Stainless steel clamping and pressing type zero-backflow spherical control valve

Abstract

The utility model discloses a stainless steel clamping type zero backflow ball type control valve which comprises a pipe body and a first valve body arranged on the pipe body, a water inlet portion and a water outlet portion are arranged at the two ends of the first valve body respectively, a ball valve assembly is arranged in the first valve body and comprises a ball valve element, and the ball valve element is connected with the first valve body. A communicating groove communicated with the pipe body is formed in the ball valve element, and a movable handle is arranged on the first valve body. A backflow control valve assembly is further arranged on one side of the water outlet part and comprises a second valve body, a second valve element is arranged in the second valve body, a water retaining part is arranged on the second valve element, an inner inclined plane part is arranged on the water retaining part, an outer inclined plane part is arranged on the second valve body, and a water outlet is formed in the outer inclined plane part. And a control flow channel is formed between the inner inclined surface part and the outer inclined surface part. Water flow is effectively guided to the two sides, the size of the flow channel can be automatically adjusted and controlled, the pressure is prevented from being too large, and the stability of the structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field, especially a kind of stainless steel clamping pressure type zero backflow ball control valve. BACKGROUND

[0002] Zero backflow ball control valve is a kind of ball valve with high sealing performance, can realize completely no backflow when closing, ensure fluid unidirectional flow, widely used in high-precision fluid control system.Its ball structure flow resistance is small, opens and closes quickly, is suitable for high pressure, high temperature or corrosive medium environment, commonly used in chemical industry, petroleum, pharmaceutical industry etc.

[0003] The existing zero backflow ball control valve usually adopts baffle and spring structure, when baffle is impacted by strong water flow, rebound or vibration phenomenon can occur, leading to the opening of flow passage to occur instantaneous fluctuation, leading to unstable water flow, after long time use, structure can be damaged, affect the normal operation of valve, also increase the cost of maintenance and replacement. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a kind of stainless steel clamping pressure type zero backflow ball control valve, effectively water flow is guided to both sides, and the size of flow passage can be automatically adjusted and controlled, prevent excessive pressure, improve the stability of structure.

[0005] To solve the above technical problem, a kind of stainless steel clamping pressure type zero backflow ball control valve of the utility model, including pipe body and the first valve body being set on the pipe body, the first valve body two ends are respectively equipped with water inlet portion and water outlet portion, the first valve body is equipped with ball valve assembly, the ball valve assembly includes ball valve spool, the ball valve spool is equipped with the through groove being communicated with pipe body, the first valve body is equipped with movable handle, by rotating movable handle to drive spherical valve core to open and close;The water outlet portion side is also equipped with backflow control valve assembly, the backflow control valve assembly includes second valve body, the second valve body is equipped with second valve core, the second valve core is equipped with water baffle portion, the water baffle portion is equipped with inner inclined surface portion, the second valve body is equipped with outer inclined surface portion, control flow passage is formed between the inner inclined surface portion and outer inclined surface portion, the second valve core moves in second valve body to adjust control flow passage size.

[0006] The second valve body includes guide and sealing element, the first valve body is equipped with fixed baffle ring, the sealing element is arranged between the guide and fixed baffle ring.

[0007] Sealing protrusion is equipped on the sealing element, the water baffle portion can be abutted on the sealing protrusion, sealing ring is equipped on the sealing protrusion side.

[0008] The guide piece is provided with an insertion sheet which has a tendency to expand outward, and the pipe body is provided with an insertion slot in which the insertion sheet is inserted.

[0009] The guide piece is provided with a guide pipe in which a guide slot is arranged, the water blocking part is connected with a movable rod which is arranged in the guide slot, and a reset spring is arranged on the guide pipe.

[0010] The guide piece is provided with a water guide plate which is in the shape of an umbrella and is connected with the guide pipe through a connecting plate.

[0011] The bottom of the movable handle is fixedly connected with the ball valve core through a movable shaft, the ball valve core is provided with a clamping slot, and the movable shaft is provided with a protrusion which is clamped in the clamping slot.

[0012] The valve body is provided with a limiting stopper, the end of the movable handle is provided with a first limiting rod, and the side of the movable handle is provided with a second limiting rod.

[0013] The pipe body is provided with a shunt interface, and the shunt interface is provided with a plug.

[0014] The connecting plate is provided with a plurality of through holes, a guide support is fixedly arranged on one side of the connecting plate, and a baffle is slidably arranged on the guide support and can abut against the connecting plate.

[0015] When the valve is in an open state, water flows into the first valve body from the water inlet part and flows to the water outlet part through the through groove of the ball valve core, the user can adjust the opening and closing of the ball valve core by rotating the movable handle to control the on-off of the water flow, when the water flow impacts the water blocking part, the second valve core will be pushed to the outside due to the pressure of the water flow, so that the control flow passage gradually increases, the water flow increases, when the water flow impact force is small, the second valve core will reset due to the structure and the reset spring, so that the control flow passage is reduced, thereby reducing the water flow. When the pressure fluctuation occurs in the pipeline system or the external pressure is greater than the internal pressure, the water flow with the backflow tendency will try to flow back to the first valve body. However, due to the existence of the backflow control valve assembly, the backflow water flow will push the second valve core to move to the reset direction, so that the control flow passage is quickly reduced until completely closed, thereby effectively preventing the water flow from flowing back.

[0016] The utility model brings the beneficial effect that:

[0017] When the water flow has a backflow tendency, the second valve core will move, so that the control flow passage is reduced until closed, thereby effectively preventing the water flow from flowing back and ensuring the stability and safety of the pipeline system.

[0018] The inner inclined surface effectively guides the water flow to the two sides, reduces the force directly impacting on the valve core, the second valve core can automatically adjust the size of the flow channel, prevents the pressure from being too large, and improves the stability of the structure.

[0019] The utility model discloses a plurality of through holes are equipped on the connecting plate, ensure that the accumulated water is discharged in time, prevent the pressure between the umbrella-shaped water guide plate and the pipe from being too large, improve the service life of the valve. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structure schematic diagram of the utility model.

[0021] Figure 2 It is the sectional view of the utility model.

[0022] Figure 3 It is the structure schematic diagram of the utility model movable shaft.

[0023] Figure 4 It is the structure schematic diagram of the utility model movable shaft.

[0024] Figure 5 It is the structure schematic diagram of the utility model guide.

[0025] Figure 6 It is the sectional view of the utility model pipe body and first valve body.

[0026] Figure 7 It is the sectional view of the utility model guide.

[0027] Figure 8 It is the structure schematic diagram of the utility model sealing element.

[0028] In the drawing: 1, pipe body;2, first valve body;3, ball valve assembly;4, ball valve core;5, lead-through groove;6, movable handle;7, plug;8, second valve body;9, second valve core;10, water retaining portion;11, inner inclined surface portion;12, outer inclined surface portion;13, control flow channel;14, guide;15, sealing element;16, fixed retaining ring;17, sealing protrusion;18, sealing ring;19, insert sheet;20, insert groove;21, pipe;22, guide groove;23, movable rod;24, return spring;25, water guide plate;26, connecting plate;27, movable shaft;28, lug;29, clamping groove;30, limit stopper;31, first limit rod;32, second limit rod;33, shunt interface;34, through hole;35, guide support;36, baffle. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and all other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative labor fall within the scope of the present application.

[0030] According to Figures 1 to 8 As shown in the figure, the utility model relates to a kind of stainless steel clamping pressure type zero reflux ball control valve, including pipe body 1 and the first valve body 2 being set on pipe body 1, the water inlet and outlet of two ends of first valve body 2 are respectively equipped, and the ball valve assembly 3 is equipped in first valve body 2, and the ball valve assembly 3 includes ball valve spool 4, and the through groove 5 being communicated with pipe body 1 is equipped in ball valve spool 4, so that water flow can be smoothly circulated in opening state. First valve body 2 is equipped with movable handle 6, and user can drive ball valve spool 4 by rotating movable handle 6, to realize the opening and closing of waterway.

[0031] The side of water outlet is equipped with reflux control valve assembly, and the assembly includes second valve body 8, and the second valve core 9 is equipped in second valve body 8, and the water baffle 10 is equipped on second valve core 9, and the inner inclined surface part 11 is equipped on the surface of water baffle 10, and control flow channel 13 is formed by cooperating with the outer inclined surface part 12 being arranged on second valve body 8. By controlling the movement of second valve core 9 in second valve body 8, the size of control flow channel 13 can be adjusted, when water flow impacts water baffle 10, the impact force of water flow drives second valve core 9 to move inwards, so that control flow channel 13 gradually becomes larger, so that the water flow passing through is also gradually increased. Second valve body 8 is composed of guide 14 and sealing element 15, and first valve body 2 is equipped with fixed baffle ring 16, and sealing element 15 is installed between guide 14 and fixed baffle ring 16, to provide good sealing effect. Sealing protrusion 17 is equipped on sealing element 15, and water baffle 10 can be tightly abutted on sealing protrusion 17, and the side of sealing protrusion 17 is also equipped with sealing ring 18, to further enhance sealing performance, to prevent medium reflux.

[0032] The guide piece 14 is provided with an insertion sheet 19 which has a tendency to expand outward, and the pipe body 1 is correspondingly provided with an insertion slot 20, the insertion sheet 19 is inserted into the insertion slot 20, so that the guide piece 14 can be stably installed and maintain good guiding function. In addition, the guide piece 14 is provided with a guide pipe 21, the guide pipe 21 is provided with a guide groove 22 inside, the water retaining part 10 is connected with a movable rod 23, the movable rod 23 is cross-shaped in section, the movable rod 23 is arranged in the guide groove 22, and a reset spring 24 is arranged outside the guide pipe 21, so that the water retaining part 10 can be automatically reset under the action of the spring, and the stable adjustment of the control flow channel 13 is ensured. The end of the guide piece 14 away from the second valve core 9 is also provided with an umbrella-shaped water guide plate 25, the water guide plate 25 is connected with the guide pipe 21 through a connecting plate 26, when the water flow backflows, the umbrella-shaped water guide plate 25 guides the water flow to the inner wall of the second valve body 8, and the outer inclined surface then guides the water flow to the water retaining part 10, and the water retaining part 10 drives the entire second valve core 9 to move to the sealing protrusion 17.

[0033] The utility model discloses still optimized the control structure of ball valve assembly 3, the bottom of movable handle 6 is fixedly connected with ball valve core 4 through movable shaft 27, is equipped with the clamping groove 29 on ball valve core 4, is equipped with lug 28 on movable shaft 27, and the lug 28 is clamped in clamping groove 29, so that movable handle 6 can stably drive ball valve core 4 when rotating. At the same time, the valve body is provided with a limit stopper 30, the end of the movable handle 6 is provided with a first limit rod 31, and the movable handle 6 is also provided with a second limit rod 32 on one side. Through the action of the limit rod, the rotation angle of the movable handle 6 can be effectively controlled.

[0034] In order to improve the flexibility of application, the pipe body 1 is provided with a shunt interface 33, the shunt interface 33 is provided with a plug 7, and the plug 7 can be removed to connect other devices according to the use requirement.

[0035] In addition, due to the existence of the umbrella-shaped water guide plate 25, a water accumulation area is formed between the umbrella-shaped water guide plate 25 and the guide pipe 21, which can cause the guide piece 14 to bear a large pressure. Therefore, a plurality of through holes 34 are arranged on the connecting plate 26, and the water flow can be discharged from the through holes 34. A guide bracket 35 is fixedly installed on one side of the connecting plate 26, and a baffle 36 is slidably arranged on the guide bracket 35. The baffle 36 can abut against the connecting plate 26. When the water flow backflows, the baffle 36 moves towards the connecting plate 26, so that the through holes 34 are closed.

[0036] The utility model discloses when using, when the valve is in the open state, water current enters first valve body 2 from the water inlet part, and through the through -going slot 5 of ball valve spool 4 flow to the water outlet part, and the user can adjust the opening and closing of ball valve spool 4 through rotating movable handle 6, to control the on -off of water current, when water current impact water retaining portion 10, because of the pressure of water current, second valve core 9 will be pushed to the outside, result in control flow passage 13 gradually become big, make the water flow that passes increase, when the water current impact force is small, second valve core 9 will reset due to its structure and the effect of reset spring 24, make control flow passage 13 narrow, thereby reduce water flow. When pressure fluctuation appears in the pipeline system or external pressure is greater than internal pressure, the water current of backflow tendency will attempt to flow back to first valve body 2. But because of the existence of backflow control valve assembly, the water current of backflow will push second valve core 9 to move to the reset direction, make control flow passage 13 narrow rapidly until completely close, thereby effectively prevent water current from flowing back.

[0037] The utility model discloses the beneficial effect that is:

[0038] When water current has backflow tendency, second valve core will move, make control flow passage narrow until close, thereby effectively prevent water current from flowing back, ensure the stability and security of pipeline system.

[0039] Through water current impact water retaining portion, second valve core can automatically adjust the size of control flow passage, prevent excessive pressure, improve the stability of structure.

[0040] The utility model discloses connecting plate is equipped with a plurality of through -hole, ensure that the accumulated water is discharged in time, prevent the pressure between umbrella -shaped water guide plate and guide pipe from being too big, improve the service life of valve.

[0041] The above only is the preferred implementation of the utility model, therefore, the equivalent change or modification of the structure, feature and principle that is done according to the patent application range of the utility model, all are included in the patent application range of the utility model.

Claims

1. A stainless steel clamp type zero-reflux ball valve, comprising a pipe body (1) and a first valve body (2) arranged on the pipe body (1), the first valve body (2) being provided with a water inlet portion and a water outlet portion at two ends respectively, and a ball valve assembly (3) being arranged in the first valve body (2), characterized in that: The ball valve assembly (3) comprises a ball valve spool (4) provided with a through groove (5) in communication with the pipe body (1), and a movable handle (6) is arranged on the first valve body (2), and the ball valve spool is driven to open and close by rotating the movable handle (6); a backflow control valve assembly is further arranged on one side of the water outlet portion, and the backflow control valve assembly comprises a second valve body (8) provided with a second valve core (9), a water blocking portion (10) is arranged on the second valve core (9), an inner inclined surface portion (11) is arranged on the water blocking portion (10), an outer inclined surface portion (12) is arranged on the second valve body (8), and a control flow channel (13) is formed between the inner inclined surface portion (11) and the outer inclined surface portion (12); and the second valve core (9) moves in the second valve body (8) to adjust the size of the control flow channel (13).

2. A stainless steel pinch type zero relief globe valve according to claim 1, characterized in that: The second valve body (8) comprises a guide piece (14) and a sealing piece (15), and a fixed blocking ring (16) is arranged on the first valve body (2), and the sealing piece (15) is arranged between the guide piece (14) and the fixed blocking ring (16).

3. The stainless steel pinch zero bleed globe valve of claim 2, wherein: A sealing protrusion (17) is arranged on the sealing piece (15), the water blocking portion (10) can abut against the sealing protrusion (17), and a sealing ring (18) is arranged on one side of the sealing protrusion (17).

4. The stainless steel pinch zero bleed globe valve of claim 2, wherein: An insertion sheet (19) is arranged on the guide piece (14), the insertion sheet (19) has a tendency to expand outward, an insertion groove (20) is arranged in the pipe body (1), and the insertion sheet (19) is inserted into the insertion groove (20).

5. The stainless steel pinch zero bleed globe valve of claim 2, wherein: A guide pipe (21) is arranged on the guide piece (14), a guide groove (22) is arranged in the guide pipe (21), a movable rod (23) is connected to the water blocking portion (10), the movable rod (23) is arranged in the guide groove (22), and a reset spring (24) is sleeved on the guide pipe (21).

6. A stainless steel pinch type zero relief globe valve according to claim 2, wherein: A water guide plate (25) is arranged at an end of the guide piece (14) away from the second valve core (9), the water guide plate (25) is umbrella-shaped, and the water guide plate (25) is connected to the guide pipe (21) through a connecting plate (26).

7. The stainless steel pinch zero bleed globe valve of claim 1, wherein: A bottom of the movable handle (6) is fixedly connected to the ball valve spool (4) through a movable shaft (27), a clamping groove (29) is arranged on the ball valve spool (4), a protruding block (28) is arranged on the movable shaft (27), and the protruding block (28) is clamped in the clamping groove (29).

8. The stainless steel pinch zero bleed globe valve of claim 1, wherein: A limiting block (30) is arranged on the valve body, a first limiting rod (31) is arranged at an end of the movable handle (6), and a second limiting rod (32) is arranged on one side of the movable handle (6).

9. The stainless steel pinch zero bleed globe valve of claim 1, wherein: A shunt interface (33) is arranged on the pipe body (1), and a plug (7) is mounted on the shunt interface (33).

10. The stainless steel pinch zero bleed globe valve of claim 6, wherein: A plurality of through holes (34) are arranged on the connecting plate (26), a guide support (35) is fixedly arranged on one side of the connecting plate (26), a baffle (36) is slidably arranged on the guide support (35), and the baffle (36) can abut against the connecting plate (26).

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