CN111689172A - Anti-deviation and tensioning protection device and method for dehydrator - Google Patents
Anti-deviation and tensioning protection device and method for dehydrator Download PDFInfo
- Publication number
- CN111689172A CN111689172A CN202010712900.4A CN202010712900A CN111689172A CN 111689172 A CN111689172 A CN 111689172A CN 202010712900 A CN202010712900 A CN 202010712900A CN 111689172 A CN111689172 A CN 111689172A
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- Prior art keywords
- crank arm
- switch
- belt
- group
- filter cloth
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/02—Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load carriers, e.g. for interrupting the drive in the event of overheating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
- B65G2203/0283—Position of the load carrier
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- Treatment Of Fiber Materials (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention provides a deviation-preventing and tensioning protection device and method for a dehydrator, and relates to the field of gypsum dehydration equipment. The device comprises a dehydrator, two groups of crank arm switches, a group of inductive switches and a control system, wherein the inductive switches are all arranged on a rack, and a hanging roller is connected with the inductive switches through a metal wire; the device also comprises a waterproof cover fixed on the rack, and the waterproof cover and the crank arm switches are in one-to-one correspondence; the two groups of crank arm switches comprise a first group of crank arm switches for preventing the belt from deviating and a second group of crank arm switches for preventing the filter cloth from deviating, and the crank arm switches of each group are respectively fixed in waterproof covers on two sides of the belt and the filter cloth; a glue pouring area is arranged inside the crank arm switch; the crank arm switch and the inductive switch are both connected with the control system; the invention solves the problems of switch failure, misoperation and damage by methods of shifting and changing the installation mode of the crank arm switch, changing the model of the inductive switch and the signal acquisition mode and the like, and improves the waterproof and corrosion-resistant capability of the switch, thereby prolonging the service life of the switch.
Description
Technical Field
The invention relates to the field of gypsum dewatering equipment, in particular to an anti-deviation and tensioning protection device for a dewatering machine and a using method.
Background
The desulfurization system comprises a vacuum belt dehydrator for dehydrating gypsum, and due to large moisture on site, the switch is seriously corroded, so that the switch is easily rejected and mistakenly operated; the filter cloth can not be well protected, and the safe and stable operation of the dehydrator is influenced. The existing dehydrator has the following problems:
1. the switch is fed with water to cause short circuit of a contact, and a signal is sent by mistake to cause tripping of the dehydrator;
2. the installation is unreasonable, and the protection switch is easily damaged by moisture;
3. when the filter cloth is turned over during deviation, the deviation switch cannot be triggered;
6. the tensioning switch and the hanging roller are in hard contact, and the switch is often damaged by impact when tensioning occurs;
5. the tensioning switch is normally open, the hanging roller can be directly out of the range of the travel switch when the hanging roller rises instantly under the condition of tensioning, the tensioning switch can not keep instant triggering conditions, and the switch signal which is not started to act for protection is lost sometimes.
Disclosure of Invention
The invention aims to provide a vacuum belt dehydrator which is waterproof and corrosion-resistant and solves the problems of switch failure and misoperation. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an anti-deviation and tension protection device for a dehydrator, which comprises filter cloth, a hanging roller, a carrier roller, a fixed rolling shaft, a belt and a rack, wherein the filter cloth is attached to the belt; the method is characterized in that: the device also comprises two groups of crank arm switches, one group of inductive switches and a control system; wherein:
preferably, the induction switch is installed on the rack, the induction switch is located below the lowest stroke position of the hanging roller, and the hanging roller is connected with the induction switch through a metal wire; the device also comprises waterproof covers fixed on the rack, and the waterproof covers correspond to the crank arm switches one by one; the two groups of crank arm switches comprise a first group of crank arm switches for preventing the belt from deviating and a second group of crank arm switches for preventing the filter cloth from deviating, each group of crank arm switches comprises two crank arm switches, and the crank arm switches of each group are respectively fixed in waterproof covers on two sides of the belt and the filter cloth; a glue pouring area is arranged inside the crank arm switch; the crank arm switch and the inductive switch are both connected with the control system.
Preferably, the belt comprises an advancing side belt and a rotating side belt, and the first group of crank arm switches are positioned between the advancing side belt and the rotating side belt and are positioned between the side edge of the belt and the rack; the second group of crank arm switches are positioned between the rotary side belt and the filter cloth and are arranged between the side edge of the filter cloth and the rack.
Preferably, the crank arm switch comprises a switch seat and a crank arm, the glue pouring area is located in the switch seat, and the switch seat is arranged in the waterproof cover; one end of the crank arm is arranged in the switch seat; the other end of the crank arm of the first group of crank arm switches is positioned at two sides of the belt, and the other end of the crank arm of the second group of crank arm switches is positioned at two sides of the filter cloth
Preferably, an alarm is arranged on the control system.
Preferably, the inductive switch is a normally closed contact ring type metal inductive switch; one end of the metal wire is fixedly connected with the hanging roller, and the other end of the metal wire is fixedly connected with the induction ring of the induction switch.
Preferably, the operating speed of the crank arm switch is selected to be 0.5-50 cm/sec.
A method for preventing deviation and tension of a deviation and tension preventing device of a dehydrator comprises the following steps:
s11: when the filter cloth on the dehydrator deviates beyond the set distance a of the edge of the carrier roller in the running process, the filter cloth can touch the crank arms of the second group of crank arm switches, the controller receives an electric signal transmitted by the second group of crank arm switches, the control system controls the alarm to give an alarm, and the control system controls the conveyor belt to stop working;
s12: when the belt on the dehydrator deviates beyond the set distance b of the edge of the carrier roller in the running process, the belt can touch the crank arms of the first group of crank arm switches, the control system receives electric signals transmitted by the first group of crank arm switches, the control system controls the alarm to alarm, and the control system controls the conveyor belt to stop working;
s2: the inductive switch selects a normally closed contact ring type metal inductive switch, when the filter cloth is tensioned, the hanging roller moves upwards to pull out the metal wire from the inductive switch ring, the switch restores to an initial normally closed state and sends a tensioning signal to the control system, and the control system sends a tensioning protection signal and keeps the tensioning protection signal until the filter cloth is restored on site.
Based on the technical scheme, the following technical effects can be generated:
the anti-deviation and tensioning protection device for the dehydrator is simple in overall structure, good in stability and high in reliability; the device can effectively improve the water resistance of the switch by pouring glue into the glue pouring area of the crank arm switch and installing the crank arm switch in the waterproof cover, does not influence the action reliability of the switch when working in a humid environment, and effectively prolongs the service life of the switch; the change of the installation position of the crank arm switch can effectively prevent the phenomenon that the switch refuses to move due to factors such as filter cloth curling and the like; the induction switch is formed by changing the hard trigger of the tension switch, the hanging roller and the induction switch can not be directly contacted, and the damage of the switch caused by collision is effectively prevented; only the induction ring with the induction switch brought out by the metal wire is needed to be arranged, the short pulse signal is changed into the long signal, and the tensioning signal can be effectively kept to be sent out; after an operator replaces filter cloth or turns off the carrier roller, the height change of the hanging roller only needs to replace the length of the induction cable, and daily tests only need to manually connect the induction cable out of the induction ring and put the induction cable into the induction ring, so that the daily maintenance is greatly facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a crank switch installation of the present invention;
FIG. 2 is a simplified installation diagram of the inductive switch of the present invention;
FIG. 3 is a schematic view of a crank arm switch;
in the figure: 1-a waterproof cover; 2-crank arm switch; 201-crank arm; 202-a switch base; 203-glue pouring area; 21-a first set of rocker switches; 22-a second set of rocker switches; 4-carrying roller; 5-filtering cloth; 6-hanging the roller; 7-a frame; 8-fixing the roller; 9-a metal wire; 10-an inductive switch; 11-a belt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1-3:
the invention provides an anti-deviation and tensioning protection device for a dehydrator, which comprises filter cloth 5, a hanging roller 6, a carrier roller 4, a fixed rolling shaft 8, a belt 11 and a frame 7, wherein the filter cloth 5 is attached to the belt 11, one end of the filter cloth 5 bypasses the fixed rolling shaft 8 and is connected with the hanging roller 6, the other end of the filter cloth 5 is connected with the carrier roller 4, a sliding groove is formed in the frame 7, and a shaft of the hanging roller 6 is arranged in the sliding groove and is movably connected with the sliding groove; the method is characterized in that: the device also comprises two groups of crank arm switches 2, one group of inductive switches 10 and a control system; wherein:
the induction switch 10 is installed on the rack 7, the induction switch 10 is located below the lowest stroke position of the hanging roller 6, and the hanging roller 6 is connected with the induction switch 10 through a metal wire 9; the device also comprises a waterproof cover 1 fixed on the frame 7, wherein the waterproof cover 1 corresponds to the crank arm switches 2 one by one; the two groups of crank arm switches 2 comprise a first group of crank arm switches 21 for preventing the belt 11 from deviating and a second group of crank arm switches 22 for preventing the filter cloth 5 from deviating, each group of crank arm switches 2 comprises two crank arm switches 2, and the crank arm switches 2 of each group are respectively fixed in the waterproof covers 1 on two sides of the belt 11 and the filter cloth 5; a glue pouring area is arranged inside the crank arm switch 2; the crank arm switch 2 and the inductive switch 10 are both connected with a control system.
Preferably, the belt 11 comprises a forward side belt and a return side belt, and the first set of crank switches 21 is located between the forward side belt and the return side belt and is disposed between the side edge of the belt 11 and the frame 7; the second group of crank arm switches 22 are positioned between the rotary side belt and the filter cloth 5 and between the side edge of the filter cloth 5 and the frame 7
Preferably, the crank arm switch 2 comprises a switch base 202 and a crank arm 201, the glue pouring area 203 is located in the switch base 202, and the switch base 202 is arranged in the waterproof cover 1; one end of the crank arm 201 is arranged in the switch base 202, the other end of the crank arm 201 of the first group of crank arm switches 21 is positioned at two sides of the belt 11, and the other end of the crank arm 201 of the second group of crank arm switches 22 is positioned at two sides of the filter cloth 5.
Preferably, an alarm is arranged on the control system.
Preferably, the inductive switch 10 is a normally closed contact ring type metal inductive switch 10; one end of the metal wire 9 is fixedly connected with the hanging roller 66, and the other end of the metal wire 9 is fixedly connected with the annular hole of the inductive switch 10.
Preferably, the glue pouring area 203 of the crank arm switch 2 is filled with glue, so that the switch can be effectively prevented from being short-circuited and can be soaked in water for use.
Preferably, the crank arm 201 is made of stainless steel, so that rusting can be effectively prevented.
Preferably, the crank arm switch 2 is vertically installed, and the crank arm 201 is located below the switch base 202.
Preferably, the distance between the crank arm switch 2 and the edge of the carrier roller 4 is 9mm-10 mm.
Preferably, the operating speed of the crank switch 2 is selected to be 0.5-50 cm/sec.
A method for preventing deviation and tension of a deviation and tension preventing device of a dehydrator comprises the following steps:
s11: as shown in fig. 1, when the belt 11 on the dehydrator deviates beyond the set distance of 9mm-10mm from the edge of the carrier roller 4 in operation, the filter cloth 5 touches the crank 201 of the second set of crank switches 22, the controller receives an electric signal transmitted from the second set of crank switches 22, the control system controls the alarm to alarm and controls the conveyor belt to stop working;
s12: when the filter cloth 5 on the dehydrator deviates beyond the set distance of 9-10 mm from the edge of the carrier roller 4 in operation, the filter cloth 5 can touch the crank arms 201 of the first group of crank arm switches 21, the controller receives an electric signal transmitted by the first group of crank arm switches 21, the control system controls the alarm to alarm and controls the conveyor belt to stop working;
s2: as shown in figure 2, the inductive switch 10 selects a normally closed contact ring type metal inductive switch 10, when the filter cloth 5 is tensioned, the hanging roller 6 moves upwards, the metal wire 9 is pulled out of the inductive switch 10 ring, the switch returns to the initial normally closed state and sends a tensioning signal to the control system, and the control system sends a tensioning protection signal and keeps the tensioning protection signal until the site returns.
Claims (6)
1. A deviation-preventing and tensioning protection device of a dehydrator comprises filter cloth (5), a hanging roller (6), a carrier roller (4), a fixed rolling shaft (8), a belt (11) and a frame (7), wherein the filter cloth (5) is attached to the belt (11), one end of the filter cloth (5) bypasses the fixed rolling shaft (8) and is connected with the hanging roller (6), the other end of the filter cloth (5) is connected with the carrier roller (4), a sliding groove is formed in the frame (7), and a shaft of the hanging roller (6) is arranged in the sliding groove and is movably connected with the sliding groove; the method is characterized in that: the device also comprises two groups of crank arm switches (2), one group of inductive switches (10) and a control system; wherein:
the induction switch (10) is installed on the rack (7), the induction switch (10) is located below the lowest stroke position of the hanging roller (6), and the hanging roller (6) is connected with the induction switch (10) through a metal wire (9); the device is characterized by further comprising waterproof covers (1) fixed on the rack (7), wherein the waterproof covers (1) correspond to the crank arm switches (2) one by one; the two groups of crank arm switches (2) comprise a first group of crank arm switches (21) for preventing the belt (11) from deviating and a second group of crank arm switches (22) for preventing the filter cloth (5) from deviating, each group of crank arm switches (2) comprises two crank arm switches (2), and the crank arm switches (2) of each group are respectively fixed in waterproof covers (1) on two sides of the belt (11) and the filter cloth (5); a glue pouring area is arranged inside the crank arm switch (2); the crank arm switch (2) and the inductive switch (10) are both connected with a control system.
2. The deviation-preventing and tensioning protection device of the dewatering machine according to claim 1, characterized in that: the belt (11) comprises an advancing side belt and a rotating side belt, and the first group of crank arm switches (21) are positioned between the advancing side belt and the rotating side belt and are arranged between the side edge of the belt (11) and the rack (7); the second group of crank arm switches (22) are positioned between the rotary side belt and the filter cloth (5) and are arranged between the side edge of the filter cloth (5) and the rack (7).
3. The deviation-preventing and tensioning protection device of the dewatering machine according to claim 1, characterized in that: the crank arm switch (2) comprises a switch seat (202) and a crank arm (201), the glue pouring area (203) is located in the switch seat (202), and the switch seat (202) is arranged in the waterproof cover (1); one end of the crank arm (201) is arranged in the switch base (202); the other end of the crank arm (201) of the first group of crank arm switches (21) is positioned on two sides of the belt (11), and the other end of the crank arm (201) of the second group of crank arm switches (22) is positioned on two sides of the filter cloth (5).
4. The deviation-preventing and tensioning protection device of the dewatering machine according to claim 1, characterized in that: and an alarm is arranged on the control system.
5. The deviation-preventing and tensioning protection device of the dewatering machine according to claim 1, characterized in that: the inductive switch (10) is a normally closed contact ring type metal inductive switch (10); one end of the metal wire (9) is fixedly connected with the hanging roller (6), and the other end of the metal wire (9) is fixedly connected with the induction ring of the induction switch (10).
6. The deviation-preventing and tensioning protection method of the dewaterer according to any one of claims 1-5, wherein the deviation-preventing and tensioning protection method comprises the following steps: the method comprises the following steps:
s11: when the filter cloth (5) on the dehydrator deviates beyond the set distance a at the edge of the carrier roller (4) in the running process, the filter cloth (5) can touch the crank arms (201) of the second group of crank arm switches (22), the controller receives an electric signal transmitted by the second group of crank arm switches (22), the control system controls the alarm to give an alarm and controls the conveyor belt to stop working;
s12: when a belt (11) on the dehydrator deviates beyond a set distance b from the edge of the carrier roller (4) in operation, the belt (11) can touch the crank arms (201) of the first group of crank arm switches (21), the control system receives electric signals transmitted by the crank arms of the first group of crank arm switches (21), the control system controls the alarm to give an alarm and controls the conveyor belt to stop working;
s2: the inductive switch (10) selects a normally closed contact ring type metal inductive switch (10), when the filter cloth (5) is tensioned, the hanging roller (6) moves upwards, the metal wire (9) is pulled out of the inductive switch (10) ring, the switch restores to an initial normally closed state and sends a tensioning signal to the control system, and the control system sends a tensioning protection signal and keeps the same until the filter cloth is restored to the site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712900.4A CN111689172B (en) | 2020-07-22 | 2020-07-22 | Deviation-preventing and tensioning protecting device and method for dehydrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010712900.4A CN111689172B (en) | 2020-07-22 | 2020-07-22 | Deviation-preventing and tensioning protecting device and method for dehydrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111689172A true CN111689172A (en) | 2020-09-22 |
| CN111689172B CN111689172B (en) | 2024-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010712900.4A Active CN111689172B (en) | 2020-07-22 | 2020-07-22 | Deviation-preventing and tensioning protecting device and method for dehydrator |
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| CN (1) | CN111689172B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4673514A (en) * | 1982-09-27 | 1987-06-16 | Enviro-Clear Company, Inc. | Fluid film bearing for use in horizontal belt vacuum filters |
| CN201990175U (en) * | 2010-11-01 | 2011-09-28 | 浙江双箭橡胶股份有限公司 | Vacuum dehydration type conveying device |
| JP2016073928A (en) * | 2014-10-07 | 2016-05-12 | 株式会社石垣 | Belt press filter cloth unfolding device |
| CN205873066U (en) * | 2016-08-12 | 2017-01-11 | 昆明南方水务有限公司 | Band conveyer with prevent centring device |
| CN207759521U (en) * | 2017-12-29 | 2018-08-24 | 郑州工业应用技术学院 | A kind of filter press conveying device |
| CN212449433U (en) * | 2020-07-22 | 2021-02-02 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Anti-deviation and tensioning protection device for dehydrator |
-
2020
- 2020-07-22 CN CN202010712900.4A patent/CN111689172B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4673514A (en) * | 1982-09-27 | 1987-06-16 | Enviro-Clear Company, Inc. | Fluid film bearing for use in horizontal belt vacuum filters |
| CN201990175U (en) * | 2010-11-01 | 2011-09-28 | 浙江双箭橡胶股份有限公司 | Vacuum dehydration type conveying device |
| JP2016073928A (en) * | 2014-10-07 | 2016-05-12 | 株式会社石垣 | Belt press filter cloth unfolding device |
| CN205873066U (en) * | 2016-08-12 | 2017-01-11 | 昆明南方水务有限公司 | Band conveyer with prevent centring device |
| CN207759521U (en) * | 2017-12-29 | 2018-08-24 | 郑州工业应用技术学院 | A kind of filter press conveying device |
| CN212449433U (en) * | 2020-07-22 | 2021-02-02 | 大唐华银电力股份有限公司金竹山火力发电分公司 | Anti-deviation and tensioning protection device for dehydrator |
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| CN111689172B (en) | 2024-08-13 |
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