CN208935059U - A kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus - Google Patents
A kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus Download PDFInfo
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- CN208935059U CN208935059U CN201821754839.4U CN201821754839U CN208935059U CN 208935059 U CN208935059 U CN 208935059U CN 201821754839 U CN201821754839 U CN 201821754839U CN 208935059 U CN208935059 U CN 208935059U
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- constant pressure
- spool
- constant
- pressure
- remote control
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Abstract
The utility model belongs to plunger pump technique field, more particularly to a kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus, the lower part of specifically constant pressure valve body is respectively arranged with oil inlet, oil outlet and oil return opening, the middle part is provided with constant pressure spool chambers, oil inlet, oil outlet and oil return opening are connected with constant pressure spool chamber, constant pressure spool is provided in constant pressure spool chamber, the axial centre of constant pressure spool is provided with damping hole, the right end of constant pressure spool is connected with spring, constant pressure spool left end is spool left chamber, constant pressure spool right end is spool right end spring cavity, constant pressure valve body top is provided with remote control orifice, remote control orifice is connected with spool right end spring cavity, remote control orifice is connected to remote pressure regulating valve oil inlet.The utility model has the advantages that after making an axial damping hole on constant pressure spool, regardless of remote pressure regulating valve be placed on where, user can be transferred through the pressure rating of adjustment remote pressure regulating valve, is remotely controlled to oil pump, it is made to make stepless variable output.
Description
Technical field
The utility model belongs to plunger pump technique field, and in particular to a kind of PCY constant-pressure variable plunger-type fuel pump remotely controls
Device.
Background technique
PCY constant-pressure variable plunger-type fuel pump is a kind of product for being widely used in Hydraulic Power Transmission System fuel feeding, and its feature is to lead to
Different grades of pressure can be set by crossing adjustment constant pressure valve upper spring pressure.It is permanent when fuel pump output pressure is less than setting pressure
Pressure valve core right end moves to left spool by spring thrust, and constant pressure valve is opened, oil pump delivery oil extraction.It is set when fuel pump output pressure is greater than
When constant-pressure, spool left end oil pressure counter right end spring thrust moves to right spool, and constant pressure valve oil inlet is closed, and oil pump capacity subtracts
It is few, until maintaining a certain setting.In this way, oil pump can be made to carry out stepless variable in the case where guaranteeing that setting pressure strengthens state.But by
Limit (in such as fuel tank or eminence) in installation site of the oil pump in equipment so that adjustment pressure is with regard to very inconvenient, even more without
Method realizes long-range control, so that the scope of application of PCY constant-pressure variable plunger-type fuel pump is restricted.
Utility model content
The purpose of this utility model is to provide a kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatuses, solve existing
The problem of PCY constant-pressure variable plunger-type fuel pump can not be controlled remotely in technology.
The realization process of the utility model is as follows:
A kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus, including constant pressure valve body and remote pressure regulating valve, the constant pressure
The lower part of valve body is respectively arranged with constant pressure valve oil inlet, constant pressure valve oil outlet and constant pressure valve oil return opening, in the constant pressure valve body
Portion is provided with constant pressure spool chamber, the constant pressure valve oil inlet, constant pressure valve oil outlet and constant pressure valve oil return opening respectively with constant pressure spool
Chamber is connected, and the constant pressure spool chamber is internally provided with constant pressure spool, and the axial centre of constant pressure spool is provided with damping hole, institute
The right end for stating constant pressure spool is connected with spring, and the left end of the constant pressure spool is spool left chamber, and the right end of constant pressure spool is spool
Right end spring cavity, the top of the constant pressure valve body are provided with remote control orifice, be provided on the remote pressure regulating valve pressure regulator valve into
Hydraulic fluid port, the remote control orifice are connected with pressure regulator valve oil inlet.
Further, spool left chamber is connected to by the damping hole with spool right end spring cavity.
Further, the constant pressure valve oil inlet is connected with spool left chamber.
Further, the aperture of the spool damping hole is 0.3mm.
Further, the remote control orifice is connected to spool right end spring cavity.
Further, the remote control orifice is connected to pressure regulator valve oil inlet by hydraulic oil pipe.
Further, the middle section of the constant pressure spool is provided with annular groove.
Further, the constant pressure spool can move left and right in constant pressure spool chamber, and after constant pressure spool moves to right, constant pressure valve goes out
Hydraulic fluid port, constant pressure valve oil return opening are connected to annular groove simultaneously.
Further, the constant pressure valve oil inlet is connect with the left chamber of variable piston and oil pump respectively, the oil pump it is fuel-displaced
Mouth is connected to variable piston left chamber and constant pressure valve oil inlet, and the constant pressure valve oil outlet is connected to the right chamber of variable piston, described
Constant pressure valve oil return opening is connected to fuel tank, and the oil pump oil inlet is connected to fuel tank.
Further, user can be remotely controlled oil pump by adjusting the pressure rating of remote pressure regulating valve, it is made to make stepless change
Amount output.
The good effect of the utility model: the key technology of the utility model is to make an axial damping on constant pressure spool
It is then used so that spool left chamber is connected to spool right end spring cavity, then makees a remote control orifice on spool right end spring cavity in hole
Remote control orifice is connected by hydraulic oil pipe with pressure regulator valve oil inlet, and the pressure oil of oil pump output will be passed through resistance by spool left chamber
Buddhist nun hole enters spool right end spring cavity, then enters the oil inlet of remote pressure regulating valve by remote control orifice and hydraulic oil pipe.By changing
Into rear, regardless of remote pressure regulating valve be placed on where, user can be transferred through the pressure rating of adjustment remote pressure regulating valve, to oil pump into
Row remote control, makes it make stepless variable output.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of PCY constant-pressure variable plunger-type fuel pump remote control apparatus described in the utility model；
In figure, 1 constant pressure valve body, 2 remote pressure regulating valves, 3 constant pressure valve oil inlets, 4 constant pressure valve oil outlets, 5 constant pressure valve oil return openings,
6 constant pressure spool chambers, 7 constant pressure spools, 71 damping holes, 72 springs, 73 annular grooves, 61 spool left chambers, 62 spool right end spring cavitys,
8 remote control orifices, 9 oil pumps, 10 variable pistons, 11 fuel tanks, 12 pressure regulator valve oil inlets, 13 hydraulic oil pipes.
Specific embodiment
The utility model is described further below with reference to embodiment.
In order to solve the problems, such as that PCY constant-pressure variable plunger-type fuel pump can not be controlled remotely in the prior art, the utility model is mentioned
For a kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus.
Embodiment 1
PCY constant-pressure variable plunger-type fuel pump remote control apparatus described in the present embodiment, is shown in Fig. 1, including constant pressure valve body 1 and long-range
Pressure regulator valve 2, the lower part of the constant pressure valve body 1 are respectively arranged with constant pressure valve oil inlet 3, constant pressure valve oil outlet 4 and constant pressure valve oil return
Mouth 5, the middle part of the constant pressure valve body 1 is provided with constant pressure spool chamber 6, the constant pressure valve oil inlet 3, constant pressure valve oil outlet 4 and perseverance
Pressure valve oil return opening 5 is connected with constant pressure spool chamber 6 respectively, and the constant pressure spool chamber 6 is internally provided with constant pressure spool 7, constant pressure
The axial centre of spool 7 is provided with damping hole 71, and the aperture of the spool damping hole 71 is 0.3mm, and the damping hole 71 is by valve
Core left chamber 61 is connected to spool right end spring cavity 62, and the right end of the constant pressure spool 7 is connected with spring 72, the constant pressure spool 7
Left end be spool left chamber 61, the middle section of the constant pressure spool 7 is provided with annular groove 73, and the constant pressure spool 7 can be in constant pressure
It is moved left and right in spool chamber 6, after constant pressure spool 7 moves to right, constant pressure valve oil outlet 4, constant pressure valve oil return opening 5 while and annular groove
73 connections, the constant pressure valve oil inlet 3 are connected with spool left chamber 61, and the right end of constant pressure spool 7 is spool right end spring cavity 62,
The top of the constant pressure valve body 1 is provided with remote control orifice 8, and the remote control orifice 8 is connected with spool right end spring cavity 62,
Pressure regulator valve oil inlet 12 is provided on the remote pressure regulating valve 2, the remote control orifice 8 passes through hydraulic with pressure regulator valve oil inlet 12
Oil pipe 13 is connected.The constant pressure valve oil inlet 3 is connect with the left chamber of variable piston 10 and oil pump 9 respectively, and the oil pump 9 goes out
Hydraulic fluid port is connected to 10 left chamber of variable piston and constant pressure valve oil inlet 3, and the right chamber of the constant pressure valve oil outlet 4 and variable piston 10 connects
Logical, the constant pressure valve oil return opening 5 is connected to fuel tank 11, and 9 oil inlet of oil pump is connected to fuel tank 11.User can be by adjusting remote
The pressure rating of journey pressure regulator valve 2 is remotely controlled oil pump 9, it is made to make stepless variable output.
The utility model makees an axial damping hole 71 on constant pressure spool 7 makes spool left chamber 61 and spool right end spring cavity 62
Then spool right end spring cavity 62 is connected to by remote control orifice 8 again with 2 oil inlet of remote pressure regulating valve, thus may be used by connection
To be remotely controlled by pressure of the remote pressure regulating valve 2 to oil pump 9.
Working principle of the utility model is: 9 pressure oil output of oil pump by the constant pressure valve oil inlet 3 on constant pressure valve body 1 into
Enter spool left chamber 61, spool right end spring cavity 62 is then entered by damping hole 71, then liquid is passed through by spool right end spring cavity 62
Pressuring oil pipe 13 enters the pressure regulator valve oil inlet 12 of remote pressure regulating valve 2, and at this moment, user can according to demand carry out remote pressure regulating valve 2
Pressure setting.When 9 output pressure of oil pump, which is less than remote pressure regulating valve 2, sets pressure, remote pressure regulating valve 2 is closed.At this moment, spool is left
The oil pressure of chamber 61 and spool right end spring cavity 62 is in equilibrium state, but due to the thrust of 7 right end spring 72 of constant pressure spool, constant pressure
Spool 7 is moved to left into open state, and pressure oil is pushed away from the right chamber of the 4 entering variable piston 10 of constant pressure valve oil outlet of constant pressure valve body 1
Dynamic variable piston 10 moves to left, 9 delivery oil extraction of oil pump.When 9 output pressure of oil pump is greater than setting pressure, remote pressure regulating valve 2 is opened
It opens, spool right end spring cavity 62 is by 2 release of remote pressure regulating valve, due to the damping action of damping hole 71, the pressure of spool left chamber 61
Power is greater than the pressure of spool right end spring cavity 62, and the thrust of spring 72 is overcome to move to right constant pressure spool 7, allows constant pressure valve body 1
Constant pressure valve oil outlet 4 is connected to constant pressure valve oil return opening 5, this 10 right chamber of variations per hour piston passes through 1 release of constant pressure valve body, variable piston
10 move to right, and 9 output quantity of oil pump becomes smaller.In this way, pressure rating can be arranged in user by remote pressure regulating valve 2, control oil pump 9 carries out nothing
Grade variable.
The producer of remote pressure regulating valve 2 described in the utility model is German Rexroth, model DBW/S.R12 type.
The above content is specific preferred embodiment further description to made by the utility model is combined, no
It can assert that the specific implementation of the utility model is only limitted to these explanations.For the utility model those of ordinary skill in the art
For, without departing from the concept of the premise utility, several simple deduction or replace can also be made, all should be considered as category
In the protection scope of the utility model.
Claims (10)
1. a kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus, it is characterised in that: including constant pressure valve body (1) and long-range tune
Pressure valve (2), the lower part of the constant pressure valve body (1) are respectively arranged with constant pressure valve oil inlet (3), constant pressure valve oil outlet (4) and constant pressure
Valve oil return opening (5) is provided with constant pressure spool chamber (6) in the middle part of the constant pressure valve body (1), the constant pressure valve oil inlet (3), constant pressure
Valve oil outlet (4) and constant pressure valve oil return opening (5) are connected with constant pressure spool chamber (6) respectively, the inside of the constant pressure spool chamber (6)
It is provided with constant pressure spool (7), the axial centre of constant pressure spool (7) is provided with damping hole (71), the right end of the constant pressure spool (7)
It is connected with spring (72), the left end of the constant pressure spool (7) is spool left chamber (61), and the right end of constant pressure spool (7) is that spool is right
It holds spring cavity (62), the top of the constant pressure valve body (1) is provided with remote control orifice (8), is arranged on the remote pressure regulating valve (2)
Have pressure regulator valve oil inlet (12), the remote control orifice (8) is connected with pressure regulator valve oil inlet (12).
2. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 1, it is characterised in that: the damping hole
(71) spool left chamber (61) is connected to spool right end spring cavity (62).
3. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 1, it is characterised in that: the constant pressure valve
Oil inlet (3) is connected with spool left chamber (61).
4. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 1, it is characterised in that: the damping hole
(71) aperture is 0.3mm.
5. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 1, it is characterised in that: the long-range control
Donsole (8) is connected to spool right end spring cavity (62).
6. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 1, it is characterised in that: the long-range control
Donsole (8) is connected to pressure regulator valve oil inlet (12) by hydraulic oil pipe (13).
7. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 1, it is characterised in that: the constant pressure valve
The middle section of core (7) is provided with annular groove (73).
8. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 7, it is characterised in that: the constant pressure valve
Core (7) can move left and right in constant pressure spool chamber (6), and after constant pressure spool (7) moves to right, constant pressure valve oil outlet (4), constant pressure valve are returned
Hydraulic fluid port (5) is connected to annular groove (73) simultaneously.
9. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 1, it is characterised in that: the constant pressure valve
Oil inlet (3) is connect with the left chamber of variable piston (10) and oil pump (9) respectively, the oil outlet and variable piston of the oil pump (9)
(10) left chamber is connected to, and the constant pressure valve oil outlet (4) is connected to the right chamber of variable piston (10), the constant pressure valve oil return opening (5)
It is connected to fuel tank (11), the oil pump (9) is connected to fuel tank (11) oil inlet.
10. PCY constant-pressure variable plunger-type fuel pump remote control apparatus according to claim 9, it is characterised in that: user can pass through
The pressure rating for adjusting remote pressure regulating valve (2), is remotely controlled oil pump (9), it is made to make stepless variable output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821754839.4U CN208935059U (en) | 2018-10-29 | 2018-10-29 | A kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821754839.4U CN208935059U (en) | 2018-10-29 | 2018-10-29 | A kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208935059U true CN208935059U (en) | 2019-06-04 |
Family
ID=66726252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821754839.4U Active CN208935059U (en) | 2018-10-29 | 2018-10-29 | A kind of PCY constant-pressure variable plunger-type fuel pump remote control apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208935059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628101A (en) * | 2020-12-07 | 2021-04-09 | 宁波恒力液压股份有限公司 | Flow control valve for plunger pump |
-
2018
- 2018-10-29 CN CN201821754839.4U patent/CN208935059U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112628101A (en) * | 2020-12-07 | 2021-04-09 | 宁波恒力液压股份有限公司 | Flow control valve for plunger pump |
| CN112628101B (en) * | 2020-12-07 | 2022-09-16 | 宁波恒力液压股份有限公司 | Flow control valve for plunger pump |
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