CN207406443U - A kind of new twin fuel pump - Google Patents
A kind of new twin fuel pump Download PDFInfo
- Publication number
- CN207406443U CN207406443U CN201721397809.8U CN201721397809U CN207406443U CN 207406443 U CN207406443 U CN 207406443U CN 201721397809 U CN201721397809 U CN 201721397809U CN 207406443 U CN207406443 U CN 207406443U
- Authority
- CN
- China
- Prior art keywords
- guide rail
- shaft coupling
- piston
- cylinder body
- bulge loop
- 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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Abstract
The utility model is related to fuel pumps, a kind of new twin fuel pump is disclosed, including the pump housing, first cylinder body and the second cylinder body are installed in the pump housing, first piston is installed in first cylinder body, second piston is installed in second cylinder body, first guide rail and the second guide rail are installed between the first cylinder body and the second cylinder body, first guide rail is equipped with first passage, first guide rail is equipped with the first threaded hole, first passage is connected with the first threaded hole bottom, the pump housing is threaded with the first check valve, the connector of first check valve extend into the first threaded hole and is fixedly connected with the first guide rail.The present apparatus offers first passage and second channel on the first guide rail and the second guide rail, when first piston moves right, the volume of first cavity is extruded, and pass through first passage and the first check valve is flow back into fuel tank again, so as to ensure that the first cavity and the in vivo fluid of the second chamber can be back flowed back into fuel tank, the utilization rate of fluid is improved.
Description
Technical field
The utility model is related to fuel pump more particularly to a kind of new twin fuel pumps.
Background technology
As groundwork component, structure is in symmetry shape for double crosslinking piston Piston for pump and cylinder body and intermediate connector.
When piston is reciprocating in cylinder body, volume variation occurs for the closed swept volume chamber being made of piston and cylinder body, completes
It inhales, oil extraction process.According to different spread patterns of the piston in cylinder body, piston pump is divided into two major class of radial and axial type.Footpath
To piston pump due to it is complicated, volume is larger, substituted in many occasions by axial poiston pump.The piston of axial poiston pump
Centerline parallel (or substantially parallel) is in the axis of cylinder body.The good airproof performance of such pump has operating pressure height, under high pressure
Remain to keep quite high volumetric efficiency and gross efficiency, variable easy to implement and unit power it is light-weight the advantages that.Extensively
Apply to pressure processing machinery, handling equipment, engineering machinery, ship deck machinery, metallurgical machinery, cannon and space technology
In field, and can be by as high pressure and high pressure fuel source.
Extra fluid is easily infiltrated into cavity between pervious twin fuel pump inner body, so that fuel tank
Interior fluid is reduced, and the in vivo fluid of chamber cannot be discharged by oil pump and utilized again.
The content of the invention
The shortcomings that the utility model in the cavity between oil pump inner components in the prior art for fluid is easily infiltrated into,
A kind of new twin fuel pump is provided.
In order to solve the above-mentioned technical problem, the utility model is addressed by following technical proposals：
A kind of new twin fuel pump including the pump housing, is equipped with the first cylinder body and the second cylinder body, the first cylinder body in the pump housing
First piston is inside installed, second piston is installed in the second cylinder body, first is equipped between the first cylinder body and the second cylinder body and is led
Rail and the second guide rail are equipped with two-dimentional shaft coupling, two-dimentional shaft coupling one end and first piston between the first guide rail and the second guide rail
Connection, the two-dimentional shaft coupling other end are connected with second piston, and the idler wheel of quantity at least four, idler wheel are evenly equipped on two-dimentional shaft coupling
It is rolled between the first guide rail and the second guide rail, two-dimentional shaft coupling includes the first shaft coupling and the second shaft coupling, the first shaft coupling
And second be fixedly connected by axis pin between shaft coupling, the first shaft coupling is fixedly connected with first piston, the second shaft coupling and
Two pistons are fixedly connected, and first annular cavity is surrounded between first piston, the first shaft coupling and the first guide rail, is set on the first guide rail
There is the first passage connected with first annular cavity, the first guide rail is equipped with the first threaded hole, the first passage other end and first
Threaded hole bottom connects, and the pump housing is threaded with the first check valve, and the connector of the first check valve is extend into the first threaded hole
It is fixedly connected with the first guide rail.
Preferably, the first shaft coupling be integral type shaft coupling, the first shaft coupling include the first connecting shaft, the first bulge loop and
Connecting rod, the first bulge loop are located at the left end of the first connecting shaft, and idler wheel is mounted on connecting rod, and the first bulge loop is equipped with first annular slot, the
First sealing ring in one annular groove is installed, is tightly connected between the first bulge loop and the first guide rail by the first sealing ring.
Preferably, the second annular housing is surrounded between second piston, the second shaft coupling and the second guide rail, on the second guide rail
Equipped with the second channel connected with the second annular housing, the second guide rail is equipped with the second threaded hole, the second channel other end and the
Two threaded hole bottoms connect, and the pump housing is threaded with the second check valve, and the connector of the second check valve is extend into two threaded holes
It is fixedly connected with the second guide rail
Preferably, the second shaft coupling is integral type shaft coupling, the second shaft coupling includes the second connecting shaft, the second bulge loop,
Second bulge loop is located at the right end of the second connecting shaft, and the second bulge loop is equipped with the second annular groove, and it is close to be equipped with second in the second annular groove
Seal is tightly connected between the second bulge loop and the second guide rail by the second sealing ring.
Preferably, the first guide rail and the second guide rail are all waveform guide rail, the guide surface of the first guide rail and the second guide rail is
Inclined surface, the cross section of idler wheel is isosceles trapezoid.
The utility model has significant technique effect as a result of above technical scheme：
The first cavity of the utility model and the second cavity are that had better not penetrate into fluid in the ideal situation, but when entire oil
Pump is put into fluid, and does not have sealing element to be sealed between component, and fluid is certain to ooze full first cavity and the second cavity, this
Device offers first passage and second channel on the first guide rail and the second guide rail, when first piston moves right, first
The volume of cavity is extruded, and passes through first passage and the first check valve is flow back into fuel tank again, and the first check valve causes oil
Fluid in case will not adverse current in the first cavity, principle and first piston move right phase when second piston is moved to the left
Together, so as to ensure that the first cavity and the in vivo fluid of the second chamber can be back flowed back into fuel tank, the utilization rate of fluid is improved.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of the first shaft coupling in Fig. 1.
Fig. 3 is the structure diagram of the second shaft coupling in Fig. 1.
The toponym that each number designation is referred in the figures above is as follows：Wherein, 10-pump housing, the 11-the first cylinder body,
12-the second cylinder body, 13-first piston, 14-second piston, the 15-the first guide rail, the 16-the second guide rail, 17-two dimension shaft coupling
Section, 18-idler wheel, 19-first annular cavity, the 20-the first check valve, the 21-the first sealing ring, the 22-the second annular housing,
23-the second check valve, the 24-the second sealing ring, 151-first passage, the 152-the first threaded hole, 161-second channel,
It is 162-the second threaded hole, the 171-the first shaft coupling, the 172-the second shaft coupling, the 1711-the first connecting shaft, 1712-the first convex
Ring, 1713-connecting rod, 1714-first annular slot, the 1721-the second connecting shaft, the 1722-the second bulge loop, the 1723-the second annular
Slot.
Specific embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of new twin fuel pump as shown in Figs. 1-3, including the pump housing 10, is equipped with the first cylinder body 11 in the pump housing 10
With the second cylinder body 12, first piston 13 is installed in the first cylinder body 11, second piston 14, the first cylinder are installed in the second cylinder body 12
First guide rail 15 and the second guide rail 16 between 11 and second cylinder body 12 of body are installed, pacified between the first guide rail 15 and the second guide rail 16
Equipped with two-dimentional shaft coupling 17, two-dimentional 17 one end of shaft coupling is connected with first piston 13, and two-dimentional 17 other end of shaft coupling and second is lived
Plug 14 connects, and the idler wheel 18 of quantity at least four, 17 upper roller of the present embodiment two dimension shaft coupling are evenly equipped on two-dimentional shaft coupling 17
18 quantity is four, and idler wheel 18 rolls between the first guide rail 15 and the second guide rail 16, so as to fulfill first piston 13 and the
Two pistons 14 move left and right, and two-dimentional shaft coupling 17 includes the first shaft coupling 171 and the second shaft coupling 172,171 He of the first shaft coupling
It is fixedly connected between second shaft coupling 172 by axis pin, the first shaft coupling 171 is fixedly connected with first piston 13, the second shaft coupling
Section 172 is fixedly connected with second piston 14, and the first ring is surrounded between first piston 13, the first shaft coupling 171 and the first guide rail 15
Shape cavity 19, the first guide rail 15 are equipped with the first passage 151 that connect with first annular cavity 19, and the first guide rail 15 is equipped with the
One threaded hole 152,151 other end of first passage are connected with 152 bottom of the first threaded hole, and it is unidirectional that the pump housing 10 is threaded with first
Valve 20, is equipped with 0 type sealing ring between the first check valve 20 and the first guide rail 15, the connector of the first check valve 20 extend into first
It is fixedly connected in threaded hole 152 with the first guide rail 15.
First shaft coupling 171 is integral type shaft coupling, and the first shaft coupling 171 includes the first connecting shaft 1711, the first bulge loop
1712 and connecting rod 1713, the first bulge loop 1712 is located at the left end of the first connecting shaft 1711, and idler wheel 18 is mounted on connecting rod 1713, the
One bulge loop 1712 is equipped with first annular slot 1714, and the first sealing ring 21, the first bulge loop 1712 are equipped in first annular slot 1714
It is tightly connected between the first guide rail 15 by the first sealing ring 21.
The second annular housing 22, the second guide rail 16 are surrounded between second piston 14, the second shaft coupling 172 and the second guide rail 16
The second channel 161 connected with the second annular housing 22 is equipped with, the second guide rail 16 is equipped with the second threaded hole 162, and second is logical
161 other end of road is connected with 162 bottom of the second threaded hole, and the pump housing 10 is threaded with the second check valve 23, the second check valve 23
Connector extend into two threaded holes and be fixedly connected with the second guide rail 16.
Second shaft coupling 172 is integral type shaft coupling, and the second shaft coupling 172 includes the second connecting shaft 1721, the second bulge loop
1722, the second bulge loop 1722 is located at the right end of the second connecting shaft 1721, and the second bulge loop 1722 is equipped with the second annular groove 1723, and second
Second sealing ring 24 is installed in annular groove 1723, the second sealing ring of the present embodiment 24 is sealing ring made of nitrile rubber, the
It is tightly connected between two bulge loops 1722 and the second guide rail 16 by the second sealing ring 24.
First guide rail 15 and the second guide rail 16 are all waveform guide rail, and idler wheel 18 in the rolling, live by first piston 13 and second
Plug 14 can control reciprocatings movement, and the guide surface of the first guide rail 15 and the second guide rail 16 is inclined surface, and the cross section of idler wheel 18 is
Isosceles trapezoid, the cross section of idler wheel 18 causes idler wheel 18, and when being rolled on the first guide rail 15 and the second guide rail 16, stability is more
It is high.
In short, the above is only the preferred embodiment of the present invention, it is all according to present utility model application the scope of the claims institute
The equivalent changes and modifications of work should all belong to the covering scope of the utility model patent.
Claims (5)
1. including the pump housing (10), the first cylinder body (11) and the second cylinder are equipped in the pump housing (10) for a kind of new twin fuel pump
Body (12) is equipped with first piston (13) in the first cylinder body (11), is equipped with second piston (14) in the second cylinder body (12), and first
First guide rail (15) and the second guide rail (16), the first guide rail (15) and second are installed between cylinder body (11) and the second cylinder body (12)
Two-dimentional shaft coupling (17) is installed, two-dimentional shaft coupling (17) one end is connected with first piston (13), two dimension connection between guide rail (16)
Joint (17) other end is connected with second piston (14), and the idler wheel of quantity at least four is evenly equipped on two-dimentional shaft coupling (17)
(18), idler wheel (18) rolls between the first guide rail (15) and the second guide rail (16), it is characterised in that：Two-dimentional shaft coupling (17) bag
The first shaft coupling (171) and the second shaft coupling (172) are included, passes through pin between the first shaft coupling (171) and the second shaft coupling (172)
Axis is fixedly connected, and the first shaft coupling (171) is fixedly connected with first piston (13), the second shaft coupling (172) and second piston
(14) it is fixedly connected, first annular cavity is surrounded between first piston (13), the first shaft coupling (171) and the first guide rail (15)
(19), the first guide rail (15) is equipped with the first passage (151) connected with first annular cavity (19), and the first guide rail is set on (15)
There is the first threaded hole (152), first passage (151) other end is connected with the first threaded hole (152) bottom, and the pump housing (10) screw thread connects
The first check valve (20) is connected to, the connector of the first check valve (20) is extend into the first threaded hole (152) and the first guide rail
(15) it is fixedly connected.
2. a kind of new twin fuel pump according to claim 1, it is characterised in that：First shaft coupling (171) is one
Body formula shaft coupling, the first shaft coupling (171) include the first connecting shaft (1711), the first bulge loop (1712) and connecting rod (1713), the
One bulge loop (1712) is located at the left end of the first connecting shaft (1711), and idler wheel (18) is mounted on connecting rod (1713), the first bulge loop
(1712) first annular slot (1714) is equipped with, the first sealing ring (21), the first bulge loop are installed in first annular slot (1714)
(1712) it is tightly connected between the first guide rail (15) by the first sealing ring (21).
3. a kind of new twin fuel pump according to claim 1, it is characterised in that：Second piston (14), second
The second annular housing (22) is surrounded between joint (172) and the second guide rail (16), the second guide rail (16) is equipped with and the second annular
The second channel (161) of cavity (22) connection, the second guide rail (16) are equipped with the second threaded hole (162), and second channel (161) is another
One end is connected with the second threaded hole (162) bottom, and the pump housing (10) is threaded with the second check valve (23), the second check valve (23)
Connector extend into two threaded holes () and be fixedly connected with the second guide rail (16).
4. a kind of new twin fuel pump according to claim 3, it is characterised in that：Second shaft coupling (172) is one
Body formula shaft coupling, the second shaft coupling (172) include the second connecting shaft (1721), the second bulge loop (1722), the second bulge loop (1722)
The right end of the second connecting shaft (1721) is located at, the second bulge loop (1722) is equipped with the second annular groove (1723), the second annular groove
(1723) the second sealing ring (24) is installed in, passes through the second sealing ring between the second bulge loop (1722) and the second guide rail (16)
(24) it is tightly connected.
5. a kind of new twin fuel pump according to claim 1, it is characterised in that：First guide rail (15) and second is led
For rail (16) all for waveform guide rail, the guide surface of the first guide rail (15) and the second guide rail (16) is inclined surface, idler wheel (18) it is transversal
Face is isosceles trapezoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721397809.8U CN207406443U (en) | 2017-10-25 | 2017-10-25 | A kind of new twin fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721397809.8U CN207406443U (en) | 2017-10-25 | 2017-10-25 | A kind of new twin fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207406443U true CN207406443U (en) | 2018-05-25 |
Family
ID=62407966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721397809.8U Expired - Fee Related CN207406443U (en) | 2017-10-25 | 2017-10-25 | A kind of new twin fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207406443U (en) |
-
2017
- 2017-10-25 CN CN201721397809.8U patent/CN207406443U/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: 20180525 Termination date: 20181025 |