TWI500866B - Flow controller - Google Patents

Description

Flow controller

The present invention relates to a flow controller; and more particularly to a flow controller that utilizes an elliptical valve opening and closing passage to control the flow of a gas or liquid.

Butterfly valves are widely used in business activities. Products such as butterfly valves are usually provided with a rubber or plastic gasket around the baffle, such as those disclosed in TW099060, TW142009, TW200949108, and TWI292018, etc., to achieve a leak-proof effect.

However, in many cases, the temperature and pressure of the gas or liquid are quite high. Such environmental conditions will cause severe deformation of the rubber or plastic gasket. Once the gasket is deformed, the gap between the baffle and the casing cannot be completely sealed. It even causes the gasket to fall off, causing leakage of gas or liquid.

Furthermore, rubber or plastic gaskets may also deteriorate due to high temperature and high pressure or strong acid and alkali. The material of the deteriorated gasket may be mixed with gas or liquid to cause gas or liquid contamination.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a flow controller that is well sealed and suitable for use in high temperature, high pressure or strong acid and alkali environments.

To achieve the above object, the flow controller of the present invention includes a housing, a first support member, a drive shaft and an elliptical valve.

The housing has an inner ring wall and an outer ring wall, the inner ring wall enclosing a passage; the first support member is disposed on the housing and defines a shaft hole, the shaft hole is connected to the passage; the drive shaft can be Rotatingly disposed in the shaft hole; the elliptical valve is rotatably disposed in the passage and coupled to the driving shaft, the elliptical valve includes a baffle and a sealing device, the baffle is elliptical and has an outer circumference, The sealing device comprises at least one coupling member and an elastic member, the coupling member is detachably disposed on the outer periphery of the baffle, and the elastic member is disposed on the coupling member; wherein the driving shaft drives the elliptical valve to rotate, so that the ellipse The valve opens and closes the passage. When the elliptical valve closes the passage, the elastic member elastically abuts against the inner ring wall of the casing; wherein the elastic member is made of high temperature and high pressure resistance and strong acid and alkali resistance.

Thereby, when the elliptical valve is in the closed position, the elastic deformation capability of the elastic member enables the elliptical valve to completely fit the inner ring wall of the housing to completely close the passage, providing excellent sealing and the material of the elastic member. The utility model has the characteristics of high temperature resistance and high pressure resistance and strong acid and alkali resistance, so the flow controller of the invention is suitable for high temperature and high pressure or strong acid and alkali environment.

10‧‧‧shell

511‧‧‧Second clip slot

11‧‧‧ Inner Ring Wall

111‧‧‧ channel

12‧‧‧ outer ring wall

13‧‧‧Flange

20‧‧‧First support

21‧‧‧Axis hole

30‧‧‧second support

31‧‧‧Perforation

40‧‧‧Drive shaft

41‧‧‧First clamp

411‧‧‧First slot

412‧‧‧First keyhole

42‧‧‧Driver

50‧‧‧Support shaft

51‧‧‧Second clamp

512‧‧‧second keyhole

60‧‧‧ Bushing

70‧‧‧ elliptical valve

71‧‧‧Baffle

711‧‧‧ outer periphery

72‧‧‧ Sealing device

721‧‧‧Connected parts

7211‧‧‧ tablets

722‧‧‧fasteners

723‧‧‧Flexible parts

80‧‧‧ drive

90‧‧‧First screw firmware

91‧‧‧Second screw firmware

Figure 1 is an exploded view of the present invention.

Figure 2 is a perspective view of the present invention.

Figure 3 is a schematic illustration of the closed passage of the elliptical valve of the present invention.

Fig. 3A is an enlarged view of Fig. 3.

Figure 4 is a perspective view of the open channel of the elliptical valve of the present invention.

Figure 5 is a schematic illustration of the open channel of the elliptical valve of the present invention.

The foregoing and other objects, features, and advantages of the invention are set forth in the <RTIgt;

First, referring to FIG. 1 to FIG. 3, the flow controller of the present invention comprises a housing 10, a first support member 20, a second support member 30, a drive shaft 40, a support shaft 50, and a three-axis liner 60. And an elliptical valve 70.

The housing 10 is made of a metal material. The housing 10 has an inner ring wall 11 and an outer ring wall 12. The inner ring wall 11 defines a circular cross-section passage 111. The housing 10 defines a first opening. a through hole and a second through hole respectively extending through the inner and outer ring walls 11 and 12 of the housing 10 and communicating with the channel 111, the first and second through holes being coaxial with each other . In addition, a flange 13 is disposed at each end of the axial direction of the casing 10, and the two flanges 13 are respectively connected to a pipe member, as shown in FIG. 5, of course, in other embodiments, the casing 10 It may not have the two flanges 13.

The first support member 20 is disposed on the first through hole and defines a shaft hole 21 that communicates with the passage 111.

The second support member 30 is disposed in the second through hole and defines a through hole 31 coaxial with and communicating with the shaft hole 21 of the first support member 20 .

The driving shaft 40 is rotatably disposed in the shaft hole 21, and the bottom of the driving shaft 40 extends into the passage 111. The driving shaft 40 is provided with two first clamping blocks 41 at one end and between the first clamping blocks 41. A first clamping slot 411 is defined. Each of the first clamping blocks 41 defines a first locking hole 412 communicating with the first clamping slot 411. The top side of the driving shaft 40 is provided with a square driving end 42. The end 42 is for engagement with a drive shaft of a drive unit 80. Preferably, the drive unit 80 is a pneumatic valve (see Figure 2).

The support shaft 50 is rotatably disposed on the through hole 31 of the second support member 30, that is, the support shaft 50 is located on the opposite side of the drive shaft 40. The top side of the support shaft 50 extends into the channel 111. The second clamping block 51 is disposed at one end of the supporting shaft 50, and a second clamping slot 511 is defined between the second clamping blocks 51. 51 opens a plurality of second locking holes 512 connected to the second clamping slot 511.

The two bushings 60 are disposed on the driving shaft 40 and located in the shaft hole 21 of the first supporting member 20, and the other bushing 60 is sleeved on the supporting shaft 50 and located in the through hole 31 of the second supporting member 30. .

The elliptical valve 70 is rotatably disposed in the passage 111 and coupled to the drive shaft 40 and the support shaft 50. The elliptical valve 70 includes a long shaft and a short shaft. The short axis of the elliptical valve 70 is substantially equal to the housing. The inner diameter of the annular wall 11 within 10, whereby the outer periphery of the elliptical valve in the minor axis direction abuts against the inner annular wall 11 of the housing 10. Specifically, the elliptical valve 70 includes a baffle 71 and a sealing device 72. The baffle 71 is made of metal and has an elliptical shape. The baffle 71 has an outer periphery 711, and the sealing device 72 includes two Bonding member 721, the joint members The 721 is detachably disposed on the outer periphery of the baffle 71, and the material thereof is also preferably metal. More specifically, the sealing device 72 includes a plurality of fasteners 722, and each of the coupling members 721 includes two bodies 7211, each piece The body 7211 is semi-elliptical, so that the outer part of the combined body of the two-piece body 7211 is semi-elliptical, and the four semi-elliptical pieces 7211 are detachably coupled by the fasteners 722. In the elliptical baffle 71. A first notch is defined between the two ends of the two coupling members 721, and a second notch is defined between the other ends of the two coupling members 721. The first clamping block 41 of the driving shaft 40 spans the first notch, and the plurality of first screws The first locking hole 412 and the baffle 71 are respectively inserted into the firmware 90 to connect the driving shaft 40 to the baffle 71. The two first clamping blocks 41 are tightly coupled with the two coupling members 721 to close the first notch. The second clamping block 51 of the supporting shaft 50 is disposed on the second notch. The plurality of second screws 91 respectively pass through the second locking holes 512 and the baffle 71 to connect the supporting shaft 50 to the baffle 71. The second clamping block 51 is tightly coupled to the two coupling members 721 to close the second notch. The sealing device 72 includes an elastic member 723, and the elastic member 723 is disposed on the two coupling members 721. The elastic member 723 is made of high temperature and high pressure resistant to strong acid and alkali, such as metal or polytetrafluoroethylene (commonly known as iron). In the present embodiment, the elastic member 723 is annular in the natural state and abuts against the two ends (the two ends are spaced apart), and the elastic member 723 is preferably an ellipse. The second end of the elastic member 723 is located at one of the first and second notches, that is, the two ends of the elastic member 723 are just the second clamping block of the driving shaft or the second clamping member of the supporting shaft. The block is closed. Preferably, the elastic member 723 has a first width in a first direction, and the elastic member 723 has a second width in a second direction. The first direction is parallel to the elliptical valve 70. a short axis, the second direction being parallel to the long axis of the elliptical valve 70, wherein the first width of the elastic member 723 is not greater than the short axis of the elliptical valve 70, and the second width of the elastic member 723 is in a natural state Slightly larger than the long axis of the elliptical valve 70 and the inner diameter of the inner wall surface 11 of the housing 10, It is It is said that the elastic member 723 except for the portions on both sides in the first direction (located in the first and second notches) protrudes from the joint member 721 in a natural state, and the elastic member 723 is in this case. A stretch in the natural state. In other embodiments, the two bodies 7211 of the bonding pieces 721 may also be integrally formed (not shown), and each of the coupling members 721 has an inner ring wall and an outer ring wall, and the inner ring of each of the coupling members 721 The wall is provided with an inner arc-shaped groove, and an outer arc-shaped groove is formed on the outer ring wall of each of the coupling members 721, and the arc-shaped grooves are formed to form a ring groove outside the two coupling members, and the arc-shaped grooves in the two coupling members are communicated to form a certain groove. The outer periphery 711 of the baffle 71 is embedded in the fixed slot. Preferably, the shape of the fixed slot corresponds to the outer periphery 711 of the baffle 71. The elastic member 723 is disposed in the ring groove and is accommodated. The shape of the portion of the annular groove corresponds to the shape of the annular groove. Specifically, the sealing device 72 includes a plurality of the coupling members 721. The coupling members 721 are detachably attached to the periphery of the shutter 71 on opposite sides of the shutter 71, and the coupling members 721 are protruded. The baffle 71 forms an annular groove with the baffle 71. The elastic member 723 is annularly disposed in the fixed groove and protrudes from the coupling member 721.

In use, first referring to FIG. 1 to FIG. 3A, the driving device 80 drives the driving shaft to rotate, so that the driving shaft 40 rotates the elliptical valve 70 to a closed position. At this time, the elastic member 723 will Slightly deformed and elastically abuts against the inner ring wall 11 of the housing 10, whereby the passage 111 is completely closed, and gas or liquid on the side of the passage 111 cannot flow through the elliptical valve 70 to the other side of the passage 111. Referring to FIG. 4 and FIG. 5 , the driving device 80 drives the driving shaft 40 to rotate, so that the driving shaft 40 rotates the elliptical valve 70 to an open position. At this time, the elastic member 723 is away from the housing 10 . The inner ring wall 11 no longer abuts against the inner ring wall 11 of the casing 10 and returns to a flared state in a natural state, so that the passage 111 is completely opened, and the gas or liquid on the side of the passage 111 can pass through the ellipse. The gap between the valve 70 and the inner ring wall 11 of the housing 10 flows to Channel 111 is on the other side.

The flow controller of the present invention can be used by the user to control the rotation angle of the elliptical valve 70 to be rotated by the drive shaft 40, thereby achieving the effect of accurately controlling the flow of gas or liquid.

Secondly, during the rotation of the elliptical valve 70, the elastic member has a certain elastic deformation capability, whereby the inner ring wall 11 of the casing 10 is not scratched by the elastic member 723, and when the elliptical valve 70 is in the closed position. The elastic deformation capability of the elastic member 723 will enable the elliptical valve 70 to fully engage the inner ring wall 11 of the housing 10 to completely close the passage 111, especially in the case where the first width of the elastic member 723 is not greater than a tight fit of the short axis of the elliptical valve 70, the second width of the elastic member 723 is substantially larger than the long axis of the elliptical valve 70 and the inner diameter of the inner wall surface 11 of the housing 10 in a natural state, and The sealing effect is particularly outstanding.

Furthermore, the material of the elastic member 723 used to replace the rubber or plastic gasket of the prior art does not cause severe deformation or deterioration under high temperature and high pressure or strong acid and alkali environment, so the elastic member 723 is not damaged by conventional rubber and plastic gaskets. The trouble is that the flow controller of the present invention is suitable for an environment of high temperature and high pressure or strong acid and alkali.

Moreover, the shape of the fixed groove corresponds to the shape of the outer periphery 711 of the baffle 71, whereby the inner ring wall of each of the joint members 721 is tightly coupled with the outer peripheral edge 711 of the baffle 71, especially when each of the joints When the material of the member 721 and the baffle plate are completely the same, the bonding effect of each of the bonding member 721 and the baffle 71 is consistent under any temperature and pressure conditions, so that the flow controller of the present invention is suitable for high temperature and high pressure or strong acid and alkali environment. .

In addition, the shape of the portion of the elastic member 723 that is received in the annular groove corresponds to the shape of the annular groove, whereby the outer ring wall of each of the coupling members 721 is tightly coupled with the elastic member 723, in particular When the materials of the coupling member 721 and the elastic member 723 are completely the same, the bonding effect of each of the coupling member 721 and the elastic member 723 under any temperature and pressure conditions is consistent, so that the flow controller of the present invention is suitable for use. High temperature and high pressure or strong acid and alkali environment.

It is to be noted that, because the coupling member 721 is detachably disposed on the outer periphery 711 of the baffle 71, the structure of each coupling member 721 can match the shape and position of the baffle 71, the drive shaft 40, and the support shaft 50. Variations whereby the sealing device 72 is adapted for baffles 71 of different sizes or shapes.

It should be noted that the baffle 71 is "elliptical", and the baffle 71 has a length greater than the inner diameter of the inner ring wall 11 of the casing 10, and the baffle 71 is further The rotation angle of the drive shaft 40 can be controlled, whereby the baffle 71 can be installed without the sealing device 72, regardless of the inner diameter of the inner ring wall 11 of the casing 10 due to the influence of gas or liquid at different temperatures. The baffle 71 also undergoes thermal expansion and contraction to change its width in the long axis direction, and rotates to the outer peripheral direction thereof, and the peripheral edge 711 completely abuts against the casing 10. The ring wall 11 makes the channel 111 closed by the baffle 71. Since the material of the baffle 71 is resistant to high temperature and high pressure and strong acid and alkali, it is suitable for high temperature and high pressure or strong acid and alkali environment, but in actual use, the baffle 71 and the seal are used. The combination of devices 72 makes the sealing effect of the present invention even more prominent.

However, the above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, and the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are all It is still within the scope of the invention patent.

10‧‧‧shell

11‧‧‧ Inner Ring Wall

111‧‧‧ channel

20‧‧‧First support

40‧‧‧Drive shaft

42‧‧‧Driver

50‧‧‧Support shaft

70‧‧‧ elliptical valve

71‧‧‧Baffle

721‧‧‧Connected parts

722‧‧‧fasteners

723‧‧‧Flexible parts

80‧‧‧ drive

Claims (5)

A flow controller includes: a casing having an inner ring wall and an outer ring wall, the inner ring wall enclosing a passage; a first support member disposed on the casing and defining a shaft hole, the shaft hole Connected to the channel; a drive shaft rotatably disposed in the shaft hole; an elliptical valve rotatably disposed in the passage and coupled to the drive shaft, the elliptical valve including a baffle and a sealing device, the block The plate has an elliptical shape and has an outer periphery. The sealing device comprises at least one coupling member and an elastic member. The coupling member is detachably disposed on the outer periphery of the baffle. The elastic member is disposed on the coupling member; wherein the elastic member is disposed on the coupling member; The driving shaft drives the elliptical valve to rotate, so that the elliptical valve opens and closes the passage. When the elliptical valve closes the passage, the elastic member elastically abuts against the inner ring wall of the casing; wherein the elastic member is a poly4 Fluoroethylene (Teflon), the sealing device comprises a plurality of the coupling members, and the coupling members are detachably attached to the periphery of the baffle on opposite sides of the baffle, and the coupling members protrude from the same The baffle forms an annular groove with the baffle, Of the ring member disposed in the groove and projecting to such a given binding member. The flow controller of claim 1, wherein the shape of the fixed groove corresponds to a shape of a periphery of the baffle. The flow controller of claim 1, wherein the elastic member is made of It has the characteristics of high temperature and high pressure resistance and strong acid and alkali resistance. The flow controller of claim 1, wherein the sealing device comprises a plurality of fasteners that are secured to the coupling member and the baffle. The flow controller of any one of claims 1 to 4, wherein two of the coupling members are respectively disposed on opposite sides of the baffle, and the two coupling members define a first notch therebetween, the driving shaft The first notch is connected to the first notch and is coupled to the baffle. The portion of the driving shaft that is disposed across the first notch is tightly coupled to the two coupling members to close the first notch.