device 204, a dust removal port 209 and a dust exhaust port 210.
Detailed Description
Referring to fig. 1 to 4, the screw vacuum pump for condensation with a dust blocking function according to the present invention comprises a pump body 101, a motor 102 installed at the right end of the pump body 101, and a pair of screws 103 rotatably installed inside the pump body 101 through bearings at both ends and in transmission connection with the motor 102; a sealing structure 104 is arranged on the shaft of the screw 103 near the end bearing; the sealing structure 104 comprises a sealing device 201 and an oil sealing device 204 which are arranged on the shaft of the screw 103 from left to right, and a dust blocking ring 202 and a dust collecting cavity 203 are arranged between the sealing device 201 and the oil sealing device 204; the dust collection cavity 203 is an annular cavity body arranged between the dust ring 202 and the oil seal device 204, the upper layer of the dust collection cavity 203 is communicated with a dust removal port 209 arranged on the top surface of the pump body 101 through a pipeline, the lower layer of the dust collection cavity 203 is communicated with a dust discharge port 210 arranged on the bottom surface of the pump body 101 through a pipeline, and the shaft of the screw 103 penetrates through the left side surface and the right side surface of the dust collection cavity 203; the dust blocking ring 202 is positioned in the dust collecting cavity 203 and sleeved on the shaft of the screw 103, and the outer diameter of the dust blocking ring 202 is larger than that of the sealing device 201.
When the screw vacuum pump works, dust particles in the screw vacuum pump body 101 are blocked by the sealing device 201 and then are thrown into the dust collection cavity 203 by the dust blocking ring 202 in a rotating mode to be collected, so that the dust particles are prevented from entering the oil sealing device 204, and further the bearing operation is threatened; during maintenance of the equipment, nitrogen is introduced from the dust removal port 209 to discharge dust in the dust collection chamber 203 out of the pump body 101 through the dust discharge port 210, or a dust suction device is connected to the dust discharge port 210 to suck dust in the dust collection chamber 203 out of the pump body 101.
In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.
Claims (2)
1. The utility model provides a screw vacuum pump for condensation with keep off dirt function, screw vacuum pump contains the pump body (101), installs motor (102) at pump body (101) right-hand member, rotates a pair of screw rod (103) of installing inside the pump body (101) and being connected with motor (102) transmission through both ends bearing, is equipped with seal structure (104) in the epaxial position that is close to the tip bearing of screw rod (103), and seal structure (104) contain from a left side to the right side and set up at the epaxial sealing device (201) of screw rod (103) and oil blanket device (204), its characterized in that: a dust blocking ring (202) and a dust collecting cavity (203) are arranged between the sealing device (201) and the oil sealing device (204); the dust collection cavity (203) is an annular cavity arranged between the dust blocking ring (202) and the oil seal device (204), the upper layer of the dust collection cavity (203) is communicated with a dust removal port (209) arranged on the top surface of the pump body (101) through a pipeline, the lower layer of the dust collection cavity (203) is communicated with a dust removal port (210) arranged on the bottom surface of the pump body (101) through a pipeline, and a screw rod (103) shaft penetrates through the left side surface and the right side surface of the dust collection cavity (203); the dust blocking ring (202) is positioned in the dust collecting cavity (203) and sleeved on the shaft of the screw rod (103).
2. A screw vacuum pump for condensation having a dust-blocking function according to claim 1, characterized in that: the outer circle diameter of the dust blocking ring (202) is larger than that of the sealing device (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022562469.8U CN214533527U (en) | 2020-11-09 | 2020-11-09 | Screw vacuum pump for condensation with keep off dirt function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022562469.8U CN214533527U (en) | 2020-11-09 | 2020-11-09 | Screw vacuum pump for condensation with keep off dirt function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214533527U true CN214533527U (en) | 2021-10-29 |
Family
ID=78287722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022562469.8U Active CN214533527U (en) | 2020-11-09 | 2020-11-09 | Screw vacuum pump for condensation with keep off dirt function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214533527U (en) |
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2020
- 2020-11-09 CN CN202022562469.8U patent/CN214533527U/en active Active
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