CN205310599U - Fine pulverizer's rotor shaft core - Google Patents

Abstract

The utility model discloses a fine pulverizer's rotor shaft core, including metal base and round hole hole, recess, metal base is the cylinder shape, metal base is the through -hole to the circular port that runs the drilling tool into the well in the middle of above, with metal base's outer periphery be the concentric circles, before the round hole face of circular port face, to excavating out recess before vertical in the place ahead, after round hole face, to excavating out vertical back groove in the rear, of each other symmetrical, respectively to boring into eight round hole holes in the circular port on metal base's the outer periphery, eight round hole holes are divided upper and lowerly two -layer, every layer each four, oblique orientation setting respectively, it is above the metal base, in upper left screw hole of the corresponding brill of left and right department and upper right screw hole, symmetrical mutually, below the metal base, screw hole and right screw hole down, symmetry mutually under a left and right department corresponding brill left side, the circumferential edge of metal base the higher authority prunes the round and forms and go up the anchor ring, with the circular port be the concentric circles, circumferential edge prunes the round and forms anchor ring down below the metal base, with the circular port be the concentric circles.

Description

A kind of rotor shaft core of fine pulverizer

Technical field

This utility model belongs to the rotor shaft core of a kind of fine pulverizer, the rotor shaft core of a kind of the fine pulverizer specifically old rubbers such as waste tire of automobile, bicycle old tire are reclaimed, processed.

Background technology

Generally, the pulverizer old rubbers such as waste tire of automobile, bicycle old tire are reclaimed, process, utilized and rotor shaft core thereof, owing to designing incorrect, unreasonable structure, size is wrong, install the reasons such as not proper, the rubber fineness making pulverizing does not reach requirement, thickness is uneven, poor product quality, not improving grade, value is low, it is therefore desirable to this common pulverizer is carried out Fine design, innovation, form a kind of fine pulverizer, crudy is good, and product is superior, and utilization rate is high; And the rotor shaft core of fine pulverizer is one of them vitals, design correct, rational in infrastructure, fine pulverizer normal operation at work can be made, it is connected firmly, favorable working performance, running effect is good, so that it is guaranteed that fine pulverizer working stability, pulverizing putting in place, machining accuracy is high, recycles; Overcome common grinder and the design of rotor shaft core is wrong, unreasonable structure, cause processing not in place, poor product quality, the defects such as recovery utilization rate is low.

Summary of the invention

The purpose of this utility model is to provide the rotor shaft core of a kind of fine pulverizer, it is a vitals of fine pulverizer, design correct, rational in infrastructure, fine pulverizer normal operation at work can be made, be connected firmly, favorable working performance, running effect is good, so that it is guaranteed that fine pulverizer working stability, pulverizing puts in place, machining accuracy is high, recycles; Overcome common grinder and the design of rotor shaft core is wrong, unreasonable structure, cause processing not in place, poor product quality, the defects such as recovery utilization rate is low.

Technical scheme: the rotor shaft core of a kind of fine pulverizer, including metal pedestal and circular hole hole, groove, it is characterised in that metal pedestal is cylindrical shape, and the above of metal pedestal is rounded face, is also round shape face below metal pedestal, and metal pedestal also has outer circumference surface; The diameter of the outer circumference surface of metal pedestal is 155, and the upper and lower of metal pedestal is highly 75; Middle on metal pedestal, being drilled with a circular port downwards, circular port is a through hole, drill through below metal pedestal downwardly over from metal pedestal always, and the diameter of circular port is 92, and the outer circumference surface of circular port and metal pedestal is concentric circular; The circular hole face of circular port before, forwards excavate out the forward recess of a longitudinal direction, the upper and lower of forward recess is highly 75, the left and right length of forward recess is 24, it it is rectangular plane before forward recess, the left side of forward recess and the right side are also rectangular plane, connect with circular port after forward recess; The circular hole face of circular port after, rearward excavate out the rearward recess of a longitudinal direction, the upper and lower of rearward recess is highly 75, the left and right length of rearward recess is 24, it it is rectangular plane after rearward recess, the left side of rearward recess and the right side are also rectangular plane, connect with circular port before rearward recess, and the forward and backward degree of depth of forward recess and rearward recess is identical, forward recess is mutually symmetrical with rearward recess, and the distance before forward recess and between after rearward recess is 106.4; The intermediate line of the front and rear direction of forward recess is overlapping with the intermediate line of the front and rear direction of metal pedestal, and equally, the intermediate line of the front and rear direction of rearward recess is overlapping with the intermediate line of the front and rear direction of metal pedestal; On the outer circumference surface of metal pedestal, in circular port, it is drilled to eight circular hole holes respectively, the diameter in eight circular hole holes is all 18, the length in eight circular hole holes is all identical, respective one end, eight circular hole holes outer circle hole lays respectively on the outer circumference surface of metal pedestal, in eight respective other ends in circular hole hole, circular hole connects with circular port respectively, eight circular hole holes respectively: the first hole, the second hole, the 3rd hole, the 4th hole, the 5th hole, the 6th hole, the 7th hole, the 8th hole; Upper and lower two-layer is divided in eight circular hole holes, every layer each four, and respectively tilted direction is arranged, and wherein: the first hole, the second hole, the 3rd hole, the 4th hole are positioned at lower floor, and the 5th hole, the 6th hole, the 7th hole, the 8th hole are positioned at upper strata; First hole is positioned at the right front of the bottom of metal pedestal, is 21 below the center of circle linear distance metal pedestal in the first hole, and the angle of the center of circle line in the first hole and the horizontal intermediate line of metal pedestal is 45 °; 3rd hole is symmetrical with the first hole, and point-blank, the 3rd hole is positioned at the left back of the bottom of metal pedestal to their center of circle line, is 21 below the center of circle linear distance metal pedestal in the 3rd hole, and the angle of the center of circle line in the 3rd hole and the horizontal intermediate line of metal pedestal is 45 °; Second hole is positioned at the left front of the bottom of metal pedestal, is 21 below the center of circle linear distance metal pedestal in the second hole, and the angle of the center of circle line in the second hole and the horizontal intermediate line of metal pedestal is 45 °; 4th hole is symmetrical with the second hole, and point-blank, the 4th hole is positioned at the right back of the bottom of metal pedestal to their center of circle line, is 21 below the center of circle linear distance metal pedestal in the 4th hole, and the angle of the center of circle line in the 4th hole and the horizontal intermediate line of metal pedestal is 45 °; 5th hole is positioned at the right front on the top of metal pedestal, and the above of the center of circle linear distance metal pedestal in the 5th hole is 21, and the angle of the center of circle line in the 5th hole and the horizontal intermediate line of metal pedestal is 45 °;7th hole is symmetrical with the 5th hole, and point-blank, the 7th hole is positioned at the left back on the top of metal pedestal to their center of circle line, and the above of the center of circle linear distance metal pedestal in the 7th hole is 21, and the angle of the center of circle line in the 7th hole and the horizontal intermediate line of metal pedestal is 45 °; 6th hole is positioned at the left front on the top of metal pedestal, and the above of the center of circle linear distance metal pedestal in the 6th hole is 21, and the angle of the center of circle line in the 6th hole and the horizontal intermediate line of metal pedestal is 45 °; 8th hole is symmetrical with the 6th hole, and point-blank, the 8th hole is positioned at the right back on the top of metal pedestal to their center of circle line, and the above of the center of circle linear distance metal pedestal in the 8th hole is 21, and the angle of the center of circle line in the 8th hole and the horizontal intermediate line of metal pedestal is 45 °; Again on metal pedestal, upper left screwed hole and upper right screwed hole it is drilled with accordingly in left and right two places, the diameter of upper left screwed hole and upper right screwed hole is all 6, the degree of depth is all 10-12, the center of circle of upper left screwed hole is overlapping on one face with the horizontal intermediate line of metal pedestal with the line in the center of circle of upper right screwed hole, and, the distance in the center of circle of upper left screwed hole and the center of circle of circular port is 63, the distance in the center of circle of upper right screwed hole and the center of circle of circular port is also 63, and upper left screwed hole is mutually symmetrical with upper right screwed hole; And, below metal pedestal, lower-left screwed hole and bottom right screwed hole it is drilled with accordingly in left and right two places, the diameter of lower-left screwed hole and bottom right screwed hole is all 6, the degree of depth is all 10-12, lower-left screwed hole is overlapping on one face with the horizontal intermediate line of metal pedestal with the line in the center of circle of bottom right screwed hole, and, the distance in the center of circle of lower-left screwed hole and the center of circle of circular port is 63, the distance in the center of circle of bottom right screwed hole and the center of circle of circular port is also 63, and lower-left screwed hole is mutually symmetrical with bottom right screwed hole; After also the circumferential edge on metal pedestal is shaved a circle, form anchor ring on a circle, upper anchor ring distance the above of metal pedestal is 5, the interior circular diameter of upper anchor ring is 145, the outside diameter of upper anchor ring is exactly the diameter of the outer circumference surface of metal pedestal is 155, the inner periphery of upper anchor ring and excircle, is all concentric circular with circular port; After circumferential edge below metal pedestal is shaved a circle again, form anchor ring under a circle, it is 10 below lower anchor ring distance metal pedestal, the interior circular diameter of lower anchor ring is 145, the outside diameter of lower anchor ring is exactly the diameter of the outer circumference surface of metal pedestal is 155, the inner periphery of lower anchor ring and excircle, is all concentric circular with circular port; The rotor shaft core of this fine pulverizer, can make of rustless steel or the material such as axle-steel material or aluminium alloy.

The utility model has the advantages that: the rotor shaft core of a kind of fine pulverizer is provided, it is a vitals of fine pulverizer, design correct, rational in infrastructure, fine pulverizer normal operation at work can be made, be connected firmly, favorable working performance, running effect is good, so that it is guaranteed that fine pulverizer working stability, pulverizing puts in place, processing precision of products is high, recycles; Overcome common grinder and the design of rotor shaft core is wrong, unreasonable structure, cause processing not in place, poor product quality, the defects such as recovery utilization rate is low; The production standard of enterprise can be met, expand the social need of product.

Accompanying drawing explanation

The cross-sectional view of the vertical view of the rotor shaft core of a kind of fine pulverizer of Fig. 1

The cross-sectional view that the master of the rotor shaft core of a kind of fine pulverizer of Fig. 2 looks

Detailed description of the invention

Below in conjunction with accompanying drawing in detail this utility model is described in detail:

The rotor shaft core of a kind of fine pulverizer, including metal pedestal and circular hole hole, groove, it is characterised in that metal pedestal 9 is in cylindrical shape, and the above of metal pedestal 9 is rounded face, is also round shape face below metal pedestal 9, metal pedestal 9 also has outer circumference surface;The diameter of the outer circumference surface of metal pedestal 9 is 155, and the upper and lower of metal pedestal 9 is highly 75; Middle on metal pedestal 9, it is drilled with a circular port 10 downwards, circular port 10 is a through hole, drill through below metal pedestal 9 downwardly over from metal pedestal 9 always, the diameter of circular port 10 is 92, and the outer circumference surface of circular port 10 and metal pedestal 9 is concentric circular; The circular hole face of circular port 10 before, forwards excavate out the forward recess 11 of a longitudinal direction, the upper and lower of forward recess 11 is highly 75, the left and right length of forward recess 11 is 24, it it is rectangular plane before forward recess 11, the left side of forward recess 11 and the right side are also rectangular plane, connect with circular port 10 after forward recess 11; The circular hole face of circular port 10 after, rearward excavate out the rearward recess 12 of a longitudinal direction, the upper and lower of rearward recess 12 is highly 75, the left and right length of rearward recess 12 is 24, it it is rectangular plane after rearward recess 12, the left side of rearward recess 12 and the right side are also rectangular plane, connect with circular port 10 before rearward recess 12, the forward and backward degree of depth of forward recess 11 and rearward recess 12 is identical, forward recess 11 is mutually symmetrical with rearward recess 12, and the distance before forward recess 11 and between after rearward recess 12 is 106.4; The intermediate line of the front and rear direction of forward recess 11 is overlapping with the intermediate line of the front and rear direction of metal pedestal 9, and equally, the intermediate line of the front and rear direction of rearward recess 12 is overlapping with the intermediate line of the front and rear direction of metal pedestal 9; On the outer circumference surface of metal pedestal 9, in circular port 10, it is drilled to eight circular hole holes respectively, the diameter in eight circular hole holes is all 18, the length in eight circular hole holes is all identical, respective one end, eight circular hole holes outer circle hole lays respectively on the outer circumference surface of metal pedestal 9, in eight respective other ends in circular hole hole, circular hole connects with circular port 10 respectively, eight circular hole holes respectively: the first hole, hole the 4, the 5th, hole the 3, the 4th, the 1, second hole the 2, the 3rd, hole, the 6th hole, the 7th hole 8, hole the 7, the 8th; Upper and lower two-layer is divided in eight circular hole holes, every layer each four, and respectively tilted direction is arranged, and wherein: the first hole 4, hole the 3, the 4th, the 1, second hole the 2, the 3rd, hole is positioned at lower floor, and the 5th hole, the 6th hole, the 7th hole 8, hole the 7, the 8th are positioned at upper strata; First hole 1 is positioned at the right front of the bottom of metal pedestal 9, is 21 below the center of circle linear distance metal pedestal 9 in the first hole 1, and the angle of the center of circle line in the first hole 1 and the horizontal intermediate line of metal pedestal 9 is 45 °; 3rd hole 3 and the first hole 1 are symmetrical, their center of circle line is point-blank, 3rd hole 3 is positioned at the left back of the bottom of metal pedestal 9, is 21 below the center of circle linear distance metal pedestal 9 in the 3rd hole 3, and the angle of the center of circle line in the 3rd hole 3 and the horizontal intermediate line of metal pedestal 9 is 45 °; Second hole 2 is positioned at the left front of the bottom of metal pedestal 9, is 21 below the center of circle linear distance metal pedestal 9 in the second hole 2, and the angle of the horizontal intermediate line formation of the center of circle line in the second hole 2 and metal pedestal 9 is 45 °; 4th hole 4 and the second hole 2 are symmetrical, their center of circle line is point-blank, 4th hole 4 is positioned at the right back of the bottom of metal pedestal 9, is 21 below the center of circle linear distance metal pedestal 9 in the 4th hole 4, and the angle of the center of circle line in the 4th hole 4 and the horizontal intermediate line of metal pedestal 9 is 45 °; 5th hole is positioned at the right front on the top of metal pedestal 9, and the above of the center of circle linear distance metal pedestal 9 in the 5th hole is 21, and the angle of the center of circle line in the 5th hole and the horizontal intermediate line of metal pedestal 9 is 45 °;7th hole 7 and the 5th hole are symmetrical, their center of circle line is point-blank, 7th hole 7 is positioned at the left back on the top of metal pedestal 9, and the above of the center of circle linear distance metal pedestal 9 in the 7th hole 7 is 21, and the angle of the center of circle line in the 7th hole 7 and the horizontal intermediate line of metal pedestal 9 is 45 °; 6th hole is positioned at the left front on the top of metal pedestal 9, and the above of the center of circle linear distance metal pedestal 9 in the 6th hole is 21, and the angle of the center of circle line in the 6th hole and the horizontal intermediate line of metal pedestal 9 is 45 °; 8th hole 8 and the 6th hole are symmetrical, their center of circle line is point-blank, 8th hole 8 is positioned at the right back on the top of metal pedestal 9, and the above of the center of circle linear distance metal pedestal 9 in the 8th hole 8 is 21, and the angle of the center of circle line in the 8th hole 8 and the horizontal intermediate line of metal pedestal 9 is 45 °; Again on metal pedestal 9, upper left screwed hole 15 and upper right screwed hole 16 it is drilled with accordingly in left and right two places, the diameter of upper left screwed hole 15 and upper right screwed hole 16 is all 6, the degree of depth is all 10, the center of circle of upper left screwed hole 15 is overlapping on one face with the horizontal intermediate line of metal pedestal 9 with the line in the center of circle of upper right screwed hole 16, and, the distance in the center of circle of the center of circle of upper left screwed hole 15 and circular port 10 is 63, the distance in the center of circle of the center of circle of upper right screwed hole 16 and circular port 10 is also 63, and upper left screwed hole 15 is mutually symmetrical with upper right screwed hole 16; And, below metal pedestal 9, lower-left screwed hole 18 and bottom right screwed hole 17 it is drilled with accordingly in left and right two places, the diameter of lower-left screwed hole 18 and bottom right screwed hole 17 is all 6, the degree of depth is all 10, lower-left screwed hole 18 is overlapping on one face with the horizontal intermediate line of metal pedestal 9 with the line in the center of circle of bottom right screwed hole 17, and, the distance in the center of circle of the center of circle of lower-left screwed hole 18 and circular port 10 is 63, the distance in the center of circle of the center of circle of bottom right screwed hole 17 and circular port 10 is also 63, and lower-left screwed hole 18 is mutually symmetrical with bottom right screwed hole 17; After also the circumferential edge on metal pedestal 9 is shaved a circle, form anchor ring 14 on a circle, upper anchor ring 14 is 5 apart from the above of metal pedestal 9, the interior circular diameter of upper anchor ring 14 is 145, the outside diameter of upper anchor ring 14 is exactly the diameter of the outer circumference surface of metal pedestal 9 is 155, the inner periphery of upper anchor ring 14 and excircle, is all concentric circular with circular port 10; After circumferential edge below metal pedestal 9 is shaved a circle again, form anchor ring 13 under a circle, lower anchor ring 13 is 10 below metal pedestal 9, the interior circular diameter of lower anchor ring 13 is 145, the outside diameter of lower anchor ring 13 is exactly the diameter of the outer circumference surface of metal pedestal 9 is 155, the inner periphery of lower anchor ring 13 and excircle, is all concentric circular with circular port 10; The rotor shaft core of this fine pulverizer, takes axle-steel material to make.

Claims (1)

1. the rotor shaft core of a fine pulverizer, including metal pedestal and circular hole hole, groove, it is characterised in that metal pedestal (9) is in cylindrical shape, and the above of metal pedestal (9) is rounded face, being also round shape face below metal pedestal (9), metal pedestal (9) also has outer circumference surface; The diameter of the outer circumference surface of metal pedestal (9) is 155, and the upper and lower of metal pedestal (9) is highly 75; Middle on metal pedestal (9), it is drilled with a circular port (10) downwards, circular port (10) is a through hole, drill through below metal pedestal (9) downwardly over from metal pedestal (9) always, the diameter of circular port (10) is 92, and the outer circumference surface of circular port (10) and metal pedestal (9) is concentric circular;The circular hole face of circular port (10) before, forwards excavate out the forward recess (11) of a longitudinal direction, the upper and lower of forward recess (11) is highly 75, the left and right length of forward recess (11) is 24, it is rectangular plane before forward recess (11), the left side of forward recess (11) and the right side are also rectangular plane, connect with circular port (10) after forward recess (11), after the circular hole face of circular port (10), rearward excavate out the rearward recess (12) of a longitudinal direction, rearward recess (12) upper, purgation height is 75, a left side for rearward recess (12), the length on the right side is 24, it is rectangular plane after rearward recess (12), the left side of rearward recess (12) and the right side are also rectangular plane, connect with circular port (10) before rearward recess (12), before forward recess (11) and rearward recess (12), the rear degree of depth is identical, forward recess (11) is mutually symmetrical with rearward recess (12), distance between before forward recess (11) and after rearward recess (12) is 106.4, the intermediate line of the front and rear direction of forward recess (11) is overlapping with the intermediate line of the front and rear direction of metal pedestal (9), and the intermediate line of the front and rear direction of rearward recess (12) is overlapping with the intermediate line of the front and rear direction of metal pedestal (9), it is drilled to eight circular hole holes on the outer circumference surface of metal pedestal (9), respectively in circular port (10), the diameter in eight circular hole holes is all 18, the length in eight circular hole holes is all identical, respective one end, eight circular hole holes outer circle hole lays respectively on the outer circumference surface of metal pedestal (9), in eight respective other ends in circular hole hole, circular hole connects with circular port (10) respectively, eight circular hole holes respectively: the first hole (1), the second hole (2), the 3rd hole (3), the 4th hole (4), the 5th hole, the 6th hole, the 7th hole (7), the 8th hole (8), upper and lower two-layer is divided in eight circular hole holes, every layer each four, tilted direction is arranged respectively, wherein: the first hole (1), the second hole (2), the 3rd hole (3), the 4th hole (4) are positioned at lower floor, and the 5th hole, the 6th hole, the 7th hole (7), the 8th hole (8) are positioned at upper strata, first hole (1) is positioned at the right front of the bottom of metal pedestal (9), is 21 below center of circle linear distance metal pedestal (9) of the first hole (1), and the angle of the horizontal intermediate line of the center of circle line of the first hole (1) and metal pedestal (9) is 45 °, 3rd hole (3) is symmetrical with the first hole (1), their center of circle line is point-blank, 3rd hole (3) is positioned at the left back of the bottom of metal pedestal (9), being 21 below center of circle linear distance metal pedestal (9) in the 3rd hole (3), the angle of the center of circle line in the 3rd hole (3) and the horizontal intermediate line of metal pedestal (9) is 45 °, second hole (2) is positioned at the left front of the bottom of metal pedestal (9), is 21 below center of circle linear distance metal pedestal (9) of the second hole (2), and the angle of the horizontal intermediate line of the center of circle line of the second hole (2) and metal pedestal (9) is 45 °, 4th hole (4) is symmetrical with the second hole (2), their center of circle line is point-blank, 4th hole (4) is positioned at the right back of the bottom of metal pedestal (9), being 21 below center of circle linear distance metal pedestal (9) in the 4th hole (4), the angle of the center of circle line in the 4th hole (4) and the horizontal intermediate line of metal pedestal (9) is 45 °, 5th hole is positioned at the right front on the top of metal pedestal (9), and the above of center of circle linear distance metal pedestal (9) in the 5th hole is 21, and the angle of the horizontal intermediate line of the center of circle line in the 5th hole and metal pedestal (9) is 45 °,7th hole (7) is symmetrical with the 5th hole, their center of circle line is point-blank, 7th hole (7) is positioned at the left back on the top of metal pedestal (9), the above of center of circle linear distance metal pedestal (9) in the 7th hole (7) is 21, and the angle of the center of circle line in the 7th hole (7) and the horizontal intermediate line of metal pedestal (9) is 45 °, 6th hole is positioned at the left front on the top of metal pedestal (9), and the above of center of circle linear distance metal pedestal (9) in the 6th hole is 21, and the angle of the horizontal intermediate line of the center of circle line in the 6th hole and metal pedestal (9) is 45 °, 8th hole (8) is symmetrical with the 6th hole, their center of circle line is point-blank, 8th hole (8) is positioned at the right back on the top of metal pedestal (9), the above of center of circle linear distance metal pedestal (9) in the 8th hole (8) is 21, and the angle of the center of circle line in the 8th hole (8) and the horizontal intermediate line of metal pedestal (9) is 45 °, on metal pedestal (9), Yu Zuo, right two places are drilled with upper left screwed hole (15) and upper right screwed hole (16) accordingly, the diameter of upper left screwed hole (15) and upper right screwed hole (16) is all 6, the degree of depth is all 10-12, the line in the center of circle of the center of circle of upper left screwed hole (15) and upper right screwed hole (16), overlapping on one face with the horizontal intermediate line of metal pedestal (9), the distance in the center of circle of the center of circle of upper left screwed hole (15) and circular port (10) is 63, the distance in the center of circle of the center of circle of upper right screwed hole (16) and circular port (10) is also 63, upper left screwed hole (15) is mutually symmetrical with upper right screwed hole (16), below metal pedestal (9), Yu Zuo, right two places are drilled with lower-left screwed hole (18) and bottom right screwed hole (17) accordingly, the diameter of lower-left screwed hole (18) and bottom right screwed hole (17) is all 6, the degree of depth is all 10-12, the line in the center of circle of lower-left screwed hole (18) and bottom right screwed hole (17), overlapping on one face with the horizontal intermediate line of metal pedestal (9), the distance in the center of circle of the center of circle of lower-left screwed hole (18) and circular port (10) is 63, the distance in the center of circle of the center of circle of bottom right screwed hole (17) and circular port (10) is also 63, lower-left screwed hole (18) is mutually symmetrical with bottom right screwed hole (17), after circumferential edge on metal pedestal (9) is shaved a circle, form a upper anchor ring (14) of circle, the above of upper anchor ring (14) distance metal pedestal (9) is 5, the interior circular diameter of upper anchor ring (14) is 145, the outside diameter of upper anchor ring (14) is exactly the diameter of the outer circumference surface of metal pedestal (9) is 155, the inner periphery of upper anchor ring (14) and excircle, is all concentric circular with circular port (10), after circumferential edge below metal pedestal (9) is shaved a circle, form anchor ring (13) under a circle, it is 10 below lower anchor ring (13) distance metal pedestal (9), the interior circular diameter of lower anchor ring (13) is 145, the diameter that the outside diameter of lower anchor ring (13) is exactly the outer circumference surface of metal pedestal (9) is 155, the inner periphery of lower anchor ring (13) and excircle, is all concentric circular with circular port (10).