CN214274118U

CN214274118U - Multi-way valve strengthening test bed

Info

Publication number: CN214274118U
Application number: CN202022799503.3U
Authority: CN
Inventors: 崔国栋; 唐黎明
Original assignee: Wuhu Shuangyi Hydraulic Component Co ltd
Current assignee: Wuhu Shuangyi Hydraulic Component Co ltd
Priority date: 2020-11-28
Filing date: 2020-11-28
Publication date: 2021-09-24
Anticipated expiration: 2030-11-28

Abstract

The utility model discloses a multi-way valve strengthening test bed, which comprises a hydraulic system, wherein the hydraulic system comprises an oil tank, the oil tank is connected with the oil inlet filter through a working pipeline, the oil tank is connected with the oil pump unit through a flexible pipeline, one end of the oil pump unit is connected with a pressure measuring unit through a working pipeline, the pressure measuring unit is connected with a pressure regulating unit in parallel, one end of the pressure measuring unit and one end of the pressure regulating unit are both connected with the cooler through working pipelines, the outer side of the cooler is connected with an electromagnetic water valve, one end of the cooler is connected with the oil tank through a working pipeline, the bottom end of the oil tank is provided with a check valve which is connected in parallel with a safety valve fish-ratio throttle valve through an oil pump unit, therefore, the error of the test data of the experiment table caused by insufficient oil absorption capacity of the oil pump unit is reduced, the loss of the tested multi-way valve caused by overlarge oil amount is prevented, and the test data of the experiment table is more accurate.

Description

Multi-way valve strengthening test bed

Technical Field

The utility model relates to an engineering machine tool technical field specifically is a test bench is reinforceed to multiple unit valve.

Background

The multi-way valve is integrally designed in a unified modular mode, a reliable system solution can be provided for manufacturers of engineering vehicles, different combinations can be performed on valve bodies according to functional requirements, and the multi-way valve is simple and reliable, can be a simple load-sensitive manual multi-way valve, and can also be an electric control proportional control valve with a non-saturation function, which is irrelevant to load and pump flow.

The multi-way valve, which is a key component of a hydraulic system of an engineering machine, is required to meet the requirements of multi-action operation of an actuating mechanism and oil supply control of a multi-pump converging system, improve the productivity and reduce the energy loss as much as possible, and the multi-way valve is necessary to test and set various connection parameters.

However, when the existing test bed for testing the multi-way valve and setting each connection parameter is used, the accuracy of the test data measured by the test bed is not high enough.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by the utility model

An object of the utility model is to provide a test bench is reinforceed to the multiple unit valve to when solving current test bench that tests and set up each contact parameter to the multiple unit valve and use, the test bench surveys the problem that the experimental data accuracy is high inadequately.

Technical scheme

In order to achieve the above object, the utility model provides a technical scheme does:

the utility model provides a test bench is reinforceed to multiple unit valve, includes hydraulic system, hydraulic system is including the oil tank, the oil tank is strained with the oil feed through the working line and is connected, the oil tank passes through flexible pipeline and is connected with oil pump unit, oil pump unit one end is passed through the working line and is connected with pressure cell, pressure cell is parallelly connected with the pressure regulating unit, pressure cell one end with pressure regulating unit one end all is connected with the cooler through the working line, the cooler outside is connected with the electromagnetism water valve, cooler one end pass through the working line with the oil tank is connected, the oil tank bottom is equipped with the check valve.

Preferably, the oil pump unit includes inverter motor, the inverter motor output is connected with the plunger pump, plunger pump one end pass through flexible pipeline with the oil tank is connected, the plunger pump other end is strained with one-level oil through flexible pipeline and is connected, one end is strained with second oil through working line and is connected to first oil, second oil is strained one end and is passed through working line and be connected with the check valve, the check valve oil outlet end pass through working line with the pressure cell is connected.

Preferably, the pressure measuring unit comprises a flow meter, a pressure sensor is arranged in the flow meter, one end of the flow meter is connected with the measured multi-way valve through a flexible pipeline, the measured multi-way valve is connected with the oil return filter through a flexible pipeline, and one end of the oil return filter is connected with the cooler through a working pipeline.

Preferably, the pressure regulating unit comprises a proportional throttle valve, the proportional throttle valve is connected with a safety valve in parallel, and one end of the proportional throttle valve and one end of the safety valve are both connected with the cooler through working pipelines.

Preferably, the oil tank includes liquid level relay, liquid level relay one side is equipped with liquid level liquid thermometer, just liquid level liquid thermometer with the oil tank is connected, liquid level liquid thermometer one side is equipped with air cleaner, just air cleaner one end pass through the working line with the oil tank is connected.

Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

1. because plunger and the plunger hole of plunger pump are mostly the circular part, accurate cooperation, have higher volumetric efficiency, thereby make the oil pump unit have higher oil absorption ability, and then reduce the oil pump unit oil absorption ability and bring laboratory bench test data error inadequately, improve laboratory bench test data degree of accuracy, parallelly connected through relief valve and proportion choke valve, thereby make the inflow surveyed the multiple unit valve oil mass more stable, prevent that the oil mass is too big to being surveyed the multiple unit valve and cause the loss, and then make the laboratory bench test data degree of accuracy further improve.

2. The oil entering the oil tank is filtered for the first time through the oil feed rate, so that the plunger pump is prevented from being damaged by impurities in the oil, the oil in the oil tank is sucked into the oil pump through the variable frequency motor, the oil is sent into the first-stage oil filter through the oil pump for secondary filtration, the oil after the secondary filtration enters the second-stage oil filter along a working pipeline for tertiary filtration, so that the cleanness of the oil in the pipeline is ensured, the oil passing through the tested multi-way valve is filtered for the fourth time through the oil return filter, and the cleanness of the oil in the oil tank is ensured.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the hydraulic system comprises a hydraulic system, 11, an oil tank, 111, a liquid level relay, 112, a liquid level liquid thermometer, 113, an air filter, 12, an oil inlet filter, 13, an oil pump unit, 131, a variable frequency motor, 132, a plunger pump, 133, a primary oil filter, 134, a secondary oil filter, 135, a one-way valve, 14, a pressure measuring unit, 141, a flowmeter, 142, a pressure sensor, 143, a tested multi-way valve, 144, an oil return filter, 15, a pressure regulating unit, 151, a proportional throttle valve, 152, a safety valve, 16, a cooler, 17, an electromagnetic water valve, 18 and a check valve.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

The embodiment, please refer to fig. 1, a test bench is reinforceed to multiple unit valve, including hydraulic system 1, hydraulic system 1 is including oil tank 11, oil tank 11 is strained 12 with the oil feed through the working line and is connected, oil tank 11 is connected with oil pump unit 13 through flexible pipeline, oil pump unit 13 one end is passed through the working line and is connected with pressure cell 14, pressure cell 14 is parallelly connected with pressure regulating unit 15, pressure cell 14 one end with 15 one end of pressure regulating unit all is connected with cooler 16 through the working line, the 16 outside of cooler is connected with

electromagnetism water valve

17, 16 one end of cooler pass through the working line with oil tank 11 connects, 11 bottoms of oil tank are equipped with check valve 18.

In an embodiment, please refer to fig. 1, the oil pump unit 13 includes a variable frequency motor 131, an output end of the variable frequency motor 131 is connected to a plunger pump 132, one end of the plunger pump 132 is connected to the oil tank 11 through a flexible pipeline, the other end of the plunger pump 132 is connected to a primary oil filter 133 through a flexible pipeline, one end of the primary oil filter 133 is connected to a secondary oil filter 134 through a working pipeline, one end of the secondary oil filter 134 is connected to a check valve 135 through a working pipeline, and an oil outlet end of the check valve 135 is connected to the pressure measuring unit 14 through a working pipeline.

In this embodiment, the plungers and plunger holes of the plunger pump 11 are mostly circular parts, and the variable frequency motor 131 is connected to the plunger pump 11 through a rotational movement shaft.

In an embodiment, referring to fig. 1, the pressure measuring unit 14 includes a flow meter 141, a pressure sensor 142 is disposed in the flow meter 141, one end of the flow meter 141 is connected to a tested multi-way valve 143 through a flexible pipeline, the tested multi-way valve 143 is connected to an oil return filter 144 through a flexible pipeline, and one end of the oil return filter 144 is connected to the cooler 16 through a working pipeline.

In this embodiment, the valve rod of the tested multi-way valve 143 is connected to the pneumatic fixture reversing mechanism, and the tested multi-way valve 143 is flexibly connected to the electric cylinder servo motor through the floating joint, so that the tested multi-way valve 143 is turned for many times, and the reversing function and the service life of the multi-way valve are tested.

In an embodiment, referring to fig. 1, the pressure regulating unit 15 includes a proportional throttle valve 151, the proportional throttle valve 151 is connected in parallel with a safety valve 152, and one end of the proportional throttle valve 151 and one end of the safety valve 152 are both connected to the cooler 16 through a working pipeline.

In an embodiment, please refer to fig. 1, the oil tank 11 includes a liquid level relay 111, a liquid level thermometer 112 is disposed on one side of the liquid level relay 111, the liquid level thermometer 112 is connected to the oil tank 11, an air filter 113 is disposed on one side of the liquid level thermometer 112, and one end of the air filter 113 is connected to the oil tank 11 through a working pipeline.

The utility model discloses a theory of operation:

when the oil filter is used, firstly, oil is sent into the oil tank 11 through the oil inlet filter 12, the variable frequency motor 131 drives the plunger pump 132 to suck the oil into the plunger pump 132 from the oil tank 11, the oil is sent into the primary oil filter 133 along the working pipe through the plunger pump 132, flows into the secondary oil filter 134 through the primary oil filter 133, flows into the flow meter 141 through the secondary oil filter 134 and the one-way valve 135, and simultaneously, the pressure sensor 142 measures the pressure of the oil, so that the oil flow and the pressure are measured, and then the oil flows into the measured multi-way valve 143 through the flow meter 141.

Then, the electric cylinder servo motor drives the steering mechanism, and the steering mechanism drives the valve rod to move back, so as to adjust the flow direction of the oil in the tested multi-way valve 143, when the flow direction of the oil in the tested multi-way valve 143 changes, the safety valve 152 keeps the flow rate of the oil in the working pipeline stable, and meanwhile, the proportional throttle valve 151 adjusts the pressure of the oil in the working pipeline, so that the oil flowing into the tested multi-way valve 143 is more stable.

Finally, the oil tank 11 is communicated through the cooler 16, meanwhile, the electromagnetic water valve 17 sends water into the cooler 16 through a pipeline to cool oil, so that the oil temperature of the oil tank 11 is kept constant, the temperature in the oil tank 11 is clearly known through the liquid level liquid thermometer 112, then the air filter 113 is connected with the atmosphere, the balance of air in the oil tank is kept, then the oil level in the oil tank 11 is kept stable through the liquid level relay 111, and when the oil level is too high, the check valve 18 is opened to drain the oil.

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

1. The utility model provides a test bench is reinforceed to multiple unit valve, its characterized in that includes hydraulic system (1), hydraulic system (1) is including oil tank (11), oil tank (11) are strained (12) through working line and oil feed and are connected, oil tank (11) are connected with oil pump unit (13) through flexible pipeline, oil pump unit (13) one end is passed through working line and is connected with pressure cell (14), pressure cell (14) are parallelly connected with pressure regulating unit (15), pressure cell (14) one end with pressure regulating unit (15) one end all is connected with cooler (16) through working line, the cooler (16) outside is connected with electromagnetism water valve (17), cooler (16) one end pass through working line with oil tank (11) are connected, oil tank (11) bottom is equipped with check valve (18).

2. The multi-way valve strengthening test bed according to claim 1, wherein: oil pump unit (13) include inverter motor (131), inverter motor (131) output is connected with plunger pump (132), plunger pump (132) one end pass through flexible pipeline with oil tank (11) are connected, plunger pump (132) other end is strained with one-level oil through flexible pipeline (133) and is connected, one-level oil is strained (133) one end and is strained (134) through working line and second level oil and is connected, second level oil is strained (134) one end and is passed through working line and be connected with check valve (135), check valve (135) play oil end pass through working line with pressure cell (14) are connected.

3. The multi-way valve strengthening test bed as recited in claim 2, wherein: the pressure measuring unit (14) comprises a flow meter (141), a pressure sensor (142) is arranged in the flow meter (141), one end of the flow meter (141) is connected with a tested multi-way valve (143) through a flexible pipeline, the tested multi-way valve (143) is connected with an oil return filter (144) through a flexible pipeline, and one end of the oil return filter (144) is connected with the cooler (16) through a working pipeline.

4. The multi-way valve strengthening test bed according to claim 1, wherein: the pressure regulating unit (15) comprises a proportional throttle valve (151), the proportional throttle valve (151) is connected with a safety valve (152) in parallel, and one end of the proportional throttle valve (151) and one end of the safety valve (152) are connected with the cooler (16) through working pipelines.

5. The multi-way valve strengthening test bed according to claim 1, wherein: oil tank (11) include liquid level relay (111), liquid level relay (111) one side is equipped with liquid level liquid thermometer (112), just liquid level liquid thermometer (112) with oil tank (11) are connected, liquid level liquid thermometer (112) one side is equipped with air cleaner (113), just air cleaner (113) one end pass through the working line with oil tank (11) are connected.