Stepless pressure regulation output oil way of double-oil-pipe gear pump and control mode

Abstract

The invention discloses a stepless pressure regulation output oil way of a double-oil-pipe gear pump. The oil way comprises an oil tank, a filter and a gear pump which are connected in sequence, the gear pump is further connected with a motor through a coupler, and the rotating speed of the motor is 150-5300 r / min. An oil outlet of the oil tank is connected with an oil inlet of the filter, an oil outlet of the filter is connected with the gear pump, and an oil return pipeline is connected between the gear pump and the oil tank; an oil outlet of the gear pump is connected with a three-way pipe, the three-way pipe is respectively connected with a pressure transmitter and an oil injection electromagnetic valve, and an oil outlet of the oil injection electromagnetic valve is connected with an oil injection pipeline. Compared with the prior art, the oil way and the control mode for stepless pressure regulation output of the double-oil-pipe gear pump have the advantages that stepless regulation of pressure behind the pump is achieved by regulating the rotating speed of the motor, and therefore combustion of different gears is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of the fuel pipeline structure of diesel cooking stoves, and specifically refers to an oil pipeline and a control method with stepless pressure regulation output by a double - oil - pipe gear pump. Background Art

[0002] Liquid fuel stoves are mainly applied in places such as families and the catering industry. In the kitchen facilities of large hotels, the catering industry and other units, diesel stoves are mostly used.

[0003] In the prior art, the main factor affecting the use of diesel stoves is their fuel pipeline structure. Among them, for a traditional double - oil - pipe gear pump, when the fuel pipeline is fixed, the size of the fuel injector is fixed, and the built - in pressure regulating valve of the gear pump remains unchanged, when the motor speed changes, the gear pump will adjust the size of its own oil return flow to keep the outlet pressure constant, which is not conducive to stepless adjustment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above - mentioned technical defects and provide an oil pipeline and a control method with stepless pressure regulation output by a double - oil - pipe gear pump, which can realize stepless adjustment of the pressure after the pump by adjusting the motor speed, so as to achieve combustion at different gears.

[0005] To solve the above - mentioned technical problem, the technical solution provided by the present invention is: an oil pipeline with stepless pressure regulation output by a double - oil - pipe gear pump, including a fuel tank, a filter, and a gear pump connected in sequence;

[0006] The gear pump is also connected with a motor through a coupling, and the motor speed is 150 - 5300 r / min;

[0007] The oil outlet of the fuel tank is connected to the oil inlet of the filter, the oil outlet of the filter is connected to the gear pump, and an oil return pipeline is connected between the gear pump and the fuel tank;

[0008] The oil outlet of the gear pump is connected with a tee, the tee is respectively connected with a pressure transmitter and an injection solenoid valve, and the oil outlet of the injection solenoid valve is connected with an injection pipeline.

[0009] Preferably, the oil return pipeline includes that the oil return port of the gear pump is connected with a micro - regulating valve, and the oil outlet of the micro - regulating valve is connected with the oil return port of the fuel tank.

[0010] Preferably, the injection pipeline includes an atomizing nozzle and a nozzle seat, and the oil outlet of the injection solenoid valve is connected with the atomizing nozzle.

[0011] Preferably, the gear pump is a double - oil - pipe gear pump, and a gear pump solenoid valve is also arranged inside the gear pump.

[0012] On the other hand, the present invention discloses a method for using an oil circuit with stepless pressure regulation output of a double-oil-pipe gear pump, which includes the following steps: Open the micro regulating valve and adjust its opening degree to the maximum. Start the motor, which drives the gear pump to rotate through the coupling. Adjust the pressure regulating valve of the gear pump to 0.5 Mpa. At this time, reduce the opening degree of the micro regulating valve until the pressure behind the pump is 2 Mpa. Adjust the motor speed to control the change of the pressure behind the pump.

[0013] Preferably, the motor speed is 700 - 3000 r / min, and the pressure behind the pump is steplessly regulated between 0.5 Mpa and 2 Mpa.

[0014] The advantages of the present invention compared with the prior art are as follows: When the oil circuit is fixed, the fuel injector is fixed, and the pressure regulating valve of the gear pump itself remains unchanged in the present invention, by additionally setting the motor speed regulation, stepless regulation and use of the pressure behind the pump between 0.5 Mpa and 2 Mpa can be achieved, and combustion at different gears can be completed. Description of the Drawings

[0015] Figure 1 It is a structural schematic diagram of an oil circuit with stepless pressure regulation output of a double-oil-pipe gear pump.

[0016] Figure 2 It is a schematic diagram of the oil circuit process with stepless pressure regulation output of a double-oil-pipe gear pump.

[0017] As shown in the figure: 1. Burner fixed frame; 2. Combustion-supporting fan; 3. Air pressure switch; 4. Reducing joint; 5. Ignition needle; 6. Burner; 7. Atomizing nozzle and nozzle seat; 8. Flame detection needle; 9. High-voltage ignition pack; 10. Oil circuit frame; 11. Diesel control main board; 12. Fuel injection solenoid valve; 13. Pressure transmitter; 14. Three-way joint; 15. Motor controller; 16. Filter; 17. Micro regulating valve; 18. Gear pump solenoid valve; 19. Coupling; 20. Motor; 21. Double-oil-pipe gear pump; 22. Fuel tank. Detailed Embodiments

[0018] The following further elaborates on the present invention in detail with reference to the drawings.

[0019] Reference will now be provided in detail to embodiments of the present invention, one or more examples of which are described below. Each example is provided by way of explanation and not limitation of the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the scope or spirit of the present invention. For example, features described or illustrated as part of one embodiment can be used in another embodiment to yield a still further embodiment.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items.

[0021] The term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising the element.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined. In the description of the present invention, "several" means at least one, such as one, two, etc., unless otherwise specifically defined.

[0023] Combined with the attached Figure 1-2 As shown, an oil circuit with stepless pressure regulation output for a double-oil-pipe gear pump includes a fuel tank, a filter, and a gear pump connected in sequence; the gear pump is also connected to an electric motor through a coupling, and the rotational speed of the electric motor is 150 - 5300 r / min; the oil outlet of the fuel tank is connected to the oil inlet of the filter, the oil outlet of the filter is connected to the gear pump, and a return oil pipeline is connected between the gear pump and the fuel tank; the oil outlet of the gear pump is connected to a tee, the tee is respectively connected to a pressure transmitter and an injection solenoid valve, and the oil outlet of the injection solenoid valve is connected to an injection pipeline.

[0024] In specific use, the return oil pipeline includes that the return oil port of the gear pump is connected to a micro regulating valve, and the oil outlet of the micro regulating valve is connected to the return oil port of the fuel tank, while the injection pipeline includes an atomizing nozzle and a nozzle seat, and the oil outlet of the injection solenoid valve is connected to the atomizing nozzle.

[0025] The gear pump is a double-oil-pipe gear pump, and a gear pump solenoid valve is also provided inside the gear pump for use.

[0026] Usage method of the oil circuit with stepless pressure regulation output of a double - oil - pipe gear pump, including opening the micro - regulating valve, adjusting its opening to the maximum, starting the motor to drive the gear pump to rotate through the coupling, adjusting the pressure - regulating valve of the gear pump to 0.5 Mpa. At this time, reduce the opening of the micro - regulating valve until the pressure after the pump is 2 Mpa. Adjust the motor speed to control the change of the pressure after the pump, where the motor speed is 700 - 3000 r / min, so that the pressure after the pump can be steplessly regulated between 0.5 Mpa and 2 Mpa. Specific implementation method:

[0028] The oil outlet of the fuel tank is connected to the oil inlet of the filter, and the oil outlet of the filter is connected to the oil inlet of the double - oil - pipe gear pump to complete the oil - feeding pipeline of the double - oil - pipe gear pump. The oil return port of the double - oil - pipe gear pump is connected to the oil inlet of the micro - regulating valve, and the oil outlet of the micro - regulating valve is connected to the oil return port of the fuel tank to complete the oil - return pipeline of the double - oil - pipe gear pump. The oil outlet of the double - oil - pipe gear pump is connected to a tee. One end of the tee is connected to a pressure transmitter, and the other end is connected to the oil inlet of the injection solenoid valve. The oil outlet of the injection solenoid valve is connected to the atomizing nozzle and the nozzle seat to complete the oil - injection pipeline of the double - oil - pipe gear pump. An atomizing nozzle and nozzle seat, an ignition needle, and a flame - detecting needle are installed on the burner. The air inlet of the burner is connected to an auxiliary combustion blower through a reducer, and the air - detecting port on the reducer is connected to a wind pressure switch. The ignition needle is connected to a high - voltage ignition pack.

[0029] More specifically, the main - board program controls the auxiliary combustion blower to be powered on, the blower speed is 50%, the high - voltage ignition pack is powered on, the ignition needle ignites, the gear - pump solenoid valve is powered on, and the motor is powered on with a speed of 700 r / min. This is the low - oil - low - wind ignition gear. When the pressure transmitter detects that the pressure after the pump reaches 0.5 Mpa, it converts the pressure signal into an electrical signal and feeds it back to the main board. The program controls the injection solenoid valve to open, and then the ignition is successful. After the flame - detecting needle detects the flame, it feeds the signal back to the main board, and the program controls the high - voltage ignition pack to be powered off. The program divides the motor speed from 700 r / min to 3000 r / min into several different gears, and the 50% - 100% of the speed of the auxiliary combustion blower matching it is also divided into several different gears to achieve the matching of the auxiliary combustion air volume at different motor speeds. When the auxiliary combustion blower is abnormal, the wind pressure switch cannot detect the air volume, or the pressure sensor detects that the pressure after the pump does not match the pressure specified by the program, or the flame - detecting needle fails to feed back the flame signal, resulting in passive flameout or active flameout, the program controls the injection solenoid valve to be powered off, the gear pump and the gear - pump solenoid valve to be powered off, the motor to be powered off, and the auxiliary combustion blower to be powered off after a 15 - second delay to blow the remaining oil and dirt in the burner clean.

[0030] The content not described in detail in this specification belongs to the prior art well - known to those skilled in the art.

[0031] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, creatively design structural manners and embodiments similar to the technical solution, they shall fall within the protection scope of the present invention.

Claims

1. An oil circuit with stepless pressure regulation output of a double oil pipe gear pump, characterized in that: It includes an oil tank, a filter, and a gear pump connected in sequence; The gear pump is also connected to a motor via a coupling, and the motor has a rotation speed of 150-5300 r / min; The oil outlet of the oil tank is connected to the oil inlet of the filter, the oil outlet of the filter is connected to the gear pump, and an oil return pipeline is connected between the gear pump and the oil tank; The oil outlet of the gear pump is connected with a three-way pipe, the three-way pipe is respectively connected with a pressure transmitter and an oil injection solenoid valve, and the oil outlet of the oil injection solenoid valve is connected with an oil injection pipeline.

2. The oil circuit of the double oil pipe gear pump with stepless pressure regulation output according to claim 1 is characterized in that: The oil return pipeline includes an oil return port of a gear pump connected to a micro-regulating valve, and an oil outlet of the micro-regulating valve is connected to the oil return port of the oil tank.

3. The oil circuit of the double oil pipe gear pump with stepless pressure regulation output according to claim 1 is characterized in that: The fuel injection pipeline comprises an atomizing nozzle and a nozzle seat, and the oil outlet of the fuel injection solenoid valve is connected to the atomizing nozzle.

4. The oil circuit of the double oil pipe gear pump with stepless pressure regulation output according to claim 1 is characterized in that: The gear pump is a double oil pipe gear pump, and a gear pump solenoid valve is also arranged inside the gear pump.

5. A method for using an oil circuit with stepless pressure regulation output of a double oil pipe gear pump, using the oil circuit described in any one of claims 1 to 4, characterized in that: The following steps are involved: Open the micro-regulating valve and adjust its opening to the maximum. Start the motor to drive the gear pump to rotate through the coupling. Adjust the gear pump pressure regulating valve to 0.5Mpa. At this time, reduce the opening of the micro-regulating valve until the pressure after the pump is 2Mpa. Adjust the motor speed to control the change of the pressure after the pump.

6. The method for using the oil circuit of the double oil pipe gear pump with stepless pressure regulation output according to claim 5 is characterized in that: The motor speed is 700-3000r / min, and the pressure after the pump is steplessly adjustable between 0.5Mpa and 2Mpa.

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