CN216768424U

CN216768424U - Ball valve with limiting function

Info

Publication number: CN216768424U
Application number: CN202123135585.2U
Authority: CN
Inventors: 蔡加潮; 蒋唐锦
Original assignee: Hangzhou Liangsheng Electric Co ltd
Current assignee: Hangzhou Liangsheng Electric Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-06-17
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a ball valve with a limiting function, which comprises a valve body with a circulation hole, a valve cover fixedly connected with the valve body, a valve seat, a valve core and a valve rod, wherein a limiting plate is arranged above the valve cover, one end of the limiting plate is fixedly connected with the valve rod, and the other end of the limiting plate is provided with a limiting device. The limiting device arranged in the utility model can limit the fully-opened or fully-closed state of the ball valve, and avoids the influence on the use of the ball valve caused by the accidental closing or opening of the ball valve.

Description

Ball valve with limiting function

Technical Field

The utility model relates to the technical field of ball valves, in particular to a ball valve with a limiting function.

Background

The ball valve, the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The ball valve is widely applied to various pipelines in the industries of water supply, gas supply, pipeline transportation and the like. However, in many occasions, the ball valve lacks a limiting device, so that an operator or others can easily touch the switch carelessly in the using process, the valve is opened or closed, and the use of the ball valve is influenced. For example, a "ball valve" disclosed in chinese patent web, with publication number CN105156712B, the composite ball valve includes an outer ball disposed at an outer layer, an inner ball disposed inside the outer ball, and the inner ball and the outer ball are connected in a rotation manner along an axis of a valve stem; the ball valve comprises a ball valve body, a composite valve ball and an operating mechanism, wherein the composite valve ball is arranged inside the ball valve body, an outer valve ball in the composite valve ball is connected with the operating mechanism through an outer ball connecting piece, and an inner valve ball is connected with the operating mechanism through an inner ball connecting piece. Although the service life of the ball valve is effectively prolonged, the opening or closing position of the ball valve cannot be fixed, and the situation that the ball valve is opened or closed by mistake still exists.

SUMMERY OF THE UTILITY MODEL

The utility model provides a ball valve with a limiting function, which aims to solve the problem that the use of the valve is affected because the valve is mistakenly opened or closed due to the fact that the existing ball valve is easily touched by field operators or others in the use process, and the problem that the valve is mistakenly opened or closed is solved, and the problem that the valve is mistakenly opened or closed in the use process is avoided.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a take limit function's ball valve, including the valve body that has the opening, with valve body fixed connection's valve gap, disk seat, case and valve rod, the valve gap top is equipped with the limiting plate, the one end and the valve rod fixed connection of limiting plate, the other end of limiting plate is equipped with stop device. When the ball valve is used, the ball valve is required to be in a fully-opened or fully-closed state according to the requirement, once a field operator accidentally touches a switch of the ball valve, the opening state of the ball valve can be changed, and media flowing through the ball valve are easily affected.

Preferably, a sealing ring is arranged at the joint of the valve rod and the valve cover. The connection sealing performance between the valve rod and the valve cover is enhanced, and the leakage of media flowing through the ball valve is avoided.

Preferably, the valve cover is provided with a limiting hole, the limiting device comprises a limiting seat, a through hole is formed in the limiting seat, a limiting rod is arranged in the through hole, and the limiting rod penetrates through the through hole to be matched with the limiting hole. The limiting holes are two and are respectively arranged at the valve covers corresponding to the limiting rods when the ball valve is fully opened or fully closed, at the moment, the through holes and the limiting holes are positioned on the same straight line in the vertical direction, and the limiting rods are inserted into and penetrate through the through holes to be matched with the corresponding limiting holes, so that the full-opening or full-closing state of the valve can be limited.

Preferably, the valve cover is further provided with an identification plate. The operating personnel can confirm whether the ball valve is in an opening or closing state according to the indication of the identification plate, so that misoperation is reduced.

Preferably, the aperture of the through hole close to the valve cover is larger than that of the through hole far away from the valve cover, a movable block is arranged in the through hole close to the valve cover, and the limiting rod is fixedly connected with the movable block. If the hole diameters of the movable block and the through hole are not arranged, when the limiting structure of the limiting rod and the limiting hole is released, the whole limiting rod is easily pulled out, an operator needs to align the pulled limiting rod with the through hole again, the pulled limiting rod is easily lost, the hole diameters of the through hole and the movable block are arranged, the limiting rod is prevented from being pulled out of the through hole, and the operator does not need to align the limiting rod again.

Preferably, the limiting rod is sleeved with a first pressure spring, one end of the first pressure spring abuts against the inner wall of the through hole close to the valve cover, and the other end of the first pressure spring abuts against the movable block. At the valve rod rotation in-process of ball valve, operating personnel can upwards mention the gag lever post with the hand, the gag lever post breaks away from spacing hole, limit structure removes, at this moment, first pressure spring is compressed, the movable block rises along the great perforating hole in aperture under the drive of first pressure spring, when the valve reaches full open or close, operating personnel only need will apply the power on the gag lever post and detach, at this moment, first pressure spring no longer receives the effect of power, will resume deformation, at the in-process that first pressure spring resumes deformation, gag lever post and movable block will downstream, circle gag lever post bottom and spacing hole deuterogamy, limit structure comprises again, the use of first pressure spring makes limit structure only need operating personnel application of force once when using, it is more convenient to operate.

Preferably, the top of the limiting rod is fixedly provided with a pull cover. The outer surface of the limiting rod is smooth, and the limiting rod is easy to slip when an operator lifts the limiting rod by hands.

Preferably, an inverted cone opening is formed in the valve body, and the valve core is inverted cone matched with the inverted cone opening. In the assembly process of the ball valve, the valve core and the valve body are matched by the conical surfaces, so that the valve core and the valve body have self-adaptive sealing performance, and the leakage phenomenon is avoided.

Preferably, a second pressure spring is sleeved on the valve rod, one end of the second pressure spring is abutted against the top of the valve core, and the other end of the second pressure spring is abutted against the valve cover. The pretightening force of the second pressure spring and the gravity of the valve core can enable the valve core to be matched with the valve seat more tightly, and the sealing performance of the ball valve is further improved.

Preferably, a valve seat cushion and a valve seat ring are arranged on the valve seat. The setting of valve seat pad can provide the buffering between valve body and disk seat, avoids both to take place great wearing and tearing, and the valve seat circle is made by metal, and metallic intensity is great, helps avoiding the deformation of disk seat and causes the sealed effect between case and the disk seat to descend.

Preferably, the top of the valve rod is sleeved with a handle. The setting up of handle can be used as the application of force point that the staff opened or closed the ball valve on the one hand, facilitates the use, and on the other hand, the handle has still been injectd the limiting plate in vertical ascending position, avoids it to take place the ascending removal in vertical direction, influences stop device's use.

The utility model has the following advantages: the limiting device arranged in the utility model can limit the full opening or full closing of the ball valve, so as to avoid the influence on the use of the valve caused by the mistaken opening or closing of the valve due to the collision of people; (2) the use of the first pressure spring in the limiting device enables the limiting structure to be used, only one time of force application is needed by an operator, and the operation is more convenient; (3) the conical surfaces of the valve seat and the valve core are matched, so that the valve core and the valve body have self-adaptive sealing performance, and the leakage phenomenon is avoided.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic structural view of the limiting device of the present invention.

Fig. 4 is a schematic structural diagram of the novel valve seat.

In the figure: 1. the valve comprises a valve body, 2, a valve cover, 21, a limiting hole, 22, a signboard, 3, a valve seat, 31, a valve seat cushion, 32, a valve seat ring, 4, a valve core, 5, a valve rod, 51, a second pressure spring, 52, a handle, 6, a limiting plate, 7, a limiting device, 71, a limiting seat, 72, a through hole, 73, a limiting rod, 74, a movable block, 75, a first pressure spring, 76 and a pull cover.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

As shown in fig. 1 and 2, the ball valve with the limiting function comprises a valve body 1 with a circulation hole, a valve cover 2 fixedly connected with the valve body 1, a valve seat 3, a valve core 4 and a valve rod 5, wherein a limiting plate 6 is arranged above the valve cover 2, one end of the limiting plate 6 is fixedly connected with the valve rod 5, and the other end of the limiting plate 6 is provided with a limiting device 7. When the ball valve is used, the ball valve is required to be in a fully-opened or fully-closed state according to the requirement, once a field operator accidentally touches a switch of the ball valve, the opening state of the ball valve can be changed, and media flowing through the ball valve are easily affected.

Specifically, a sealing ring is arranged at the joint of the valve rod 3 and the valve cover 2. The connection sealing performance between the valve rod 3 and the valve cover 2 is enhanced, and the leakage of a medium flowing through the ball valve is avoided.

Specifically, the valve cover 2 is further provided with an identification plate 22. The operator can determine whether the ball valve is in an opening state or a closing state according to the indication of the identification device 22, so that misoperation is reduced.

Specifically, an inverted cone opening is arranged in the valve body 1, and the valve core 4 is inverted cone matched with the inverted cone opening. In the assembly process of the ball valve, the valve core 4 is matched with the valve body 1 in a conical surface mode, so that the valve core 4 and the valve body 1 have self-adaptive sealing performance, and the leakage phenomenon is avoided.

Specifically, a second pressure spring 51 is sleeved on the valve rod 5, one end of the second pressure spring 51 is abutted against the top of the valve core 4, and the other end of the second pressure spring 51 is abutted against the valve cover 2. The pretightening force of the second pressure spring 51 and the gravity of the valve core 4 can make the valve core 4 and the valve seat 3 matched more tightly, which is helpful for further improving the sealing performance of the ball valve.

As shown in fig. 3, specifically, a limiting hole 21 is formed in the bonnet 2, the limiting device 7 includes a limiting seat 71, a through hole 72 is formed in the limiting seat 71, a limiting rod 73 is formed in the through hole 72, and the limiting rod 73 passes through the through hole 72 to be matched with the limiting hole 21. The two limiting holes 21 are respectively arranged at the valve cover 2 corresponding to the limiting rod 33 when the ball valve is fully opened or fully closed, the through hole 72 and the limiting hole 21 are positioned on the same straight line in the vertical direction, and the limiting rod 73 is inserted into and penetrates through the through hole 72 to be matched with the corresponding limiting hole 21, so that the full-opening or full-closing state of the valve can be limited.

Specifically, the aperture of the through hole 72 close to the valve cover 22 is larger than the aperture of the through hole far from the valve cover 22, a movable block 74 is arranged in the through hole 72 close to the valve cover 22, and the limit rod 73 is fixedly connected with the movable block 74. If the aperture of the movable block 74 and the through hole 72 is not provided, when the limit structure between the limit rod 73 and the limit hole 21 is released, the whole limit rod 73 is easily pulled out, an operator needs to align the pulled limit rod 73 with the through hole 72 again, and the pulled limit rod 73 is easily lost, and the aperture size of the through hole 72 and the arrangement of the movable block 74 can prevent the whole limit rod 73 from being pulled out from the through hole 72, so that the operator does not need to align again.

Specifically, the limiting rod 73 is sleeved with a first compression spring 75, one end of the first compression spring 75 abuts against the inner wall of the through hole 72 close to the valve cover 2, and the other end abuts against the movable block 74. At the 5 rotation in-process of valve rod of ball valve, operating personnel can upwards lift gag lever post 73 with the hand, gag lever post 73 breaks away from spacing hole 21, limit structure removes, at this moment, first pressure spring 75 is compressed, movable block 74 rises along the great perforating hole 72 in aperture under the drive of first pressure spring 75, when the valve reaches full-open or close completely, operating personnel only need will apply the power on gag lever post 73 and detach, at this moment, first pressure spring 75 no longer receives the effect of power, will resume deformation, at the in-process that first pressure spring 75 resumes deformation, gag lever post 73 and movable block 74 will downstream, circle gag lever post 73 bottom cooperates once more with spacing hole 21, limit structure reconfigures, the use of first pressure spring 75 makes limit structure only need operating personnel application of force once when using, it is more convenient to operate.

Specifically, a pull cover 76 is fixedly arranged on the top of the limiting rod 73. The outer surface of the limiting rod 73 is smooth, and the limiting rod 73 is easy to slip when an operator lifts the limiting rod 73 by hands.

As shown in fig. 4, specifically, a seat cushion 31 and a seat ring 32 are provided on the valve seat 3. The valve seat cushion 31 can provide buffering between the valve body 1 and the valve seat 3 to avoid great abrasion between the valve body 1 and the valve seat 3, and the valve seat ring 32 is made of metal, so that the metal has high strength, and the deformation of the valve seat 3 is avoided to reduce the sealing effect between the valve core 4 and the valve seat 3.

Specifically, a handle 52 is sleeved on the top of the valve rod 5. The setting of handle 52 on the one hand can be used as the application of force point that the staff opened or closed the ball valve, facilitates the use, and on the other hand, handle 52 has still been injectd the limiting plate in vertical ascending position, avoids it to take place the ascending removal of vertical direction, influences stop device's use.

Claims

1. The utility model provides a take limit function's ball valve, including valve body (1) that has the circulation hole, with valve body (1) fixed connection's valve gap (2), disk seat (3), case (4) and valve rod (5), its characterized in that, valve gap (2) top is equipped with limiting plate (6), the one end and valve rod (5) fixed connection of limiting plate (6), the other end of limiting plate (6) is equipped with stop device (7).

2. The ball valve with the limiting function according to claim 1, wherein a limiting hole (21) is formed in the valve cover (2), the limiting device (7) comprises a limiting seat (71), a through hole (72) is formed in the limiting seat (71), a limiting rod (73) is arranged in the through hole (72), and the limiting rod (73) penetrates through the through hole (72) to be matched with the limiting hole (21).

3. The ball valve with the limiting function according to claim 2, wherein the diameter of the through hole (72) close to the valve cover (2) is larger than the diameter of the through hole (72) far away from the valve cover (2), a movable block (74) is arranged in the through hole (72) close to the valve cover (2), and the limiting rod (73) is fixedly connected with the movable block (74).

4. A ball valve with a limiting function according to claim 3, wherein the limiting rod (73) is sleeved with a first compression spring (75), one end of the first compression spring (75) abuts against the inner wall of the through hole (72) close to the valve cover (2), and the other end abuts against the movable block (74).

5. The ball valve with the limiting function according to claim 2 or 3, wherein a pull cover (76) is fixedly arranged at the top of the limiting rod (73).

6. The ball valve with the limiting function according to claim 1, wherein an inverted cone-shaped opening is formed in the valve body (1), and the valve core (4) is inverted cone-shaped and matched with the inverted cone-shaped opening.

7. The ball valve with the limiting function according to claim 1, wherein a second compression spring (51) is sleeved on the valve rod (5), one end of the second compression spring (51) is abutted against the top of the valve core (4), and the other end of the second compression spring is abutted against the valve cover (2).

8. The ball valve with the limiting function according to claim 1, characterized in that a valve seat cushion (31) and a valve seat ring (32) are arranged on the valve seat (3).