Rotary drum type processing machine equipped with movable sheath plate

Abstract

To provide a novel rotary drum type processing machine capable of easily carrying out an opening / closing operation of a weir from an outside position closest to an outlet hood with a simple constitution, when an opening / closing mechanism of the weir is provided in the outlet hood covering a discharge port of a rotary drum.SOLUTION: A rotary drum type processing machine D is characterized such that: a fixed weir 7 constituting a weir structure 6 is provided on an end edge of a discharge port 16, the fixed weir 7 has an appropriately cut-off adjustment opening 71, and a movable weir 8 is provided in the adjustment opening 71; and the movable weir 8 is provided with a movable weir plate 81 rotating with a rotary drum 1 and the movable weir plate 81 is caused to move to open the adjustment opening 71 to adjust a takeout amount of a processing object W having been processed in the rotary drum 1, and an operator carries out an opening / closing operation of the movable weir plate 81, accessing from outside of an outlet hood 12, and the movable weir plate 81 is maintained in an opened state relative to the fixed weir 7.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a rotary drum type processing machine such as a rotary drum type dryer, and in particular to a novel rotary drum type processing machine in which a discharge port formed at the discharge end of the rotary drum is opened and closed by a movable dam plate, and this opening and closing operation is made easy. [Background technology]

[0002] For example, a rotary drum type dryer D is known as one of the rotary drum type processing machines. As shown in Figure 1 as an example, this rotary drum type dryer D comprises a cylindrical rotary drum 1 and an agitator 2 installed inside the rotary drum 1. The material W to be treated is placed inside the drum and subjected to kiln action, crushed and agitated by the agitator 2, and then exposed to hot air, gradually becoming a fine product (dried product) W1.

[0003] Conventionally, as shown in FIG. 7, a weir structure 6' is provided at the discharge outlet 16' (discharge side end 16E') of the rotating drum 1', and the amount of the workpiece W retained in the rotating drum 1' (retention amount) and the discharge amount of the product W1 are adjusted by adjusting the height of the weir (blockage height). That is, the conventional weir structure 6' is a structure in which, for example, rectangular plates or blocks (referred to as weir height adjustment blocks B) having appropriate height dimensions are stacked and fixed in an appropriate number in the radial direction (height direction) of the rotating drum 1', thereby adjusting and changing the weir height. Here, the weir height adjustment blocks B are divided into multiple stages in the radial direction, for example, and the necessary number of stages are removed from the center of the drum depending on the discharge (delivery) of the product W1. Furthermore, each divided weir height adjustment block B is often attached at two points on both the left and right sides using a bolt and nut structure, as shown in Figure 7 above. For convenience, Figure 7 above shows the weir height adjustment block B for only one location at the discharge outlet 16'.

[0004] Furthermore, as also shown in Figure 7 above, the discharge outlet 16' (discharge side end 16E') of the rotating drum 1' is entirely covered by the outlet hood 12. Therefore, to adjust the height of the weir, the rotation of the rotary drum dryer D' must first be stopped, and after the dryer has cooled, a worker (operator) must enter the dryer (inside the outlet hood 12) and manually adjust the height of the weir, that is, manually attach or remove the weir height adjustment block B (for example, by screwing it in place with bolts). However, this procedure has the following problems.

[0005] First, the work space is covered by the outlet hood 12, making it a nearly closed space, which can easily become hot and humid, and also requires work lights to illuminate the area, making it a harsh working environment. Particularly on product production lines, when changing products, it is necessary to remove all of the products trapped inside the rotating drum 1', and in that case, all of the gate height adjustment blocks B must be removed, which takes a lot of time and effort. Another problem is that the temperature inside the dryer is usually between 150°C and 200°C, and it takes a considerable amount of time for the temperature to cool down; for example, work cannot be carried out until the temperature drops to 70°C. Furthermore, since the working space is a substantially closed space as described above, the oxygen concentration is lower than atmospheric pressure, and the possibility of oxygen deficiency must be taken into consideration. Furthermore, since workers would be entering the dryer, it was necessary to shut off all related power sources for safety reasons, such as by turning off the circuit breaker. Furthermore, if the workpiece W contains harmful substances, appropriate safety measures must be taken depending on the substances contained, and there is also the problem that workers cannot easily enter the inside.

[0006] For this reason, attempts have been made to enable the opening and closing of the weir and outlet (discharge port) from outside the rotating drum (see, for example, Patent Documents 1 and 2). However, in Patent Document 1, the drum and the weir do not rotate as a single unit, and so a gap is formed between them, raising concerns that the material to be treated may leak from this gap. On the other hand, in Patent Document 2, the drum and weir rotate as a single unit, and no gap is formed between them, but the structure for opening and closing the weir is extremely complicated, which inevitably increases costs, and maintenance in the event of a problem requires a considerable amount of time and effort. Furthermore, because Patent Document 2 uses threaded rods and gears, if fine powder is generated from the material to be treated, it can get into the screws and gears and cause problems, so the types of material that can be treated with this device are limited. Furthermore, the mechanism of Patent Document 2 utilizes a lid body that is close to the entire circumference of the rotating drum, and opens and closes the outlet and the lid body all at the same time.It is a mechanism designed for the purpose of always discharging the processed material uniformly while the drum is rotating, and therefore is not a mechanism that can respond to subsequent requests such as discharging at a specific timing during one rotation of the drum. For these reasons, the present applicant has proposed a structure that allows the weir structure to be simply opened and closed from the outside of the drum, more specifically, from the outside of the outlet hood, and has already obtained a patent for this (see, for example, Patent Document 3). This method has significantly improved the inconveniences of the past, but on the other hand, even if the opening and closing mechanism is located inside the outlet hood, a simple mechanism that can be opened and closed from a position very close to the outside of the outlet hood has a great advantage in terms of maintenance, and the development of such a mechanism has been desired. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 3885629 (JP Patent Publication No. 2003-279251) [Patent Document 2] Special Publication No. 1-17657 [Patent Document 3] Patent No. 6629043 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention was made in recognition of this background, and its technical objective was to develop a new rotating drum type processing machine that has a simple configuration and allows the weir to be easily opened and closed from a position very close to the outside of the outlet hood, even when a weir opening and closing mechanism is provided inside the outlet hood that is installed to cover the discharge outlet of the rotating drum. [Means for solving the problem]

[0009] That is, the rotary drum type processing machine with a movable dam plate according to claim 1 is as follows: A rotary drum type processor in which materials to be treated are placed in a rotary drum, and while the materials are raised and agitated as the rotary drum rotates, the materials are subjected to appropriate processing, and the materials are transported from the inlet of the rotary drum to the outlet, and then transported into an outlet hood fixedly installed so as to cover the outlet, The rotating drum has a fixed weir that constitutes a weir structure and is provided in the shape of an inner flange on the edge of the discharge port side, and the fixed weir has an adjustment opening portion that is appropriately cut out, and a movable weir that constitutes the weir structure is provided in this adjustment opening portion, This movable weir is equipped with a movable weir plate that rotates together with the rotating drum, and by moving this movable weir plate, the adjustment opening section is opened appropriately to adjust the amount of material that has been processed in the rotating drum and is removed.The movable weir plate is opened and closed by an operator who accesses it from outside the outlet hood, and the movable weir plate is configured to maintain an open state relative to the fixed weir.

[0010] The rotating drum type processing machine having a movable dam plate according to claim 2 satisfies the requirements of claim 1, as well as: The movable dam plate is characterized in that a hinge is provided on the rear edge facing the adjustment opening portion in the direction of drum rotation, and the free end side of the other edge is configured to be able to rotate toward the back side of the rotating drum.

[0011] The rotary drum type processing machine having a movable dam plate according to claim 3 has, in addition to the requirements of claim 1 or 2, The opening, closing, and fixing of the movable dam plate is performed via a shift device, and the opening and closing operation of the movable dam plate using this shift device is characterized in that an operator outside the outlet hood inserts the tip of the shift device into the outlet hood through an inspection hatch provided on the side of the outlet hood, and manually operates the shift device to open and close the movable dam plate.

[0012] The rotary drum type processing machine having a movable dam plate according to claim 4 has, in addition to the requirements of claim 1 or 2, The movable dam plate is configured as a unit including a slide base plate that moves in the longitudinal direction of the rotating drum on the outer surface of the rotating drum, a dam action plate that is provided in a rising shape from one end of the slide base plate, and a discharging plate that is inclined in plan view and is supported in a rising shape from the dam action plate on the back side of the rotating drum, This unit is characterized in that when the unit is closed, the dam action plate closes the adjustment opening section, while when it is opened, the dam action plate moves away from the adjustment opening section, opening the adjustment opening section, and the discharge plate moves to face the back side of the adjustment opening section. The above problems are solved by the means described in each claim. [Effects of the Invention]

[0013] First, according to the invention described in claim 1, when opening or closing the movable dam plate, the worker accesses it from outside the outlet hood and opens or closes it. In other words, the worker himself is outside the outlet hood and places only the opening and closing tool (jig) or only the upper half of his body, such as his arms, inside the outlet hood to open or close the movable dam plate. Therefore, compared to when the worker places his entire body inside the outlet hood to perform opening and closing operations or maintenance work, the number of body parts that enter the outlet hood (for example, parts that come into contact with heat or the dried product in the drying process) can be minimized, and the opening and closing operations can be performed safely. Also, if the dryer (inside the outlet hood) is kept under negative pressure during operation, the work space is replaced with air, shortening the cooling time and allowing workers to perform opening and closing operations and maintenance work with much less effort than if they had to enter the interior completely.Furthermore, workers can operate only the movable gate plates they deem necessary.

[0014] According to the invention described in claim 2, the movable dam plate is provided with a hinge at the rear edge in the drum rotation direction, and is configured like a single-wing door with this hinge as the pivot point. Therefore, when opening the movable dam plate, it is not necessary to completely detach the movable dam plate from the fixed dam, and the number of parts can be reduced, resulting in a lighter weight. Furthermore, when the movable dam plate opened at the bottom of the rotating drum moves with the rotation of the rotating drum, the hinge is positioned at the bottom of the movable dam plate, that is, the movable dam plate acts as a chute with an upwardly open state, and products falling from the lifter can be actively guided from the discharge port (adjustable opening section) to the outside of the rotating drum (inside the outlet hood). In this way, even if the opening and closing mechanism of the movable dam plate is configured inside the outlet hood, a structure (structure with a feeding function) that makes it easy to dispense products without the operator having to enter completely inside the outlet hood can be realized. In general, in rotating drum-type processors, the weir at the discharge port is a plate-shaped one attached to the discharge side of the drum in the longitudinal direction. Therefore, when the weir is removed and the drum is rotated, only the amount of product inside the drum that flows according to its angle of repose is discharged, and most of the time, no active feeding function (discharging function) is provided. As a result, it took a relatively long time to discharge the product, but in the present invention, the movable weir plate can function as a product discharge (feeding function), so the discharge time (discharging time) can be shortened. The time-saving effect is particularly great when discharging the entire amount to empty the drum.

[0015] According to the invention of claim 3, the movable dam plate is opened and closed by inserting a shift device, which is an opening and closing tool, through an inspection hatch provided on the side of the outlet hood. This eliminates the need for hand tools (such as wrenches) to open and close the movable dam plate, and eliminates the risk of dropping the hand tools. In addition, the worker can open and close the movable dam plate without having to enter the dryer. During maintenance work or when changing the entire amount, it may be necessary to remove all of the materials (products) remaining in the rotating drum. However, since the movable gate plate can be opened and closed with almost no need for workers to enter the dryer, the opening and closing of the movable gate plate can be done more safely and quickly, and maintenance work can be carried out quickly.

[0016] Furthermore, according to the invention described in claim 4, the movable weir plate is configured as a unit comprising a slide base that moves in the longitudinal direction (axial direction) of the rotating drum, a weir action plate that stands upright from one end of the slide base, and a dispensing plate that is inclined in plan view and stands upright from the weir action plate on the rear side of the rotating drum; when opening, the weir action plate moves away from the adjustment opening section, opening the adjustment opening section, and the dispensing plate faces the rear side of the adjustment opening section, so that a movable weir plate configuration that is not a single-opening type can be specifically realized. [Brief explanation of the drawings]

[0017] [Figure 1] 1A is a skeletal side cross-sectional view of a rotary drum dryer, which is an example of the rotary drum processing machine of the present invention, and FIG. 1B is a front cross-sectional view thereof, and FIG. 1C is a perspective view showing an example of a weir structure applied to the rotary drum dryer. [Figure 2] 1A is a front view of a rotary drum dryer viewed from the outlet hood side, FIG. 1B is a side view thereof, and FIG. 1C is a plan cross-sectional view thereof. [Figure 3] This is an example of a configuration in which a movable weir plate in a weir structure is opened, closed, and fixed using a pantograph jack, and shows a plan view (a) showing the movable weir plate in a closed state, and a plan view (b) showing the movable weir plate in a state where it is almost fully opened. [Figure 4]FIG. 1A is an exploded oblique view showing a movable dam plate unit comprising a slide base that slides longitudinally on the outer surface of the rotating drum, a dam action plate that is erected at the end of the discharge outlet relative to the slide base and can close the adjustment opening section, and a discharge plate that is erected at an angle in plan view on the rear side of the dam action plate; FIG. 1B is a plan cross-sectional view showing the state in which the adjustment opening section is closed by the movable dam plate unit; FIG. 1C is a plan cross-sectional view showing the state in which the adjustment opening section is open; and FIG. 1D is a side cross-sectional view showing the state when the rotating drum is rotated 90 degrees from the open state in FIG. 1C. [Figure 5-1] This is an example of a configuration in which a movable dam plate configured like a single-wing door is fixed with a bolt / nut structure, and includes a front view (a) of the discharge outlet side end of the rotating drum showing how the movable dam plate in the closed state is fixed with an eye nut, a plan view (b), a cross-sectional view (c) along line AA in Figure (a), and an oblique view (d) showing the open-state fixing piece. [Figure 5-2] This is a front view (a) of the discharge outlet end of the rotating drum showing how the movable dam plate in the open state is fixed with an eye nut, a plan view (b), and a cross-sectional view (c) along line BB in Figure (a). [Figure 6] This is an example of a configuration in which a single-wing movable dam plate is opened and closed using a cam structure, and shows a front view (a) of the movable dam plate in a closed state, a plan view (b), and a plan view (c) of the movable dam plate in an open state. [Figure 7] FIG. 1 is a perspective view showing a conventional weir structure in which a height adjustment block is provided at the discharge port of a rotating drum to adjust and change the height of the weir (blocking height). DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention may be embodied in various ways within the scope of the present invention, including the following examples, which may be further improved within the scope of the present invention. For example, a conventional weir height adjusting block B may be used in combination with the present invention, if necessary. [Example]

[0019] The present invention will be specifically described below based on the illustrated embodiments. The description will begin with a rotary drum dryer D, which is an example of a rotary drum processing machine, and then the weir structure 6 will be described. For ease of illustration, the movable weir plate 81 may be shown in only one location relative to the discharge port 16, or in multiple locations.

[0020] 1(a) and 1(b), for example, a rotary drum dryer D comprises a cylindrical rotary drum 1 and an agitator 2 provided within the rotary drum 1. The input side of the rotary drum 1 (the input side of the material W to be treated) is provided with a hot air inlet 3 for sending hot air into the rotary drum 1 and a feed hopper 4 for supplying the material W to be treated into the rotary drum 1. The discharge side of the rotary drum 1 is provided with a product screw 5 for removing the material W to be treated that has become the product W1, and a weir structure 6 according to the present invention. Examples of the material to be treated W include sludge, livestock excrement (chicken droppings), and fruit (tangerine) pomace. In this specification, the material obtained by subjecting such material to treatment W to appropriate treatment is referred to as product W1, and in this case, the dried product is the product W1. Each component of the rotary drum dryer D will be further described below.

[0021] First, the rotating drum 1 will be described. The rotating drum 1 comprises a drum body 10 rotatably supported on a fixed support member F (see FIG. 2). The drum body 10 can be given a gentle downward slope from the side where the material W is fed to the drum body 10 toward the side where the product (dried product) W1 is discharged. The discharge side of the drum body 10 is covered with an outlet hood 12 (see FIG. 7 above), and the product screw 5 is provided at the bottom within the outlet hood 12 (see FIG. 1(a)). An exhaust gas outlet 13 is formed at the top of the outlet hood 12, and the hot air sent in from the hot air inlet 3 is discharged from the exhaust gas outlet 13 after it has finished its function (here, drying function) within the drum body 10. Here, reference numeral 31 in the figure denotes a hot air guide plate provided on the input side to efficiently transport the hot air from the hot air inlet 3 into the drum body 10. It is preferable that the inside of the wall that constitutes the outlet hood 12 is lined with heat insulating material, as shown in Figure 2(c) as an example, to prevent sudden temperature changes from occurring to the dried product W1.

[0022] As shown in FIG. 1, the inner peripheral surface of the rotary drum 1 is provided with lifters 14 that protrude into the inside of the drum, and the lifters 14 will be described below. The lifter 14 carries (lifts) the material W fed into the drum body 10 from the bottom to the top of the inner periphery of the drum, and is formed in an upright position extending from the inner periphery of the drum toward the center, as shown in Figure 1(b) as an example. The tip of the lifter 14 facing the center of the drum is appropriately bent so that the material W lifted up by the lifter 14 is dropped from the top of the inner drum to approximately the same position (agitator 2).

[0023] Reference numeral 15 in the drawing denotes an inlet through which the material W to be treated is introduced into the drum body 10, and reference numeral 16 denotes a discharge outlet through which the material W to be treated is appropriately dried and discharged as a product (dried product) W1. Reference numerals 15E and 16E in the drawing denote the inlet end and the discharge end of the drum body 10, respectively. Furthermore, a weir structure 6 is provided at the discharge end 16E to adjust the amount of material W retained within the drum body 10, which will be described later.

[0024] Next, the agitator 2 provided inside the drum body 10 will be described. The agitator 2 functions to agitate and crush the material W dropped from the lifter 14, and as shown in Figures 1(a) and 1(b), for example, comprises an agitator shaft 21 provided along the longitudinal direction (axial direction) of the rotating drum 1, and agitator blades 22 arranged radially from multiple locations on the agitator shaft 21. Here, as shown in Figure 1(b), for example, the agitator blades 22 arranged radially from the same location on the agitator shaft 21 are arranged at intervals of 120 degrees (so-called equal intervals of three), and each blade is formed by attaching multiple (four in this case) relatively short axial rods 222 along the longitudinal direction of the drum to a single radial bar 221 extending radially from the agitator shaft 21. 1(b), the agitation shaft 21 is set at a position eccentric to the center (axial center) of the rotating drum 1 so that almost all of the workpieces W dropped from the lifter 14 hit the agitation device 2 (agitation blades 22). The agitation shaft 21 is set to rotate at a higher speed than the rotating drum 1 during operation.

[0025] Furthermore, as described above, the discharge end 16E (discharge outlet 16) of the drum body 10 is provided with a weir structure 6 that adjusts the amount (retention amount) of the workpieces W retained in the drum, and the outlet hood 12 is provided to cover this (see FIG. 2). In other words, the entire discharge outlet 16, including the weir structure 6, is covered by the outlet hood 12. For this reason, in the past, it was not possible to open or close the weir structure 6 from outside the rotating drum 1. After stopping the rotating drum 1 and performing cooling or ventilation, an operator M had to enter the outlet hood 12 (processing machine) through a door (inspection hatch 120) provided on the outlet hood 12 and manually detach and attach the weir height adjustment block B directly to change or adjust the weir height (blockage height) (see FIG. 7). The weir structure 6 is provided at the discharge side end 16E of the rotating drum 1 and is configured to rotate together with the rotating drum 1.

[0026] Incidentally, in conventional rotary drum dryers D, the inspection hatch 120 of the outlet hood 12 is provided on the front side facing the discharge port 16 of the rotary drum 1 (the front side of the outlet hood 12), but in the present invention, it is provided on the side of the outlet hood 12, and in particular, it can be provided on both the left and right sides of the outlet hood 12 (see FIG. 2(a)). The reason why the inspection hatch 120 is provided on the side of the outlet hood 12 is that the weir structure 6 is provided near the outer periphery of the discharge port 16 of the rotary drum 1, and if the inspection hatch 120 is on the side of the outlet hood 12, it is possible for the worker M to reach the weir structure 6 and operate the movable weir 8 easily without having to enter the outlet hood 12 completely (for example, by extending his / her arms and entering only the upper half of his / her body into the outlet hood 12).

[0027] Here, the workpieces W (products W1) in the rotating drum 1 do not remain horizontally relative to the drum bottom, but rather remain slightly elevated toward the direction of drum rotation. In other words, as shown in FIGS. 1(b) and 2(a), the amount of workpieces W remaining in the rotating drum 1 is greater at the front side of the drum than at the rear side (more on the side where the workpieces W are being scraped up). Therefore, if the movable dam plate 81 is accessed through the inspection hatch 120 on the side where there is less (or almost no) workpieces W, i.e., the rear side of the drum rotation (the side opposite the scraping-up side), the retained workpieces W do not get in the way when moving the movable dam plate 81. Of course, the inspection hatch 120 does not need to be provided on both the left and right sides of the outlet hood 12; either one is acceptable. However, for the reasons mentioned above, if the inspection hatch 120 is provided on either the left or right side of the outlet hood 12, it is preferable to provide the inspection hatch 120 on the side opposite the scraping-up side, where there is less retained workpieces W.

[0028] The weir structure 6 will be further described below. As shown in Figure 1(c) as an example, the weir structure 6 comprises a fixed weir 7 and a movable weir 8, with the movable weir 8 being configured to be freely movable relative to the fixed weir 7, which is provided in the shape of an inner flange at the discharge side end 16E of the rotating drum 1, and the discharge outlet 16, i.e., the adjustable opening portion 71 formed in the fixed weir 7, being configured to be freely openable and closable. The movable weir plate 81, which is a main component of the movable weir 8, will be further described below. The movable dam plate 81 is kept in a closed state while the workpiece W is being dried, and is opened when the desired drying process is completed and the workpiece W is discharged from the rotating drum 1 into the outlet hood 12, and in other words, it serves to adjust the discharge speed of the processed product W1. Furthermore, the movable weir plate 81 can be exemplified in various embodiments as will be described below, but in any case, it functions to open and close the adjustable opening portion 71 of the fixed weir 7 that constitutes the weir structure 6, and to remove the product W1 from the rotating drum 1 into the outlet hood 12 through the opened adjustable opening portion 71. The opening and closing operation of the movable weir plate 81 performed by the worker M to perform this function can be accessed from outside the outlet hood 12, where the working environment is good, and this is a major feature of the present invention. Specifically, for example, the worker M himself may be outside the outlet hood 12 and insert only a jig (a shift device 9 described later) for opening and closing the movable dam plate 81 into the outlet hood 12, and perform the opening and closing operation from outside the outlet hood 12. Another example is a mode in which the worker M is outside the outlet hood 12 and inserts only his arms or only the upper half of his body into the outlet hood 12 to directly open and close the movable dam plate 81 by manual operation. In this case, if the movable dam plate 81 is fixed by fixing means having a bolt / nut structure, the worker may manually remove and fasten these. The above-mentioned "access from outside" refers to a situation in which worker M himself is outside the exit hood 12, but places only the opening and closing tool or only the upper half of his body, such as his arms, inside the exit hood 12 to perform opening and closing operations on the movable dam plate 81.

[0029] The movable dam plate 81 shown in FIG. 3 will be described below. The movable weir plate 81 shown in Fig. 3 is a plate-like member formed to close the adjustable opening portion 71 of the fixed weir 7, and this movable weir plate 81 is configured as a single-wing door by a hinge 82 provided on one side edge of the adjustable opening portion 71 of the fixed weir 7. Therefore, the movable weir plate 81 is configured so that the free end side can be rotated (moved) to the rear side of the rotating drum 1 (the rear side as viewed from the outlet hood 12) by the hinge 82 (see Fig. 3). In addition, a contact piece 81a is provided on the free end side of the movable weir plate 81, and when the movable weir plate 81 is closed, this contact piece 81a abuts against the edge of the fixed weir 7 (the edge opposite the hinge 82) to prevent the movable weir plate 81 from rotating any further.In other words, it has the function of setting the closing limit or positioning the closed state. On the other hand, a shift receiving piece 81b is provided on the hinge 82 side of the movable dam plate 81, which is bent in a "L" shape relative to the movable dam plate 81 in a plan view, and this shift receiving piece 81b serves as an input part for the shift operation when rotating the movable dam plate 81. Note that this shift receiving piece 81b rotates integrally with the movable dam plate 81 as it opens and closes.

[0030] Incidentally, in this embodiment, the hinge 82 of the movable dam plate 81 is provided at a position (at the edge of the movable dam plate 81) that is rearward in the rotation direction of the rotating drum 1. This is because, for example, the movable dam plate 81, which is opened at the bottom of the drum, rotates and moves in conjunction with the rotation of the rotating drum 1, and the hinge 82 is positioned below the movable dam plate 81, as shown in Figure 1(c) as an example, in other words, the movable dam plate 81 acts as a chute, being in an upwardly open state. In other words, the movable dam plate 81 in this open state can actively discharge the products W1 dropping from the lifter 14 above from the discharge port 16 (adjustable opening portion 71) to the outside of the rotating drum 1 (inside the outlet hood 12). In the following embodiments (other embodiments) that will be described separately, the movable dam plate 81 may also adopt such a one-sided swing structure.

[0031] The shift device 9 for opening and closing the movable barrier plate 81 will be described below. The shift device 9 is, for example, an opening / closing jig that employs a mechanism similar to a so-called pantograph jack, and is referred to as a pantograph shifter 91. That is, as shown in FIG. 3 above, for example, the pantograph shifter 91 is configured by four arm elements 92 connected in a diamond-shaped link shape, and is assembled using a base pin 93a, an action pin 93b, a fixed-side screw receiving pin 93c, and a movable-side screw receiving pin 93d as element connection points. Of these, the base pin 93a is rotatably supported by a fixed-side bracket 72 that is provided in an upright position from the side surface of the fixed weir 7. Furthermore, the action pin 93b is rotatably supported by a movable-side bracket 81c that is provided in an upright position from a shift receiving piece 81b of a movable weir plate 81. The shift screw 95 is rotatably held by the fixed side screw receiving pin 93c, and on the movable side screw receiving pin 93d side, the shift screw 95 is configured to thread into the screw receiving female thread 94 provided thereon. Furthermore, an operation receiving piece 95a is provided on the side of the fixed-side screw receiving pin 93c of the shift screw 95, and by engaging and rotating a separate operation handle 96 with this operation receiving piece 95a, the shift screw 95 is rotated to the open side or the closed side. As will be described in detail later, the operator M turns the operation handle 96 to rotate the shift screw 95, and as a result, the diamond shape formed by the arm element 92 changes as shown in Figures 3(a) and 3(b), causing the movable dam plate 81 to close or open the adjustment opening portion 71. In addition, the four arm elements 92 forming the pantograph structure move so that the connecting portions rub against each other when the movable barrier plate 81 is opened or closed, so there is a concern that smooth operation may be impaired if powdery material to be treated W adheres or hardens. Therefore, in actual use, it is preferable to house the four arm elements 92 in a bag-shaped cover, and leave only the operation receiving piece 95a and the tip end of the shift screw 95 exposed from the bag-shaped cover.

[0032] Next, the operating handle 96 will be described. As shown in Figure 3 above, the operating handle 96 is formed as a rod-shaped member with a crank portion 96c, one end of which is a hand-operated portion 96a and the other end of which is an engaging hook 96b, and the engaging hook 96b is configured to engage with the operating receiving piece 95a of the shift screw 95 so that the shift screw 95 can be rotated. In actual opening and closing operations, the operating handle 96 is rotated around the straight rod portion (the portion from the engagement hook 96b to the crank portion 96c) of the operating handle 96 as the center and the crank portion 96c as the rotation radius, so that the hand-operated operating portion 96a and the crank portion 96c are arranged outside the inspection hatch 120 of the outlet hood 12 (see Figure 3), while the engagement hook 96b side is inserted into the outlet hood 12 and the engagement hook 96b is engaged with the operating receiving piece 95a.

[0033] The weir structure 6 in the embodiment of Figure 3, specifically the movable weir plate 81 and the shift device 9 (pantograph shifter 91) for opening and closing it, are configured as described above, and below we will explain how to use this pantograph shifter 91 to open and close the movable weir plate 81, particularly how to change the movable weir plate 81 from a closed state (see Figure 3(a)) to an open state (see Figure 3(b)). First, the inspection hatch 120 of the outlet hood 12 is opened, and the worker M inserts the engaging hook 96b side, which is the tip portion of the operating handle 96, into the outlet hood 12 as described above. Thereafter, the engaging hook 96b at the tip of the operating handle 96 is engaged with the operation receiving piece 95a of the pantograph shifter 91, and then the operator M rotates the hand-operated portion 96a at hand, thereby rotating the shift screw 95. As a result, for example, when the shift screw 95 is rotated in the direction in which the pantograph shifter 91 opens from the state in which the movable dam plate 81 is closed, that is, the state in which the gap between the base pin 93a and the action pin 93b of the pantograph shifter 91 is most reduced (contracted), the action pin 93b of the pantograph shifter 91 moves so as to push out (push open) the shift receiving piece 81b of the movable dam plate 81 via the movable-side bracket 81c, and as a result, the movable dam plate 81 rotates around the hinge 82 like a door swinging on one side, and the free end side moves toward the rear of the rotating drum 1 (see FIG. 3(b)). In this state, the product W1, which has been raised to a certain height by the rotation of the rotating drum 1 and the action of the lifter 14, is discharged to the outside from the adjustment and release section 71. That is, when the movable dam plate 81 opened as described above is rotated approximately 90 degrees toward the side where it is scraped up from the bottom of the rotating drum 1, the hinge 82 portion is downward, as shown in FIG. 1(c) as an example, and the inclined movable dam plate 81 is in a state of having a downward slope toward the discharge port 16 (adjustment and release section 71), and the product W1 falls from the lifter 14 located above this movable dam plate 81. Therefore, the product W1 that has fallen from the lifter 14 is actively discharged from the adjustment and release section 71 along the inclined surface of the movable dam plate 81.

[0034] Naturally, such shifting of the movable dam plate 81 is performed while the rotating drum 1 is stopped. For this reason, proximity sensors or the like can be provided on the support member F of the rotating drum 1 and on the rotating drum 1 as appropriate to accurately detect the rotational position (phase) of the rotating drum 1 and control it to stop at the desired position. This allows the adjustable release section 71 provided on the discharge outlet 16 (movable dam plate 81) to be reliably stopped at a position that is easy to access from the inspection hatch 120 of the outlet hood 12. Of course, as shown in FIG. 2(b), for example, it is also possible to form an alignment mark m on the outlet hood 12 and the rotating drum 1 (the rotating side). In this case, the alignment marks m align when the rotating drum 1 is stopped, and since the aligned alignment mark m is visible, even an operator M outside the dryer (outside the rotating drum 1) can clearly see that the rotating drum 1 has stopped in the appropriate position (a position that is easy to access from the inspection hatch 120), allowing them to open and close the movable dam plate 81 with confidence. Incidentally, reference numeral 121 in the drawing denotes a drum seal provided on the outlet hood 12 to ensure sealing between the rotating drum body 10 and the non-rotating outlet hood 12. That is, this drum seal 121 has, for example, a substantially L-shaped cross section, is wound around the outer periphery of the drum body 10, and is attached so that one end of the substantially L-shaped cross section is always in contact with the drum body 10, thereby ensuring sealing of the rotating drum 1.

[0035] Next, another embodiment of such a movable weir 8 will be described. The embodiment shown in Fig. 4 differs from the embodiment shown in Fig. 3 in the configuration and movement mode of the movable dam plate 81. That is, in the embodiment shown in Fig. 4, the movable dam plate 81 is a movable dam plate unit 81U, and this unit-shaped movable dam plate unit 81U is not rotated but is made to move linearly (slide linearly) along the longitudinal direction of the rotating drum 1. 4 comprises a slide base plate 84 that moves in the longitudinal direction (axial direction) of the rotating drum 1 on the outer surface of the rotating drum 1, a dam action plate 85 that is provided in an upright position from one end of the slide base plate 84, and a discharging plate 86 that is inclined in plan view and is supported in an upright position from the dam action plate 85 on the rear side of the rotating drum 1, the discharging plate 86 being formed in a roughly rectangular shape when viewed from the front (in the longitudinal direction of the rotating drum 1), and the bottom edge that faces the inner surface of the rotating drum 1 is curved inward so as to be close to the curved surface of this inner surface. Here, a grip portion 84a is provided on the slide base plate 84, which is a handle that makes it easy for an operator M to slide the entire movable dam plate unit 81U along the longitudinal direction of the rotating drum 1. Here, reference numeral 17 in the drawing denotes a regulating guide provided on the outer surface of the rotary drum 1 to regulate the linear movement of the slide base plate 84. In addition, in the above-mentioned Patent Document 3, a curved plate is provided on the movable dam plate to improve the sealing performance between the rotary drum and the outlet hood, and the drum seal is configured to act uniformly. Similarly, in the present invention, although not shown in the figures, curved plates are arranged in contact with the regulating guides 17 on both sides of the slide substrate 84 in the range where the drum seal 121 acts, thereby ensuring sealing performance.

[0036] When the adjustment opening section 71 (discharge outlet 16) is closed, as shown in Figure 4(b) as an example, the slide base 84 positions the dam action plate 85 as far back as possible from the rotating drum 1, and the adjustment opening section 71 is closed by the dam action plate 85. On the other hand, when opening the adjustment and opening section 71, as shown in Figure 4(c) as an example, the weir action plate 85 is moved away from the adjustment and opening section 71 of the rotating drum 1, thereby moving the dispensing plate 86 so that it faces the immediate back side of the adjustment and opening section 71. Here, the "immediate back side" refers to a state in which, as shown in Figure 4(c) as an example, the edge closest to the adjustment and opening section 71 out of the four edges of the inclined dispensing plate 86 has almost reached the adjustment and opening section 71. When the movable dam plate unit 81U, opened as shown in FIG. 4(c), is rotated 90 degrees from the bottom of the rotating drum 1, the edge closest to the adjustable opening section 71 is in a lower position, as shown in FIG. 4(d) for example, so that the inclined dispensing plate 86 is inclined downward toward the discharge outlet 16 (adjustable opening section 71), and the products W1 are dropped onto this dispensing plate 86 from the lifter 14 located above. As a result, the products W1 that have fallen from the lifter 14 are actively discharged from the adjustable opening section 71 to the outside of the rotating drum 1 (into the outlet hood 12) according to the inclination of the dispensing plate 86. Alternatively, the products W1 are lifted along the inner surface by the rotation of the rotating drum 1 and slide down when they reach a certain height. At this time, the products W1 that slide down between the dispensing plate 86 and the adjustable opening section 71 are discharged from the adjustable opening section 71 to the outside of the rotating drum 1 according to the inclination of the dispensing plate 86. To fix the position of the slid slide base plate 84 (fixing the position in the closed state and the open state), an eyebolt b1 or the like, which is a fixing means with a bolt and nut structure, can be used, as shown in Fig. 4(a) above. In this case, of course, a female thread portion that screws into the eyebolt b1 is formed on the outer surface of the rotating drum 1. When operating the movable dam unit 81U, the worker M can slide the movable dam unit 81U and release and tighten the eye bolt b1 from outside the rotating drum 1 without having to place his or her arms or upper body inside the outlet hood 12.

[0037] 5 (FIGS. 5-1 and 5-2) is an embodiment in which the movable dam plate 81 is formed in the shape of a single-wing door, similar to FIG. 3 above. Therefore, the same operating members such as the hinge 82 are given the same reference numerals. This embodiment is an embodiment in which the closed state and the open state of the movable dam plate 81 are held (maintained) by fixing means having a bolt / nut structure, and can be said to be the most basic form. 5-1 shows the closed state of the movable weir plate 81, and a stop piece 81a is provided on the free rotation end side of the movable weir plate 81, and a bolt (referred to as closed state fixing bolt b2) is provided here for fixing the movable weir plate 81 in the closed state to the fixed weir 7. This closed state fixing bolt b2 is attached so that the tip of the bolt protrudes from the fixed weir 7 toward the outlet hood 12 when the movable weir plate 81 is in the closed state. To fix the movable weir plate 81 in the closed state, an eye nut n2 is screwed onto the tip of the closed state fixing bolt b2 protruding from the fixed weir 7, and the free rotating end of the movable weir plate 81 is fixed to the fixed weir 7, thereby maintaining the closed state of the movable weir plate 81 (the closed state of the adjustment opening section 71).

[0038] Furthermore, on the hinge 82 side of the movable dam plate 81, an open state fixing bracket 87 is provided so as to protrude in an inclined state (diagonally relative to the movable dam plate 81) from the movable dam plate 81 in a plan view. This open state fixing bracket 87 rotates together with the movable dam plate 81, and is configured so that the protruding direction of the open state fixing bracket 87 coincides with the longitudinal direction of the rotating drum 1 when the movable dam plate 81 is opened to the maximum extent, for example. Similarly to the closed state fixing bolt b2, this open state fixing bracket 87 also has a bolt (hereinafter referred to as the open state fixing bolt b3) provided so as to protrude from the bracket surface toward the front side (the outlet hood 12 side). Furthermore, an open-state fixing piece 74 is provided on the fixed weir 7 near the open-state fixing bracket 87 so as to protrude toward the outlet hood 12. As shown in FIG. 5-1(d), for example, this open-state fixing piece 74 is configured by providing a rectangular parallelepiped fixing piece operating portion 74b extending downward from a fixing piece base portion 74a that is L-shaped in a plan view, and a horizontally elongated receiving groove 74c is formed in the fixing piece operating portion 74b for receiving the open-state fixing bolt b3. In other words, this receiving groove 74c is a groove for receiving the open-state fixing bolt b3 that rotates integrally with the movable weir plate 81 when the movable weir plate 81 is fully open.

[0039] With this configuration, when the movable dam plate 81 is in the fully open state, as shown in Figure 5-2 as an example, the open state fixing bracket 87 is aligned along the longitudinal direction of the rotating drum 1, and the tip of the open state fixing bolt b3 rotates accordingly and fits into the receiving groove 74c (see Figure 5-1(d)). In this state, an eye nut n3 is screwed onto the tip of the open state fixing bolt b3, and the pivot base side of the movable dam plate 81 is fixed to the open state fixing piece 74, thereby maintaining the open state of the movable dam plate 81. In addition, in order to more stably hold the movable dam plate 81 in the open state, it is preferable to provide a contact portion 18 inside the rotating drum 1 against which the movable dam plate 81 abuts, and the imaginary line in Figure 5-2(b) is this contact portion 18.

[0040] Incidentally, the eye nut n3 that is screwed onto the open state fixing bolt b3 can be the same as the eye nut n2 that has been removed from the closed state fixing bolt b2. Furthermore, if there is a concern that the removed eye nuts n3 and n2 may fall when being removed from the open state fixing bolt b3 and the closed state fixing bolt b2, the eye nuts n3 and n2 can be connected to the discharge side end 16E (fixed weir 7) of the rotating drum 1 with a wire WR to prevent the nuts, which are small parts, from falling (see Figure 2(c)). 2(a) above, the movable weir plate 81 is divided into three sections in the radial direction at one discharge opening 16 (adjustable opening section 71). Also, in FIG. 5 above, the adjustable opening section 71 is formed only on the movable weir plate 81 located on the outermost side (the outermost edge of the rotating drum 1), and this adjustable opening section 71 can be freely opened and closed. However, when the movable weir plate 81 is divided into three sections in the radial direction as shown in FIG. 2(a), it is possible to provide a member that constitutes the adjustable opening section 71 on each of the two inner movable weir plates 81 located at the top and bottom, and to use a member that fixes the movable weir plate 81 in the closed state and the open state. Of course, the number of divisions of the movable weir plate 81 may be two. Furthermore, it is also possible to form the three-sectioned movable weir plate 81 into a single large movable weir plate 81 that can be freely opened and closed. Since the lower end surface 81f of the movable dam plate 81 forms a straight surface (a horizontal surface), a spacer member 101 is installed on the inner surface of the drum main body 10 along the path from the closed state to the open state so that the end surface 81f and the inner surface of the rotating drum 1 (drum main body 10) are always maintained in close proximity. This spacer member 101 prevents the products W1 from spilling out of the rotating drum 1 when the movable dam plate 81 is in the closed state. Furthermore, when the movable dam plate 81 is in the open state, most of the products W1 that slide down from the curved inner surface of the rotating drum 1 to the flat upper surface of the spacer member 101 are guided by the movable dam plate 81 toward the adjustment opening section 71 and are discharged outside the rotating drum 1. This spacer member 101 is also provided in a configuration that uses a pantograph shifter 91. More specifically, it is also provided in a configuration that uses a cam hole forming bracket 81d, which will be described later.

[0041] 6 is also an embodiment in which the movable dam plate 81 is formed in the shape of a single swing door, similar to the embodiment in FIG. In this embodiment, as shown in Figures 6(a) and 6(b), as an example, a cam hole forming bracket 81d is erected on the outlet hood 12 side from the movable dam plate 81, and a cam long hole 81e that has a long hole shape when viewed from above is formed in this cam hole forming bracket 81d. Meanwhile, a cam rod 75 is attached to the fixed weir 7, one end of which is engaged with the cam slot 81e. The cam rod 75 is configured to be movable within the cam slot 81e from one end to the other while remaining engaged in the cam slot 81e. Specifically, as shown in FIG. 6(b), the cam rod 75 is integrally formed with a rod holder 76 formed by an L-shaped bracket in a plan view. The rod holder 76 is configured to be movable in the lateral direction of the rotating drum 1 (discharge end 16E) in the drawing (a direction perpendicular to the longitudinal direction of the rotating drum 1). More specifically, the cam rod 75 is configured to be fixed with a bolt and nut structure at both the rightmost and leftmost positions in FIG. 6. Here, a nut n4 is provided that is fixed to the fixed weir 7 by welding or the like. Also, reference symbol b4 in the drawing denotes an eyebolt that is threaded onto the nut n4.

[0042] 6(a) and 6(b) show the movable dam plate 81 in a closed state, and in this state, the cam rod 75 in the figure is in a position closest to the right, and the working tip of the cam rod 75 (the tip that engages with the cam elongated hole 81e) is also in a position closest to the right within the cam elongated hole 81e. Incidentally, FIG. 6(b) is a plan view of FIG. 6(a). To open the movable dam plate 81 from this closed state, first, in FIG. 6(b), the eyebolt b4 threaded into the nut n4 is rotated in the release direction (unfastening direction) to loosen it. This loosening operation enables the rod holder 76 to move integrally with the cam rod 75 along the elongated hole 76a formed therein. Therefore, after loosening the eyebolt b4, the rod holder 76 is slid to the left together with the cam rod 75 in the drawing. This movement operation also moves the working tip of the cam rod 75 (the tip engaged in the cam elongated hole 81e) to a position closest to the left within the cam elongated hole 81e, resulting in the state shown in FIG. 6(c). Here, the movable weir plate 81 is held rotatably relative to the fixed weir 7 by a hinge 82, so that the free rotating end side (contact piece 81a) of the movable weir plate 81 moves toward the rear side of the rotating drum 1 as shown in this figure, opening the adjustment opening section 71. Naturally, the rod holder 76, which is positioned to the left side of the figure together with the cam rod 75, maintains the open state of the movable dam plate 81 by firmly screwing (tightening) the eyebolt b4 into the nut n4. In the present invention, the movable dam plate 81 itself has the function of dispensing (feeding) the product W1, or is equipped with a member (dispensing plate 86) that moves integrally with the movable dam plate 81 and has the function of dispensing (feeding) the product W1, resulting in a simple yet functional configuration. [Explanation of symbols]

[0043] D Rotary drum type dryer (rotary drum type processing machine) 1 rotating drum 2. Mixing device 3 Hot air intake 4 Feeding hopper 5 Product Screw 6 Weir structure 7 Fixed weir 8 Movable Weir 9 Shifting device 10 Drum body 101 spacer member 12 Exit Hood 120 Inspection hatch 121 Drum seal 13 Exhaust gas outlet 14 Lifter 15 Inlet 15E Input side end 16 Outlet 16E Discharge side end 17 Regulatory Guide 18 Hitting part 21 Agitator shaft 22 Mixing blade 221 Radial Bar 222 Axial Rod 31 Hot air guide board 71 Adjustment opening 72 Fixed side bracket 74 Open state fixing piece 74a Fixed piece base 74b Fixed piece action part 74c Receiving groove 75 Cam rod 76 Rod holder 76a long hole 81 Movable weir plate 81U Movable dam unit 81a Hit piece 81b Shifter support piece 81c Movable side bracket 81d Cam hole forming bracket 81e Cam slot 81f end face 82 Hinge 84 Slide board 84a Gripping part 85 Weir action plate 86 Dispatch board 87 Open state fixing bracket 91 Pantograph shifter 92 Arm Elements 93a Base pin 93b Working pin 93c Fixed side screw receiving pin 93d Movable side screw receiving pin 94 Screw holder female thread 95 Shift screw 95a Operating piece 96 Operating handle 96a Handheld control unit 96b Engagement hook 96c crank section B Weir height adjustment block F Support member M Worker (operator) m Match mark W Processing object W1 product (dried product) b1 eyebolt b2 Closed state fixing bolt b3 Open state fixing bolt b4 eye bolt n2 Eyenut n3 Eyenut n4 nut WR Wire

Claims

1. A rotary drum type processor in which materials to be treated are introduced into a rotary drum, and while the materials are raised and stirred as the rotary drum rotates, the materials are subjected to appropriate treatment, and the materials are transported from the inlet of the rotary drum to the outlet, and then transported into an outlet hood fixedly installed so as to cover the outlet, The rotating drum has a fixed weir that constitutes a weir structure and is provided in the shape of an inner flange on the edge of the discharge port side, and the fixed weir has an adjustment opening portion that is appropriately cut out, and a movable weir that constitutes the weir structure is provided in this adjustment opening portion, This movable weir is equipped with a movable weir plate that rotates together with the rotating drum, and by moving this movable weir plate the adjustment opening section is opened appropriately to adjust the amount of material that has been processed in the rotating drum that is removed; the movable weir plate is opened and closed by an operator who accesses it from outside the outlet hood, and the movable weir plate is configured to maintain an open state relative to the fixed weir, making this a rotating drum type processing machine equipped with a movable weir plate.

2. A rotating drum type processing machine equipped with a movable dam plate as described in claim 1, characterized in that the movable dam plate has a hinge at its rear edge in the drum rotation direction facing the adjustment opening portion, and the free end side of the other edge is configured to be able to rotate toward the back side of the rotating drum.

3. The opening, closing, and fixing of the movable dam plate is performed via a shift device, and the opening and closing operation of the movable dam plate using this shift device is performed by an operator outside the outlet hood by inserting the tip of the shift device into the outlet hood through an inspection hatch provided on the side of the outlet hood and manually operating the shift device to open and close the movable dam plate, as described in claim 1 or 2.

4. The movable dam plate is configured as a unit including a slide base plate that moves in the longitudinal direction of the rotating drum on the outer surface of the rotating drum, a dam action plate that is provided in a rising shape from one end of the slide base plate, and a discharging plate that is inclined in plan view and is supported in a rising shape from the dam action plate on the back side of the rotating drum, A rotating drum type processing machine equipped with a movable dam plate as described in claim 1, characterized in that when the unit is closed, the dam action plate closes the adjustment opening section, and when it is opened, the dam action plate moves away from the adjustment opening section to open the adjustment opening section, and the discharge plate moves to face the back side of the adjustment opening section.

Images