JP2010240626A - Purifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multilayered purifier which prevents powder leakage by improving a sealing function and simplifies the attaching/detaching work of a sieving screen even when a plurality of sieving screens having different meshes are disposed in one layer in the multilayered purifier. <P>SOLUTION: A sieve fixing means 30 includes a body 32 for pressing the rear end of the most downstream side sieve 4, a cover member 31 for sealing the opening 10b of a sieve box 10, a pair of knob bolts 33a, 33b for screw-engaging between the cover member 31 and the body 32 to make the width of a space between them adjustable, and an elastic member 37 interposed in a screw engagement portion between the cover member 31 and the body 32. The cover member 31 is provided with a pair of sealing means 42a, 42b capable of sealing or releasing the opening 10b by manual operation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is based on semolina (fragments of various particle sizes) or midlings (relatively coarse of endosperm grains crushed by a brake roll) generated in the milling process, and the air that flows upward from below the sieve. The present invention relates to a purifier for obtaining pure semolina by separating an overtail with a lot of bran (skin) in combination with a flow action.

  As a conventional purifier, for example, one disclosed in Patent Document 1 is known. In this case, at least one box-like casing is firmly connected to the base via an elastic element, and the casing is provided with two rows of sieves stacked in three stages in the middle part thereof, In this configuration, at least one suction hood is provided at the upper part of the casing, and at least one fine product collecting device is provided at the lower part of the casing.

  On the other hand, the purifier disclosed in Patent Document 2 has a description of a pressing body of a sieve. That is, in paragraph [0013], “the sieving device 2 of the purifier 1 of the present embodiment has a multi-layer structure in which the sieve screen 6 has three layers. The rear ends of 6 are fixed by sieve pressing bodies 12A, 12B, and 12C, respectively.The pressing body 12A has an opening 13A, the pressing body 12B has an opening 13B, and the pressing body 12C has an opening 13C. The openings 13A, 13B, and 13C communicate with the take-out rod 14 through the discharge rods 8A, 8B, and 8C, respectively, ”and the openings 13A.13B, It can be seen that 13C has a separating function for guiding the overtail to the discharge rod 8 for each sieve screen 6, and the pressing body 12 at each stage has a sealing function for preventing powder leakage.

  However, in the conventional sieve mesh presser, after the sieve mesh 6 is inserted into the casing, the opening of the casing is only closed and clamped, and the pressing force cannot be adjusted. there were. For example, when a plurality of sieve meshes having different meshes (numbers) are arranged in one layer (in Patent Document 2, four sheets are arranged toward the advancing direction of the stock), the pressing force cannot be adjusted. The pressure contact action between the sieve screens becomes insufficient, resulting in “rattle”, and the screen is subjected to intense vibration during screening, so that there is a problem that the sealing function for preventing powder leakage is insufficient.

European Patent Application No. 0334180 (EP0334180 A2) JP-A-8-39002

  In view of the above-mentioned problems, the present invention improves the sealing function to prevent powder leakage even in the case where a plurality of sieve meshes having different meshes are provided in each layer in a multilayer type purifier, and prevents sieving. It is a technical problem to provide a simple purifier for attaching and removing nets.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a plurality of sieves stacked on each other are accommodated in a sieve box, and the sieve box has a non-vibrating element by at least four legs. The sieve box is connected to a vibration generator so as to be vibrated in the longitudinal direction of the sieve box, and a sieving material supply unit is provided upstream of the sieve box. In addition, the downstream side of the sieve box is connected to the discharge part of the overstuff, and the lower part of the sieve box is provided with a collecting device for collecting the granular material dropped from the sieve, and further above the sieve box In a purifier provided with an air distribution chamber for sucking air that has penetrated upward from below the sieve,
The sieve box has a structure in which an opening is formed for each layer on the rear end surface of the sieve box so that the sieve can be inserted and removed from the opening, and a guide rail formed in the longitudinal direction in the sieve box is provided for each layer. In addition, the opening is provided with a sieve fixing means for sealing the opening while pressing the most downstream sieve among the plurality of sieves inserted from the opening. And
The sieve fixing means includes a main body that presses the rear end of the most downstream sieve, a lid member that seals the opening, and a screw fit between the lid member and the main body so that a gap is provided. A pair of knob bolts that can be adjusted in a wide and narrow manner and an elastic member interposed in a screw fitting portion between the lid member and the main body, and the lid member is sealed with the opening by manual operation. The technical means of providing a pair of sealing means that can be stopped or released was taken.

  Further, in the invention according to claim 2, the sieve fixing means of the upper sieve layer among the sieve fixing means is the above-mentioned sieve fixing means, in order to separate and drop the over matter for each of the upper, middle and lower sieves, A single outlet is formed in the gap between the main body and the lid member, and the sieve fixing means of the middle sieve layer is arranged in parallel with the one outlet in addition to the outlet formed by cutting out the rear side of the main body. In addition to the two outlets, the sieve fixing means for the lower sieve layer is arranged in parallel with the outlets cut out on the front side of the main body. Thus, three outlets for over-stuff are formed.

  Furthermore, the invention according to claim 3 is provided with a separator discharge gutter for discharging the over-substance on the downstream side of the sieve box, and the separator discharge gutter has a plurality of partition walls with a predetermined gap inside. Disposed further below the plurality of partition walls, the upper, middle and lower over items are gathered and discharged from one outlet, or the upper, middle and lower over items are divided into two parts. Provided with multiple branch valves that can be selected to discharge from three outlets or to separate the over-substance from each of the upper, middle and lower tier sieves and discharge from three outlets It is characterized by.

  According to the first aspect of the present invention, when a plurality of sieves are incorporated in the sieve box, the handle of the pair of sealing means attached to the lid member of the sieve fixing means is raised and held by hand. By rotating, the engagement between the stopper of the sealing means and the edge of the opening of the sieve box is released, and the lid member can be removed from the opening. Then, a sieve is inserted and assembled from the opening of the sieve box, and then the main body of the sieve fixing means is pressed against the rear end of the sieve of each layer and pressed, and the handle of the sealing means attached to the lid member is rotated. As a result, the stopper is engaged with the edge of the opening, and the handle is pushed down to urge the stopper to the edge of the opening to fix the sieve. Thereby, the sieve can be fixed to the sieve box, and the assembling work can be easily and quickly performed.

  Then, the pair of knob bolts attached to the lid member of the sieve fixing means are adjusted by turning so that the distance between the main body and the lid member is widened. That is, the main body extends in the front direction of the sieve box, and the pressing force in the depth direction against the sieve is strongly adjusted, so that the gap between the sieves becomes substantially zero. As a result, the pressure contact between the sieves becomes appropriate, and there is no “rattle”, and even under severe vibration during sieve selection, the sealing function works sufficiently and powder leakage can be prevented.

  According to the second aspect of the present invention, the over matter from the upper stage sieve layer passes through the three outlets formed in the upper stage to the lower stage sieve fixing means and is guided to the separated article outlet, so that the middle stage sieve layer From the lower sieve layer passes through one outlet and passes through two outlets formed in the middle and lower sieve fixing means. It will be guided to the separation outlet. That is, it has a separation function for inducing over substances for each sieve of the upper, middle and lower layers.

  According to the third aspect of the present invention, the upper sieve layer, the middle sieve layer, and the lower sieve layer are aggregated and discharged from one outlet, or the upper sieve layer and the middle sieve. Divide the over-layered product of the upper and lower sieve layers into two parts and discharge them from the two outlets, or separate the over-substances into the upper, middle and lower sieve layers, Since there are multiple branch valves that can select whether to discharge from the outlet, switching of the branch valve can be set according to the milling process diagram of the mill, the type, number and specifications of the machine Even if it is different for each factory, it can be dealt with appropriately.

1 is a schematic perspective view of a purifier according to an embodiment of the present invention. It is a partially broken front view of the same purifier. It is a right view of the same purifier. It is a longitudinal cross-sectional view when the AA line of FIG. 2 is fractured. In the sieve box of the purifier which concerns on embodiment of this invention, it is a perspective view which shows the components structure when accommodating a sieve. It is a perspective view which shows the overtail discharge port formed in the sieve fixing means of the sieve layer of each step | level. It is a perspective view which shows the sieve box rear part of the purifier which concerns on embodiment of this invention, and a separated material discharge basket. It is a perspective view which shows the components structure of a sieve fixing means. It is a top view of the same sieve fixing means. It is sectional drawing when the BB line of FIG. 9 is fractured | ruptured. It is a schematic sectional drawing which shows the switching direction of the branch valve arrange | positioned in the isolate | separate discharge | emission container.

  The best mode for carrying out the present invention will be described with reference to the drawings. 1 is a schematic perspective view of a purifier according to an embodiment of the present invention, FIG. 2 is a partially broken front view of the purifier, FIG. 3 is a right side view of the purifier, and FIG. It is a longitudinal cross-sectional view when the AA line of FIG. 2 is fractured.

<Overview>
1 to 4, the purifier 1 of the present invention has a dual structure in which so-called sieve boxes are arranged in two rows and can process two types of stock, and is separated to the left and right with respect to the central machine casing 17. Arranged.

  As shown in FIGS. 1 and 2, a supply port 2 is provided on the upper left side of the machine body, that is, on the upstream side of the sieve box 10 to supply powder particles that are raw materials before classification and purification. On the lower side, that is, on the downstream side of the sieve box 10, a separation outlet 3 for a separation (overtail) that could not pass through the mesh of the sieve is provided. The sieve box 10 is provided with sieves 4 stacked in three stages, and the sieves 4 gradually increase in width in the longitudinal direction of the sieve box 10, that is, from the upstream side to the downstream side. A plurality are arranged. Below these sieves 4... Are arranged an inner trough 5 and an outer trough 6 (see FIG. 4) that serve as a powder collecting device, and the sieved powder granules are the inner trough 5 and the outer trough. 6, and the inner trough 5 is connected to the central drop port 7 to take out the granular material that has passed through the sieve 4. The outer trough 6 is provided with a sieve 4 having a large mesh. The upstream drop port 8 that has passed through and the downstream drop port 9 that has passed through the sieve 4 having a small mesh are connected to each other, so that particles having different particle sizes can be taken out of the machine. Reference numeral 50 denotes a product guide flap for switching the dropping port, reference numeral 51 denotes an intake port, and reference numeral 52 denotes a raw material supply feeder.

<Vibration configuration>
Each of the sieves 4 is accommodated in a sieve box 10, and the sieve box 10 is supported on a support base 12 by at least four legs 11, and is supported by the legs 24 and a seat 24 at the lower end. Between the seat portion 27 of the base 12, hollow rubber springs 13 as a vibration member and roll vibration isolation members 14 are interposed. As a result, the hollow rubber springs 13... That are consumables can be easily taken out of the machine by removing the seats 24 and 27, the maintenance is easy, and the replacement time can be shortened. And the cross beam member 49 etc. which connect each leg part 11 to a rectangular shape are assembled | attached, and the two unbalanced vibration generators 15 are provided in the supply port 2 side of the said leg part 11 and the cross beam member 49. FIG. Is attached, and a vibration in a linear and constant direction in the direction of arrow A (see arrow A in FIG. 1) is generated.
The roll vibration isolation member 14 allows movement in the front-rear direction (arrow y direction in FIG. 1) and the vertical direction (arrow z direction in FIG. 1), while moving in the left-right direction (arrow xx direction in FIG. 1). The direction of the original linear vibration direction (the direction of arrow A in FIG. 1) even when the vibration direction by the unbalanced vibration generator 15 at the time of starting and stopping is unstable. This is effective in preventing the occurrence of lateral rolling with respect to the sieve box 10.

  The unbalanced vibration generator 15 (see FIG. 2) can be adjusted by rotating the pipe-shaped joint 15a, and the unbalance strength can be adjusted by appropriately adjusting the unbalanced weight 15b. It is moderated. Two unbalanced vibration generators 15 are fixed to the pipe-shaped joint 15a, and are electrically connected so as to vibrate in the opposite direction, thereby removing the unbalanced component to the side. This is a configuration in which pure linear longitudinal vibration in the direction of arrow A occurs. Reference numeral 16 denotes a cover body of the unbalanced vibration generator.

<Non-vibrating element>
The machine frame 17 on the support 12 carries non-vibrating elements (see FIG. 4), and the upper end of the machine frame 17 is formed in a substantially T shape so as to exceed the left and right sieve boxes 10. The machine frame 17 holds a support base 19 that forms a top air distribution chamber 18 that is a part of a non-vibrating element. The air distribution chamber 18 is for sieving by allowing air to pass from the lower side to the upper side of the plurality of stages 4 to raise the air mixed with the powder that has passed through the sieves 4. A plurality of partition walls (not shown) are provided in the distribution chamber 18 in a direction perpendicular to the longitudinal direction of the sieves 4... And divided into a plurality of chambers by the partition walls. The air distribution chamber 18 is provided with a rectifying plate 20 formed on the inclined surface 18a at the upper side thereof and for preventing wind unevenness on the sieve 4 at a narrowed portion of the pair of inclined surfaces 18a. Is connected to a cyclone-type suction portion 21 so as to form a vortex in the collected air. The suction portion 21 is connected to a suction exhauster (not shown) via a suction exhaust pipe 23. Reference numeral 22 denotes an open / close valve for adjusting the amount of air sucked.

<Configuration in sieve box>
As shown in FIG. 5, the sieves 4 of each layer housed in the sieve box 10 are held by guide rails 10 a provided in the sieve box 10. The guide rails 10a are respectively provided along the front-rear direction of the sieve box 10, and sandwich and hold both end edges in the short side direction of the respective sieves 4. And the opening part 10b is formed for every sieve layer 4 ... of each layer in the rear end surface of the sieve box 10, and it inserts and removes along the guide rail 10a from the rear end surface side of each sieve layer 4 .... It is the structure which can do.

<Configuration of sieve fixing means>
5 and 6, the rear end 4k of each sieve layer 4 is pressed by the respective sieve fixing means 30, and the sieve box is covered by the lid member 31 of the sieve fixing means 30. The ten openings 10b are fixed by sealing. In the sieve fixing means 30 of the present embodiment, the tightening force in the depth direction of the sieves 4 is adjustable. That is, as shown in FIGS. 8, 9, and 10, the sieve fixing means 30 presses the lid member 31 that closes the opening 10 b on the rear end surface of the sieve box 10 and the rear end 4 k of the sieve 4. A main body 32 which is formed in a rectangular shape and has a smooth surface-like stainless steel plate 34 for transferring an overtail and seals 35a and 35b for preventing leakage of powder from the opening 10b. The main part is composed of a pair of knob bolts 33 a and 33 b that connect the main body 32 and the lid member 31.

  A pair of screw holes for screwing the knob bolts 33 a and 33 b are screwed into the lid member 31, and the knob bolts 33 a and 33 b are screwed into the body 32 from the lid member 31. At this time, the bolt portions 36a and 36b of the knob bolts 33a and 33b are provided with coil springs 37a and 37b as elastic members between the lid member 31 and the main body 32. In the main body 32, the frame portion 32a is perforated. After being inserted into the provided mounting hole 32b, it is fixed with a double nut 38 (see FIG. 10). As a result, the main body 32 and the lid member 31 can be connected while holding the elastic force by the knob bolts 33a and 33b and the coil springs 37a and 37b. 8, 9, and 10, reference numeral 39 is a double nut for fixing the coil springs 37a and 37b, reference numeral 40 is a washer, and reference numeral 41 is a stopper for fixing the knob bolts 33a and 33b. It is.

<Operation of sieve fixing means>
The operation of the sieve fixing means 30 having the above configuration will be described. By adjusting the rotation of the knob bolts 33a and 33b, the interval between the main body 32 and the lid member 31 can be adjusted to be wide and narrow. The pressing force in the depth direction with respect to the sieves 4... Extends in the front direction is strongly adjusted, and the pressing force in the depth direction with respect to the sieves 4. The

<Sealing means>
Further, sealing means 42a and 42b capable of manually opening and closing the opening 10b of the sieve box 10 and the lid member 31 are attached to the lid member 31. When the sealing means 42a and 42b cause a pair of handles 43a and 43b, the stoppers 44a and 44b are retracted, and the biasing force between the stoppers 44a and 44b and the edge of the opening 10b by the spring 57 is weakened. By rotating the handles 44a and 44b, the engagement between the stoppers 44a and 44b and the edge of the opening 10b is released, and an opening / closing operation is possible. Commercially available products can be used as the sealing means 42a and 42b. For example, model THA-164 manufactured by Tochigiya Co., Ltd. can be used.

<Overtail outlet>
On the other hand, the sieve fixing means 30 that presses the respective sieves 4 are formed with discharge ports 45 that guide the overtail from the respective sieve layers 4 to the separated product discharge ports 3. That is, as shown in FIG. 6, the upper (first stage) sieve fixing means 30a has one outlet 45a in the space between the main body 32a and the lid member 31a, and the middle stage (second stage). In the stage) sieve fixing means 30b, two outlets 45a, 45b are formed by juxtaposing the outlet 45a formed by notching the rear half of the upper stainless steel plate 34 to the outlet 45a similar to the above. Further, the lower (third stage) sieve fixing means 30c is provided with three outlets 36c formed by notching the middle stainless steel plate 34a in parallel with the outlets 45a and 45b. Discharge ports 45a, 45b, and 45c are formed.

  With the above configuration, the overtail from the upper (first stage) sieve layer 4a passes through the stainless steel plate 34 on the upper surface of the main body 32a of the sieve fixing means 30a, as shown by the solid line arrow in FIG. The overhead from the middle (second stage) sieve layer 4b is guided to the separated product outlet 3 through the three outlets 45a formed from the upper stage to the lower stage, as indicated by the dashed arrows in FIG. Then, after passing through the stainless steel plate 34a on the upper surface of the main body 32b of the sieve fixing means 30b, it passes through the two outlets 45b formed from the middle stage to the lower stage and is guided to the separated substance outlet 3, and the lower stage (third stage). The overtail from the sieve layer 4c passes through the discharge port 45c formed in the sieve fixing means 30c and is guided to the separated product discharge port 3 as shown by the one-dot chain line arrow in FIG. That is, the discharge ports 45a, 45b, and 45c have a separation function for inducing an overtail for each of the sieve layers 4a, 4b, and 4c.

<Separate discharge unit>
Further, as shown in FIG. 7, on the downstream side of the sieve box 10, a separated product discharge rod 46 that guides the overtail flowing down from the sieve box 10 to the separated product discharge port 3 is attached. The separation material discharge rod 46 is provided with partition walls 47 and 48 with a predetermined gap therebetween, and a switching operation knob for the branch valves 53 and 54 (see FIG. 11) further below the partition walls 47 and 48. 55, 56 are provided. As a result, when the branch valves 53 and 54 are set to the neutral position (see the branch valves 53 and 54 shown by the solid lines in FIG. 11), the overtail from the upper (first stage) sieve layer 4a. Into the separated product discharge port 3a, overtail from the middle (second stage) sieve layer 4b into the separated product discharge port 3b, and overtail from the lower (third stage) sieve layer 4c into the separated product discharge. Each can be discharged separately to the outlet 3c.

Here, as shown in FIG. 11, when the branch valves 53 and 54 are switched as indicated by reference numerals 53a and 54a, respectively, so as to close the separated discharge ports 3a and 3c, the upper (first stage) sieve layer 4a, all overtails from the middle (second stage) sieve layer 4b and the lower (third stage) sieve layer 4c can be collected and discharged from the separated product outlet 3b. In addition, as shown in FIG. 12, when the branch valves 53 and 54 are switched as indicated by reference numerals 53b and 54b, respectively, so as to close the separated product outlet 3b, the overtail is in two directions of the separated product outlets 3a and 3c. Can be branched and discharged.
In other words, in milling factories, the types, number and specifications of individual machines used in each process from break to reduction differ from factory to factory. Accordingly, switching of the branch valves 53 and 54 can be set.

<Action>
Next, the operation of the above configuration will be described. First, as a preparation stage, as shown in FIGS. 5 and 6, four sieves 4 with different meshes are incorporated along the guide rails 10a (see FIG. 5) at each stage of the sieve box 10. The sieve box 10 is inserted in order from the finer one. That is, the size of the first sieve is the one whose stock is coarser than the mesh that was overrun by the shifter of the previous process, and the fourth sieve has a mesh larger than that of the sieve through which the stock passed through the previous shifter. It is preferred to use coarse or at least the same count.
In the purifier 1 according to the present embodiment including the upper stage (first stage), the middle stage (second stage), and the lower stage (third stage), for example, the upper stage (first stage) sieve As the layer 4a, four sieves of 24th, 22nd, 20th and 18th are incorporated, and as the middle (second stage) sieve layer 4b, 4 sheets of 26th, 24th, 22nd and 18th It is recommended that four sieves of 32, 28, 26 and 22 be incorporated as the lower (third) sieve layer 4c.

  After incorporating the plurality of sieves 4 in the sieve box 10 as described above, the sieve fixing means 30 is pressed against the rear end 4k of each sieve layer 4 as shown in FIGS. While pressing, the opening 10b of the sieve box 10 is sealed and fixed by the lid member 31. That is, the handle 44a, 44b attached to the lid member 31 is raised and held by hand, and the handle 44a, 44b is rotated to engage the stoppers 44a, 44b with the edge of the opening 10b. By pushing down 44a and 44b, the stoppers 44a and 44b are urged and fixed to the edge of the opening 10b by a spring 57.

  Next, when the stopper 41 is loosened and the knob bolts 33a and 33b attached to the lid member 31 are pivotally adjusted, the distance L between the main body 32 of the sieve fixing means 30 and the lid member 31 can be adjusted. That is, if a slight gap is generated between the four sieves 4 of different counts incorporated in each stage, this causes “rattle”, but the interval L between the main body 32 and the lid member 31 is increased. The main body 32 extends in the front side direction of the sieve box 10 and the pressing force in the depth direction against the sieves 4... Is strongly adjusted, the gap is substantially zero, and the pressing is sufficient. As a result, the pressure contact between the sieves 4... Becomes appropriate, and there is no “rattle”, and even under severe vibrations during sieve selection, the sealing function works sufficiently and powder leakage can be prevented. Become.

  On the other hand, when it is desired to weaken the pressing force such as recombination of the respective sieves 4..., If the interval between the main body 32 and the lid member 31 is narrowed, the main body 32 contracts in the rearward direction, so that the main body 32 contracts in the rearward direction. The pressing force in the depth direction is adjusted to be weak. When the adjustment is completed, the stopper 41 is tightened to fix the knob bolts 33a and 33b.

  Next, the purifier 1 is activated. First, when the two unbalanced vibration generators 15 are operated, the sieve box 10, the inner trough 5, and the outer trough 6 start to vibrate. At this time, the lateral vibration isolating member 14 restricts the movement in the left-right direction (arrow x direction in FIG. 1), directs the original linear vibration direction (arrow A direction in FIG. 1), and Generation of lateral rolls is prevented. Also, air is sucked from the intake port 51 by the operation of a suction exhauster (not shown) connected to the suction / exhaust pipe 23, and an upward air flow is generated from the lower side of the sieve 4 of the sieve box 10 upward.

  The granular material, which is a raw material before classification and purification, is supplied from the supply port 2 to the raw material supply feeder 52, is rectified by the raw material supply feeder 52, and then supplied onto the sieves 4. The granular material on the sieve 4 slightly tilted back and forth flows to the downstream side by vibration in the front-rear direction (A direction in FIG. 1), and the granular material is shaken on the sieve 4 to be heavy. Particles sink below and light particles float above. Then, the light skin part is lifted by the rising airflow passing through the sieve 4 upward from below, the heavy particles remain as they are, and the semolina particles fall on the lower sieves 4b and 4c through the mesh of the sieve 4. Since the screens 4 are gradually coarsened from the upstream side to the downstream side, the semolina particles falling from the upstream screen 4 are fine in size, and the semolina particles falling from the downstream screen 4 are small in particle size. large. Further, the overtail including the skin portion that does not fall from the sieves 4 leads to the discharge ports 45 of the sieve fixing means 30 that press the sieves 4 of each stage.

  That is, as shown in FIG. 6, after passing through the upper stainless steel plate 34 from the upper (first stage) sieve layer 4a, it passes through the three outlets 45a formed from the upper stage to the lower stage, and the separated product. Overtail from the middle (second stage) sieve layer 4b, which is guided to the discharge port 3, passes through the stainless steel plate 34a on the upper surface of the main body 32b of the sieve fixing means 30b, as shown by the broken arrow in FIG. After that, it passes through the two outlets 45b formed from the middle stage to the lower stage and is guided to the separated substance outlet 3, and the overtail from the lower (third stage) sieve layer 4c is indicated by the one-dot chain line arrow in FIG. As shown in FIG. 6, the gas passes through the discharge port 45c formed in the sieve fixing means 30c and is guided to the separated product discharge port 3 through the separated product discharge rod 46.

  In addition, as shown in FIG. 11, when the branch valves 53 and 54 are set to the neutral position in the separated product discharge rod 46, the overfill from the upper (first stage) sieve layer 4a is removed from the separated product drain. At the outlet 3a, the overtail from the middle (second stage) sieve layer 4b is to the separated product outlet 3b, and the overtail from the lower (third stage) sieve layer 4c is to the separated article outlet 3c. Each is separated and discharged. The branch valves 53 and 54 can be set to switch the branch valves 53 and 54 in accordance with the milling process diagram of each mill.

  The semolina particles dropped from the sieves 4 are collected and classified by the inner trough 5 and the outer trough 6. That is, semolina particles that have been sieved are collected in the inner trough 5 and outer trough 6, and further, the inner trough 5 communicates with one central drop port 7 and takes out the semolina particles that have passed through the sieve to the outside. In the outer trough 6, semolina particles having different particle sizes are connected to the upstream dropping port 8 that has passed through the large sieve and the downstream dropping port 9 that has passed through the small sieve, respectively. It is taken out.

  As described above, according to the present embodiment, when the sieves 4 with different meshes are removed from the sieve box 10, the handles 44 a and 44 b of the sealing means 42 a and 42 b attached to the lid member 31 are caused to be raised. The handle 44a, 44b is rotated and the clasps 44a, 44b are disengaged from the edge of the opening 10b, and the lid member 31 can be removed from the opening 10b. And the sieve 4 ... can be removed from the sieve box 10 by pulling out the sieve 4 ... along the guide rail 10a of the sieve box 10.

  On the other hand, when assembling the sieves 4 to the sieve box 10, after the plurality of sieves 4 are assembled in the sieve box 10, the body 32 is pressed against the rear end 4 k of each sieve layer 4. By holding the handle 44a, 44b of the sealing means 42a, 42b attached to the member 31 by hand and rotating the handle 44a, 44b, the stoppers 44a, 44b are engaged with the edge of the opening 10b, Further, by pushing down the handles 44a and 44b, the stoppers 44a and 44b are urged and fixed to the edge of the opening 10b by the spring 57. Thereby, the assembly | attachment removal operation to the sieve box 10 of the sieve 4 ... can be performed easily and rapidly.

  Then, the knob bolts 33a and 33b attached to the lid member 31 are rotated and adjusted so that the distance L between the main body 32 of the sieve fixing means 30 and the lid member 31 is increased. That is, the main body 32 extends in the front side direction of the sieve box 10 and the pressing force in the depth direction against the sieves 4 is strongly adjusted, the gap between the sieves 4 is substantially zero, and the pressing is sufficient. As a result, the pressure contact between the sieves 4... Becomes appropriate, and there is no “rattle”, and even under severe vibrations at the time of sieve selection, the sealing function works sufficiently and powder leakage can be prevented. Become.

  The upper stage (first stage) sieve fixing means 30a is formed with one overtail outlet 45a in the space between the main body 32a and the lid member 31a, and the middle stage (second stage). In addition to the discharge port 45a, the screen fixing means 30b is provided with discharge ports 45b formed by notching the rear half of the main body 32b to form two discharge ports for the overtail. In the stage) sieve fixing means 30c, in addition to the two outlets 45a and 45b, three outlets 45c formed by cutting out the front half of the main body 32c are provided in parallel. Therefore, the overhead from the upper (first stage) sieve layer 4a passes through the three outlets 45a formed from the upper stage to the lower stage as shown by the solid line arrows in FIG. It is guided to the outlet 3 and is opened from the middle (second stage) sieve layer 4b. As shown by the dashed arrows in FIG. 6, the bar tail passes through the two outlets 45b formed in the middle stage and the lower stage and is guided to the separated substance outlet 3, and from the lower (third stage) sieve layer 4c. This overtail passes through one discharge port 45c and is guided to the separated product discharge port 3 as shown by the one-dot chain line arrow in FIG. That is, the discharge ports 45a, 45b, and 45c have a separation function for guiding the overtail for each of the sieve layers 4a, 4b, and 4c.

  Further, the separator box 10 is provided with a separator discharge rod 46 for discharging the overtail on the downstream side thereof. The separator discharge rod 46 has a plurality of partition walls 47, 48 is disposed, and the upper sieve layer 4a, the middle sieve layer 4b, and the lower sieve layer 4c are gathered over the partition walls 47 and 48, and discharged from one outlet 3b. Or the upper sieve layer 4a, the middle sieve layer 4b and the lower sieve layer 4c are bisected and discharged from the two outlets 3a, 3c, or the upper sieve layer 4a, the middle sieve layer 4c Since there are a plurality of branch valves 53 and 54 that can select whether to discharge from the three outlets 3a, 3b, and 3c for each of the sieve layer 4b and the lower sieve layer 4c. According to the milling process diagram of the mill The switching of the branch valves 53 and 54 can be set, the type of machine, number and specifications may correspond appropriately even when different for each plant.

  The present invention can be applied to a purifier that uses both the vibrating action of the sieve and the action of the air flow that passes upward from the lower side of the sieve, and a sieve apparatus that is divided into a vibration system component and a non-vibration system component.

DESCRIPTION OF SYMBOLS 1 Purifier 2 Supply port 3 Separation object discharge port 4 Sieve 5 Inner trough 6 Outer trough 7 Central drop port 8 Upstream drop port 9 Downstream drop port 10 Sieve box 11 Leg 12 Support stand 13 Hollow rubber spring 14 Rolling prevention Vibration member 15 Unbalanced vibration generator 16 Cover body 17 Machine frame 18 Air distribution chamber 19 Support base head 20 Rectifier plate 21 Suction part 22 Opening and closing valve 23 Suction exhaust pipe 24 Seat part 27 Seat part 30 Sieve fixing means 31 Lid member 32 Main body 33 Knob Bolt 34 Stainless Steel Plate 35 Seal 36 Bolt 37 Coil Spring 38 Double Nut 39 Double Nut 40 Washer 41 Stopper 42 Sealing Means 43 Handle 44 Fastener 45 Discharge Port 46 Separator Drainage 47 Bulkhead 48 Bulkhead 49 Cross Girder Member 50 Product induction flap 51 Inlet 52 Raw material supply feeder 53 Branch 54 branch valve 55 switching operation knob 56 switching operation knob 57 spring

Claims (3)

A plurality of sieves stacked on top of each other are stored in an inclined manner in the sieve box, and the sieve box is supported on a support base serving as a non-vibrating element by at least four legs, and the sieve box Is connected to a vibration generator so that it can vibrate in the longitudinal direction of the sieve box, while the sieving material supply part is upstream of the sieving box, and the over-material discharge part is downstream of the sieving box. And a collecting device for collecting powder particles dropped from the sieve is provided below the sieve box, and further, air passed from the lower side of the sieve to the upper side is provided above the sieve box. In a purifier equipped with an air distribution chamber for suction,
The sieve box has a structure in which an opening is formed for each layer on the rear end surface of the sieve box so that the sieve can be inserted and removed from the opening, and a guide rail formed in the longitudinal direction in the sieve box is provided for each layer. In addition, the opening is provided with a sieve fixing means for sealing the opening while pressing the most downstream sieve among the plurality of sieves inserted from the opening. And
The sieve fixing means includes a main body that presses the rear end of the most downstream sieve, a lid member that seals the opening, and a screw fit between the lid member and the main body so that a gap is provided. A pair of knob bolts that can be adjusted in a wide and narrow manner and an elastic member interposed in a screw fitting portion between the lid member and the main body, and the lid member is sealed with the opening by manual operation. A purifier provided with a pair of sealing means that can be stopped or released.   Of the sieve fixing means, the sieve fixing means for the upper sieve layer is an over substance in the gap between the main body and the lid member so that the over substance is separated and dropped for each of the sieves in the upper, middle and lower layers. In the middle stage, the sieve fixing means is arranged in parallel with a discharge port cut out on the rear side of the main body in addition to the one discharge port. Further, the screen fixing means for the lower sieving layer is formed with three outlets for over-stuff by arranging the outlets cut out on the front side of the main body in addition to the two outlets. The purifier according to claim 1.   The sieving box is provided with a separation discharge basin for discharging the overlying material on the downstream side thereof, and the separation material discharge basin is provided with a plurality of partition walls with a predetermined gap therebetween, and Whether the upper, middle and lower over items are gathered further below the partition wall and discharged from one discharge port, or the upper, middle and lower step over items are divided into two and discharged from two discharge ports. Or a plurality of branch valves capable of selecting whether the over-stuff is separated and discharged from three outlets for each of the upper, middle, and lower tier sieves. Purifier.

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