CN219139335U

CN219139335U - Exhaust device of plunger pump

Info

Publication number: CN219139335U
Application number: CN202320048516.8U
Authority: CN
Inventors: 徐贤德; 马青松; 龚金宏
Original assignee: Wuhan Jiaqi Xinyang Technology Development Co ltd
Current assignee: Wuhan Jiaqi Xinyang Technology Development Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-06-06
Anticipated expiration: 2033-01-09

Abstract

The utility model provides an exhaust device of a plunger pump, which comprises the plunger pump, wherein one end of the plunger pump is communicated with a one-way valve through a pipeline, and one end of the one-way valve, which is separated from the plunger pump, is communicated with the plunger pump; the exhaust device does not need an additional driving source to actively exhaust, has a simple structure, does not need to input more cost to increase a complex structure, is simple to operate, and can complete exhaust in self-circulation.

Description

Exhaust device of plunger pump

Technical Field

The utility model relates to the technical field of vehicle driving, in particular to an exhaust device of a plunger pump.

Background

The hydraulic braking system is used for braking the vehicle, so that the vehicle is decelerated to a stop, and the traveling speed of the vehicle is faster and faster, and the load of certain vehicle types is heavier and heavier, so that the conventional vacuum booster device cannot meet the traveling requirement of the vehicle gradually. The characteristics of sensitive response, no hysteresis, no interference to external environment factors and the like of the hydraulic braking system are widely used.

When gas is mixed into a hydraulic braking system, the gas is mixed with brake fluid, on one hand, the efficiency of a plunger pump is greatly reduced, the system performance is seriously affected by too slow rise of the system pressure, and even the system is disabled. Thus, venting the hydraulic brake system is necessary. In the existing plunger pump exhaust method in the market, a booster pump is additionally arranged on the oil suction port, so that the structure is more complicated and the cost is higher.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides an exhaust device of a plunger pump, which can exhaust a plunger pump assembly in a hydraulic system.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an exhaust device of a plunger pump, which comprises three plunger pumps, wherein one ends of the three plunger pumps are communicated with a one-way valve through a pipeline, and one ends of the one-way valve, which are separated from the three plunger pumps, are communicated with an energy accumulator.

Further, one end of the energy accumulator, which is separated from the one-way valve, is communicated with the oil pot.

Further, a pressure sensor and a normally closed electromagnetic valve are arranged between the energy accumulator and the oil can.

Further, the pressure sensor and the normally closed electromagnetic valve are arranged in series.

Further, the pressure sensor is disposed adjacent to the accumulator; the normally closed electromagnetic valve is arranged away from the energy accumulator.

Further, the other end of the motor is communicated with the oilcan.

Further, a normally open electromagnetic valve is arranged on the oil pot.

Further, a motor controller is arranged on the plunger pump.

The beneficial effects of the utility model are as follows: the exhaust device does not need an additional driving source to actively exhaust, has a simple structure, does not need to input more cost to increase a complex structure, is simple to operate, and can complete exhaust in self-circulation.

Drawings

Fig. 1 is a schematic structural view of an exhaust device of a plunger pump according to the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1, an exhaust device of a plunger pump includes a plunger pump 1, one end of the plunger pump 1 is communicated with a check valve 2 through a pipeline, and one end of the check valve 2 separated from the plunger pump 1 is communicated with an accumulator 3.

In a specific embodiment, the one-way valve 2 allows oil to flow in one direction from the plunger pump 1 to the accumulator 3.

The end of the energy accumulator 3, which is separated from the one-way valve 2, is communicated with the oilcan 4.

In a specific embodiment, the material of the oilcan 4 is high pressure resistant.

A pressure sensor 5 and a normally closed electromagnetic valve 6 are arranged between the energy accumulator 3 and the oil pot 4.

The pressure sensor 5 and the normally closed electromagnetic valve 6 are arranged in series.

In a specific embodiment, the normally closed solenoid valve 6 is in a normally closed state; when the gaps in the plunger pump are required to be exhausted, the normally-closed electromagnetic valve 6 is opened, so that hydraulic oil enters the oilcan 4 through the pipeline, and the pressure of the hydraulic oil in the oilcan 4 is increased due to the fact that the normally-open electromagnetic valve 7 arranged in the oilcan 4 is in a closed state and is pushed into the gaps in the plunger pump through the pipeline, and accordingly exhaust is carried out.

The pressure sensor 5 is arranged adjacent to the energy store 3; the normally closed electromagnetic valve 6 is arranged away from the energy accumulator 3.

The accumulator 3 stores high-pressure brake fluid, the motor drives the plunger pump to pump the brake fluid into the accumulator, and after the brake fluid enters the accumulator, the accumulator becomes a high-pressure power source, and at the moment, the pressure sensor 5 monitors the pressure of the accumulator.

The other end of the plunger pump 1 is communicated with the oilcan 4.

The oilcan 4 is provided with a normally open electromagnetic valve 7.

In a specific embodiment, the normally open solenoid valve 7 is normally open; when it is necessary to vent the gap around the plunger pump, the normally open solenoid valve 7 is closed.

A motor controller 8 is arranged on the plunger pump 1

In a specific embodiment, the motor controller 8 is used to control the start or stop of the motor.

In order to facilitate understanding of the above technical solutions of the present utility model, the following details are about the working principle or operation mode of the present utility model in the actual process:

the exhaust process of the system comprises the following steps:

as a special exhaust device

When the pressure of the accumulator 3 reaches a certain value, the normally open electromagnetic valve 7 on the oilcan 4 is closed, the normally open electromagnetic valve 6 is opened greatly, high-pressure oil flows back to the oilcan 4 at the moment, the pressure of the oilcan 4 can rise at the moment because the oilcan 4 is in a completely closed state, the high-pressure can act on the oil suction port of the accumulator 3, the braking hydraulic pressure is applied to all gaps in the plunger pump to complete the exhaust, the normally open electromagnetic valve 7 on the oilcan 4 is opened again after the multiple times of exhaust, and the gas with pressure in the oilcan 4 is discharged.

As part of the EHB system:

in the EHB system, the servo valve core structure replaces the normally closed electromagnetic valve 6, only the normally open electromagnetic valve 7 on the oilcan 4 is required to be closed, the system is enabled to work normally, in the process of the servo valve core structure action, under the same principle, gas in the system can be continuously discharged into the oilcan 4, air enters the subsequent system again, the air can be discharged into the oilcan 4 under the normal operation of the system, and the excessive air can be discharged only by periodically opening the normally open electromagnetic valve 7 on the oilcan 4.

Compared with the traditional hydraulic power assisting system, a pipeline for balancing air pressure is additionally arranged between the oilcan and the outside, and a normally open electromagnetic valve is connected to the pipeline; a normally closed electromagnetic valve is connected to the output pipeline of the plunger pump; in addition, the oil pot is different from a common oil pot, and the oil pot needs to be replaced by adopting a high-pressure resistant oil pot. When the exhaust is carried out, the exhaust method is different from other exhaust methods, the system does not need to be subjected to additional exhaust operation, and an additional exhaust device is not needed, so that the material cost and the time cost can be greatly saved. The system can be directly applied to a complete EHB system.

Compared with the traditional braking system, the device has the advantages that the normally open electromagnetic valve is additionally arranged at the top of the oil can, and the oil can is replaced by the high-pressure resistant oil can. If the system is used as a special exhaust device, a normally closed electromagnetic valve is required to be added at the output end of the plunger pump; if the system is desired to be used as part of a complete EHB system, the normally closed solenoid valve at the output may be eliminated.

The foregoing examples merely illustrate embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present patent is to be determined by the appended claims.

Claims

1. An exhaust device of a plunger pump, which is characterized in that: the hydraulic pump comprises a plunger pump (1), wherein one end of the plunger pump (1) is communicated with a one-way valve (2) through a pipeline, and one end of the one-way valve (2) separated from the plunger pump (1) is communicated with an energy accumulator (3).

2. The exhaust apparatus of a plunger pump as set forth in claim 1, wherein: one end of the energy accumulator (3) which is separated from the one-way valve (2) is communicated with the oil pot (4).

3. The exhaust apparatus of a plunger pump as set forth in claim 2, wherein: a pressure sensor (5) and a normally closed electromagnetic valve (6) are arranged between the energy accumulator (3) and the oil pot (4).

4. A plunger pump venting device as claimed in claim 3, wherein: the pressure sensor (5) and the normally closed electromagnetic valve (6) are arranged in series.

5. The exhaust apparatus of a plunger pump as set forth in claim 4, wherein: the pressure sensor (5) is arranged adjacent to the energy accumulator (3); the normally closed electromagnetic valve (6) is arranged away from the energy accumulator (3).

6. The exhaust apparatus of a plunger pump as set forth in claim 5, wherein: the other end of the plunger pump (1) is communicated with the oil pot (4).

7. The exhaust apparatus of a plunger pump as set forth in claim 6, wherein: the normally open electromagnetic valve (7) is arranged on the oil pot (4).

8. The exhaust apparatus of a plunger pump as set forth in claim 7, wherein: and a motor controller (8) is arranged on the plunger pump (1).