CN203130492U - Double gear pump - Google Patents
Double gear pump Download PDFInfo
- Publication number
- CN203130492U CN203130492U CN 201320101951 CN201320101951U CN203130492U CN 203130492 U CN203130492 U CN 203130492U CN 201320101951 CN201320101951 CN 201320101951 CN 201320101951 U CN201320101951 U CN 201320101951U CN 203130492 U CN203130492 U CN 203130492U
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- China
- Prior art keywords
- gear shaft
- driving gear
- driven gear
- gear
- shaft
- 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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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a double gear pump which comprises a gear pump body (1), gear shafts and a gear set, wherein the gear shafts are arranged in an inner cavity of the gear pump body (1); the gear set is arranged on the gear shafts; a first drive gear shaft (2a) and a second drive gear shaft (2b) are connected and fixed through a spline; one ends of the first drive gear shaft (2a) and a first driven gear shaft (3a) are mounted in a front cover (11); the other ends of the first drive gear shaft (2a) and the first driven gear shaft (3a) are mounted in a connecting body (15); one ends of the second drive gear shaft (2b) and a second driven gear shaft (3b) are mounted in the connecting body (15); and the other ends of the second drive gear shaft (2b) and the second driven gear shaft (3b) are mounted in a rear cover (14). According to the double gear pump, a bearing seat is removed, so that the volume of the pump body (1) is reduced, the length of the first drive gear shaft (2a) is correspondingly shortened, the manufacturing material is reduced, and the production cost is lowered.
Description
Technical field:
The utility model relates to the gear pump technical field, more specifically to a kind of duplex gear pump.
Background technique:
Duplex gear pump is a kind of of gear pump, is to rely on formed swept volume between the pump housing and two groups of engaging gears to change and movement is carried liquid or made it the rotary pump of supercharging.Have two groups of gears in the pump housing of duplex gear pump, in the preceding pump housing of one group of gear in the pump housing, the sealed space of the pump housing is divided into suction chamber and discharge side before making, in the back pump housing of the one group of gear in back in the pump housing, make the sealed space of the back pump housing also be divided into suction chamber and discharge side, when gear rotates, the space of the side that is out of gear (being suction chamber) volume is big from little change, forming vacuum sucks liquid, liquid is gone forward side by side into discharge side with the gear rotation at two between cog of gear, the liquid of getting rid of the chamber is extruded, and finishes the working procedure of gear pump with this.
Existing duplex gear pump as shown in Figure 2, its front pump cover 1A, rear pump cover 2A are fixed together by bolt 3A and middle pump housing 4A, be provided with bearing support 5A in the inner chamber of middle pump housing 4A, gear shaft and gear train all are arranged among the bearing support 5A, and gear shaft comprises the first driving gear shaft 61A, the second driving gear shaft 62A, the first driven gear shaft 63A and the second driven gear shaft 64A; Gear train comprises the first driving gear 65A, the second driving gear 66A, the first driven gear 67A and the second driven gear 68A, it is because middle pump housing 4A is what to separate with bearing support 5A, the inner chamber of feasible middle pump housing 4A need have enough spaces and place bearing support 5A, the volume of pump housing 4A became big in the middle of it made, its waste material has improved cost of production.
The model utility content:
The purpose of this utility model is exactly the deficiency at prior art, and provide a kind of duplex gear pump, it removes bearing support, one end of win driving gear shaft and first driven gear shaft is installed in the protecgulum, the other end is installed in the connecting body, one end of second driving gear shaft and second driven gear shaft is installed in the connecting body, the other end is installed in the bonnet, and first driving gear, second driving gear, first driven gear and second driven gear all are set directly in the inner chamber of the preceding pump housing and the back pump housing, reduced the volume of the pump housing, reduced the length of first driving gear shaft accordingly, reduce manufactured materials, reduced cost of production.
Technology solution of the present utility model is as follows:
A kind of duplex gear pump, comprise gear pump body, gear shaft and gear train, gear shaft is arranged in the gear pump body inner chamber, gear train is arranged on the gear shaft, described gear pump body is made of protecgulum, the preceding pump housing, the back pump housing, bonnet and the connecting body between the preceding pump housing and the back pump housing, protecgulum, the preceding pump housing, connecting body, the back pump housing and bonnet set gradually and are bolted to connection in aggregates from left to right, and described gear shaft comprises first driving gear shaft, second driving gear shaft, first driven gear shaft and second driven gear shaft; Described gear train comprises first driving gear, second driving gear, first driven gear and second driven gear; First driving gear and first driven gear form first driving gear on first driving gear shaft in the front pump intracoelomic cavity, form first driven gear on first driven gear shaft, and first driving gear is meshed with first driven gear; Second driving gear and second driven gear form second driving gear on second driving gear shaft in the inner chamber of the back pump housing, form second driven gear on second driven gear shaft, and second driving gear and second driven gear are meshed;
First driving gear shaft and second driving gear shaft are connected and fixed by spline; One end of first driving gear shaft and first driven gear shaft is installed in the protecgulum, the other end is installed in the connecting body, and an end of second driving gear shaft and second driven gear shaft is installed in the connecting body, the other end is installed in the bonnet.
The left end sleeve of described first driving gear shaft also stretches out protecgulum, on the close left part of first driving gear shaft axle sleeve is arranged fixedly, the axle sleeve sleeve is in the axis hole that the top of protecgulum forms, the left end of first driven gear shaft is fixed in the axle sleeve that is inserted with in the axis hole that the bottom of protecgulum forms, and the right-hand member of first driving gear shaft and first driven gear shaft all is fixed in the axle sleeve that is inserted with in two axis holes up and down that form on connecting body one side;
The left end of second driving gear shaft and second driven gear shaft is fixed in the axle sleeve that is inserted with in two axis holes up and down that form on the connecting body opposite side, in the axle sleeve that the right-hand member sleeve of second driving gear shaft and second driven gear shaft is inserted with in two axis holes up and down that bonnet forms, first driven gear shaft does not link to each other with second driven gear shaft.
The beneficial effects of the utility model are:
It removes bearing support, make an end of win driving gear shaft and first driven gear shaft be installed in the protecgulum, the other end is installed in the connecting body, one end of second driving gear shaft and second driven gear shaft is installed in the connecting body, the other end is installed in the bonnet, and first driving gear, second driving gear, first driven gear and second driven gear all are set directly in the inner chamber of the preceding pump housing and the back pump housing, reduced the volume of the pump housing, reduced the length of first driving gear shaft accordingly, reduce manufactured materials, reduced cost of production.
Simultaneously, it has first driving gear with straight forming on first driving gear shaft, straight forming has first driven gear on first driven gear shaft, straight forming has second driving gear on second driving gear shaft, straight forming has second driven gear on second driven gear shaft, reduce the part number of gear pump like this, improved the speed of assembling, improved whole manufacturing efficiency.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of existing duplex gear pump.
Among the figure: 1, the pump housing; 11, protecgulum; 12, the preceding pump housing; 13, the back pump housing; 14, bonnet; 15, connecting body; 16, axle sleeve; 2a, first driving gear shaft; 2b, second driving gear shaft; 3a, first driven gear shaft; 3b, second driven gear shaft; 4a, first driving gear; 4b, second driving gear; 5a, first driven gear; 5b, second driven gear; 6, protective cover.
Embodiment:
The following stated only is preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
Embodiment: see shown in Figure 1, a kind of duplex gear pump, comprise gear pump body 1, gear shaft and gear train, gear shaft is arranged in gear pump body 1 inner chamber, gear train is arranged on the gear shaft, described gear pump body 1 is by protecgulum 11, the preceding pump housing 12, the back pump housing 13, bonnet 14 and the connecting body 15 between the preceding pump housing 12 and the back pump housing 13 constitute, protecgulum 11, the preceding pump housing 12, connecting body 15, the back pump housing 13 and bonnet 14 set gradually and are bolted to connection in aggregates from left to right, and described gear shaft comprises the first driving gear shaft 2a, the second driving gear shaft 2b, the first driven gear shaft 3a and the second driven gear shaft 3b; Described gear train comprises the first driving gear 4a, the second driving gear 4b, the first driven gear 5a and the second driven gear 5b; The first driving gear 4a and the first driven gear 5a are in the preceding pump housing 12 inner chambers, form the first driving gear 4a on the first driving gear shaft 2a, form the first driven gear 5a on the first driven gear shaft 3a, the first driving gear 4a is meshed with the first driven gear 5a; The second driving gear 4b and the second driven gear 5b are in the inner chamber of the back pump housing 13, form the second driving gear 4b on the second driving gear shaft 2b, form the second driven gear 5b on the second driven gear shaft 3b, the second driving gear 4b and the second driven gear 5b are meshed;
The first driving gear shaft 2a and the second driving gear shaft 2b are connected and fixed by spline; The end of the first driving gear shaft 2a and the first driven gear shaft 3a is installed in the protecgulum 11, the other end is installed in the connecting body 15, and the end of the second driving gear shaft 2b and the second driven gear shaft 3b is installed in the connecting body 15, the other end is installed in the bonnet 14.
The left end sleeve of the described first driving gear shaft 2a also stretches out protecgulum 11, on the close left part of the first driving gear shaft 2a axle sleeve 16 is arranged fixedly, axle sleeve 16 sleeves are in the axis hole that the top of protecgulum 11 forms, the left end of the first driven gear shaft 3a is fixed in the axle sleeve 16 that is inserted with in the axis hole that the bottom of protecgulum 11 forms, and the right-hand member of the first driving gear shaft 2a and the first driven gear shaft 3a all is fixed in the axle sleeve 16 that is inserted with in two axis holes up and down that form on connecting body 15 1 sides;
The left end of the second driving gear shaft 2b and the second driven gear shaft 3b is fixed in the axle sleeve 16 that is inserted with in two axis holes up and down that form on connecting body 15 opposite sides, in the axle sleeve 16 that the right-hand member sleeve of the second driving gear shaft 2b and the second driven gear shaft 3b is inserted with in two axis holes up and down that bonnet 14 forms, the first driven gear shaft 3a does not link to each other with the second driven gear shaft 3b.
The left end of the described first driving gear shaft 2a is bolted with protective cover 6.
Be the structural representation of existing duplex gear pump among Fig. 2, be provided with intermediate clapboard 7A among the bearing support 5A wherein.
Claims (2)
1. duplex gear pump, comprise gear pump body (1), gear shaft and gear train, gear shaft is arranged in gear pump body (1) inner chamber, gear train is arranged on the gear shaft, described gear pump body (1) is by protecgulum (11), the preceding pump housing (12), the back pump housing (13), bonnet (14) and be positioned at the preceding pump housing (12) and the back pump housing (13) between connecting body (15) constitute, protecgulum (11), the preceding pump housing (12), connecting body (15), the back pump housing (13) and bonnet (14) set gradually and be bolted to connection in aggregates from left to right, it is characterized in that: described gear shaft comprises first driving gear shaft (2a), second driving gear shaft (2b), first driven gear shaft (3a) and second driven gear shaft (3b); Described gear train comprises first driving gear (4a), second driving gear (4b), first driven gear (5a) and second driven gear (5b); First driving gear (4a) and first driven gear (5a) are in the preceding pump housing (12) inner chamber, form first driving gear (4a) on first driving gear shaft (2a), form first driven gear (5a) on first driven gear shaft (3a), first driving gear (4a) is meshed with first driven gear (5a); Second driving gear (4b) and second driven gear (5b) are in the inner chamber of the back pump housing (13), form second driving gear (4b) on second driving gear shaft (2b), form second driven gear (5b) on second driven gear shaft (3b), second driving gear (4b) and second driven gear (5b) are meshed;
First driving gear shaft (2a) and second driving gear shaft (2b) are connected and fixed by spline; One end of first driving gear shaft (2a) and first driven gear shaft (3a) is installed in the protecgulum (11), the other end is installed in the connecting body (15), and an end of second driving gear shaft (2b) and second driven gear shaft (3b) is installed in the connecting body (15), the other end is installed in the bonnet (14).
2. a kind of duplex gear pump according to claim 1, it is characterized in that: the left end sleeve of described first driving gear shaft (2a) also stretches out protecgulum (11), axle sleeve (16) is fixedly arranged on the close left part of first driving gear shaft (2a), axle sleeve (16) sleeve is in the axis hole that the top of protecgulum (11) forms, the left end of first driven gear shaft (3a) is fixed in the axle sleeve (16) that is inserted with in the axis hole that the bottom of protecgulum (11) forms, and the right-hand member of first driving gear shaft (2a) and first driven gear shaft (3a) all is fixed in the axle sleeve (16) that is inserted with in two axis holes up and down that form on connecting body (15) one sides;
The left end of second driving gear shaft (2b) and second driven gear shaft (3b) is fixed in the axle sleeve (16) that is inserted with in two axis holes up and down that form on connecting body (15) opposite side, in the axle sleeve (16) that the right-hand member sleeve of second driving gear shaft (2b) and second driven gear shaft (3b) is inserted with in two axis holes up and down that bonnet (14) forms, first driven gear shaft (3a) does not link to each other with second driven gear shaft (3b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101951 CN203130492U (en) | 2013-03-06 | 2013-03-06 | Double gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320101951 CN203130492U (en) | 2013-03-06 | 2013-03-06 | Double gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130492U true CN203130492U (en) | 2013-08-14 |
Family
ID=48938474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320101951 Expired - Fee Related CN203130492U (en) | 2013-03-06 | 2013-03-06 | Double gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130492U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179228A (en) * | 2015-06-15 | 2015-12-23 | 安徽优源液压科技有限公司 | Double-channel hydraulic pump |
| CN105971873A (en) * | 2015-03-12 | 2016-09-28 | 株式会社昭和 | Pump apparatus and marine vessel propelling machine |
| CN107939671A (en) * | 2017-10-19 | 2018-04-20 | 浙江大学 | A kind of tandem low pulse crescent gear pump with error angle |
| CN108361191A (en) * | 2018-02-02 | 2018-08-03 | 上海发那科机器人有限公司 | Duplex geared pump system |
-
2013
- 2013-03-06 CN CN 201320101951 patent/CN203130492U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971873A (en) * | 2015-03-12 | 2016-09-28 | 株式会社昭和 | Pump apparatus and marine vessel propelling machine |
| CN105179228A (en) * | 2015-06-15 | 2015-12-23 | 安徽优源液压科技有限公司 | Double-channel hydraulic pump |
| CN107939671A (en) * | 2017-10-19 | 2018-04-20 | 浙江大学 | A kind of tandem low pulse crescent gear pump with error angle |
| CN108361191A (en) * | 2018-02-02 | 2018-08-03 | 上海发那科机器人有限公司 | Duplex geared pump system |
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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: 20130814 Termination date: 20190306 |