JP2013170634A - Valve installing/removing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve installing/removing apparatus helping install a valve on a tank easily.SOLUTION: A valve installing/removing apparatus 1 is an apparatus for helping install/remove a stop valve 6 on/from a mixing tank 3. The apparatus 1 includes a seat plate 11, a position adjusting mechanism 12 and a lifting mechanism 13. The seat plate 11 is so constituted as to be able to place the valve 6 on it. The position adjusting mechanism 12 is able to adjust the position of the plate 11 horizontally. The plate 11 can be lifted up/down by the lifting mechanism 13.

Description

  The present invention relates to a valve attaching / detaching device for attaching / detaching a valve to / from a tank provided in a chemical process device such as a reactor, a mixing dryer, and a filtration dryer.

  Chemical factories are equipped with chemical process equipment to perform processes such as reaction, mixing, filtration, or drying on liquids. In the chemical process equipment, the treatment is performed in a tank, and the liquid and the slurry generated by the treatment are discharged from an attachment nozzle at the lower end of the tank. Further, the mounting nozzle is provided with an opening / closing valve for opening / closing the nozzle, and for example, a Y-type flush valve is used as the opening / closing valve. This on-off valve can be mounted on the mounting nozzle by lifting it from the lower end of the tank and inserting it into the mounting nozzle. The on / off valve thus mounted is preferably cleaned periodically, and the on / off valve is cleaned by removing the on / off valve from the tank. Since the on-off valve is heavy, the on-off valve can be removed using a chain block as disclosed in Patent Document 1, for example.

JP 2008-133137 A

  The chain block is configured to lift the on-off valve by a hook suspended from above. The attachment nozzle is formed at the lower end of the tank, and when the lifted on-off valve is moved to the attachment nozzle, the hook hits the tank. Therefore, after the opening / closing valve is moved close to the mounting nozzle by the chain block, the operator must lift and insert the opening / closing valve into the mounting nozzle while adjusting the position of the opening / closing valve. However, since the on-off valve is heavy as described above, it is difficult to lift it while adjusting the position of the on-off valve.

  Then, this invention aims at providing the valve attaching / detaching apparatus which can attach a valve to a tank easily.

  A valve attaching / detaching device according to the present invention is a valve attaching / detaching device for attaching / detaching a valve to / from a tank, a mounting table for mounting the valve, a position adjusting mechanism for adjusting the position of the mounting table on a horizontal plane, And a lifting mechanism that lifts and lowers the table.

  According to the present invention, the valve placed on the mounting table by lifting the mounting table by the lifting mechanism can be lifted from the lower side of the tank. Further, the position of the valve placed on the mounting table can be adjusted by adjusting the position of the mounting table on the horizontal plane by the position adjusting mechanism before lifting and attaching the valve. As described above, since the position adjustment work for adjusting the valve position to the tank mounting position and the lifting work for lifting the valve can be performed by the valve attaching / detaching device, it is necessary for the worker to hold the valve in his / her hand and perform the work. The valve can be easily attached to the tank.

  The said invention WHEREIN: It is preferable to provide the rotating mechanism which rotates the mounting base mentioned above around the axis line orthogonal to the said horizontal surface.

  If the said structure is followed, a valve will be rotated to the surroundings of the axis line by rotating a mounting base, and the angle around the axis line of a valve can also be adjusted. As described above, since the angle adjusting operation for adjusting the angle around the axis of the valve can be performed by the valve attaching / detaching device, the valve can be further easily attached to the tank.

  In the above invention, the position adjustment mechanism includes a base fixed to the lifting mechanism so as to be movable up and down, and a plurality of ball casters provided on the base and supporting the mounting table, wherein the ball caster is It is preferable that the mounting table is configured to move on the horizontal plane.

  If the said structure is followed, since a mounting base moves on a ball caster, the initial stage load of a mounting base can be made small. Thereby, fine adjustment of the position of a valve can be performed easily.

  In the above invention, the mounting table has a recess formed on a lower surface thereof, and the ball caster supports the mounting table with a ball, and the ball is disposed in the recess. It is preferable.

  According to the above configuration, the operation range of the ball caster can be regulated by the concave portion, and when the mounting table is relatively moved, the mounting table is prevented from falling off the ball caster or interfering with other members. be able to.

  In the above invention, it is provided with an annular separation preventing plate that is positioned downward with respect to the mounting table and connected to the mounting table, and an outer peripheral edge portion of the base is formed between the separation preventing plate and the mounting table. It is preferable to arrange | position between.

  If the said structure is followed, it can prevent that a mounting base inclines with respect to a base, for example, and a mounting base remove | deviates from a base.

  The said invention WHEREIN: It is preferable to provide the fixing mechanism which is provided in the mounting base and fixes the said valve.

  If the said structure is followed, a valve can be fixed to a mounting base, and it is not necessary for an operator to press a valve to a mounting base at the time of valve position adjustment. Thereby, the operator who presses down a valve becomes unnecessary, and attachment / detachment work can be performed by a small number of people.

  In the above invention, it is preferable that a traveling mechanism provided on the lifting mechanism to travel the lifting device is provided.

  If the said structure is followed, a valve attachment / detachment apparatus can be moved to each tank, and a valve can be attached or detached.

  In the above invention, the tank is preferably a reactor tank subjected to glass lining processing.

  If the said structure is followed, since a valve can be attached to a tank in the state aligned correctly rather than before, it can prevent that a valve hits a tank strongly without intending at the time of mounting | wearing. Thereby, it can suppress that the glass lining layer formed by the glass lining process given to the tank is damaged at the time of mounting | wearing.

  According to the present invention, since the position of the valve can be adjusted and the valve can be lifted from the lower side, it can be easily attached to the tank.

It is a front view which shows the usage condition of the valve attachment / detachment apparatus of embodiment which concerns on this invention. It is an enlarged front view which expands and shows the state which contracted the valve attachment / detachment apparatus shown in FIG. It is an expanded sectional view which cuts and expands and shows the principal part of the valve attaching / detaching device shown in FIG. It is a top view which shows the state which looked at the position adjustment mechanism of the valve attachment / detachment apparatus shown in FIG. 2 from the top. It is an expanded sectional view which shows the state before valve mounting | wearing of the valve attaching / detaching apparatus shown in FIG. It is an expanded sectional view which shows a state when the position of a valve is adjusted with the position adjustment mechanism of the valve attachment / detachment apparatus shown in FIG.

  Hereinafter, a valve attaching / detaching device (hereinafter, also simply referred to as “attaching / detaching device”) 1 according to an embodiment of the present invention will be described with reference to the drawings described above. The concept of direction in the embodiment is used for convenience of description, and does not limit the direction. The attachment / detachment device 1 described below is only one embodiment of the present invention. That is, the present invention is not limited to the following embodiments, and additions, deletions, and changes can be made without departing from the spirit of the invention.

<Reactor>
In a chemical factory or the like, chemical plant equipment, for example, a reactor 2 as shown in FIG. 1 is provided. The reactor 2 is a device for mixing, dissolving, crystallizing, reacting, concentrating and suspending a liquid, and has a stirring tank 3 for storing the liquid and the slurry. The inner surface of the stirring tank 3 is subjected to a glass lining process to form a glass line layer, and a stirring blade 4 for stirring the liquid and slurry is provided therein. Moreover, the outer peripheral surface of the stirring tank 3 is covered with the jacket 5 except for the lower end and the upper end thereof, so that the liquid and slurry in the stirring tank 3 are heated or cooled by the medium flowing in the jacket 5. It has become. Furthermore, an attachment nozzle 3a is formed at the lower end of the agitation tank 3, and an opening / closing valve 6 is attached to the attachment nozzle 3a.

[Open / close valve]
The on-off valve 6 is a so-called Y-type flush valve, and discharges liquid and slurry in the agitation tank 3 through a discharge passage 7 formed therein. The on-off valve 6 is configured to open and close the discharge passage 7 with a valve body (not shown) to switch between discharging and stopping liquid and slurry.

  The configuration of the on-off valve 6 will be briefly described. The on-off valve 6 has a mounting portion 6a, a discharge portion 6b, and an on-off operation portion 6c. The mounting portion 6a is formed in a substantially cylindrical shape, and can be inserted into the mounting nozzle 3a for mounting. Further, a flange 6d is formed on the outer peripheral surface of the mounting portion 6a, and a flange 3b is formed at the opening end of the mounting nozzle 3a so as to correspond thereto. The mounting portion 6a is inserted into the mounting nozzle 3a so that the flange 6d abuts on the flange 3b of the mounting nozzle 3a, and the on-off valve 6 is fixed to the stirring tank 3 by fastening these flanges 6d and 3b. . A discharge portion 6b and an opening / closing operation portion 6c are arranged in a bifurcated shape at the lower end portion of the mounting portion 6a.

  The discharge part 6b is formed in a substantially cylindrical shape, and is integrally provided at the lower end of the mounting part 6a. The discharge portion 6b extends obliquely downward with respect to the axis of the mounting portion 6a, and the inner hole of the discharge portion 6b is connected to the inner hole of the mounting portion 6a to form the discharge passage 7. On the other hand, the opening / closing operation portion 6c is formed in a substantially cylindrical shape, and extends downward from the lower end of the mounting portion 6a so that the respective axes coincide with each other. The opening / closing operation part 6c accommodates therein a rod 6e for moving the valve body, and a handle 8 is provided at the lower end of the rod 6e. The handle 8 is formed in an approximately annular shape, and its shaft center is fastened to the rod 6e by a nut 8a. The on-off valve 6 configured as described above is configured such that when the handle 8 is rotated, the rod 6e moves forward and backward to move the valve body, and the discharge passage 7 is opened and closed.

  The on-off valve 6 configured in this way is lifted while adjusting its horizontal position so that the mounting portion 6a fits into the mounting nozzle 3a when mounting it on the stirring tank 3. And the mounting part 6a which lifted is inserted in the attachment nozzle 3a, and each flange 6d and 3b is faced | matched. Finally, the on-off valve 6 is attached to the agitation tank 3 by fastening the flanges 6d and 3b with bolts or the like. In such a mounting operation, the detachable device 1 according to the embodiment of the present invention is used. Below, the attachment / detachment apparatus 1 is demonstrated.

<Valve attachment / detachment device>
The valve attaching / detaching apparatus 1 is an apparatus for attaching / detaching the opening / closing valve 6 to / from the stirring tank 3, and includes a seat plate 11, a position adjusting mechanism 12, an elevating mechanism 13, and a traveling mechanism 14, as shown in FIG. ing.

[Seat]
The seat plate 11 serving as a mounting table is a plate-like member having a circular shape in a plan view made of a synthetic resin that has load resistance and can be reduced in weight, for example, vinyl chloride, and the opening / closing valve 6 is mounted thereon. It is configured to be able to be placed. As shown in FIG. 3, the seat plate 11 has a circular positioning recess 11a formed in a plan view around the axis L1 of the upper surface portion. The positioning recess 11a is configured such that the bottom of the handle 8 can be put in the positioning recess 11a and the on-off valve 6 can be placed upright, and the handle 8 placed therein is positioned by the positioning recess 11a. ing.

  Further, the seat plate 11 has a through hole 11b penetrating in the thickness direction of the seat plate 11 (vertical direction in the present embodiment) at the axial center, and the nut 8a is inserted therein. Yes. Further, four caster recesses 11 c are formed on the lower surface of the seat plate 11. The caster recesses 11c are formed in a circular shape in plan view, and are spaced apart from each other in the radial direction from the axial center and at equal intervals in the circumferential direction. The seat plate 11 thus configured is provided with a plurality of fixing mechanisms 15 on the upper surface thereof, and the lower surface thereof is supported by the position adjusting mechanism 12.

[Fixing mechanism]
The fixing mechanism 15 is a so-called toggle clamp, and is configured to fix the handle 8 disposed in the positioning recess 11a thereto. Four fixing mechanisms 15 are provided on the seat plate 11 in this embodiment liquid, and are arranged at equal intervals around the positioning recess 11a in the circumferential direction.

  The fixing mechanism 15 has a mounting base 16 fixed to the upper surface portion of the seat plate 11, and an arm 17 and a lever 18 are swingably attached to the mounting base 16. The arm 17 extends toward the center of the seat plate 11, and a clamp member 19 is attached to the tip portion thereof. The clamp member 19 extends downward from the arm 17, and the handle 8 of the on-off valve 6 is pressed against the seat plate 11 at a lower end portion of the clamp member 19 so as to be clamped. The clamp member 19 moves relative to the arm 17 in the longitudinal direction of the arm 17 (that is, the radial direction of the seat plate 11), and the position thereof can be adjusted. The arm 17 is connected to the lever 18 via the link 20. The lever 18 extends in a direction perpendicular to the arm 17, and the link 20 is rotatably attached to the arm 17 and the lever 18.

  In the fixing mechanism 15 configured as described above, when the lever 18 is tilted radially outward, the distal end side of the arm 17 is lifted by the link 20 and the clamp member 19 is lifted (see FIG. 5 described later). As a result, the handle 8 is released and can be detached from the seat plate 11. Further, when the lever 18 tilted outward in the radial direction is lifted, the distal end side of the arm 17 is lowered toward the seat plate 11 by the link 20 and the clamp member 19 is lowered. As a result, the handle 8 is pressed against the seat plate 11 by the clamp member 19 and clamped, and the handle 8 is fixed to the seat plate 11 by the fixing mechanism 15.

[Position adjustment mechanism]
As shown in FIGS. 3 and 4, the position adjustment mechanism 12 includes a substrate 21 and four ball casters 22. The board | substrate 21 is a flat plate-shaped member, and has the main-body part 21a and the four attachment parts 21b. The main body portion 21a is formed in an approximately octagonal shape, and the attachment portion 21b is integrally provided on each of four sides of the eight sides of the main body portion 21a, so that the side portions are not adjacent to each other. Are arranged one by one. Thereby, in the board | substrate 21, the attaching part 21b is mutually shifted | deviated 90 degree | times, and the notch part 21c is formed between the attaching parts 21b. The mounting portion 21b is disposed so as to correspond to the caster recess 11c of the seat plate 11, and is disposed so as to overlap the caster recess 11c in plan view as shown in FIG.

  Ball casters 22 are respectively provided on the upper surfaces of the mounting portions 21 b arranged in this manner, and the seat plate 11 is placed on the ball casters 22. That is, the seat plate 11 is supported by the four ball casters 22. More specifically, the ball caster 22 is attached to the attachment portion 21b so that the ball 22a is located on the upper side and the apex of each ball 22a is located on one horizontal plane. Further, the ball caster 22 is disposed so as to be located in the caster recess 11c of the seat plate 11, and the ceiling surface of the caster recess 11c is supported by the ball 22a.

  The position adjustment mechanism 12 configured as described above is configured such that the seat plate 11 placed thereon is supported by a ball caster 22 and the seat plate 11 can be moved on a horizontal plane. . Further, in the position adjusting mechanism 12, since the ball 22a is positioned in the caster recess 11c, it is possible to prevent the seat plate 11 from dropping from the ball 22a when moved. On the outer peripheral edge of the seat plate 11 that can be moved in this way, a separation preventing plate 25 is provided with a spacer 24 interposed therebetween.

[Leaving prevention plate]
The separation preventing plate 25 is a plate-like member that is formed in a generally annular shape, and is disposed so as to overlap the outer peripheral edge of the seat plate 11 in plan view. A plurality of spacers 24 are interposed between the separation preventing plate 25 and the seat plate 11, and the separation preventing plate 25 is disposed so as to be spaced downward with respect to the seat plate 11. Note that four spacers 24 are provided in the present embodiment, and are arranged at equal intervals in the circumferential direction. A bolt 26 is disposed so as to penetrate the separation preventing plate 25 and the spacer 24, and the separation preventing plate 25 and the seat plate 11 are fastened together via the spacer 24 by the bolt 26. The separation preventing plate 25 configured as described above is located below the outer edge portion of the mounting portion 21b of the substrate 21, and is caught by the mounting portion 21b when the seat plate 11 is lifted so that the seat plate 11 is separated from the substrate 21. It is designed not to come off.

  Further, the separation prevention plate 25 is provided with a stopper bolt 27 extending toward the substrate 21. The stopper bolt 27 is configured to advance and retract with respect to the substrate 21 by turning. The advancement of the stopper bolt 27 fixes the substrate 21 and the separation preventing plate 25 so that the seat plate 11 does not move relative to the substrate 21. Can be. On the contrary, by rotating the stopper bolt 27 to retract, the fixing of the substrate 21 and the separation preventing plate 25 is released, and the seat plate 11 can move relative to the substrate 21. Furthermore, the spacer 24 is disposed so as to be located on the radially outer side of each notch portion 21c of the substrate 21 in plan view. As a result, the seat plate 11 can be largely moved relative to the spacers 24, and the position of the on-off valve 6 can be adjusted over a wide range.

  In the seat plate 11 and the position adjusting mechanism 12, the ball caster 22 is smoothly formed in the ball caster 22 without being caught by the inner wall of the caster recess 11c by forming the caster recess 11c with a circular cross section. I can move. As a result, the seat plate 11 moves smoothly on the position adjusting mechanism 12, but when the substrate 21 hits against the spacer 24, the smooth motion of the seat plate 11 as described above is hindered.

  Therefore, in the seat plate 11, when the seat plate 11 is relatively displaced with respect to the substrate 21 by adjusting the inner diameter of the caster recess 11 c, the inner wall of the caster recess 11 c is the ball caster 22 before the spacer 24 contacts the substrate 21. It comes to hit. This prevents the smooth movement of the seat plate 11 from being hindered. Similarly, the inner diameter of the caster recess 11c is adjusted so that the inner wall of the caster recess 11c contacts the ball caster 22 before the lifter base 31 and the separation preventing plate 25, which will be described later, contact each other. 11 is prevented from being obstructed. The position adjusting mechanism 12 is fixed on the lifting mechanism 13 having the above-described lifter base 31.

[Elevating mechanism]
The elevating mechanism 13 is configured to elevate the seat plate 11 via the position adjusting mechanism 12. The elevating mechanism 13 has a lifter base 31, and the lifter base 31 is formed in a substantially square shape. The lifter base 31 has a flat upper surface, and the main body 21a of the substrate 21 is placed and fixed thereon. The substrate 21 is superimposed in plan view so that the center thereof substantially coincides with the center of the lifter base 31. The lifter base 31 configured as described above is rotatably provided at the upper end portion of the lifting mechanism main body 32. That is, the elevating mechanism 13 also has a function as a rotating mechanism that rotates the seat plate 11 via the position adjusting mechanism 12.

  As shown in FIG. 2, the elevating mechanism body 32 includes a base 33 and an extendable part 34. The base body 33 is generally formed in a bottomed cylindrical shape and extends in the up-down direction. An expansion / contraction part 34 is accommodated in the base 33. The expansion / contraction part 34 is configured to be expandable / contractible in the vertical direction (FIG. 1 is in an expanded state and FIG. 2 is in a contracted state), and a lifter base 31 is rotatably provided at an upper end portion thereof.

  If it demonstrates in detail, the expansion-contraction part 34 has the some shaft members 35-37 and the three shaft members 35-37 by this embodiment. The three shaft members 35 to 37 extend in the up-down direction and are substantially cylindrical. The first to third shaft members 35 to 37 having such a shape are inserted into the base body 33, the first shaft member 35, and the second shaft member 36 so as to be vertically movable. As a result, the first shaft member 35 advances and retreats in the base 33, the second shaft member 36 advances and retreats in the first shaft member 35, and the third shaft member 37 advances and retreats in the second shaft member 36. ing. A lifter base 31 is rotatably provided at the upper end of the third shaft member 37.

  The elevating mechanism 13 configured in this way is, for example, a wire type elevating mechanism, and the first to third shaft members 35 to 37 are advanced and retracted by winding or releasing a wire (not shown), so that the telescopic part 34 is retracted. Is designed to expand and contract. More specifically, the elevating mechanism 13 includes a drive unit 38. The drive unit 38 includes a wire, a winding unit 38a, and an operation handle 38b (not shown). The winding portion 38a is provided on the outer peripheral surface portion of the base body 33, and a wire (not shown) is wound around the winding portion 38a. An operation handle 38b is rotatably attached to the winding portion 38a, and the wire is wound around the winding portion 38a by turning the operation handle 38b, or conversely, the winding portion 38a is wound around the winding portion 38a. The wire is released. That is, by winding the wire around the winding portion 38a, the first to third shaft members 35 to 37 advance, the expansion / contraction portion 34 extends, and the lifter base 31 rises. Further, by releasing the wire, the first to third shaft members 35 to 37 are retracted, the expansion / contraction part 34 is contracted, and the lifter base 31 is lowered. The elevating mechanism 13 having such a function is provided with a traveling mechanism 14.

[Running mechanism]
The traveling mechanism 14 has a plurality of foot members 41. In the present embodiment, the traveling mechanism 14 has four foot members 41. The foot members 41 are arranged at equal intervals in the circumferential direction on the base body 33 and attached to the lower end portion of the base body 33 of the lifting mechanism 13 so as to be swingable in the vertical direction. The foot member 41 attached in this way extends outward in the radial direction from the base body 33, and a caster 42 is attached to the distal end portion thereof. The caster 42 is configured to be able to travel on the floor, the ground, or the like. Thereby, the attachment / detachment mechanism 1 can be moved by pushing or pulling it.

[Characteristics of valve attachment / detachment device]
In the attachment / detachment device 1 configured as described above, the opening / closing valve 6 is arranged near the center position of the seat plate 11 by forming the positioning recess 11 a in the seat plate 11. Thereby, it is possible to prevent the opening / closing valve 6 from being placed off the vicinity of the center position of the seat plate 11 and tilting and falling down of the detachable device 1. Further, by forming the caster recess 11 c in the seat plate 11, it is possible to prevent the seat plate 11 from falling off the ball caster 22, suppress the height of the detachable device 1, and reduce the weight of the seat plate 11. it can.

  Furthermore, since the clamp member 19 of the fixing mechanism 15 can adjust the position of the seat plate 11 in the radial direction, the position can be adjusted and fixed in accordance with the shape of the handle of the on-off valve 6. Further, by using a wire type lifting mechanism as the lifting mechanism 13, it is possible to realize a space saving and higher lifting height. Below, the procedure at the time of mounting | wearing the stirring tank 3 with the on-off valve 6 by the attachment / detachment apparatus 1 which has such a characteristic is demonstrated.

[Installation of on-off valve by valve attaching / detaching device]
In the valve mounting by the detachable device 1, first, the levers 18 of all the fixing mechanisms 15 are tilted so that the handle 8 of the on-off valve 6 can be inserted into the positioning recess 11a (see FIG. 5). Next, the handle 8 is placed in the positioning recess 11a and placed on the seat plate 11 so that the on-off valve 6 stands. Then, the levers 18 of all the fixing mechanisms 15 are lifted to fix the on-off valve 6 to the seat plate 11. After fixing, the attachment / detachment device 1 is moved using the traveling mechanism 14, and the on-off valve 6 is disposed under the attachment nozzle 3a.

  Next, the operation handle 38b of the drive unit 38 is turned to extend the expansion / contraction part 34, and the open / close valve 6 is raised to the vicinity of the attachment nozzle 3a. And the direction of the discharge part 6b is adjusted by rotating the seat board 11 around an axis line. After the adjustment, the stopper bolt 27 is turned to release the fixation between the substrate 21 and the separation preventing plate 25, and the seat plate 11 is moved relative to the position adjusting mechanism 12 to position the mounting portion 6a of the on-off valve 6 in the horizontal direction. Is finely adjusted (see FIG. 6). When the position of the mounting portion 6a is adjusted to a position where the mounting portion 6a can be mounted on the mounting nozzle 3a, the substrate 21 and the separation preventing plate 25 are fixed again by the stopper bolt 27, and then the seat plate 11 is raised again by the lifting mechanism 13. Then, the mounting portion 6a of the on-off valve 6 is inserted into the mounting nozzle 3a. Then, after raising the seat plate 11 until the flange 6d of the on-off valve 6 and the flange 3b of the mounting nozzle 3a are abutted, the operator 50 fastens the two flanges 6d and 3a. As a result, the opening / closing valve 6 is mounted on the agitation tank 3, and finally the mounting operation is completed by tilting the lever 18 of the fixing mechanism 15 and removing the opening / closing valve 6 from the attachment / detachment device 1.

  When the on-off valve 6 is removed, the position of the seat plate 11 is first finely adjusted so that the handle 8 enters the positioning recess 11a, and then the seat plate 11 is raised by the lifting mechanism 13 to position the handle 8. It puts in the recessed part 11a and mounts on the seat board 11. FIG. After mounting, the handle 8 is fixed by the fixing mechanism 15, and the fastening between the on-off valve 6 and the stirring tank 3 is released. Thereafter, the opening / closing valve 6 can be removed from the mounting nozzle 3 a of the stirring tank 3 by lowering the seat plate 11.

  As described above, the position adjusting operation for adjusting the position of the on-off valve 6 to the position at which the attaching / detaching device 1 can be inserted into the mounting nozzle 3a of the stirring tank 3 and the lifting operation for lifting the on-off valve 6 to the mounting nozzle 3a can be performed. . Therefore, it is not necessary for the operator 50 to perform these operations with the on-off valve 6 that is a heavy object, and the on-off valve 6 can be easily attached to the tank.

  Further, since the position adjustment work can be performed by the seat plate portion of the attachment / detachment device 1, it is not necessary for the operator to lift and lower the scaffold when performing fine adjustment at the time of valve installation, and the position adjustment can be easily performed. Therefore, the position can be adjusted accurately and safely.

  Further, since the position adjusting operation and the lifting operation can be performed by the attachment / detachment device 1, it is preferably used particularly in the reactor 2 subjected to the glass lining processing as described above. This is because the on-off valve 6 can be inserted into the mounting nozzle 3a and attached to the agitation tank 3 in a state in which these operations are more accurately aligned as compared with the case where the operator 50 performs these operations. Therefore, it is possible to prevent the on-off valve 6 from hitting the stirring tank 3 strongly at the time of mounting. Thereby, it can suppress that the glass lining layer formed by the glass lining process given to the stirring tank 3 is damaged at the time of mounting | wearing.

  In addition, since the attaching / detaching device 1 can also perform a direction adjusting operation (angle adjusting operation) for adjusting the direction of the discharge portion 6b of the opening / closing valve 6, the operator 50 holds the opening / closing valve 6 which is a heavy object and adjusts the direction. There is no need to perform work, and the on-off valve 6 can be easily attached to the tank.

  Furthermore, in the attachment / detachment device 1 of the present embodiment, the ball caster 22 supports the seat plate 11, and the seat plate 11 can move on the ball caster 22. Therefore, the initial load of the seat plate 11 can be reduced, and the position of the on-off valve 6 can be finely adjusted. In addition, in the detachable device 1, the opening / closing valve 6 can be fixed to the seat plate 11 by the fixing mechanism 15, so that the operator presses the opening / closing valve 6 against the seat plate 11 when adjusting the position of the opening / closing valve 6. There is no need to keep it. Thereby, the operator who presses the on-off valve 6 becomes unnecessary, and attachment / detachment work can be performed by a small number of people.

[Other Embodiments]
In the attachment / detachment device 1 of the present embodiment, the seat plate 11 is made of synthetic resin, but is not necessarily limited to synthetic resin and may be made of metal. Further, the positioning recess 11a is not necessarily formed, and the upper surface of the seat plate 11 may be flat. Further, the caster recess 11c formed in the seat plate 11 does not necessarily have a circular cross section, and may be an annular groove so as to connect all the caster recesses 11c. In this case, the seat plate 11 can be moved so as to rotate about the axis L <b> 1 with respect to the substrate 21, so that an elevating mechanism that does not rotate the lifter base 31 can be applied.

  Moreover, in the attachment / detachment device 1 of the present embodiment, the ball caster 22 is employed in the position adjustment mechanism 12, but the ball caster 22 is not necessarily required. For example, the upper surface portion of the substrate 21 may be reduced in friction like a sliding bearing, and the seat plate 11 may be directly placed on the upper surface portion of the substrate 21 to slide on the substrate 21. A linear guide may be provided in place of the ball caster 22. In this case, the position of the on-off valve 6 can be adjusted by moving the seat plate 11 in any direction by arranging the two linear guides in directions orthogonal to each other.

  Moreover, in the attachment / detachment apparatus 1 of this embodiment, although the toggle clamp is employ | adopted as the fixing mechanism 15, it does not necessarily need to be a toggle clamp. For example, it may be a system in which a clamp member is moved forward and backward simply by turning a screw and clamped, or a system in which a cover is mounted on the handle 8 from above.

  Further, in this embodiment, a wire type lifting mechanism is used as the lifting mechanism 13, but an air cylinder type or hydraulic cylinder type lifting mechanism may be used. Moreover, although the raising / lowering mechanism 13 uses the manual drive system which does not require wiring and has few restrictions on movement, you may use the electric drive system driven using a motor, a compressor, etc. In that case, it is preferable to provide a power supply unit such as a battery. Further, the traveling mechanism 14 provided in the lifting mechanism 13 is not necessarily required, and may be a structure that can be lifted and carried, and the traveling mechanism 14 may be electrically driven.

  Moreover, although this embodiment demonstrated attachment / detachment of the on-off valve 6 with which the reactor 2 was equipped, you may use for attachment / detachment of the on-off valve 6 of chemical plant apparatus, such as a mixing dryer and a filter dryer. Furthermore, although the stirring tank 3 subjected to the glass lining process has been described, it may be used for attaching and detaching the opening / closing valve 6 of the stirring tank 3 not subjected to the glass lining process. Furthermore, the attachment / detachment device 1 of the present embodiment is mainly intended to be used for attachment / detachment of the on-off valve 6, but does not exclude use for attachment / detachment of other configurations.

DESCRIPTION OF SYMBOLS 1 Detachable device 3 Stirrer tank 6 On-off valve 11 Seat plate 11c Caster recess 12 Position adjustment mechanism 13 Elevating mechanism 14 Traveling mechanism 15 Fixing mechanism 21 Substrate 22 Ball caster 25 Detach prevention plate

Claims (8)

A valve attaching / detaching device for attaching / detaching a valve to / from a tank,
A mounting table for mounting the valve;
A position adjusting mechanism for adjusting the position of the mounting table on the horizontal plane;
A valve attaching / detaching device, comprising: an elevating mechanism for elevating and lowering the mounting table.   The valve mounting / demounting device according to claim 1, further comprising a rotation mechanism that rotates the mounting table about an axis orthogonal to the horizontal plane. The position adjustment mechanism
A base fixed to the elevating mechanism so as to be movable up and down;
A plurality of ball casters provided on the base and supporting the mounting table;
The valve caster according to claim 1 or 2, wherein the ball caster is configured such that the mounting table moves on the horizontal plane. The mounting table has a recess formed on its lower surface,
The valve caster according to claim 3, wherein the ball caster supports the mounting table with a ball, and is arranged so that the ball is positioned in the recess. It is located below the mounting table and is provided with an annular detachment prevention plate connected to the mounting table.
The valve attaching / detaching device according to claim 3 or 4, wherein an outer peripheral edge portion of the base is disposed between the separation preventing plate and the mounting table.   The valve attaching / detaching device according to any one of claims 1 to 5, further comprising a fixing mechanism that is provided on the mounting table and fixes the valve.   The valve attaching / detaching device according to claim 1, further comprising a traveling mechanism that is provided in the lifting mechanism and causes the lifting device to travel.   The valve attaching / detaching device according to claim 1, wherein the tank is a tank of a reactor subjected to a glass lining process.

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