JPH081315U - Dust remover - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a dust remover with low noise and excellent wear resistance. [Structure] The guide rail 5 includes a pair of steel guide rail frames 22 fixed to the support frame 2. An elastic member 23 such as a rubber belt is interposed on the inner surface of the guide rail frame 22. Furthermore, the guide rail main body 24 made of engineering plastic is overlaid. The elastic member 23 and the guide rail main body 24 are fixed to the guide rail frame 22 with bolts 25 and nuts 26. [Effect] Since the plastic guide rail main body 24 and the steel roller 12 come into contact with each other, no metallic noise is generated, and noise can be suppressed. Since the elastic member 23 is interposed, a sound absorbing and cushioning function can be obtained, and noise due to resonance can be prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dust remover, and in particular to a dust remover or a waterway that removes dust and coarse solids trapped by water screens or bar screens provided in waterways such as drainage channels. And a dust removal device that removes dust captured by a net screen placed in a water treatment facility by moving the net screen.

[0002]

[Prior art]

 Conventionally, in this type of dust remover, an endless chain that is elevated along a bar screen and is connected to a scraping member or a net screen, a guide rail that guides the endless chain, and the endless chain. The chain wheels that engage with are all made of steel. Further, the endless chain has a steel chain link and a steel roller, and the roller is rotatably supported by a steel roller bush.

In the above prior art, since the endless chain, the guide rail, the chain wheel, and the roller bush are made of steel, when the chain roller travels along the guide rail, metals come into contact with each other. Generated metallic noise and had the problem of noise pollution.

As a solution to such a problem, Japanese Patent Application Laid-Open No. 55-42921 discloses that at least the surface portion of the roller of the dust removing device moving chain is made of a soundproof material such as rubber or polyamide resin in order to prevent noise. A dust remover formed of a noise absorbing material is disclosed. Further, Japanese Patent Publication No. 63-40008 discloses a guide rail for a carrying chain formed by FRP. Further, Japanese Patent Application Laid-Open No. 55-42960 discloses a dust removing device in which a contact portion with a chain is formed of a noise absorbing noise absorbing material such as rubber.

[0005]

[Problems to be solved by the device]

 However, in Japanese Patent Application Laid-Open No. 55-42921, at least the surface portion of the roller is formed of a noise absorbing material. However, in such a case, the roller wears ahead of the guide rail and the roller wears early. There is a problem that occurs. Furthermore, there is also a problem that it is not possible to prevent noise due to resonance and the like due to the movement of the roller. Further, in Japanese Patent Laid-Open No. 63-40008, there is a problem in that it is impossible to completely prevent noise due to resonance or the like due to movement of the roller. Further, in JP-A-55-42960, there is a problem that the noise absorbing material is easily worn.

Therefore, an object of the present invention is to provide a dust remover which has low noise and excellent wear resistance.

[0007]

[Means for Solving the Problems]

 The present invention is directed to a dust remover in which an endless chain having rollers connected to a scraping member or a net screen is provided so as to run along a guide rail, wherein the guide rail has an elastic member interposed in a guide rail frame. This is a dust removal device in which the guide rail main body made of engineering plastic is fixed.

[0008]

[Action]

 With the above configuration, since the guide rail includes the guide rail frame and the guide rail main body made of engineering plastic, it is possible to prevent early wear of the roller. Further, an elastic member such as a rubber belt interposed between the guide rail frame and the main body of the guide rail provides a sound absorbing and cushioning function, and an excellent effect of preventing noise due to resonance can be exhibited.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 8 show a dust remover of a type that removes dust by raising a scraping member along a berth clean. In the same figure, 1 is a vertical grid bar screen, which is a supporting frame in a waterway. It is arranged in a slanted state through 2. A drive chain wheel 3 is pivotally supported at the upper end of the bar screen 1 and a driven chain wheel 4 is pivotally supported at the lower end of the support frame 2. Guide rails 5 are provided on the left and right sides of the support frame 2 along the front side of the bar screen 1, that is, on the upstream side, and a curved portion 6 is formed at the lower end of the guide rail 5 along the chain wheel 4. Has been done. Further, the support frame 2 is provided with a short guide rail 7 on the rear surface side of the bar screen 1, that is, on the downstream side position. Reference numeral 8 is an endless chain that is hung between the chain wheels 3 and 4, and is a chain link 9 that is paired with the chain wheel 9, and is rotatable at the ends of the chain link 9 through a pin 10 and a roller bush 11. A large number of rollers 12 supported by the rollers are connected to each other, and the rollers 12 circulate along the guide rails 5 and 7. Reference numeral 13 denotes a rake which is a scraping member connected and connected between the left and right endless chains 8 at an appropriate interval. The rake 13 is provided on a chain link 9 of the endless chain 8 via a support shaft 14. ing. The rake 13 has a comb-shaped scraping portion 15 to be inserted into the bar gap of the bar screen 1 by the traveling movement of the endless chain 8 and a comb-like scraping portion protruding in a direction opposite to the scraping portion 15. It has an upper claw portion 16. Reference numeral 17 is a motor connected to the chain wheel 3 by a chain 18, etc., 19 is an apron conveyor, 20 is an auxiliary screen, and 21 is a guide chain wheel. Then, the rotational force of the motor 17 is transmitted to the chain wheel 3, and the chain wheel 3 circulates the endless chain 8 along the guide rails 5 and 7, whereby the rake 13 rises along the bar screen 1. The scraps captured by the bar screen 1 are scraped up by the rake 13 and turned at the upper end position to be dropped onto the apron conveyor 19 and carried out.

In the dust removing device configured as described above, as shown in FIGS. 1 to 3, the guide rail 5 includes a pair of steel guide rail frames 22 fixed to the support frame 2. A guide rail main body 24 made of engineering plastic is superposed on an inner surface of 22 with an elastic member 23 such as a rubber belt having a sound absorbing and cushioning function interposed therebetween, and the elastic member 23 and the guide rail main body 24 are guided by bolts 25 and nuts 26. It is fixed to the rail frame 22. A guide surface 27 is formed on the inner surface of each guide rail main body 24, and a guide recess 28 is formed in one guide rail main body 24, so that the rollers 12 of the endless chain 8 form one pair of guides. The guide surface 27 of the rail main body 24 and the guide concave portion 28 forming the guide surface 27 of the other guide rail main body 24 are made to travel. The guide rail 7 is constructed by fixing an elastic member 23 and a guide rail main body 24 to each guide rail frame 22 with bolts 25 and nuts 26. In this case, in consideration of the fact that the guide rail main body 24 constituting the guide rail 5 is placed in the water of the waterway from the center downward, the water absorption treatment is performed in advance, and the extension due to water absorption is corrected in this way. I am trying to put it on. Although the engineering plastic is preferably a polyamide resin such as MC nylon, so-called nylon 6, various reinforced plastics such as ABS resin, polyacetal resin, polycarbonate resin, and cured PVC resin can be appropriately selected and used. Further, in this embodiment, since the steel roller 12 is configured to run along the guide rail main body 24 made of engineering plastic having excellent wear resistance, the metal and resin come into contact with each other. No noise is generated and noise can be suppressed. Further, since the elastic member 23 is interposed between the guide rail frame 22 and the guide rail main body 24, a sound absorbing and cushioning function of the elastic member 23 can be obtained, and noise due to resonance can be prevented.

As shown in FIG. 3, the roller 12 of the endless chain 8 has the ends of the pair of chain links 9 overlap each other, and the roller 12 is interposed between the ends of the roller 10 in the lateral direction. The roller 12 is rotatably supported via a roller bush 11 which is mounted on the pin 10. The roller 12 has a diameter larger than the width of the chain link 9, and the roller bush 11 uses an oilless roller bush. This oilless roller bush 11 preferably has a structure in which a solid lubricant is embedded by using a high-strength brass alloy as a base, but a structure in which a bronze sintered layer in which a solid lubricant is uniformly and finely dispersed is provided on a steel back metal. Alternatively, a structure in which a lubricating oil is uniformly dispersed and contained in a polyacetal resin can be appropriately selected and used. Since the roller 12 has a relatively large structure having a diameter larger than the width of the chain link 9, the roller 12 can rotate better along the guide rail main body 24 than the conventional roller having a small diameter. can get. Further, since the oilless roller bush 11 is used, refueling work can be omitted, and rattling noise excellent in wear resistance can be prevented.

The chain wheels 3 and 4 and the guide chain wheel 21 have a wheel frame 30 made of steel and a wheel main body 32 having a concave chain engaging portion 31 made of engineering plastic as shown in FIGS. 5 to 8. The wheel frame 30 is provided with a circular step portion 33 on the entire circumferential surface, and the wheel main body 32 is fitted to the step portion 33, and both can be attached and detached by a bolt 34 and a nut 35 or a bolt 34. It is connected and fixed to. In this case, the wheel main body 32 is formed of a pair of half-split main bodies 32A which are obtained by dividing the wheel main body 32 into two parts, and each half-split main body 32A can be replaced. Each of the chain wheels 3 and 4 and the guide chain wheel 21 has a steel wheel frame 30 having a plurality of V grooves 36 on the periphery as shown in FIGS. 9 and 10, and each V groove 36 of the wheel frame 30. An engagement receiving body 38 made of engineering plastic having a recessed chain engagement portion 37 may be fitted to the wheel frame 30 and detachably fixed to the wheel frame 30 by a bolt 34 and a nut 35. This allows the engagement receivers 38 to be individually replaced. The steel roller 12 of the endless chain 8 engages the engineering plastic wheel main body 32 of the chain wheels 3 and 4 and the guide chain wheel 21 or the chain engaging portions 31 and 37 of the engagement receiving body 38. Therefore, the metal and the resin come into contact with each other, so that no metallic noise is generated and the noise is suppressed.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, as shown in FIG. 11, an endless chain 8 is made up of one piece or a plurality of pieces each having a dividing frame, and a net screen 40 having a dust receiving portion 39 is connected to the endless chain 8 to form a chain wheel. It can be applied to various types of dust removing devices using a so-called net screen configured to circulate the net screen 40 by engaging with 3, 4 and traveling along the guide rails 5, 7. A driven chain wheel may be provided if necessary, and the chain may be guided only by the curved portion of the guide rail. For the bolts and nuts, appropriate detachable fasteners may be used.

[0014]

[Effect of device]

 The present invention is directed to a dust remover in which an endless chain having rollers connected to a scraping member or a net screen is provided so as to run along a guide rail, wherein the guide rail has an elastic member interposed in a guide rail frame. The guide rail main body made of engineering plastic is fixed, and the rollers of the endless chain have excellent wear resistance by running on the guide surface made of engineering plastic of the guide rail. Sound absorption and cushioning functions can be obtained, and noise can be reduced.

[Brief description of drawings]

FIG. 1 is an overall vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an enlarged cross-sectional view showing the relationship between rollers and guide rails in FIG.

FIG. 4 is an enlarged cross-sectional view of a main part showing the relationship between the driven chain wheel, the endless chain, and the guide rail in FIG.

FIG. 5 is a front view showing a chain wheel according to an embodiment of the present invention.

6 is a sectional view taken along line BB of FIG.

FIG. 7 is a front view showing a guide chain wheel according to an embodiment of the present invention.

8 is a sectional view taken along line CC of FIG.

FIG. 9 is a front view showing a chain wheel according to another embodiment of the present invention.

10 is a cross-sectional view taken along line DD of FIG.

FIG. 11 is a schematic explanatory view showing a dust removing device of a type using a net screen.

[Explanation of symbols]

 3 4 Chain wheel 5 7 Guide rail 8 Endless chain 13 Rake (raising member) 22 Guide rail frame 23 Elastic member 24 Mainly guide rail

Claims (1)

[Scope of utility model registration request] 1. A dust remover in which an endless chain connected to a scraping member or a net screen and provided with rollers is provided so as to be able to travel along a guide rail, wherein the guide rail has an elastic member interposed in a guide rail frame. A dust remover characterized by mainly fixing a guide rail made of engineering plastic.