CN206988106U - A kind of lobe pump - Google Patents
A kind of lobe pump Download PDFInfo
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- CN206988106U CN206988106U CN201720573699.XU CN201720573699U CN206988106U CN 206988106 U CN206988106 U CN 206988106U CN 201720573699 U CN201720573699 U CN 201720573699U CN 206988106 U CN206988106 U CN 206988106U
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- China
- Prior art keywords
- housing
- convex edge
- inner sleeve
- articulamentum
- lobe pump
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- 239000000498 cooling water Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 25
- 238000005086 pumping Methods 0.000 abstract description 2
- 239000000565 sealant Substances 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a kind of lobe pump, belongs to pumping equipment technical field.It solves the technical problem such as poor sealing between the housing and liner of existing lobe pump.This lobe pump includes housing, there is the inner sleeve made of anticorrosion material in housing, cooling water channel is provided between the inwall of housing and the outer surface of inner sleeve, it is further opened with the water inlet and delivery port being connected with cooling water channel on housing, the junction of housing and inner sleeve, which is fixed with articulamentum, makes inner sleeve be fixed on the inwall of housing.Cooling water channel is offered on the inwall of the housing of this lobe pump, is connected between housing and inner sleeve by articulamentum, can internally cover acted on good heat radiating while, additionally it is possible to ensure sealing good between housing and inner sleeve.
Description
Technical field
The utility model belongs to pumping equipment technical field, is related to a kind of lobe pump.
Background technology
Roots vaccum pump abbreviation lobe pump, refer to lobed rotor of the pump built with two opposite direction synchronous rotaries, rotor
Between, between rotor and pump housing endophragm have slight gap and a kind of non-touching positive displacement vacuum pump.When lobe pump contains corruption in conveying
During corrosion medium, the medium can produce corrosion, reduction of service life to the pump housing and rotor.
In order to solve the above-mentioned technical problem, the Chinese patent literature of Application No. 201320229004.8 discloses：It is a kind of
Lobe pump with corrosion-resistant coating, including the left and right liner that screw, left shell, right shell body and material are polyhexamethylene adipamide；
Left inside to serve as a contrast the medial surface for being fitted in left shell, right liner is fitted in the medial surface of right shell body, and left inside lining is connected with right liner, left
Housing be connected with right shell body by screw and compress it is left inside lining with right liner.
Above-mentioned lobe pump has anti-corrosion function, however, liner is to be attached to by way of injection on housing, housing with
There is no cooling water channel between liner, after causing lobe pump longevity of service, interior lining heat is difficult to distribute, and if in shell
Cooling water channel is set between body and liner, for example cooling water channel is opened on the inwall of housing, then can not pass through the side of injection
Liner is attached on housing by formula, because the plastics melted during injection can be filled to cooling water channel.
The content of the invention
The utility model is directed to above mentioned problem existing for existing technology, there is provided a kind of lobe pump, the utility model are wanted
The technical problem of solution is：How housing and inner sleeve between good sealing is ensured.
The purpose of this utility model can be realized by following technical proposal：
A kind of lobe pump, including housing, housing is interior to have the inner sleeve made of anticorrosion material, it is characterised in that described
Cooling water channel is provided between the inwall of housing and the outer surface of inner sleeve, is further opened with the housing equal with the cooling water channel phase
The junction of the water inlet and delivery port of connection, the housing and inner sleeve is fixed with the inwall that articulamentum makes inner sleeve be fixed on housing
On.
Inner sleeve is fixed with the housing (i.e. the pump housing) of this lobe pump, inner sleeve is made up of anticorrosion material, and the pump housing is played very
Good corrosion-resisting function, forms cooling water channel, in Roots's pump work, by entering between the inwall of housing and the outer surface of inner sleeve
Toward in cooling water channel plus water, the water of circulation is flowed out by delivery port again at the mouth of a river, during circulation, water in cooling water channel with
Housing and inner sleeve directly contact, and water plays good thermolysis to the pump housing.Between the inwall of housing and the outer surface of inner sleeve
Need to set cooling water channel, therefore, inner sleeve can not be molded directly within the inwall of housing by way of injection.
The housing of this lobe pump can first open up cooling water channel on the inwall of housing, then by the separately fabricated shaping of inner sleeve,
Then inner sleeve is fixed in housing, because inner sleeve and housing are split-type structurals, the junction of housing and inner sleeve has gap,
In gap location coating sealant, articulamentum is formed after sealant solidification, articulamentum with inner sleeve and housing adhesion, makes interior simultaneously
Set is fixed on the inwall of housing, and articulamentum is filled with the gap between inner sleeve and housing simultaneously, makes shape between housing and inner sleeve
Into good sealing.
In a kind of above-mentioned lobe pump, the inner sleeve includes tubular body, and the inner sleeve is integral type structure, institute
Stating housing includes upper shell and lower house, and the upper shell is detachably fixed with lower house, upper shell and lower house respectively with set
The first half of body mutually reclines with lower half, and the leading section of the housing and body and the junction of rearward end are respectively and fixedly provided with the company
Connect layer.Inner sleeve more can be conveniently installed in housing by the housing of split-type structural, and the inner sleeve of integral structure can be with
Better sealing is formed between housing, and the water in cooling water channel is not flowed into inside inner sleeve, articulamentum is by body
Leading section and rearward end are each attached on housing, and the leading section of body and rearward end is formed and is sealed with housing, are further increased
The firmness of sealing and connection between shell adding body and inner sleeve.Certainly, housing can also be that left shell and right shell body are combined
Structure, this be those skilled in the art conventional technical means.
In a kind of above-mentioned lobe pump, the leading section of the housing and rearward end offer annular groove, the body
Leading section and rearward end passed respectively from the both ends of housing, each annular groove respectively around body leading section and rearward end, respectively
The articulamentum is respectively and fixedly provided with annular groove.Annular groove can accommodate more sealants, and after sealant solidifies, articulamentum was both
It is in contact with the madial wall of housing and mutually fixes, and be in contact with the lateral surface of body and mutually fix, the structure can be further
The sealing and firmness connected between increase housing and inner sleeve.
In a kind of above-mentioned lobe pump, the left side of the body and right side are partial circle and the connection of the two
With the groove that is inwardly recessed, the shape of the annular groove is consistent with the shape of body at place, the articulamentum in each annular groove with it is right
Answer the shape of annular groove consistent and be respectively provided with the protuberance put in groove on each articulamentum.Sealant is filled in annular groove,
Articulamentum is formed after solidification, the protuberance of articulamentum is put in groove, and each articulamentum forms engaging knot with the end of corresponding body
Structure, it can further increase the sealing connected between housing and inner sleeve and firmness.
In a kind of above-mentioned lobe pump, the bottom and top of the housing have air inlet and gas outlet respectively, described
The convex edge one to stretch out along being above respectively provided with the week of air inlet and air inlet, the upper and lower part of the inner sleeve is respectively provided with to extension
The convex edge two stretched, the convex edge one and convex edge two in a ring, the inwall phase of the lateral surface of each convex edge two with a convex edge one
Recline and mutually fix, each convex edge two is respectively and fixedly provided with articulamentum with the junction of the end of corresponding convex edge one.In a ring convex
The structure to be reclined along one and convex edge two-phase can increase the contact area between housing and inner sleeve, and articulamentum is to convex edge two and convex edge
One end is fixed and sealed, and further increases the sealing between housing and inner sleeve and the firmness of connection.
In a kind of above-mentioned lobe pump, open up jagged on the outer face of the convex edge one, each breach penetrates respectively
To the inwall of corresponding convex edge one, the articulamentum is fixed in corresponding breach and mutually fixed with the outer wall of convex edge two.Convex edge one
Outer face on breach can accommodate more sealants, after sealant solidifies, articulamentum both with breach on convex edge one
Side wall is in contact and mutually fixed, and is in contact with the lateral surface of convex edge two and mutually fixes, and the structure can further increase housing
The sealing and firmness being connected between liner.
In a kind of above-mentioned lobe pump, the breach is in a ring, described to be fixed on the articulamentum corresponded in breach
In a ring.Contact area between articulamentum in a ring and convex edge one and convex edge two is bigger, and the structure can further increase
The sealing and firmness connected between housing and liner.
In a kind of above-mentioned lobe pump, the convex edge to be extended internally along being above respectively provided with week of the air inlet and gas outlet
Three, in a ring, the convex edge three mutually reclines with the lateral surface of inner sleeve and mutually fixed for the convex edge three.Convex edge in a ring
Three can further increase the contact area of housing and inner sleeve, so as to increase the sealing connected therebetween and firmness.
In a kind of above-mentioned lobe pump, the cooling water channel is opened on the inwall of housing, the bottom of the cooling water channel
Wall is curved, and the both ends of cooling water channel are extended respectively on corresponding convex edge three.The bottom wall of water channel is curved, and water channel is from housing
Top extend to the bottom of housing, the cooling water channel volume of the structure is bigger, can make water in cooling water channel and inner sleeve
Lateral surface more fully contacts, and improves radiating effect.
Alternatively, cooling water channel can also be opened up in the outer surface of inner sleeve.
In a kind of above-mentioned lobe pump, the edge of the upper shell has the upper convex edge to stretch out, the lower house
Edge there is the lower convex edge that stretches out, the upper convex edge is mutually reclined with lower convex edge and the two is bolted, it is described on
Housing and lower house and inner sleeve are tight fit.Upper shell and lower house composition split-type structural, in installation first by upper shell and
Lower house is put in being enclosed on, and is affixed rearward, is fixed upper shell and lower house by bolt, the structure in upper convex edge and lower convex edge
(dismounting is also convenient for) easy for installation, is connected firmly.After upper shell and lower house are fixed together, internally set is pressed from both sides for the two
Tightly, good fixation is played, the structure can further improve the sealing connected between upper shell and lower house and inner sleeve
Property and firmness.
Compared with prior art, it is as follows the advantages of the utility model：
1st, cooling water channel is offered on the inwall of the housing of this lobe pump, is connected admittedly by articulamentum between housing and inner sleeve
It is fixed, can internally cover acted on good heat radiating while, additionally it is possible to ensure sealing good between housing and inner sleeve.
2nd, in the housing of this lobe pump, in a ring, the articulamentum being fixed in corresponding breach is (i.e. solidifying for the breach on housing
Sealant after Gu) also in a ring, mutually fixed by articulamentum in a ring between housing and inner sleeve, can further increase housing
The sealing and firmness being connected between inner sleeve.
Brief description of the drawings
Fig. 1 is the structural representation of lobe pump.
Fig. 2 is the sectional view of lobe pump.
Fig. 3 is the structural representation of breach.
Fig. 4 is the structural representation of annular groove.
Fig. 5 is the structural representation of body.
In figure, 1 housing；1a convex edges one；1b convex edges three；1c upper shells；The upper convex edges of 1c1；1d lower houses；Convex edge under 1d1；2
Inner sleeve；2a convex edges two；2b bodies；2b1 grooves；3 cooling water channels；4 water inlets；5 delivery ports；6 articulamentums；6a protuberances；7 air inlets
Mouthful；8 gas outlets；9 breach；10 bolts；11 annular grooves.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1-2, this lobe pump includes housing 1, has inner sleeve 2, housing made of anticorrosion material in housing 1
Cooling water channel 3 is provided between 1 inwall and the outer surface of inner sleeve 2, is further opened with what is be connected with cooling water channel 3 on housing 1
The junction of water inlet 4 and delivery port 5, housing 1 and inner sleeve 2, which is fixed with articulamentum 6, makes inner sleeve 2 be fixed on the inwall of housing 1.
As shown in fig. 2 or 5, in the present embodiment, inner sleeve 2 includes tubular body 2b, and inner sleeve 2 is integral type structure, shell
Body 1 includes upper shell 1c and lower house 1d, and upper shell 1c is detachably fixed with lower house 1d, upper shell 1c and lower house 1d difference
Mutually reclined with the body 2b first half and lower half, housing 1 is respectively and fixedly provided with body 2b leading section and the junction of rearward end
Articulamentum 6.Inner sleeve 2 can be more conveniently installed in housing 1 by the housing 1 of split-type structural, the inner sleeve 2 of integral structure
Better sealing can be formed between housing 1, and the water in cooling water channel 3 is not flowed into the inside of inner sleeve 2, articulamentum
6 are each attached to body 2b leading section and rearward end on housing 1, and make body 2b leading section and rearward end and the shape of housing 1
Into sealing, further increase the sealing between housing 1 and inner sleeve 2 and the firmness of connection.Certainly, housing 1 can also be left
The structure that housing 1 and right shell body 1 are combined, this is the conventional technical means of those skilled in the art.
As shown in Fig. 2 or 4, the leading section of housing 1 and rearward end offer annular groove 11, and body 2b leading section is with after
End passes from the both ends of housing 1 respectively, and each annular groove 11 is respectively around body 2b leading section and rearward end, each annular groove 11
Inside it is respectively and fixedly provided with articulamentum 6.Annular groove 11 can accommodate more sealants, after sealant solidifies, articulamentum 6 both with housing
1 madial wall is in contact and mutually fixed, and is in contact with body 2b lateral surface and mutually fixes, and the structure can further increase
The sealing and firmness connected between housing 1 and inner sleeve 2.
As shown in fig. 4 or 5, body 2b left side and right side are partial circle and the junction of the two has inwardly
Recessed groove 2b1, the shape of annular groove 11 is consistent with body 2b shape, articulamentum 6 and corresponding ring in each annular groove 11
The shape of shape groove 11 is consistent and each articulamentum 6 on be respectively provided with the protuberance 6a put in groove 2b1.Sealant is filled in annular groove
In 11, articulamentum 6 is formed after solidification, the protuberance 6a of articulamentum 6 is put in groove 2b1, and each articulamentum 6 is with corresponding body 2b's
End forms snap-in structure, can further increase the sealing connected between housing 1 and inner sleeve 2 and firmness.
As shown in Fig. 2 the bottom and top of housing 1 have air inlet 7 and gas outlet 8, air inlet 7 and air inlet 7 respectively
The week 1a of convex edge one that stretches out along being above respectively provided with, the upper and lower part of inner sleeve 2 is respectively provided with the 2a of convex edge two to stretch out, convex
Along a 1a and the 2a of convex edge two in a ring, each 2a of convex edge two lateral surface mutually reclines with a 1a of convex edge one inwall and mutually consolidated
Fixed, each 2a of convex edge two is respectively and fixedly provided with articulamentum 6 with the junction of the corresponding 1a of convex edge one end.The 1a of convex edge one in a ring
And the structure that reclines of the 2a phases of convex edge two can increase the contact area between housing 1 and inner sleeve 2, articulamentum 6 to the 2a of convex edge two and
The 1a of convex edge one end is fixed and sealed, and further increases the firm of sealing between housing 1 and inner sleeve 2 and connection
Degree.
As shown in figure 3 or 4, in the present embodiment, jagged 9 are opened up on the 1a of convex edge one outer face, each breach 9 passes through respectively
The corresponding 1a of convex edge one inwall is passed to, articulamentum 6 is fixed in corresponding breach 9 and mutually fixed with the 2a of convex edge two outer wall.It is convex
Can accommodate more sealants along the breach 9 on the outer face of a 1a, after sealant solidifies, articulamentum 6 both with convex edge one
The side wall of the upper breach 9 of 1a is in contact and mutually fixed, and is in contact with the 2a of convex edge two lateral surface and mutually fixes, and the structure can be entered
One step increases the sealing connected between housing 1 and inner sleeve 2 and firmness.
As shown in Figure 4, it is preferred that breach 9 in a ring, is fixed on articulamentum 6 in corresponding breach 9 also in a ring.It is in
Contact area between the articulamentum 6 and the 1a of convex edge one and the 2a of convex edge two of annular is bigger, and the structure can further increase housing 1
The sealing and firmness being connected between liner.
As shown in Fig. 2 the 1b of convex edge three to be extended internally along being above respectively provided with the week of air inlet 7 and gas outlet 8, the 1b of convex edge three are equal
In a ring, the 1b of convex edge three mutually reclines with the lateral surface of inner sleeve 2 and mutually fixed.The 1b of convex edge three in a ring can further increase
The contact area of shell adding body 1 and liner, so as to increase the sealing connected therebetween and firmness.
As shown in Fig. 2 cooling water channel 3 is opened on the inwall of housing 1, the bottom wall of cooling water channel 3 is curved, cooling water channel
3 both ends are extended respectively on the corresponding 1b of convex edge three.The bottom wall of water channel is curved, and water channel extends to from the top of housing 1
The bottom of housing 1, the volume of cooling water channel 3 of the structure is bigger, can make the lateral surface of water in cooling water channel 3 and inner sleeve 2 more
Add sufficient contact, improve radiating effect.
Alternatively, cooling water channel 3 can also be opened up in the outer surface of inner sleeve 2.
As shown in Fig. 2 in the present embodiment, upper shell 1c edge has the upper convex edge 1c1 to stretch out, lower house 1d's
Edge has the lower convex edge 1d1 to stretch out, and upper convex edge 1c1 is reclined with lower convex edge 1d1 phases and the two is fixed by bolt 10, on
Housing 1c and lower house 1d and inner sleeve 2 are tight fit.Upper shell 1c and lower house 1d composition split-type structurals, first will in installation
Upper shell 1c and lower house 1d are enclosed in inner sleeve 2, are affixed rearward in upper convex edge 1c1 and lower convex edge 1d1, by bolt 10 by upper casing
Body 1c and lower house 1d are fixed, and the structure is (dismounting is also convenient for) easy for installation, is connected firmly.Consolidate in upper shell 1c and lower house 1d
After being scheduled on together, the two is clamped to inner sleeve 2, plays good fixation, and the structure can further improve upper casing
The sealing and firmness connected between body 1c and lower house 1d and inner sleeve 2.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (10)
1. a kind of lobe pump, including housing (1), housing (1) is interior, and there is inner sleeve (2), its feature made of anticorrosion material to exist
In being provided with cooling water channel (3) between the inwall of the housing (1) and the outer surface of inner sleeve (2), also opened up on the housing (1)
There is the equal water inlet (4) and delivery port (5) being connected with the cooling water channel (3), housing (1) and the junction of inner sleeve (2) are consolidated
Surely articulamentum (6) inner sleeve (2) is fixed on the inwall of housing (1).
2. a kind of lobe pump according to claim 1, it is characterised in that the inner sleeve (2) includes tubular body
(2b), the inner sleeve (2) are integral type structure, and the housing (1) includes upper shell (1c) and lower house (1d), the upper shell
(1c) is detachably fixed with lower house (1d), upper shell (1c) and lower house (1d) first half and lower half with body (2b) respectively
Portion mutually reclines, and the housing (1) is respectively and fixedly provided with the articulamentum (6) with the leading section of body (2b) and the junction of rearward end.
3. a kind of lobe pump according to claim 2, it is characterised in that the leading section of the housing (1) and rearward end are equal
Annular groove (11) is offered, the leading section of the body (2b) and rearward end pass from the both ends of housing (1) respectively, each annular groove
(11) it is respectively and fixedly provided with the articulamentum (6) in the leading section of body (2b) and rearward end, each annular groove (11) respectively.
4. a kind of lobe pump according to claim 3, it is characterised in that the left side of the body (2b) and right side are equal
There is the groove (2b1) being inwardly recessed, the shape and body of the annular groove (11) for partial circle and the junction of the two
The shape of (2b) is consistent, and the articulamentum (6) in each annular groove (11) is consistent with the shape of corresponding annular groove (11) and each articulamentum
(6) protuberance (6a) put in groove (2b1) is respectively provided with.
5. according to a kind of lobe pump described in claim 1 or 2 or 3 or 4, it is characterised in that the bottom of the housing (1) and upper
Portion has air inlet (7) and gas outlet (8) respectively, and week of the air inlet (7) and air inlet (7) stretches out along being above respectively provided with
Convex edge one (1a), the bottom and top of the inner sleeve (2) are respectively provided with the convex edge two (2a) to stretch out, the convex edge one (1a)
With convex edge two (2a) in a ring, the lateral surface of each convex edge two (2a) mutually reclines with the inwall of a convex edge one (1a) and mutually consolidated
Fixed, each convex edge two (2a) is respectively and fixedly provided with articulamentum (6) with the junction of the end of corresponding convex edge one (1a).
6. a kind of lobe pump according to claim 5, it is characterised in that opened up on the outer face of the convex edge one (1a)
Jagged (9), each breach (9) penetrate to the inwall of corresponding convex edge one (1a) respectively, and the articulamentum (6) is fixed on corresponding lack
Mutually fixed in mouth (9) and with the outer wall of convex edge two (2a).
7. a kind of lobe pump according to claim 6, it is characterised in that the breach (9) is in a ring, described to be fixed on
Articulamentum (6) in corresponding breach (9) is also in a ring.
A kind of 8. lobe pump according to claim 5, it is characterised in that all edges of the air inlet (7) and gas outlet (8)
On be respectively provided with the convex edge three (1b) to extend internally, the convex edge three (1b) in a ring, the convex edge three (1b) with inner sleeve (2)
Lateral surface mutually recline and mutually fix.
9. a kind of lobe pump according to claim 8, it is characterised in that the cooling water channel (3) is opened in housing (1)
On inwall, the bottom wall of the cooling water channel (3) is curved, and the both ends of cooling water channel (3) extend respectively to corresponding convex edge three
On (1b).
10. a kind of lobe pump according to claim 2, it is characterised in that the edge of the upper shell (1c) has outside
The upper convex edge (1c1) of extension, the edge of the lower house (1d) have the lower convex edge (1d1) to stretch out, the upper convex edge
(1c1) is mutually reclined with lower convex edge (1d1) and the two is fixed by bolt (10), the upper shell (1c) and lower house (1d) with it is interior
It is tight fit to cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720573699.XU CN206988106U (en) | 2017-05-22 | 2017-05-22 | A kind of lobe pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720573699.XU CN206988106U (en) | 2017-05-22 | 2017-05-22 | A kind of lobe pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206988106U true CN206988106U (en) | 2018-02-09 |
Family
ID=61390207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720573699.XU Active CN206988106U (en) | 2017-05-22 | 2017-05-22 | A kind of lobe pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206988106U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949050A (en) * | 2017-05-22 | 2017-07-14 | 马德宝真空设备集团有限公司 | A kind of lobe pump |
| CN110594155A (en) * | 2019-09-23 | 2019-12-20 | 兑通真空技术(上海)有限公司 | Pump body structure of high-efficient lobe pump of constant temperature |
-
2017
- 2017-05-22 CN CN201720573699.XU patent/CN206988106U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949050A (en) * | 2017-05-22 | 2017-07-14 | 马德宝真空设备集团有限公司 | A kind of lobe pump |
| CN106949050B (en) * | 2017-05-22 | 2020-04-21 | 马德宝真空设备集团有限公司 | Roots pump |
| CN110594155A (en) * | 2019-09-23 | 2019-12-20 | 兑通真空技术(上海)有限公司 | Pump body structure of high-efficient lobe pump of constant temperature |
| CN110594155B (en) * | 2019-09-23 | 2021-05-25 | 兑通真空技术(上海)有限公司 | Pump body structure of constant-temperature roots pump |
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Assignee: Zhejiang Madebou Compressor Co.,Ltd. Assignor: MADEBAO VACUUM EQUIPMENT GROUP Co.,Ltd. Contract record no.: X2023330000783 Denomination of utility model: A Roots pump Granted publication date: 20180209 License type: Common License Record date: 20231012 Assignee: ZHEJIANG MOTEC SCREW VACUUM PUMP Co.,Ltd. Assignor: MADEBAO VACUUM EQUIPMENT GROUP Co.,Ltd. Contract record no.: X2023330000782 Denomination of utility model: A Roots pump Granted publication date: 20180209 License type: Common License Record date: 20231012 Assignee: Zhejiang Madebou Energy Conservation and Environmental Protection Co.,Ltd. Assignor: MADEBAO VACUUM EQUIPMENT GROUP Co.,Ltd. Contract record no.: X2023330000781 Denomination of utility model: A Roots pump Granted publication date: 20180209 License type: Common License Record date: 20231012 Assignee: Taizhou Xinghua Vacuum Equipment Manufacturing Co.,Ltd. Assignor: MADEBAO VACUUM EQUIPMENT GROUP Co.,Ltd. Contract record no.: X2023330000780 Denomination of utility model: A Roots pump Granted publication date: 20180209 License type: Common License Record date: 20231012 |