Ball valve

Abstract

The utility model relates to a ball valve which comprises a valve body, a ball body rotationally connected into the valve body, a matching groove formed in the ball body, a connecting rod matched with the matching groove in an inserted mode and a valve rod arranged on the connecting rod. The inner wall of the valve body is provided with two insertion holes matched with the insertion rod in an insertion mode, the ball valve is in an open state when the insertion rod is inserted into one insertion hole, and the ball valve is in a closed state when the insertion rod is inserted into the other insertion hole; a first sliding groove is formed in the connecting rod, a first spring is arranged in the first sliding groove, the elastic force of the first spring acts on the inserting rod, the first spring is used for pressing the inserting rod into the inserting hole in an abutting mode, and a driving assembly is arranged on the connecting rod and used for driving the inserting rod to move into the first sliding groove. Rotation of the valve rod and the ball body can be actively limited, and the stability of the opening and closing state of the ball valve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the valve field, in particular to a ball valve. BACKGROUND

[0002] Ball valve is one kind of valve, its opening and closing part is the ball in the middle of the channel, that is, the center of the valve body, which is driven by the valve stem and rotates around the ball valve axis.

[0003] On the pipeline, the ball can flexibly control the flow of medium in the pipeline. However, the ordinary ball valve does not have locking function. If the valve stem is collided by external object and rotates, the ball will also rotate, which will change the flow state of the ball valve to the medium. SUMMARY

[0004] The application provides a ball valve which can actively limit the rotation of the valve stem and the ball, and ensure the stability of the opening and closing state of the ball valve.

[0005] The ball valve provided by the application adopts the following technical scheme:

[0006] A ball valve, comprising a valve body, a ball body rotatably connected in the valve body, a matching groove opened on the ball body, a connecting rod in plug-in cooperation with the matching groove, a valve stem provided on the connecting rod, a first sliding groove is opened on the ball body, a plug rod is slidably connected in the first sliding groove, two plug holes in plug-in cooperation with the plug rod are provided on the inner wall of the valve body, the ball valve is in an open state when the plug rod is inserted into one of the plug holes, and the ball valve is in a closed state when the plug rod is inserted into the other plug hole; a first spring is arranged in the first sliding groove, the elastic force of the first spring acts on the plug rod, the first spring is used for pressing the plug rod in the plug hole, a driving assembly is arranged on the connecting rod, and the driving assembly is used for driving the plug rod to move into the first sliding groove.

[0007] By adopting the above technical scheme, the ball valve is in an open state under the initial rotating table, the state of the ball valve needs to be changed, the plug rod is driven to move into the first sliding groove by using the driving assembly, and the plug-in cooperation between the plug rod and one of the plug holes is cancelled. Then the valve stem is rotated to make the ball rotate, and finally the first sliding groove is butt jointed with the other plug hole, then the control of the plug rod by the driving assembly is released, the first spring rebounds to insert the plug rod into the plug hole, so as to limit the rotation of the valve stem and the ball, and ensure the stability of the opening and closing state of the ball valve.

[0008] Preferably, a second sliding groove is formed in the connecting rod, the driving assembly comprises a resisting rod slidingly connected in the second sliding groove, a first matching rod connected with the inserting rod, a first communicating hole formed in the ball and used for communicating the first sliding groove and the matching groove, and an avoiding groove formed in the connecting rod; the first spring is sleeved on the first matching rod, the first communicating hole is opposite to the avoiding groove, the first matching rod passes through the first communicating hole and extends into the avoiding groove, and one end of the first matching rod extending into the avoiding groove is provided with an inclined groove; one end of the resisting rod extends out of the connecting rod, and the other end of the resisting rod extends into the avoiding groove and is matched with the inclined groove; and the resisting rod abuts against the inclined groove to drive the first matching rod to move into the avoiding groove.

[0009] By adopting the above technical scheme, when the state of the ball valve needs to be changed, the first matching rod is driven to move into the avoiding groove by pressing the resisting rod, the first matching rod moves into the avoiding groove, the inserting rod is slidingly moved into the first sliding groove, the inserting rod is disengaged from the inserting hole, the first spring is compressed, the valve rod is rotated to drive the ball to rotate, the first sliding groove is ready for the other inserting rod, the first spring is released to drive the inserting rod to be pressed into the other inserting hole, the movement of the ball is limited, and the first matching rod is driven to move back to the top of the resisting rod.

[0010] Preferably, a third sliding groove is formed in the side wall of the second sliding groove, and a anti-falling block is arranged on the resisting rod and slidingly connected in the third sliding groove.

[0011] By adopting the above technical scheme, the resisting rod is prevented from sliding out of the second sliding groove.

[0012] Preferably, a second spring is arranged in the third sliding groove, the second spring is located on the side of the anti-falling block close to the avoiding groove, the elastic force of the second spring acts on the anti-falling block, and the second spring always drives the anti-falling block to move away from the avoiding groove.

[0013] By adopting the above technical scheme, when the resisting rod is pressed, the anti-falling block moves close to the avoiding groove, the anti-falling block abuts against the second spring and compresses the second spring, and when the pressing force of the resisting rod disappears, the second spring is released to drive the anti-falling block and the resisting rod to move back, and finally the second spring abuts against the anti-falling block on the side wall of the third sliding groove away from the avoiding groove.

[0014] Preferably, a pressing cap is arranged on one end of the resisting rod extending out of the connecting rod, the middle part of the pressing cap is concave to form an accommodating area, and a plurality of anti-skid lines are arranged in the accommodating area.

[0015] By adopting the above technical scheme, the resisting rod is pressed.

[0016] Preferably, a nut is threadedly connected to the connecting rod, the nut presses the valve rod against the connecting rod, the pressing cap is located on the side of the nut away from the valve body, and the diameter of the pressing cap is smaller than the inner hole diameter of the nut.

[0017] By adopting the technical scheme, the valve rod is conveniently assembled.

[0018] Preferably, one end of the valve rod is bent towards one side of the valve body to form a limiting part, the valve body is provided with two limiting blocks, the limiting part is located between the two limiting blocks, the first sliding groove is directly opposite one of the two insertion holes when the limiting part is in abutment with one of the two limiting blocks, and the first sliding groove is directly opposite the other insertion hole when the limiting part is in abutment with the other limiting block.

[0019] By adopting the technical scheme, the second sliding groove and the two insertion holes are conveniently aligned when the valve rod rotates.

[0020] The technical effects of the utility model mainly lie in the following aspects:

[0021] 1. The utility model can actively limit the rotation of the valve rod and the ball, and ensure the stability of the ball valve state.

[0022] 2. The pressing cap and the abutting rod can release the plug-in cooperation of the plug rod and the insertion hole.

[0023] 3. The limiting part and the two limiting blocks cooperate to ensure the alignment of the second sliding groove and the two insertion holes when the valve rod rotates. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view when the ball valve is in an open state.

[0025] Figure 2 is Figure 1 is a partial sectional view of the ball valve along the A-A line.

[0026] Figure 3 is Figure 2 is a partial enlarged view of B.

[0027] Figure 4 is Figure 1 is a partial sectional view of the ball valve along the C-C line.

[0028] Fig. 1 is a valve body; 11 is a hole; 2 is a ball; 21 is a matching groove; 22 is a first sliding groove; 23 is a plug rod; 24 is a first spring; 3 is a connecting rod; 31 is a valve rod; 32 is a second sliding groove; 33 is a second spring; 34 is a pressing cap; 341 is a containing area; 342 is an anti-skid line; 35 is a nut; 4 is a driving assembly; 41 is a resisting rod; 411 is an anti-coming-off block; 42 is a first matching rod; 421 is an inclined groove; 43 is a first communication hole; 44 is an avoiding groove; 5 is a limiting part; 6 is a limiting block; 7 is a third sliding groove. DETAILED DESCRIPTION

[0029] The application will be further described in detail below with reference to the accompanying drawings, so that the technical scheme of the application can be more easily understood and mastered.

[0030] Referring to Figures 1-3 , the ball valve of the embodiment comprises a valve body 1, a ball 2 installed in the valve body 1, a matching groove 21 opened on the top of the ball 2, a connecting rod 3 matched with the matching groove 21, and a valve rod 31 installed on the connecting rod 3. The connecting rod 3 is rotationally connected to the valve body 1. A nut 35 is threadedly connected to the connecting rod 3, and the nut 35 presses the valve rod 31 against the connecting rod 3.

[0031] Referring to Figures 1-4 , the ball 2 is provided with a first sliding groove 22, and a plug rod 23 is horizontally slidably connected in the first sliding groove 22. The inner wall of the valve body 1 is provided with two holes 11 matched with the plug rod 23. When the plug rod 23 is inserted into one of the holes 11, the ball valve is in an open state, and when the plug rod 23 is inserted into the other hole 11, the ball valve is in a closed state.

[0032] Referring to Figures 1-4 , one end of the valve rod 31 is bent towards one side of the valve body 1 to form a limiting part 5. The valve body 1 is provided with two limiting blocks 6, and the limiting part 5 is located between the two limiting blocks 6. When the limiting part 5 is rotated to abut against one of the limiting blocks 6, the first sliding groove 22 is aligned with one of the holes 11. When the limiting part 5 is rotated to abut against the other limiting block 6, the first sliding groove 22 is aligned with the other hole 11.

[0033] Referring to Figures 1-3 , a first spring 24 is placed in the first sliding groove 22, and the first spring 24 is located on the side of the plug rod 23 close to the connecting rod 3. One end of the first spring 24 abuts against the plug rod 23, and the other end of the first spring 24 abuts against the bottom wall of the first sliding groove 22. The elastic force of the first spring 24 acts on the plug rod 23, and the first spring 24 is used to press the plug rod 23 against the hole 11.

[0034] Referring to Figures 1-3The connecting rod 3 is provided with a driving assembly 4, which is used for driving the insertion rod 23 to move into the first sliding slot 22. The connecting rod 3 is provided with a second sliding slot 32, and the driving assembly 4 comprises a resisting rod 41 which is slidably connected in the second sliding slot 32 in the vertical direction, a first matching rod 42 which is connected with the insertion rod 23, a first communication hole 43 which is arranged on the ball 2 and is used for communicating the first sliding slot 22 and the matching slot 21, and an avoiding slot 44 which is arranged at the bottom of the connecting rod 3. The top end of the resisting rod 41 extends out of the connecting rod 3, and the bottom end of the resisting rod 41 extends into the avoiding slot 44.

[0035] With reference to Figures 1-3 The first spring 24 is sleeved on the first matching rod 42. The first communication hole 43 is opposite to the avoiding slot 44, the diameter of the first matching rod 42 is smaller than that of the insertion rod 23, one end of the first matching rod 42 which is away from the insertion rod 23 penetrates through the first communication hole 43 and extends into the avoiding slot 44, and the one end of the first matching rod 42 which extends into the avoiding slot 44 is provided with an inclined slot 421, the bottom end of the resisting rod 41 is matched with the inclined slot 421, and the resisting rod 41 abuts against the inclined slot 421 to drive the first matching rod 42 to move into the second sliding slot 32.

[0036] With reference to Figures 1-3 The sidewall of the second sliding slot 32 is provided with a third sliding slot 7 which is located above the avoiding slot 44. The resisting rod 41 is sleeved with an anti-dropping block 411 which is slidably connected in the third sliding slot 7 in the vertical direction. The third sliding slot 7 is provided with a second spring 33 which is located on the side of the anti-dropping block 411 which is close to the avoiding slot 44, and the second spring 33 is sleeved on the resisting rod 41. The elastic force of the second spring 33 acts on the anti-dropping block 411, and the second spring 33 always drives the anti-dropping block 411 to move away from the avoiding slot 44. In the state without external force, the second spring 33 abuts against the sidewall of the third sliding slot 7 which is away from the avoiding slot 44, and the resisting rod 41 abuts against the inclined slot 421.

[0037] With reference to Figures 1-3 One end of the resisting rod 41 which extends out of the connecting rod 3 is provided with a pressing cap 34 which is located on the side of the nut 35 which is away from the valve body 1, and the diameter of the pressing cap 34 is smaller than the inner hole diameter of the nut 35. The middle part of the pressing cap 34 is concave to form an accommodating area 341, and a plurality of anti-skid lines 342 are arranged in the accommodating area 341.

[0038] The operation steps of the ball valve state switching are as follows:

[0039] With reference to Figures 1-3, the initial rotary table lower ball valve is in an open state, wherein the insertion rod 23 is inserted into one of the insertion holes 11, and the limiting portion 5 abuts against one of the limiting blocks 6. When the ball valve needs to be closed, the pressing cap 34 and the abutting rod 41 are first pressed, so that the abutting rod 41 moves downward. Pressing the abutting rod 41 causes the first matching rod 42 to move into the avoiding groove 44, and the first matching rod 42 moving into the avoiding groove 44 causes the insertion rod 23 to slide into the first sliding groove 22, thereby releasing the insertion of the insertion rod 23 into one of the insertion holes 11, and causing the first spring 24 to be compressed under stress. At the same time, the abutting rod 41 moves downward, causing the anti-escape block 411 to move downward, which presses the second spring 33, causing the second spring 33 to be compressed under stress.

[0040] With reference to Figures 1-4 , after the insertion of the insertion rod 23 into one of the insertion holes 11 is released, the valve rod 31 is rotated, causing the limiting portion 5 to move towards the other limiting block 6, and finally abutting against the other limiting block 6. At this time, the first sliding groove 22 moves to be opposite to the other insertion hole 11, and the ball valve is in a closed state. Then, the pressing cap 34 is released to cancel the pressing of the abutting rod 41. After the pressing of the abutting rod 41 is cancelled, the first spring 24 and the second spring 33 rebound. When the first spring 24 rebounds, it drives the insertion rod 23 to move into the other insertion hole 11, thereby limiting the rotation of the ball 2 and the valve rod 31. Even if an external object collides with the valve rod 31, the valve rod 31 will not rotate.

[0041] With reference to Figures 1-4 , when the insertion rod 23 moves into the insertion hole 11, the first matching rod 42 moves into the first sliding groove 22, and the first matching rod 42 moving into the first sliding groove 22 drives the abutting rod 41 to move upward and reset through the inclined groove 421. The rebound of the second spring 33 drives the anti-escape block 411 and the abutting rod 41 to move and reset, and under the influence of the two reset forces, the abutting rod 41 moves and resets on the wall.

[0042] Of course, the above is only a typical example of the present application, and in addition to this, the present application can have other various specific embodiments, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A ball valve, comprising a valve body (1), a ball body (2) rotatably connected in the valve body (1), a matching groove (21) opened on the ball body (2), a connecting rod (3) in plug matching with the matching groove (21), and a valve rod (31) provided on the connecting rod (3), characterized in that: The first sliding groove (22) is arranged on the ball (2), and the plug rod (23) is slidably connected in the first sliding groove (22); the two insertion holes (11) are arranged on the inner wall of the valve body (1) and are matched with the plug rod (23); when the plug rod (23) is inserted into one of the insertion holes (11), the ball valve is in an open state; when the plug rod (23) is inserted into the other insertion hole (11), the ball valve is in a closed state; the first spring (24) is arranged in the first sliding groove (22) and is used for pressing the plug rod (23) in the insertion hole (11); the driving assembly (4) is arranged on the connecting rod (3) and is used for driving the plug rod (23) to move into the first sliding groove (22).

2. A ball valve according to claim 1, characterised in that: The second sliding groove (32) is arranged on the connecting rod (3), and the driving assembly (4) comprises the abutting rod (41) slidably connected in the second sliding groove (32), the first matching rod (42) connected with the plug rod (23), the first communication hole (43) arranged on the ball (2) and used for communicating the first sliding groove (22) and the matching groove (21), and the avoiding groove (44) arranged on the connecting rod (3); the first spring (24) is arranged on the first matching rod (42); the first communication hole (43) is opposite to the avoiding groove (44); the first matching rod (42) passes through the first communication hole (43) and extends into the avoiding groove (44); the oblique groove (421) is arranged on one end of the first matching rod (42) extending into the avoiding groove (44); one end of the abutting rod (41) extends out of the connecting rod (3); the other end of the abutting rod (41) extends into the avoiding groove (44) and is matched with the oblique groove (421); the abutting rod (41) presses the oblique groove (421) to drive the first matching rod (42) to move into the avoiding groove (44).

3. A ball valve according to claim 2, wherein: The third sliding groove (7) is arranged on the side wall of the second sliding groove (32), and the anti-disengagement block (411) is slidably connected in the third sliding groove (7).

4. A ball valve according to claim 3, wherein: The second spring (33) is arranged in the third sliding groove (7) and is located on the side of the anti-disengagement block (411) close to the avoiding groove (44); the elastic force of the second spring (33) acts on the anti-disengagement block (411); the second spring (33) always drives the anti-disengagement block (411) to move away from the avoiding groove (44).

5. A ball valve according to claim 2, wherein: The pressing cap (34) is arranged on one end of the abutting rod (41) extending out of the connecting rod (3); the accommodating area (341) is formed in the middle of the pressing cap (34) by concave arrangement; and the plurality of anti-skid lines (342) are arranged in the accommodating area (341).

6. A ball valve according to claim 5, characterised in that: The nut (35) is threadedly connected to the connecting rod (3) and is used for pressing the valve rod (31) on the connecting rod (3); the pressing cap (34) is located on the side of the nut (35) away from the valve body (1); and the diameter of the pressing cap (34) is smaller than the inner hole diameter of the nut (35).

7. A ball valve according to claim 1, characterized in that: One end of the valve stem (31) is bent towards the valve body (1) to form a limiting part (5), the valve body (1) is provided with two limiting blocks (6), the limiting part (5) is located between the two limiting blocks (6), when the limiting part (5) rotates to abut against one limiting block (6), the first sliding slot (22) is opposite to one of the insertion holes (11); when the limiting part (5) rotates to abut against the other limiting block (6), the first sliding slot (22) is opposite to the other insertion hole (11).

Images