CN214742430U - Unloading valve motor starting device - Google Patents
Unloading valve motor starting device Download PDFInfo
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- CN214742430U CN214742430U CN202121040348.5U CN202121040348U CN214742430U CN 214742430 U CN214742430 U CN 214742430U CN 202121040348 U CN202121040348 U CN 202121040348U CN 214742430 U CN214742430 U CN 214742430U
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Abstract
The utility model provides an unloading valve motor starting device, which comprises a pilot operated overflow valve, wherein the pilot operated overflow valve is respectively connected with a solenoid valve and a first manual ball valve by pipelines, the first manual ball valve is respectively connected with a first check valve and a pressure difference transmitter by pipelines, the first check valve is connected with a second manual ball valve by pipelines, the second manual ball valve is connected with an accumulator group by pipelines, the pressure difference transmitter is connected with a third manual ball valve by pipelines, the third manual ball valve is connected with a second check valve by pipelines, the second check valve is connected with a variable plunger pump by pipelines, the variable plunger pump is connected with a fourth manual ball valve by pipelines, the fourth manual ball valve is connected with an oil tank by pipelines, the oil tank is respectively connected with the pilot operated overflow valve and the solenoid valve by pipelines, when the unloading valve breaks down suddenly, the hydraulic oil works after the rotating speed is stable, the continuous work can be kept, secondary damage can not be caused, the work progress is not delayed, and the operation is simple.
Description
Technical Field
The utility model relates to a technical field that the off-load valve motor started specifically is an off-load valve motor starting drive.
Background
The unloading valve is a valve which can unload the hydraulic pump under a certain condition, is usually an overflow valve with a two-position two-way valve (usually an electromagnetic valve), and has the function of setting the main pressure of a system (an oil pump) when the unloading valve is not unloaded, when the unloading valve is in an unloading state (the pressure oil is converted by the action of the two-position two-way valve), the pressure oil directly returns to an oil tank, the pressure of the oil pump is reduced to be approximately zero, so that the control of some loops is realized, the service life of the oil pump is prolonged, the power consumption is reduced, and the unloading valve belongs to a loop combined in the loops.
In the existing unloading valve motor starting device, the motor starting current is large, the starting time is long, the impact on a hydraulic pump is large, and when the unloading valve fails, pressure cannot be provided for a hydraulic system when a manual ball valve is not arranged.
Based on the above, a new unloading valve motor starting device needs to be developed, so that when the motor is started normally in an idle state, after the rotating speed is stable, the hydraulic oil works on the system, when the unloading valve breaks down suddenly, the manual ball valve is closed in time, the work can be kept continuously, secondary damage cannot be caused, the work progress is not delayed, and the unloading valve motor starting device is simple to operate and very convenient.
SUMMERY OF THE UTILITY MODEL
The utility model mainly provides an unloading valve motor starting drive for solve the technical problem who proposes among the above-mentioned background art.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
the unloading valve motor starting device comprises a pilot operated overflow valve, wherein the pilot operated overflow valve is respectively connected with an electromagnetic valve and a first manual ball valve through pipelines, the first manual ball valve is respectively connected with a first one-way valve and a differential pressure transmitter through pipelines, the first one-way valve is connected with a second manual ball valve through a pipeline, the second manual ball valve is connected with an energy accumulator set through a pipeline, the differential pressure transmitter is connected with a third manual ball valve through a pipeline, the third manual ball valve is connected with a second one-way valve through a pipeline, the second one-way valve is connected with a variable plunger pump through a pipeline, the variable plunger pump is connected with a fourth manual ball valve through a pipeline, the fourth manual ball valve is connected with an oil tank through a pipeline, and the oil tank is respectively connected with the pilot operated overflow valve and the electromagnetic valve through pipelines.
Furthermore, a liquid level oil temperature meter, a liquid level transmitter, an oil temperature transmitter and an air filter are respectively arranged on the oil tank.
Furthermore, the differential pressure transmitter is respectively connected with a high-pressure filter and a filter bypass valve through pipelines.
Furthermore, the third manual ball valve is connected with a safety valve through a pipeline, and the safety valve is connected with the oil tank through a pipeline.
Furthermore, a pressure gauge and a pressure transmitter are connected between the third manual ball valve and the second one-way valve through pipelines.
Furthermore, the variable plunger pump is connected with a motor through a pipeline, and the motor and the variable plunger pump are connected with an oil tank through a pipeline.
Furthermore, the fourth manual ball valve is electrically connected with a travel switch.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an unloading valve starting drive has realized when the motor is unloaded normally to start, and the back is stabilized to the rotational speed, and the work of hydraulic oil upper system when unloading valve proruption trouble, in time closes manual ball valve, can keep continuing work, can not cause the secondary to damage, does not hinder the progress of work to easy operation, convenience very.
The present invention will be explained in detail with reference to the drawings and specific embodiments.
Drawings
FIG. 1 is a schematic view of the overall plane connection structure of the present invention;
FIG. 2 is a flow chart of the manual ball valve pipeline connection of the present invention;
fig. 3 is a schematic view of the plane structure of the oil tank of the present invention.
In the figure: 1. a pilot operated relief valve; 2. an electromagnetic valve; 3. a first manual ball valve; 4. an oil tank; 5. a liquid level oil temperature meter; 6. a liquid level transmitter; 7. an oil temperature transmitter; 8. an air filter; 9. a travel switch; 10. a fourth manual ball valve; 11. a variable displacement plunger pump; 12. a motor; 13. a second one-way valve; 14. a pressure gauge; 15. a pressure transmitter; 16. a safety valve; 17. a third manual ball valve; 18. a high pressure filter; 19. a differential pressure transmitter; 20. a filter bypass valve; 21. a second manual ball valve; 22. a first check valve; 23. an accumulator bank.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, but rather, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the term knowledge in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, the unloading valve motor starting device includes a pilot overflow valve 1, the pilot operated overflow valve 1 is respectively connected with an electromagnetic valve 2 and a first manual ball valve 3 through pipelines, the first manual ball valve 3 is respectively connected with a first one-way valve 22 and a differential pressure transmitter 19 through pipelines, the first one-way valve 22 is connected with a second manual ball valve 21 through a pipeline, the second manual ball valve 21 is connected with an accumulator group 23 through a pipeline, the differential pressure transmitter 19 is connected with a third manual ball valve 17 through a pipeline, the third manual ball valve 17 is connected with a second one-way valve 13 through a pipeline, the second one-way valve 13 is connected with a variable plunger pump 11 through a pipeline, the variable plunger pump 11 is connected with a fourth manual ball valve 10 through a pipeline, the fourth manual ball valve 10 is connected with an oil tank 4 through a pipeline, and the oil tank 4 is respectively connected with the pilot-operated overflow valve 1 and the electromagnetic valve 2 through pipelines.
Referring again to fig. 1 and 2, the differential pressure transmitter 19 is piped with a high pressure filter 18 and a filter bypass valve 20, by the cooperation between the high pressure filter and the 18 filter bypass valve 20, a filtering function is achieved, the third manual ball valve 17 is connected with a safety valve 16 through a pipeline, the safety valve 16 is connected with the oil tank 4 through a pipeline, the safety valve 16 is used for improving the safety of workers, a pressure gauge 14 and a pressure transmitter 15 are connected between the third manual ball valve 17 and the second one-way valve 13 through pipelines, the variable plunger pump 11 is connected with a motor 12 through a pipeline, the motor 12 and the variable plunger pump 11 are connected with the oil tank 4 through a pipeline, through motor 12, realized converting the electric energy into kinetic energy, for the whole drive power that provides of device, fourth manual ball valve 10 electric connection has travel switch 9.
Please refer to fig. 1 and fig. 3, the oil tank 4 is respectively provided with a liquid level oil temperature meter 5, a liquid level transmitter 6, an oil temperature transmitter 7 and an air filter 8, and the control and detection of the oil in the oil tank 4 are realized through the liquid level oil temperature meter 5, the liquid level transmitter 6, the oil temperature transmitter 7 and the air filter 8.
The utility model discloses a concrete operation as follows:
whether potential safety hazards exist in all links in the whole device is checked firstly, a power supply is switched on after no potential safety hazards exist, the electromagnetic valve 2 serves as a pilot valve of the pilot-operated overflow valve 1, the electromagnetic valve 2 is powered on, the pilot-operated overflow valve 1 serves as a main valve to be opened, hydraulic oil is discharged to the oil tank 4, when the motor 12 is started, the electromagnetic valve 2 is powered on, after the motor 12 is normally started (generally 2-5 seconds), the electromagnetic valve 2 is powered off, the pilot-operated overflow valve 1 is closed, the hydraulic oil feeding system is normally opened, the first manual ball valve 3, the second manual ball valve 21, the third manual ball valve 17 and the fourth manual ball valve 10 are manually closed, if the electromagnetic valve 2 and the pilot-operated overflow valve 1 are in fault, the first manual ball valve 3, the second manual ball valve 21, the third manual ball valve 17 and the fourth manual ball valve 10 are manually closed, normal operation of the hydraulic system is guaranteed, and meanwhile, online maintenance is achieved.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, if the method and the technical solution of the present invention are adopted, the present invention can be directly applied to other occasions without substantial improvement, and the present invention is within the protection scope of the present invention.
Claims (7)
1. An unloading valve motor starting device comprises a pilot operated overflow valve (1), and is characterized in that the pilot operated overflow valve (1) is respectively connected with an electromagnetic valve (2) and a first manual ball valve (3) through pipelines, the first manual ball valve (3) is respectively connected with a first check valve (22) and a pressure difference transmitter (19) through pipelines, the first check valve (22) is connected with a second manual ball valve (21) through a pipeline, the second manual ball valve (21) is connected with an energy accumulator group (23) through a pipeline, the pressure difference transmitter (19) is connected with a third manual ball valve (17) through a pipeline, the third manual ball valve (17) is connected with a second check valve (13) through a pipeline, the second check valve (13) is connected with a variable plunger pump (11) through a pipeline, the variable plunger pump (11) is connected with a fourth manual ball valve (10), and the fourth manual ball valve (10) is connected with an oil tank (4) through a pipeline, the oil tank (4) is respectively connected with the pilot overflow valve (1) and the electromagnetic valve (2) through pipelines.
2. An unloading valve motor starting device according to claim 1, wherein a liquid level oil temperature gauge (5), a liquid level transmitter (6), an oil temperature transmitter (7) and an air filter (8) are respectively arranged on the oil tank (4).
3. An unloader valve motor actuator according to claim 1, wherein the differential pressure transducer (19) is piped with a high pressure filter (18) and a filter bypass valve (20), respectively.
4. An unloading valve motor actuating apparatus according to claim 1, wherein the third manual ball valve (17) is piped with a relief valve (16), and the relief valve (16) is piped with the tank (4).
5. An unloading valve motor actuating device according to claim 4, characterized in that a pressure gauge (14) and a pressure transmitter (15) are connected between the third manual ball valve (17) and the second one-way valve (13) through pipelines.
6. An unloading valve motor actuating device according to claim 1, characterized in that the variable displacement plunger pump (11) is connected with a motor (12) through a pipeline, and the motor (12) and the variable displacement plunger pump (11) are connected with the oil tank (4) through a pipeline.
7. An unloading valve motor actuating device according to claim 1, wherein the fourth manual ball valve (10) is electrically connected with a travel switch (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121040348.5U CN214742430U (en) | 2021-05-14 | 2021-05-14 | Unloading valve motor starting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121040348.5U CN214742430U (en) | 2021-05-14 | 2021-05-14 | Unloading valve motor starting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214742430U true CN214742430U (en) | 2021-11-16 |
Family
ID=78622698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121040348.5U Active CN214742430U (en) | 2021-05-14 | 2021-05-14 | Unloading valve motor starting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214742430U (en) |
-
2021
- 2021-05-14 CN CN202121040348.5U patent/CN214742430U/en active Active
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