JP6849230B2 - Dust collector - Google Patents

Description

The present invention sucks dust, dust, dust, solid fine pieces / fine particles, or fine solid dust substances linked to these with sweat / liquid / fat by air negative pressure and carries them together with an air flow. The present invention relates to a dust collector capable of collecting dust for a long period of time with little decrease in dust collecting power, which enables the trapping and removal of these dust substances on the way. In particular, it is useful as a device for collecting dust substances including metal powder generated when polishing and cleaning medals in amusement parks with a brush or the like. Technology that can also be used to remove dust substances generated by surface cleaning and polishing at factories of coins, pachinko balls, metal parts or metal products, or as a dust collection structure for household or commercial air suction type vacuum cleaners It is a technology that can be used.

An air suction type vacuum cleaner is widely used as a means for cleaning indoor dust substances such as dust, dust, dust, solid fine particles, and fine particles. Further, as shown in Patent Document 1, medals used for game machines in amusement parks have dust substances such as dust, sweat, dirt, dust, red dust, etc. adhered to them, so that a rotating brush or the like is used regularly or irregularly. Polished with. Then, these dust substances such as dirt, dust, red dust, dust, etc., which were rubbed by the rotating brush and adhered to the medal, are peeled off and sucked into air by a hollow dust collecting bag provided in the middle of the air flow. It was captured.
In addition, the surface of the medal made of stainless steel, brass, or shavings is scraped by rubbing the medal with a rotating brush, and by contact between the medals or the wall surface of the internal structure of the game machine. Debris and fine particles were generated, and these were also captured by the dust collection bag.

The surface of the dust collecting bag has fine ventilation holes, and the dust substance has a hole diameter that allows air to pass through but cannot pass through the ventilation holes. The dust substance is sealed in the bag, and only air is exhausted.
However, if it is used for a long time, the ventilation holes on the surface of the dust collecting bag are clogged with dust substances, the air suction power is reduced, the dust collecting power is also reduced, and early replacement is required. Polishing medals of game machines contains a large amount of fine particles and fine particles of medal metal, which causes strong clogging. Therefore, it is necessary to replace the dust collecting bag in the amusement park about once a month, and the replacement work takes time and effort.

Further, in Patent Document 2, a suction air flow containing a dust substance is detachably attached to a hollow dust cup in the middle of the suction pipe, and a plurality of small piece-shaped dust adsorption pieces in which an oil agent is supported in the dust cup are provided. A dust filter device having a structure in which a suction air flow is introduced as a cyclone flow from the upper part of a dust cup and an exhaust stack having a large number of exhaust ports opened in the center of the upper part is disclosed.

However, the invention of Patent Document 2 attempts to capture a dust substance by the adhesiveness of an oil agent on the surface of a dust adsorbing piece, and an air flow flows in from the upper inner circumference of the dust cup and swirls to adsorb dust. The air is exhausted from the upper center by adsorbing dust substances with the oil on the surface while floating and disturbing the pieces, but the air flow becomes a cyclone flow in the dust cup, so the flow velocity is low, and from top to bottom and It is judged that it is weak to trap dust substances between the fibers of the dust adsorption piece even if it flows from the bottom to the top, and it is judged that the dust substances are mainly trapped by the adhesive force of the oil agent on the surface. ..
In addition, the oil on the surface of the dust adsorbing piece adheres to the dust and dust and moves, and the oil, dust and dust also adhere to the inner surface of the dust cup. Therefore, it is necessary to clean the inner surface of the dust cup, which is troublesome. It is judged that this is the case.

JP-A-2017-55990 Japanese Patent No. 5130012

The problem to be solved by the present invention is to provide a dust collector that suppresses clogging of the dust collecting bag and has a high dust collecting power that can be used without replacement for several months.

The configuration of the present invention that solves this problem is
1) A dust collector that captures and removes dust, dust, dust, or fine particles of dust that are sucked by negative air pressure and carried along with the air flow from the air flow, and is a flow path of the suction air flow. A breathable bag body that allows air to pass through without passing dust substances is provided on the way, and the structure is such that the air flow is sent into the bag body and only air is discharged from the ventilation holes on the surface of the bag body. filled as multiple mutually each other as viewed from the light three-dimensional object of smaller volume than the bag volume having a three-dimensional network structure large 45 kg / m ³ or less of the resin porosity in the body, yet the shape of the light three-dimensional object A thin rectangular surface-shaped plate-like material is formed, and in order to improve shape retention, a lattice sheet having good air permeability is attached to one surface of the rectangular surface-shaped plate-like material, and air inside the bag is further formed. The stream is flowed in a zigzag manner through a large gap between multiple entangled lightweight three-dimensional objects, and dust substances in the air flow are introduced into the lightweight three-dimensional object to be captured and collected, and the dust collection rate is increased. Dust collector 2) Lightweight three-dimensional material is polyester / moda acrylic resin, polyolefin resin, nylon resin or polyester, which is characterized by reducing clogging of the vent holes of the bag body due to dust substances and maintaining the dust collecting power for a long time. The dust collector described in 1) above, which uses resin, 3) The dust material contains fine metal powder generated by polishing medals, coins, pachinko balls, or metal members, and is a lightweight three-dimensional object. those porosity of in the range of 6.0~40kg / ^{m 3,} the 1) or 2) the number of the dust collector 4) lightweight three-dimensional object to be filled into the body bag according is 10 or more, The dust collector according to any one of 1) to 3) 5) The ratio t / √s of the thickness t to the square root √s of the flat area s of the rectangular surface shape is 0.6 or less. ~ 4) The dust collector according to any one of 6) The internal volume V of the bag body in an inflated state by sending an air flow to the breathable bag body and the outer shape volume of a plurality of lightweight three-dimensional objects filled in the bag body. The value of v / V to the total volume v of the above is in the range of 0.2 to 0.6. The dust collector according to any one of the above 1) to 5) 7) Flow of air flow containing a dust substance. A part of the road wall in the middle of the road is opened, a door body that can be closed in an airtight manner is attached to the opening, and the air flow is applied to the bag body filled with a plurality of lightweight three-dimensional objects by opening the door body. The dust collector according to any one of the above 1) to 6) 8) a medal or a pachinko ball, which is detachably attached to the flow path so as to flow in from the mouth of the above and has a structure in which the door body is closed to the opening. In the amusement park where you use and play The dust collecting device according to any one of 1) to 7) above, which is used for air-sucking and collecting dust substances discharged by a polishing device.

According to the present invention, a breathable bag is ^{filled with a plurality of lightweight three-dimensional objects having a three-dimensional network structure made of resin of 45 kg / m 3} or less so as to be entangled with each other, whereby an air flow containing a dust substance is filled therein. A part of the air flow passes through the inside of the lightweight three-dimensional object, but most of it is on the surface of the lightweight three-dimensional object, and the direction of the air flow is changed along the surface between the meshed lightweight three-dimensional objects. While changing the direction of the air through a large gap, it flows in a zigzag manner through the large gap. Therefore, the pressure loss of the air flow is small. In addition, they are entangled and locked with each other to reduce the movement of the entire lightweight three-dimensional object.
On the other hand, dust substances such as metal powder, which have a large specific gravity and are carried along with the air flow even if the direction is changed along the plane on the surface of a lightweight three-dimensional object, have a large specific gravity even if the air flow changes. A strong inertial force and centrifugal force act to enter the lightweight three-dimensional object, and it comes into contact with the fibrous net of the three-dimensional net structure and is captured. Alternatively, fine but relatively large solid dirt, dust, dust, and dust in the air flow enter the lightweight three-dimensional object and are first captured by the three-dimensional net, resulting in a large area of capture deposits. ing. Metal powder and the like that have entered later are caught in this. Furthermore, even if there is metal powder that penetrates the lightweight three-dimensional object or is carried with the air flow, it is surely captured by any of the plurality of lightweight three-dimensional objects that subsequently enter, and arrives at the inner surface of the bag body to reach the bag. Less clogging of body vents.
Therefore, the inner surface of the bag is less likely to be clogged by metal powder or the like, the pressure loss is small, and efficient dust collection for a long time is possible.

By arranging a plurality of lightweight three-dimensional objects in an entwined manner inside the bag in this way, the area in contact with the air flow (the area where dust substances enter) is expanded, and the volume of the three-dimensional network space inside the bag is also large. The space for trapping dust substances is wide, the trapped dust substances do not block the air flow, and the ventilation holes of the bag body are less likely to be clogged with metal powder, etc., and the air flow is lightweight. A wide gap between three-dimensional objects remains, and dust can be collected for a long time with little pressure loss without closing the air flow.

Further, the porosity of the three-dimensional net of the lightweight three-dimensional object having the three-dimensional net structure of the present invention is made of resin, and ^{the one having a high porosity of 45 kg / m 3} or less has a low fluid resistance of the air flow through which the one has a high porosity, and the dust substance Improves capture. If the void space of the three-dimensional net is too large, it becomes difficult to capture fine dust, dust, and metal powder, and there is a width depending on the diameter and the number of fibers constituting the three-dimensional net of a lightweight three-dimensional object, but a resin is preferable. those manufactured porosity of 6.0~40kg / ^{m 3} is effective to dust material metal powder is seen in the medal coin polishing.

Further, it is preferable that the number of lightweight three-dimensional objects to be sealed inside the bag body of the present invention is 10 or more (approximately 10 times or more changes in air flow). In a small number of lightweight three-dimensional objects with a large volume, the number of times the air flow is converted is small, the contact area with the air flow is also small, and the dust collection effect and the used dust collection time are low.

Further, it is preferable to arrange the lightweight three-dimensional object of the present invention so as to entangle a plurality of thin plate-shaped objects because the number of conversions increases and the contact area with the air flow also increases. In particular, setting the ratio t / √s of the thickness t to the square root √s of the rectangular planar area s to 0.6 or less makes it easy to satisfy both the high dust collecting force and the low pressure loss.

Further, in the present invention, the value of the ratio v / V of the volume V in the inflated state of the bag body and the total volume v of the plurality of lightweight three-dimensional objects is set in the range of 0.2 to 0.6 for the air flow. A large gap between lightweight three-dimensional objects can be secured, the bending of the air flow can be facilitated, the air pressure loss can be small, and the dust collecting power can be in a good range. In this case, a ratio of 0.8 to 0.4 is a large gap space through which the air flow passes.

In addition, by detachably attaching a bag containing a plurality of lightweight three-dimensional objects to the air flow path, it is possible to quickly take out the used bag and replace it with a bag filled with a new lightweight three-dimensional object. Therefore, it is preferable.

FIG. 1 is a vertical cross-sectional view showing the overall structure of the embodiment. FIG. 2 is an explanatory diagram showing the polishing movement of the medal of the embodiment and the movement of the dust substance and the air flow. FIG. 3 is a structural explanatory view of the rotary brush polishing portion of the embodiment. FIG. 4 is an explanatory view showing the arrangement of the rotating brush and the grindstone plate of the embodiment. FIG. 5 is an exploded perspective view showing the rotating disk brush polishing portion of the embodiment. FIG. 6 is an explanatory view showing a transition point between the rotary brush polishing portion and the rotary brush polishing portion of the embodiment. FIG. 7 is an explanatory view showing a medal guide between the rotating brushes of the embodiment. FIG. 8 is a perspective view showing a bag body installation box with a door body provided in the middle of the flow path of the embodiment. FIG. 9 is a partially cutaway perspective view of the bag body installation box body in the state where the door body of the embodiment is removed. FIG. 10 is an exploded perspective view showing a mounting relationship between a bag body installation box body in which the door body of the embodiment is opened and a bag body in which a plurality of lightweight three-dimensional objects are enclosed. FIG. 11 is an explanatory view showing a mounting state of the bag body installation box body and the suction fan of the embodiment. FIG. 12 is an explanatory diagram showing the shape and dimensions of the lightweight three-dimensional object used in the examples and the three-dimensional net pattern on the surface thereof. FIG. 13 is an explanatory diagram of the air flow of the embodiment and the movement and entry of dust substances. FIG. 14 is a flow chart of a relationship test between the amount of dust material input and the wind speed of the suction flow in the example. FIG. 15 is a change diagram of a decrease in the wind speed of the suction flow when 0 g to 120 g of the dust substance as a result of the test of FIG. 14 is charged. FIG. 16 shows the case of the example from 0 g to 60 g in the same test, the case where the lightweight three-dimensional object is 10 sheets, which is half of the example, and the case of only the conventional hollow bag body in which the lightweight three-dimensional object is not enclosed in the bag body. It is a change diagram of the wind speed value of. FIG. 17 is a change in wind speed value of dust collection in another example using the lightweight three-dimensional object of the present invention as another material.

The "entangled filling" of a plurality of lightweight three-dimensional objects in the bag of the present invention means that the lightweight three-dimensional objects are combined with each other in random directions and the lightweight three-dimensional objects are rolled and pushed inside the bag. It means that it is enclosed with a small amount of. In addition, by being randomly arranged so as to mesh with each other, the lightweight three-dimensional objects come into contact with each other at an oblique angle or at a right angle, creating a large gap between the lightweight three-dimensional objects, and the air flow flows in a zigzag manner through the large gap. Is. It avoids the arrangement in which a plurality of lightweight three-dimensional objects are stacked or the arrangement in which the lightweight three-dimensional objects are parallel to each other, and 10 lightweight three-dimensional objects having a slightly smaller volume than filling a small number of lightweight three-dimensional objects having a large volume. It is preferable to fill more than one sheet.

The three-dimensional net structure of the lightweight three-dimensional object R refers to a fluffy structure in which many thin resin fibers are entangled in a branch shape in the left-right, up-down, and front-back directions and spread out. Further, in order to maintain the shape of the lightweight three-dimensional object R or to be incorporated so as to be entangled with the lightweight three-dimensional object R, a breathable lattice plastic sheet is attached to one surface of the lightweight three-dimensional object R to increase the rigidity. It is preferable to raise it a little. The porosity of the lightweight three-dimensional object R can be measured by the ratio of the weight of the lightweight three-dimensional object R to its volume kg / m ³ , and when the ratio is large, the amount of fibers is generally large and the porosity between the fibers is large. It is narrow and has a small porosity. It was determined that the ratio should be 59 kg / m ^{3 or less.} On the contrary, when the ratio is small, the number of fibers is small and the voids between the fibers are widened, and the porosity tends to be large. It is also possible to narrow the voids and enhance the capture of metal powder and the like. When there are many fine pieces, metal powder dust material, whether the value of low specific kg / m ³ porosity to use a larger weight solid object R, or the ratio kg / m ³ has a small fiber diameter be lower It is also possible to adopt one that is extremely fine and has a large number of fibers. The latter seems to be more effective. Further, it is preferable that the lightweight three-dimensional object R is plate-shaped, 6.0 to 40 kg / m ³ , and the v / V ratio is in the range of 0.2 to 0.6. For capturing metal powder, it is preferable that the number of lightweight three-dimensional objects R housed in the bag is large. Further, in the case of a dust substance containing a large amount of household waste and cotton waste, it is preferable to select a dust substance having a large porosity ratio (kg / m ³ ) and a small value.

Hereinafter, examples of the present invention shown in FIGS. 1 to 13 will be described with reference to the drawings.
This embodiment is an example of a dust collector G that collects dust by sucking dust substances generated by a medal polishing device KD used in a game hall under negative pressure. Also, use those made of polyester modacrylic plate of 50 mm × 50 mm × 20 mm of the positive surface shape thickness to vertical and horizontal thin lightweight three-dimensional object R in the present embodiment, in the ratio as 29 kg / ^{m 3} 1 A resin-made three-dimensional net-like material having a weight of about 1.45 g was used. The bag body F of this embodiment uses a non-woven fabric having a double four-layer structure using a replacement dust collection pack for a household vacuum cleaner (sales company: I'm Co., Ltd./Sojikko (registered trademark)). There is. This is an example in which 20 lightweight three-dimensional objects R having a size of 50 mm × 50 mm × 20 mm and a size of 50 cm ^{3 are enclosed in the bag body F.} The ratio of t / √ area s to this thickness t is 0.4. In addition, the internal volume of the inflated state of the bag F is in about 2,080cm ^3, v / V is 0.48.
Further, the medal polishing device KD vertically implants the brush bristles 12 on the upper surface of the outer periphery of the turntable 11 in a ring shape, and the fixed brush bristles are planted downward on the upper wall around which the brush bristles circulate. a polishing unit K ₀ by rotating disk brushes with the rotary disc 11 which is passed to a brush polishing in centrifugal force between the inserted medals in the central part and the brush bristles 12 and the fixed bristles 14, then up and down is passed through the medal between the rotating brush has a polishing section K ₁ by the rotary brush 2 to polish the medals, separation peeling to come dirt triturated with abrasive polishing section K ₁ by the rotating brush 2 This is an example of a structure in which the dust and medal polishing metal powder and the like are sucked by a negative pressure of air and captured in the bag body F by the dust collector G of the embodiment of the present invention, and the bag body can be replaced.

The reference numerals of the configurations of the examples of the present invention will be described.
G is the dust collecting device of the dust substance of the example, F is the air-tight hollow dust collecting bag body used in the example, FO is the air intake port of the bag body F, and FK is the air intake port. The locking plate of the bag body F having FO, R is a plate-shaped lightweight three-dimensional object of 50 mm × 50 mm × 20 mm with a weight of about 1.45 g, which is a three-dimensional net-like body made of polyester mod acrylic, and R ₁ is lightweight. A lattice sheet with good air permeability to slightly increase the rigidity attached to one surface of a square in order to improve the shape retention of the three-dimensional object R, B is a blower that generates a suction air flow, and B ₁ is an air suction port of the blower. , B ₂ is the exhaust port, B ₃ is the packing for airtightly crimping the _{blower B to the installation box C, B 4} is the mounting screw for attaching the blower B to the installation box C, AP is the flow path of the suction air flow, P. Is a suction tube forming the flow path AP, S is a suction guide tube having a shape in which the suction port for sucking the dust substance attached to the tip of the suction tube P with negative air pressure is widened, and C is provided in the middle of the flow path AP. Installation box to be attached so that the bag body can be replaced, CO is the bag body exchange port that opens the box upper wall of the same installation box C, CF is the airtight door body that is attached to the same mouth CO, CS is the door body CF The set screw that closes and fixes the CM, the bag locking groove that fixes the bag F in the installation box by inserting the locking plate FK of the bag F, and the CP is the door CF around the mouth edge of the replacement port CO. It is a packing for crimping with airtightness. AS is a wind speed measuring device using a _{thermocouple AS 1.}

(Explanation of the code of the polishing device)
KD is the polishing device, K ₀ is the polishing part by the rotating disk of the polishing device KD, K ₁ is the polishing part by the rotating brush of the polishing device KD, 1 is the transport path of the medal, 2 and 3 are the vertically opposed rotating brushes, 2 ₁ , 3 ₁ is the cylindrical roll on which the rotary brushes 2 and 3 are planted, 2 ₂ and 3 ₂ are the rotation shafts of the rotary brushes 2 and ₃ , and 2 3 and 3 ₃ are constant on the outer peripheral surface of the cylindrical rolls 2 ₁ and 3 _1. width at and bristles its width is large number of bristles such that the spiral, 2 _4, 3 ₄ in the rotation shaft 2 _2, 3 ₂ axially attached to the spur gear, mesh with each other to the rotary shaft 2 _{Rotate 2} , 3 ₂ in the opposite direction. 2 ₅ pivotally groove sheave to the output shaft of the motor 5, 3 ₅ cars axially mounted to the rotating shaft 3 ₂ belt, the transmission belt for transmitting the power of the motor 5 to the belt wheel 3 ₅ 4, 5 A motor 6 for rotating the rotary brushes 2 and 3 is a discharge chute portion of the transport path 1. 8 is a plate-shaped brush grindstone body, thickness 0.7 mm × length 178 mm × width 100 mm, the material is made of stainless steel, and the weight is about 55 g. Brush grindstone plate 8 ₁ is on the lower surface of the brush grindstone plate 8. Grindstone layer formed by attaching sandpaper, 8 ₂ is the opening of the air passage, 8 ₃ is the rotating brush chamber wall which is a limiting member, 8 ₄ is the rotating brush chamber wall which buffers the front and rear ends of the brush grindstone plate 8 ₃ mounting the elastic body, 8 ₅ is the opening for air intake provided in the ceiling wall of the rotating brush chamber wall 8 _3.

In the figure, 10 is the rotating disk type primary cleaning device in the polishing unit _{K 0,} 11 is the rotary disc 11 ₁ medal receiving surface of the central region of the rotating disk 11, 11 ₂ rotation axis of the rotating disk 11, 11 ₃ belt pulley wheel which is pivotally attached to the rotating shaft 11 _2, 12 the lower bristles of the flocking upward in the outer peripheral region of the upper surface of the rotating disk 11 cyclic, 13 device casing 13 ₁ medal m inlet, 13 ₂ fixed frame to vegetation towards the upper bristles of the peripheral region of the upper surface of the rotating disk 11 in the downward direction, 13 ₃ annular casing portion to keep the rotary disc 11, 14 on the lower surface of the fixed frame downward vegetation the upper bristles 15 motor for rotating the rotary shaft 11 ₂ of the rotary disc 11, 15 ₁ transmission belt 16 is conveying path opened part of the annular casing portion 13 ₃ of the apparatus casing 13 It is a medal outlet for sending the medal m to 1.
Further, reference numeral 20 denotes a pair of upper and lower medal guides arranged in parallel with the transport path 1 so as to be separated from each other in the front and rear of the rotary brushes 2 and 3 of the transport path 1 by a predetermined space. It is intended to be transported horizontally so as not to tilt. Reference numeral 21 denotes a tip portion of the rotating brushes 2 and 3 of the medal guide 20 that have entered the rotation locus of the tip of the brush bristles, and 22 is a substantially triangular projecting portion that protrudes from the tip portion 21. The pitch and the length of the protrusions are different from those of the protrusions 22 of the medal guides 20 before and after entering the 3.

(Operation of polishing device KD)
The polishing section K _0, medals m used as shown in FIG. 2, 5, 6 are introduced at random from inlet 13 ₁ of the rotating disk type primary cleaning device 10. Inserted medals m is received by the medal receiving surface 11 ₁ of the central region of the rotating disk 11. The rotating disk 11 is rotated at high speed by the motor 15, _{and the medal m placed on the medal receiving surface 11 1} of the rotating disk 11 and its outer peripheral region is subjected to centrifugal force due to rotation, and the medal m is radially (spiral locus). in with it) are accelerated, is bound to also the inner surface of the annular casing 13 ₃ passes through between the lower side brush bristles 12 and the fixed frame 13 and _second upper bristles 14 of the rotary disc 11, the brush bristles 12, It is brushed by 14 and is temporarily cleaned, and medals are sent out to the transport path 1 from the medal delivery port 16 at an appropriate timing.
The medal m is primarily and considerably cleaned by the rotary disk type primary cleaning device 10.

Medals m fed to the transport path 1 is sent to the polishing unit _{K 1} by the rotation brush as shown in FIG 1,2,3,4,6. Here, the upper and lower pairs of rotating brushes 2 and 3 are rotated.
The rotation of the rotating brushes 2 and 3 is shown in FIG. And transmission of the sheave 2 ₅ attached to the output shaft of the motor 5 and the rotation shaft 2 _2, 3 ₂ to the mounting groove sheave ₃₅ of the rotary brush 2 and 3 the transmission belt 4, the upper and lower rotary brushes 2 and 3 The pair of upper and lower rotating brushes 2 and 3 are rotated in opposite directions by the meshing of the spur gears 2 ₄ and 3 ₄ axially attached to the rotating shafts 2 ₂ and 3 ₂ of the cylindrical rolls 2 ₁ and 3 _1.
The upper and lower medal guides 20 regulate the medals in the transport direction by preventing the medals from deviating from the transport direction even if an upward or downward force is applied by the rotating brushes 2 and 3. In addition, in the case where the protruding portion 22 of the tip portion 21 of the medal guide 20 is comb-shaped, the brush bristles come into contact with the comb-shaped tip portion 21 and the protruding portion 22 and adhere to the brush bristles. It is designed so that it can be peeled off like a comb and released well into the air. Moreover, the brush bristles are moved by the comb-shaped protruding portion 22 at the tip of the medal guide 20 so as to swing the brush bristles in various directions, and the movement of the brush bristles also has the effect of shaking off the dust adhering to the brush bristles. It occurs and enhances the separation power.

The medal m sent into the transport path 1 passes through the transport path 1 between the _{brush bristles 2 3} , 3 ₃ of the vertically opposed rotating brushes 2, 3 of the _{polishing portion K 1 , and the upper and lower brush bristles 2 3} , 3 _{The tip of the brush bristles is pierced into the uneven corners of the front and back surfaces of the medal m by 3} , and the dust, dirt, and particles that remain without being removed by the primary cleaning in these corners are removed from the brush bristles 2 ₃ , 3 ₃ and scraping with bristles peeling them deposits from the medal m, also to scatter and release the periphery of the peel was an elastic force due to the brush bristles 2 _3, 3 ₃ variants.
By providing two sets of the upper and lower rotating brushes 2 and 3 along the transport path 1, the secondary cleaning by the rotating brushes 2 and 3 is sufficiently performed.

At the beginning of use, the brush bristles 2 ₃ , 3 _{3 of the rotating brushes 2 and 3 have a cutting surface at right angles to the brush bristles 2 3} , 3 ₃ and have an edge, but they are used. If this is done, dust and dirt will adhere to the edges, and the edges will become rounded, reducing the peeling power of the brush bristles.

The polishing section K ₁ using the rotary brush 2 and 3 of the polishing apparatus KD to apply the present embodiment, the brush bristles 2 _3, 3 ₃ of dust and dirt adhering to the edge to peel off. Also, the rounded edges of the brush bristles are polished to restore the edges so that they have edges (however, the outer diameter of the tip of the brush bristles tends to be slightly shorter).
As a result, the peeling force of the brush bristles can be maintained high by removing the deposits on the tips of the _{bristles 2, 3} , 3 and _{3 and recovering the edges.}

Additionally, the optionally brush grinding plate 8 resting on the polishing portion K ₁ in the upper two pairs of rotating brushes 2, the lower surface of the grinding wheel layer of bristles 2 ₃ of the rotary brush 2 is rotated brush grinding plate 8 8 in contact with _1, by polishing the bristles tips of the bristles 2 ₃ to restore the edge. If the brush bristles 2 ₃ rotate several times, they will _{surely come into contact with the grindstone layer 8 1} and polish the tips of the brush bristles to restore the edges. The brush grindstone plate 8 tries to move in the front-rear direction from the rotating brush 2 due to brush friction, but the elastic body 8 ₄ suppresses collision noise and vibration with less. Further, and with less noise and vibration vertical sway even if the elastic body 8 ₄ gentle support.

Two pairs of rotary brushes 2,3 dust, dirt, particles and the brush grindstone plate 8 is peeled from the surface of the medal m was released into the air, in the brush bristles 2 _3, 3 ₃ polishing of the vertical brush grinding plate The generated dust material falls to a position below the rotating brushes 2 and 3.

The dust substances that have fallen below the rotating brushes 2 and 3 and the dust substances that are scattered or drifted in the surrounding space by the rotating brushes 2 and 3 are dirt, dust, dust, sweat, and fat scraped off by the brush and their fine particles. Clumps, medal polishing powder or fine debris, brush pieces, etc.

When the blower B of the dust collector G of the embodiment is operated, the suction guide pipe S is installed below the rotating brushes 2 and 3 via the flow path AP of the installation box C and the suction pipe P, and opens above. Negative air pressure is generated, and dust substances that fall from or float around the rotating brushes 2 and 3 are sucked, and the bag body F is passed through the air intake port FO of the bag body F in the suction pipe P and the installation box C. It is sucked in.

An air flow containing a dust substance flows into the bag body F, and as shown in FIG. 13, the air flow flows in a zigzag manner through a large gap between a plurality of entangled lightweight three-dimensional objects R. To go. Then, the air flow hits the lightweight three-dimensional object R and diverts the flow along the plane. At the turning point, metal powder, fine metal debris, dirt lumps, and granular solids with large specific gravity cannot be turned due to the large inertial force or centrifugal force, and enter the lightweight three-dimensional object R. Then, it is captured by the three-dimensional net of the lightweight three-dimensional object R. Alternatively, metal powder and metal debris are trapped in the dust, dust, dust, and solid matter that have been previously captured and adhered. On the other hand, the air flow reaches the inner surface of the bag body F while bending and turning the large gap in a zigzag manner, is exhausted to the outside through the ventilation holes on the inner surface, and is discharged to the outside air from _{the exhaust port B 2 of the blower B.} Will be done.

The bag body F filled with 20 lightweight three-dimensional objects R of this example could be used for about 4 to 5 months without replacement. The lightweight three-dimensional object R in the bag body F captured a large amount of oxidized metal powder and adhered it black. On the other hand, the conventional hollow bag F alone, in which the lightweight three-dimensional object R is not filled in the bag F, becomes clogged in about one month and must be replaced.

In the replacement of the bag body F in this embodiment, the set screw CS of the door body CF of the installation box C shown in FIGS. 8 and 10 is removed, the door body CF is rotated to open the bag body exchange port CO, and the bag is replaced. The locking plate FK of the body F is pulled out from the bag body locking groove CM of the installation box C, and the used bag body F is removed from the installation box C.
After that, the new hollow bag body F is filled with 20 new lightweight three-dimensional objects R so as to bite into the bag, and the bag body F's locking plate FK is put into the bag through the bag body exchange port CO of the installation box C. After inserting into the body locking groove CM, close the door body CF, and attach the door body CF in an airtight manner with the set screw CS to complete the bag body replacement.

The dust collecting force of the dust collecting device G of the present invention can be applied only to the conventional hollow dust collecting bag F that is not filled with the lightweight three-dimensional object R, or to the bag F having a size of 50 mm × 50 mm × 20 mm as in this embodiment. Dust substances are collected from the suction tube P separately for the case of using a bag body filled with 20 lightweight three-dimensional objects R and the case of using a bag body filled with the same lightweight three-dimensional object R in half the number of 10 pieces. Add 5 g over 10 seconds, and within 20 seconds after adding 5 g, measure the wind speed of the suction air flow with the wind speed measuring device AS using the _{thermoelectric pair AS 1 as one cycle, and add 24 times until the total amount reaches 120 g.} The wind speed was measured, and the state of clogging of the bag body F was indirectly measured. The test method is shown in FIG. The test results of the weight g of the charged dust material and the wind speed (M / sec) of the suction flow are shown in FIGS. 15 and 16.

As the dust substance used in this test, the dust substance itself collected by the medal polishing device of the amusement park was used. This dust substance contains a large amount of fine powder of medals, is oxidized and is a black powder, and 1 g of this dust substance corresponds to the amount generated for one day in the polishing apparatus KD. Therefore, 60 g of dust material is an amount for about 2 months, and 120 g is an amount for about 4 months.

The test results are shown in FIGS. 15 and 16. When the lightweight three-dimensional object R of this embodiment is 5 cm × 5 cm × 2 cm and 20 pieces are filled in the bag body F, the wind speed at the stage when 120 g of the total dust substance is added is about 15 M / sec and can still be used (less clogging). State). As can be seen from the test results up to 60 g in FIG. 15, the wind speed is 10 M / sec only with the conventional hollow bag body F at the 60 g input amount (two-month usage amount), and the lightweight three-dimensional object R of the example is used. The wind speed when 20 pieces were filled was 19 M / sec, and the wind speed when 10 pieces of the same lightweight three-dimensional object R were filled was 15 M / sec.
As can be seen from this, in the examples, even at 60 g (used for 2 months), the decrease in wind speed is small, the decrease in dust collecting power is small, and the clogging of the bag body F is small. In this example, v / V≈0.48. Next, in the case of 10 reference examples in which the lightweight three-dimensional object R is half of the embodiment, v / V≈0.24, and it can be seen that the bag body F is still clogged more than in the embodiment. However, the clogging has not progressed so much as compared with the conventional hollow bag body F alone. From this, it was judged that even if the volume ratio v / V is 0.2 to 0.6, the clogging is less than that of the conventional bag body F alone, and the effect is sufficiently secured. From the 60 g data in FIG. 16, v / V is 0.48 at 18.5 M / sec, 0.24 at 15 M / sec, and 0.0 for the bag only at 10.0 M / sec, with an upper limit of 21 M / sec to 13 M / sec. It was estimated that a v / V of about 0.2 to 0.6 is practical in sec.

In the case of the conventional hollow bag body F, the wind speed at a total input amount of 30 g for one month is 14 M / sec, but in the example corresponding to this wind speed, the total input amount is equivalent to about 160 g for 5.3 months (conventional). Can be used 5.3 times longer than Even in the case of filling 10 pieces of the reference example of another example of the present invention, the total input amount is about 70 g for about 2.3 months, and it can be used 2.3 times longer than the conventional one.
As described above, in the present invention, the bag body F is less clogged and can be used 2 to 5 times longer than the conventional bag body F alone without clogging. In addition, since there is little clogging, high dust collecting power can be maintained for a long time. Furthermore, the work of replacing the bag body has been greatly reduced.

The drawing of the wind velocity value shown in FIG. 17 is a further example of the present invention, in which a polyolefin resin having a fine diameter and a large number of fibers is used as a material for the lightweight three-dimensional object R to form a cubic net. , outside geometry of 50 mm × 50 mm × 20 mm thickness, the ratio in per 0.6g was 20 filled ones 12.5 kg / ^{m 3} in the bag body F of the embodiment, also the same v example The same dust substance in 5 g units from 0 g to 160 g (equivalent to 5.3 months) in the same procedure as in FIG. 14 for the lightweight three-dimensional object R with / V = 0.48 and t / √s = 0.4. This is an example in which the wind speed value is measured every 5 g.
In this example, the wind speed was 17.5 M / sec when the input amount was 120 g and 15 M / sec when the input amount was 160 g, which was the best with the least clogging among the examples of the present invention. In this example, it was presumed that the good cause was that the diameter of the main fiber was finer and the number of fibers was larger than that of the example. Further, from this, it was found that even if the porosity is a lower value of 6.0 kg / m ^3, it may be possible to prevent clogging to some extent when the value of v / V, dust substances, etc. are taken into consideration.

Judging from the ratio of the void ratio (kg / m ³ ) of the lightweight three-dimensional object R and the data of the wind velocity M / sec in the ^{above example, the ratio of 29 kg / m 3} is about 15 M / m 3 from FIG. 15 in the data on the 120th day. in more sec, the wind speed of 30 day examples of the ratio 12.5 kg / ^{m 3,} only the ratio 40 kg / ^{m 3} in the bag from is about 17.5 m / sec from 17 (1 month) 13. Proportional estimation calculation that can exceed 0 M / sec was possible. Further, when the ratio is low, v / V = 12.5 kg is about 19 M / sec on the 60th day from FIG. 17, and when the bag body alone (v / V = 0) is 10 M / sec, the ratio is high. It is estimated that even 6 kg / m ³ can exceed 13.0 M / sec, and if the ratio range is 6 to 40 kg / m ³ , it can be estimated that the wind speed can exceed 13 M / sec, which is a practical range.

The present invention can be used for polishing and cleaning industrial products of small metal plates having irregularities and engravings on the surface of thin plates, in addition to medals, pachinko balls or coins used in amusement stores. Furthermore, it can be used as a dust collector / dust bag for household / commercial vacuum cleaners.

G Dust collector of the example F Bag body FO Air intake port FK Locking plate B Blower B ₁ Air suction port B ₂ Exhaust port AP Flow path P Suction pipe S Suction guide pipe C Installation box CO Bag body replacement port CF door Body CS Set screw CM Bag body Locking groove AS Wind speed measuring device AS ₁ Thermocouple K ₀ Polishing part by rotating disk K ₁ Polishing part by rotating brush KD Polishing device R Lightweight three-dimensional object R ₁ Lattice sheet m Medal 1 Transport path 2, 3 Rotating brush 2 ₁ , 3 ₁ Cylindrical roll 2 ₂ , 3 ₂ Rotating shaft 2 ₃ , 3 ₃ Brush bristles 2 ₄ , 3 ₄ Flat gear 3 ₅ Belt wheel 4 Transmission belt 5 Motor 6 Discharge chute 8 Brush Abrasive plate 8 ₁ Abrasive layer 8 ₂ Opening 8 ₃ Rotating brush chamber wall which is a limiting member 8 ₄ Elastic body 8 ₅ Opening 10 Rotating disk type primary cleaning device 11 Rotating disk 11 ₁ Medal receiving surface 11 ₂ Rotating shaft

Claims (8)

A dust collector that captures and removes dust, dust, dust, or fine particles of dust that are sucked by negative air pressure and carried along with the air flow from the air flow, and is in the middle of the flow path of the suction air flow. A breathable bag body that allows air to pass through without passing dust substances is provided, and the structure is such that the air flow is sent into the bag body and only air is discharged from the ventilation holes on the surface of the bag body, and inside the bag body. A plurality of lightweight three-dimensional objects having a three-dimensional net structure made of resin with a large void ratio of 45 kg / m ³ or less and having a volume smaller than the bag body volume are filled so as to be entangled with each other, and the shape of the lightweight three-dimensional object is thick. It is a thin rectangular plate-shaped object, and in order to improve shape retention, it has a structure in which a lattice sheet with good air permeability is attached to one surface of the rectangular surface-shaped plate-shaped object, and further, the air flow inside the bag is made to flow. It flows in a zigzag manner through a large gap between multiple lightweight three-dimensional objects filled so as to be intertwined, and dust substances in the air flow are made to enter the lightweight three-dimensional object to be captured and collected, and the dust collection rate is increased. A dust collector that reduces clogging due to dust substances in the ventilation holes and can maintain the dust collecting power for a long time. The dust collector according to claim 1, wherein the material of the lightweight three-dimensional object is a polyester / modal acrylic resin, a polyolefin resin, a nylon resin, or a polyester resin. The dust substance contains fine metal powder generated by polishing medals, coins, pachinko balls, or metal members, and the porosity of the lightweight three-dimensional object is in the range of ^{6.0 to 40 kg / m 3.} , The dust collector according to claim 1 or 2. The dust collector according to any one of claims 1 to 3, wherein the number of lightweight three-dimensional objects filled in the bag is 10 or more. The dust collector according to any one of claims 1 to 4, wherein the ratio t / √s of the thickness t to the square root √s of the flat area s of the rectangular planar shape is 0.6 or less. The value of the ratio v / V of the internal volume V of the bag body in the inflated state by sending an air flow to the breathable bag body and the total volume v of the outer shape volumes of a plurality of lightweight three-dimensional objects filled in the bag body. The dust collector according to any one of claims 1 to 5, wherein the dust collector is in the range of 0.2 to 0.6. A part of the road wall in the middle of the flow path of the air flow containing dust is opened, a door body that can be closed in an airtight manner is attached to the opening, and the door body is opened and filled with a plurality of lightweight three-dimensional objects. The dust collection according to any one of claims 1 to 6, wherein the door body is detachably attached to the flow path so that the air flow flows into the bag body from the mouth of the bag body, and the door body is closed to the opening. apparatus. The dust collector according to any one of claims 1 to 7, which is used for air-sucking and collecting dust substances discharged by a polishing device in a game field where a medal or a pachinko ball is used for playing.

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