CN109026864B - Novel hydraulic device for controlling catch wheel - Google Patents
Novel hydraulic device for controlling catch wheel Download PDFInfo
- Publication number
- CN109026864B CN109026864B CN201811100627.9A CN201811100627A CN109026864B CN 109026864 B CN109026864 B CN 109026864B CN 201811100627 A CN201811100627 A CN 201811100627A CN 109026864 B CN109026864 B CN 109026864B
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- Prior art keywords
- hydraulic
- valve
- electromagnetic directional
- oil
- directional valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention relates to a novel hydraulic device for controlling a catch wheel, which comprises a hydraulic pump, an electromagnetic directional valve I, a speed regulating valve, a hydraulic control one-way valve, a hydraulic cylinder, an energy accumulator, an electromagnetic directional valve II, an electromagnetic directional valve III, an oil tank and a travel switch. Starting a hydraulic pump, powering off the electromagnetic directional valve I, powering off the electromagnetic directional valve II, powering on the electromagnetic directional valve II, and opening the hydraulic control one-way valve by the accumulator, wherein the hydraulic oil flows through the electromagnetic directional valve I, the speed regulating valve, the hydraulic one-way valve and the rodless cavity of the hydraulic cylinder to push the hydraulic catch wheel to move the rotary kiln upwards; the hydraulic cylinder extrudes hydraulic oil in the rodless cavity to flow through the hydraulic control one-way valve, the speed regulating valve and the electromagnetic directional valve I under the action of the gravity of the rotary kiln, the oil return tank or the hydraulic pump is filled into the cavity of the piston rod, the travel switch is started after the hydraulic oil is leaked downwards in place, the electromagnetic directional valve II is powered off, the hydraulic pump is started again, and the next cycle is started. The ideal speed of the rotary kiln moving for 5-10 minutes by one millimeter can be realized, and the energy and the cost are saved.
Description
Technical Field
The invention relates to a hydraulic control device in the technical field of rotary kilns, in particular to a novel hydraulic device for controlling a catch wheel.
Background
The active lime rotary kiln is used for roasting active lime or light burned dolomite used in the steel industry. The kiln body of the rotary kiln is nested with a wheel belt, the wheel belt is supported on a pair of riding wheels arranged on a foundation, and the kiln body freely rotates on the riding wheels through the wheel belt. The width of the riding wheel is larger than that of the wheel belt, so that the wheel belt and the riding wheel can be in full contact along the width direction, and the hydraulic system is arranged to control the hydraulic retaining wheel to enable the kiln body and the wheel belt to vertically move along the riding wheel, so that full-width contact is realized. The slower the rotary kiln moves, the less abrasion is caused to the riding wheels and the wheel belts. The ideal speed for pushing the rotary kiln to move is 5-10 minutes and one millimeter, so that the slow moving speed brings higher requirements to the hydraulic system, the flow of hydraulic oil in a pipeline of the hydraulic system is required to be small, and the flow and leakage of components of the hydraulic system are required to be small enough. At present, the existing gear hydraulic system is a hydraulic system commonly used for metallurgical machinery, and has the following defects:
1) The hydraulic elements such as a hydraulic pump, an electromagnetic reversing valve, a speed regulating valve and the like are common hydraulic elements of metallurgical machinery, and although the hydraulic system pushes a hydraulic cylinder piston rod to extend and retract, upward movement and downward movement of the rotary kiln body can be realized, the indexes such as the flow rate, the leakage amount and the like of the hydraulic system elements are larger, the speed regulating valve regulates the speed singly and the like to cause the moving speed of the rotary kiln body to be too high, the movement speed is 0.5-1 minute and one millimeter, and the difference between the moving speed and the ideal speed of the rotary kiln movement is very large;
2) Because the rotary kiln moves too fast, the abrasion of the riding wheel and the wheel belt is accelerated, the maintenance time and the maintenance cost are increased, and the normal production of the rotary kiln is influenced;
3) The energy accumulator has single function and is only an energy storage element;
4) The downward movement of the rotary kiln is realized by the power of a hydraulic system, the hydraulic system is complex, and the energy consumption is high.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problem solved by the invention is to provide a novel hydraulic device for controlling the retaining wheel, which reduces the use quantity of hydraulic valves, simplifies a hydraulic system, saves energy consumption, can solve the problem of too fast movement of a rotary kiln, realizes the ideal movement speed of the rotary kiln for 5-10 minutes by one millimeter, reduces the wear speed of a riding wheel and a wheel belt, saves the time and cost for equipment maintenance and overhaul, and improves the labor productivity.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the novel hydraulic device for controlling the catch wheel comprises a hydraulic pump, an electromagnetic directional valve I, a speed regulating valve, a hydraulic control one-way valve, a hydraulic cylinder, an energy accumulator, an electromagnetic directional valve II, an electromagnetic directional valve III, an oil tank and a travel switch, and is characterized in that the hydraulic pump is arranged on the oil tank and is sequentially connected with the electromagnetic directional valve I, the speed regulating valve, the hydraulic control one-way valve and an oil-free cavity of the hydraulic cylinder to form an oil inlet loop; the other oil port of the electromagnetic directional valve I is connected with a piston rod cavity of the hydraulic cylinder and an oil tank to form a part of an oil return way; the electromagnetic reversing valve III is connected with the speed regulating valve in parallel, so that the kiln body of the rotary kiln can rapidly move under special conditions; an oil port of the electromagnetic reversing valve II is connected with a hydraulic control oil way of the hydraulic control one-way valve, an oil port of the electromagnetic reversing valve II is connected with an oil inlet loop, and an oil port of the electromagnetic reversing valve II is connected with an oil return loop; the energy accumulator is connected to the tail end of the oil inlet loop, and a normally closed stop valve is arranged and connected with the oil return loop; a piston rod of the hydraulic cylinder is connected with the hydraulic catch wheel; the travel switch is arranged at the limit position of upward movement and downward movement of the rotary kiln and is electrically interlocked with the hydraulic pump, the electromagnetic directional valve I, the electromagnetic directional valve II and the electromagnetic directional valve III.
The hydraulic pump is a metering plunger pump, and the maximum flow is 4 liters/hour.
The electromagnetic directional valve I, the electromagnetic directional valve II and the electromagnetic directional valve III are all electromagnetic directional ball valves.
The speed regulating valve is provided with a rectifying plate, the speed is regulated bidirectionally, and the maximum working flow is 1 liter/hour.
The energy accumulator is used as an energy storage element and a switch, and when the rotary kiln is in downward movement, the hydraulic control one-way valve is opened, so that hydraulic oil can reversely flow.
The working principle is as follows:
1) And (3) controlling the upward movement of the rotary kiln body: starting a hydraulic pump, powering on an electromagnetic directional valve I, enabling hydraulic oil to flow out of the hydraulic pump, enabling the hydraulic oil to flow through the electromagnetic directional valve I, a speed regulating valve, a hydraulic one-way valve and enter a rodless cavity of a hydraulic cylinder, pushing a piston rod of the hydraulic cylinder to extend out, pushing a hydraulic baffle wheel to enable a kiln body of the rotary kiln to move upwards in place, enabling a travel switch to send an instruction, closing the hydraulic pump, powering off the electromagnetic directional valve I, powering on an electromagnetic directional valve II, enabling the kiln body of the rotary kiln to move upwards, and enabling an energy accumulator to open a hydraulic one-way valve to enable the hydraulic oil to flow reversely;
2) Controlling the downward movement of the rotary kiln body: the piston rod of the hydraulic cylinder is driven by the automatic downward-shifting rotary kiln to retract, hydraulic oil in a rodless cavity of the hydraulic cylinder is extruded and flows through an opened hydraulic control one-way valve, a speed regulating valve and an electromagnetic reversing valve I, and returns to an oil tank or is filled into the piston rod cavity of the hydraulic cylinder, after downward shifting is in place, a travel switch sends out a command, an electromagnetic reversing valve II is powered off, a hydraulic pump is started again, and the downward shifting process of the kiln body of the rotary kiln is finished, namely a shifting cycle is finished;
3) And (3) when the hydraulic pump is started again, the electromagnetic directional valve I is powered on, and the steps 1) and 2) are repeated to start the next movement cycle of the rotary kiln body.
Compared with the prior art, the invention has the beneficial effects that:
1) The hydraulic components are different: the metering plunger pump is used for replacing a conventional vane pump or plunger pump, the ball valve type reversing valve is used for replacing a conventional slide valve type reversing valve, and the hydraulic pump and the electromagnetic reversing valve are small in flow and low in leakage and are easy to control; the speed regulating valve provided with the rectifying plate is used for replacing a conventional one-way speed regulating valve, so that two-way speed regulation can be realized;
2) The hydraulic system is simplified, the energy consumption is saved, the problem of too fast movement of the rotary kiln can be solved, and the ideal movement speed of the rotary kiln of 5-10 minutes and one millimeter can be realized;
3) The energy accumulator is used as an energy storage element and a switch, and when the rotary kiln is in downward movement, the hydraulic control one-way valve is opened, so that hydraulic oil can reversely flow;
4) The kiln body downward movement modes of the rotary kiln are different: the self-running of the rotary kiln body is realized by the downward running force generated by the dead weight of the rotary kiln body, a hydraulic pump is not required to be started, the hydraulic system is simple, and the energy consumption is low;
5) The ideal speed of the rotary kiln running of 5-10 minutes by one millimeter is realized, the wear speed of the riding wheels and the wheel belts is reduced, the time and the cost of equipment maintenance and overhaul are saved, and the labor productivity is improved.
Drawings
Fig. 1 is a schematic view of the structural principle of the present invention.
In the figure: 1-hydraulic pump 2-electromagnetic directional valve I3-speed regulating valve 4-hydraulic control one-way valve 5-hydraulic cylinder 6-energy accumulator 7-hydraulic baffle wheel 8-rotary kiln 9-electromagnetic directional valve II 10-electromagnetic directional valve III 11-oil tank 12-stop valve 13-hydraulic control oil way
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 1, the novel hydraulic device for controlling the catch wheel comprises a hydraulic pump 1, an electromagnetic directional valve i 2, a speed regulating valve 3, a hydraulic control one-way valve 4, a hydraulic cylinder 5, an energy accumulator 6, an electromagnetic directional valve ii 9, an electromagnetic directional valve iii 10, an oil tank 11 and a travel switch (not shown in the drawing), wherein the hydraulic pump 1 is arranged on the oil tank 11, and the hydraulic pump 1 is sequentially connected with the electromagnetic directional valve i 2, the speed regulating valve 3, the hydraulic control one-way valve 4 and an oil-free cavity of the hydraulic cylinder 5 to form an oil inlet loop (the direction shown by the hollow arrow in fig. 1), namely, the flow direction of hydraulic oil when a kiln body of a rotary kiln 8 moves upwards is controlled; the other oil port of the electromagnetic directional valve I2 is connected with a piston rod cavity of the hydraulic cylinder 5 and an oil tank 11 to form a part of an oil return path (the direction shown by a solid arrow in FIG. 1); the electromagnetic reversing valve III 10 is connected with the speed regulating valve 3 in parallel, so that the quick movement of the kiln body of the rotary kiln 8 can be realized under special conditions; an oil port of the electromagnetic directional valve II 9 is connected with a hydraulic control oil way 13 of the hydraulic control one-way valve 4, an oil port of the electromagnetic directional valve II is connected with an oil inlet loop, and an oil port of the electromagnetic directional valve II is connected with an oil return loop; the accumulator 6 is connected to the tail end of the oil inlet loop, and a normally closed stop valve 12 is arranged and connected with the oil return loop; a piston rod of the hydraulic cylinder 5 is connected with a hydraulic catch wheel 7; the travel switch is arranged at the limit position of upward movement and downward movement of the rotary kiln 8 and is electrically interlocked with the hydraulic pump 1, the electromagnetic directional valve I2, the electromagnetic directional valve II 9 and the electromagnetic directional valve III 10.
The hydraulic pump 1 is a metering plunger pump, and the maximum flow is 4 liters/hour.
The electromagnetic directional valve I2, the electromagnetic directional valve II 9 and the electromagnetic directional valve III 10 are all electromagnetic directional ball valves.
The speed regulating valve 3 is provided with a rectifying plate for regulating speed bidirectionally, and the maximum working flow is 1 liter/hour.
The energy accumulator 6 is used as an energy storage element and a switch, and when the rotary kiln 8 is in downward movement, the hydraulic control one-way valve 4 is opened, so that hydraulic oil can reversely flow.
The working principle is as follows:
1) The kiln body of the rotary kiln 8 moves upwards to control (oil inlet loop, namely, the direction indicated by hollow arrow in fig. 1): starting the hydraulic pump 1, powering on the electromagnetic directional valve I2, enabling hydraulic oil to flow out of the hydraulic pump 1, flowing through the electromagnetic directional valve I2, the speed regulating valve 3, the hydraulic one-way valve 4 and a rodless cavity of the hydraulic cylinder 5, pushing a piston rod of the hydraulic cylinder 5 to extend, pushing the hydraulic baffle wheel 7 to enable the kiln body of the rotary kiln 8 to move upwards, after the rotary kiln 8 moves upwards in place, giving out an instruction by the travel switch, closing the hydraulic pump 1, powering off the electromagnetic directional valve I2, powering on the electromagnetic directional valve II 9, ending the upward moving process of the kiln body of the rotary kiln 8, and simultaneously opening the hydraulic one-way valve 4 by the energy accumulator 6 to enable the hydraulic oil to reversely flow;
2) Control of kiln body downward movement (oil return loop, i.e. direction indicated by solid arrow in fig. 1): the piston rod of the hydraulic cylinder 5 is driven by the automatic downward-shifting rotary kiln 8 to retract, hydraulic oil in a rodless cavity of the hydraulic cylinder 5 is extruded, flows through the opened hydraulic control one-way valve 4, the speed regulating valve 3 and the electromagnetic reversing valve I2, returns to the oil tank 11 or is filled into the piston rod cavity of the hydraulic cylinder 5 (supplements the downward-shifting power of the kiln body of the rotary kiln), after downward shifting is in place, the travel switch sends out an instruction, the electromagnetic reversing valve II 9 is powered off, the hydraulic pump 1 is started again, the downward shifting process of the kiln body of the rotary kiln 8 is finished, namely, a shifting cycle is finished;
3) The hydraulic pump 1 is started again, the electromagnetic directional valve I2 is powered on, and the steps 1) and 2) are repeated to start the next movement cycle of the kiln body of the rotary kiln 8.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The novel hydraulic device for controlling the catch wheel comprises a hydraulic pump, an electromagnetic directional valve I, a speed regulating valve, a hydraulic control one-way valve, a hydraulic cylinder, an energy accumulator, an electromagnetic directional valve II, an electromagnetic directional valve III, an oil tank and a travel switch, and is characterized in that the hydraulic pump is arranged on the oil tank and is sequentially connected with the electromagnetic directional valve I, the speed regulating valve, the hydraulic control one-way valve and an oil-free cavity of the hydraulic cylinder to form an oil inlet loop; the other oil port of the electromagnetic directional valve I is connected with a piston rod cavity of the hydraulic cylinder and an oil tank to form an oil return oil path; the electromagnetic reversing valve III is connected with the speed regulating valve in parallel; an oil port of the electromagnetic reversing valve II is connected with a hydraulic control oil way of the hydraulic control one-way valve, an oil port of the electromagnetic reversing valve II is connected with an oil inlet loop, and an oil port of the electromagnetic reversing valve II is connected with an oil return loop; the energy accumulator is connected to the tail end of the oil inlet loop, and a normally closed stop valve is arranged and connected with the oil return loop; a piston rod of the hydraulic cylinder is connected with the hydraulic catch wheel; the travel switch is arranged at the limit position of upward movement and downward movement of the rotary kiln and is electrically interlocked with the hydraulic pump, the electromagnetic directional valve I, the electromagnetic directional valve II and the electromagnetic directional valve III; the hydraulic pump is a metering plunger pump, and the maximum flow is 4 liters/hour;
the electromagnetic directional valve I, the electromagnetic directional valve II and the electromagnetic directional valve III are electromagnetic directional ball valves;
the speed regulating valve is provided with a rectifying plate, the speed is regulated bidirectionally, and the maximum working flow is 1 liter/hour.
2. The novel hydraulic device for controlling the catch wheel according to claim 1, wherein the accumulator can open the hydraulic control one-way valve when the rotary kiln is in a downward movement, so that hydraulic oil can flow reversely.
3. The novel hydraulic device for controlling the gear wheel according to claim 1, wherein the working principle is as follows:
1) And (3) controlling the upward movement of the rotary kiln body: starting a hydraulic pump, powering on an electromagnetic directional valve I, enabling hydraulic oil to flow out of the hydraulic pump, enabling the hydraulic oil to flow through the electromagnetic directional valve I, a speed regulating valve, a hydraulic one-way valve and enter a rodless cavity of a hydraulic cylinder, pushing a piston rod of the hydraulic cylinder to extend out, pushing a hydraulic baffle wheel to enable a kiln body of the rotary kiln to move upwards in place, enabling a travel switch to send an instruction, closing the hydraulic pump, powering off the electromagnetic directional valve I, powering on an electromagnetic directional valve II, enabling the kiln body of the rotary kiln to move upwards, and enabling an energy accumulator to open a hydraulic one-way valve to enable the hydraulic oil to flow reversely;
2) Controlling the downward movement of the rotary kiln body: the piston rod of the hydraulic cylinder is driven by the automatic downward-shifting rotary kiln to retract, hydraulic oil in a rodless cavity of the hydraulic cylinder is extruded and flows through an opened hydraulic control one-way valve, a speed regulating valve and an electromagnetic reversing valve I, and returns to an oil tank or is filled into the piston rod cavity of the hydraulic cylinder, after downward shifting is in place, a travel switch sends out a command, an electromagnetic reversing valve II is powered off, a hydraulic pump is started again, and the downward shifting process of the kiln body of the rotary kiln is finished, namely a shifting cycle is finished;
3) And (3) when the hydraulic pump is started again, the electromagnetic directional valve I is powered on, and the steps 1) and 2) are repeated to start the next movement cycle of the rotary kiln body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100627.9A CN109026864B (en) | 2018-09-20 | 2018-09-20 | Novel hydraulic device for controlling catch wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100627.9A CN109026864B (en) | 2018-09-20 | 2018-09-20 | Novel hydraulic device for controlling catch wheel |
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| Publication Number | Publication Date |
|---|---|
| CN109026864A CN109026864A (en) | 2018-12-18 |
| CN109026864B true CN109026864B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811100627.9A Active CN109026864B (en) | 2018-09-20 | 2018-09-20 | Novel hydraulic device for controlling catch wheel |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854557B (en) * | 2019-03-21 | 2020-03-27 | 福建工程学院 | Double-pump direct-drive electro-hydrostatic actuator with energy-saving pressure pre-tightening unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202900814U (en) * | 2012-11-13 | 2013-04-24 | 淮北重科矿山机器有限公司 | Mud scraping harrow hydraulic lifting device provided with manual operating device |
| CN203394905U (en) * | 2013-06-28 | 2014-01-15 | 新兴能源装备股份有限公司 | Variable-frequency speed regulation hydraulic control system for thrust roller of rotary kiln |
| CN203489653U (en) * | 2013-08-01 | 2014-03-19 | 新兴能源装备股份有限公司 | Numerical control hydraulic block wheel device for rotary kiln |
| CN104728189A (en) * | 2013-12-20 | 2015-06-24 | 熊英 | Control oil way of hydraulic push stop wheel |
| CN208982383U (en) * | 2018-09-20 | 2019-06-14 | 中冶焦耐(大连)工程技术有限公司 | Hydraulic device is used in a kind of control of novel catch wheel |
-
2018
- 2018-09-20 CN CN201811100627.9A patent/CN109026864B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202900814U (en) * | 2012-11-13 | 2013-04-24 | 淮北重科矿山机器有限公司 | Mud scraping harrow hydraulic lifting device provided with manual operating device |
| CN203394905U (en) * | 2013-06-28 | 2014-01-15 | 新兴能源装备股份有限公司 | Variable-frequency speed regulation hydraulic control system for thrust roller of rotary kiln |
| CN203489653U (en) * | 2013-08-01 | 2014-03-19 | 新兴能源装备股份有限公司 | Numerical control hydraulic block wheel device for rotary kiln |
| CN104728189A (en) * | 2013-12-20 | 2015-06-24 | 熊英 | Control oil way of hydraulic push stop wheel |
| CN208982383U (en) * | 2018-09-20 | 2019-06-14 | 中冶焦耐(大连)工程技术有限公司 | Hydraulic device is used in a kind of control of novel catch wheel |
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| Publication number | Publication date |
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| CN109026864A (en) | 2018-12-18 |
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