TWM449215U - Cone-type exterior tangent line of valve and unparallel shaft three eccentric valve of valve assembly - Google Patents

Description

Three eccentric valves with the outer tangential line of the valve member and the shaft of the valve seat are not parallel

This creation is about the valve body, especially a three-eccentric valve in which the outer tangential line of the valve member is not parallel to the shaft of the valve seat.

In a conventional butterfly valve, the butterfly valve includes a shaft bore extending through a radial direction for insertion of a drive shaft and thereby driving the butterfly valve to open or close the valve as a design of the triple eccentric shaft. As shown in FIG. 7, a three-eccentric valve in the prior art is shown, wherein the valve comprises: a valve body 1' having a valve chamber 10'; a valve stem 2' through which the valve stem penetrates Body 1'. A valve seat 30' is housed in the valve chamber 10'. A snorkeling ring 32', the stagnation ring 32 is an O-ring, and the ends of the radial section of the stagnation ring 32 are symmetrical. a valve member 31' is disposed on the valve seat 30'. The valve member 31 is axially provided with a shaft hole 310 for allowing the valve stem to penetrate therethrough to control the valve The opening and closing of the piece 31.

The stop mechanism is a three-eccentric arrangement; the so-called three-eccentric shaft means that the axis of the shaft deviates from the center line formed by the lower ends of the cross section of the valve body (please refer to FIG. 4), so First eccentricity (A'). The axial center line of the valve body is offset from the center line of the pipeline, so that the second eccentricity (B') is formed. The vertebral body formed by the side edges of the two sides of the valve body is not a positive pyramid, but the tip is biased to one side. Eccentric cone. Wherein the two sides of the cone are not parallel to the axial direction of the pipe, so that a third eccentricity (C') is formed. In the prior art, one side of the cone is parallel to the axial direction of the pipeline, so the stagnation ring must be angled according to the angle thereof, and when the stagnation ring is rotated, the angle is not at the time of engagement. There will be a possibility of leakage.

In the prior art, the above valve seat cooperates with the design of the three off-axis, the valve The slope of the inner edge of the seat must conform to the slope of the eccentric cone, that is, as shown, the slope of the inner edge of the valve seat has a slope; and the inner edge of the valve seat is horizontal; and the two The slope is exactly the same as the slope of the positive pyramid. The slope of the entire inner edge changes continuously from top to bottom.

Due to the design of the above-mentioned positive-angle cone, in order to completely seal the valve body in order to achieve the stagnation ring, the annular stagnation ring must form a radial circular asymmetrical shape with respect to its axis, which has made the circular asymmetry When the stagnation ring is mounted on the outer edge of the valve to support the valve seat, the edge of the stagnation ring can be closely attached to the inner edge of the valve seat at different positions to form a completely sealed form. Since the stagnation ring is a circular circular asymmetry formed with respect to its axial center, it is quite difficult to manufacture, and there is a problem of directionality during installation, and the stagnation ring must be inserted in a set orientation. In the valve body. However, when the sluice ring slides, the water seal is destroyed.

Therefore, the purpose of the present invention is to solve the above-mentioned problems in the prior art. In the present invention, a three-eccentric valve in which the outer tangential line of the valve member and the shaft of the valve seat are not parallel is proposed, and the design of the eccentric cone makes the annular stop. The ring may be radially symmetrical with respect to its axis. That is, the circular symmetrical structure, when the stagnation ring is mounted on the outer edge of the valve to support the valve seat, the edge of the stagnation ring can be closely attached to the inner edge of the valve seat at different positions to form a complete Sealed form. Since the stagnation ring is circularly symmetrical with respect to its axial center, it is relatively simple to manufacture, and there is no directional problem during installation. The stagnation ring can be directly inserted in either direction. In the valve body. The seal can still be achieved when the sling ring slides.

In order to achieve the above object, a three-eccentric valve in which the outer tangential line of the valve member and the shaft of the valve seat are not parallel is provided, comprising: a valve body having a valve chamber; a valve seat is accommodated in the valve chamber; The valve seat is slightly annular, and the valve seat has a trapezoidal radial section; a valve member is disposed in the valve chamber, and an outer edge thereof abuts against the valve seat, and the valve member has an axial direction a shaft hole for allowing a valve stem to penetrate therethrough to control opening and closing of the valve member, the opening and closing of the valve member can regulate the flow through the fluid; the valve member forms an asymmetrical taper The two extension lines formed by the side edges of the upper and lower sides are asymmetrical, and the slope of the extension line of the upper side edge with respect to the center line of the valve member (absolute value) is greater than the center line of the lower side edge relative to the center of the valve member The slope of the line (absolute), the two inclined lines extend to the left to form an intersection point, wherein the distance between the intersection point and the center line of the valve body is not greater than the radius of the valve member; and a stop ring, the stop The ring is an O-ring that is placed on the outer side of the valve member and abuts against the valve seat. Vent rings radially symmetrical axis through the center of the ring leakproof.

The preferred design condition in the present case is that the angle between the extension line formed by the side edge of the upper side of the valve member and the center line of the valve body is between 2.5 degrees and 10 degrees, and more preferably The angle is between 4.5 and 8 degrees. Further, the angle between the line intersecting the center of the valve body and the upper side extension line is set between 10 degrees and 30 degrees, and more preferably the angle is between 14 degrees and 23 degrees. In addition, the intersection point from the intersection point to the center line of the valve body is I', then the distance from I' to the center of the valve body is between 90mm and 1500mm, and more preferably the distance is between 130mm and 1150mm. .

The features of the present invention and its advantages can be further understood from the description below, and please refer to the attached drawings when reading.

In view of the structural composition of the case, and the functions and advantages that can be produced, in conjunction with the drawings, a preferred embodiment of the present invention is described in detail below.

Referring to FIG. 1 to FIG. 4, the three eccentric valves of the present invention are shown, including the following components: a valve body 1, the inner ring wall of the valve body forms a valve chamber 10; a valve seat 30 is received in the valve chamber 10 The valve seat is slightly annular, and the valve seat has a trapezoidal radial cross section. In this case, the valve seat is a detachable structure.

a valve stem 2, the valve stem penetrates through the valve body 1, the valve stem top end can be coupled with a valve operator (not shown) for driving the valve body to rotate, so that the valve body can be selectively opened Or close the pipe diameter through hole.

A valve member 31 is disposed inside the valve seat 30. The axial direction of the valve member 31 is provided with a shaft hole 310 for allowing the valve stem 2 to penetrate therethrough to control the valve member 31. When the valve member 31 is opened and closed, the opening and closing of the valve member 31 can regulate the flow rate through the fluid; wherein the central portion of the valve member 31 protrudes from a ring, and a groove is provided near the outer edge.

a venting mechanism 3, comprising: a snoring ring 32 (please refer to FIG. 5A and FIG. 5B), the snorting ring 32 is an O-ring, and is disposed on the outer side of the valve member 31 Referring to the valve seat 30, please refer to FIG. 5. The radial direction of the stagnation ring 32 is symmetric with respect to the axis passing through the center of the stagnation ring 32, and the top of the stagnation ring 32 is slightly arcuate.

Wherein the stagnation ring is a ring composed of a silicone ring or a graphite or PTEF material, and according to the design of the present invention (to be described later), the symmetrical stop ring 32 can contact any point of the valve seat 30. And achieve the function of sealing and stopping leakage, and can be evenly distributed Force.

A water stop washer 33, the water stop washer 33 is a ring, and the water stop washer 33 is located in the concave shape of the valve member 31 and is interposed between the valve member 31 and the stagnation ring 32. The water stop washer 33 is generally made of a metal material. When the water stop washer 33 is deformed, since the stagnation ring 32 has better elasticity, the gap generated when the water stop washer 33 is deformed can be compensated for, so that a relatively good water seal can be provided.

The stop mechanism of the present case is a eccentric arrangement; the so-called triple eccentricity means that the axial center line P of the valve member 31 in the radial direction deviates from the center formed by the lower ends of the cross section of the valve body 1 Line P' (please refer to FIG. 3), such that there is a distance A between the axis P and the center line P', which is the first eccentricity.

The axial center line Q of the valve member 31 is offset from the center line Q' of the valve chamber of the valve body 1 such that there is a gap B between the axial center line Q and the center line Q' of the valve body 1, so Form a second eccentricity.

As shown in FIG. 4, the valve member 31 forms an asymmetrical taper, wherein the two extension lines R, R' formed by the side edges of the upper and lower sides are asymmetrical, but the extension line R of the upper side edge is opposite to the valve member. The slope of the center line of 31 (takes an absolute value) is greater than the slope of the lower side edge extension line R' with respect to the center line of the valve member 31 (in absolute value), as shown in FIGS. 4 and 5, the two inclined lines R R' extends to the left to form an intersection point I. The distance d between the intersection I and the center line Q' of the valve body 1 is not greater than the radius of the valve member. This constitutes a third eccentricity.

The preferred design condition in the present case is that the angle between the extension line R formed by the side edge of the upper side of the valve member 31 and the center line Q' of the valve body is C, and the angle C ranges from 2.5 degrees to Between 10 degrees. Further, the line from the intersection point I to the center of the valve body is L, and the angle between the line L and the extension line R is set to D, and the range of the angle D is between 10 degrees and 30 degrees. Further, the intersection point from the intersection point I to the center line Q' of the valve body 1 is I', and the distance from I' to the center of the valve body is between 90 mm and 1500 mm.

In the design of the present case, the vertebral body formed by the valve member which is different from the prior art is not a positive pyramid, but an eccentric cone whose tip is biased to one side. The deflection of the apex of the eccentric cone is the same as the deviation of the axial center line Q of the valve member from the center line Q' of the valve body 1. The two sides of the cone are not parallel to the axial direction of the pipeline, that is, the two inclined lines are not parallel to the center line of the valve member 31.

As shown in FIG. 5, the stagnation ring 32 can be a ring symmetrical to the axis passing through the center of the circle, so that the process is relatively simple. Referring to Figure 6, which shows the venting ring 32' of the prior art as an asymmetrical ring, this type of ring is quite difficult to manufacture because the arc of each angle must be manufactured to the specifications of the design. In addition, since the stagnation ring 32 in the present case has a symmetrical structure, when the stagnation ring 32 is sleeved to the valve member 31 and then mounted to the inside of the valve body, precise alignment is not required, so the installation is performed. The work is quite simple. Mainly because the stagnation ring 32 of the present invention can be applied to the inner edge of the valve body by applying different axial positions of its outer periphery to achieve the purpose of sealing. However, compared with the structure of the prior art of FIG. 6, because the stop ring is asymmetrical, Therefore, when installing, it must be accurately aligned, and if there is a deviation in position, there is a possibility of leakage. On the other hand, when the valve of the present invention is in use, when foreign matter is deposited between the stagnation ring 32 and the inside of the valve body, the case can be eliminated by adjusting the angle of the stagnation ring 32. , to achieve the purpose of sealing. However, the structure of the prior art is that the stagnation ring cannot be rotated because it must be accurately positioned.

The above-mentioned three eccentric shafts are designed such that the valve member 31 can be easily sleeved in the valve seat 1 to achieve a relatively high degree of sealing. In addition, the stagnation ring must be angled according to the angle of the venting ring, and when the stagnation ring is rotated, when the angle is not in agreement, there will be a possibility of leakage. The stagnation ring designed in this case has a slower curvature, so it can be easily manufactured by computer design in processing. Unlike the conventional technology, the stagnation ring cannot be applied to a computer design and must be manually manufactured, which is time consuming and costly.

The valve seat is matched with the design of the three off-axis, and the inclination of the inner edge of the valve seat must conform to the inclination of the eccentric cone, that is, as shown in the figure, the slope of the inner edge of the valve seat has a gentle slope; The underside of the valve seat has a steep slope below the inner edge; and the two slopes coincide with the slope of the eccentric cone. The slope of the entire inner edge changes continuously from top to bottom.

Due to the design of the eccentric cone described above, the annular stagnation ring can be formed in a radial symmetry with respect to its axis. That is, the circular symmetrical structure, when the stagnation ring is mounted on the outer edge of the valve to support the valve seat, the edge of the stagnation ring can be closely attached to the inner edge of the valve seat at different positions to form a complete Sealed form. Because of the stagnation ring It is symmetrical in the radial direction formed with respect to its axis, so it is quite simple in manufacturing, and there is no problem of directionality during installation. The stagnation ring can be directly inserted into the valve body in either direction. . The seal can still be achieved when the sling ring slides.

The side cover body 4 has a diameter corresponding to the diameter of the through hole of the valve body, and a plurality of screw holes are provided on one side of the side cover body 4, and the side cover body uses a plurality of screws 40 Through the screw holes, the one side of the through hole is locked.

Please refer to FIG. 3 , which is a schematic cross-sectional view of the combination of the creative components. When assembling, the valve seat is first placed on the side of the through-hole 11 and the venting ring 32 is placed in the valve body. The water stop washer 33 is inserted into the groove of the valve seat 30, and is also inserted into the pipe through hole 11 side. Finally, the side cover body 4 is placed into the pipe diameter through hole 11 and used. These screws lock the side cover 4 to the valve body. The anti-leakage mechanism is installed between the side cover body and the valve body in a tightly fitting manner, and the side cover body can be removed only by disassembling the side cover body during maintenance, which is relatively easy to repair.

In summary, the humanized design of this case is quite in line with actual needs. The specific improvement of the existing defects is obviously a breakthrough improvement advantage compared with the prior art, and it has an improvement in efficacy and is not easy to achieve. The case has not been disclosed or disclosed in domestic and foreign literature and market, and has complied with the provisions of the Patent Law.

The detailed description above is a detailed description of one of the possible embodiments of the present invention, and the embodiment is not intended to limit the scope of the patents, and the equivalent implementations or modifications that are not included in the spirit of the present invention should be included in The patent scope of this case.

1‧‧‧ valve body

2‧‧‧ valve stem

4‧‧‧ side cover

10‧‧‧Valves

30‧‧‧ valve seat

30’‧‧‧ valve seat

31‧‧‧ Valves

31'‧‧‧ Valves

32‧‧‧Stop ring

32’‧‧‧Stop ring

33‧‧‧Water stop washer

40‧‧‧ screws

310‧‧‧Axis hole

Figure 1 shows an exploded view of the valve body of the present creation.

Figure 2 shows a perspective view of the valve body of the present creation.

Figure 3 shows a cross-sectional view of the valve body of the present creation.

Figure 4 shows another cross-sectional view of the valve body of the present invention.

Figures 5A and 5B show a schematic cross-sectional view and a perspective view of the stagnation ring of the valve body of the present invention.

Figure 6 shows a schematic diagram of a stagnation ring in the prior art.

Figure 7 shows a cross-sectional view of a valve body of the prior art.

1‧‧‧ valve body

2‧‧‧ valve stem

4‧‧‧ side cover

10‧‧‧Valves

30‧‧‧ valve seat

31‧‧‧ Valves

32‧‧‧Stop ring

33‧‧‧Water stop washer

40‧‧‧ screws

310‧‧‧Axis hole

Claims (7)

A three-eccentric valve in which the outer tangential line of the valve member and the shaft of the valve seat are not parallel, comprising: a valve body having a valve chamber; a valve seat is accommodated in the valve chamber; the valve seat is slightly annular The valve seat has a trapezoidal radial section; a valve member, the valve member is disposed in the valve chamber, the outer edge of the valve seat abuts against the valve seat, and the valve member has a shaft hole in the axial direction, the shaft hole is used for Passing a valve stem through it to control the opening and closing of the valve member, the opening and closing of the valve member can regulate the flow through the fluid; the valve member (31) forms an asymmetrical taper, wherein the upper and lower sides The two extension lines (R, R') formed by the side edges are asymmetrical, and the slope of the extension line (R) of the upper side edge with respect to the center line of the valve member (31) is greater than the lower side edge extension line. (R') with respect to the slope of the center line of the valve member (31) (absolute value), extending the two extension lines (R, R') to the left to form an intersection (I), where the intersection (I) The distance from the center line (Q') of the valve body (1) is not greater than the radius of the valve member; and a stagnation ring (32) which is an O-ring and is received For the valve member (31) The outer side abuts against the valve seat (30), and the stagnation ring (32) is radially symmetric about the axis passing through the center of the stagnation ring (32). The third eccentric valve according to claim 1, wherein an angle formed between an extension line (R) formed by a side edge of the upper side of the valve member (31) and a center line (Q' of the valve body is (C), the angle (C) ranges from 2.5 degrees to 10 degrees. For example, in the third eccentric valve described in claim 1, wherein the line connecting the intersection point (I) to the center of the valve body is (L), the angle between the line (L) and the extension line (R) is set to ( D), the angle (D) ranges from 10 degrees to 30 degrees. For example, in the third eccentric valve described in claim 1, wherein the intersection point of the intersection point (I) as a vertical line to the center line (Q') of the valve body (1) is (I'), then (I' The distance from the center of the valve body is between 90mm and 1500mm. The third eccentric valve according to claim 1, wherein a central portion of the valve member protrudes from a ring, and a groove is disposed near the outer edge; a water stop washer is located in the concave portion of the valve member, and is The valve member is between the stagnation ring. 3. The eccentric valve according to claim 1, wherein the axial line (P) of the radial direction of the valve member deviates from a center line (P') formed by the lower ends of the cross section of the valve body. So that there is a distance (A) between the axis line (P) and the center line (P'), so that an eccentricity is formed; and the axial center line (Q) of the valve member is offset from the center line of the valve body (Q'), There is a gap (B) between the axial center line (Q) and the center line (Q') of the valve body, so that another eccentricity is formed. The eccentric valve according to claim 1, wherein the stagnation ring is a ring made of a rubber ring or a graphite or PTEF material, and the top of the stagnation ring abuts the valve seat, and the stagnation ring can be Any point of contact with the valve seat can evenly distribute the force.