JP2009119309A - Rotary sieve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate clogging of a cylindrical rotary sieve reliably with a simple configuration. <P>SOLUTION: The rotary sieve is composed of two or more rows of protrusion members 17a, a base cylinder 17b arranged circumferentially with the rows in the longitudinal direction at angle intervals of 90° and a rotation driving mechanism driving the rotation of the base cylinder 17b, and the rows of protrusion members, the base cylinder and the rotation driving mechanism are arranged longitudinally in the upper part of a drum type rotary sieve body 18. The rows of protrusion members 17a are arranged in such a way that the number of members 17a fits the number and span of meshes 18a arranged in the longitudinal direction of the drum type rotary sieve body 18. The rotation driving mechanism drives the rotation of the base cylinder 17b so that the rows of protrusion members 17a can move forward and backward through the meshes 18a in synchronism with the rotation of the drum type rotary sieve body 18. The circumferential span of the rows of protrusion members 17a is made to be equal to the span of circumferential meshes 18a of the drum type rotary sieve body 18 so that one of the protrusion members 17a plunges into one of the meshes 18a for each rotating operation of the drum rotary type sieve body 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a rotary sieve used for sieving work to be processed containing powders or granules of various sizes and shapes, and effectively clogging various forms of the sieve. The present invention relates to a rotary sieve having a function of removing.

  The sieving of the object to be processed by hand sieving or automatic sieving using actions such as vibration due to up and down movement of the sieve, rocking by movement back and forth and left and right, centrifugal separation by rotating action, etc. Is a predetermined particle size in which the resulting effect is aligned by the presence or absence of passage of the mesh. Such sieving of the object to be treated is unavoidable whether the clogging phenomenon is unavoidable, regardless of whether it is performed by a wet method or a dry method. In particular, clogging of the particles almost inevitably occurs. Such clogging of the grains, with the passage of time of the sieving operation, on the one hand, the penetration of these grains into the sieving becomes deeper and further the penetration becomes stronger, and on the other hand, the penetration into the sieving The clogging increases, and finally, most of the sieve mesh becomes clogged, and the function of sieving the original material to be processed into a predetermined particle size is almost lost. If this happens, the work must be stopped and forced to remove clogging. Thus, such clogging of the mesh reduces the efficiency of the sieving operation and gives a great loss in productivity.

  The clogging of the sieve as described above is in the field of personal hobbies, and is used for horticultural soils such as gravel and Kanuma soil used for growing bonsai using plants and pots using planters. Naturally, this also occurs when the particle size of the material is classified by hand sieving. In such a case, clogging of the above-mentioned horticultural soils in the form of powder and granule generated by the sieve mesh is caused by rubbing the sieve mesh with a brush or by gently hitting the ground with the sieve upside down. Attempts to remove it. At this time, powdery ones can be removed relatively easily, but granular ones usually bite into the sieve and are difficult to remove. Therefore, as the above sieves continue to be used, the number of sieves with clogging gradually increases, and the majority of the sieves may eventually become clogged. Sorting work is often interrupted. In this case, as mentioned above, since it is in the field of personal hobbies and preferences, it is not considered as serious.

  However, in businesses that require high productivity by using multiple or multi-stage automatic sieves to efficiently and efficiently screen large quantities or many processed materials over a long period of time, such automatic sieves are used. The clogging is a very inconvenient phenomenon, and it is desired to provide a sieve that is not clogged regardless of whether it is a wet sieve for washing an object to be treated and sorting it or a dry sieve for sorting a substance to be treated after drying.

  Patent Document 1 discloses a classification apparatus for powdery raw materials in fields such as steel production and cement production, and particularly a classification apparatus for classifying and eliminating massive bodies in raw material powder containing moisture. .

  This device is attached to the rotating shaft at the upper part of the ascending operation side of the sieve blade dentition when the rotating blade is rotated by attaching the sieving blade dentition aligned in the axial direction at an angular interval such as 90 degrees in the circumferential direction. The raw material charging unit is a classifying device in which a classifying discharge unit is configured in the lower part on the ascending operation side, and a mass discharging unit is configured in the lower part on the lowering operation side, and the classification of the input material is performed for each sieve blade dentition. The interval is set to a classification interval so as to be performed between adjacent sieve blade teeth. Further, in this classifying device, when the rotary shaft is rotated to the lump discharge portion side, it is inserted between adjacent sieve blade teeth of the sieve blade tooth row passing through the position. A clogging prevention mechanism is arranged that attempts to prevent clogging by arranging comb teeth.

  Patent Document 2 discloses a vibrating sieve with a clogging removing function that screens a granular material such as iron ore with a predetermined size as a boundary.

  This device is a vibrating sieve as described above, and the height of the plurality of rows of support ribs that support the sieve mesh from below is set to a height such that the sieve mesh is convexly curved in the width direction, An elastic member that can be expanded and contracted is installed at the ends of these support ribs so that the support height of the turning mesh can be changed, and the elastic member is contracted to lower the support height of the sieve mesh, Vibrating sieve with clogging removal function that removes clogging of powdery material adhering to the opening by causing the net to vibrate by making the net from a tensioned state to a relaxed state and thus hitting the sieve net against the elastic member It is.

  Patent Document 3 sifts organic fertilizer obtained by collecting and fermenting waste mainly discharged from farms such as straw and grass into finely decomposed compost and underdegraded waste. A trommel type sieving device is disclosed which is provided with clogging removing means.

  This device has a large number of through-holes on the circumferential side, and has a cylindrical body as a main component for sieving the objects to be sorted put in by rotation. Inside the cylindrical body, A sieving apparatus comprising a rotating body such as a ribbon screw that is parallel to the rotation center axis and is in contact with the inner periphery of the cylindrical body so as to remove an object to be sorted attached to the inner peripheral surface of the cylindrical body. It is.

  Patent Document 4 discloses a vibrating sieve device that can classify powder and grains and remove clogged powder and grains in fields such as mining, chemistry, food, and medicine. This device is a vibration sieving device provided with an oscillating device capable of adding two different amplitudes: a small amplitude for classifying powder and particles and a large amplitude for removing clogged powder and particles.

  Patent Document 5 discloses a method for removing clogging in a trommel type sorter that sorts and screens relatively fine particles such as earth and sand and compost. The clogging removal method of this trommel type sorter is a method in which compressed air is jetted from the outside to the inside of the rotary cylinder network of the sorter, so that the material clogged in the mesh of the rotary cylinder network and the thin film adhered to the mesh It is intended to remove film-like contaminants.

  However, each of the sieving device or the clogging removal method of the sieving device having the clogging removing function disclosed in the above Patent Documents 2 to 5 specifies a field as shown in each, and is a dry type. It is considered that it is possible to secure a certain degree of clogging removing action as long as it is used only for sorting with sieving.

  However, in the apparatus or method disclosed in the above Patent Documents 2 to 5, it is unavoidable that a powdery body or a granular body may be tightly packed in the screen of the sieving apparatus. In such a case, The apparatus or method disclosed in Patent Documents 2 to 5 cannot be easily removed. In the classifying device of Patent Document 2, it seems that clogging is removed with certainty because the combing teeth enter between the sieve blade teeth of the sieve blade teeth row. Depending on the type and nature of the workpiece, accurate classification may be difficult, and when removing clogging, the direction of the load applied to the comb teeth is perpendicular to the extending direction of the comb teeth. Therefore, there seems to be a problem that the damage is likely to occur.

  In any case, the sieving device having the clogging removal function and the clogging removal method of the sieving device described in Patent Documents 1 to 5 above can exhibit a certain degree of effect only in a specific field, and specify a use field. Without clogging, it seems impossible to remove the clogs of the meshes, especially hard grains that have deeply penetrated and have a strong fixing force.

JP-A-7-108223 JP-A-8-267013 Japanese Patent Laid-Open No. 10-43686 Japanese Patent Laid-Open No. 2001-96232 Japanese Patent Laid-Open No. 2005-144427

  An object of the present invention is to eliminate clogging that impedes the action of a sieve that sorts the object to be processed by passing the sieve, and in particular, removal of particles clogged regardless of the hardness of the material of the object to be processed. As a result of diligent research aimed at the purpose of removal, it was found that removal at this stage, where the initial biting in the clogging is shallow, the fixing force is weak, and a large force is not required for removal, is the most effective and effective. Based on the above, it is an object of the present invention to provide a rotary sieve that is suitable for removing clogging of grains having various shapes and dimensions including powder in a long continuous operation.

  1 of the present invention includes a cylindrical rotary sieve main body, a rotation drive mechanism that rotationally drives the rotary sieve main body, a plurality of protruding members disposed on the outer peripheral side of the rotary sieve main body, and the plurality of protruding members. A rotary sieve configured with a projection driving mechanism that allows the rotary sieve main body to move forward and backward in synchronization with the rotation operation of the rotary sieve main body.

  A second aspect of the present invention is the rotary sieve according to the first aspect of the present invention, wherein the plurality of protruding members are arranged in a single row or in a plurality of rows along the axial direction on the outer peripheral side of the rotary sieve body. It is.

  According to a third aspect of the present invention, in the rotary sieve according to the first or second aspect of the present invention, the projection driving mechanism is configured so that the plurality of projection members are disposed in the mesh of the rotary sieve main body for each rotation operation. It is configured so as to perform the pushing operation gradually.

  According to a fourth aspect of the present invention, in the rotary sieve according to the first, second, or third aspect of the present invention, the shape of the protruding member is formed in a taper shape that becomes narrower from the base or from the middle toward the tip.

  According to a fifth aspect of the present invention, in the rotary sieve according to the first, second, third, or fourth aspect of the present invention, the protruding member is made of any one of metal, resin, hard rubber, soft rubber, and wood.

  6 of the present invention is the taper that narrows the hole shape of the mesh of the rotary sieve body from the inside to the outside in the rotary ornament of 1, 2, 3, 4 or 5 of the present invention. Or a taper that narrows from the outside to the inside.

  7 of the present invention is the rotary sieve of 1, 2, 3, 4 or 5 of the present invention, wherein the shape of the sieve mesh of the rotary sieve body is tapered from the outside toward the inside / outside intermediate portion, It is formed in a shape related to a tapered combination that narrows from the inside toward the inside / outside intermediate portion.

  According to the rotary sieve of 1 of the present invention, the projection member is allowed to enter the screen mesh of the rotary sieve body in such a manner that the projection member can freely advance and retract in synchronization with the rotation. Regardless of whether clogging has occurred in the sieve screen, the protrusion member enters. If clogging has occurred in the sieve, it will be reliably pushed out by the protruding member, and clogging will be removed. Since the sieve mesh can always maintain the open state, the normal sieve sorting operation can always be continued.

  According to the rotary sieve of 1 of the present invention, an operation such as applying vibration to the rotary sieve body, hitting it, or injecting compressed air is not added. Unlike them, clogging is surely removed, and problems such as damage to the rotary sieve main body and the bearing that supports it rotatably are a problem when vibration or impact is applied. It is very good.

  According to the rotary sieve 1 of the present invention, it can be applied regardless of the form, use or state of the object to be processed, or regardless of the wet or dry sieve sorting method. As described above, it is possible to continue normal sieving and sorting operations at all times, thereby improving productivity and increasing efficiency.

  According to the rotary sieve of 2 of the present invention, since the plurality of protruding members are arranged in a row or in a plurality of rows along the axial direction on the outer peripheral side of the rotating sieve body, at least the range of the protruding member row The clogging generated in the mesh of the rotary sieve main body can be surely removed, and the normal sieve sorting operation can be continued at all times.

  According to the rotary sieve of 3 of the present invention, in the range where the protruding member is arranged, the protruding member enters the mesh of the rotary sieve main body once for each rotation. Even if any of the clogging occurs, the protrusion is removed by the projecting member while the rotary sieve main body rotates once. The clogging becomes a thing that is strongly and tightly clogged with the passage of time. As described above, according to the rotary sieve of 3 of the present invention, the protruding member is rotated while the rotary sieve main body rotates once. Therefore, the removing operation can be performed more reliably without imposing an excessive burden on the protruding member and its driving mechanism.

  According to the rotary sieve 4 of the present invention, it is possible to avoid the possibility that the projecting member enters the mesh of the rotary sieve main body and causes interference with the periphery of the mesh hole when retracting.

  According to the rotary sieve of 5 of the present invention, for example, by selecting various materials for the protruding member according to the properties of the object to be processed, a sufficient clogging eliminating effect can be achieved while considering the lifetime of the protruding member. Can be obtained.

  According to the rotary sieve of 6 or 7 of the present invention, mutual interference at the time of the advancement and retraction of the protruding member with respect to the sieve is avoided, and further, the contact area between the granular object to be processed and the sieve which is clogged with the sieve Can be removed with less force.

  The best mode for carrying out the invention will be described based on an embodiment with reference to the drawings. In addition, this embodiment collects shots scattered in the clay shooting range together with the earth and sand, and collects and collects the shots from the earth and sand collected in a place where business activities are not hindered on the site. It is the example applied to the inside rotary sieve. Therefore, the rotary sieve of the embodiment will be described in detail while explaining the outline of the recovery device.

  FIG. 1 is a schematic plan configuration diagram of the embodiment, FIG. 2 is a schematic front configuration diagram in which some belt conveyors and discharge pipes of the embodiment are omitted, and FIG. Schematic front configuration diagram of the particle size adjustment unit, (b) is an outline of the secondary particle size adjustment unit that adjusts the particle size while drying by heating, the crushing unit of small chunk soil, and the wind separation unit that separates shot and soil powder Fig. 3 is a schematic side view of the primary particle size adjusting unit, Fig. 4 is a schematic side view of only the sieving mechanism of the secondary particle size adjusting unit, and Fig. 5 is a crushing unit of small block soil, shots and soil powder. FIG. 6 (a) is a cross-sectional front view showing a saddle-type rotary sieve body and a clogging removing mechanism of the primary particle size adjusting unit, and FIG. Cross-sectional front view showing the drum-type rotary sieve body and clogging removal mechanism of the secondary particle size adjustment unit, (c) is the first projection member of the clogging removal mechanism (D) is a schematic bottom view showing a second example of the projection member of the clogging removal mechanism, (e) is a schematic bottom view showing a third example of the projection member of the clogging removal mechanism, (f) ) Is a schematic bottom view showing a fourth example of the protruding member of the clogging removal mechanism, (g) is a schematic cross-sectional view showing a first example of a screen of a drum-type rotary sieve body, (f) is a drum-type rotation It is a schematic sectional drawing which shows the 2nd example of the mesh of a sieve main body.

  As shown in FIG. 1 and FIG. 2, this recovery apparatus accepts the shatter-mixed earth and sand, which is the object to be processed, recovered from the clay shooting range, and sifts out large rocks and the like from this. The primary particle size adjustment unit A for adjusting the particle size, the secondary particle size adjustment unit B for adjusting the particle size while accepting the soil having undergone the primary particle size adjustment and heating and drying as necessary, and the soil having undergone the secondary particle size adjustment are received. The crushing part C for crushing the small lump soil therein, and the powder and small particles crushed and transferred by the crushing part C are separated from the shot and sand powder and granules mixed therein. And it is comprised with the wind-power separation part D which collect | recovers the shot with a large specific gravity.

  As shown in FIG. 1, FIG. 2 (a), FIG. 3 and FIG. 6 (a), the primary particle size adjusting unit A receives the shatter-mixed earth and sand collected from the clay shooting range, A hopper 2 to be loaded into the vertical rotating sieve main body 4 from one end, the upper vertical rotary sieve main body 4 for screening the earth and sand received from the hopper 2 into large rocks and the other, and the vertical rotation The clogging removal mechanism 3 arranged along the length direction of the upper part of the sieve main body 4 and the earth and sand which is located at the lower part of the vertical rotary sieve main body 4 and screened from the vertical rotary sieve main body 4 are received. The hopper 6 to be supplied to the belt conveyor 7 directly below it, and the sieve-passing large block rocks discharged from the end opposite to the hopper 2 of the saddle type rotary sieve body 4 are received by the external belt conveyor 34. A discharge pipe 5 for discharging, and a hopper 6 at the bottom of the vertical rotary sieve body 4 The belt conveyor 7 for feeding the earth and sand received from the belt conveyor 7 to the lower hopper 8, the lower hopper 8 for charging the earth and sand received from the belt conveyor 7 into the lower vertical rotary sieve body 10 from one end thereof, and the hopper 8 The lower bowl-shaped rotary sieve main body 10 that further sifts the earth and sand received from the large block rock and the others, and the clogging removal mechanism arranged along the length direction of the upper part of the lower bowl-shaped rotary sieve main body 10 9 and a hopper 12 which is located at the lower part of the vertical rotary sieve main body 10 and receives the earth and sand which has been sieved from the vertical rotary sieve main body 10 and passed through the sieve mesh, and which is supplied to the belt conveyor 13 directly below it, The discharge pipe 11 that receives the non-sieving large block rock discharged from the end opposite to the hopper 8 of the saddle type rotary sieve body 10 and discharges it to the external belt conveyor 34; under As the belt conveyor 13 for feeding the top of the hopper 16, the main components of the secondary sediment that has passed through the sieve mesh received from the hopper 12 of the primary particle size adjustment unit B, and obtained by incorporation constructed on carriage 1.

  The upper vertical rotary sieve main body 4 is configured to be slightly larger than the target primary particle size adjustment size, and the lower vertical rotary sieve main body 10 is the target primary particle size adjustment size. To match. These saddle-shaped rotary sieve bodies 4 and 10 are combined with rotation transmission means comprising a chain, a chain wheel, and a gear train (not shown) which are arranged on the carriage 1 using an electric motor (not shown) as rotation driving means. It is designed to be rotated by a rotating drive mechanism.

  As shown in FIG. 1, the vertical rotating sieve main bodies 4 and 10 are configured by a plurality of straight round steel rods having both ends made of an annular belt-shaped steel plate and arranged in parallel at regular angular intervals in the circumferential direction. It is configured in a mesh shape with circular round steel rods arranged at regular intervals in the direction, and the mesh becomes a mesh. The annular strip steel plate, the straight round steel bar, and the annular round steel bar are all employed with sufficient strength. The mesh is suitably 50 to 100 mm with respect to the upper vertical rotary sieve main body 4 of the upper stage, and is configured to be the most preferable 70 mm in this embodiment. Further, the mesh is suitably 20 to 50 mm for the lower rotary screen main body 10 in the lower stage, and is configured to be the most preferable 30 mm in this embodiment.

  The belt conveyors 7, 13, 34 and the belt conveyor 14, which are described later, are connected to one of roller members at both ends of the belt conveyor 14, in this embodiment, by means of a rotation transmission means comprising a gear train by an electric motor (not shown) incorporated in itself. Thus, the rotational force is transmitted and is driven to rotate. The belt conveyor 34 is extended to a temporary accumulation place for earth and sand.

  As shown in FIGS. 1, 2 (a), 3 and 6 (a), the clogging removal mechanisms 3 and 9 have basically the same configuration, and a plurality of linearly arranged protrusions. Members 3a, 3a ..., 9a, 9a ..., and base cylindrical bodies 3b, 9b in which these are arranged at an angular interval of 90 degrees along the length direction and in the circumferential direction, and the base cylindrical body 3b, The rotation drive mechanism (projection drive mechanism) (not shown) that rotationally drives 9b.

  As shown in FIG. 6 (a), the protruding members 3a and 9a have a large size according to the size of the mesh of the vertical rotary sieve main bodies 4 and 10 in the primary particle size adjusting unit A. Adopted. In the upper saddle-type rotary sieve main body 4 and the lower vertical-type rotary sieve main body 10, the former has a slightly larger mesh size, and accordingly, the size of the protruding member 3 a is slightly increased. Of course, there is almost no problem even if the sizes of the protruding members 3a corresponding to the lower stage are unified. As shown in the figure, each of the projecting members 3a and 9a is formed in a tapered shape that narrows downward. In this embodiment, the taper is tapered from the base toward the tip, but a taper narrowing from the middle toward the tip is also possible. In addition, in this embodiment, the shape viewed from the lower surface is formed in a substantially conical shape as shown in FIG. 6 (c), but as shown in FIGS. 6 (d), (e), and (f), A triangular pyramid shape, a quadrangular pyramid shape, a hexagonal pyramid shape, or the like may be used.

  In this embodiment, the projecting members 3a and 9a are all made of metal, but may be made of resin, hard rubber, soft rubber, or wood.

  Further, as shown in FIG. 1, the protruding members 3 a and 9 a are arranged in the respective rows in accordance with the number and span of the mesh arrangement along the length direction of the saddle type rotary sieve bodies 4 and 10 in this embodiment. Although the number and span are configured in the same row, even if it is configured in multiple rows, it is two rows arranged every other mesh, and the mutual arrangement may be configured to have different phases. it can.

  The rotation drive mechanism is configured so that the protruding members 3a, 3a,..., 9a, 9a... Can be moved forward and backward in synchronism with the rotational movement of the corresponding saddle-shaped rotary sieve bodies 4 and 10 respectively. The base cylindrical bodies 3b and 9b are rotationally driven so that the cylindrical bodies 3b and 9b rotate. Specifically, in this embodiment, the rotation driving mechanism for the base cylindrical bodies 3b and 9b is an electric motor that is a rotation driving means that is also used for the upper and lower saddle-shaped rotary sieve bodies 4 and 10. And a transmission means composed of a chain, a chain wheel and a gear train for transmitting the rotational driving force of the electric motor, and adjusting the gear train of the transmission means, the projecting members 3a, 3a,. The rows 9a, 9a,... Are configured so as to be able to advance and retreat in the meshes in synchronism with the rotational operation of the corresponding saddle type rotary sieve bodies 4 and 10 respectively.

  In this embodiment, the protruding members 3a, 3a, 9a, 9a,..., The circumferential spans of the rows are made to coincide with the circumferential mesh spans of the saddle type rotary sieve bodies 4, 10, so that the protruding members 3a. 3a... 9a, 9a... Are configured to push into the meshes of the saddle-type rotary sieve bodies 4 and 10 once every rotation of the latter.

  As shown in FIG. 1 and FIG. 2 (b), the secondary particle size adjusting unit B includes a heating / drying chamber 45 mounted on the carriage 15 and secondary classification means configured in the heating / drying chamber 45. It is a thing. The heating / drying chamber 45 has a configuration in which the periphery is covered with a heat insulating material. As shown in FIG. 2 (b), the heating / drying chamber 45 is connected to heating means 44 provided outside the chamber, and the heating / drying chamber 45 is heated. The means 44 heats the drum-type rotary sieve main bodies 18, 24, 30 of the secondary classification means disposed in the heating / drying chamber 45 and the heating / drying chamber 45. In this embodiment, the heating means 44 is of a type that sends out heated air, and hot air is sent into the heating and drying chamber 45. Moreover, it is preferable to control the temperature in the heat-drying chamber 45 between 50-200 degreeC as needed. In many cases, it is preferable to control the temperature between 80 and 100 ° C. In the heating / drying chamber 45, temperature sensors are arranged at several locations so that temperature information is transmitted to the control unit of the heating means 44, and the temperature information is used to control the inside of the heating / drying chamber 45 to a target temperature. It is intended to control as much as possible. In addition, the vapor | steam which evaporated from the to-be-processed object heated is exhausted through postscript hoppers 16, 22, and 28, postscript discharge pipes 19, 25, and 31 below.

  As shown in FIG. 1, FIG. 2 (b), FIG. 4 and FIG. 6 (b), the secondary classification means includes a hopper 16 that receives primary classified soil supplied from the belt conveyor 14, and the hopper The upper drum-type rotary sieve main body 18 that receives and classifies the earth and sand introduced into the heating chamber 45 through 16 at one end side thereof, and the upper part of the drum-type rotary sieve main body 18 along the length direction thereof A clogging mechanism 17, a hopper 20 that is located below the drum-type rotary sieve main body 18, receives the earth and sand screened from the drum-type rotary sieve main body 18, and supplies it to the spiral conveyor 21 directly below the drum-type rotary sieve main body 18, A discharge pipe 19 that receives the sieve impervious soil discharged from the end opposite to the hopper 16 of the mold rotary sieve main body 18 and discharges it to the external belt conveyor 34, and a hopper below the drum rotary sieve main body 18 A spiral conveyor 21 for feeding the earth and sand received from the medium 20 to the middle hopper 22, a middle hopper 22 for charging the earth and sand received from the spiral conveyor 21 into the middle drum-type rotary sieve body 24 from one end thereof, and the hopper An intermediate drum-type rotary sieve main body 24 for further finely screening the earth and sand received from 22; a clogging removal mechanism 23 arranged along the length of the middle drum-type rotary sieve main body 24; and the drum The hopper 26 located at the lower part of the mold rotary sieve main body 24 and the non-meshing soil discharged from the end opposite to the hopper 22 of the drum type rotary sieve main body 24 are received and discharged to the external belt conveyor 34 A spiral conveyor 27 for feeding the earth and sand received from the lower hopper 26 of the pipe 25 and the drum type rotary sieve main body 24; A lower hopper 28 for charging the earth and sand received from the spiral conveyor 27 into the lower drum type rotary sieve main body 30 from one end thereof, and a lower drum type rotary sieve main body 30 for further finely screening the earth and sand received from the hopper 28. A clogging removal mechanism 29 disposed along the length direction of the lower drum-type rotary sieve main body 30; a hopper 32 positioned at the lower portion of the drum-type rotary sieve main body 30; A sieve pipe 31 that receives the sieve impervious soil discharged from the end opposite to the hopper 28 of the sieve body 30 and discharges it to the external belt conveyor 34 and a hopper 32 below the drum type rotary sieve body 30 is received. And a spiral conveyor 33 that feeds the earth and sand to the belt conveyor 35 that feeds the hopper 36 of the crushing section C.

  In this embodiment, the drum-type rotary sieve main body 18, 24, 30 is composed of a steel drum member having a sufficient strength with a thickness of 7 mm (a range of 1 to 10 mm is appropriate) on the circumferential side. The sieve meshes 18a, 18a,... Are configured to be opened on the circumferential side at regular angular intervals in the circumferential direction and at regular intervals in the length direction. In this embodiment, the opening area of the sieve meshes 18a, 18a... Is a range slightly exceeding 40% in the length direction of the drum member, and an area where the sieve mesh 18a is not opened at both ends in the length direction. Widely provided. The sieve mesh 18a is configured such that the size of the upper, middle, and lower drum-type rotary sieve bodies 18, 24, and 30 is gradually reduced from the upper to the lower, and the lower sieve 18a is formed. Configure to match the size of the desired secondary particle size adjustment.

  Specifically, the mesh 18a has an opening of 7 to 15 mm for the upper drum-type rotary sieve main body 18 and 5 to 10 mm for the middle drum-type rotary sieve main body 24. The rotation sieve body 30 is suitably 3 to 5 mm. In this example, the upper, middle, and lower stages were set to 12 mm, 8 mm, and 4 mm.

  In this embodiment, the shape of the sieve mesh 18a of the drum-type rotary sieve main bodies 18, 24, 30 is formed in a tapered shape that expands from the inside toward the outside as shown in FIG. 6 (b). In addition to this, the sieve mesh 18a is configured as a tapered mesh mesh 18b that narrows from the inside to the outside, as shown in FIG. 6 (g), or in FIG. 6 (h). As shown in the figure, it is also possible to configure a sieve mesh 18c having a constricted shape of the intermediate part, that is, a taper shape that narrows from the outside toward the inside / outside intermediate part and a taper shape that narrows from the inside to the inside / outside intermediate part. it can.

  The drum-type sieve bodies 18, 24, and 30 are fixedly provided with a spiral member 46 for sending earth and sand introduced therein to the discharge pipes 19, 25, and 31, as schematically shown in FIGS. 1 and 4. The earth and sand transfer operation is performed as the drum-type sieve bodies 18, 24, and 30 rotate.

  Further, these drum-type rotary sieve main bodies 18, 24, 30 use an electric motor (not shown) disposed on the carriage 15 as a rotation driving means, and similarly, a rotation transmission means comprising a chain, a chain wheel and a gear train (not shown). It is rotated by a rotation drive mechanism combined with the above.

  The spiral conveyors 21, 27, and 33 are each composed of a long bowl-shaped member and a spiral member disposed on the elongated bowl-shaped member. In this embodiment, the spiral conveyor is attached to the spiral conveyors 21, 27, and 33 themselves. A rotational force is transmitted by a built-in electric motor (not shown) via a rotation transmission means including a gear train, and is driven to rotate.

  As shown in FIGS. 1, 2 (b), 3 and 6 (b), the clogging removal mechanisms 17, 23, and 29 have basically the same configuration, and a plurality of linear arrangements. , 23a, 23a,..., 29a, 29a..., And base cylinders 17b, 23b, which are disposed along the length direction and at an angular interval of 90 degrees in the circumferential direction. 29b and a rotation drive mechanism (protrusion drive mechanism) (not shown) that rotationally drives the base cylindrical bodies 17b, 23b, and 29b. Basically, it has the same configuration as the clogging removal mechanisms 3 and 9 of the primary particle size adjusting unit A.

  As described above, the protrusion members 17a, 23a, and 29a have an upper stage, a middle stage, a lower stage, and the size of the sieve mesh 18a that opens in the drum-type rotary sieve main bodies 18, 24, and 30. It was configured to become smaller sequentially. Further, as shown in FIG. 6B, the projecting members 17a, 23a, 29a are all formed in a tapered shape that becomes narrower downward. In this embodiment, the taper is tapered from the base toward the tip. However, in this case, a taper that narrows from the middle toward the tip is also possible. In addition, in this embodiment, the shape viewed from the lower surface is formed in a substantially conical shape as shown in FIG. 6 (c), but this is also shown in FIGS. 6 (d), (e), and (f). As shown, it may be configured in a triangular pyramid shape, a quadrangular pyramid shape, a hexagonal pyramid shape, or the like.

  In the present embodiment, the projecting members 17a, 23a, and 29a are all made of metal, but may be made of resin, hard rubber, soft rubber, or wood.

  Further, as shown in FIG. 1, the protruding members 17a, 23a, 29a are arranged in this embodiment in the number of arrangements of sieve meshes 18a, 18a... Along the length direction of the drum-type rotary sieve bodies 18, 24, 30. The number and span of each row are the same in accordance with the span, but in this case as well, even if it is constituted by a plurality of rows, two rows are arranged every other sieve mesh 18a, and the mutual arrangement is made. May be configured to have different phases.

  In the rotation drive mechanism, the projection members 17a, 17a ..., 23a, 23a ..., 29a, 29a ... are arranged in synchronism with the rotation of the corresponding drum-type rotary sieve main bodies 18, 24, 30, respectively. The base cylindrical bodies 17b, 23b and 29b are rotationally driven so that the base cylindrical bodies 17b, 23b and 29b rotate so that they can advance and retreat. Specifically, in this embodiment, these rotational drive mechanisms for the base cylindrical bodies 17b, 23b, and 29b are also used for the upper, middle, and lower drum-type rotary sieve bodies 18, 24, and 30, respectively. It is composed of an electric motor which is a rotation driving means, and a transmission means comprising a chain, a chain wheel and a gear train for transmitting the rotational driving force of the electric motor, and adjusting the gear train of the transmission means, The protruding members 17a, 17a ..., 23a, 23a ..., 29a, 29a ... can be moved forward and backward to the meshes 18a, 18a ... in synchronism with the rotation of the corresponding drum-type rotary sieve bodies 18, 24, 30. It is comprised as follows.

  In this embodiment, the circumferential spans of the protruding members 17a, 17a ..., 23a, 23a ..., 29a, 29a ... are arranged in the circumferential direction of the drum-type rotary sieve bodies 18, 24, 30 in the circumferential direction 18a, The projection members 17a, 17a ..., 23a, 23a ..., 29a, 29a ... are aligned with the span of 18a, and the drum-type rotary sieve main body 18, 24, 30 has a sieve mesh 18a, 18a ... It was configured so as to push in once for each operation.

  As shown in FIGS. 1, 2 (b) and 5, the crushing section C receives a hopper 36 that receives the earth and sand classified by the secondary particle size adjusting section B from a belt conveyor 35, and receives the hopper 36 by the hopper 36. The crushed drum 38 is received and crushed at one end, and then sent from the other end to the hopper 39 of the next wind separation part D, and a rotary drive mechanism that rotationally drives the crushed drum 38. Is.

  As shown in FIG. 5 in particular, the crushing drum 38 is provided with a spiral member 38a for transferring the earth and sand received from the hopper 36 side end portion to the opposite end portion, and in the vicinity of the center of the inside thereof. The crushing jig | tool 37 which crushes the small lump in earth and sand into a powder and a granule is arranged.

  As shown in FIG. 5, the crushing jig 37 is constituted by a chain member arranged slightly closer to the entrance side of the crushing drum 38 in this embodiment. One end of the chain member is coupled to a part of the inner surface of the crushing drum 38 slightly closer to the inlet side, and the other end is coupled to a part closer to the outlet side. The chain member is made of metal having a sufficient margin in length and having a certain amount of weight, and an intermediate margin portion thereof is transferred to the inside as the crushing drum 38 rotates. It operates to beat the earth and sand and break up the small particles in the earth and sand.

  In this embodiment, the rotational drive mechanism is composed of an electric motor which is a rotational drive means, and a transmission means comprising a chain, a chain wheel and a gear train for transmitting the rotational drive force of the electric motor. This is a general means and is not shown.

  As shown in FIGS. 1, 2 (b) and 5, the wind separation part D became powder and small particles discharged from the discharge side end of the crushing drum 38 of the crushing part C. A hopper 39 that receives the mixed sand and sand, a vertical separation cylinder 40 that receives the mixed sand and sand (powder and small particles) received by the hopper 39 and spontaneously falls therein, and in the middle of the separation cylinder 40 The blower portion 41 is connected to the right angle, the discharge pipe 42 is extended from the blower portion 41, and the shot receiving container 43 is arranged below the separation cylinder 40.

  The blower portion 41 is composed of an inverted L-shaped cylindrical body and a blower disposed therein, and drives the blower to suck air from a downward outer end portion and blow out from the opposite end portion, Components other than the shot, that is, the sand component, are blown away in the direction perpendicular to the dropping direction from the powder and small particles of the mixed powder that naturally fall through the separation cylinder 40, and can be discharged to the discharge pipe 42 arranged on the opposite side. It is what I did. The blown air from the blower is to drop the shot as it is.

  The extension destination of the discharge pipe 42 is on the belt conveyor 34.

  Below, the example of a driving | operation of the collection | recovery apparatus of this Example is demonstrated.

  As described above, the object to be screened by this recovery device is the sand and sand mixed with the shots collected from the specific range of the clay shooting range and accumulated in a place where there is no hindrance to business activities on the site.

  First, the sand and sand mixed with the above-mentioned shot is sieved by the primary particle size adjusting unit A formed on the carriage 1. More specifically, when the sand and sand mixed with the shot is put into the hopper 2, it is supplied to the vertical rotary sieve body 4 from one end thereof. In the vertical rotary sieve body 4, the earth and sand are sorted, and large rocks and the like that cannot pass through the sieve mesh are discharged from the other end to the discharge pipe 5 and sent to the belt conveyor 34 through the discharge pipe 5. . On the other hand, the earth and sand particles that have passed through the meshes of the vertical rotary sieve body 4 fall to the hopper 6, are supplied to the belt conveyor 7 below the hopper 6, are conveyed by the belt conveyor 7, and are fed to the lower hopper 8. It is thrown into.

  The earth and sand particles are supplied from one end to the lower vertical rotary sieve main body 10 through the hopper 8 and sorted, and the earth and sand blocks and rocks that cannot pass through the sieve mesh are discharged from the opposite end to the discharge pipe 11. It is discharged and sent to the belt conveyor 34 as well. On the other hand, the earth and sand particles that have passed through the meshes of the vertical rotary sieve main body 10 drop onto the hopper 12, are supplied to the belt conveyor 13 below, and are conveyed by the belt conveyor 13 to perform the next process. It is delivered to the belt conveyor 14 that conveys the earth and sand particles to the upper hopper 16 of the next particle size adjusting unit B. It should be noted that all the earth and sand that have not been passed through the meshes of the vertical rotary sieve bodies 4 and 10 sent to the belt conveyor 34 are discharged to the temporary temporary collection area by the belt conveyor 34, and are collected and sieved. Returned to shooting range after completion.

  In this way, in the primary particle size adjusting unit A, the shape and size are within a predetermined range from the state where the two-stage sieving is performed and the shape and size are different from the powder, and various grains are mixed in an irregular manner. It is possible to provide a large effect that is effective for sieving and sorting performed after the secondary particle size adjusting unit B. For example, the load on each part after the secondary particle size adjustment part B can be reduced and damage can be prevented.

  As described above, when the saddle-type rotary sieve main bodies 4 and 10 are rotated to screen the earth and sand, the clogging removing mechanisms 3 and 9 are operated in synchronization with the rotary operation, and the vertical-type rotation is performed. Regardless of whether the sieves of the sieve bodies 4 and 10 are clogged with earth or sand, the protrusion members 3a, 3a,..., 9a, 9a. It works by pushing into the sieve mesh. Therefore, when soil and sand are clogged in the sieve, the clogging can be surely removed without unavoidable. Therefore, the screen sorting operation by the vertical rotary sieve main bodies 4 and 10 is surely performed as expected.

  As described above, the soil having the primary particle size adjusted is transferred to the belt conveyor 14, and is thereby fed to the secondary particle size adjusting unit B mounted on the carriage 15, and is heated and dried from the upper hopper 16 thereof. The drum-type rotary sieve main body 18 in the upper stage in the chamber 45 is charged from one end side.

  Hot air from the heating means 44 is blown into the heating / drying chamber 45 and controlled to a target temperature range. In this way, the heating / drying chamber 45 and the drum-type rotary sieve main bodies 18, 24, 30 and other components installed therein are heated. In this example, the target temperature range was set to 80 to 100 ° C. Needless to say, when heating and drying are not necessary due to the condition of the object to be processed, the operation of the heating means 44 is stopped and the sieving operation can be performed without heating and drying.

  Thus, the primary particle size-adjusted earth and sand charged in the heating / drying chamber 45 is heated and dried when passing through the drum-type rotary sieve main bodies 18, 24, 30 and other components, and becomes smoother, thereby improving mobility. In addition, the secondary particle size adjustment is performed while the sieving becomes easier. Steam generated from the soil to be heated and dried is released into the atmosphere through the hoppers 16, 22, 28 and the discharge pipes 19, 25, 31.

  First, sieving is performed by the upper drum-type rotary sieving body 18, and the earth and sand that has passed through the sieving meshes 18 a, 18 a... Are received by the hopper 20, passed to the spiral conveyor 21 below, and further spiral conveyor 21. Thus, the ink is supplied into the middle hopper 22. The earth and sand supplied to the middle hopper 22 is charged into the middle drum-type rotary sieve main body 24 from one end thereof, and sieved again by the drum-type rotary sieve 24, and the earth and sand passed through the sieve meshes 18a, 18a. Is loaded into the lower drum-type rotary sieve main body 30 through the lower hopper 26, the lower spiral conveyor 27, and the lower hopper 28, where the sieving is passed through the sieve meshes 18a, 18a. Is transferred to the belt conveyor 35 through the lower hopper 32 and further below the spiral conveyor 33, and is supplied to the crushing drum 38 of the crushing section C through the hopper 36 by the belt conveyor 35.

  Here, the upper, middle, and lower drum-type rotary sieve main bodies 18, 24, 30 have meshes 18a, 18a,... Are installed in large, medium, and small sizes as described above. By sequentially repeating the sorting, the final adjustment is made within the effective size range for collecting the shot.

  During the above sieving operation, on the end side where the discharge pipes 19, 25, 31 of the drum-type rotary sieve main bodies 18, 24, 30 of the upper stage, middle stage, and lower stage were arranged, the large mesh that did not pass through the sieve mesh The lump of earth and sand is transferred and discharged to the belt conveyor 34 through the discharge pipes 19, 25 and 31.

  As described above, when the drum-type rotary sieve main body 18, 24, 30 rotates and sifts earth and sand, the clogging removal mechanisms 17, 23, 29 operate in synchronization with the rotation operation, Regardless of whether or not the meshes 18a, 18a ... of the drum-type rotary sieve main bodies 18, 24, 30 are clogged with earth and sand, the protrusion 17a of the clogging removal mechanisms 17, 23, 29 is always included in one rotation. , 17a..., 23a, 23a..., 29a, 29a. Therefore, when the sieves 18a, 18a,... Are clogged with earth and sand, the clogging can be surely removed without unavoidable. Therefore, the operation of sorting the sieves by the drum type rotary sieve main bodies 18, 24, 30 is surely performed as expected.

  The earth and sand whose final particle size has been adjusted through the particle size adjusting process of the secondary particle size adjusting unit B is transferred to the hopper 36 of the crushing unit C by the belt conveyor 35 as described above, and the crushing is performed through this. The crushing drum 38 of the part C is charged from one end thereof.

  The earth and sand charged in the crushing drum 38 is crushed by a crushing jig 37 in the middle while being transferred from the one end side to the opposite end by the internal spiral member 38a as it rotates. It will be. The earth and sand that have undergone the particle size adjustment process in the secondary particle size adjustment unit B are removed from large block soil and rocks, and may include single shots, shots with powdery soil attached, and small blocks that may contain shots. In addition, a small lump of soil (clayy dry lump etc.) is crushed, and the earth and sand subject to sieving are entirely divided into powder and granules. Become.

  As described above, the earth and sand, which has become powder and small particles as a whole, is further fed by the spiral member 38a and discharged from the end of the crushing drum 38 on the opposite side to the loading side, and the wind separation unit It is thrown into the hopper 39 of D.

  The powder mixed with shots received by the hopper 39 and the earth and sand in the form of small particles are sent to the vertical separation cylinder 40 as they are, and naturally fall in the separation cylinder 40. At this time, in the blower section 41 connected in the middle, the blower is blowing air, the part in the middle of the separation cylinder 40 is orthogonal, and the blowing air is sent to the discharge pipe 42 extending in the extending direction, As for the earth and sand falling on the separation cylinder 40, the powdery soil and the small-particle soil with a small specific gravity, excluding the shots therein, are blown off to the discharge pipe 42 side, and only the shot with a large specific gravity remains as it is. The inside of 40 falls and is accommodated in the shot receiving container 43 of the downward direction.

  The powdery soil and the small-grained soil blown into the discharge pipe 42 are transferred to the belt conveyor 34 as they are, and then discharged to the temporary collection field by the belt conveyor 34, aggregated, and sieved. After the end of the division, it is returned to the shooting range.

  Thus, the screening and collection of the shots from the earth and sand collected from the clay shooting range is completed, and the remaining earth and sand accumulated in the temporary stacking field can be returned to a required area in the clay shooting range.

  Therefore, according to the rotating device of this embodiment, the clogging removal mechanisms 3, 9, 17, 23, 29 use the mesh-type rotary sieve bodies 4, 10 and the drum-type rotary sieve bodies 18, 24, 30. By sorting the sieves while removing clogs, it is possible to efficiently collect the shots even in the clay shooting range premises, for example, from sediment that is accumulated in a piled state and contains moisture. it can.

  The recovery device of this embodiment is preferably applied when sieving granular materials such as valuable resources contained in earth and sand that are different in shape and size and contain irregular particles in addition to powder. However, without limiting the object, for example, for sorting and collecting so-called environmental garbage such as metal cans or resin containers scattered on the beach or the sandy beach of a lake, or in the grounds or sandboxes of green spaces or athletic parks Inappropriate large-scale gravel mixed in and collected by sieving and collecting to improve the environment, and further, grading and collecting large-scale gravel in farmland to collect and collect soil, and other materials whose shape and particle size are limited For example, the present invention is preferably applied to, for example, screening glass, resins, metals, fertilizers, etc., which are granular in shape.

The schematic plane block diagram of an Example. FIG. 2 is a schematic front configuration diagram in which some belt conveyors and discharge pipes in the examples are omitted, in which (a) is a schematic front configuration diagram of a primary particle size adjustment unit that performs first-stage particle size adjustment, and (b) is a heating operation. The schematic front block diagram of the secondary particle size adjustment part which adjusts a particle size while drying, the crushing part of a small lump, and the wind-power separation part which isolate | separates a shot and a soil powder. The schematic side surface block diagram of a primary particle size adjustment part. The schematic side surface block diagram of only the sieve mechanism of a secondary particle size adjustment part. The partial notch schematic side surface block diagram of the crushing part of a small block soil and the wind-power-separation part which isolate | separates a shot and a soil powder. (a) is a cross-sectional front view showing a vertical rotary screen main body and clogging removal mechanism of the primary particle size adjustment unit, (b) shows a drum type rotary sieve main body and clogging removal mechanism of the secondary particle size adjustment unit Cross-sectional front explanatory view, (c) is a schematic bottom view showing a first example of the protruding member of the clogging removal mechanism, (d) is a schematic bottom view showing a second example of the protruding member of the clogging removal mechanism, (e) Is a schematic bottom view showing a third example of the projection member of the clogging removal mechanism, (f) is a schematic bottom view showing a fourth example of the projection member of the clogging removal mechanism, (g) is a drum-type rotary sieve body FIG. 3 is a schematic cross-sectional view showing a first example of a sieve mesh, and (f) is a schematic cross-sectional view showing a second example of a sieve mesh of a drum-type rotary sieve body.

Explanation of symbols

A Primary particle size adjusting unit B Secondary particle size adjusting unit C Crushing unit D Wind separation unit 1,15 Bogie 2, 6, 8, 12, 16, 20, 22, 26, 28, 32, 36, 39 Hopper 3, 9 , 17, 23, 29 Clogging removal mechanism 3a, 9a, 17a, 23a, 29a Protruding member 3b, 9b, 17b, 23b, 29b Base cylindrical body 4, 10 Vertical type rotary sieve body 5, 11, 19, 25, 31 , 42 Discharge pipe 7, 13, 14, 34, 35 Belt conveyor 18, 24, 30 Drum-type rotary sieve body 18a, 18b, 18c Mesh 21, 21, 33 Spiral conveyor 37 Crushing jig 38 Crushing drum 38a Spiral Member 40 Separating cylinder 41 Blower part 43 Shot receiving container 44 Heating means 4
45 Heating / drying chamber 46 Spiral member

Claims (7)

  Cylindrical rotary sieve body, rotational drive mechanism for rotationally driving the rotary sieve body, a plurality of projecting members disposed on the outer peripheral side of the rotary sieve body, and a rotational operation of the rotary sieve body using the plurality of projecting members And a projection driving mechanism that allows the mesh to enter and retract freely in synchronization with the mesh.   The rotary sieve according to claim 1, wherein the plurality of protruding members are arranged in a line or in a plurality of lines along the axial direction on the outer peripheral side of the rotary sieve main body.   3. The projection driving mechanism according to claim 1 or 2, wherein the projection driving mechanism is configured such that the plurality of projection members push into the mesh of the rotary sieve main body once per rotation operation. Rotary sieve.   The rotary sieve according to claim 1, 2 or 3, wherein the shape of the protruding member is tapered from the base or from the middle toward the tip.   The rotary decoration according to claim 1, 2, 3, or 4, wherein the protruding member is made of any one of metal, resin, hard rubber, soft rubber, and wood.   The hole shape of the mesh of the rotary sieve body is formed in either a tapered shape that narrows from the inside to the outside of the rotary sieve body or a tapered shape that narrows from the outside to the inside. Or 5 rotary sieves.   The hole shape of the mesh of the rotary sieve body is formed into a shape according to a combination of a tapered shape that narrows from the outside toward the inner and outer intermediate portions and a tapered shape that narrows from the inner side to the inner and outer intermediate portions. 4 or 5 rotary sieves.

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