CN211901146U - FLR type power control valve with load sensing function - Google Patents
FLR type power control valve with load sensing function Download PDFInfo
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- CN211901146U CN211901146U CN202020481311.5U CN202020481311U CN211901146U CN 211901146 U CN211901146 U CN 211901146U CN 202020481311 U CN202020481311 U CN 202020481311U CN 211901146 U CN211901146 U CN 211901146U
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Abstract
The utility model discloses a take FLR type power control valve of sensitive function of load, the one end internal connection of constant power case has a plug, the valve body is kept away from on the one end of No. two plugs and the position of upper and lower both sides lateral wall and is connected with an adjusting lever cover and No. two adjusting lever covers respectively, an adjusting lever cover and No. two inside regulation poles that all are connected with of adjusting lever cover, the one end that the valve body was kept away from to an adjusting lever cover and No. two adjusting lever covers all is connected with the nut, set up K mouth and L mouth on the valve body bottom just is close to No. two plug positions, load sensitive control case one end in-connection has No. three plugs, the utility model discloses the beneficial effect who reaches is: the utility model provides a take FLR type constant power control valve of sensitive control of load, direct mount is on A10V plunger pump, and need with install another LR control valve supporting use on the plunger pump to be connected LR control valve's external hydraulic fluid port and the LR hydraulic fluid port on the valve body, simultaneously, still must be with the pipeline connection behind the X hydraulic fluid port on this product and the throttle valve in the hydraulic system.
Description
Technical Field
The utility model relates to a control valve, in particular to FLR type constant power control valve of load sensitive control function belongs to the hydraulic control valve field.
Background
The plunger pump of the Lishile series A10V is a plunger pump of a medium pressure type, has been made in China for a long time, and is widely applied to the industrial field in a low-price and control mode.
In the available model of the pump, a constant power control mode integrating load sensitive control is not provided, so that when a user needs the plunger pump with the control mode, only expensive high-pressure plunger pumps of different series can be used, and the use cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a take FLR type constant power control valve of load sensitive control function, through parts such as constant power case can be effectual in the current optional model of this pump of solution, the constant power control mode of the sensitive control of load has not integrateed, so when the user needs the plunger pump of this kind of control mode, can only change into the high-pressure plunger pump of expensive and different series, increase use cost's technical problem.
In order to solve the technical problem, the utility model provides a following technical scheme: the FLR type power control valve with the load sensitive function comprises a valve body, wherein a constant-power valve core and a load sensitive control valve core are connected inside the valve body, two screw plugs are connected to the upper side wall and the lower side wall of one end of the valve body respectively, one screw plug is connected to one end of the constant-power valve core, one end of the valve body, far away from the two screw plugs, of the valve body and the positions of the upper side wall and the lower side wall of the valve body are respectively connected with a first adjusting rod sleeve and a second adjusting rod sleeve, adjusting rods are connected inside the first adjusting rod sleeve and the second adjusting rod sleeve respectively, nuts are connected to one ends of the first adjusting rod sleeve and the second adjusting rod sleeve, far away from the valve body, the nuts are in threaded connection, a K port and an L port are arranged at the bottom of the valve body and close to the two screw plugs, a third screw plug is connected to one end of the load sensitive control valve core, and one end, which is the same with the, The pressure-sensitive control valve comprises a first spring, a second spring and a second spring seat, wherein a mounting screw is connected to the side wall of the bottom of the valve body in a threaded manner, and a third spring seat is connected between the load-sensitive control valve core and the adjusting rod.
As a preferred technical scheme of the utility model, establish load sensitive control valve part and constant power control valve part in the valve body, No. two plug, the sensitive control case of load, a spring holder and No. two spring holders, a spring and No. two springs, No. two regulating stem cover, regulation pole and nut constitute the sensitive control valve part of load, No. two plug, constant power case, a spring holder and No. two spring holders, a spring and No. two springs, a regulating stem cover, regulation pole and nut constitute constant power control valve part.
As an optimized technical scheme of the utility model, set up on the valve body and found four screw holes, three oil through hole and a plug screw hole, the valve body can only use rather than supporting AV plunger pump that matches.
As an optimal technical scheme of the utility model, processing has the sensitive valve opening of load and power control valve opening on the valve body, still process X hydraulic fluid port and LR hydraulic fluid port on the valve body, wherein the spring chamber UNICOM of X hydraulic fluid port and the sensitive valve of load, the spring chamber UNICOM of LR hydraulic fluid port and power control valve, and the LR hydraulic fluid port is located X hydraulic fluid port top, keeps away from on the installation bottom surface of control valve promptly.
As an optimal technical scheme of the utility model, a straight hole of constant power case center processing, this hole length is greater than the% of constant power case length to it is the same with one or two damping holes on the excircle of constant power case right-hand member.
The utility model discloses the beneficial effect who reaches is: the utility model provides a take FLR type constant power control valve of sensitive control of load, direct mount is on A10V plunger pump, and need with install another LR control valve supporting use on the plunger pump, and with LR control valve's external hydraulic fluid port with the LR hydraulic fluid port on the valve body be connected, simultaneously, still must be with the pipeline connection behind the throttle valve in the X hydraulic fluid port on this product and the hydraulic system, when using this kind of control mode, through the opening of throttle valve in the governing system, can realize the direct control to plunger pump sloping cam plate pivot angle, thereby the output flow of control plunger pump, integrate constant power control and the sensitive control of load on a valve, and finally install on the plunger pump, remedy the functional shortcoming of this hydraulic pump, the control principle among the hydraulic system has been simplified, the installation pipeline has been simplified, low cost.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic plan sectional structure of the present invention.
In the figure: 1. a valve body; 2. a constant power valve core; 3. a load-sensitive control valve cartridge; 4. a first plug; 5. A first spring seat; 6. a first spring; 7. a second spring; 8. a second spring seat; 9. a first adjusting rod sleeve; 10. a second plug; 11. mounting screws; 12. a port K; 13. an L port; 14. a third plug; 15. A third spring seat; 16. a second adjusting rod sleeve; 17. adjusting a rod; 18. and a nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b): as shown in figure 1, an FLR type power control valve with a load sensing function comprises a valve body 1, a constant power valve core 2 and a load sensing control valve core 3 are connected inside the valve body 1, two screw plugs 10 are connected on the upper side wall and the lower side wall of one end of the valve body 1, a first screw plug 4 is connected inside one end of the constant power valve core 2, a first adjusting rod sleeve 9 and a second adjusting rod sleeve 16 are respectively connected at the position of one end of the valve body 1 far away from the second screw plug 10 and the positions of the upper side wall and the lower side wall, adjusting rods 17 are connected inside the first adjusting rod sleeve 9 and the second adjusting rod sleeve 16, a nut 18 is connected at one end of the first adjusting rod sleeve 9 and the second adjusting rod sleeve 16 far away from the valve body 1, a nut 18 is connected with a nut in a threaded manner, a K port 12 and an L port 13 are arranged at the bottom of the valve body 1 and near the second screw plug 10, a third screw plug 14 is connected, a first spring seat 5, a first spring 6, a second spring 7 and a second spring seat 8 are connected to the inner portion of the same end of the constant-power valve core 2 and the load-sensitive control valve core 3, a mounting screw 11 is connected to the side wall of the bottom of the valve body 1 in a threaded mode, and a third spring seat 15 is connected between the load-sensitive control valve core 3 and an adjusting rod 17.
The center of the constant-power valve core 2 is provided with a straight hole, the length of the straight hole is greater than 80% of the length of the constant-power valve core 2, the straight hole is the same as one or two damping holes on the excircle of the right end of the constant-power valve core 2, the valve body 1 is provided with four screw holes, three oil through holes and a plug screw hole, the valve body 1 can only be matched with an A10V plunger pump matched with the valve body 1 for use, the valve body 1 is provided with a load sensitive valve hole and a power control valve hole, the valve body 1 is also provided with an X oil port and an LR oil port, the X oil port is communicated with a spring cavity of the load sensitive valve, the LR oil port is communicated with the spring cavity of the power control valve, the LR oil port is positioned above the X oil port, namely is far away from the mounting bottom surface of the control valve, a load sensitive control valve part and a constant-power control valve part are arranged in the, The first spring 6, the second spring 7, the second adjusting rod sleeve 16, the adjusting rod 17 and the nut 18 form a load sensitive control valve part, and the second plug 10, the constant power valve core 2, the first spring seat 5, the second spring seat 8, the first spring 6, the second spring 7, the first adjusting rod sleeve 9, the adjusting rod 17 and the nut 18 form a constant power control valve part.
Specifically, the load sensitive control valve part comprises a valve body 1, a second plug 10, a load sensitive control valve core 3, a first spring seat 5, a second spring seat 8, a first spring 6, a second spring 7, a second adjusting rod sleeve 16, an adjusting rod 17 and a nut 18, the constant power control valve part comprises the valve body 1, the second plug 10, a constant power valve core 2, a first spring seat 5, a second spring seat 8, a first spring 6, a second spring 7, a first adjusting rod sleeve 9, an adjusting rod 17 and a nut 18, the valve core is pushed to the left end by rotating the adjusting rod 17 to compress the spring in the initial state, when the left end hydraulic pressure of the valve core is greater than the resultant force of the hydraulic pressure and the spring, the valve core can move rightwards, at the moment, the left end hydraulic pressure of the valve core depends on the right end hydraulic pressure and the spring force, the load sensitive control valve, high-pressure oil of a plunger enters the valve body 1 through a port B of a pump outlet of the, then enters the left end face of the load sensitive control valve core 3 through the center hole of the load sensitive control valve core 3, the spring cavity at the right end of the load sensitive control valve core 3 is directly communicated with the X port of the valve and is finally connected with a load oil path, namely, the hydraulic pressure at the right end of the load sensitive control valve core 3 is load pressure, when the hydraulic pressure at the left end of the load sensitive control valve core 3 is greater than the resultant force of the load pressure at the right end and the spring force, the load sensitive control valve core 3 starts to move rightwards until the oil passage at the port B is communicated with the oil passage at the port K12 of the valve body 1, so that the high-pressure oil at the port B enters the variable cylinder through the port K12, thereby controlling the angle change of the swash plate until the output flow of the pump outlet is stable, the constant power control is carried out, the high-pressure oil at the outlet of, meanwhile, the pressure oil enters a right-end spring cavity through a central hole and a damping hole of the constant-power valve core 2, the right-end spring cavity is communicated with an LR oil port of the valve body 1, the LR oil port of the valve body 1 is connected with an LR control valve arranged at other positions of a plunger pump, the pressure oil overflows through the LR control valve when the pressure of the LR oil port continuously rises and reaches a certain set value, the pressure oil overflows through the LR control valve, the left end surface of the constant-power valve core 2 is pushed to the right along with the continuous increase of the pressure of the B oil port on the power control valve, after the hydraulic oil of the LR oil port overflows through the LR control valve, the continuously raised pressure of the left end of the constant-power valve core 2 is greater than the resultant force of the pressure of the LR oil port at the right end and the spring force, so that the constant-power valve core 2 moves to enable, so as to control the angle change of the swash plate until the output flow of the pump outlet is stable.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The FLR type power control valve with the load sensing function is characterized by comprising a valve body (1), wherein a constant-power valve core (2) and a load-sensing control valve core (3) are connected inside the valve body (1), two threaded plugs (10) are connected on the upper side wall and the lower side wall of one end of the valve body (1), one threaded plug (4) is connected inside one end of the constant-power valve core (2), one end of the valve body (1), far away from the two threaded plugs (10), of the valve body and the positions of the upper side wall and the lower side wall are respectively connected with a first adjusting rod sleeve (9) and a second adjusting rod sleeve (16), adjusting rods (17) are connected inside the first adjusting rod sleeve (9) and the second adjusting rod sleeve (16), one ends, far away from the valve body (1), of the first adjusting rod sleeve (9) and the second adjusting rod sleeve (16) are both connected with nuts (18), and nuts (18) are connected with nuts in an internal thread manner, the improved structure of the high-power constant-power valve is characterized in that a K port (12) and an L port (13) are arranged at the bottom of the valve body (1) and close to a second plug (10), a third plug (14) is connected in one end of the load sensitive control valve core (3), a first spring seat (5), a first spring (6), a second spring (7) and a second spring seat (8) are connected in the same end of the constant-power valve core (2) and the load sensitive control valve core (3), a mounting screw (11) is connected to the side wall of the bottom of the valve body (1) in a threaded manner, and a third spring seat (15) is connected between the load sensitive control valve core (3) and the adjusting rod (17).
2. The FLR type power control valve with the load sensing function according to claim 1, wherein a load sensing control valve part and a constant power control valve part are arranged in the valve body (1), the second plug (10), the load sensing control valve core (3), the first spring seat (5) and the second spring seat (8), the first spring (6) and the second spring (7), the second adjusting rod sleeve (16), the adjusting rod (17) and the nut (18) form the load sensing control valve part, and the second plug (10), the constant power valve core (2), the first spring seat (5) and the second spring seat (8), the first spring (6) and the second spring (7), the first adjusting rod sleeve (9), the adjusting rod (17) and the nut (18) form the constant power control valve part.
3. The FLR type power control valve with the load sensing function according to claim 1, wherein four screw holes, three oil through holes and a screw plug hole are formed on the valve body (1), and the valve body (1) can only be used with a A10V plunger pump matched with the valve body.
4. The FLR type power control valve with the load sensing function according to claim 2, wherein a load sensing valve hole and a power control valve hole are formed in the valve body (1), an X oil port and an LR oil port are further formed in the valve body (1), the X oil port is communicated with the spring cavity of the load sensing valve, the LR oil port is communicated with the spring cavity of the power control valve, and the LR oil port is located above the X oil port, namely located on the installation bottom surface far away from the control valve.
5. The FLR type power control valve with the load sensing function according to claim 1, wherein a straight hole is processed in the center of the constant power valve core (2), the length of the straight hole is more than 80% of the length of the constant power valve core (2), and the straight hole is the same as one or two damping holes on the excircle of the right end of the constant power valve core (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020481311.5U CN211901146U (en) | 2020-04-05 | 2020-04-05 | FLR type power control valve with load sensing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020481311.5U CN211901146U (en) | 2020-04-05 | 2020-04-05 | FLR type power control valve with load sensing function |
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| Publication Number | Publication Date |
|---|---|
| CN211901146U true CN211901146U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020481311.5U Active CN211901146U (en) | 2020-04-05 | 2020-04-05 | FLR type power control valve with load sensing function |
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| Country | Link |
|---|---|
| CN (1) | CN211901146U (en) |
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2020
- 2020-04-05 CN CN202020481311.5U patent/CN211901146U/en active Active
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