CN218151706U - Hydraulic system of flour mill - Google Patents
Hydraulic system of flour mill Download PDFInfo
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- CN218151706U CN218151706U CN202222721196.6U CN202222721196U CN218151706U CN 218151706 U CN218151706 U CN 218151706U CN 202222721196 U CN202222721196 U CN 202222721196U CN 218151706 U CN218151706 U CN 218151706U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The utility model relates to a hydraulic system field especially relates to a milling machine hydraulic system, and its structure is as follows: the oil tank is internally provided with a duplex oil pump, the duplex oil pump is connected with a motor, the duplex oil pump is communicated with an oil delivery pipeline, a proportional overflow valve is installed on the oil delivery pipeline, an oil outlet of the oil delivery pipeline is respectively communicated with an upper oil cylinder cavity and a lower oil cylinder cavity through each branch oil delivery pipeline, a speed regulating valve is arranged on each branch oil delivery pipeline communicated with a lower oil cylinder cavity, an energy accumulator is arranged on each branch oil delivery pipeline communicated with the upper oil cylinder cavity, all low-pressure branch oil delivery pipelines communicated with the lower oil cylinder cavities are converged and then communicated with the oil tank through a main oil delivery pipeline, and the main oil delivery pipeline is provided with a low-pressure energy accumulator and an oil supplementing one-way valve. The utility model discloses can realize the variable loading of milling machine, can realize stepless pressure regulating, buffering and lift the roller and fall the roller, reduce the mill vibrations for the granule that the milling machine goes out the powder is more even, the energy can be saved, the work efficiency of improvement milling machine.
Description
Technical Field
The utility model relates to a hydraulic system especially relates to a milling machine hydraulic system, can be applied to coal pulverizer, cement mill, powdered ore mill etc..
Background
The vertical milling equipment drives a grinding disc to rotate through a motor drive speed reducer, a grinding roller rotates on the grinding disc around the axis of the grinding roller, materials enter the middle of the grinding disc and the grinding roller through a feeding mechanism, the materials are extruded and crushed between the grinding disc and the grinding roller, and the grinding disc and the grinding roller grind the materials due to the shearing force generated by relative sliding.
Because the material particles entering the grinding roller and the grinding disc are different in size, different customers in different processes have different requirements on the fineness of the powder, and certain passive force needs to be added to the grinding roller. The hydraulic system of the flour mill applies certain pressure to the grinding roller through the control of the oil cylinder arranged between the grinding disc and the grinding roller, lifts up and falls down the grinding roller, and realizes the control of powder fineness through adjusting the pressure. Meanwhile, the lifting and bin cleaning actions of the grinding roller can be realized through reversing.
The general mill system in the market at present adopts a common reversing valve reversing pressure maintaining mode to carry out compression roller and table roller work, and the mode has larger vibration impact on equipment.
Disclosure of Invention
The utility model aims to solve the technical problem that a milling machine hydraulic system is provided, it can realize the change loading of milling machine, has adopted the proportional control scheme in the system, can realize stepless pressure regulating, buffering lift the roller and fall the roller, reduces the mill vibrations for the milling machine goes out the granule of powder more even, the energy can be saved, improve the work efficiency of milling machine.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the hydraulic system of the pulverizer comprises an oil tank and an oil filling port, wherein a duplex oil pump is arranged in the oil tank and is connected with a motor through a shaft, the duplex oil pump is communicated with an oil inlet of a high-pressure oil conveying pipeline and an oil inlet of a low-pressure oil conveying pipeline, a low-pressure proportional overflow valve is arranged on the low-pressure oil conveying pipeline, overflow ports of the low-pressure proportional overflow valve and the high-pressure proportional overflow valve are communicated with the oil tank through pipelines, an oil outlet of the high-pressure oil conveying pipeline is communicated with respective upper oil cylinder cavities through high-pressure branch oil conveying pipelines, an oil outlet of the low-pressure oil conveying pipeline is communicated with respective lower oil cylinder cavities through low-pressure branch oil conveying pipelines, a speed regulating valve is arranged on each low-pressure branch oil conveying pipeline, an energy accumulator is arranged on each high-pressure branch oil conveying pipeline, the low-pressure branch oil conveying pipeline communicated with the lower oil cylinder cavities is communicated with the oil tank through a main oil conveying pipeline after being converged, and a low-pressure energy accumulator and an oil-supplementing one-way valve are arranged on the main oil conveying pipeline.
The oil cylinders are three, the oil outlets of the high-pressure oil conveying pipelines are communicated with the upper cavities of the first oil cylinder, the second oil cylinder and the third oil cylinder through the high-pressure branch oil conveying pipelines, the oil outlets of the low-pressure oil conveying pipelines are communicated with the lower cavities of the first oil cylinder, the second oil cylinder and the third oil cylinder through the low-pressure branch oil conveying pipelines, a first speed regulating valve is arranged on the low-pressure branch oil conveying pipeline communicated with the first oil cylinder, a second speed regulating valve is arranged on the low-pressure branch oil conveying pipeline communicated with the second oil cylinder, a third speed regulating valve is arranged on the low-pressure branch oil conveying pipeline communicated with the third oil cylinder, a first energy accumulator is arranged on the high-pressure branch oil conveying pipeline communicated with the first oil cylinder, a second energy accumulator is arranged on the high-pressure branch oil conveying pipeline communicated with the second oil cylinder, and a third energy accumulator is arranged on the high-pressure branch oil conveying pipeline communicated with the third oil cylinder.
The oil tank is provided with a visual liquid level meter.
And the low-pressure oil conveying pipeline is provided with a low-pressure one-way valve.
The high-pressure oil conveying pipeline is provided with a high-pressure one-way valve.
A low-pressure measuring connector is installed on the low-pressure oil conveying pipeline, and a low-pressure gauge is installed on the low-pressure measuring connector.
A high-pressure measuring joint is arranged on the high-pressure oil conveying pipeline, and a high-pressure gauge is mounted on the high-pressure measuring joint.
Due to the adoption of the technical scheme, make the utility model has the characteristics of as follows and effect:
the utility model discloses can realize the variable loading of milling machine, the loading power sets up with the feeding volume of milling machine, has adopted the proportional control scheme in the system, can realize stepless pressure regulating, buffering and lift the roller and the roller that falls, reduces the mill vibrations for the granule that the milling machine goes out the powder is more even, the energy can be saved, the work efficiency of improvement milling machine, has guaranteed the performance of product.
Drawings
Fig. 1 is a hydraulic schematic diagram of the present invention.
In the figure, 1, an oil tank, 2, a visual liquid level meter, 3, an oil filling port, 4, a motor, 5, a dual oil pump, 6, a high-pressure check valve, 7, a low-pressure check valve, 8, a low-pressure proportional overflow valve, 9, a high-pressure proportional overflow valve, 10, a low-pressure accumulator, 11, an oil supplementing check valve, 12, a low-pressure measuring joint, 13, a low-pressure gauge, 14, a high-pressure measuring joint, 15, a high-pressure gauge, 1601, a first oil cylinder, 1602, a second oil cylinder, 1603, a third oil cylinder, 1701, a first speed regulating valve, 1702, a second speed regulating valve, 1703, a third speed regulating valve, 1801, a first energy accumulator, 1802, a second energy accumulator, 1803 and a third energy accumulator.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
As shown in fig. 1, the utility model discloses milling machine hydraulic system, its structure is as follows: an oil filling port 3 is arranged on an oil tank 1, a visual liquid level meter 2 is arranged on the oil tank 1, a duplex oil pump 5 is arranged in the oil tank 1, the duplex oil pump 5 is connected with a motor 4 through a shaft, the duplex oil pump 5 is communicated with a high-pressure oil pipeline oil inlet and a low-pressure oil pipeline oil inlet, a low-pressure check valve 7, a low-pressure proportional overflow valve 8 and a low-pressure measuring joint 12 are arranged on the low-pressure oil pipeline, a low-pressure gauge 13 is arranged on the low-pressure measuring joint 12, a high-pressure check valve 6, a high-pressure proportional overflow valve 9 and a high-pressure measuring joint 14 are arranged on the high-pressure oil pipeline, a high-pressure gauge 15 is arranged on the high-pressure measuring joint 14, overflow ports of the low-pressure proportional overflow valve 8 and the high-pressure proportional overflow valve 9 are communicated with the oil tank through pipelines, an oil outlet of the high-pressure oil pipeline is communicated with upper chambers of a first oil cylinder 1601, a second oil cylinder 1602 and a third oil cylinder 1603 through high-pressure branch oil pipelines, the oil outlet of the low-pressure oil delivery pipeline is communicated with the lower cavities of a first oil cylinder 1601, a second oil cylinder 1602 and a third oil cylinder 1603 through each low-pressure branch oil delivery pipeline, a first speed regulating valve 1701 is arranged on the low-pressure branch oil delivery pipeline communicated with the first oil cylinder 1601, a second speed regulating valve 1702 is arranged on the low-pressure branch oil delivery pipeline communicated with the second oil cylinder 1602, a third speed regulating valve 1703 is arranged on the low-pressure branch oil delivery pipeline communicated with the third oil cylinder 1603, a first energy accumulator 1801 is arranged on the high-pressure branch oil delivery pipeline communicated with the first oil cylinder 1601, a second energy accumulator 1802 is arranged on the high-pressure branch oil delivery pipeline communicated with the second oil cylinder 1602, a third energy accumulator 1803 is arranged on the high-pressure branch oil delivery pipeline communicated with the third oil cylinder 1603, and the three low-pressure branch oil delivery pipelines communicated with the lower cavities of the first oil cylinder 1601, the second oil cylinder 1602 and the third oil cylinder 1603 are merged and then communicated with the oil tank through a main oil delivery pipeline, the total oil pipeline is provided with a low-pressure accumulator 10 and an oil-supplementing one-way valve 11.
The utility model discloses a working process and theory of operation as follows:
the motor 4 drives the duplex hydraulic pump 5, hydraulic oil is respectively injected into the high-pressure oil conveying pipeline and the low-pressure oil conveying pipeline, the proportional overflow valves 8 and 9 adjust pump pressure, the pressure gauges 13 and 15 are connected to the pressure gauge switches 12 and 14 to display the pump pressure, and the duplex hydraulic pump 5 is mainly used for supplying oil to the three oil cylinders 16; when three oil cylinders move upwards: the action of the proportional overflow valve 8 is increased in pressure, and the action of the proportional overflow valve 9 is reduced in pressure. When the oil cylinder moves downwards: the proportional overflow valve 9 acts to increase the pressure, the proportional overflow valve 8 reduces the pressure, and the energy accumulator 18 plays a role in buffering and oil supplementing when descending; the accumulator 10 plays a role of buffering and oil supplement when going upward.
Claims (7)
1. The hydraulic system of the flour mill comprises an oil tank (1) and an oil filling port (3), and is characterized in that a duplex oil pump (5) is arranged in the oil tank (1), the duplex oil pump (5) is connected with a motor (4) through a shaft, the duplex oil pump (5) is communicated with an oil inlet of a high-pressure oil delivery pipeline and an oil inlet of a low-pressure oil delivery pipeline, a low-pressure proportional overflow valve (8) is arranged on the low-pressure oil delivery pipeline, a high-pressure proportional overflow valve (9) is arranged on the high-pressure oil delivery pipeline, overflow ports of the low-pressure proportional overflow valve (8) and the high-pressure proportional overflow valve (9) are communicated with the oil tank through pipelines, oil outlets of the high-pressure oil delivery pipeline are communicated with respective upper oil cylinder cavities through respective high-pressure branch oil delivery pipelines, oil outlets of the low-pressure oil delivery pipeline are communicated with respective lower oil cylinder cavities through respective low-pressure branch oil delivery pipelines, a speed regulating valve is arranged on each low-pressure branch oil delivery pipeline, an energy accumulator is arranged on each high-pressure branch oil delivery pipeline, the low-pressure oil delivery pipeline is communicated with the oil delivery pipeline and the oil tank through a main oil storage device (10) and an oil supplementing one-way valve (11).
2. The hydraulic system of the flour mill according to claim 1, characterized in that the number of the oil cylinders is three, the oil outlet of the high-pressure oil delivery pipeline is communicated with the upper cavities of the first oil cylinder (1601), the second oil cylinder (1602) and the third oil cylinder (1603) through each high-pressure branch oil delivery pipeline, the oil outlet of the low-pressure oil delivery pipeline is communicated with the lower cavities of the first oil cylinder (1601), the second oil cylinder (1602) and the third oil cylinder (1603) through each low-pressure branch oil delivery pipeline, the low-pressure branch oil delivery pipeline communicated with the first oil cylinder (1601) is provided with a first speed regulating valve (1701), the low-pressure branch oil delivery pipeline communicated with the second oil cylinder (1602) is provided with a second speed regulating valve (1702), the low-pressure branch oil delivery pipeline communicated with the third oil cylinder (1603) is provided with a third speed regulating valve (1703), the high-pressure branch oil delivery pipeline communicated with the first oil cylinder (1601) is provided with a first energy accumulator (1801), the high-pressure branch oil delivery pipeline communicated with the second oil cylinder (1603) is provided with a second energy accumulator (1802), and the high-pressure branch oil delivery pipeline communicated with the third oil cylinder (1603) is provided with a third energy accumulator (1803).
3. Hydraulic system for mills according to claim 1 characterized in that a visual level gauge (2) is mounted on the oil tank (1).
4. Hydraulic system for mills according to claim 1, characterized in that the low pressure oil line is equipped with a low pressure check valve (7).
5. Hydraulic system for mills according to claim 1, characterized in that the high pressure oil line is provided with a high pressure check valve (6).
6. Hydraulic system for mills according to claim 1 characterized in that the low pressure oil line is equipped with a low pressure tap (12) and the low pressure gauge (13) is equipped with a low pressure tap (12).
7. Hydraulic system for mills according to claim 1 characterized in that the high pressure oil line is provided with a high pressure tap (14), the high pressure tap (14) being provided with a high pressure gauge (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222721196.6U CN218151706U (en) | 2022-10-17 | 2022-10-17 | Hydraulic system of flour mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222721196.6U CN218151706U (en) | 2022-10-17 | 2022-10-17 | Hydraulic system of flour mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218151706U true CN218151706U (en) | 2022-12-27 |
Family
ID=84570984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222721196.6U Active CN218151706U (en) | 2022-10-17 | 2022-10-17 | Hydraulic system of flour mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218151706U (en) |
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2022
- 2022-10-17 CN CN202222721196.6U patent/CN218151706U/en active Active
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