MXPA98000468A - Sprocket used in wastewater treatment facilities - Google Patents

Abstract

There is provided a sprocket for use in a wastewater treatment facility comprising a first portion, a second portion, and at least one fastener which snap locks the first portion to the second portion. There is also provided a sprocket for use in a wastewater treatment facility comprising at least one lightening hole, the sprocket being formed of non-metallic material.

Description

CATALINE WHEEL USED IN WASTE WATER TREATMENT FACILITIES BACKGROUND OF THE INVENTION 1. - FIELD OF THE INVENTION This invention relates to sprockets, more particularly to non-metallic sprockets used in wastewater treatment plants. 2. DESCRIPTION OF THE RELATED TECHNIQUE Suspension collectors are commonly used in wastewater treatment plants to scrape the settled sediment from the bottom of the sedimentation tank and also to float the waste cream from the surface of the wastewater. These suspension manifolds typically include a number of suspension flights of which are usually elongated members that extend the full width of the tank. The ends of the flights are connected to conveyor chains, which carry the flights in a length of circuit along the bottom of the tank and behind the surface of the water to perform the functions of scraping and extraction. The tanks are typically made of concrete and the support arrows with bearings and locking collars support the catalytic transmission wheels, which in turn activate the conveyor chain and flight systems. The sprocket wheels in a suspension manifold generally consist of three types. The first can be the activation type by keyway and screw fixer or transmission. The second can be of the loose or free wheel type. In addition, the third type can be only the type of screw fixator. Referring to Figure 1, a prior art sprocket wheel 10 having a plurality of teeth 12 used in conjunction with waste water treatment facilities is shown. The sprocket wheel 10 comprises a hole 14 having a keyway 16. The sprocket wheel 10 is formed of two sections 18 and 20. The sections 18 and 20 are joined on the line 22 through bolts 24 and notches 25. Bolts 24 can be secured in flanges 26 in each of sections 18 and 20. Bolts 24 and notches 25 typically used are made of stainless steel. Due to the fact that stainless steel is a relatively soft material, the bolts can be destroyed by the notches when disassembling the sprockets for maintenance or replacement. As a result, it is desirable to have a fastener to secure sections 18 and 20 that do not undergo the damage and costly replacement in which they are caused by being reused.

BRIEF DESCRIPTION OF THE NONDION A sprocket wheel is provided for use in a waste water treatment facility comprising a first portion, a second portion, and at least one fastener which snaps the first portion in the second portion. A sprocket wheel is also provided for use in a waste water treatment facility comprising at least one lightening hole, the sprocket wheel being formed of a non-metallic material.

BRIEF DESCRIPTION OF THE DIAMETERS Figure 1 is an end view of a prior art sprocket. Figure 2 is an end view of the sprocket wheel of the present invention.

Figure 3A is a top view of a dough portion of Figure 2. Figure 3B is a cross-sectional view of a dough portion and further shows a portion of the sprocket taken along the lines 11- Figure 2. Figure 4A is a top view of the rim clearance of Figure 2. Figure 4B is a sectional view "transverse" of the rim separation and further shows a portion of the mass of the sprocket taken along the lines I I-I of Figure 2.

DESCRI PCIÓ N OF MO DALI DAD IS PREFERI DAS Referring now to Figure 2, an end view of the sprocket 10 of the present invention is provided. Similar components have been similarly marked for clarity purposes. The sprocket 10 is formed of two sections 1 8 and 20. The sections 18 and 20 are joined on line 22 by one or more fasteners 30. The fasteners 30 may comprise a mass 32 as well as a rim clearance 34. Preferably, the separation seals 34 are towards the outside of the sprocket wheel 10 and the mass seals 32 are towards the interior of the sprocket 10. In addition, preferably the separation seals 34 and the mass seals 32 are inserted from the seals. alternating sides of the sprocket 10 as shown in Figure 2. As will be described, closures 32 and 34 are preferably single piece members, which provide a snap closure. In order to lighten the weight of the catalytic wheel 1 0 and to reduce the amount of material forming the sprocket 10, the inner portion of the sprocket wheel 1 0 may comprise one or more lightening holes 36. As a result, the sprocket wheel 10 comprises a wheel having spoke 38, 40, 42, and 44. As shown, spokes 42 and 44 are formed by joining sections 18 and 20. For example, when an arrow having a diameter of 12.24 cm (4.9375 inches) is used, a portion of central mass 50 can have a dimension 52 of 1 5.08 cm (5.9375 inches), a dimension 54 of 1.27 cm (0.5 inches), a dimension 56 of 8.25 cm (3.25 inches) and a thickness of 1 2.7 cm (5.0 inches). The thickness of the central mass portion 50 is such that it may be capable of transmitting the torque provided by an arrow to the sprocket wheel 1 0. A second mass portion 58 may surround the central mass portion 50 and may have a thickness of 7.62 cm (3.0 inches). The second dough portion 58 can have a dough closure 32 on each side of the central dough portion 50. The dimensions of the second dough portion 58 and the positioning of the dough closures 32 can be, for example, such that there is a dimension 60, 62, 64, 66 and 68 of 2.54 cm (1.0 inches), a dimension of 70 and 72 of 6.50 cm (2.5625 inches), a dimension 74 of 2.54 cm (1.0 inches), a dimension 76 of 3.01 cm (1.1875 inches), and a dimension 78 of 2.85 cm (1 .125 inches). A third portion of dough 80 may surround the second dough portion 58 and may have a thickness of 2.54 cm (1.0 inches). The third portion of dough 80 can have a dimension 82 of 12.7 cm (5.0 inches), a dimension 84 and 86 of 6.98 cm (2.75 inches), a dimension 88 of 12.06 cm (4.75 inches), a dimension 90, 92, 94 , 96, 98, 100, 102, 104, 106, and 108 of 1.90 cm (0.75 inches), one dimension 1 10 of 5.71 cm (2.25 inches), one dimension 1 12 of 14.60 cm (5.75 inches), one dimension 1 14 of 7.30 cm (2.875 inches), a dimension 1 16 of 10.16 cm (4.0 inches), and a dimension 1 18 of 5 cm (2.0 inches). An auxiliary chain tab 120 may surround the third mass portion 80 and may have a thickness of 7.62 cm (3.0 inches). The auxiliary chain tab 120 may have a ring separation closure 34 on each side of the central mass portion 50. The dimensions of the auxiliary chain flange 120 and the placement of the separation fasteners 34 may be, for example, such that there is a dimension 122 of 1 .27 cm (0.5 inches), a dimension of 1 24 of 0.635 cm (0.25 inches), a dimension of 126 and 128 of 2.54 cm (1.0 inches), and a dimension of 1 30 of 1 .27 cm (0.5 inches). The sprocket wheel 10 may also have, for example, a maximum external diameter of 59.69 cm (23.5 inches), a pitch diameter of 56.48 cm (22.24 inches), and an external flange diameter of 50.0 cm (19.6875 inches). . In addition, the teeth 12 can have a thickness of 2.54 cm (1.0 inch). Preferably, line 22 occurs on the center line of the 12-tooth cavity. Referring now to Figures 3A and 3B, the mass closure or fastener 32 of the present invention is shown. The mass closure 32 preferably comprises a main body 138 having shoulders 140 and 142 as well as limbs 144 and 146, which extend from the main body 1 38. In addition, preferably the closure 32 further comprises protrusions 148 and 150, which extend from each of the extremities 144 and 146. The core 32 may also comprise a head 1 51. The mass closure 32 as well as the hole or groove 1 53 in the second mass portion 58 for receiving the mass closure 32 resulting from the joining of the portions 18 and 20, you can have, for example, a dimension 1 52 of 9.68 cm (3.8125 inches), a dimension 154 of 9.52 cm (3.75 inches), a dimension 156 of 5.71 cm (2.25 inches), a dimension 1 57 of 1.90 cm (0.75 inches), a dimension 1 58 of 0.952 cm (0.375 inches), a dimension 1 60 of 0.476 cm (0.1 875 inches), a dimension 162 of 0.635 cm (0.25 inches), a dimension 164 of 1.90 cm (0.75 inches) ), a dimension 1 66 of 5 cm (2.0 inches), a dimension 168 of 4.76 cm (1.875 inches), a dimension 1 70 of 3.1 7 cm (1.25 inches), a dimension 1 72, 1 74 and 1 76 of 1 .90 cm (0.75 inches), a 196 dimension of 1 .27 cm (0.5 inches), 198 of 1 .42 cm (0.5625 inches), a 200 dimension of 5.39 cm (2.125 inches), and a 202 dimension of 6.25 cm (2.5 inches). In addition, the hole 204 within the main body 1 38 may have a radius of 1.27 cm (0.5 inches). The hole 153 of the second dough portion 58 is preferably sized to allow the closure 32 to be engaged by a jump in the second dough portion 58 of the sprocket 10. The projections 148 and 150 of the closure 32 can rest on the shoulders 206 and 208, respectively, of the second dough portion 58. The shoulders 206 and 208 may have a dimension 210 of 1.90 cm (0.75 inches). In addition, the distance 212 on one side of the flange 206 toward the tip of the protrusion 148 may be 1 .27 cm (0.5 in.) And the distance 214 from the tip of the protrusion 148 toward the opposite side of the flange 206 may be of 0.635 cm (0.25 inches). In addition, the distance 216 from the flange 206 to the flange 208 may be 8.89 cm (3.5 inches) and the height 190 of the flanges 206 and 208 from the edge of the second mass portion 58 may be 1.27 cm (0.5 inches). ). There may also be a distance 218 between the second portion of dough and the closure 32 of 0.079 cm (0.03125 inches). Referring to Figures 4A and 4B, the separation closure or fastener 34 of the present invention is shown. Instead it is secured to the second portion 58 as with the mass closure 32, the separation closure 34 can be secured to the auxiliary chain flange 120. The dimensions of the separation closure 34 are similar to the dimensions of the mass closure 32, except for the dimensions related to shoulders 140 and 142 that will be described. In addition, the dimensions of the flanges 206 and 208 of the auxiliary chain flange 1 20 can be similar to the flange dimensions 206 and 208 of the second mass portion 58. Specifically, the dimension 1 52 can be 7,778 cm ( 3.0625 inches), dimension 1 54 can be 7.62 cm (3.0 inches), dimension 1 56 can be 5.71 c (2.25 inches), dimension 1 57 can be 0.952 cm (0.375 inches), dimension 168 can be of 4.127 cm (1.625 inches), dimension 1 70 can be 1.90 cm (0.75 inches), dimensions 1 72 and 1 74 can be 0.952 cm (0.375 inches) and dimension 186 can be 1.77 cm (0.53125 inches). There can also be a 220 cm dimension of 2.0 cm (2.0 inches) between the edges of the head 151. As best seen in Figures 3A and 4A, the upper part of the dough closure 32 and 34 I-shaped (i.e. in the shoulders 140 and 142 allow an upper I-shaped cross section of the closures 32 and 34). The respective portion of either the second mass portion 58 or the auxiliary chain flange 120 has a cutting dimension to allow reception of the form I of the closures 32 and 34. As a result, the section of the second portion of mass 58 or the auxiliary chain tab 120 has an I-shaped groove for receiving the closures. Each of the portions 18 and 20 can be aligned on the line 22. Then, a hammer or the like can be used to force the closures 32 and 34 towards the slots or holes 153. The slots or holes 153 result from the joining of the slots 222 and 224 in sections 18 and 20 respectively, as shown in Figure 2. Because the hole 204, the extremities 144 andWHY. 146 can move slightly inwardly allowing the fasteners 32 and 34 to be inserted into the slots 153. Once the tips 148 and 150 pass the flanges 206 and 208, respectively, the fasteners 32 and 34 can then be locked by jump in its place. Further, since the upper portion of the closures 32 and 34 can have an I-shape and since the corresponding portion of the portions of the catalytic wheel 18 and 20 when joined together provide a complementary I-shaped groove, the portions 18 and 20 can be secured together. If it is desired to separate the portions 1 8 and 20 the closures 32 and 34 can be removed by applying force to move the protrusions 148 and 1 50 errtr'e yes and then push the protrusion 148 and 1 50 out and away from the flanges 206 and 208 until closures 32 and 34 are removed. In addition, closures 32 and 34 can be reused. The shoulders of the dough closure 32 are preferably thicker than the separating closing shoulders 34, since the dough closures 32 must be able to take all of the torque transmitted by the arrow to the sprocket 10. separation 34 due to its position to the sprocket 10 does not have to resist the same torque as that which the earth closures 32 resist and in this manner, the shoulders must be thinner in proportion. Rather, the separation latches 34 as well as the mass latches 32 help to ensure that the sections 18 and 20 remain held together. Preferably, the sprocket wheel 10 is molded of a non-metallic material such as polyethylene UHMW. UHMW polyethylene is preferably a certified material in accordance with ASTM specification D-4020-81, with a molecular weight of 4.0 million or greater, a relative abrasion resistance of 1 2, and an intrinsic viscosity of 24 or more. May and a water absorption of zero. In addition, the closures 32 and 34 can also be molded of the same non-metallic polyethylene material U HMW. However, the sprocket and closures 32 and 34 can be cast or made of metal. It should be recognized that, since the present invention has been described in relation to its preferred embodiments, those skilled in the art can develop a wide variety of structural details if they deviate from the principles of the invention. Therefore, the appended claims are constructed to cover all equivalents that fall within the true scope and spirit of the invention.

Claims (16)

REVIVAL NAME IS

1 . A sprocket wheel for use in a wastewater treatment facility comprising: a first portion; a second portion; and at least one fastener; wherein the fastener locks the first portion in the second portion by jump.

2. The invention according to claim 1, characterized in that the fastener is formed of a single piece of material.

3. The invention according to claim 1, characterized in that the fastener comprises a main body having 2 opposite shoulders 2 limbs extending from the main body and protrusions extending from each of the extremities.

4. The invention according to claim 3, characterized in that the fastener has an I-shaped upper cross-section and is received by a corresponding I-shaped groove, the I-shaped groove results when the first and second portions are joined together .

5. The invention according to claim 3, further characterized in that the projections are locked by a jump in the flanges in the first and second portions.

6. The invention according to claim 1, characterized in that the first portion and the second portion comprise at least one lightening hole.

7. The invention according to claim 1, characterized in that the sprocket wheel is formed of a non-metallic material.

8. The invention according to claim 7, characterized in that the fastener is formed of a non-metallic material.

9. The invention according to claim 7, characterized in that the fastener is formed of metallic material.

10. A sprocket wheel for use in a waste water treatment facility, comprising: at least one lightening hole, the sprocket wheel being formed of a non-metallic material.

11. The invention according to claim 10, characterized in that the sprocket wheel is formed of UHMW polyethylene.

12. The invention according to claim 10, characterized in that the sprocket comprises at least two spokes.

13. The invention according to claim 10, characterized in that the sprocket wheel comprises a first portion, a second portion and at least one fastener, the fastener locking the first portion in the second portion.

14. The invention according to claim 13, characterized in that the fastener is formed of a single piece of material.

15. The invention according to claim 13, characterized in that the fastener comprises a main body having two opposite shoulders, two extremities extending from the main body, and projections extending from each of the extremities.

16. The invention according to claim 13, characterized in that the fastener has an I-shaped upper section and is received by a corresponding I-shaped groove, the I-shaped groove that results when the first and the second portions are joined jointly .