CN214742398U

CN214742398U - Vacuum liquid pumping device

Info

Publication number: CN214742398U
Application number: CN202022835145.7U
Authority: CN
Inventors: 周迎春
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-11-16
Anticipated expiration: 2030-12-01

Abstract

The utility model discloses a liquid device is taken out in vacuum, including a jar body and cylinder, be provided with the piston in the cylinder, piston one side is provided with the pneumatic valve, the piston rod is connected to the piston rod, the drive handle so that the piston reciprocates, the piston cuts off the cylinder for epicoele room and cavity down, jar body surface has the inlet, the feed liquor pipe is connected to the inlet, go up the cavity upper end and switch on through first pipeline and jar internal chamber, be provided with first check valve in the first pipeline, the pipeline of ventilating has in the piston rod, pipeline of ventilating one end extends to the piston lower surface and realizes switching on with cavity down, and the other end extends to the drive handle and switches on in order to switch on with the external world of jar, be provided with the second check valve in the pipeline of ventilating. The utility model provides a pair of vacuum pumping device, control drive handle make the piston reciprocate can realize the extraction of fluid, can effectively improve fluid efficiency through set up vent pipe in the piston rod, its stable performance, simple structure are reasonable, and application scope is extensive.

Description

Vacuum liquid pumping device

Technical Field

The utility model relates to a technical field is carried to car fluid, in particular to vacuum pumping device.

Background

The braking system in which the vehicle is decelerated during driving until it stops is referred to as the service braking system. The braking system can be classified into mechanical, hydraulic, pneumatic, electromagnetic, etc.

For example, a service brake system of a car adopts a hydraulic brake device, which mainly comprises a brake master cylinder (master cylinder), a hydraulic pipeline, a brake cylinder (brake wheel cylinder) in a rear wheel drum type (disc type) brake, a hydraulic wheel cylinder in a front wheel caliper disc type brake and the like. The connecting oil pipe between the main cylinder and the wheel cylinder uses a metal pipe (copper pipe) and a special rubber brake hose. The hydraulic system is filled with brake fluid, which is the medium for transmitting pressure in the hydraulic brake system.

The brake fluid of the hydraulic brake system is communicated with the atmosphere, and the brake fluid absorbs the moisture in the air, so that the braking efficiency is reduced; as the brake fluid reciprocates in the brake pipeline, the metal powder of the brake master cylinder and the brake slave cylinder can seep into the brake fluid, and impurities can be generated after a period of time, so that the braking force of a vehicle is directly influenced. According to the technical requirements of vehicles, brake fluid needs to be replaced every 2 years or 50000 kilometers, and over-term use can cause air resistance or blockage in a brake pipeline, influence the brake performance, corrode the brake pipeline, cause damage to a brake assembly and seriously influence the brake effect.

At present, the brake fluid is generally replaced by two ways, one is to use the brake fluid replacing machine. The working principle of the device is to inject brake fluid into a vehicle at positive pressure through air pressure. The advantage is the aspect of operation, and the condition that is difficult to produce the air admission. However, the whole equipment is expensive, and only 4S stores or large-scale maintenance stations have the equipment. The second method is to manually replace the brake fluid or perform a bleeding operation. When the rubber tube is replaced, at least 2 maintenance personnel are needed to work in a matched mode, a cowhells tube and an empty bottle are used, a half bottle of brake fluid is added, then one end of the rubber tube is placed in the brake fluid, and the other end of the rubber tube is sleeved with the oil discharging port. Then loosen the oil drain screw, the person above steps on the brake, when seeing that oil at the oil outlet is fast to be gone up, the person above refuels, after filling up, steps on the brake again, like this relapse, it is clear to see oil that comes out below always, can stop the air to get into, also can judge through seeing that there is not the bubble that has emerged in the water. Or the brake master cylinder oil storage box is filled with brake fluid, and one person continuously steps on the brake pedal in the cab until the brake pedal cannot be stepped on, and the brake pedal cannot be stepped on. Another person loosens the air release screw sleeve of the wheel brake cylinder under the vehicle to discharge the old brake fluid (air), and the air release screw sleeve is screwed tightly to loosen the brake pedal after the brake pedal descends to the bottom. Repeating the operation for multiple times until the wheel cylinder discharges fresh brake fluid (without air bubbles), and repeating the operation process for other wheels.

The first of the existing modes of operation is limited by unit size and is not practical for the fleet of motor vehicles. In the second mode, the maintenance personnel must be closely matched, if a wheel cylinder air release screw sleeve is not tightly twisted, the brake pedal is released, and air enters the brake pipeline along with the air. After the brake system is continuously and violently stepped, faults such as damage of a master cylinder (branch pump) leather cup, frequent opening (failure) of an ABS (anti-lock brake system) pump and the like can occur. And the air release screw sleeve is easy to be damaged by torsion, the brake fluid overflows to corrode parts, and the environment is polluted. The probability that operators under the vehicle are injured by the exhaust gas of the vehicle is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to prior art not enough, the utility model provides a device of stable performance, simple structure can realize the vacuum drawing of liquid.

In order to achieve the purpose, the utility model provides a vacuum liquid pumping device, including a tank body and a cylinder, be provided with the piston in the cylinder, piston one side is provided with the pneumatic valve, the piston is connected the piston rod, the piston rod is connected the drive handle so that the piston reciprocates, the piston cuts off the cylinder into upper chamber and lower chamber, tank body surface has the inlet, the inlet is connected the feed liquor pipe, upper end of upper chamber is switched on with tank body inner chamber through first pipeline, be provided with first check valve in the first pipeline, have the pipeline of ventilating in the piston rod, pipeline of ventilating one end extends to piston lower surface and lower chamber and realizes switching on, the other end extends to the drive handle so as to switch on with the external world of tank body, be provided with the second check valve in the pipeline of ventilating;

when vacuum liquid pumping is needed, the driving handle is controlled to enable the piston to move downwards, when the piston moves downwards, negative pressure is formed in the upper chamber so that negative pressure is formed in the inner cavity of the tank body communicated with the upper chamber, and meanwhile air in the lower chamber is exhausted from the driving handle through a vent pipeline in the piston rod; when the piston moves upwards, the upper chamber and the lower chamber are communicated through the air valve on one side of the piston, at the moment, the one-way valves are closed, and the driving handle is controlled in a reciprocating mode to enable the piston to move up and down to enable negative-pressure oil in the inner cavity of the tank body to enter the tank body through the liquid inlet pipe, so that the purpose of liquid pumping is achieved.

Preferably, the cylinder is disposed in the tank body.

According to the technical scheme, the lower end of the lower cavity is communicated with the outside of the tank body through the second pipeline, the third one-way valve is arranged in the second pipeline, when vacuum liquid pumping is needed, the driving handle is controlled to enable the piston to move downwards, when the piston moves downwards, the upper cavity forms negative pressure so that the inner cavity of the tank body communicated with the upper cavity forms negative pressure, meanwhile, air in the lower cavity is discharged through the vent pipeline in the piston rod and the second pipeline, and when the inner cavity of the tank body forms negative pressure oil liquid, the oil liquid enters the tank body through the liquid inlet pipe.

The utility model provides a pair of vacuum pumping device, control drive handle make the piston reciprocate can realize the extraction of fluid, can effectively improve fluid efficiency through set up vent pipe in the piston rod, its stable performance, simple structure are reasonable, and application scope is extensive.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below, and it is obvious that the drawings listed below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the vacuum pumping device provided in this embodiment 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a vacuum liquid pumping device, including jar body 1 and cylinder 3, be provided with piston 4 in the cylinder 3, piston one side is provided with the pneumatic valve, piston 4 connects the piston rod, the piston rod connects drive handle 5 so that the piston reciprocates, the piston cuts off the cylinder for last chamber 6 and lower chamber 7, jar body surface has inlet 2, the inlet connects feed liquor pipe 10, go up the chamber upper end and switch on through first pipeline 11 with jar body inner chamber, be provided with first check valve 12 in the first pipeline, the piston rod has vent pipe 13, vent pipe one end extends to piston lower surface and lower chamber and realizes switching on, and the other end extends to the drive handle and switches on with jar body external world, the vent pipe is provided with second check valve 14;

when vacuum liquid pumping is needed, the driving handle is controlled to enable the piston to move downwards, when the piston moves downwards, negative pressure is formed in the upper chamber so that negative pressure is formed in the inner cavity of the tank body communicated with the upper chamber, meanwhile, air in the lower chamber is exhausted from the driving handle through a vent pipeline in the piston rod, and when negative pressure oil liquid formed in the inner cavity of the tank body enters the tank body through the liquid inlet pipe; when the piston moves upwards, air in the cylinder barrel 3 enters the lower chamber, and the driving handle is controlled in a reciprocating mode to enable the piston to move up and down so that oil can enter the tank body through the liquid inlet pipe, and the purpose of liquid pumping is achieved.

The cylinder barrel can be arranged in the tank body to save space. The lower end of the lower cavity is communicated with the outside of the tank body through a second pipeline 8, a third one-way valve 9 is arranged in the second pipeline 8, when vacuum liquid pumping is needed, the driving handle is controlled to enable the piston to move downwards, when the piston moves downwards, the upper cavity forms negative pressure so that the inner cavity of the tank body communicated with the upper cavity forms negative pressure, meanwhile, air in the lower cavity is discharged through a vent pipeline and the second pipeline in the piston rod, and when the inner cavity of the tank body forms negative pressure oil liquid, the oil liquid enters the tank body through a liquid inlet pipe.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A vacuum liquid pumping device comprises a tank body (1) and a cylinder barrel (3), wherein a piston (4) is arranged in the cylinder barrel (3), an air valve is arranged on one side of the piston, the piston is connected with a piston rod, the piston rod is connected with a driving handle (5) to enable the piston to move up and down, the piston separates the cylinder barrel into an upper chamber (6) and a lower chamber (7), it is characterized in that the surface of the tank body is provided with a liquid inlet (2) which is connected with a liquid inlet pipe (10), the upper end of the upper cavity is communicated with the inner cavity of the tank body through a first pipeline (11), a first one-way valve (12) is arranged in the first pipeline, an air duct (13) is arranged in the piston rod, one end of the air duct extends to the lower surface of the piston to be communicated with the lower chamber, the other end of the air duct extends to the driving handle to be communicated with the outside of the tank body, and a second one-way valve (14) is arranged in the air duct;

2. The vacuum pumping apparatus as defined in claim 1, wherein the cylinder is disposed in the tank body.

3. The vacuum pumping device according to claim 1, wherein the lower end of the lower chamber is communicated with the outside of the tank body through a second pipeline (8), a third one-way valve (9) is arranged in the second pipeline (8), when vacuum pumping is required, the driving handle is controlled to enable the piston to move downwards, when the piston moves downwards, negative pressure is formed in the upper chamber to enable the inner cavity of the tank body communicated with the upper chamber to form negative pressure, meanwhile, air in the lower chamber is exhausted through a vent pipeline in the piston rod and the second pipeline, and when negative pressure oil formed in the inner cavity of the tank body enters the tank body through the liquid inlet pipe.