CN209354352U - A kind of dry type double-screw compressor - Google Patents
A kind of dry type double-screw compressor Download PDFInfo
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- CN209354352U CN209354352U CN201822270955.5U CN201822270955U CN209354352U CN 209354352 U CN209354352 U CN 209354352U CN 201822270955 U CN201822270955 U CN 201822270955U CN 209354352 U CN209354352 U CN 209354352U
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- gear cover
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- type double
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Abstract
The utility model provides a kind of dry type double-screw compressor, belongs to Compressor Technology field.It solves the problems, such as the poor sealing effect of existing compressor.This dry type double-screw compressor, including the pump housing, seal closure and gear cover, intermeshing two rotors of energy are equipped in the pump housing, seal closure is arranged between the pump housing and gear cover, pressure balanced pressure pipeline in the pump housing and gear cover can be maintained by being circumscribed on gear cover, and the seal assembly that can separate the pump housing and gear cover is equipped in seal closure.This dry type double-screw compressor can improve the sealing effect of compressor.
Description
Technical field
The utility model belongs to Compressor Technology field, is related to a kind of dry type double-screw compressor.
Background technique
Compressor is a kind of driven fluid machinery that low-pressure gas is promoted to high pressure gas, and existing compressor is usual
It is divided into piston compressor, helical-lobe compressor, centrifugal compressor and linear compressor etc..
Screw rod is substantially placed in the pump housing by existing helical-lobe compressor, and is sealed by the oil liquid of lubricant reservoir
And separate the pump housing and lubricant reservoir, since the prior art is to will lead to oil using oil-tightening sealing means using oil seal
It seals the Seal Oil used and compressed medium causes to influence each other, can have following two defect, defect one: when compression is situated between
Matter is toxic corrosive gas, which can be flowed into lubricant reservoir and mix with Seal Oil, and then influence lubrication
The service life of Seal Oil in oil pocket, defect two: when Seal Oil is flowed into the pump housing, meeting be mixed with intracorporal compressed gas is pumped,
So that compressed gas is contaminated, resulting in compressed gas cannot come into operation and cannot affect spiral shell by secondary recycling
The normal operation of bar compressor, above-mentioned sealing means cannot to the pump housing with lubricant reservoir is stable being separated and being sealed, cause
Operational reliability reduces helical-lobe compressor in use, to reduce the service life of helical-lobe compressor.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, proposes a kind of dry type twin-screw compression
Machine, technical problem to be solved in the utility model are how to improve the sealing effect of compressor.
The purpose of this utility model can be realized by the following technical scheme:
A kind of dry type double-screw compressor, including the pump housing, seal closure and gear cover, interior be equipped with of the pump housing can be intermeshed
Two rotors, the seal closure is arranged between the pump housing and gear cover, which is characterized in that being circumscribed on the gear cover can tie up
Pressure balanced pressure pipeline in the pump housing and gear cover is held, the sealing that the pump housing and gear cover can be separated is equipped in the seal closure
Component.
Working principle: having intermeshing two rotors in the pump housing, at this time seal closure be setting the pump housing and gear cover it
Between, and pressure pipeline is connected on gear cover, in rotor rotation process, it is higher to pump intracorporal air pressure, and the gas in gear cover
It presses constant, therefore will cause that the pressure in gear cover is too small, and pumping intracorporal medium can be pressed onto gear cover by air pressure, and due to
It is provided with pressure pipeline, so that the pressure pumped in intracorporal pressure and gear cover maintains to balance, and seal assembly in seal closure
Setting, when so that small pressure difference occurring between the pump housing and gear cover, pumping intracorporal medium can be flowed into seal assembly, and
It may not flow into gear cover, play the effect of dual-seal, by the setting of pressure pipeline, realize the pump housing and gear cover
Between hermetic seal, and the setting of seal assembly prevents in the actual operation process when occurring between gear cover and the pump housing
When slight pressure difference, pumps intracorporal gas and be only capable of being flowed into seal assembly, realize dry seal, improve compressor
The phenomenon that sealing effect, compressor is not in gas leakage, further improves the working efficiency of compressor.
In above-mentioned dry type double-screw compressor, normal pressure air inlet is offered on the pump housing, is opened on the seal closure
It is equipped with equipped with the high pressure outlet air mouth being connected to pump housing inner cavity, in the seal closure for pumping the counter balance pocket that intracorporal gas flows into,
Pressure relief pipe is connected in the counter balance pocket, the pressure relief pipe is equipped with the check valve flowed out for air in counter balance pocket.
In compressor operation, atmosphere gas enters in the pump housing from air inlet, and the rotor of the pump housing is displacement at this time
Rotor can compress atmosphere gas, be compressed to from high pressure outlet air mouth be discharged, during the work time, when gear cover pressure not
When adjusting as pressure balance in the pump housing, the counter balance pocket that intracorporal high pressure gas can be flowed into seal closure is pumped at this time, when flat
When the intracavitary high pressure gas that weighs is excessive, check valve is opened, and the high pressure gas in counter balance pocket can be partially discharged, so as to avoid
It pumps intracorporal high pressure gas to be fed directly in gear cover, further improves the sealing effect of compressor.
In above-mentioned dry type double-screw compressor, the outlet of the pressure relief pipe is connected with normal pressure air inlet.
The setting of the structure enables the high pressure gas of discharge quickly to enter in the pump housing from normal pressure air inlet, thus
The compression effectiveness of the pump housing gets a promotion, and improves the working efficiency of compressor.
In above-mentioned dry type double-screw compressor, the pressure pipeline is connected to compressed nitrogen, on the pressure pipeline
Equipped with the switch valve that can be connected to or disconnect compressed nitrogen and be connected with gear cover.
The setting of the structure enables the gas entered in gear cover more stable, and the setting of switch valve, so that gear
Pressure control enhanced convenience in cover.
In above-mentioned dry type double-screw compressor, this compressor further includes the armature spindle being arranged for rotor, described close
Sealing assembly includes the sealing axle sleeve being set on armature spindle and the bearing block that is arranged between seal closure and gear cover, the sealing
It is bolted between cover, bearing block and gear cover, the bearing block has the sealing of energy embedding sealing cover, the sealing
The dry type axle envelope set being located in counter balance pocket is equipped in portion, the dry type axle envelope is set between sealing axle sleeve and sealing.
Using the setting of dry type axle envelope set and sealing axle sleeve, so that the sealing effect between seal assembly and gear cover is more
It is good, avoid armature spindle in the course of rotation, the high pressure gas in counter balance pocket is flowed into gear cover, reduces the phase of sub-prime
Mutually infiltration, improves the service life of compressor.
In above-mentioned dry type double-screw compressor, mounting groove is offered on the bearing block, is arranged on the armature spindle
There is the bearing that can be embedded in mounting groove.
The setting of the structure reduces the rotation friction between seal closure and armature spindle, further makes compressor
It is more convenient to use, quick.
In above-mentioned dry type double-screw compressor, the disc being set on armature spindle, institute are equipped in the gear cover
Stating has lubricant reservoir in gear cover, the disc is located in lubricant reservoir, and the pressure pipeline is connected with lubricant reservoir.
The setting of the structure so that the setting of disc is more stable, and ensure that the oil liquid in gear cover can be stablized
Be lubricated, can't flow in seal closure and the pump housing, ensure that the working environment in entire compressor is more clean.
Compared with prior art, this dry type double-screw compressor has the advantage that: by the setting of pressure pipeline, realizing
Hermetic seal between the pump housing and gear cover, and the setting of seal assembly, prevent in the actual operation process when gear cover with
When slight pressure difference occurring between the pump housing, pumps intracorporal gas and be only capable of being flowed into seal assembly, realize dry seal, mention
The phenomenon that high sealing effect of compressor, compressor is not in gas leakage, further improve the working efficiency of compressor.
Detailed description of the invention
Fig. 1 is the partial sectional view of this dry type double-screw compressor.
Fig. 2 is the partial enlarged view in Fig. 1 at A.
In figure, 1, the pump housing；11, rotor；12, normal pressure air inlet；2, seal closure；21, high pressure outlet air mouth；22, counter balance pocket；
23, pressure relief pipe；24, check valve；3, gear cover；31, pressure pipeline；32, switch valve；33, disc；34, lubricant reservoir；4,
Seal assembly；41, sealing axle sleeve；42, bearing block；43, sealing；44, dry type axle envelope set；45, mounting groove；46, bearing；5, turn
Sub- axis；6, bolt.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, this dry type double-screw compressor, including the pump housing 1, seal closure 2 and gear cover 3, the pump housing 1 is interior to be equipped with energy
Intermeshing two rotors 11, seal closure 2 are arranged between the pump housing 1 and gear cover 3.
Specifically, as depicted in figs. 1 and 2, pressure balance in the pump housing 1 and gear cover 3 can be maintained by being circumscribed on gear cover 3
Pressure pipeline 31, the seal assembly 4 that the pump housing 1 and gear cover 3 can be separated is equipped in seal closure 2.
Working principle: having intermeshing two rotors 11 in the pump housing 1, seal closure 2 is arranged in the pump housing 1 and gear at this time
Between cover 3, and pressure pipeline 31 is connected on gear cover 3, in 11 rotation process of rotor, the air pressure in the pump housing 1 is higher, and tooth
Air pressure in wheel cover 3 is constant, therefore the pressure that will cause in gear cover 3 is too small, and the medium in the pump housing 1 can be pressed onto tooth by air pressure
In wheel cover 3, and due to being provided with pressure pipeline 31, so that the pressure in the pump housing 1 maintains to balance with the pressure in gear cover 3, and
The setting of seal assembly 4 in seal closure 2, Jie when so that small pressure difference occurring between the pump housing 1 and gear cover 3, in the pump housing 1
Mass-energy is flowed into seal assembly 4, without being flowed into gear cover 3, is played the effect of dual-seal, is passed through pressure pipeline
31 setting, realizes the hermetic seal between the pump housing 1 and gear cover 3, and the setting of seal assembly 4, prevents in actual behaviour
During work when slight pressure difference occurs between gear cover 3 and the pump housing 1, the gas in the pump housing 1 is only capable of being flowed into sealing group
In part 4, dry seal is realized, improves the sealing effect of compressor, the phenomenon that compressor is not in gas leakage, further
Improve the working efficiency of compressor.
As shown in Figure 1, offer normal pressure air inlet 12 on the pump housing 1, offers on seal closure 2 and be connected to 1 inner cavity of the pump housing
High pressure outlet air mouth 21, seal closure 2 is interior to be equipped with the counter balance pocket 22 flowed into for the gas in the pump housing 1, is connected with and lets out in counter balance pocket 22
Pressure pipe road 23, pressure relief pipe 23 are equipped with the check valve 24 flowed out for air in counter balance pocket 22.
As shown in Figure 1, the outlet of pressure relief pipe 23 is connected with normal pressure air inlet 12.
As shown in Figure 1, pressure pipeline 31 is connected to compressed nitrogen, pressure pipeline 31, which is equipped with, can be connected to or disconnect compressed nitrogen
The switch valve 32 that gas is connected with gear cover 3.
As shown in Fig. 2, this compressor further includes the armature spindle 5 being arranged for rotor 11, seal assembly 4 includes being set in turn
Sealing axle sleeve 41 on sub- axis 5 and the bearing block 42 being arranged between seal closure 2 and gear cover 3, seal closure 2,42 and of bearing block
It is connected between gear cover 3 by bolt 6, bearing block 42 has the sealing 43 of energy embedding sealing cover 2, is equipped with position in sealing 43
In the dry type axle envelope set 44 in counter balance pocket 22, dry type axle envelope set 44 is arranged between sealing axle sleeve 41 and sealing 43.
As shown in Fig. 2, offering mounting groove 45 on bearing block 42, being arranged on armature spindle 5 can be embedded in mounting groove 45
Bearing 46.
As depicted in figs. 1 and 2, it is equipped with the disc 33 being set on armature spindle 5 in gear cover 3, there is profit in gear cover 3
Lubricating cavity 34, disc 33 are located in lubricant reservoir 34, and pressure pipeline 31 is connected with lubricant reservoir 34.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (7)
1. a kind of dry type double-screw compressor, including the pump housing (1), seal closure (2) and gear cover (3), the pump housing (1) is interior to be equipped with
Intermeshing two rotors (11) of energy, the seal closure (2) are arranged between the pump housing (1) and gear cover (3), and feature exists
In pressure balanced pressure pipeline (31) in the pump housing (1) and gear cover (3) can be maintained by being circumscribed on the gear cover (3), described
The seal assembly (4) that the pump housing (1) and gear cover (3) can be separated is equipped in seal closure (2).
2. dry type double-screw compressor according to claim 1, which is characterized in that offer normal pressure on the pump housing (1)
Air inlet (12) offers the high pressure outlet air mouth (21) being connected to the pump housing (1) inner cavity, the seal closure on the seal closure (2)
(2) it is equipped with the counter balance pocket (22) flowed into for the gas in the pump housing (1) in, is connected with pressure relief pipe on the counter balance pocket (22)
(23), the check valve (24) that the pressure relief pipe (23) is equipped with for the interior air outflow of counter balance pocket (22).
3. dry type double-screw compressor according to claim 2, which is characterized in that the outlet of the pressure relief pipe (23) with
Normal pressure air inlet (12) is connected.
4. dry type double-screw compressor according to claim 1 or 2 or 3, which is characterized in that the pressure pipeline (31) with
Compressed nitrogen connection, the pressure pipeline (31) are equipped with and can be connected to or disconnect compressed nitrogen and open with what gear cover (3) was connected
It closes valve (32).
5. dry type double-screw compressor according to claim 1 or 2 or 3, which is characterized in that this compressor further include for
The armature spindle (5) that rotor (11) is arranged, the seal assembly (4) include the sealing axle sleeve (41) that is set on armature spindle (5) and
The bearing block (42) being arranged between seal closure (2) and gear cover (3), the seal closure (2), bearing block (42) and gear cover
(3) it is connected between by bolt (6), the bearing block (42) has the sealing (43) of energy embedding sealing cover (2), the sealing
The dry type axle envelope set (44) being located in counter balance pocket (22) is equipped in portion (43), the dry type axle envelope set (44) is arranged in sealing axle sleeve
(41) between sealing (43).
6. dry type double-screw compressor according to claim 5, which is characterized in that offer peace on the bearing block (42)
Tankage (45) is arranged with the bearing (46) that can be embedded in mounting groove (45) on the armature spindle (5).
7. dry type double-screw compressor according to claim 5, which is characterized in that be equipped with and be arranged in the gear cover (3)
Disc (33) on armature spindle (5), the gear cover (3) is interior to have lubricant reservoir (34), and the disc (33) is located at
In lubricant reservoir (34), the pressure pipeline (31) is connected with lubricant reservoir (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270955.5U CN209354352U (en) | 2018-12-31 | 2018-12-31 | A kind of dry type double-screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822270955.5U CN209354352U (en) | 2018-12-31 | 2018-12-31 | A kind of dry type double-screw compressor |
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| Publication Number | Publication Date |
|---|---|
| CN209354352U true CN209354352U (en) | 2019-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822270955.5U Active CN209354352U (en) | 2018-12-31 | 2018-12-31 | A kind of dry type double-screw compressor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701045A (en) * | 2019-11-22 | 2020-01-17 | 海门市晶盛真空设备有限公司 | Double-screw vacuum pump |
| CN110925207A (en) * | 2019-12-02 | 2020-03-27 | 青岛科技大学 | Hydrogen circulating pump oil leakage prevention device and method thereof |
| CN112833007A (en) * | 2020-12-31 | 2021-05-25 | 浙江创为真空设备股份有限公司 | Screw pump comprehensive sealing structure |
| WO2021119879A1 (en) * | 2019-12-15 | 2021-06-24 | 江苏亚太工业泵科技发展有限公司 | Screw vacuum pump having internal nitrogen gas seal provided at gas discharge side |
| CN114352524A (en) * | 2022-03-21 | 2022-04-15 | 天津捷盛东辉保鲜科技有限公司 | Multistage supercharging type double-screw core of refrigeration compressor |
| CN115143108A (en) * | 2022-07-04 | 2022-10-04 | 淄博真空设备厂有限公司 | Screw type vacuum compressor for collecting and recycling oil gas |
-
2018
- 2018-12-31 CN CN201822270955.5U patent/CN209354352U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701045A (en) * | 2019-11-22 | 2020-01-17 | 海门市晶盛真空设备有限公司 | Double-screw vacuum pump |
| CN110925207A (en) * | 2019-12-02 | 2020-03-27 | 青岛科技大学 | Hydrogen circulating pump oil leakage prevention device and method thereof |
| WO2021119879A1 (en) * | 2019-12-15 | 2021-06-24 | 江苏亚太工业泵科技发展有限公司 | Screw vacuum pump having internal nitrogen gas seal provided at gas discharge side |
| CN112833007A (en) * | 2020-12-31 | 2021-05-25 | 浙江创为真空设备股份有限公司 | Screw pump comprehensive sealing structure |
| CN114352524A (en) * | 2022-03-21 | 2022-04-15 | 天津捷盛东辉保鲜科技有限公司 | Multistage supercharging type double-screw core of refrigeration compressor |
| CN114352524B (en) * | 2022-03-21 | 2022-05-27 | 天津捷盛东辉保鲜科技有限公司 | Multi-stage supercharging type double-screw core of refrigeration compressor |
| CN115143108A (en) * | 2022-07-04 | 2022-10-04 | 淄博真空设备厂有限公司 | Screw type vacuum compressor for collecting and recycling oil gas |
| CN115143108B (en) * | 2022-07-04 | 2024-05-28 | 淄博真空设备厂有限公司 | Screw vacuum compressor for oil gas collection and recovery |
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