CN207960947U - A kind of middle wall construction for Double-stage rotary vane vacuum pump - Google Patents
A kind of middle wall construction for Double-stage rotary vane vacuum pump Download PDFInfo
- Publication number
- CN207960947U CN207960947U CN201820300862.XU CN201820300862U CN207960947U CN 207960947 U CN207960947 U CN 207960947U CN 201820300862 U CN201820300862 U CN 201820300862U CN 207960947 U CN207960947 U CN 207960947U
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- CN
- China
- Prior art keywords
- mesospore
- hole
- pump housing
- screw
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model discloses a kind of middle wall construction for Double-stage rotary vane vacuum pump, including the pump housing, mesospore, interior hexagonal tapered end holding screw and mesospore positioning pin, axis hole side on mesospore is equipped with screw hole and dowel hole, screw hole is set on the end face of mesospore, dowel hole is set on the side of mesospore, screw hole is mutually perpendicular to and is connected to dowel hole, interior hexagonal tapered end holding screw is set in screw hole, mesospore positioning pin is set in dowel hole, and locating slot is offered on pump housing inner wall.It is interference fit between original mesospore and the pump housing, forcing press need to be used to be pressed into, certain abrasion may be caused in process of press in the pump housing, and single elastic conjunction has the possibility of loosening in pump operation afterwards for a period of time, and the utility model has not only increased mesospore positioning pin newly and has prevented its loosening from also changing original interference fit as transition cooperation to position mesospore, it is installed instead of the forced installation of forcing press with pincers worker, reduces installation cost.
Description
Technical field
The utility model belongs to vacuum pump technology field, and in particular to Double-stage rotary vane vacuum pump more particularly to twin-stage rotation
The middle wall construction of chip vacuum pump.
Background technology
The mesospore 2 of existing Double-stage rotary vane vacuum pump mostly use forcing press indentation be installed in the pump housing 1, installation difficulty compared with
Height, referring to Fig. 1.There are the following problems：1, installation is laborious, is easy to cause some mechanical damages to pump in installation process；2, mesospore 2
It is interference fitted with 1 inner wall of the pump housing, single interference fit mounting means, loose phenomenon easily occurs after for a period of time in pump operation.
Utility model content
The utility model is in view of the above-mentioned problems, provide a kind of middle wall construction for Double-stage rotary vane vacuum pump.
The purpose of this utility model can be realized by following technical proposals：It is a kind of for Double-stage rotary vane vacuum pump
Middle wall construction, including the pump housing, mesospore, interior hexagonal tapered end holding screw and mesospore positioning pin, the mesospore be installed in the pump housing and
Pump body space is separated, mesospore is equipped with the axis hole passed through for pump shaft, and the axis hole side on mesospore is equipped with multiple screws
Hole and multiple dowel holes, screw hole are set on the end face of mesospore, and dowel hole is set on the side of mesospore, screw hole
It is corresponded with dowel hole, corresponding screw hole and dowel hole are mutually perpendicular to and are interconnected, the interior hexagonal tapered end
Holding screw is set in screw hole, and the mesospore positioning pin is set in dowel hole, offered on the pump housing inner wall with
Multiple corresponding locating slots of mesospore alignment pin position；When installing mesospore, the side of mesospore is in contact with pump housing inner wall and transition
Cooperation, makes each mesospore positioning pin be ejected from the side of mesospore to corresponding fixed by tightening each interior hexagonal tapered end holding screw
In the slot of position, and then mesospore is made to be fixed with the pump housing.
The beneficial effects of the utility model：It is interference fit between original mesospore and the pump housing, forcing press need to be used to be pressed into, pressure
Certain abrasion may be caused during entering to the pump housing, and single elastic conjunction has loosening afterwards for a period of time in pump operation
May, and the utility model not only increased mesospore positioning pin newly position mesospore prevent its loosening also change it is original interference fit be
Transition coordinates, and with common pincers worker installation instead of original forced installation of forcing press, installation more convenient quickly, and drops
Low installation cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the prior art.
Fig. 2 is the structural schematic diagram of the utility model.
Part numbers are as follows in figure：
1 pump housing, 101 locating slots, 2 mesospores, hexagonal tapered end holding screw, 4 mesospore positioning pins in 3.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing, those skilled in the art is made to become apparent from
How ground understanding puts into practice the utility model.Although describing the utility model in conjunction with its preferred embodiment, these
Embodiment only illustrates, rather than limits the scope of the utility model.
Referring to Fig. 2, a kind of middle wall construction for Double-stage rotary vane vacuum pump, including the pump housing 1, mesospore 2, interior hexagonal tapered end
Holding screw 3 and mesospore positioning pin 4, the mesospore 2 are installed in the pump housing 1 and 1 inner space of the pump housing are divided into two parts, mesospore
2 are equipped with the axis hole passed through for pump shaft, and the axis hole side on mesospore 2 is equipped with multiple screw holes and multiple dowel holes, screw
Hole is set on the end face of mesospore 2, and dowel hole is set on the side of mesospore 2, and screw hole and dowel hole correspond,
Corresponding screw hole and dowel hole are mutually perpendicular to and are interconnected, and the interior hexagonal tapered end holding screw 3 is set to screw
In hole, the mesospore positioning pin 4 is set in dowel hole, is offered on 1 inner wall of the pump housing and multiple mesospore positioning pins 4
Set corresponding locating slot 101；When installing mesospore 2, the side of mesospore 2 is in contact with 1 inner wall of the pump housing and transition coordinates, by twisting
Tight each interior hexagonal tapered end holding screw 3 makes each mesospore positioning pin 4 be ejected from the side of mesospore 2 to corresponding locating slot 101
It is interior, and then mesospore 2 is made to be fixed with the pump housing 1.
It should be noted that when tightening interior hexagonal tapered end holding screw 3, the tapered end of interior hexagonal tapered end holding screw 3 first with
The tapered end of corresponding mesospore positioning pin 4 contacts, due to interior hexagonal tapered end holding screw 3 and the 4 perpendicular setting of mesospore positioning pin,
With being screwed into for interior hexagonal tapered end holding screw 3, mesospore positioning pin 4 can be ejected along dowel hole from the side of mesospore 2,
The part being ejected is stretched into corresponding locating slot 101, and positioning purpose is thus reached.
It is interference fit between original mesospore 2 and the pump housing 1, forcing press need to be used to be pressed into, it may be to pump in process of press in
Body 1 causes certain abrasion, and single elastic conjunction has the possibility of loosening in pump operation afterwards for a period of time.And now change structure not
Mesospore positioning pin 4 has only been increased newly come to position mesospore 2 to prevent its loosening from also changing original interference fit be that transition coordinates, with common
Pincers worker installation reduces installation cost instead of original forced installation of forcing press, installation more convenient quickly.
It should be pointed out that for the utility model through absolutely proving, can also have a variety of transformation and the implementation of remodeling
Scheme, it is not limited to the specific embodiment of the above embodiment.Above-described embodiment as just the utility model explanation, and
It is not limitations of the present invention.In short, the scope of protection of the utility model should be including those for ordinary skill
It obviously converts or substitutes and retrofit for personnel.
Claims (1)
1. a kind of middle wall construction for Double-stage rotary vane vacuum pump, which is characterized in that including the pump housing, mesospore, interior hexagonal tapered end
Holding screw and mesospore positioning pin, the mesospore are installed in the pump housing and separate pump body space, and mesospore is equipped with and is used for
The axis hole that pump shaft passes through, the axis hole side on mesospore is equipped with multiple screw holes and multiple dowel holes, screw hole are set to mesospore
End face on, dowel hole is set on the side of mesospore, and screw hole and dowel hole correspond, corresponding screw hole
It is mutually perpendicular to and is interconnected with dowel hole, the interior hexagonal tapered end holding screw is set in screw hole, and the mesospore is fixed
Position pin is set in dowel hole, and locating slot corresponding with multiple mesospore alignment pin positions is offered on the pump housing inner wall；
When installing mesospore, the side of mesospore is in contact with pump housing inner wall and transition coordinates, by tightening each interior hexagonal tapered end holding screw
So that each mesospore positioning pin is ejected from the side of mesospore to corresponding locating slot, and then mesospore is made to be fixed with the pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820300862.XU CN207960947U (en) | 2018-03-05 | 2018-03-05 | A kind of middle wall construction for Double-stage rotary vane vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820300862.XU CN207960947U (en) | 2018-03-05 | 2018-03-05 | A kind of middle wall construction for Double-stage rotary vane vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207960947U true CN207960947U (en) | 2018-10-12 |
Family
ID=63740937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820300862.XU Expired - Fee Related CN207960947U (en) | 2018-03-05 | 2018-03-05 | A kind of middle wall construction for Double-stage rotary vane vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207960947U (en) |
-
2018
- 2018-03-05 CN CN201820300862.XU patent/CN207960947U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181012 Termination date: 20210305 |