CN214946436U - Automatic switching valve - Google Patents
Automatic switching valve Download PDFInfo
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- CN214946436U CN214946436U CN202120740219.0U CN202120740219U CN214946436U CN 214946436 U CN214946436 U CN 214946436U CN 202120740219 U CN202120740219 U CN 202120740219U CN 214946436 U CN214946436 U CN 214946436U
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- connecting rod
- switching
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Abstract
The utility model discloses an automatic switching valve, parallel valve body around two, but be provided with the removal pipeline of back-and-forth movement between two valve bodies, the inside valve pocket that is provided with of valve body, be provided with switching mechanism in the valve pocket, be provided with link gear between two switching mechanisms in the front and back, the top of removal pipeline is provided with hits a mechanism, hit a mechanism and link gear cooperate and drive two switching mechanisms around realizing the switch action. The utility model relates to an automatic diverter valve can carry out amount of wind on-off control according to the actual position of collection petticoat pipe, has effectively avoided the loss of the amount of wind, improves flue gas entrapment effect.
Description
Technical Field
The utility model belongs to the technical field of the metallurgy, concretely relates to automatic switching valve.
Background
At present, the smoke collecting form of the intermediate frequency furnace mainly adopts an umbrella-shaped rotating cover, the umbrella-shaped rotating cover is erected above the furnace mouths of the intermediate frequency furnace, rotates by taking the axis in the middle of the two intermediate frequency furnaces as a center, and is alternately covered above the furnace mouths of the two intermediate frequency furnaces. When feeding, the rotating cover is moved away, and the materials are directly fed through a travelling crane on the top of a workshop; when tapping, the furnace platform of the intermediate frequency furnace is turned forwards, and the furnace mouth is positioned outside the cover mouth of the umbrella-shaped cover. In addition, because the charging is frequent in the steelmaking process, the effective working time of the umbrella-shaped cover above the furnace mouth is short, and the flue gas trapping rate is lower than about 50 percent. At present, some manufacturers adopt a roof secondary dust removal and smoke exhaust mode to solve the problem that the umbrella-shaped cover cannot collect and diffuse residual smoke in a workshop. The secondary dust removal and smoke exhaust needs to arrange a plurality of air suction covers at the top of the plant, and residual smoke is exhausted through independent dust removal equipment. By adopting the mode, the requirement on the air exhaust volume of the system is high, the equipment investment is large, the use cost is high, in addition, the air speed of the cover opening of the air suction cover is slow, the smoke exhaust effect is not obvious, and particularly, under the condition that the atmospheric pressure is lower in winter, the emitted residual smoke is accumulated at the bottom of a workshop and cannot reach the top of the workshop, so that the residual smoke in the workshop cannot be effectively exhausted.
In order to solve the problems, patent No. 20082003690104 discloses an intermediate frequency furnace flue gas trapping device which can better realize the trapping of flue gas, but the smoke collecting hood is connected with a smoke exhaust main pipe through a rotatable smoke exhaust pipe, so that the device occupies a large space and cannot meet the complex working condition requirements of a factory; and discover in the actual intermediate frequency furnace smelting process, when the collection petticoat pipe was followed and is switched when the intermediate frequency furnace station switches, because of furnace body top high temperature, lead to the valve power head to receive high temperature radiation and damage, finally lead to the pipe network can't in time to switch over the amount of wind, cause effective amount of wind not be the loss, seriously influence the smoke and dust entrapment effect of this station and other stations, destroy entire system air volume balance even.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automatic switching valve can carry out amount of wind on-off control according to the actual position of collection petticoat pipe, has effectively avoided the loss of the amount of wind, improves flue gas entrapment effect.
In order to achieve the above object, the utility model provides a following technical scheme: the automatic switching valve comprises two valve bodies which are parallel front and back, a movable pipeline capable of moving back and forth is arranged between the two valve bodies, a valve cavity is arranged inside the valve body, a switching mechanism is arranged in the valve cavity, a linkage mechanism is arranged between the front switching mechanism and the rear switching mechanism, a collision block mechanism is arranged at the top of the movable pipeline, and the collision block mechanism is matched with the linkage mechanism to drive the front switching mechanism and the rear switching mechanism to realize switching action.
Furthermore, the switching mechanism comprises a valve plate which is vertically arranged, the top of the valve plate is rotatably connected with the top of the valve body through a vertical upper valve rod, the top end of the upper valve rod extends out of the valve body, and the bottom of the valve plate is rotatably connected with the bottom of the valve body through a vertical lower valve rod;
the linkage mechanism comprises a connecting rod which is longitudinally arranged, rotating arms are arranged at the front end and the rear end of the connecting rod, one end of each rotating arm is connected with the top end of the upper valve rod, and the middle of each rotating arm is connected with the end of the connecting rod.
Furthermore, an adjusting support is arranged outside the top of the moving pipeline, two collision block mechanisms symmetrically arranged front and back are arranged on the adjusting support, each collision block mechanism comprises a stud inserted on the adjusting support, a sleeve is sleeved on the stud, the bottom end of the stud is matched with the adjusting support through a first locking nut and a second locking nut and is fixedly connected with the adjusting support, and a limiting nut is arranged at the top end of the stud.
Further, the valve plates in the two valve bodies are vertically arranged.
Furthermore, a support frame is arranged outside the top of the valve body, and the bottom of the rotating arm is connected with the support frame in a sliding mode.
Furthermore, the connecting rod comprises a connecting rod main body, telescopic thread sections are arranged at two ends of the connecting rod main body, and the telescopic thread sections are connected with the rotating arm through movable joints;
furthermore, a reinforcing rib is arranged on one side face of the valve plate.
Furthermore, a plurality of waist-shaped holes are arranged on the adjusting bracket at intervals along the length direction of the adjusting bracket.
Compared with the prior art, the utility model provides an automatic switching valve possesses following beneficial effect:
the utility model relates to an automatic diverter valve can carry out amount of wind on-off control according to the actual position of collection petticoat pipe, has effectively avoided the loss of the amount of wind, improves flue gas entrapment effect.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:
fig. 1 is a schematic structural view of a flue gas capture system of an intermediate frequency furnace provided by the present invention;
FIG. 2 is a view taken along line A of FIG. 1;
FIG. 3 is a schematic diagram of two working states of the automatic switching valve;
FIG. 4 is a schematic view of the valve body and the moving pipe in FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 6 is an enlarged view of portion C of FIG. 4;
FIG. 7 is a schematic diagram of a spark arrestor.
In the figure:
flue gas collecting device 1
A charging platform 101; an intermediate frequency furnace 102; a smoke collection cover 103; an automatic switching valve 104; the valve body 104.1; a switching mechanism 104.2; a valve plate 104.2.1; an upper stem 104.2.2; a lower valve stem 104.2.3; a reinforcing rib 104.2.4; a linkage 104.3; a pivot arm 104.3.1; a link 104.3.2; a link body 104.3.21; telescoping thread segment 104.3.22; a movable joint 104.3.23; a support 104.3.3; a moving pipe 104.4; a bump mechanism 104.5; a stud 104.5.1; a first locking nut 104.5.2; a second lock nut 104.5.3; a sleeve 104.5.4; a limit nut 104.5.5; a buggy ladle 105; a charging cart 106; a main flue gas duct 107; a spark isolation cover 108; a double-row rail 109; an adjustment bracket 110;
a spark arrestor 2; a support 201; a barrel 202; an ash hopper 203; an ash discharge valve 204; a baffle 205; an air inlet 206; air outlet 207
A bag-type dust collector 3; a dust removal chamber 301; discharge port 302
A silencer 7.
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 work belong to the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a flue gas trapping system of an intermediate frequency furnace comprises a flue gas trapping device 1, a spark trap 2, a bag-type dust collector 3, a fan 4 and a smoke exhaust pipe 5 which are connected in sequence through pipelines,
the flue gas trapping device 1 comprises a feeding platform 101, a front intermediate frequency furnace 102 and a rear intermediate frequency furnace 102 which alternately work are arranged beside the feeding platform 101, wherein a buggy ladle 105 is arranged on one side of the intermediate frequency furnace 102 in a working state, a smoke collecting hood 103 (see the patent number 200820036901.6) which can move back and forth is arranged between the front intermediate frequency furnace 102 and the rear intermediate frequency furnace 102, the smoke collecting hood 103 covers one of the intermediate frequency furnaces 102 and the buggy ladle 105 (see the patent number 201220265669.X), a feeding trolley 106 (see the patent number 201220265668.5) which is used for feeding the intermediate frequency furnace 102 is arranged on the feeding platform 101, a longitudinally arranged main flue gas discharging pipe 107 is arranged above the feeding platform 101, an automatic switching valve 104 is arranged between the main flue gas discharging pipe 107 and the smoke collecting hood 103, and the automatic switching valve 104 can perform air volume on-off and-off control according to the actual position of the smoke collecting hood 103;
a smoke outlet is formed in the top of the smoke collecting cover 103, a spark isolation cover 108 (see the patent number of 201020101738.4) is hung at the smoke outlet, and the spark isolation cover 108 is used for preventing sparks from splashing outside to cause potential safety hazards when the intermediate frequency furnace 102 works;
the spark catcher 2 is used for carrying out secondary spark catching treatment on the flue gas;
the bag-type dust collector 3 is used for carrying out dust purification treatment on the flue gas;
the fan 4 is used for introducing the treated flue gas into the smoke exhaust tube 5 and discharging the treated flue gas through the smoke exhaust tube 5, and the fan 4 adopts a negative pressure centrifugal fan;
a wild wind valve 6 is arranged between the spark catcher 2 and the bag-type dust collector 3, and the wild wind valve 6 is used for adjusting the temperature of the flue gas, so that the bag-type dust collector 3 is prevented from being damaged due to overhigh temperature, and the service life of the bag-type dust collector 3 is prolonged;
a silencer 7 for reducing noise is arranged between the fan 4 and the smoke exhaust pipe 5;
and a concentration monitoring device is arranged on the smoke exhaust tube 5 and is used for monitoring the dust concentration of the discharged smoke to reach the standard.
The feeding platform 101 is provided with a front double-row track 109 and a rear double-row track 109, the double-row tracks 109 comprise two linear tracks with the tail ends arranged in a crossed manner, the two linear tracks are both connected with a feeding vehicle 106 in a sliding manner, the two feeding vehicles 106 can alternately work to feed materials into the same intermediate frequency furnace 102, the feeding speed is increased, and therefore the overall metallurgical efficiency is improved;
the automatic switching valve 104 comprises two valve bodies 104.1 which are parallel front and back, a valve cavity communicated with a main smoke exhaust pipeline 107 is arranged in the valve body 104.1, a switching mechanism 104.2 is arranged in the valve cavity, a linkage mechanism 104.3 is arranged between the front switching mechanism 104.2 and the rear switching mechanism 104.2, the automatic switching valve 104 further comprises a moving pipeline 104.4 connected with a smoke exhaust port of the smoke collecting hood 103, a collision block mechanism 104.5 is arranged at the top of the moving pipeline 104.4, and the collision block mechanism 104.5 is matched with the linkage mechanism 104.3 to drive the front switching mechanism 104.2 and the rear switching mechanism 104.2 to realize opening and closing actions;
the switching mechanism 104.2 comprises a valve plate 104.2.1 which is vertically arranged, the top of the valve plate 104.2.1 is rotatably connected with the top of the valve body 104.1 through an upright upper valve rod 104.2.2, the top end of the upper valve rod 104.2.2 extends out of the valve body 104.1, and the bottom of the valve plate 104.2.1 is rotatably connected with the bottom of the valve body 104.1 through an upright lower valve rod 104.2.3;
the linkage mechanism 104.3 comprises a connecting rod 104.3.2 which is longitudinally arranged, the front end and the rear end of the connecting rod 104.3.2 are provided with rotating arms 104.3.1, one end of each rotating arm 104.3.1 is connected with the top end of the upper valve rod 104.2.2, and the middle part of each rotating arm 104.3.1 is connected with the end part of the connecting rod 104.3.2;
preferably, the front and rear valve plates 104.2.1 are arranged vertically;
preferably, a square head is arranged at the top end of the upper valve lever 104.2.2, the manufacturing process of the square head is simple, the cost is low, one end of the rotating arm 104.3.1 is connected with the square head, and the axis of the rotating arm 104.3.1 and the center line of the square head are located on the same straight line;
an upper reinforcing rib 104.2.4 and a lower reinforcing rib 104.2.4 are arranged on one side face of the valve plate 104.2.1, the reinforcing ribs 104.2.4 are of an L-shaped structure, and openings of the upper reinforcing rib 104.2.4 and the lower reinforcing rib 104.2.4 are oppositely arranged;
a supporting frame 104.3.3 is arranged outside the top of the valve body 104.1, the bottom of the rotating arm 104.3.1 is connected with a supporting frame 104.3.3 in a sliding manner, and the supporting frame 104.3.3 is used for preventing the rotating arm 104.3.1 from bending due to gravity;
the connecting rod 104.3.2 comprises a connecting rod main body 104.3.21, telescopic thread sections 104.3.22 are arranged at two ends of the connecting rod main body 104.3.21, and the telescopic thread sections 104.3.22 are connected with the rotating arm 104.3.1 through a movable joint 104.3.23;
the top of the movable pipeline 104.4 is externally provided with a longitudinally arranged adjusting bracket 110, the adjusting bracket 110 is provided with two collision block mechanisms 104.5 which are symmetrically arranged front and back, each collision block mechanism 104.5 comprises a stud 104.5.1 inserted on the adjusting bracket 110, a sleeve 104.5.4 is sleeved on the stud 104.5.1, the bottom end of the stud 104.5.1 is matched and fixedly connected with the adjusting bracket 110 through a first locking nut 104.5.2 and a second locking nut 104.5.3, the top surface of the adjusting bracket 110 is clamped between the first locking nut 104.5.2 and the second locking nut 104.5.3, the top end of the stud 104.5.1 is provided with a limit nut 104.5.5, and the limit nut 104.5.5 is used for limiting the sleeve 104.5.4;
a plurality of kidney-shaped holes are formed in the adjusting bracket 110 at intervals along the length direction of the adjusting bracket, so that the mounting position of the stud 104.5.1 can be adjusted conveniently.
Working principle of the automatic switching valve 104:
the intermediate frequency furnace positioned at the front side is an intermediate frequency furnace A, and the intermediate frequency furnace positioned at the rear side is an intermediate frequency furnace B;
the valve body corresponding to the intermediate frequency furnace A is a station A, and the valve body corresponding to the intermediate frequency furnace B is a station B;
in the process that the smoke collecting hood moves to the intermediate frequency furnace A, the moving pipeline moves forwards along with the smoke collecting hood, when the collision block mechanism on the front side collides with the rotating arm at the station A, thrust can be generated on the rotating arm at the station A to drive the valve plate in the station A to rotate, the plane where the valve plate is located is parallel to the flow direction of airflow, and the airflow can pass through the station A without obstruction, so that the station A is opened; because the rotating arm at the station A is connected with the rotating arm at the station B through the connecting rod, the rotating arm at the station B can generate pulling force to drive the valve plate in the station B to rotate, so that the plane where the valve plate is located is perpendicular to the flow direction of the air flow, the air flow is completely blocked from passing through, and the station B realizes closing action;
in the process that the smoke collecting hood moves to the intermediate frequency furnace B, the movable pipeline moves backwards along with the smoke collecting hood, when the collision block mechanism on the rear side collides with the rotating arm at the station B, thrust can be generated on the rotating arm at the station B to drive the valve plate in the station B to rotate, the plane where the valve plate is located is parallel to the flow direction of air flow, the air flow can pass through the station B without obstruction, and therefore the station B can be opened; the rotating arm at the station B is connected with the rotating arm at the station B through the connecting rod, so that tension can be generated on the rotating arm at the station A to drive the valve plate in the station A to rotate, the plane where the valve plate is located is perpendicular to the flow direction of the air flow, the air flow is completely blocked from passing through, and the station A is closed; thereby in time carry out amount of wind switch control function according to the actual position of collection petticoat pipe.
The spark catcher 2 comprises a support 201, a barrel 202 is arranged on the support 201, the barrel 202 is arranged on the upper portion and the lower portion of the barrel 202, an air inlet 206 and an air outlet 207 are respectively arranged on the upper portion and the lower portion of the barrel 202, an ash hopper 203 is arranged at the bottom of the barrel 202, an ash discharge valve 204 is arranged at the bottom of the ash hopper 203, a plurality of baffle plates 205 inclining downwards are arranged on the inner wall of the barrel 202 from top to bottom at intervals, the baffle plates 205 are arranged in a vertically staggered mode, and the baffle plates 205 play a role in capturing and extinguishing sparks.
The spark catcher 2 is used for carrying out secondary trapping spark treatment on the smoke, the smoke containing sparks enters the cylinder 202 through the air inlet 206, the baffle plates 205 arranged in a vertically staggered mode enable the airflow to be in an S-shaped trend, the smoke stalls and falls into the ash hopper 203 when colliding with the baffle plates 205 due to the fact that the sparks in the smoke are higher than the density of the smoke, and the ash in the ash hopper 203 is emptied through the ash discharge valve 204.
The sack cleaner 3 includes three dust removal chamber 301 that is linked together, the top of dust removal chamber 301 is provided with the gas outlet, the bottom of dust removal chamber 301 is provided with discharge gate 302, discharge gate 302 department is provided with the unloading valve, and three dust removal chamber 301 simultaneous working has improved the purification dust collection efficiency of flue gas greatly.
An intermediate frequency furnace flue gas trapping process, which comprises the following steps:
step one, when the fume collecting hood moves to the position above an intermediate frequency furnace, two feeding cars alternately operate to feed materials into the intermediate frequency furnace, and steel is made in the fume collecting hood after the materials are fully fed; when tapping, the intermediate frequency furnace pours the molten steel into the ladle car, and the smoke generated in the feeding, steelmaking and tapping processes is discharged into the main smoke exhaust pipeline through the smoke collecting hood;
secondly, the flue gas enters a spark catcher to carry out secondary spark catching treatment;
thirdly, the flue gas after the secondary spark trapping treatment enters a bag-type dust collector for dust purification treatment;
preferably, the temperature of the flue gas before entering the bag-type dust collector is reduced through the wild wind valve 6;
and step four, introducing the purified flue gas into a smoke exhaust pipe by a fan and discharging.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An automatic switching valve, characterized by: the valve comprises two valve bodies (104.1) which are parallel to each other in the front and back direction, a movable pipeline (104.4) capable of moving back and forth is arranged between the two valve bodies (104.1), a valve cavity is arranged inside the valve body (104.1), a switching mechanism (104.2) is arranged in the valve cavity, a linkage mechanism (104.3) is arranged between the front switching mechanism and the rear switching mechanism (104.2), a collision block mechanism (104.5) is arranged at the top of the movable pipeline (104.4), and the collision block mechanism (104.5) is matched with the linkage mechanism (104.3) to drive the front switching mechanism and the rear switching mechanism (104.2) to realize switching action.
2. An automatic switching valve according to claim 1, characterized in that: the switching mechanism (104.2) comprises a valve plate (104.2.1) which is vertically arranged, the top of the valve plate (104.2.1) is rotatably connected with the top of the valve body (104.1) through an upright upper valve rod (104.2.2), the top end of the upper valve rod (104.2.2) extends out of the valve body (104.1), and the bottom of the valve plate (104.2.1) is rotatably connected with the bottom of the valve body (104.1) through an upright lower valve rod (104.2.3);
the linkage mechanism (104.3) comprises a connecting rod (104.3.2) which is longitudinally arranged, the front end and the rear end of the connecting rod (104.3.2) are provided with rotating arms (104.3.1), one end of each rotating arm (104.3.1) is connected with the top end of the upper valve rod (104.2.2), and the middle of each rotating arm (104.3.1) is connected with the end of the connecting rod (104.3.2).
3. An automatic switching valve according to claim 1, characterized in that: remove the top of pipeline (104.4) and be equipped with outward and adjust support (110), it hits a mechanism (104.5) to be provided with two front and back symmetrical arrangement on regulation support (110), hit a mechanism (104.5) including inserting stud (104.5.1) of locating on regulation support (110), the cover is equipped with sleeve (104.5.4) on stud (104.5.1), the bottom of stud (104.5.1) cooperatees and adjusts support (110) fixed connection through first lock nut (104.5.2) and second lock nut (104.5.3), the top of stud (104.5.1) is provided with stop nut (104.5.5).
4. An automatic switching valve according to claim 1, characterized in that: the valve plates (104.2.1) in the two valve bodies (104.1) are arranged vertically.
5. An automatic switching valve according to claim 1, characterized in that: a supporting frame (104.3.3) is arranged outside the top of the valve body (104.1), and the bottom of the rotating arm (104.3.1) is connected with the supporting frame (104.3.3) in a sliding mode.
6. An automatic switching valve according to claim 1, characterized in that: the connecting rod (104.3.2) comprises a connecting rod main body (104.3.21), telescopic thread sections (104.3.22) are arranged at two ends of the connecting rod main body (104.3.21), and the telescopic thread sections (104.3.22) are connected with the rotating arm (104.3.1) through movable joints (104.3.23).
7. An automatic switching valve according to claim 1, characterized in that: and a reinforcing rib (104.2.4) is arranged on one side surface of the valve plate (104.2.1).
8. An automatic switching valve according to claim 1, characterized in that: a plurality of waist-shaped holes are arranged on the adjusting bracket (110) at intervals along the length direction of the adjusting bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120740219.0U CN214946436U (en) | 2021-04-12 | 2021-04-12 | Automatic switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120740219.0U CN214946436U (en) | 2021-04-12 | 2021-04-12 | Automatic switching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214946436U true CN214946436U (en) | 2021-11-30 |
Family
ID=79045053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120740219.0U Active CN214946436U (en) | 2021-04-12 | 2021-04-12 | Automatic switching valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214946436U (en) |
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2021
- 2021-04-12 CN CN202120740219.0U patent/CN214946436U/en active Active
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