CN107143687B - Hydraulic valve in-place signal feedback device of coal mill - Google Patents
Hydraulic valve in-place signal feedback device of coal mill Download PDFInfo
- Publication number
- CN107143687B CN107143687B CN201710506826.9A CN201710506826A CN107143687B CN 107143687 B CN107143687 B CN 107143687B CN 201710506826 A CN201710506826 A CN 201710506826A CN 107143687 B CN107143687 B CN 107143687B
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- China
- Prior art keywords
- fixedly connected
- protective sleeve
- wire drawing
- door
- sliding block
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/46—Mechanical actuating means for remote operation
- F16K31/465—Mechanical actuating means for remote operation by flexible transmission means, e.g. cable, chain, bowden wire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Chutes (AREA)
Abstract
The invention relates to an in-place signal feedback device of a hydraulic valve of a coal mill, which comprises a feedback mechanism positioned outside the coal mill, wherein a wire drawing is connected between a hydraulic cylinder and the feedback mechanism, and a protective sleeve is sleeved outside the wire drawing; the feedback mechanism comprises a base, a return spring, a proximity switch, a door-shaped bracket and a sliding block which is connected to the door-shaped bracket in a sliding way; one end of the reset spring is fixedly connected with the sliding block, and the other end of the reset spring is fixedly connected with the top plate of the door-shaped bracket; one side of the door-shaped bracket is provided with a mounting plate, and the number of the proximity switches is two; one side of the hydraulic cylinder is fixedly connected with the fixing frame, one end of the protective sleeve is fixedly connected with the fixing frame, the wire drawing inside the end of the protective sleeve fixedly connected with the fixing frame is fixedly connected with the piston rod of the hydraulic cylinder, the other end of the protective sleeve is fixedly connected with the base, and the wire drawing inside the end of the protective sleeve fixedly connected with the base is fixedly connected with the sliding block. Compared with the prior art, the device has the characteristics of simple structure and good use effect.
Description
Technical Field
The invention relates to the technical field of auxiliary equipment of coal mills, in particular to a hydraulic valve in-place signal feedback device of a coal mill.
Background
The coal mill often has the problems of hot air leakage, ash leakage and the like during operation, and has great influence on the operation of other auxiliary equipment.
The in-place signal switch of the hydraulic valve of the coal mill, namely the original design of the proximity switch, is arranged on a piston rod of a hydraulic cylinder at the lower part of the coal mill, and the following technical problems exist in the use process due to the problems of hot air leakage, ash leakage and the like during the operation of the coal mill: (1) the in-place signal is easy to be misaligned due to dust accumulation; (2) the proximity switch and the signal cable are easy to damage after hot air leakage; (3) the maintenance space is narrow, and once the proximity switch fails, the proximity switch is very inconvenient to process. After the feedback signal goes wrong, the normal start and stop of the coal mill are affected, and the safe and stable operation of the unit can be affected when serious.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the hydraulic valve in-place signal feedback device of the coal mill, which removes the proximity switch on the piston rod of the original hydraulic cylinder, and leads the in-place signal to the outside of the coal mill in a pure physical mode, thereby not only avoiding all the problems, but also ensuring the accurate measurement of the in-place signal.
The invention is realized by the following technical scheme, and provides a hydraulic valve in-place signal feedback device of a coal mill, which comprises a hydraulic cylinder arranged at the lower part of the coal mill and a feedback mechanism positioned outside the coal mill, wherein a wire drawing is connected between the hydraulic cylinder and the feedback mechanism, a protective sleeve is sleeved outside the wire drawing, and the wire drawing can draw back and forth in the protective sleeve; the feedback mechanism comprises a base, a return spring, a proximity switch, a door-shaped bracket and a sliding block which is connected to the door-shaped bracket in a sliding manner, and the door-shaped bracket is fixedly connected to the base; one end of the reset spring is fixedly connected with the sliding block, and the other end of the reset spring is fixedly connected with the top plate of the door-shaped bracket; one side of the door-shaped bracket is provided with a mounting plate, the mounting plate is fixedly connected to the base, the number of the two proximity switches is two, the two proximity switches are arranged on the mounting plate, and the two proximity switches are respectively positioned on the upper side and the lower side of the sliding block; one side of the hydraulic cylinder is fixedly connected with the fixing frame, one end of the protective sleeve is fixedly connected with the fixing frame, the wire drawing inside the end of the protective sleeve fixedly connected with the fixing frame is fixedly connected with the piston rod of the hydraulic cylinder, the other end of the protective sleeve is fixedly connected with the base, and the wire drawing inside the end of the protective sleeve fixedly connected with the base is fixedly connected with the sliding block.
The hydraulic valve performs corresponding actions by providing power through the hydraulic cylinder, the sliding block is pulled to move downwards by the action of the hydraulic valve through the wire drawing, the reset spring is in a tensioning state at the moment, the hydraulic valve acts again, the wire drawing is released, the reset spring contracts, and the sliding block is pulled back to the original position by means of the elasticity of the reset spring. The position of the sliding block is detected through two proximity switches arranged up and down in the process of moving the sliding block up and down, so that the position of the hydraulic valve is measured.
Preferably, the sliding block is connected with the door-shaped support in a sliding manner, wherein sliding grooves are formed in the inner sides of the left upright post and the right upright post of the door-shaped support, the sliding grooves are located along the direction of the long axis of the upright post, the left end and the right end of the sliding block are located in the two sliding grooves respectively, and the sliding block can move up and down along the sliding grooves.
Preferably, the setting mode of each proximity switch and the mounting plate is specifically that a supporting plate is movably connected on the mounting plate, and the proximity switches are movably connected on the supporting plate.
Preferably, the mounting plate is movably connected with the support plate, namely, a strip hole I is formed in the mounting plate, and the support plate is connected with the strip hole I through a fastening bolt; the supporting plate is movably connected with the proximity switch, specifically, a strip hole II is formed in the supporting plate, and the proximity switch is connected with the strip hole II through a fastening bolt. The change of the up-and-down position of the proximity switch can be realized by adjusting the position of the fastening bolt on the mounting plate, and the change of the left-and-right position of the proximity switch can be realized by adjusting the position of the fastening bolt on the support plate. The position of the proximity switch is adjusted to facilitate the measurement of the position of the slider, and thus the position of the hydraulic valve.
Preferably, the fixing frame is provided with a guide groove, the end part of the piston rod is fixedly connected with a guide rod, the tail end of the guide rod is positioned in the guide groove, the guide rod slides along the guide groove, and the guide rod and the guide groove are matched to play a guide role, so that stable pulling of wire drawing can be realized.
The beneficial effects of the invention are as follows:
1. the in-place signal is led to the outside of the coal mill by utilizing the wire drawing in a pure physical mode, the influence of the dust accumulation and the heat leakage on the proximity switch is avoided, meanwhile, the operation place is transferred to the outside of the coal mill by the narrow space inside the coal mill, the operation space is large, and the maintenance is very convenient.
2. The guide rod and the guide groove cooperate to play a role in guiding, so that stable pulling of the wire drawing can be realized.
3. The change of the up-and-down position of the proximity switch can be realized by adjusting the position of the fastening bolt on the mounting plate, and the change of the left-and-right position of the proximity switch can be realized by adjusting the position of the fastening bolt on the support plate. The position of the proximity switch is adjusted to facilitate the measurement of the position of the slider, and thus the position of the hydraulic valve.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic side view of the feedback mechanism of the present invention;
the figure shows:
1. the hydraulic cylinder, 2, wire drawing, 3, protective sheath, 4, base, 5, reset spring, 6, proximity switch, 7, rectangular hole I, 8, stand, 9, spout, 10, sliding block, 11, roof, 12, mount, 13, guide way, 14, guide bar, 15, piston rod, 16, mounting panel, 17, backup pad, 18, rectangular hole II.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
As shown in fig. 1, the invention comprises a hydraulic cylinder 1 arranged at the lower part of a coal mill and a feedback mechanism arranged outside the coal mill, wherein a wire drawing 2 is connected between the hydraulic cylinder 1 and the feedback mechanism, a protective sleeve 3 is sleeved outside the wire drawing 2, and the wire drawing 2 can be drawn back and forth in the protective sleeve 3.
The feedback mechanism comprises a base 4, a return spring 5, a proximity switch 6, a door-shaped support and a sliding block 10 which is connected to the door-shaped support in a sliding mode, wherein the door-shaped support is fixedly connected to the base 4, sliding blocks 10 are connected with the door-shaped support in a sliding mode, sliding grooves 9 are formed in the inner sides of the left upright post and the right upright post 8 of the door-shaped support, the sliding grooves 9 are located along the direction of the long shafts of the upright posts 8, the left end and the right end of the sliding block 10 are located in the two sliding grooves 9 respectively, and the sliding block 10 can move up and down along the sliding grooves 9. One end of the return spring 5 is fixedly connected with the sliding block 10, and the other end is fixedly connected with the door-shaped bracket top plate 11. As shown in fig. 2, one side of the portal frame is provided with a mounting plate 16, the mounting plate 16 is fixedly connected to the base 4, and the plane of the mounting plate 16 is parallel to the plane of the portal frame. The number of the proximity switches 6 is two, the two proximity switches 6 are all arranged on the mounting plate 16, the two proximity switches 6 are respectively arranged on the upper side and the lower side of the sliding block 10, and the arrangement mode of each proximity switch 6 and the mounting plate 16 is that the mounting plate 16 is movably connected with the supporting plate 17, and the supporting plate 17 is movably connected with the proximity switches 6. The mounting plate 16 is movably connected with the support plate 17, specifically, a strip hole I7 is formed in the mounting plate 16, and the support plate 17 is connected with the strip hole I7 through a fastening bolt. The supporting plate 17 is movably connected with the proximity switch 6, specifically, a strip hole II 18 is formed in the supporting plate 17, and the proximity switch 6 is connected with the strip hole II 18 through a fastening bolt. The up-and-down position of the proximity switch 6 can be changed by adjusting the position of the fastening bolt on the mounting plate 16, and the left-and-right position of the proximity switch 6 can be changed by adjusting the position of the fastening bolt on the support plate 17. The position adjustment of the proximity switch 6 facilitates measuring the position of the slider 10 and thus the position of the hydraulic valve.
One side of the hydraulic cylinder 1 is fixedly connected with a fixing frame 12, one end of the protective sleeve 3 is fixedly connected with the fixing frame 12, and the wire drawing 2 in one end of the protective sleeve 3 fixedly connected with the fixing frame 12 is fixedly connected with a piston rod 15 of the hydraulic cylinder 1. The other end of the protective sleeve 3 is fixedly connected with the base 4, and the wire drawing 2 in the end, fixedly connected with the base 4, of the protective sleeve 3 is fixedly connected with the sliding block 10.
In order to enable the piston rod 15 of the hydraulic cylinder 1 to stably pull the wire drawing 2, the fixing frame 12 is provided with a guide groove 13, the end part of the piston rod 15 is fixedly connected with a guide rod 14, the tail end of the guide rod 14 is positioned in the guide groove 13, and in the process that the piston rod 15 pulls the wire drawing 2, the guide rod 14 slides along the guide groove 13, and the guide rod 14 and the guide groove 13 are matched to play a guide role, so that stable pulling of the wire drawing 2 can be realized.
When the hydraulic valve is particularly used, the hydraulic cylinder 1 provides power to execute corresponding action, the sliding block 10 is pulled to move downwards by the action of the hydraulic valve through the wire drawing 2, the reset spring 5 is in a tensioning state at the moment, the hydraulic valve acts again, the wire drawing 2 is released, the reset spring 5 is contracted, and the sliding block 10 is pulled back to the original position by means of the elasticity of the reset spring 5. The position of the sliding block 10 is detected by two proximity switches 6 arranged up and down in the process of moving the sliding block 10 up and down, so that the position of the hydraulic valve is measured. The in-place signal is led to the outside of the coal mill by utilizing the wire drawing 2 in a purely physical mode, the problem of dust accumulation and heat leakage is avoided, the influence on the proximity switch 6 is avoided, meanwhile, the operation place is transferred to the outside of the coal mill by the narrow space inside the coal mill, the operation space is large, and the maintenance is very convenient.
Of course, the above description is not limited to the above examples, and the technical features of the present invention that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present invention and not for limiting the same, and the present invention has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present invention and the scope of the appended claims.
Claims (3)
1. The utility model provides a coal pulverizer hydraulic valve signal feedback device that targets in place, includes to install at coal pulverizer lower part pneumatic cylinder (1), its characterized in that: the coal pulverizer is characterized by further comprising a feedback mechanism positioned outside the coal pulverizer, wherein a wire drawing (2) is connected between the hydraulic cylinder (1) and the feedback mechanism, a protective sleeve (3) is sleeved outside the wire drawing (2), and the wire drawing (2) can be drawn back and forth in the protective sleeve (3); the feedback mechanism comprises a base (4), a return spring (5), a proximity switch (6), a door-shaped bracket and a sliding block (10) which is connected to the door-shaped bracket in a sliding manner, and the door-shaped bracket is fixedly connected to the base (4); one end of the reset spring (5) is fixedly connected with the sliding block (10), and the other end of the reset spring is fixedly connected with the door-shaped bracket top plate (11); one side of the door-shaped support is provided with a mounting plate (16), the mounting plate (16) is fixedly connected to the base (4), the number of the two proximity switches (6) is two, the two proximity switches (6) are arranged on the mounting plate (16), and the two proximity switches (6) are respectively positioned on the upper side and the lower side of the sliding block (10); one side of the hydraulic cylinder (1) is fixedly connected with a fixing frame (12), one end of the protective sleeve (3) is fixedly connected with the fixing frame (12), the wire drawing (2) in the inner part of one end of the protective sleeve (3) fixedly connected with the fixing frame (12) is fixedly connected with a piston rod (15) of the hydraulic cylinder (1), the other end of the protective sleeve (3) is fixedly connected with the base (4), the wire drawing (2) in the inner part of one end of the protective sleeve (3) fixedly connected with the base (4) is fixedly connected with the sliding block (10),
the sliding blocks (10) are in sliding connection with the portal support, namely, sliding grooves (9) are formed in the inner side surfaces of the left upright post and the right upright post (8) of the portal support, the sliding grooves (9) are located along the direction of the long axis of the upright post (8), the left end and the right end of each sliding block (10) are respectively located in the two sliding grooves (9), and the sliding blocks (10) can move up and down along the sliding grooves (9);
the arrangement mode of each proximity switch (6) and the mounting plate (16) is that the mounting plate (16) is movably connected with the supporting plate (17), and the supporting plate (17) is movably connected with the proximity switch (6).
2. The coal pulverizer hydraulic valve in-place signal feedback device according to claim 1, wherein: the mounting plate (16) is movably connected with the supporting plate (17), namely, a strip hole I (7) is formed in the mounting plate (16), and the supporting plate (17) is connected with the strip hole I (7) through a fastening bolt; the supporting plate (17) is movably connected with the proximity switch (6), namely, a strip hole II (18) is formed in the supporting plate (17), and the proximity switch (6) is connected with the strip hole II (18) through a fastening bolt.
3. The coal pulverizer hydraulic valve in-place signal feedback device according to claim 1, wherein: the fixing frame (12) is provided with a guide groove (13), the end part of the piston rod (15) is fixedly connected with a guide rod (14), and the tail end of the guide rod (14) is positioned in the guide groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710506826.9A CN107143687B (en) | 2017-06-28 | 2017-06-28 | Hydraulic valve in-place signal feedback device of coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710506826.9A CN107143687B (en) | 2017-06-28 | 2017-06-28 | Hydraulic valve in-place signal feedback device of coal mill |
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| Publication Number | Publication Date |
|---|---|
| CN107143687A CN107143687A (en) | 2017-09-08 |
| CN107143687B true CN107143687B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710506826.9A Active CN107143687B (en) | 2017-06-28 | 2017-06-28 | Hydraulic valve in-place signal feedback device of coal mill |
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| CN (1) | CN107143687B (en) |
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| CN2040201U (en) * | 1988-09-22 | 1989-06-28 | 白严冬 | Hydraulic plate-type gate valve with a build-in rod |
| DE4029548A1 (en) * | 1990-09-18 | 1992-03-19 | Hydromatik Gmbh | CONTROL AND REGULATION DEVICE FOR A HYDROSTATIC GEARBOX |
| DE202007002760U1 (en) * | 2007-02-26 | 2007-04-26 | Barabas-Lammert, Kurt, Dr. | Electromagnetic actuator drive for control valve and shut-off fittings, has drive connection formed via thrust- or pull-rod with axially movable part of electromagnetic drive unit |
| CN201293145Y (en) * | 2008-11-25 | 2009-08-19 | 上海宝钢设备检修有限公司 | Feedback verifying device for valve position |
| CN201972991U (en) * | 2011-04-22 | 2011-09-14 | 南京中船绿洲机器有限公司 | Hydraulic blocking valve with valve core position feedback |
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| CN203822751U (en) * | 2014-03-27 | 2014-09-10 | 大唐安阳发电厂 | External leakage prevention device for coal mill hydraulically operated direction control valve |
| CN204380834U (en) * | 2014-12-26 | 2015-06-10 | 大唐贵州发耳发电有限公司 | A kind of pulverizer lubricate station control circuit |
| CN204553927U (en) * | 2015-03-05 | 2015-08-12 | 哈尔滨电机厂有限责任公司 | Two four-way hydraulic operated valves |
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-
2017
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| DE4029548A1 (en) * | 1990-09-18 | 1992-03-19 | Hydromatik Gmbh | CONTROL AND REGULATION DEVICE FOR A HYDROSTATIC GEARBOX |
| DE202007002760U1 (en) * | 2007-02-26 | 2007-04-26 | Barabas-Lammert, Kurt, Dr. | Electromagnetic actuator drive for control valve and shut-off fittings, has drive connection formed via thrust- or pull-rod with axially movable part of electromagnetic drive unit |
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| CN103148259A (en) * | 2013-03-07 | 2013-06-12 | 世林（漯河）冶金设备有限公司 | Furnace top bleeding valve with safety protection function |
| CN203822751U (en) * | 2014-03-27 | 2014-09-10 | 大唐安阳发电厂 | External leakage prevention device for coal mill hydraulically operated direction control valve |
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| CN204553927U (en) * | 2015-03-05 | 2015-08-12 | 哈尔滨电机厂有限责任公司 | Two four-way hydraulic operated valves |
| CN104847912A (en) * | 2015-05-20 | 2015-08-19 | 苏州福润机械有限公司 | Adjustable flow valve |
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| CN107143687A (en) | 2017-09-08 |
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