Diversion stop valve

Abstract

The utility model provides a flow guide stop valve, and belongs to the technical field of stop valves. Comprising a valve body, an inlet channel is formed in one side in the valve body, an outlet channel is formed in the other side in the valve body, a flow guide assembly is arranged in the inlet channel, an anti-backflow assembly is arranged in the outlet channel, the flow guide assembly comprises a first supporting disc, a spiral flow guide rod is rotationally connected to the center of one side wall of the first supporting disc, and the anti-backflow assembly comprises a second supporting disc; a hollow rod is arranged in the center of one side wall of the second supporting disc, a sliding plate is slidably connected into the hollow rod, a sliding rod penetrating through the second supporting disc is arranged on the other side wall of the sliding plate, and a baffle is arranged at the end of the sliding rod. Through the flow guide assembly, the flow rate of a medium can be increased, the good flow guide function is achieved, and the situation that the interior of the stop valve is blocked is avoided; by means of the anti-backflow assembly, the medium in the outlet channel can be effectively prevented from reversely flowing back into the inlet channel, the good anti-backflow function is achieved, and the condition of medium backflow is avoided.

Description

Technical Field

[0001] The utility model provides a flow-guiding stop valve, belonging to the technical field of stop valves. Background Art

[0002] The stop valve, also known as the gate valve, is a forced sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to force the sealing surface to prevent leakage. The stop valve, also known as the gate valve, is one of the most widely used valves. The reason why it is so popular is that the friction between the sealing surfaces during the opening and closing process is small, it is relatively durable, the opening height is not large, it is easy to manufacture and maintain, and it is not only suitable for medium and low pressures, but also for high pressures. The closing principle of the stop valve is to rely on the valve stem pressure to make the valve disc sealing surface fit closely with the valve seat sealing surface to prevent the flow of the medium.

[0003] The existing stop valve can basically meet the use needs, but when the stop valve is transmitting the medium, especially the relatively viscous liquid medium, due to the lack of a diversion component, the viscous liquid medium often flows slowly in the valve body, which may cause blockage inside the stop valve; and when factors such as external equipment failure occur, causing the medium in the valve body to flow back from the outlet channel to the inlet channel, due to the lack of an anti-backflow component, the medium will flow back. Based on this, the utility model provides a diversion stop valve. Utility Model Content

[0004] The technical problem solved by the utility model is: when transmitting a medium, especially a relatively viscous liquid medium, due to the lack of a drainage component, the viscous liquid medium often flows slowly in the valve body, which may cause blockage inside the stop valve; and when factors such as external equipment failure occur, causing the medium in the valve body to flow back from the outlet channel to the inlet channel, due to the lack of an anti-backflow component, the medium will flow back.

[0005] In order to solve the technical problem, the technical solution provided by the utility model is: a diversion stop valve, including a valve body, an inlet channel is provided on one side of the valve body, and an outlet channel is provided on the other side, the inlet channel is provided with a diversion component for diversion, and the outlet channel is provided with an anti-backflow component for preventing the backflow of the medium, the diversion component includes a support disk 1, a spiral guide rod is rotatably connected to the center of one side wall of the support disk 1, the anti-backflow component includes a support disk 2, a hollow rod is provided at the center of one side wall of the support disk 2, a slide is slidably connected to the hollow rod, a spring is provided between the inner side wall of the hollow rod and one side wall of the slide, the other side wall of the slide is provided with a sliding rod passing through the support disk 2, and the end of the sliding rod is provided with a baffle for blocking the support disk 2.

[0006] Furthermore, the spiral guide rod is arranged on a side wall of the support plate away from the outlet channel, and the spiral guide rod is provided with spiral guide vanes.

[0007] Furthermore, the support plate 1 includes an outer ring and an inner circular plate arranged at the inner center of the outer ring. The outer ring is fixedly arranged on the inner wall of the inlet channel, and the outer ring and the inner circular plate are fixedly connected by reinforcing ribs.

[0008] Furthermore, the side wall of the inner circular plate and the end of the spiral guide rod are rotatably connected via a bearing.

[0009] Furthermore, the support plate 2 has the same structure as the support plate 1, the hollow rod is arranged on a side wall of the support plate 2 close to the inlet channel, and the baffle is arranged on the other side of the support plate 2.

[0010] Furthermore, the inner side wall of the hollow rod is symmetrically provided with slide rails matching the side walls of the slide plate.

[0011] Beneficial effects of the utility model:

[0012] 1. When the medium enters the valve body from the inlet channel through the guide assembly, the spiral guide rod is connected to the side wall of the support plate in rotation. The continuously flowing medium will drive the spiral guide rod to rotate, and then drive the spiral guide vane to rotate, so as to guide the medium flow in a spiral manner, which can speed up the flow rate of the medium and has an excellent guide function to avoid blockage inside the stop valve.

[0013] 2 After the medium flows into the outlet channel, the initial state is that the baffle covers the second side wall of the support disk. Under the continuous flow of the medium, the baffle will move to the side away from the second support disk, thereby driving the slide bar and the slide plate to move to the side away from the second support disk. At this time, the spring is in a stretched state. When the medium flows back from the outlet channel to the inlet channel due to external equipment failure and other factors, the spring in the stretched state rebounds and resets, thereby driving the slide plate, the slide bar and the baffle to rebound and reset to the initial state. At this time, the baffle covers the second side wall of the support disk, which can effectively prevent the medium in the outlet channel from flowing back to the inlet channel, and has a good anti-backflow function to avoid the occurrence of medium backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a flow-guiding stop valve.

[0015] Figure 2 It is a plan view of a flow-guiding stop valve of the utility model.

[0016] Figure 3 It is a plan view of a flow guide component of a flow guide stop valve of the utility model.

[0017] Figure 4 The utility model is a schematic diagram of the structure of a flow guide component of a flow guide stop valve.

[0018] Figure 5 It is a plan view of a backflow prevention component of a flow-guiding stop valve of the utility model.

[0019] Figure 6 The utility model is a schematic diagram of the structure of a backflow prevention component of a flow-guiding stop valve.

[0020] 1. Valve body; 2. Inlet channel; 3. Outlet channel; 4. Guide assembly; 5. Anti-backflow assembly; 6. Support plate 1; 7. Spiral guide rod; 8. Support plate 2; 9. Hollow rod; 10. Slide plate; 11. Spring; 12. Slide rod; 13. Baffle; 14. Spiral guide vane; 15. Outer ring; 16. Inner circular plate; 17. Reinforcement rib; 18. Bearing; 19. Slide rail. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] According to the attached Figure 1 , 2 , 3, and 5: The utility model provides a diversion stop valve: comprising a valve body 1, an inlet channel 2 is provided on one side of the valve body 1, and an outlet channel 3 is provided on the other side, a diversion component 4 for diversion is provided in the inlet channel 2, and an anti-backflow component 5 for preventing the backflow of the medium is provided in the outlet channel 3, the diversion component 4 comprises a support plate 1 6, and a spiral diversion rod 7 is rotatably connected to the center of one side wall of the support plate 1 6, and the anti-backflow component 5 comprises a support plate 2 8, and a hollow rod 9 is provided at the center of one side wall of the support plate 2 8, and a slide plate 10 is slidably connected in the hollow rod 9, and a Spring 11, the other side wall of the slide plate 10 is provided with a slide rod 12 passing through the support disk 2 8, and the end of the slide rod 12 is provided with a baffle 13 for blocking the support disk 2 8. When the stop valve is transmitting the medium, especially the relatively viscous liquid medium, when the medium enters the valve body 1 from the inlet channel 2, since the spiral guide rod 7 is rotatably connected with the side wall of the support disk 1 6, the continuously flowing medium will drive the spiral guide rod 7 to rotate, and then drive the spiral guide vane 14 to rotate, so as to spirally guide the flow of the medium, accelerate the flow rate of the medium, and have an excellent diversion function to avoid clogging inside the stop valve.

[0023] According to the attached Figure 2 , 4 As shown: the spiral guide rod 7 is arranged on the side wall of the support plate 6 away from the outlet channel 3, and the spiral guide rod 7 is provided with a spiral guide blade 14, which plays the role of spirally guiding the flow of the medium and accelerating the flow rate of the medium.

[0024] According to the attached Figure 4As shown: the support plate 6 includes an outer ring 15 and an inner circular plate 16 arranged at the inner center of the outer ring 15. The outer ring 15 is fixedly arranged on the inner wall of the inlet channel 2. The outer ring 15 and the inner circular plate 16 are fixedly connected by reinforcing ribs 17, so that the medium can flow through the cavity between the reinforcing ribs 17.

[0025] According to the attached Figure 3 As shown: the side wall of the inner circular plate 16 and the end of the spiral guide rod 7 are rotatably connected via a bearing 18, ensuring that the spiral guide rod 7 can effectively rotate.

[0026] According to the attached Figure 2 , 4 6: The support plate 2 8 has the same structure as the support plate 1 6. The hollow rod 9 is arranged on the side wall of the support plate 2 8 close to the inlet channel 2, and the baffle 13 is arranged on the other side of the support plate 2 8 to ensure that the medium can flow through the cavity between the support plates 2 8. When not in use, the baffle 13 can cover the cavity between the support plates 2 8 to avoid backflow.

[0027] According to the attached Figure 5 As shown: the inner wall of the hollow rod 9 is symmetrically provided with a slide rail 19 that matches the side wall of the slide plate 10 and plays a role in limiting the position of the slide plate 10.

[0028] Principle of the utility model

[0029] When in use, when the stop valve is transmitting a medium, especially a relatively viscous liquid medium, the stop valve is opened so that the inlet channel 2 and the outlet channel 3 on both sides of the valve body 1 are connected. When the medium enters the valve body 1 from the inlet channel 2, since the spiral guide rod 7 is rotatably connected to the side wall of the support plate 6, the continuously flowing medium will drive the spiral guide rod 7 to rotate, and then drive the spiral guide vane 14 to rotate, so as to spirally guide the flow of the medium, accelerate the flow rate of the medium, and have an excellent diversion function to avoid blockage inside the stop valve.

[0030] After the medium flows into the outlet channel 2, the initial state is that the baffle 13 covers the side wall of the support disk 2 8. Under the continuous flow of the medium, the baffle 13 will move to the side away from the support disk 2 8, thereby driving the slide bar 12 and the slide plate 10 to move to the side away from the support disk 2 8. At this time, the spring 11 is under force and is in a stretched state. When the medium flows back from the outlet channel 3 to the inlet channel 2 due to factors such as external equipment failure, the spring 11 in the stretched state rebounds and resets, thereby driving the slide plate 10, the slide bar 12, and the baffle 13 to rebound and reset to the initial state. At this time, the baffle 13 covers the side wall of the support disk 2 8, which can effectively prevent the medium in the outlet channel 3 from flowing back to the inlet channel 2, and has a good anti-backflow function to avoid the occurrence of medium backflow.

[0031] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A flow-guiding stop valve, comprising a valve body (1), wherein one side of the valve body (1) is provided with an inlet channel (2) and the other side of the valve body (1) is provided with an outlet channel (3), characterized in that: The inlet channel (2) is provided with a flow guide component (4) for guiding flow, and the outlet channel (3) is provided with an anti-backflow component (5) for preventing backflow of the medium. The flow guide component (4) comprises a support plate (6), and a spiral flow guide rod (7) is rotatably connected to the center of one side wall of the support plate (6). The anti-backflow component (5) comprises a support plate (8), and a hollow rod (9) is provided at the center of one side wall of the support plate (8). A slide plate (10) is slidably connected inside the hollow rod (9), and a spring (11) is provided between the inner side wall of the hollow rod (9) and one side wall of the slide plate (10). The other side wall of the slide plate (10) is provided with a slide rod (12) passing through the support plate (8), and a baffle (13) for shielding the support plate (8) is provided at the end of the slide rod (12).

2. A flow-guiding stop valve according to claim 1, characterized in that: The spiral guide rod (7) is arranged on the side wall of the support plate (6) away from the outlet channel (3), and the spiral guide rod (7) is provided with a spiral guide vane (14).

3. A flow-guiding stop valve according to claim 1, characterized in that: The support plate (6) comprises an outer ring (15) and an inner circular plate (16) arranged at the inner center of the outer ring (15); the outer ring (15) is fixedly arranged on the inner wall of the inlet channel (2); and the outer ring (15) and the inner circular plate (16) are fixedly connected by reinforcing ribs (17).

4. A flow-guiding stop valve according to claim 3, characterized in that: The side wall of the inner circular plate (16) and the end of the spiral flow guide rod (7) are rotatably connected via a bearing (18).

5. The flow-guiding stop valve according to claim 1, characterized in that: The support plate 2 (8) has the same structure as the support plate 1 (6), the hollow rod (9) is arranged on a side wall of the support plate 2 (8) close to the inlet channel (2), and the baffle (13) is arranged on the other side of the support plate 2 (8).

6. A flow-guiding stop valve according to claim 1, characterized in that: The inner side wall of the hollow rod (9) is symmetrically provided with a slide rail (19) matching the side wall of the slide plate (10).

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