TWI838195B - Improved structure of ball valve pipeline hand valve to prevent fooling - Google Patents

Abstract

An improved structure for hand valve foolproofing of ball valve pipelines is that each valve body in the ball valve pipeline is equipped with a hand valve foolproofing mechanism, including a foolproofing key inserted into a lock core to drive the lock core to synchronously drive a baffle to rotate, and the foolproofing key is set to be pulled out only when the baffle is located on the axial side of the valve body; thereby, the foolproofing key is turned to rotate the baffle to the axial side of the valve body. , to limit the rotation of the hand valve, and at this time the foolproof key can be pulled out from the lock core, so that the hand valve cannot rotate to prevent the ball valve from being closed; at this time, the foolproof key can drive the baffle to rotate to the radial side of the valve body on the hand valve foolproof mechanism of the ball valve of another pipeline, and is set to a state where it cannot be pulled out; therefore, the present invention can avoid the risk of the ball valve being completely closed due to improper operation.

Description

Improved structure of ball valve pipeline hand valve to prevent fooling

The present invention relates to a ball valve, and in particular to a hand valve anti-foolproof structure that uses a foolproof key to achieve a situation in which the ball valve will not be completely closed in the pipeline.

According to the data, the ball valve evolved from the plug valve. Its opening and closing part is a ball, and the ball valve uses the ball to follow the 90-degree rotation of the shaft to achieve the opening and closing of the valve. The ball valve is mainly used to cut off, distribute and change the flow direction of the fluid in the pipeline. The ball valve not only has a simple structure and good sealing, but also has a small driving torque, easy operation, and can be opened and closed quickly. It is the most developed valve in recent years; especially in European and American industrial countries, the use of ball valves has been developing towards high temperature, high pressure, large diameter, and high sealing, and there is a trend of gradually replacing gate valves, stop valves, and regulating valves.

The commonly used ball valve 900, as shown in Fig. 1-2, comprises: a first valve body 910, which has a first accommodation space 911 and a radial through hole 912 connected thereto; a second housing 920 is combined with one side of the first housing 910, which has a second accommodation space 921 and is connected to the first accommodation space 911; a ball 930, which has a through hole 931 and a groove 932 at its top, and the ball 930 is used to accommodate the first accommodation space 921; In the first accommodation space 911 and the second accommodation space 921, a ball pad 940 and a shaft 950 are respectively provided at both ends, which are pivotally arranged in the radial through hole 912, and have a latch portion 951 at the lower end, which is combined with the groove 932 of the ball 930, and a hand valve 960 is locked to the upper end of the shaft 950 with a nut 961, which is used to rotate the shaft 950 to drive the rotation of the ball 930, so as to achieve the opening and closing of the flow channel of the ball valve 900.

Furthermore, many high-tech industries rely on fluids for their processes. The pipelines for fluid transportation are shown in FIG3 . The pipeline structure includes at least pipeline A and pipeline B, whose source ends may be different fluid sources, while the flow ends are transported to the same process. Each pipeline in the structure is equipped with a ball valve 900 to open and close the flow channel of its respective pipeline. Since the process end of the pipeline cannot be completely without fluid supply, the ball valve pipeline is not allowed to have the result of the ball valve 900 being completely closed due to improper operation. As shown in Figure 3, the hand valve 960 is in the same axial direction as the pipeline, which means that it can be visually determined that both A/B pipelines are open. However, the ball valve 900 is very easy to operate. Once a person causes an error in closing it, the pipeline will immediately suffer an unexpected disaster. Some operators will hang warning signs on the pipeline to mark the opening and closing time periods of specific ball valves for personnel to follow. However, the effect of hanging signs is limited, and the probability of incorrect operation is higher. Therefore, how to apply a fool-proof mechanism is the fundamental countermeasure to avoid human errors.

Therefore, the main purpose of the present invention is to provide an improved structure for ball valve pipeline hand valve foolproofing, which has a foolproof safety structure to prevent human error operation.

Another purpose of this invention is to provide an improved structure for ball valve pipeline hand valve to prevent mistakes, using a movable lock key to avoid the risk of the ball valve being completely closed due to improper operation.

To achieve the above-mentioned purpose, the individual ball valve of the present invention comprises: a valve body, having an axial flow channel outer shell and a radial shaft outer shell, the inner edge of the flow channel outer shell is provided with an axial flow channel for assembling a ball, the inner edge of the shaft outer shell is provided with a radial through hole for passing a shaft, and the lower end of the shaft has a latching portion, which is embedded in the ball A hand valve is fixed to the upper end of the shaft with a nut, and the shaft is rotated to drive the ball to rotate; two stop blocks are respectively fixed on the outer shell of the shaft to limit the nose of the hand valve to rotate within a fixed angle; and the rotation of the hand valve will drive the shaft to rotate 90° in the forward and reverse directions, thereby driving the ball to open and close the axial flow channel.

Its features are: a hand valve anti-fouling mechanism is sleeved on the periphery of the shaft housing and above the shaft rod, and includes: a coupling seat, which has an upper housing and a lower coupling plate, and is connected by a vertical plate; the front side plate of the upper housing is provided with a coupling hole, and the top side plate and the end side plate are provided with a connected groove; the lower coupling plate has a U-shaped sleeve hole formed on its plate surface facing forward, and the front end of the U-shaped sleeve hole is provided with a The invention relates to a shaft housing having an upright coupling surface; a fixing plate which is locked on the coupling surface of the lower coupling plate so as to allow the U-shaped sleeve hole to be sleeved and stably coupled to the periphery of the shaft housing; a locking structure which has a lock head which is locked on the coupling hole of the upper housing body by a nut, the lock head comprising a screw body and a lock core, the bottom of the lock core extending through the bottom surface of the screw body is provided with a non-circular body The flange block; a brake member is a vertical U-shaped body, having a rotating piece and a baffle connected to the opposite side thereof, the rotating piece passes through the groove of the upper shell body, and a non-circular hole that can fit with the flange block is provided on the inner end surface thereof, and is locked on the flange block by a screw, so that the rotating piece can be linked with the lock core; the surface of the baffle is provided with a predetermined identification color, which can be changed with the rotating piece on the The outer edge of the upper shell body generates a 90° linkage rotation, and the baffle is respectively located on the axial side and radial side of the valve body before and after the rotation action; an anti-fool key can be inserted into the lock core and drive the lock core to rotate in the solenoid body, thereby synchronously driving the rotating plate and the baffle thereon to rotate, and the anti-fool key is set to be pulled out only when the baffle is located on the axial side of the valve body.

Thus, by turning the foolproof key, the baffle is rotated to the axial side of the valve body to limit the rotation of the hand valve, and at this time the foolproof key can be pulled out from the lock core, so that the hand valve cannot rotate the ball valve; at this time, the foolproof key can be on the hand valve foolproof mechanism of the ball valve of another pipeline, driving the baffle to rotate to the radial side of the valve body, and is set to a state where it cannot be pulled out, so as to avoid the risk of the ball valve being completely closed due to improper operation.

According to the above-mentioned features, the outer diameter of the screw body of the lock and the inner diameter of the coupling hole in the present invention are both set to be non-circular holes so that the lock will not rotate.

According to the aforementioned features, the coupling surface of the present invention is provided with a screw hole, and the fixing plate is provided with a lock hole opposite to the screw hole of the coupling surface, which is locked by a screw.

According to the aforementioned features, the fixing plate in the present invention matches the shape of the stop block on the outer shell of the shaft and is provided with a pair of protruding locking blocks.

With the aforementioned features, the hand valve anti-fool mechanism provided in the present invention is a component outside the ball valve body. When anti-fool measures are required, there is no need to replace the ball valve on the pipeline. The hand valve anti-fool mechanism only needs to be assembled around the outer shell of the shaft. The baffle can stop the rotation of the hand valve, thereby preventing human error operation.

10: Valve body

11: Runner housing

12: Shaft housing

13: Axial flow channel

14: Radial through hole

15: Stop block

16: Sphere

161: Groove

20: Shaft

201: latch part

30:Hand valve

31: Nut

32: Tip of nose

40: Hand valve anti-fouling mechanism

50: Combination seat

51: Upper shell

511: Binding hole

512: Groove

52: Lower binding plate

521: U-shaped hole

522: Bonding surface

523: screw hole

53: Vertical board

54:Fixed plate

541: Keyhole

542: Screw

543: Card block

60: Locking structure

61: Lock

611: Cap

612:Spiral tube body

613: Lock core

614: flange block

615: Internal screw hole

62: Gasket

63: Brake parts

64: Rotating piece

641: Non-circular hole

65: Screws

66: Baffle

67: Foolproof key

68: Nut

100:Ball valve

200: Ball valve pipeline

Figure 1 is a three-dimensional diagram of the structure of a commonly used ball valve.

Figure 2 is a cross-sectional view of a commonly used ball valve.

Figure 3 is a schematic diagram of a commonly used pipeline structure.

Figure 4 is a disassembled three-dimensional diagram of the hand valve anti-fouling structure of the present invention.

Figure 5 is a disassembled three-dimensional diagram of a preferred embodiment of the present invention.

Figure 6 is a combined three-dimensional diagram of a preferred embodiment of the present invention, which shows the manual valve LOCK status.

Figure 7 is a combined three-dimensional diagram of a preferred embodiment of the present invention, which shows the hand valve UNLOCK state.

Figure 8 is a cross-sectional view of a preferred embodiment of the present invention.

Figure 9 is a reference diagram of the present invention in a usage state.

Figures 10A to 10D are schematic diagrams showing different colors of the rotating baffle of the present invention.

The following description will be used as an embodiment with accompanying drawings, but it is not limited thereto. The present invention can also be implemented in other embodiments, and the known steps or components are not described in the details to avoid unnecessary limitations on the present invention. It should be noted that the drawings are for illustration only and do not represent the actual size or quantity of the components. Some details may not be fully drawn to keep the drawings simple.

First, please refer to FIG. 4 to FIG. 10 , the hand valve foolproof structure of the ball valve pipeline opening and closing of the present invention, the structure of the ball valve 100 in a preferred embodiment, includes: a valve body 10, which has an axial flow channel shell 11 and a radial shaft shell 12, the inner edge of the flow channel shell 11 is provided with an axial flow channel 13 for assembling a ball 16 (as shown in FIG. 8 ), the inner edge of the shaft shell 12 is provided with a radial through hole 14 for penetrating a shaft 20, and the lower end of the shaft 20 has A latch portion 201 is embedded in the groove 161 on the top surface of the ball 16; a hand valve 30 is locked on the upper end of the shaft 20 with a nut 31 to rotate the shaft 20 and drive the ball 16 to rotate; two stop blocks 15 are respectively fixed on the shaft housing 12 to limit the nose 32 of the hand valve 30 to rotate within a fixed angle; and the rotation of the hand valve 30 will drive the shaft 20 to rotate 90° in the forward and reverse directions, thereby driving the ball 16 to open and close the axial flow channel 13. However, it is found that the above-mentioned structure belongs to the prior art (Prior Art) and is not the patent subject of the present invention, so it is not necessary to elaborate.

The present invention is characterized in that: a hand valve foolproof mechanism 40 is sleeved on the periphery of the shaft housing 12 and above the shaft 20, and includes: a coupling seat 50, which has an upper housing 51 and a lower coupling plate 52, and the two are connected by a vertical plate 53; the front side plate of the upper housing 51 is provided with a coupling hole 511, and the top side plate and the end side plate are provided with a connected groove 512; the lower coupling plate 52 has a U-shaped sleeve hole 521 formed on its plate surface facing forward, and the front end of the U-shaped sleeve hole 521 is provided with a vertical coupling surface 522; in this embodiment, the coupling surface 522 is provided with a screw hole 523.

A fixing plate 54 is locked on the joint surface 522 of the lower joint plate 52, so that the U-shaped sleeve hole 521 can be sleeved and firmly joined to the periphery of the shaft housing 12; in this embodiment, the fixing plate 54 is provided with a locking hole 541 on the screw hole 523 opposite to the joint surface 522, and is locked by a screw 542. The fixing plate 54 is matched with the shape of the stop block 15 on the shaft housing 12, and is provided with a pair of protruding clamping blocks 543.

A locking structure 60, which has a lock head 61, is locked on the coupling hole 511 of the upper shell 51 by a nut 68. The lock head 61 includes a cap 611, a screw body 612 and a lock core 613. After the bottom of the lock core 613 extends out of the bottom surface of the screw body 612, a non-circular flange block 614 is provided, and an inner screw hole 615 is provided at the bottom of the flange block 614; in this embodiment, a gasket 62 can be added to the nut 68, but it is not limited to this. In this embodiment, the outer diameter of the screw body 612 of the lock head 61 and the inner diameter of the coupling hole 511 are both set as non-circular holes, so that the lock head 61 will not rotate.

A brake member 63 has a rotating plate 64 and a baffle plate 66 connected to the opposite side thereof. The rotating plate 64 passes through the groove 512 of the upper shell 51, and is provided with a non-circular hole 641 on its inner end surface that can be fitted with the flange block 614. The rotating plate 64 is locked in the inner screw hole 615 at the bottom of the flange block 614 by a screw 65, so that the rotating plate 64 can be linked with the lock core 613; the surface of the baffle plate 66 is provided with a predetermined identification color, and can be linked with the rotating plate 64 to generate 90° rotation at the outer edge of the upper shell 51, and the baffle plate 66 is respectively located on the axial side and the radial side of the valve body 10 before and after the rotation action. In this embodiment, the brake member 63 is in a U-shape and is vertical, and the baffle 66 can be formed by bending the outer end surface of the rotating plate 64 in one piece.

A foolproof key 67 can be inserted into the lock core 613 and drive the lock core 613 to rotate in the screw body 612, thereby synchronously driving the rotating plate 64 and the baffle 66 thereon to rotate, and the foolproof key 67 is set to be able to be pulled out only when the baffle 66 is located on the axial side of the valve body 10.

Thus, the anti-foolproof key 67 is rotated to rotate the baffle 66 to the axial side of the valve body 10 to limit the rotation of the hand valve 30, and the anti-foolproof key 67 can be pulled out from the lock core 613, so that the hand valve 30 cannot rotate the ball valve 100; at this time, the anti-foolproof key 67 can drive the baffle 66 to rotate to the radial side of the valve body 10 on the hand valve anti-foolproof mechanism 40 of the other pipeline ball valve, and is set to a state where it cannot be pulled out, so as to avoid the risk of the ball valve 100 being completely closed due to improper operation.

FIG9 shows a reference diagram of the structure of the present invention applied to a ball valve pipeline 200 in one of its open and closed states; the ball valve pipeline 200 includes at least pipeline A and pipeline B, whose source ends should belong to different fluid sources and whose flow ends belong to the same process, and each pipeline is equipped with a ball valve 100 to open and close the axial flow channel 13 of each pipeline. Since the process end cannot be completely without fluid supply, the ball valve pipeline 200 is not allowed to cause the ball valve 100 to be completely closed due to improper operation.

Figures 10A to 10D are schematic diagrams showing different colors of the baffle 66 of the present invention, which are used to distinguish the relative foolproof properties of opening and closing several groups of different color hand valves 30 at the same time; for example, four groups of different pipes, each group has a hand valve foolproof mechanism 40 on the left and right, respectively sprayed with red (A), and the other three groups are yellow (B), white (C), and green (D). If red (A) is turned on, yellow (B), white (C), and green (D) will not be turned off. Therefore, the different color design of the baffle 66 has an auxiliary function of enhancing easy identification.

The ball valve 100 of the present invention is provided with a hand valve foolproof mechanism 40, and the ball 16 of the ball valve 100 of the A pipeline and the B pipeline is in the open mode relative to the axial flow channel 13, and the hand valve 30 is stopped by the baffle 66. Since the hand valve 30 is in the "LOCK" locked state and cannot rotate, it can prevent the ball valve 100 of the A pipeline and the B pipeline from being closed by improper operation; Next, when the ball valve 100 of the B pipeline needs to be closed, the foolproof key 67 needs to be inserted into the lock core 613, and the lock core 613 is driven to rotate in the screw body 612, thereby synchronously driving the baffle 66 to rotate. Since the hand valve 30 of the B pipeline is in the "UNLOCK" unlocked state, the user can rotate the hand valve 30 to drive the ball 16 to close the axial flow channel 13. At this time, the B pipeline is in the shut-off mode, and the foolproof key 67 cannot be removed from the lock core 613. Even if the user accidentally wants to operate the ball valve 100 of the A pipeline, there is no foolproof key 67 available, and the hand valve 30 of the A pipeline is blocked by the baffle 66, so the hand valve 30 cannot rotate. Therefore, if the ball valve 100 of one pipeline in the present invention is shut off, the ball valve 100 of the other pipeline will not be operated. In other words, the ball valve pipeline 200 of the present invention will not have the risk of all ball valves 100 being shut off.

The hand valve foolproof mechanism 40 provided in the present invention is an external component of the ball valve 100. When foolproof measures are required, there is no need to replace the ball valve 100 on the pipeline. As long as the hand valve foolproof mechanism 40 is assembled around the shaft housing 12, the baffle 66 can stop the rotation of the hand valve 30, thereby preventing human error in operation. Since the present invention does not require huge investment in equipment, it has excellent industrial benefits.

In summary, the technical means disclosed in this invention do meet the patent requirements of invention such as "novelty", "progressiveness" and "availability for industrial use". We pray that the Bureau of Industry will grant patents to encourage inventions without any sense of gratitude.

However, the above disclosed diagrams and descriptions are only the preferred embodiments of the present invention. Any modifications or equivalent changes made by those familiar with this technology in accordance with the spirit and scope of this case should still be included in the scope of the patent application of this case.

10: Valve body

11: Runner housing

12: Shaft housing

13: Axial flow channel

15: Stop block

20: Shaft

30:Hand valve

31: Nut

32: Tip of nose

40: Hand valve anti-fouling mechanism

50: Combination seat

51: Upper shell

512: Groove

52: Lower binding plate

521: U-shaped hole

522: Bonding surface

523: screw hole

53: Vertical board

54:Fixed plate

541: Keyhole

542: Screw

543: Card block

60: Locking structure

61: Lock

66: Baffle

67: Foolproof key

100:Ball valve

Claims (4)

An improved structure for preventing a ball valve pipeline hand valve from being fooled, wherein each ball valve comprises: A valve body having an axial flow channel outer shell and a radial shaft outer shell, the inner edge of the flow channel outer shell is provided with an axial flow channel for assembling a ball, the inner edge of the shaft outer shell is provided with a radial through hole for passing a shaft, and the lower end of the shaft has a latching portion which is embedded in a groove on the top surface of the ball; A hand valve, which is locked to the upper end of the shaft with a nut, and the shaft is rotated to drive the ball to rotate; Two stoppers are fixed on the shaft housing to limit the nose of the hand valve from rotating within a fixed angle; and the rotation of the hand valve will drive the shaft to rotate 90° in both directions, thereby driving the ball to open and close the axial flow channel; Its features are: a hand valve anti-fouling mechanism is sleeved on the periphery of the shaft housing and above the shaft, which includes: A coupling seat, which has an upper shell and a lower coupling plate, and is connected by a vertical plate; the front side plate of the upper shell is provided with a coupling hole, and the top side plate and the end side plate are provided with a connected groove; the plate surface of the lower coupling plate is forwardly formed into a U-shaped sleeve hole, and the front end of the U-shaped sleeve hole is provided with a vertical coupling surface; a fixing plate is locked on the coupling surface of the lower coupling plate, so that the U-shaped sleeve hole can be sleeved and stably coupled to the periphery of the shaft outer shell; A locking structure, which has a lock head, which is locked on the coupling hole of the upper shell by a nut, and the lock head includes a screw body and a lock core, and the bottom of the lock core is provided with a non-circular flange block after it extends out of the bottom surface of the screw body; A brake piece is a vertical U-shaped body, having a rotating plate and a baffle connected to the opposite side thereof. The rotating plate passes through the groove of the upper shell body, and a non-circular hole that can fit with the flange block is provided on its inner end surface, and is locked on the flange block by a screw, so that the rotating plate can be linked with the lock core; the surface of the baffle is provided with a predetermined identification color, and can be linked with the rotating plate to produce a 90° rotation on the outer edge of the upper shell body, and the baffle is respectively located on the axial side and radial side of the valve body before and after the rotation action; A foolproof key can be inserted into the lock core and drive the lock core to rotate in the screw body, thereby synchronously driving the rotating plate and the baffle thereon to rotate, and the foolproof key is configured to be pulled out only when the baffle is located on the axial side of the valve body; Thus, by turning the foolproof key, the baffle is rotated to the axial side of the valve body to limit the rotation of the hand valve, and at this time the foolproof key can be pulled out from the lock core, so that the hand valve cannot rotate the ball valve; at this time, the foolproof key can be on the hand valve foolproof mechanism of the ball valve of another pipeline, driving the baffle to rotate to the radial side of the valve body, and is set to a state where it cannot be pulled out, so as to avoid the risk of the ball valve being completely closed due to improper operation. As described in Item 1 of the patent application, in the improved structure of the ball valve pipeline hand valve foolproofing, the outer diameter of the screw body of the lock and the inner diameter of the coupling hole are both set as non-circular holes so that the lock will not rotate. As described in Item 1 of the patent application scope, the improved structure of the ball valve pipeline hand valve for preventing fooling is provided, wherein the coupling surface is provided with a screw hole, and the fixing plate is provided with a lock hole opposite to the screw hole of the coupling surface, which is locked by a screw. As described in Item 3 of the patent application, the improved structure of the ball valve pipeline hand valve anti-fouling, wherein the fixing plate is matched with the shape of the stop block on the outer shell of the shaft, and is provided with a pair of protruding locking blocks.

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