JP2016155338A - Mixer used for lance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily remove a mixture clogging a path for injecting water in a mixer for mixing the powders of a castable refractory with the water used for a maintenance device.SOLUTION: A mixer 6 is configured by setting connectable and separable a mixture tip side pipe 2 communicated with a tip side lance pipe 1 and a mixture hand-side pipe 4 communicated with a hand-side lance pipe 3 and the mixture tip side pipe 2, and characterized in that a plurality of water flow grooves 224 is provided in a mixture tip side end surface 223 facing the opposite side of the mixture tip side pipe 2 to extend from the inner peripheral surface of the mixture tip side pipe 2 to the outer peripheral surface, a water supply path is provided in the outer peripheral surface of the mixture tip side pipe 2 to supply water to the water flow grooves 224, and the mixture tip side pipe 2 or the mixture hand-side pipe 4 is brought into surface contact with an annular seal member 44 having a mixture tip side end surface 223 or a mixture hand-side end surface 414 provided to face the opposite side, and then connected.SELECTED DRAWING: Figure 2

Description

  The present invention relates to the water and the amorphous refractory powder used in a repair device for spraying a mixture of water and an amorphous refractory powder to a refractory repair site of various industrial furnaces such as a coke oven and an incinerator. It relates to a mixer.

  A repair device that sprays a mixture obtained by adding water to powder of an irregular refractory to the repair site of various furnaces such as a coke oven is equipped with a mixer that adds water to powder of an irregular refractory. It is provided between the pipe and the tip side lance pipe (Patent Document 1, Patent Document 2). The powder of amorphous refractory is mixed between the mixer and the open end of the lance pipe by water transporting the refractory powder through the hand side lance pipe to the mixer by spraying water onto the powder of the irregular refractory. , And sprayed as a mixture from the open end of the tip side lance pipe.

  Patent Document 1 discloses a mixer (water injection device) composed of an outer cylinder and an inner cylinder (Patent Document 1, [0079] [FIG. 2]). The mixer disclosed in Patent Document 1 forms a pressure equalizing chamber continuous in the circumferential direction between an outer cylinder and an inner cylinder, and a flow path of powder (material) of an indeterminate refractory from the pressure equalizing chamber. 12 through holes serving as water inlets inclined in the material conveying direction are provided at equal intervals in the circumferential direction (Patent Document 1, [0080]).

  Patent Document 2 discloses a mixer (joint) incorporating a ring-shaped nozzle having a plurality of 2 mmφ drill holes on the circumference (Patent Document 2, page 3, FIG. 2). Patent Document 2 proposes a configuration using a spray having an injection tube for spraying water in the form of a mist in place of a drill hole in order to reduce the particle diameter of water to be injected, using the mixer as a conventional technique. .

JP 2007-155215 A Japanese Utility Model Publication No. 58-183258

  Water and amorphous refractory powder are better mixed by tilting the water inlet or using a spray. However, if the distance from the mixer to the opening end of the tip lance pipe is short, the mixing state of water and powder of the irregular refractory becomes insufficient, and conversely the distance from the mixer to the opening end of the tip lance pipe If the length is long, the mixture may be stuck in the tip lance pipe, and the distance from the mixer to the opening end of the tip lance pipe is more important than the water injection state.

  The mixer disclosed in Patent Document 1 or Patent Document 2 has a problem that the mixture formed by mixing the powder of the irregular refractory into the water injection port or the spray clogs the water injection port or the spray. In particular, since the water injection port was formed as a through hole with a narrow inner diameter in order to reduce the particle shape of the water to be injected, the mixture tended to be clogged easily. In addition, when the mixture is solidified, there is no longer any means for eliminating clogging of the water injection port and the injection pipe, and replacement of the mixer has been forced.

  As described above, the mixing state of water and the powder of the irregular refractory can be improved by appropriately setting the distance from the mixer to the open end of the tip side lance pipe. On the other hand, when the mixture is clogged in the water inlet or the spray, there is no means for removing the mixture clogged in the water inlet or the spray, and the replacement of the mixer is forced. Therefore, water is jetted in the mixer of the water and the powder of the amorphous refractory used in the repair device for spraying a mixture of water and the powder of the amorphous refractory to the repair site of various furnaces such as a coke oven. A configuration that can easily remove the mixture clogging the channel was studied.

  As a result of the study, the water and amorphous refractory used in repairing equipment that sprays a mixture of water and powder of amorphous refractory onto the refractory repair site of various industrial furnaces such as coke ovens and incinerators. In the mixer with powder of the above, the mixer tip side pipe communicating with the tip side lance pipe, the hand side lance pipe and the mixer hand side pipe communicating with the mixer tip side pipe are configured to be freely separable In addition, a flowing water groove extending from the inner peripheral surface to the outer peripheral surface of the mixer front end side pipe or the mixer proximal side pipe is formed on the end surface facing one or both of the mixer front end side pipe or the mixer proximal side pipe. Provide a plurality of water supply passages for supplying water to the flowing water groove on the outer peripheral surface of one or both of the mixer tip side pipe or the mixer proximal side pipe, and the mixer tip side pipe or the mixer proximal side pipe is , By surface contact of the end surface facing the hand side, or a mixer, characterized in that connection by surface contact with each of the end face sealing material is interposed.

  The mixer according to the present invention is configured so that the powder of the amorphous refractory is conveyed from the proximal lance pipe to the distal lance pipe through the mixer proximal pipe and the mixer distal end pipe while the gas is being conveyed. And water is supplied between the mixer tip side pipes, and the powder of the said irregular refractory material and water are mixed. The mixer of the present invention does not supply water from the through hole extending from the inner peripheral surface to the outer peripheral surface of the mixer proximal pipe or the mixer distal pipe, but instead of the mixer distal pipe or the mixer proximal pipe. A water supply groove provided on an end surface facing one or both counterparts is closed with the other end surface or a sealing material to form a water supply hole, which is supplied through the water supply hole. The water supply hole can be easily removed even if the mixture is clogged in the water supply hole because the water supply groove is separated by separating the pipe on the mixer proximal side and the pipe on the tip side of the mixer and the flowing water groove becomes dewed.

  The running water groove only needs to extend from the inner peripheral surface to the outer peripheral surface of the mixer proximal side pipe or the mixer front end side pipe, and the extending direction is a straight line or a curved line, one or a plurality, In this case, the cross-sectional shape is free regardless of whether the circumferential intervals are equal. A preferred flowing water groove is a straight line extending in the radial direction of the cross section of the mixer proximal side pipe or the mixer front end side pipe, and a plurality of the flowing water grooves are provided at equal intervals in the circumferential direction. The cross-sectional shape is preferably a semicircular cross section without corners, but may be a triangular cross section or a quadrangular cross section as long as the cross section is not so small.

  The running water groove provided on the end surface of the mixer tip side pipe or the mixer proximal side pipe facing the other side of the mixer is connected to the end surface facing or the other side of the mixer tip side pipe or the mixer proximal side pipe. Sealed with sealing material. Here, in the case where a water flow groove is provided on the end surfaces of the mixer leading side pipe or the mixer proximal side pipe that face each other, a part or all of the opposed water flow grooves intersect at a part in the extending direction. The water supply holes are formed in the same extending direction. The sealing material only needs to have a flat surface that is in contact with the end surface provided with the water flow groove in order to block all the water flow grooves in the extending direction, and a separate seal material may be used for each of the water flow grooves. You may use the cyclic | annular sealing material which plugs up all the end surfaces which provided.

  The water supply path is formed by externally fitting the other end of the mixer front end pipe or the mixer proximal end pipe to one of the mixer front end pipe or the mixer proximal side pipe that the flowing water groove looks into, A water supply hose was connected to a closed space formed between one outer peripheral surface of the mixer proximal pipe and the other end peripheral surface of the mixer distal end pipe or the mixer proximal pipe. The other end of the mixer tip side pipe or the mixer proximal side pipe is externally fitted with a portion covering each of the flowing water grooves seen on one outer peripheral surface of the mixer leading side pipe or the mixer proximal side pipe, The parts that are collectively covered may be externally fitted, or may be externally fitted by covering all the flowing water grooves. The other end of the mixer tip side pipe or the mixer proximal side pipe covering all the running water grooves forms a closed space in an annular shape.

  The mixer of the present invention can easily remove the mixture clogged in the water jetting path. This is an end surface facing the other end of the mixer tip side pipe or the mixer proximal side pipe, the flowing water groove provided on the end surface facing the other end of the mixer tip side pipe or the mixer proximal side pipe, Or it is the effect by having closed with the sealing material to interpose and forming the water supply hole which supplies water. If the water supply hole is separated from the mixer front end pipe or the mixer proximal side pipe, the end face or the sealing material is released from the water flow groove, and the mixture remaining in the water flow groove can be easily removed.

  The flowing water groove is closed by the end face of the mixer tip side pipe or the mixer proximal side pipe or the sealing material to form a water supply hole. For this reason, like the conventional through-hole, it is not limited to a circular cross section and a straight line shape, and the degree of freedom in designing the extending direction of the running water groove, the cross sectional shape and the like is increased. This means that there is a high degree of freedom in design and processing, and in addition to reducing manufacturing costs or processing costs, the amount of water supplied and the state of jetting can be adjusted according to the direction in which the flow channel extends and the size of the cross-sectional shape. Provides the advantage of being adjustable.

  A water supply hose is connected to the closed space formed by externally fitting the mixer proximal pipe (or the mixer distal pipe) to the mixer distal pipe (or the mixer proximal pipe) that the running water peeks into. The water supply path is configured to supply water from the water supply hose to one or a plurality of water flow grooves through a closed space. In particular, when the closed space is connected to a plurality of water grooves, it is possible to supply water to the plurality of water grooves at once and uniformly. Also, the closed space can be easily formed by connecting the outer peripheral surface of the other inner surface to the inner peripheral surface of the mixer by connecting the mixer front end pipe and the mixer proximal side pipe. If it connects, the advantage that formation of a water supply path is easy is also acquired.

It is a perspective view showing the principal part near the front end of the hand side lance pipe which attached the mixer of this invention. It is the disassembled perspective view which looked at the principal part which isolate | separated the mixer, the front end side lance pipe, and the proximal side lance pipe from the front (front end side lance pipe side). It is the disassembled perspective view which looked at the main part which isolate | separated the mixer, the front end side lance pipe, and the proximal side lance pipe from back (hand side lance pipe side). It is the disassembled sectional view which isolate | separated the mixer front end side pipe and mixer front side pipe which comprise a mixer. FIG. 5 is an exploded cross-sectional view corresponding to FIG. 4 in which a water supply hose is connected to the water supply block of the mixer proximal pipe. It is sectional drawing showing the state which mixes the powder of amorphous refractory material, and water in a mixer.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. 1 to 5, the mixer 6 to which the present invention is applied has a configuration in which a metal mixer tip side pipe 2 and a mixer hand side pipe 4 are connected, and the mixer tip side pipe 2 A metal tip lance pipe 1, a mixer proximal pipe 4 with a metal proximal lance pipe 3, and a water supply block 43 of the mixer proximal pipe 3 with a metal (resin or rubber) A) water supply hose 5 is connected. The lance is composed of a distal lance pipe 1 and a proximal lance pipe 3, and the mixer 6 is interposed between the distal lance pipe 1 and the proximal lance pipe 3. The powder R of the irregular refractory that is conveyed by gas through the hand side lance pipe 3 is mixed with the water W supplied through the water supply hose 5 by the mixer 6 and injected from the tip side lance pipe 1 as a mixture M ( See FIG. 6 below).

  The mixer tip side pipe 2 includes a lance tip side insertion pipe line 21 having a hexagonal nut-like appearance, and a mixer tip side connection pipe line 22 to which the mixer proximal side pipe 4 is connected. The mixer front end side pipe 2 of this example forms steps on the inner peripheral surface side of the lance front end side insertion conduit 21 and on the outer peripheral surface side of the mixer front end connection conduit 22. The step on the inner peripheral surface side formed in the lance tip side insertion pipe line 21 forms a lance tip side end surface 213 that abuts the tip side lance pipe 1 to be inserted, and the tip side lance pipe 1 becomes the lance tip side end surface 213. By abutting, the insertion length of the tip side lance pipe 1 with respect to the lance tip side insertion pipe line 21 is specified. Further, the step on the outer peripheral surface side formed in the mixer front end side connection pipe line 22 is a watertight O-ring 23 between the mixer front end side connection external thread 222 provided on the mixer front end side outer peripheral surface 221. Is attached.

  The lance tip side insertion pipe line 21 is a tubular portion comprising an inner peripheral surface having an inner diameter equal to the outer diameter of the connected tip side lance pipe 1 and six outer peripheral surfaces in the form of a hexagonal nut. Of the six outer peripheral surfaces, one lance tip side fixing screw hole 211 extending from the inner peripheral surface to the outer peripheral surface is provided on each of the upper and lower four surfaces. The tip-side lance pipe 1 to be inserted is fixed in position by four lance tip-side fixing screws 212 screwed from the outer peripheral surface side through the respective lance tip-side fixing screw holes 211, and is connected to the mixer tip-side connecting conduit 22. Communicate with. The tip side lance pipe 1 only abuts against the lance tip side end surface 213 formed on the inner peripheral side of the lance tip side insertion pipe line 21 and the mixer tip side connection pipe line 22, but improves water tightness. Therefore, an O-ring or packing may be interposed between the tip side lance pipe 1 and the lance tip side end surface 213.

  The mixer leading end side connecting pipe line 22 has six flowing water grooves in the mixer leading end side end surface 223 that abuts against the annular sealing material 44 interposed between the mixer proximal side pipe 414 and the mixer proximal end face 414. 224 are provided at equal intervals in the circumferential direction. The annular sealing material 44 is a resin or rubber sealing material having an annular plane whose width is equal to or greater than the length of the flowing water groove 234. The flowing water groove 224 in this example is a straight groove having a square cross section, and extends from the inner peripheral surface to the outer peripheral surface in the radial direction of the mixer distal end side connecting conduit 22. Further, the mixer tip side connection pipe line 22 is provided with a mixer tip side connection male screw 222 on the mixer tip side outer peripheral surface 221. A connecting O-ring 23 is externally fitted between the step between the lance tip side insertion pipe line 21 and the mixer tip side connection pipe line 22 and the mixer tip side connection male screw 222.

  The mixer proximal pipe 4 includes a lance proximal connection pipe 41 and a lance proximal insertion pipe 42 having a hexagonal nut-like appearance. The mixer proximal side pipe 4 of this example is provided with a water supply block 43 that is continuous with the outer peripheral surfaces of the lance proximal side connecting pipe 41 and the lance proximal side inserting pipe 42. In addition, the mixer proximal pipe 4 of this example is provided with a protrusion on the inner peripheral surface at the boundary between the lance proximal connection pipe 41 and the lance proximal insertion pipe 42, and on the lance proximal connection pipe 41 side. A lance proximal side end surface 423 is formed on the mixer proximal side end surface 414 and the lance proximal side insertion pipe line 42 side. The lance proximal side end surface 423 contacts the end surface of the proximal lance pipe 3 to be inserted, and specifies the insertion length of the proximal lance pipe 3 with respect to the lance proximal side insertion conduit 42.

  The lance hand side connection pipe line 41 has a hexagonal nut-like appearance from the outer peripheral edge of the mixer hand side end face 414 and has a larger inner diameter than the outer diameter of the mixer front end outer peripheral face 221 of the mixer front end pipe 2. It has a container side inner peripheral surface 412. The mixer proximal side inner peripheral surface 412 is provided with a connecting female screw 413 that is screwed into the mixer leading end connecting male screw 222 of the mixer leading end side pipe 2. Further, the lance proximal side connecting pipe 41 is provided between the mixer distal end outer peripheral surface 221 and the mixer proximal side inner peripheral face 412 of the inserted mixer distal end connecting pipe 22, and the mixer leading end side An annular closed space 416 communicating with the flowing water groove 224 provided on the end surface 223 of the connecting pipe 22 on the tip side of the mixer is formed. The annular closed space 416 communicates with the water supply hose connection hole 431 in the water supply block 43 through a communication hole 415 penetrating the lance proximal side connection pipe line 41.

  The lance proximal-side insertion pipe line 42 is a tubular portion comprising an inner peripheral surface having an inner diameter equal to the outer diameter of the proximal lance pipe 3 to be connected and six outer peripheral surfaces having a hexagonal nut-like appearance. Of the six outer peripheral surfaces, one lance proximal side fixing screw hole 421 extending from the inner peripheral surface to the outer peripheral surface is provided on each of the upper and lower four surfaces. The hand side lance pipe 3 to be inserted is fixed in position by four lance hand side fixing screws 422 screwed from the outer peripheral surface side through the respective lance hand side fixing screw holes 421, and is connected to the lance hand side connecting pipe 41. Communicate. The lance pipe 3 on the proximal side only abuts against the step on the inner peripheral side of the lance proximal side connecting pipe 41 and the lance proximal side insertion pipe 42, but an O-ring is interposed in order to improve water tightness. May be.

  The water supply block 43 is a metal block provided over the outer peripheral surfaces of the lance hand side connection pipe line 41 and the lance hand side insertion pipe line 42, and a water supply hose connection hole 431 extending from the back surface to the inside and an intermediate portion extending from the upper surface to the inside. A release hole 432 is provided. The water supply hose connection hole 431 is provided with a female screw on the inner peripheral surface, and a male screw provided on the outer peripheral surface of the water supply hose 5 is screwed to removably connect the water supply hose 5. Further, the water supply hose connection hole 431 is connected to the intermediate release hole 432 inside, and is also connected to a communication hole 415 penetrating the lance proximal side connection pipe line 41.

  The intermediate release hole 432 is directly above the communication hole 415, and is normally closed by screwing the release hole closing bolt 433 into a female screw provided on the inner peripheral surface. When the mixture M is clogged in the series of through holes 415, the release hole closing bolt 433 is removed to eliminate clogging of the communication holes 415. If it is not necessary to eliminate clogging, the intermediate release hole 432 and the release hole closing bolt 433 may be omitted. The water supply hose 5, the water supply hose connection hole 431, the communication hole 415, and the annular closed space 416 form a water supply path connected to the water supply hole formed by the water flow groove 224 and the annular seal material 44.

  The flowing water groove 224 is formed between the mixer tip side outer peripheral surface 221 and the mixer handle side inner peripheral surface 412 of the mixer handle side pipe 4 when the mixer tip side pipe 2 and the mixer handle side pipe 4 are connected. Everything communicates with the annular closed space 416. The annular closed space 416 communicates with the water supply hose connection hole 431 of the water supply block 43 through the communication hole 415 provided in the lance proximal connection pipe 41. Accordingly, the water supplied from the water supply hose 5 connected to the water supply hose connection hole 431 is supplied to all the water flow grooves 224 through the water supply hose connection hole 431, the communication hole 415, and the annular closed space 416.

  As shown in FIG. 6, the mixer 6 of the present invention is indeterminately conveyed by gas from the proximal lance pipe 3 to the distal lance pipe 1 through the mixer proximal pipe 4 and the mixer distal pipe 2. Refractory powder R and water supplied from the water supply hole formed from the water flow groove 224 and the annular sealing material 44 of the mixer end surface 223 through the water supply hose connection hole 431 and the communication hole 415 from the water supply hose 5. W is mixed and the mixture M is sprayed from the tip side lance pipe 1. The function as the mixer 6 is the same as that of the conventional type. For this reason, the state of the supplied water W can also be adjusted by adjusting the cross-sectional shape and cross-sectional area of the flowing water groove 224.

  The difference between the present invention and the prior art is that the water supply hole for supplying water W is separated by the separation of the mixer front end side pipe 2 and the mixer proximal side pipe 4 (see FIG. 5). The mixture M is separated and the clogged mixture M can be easily removed. Further, in the mixer 6 of this example, the water supply hose connection hole 431 and the communication hole 415 constituting the water supply path are also easily removed by removing the release hole closing bolt 433 from the intermediate release hole 432. Can be removed. As described above, the mixer 6 of the present invention can easily remove the mixture M at a portion where the previously-mixed mixture M could not be removed.

1 Tip side lance pipe 2 Mixer tip side pipe
21 Lance tip side insertion pipe
213 Lance tip end face
22 Mixer tip side connection pipe
221 Mixer tip side outer peripheral surface
223 Mixer front end face
224 running water ditch
23 Connecting O-ring 3 Hand side lance pipe 4 Mixer hand side pipe
41 Mixer hand side connection pipeline
412 Inner peripheral surface of mixer side
414 Mixer hand side end face
415 communication hole
416 Annular enclosed space
42 Lance hand side insertion pipe line
423 Lance hand side end face
43 Water supply block
431 Water supply hose connection hole
432 Intermediate release hole
433 Release hole closing bolt
44 Annular sealing material 5 Water supply hose 6 Mixer W Water R Indefinite refractory powder M Mixture

Claims (2)

In a mixer of water and amorphous refractory powder used in a repair device for spraying a mixture of water and amorphous refractory powder onto a refractory repair site of various industrial furnaces such as a coke oven or an incinerator,
The mixer front end side pipe communicating with the front end side lance pipe and the proximal side lance pipe and the mixer proximal side pipe communicating with the mixer front end side pipe are configured to be freely separable,
One or a plurality of running water grooves extending from the inner peripheral surface to the outer peripheral surface of the mixer tip side pipe or the mixer proximal side pipe are provided on the end surface facing one or both of the mixer tip side pipe or the mixer proximal side pipe. ,
On the outer peripheral surface of one or both of the mixer front end side pipe or the mixer proximal side pipe, a water supply path for supplying water to the flowing water groove is provided,
The mixer tip-side pipe or the mixer proximal-side pipe is connected with the end face facing the other side being in contact with each other or with the sealing material interposed between the end faces being connected. The water supply path is formed by externally fitting the other end of the mixer front end pipe or the mixer proximal end pipe to one of the mixer front end pipe or the mixer proximal side pipe that the flowing water groove looks into, 2. A water supply hose is connected to a closed space formed between one outer peripheral surface of the mixer proximal pipe and the other end peripheral surface of the mixer distal end pipe or the mixer proximal pipe. The mixer described.

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