CN205714762U - A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure - Google Patents
A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure Download PDFInfo
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- CN205714762U CN205714762U CN201620555599.XU CN201620555599U CN205714762U CN 205714762 U CN205714762 U CN 205714762U CN 201620555599 U CN201620555599 U CN 201620555599U CN 205714762 U CN205714762 U CN 205714762U
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Abstract
This utility model relates to a kind of screw vacuum pump, and a kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure, belongs to screw pump and seals technical field of structures.It includes the pump housing, and the exhaust end of the pump housing connects drive end bearing bracket, and the exhaust end of power rotor and passive rotor connects drive end bearing bracket by angular contact ball bearing, is equipped with exhaust end and seals structure between drive end bearing bracket and power rotor, passive rotor；The inlet end of the pump housing connects rear end cap, and the suction end of power rotor and passive rotor connects rear end cap by deep groove ball bearing, is equipped with suction end and seals structure between rear end cap and power rotor, passive rotor.This utility model uses the mechanism of mechanical seal at exhaust end, it is ensured that the cleaning of discharge end bearings, gear and lubricating oil is clean；At suction end owing to population pressure is less than atmospheric pressure, therefore rear end cap seals and can use piston ring packing, thus ensures that screw pump can work long hours.
Description
Technical field
This utility model relates to a kind of screw vacuum pump, specifically one and has seal structure for piston ring and machinery is close
The screw vacuum pump that seal structure combines, belongs to screw pump and seals technical field of structures.
Background technology
Screw pump vacuum is the mechanical pump of a kind of novel intake-gas, and feature is that structure is relatively easy, advanced technology, right
Intake-gas is insensitive.Pumping speed scope is wide, pollution-free.Can combine with lobe pump etc., meet big rate of air sucked in required, condition of high vacuum degree, mental retardation
The advantage of consumption, it is also possible to be used alone, have wide range of applications, be the substitute products of the mechanical pump such as sliding vane rotary pump, water ring pump.
In prior art, the axle head of screw vacuum pump plays sealing effectiveness by arranging outside framework oil seal, but transports for a long time
Row easily makes axle head fever expansion, outside framework oil seal abrasion accelerate, and has influence on sealing effectiveness, affects screw vacuum pump time serious
Normal use.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, thus provides one to have piston ring packing and machine envelope
Seal the screw vacuum pump of structure, it is possible to while ensureing sealing effectiveness, there is good radiating effect, it is to avoid screw shaft is fast
The situation that speed heats up occurs, it is ensured that screw vacuum pump can work long hours.
The technical scheme provided according to this utility model, one has seal structure for piston ring and ties mutually with mechanical seal structure
The screw vacuum pump closed includes that the pump housing, the pump housing are provided with air entry, is provided with power rotor and passive rotor side by side, actively in the pump housing
The exhaust end of rotor connects motor by shaft coupling, and power rotor drives passive rotor one by meshed gears drive mechanism
Play synchronous backward to rotate, it is characterized in that: the exhaust end of the pump housing connects drive end bearing bracket, and the exhaust end of power rotor and passive rotor passes through
Angular contact ball bearing connects drive end bearing bracket, is equipped with exhaust end and seals structure between drive end bearing bracket and power rotor, passive rotor；
Described exhaust end seals structure and includes prelocalization dish, machine envelope axle sleeve, mechanical seal, stationary seat, piston ring seat and work
Plug ring, is arranged side by side before and after machine envelope axle sleeve and piston ring seat, and piston ring seat outer ring is provided with multiple piston ring, and piston ring seat outer ring sets
Having prelocalization dish, multiple piston rings are fixed in piston ring seat by prelocalization dish, and machine envelope axle sleeve outer ring is provided with stationary seat, and machine envelope is quiet
Ring is fixed in stationary seat；
The inlet end of the pump housing connects rear end cap, after the suction end of power rotor and passive rotor is connected by deep groove ball bearing
End cap, is equipped with suction end and seals structure between rear end cap and power rotor, passive rotor；
Described suction end seals location dish, suction end piston ring seat, suction end first piston ring, suction end after structure includes
Second piston ring and bearing block, suction end piston ring seat outer ring is provided with bearing block and rear location dish, suction end piston ring seat side by side
And between bearing block, it is provided with suction end first piston ring, it is provided with suction end second between suction end piston ring seat and rear location dish and lives
Plug ring.
Further, gear drive includes actively travelling gear and slave drive gear, at power rotor exhaust end
Being provided with actively travelling gear, be provided with driven eating on the exhaust end of passive rotor, power rotor and passive rotor pass through tooth
Wheel engagement rotation.
Further, drive end bearing bracket connects front shroud, stretches out the movable sealing structure in the external world in front shroud containing power rotor.
Further, rear end cap rear end connects back shroud, and back shroud plays the static seal work of ambient atmos and pump housing isolation
With.
Further, mechanical seal includes rotating ring and stationary ring, and stationary ring is arranged in stationary seat, and rotating ring is arranged on machine envelope axle sleeve
In, rotating ring compresses stationary ring.
Compared with the prior art this utility model has the advantage that
This utility model simple in construction, compact, reasonable, cost is relatively low, stable and reliable in work；Sealing effectiveness can ensured
While there is good radiating effect, it is to avoid situation that screw vacuum pump shaft is rapidly heated occurs, it is ensured that screw vacuum pump energy
Enough work long hours；The mechanism of mechanical seal is used, it is ensured that the cleaning of discharge end bearings, gear and lubricating oil is done at exhaust end
Only；At suction end owing to population pressure is less than atmospheric pressure, therefore rear end cap seals and can use piston ring packing, thus ensures spiral shell
Bar pump can work long hours.
Accompanying drawing explanation
Fig. 1 is this utility model front view.
Fig. 2 is enlarged drawing at A in Fig. 1.
Fig. 3 is enlarged drawing at B in Fig. 1.
Description of reference numerals: the 1-pump housing, 2-rear end cap, 3-drive end bearing bracket, 4-front shroud, 5-motor, 6-shaft coupling, 7-master
Nutating gear, 8-slave drive gear, 9-power rotor, 10-passive rotor, 11-angular contact ball bearing, 12-prelocalization dish,
13-machine envelope axle sleeve, 14-mechanical seal, 14.1-rotating ring, 14.2-stationary ring, 15-stationary seat, 16-piston ring seat, 17-piston ring,
Location dish, 22-suction end piston ring seat, 23-suction end after location dish, 19-back shroud, 20-deep groove ball bearing, 21-after 18-
One piston ring, 24-suction end the second piston ring, 25-bearing block.
Detailed description of the invention
The embodiment combined in accompanying drawing is further described by this utility model below:
As it is shown in figure 1, this utility model mainly includes the pump housing 1, in the pump housing 1, it is provided with power rotor 9 and passive rotor side by side
10, the exhaust end of power rotor 9 connects motor 5 by shaft coupling 6, drives power rotor 9 to rotate by motor 5.
Power rotor 9 drives passive rotor 10 synchronous backward together to rotate by meshed gears drive mechanism, described tooth
Wheel drive mechanism includes actively travelling gear 7 and slave drive gear 8, is provided with actively driving cog on power rotor 9 exhaust end
Wheel 7, is provided with passive rotor 10 on the exhaust end of passive rotor 10, and power rotor 9 is connected with passive rotor 10 engagement.
The pump housing 1 is provided with air entry, and gas is sucked by the air entry on the pump housing, and through power rotor 9 and passively turns
Son 10 conveying, to be compressed to exhaust end excavationg pump external.
The exhaust end of the pump housing 1 connects drive end bearing bracket 3, and drive end bearing bracket 3 front end connects front shroud 4, and front shroud 4 is by power rotor 9 He
The exhaust end of passive rotor 10 is sealed in front shroud 4.The exhaust end of power rotor 9 and passive rotor 10 passes through angular contact ball axle
Hold 11 connection drive end bearing brackets 3.Being in the gas exhaust end of screw vacuum pump at drive end bearing bracket, its pressure at expulsion should be greater than atmospheric pressure
Power, in order to stop gas, material to enter in drive end bearing bracket, therefore uses and seals reliable mechanical seal structure.Described drive end bearing bracket 3 and master
The dynamic exhaust end that is equipped with between rotor 9, passive rotor 10 seals structure.
As it is shown on figure 3, described exhaust end seals structure includes that prelocalization dish 12, machine seal axle sleeve 13, mechanical seal 14, stationary ring
Seat 15, piston ring seat 16 and piston ring 17, be arranged side by side before and after machine envelope axle sleeve 13 and piston ring seat 16, and piston ring seat 16 outer ring sets
Having multiple piston ring 17, piston ring seat 16 outer ring to be provided with prelocalization dish 12, multiple piston rings 17 are fixed on work by prelocalization dish 12
In plug ring seat 16.Machine envelope axle sleeve 13 outer ring is provided with stationary seat 15, and mechanical seal 14 is pressed on machine envelope axle sleeve 13 by stationary seat 15.
Mechanical seal 14 includes rotating ring 14.1 and stationary ring 14.2, and stationary ring 14.2 is arranged in stationary seat 15, and rotating ring 14.1 sets
Putting in machine envelope axle sleeve 13, rotating ring 14.1 compresses stationary ring 14.2.
The effect of mechanical seal 14 is to stop the gas of the pump housing, material etc. to enter at the parts such as bearing, gear, protects axle
Hold, gear and lubricating oil is from erosion.
The inlet end of the pump housing 1 connects rear end cap 2, and rear end cap 2 rear end connects back shroud 19, and back shroud 19 is by power rotor 9
Being sealed in back shroud 19 with the suction end of passive rotor 10, the suction end of power rotor 9 and passive rotor 10 passes through deep-groove ball
Bearing 20 connects rear end cap 2.In view of rear end cover structure inside is atmospheric pressure, and pump housing air entry is at rear end cap, air entry
Operating pressure answers subatmospheric power, therefore according to gas flow direction, the gas of pump housing suction inlet, material will not enter rear end cap
In, so rear end cap uses conventional piston ring packing to meet.Described rear end cap 2 and power rotor 9, passive rotor 10 it
Between be equipped with suction end seal structure.
As in figure 2 it is shown, described suction end seals location dish 21 after structure includes, suction end piston ring seat 22, suction end the
One piston ring 23, suction end the second piston ring 24 and bearing block 25, suction end piston ring seat 22 outer ring is provided with bearing block 25 side by side
With rear location dish 21, between suction end piston ring seat 22 and bearing block 25, it is provided with suction end first piston ring 23, suction end piston
Suction end the second piston ring 24 it is provided with between ring seat 22 and rear location dish 21.
This utility model simple in construction, compact, reasonable, cost is relatively low, stable and reliable in work；Sealing effectiveness can ensured
While there is good radiating effect, it is to avoid situation that screw vacuum pump shaft is rapidly heated occurs, it is ensured that screw vacuum pump energy
Enough work long hours；The mechanism of mechanical seal is used, it is ensured that the cleaning of discharge end bearings, gear and lubricating oil is done at exhaust end
Only；At suction end owing to population pressure is less than atmospheric pressure, therefore rear end cap seals and can use piston ring packing, thus ensures spiral shell
Bar pump can work long hours.
Claims (5)
1. having a piston ring packing and machine is sealed the screw vacuum pump of seal structure, including the pump housing (1), the pump housing (1) is provided with
Air entry, is provided with power rotor (9) and passive rotor (10) side by side in the pump housing (1), the exhaust end of power rotor (9) passes through shaft coupling
Device (6) connects motor (5), and power rotor (9) drives passive rotor (10) to synchronize together by meshed gears drive mechanism
Rotate backward, it is characterized in that: the exhaust end of the pump housing (1) connects drive end bearing bracket (3), power rotor (9) and the row of passive rotor (10)
Gas end connects drive end bearing bracket (3) by angular contact ball bearing (11), between drive end bearing bracket (3) and power rotor (9), passive rotor (10)
It is equipped with exhaust end and seals structure；
Described exhaust end seal structure include prelocalization dish (12), machine envelope axle sleeve (13), mechanical seal (14), stationary seat (15),
Piston ring seat (16) and piston ring (17), be arranged side by side before and after machine envelope axle sleeve (13) and piston ring seat (16), piston ring seat (16)
Outer ring is provided with multiple piston ring (17), and piston ring seat (16) outer ring is provided with prelocalization dish (12), and prelocalization dish (12) is by multiple work
Plug ring (17) is pressed in piston ring seat (16), and machine envelope axle sleeve (13) outer ring is provided with stationary seat (15), and stationary seat (15) is by machinery
Seal (14) to be pressed on machine envelope axle sleeve (13)；
The inlet end of the pump housing (1) connects rear end cap (2), and the suction end of power rotor (9) and passive rotor (10) passes through deep-groove ball
Bearing (20) connects rear end cap (2), is equipped with suction end and seals between rear end cap (2) and power rotor (9), passive rotor (10)
Structure；
Described suction end seals location dish (21), suction end piston ring seat (22), suction end first piston ring after structure includes
(23), suction end the second piston ring (24) and bearing block (25), suction end piston ring seat (22) outer ring is provided with bearing block side by side
(25) and rear location dish (21), suction end first piston ring it is provided with between suction end piston ring seat (22) and bearing block (25)
(23), suction end the second piston ring (24) it is provided with between suction end piston ring seat (22) and rear location dish (21).
A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure, it is characterized in that:
Described gear drive includes actively travelling gear (7) and slave drive gear (8), sets on power rotor (9) exhaust end
Having actively travelling gear (7), be provided with passive rotor (10) on the exhaust end of passive rotor (10), power rotor (9) is with passive
Rotor (10) engagement connects.
A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure, it is characterized in that:
Described drive end bearing bracket (3) front end connects front shroud (4), and front shroud (4) is by close for the exhaust end of power rotor (9) and passive rotor (10)
It is enclosed in front shroud (4).
A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure, it is characterized in that:
Described rear end cap (2) rear end connects back shroud (19), and back shroud (19) is by power rotor (9) and the suction end of passive rotor (10)
It is sealed in back shroud (19).
A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure, it is characterized in that:
Described mechanical seal (14) includes rotating ring (14.1) and stationary ring (14.2), and stationary ring (14.2) is arranged in stationary seat (15), rotating ring
(14.1) being arranged in machine envelope axle sleeve (13), rotating ring (14.1) compresses stationary ring (14.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620555599.XU CN205714762U (en) | 2016-06-12 | 2016-06-12 | A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620555599.XU CN205714762U (en) | 2016-06-12 | 2016-06-12 | A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714762U true CN205714762U (en) | 2016-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620555599.XU Active CN205714762U (en) | 2016-06-12 | 2016-06-12 | A kind of have a piston ring packing and machine is sealed the screw vacuum pump of seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889068A (en) * | 2016-06-12 | 2016-08-24 | 无锡市四方真空设备有限公司 | Screw vacuum pump with piston ring sealing and mechanical sealing structures |
-
2016
- 2016-06-12 CN CN201620555599.XU patent/CN205714762U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889068A (en) * | 2016-06-12 | 2016-08-24 | 无锡市四方真空设备有限公司 | Screw vacuum pump with piston ring sealing and mechanical sealing structures |
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| GR01 | Patent grant |