CN214578004U

CN214578004U - Deviation-correcting hydraulic system of roller press

Info

Publication number: CN214578004U
Application number: CN202120666137.6U
Authority: CN
Inventors: 李澄; 肖建平; 徐庄明; 徐亮
Original assignee: Wuxi Guocheng Hydraulic Machinery Manufacturing Co ltd
Current assignee: Wuxi Guocheng Hydraulic Machinery Manufacturing Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-02
Anticipated expiration: 2031-04-01

Abstract

The application relates to the field of deviation correcting systems of roller presses, in particular to a deviation correcting hydraulic system of a roller press. The hydraulic pressure source is divided into two output oil paths, an oil path switch, a three-position four-way valve and a two-way hydraulic cylinder are sequentially arranged in each output oil path, the two-way hydraulic cylinder is used for being connected with a compression roller of a roller press, a bypass branch is communicated between the oil path switch and the three-position four-way valve, a pressure relief assembly is arranged in the bypass branch, and one end, far away from the output oil path, of the pressure relief assembly is communicated with an oil tank. The application has the effect of reducing the condition that the hydraulic cylinder is retracted by external force to influence the extrusion effect.

Description

Deviation-correcting hydraulic system of roller press

Technical Field

The application relates to the field of deviation correcting systems of roller presses, in particular to a deviation correcting hydraulic system of a roller press.

Background

The roller press has the functions of replacing a ball mill pre-grinding system with high energy consumption and low efficiency and reducing steel consumption and noise. The roller press improves the yield of a ball mill system by 30-50%, the 0.08mm fine material in the extruded material cake accounts for 20-35%, the material cake smaller than 2mm accounts for 65-85%, the internal structure of small particles is filled with a plurality of tiny cracks due to extrusion, and the grindability is greatly improved.

When the roller press extrudes materials, the materials are unevenly distributed along the width direction of the roller, so that the deviation of the roller gaps on the left side and the right side of the roller press is overlarge, and the overlarge deviation of the roller gaps can influence the normal operation of the bearing.

The utility model with the grant publication number of CN204544294U discloses a hydraulic system for correcting the position of a roller press. The deviation-correcting hydraulic system of the roller press comprises a hydraulic cylinder, an energy accumulator, a throttle valve, an electromagnetic ball valve, an electromagnetic overflow valve, a pressurizing electromagnetic ball valve, a hydraulic gear pump, a manual ball valve, a pressure sensor and a pump station overflow valve, wherein the throttle valve, the electromagnetic ball valve and the electromagnetic overflow valve are arranged in parallel, the pressure sensor is used for monitoring the pressure of the hydraulic cylinder in real time, and the manual ball valve is arranged in front of the throttle valve, the electromagnetic ball valve and the electromagnetic overflow valve.

To the correlation technique among the aforesaid, the inventor thinks that the pneumatic cylinder has adopted the single-action pneumatic cylinder, and the compression roller and the pneumatic cylinder of roll squeezer are connected, because the compression roller need extrude the material, the piston rod of pneumatic cylinder can receive the reaction force of material, and the single-action pneumatic cylinder only has an effective effect area, and the piston rod receives external force and easily resets the withdrawal for the compression roller is not enough to the extrusion force of material, influences the extrusion effect.

SUMMERY OF THE UTILITY MODEL

Thereby receive the condition that external force retracted influences the extrusion effect in order to reduce the pneumatic cylinder, this application provides a hydraulic system of rectifying of roll squeezer.

The application provides a pair of hydraulic system that rectifies of roll squeezer adopts following technical scheme:

the utility model provides a hydraulic system of rectifying of roll squeezer, includes the hydraulic pressure source, the hydraulic pressure source falls into two way output oil circuit, every way set gradually oil circuit switch, tribit cross valve and two-way pneumatic cylinder in the output oil circuit, two-way pneumatic cylinder is used for being connected with the compression roller of roll squeezer, the intercommunication has the bypass branch road between oil circuit switch and the tribit cross valve, be provided with the release subassembly in the bypass branch road, the one end intercommunication that the output oil circuit was kept away from to the release subassembly has the oil tank.

Through adopting above-mentioned technical scheme, when extrudeing the material, the motion of drive tribit cross valve for hydraulic source and two-way pneumatic cylinder intercommunication, compression roller extrude the material. When the pressure in the output oil way is overlarge, the pressure relief assembly in the bypass branch is used for relieving pressure. Because the bidirectional hydraulic cylinder has two effective action areas, the retraction of the piston rod is controlled by the output oil way, and the possibility that the hydraulic cylinder is retracted by external force is reduced.

Optionally, a pressure gauge is further arranged on the output oil path, and the pressure gauge is located between a connection point of the bypass branch and the output oil path and the three-position four-way valve.

Through adopting above-mentioned technical scheme, through setting up the manometer, can carry out real time monitoring to the pressure value in the output oil circuit.

Optionally, the pressure relief assembly includes a relief valve and a throttle valve connected in parallel.

By adopting the technical scheme, the pressure relief of the output oil way is realized through the overflow valve and the throttle valve which are connected in parallel, and the pressure of the pressure relief can be controlled by adjusting the size of the throttle valve.

Optionally, the throttle valve is connected in series with a two-position two-way valve, the throttle valve and the two-position two-way valve which are connected in series form a branch, and the branch is connected in parallel with the branch where the overflow valve is located.

Through adopting above-mentioned technical scheme, establish ties throttle valve and two-position two-way valve, increased a switch for the release subassembly in other words, when the pressure in the output oil circuit is not enough, can not carry out the release.

Optionally, the two-position and two-way valve is driven by electromagnetism, and the two-position and two-way valve is electrically connected with the pressure gauge.

Through adopting above-mentioned technical scheme, when the manometer shows that the pressure in the output oil circuit is too big, two-position two-way valve intercommunication, the release subassembly is released the pressure.

Optionally, a pump station overflow valve is communicated between the flow dividing valve and the hydraulic source, and one end of the pump station overflow valve, which is far away from the output oil way, is communicated with the oil tank.

By adopting the technical scheme, the output oil way is protected by arranging the overflow valve of the pump station, and the possibility of safety accidents caused by overlarge pressure output by the hydraulic source is reduced.

Optionally, the hydraulic source is divided into two output oil paths by a splitter valve.

By adopting the technical scheme, one hydraulic source supplies the same flow to the two output oil paths by arranging the flow dividing valve.

Optionally, the three-position four-way valve is driven by an electromagnet and is electrically connected with the pressure gauge.

By adopting the technical scheme, when the pressure gauge displays that the pressure in the output oil way is insufficient, the three-position four-way valve is driven to pressurize.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the pressure relief assembly, pressure can be relieved when the pressure in the output oil way is overlarge;

2. through setting up the manometer, can carry out real time monitoring to the pressure in the output oil circuit.

Drawings

FIG. 1 is a connection diagram of a deviation-correcting hydraulic system of a roller press.

Description of reference numerals: 1. a hydraulic source; 10. a pump station overflow valve; 11. a flow divider valve; 2. an output oil path; 21. an oil circuit switch; 22. a three-position four-way valve; 23. a bidirectional hydraulic cylinder; 24. a pressure gauge; 3. a bypass branch; 30. a pressure relief assembly; 31. an overflow valve; 32. a throttle valve; 33. a two-position two-way valve; 4. and an oil tank.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses hydraulic system of rectifying of roll squeezer.

Referring to fig. 1, the deviation rectifying hydraulic system of the roller press includes a hydraulic source 1, and in this embodiment, the hydraulic source 1 selects a hydraulic gear pump. The hydraulic source 1 is divided into two output oil paths 2 through a diverter valve 11, a pump station overflow valve 10 is further communicated between the hydraulic source 1 and the diverter valve 11, an oil inlet P of the pump station overflow valve 10 is communicated with the hydraulic source 1, and an oil outlet T of the pump station overflow valve 10 is communicated with an oil tank 4.

Referring to fig. 1, each output oil path 2 is provided with an oil path switch 21, a three-position four-way valve 22, and a two-way hydraulic cylinder 23 in this order. An oil inlet P of the three-position four-way valve 22 is communicated with the output oil path 2, an oil outlet T is communicated with the oil tank 4, and control oil ports A and B are communicated with the bidirectional hydraulic cylinder 23. The output oil path 2 is also provided with a pressure gauge 24, the pressure gauge 24 is arranged between the oil path switch 21 and the three-position four-way valve 22, and the pressure gauge 24 is used for monitoring the pressure of the liquid flowing into the three-position four-way valve 22 in real time. The three-position four-way valve 22 is electromagnetically driven and electrically connected to a pressure gauge 24.

Referring to fig. 1, a bypass branch 3 is communicated between a pressure gauge 24 and an oil path switch 21, a pressure relief assembly 30 is arranged in the bypass branch 3, and the pressure relief assembly 30 comprises an overflow valve 31, a throttle valve 32 and a two-position two-way valve 33. The bypass branch 3 is divided into two branches which are connected in parallel, one ends of the two branches, which are far away from the output oil path 2, are both communicated with the oil tank 4, the throttle valve 32 and the two-position two-way valve 33 are connected in series in one branch, and the overflow valve 31 is arranged in the other branch. The two-position two-way valve 33 is electromagnetically driven and electrically connected to the pressure gauge 24.

The implementation principle of the deviation-correcting hydraulic system of the roller press in the embodiment of the application is as follows: when the roller press operates, the oil circuit switch 21 is opened, the three-position four-way valve 22 is driven to the left position in fig. 1 at the same time, the two-way hydraulic cylinder 23 is pressurized, and when the pressure reaches a set value, the three-position four-way valve 22 is driven to the middle position. When the pressure is too high, the two-position two-way valve 33 is reversed, so that the oil inlet P of the two-position two-way valve 33 is communicated with the control oil port A to release the pressure, and the pressure of the released pressure can be controlled by adjusting the throttle valve 32.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a hydraulic system of rectifying of roll squeezer which characterized in that: including hydraulic pressure source (1), hydraulic pressure source (1) falls into two way output oil circuit (2), every way set gradually oil circuit switch (21), tribit cross valve (22) and two-way pneumatic cylinder (23) in output oil circuit (2), two-way pneumatic cylinder (23) are used for being connected with the compression roller of roll squeezer, the intercommunication has bypass branch (3) between oil circuit switch (21) and tribit cross valve (22), be provided with release subassembly (30) in bypass branch (3), the one end intercommunication that output oil circuit (2) were kept away from in release subassembly (30) has oil tank (4).

2. The hydraulic deviation correcting system for the roller press according to claim 1, wherein: the output oil way (2) is also provided with a pressure gauge (24), and the pressure gauge (24) is positioned between the connecting point of the bypass branch (3) and the output oil way (2) and the three-position four-way valve (22).

3. The hydraulic deviation correcting system for the roller press according to claim 2, wherein: the pressure relief assembly (30) comprises an overflow valve (31) and a throttle valve (32) which are connected in parallel.

4. The hydraulic deviation correcting system for the roller press according to claim 3, wherein: the throttling valve (32) is connected with a two-position two-way valve (33) in series, the throttling valve (32) and the two-position two-way valve (33) which are connected in series form a branch, and the branch is connected with the branch where the overflow valve (31) is located in parallel.

5. The hydraulic deviation correcting system for the roller press according to claim 4, wherein: the two-position two-way valve (33) is driven by electromagnetism, and the two-position two-way valve (33) is electrically connected with the pressure gauge (24).

6. The hydraulic deviation correcting system for the roller press according to claim 1, wherein: a pump station overflow valve (10) is communicated between the flow dividing valve (11) and the hydraulic source (1), and one end, far away from the output oil way (2), of the pump station overflow valve (10) is communicated with the oil tank (4).

7. The hydraulic deviation correcting system for the roller press according to claim 1, wherein: the hydraulic source (1) is divided into two paths of output oil paths (2) through a flow divider valve (11).

8. The hydraulic deviation correcting system for the roller press according to claim 1, wherein: the three-position four-way valve (22) is driven by electromagnetism and is electrically connected with the pressure gauge (24).