CN201358919Y - Balanced double screw compressor - Google Patents
Balanced double screw compressor Download PDFInfo
- Publication number
- CN201358919Y CN201358919Y CNU2009201417971U CN200920141797U CN201358919Y CN 201358919 Y CN201358919 Y CN 201358919Y CN U2009201417971 U CNU2009201417971 U CN U2009201417971U CN 200920141797 U CN200920141797 U CN 200920141797U CN 201358919 Y CN201358919 Y CN 201358919Y
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- China
- Prior art keywords
- screw
- pump housing
- screw rod
- dividing plate
- screw compressor
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- Expired - Fee Related
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Abstract
The utility model provides a balanced double screw compressor which is characterized in that the middle part of an inner cavity of a pump body is provided with a clapboard vertical to the axial direction of the screws, the clapboard separates a working chamber inside the pump body into two, the size and shape of spiral teeth on the screw section at the two sides of the clapboard are same, the directions of turning are opposite, the pump body wall is provided with air inlets respectively corresponding to the two working chambers, and the middle part of the pump body wall in the axial direction is provided with air outlets for the two working chambers to discharge air. The balanced double screw compressor has the effects that: 1. the service life is long and axial force damage to parts does not exist; 2. the sensitivity to impurity and carbide is low, and noise and vibration are greatly reduced; and 3. the parts have scientific and reasonable structure, save materials and are convenient for maintenance.
Description
Technical field:
The utility model relates to a kind of improved helical-lobe compressor, particularly a kind of balanced type double-screw compressor.
Background technique:
Helical-lobe compressor is the key equipment of oil, petroleum chemical enterprise's device for recovering combustible gas, and can it normally move normal operation and the economic benefit that is directly connected to device for recovering combustible gas.Owing to contain inflammable gas or poisonous gas in the tail gas of oil refinery, break down as compressor, will cause operation upward unscheduled maintenance or shut-down, except that causing heavy economic losses, bring many safety problems also can for refinery factory, simultaneously serious environment pollution.Existing helical-lobe compressor is a kind of single suction unbalanced double-screw compressor.It mainly is made of screw rod, mechanical seal, bearing, the pump housing, forward and backward bearing, the forward and backward lid of integrity, and it has a suction port, an air outlet and an active chamber.The deficiency that this helical-lobe compressor in use exists is: 1, working life is short, easy break-down, this is that this compressor has only a suction port, at screw rod in when acting, can produce a very big axial force on the screw rod, this axial force has very big infringement to positioning bearing, have a strong impact on the working life of positioning bearing, also there is the danger that makes screw rod that off-axis be arranged in this axial force simultaneously, the mechanical seal at place, air outlet is subjected to the influence of outlet pressure in addition, also shorten greatly working life, and working life and macrocyclic stable operation that these all badly influence compressor also exist potential safety hazard; 2, the receptance to impurity and carbide is strong, noise and vibration are also bigger, this is that this compressor only has an active chamber, compressed action is all finished in an active chamber, when process parameter (flow, a pressure) timing, needs pump have bigger rotating speed just can reach corresponding power, the rotating speed of pump increases, correspondingly also just increase noise, vibration and, thereby the probability that breaks down increases also to the receptance of impurity and carbide; 3, screw rod is the integrity structure, this structure exists the waste on the material, because the periphery of screw rod is in case wearing and tearing, whole screw rod will be scrapped and change, different piece on the screw rod requires differently to the character of material in addition, need good wear resistance as the side face of screw rod, and the central part of screw rod uses as axle, need good rigidity, and the screw rod of integrity is difficult to satisfy this requirement aspect two man-hour adding.
Summary of the invention:
The purpose of this utility model is the deficiency that in use exists at existing helical-lobe compressor, and proposes a kind of long service life, stable, noise and vibration is little, modular construction is scientific and reasonable, easy to maintenance balanced type double-screw compressor.
Can realize the purpose of this utility model by following technical proposals, a kind of balanced type double-screw compressor, comprise screw rod, mechanical seal, bearing, the pump housing, forward and backward bearing, forward and backward lid, it is characterized in that, be provided with the axial dividing plate of vertical screw at pump housing inner chamber middle part, dividing plate is divided into two with active chamber in the pump housing, the helical tooth size shape of dividing plate both sides spiro rod section is identical, rotation direction is reverse, corresponding two active chambers, respectively be provided with corresponding suction port on pump housing wall, axially the middle part is provided with for two air outlets that active chamber is given vent to anger on pump housing wall.
For saving material and making parts have high sexual valence when to be convenient to maintenance, screw rod is an assembly parts, is made of axle and the screw-casing that is positioned on the axle with the radial location key.
Dividing plate is fixed on the pump housing, for preventing the wearing and tearing of screw rod to dividing plate, is provided with the screw rod back-up ring between dividing plate and screw rod.
For preventing that swivel nut from moving axially, between screw rod and rear support, be provided with and cap.
For ease of maintenance and installation, the pump housing is made of two halfbodies axially cutting open.
Effect of the present utility model is: 1, long service life, parts there is not the axial force infringement, and this is that this device is provided with two active chambers and two corresponding suction ports, and screw rod is identical in the helical tooth size shape of dividing plate both sides spiro rod section, and rotation direction is reverse; Screw rod is when acting (flow parameter of two suction ports is identical), the axial Pneumatic pressure equal and opposite in direction that the both sides spiro rod section produces, and direction is opposite, reaches autobalance; The unidirectional axial force of infringement positioning bearing, mechanical seal and screw axis does not exist, thereby can greatly be increased the working life of these parts, and this has guaranteed that compressor has long working life and can macrocyclic stable operation, has also eliminated potential safety hazard.2, the receptance to impurity and carbide is low, noise and vibration greatly reduce, and this is that this device adopts the double suction structure, the pump that is equivalent to two same specifications is worked at the same time, therefore when process parameter (flow, a pressure) timing, the rotating speed of pump can reduce 30-50%, thereby reduces noise and vibration, minimizing is to the receptance of impurity and carbide, also reduce the source of trouble, improved the force-bearing situation of main frame, improved the working life of helical-lobe compressor greatly.3, scientific and reasonable, the saving material of modular construction, easy to maintenance, because the screw rod as this device main part adopts assembling unit structure, constitute by axle and the screw-casing that is positioned on the axle with the radial location key, screw-casing has worn and torn and only need change screw-casing and get final product, axle can continue to use, and needs whole screw rod to change unlike existing screw rod, can be enterprise and saves material cost; In addition, screw rod adopts assembling unit structure, during the processing screw-casing, can focus on the raising of its wear-resisting property, and when axle processing, can select high-intensity special material for use and heat-treat separately, can effectively improve the rigidity of axle, improve stability, Safety performance and the working life of main frame.
Below in conjunction with embodiment the utility model is further set forth:
Description of drawings:
Accompanying drawing 1 is a schematic appearance of the present utility model;
Accompanying drawing 2 is the generalized section of the utility model structure.
Embodiment:
Referring to accompanying drawing 1,2, a kind of balanced type double-screw compressor, it comprises protecgulum 1, axially locating bearing 2, radial location bearing 4, preceding bearing 3, mechanical seal 5, suction port 6, radial location key 7, screw-casing 8, driving shaft 9, driven shaft 10, air outlet 11, dividing plate 12, screw rod back-up ring 13, the pump housing 14 and cap 15, rear support 16, gear 17, bonnet 18, (screw-casing 8 had both referred to the left and right screw-casing on the driving shaft 9, also referred to the left and right screw-casing of driven shaft 10).For saving material and making parts have high sexual valence when to be convenient to maintenance, the screw rod in this example is an assembly parts, and initiatively screw rod is formed by driving shaft 9 with the screw-casing 8 that radial location key 7 is positioned on the axle; Driven screw rod is formed by driven shaft 10 with the screw-casing 8 that radial location key 7 is positioned on the axle; Screw rod also can be made as integrity as required.For ease of maintenance and installation, the pump housing 14 can be made as by two halfbodies axially cutting open and constitute.
The formation of present embodiment is: be provided with the axial dividing plate 12 of vertical driving shaft 9 or driven shaft 10 at the pump housing 14 inner chambers middle parts, dividing plate 12 is divided into two with active chambers in the pump housing 14.9 sections helical tooth size shape that go up set screw-casing 8 of dividing plate 12 both sides driving shafts are identical, and rotation direction is reverse; 10 sections helical tooth size shape that go up set screw-casing 8 of dividing plate 12 both sides driven shafts are identical, and rotation direction is reverse.Corresponding two active chambers respectively are provided with corresponding suction port 6 on the pump housing 14 walls, axially the middle part is provided with air outlet 11 on the pump housing 14 walls.Dividing plate 12 is fixed on the pump housing 14, for preventing the wearing and tearing of driving shaft 9 or 10 pairs of dividing plates 12 of driven shaft, is provided with screw rod back-up ring 13 between dividing plate 12 and driving shaft 9 or driven shaft 10.For prevent that screw-casing 8 from moving axially to the left side, is provided with and cap 15 between screw-casing 8 and rear support 16.Driving shaft 9 is fixed on preceding bearing 3 and the rear support 16 by two axially locating bearings 2 and two radial location bearings 4.Driven shaft 10 is fixed on preceding bearing 3 and the rear support 16 by two axially locating bearings 2 and two radial location bearings 4.Driving shaft 9 left parts and right part respectively are provided with a cover mechanical seal 5.Driven shaft 10 left parts and right part respectively are provided with a cover mechanical seal 5.On the protecgulum 1 fixing preceding bearing 3.Bonnet 18 is fixed on rear support 16.Gear 17 is fixed on driving shaft 9 and driven shaft 10 left parts.
Claims (5)
1, a kind of balanced type double-screw compressor, comprise screw rod, mechanical seal, bearing, the pump housing, forward and backward bearing, forward and backward lid, it is characterized in that, be provided with the axial dividing plate of vertical screw at pump housing inner chamber middle part, dividing plate is divided into two with active chamber in the pump housing, and the helical tooth size shape of dividing plate both sides spiro rod section is identical, rotation direction is reverse, corresponding two active chambers respectively are provided with corresponding suction port on pump housing wall, axially the middle part is provided with for two air outlets that active chamber is given vent to anger on pump housing wall.
2, by the described balanced type double-screw compressor of claim 1, it is characterized in that screw rod is an assembly parts, constitute by axle and the screw-casing that is positioned on the axle with the radial location key.
3, by the described balanced type double-screw compressor of claim 1, it is characterized in that dividing plate is fixed on the pump housing, between dividing plate and screw rod, be provided with the screw rod back-up ring.
4, by the described balanced type double-screw compressor of claim 1, it is characterized in that, between screw rod and rear support, be provided with and cap.
5, by claim 1 or 2 or 3 or 4 described balanced type double-screw compressors, it is characterized in that the pump housing is made of two halfbodies axially cutting open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201417971U CN201358919Y (en) | 2009-02-26 | 2009-02-26 | Balanced double screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201417971U CN201358919Y (en) | 2009-02-26 | 2009-02-26 | Balanced double screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358919Y true CN201358919Y (en) | 2009-12-09 |
Family
ID=41424682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201417971U Expired - Fee Related CN201358919Y (en) | 2009-02-26 | 2009-02-26 | Balanced double screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358919Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805002A (en) * | 2016-05-03 | 2016-07-27 | 华东交通大学 | Double-suction balance type double-screw compressor |
| US11268512B2 (en) | 2017-01-11 | 2022-03-08 | Carrier Corporation | Fluid machine with helically lobed rotors |
-
2009
- 2009-02-26 CN CNU2009201417971U patent/CN201358919Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805002A (en) * | 2016-05-03 | 2016-07-27 | 华东交通大学 | Double-suction balance type double-screw compressor |
| US11268512B2 (en) | 2017-01-11 | 2022-03-08 | Carrier Corporation | Fluid machine with helically lobed rotors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20160226 |