Flow-controllable anti-impact ball valve

Abstract

The utility model provides a flow-controllable anti-impact ball valve, which belongs to the field of valves and comprises a first anti-impact component and a second anti-impact component. The first anti-impact assembly comprises a first mounting ring and a first anti-impact ring, convex plates are arranged on the first anti-impact ring at intervals in the circumferential direction, a bearing is arranged between the first mounting ring and the circumferential side wall of the first anti-impact ring, and the first anti-impact ring can rotate relative to the first mounting ring through the bearing; the second anti-impact assembly comprises a second mounting ring, a movable groove is formed in the second mounting ring, a first elastic filler, a second anti-impact ring and a second elastic filler are arranged in the movable groove, and the second anti-impact ring is provided with a conical surface inclining towards the direction of the outlet flow channel and can slide in a reciprocating mode in the axial direction of the outlet flow channel. The two anti-impact assemblies are arranged, the impact force of media on the valve body and the valve element can be reduced, and the service life of the ball valve is prolonged; a second valve element is further arranged, and flow adjustment is achieved when the ball valve is in an open state.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve field, concretely relates to a flow controllable anti-impact ball valve. BACKGROUND

[0002] Ball valve is mainly by valve body, ball, valve seat, valve rod and operating mechanism etc. component constitutes. Ball as cut-off element is arranged in valve body, and the through hole for medium to pass through is arranged on the ball, and it drives the ball to rotate through the valve rod to realize the opening and closing of the valve. When the valve rod rotates and the through hole of the ball coincides with the axis of the flow channel in the valve body, the valve is in full open state, and the fluid can pass through the valve smoothly. When the valve rod rotates and the through hole of the ball is perpendicular to the axis of the flow channel in the valve body, the valve is completely closed, and the flow of fluid is cut off. Ball valve has the advantages of convenient operation, compact structure, good sealing performance, and is widely used in chemical industry, petroleum, ship and other fields.

[0003] However, in the working condition of high-speed fluid, fluid pressure mutation, frequent opening and closing, the fluid medium will produce a large impact force on the ball valve when passing through the ball valve, which is easy to cause damage to the ball valve cavity, and reduces the service life of the ball valve. Therefore, it is of great significance to design a ball valve with good anti-impact effect. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the shortcomings and deficiencies of prior art, and provides a flow controllable anti-impact ball valve.

[0005] The utility model adopts the technical scheme as follows: a flow controllable anti-impact ball valve, including valve body, the inlet flow channel and outlet flow channel are arranged in the valve body, still including first anti-impact subassembly and second anti-impact subassembly, and being arranged in the inlet flow channel and outlet flow channel respectively, first anti-impact subassembly includes first mounting ring and first anti-impact ring, first anti-impact ring is spaced apart and is provided with the convex plate along the circumference, bearing is arranged between the circumferential sidewall of first mounting ring and first anti-impact ring, and first anti-impact ring can rotate relative to first mounting ring through bearing, second anti-impact subassembly includes second mounting ring, the movable slot is arranged on the second mounting ring, first elastic packing, second anti-impact ring and second elastic packing are sequentially arranged in the movable slot, the taper surface that second anti-impact ring is provided with is inclined to the direction of outlet flow channel, and second anti-impact ring can extrude first elastic packing, second elastic packing and generate reciprocating sliding along the axis of outlet flow channel.

[0006] The convex plate and first anti-impact ring are misaligned in the diameter direction, and the thickness of the convex plate gradually increases along the inlet flow channel direction.

[0007] The first limiting plate is arranged on the second anti-impact ring corresponding to the first elastic packing, and the second limiting plate is arranged corresponding to the second elastic packing.

[0008] The first valve core is internally provided with a first through hole, and a first valve rod is connected to the upper end of the first valve core.

[0009] The flow-controllable anti-impact ball valve further comprises a second valve rod coaxial with the first valve rod, a second valve core is arranged in the first through hole, the outer wall of the second valve core abuts against the inner wall of the first valve core, the second valve rod passes through the first valve core and is connected with the second valve core, and the second valve rod is used to drive the second valve core to rotate to adjust the flow.

[0010] The second valve core is provided with a second through hole.

[0011] The valve body is internally provided with a first valve seat, and the first valve seat abuts against the first valve core to form a first sealing part.

[0012] The first valve seat is provided with a second valve seat, the first valve seat is threadedly matched with the second valve seat, and the second valve seat abuts against the first valve core to form a second sealing part.

[0013] The upper end of the valve body is provided with a valve cover, and a first sealing ring is arranged between the valve cover and the first valve rod.

[0014] A second sealing ring is arranged between the second valve rod and the valve body.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The first anti-impact assembly and the second anti-impact assembly are arranged in the present application, the impact force of the medium on the valve body and the valve core is reduced, and the service life of the ball valve is improved.

[0017] 2. Two valve cores are arranged in the present application, one of which realizes the opening and closing of the ball valve, and the other realizes the adjustment of the flow under the open state of the ball valve.

[0018] 3. Two valve seats are arranged in the present application, double sealing is formed between the valve seat and the valve core, the sealing performance is improved, even if one layer of sealing fails, the other layer of sealing can still play a role, and the continuous use of the ball valve is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings obtained according to these drawings without creative labor still belong to the scope of the present application.

[0020] Figure 1 The present application is a schematic diagram;

[0021] Figure 2 Schematic diagram of the first anti-impact assembly of the utility model Figure One ;

[0022] Figure 3 Schematic diagram of the second anti-impact assembly of the utility model Figure One ;

[0023] Figure 4 Schematic diagram of the first anti-impact assembly of the utility model Figure Two ;

[0024] Figure 5 Schematic diagram of the second anti-impact assembly of the utility model Figure Two . DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in further detail below in combination with the drawings.

[0026] It should be noted that all the expressions of "first" and "second" in the embodiments of the utility model are used to distinguish two same name non-same entities or non-same parameters, and it can be seen that "first" and "second" are only for the convenience of expression and should not be understood as the limitation of the embodiments of the utility model, and the subsequent embodiments will not be described one by one.

[0027] The directions and positions mentioned in the utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side" and the like, are only the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the utility model, and are not limited to the protection scope of the utility model.

[0028] Embodiment one:

[0029] As shown in Figures 1 to 5 , an embodiment provided by the utility model:

[0030] A flow controllable anti-impact ball valve, comprising a valve body 1, a first valve core 4 is arranged in the valve body 1, an inlet flow channel 101 and an outlet flow channel 102 are arranged in the valve body 1, a first through hole 41 is arranged in the first valve core 4, a first valve rod 5 is connected to the upper end of the first valve core 4, and the first valve rod 5 drives the first valve core 4 to rotate to realize the opening and closing of the ball valve. A valve cover 8 is arranged at the upper end of the valve body 1, and a first sealing ring 9 is arranged between the valve cover 8 and the first valve rod 5.

[0031] The flow-controllable anti-impact ball valve further comprises a second valve rod 6 coaxial with the first valve rod 5, a second valve core 42 is arranged in the first through hole 41, the outer wall of the second valve core 42 abuts against the inner wall of the first valve core 4, and the second valve rod 6 passes through the first valve core 4 and is connected with the second valve core 42. The second valve core 42 is provided with a second through hole 421. When the first valve core 4 is rotated by the first valve rod 5 to make the first through hole 41 communicate with the inlet flow channel 101 and the outlet flow channel 102, the ball valve is in an open state, the second valve core 42 is rotated by the second valve rod 6, and the flow can be adjusted by changing the angle of the second valve core 42, especially when the outer wall of the second valve core 42 completely abuts against the inner wall of the first valve core 4, the medium can only flow through the second through hole 421, and at this time, the ball valve is in a minimum flow state; when the first valve core 4 is rotated by the first valve rod 5 to make the direction of the first through hole 41 perpendicular to the direction of the inlet flow channel 101 and the outlet flow channel 102, the ball valve is in a closed state, at this time, the second valve core 42 does not work, and the angle thereof does not affect the closing of the ball valve. The second valve rod 6 is provided with a second sealing ring 10 between the valve body 1.

[0032] The valve body 1 is provided with a first valve seat 7, the first valve seat 7 abuts against the first valve core 4 to form a first sealing part. The first valve seat 7 is provided with a second valve seat 71, the first valve seat 7 is threadedly matched with the second valve seat 71, the second valve seat 71 abuts against the first valve core 4 to form a second sealing part. Double sealing, i.e. the first sealing part and the second sealing part, is arranged to improve the sealing performance of the ball valve, and even if one of the sealing parts fails, the use of the ball valve is not affected.

[0033] In order to improve the impact resistance of the ball valve, the flow controllable anti-impact ball valve further comprises a first anti-impact assembly 2 and a second anti-impact assembly 3, which are arranged in the inlet flow channel 101 and the outlet flow channel 102, respectively. The first anti-impact assembly 2 comprises a first mounting ring 21 and a first anti-impact ring 22, the first anti-impact ring 22 is provided with a lug 221 at intervals in the circumferential direction, a bearing 23 is arranged between the circumferential side wall of the first mounting ring 21 and the first anti-impact ring 22, and the first anti-impact ring 22 can rotate relative to the first mounting ring 21 through the bearing 23; the lug 221 is arranged in a staggered manner in the diameter direction of the first anti-impact ring 22, and the thickness of the lug 221 gradually increases in the direction of the flow channel 11. When the medium enters the ball valve, an impact force is generated on the lug 221, which drives the first anti-impact ring 22 to rotate, a part of the medium impact energy is consumed, and the medium is converted into a vortex form, reducing the impact damage of the medium to the valve body and the valve core. The second anti-impact assembly 3 comprises a second mounting ring 31, the second mounting ring 31 is provided with a movable groove 311, the movable groove 311 is sequentially provided with a first elastic packing 33, a second anti-impact ring 32 and a second elastic packing 34, the second anti-impact ring 32 is provided with a tapered surface 321 inclined to the outlet flow channel 102, when the medium flows out of the valve core, a certain impact force is generated on the tapered surface 321, so that the second anti-impact ring 32 extrudes the first elastic packing 33 and the second elastic packing 34 to reciprocate along the axial direction of the outlet flow channel 102, the impact energy of the medium is consumed, and the impact damage of the medium to the valve body and the valve core is reduced.

[0034] The second anti-impact ring 32 is provided with a first limiting plate 322 corresponding to the first elastic packing 33 and a second limiting plate 323 corresponding to the second elastic packing 34, which seal and protect the first elastic packing 33 and the second elastic packing 34 from falling out.

[0035] The above only discloses the preferred embodiments of the present application, of course, cannot limit the scope of the present application, therefore, the equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A flow controllable anti-shock ball valve, comprising a valve body (1), wherein an inlet flow channel (101) and an outlet flow channel (102) are provided in the valve body (1), characterized in that: The invention also includes a first anti-impact component (2) and a second anti-impact component (3), which are respectively arranged in the inlet flow channel (101) and the outlet flow channel (102); the first anti-impact component (2) includes a first mounting ring (21) and a first anti-impact ring (22); the inner ring of the first anti-impact ring (22) is provided with convex plates (221) at intervals along the circumferential direction; a bearing (23) is provided between the first mounting ring (21) and the circumferential side wall of the first anti-impact ring (22); and the first anti-impact ring (22) can rotate relative to the first mounting ring (21) through the bearing (23); The second anti-impact component (3) comprises a second mounting ring (31), the second mounting ring (31) is provided with a movable groove (311), a first elastic filler (33), a second anti-impact ring (32) and a second elastic filler (34) are sequentially arranged in the movable groove (311), the second anti-impact ring (32) is provided with a conical surface (321) inclined in the direction of the outlet flow channel (102), and the second anti-impact ring (32) can squeeze the first elastic filler (33) and the second elastic filler (34) to cause reciprocating sliding along the axial direction of the outlet flow channel (102).

2. A flow controllable anti-shock ball valve according to claim 1, characterized in that: The convex plate (221) is staggered with respect to the diameter direction of the first anti-impact ring (22), and the thickness of the convex plate (221) gradually increases along the direction of the outlet flow channel (11).

3. The flow controllable anti-shock ball valve according to claim 1, characterized in that: The second anti-shock ring (32) is provided with a first limiting plate (322) corresponding to the first elastic filler (33), and a second limiting plate (323) corresponding to the second elastic filler (34).

4. The flow controllable anti-shock ball valve according to claim 1, characterized in that: A first valve core (4) is provided in the valve body (1), a first through hole (41) is provided in the first valve core (4), and a first valve stem (5) is connected to the upper end of the first valve core (4).

5. The flow controllable anti-shock ball valve according to claim 4, characterized in that: The invention also includes a second valve stem (6) coaxial with the first valve stem (5), a second valve core (42) is provided in the first through hole (41), the outer wall of the second valve core (42) is in contact with the inner wall of the first valve core (4), and the second valve stem (6) passes through the first valve core (4) and is connected to the second valve core (42) to drive the second valve core (42) to rotate to adjust the flow rate.

6. The flow controllable anti-shock ball valve according to claim 5, characterized in that: The second valve core (42) is provided with a second through hole (421).

7. The flow controllable anti-shock ball valve according to claim 4, characterized in that: A first valve seat (7) is provided in the valve body (1), and the first valve seat (7) abuts against the first valve core (4) to form a first sealing portion.

8. The flow controllable anti-shock ball valve according to claim 7, characterized in that: A second valve seat (71) is provided on the first valve seat (7); the first valve seat (7) and the second valve seat (71) are threadedly matched; the second valve seat (71) abuts against the first valve core (4) to form a second sealing portion.

9. The flow controllable anti-shock ball valve according to claim 4, characterized in that: A valve cover (8) is provided at the upper end of the valve body (1), and a first sealing ring (9) is provided between the valve cover (8) and the first valve stem (5).

10. The flow controllable anti-shock ball valve according to claim 5, characterized in that: A second sealing ring (10) is provided between the second valve stem (6) and the valve body (1).

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