TWM561158U - Ball valve switch fool-proof structure - Google Patents

Abstract

A foolproof safety structure for opening and closing a ball valve, comprising: a ball body arranged in an axial flow passage of a valve body; and a shaft rod is disposed in the radial through hole, and the buckle portion of the shaft rod is embedded on the top of the ball body a groove in the surface; a positioning member provided with a positioning groove is locked at an end of the shaft; a movable handle has a set of holes and a clamping plate at one end thereof, and the The insert hole is provided with an insert block; thereby, the operator can insert the insert block into the positioning groove, and the movable handle is rotated forward to close the axial flow path, and the card board will be stuck into the valve body. The lower end of the limit block, and the movable handle is clamped on the valve body; when the movable handle is reversely rotated to open the axial flow path, the card will retreat from the limit stop The limit of the movable handle can be released from the valve body. Since the present invention is required to turn off the axial flow path, the movable handle is placed, and in the off state, the movable handle is stuck on the valve body and cannot be taken out; therefore, the creation has a foolproof Investment returns.

Description

Ball valve opening and closing anti-dwell safety structure

The present invention relates to a ball valve, in particular to a movable handle provided with a card board, so that it cannot be separated from the valve body when the valve is closed, so as to achieve a foolproof safety structure for opening and closing the ball valve to prevent misoperation.

Press, the ball valve is evolved from the plug valve, its opening and closing member 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 for cutting, distributing and changing the flow direction of the fluid in the pipeline. The ball valve is not only simple in structure, good in sealing, but also has small driving torque, simple operation and quick opening and closing. It is the most developmental valve in recent years; In the European and American industrial countries, the use of ball valves has developed towards high temperature, high pressure, large mouth, and high sealing, and has gradually replaced the trend of gate valves, globe valves, and regulating valves.

In addition, a common ball valve, as shown in FIG. 1 , includes a valve body 10 having a first receiving space 15 and a radial through hole 12 communicating therewith, and a side of the valve body 10 is coupled. There is a second housing 20 having a second accommodating space 25 and communicating with the first accommodating space 15, a ball 70 having a through hole 71 and a concave end at the top of the ball. a groove 72, the ball 70 is received in the first accommodating space 15 and the second accommodating space 25, and a ball pad 75 is disposed at each end thereof, and a shaft 30 is pivoted in the radial direction. The through hole 12 has a latching portion 31 at the lower end thereof, and is coupled with the recess 72 of the ball 70. A fixed handle 55 is fastened to the upper end of the shaft 30 by a nut lock 56 for rotating the shaft. The rod 30 drives the rotation of the ball 70 to achieve the opening and closing of the ball valve flow path.

Press again, because the ball valve is easy to operate, the operator is easily negligent and causes the wrong opening and closing. The lighter causes financial loss, while the heavy one is a derivative accident. Some operators want to prevent the operator. Improper operation, the pipe will often hang up the tag, marking the opening and closing time of the specific ball valve, so that the operator can follow, in order to prevent the occurrence of errors; but the listing is easy to fall, or the operator is negligent, so the wrong operation will still be Occurs, so the measure of obeying the rules to avoid accidents is not ideal.

The reason is that the main purpose of this creation is to provide a foolproof safety structure that prevents human error by changing the handle structure without changing the internal components of the valve body.

A further object of the present invention is to provide a foolproof security structure that uses a movable handle to remove the handle without closing the valve.

In order to achieve the above objectives, the technical means adopted by the present invention is to install a positioning member and a movable handle at the end of the shaft outside the general ball valve body; wherein the positioning member has a set of holes at the lower end thereof, and the outer periphery The flange is provided with at least one locking hole and a positioning groove. The sleeve is sleeved on the upper end of the shaft and locked into the locking hole by a stop screw, so that the positioning member can be fixed on the shaft The movable handle has a handle at one end and a set of holes and a clamping plate at the other end, and an insertion block corresponding to the positioning groove is disposed in the sleeve hole.

Thereby, when the ball valve needs to turn off its axial flow path, the operator can insert the inserting block of the movable handle into the positioning groove, so that the sleeve hole is sleeved on the flange of the positioning member, and the hand is held. The gripper rotates the shaft forwardly to close the axial flow passage, and the clamping plate will snap into the lower edge of the limit stop, and the movable handle is clamped on the valve body; When the operator holds the grip to rotate the shaft in reverse to cause the ball to open the axial flow passage, the clamping plate will retreat from the limit of the limit stop, and the movable handle can be removed and disengaged. The valve body.

According to the foregoing feature, in the present invention, the movable handle has a protective cover on the outer edge of the sleeve hole, and a metal piece is placed on the top edge of the inner edge of the protective cover, and the top edge of the positioning member is further Further mounting a magnet piece; thereby, when the inserting block of the movable handle is inserted into the positioning slot, The magnet piece will adsorb the metal sheet, so that the protective cover can restrict the movable handle from being loosened from the flange of the positioning member.

With the help of the previous features, this paper creates a foolproof safety structure for opening and closing a ball valve, which has the following benefits:

(1) The positioning parts and movable handles provided in this creation are the components outside the valve body of the ball valve. When it is necessary to have the foolproof measures, it is not necessary to close the piping system or replace the ball valve on the pipeline, just remove the ball valve shaft. The nut and the handle at the upper end of the rod, and then the positioning member is locked on the upper end of the shaft, so that the movable handle can be placed in the required timing to perform the closing operation of the ball valve; therefore, the creation has a foolproof Investment returns.

(2) The movable handle of the present creation is provided with a card board, and when the movable handle is rotated to close the ball valve, the card board will be snapped under the limit stop of the valve body to make the movable handle Can not leave the valve body, so in the visual state, the valve system without the movable handle is open, and the movable handle with 90 degrees to the axial direction is necessarily closed, so this creation The structure has direct visual blindness benefits.

10‧‧‧ valve body

11‧‧‧Axial runner

12‧‧‧radial through hole

13‧‧‧Limit stop

20‧‧‧ second housing

21‧‧‧Axial runner

30‧‧‧ shaft

40‧‧‧ Positioning parts

41‧‧‧ Set of holes

42‧‧‧Flange

43‧‧‧Keyhole

44‧‧‧ positioning slot

45‧‧‧stop screw

46‧‧‧Magnetic piece

50‧‧‧ movable handle

51‧‧‧ grip

52‧‧‧Setting holes

53‧‧‧Card board

54‧‧‧Embedded block

60‧‧‧ protective cover

61‧‧‧metal pieces

100‧‧‧Bail valve for foolproof safety structure

Figure 1: is a cross-sectional view of a conventional ball valve.

Figure 2: A perspective view of the creative positioning member and the movable handle.

Figure 3: An exploded perspective view of the creation of a foolproof security structure.

Figure 4: Schematic diagram of the assembly of the proposed foolproof security structure.

Figure 5: A perspective view of the combination of the proposed foolproof security structure.

Figure 6: Schematic diagram of the operation of the proposed foolproof security structure.

Figure 7: An exploded perspective view of the creation of a foolproof security structure.

Figure 8 is a schematic diagram of an embodiment of the present application.

First, as shown in FIG. 2 , the structure of the positioning member and the movable handle is provided. The positioning member 40 has a hole 41 at a lower end thereof, and at least one locking hole 43 is formed on the flange 42 of the outer circumference. a positioning slot 44; the movable handle 50 has a handle 51 at one end and a set of holes 52 and a carding plate 53 below the other end, and the positioning hole 52 is provided with the positioning The slot 44 corresponds to the embedded block 54.

As shown in FIG. 3 to FIG. 5, the universal ball valve assembly and the movable handle 50 constitute a ball valve 100 having a foolproof safety structure; wherein, the general ball valve includes a valve body 10 having an axial flow passage 11 And a radial through hole 12, the outer edge of the radial through hole 12 is provided with a limit stop 13; a second housing 20 also has an axial flow path 21, the side of which is attached to the valve body The 10 phases are combined, and the axial flow passages 11/21 are connected to each other. A sphere (not shown) is provided with a ball pad (not shown) at both ends thereof, and the two components are assembled on the valve body 10 and The accommodating space (not shown) of the second casing 20 and a shaft 30 are pivotally disposed in the radial through hole 12 of the valve body 10, and have a latching portion at a lower end thereof (not shown). It is embedded in the groove (not shown) of the ball to make it combine; then the shaft 30 is rotated 90 degrees in the forward and reverse directions, which will cause the ball to close or open the axial flow path 11/21.

The general ball valve further includes a fixed handle, which is fastened to the upper end of the shaft 30 by a nut (not shown). Rotating the shaft 30 will drive the rotation of the ball; in order to assemble the positioning member 40 and the activity of the present invention The handle 50 is used to achieve the foolproof effect. The ball valve must first remove the nut and the fixed handle, and then the sleeve hole 41 of the positioning member 40 is sleeved on the upper end of the shaft 30, and locked by the stop screw 45. The locking hole 43 is inserted to fix the positioning member 40 to the end of the shaft 30, as shown in FIG.

When the ball valve needs to be closed, the inserting block 54 of the movable handle 50 can be inserted into the positioning groove 44, and the sleeve hole 52 is sleeved on the flange 42 of the positioning member 40. As shown in FIG. 5; please refer to FIG. 6 further, holding the grip 51 and rotating the movable handle in the forward direction. When the hand 50 is at 90 degrees to the axial direction of the valve body, the shaft 30 will rotate the ball to close the axial flow path 11/21, at which time the clamping plate 53 of the movable handle 50 will be engaged therein. The lower end of the limiting block 13 is engaged with the movable handle 50 on the valve body 10; when the operator holds the grip 51, the anti-sliding handle 50 is reversely rotated to be parallel with the valve body axial direction, Then, the shaft 30 will rotate the ball to open the axial flow path 11/21. At this time, the clamping plate 53 of the movable handle 50 will retreat from the limit of the limit stop 13, and the movable handle 50 can be removed and disengaged from the valve body 10.

In the present invention, the movable handle 50 has a protective cover 60 on the outer edge of the sleeve 52. A top end of the inner edge of the protective cover 60 is placed with a metal piece 61, and the top edge of the positioning member 40 is disposed. Further, a magnet piece 46 is further disposed; when the inserting block 54 of the movable handle 50 is inserted into the positioning groove 44 of the positioning member 40, the magnet piece 46 will adsorb the metal piece 61, so that the protective cover 60 can limit the The movable handle 50 is released from the flange 42 of the positioning member 40, as shown in FIG.

8 is an application embodiment of the present invention, which uses a parallel pipeline to transport different fluids to a process equipment, and a parallel ball valve is separately installed on the parallel pipeline, and the parallel pipeline is required to be closed at the same time in the process. In order to prevent the process equipment from causing damage to its high-value products due to the interruption of the supply of fluid; therefore, it is necessary to separately install a ball valve 100 having a foolproof safety structure on the parallel A and B pipelines. In this application embodiment, the two sets of ball valves installed on the original pipeline are first removed, and the nut and the fixed handle of the upper end of the shaft are removed, and the positioning member 40 is fixed on the shaft 30 in the present invention. At the end, a set of the movable handle 50 of the present invention is dispensed to the pipeline system; when the A pipeline needs to be closed, the movable handle 50 is placed on the positioning member 40, When the movable handle 50 is rotated 90 degrees, the A pipe is closed; since the movable handle 50 has only one set, and the clamping plate 53 is caught in the lower edge of the limit stop 13, it cannot be removed. Therefore, the parallel pipeline can be prevented from being closed at the same time, and the foolproof effect is achieved.

Since the positioning member 40 and the movable handle 50 of the present invention are components outside the valve body of the ball valve, when the anti-staying measures are required, it is not necessary to close the piping system or replace the ball valve on the pipeline, and only move In addition to the nut at the upper end of the ball valve shaft 30 and its fixed handle, the positioning member 40 is locked on the upper end of the shaft 30, and the movable handle 50 can be placed in the required timing to perform the closing of the ball valve. Homework, so this creation has a foolproof investment benefit. Furthermore, the movable handle 50 of the present invention is provided with a clamping plate 53. When the movable handle 50 is rotated to perform the closing operation of the ball valve, the clamping plate 53 will be caught under the limiting block 13 of the valve body. Since the movable handle 50 cannot be disengaged from the valve body, in a visual state, the valve system in which the movable handle 50 is not placed is in an open state, and the movable handle 50 which is 90 degrees from the axial direction is inevitable. It is a closed state, so the structure of this creation has direct visual blindness benefits.

In summary, the structure revealed by this creation is unprecedented, and it can achieve the improvement of efficacy, and it can be used for industrial utilization. It fully complies with the new patent requirements, and invites the bureau to grant patents to encourage innovation. There is no sense of morality.

However, the drawings and descriptions disclosed above are only preferred embodiments of the present invention, and modifications or equivalent changes made by those skilled in the art in accordance with the spirit of the present invention should still be included in the scope of the patent application.

Claims (2)

A guard valve safety structure for opening and closing a ball valve includes a valve body having an axial flow passage and a radial through hole; a spherical body is disposed in the axial flow passage, and an outer edge of the radial through hole is provided with a ball a limiting block; a shaft rod is disposed in the radial through hole, and has a latching portion at a lower end thereof, and is embedded in a groove of the top surface of the ball body, so that the shaft rod rotates forward and reverse 90 °, the ball can be closed or opened by the axial flow channel; characterized in that: a positioning member has a set of holes at a lower end thereof, and at least one locking hole and a positioning groove are provided on the outer peripheral flange, the sleeve is provided The hole sleeve is disposed at the upper end of the shaft, and is locked into the lock hole by a stop screw, so that the positioning member is fixed at the end of the shaft; a movable handle has a grip at one end and the other end at the other end a set of holes and a card board are provided, and the sleeve hole is provided with an insert block corresponding to the positioning groove; thereby, when the ball valve needs to be turned off its axial flow path, the movable type can be Inserting the inserting block of the handle into the positioning groove, so that the sleeve hole is sleeved on the flange of the positioning member, and the grip is held by the handle to rotate the shaft forward When the ball closes the axial flow passage, the clamping plate will snap into the lower edge of the limit stop, and the movable handle is clamped on the valve body; when the handle is held, the shaft is reversely rotated The rod causes the ball to open the axial flow path, and the clamping plate will retreat from the limit stop, and the movable handle can be removed to disengage from the valve body. The anti-staying safety structure for opening and closing a ball valve according to claim 1, wherein the movable handle has a protective cover at the outer edge of the sleeve hole, and the top end of the protective cover is placed at the top end. a metal piece, and a top surface of the positioning member is further provided with a magnet piece; thereby, when the inserting block of the movable handle is inserted into the positioning groove, the magnet piece will adsorb the metal piece, so that the protective cover can be The movable handle is restrained from coming loose from the flange of the positioning member.