阅读说明：本技术 一种带有转动保护机构的球阀 (Ball valve with rotation protection mechanism ) 是由 胡开平 章文忠 于 2019-03-21 设计创作，主要内容包括：一种带有转动保护机构的球阀,包括阀体、球体、阀杆,所述的阀体的两侧均设有第一连接法兰,阀体的顶部设有第二连接法兰,第二连接法兰通过第一紧固螺栓与阀座连接,阀体内设有球体,球体上设有通孔,球体的顶部设有固定孔,固定孔上设有多个限位槽,固定孔的底部通过弹簧与轴承内环连接,轴承内环通过多个轴承转轴与轴承外环转动连接,轴承外环与阀杆的底部固定连接,阀杆上设有多个限位块,阀杆上套装有限位套,限位套通过第三紧固螺栓与球体的顶部固定连接,阀杆的顶部设有把手。采用上述结构,避免了因为失误触碰阀门而使阀柄旋转,从而改变阀门启闭状态的情况发生,提高了球阀本体的安全性；整个装置结构简单,操作方便,实用性强。(The utility model provides a ball valve with rotation protection mechanism, including valve body, spheroid, valve rod, the both sides of valve body all be equipped with first flange, the top of valve body is equipped with second flange, second flange is connected with the disk seat through first fastening bolt, be equipped with the spheroid in the valve body, be equipped with the through-hole on the spheroid, spheroidal top is equipped with the fixed orifices, be equipped with a plurality of spacing grooves on the fixed orifices, the bottom of fixed orifices is passed through the spring and is connected with the bearing inner ring, the bearing inner ring rotates with the bearing outer ring through a plurality of bearing pivot and is connected, the bottom fixed connection of bearing outer ring and valve rod, be equipped with a plurality of stoppers on the valve rod, the cover is equipped with the stop collar on the valve rod, the stop collar passes through third fastening bolt and spheroidal top fixed connection, the. By adopting the structure, the valve handle is prevented from rotating due to the fact that the valve is touched by mistake, the opening and closing state of the valve is changed, and the safety of the ball valve body is improved; the whole device is simple in structure, convenient to operate and high in practicability.)

1. The utility model provides a ball valve with rotation protection mechanism, includes valve body (1), spheroid (2), valve rod (3), its characterized in that: the two sides of the valve body (1) are respectively provided with a first connecting flange (5), the top of the valve body (1) is provided with a second connecting flange (6), the second connecting flange (6) is connected with a valve seat (7) through a first fastening bolt (8), a ball body (2) is arranged in the valve body (1), a through hole (10) is formed in the ball body (2), the top of the ball body (1) is provided with a fixing hole (16), a plurality of limiting grooves (22) are formed in the fixing hole (16), the bottom of the fixing hole (16) is connected with a bearing inner ring (18) through a spring (17), the bearing inner ring (18) is rotatably connected with a bearing outer ring (19) through a plurality of bearing rotating shafts (20), the bearing outer ring (19) is fixedly connected with the bottom of a valve rod (3), a plurality of limiting blocks (21) are arranged on the valve rod (3), a limiting sleeve (14) is sleeved on the valve rod (3), and the limiting sleeve (14) is fixedly connected with the top of the ball body (2, the top of the valve rod (3) is provided with a handle (4).

2. A ball valve with a rotation protection mechanism according to claim 1, wherein: the limiting blocks (21) and the limiting grooves (22) are identical in number and are in one-to-one correspondence, and the limiting blocks (21) are completely matched with the limiting grooves (22).

3. A ball valve with a rotation protection mechanism according to claim 1, wherein: the diameter of the valve rod (3) is the same as that of the fixing hole (16), and the outer diameter of the bearing outer ring (19) is the same as that of the fixing hole (16).

4. A ball valve with a rotation protection mechanism according to claim 1, wherein: the depth of the limiting groove (22) is not more than one third of the depth of the fixing hole (16).

5. A ball valve with a rotation protection mechanism according to claim 1, wherein: the highest height of a bearing formed by the bearing inner ring (18), the bearing outer ring (19) and the bearing rotating shaft (20) is not more than one third of the depth of the fixing hole (16).

6. A ball valve with a rotation protection mechanism according to claim 1, wherein: the valve rod (3) on the cover be equipped with limiting plate (11) and sealing ring (13), sealing ring (13) are located between limiting plate (11) and stop collar (14), limiting plate (11) are connected with disk seat (7) through second fastening bolt (12).

7. A ball valve with a rotation protection mechanism according to claim 1, wherein: the height of the inner space of the limiting sleeve (14) is not lower than that of the limiting block (21).

8. A ball valve with a rotation protection mechanism according to claim 1, wherein: and a sealing ring (9) is arranged at the joint of the second connecting flange (6) and the valve seat (7).

Technical Field

The invention relates to the field of valves, in particular to a ball valve with a rotation protection mechanism.

Background

In transportation systems for various fluids such as water, oil, chemical liquid, etc., valves are widely used as important control components, and have various functions such as stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting, overflowing, relieving pressure, etc., wherein the functions are divided into different valve types and specifications. The ball valve is a widely used variety in the valve, and the shadow of the ball valve can be seen in the places which are big and small in life, but the ball valve has a problem, namely, the fastness is not strong, the opening and closing state of the ball valve is easy to change due to the fact that a hand collides a valve handle by mistake when the ball valve is controlled conveniently, so that the state of fluid in a pipeline is changed, and when the ball valve is used as a pipeline of dangerous fluid, a safety accident can be caused more seriously.

Disclosure of Invention

The invention aims to solve the technical problem of providing a ball valve with a rotation protection mechanism, which avoids the situation that the opening and closing state of the valve is changed because a valve is touched by mistake to rotate a valve handle, improves the operability of valve control and improves the safety of a ball valve body; the whole device is simple in structure, convenient to operate and high in practicability.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a ball valve with rotation protection mechanism, including valve body, spheroid, valve rod, the both sides of valve body all be equipped with first flange, the top of valve body is equipped with second flange, second flange is connected with the disk seat through first fastening bolt, be equipped with the spheroid in the valve body, be equipped with the through-hole on the spheroid, spheroidal top is equipped with the fixed orifices, be equipped with a plurality of spacing grooves on the fixed orifices, the bottom of fixed orifices is passed through the spring and is connected with the bearing inner ring, the bearing inner ring rotates with the bearing outer ring through a plurality of bearing pivot and is connected, the bottom fixed connection of bearing outer ring and valve rod, be equipped with a plurality of stoppers on the valve rod, the cover is equipped with the stop collar on the valve rod, the stop collar passes through third fastening bolt and spheroidal top fixed connection, the.

In an optimized scheme, the limiting blocks and the limiting grooves are the same in number and are in one-to-one correspondence, and the limiting blocks are completely matched with the limiting grooves.

In a preferred scheme, the diameter of the valve rod is the same as that of the fixing hole, and the outer diameter of the bearing outer ring is the same as that of the fixing hole.

In a preferred scheme, the depth of the limiting groove is not more than one third of the depth of the fixing hole.

In a preferred scheme, the highest height of a bearing consisting of the bearing inner ring, the bearing outer ring and the bearing rotating shaft does not exceed one third of the depth of the fixed hole.

In the preferred scheme, the valve rod on the cover be equipped with limiting plate and sealing ring, the sealing ring is located between limiting plate and the stop collar, the limiting plate passes through the second fastening bolt and is connected with the disk seat.

In the preferred scheme, the height of the inner space of the limiting sleeve is not lower than that of the limiting block.

In a preferable scheme, a sealing ring is arranged at the joint of the second connecting flange and the valve seat.

The ball valve with the rotation protection mechanism, provided by the invention, has the following beneficial effects by adopting the structure:

(1) the state of the valve needs to be changed by only manually pressing down the valve rod to enable the limiting block to enter the limiting groove and then rotate, so that the condition that the opening and closing state of the ball valve is changed due to the fact that a valve handle is touched by mistake is avoided;

(2) when the ball valve is out of order, the valve handle is touched, and the bottom of the valve rod can only rotate in the limiting sleeve due to the action of the bearing and the spring, but cannot drive the ball body of the ball valve to rotate, so that the safety of the ball valve is improved;

(3) the whole device is simple in structure, convenient to use and produce and high in practicability.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the overall structure of the present invention.

Fig. 3 is a cross-sectional view of the ball and stem connection of the present invention.

Fig. 4 is an exploded view of the ball and valve stem connection of the present invention.

In the figure: the valve comprises a valve body 1, a ball body 2, a valve rod 3, a handle 4, a first connecting flange 5, a second connecting flange 6, a valve seat 7, a first fastening bolt 8, a sealing ring 9, a through hole 10, a limiting plate 11, a second fastening bolt 12, a sealing ring 13, a limiting sleeve 14, a third fastening bolt 15, a fixing hole 16, a spring 17, a bearing inner ring 18, a bearing outer ring 19, a bearing rotating shaft 20, a limiting block 21 and a limiting groove 22.

Detailed Description

As in fig. 1-4: a ball valve with a rotation protection mechanism, which comprises a valve body 1 and a ball body 2, valve rod 3, the both sides of valve body 1 all be equipped with first flange 5, the top of valve body 1 is equipped with second flange 6, second flange 6 is connected with disk seat 7 through first fastening bolt 8, be equipped with spheroid 2 in the valve body 1, be equipped with through-hole 10 on the spheroid 2, the top of spheroid 1 is equipped with fixed orifices 16, be equipped with a plurality of spacing grooves 22 on the fixed orifices 16, spring 17 and bearing inner ring 18 are passed through to the bottom of fixed orifices 16 and are connected, bearing inner ring 18 rotates with bearing outer ring 19 through a plurality of bearing pivot 20 and is connected, bearing outer ring 19 and valve rod 3's bottom fixed connection, be equipped with a plurality of stopper 21 on the valve rod 3, the cover is equipped with stop collar 14 on the valve rod 3, stop collar 14 passes through third fastening bolt 15 and spheroid 2's top fixed connection, the top of valve rod 3 is equipped with handle 4.

In an optimal scheme, the limiting blocks 21 and the limiting grooves 22 are the same in number and are in one-to-one correspondence, and the limiting blocks 21 are completely matched with the limiting grooves 22. The control stability is improved, and the practicability is improved.

In a preferred scheme, the diameter of the valve rod 3 is the same as that of the fixing hole 16, and the outer diameter of the bearing outer ring 19 is the same as that of the fixing hole 16. The operation stability is improved, the valve rod 3 is convenient to move in the fixing hole 16, and the stability is sufficient.

In a preferred scheme, the depth of the limiting groove 22 is not more than one third of the depth of the fixing hole 16. The stability of controlling is guaranteed, and the phenomenon that the reciprocating of valve rod 3 is influenced to the too much degree of depth of limiting groove 22, and the effect is not good is controlled to the result of avoiding.

In a preferred scheme, the highest height of the bearing formed by the bearing inner ring 18, the bearing outer ring 19 and the bearing rotating shaft 20 is not more than one third of the depth of the fixing hole 16. The control stability is ensured, and the situation that the control effect is not good due to the fact that the vertical movement of the valve rod 3 is influenced by the fact that the height of a bearing formed by the bearing inner ring 18, the bearing outer ring 19 and the bearing rotating shaft 20 is too high is avoided

In an optimal scheme, the valve rod 3 is sleeved with a limiting plate 11 and a sealing ring 13, the sealing ring 13 is located between the limiting plate 11 and a limiting sleeve 14, and the limiting plate 11 is connected with the valve seat 7 through a second fastening bolt 12. The sealing performance of the whole ball valve is improved.

In a preferable scheme, the height of the inner space of the limiting sleeve 14 is not lower than that of the limiting block 21. The bottom of the valve rod 3 can rotate in the limiting sleeve 14 conveniently, and the practicability is improved.

In a preferred scheme, a sealing ring 9 is arranged at the joint of the second connecting flange 6 and the valve seat 7. The sealing performance of the whole ball valve is improved.

The using method of the invention comprises the following steps: when the handle 4 of the ball valve is touched by mistake, the handle 4 rotates to drive the valve rod 3 to rotate, the limiting block 21 at the bottom of the valve rod 3 is positioned in the limiting sleeve 14, although the valve rod 3 rotates, the limiting block 21 is ensured to move in the limiting sleeve 14 all the time under the action of the spring 17, and the ball 2 in the ball valve cannot be driven to rotate due to the convenient rotation under the action of the bearing;

when the opening and closing state of the ball valve needs to be changed, the handle 4 is firstly held, then the ball valve is pressed downwards along the direction of the valve rod 3, the limiting block 21 enters the limiting groove 22, after the ball valve is clamped, the holding handle 4 is kept in a pressing state, the ball valve can be driven to rotate by rotating the handle 4, after the rotation is finished, the handle 4 is loosened, the limiting block 21 at the bottom of the valve rod 3 returns to the limiting sleeve 14 again under the action of the spring 17, and the error protection effect is achieved on the opening and closing state of the ball valve.

The invention has the beneficial effects that: the situation that the opening and closing state of the valve is changed due to the fact that the valve handle rotates due to the fact that the valve is touched by mistake is avoided, the operability of valve control is improved, and therefore the safety of the ball valve body is improved; the whole device is simple in structure, convenient to operate and high in practicability.