JP3229535B2 - Rake for dust removal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rake used in a dust remover for catching and removing dust floating in a waterway.

[0002]

2. Description of the Related Art As a dust removing device as described above, there is a device provided with a bar screen provided in a water channel such as water and a drainage channel, and a plurality of movable rakes for scraping up dust along the screen. is there. The screen is configured such that vertically extending plate-like members are arranged at equal intervals in the water channel width direction. Miscellaneous garbage flowing into the waterway is locked on the screen, swept up by a movable rake traveling around, and dropped on a conveyor belt conveyor to be removed. The movable rake has a comb-like structure in which a plurality of convex portions projecting forward and backward are formed.

FIG. 8 is a perspective view showing the entire configuration of a dust removing device. A dust removing device A includes a front screen 11 and a main screen 12 provided over the width of a water channel W, and a main screen 1.
2, a pair of left and right side frames 25 for supporting both ends of the receiving girder 24, and trash scraping pieces for scraping up dust along the avant-garde screen 11 and the main screen 12. A plurality of rows of rakes 13 arranged in a row and a plurality of these rows of rakes 1
3, a lower guide plate 20, an upper guide plate 21, and a pair of left and right endless rake chains 14 for supporting both ends of the plurality of rows of rakes 13.

The pair of endless rake chains 14
Are engaged with a pair of sprockets 16 fixed to both ends of the drive shaft 15. A sprocket 17 adjacent to one sprocket 16 and fixed to the drive shaft 15 is connected via a drive chain 18 to a drive device 19 composed of a speed reducer and a motor. Then, when the driving device 19 is driven, the driving shaft 15 is driven to rotate, and the pair of endless rake chains 14 and 14 are run, and the screen 1 is driven.
The trash caught by the rakes 1 and 12 is scraped up by the rake 13.

A lower guide plate 20 and an upper guide plate 21 which is continuous at an angle to the lower guide plate 20 are installed along the movement trajectory of the rake 13. The scraped-up garbage is in the lower guide plate 2
0 and the upper guide plate 21. Then, below the upper end of the upper guide plate 21, FIG.
The hopper 22 is installed as shown in FIG. 1, and a garbage unloading conveyor 23 is installed below the hopper 22, and the scraped-up dust is unloaded outside.

Conventionally, the main parts such as the rake 13, the main screen 12, the receiving girder 24, the guide plates 20, 21 and the side frames 25 are made of steel and fixed by welding and bolting.

[0007]

The dust removing apparatus using the rake made of steel as described above has the following problems to be solved. (1) Since the weight is large, the strength of the side frame 25 and the chain 14 that support it, and the ability of the drive motor 19 that drives them are increased, so that the device becomes large as a whole, and the device cost increases and maintenance is performed. And a lot of labor is required for on-site installation. (2) Corrosion resistance and abrasion resistance are required in the usage environment, and if the requirements are covered by the material itself, the cost of the material will increase. Corrosion easily progresses from the coating exfoliation part due to etc.
In addition to lowering the strength and function of the device, it also required time and effort for maintenance. (3) Noise or vibration is generated due to contact with hard dust or other metal parts, which is a problem in environmental hygiene. (4) Rake 13 and screen 11, 1
If it is caught between two, it will be deformed. Therefore, the present invention is lightweight, has high corrosion resistance, does not easily generate noise and vibration,
Moreover, an object of the present invention is to provide a rake for a dust removing device which is flexible and hard to deform, and as a result, does not require maintenance.

[0008]

Means for Solving the Problems The present invention has been made to solve the above problems, and the invention according to claim 1 can run along a bar screen provided in a water channel by an endless chain. A rake for a dust removing device installed in a bar, which has a scraping portion for scraping up dust trapped on the bar screen, and a support end attached to the chain, and is reinforced with a plastic material or metal. It is constituted by a composite plastic material containing wood Rutotomo
In addition, a plurality of segments divided in the width direction of the dust removal device
A rake for a dust removing device, wherein the rake is integrally formed by using a filled plastic material . By using plastic, weight reduction can be achieved and high corrosion resistance can be imparted. Further, it is possible to provide a rake for a dust removing device that absorbs noise and vibration, is flexible and hardly deformed, and as a result, does not require maintenance. Change
Segmentation reduces the required template
As a result, the cost of the mold is greatly reduced. Also, dust removal equipment
The width of the rake, that is, the length of the rake,
But by changing the number of segments
Can rearrange and remake molds
Time is saved. In addition, using filled plastic
By integration, it is easy to integrate
Plastics such as lightweight, high corrosion resistance, low noise and low vibration
The characteristics of using the tool are maintained.

According to a second aspect of the present invention, there is provided a ring-opening weight of a tricyclic or higher norbornene-based monomer modified with an elastomer, which is a two-part mixed molding material capable of molding the plastic material at room temperature in a short time. The rake for a dust removal device according to claim 1, characterized in that the rake is made of an elastic resin material having an elongation at break of 10 to 100% and formed by uniting.
Since the norbornene-based polymer modified with such an elastomer has both mechanical strength and flexibility, a rake formed of this material has excellent impact resistance. Moreover,
The specific gravity of the material is about 1.05 g / cm ³ or less, which is relatively light among plastics, and also has impact resistance, water resistance, corrosion resistance,
It is a material with excellent chemical resistance.

This material has the advantage of being able to withstand impact and corrosion, and has the advantage that it is hardly deformed or damaged even when subjected to a large external force during installation work at the site, and at the same time, reduces the overall weight. Therefore, there is an advantage that the construction is easy. This material has a heat deformation temperature of 100 ° C. or higher, preferably 120 ° C. or higher, and an elongation at break of 10 to 10.
0%, preferably 15-80%,
Usually, the flexural modulus is 150 kg / mm ² or more, preferably 17 kg / mm ² or more.
0 kg / mm ² or more.

Examples of the norbornene monomer having three or more rings include tricyclics such as dicyclopentadiene and hydrodicyclopentadiene, tetracyclics such as tetracyclododecene, and pentacyclics such as tricyclopentadiene. And heptacyclic bodies such as tetracyclopentadiene. Of course, these alkyl-substituted or alkylidene-substituted products may be used. These norbornene monomers may be used alone or in combination of two or more. Among these monomers, tri- to pentacyclic ones are preferable in terms of impact resistance, heat distortion temperature, and the like, and those containing 50% by weight or more of dicyclopentadiene are particularly preferable in terms of economy.

2-norbornene and 5 which can be ring-opened polymerized together with at least one of the above tricyclic or higher norbornene monomers.
-Methyl-2-norbornene, 5-ethylidene-2-norbornene-based monomers, or monocyclic cycloolefins such as cyclobutene, cyclopentene, cyclopentadiene, cyclooctene, cyclododecene and the like are used without impairing the object of the present invention. May be. On the other hand, examples of the elastomer used in the present invention include natural rubber, polybutadiene, polyisoprene, styrene-butadiene copolymer, styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, and block copolymers of these. Combined hydride,
Examples thereof include an ethylene-propylene-diene copolymer, polychloroprene, and an acrylonitrile-butadiene copolymer. Among them, a hydrocarbon elastomer is awarded.

The proportion of these elastomers is such that the elongation at break of the norbornene elastomer polymer is 10 to 10.
100%, preferably 15 to 80%, which can be appropriately determined.
It is 3 to 12% by weight, preferably 5 to 10% by weight. If the amount of the elastomer is too small, the elongation is reduced. As a result, the flexibility becomes insufficient and the impact resistance becomes poor, and furthermore, such a material makes it impossible to produce a rake having a flexible structure. On the other hand, when the blending amount of the elastomer increases, the elongation increases, but on the other hand, the flexural elasticity decreases and the rigidity required for the rake cannot be maintained.

In order to obtain a norbornene polymer modified with an elastomer, a reaction molding method such as a reaction injection molding, a resin injection method, and a casting method is generally used.
In these methods, a reaction stock solution containing a norbornene-based monomer, an elastomer, and a catalyst for ring-opening polymerization is supplied into a mold, a wooden mold, a sand mold, a resin mold, or the like, and is subjected to ring-opening polymerization there.

In the reaction, fillers, pigments, colorants,
By blending various additives such as antioxidants, the characteristics of the screen of the present invention can be modified. These additives are mixed in advance with one or both of the reaction stock solutions. Fillers include inorganic fillers such as short glass fibers, glass particles, carbon black, talc, calcium carbonate, mica and the like. As the antioxidant, there are various antioxidants for plastics / rubbers such as phenol type, phosphorus type and amine type. These antioxidants may be used alone or in combination. The mixing ratio is 0.5% by weight or more, preferably 1 to 3% by weight, based on the norbornene-based polymer.

According to a third aspect of the present invention, the plastic material is made of a thermoplastic resin such as an ABS resin or a polypropylene resin having an elongation at break of 10 to 100% and having high elasticity and toughness. The rake for a dust removing device according to claim 1, characterized in that: ABS resin,
Thermoplastic resins such as PP resins are widely used for general household goods, automobile parts and the like, but various grades of materials are commercially available depending on the purpose. Suitable for the present invention are those having an elongation at break of 10 to 100%, preferably 15 to 80%, and are produced mainly by injection molding.

According to a fourth aspect of the present invention, the above-mentioned filling plus
Two-component mixing molding that can mold tic materials at room temperature and in a short time
Tricyclic or higher norm modified with elastomer material
Elongation at break formed from ring-opened polymer of bornene monomer
Beauty Ru Ah in filtration apparatus for rake according to any one of claims 1 to 3, characterized in that <br/> was a rich resin material in the elastic 10 to 100%.

By using this material, room temperature and short time
, The work load is greatly reduced.
Work at the site where the dust removal equipment is installed
It is also easy. Molded with the same material as the segment
By doing so, good adhesion can be achieved and strong integration can be performed.

According to a fifth aspect of the present invention, in the above-mentioned scraping section,
Is protruding from the connecting part extending in the width direction of the dust removal device and the beam part
And a plurality of segments.
Or a connection unit having two or more of the scraping pieces as a unit.
5. The method according to claim 1, wherein
Ru Oh in the dust removal system for rake as claimed in any one.

In this case, since the connecting portions are joined, the joining area is
Makes the work easier. Plastic integration
The flow of resin filling is easy even when using
Become.

[0021] The invention according to claim 6, of claim 1, <br/> to 4, characterized in that the said segments are formed of plastic filling space penetrating along the width direction of the filtration apparatus A rake for a dust removing device according to any one of the above. Since the plastic filled in the penetrating filling space becomes a mandrel, it has high strength against bending and twisting. The invention according to claim 7, the plastic filling space is filtration apparatus for rake according to claim 6, wherein the cross section is a polygon. Torsion torque can be received at the sides of the polygon.

[0022] The invention according to claim 8, rake for filtration apparatus according to any one of claims 1 to 7, characterized in that the plastic filling the recesses in adjacent faces are formed together in the segment It is. With this recess, the connection strength between the segments can be increased. Also,
The shape of this portion can be made into a keyway shape to contribute to receiving the torsional torque. The invention according to claim 9 is the rake for a dust removal apparatus according to claim 8 , wherein the recess has a polygonal cross section.

According to a tenth aspect of the present invention, there is provided the rake for a dust removing apparatus according to any one of the first to ninth aspects, wherein the filled plastic material and the reinforcing metal material are used together to be integrated. The service life of the rake is greatly improved. According to an eleventh aspect of the present invention, there is provided an endless chain.
Can travel along the bar screen provided in the waterway
A rake for a dust removal device to be installed,
The scraper that scrapes the garbage trapped in the
With a support end attached to the chain
Plastic or composite plastic containing reinforcing material such as metal
Tsu is constituted by click member from a plurality of segments, a dust collector for rake you characterized by irregularities engage each other in adjacent surfaces to one another of said segments are formed. 1
The torsional torque applied to one segment is transmitted to the adjacent segment via the unevenness, and as a result, a structure resistant to torsion is obtained.

According to a twelfth aspect of the present invention, there is provided a rake for a dust remover installed so as to be able to run along a bar screen provided in a water channel by an endless chain, and the trash trapped on the bar screen. A rake for a dust removing device, comprising: a rake section for rake-up of a rake; and a support end attached to the chain, wherein a protrusion is provided on a surface of the rake-up surface. The invention according to claim 13 is:
A dust remover comprising the dust rake according to any one of claims 1 to 12.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rake for a dust removing device according to the present invention will be described below with reference to the drawings. The rake 13 has a scraping section 1 for scraping up the trash trapped on the bar screens 11 and 12, and a support end 2 attached to a chain 14, and as shown in FIG. A plurality of segments 3 and 4 divided in the width direction are integrally formed using plastic. The segments 3 and 4 are formed of a plastic material such as a ring-opened polymer of a norbornene-based monomer having three or more rings modified with an elastomer. This is a two-component mixed molding material that can be molded in a short time at normal temperature, and preferably has an elongation at break of 10 to 100% after molding.
Which is rich in elasticity.

In this embodiment, the types of the segments include an end segment 3 and a scraping segment 4 constituting the scraping unit 1. As shown in FIG. 2, the scraping segment 4 has a shape in which a rectangular parallelepiped connecting portion 5 and scraping pieces 6a and 6b protruding forward and backward are integrated. The connecting portion 5 is formed with a resin filling hole 7 penetrating right and left. The cross-sectional ratio of the filling hole 7 to the connecting portion 5 needs to be sufficiently large so that the solidified plastic filled in this portion receives a torsional torque generated by a load applied to each segment.

Similarly, the cross-sectional shape of the resin filling hole 7 is desirably polygonal in order to receive the torque described above. In this example, the cross-sectional shape of the resin filling hole 7 is substantially a square similar to the cross-section of the connecting portion 5. . Also, a projecting portion 7 is provided at the center of the wall of the filling hole 7.
a is formed, thereby forming a narrow portion along the longitudinal direction, so that the resin does not shift in the longitudinal direction after the resin is filled. The inner surface of the resin filling hole 7 is finished so that the surface roughness has a value such that it comes into close contact with the injected resin.

In the scraping segment 4 shown in FIG. 2, a recess 8 is formed around the filling hole 7 on the side surface of the connecting portion 5, and the resin filled therein acts as a key to apply a torsional torque. In addition, the adhesion strength between the connecting portions 5 is improved. FIG. 3 shows still another embodiment of the scraping-up segment, in which a step 9 having a shape engaging with each other is formed on the side surface of the connecting portion 5, whereby a torsional torque is applied. At the same time, the arrangement between the segments and the positioning work are facilitated. The side surfaces of the connecting portion 5 are finished smoothly to ensure close contact with each other.

The end segment 3 has a filling space open inside and upward, and a recess (see FIG. 4) for positioning a mandrel 10 (see FIG. 4) serving as a reinforcing member is formed on the inner wall of the filling space. (Not shown) is formed.

Next, a process of connecting and integrating the above segments will be described. As shown in FIG.
The end segment 3 and a predetermined number of scraping segments 4 corresponding to the width of the dust removing device A are aligned and arranged with the mandrel 10 inserted through the filling hole 7. In order to adjust the pitch between the scraping segments 4, as shown in FIG.
a may be arranged. And the end segment 3 on one end side
The liquid plastic material P is injected from the upper opening of the end segment 3 and the opening of the other end segment 3 is filled as an air vent.

As the mandrel 10, an appropriate material such as a metal,
An appropriate shape such as an H-shaped cross section (see FIG. 6) can be used. In order to improve the filling property of the plastic material and the adhesion between the solidified filled plastic material and the mandrel 10, as shown in FIG. It is good to form it.

When a ring-opened polymer of a norbornene-based monomer having three or more rings modified with an elastomer is used as the filling plastic material P, for example, by mixing and filling two liquids, the mixture can be filled at room temperature and in a short time. It can be molded and is very easy to construct on site. In addition, a core material with high elasticity can be obtained by setting the elongation at break after solidification to 10 to 100%.

FIG. 7 shows another embodiment of the present invention, in which the rake 13 is provided with irregularities (projections) 13a on the scraped surface. In this embodiment, water-wet paper, cardboard boxes, plastic bags, nylon bags and the like are prevented from adhering to the rake 13. This is because if the unevenness 13a is fine to some extent, the material is unlikely to be deformed to such an extent that the material closely adheres to the unevenness, and a space remains between the unevenness 13a and the material. Then, water and air move through the space between the irregularities 13a to expand these spaces and promote separation of the two, so that the transfer of dust from the rake 13 to the transport conveyor is performed smoothly. Such surface irregularities can be easily formed by transferring the irregularities of the mold when the rake 13 is molded from a plastic material. Unevenness 1
The shape of 3a is arbitrary such as a recess, a ridge, a groove, and the like.

[0034]

As described above, according to the present invention, by using a plastic material as a raw material, the weight of the rake can be reduced, which contributes to a reduction in the size and cost of the entire dust removing apparatus. In addition, it can provide high corrosion resistance, and it is flexible and hard to deform, so there is no need for maintenance, and since the rake absorbs noise and vibration, it is a highly practical dust removal that does not adversely affect the environment An apparatus rake and a dust removing apparatus can be provided.

Further, by segmenting, the required mold is reduced, the mold cost is greatly reduced, and the stock can be reduced. Further, the size of the mold can be reduced according to the width of the water channel in which the dust removing device is to be installed. By changing the number of segments, the length of the rake can be easily adjusted and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a rake for a dust removing apparatus according to the present invention, wherein (a) is a plan view and (b) is a front view.

FIG. 2 shows a segment of a rake according to the invention.

FIG. 3 is a diagram showing another embodiment of a rake segment.

FIG. 4 is a diagram showing a process of creating a rake.

FIG. 5 is a view showing another embodiment of the configuration of the rake.

FIG. 6 is a view showing another embodiment of the components of the rake.

FIG. 7 is a view showing another embodiment of the rake.

FIG. 8 is a diagram showing a configuration of a dust removing device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 scraping portion 2 support end portion 3 end segment 4 scraping segment 5 connecting portion 6a, 6b scraping piece 7 resin filling hole 8 recess 9 step 10 mandrel 11 avant-garde screen 12 main screen 13 rake 20, 21 guide plate 24 Receiving girder 25 Side frame

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hiroki Maenozono 11-1 Haneda Asahimachi, Ota-ku, Tokyo Inside Ebara Corporation (72) Inventor Kenichi Ikeda 2470 Takaokacho, Suzuka-shi, Mie EBARA Koki Inside the company (72) Inventor Takashi Murakami 2-13-1 Miyukicho, Muroran-shi, Hokkaido Ebara-Environmental Techno Co., Ltd. in Hokkaido (56) References JP-A-60-3313 (JP, A) JP-A 63-198621 ( JP, U) JP 3-64649 (JP, B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) E02B 5/08

Claims (13)

(57) [Claims] 1. A rake for a dust remover installed so as to be able to run along a bar screen provided in a water channel by an endless chain, wherein a rake section for scraping up dust trapped on the bar screen. And a support end attached to the chain, and is made of a plastic material or a composite plastic material containing a reinforcing material such as metal, and is filled with a plurality of segments divided in the width direction of the dust removing device. A rake for a dust removing device, wherein the rake is integrally formed using a material. 2. A rupture molded plastic material obtained by molding a ring-opened polymer of a tricyclic or more norbornene-based monomer modified with an elastomer, which is a two-component mixed molding material capable of being molded at room temperature and in a short time. 2. A rake for a dust removing device according to claim 1, wherein said rake is made of a highly elastic resin material having an elongation of 10 to 100%. 3. The plastic material according to claim 1, wherein the plastic material is formed of a thermoplastic resin such as an ABS resin or a polypropylene resin, and has an elongation at break of 10 to 100% and is rich in elasticity and toughness. Item 7. A rake for a dust removing device according to item 1. 4. A rupture formed by molding the filled plastic material with a ring-opening polymer of a tricyclic or higher norbornene-based monomer modified with an elastomer, which is a two-part mixed molding material that can be molded at room temperature and in a short time. The rake for a dust removing device according to any one of claims 1 to 3, wherein the resin material is rich in elasticity and has an elongation of 10 to 100%. 5. The scraping portion is composed of a connecting portion extending in the width direction of the dust removing device and a scraping piece protruding from a beam portion, and a plurality of segments have one or more scraping pieces. The rake for a dust removal device according to any one of claims 1 to 4, wherein the rake is configured with a connecting portion as a unit. 6. The rake for a dust removing device according to claim 1, wherein a plastic filling space penetrating along the width direction of the dust removing device is formed in the segment. 7. The rake according to claim 6, wherein the plastic filling space has a polygonal cross section. 8. The rake for a dust removal apparatus according to claim 1, wherein recesses for filling plastic are formed on surfaces adjacent to each other of said segments. 9. The rake according to claim 8, wherein the recess has a polygonal cross section. 10. The rake for a dust removal apparatus according to claim 1, wherein a filler plastic material and a reinforcing metal material are used together and integrated. 11. A rake for a dust remover installed so as to be able to travel along a bar screen provided in a water channel by an endless chain, wherein a rake section for scraping up trash trapped on the bar screen. And a support end attached to the chain, comprising a plurality of segments made of a plastic material or a composite plastic material containing a reinforcing material such as a metal, and having irregularities engaged with mutually adjacent surfaces of the segments. A rake for a dust removal device, characterized in that a rake is formed. 12. A rake for a dust removing device installed so as to be able to run along a bar screen provided in a waterway by an endless chain, wherein a rake section for scraping up dust trapped on the bar screen. And a support end attached to the chain, wherein a protrusion is provided on the surface of the scraping surface. 13. A dust remover comprising the dust remover rake according to any one of claims 1 to 12.