Double-safety stop valve

Abstract

The utility model relates to the technical field of stop valves, and discloses a double-safety stop valve which comprises a connecting pipe, the top of the connecting pipe is connected with a mounting seat, the interior of the mounting seat is in threaded connection with a threaded rod, the top of the threaded rod is connected with a rotating disc, and the bottom of the threaded rod is connected with a sealing column. A water storage bin is connected to the inner bottom wall of the connecting pipe, a first sealing opening is formed in the top of the water storage bin, a first sealing strip is connected to the outer wall of the first sealing opening, a water outlet is formed in the bottom of the water storage bin, and a water outlet mechanism is arranged at the bottom of the water outlet. According to the stop valve, the sealing column moves downwards by rotating the rotating disc and sequentially penetrates through the first sealing opening and the second sealing opening, the first sealing opening can conduct first-time partition on water flow and conduct second-time cut-off on the water storage bin, the stop valve can conduct two-time cut-off on the water flow, and therefore complete sealing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of globe valves, in particular to a double - insurance globe valve. Background Art

[0002] Valves play an indispensable role in industrial fluid control. In daily use, they control the flow and stop of fluids, ensuring the stable operation of the entire system. In industries such as petrochemical, power, and water treatment, valves are of crucial importance.

[0003] A globe valve is a commonly used valve, which consists of a valve body, a valve flap, and a valve stem. By operating the mechanism to control the movement of the valve stem, the valve flap is driven to open or close, which can effectively cut off or regulate the fluid flow. It is widely used in the fields of petrochemical and power energy, and has good sealing performance, playing a key role under various working conditions.

[0004] At the present stage, the globe valve can quickly control the flow and stop of fluids. During use, the globe valve drives the valve flap to open and close through the movement of the valve stem, and can be used normally. However, since the valve flap has only single - layer protection, it is prone to leakage under the action of adverse outdoor conditions. Therefore, a double - insurance globe valve is proposed to solve the above problems. Summary of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a double - insurance globe valve, aiming to improve the problem that the valve in the existing globe valve has only a single layer and will have a small amount of leakage after long - term use under harsh conditions.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: A double - insurance globe valve includes a connecting pipe. The top of the connecting pipe is connected with a mounting seat. The inside of the mounting seat is threadedly connected with a threaded rod. The top of the threaded rod is connected with a turntable. The bottom of the threaded rod is connected with a sealing column. The inner bottom wall of the connecting pipe is connected with a water storage chamber. The top of the water storage chamber is provided with a first sealing opening. The outer wall of the first sealing opening is connected with a first sealing strip. The bottom of the water storage chamber is provided with a second sealing opening. The outer wall of the second sealing opening is connected with a second sealing strip. The bottom of the water storage chamber is provided with a water outlet. The bottom of the water outlet is provided with a water outlet mechanism, and the water outlet mechanism is used for draining the water storage chamber.

[0007] As a further description of the above technical solution:

[0008] The water outlet mechanism includes two fixed rods. The bottom ends of the two fixed rods are both connected to the inner bottom wall of the connecting pipe. The outer walls of the two fixed rods are both connected with limit posts. The left ends of the two limit posts are both connected with springs. One ends of the two springs are both connected with a moving part. The moving part is slidably connected to the outer walls of the two fixed rods. A moving column penetrates through the inside of the moving part. The left end of the moving column is connected with a pressing block. The outer wall of the moving column is connected with a connecting column. The top end of the connecting column is connected with a sealing plate.

[0009] As a further description of the above technical solution:

[0010] The top of the turntable is connected with a rotation direction indicator, and the outer wall of the turntable is provided with anti-slip lines.

[0011] As a further description of the above technical solution:

[0012] Both the left and right sides of the connecting pipe are connected with flanges, and the inside of the two flanges is provided with first screw holes.

[0013] As a further description of the above technical solution:

[0014] Both the left and right sides of the connecting pipe are provided with mounting holes, and filter nets are slidably connected to both the left and right sides of the connecting pipe.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the connecting pipe is connected with a support plate, and the top of the support plate is connected with a flow detection meter.

[0017] As a further description of the above technical solution:

[0018] The top of the mounting seat is connected with a support frame, and the top of the support frame is connected with a hexagonal nut.

[0019] As a further description of the above technical solution:

[0020] The inside of the mounting seat is provided with a second screw hole, and a bolt is threadedly connected to the inside of the mounting seat.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by rotating the turntable, the threaded rod moves downward, and the sealing column moves downward, sequentially passing through the first sealing port and the second sealing port. The first sealing port can cut off the water flow for the first time. When a small amount of water flow passes through the first sealing port and enters the water storage bin, due to the action of gravity, it will flow to the bottom of the water storage bin, so that that part of the water is intercepted in the water storage bin, and the intercepting valve can cut off the water flow twice, thereby achieving complete sealing.

[0023] 2. In the present utility model, rotate the turntable to move the threaded rod upward, so that the bottom of the sealing column leaves the second sealing port, thereby causing the extrusion block to move leftward under the action of the spring. The moving member slides on the fixed rod, driving the moving column to move leftward, and thus causing the sealing plate to move leftward. At this time, the water in the water storage chamber can flow out through the water outlet. Thus, the purpose of making the water in the water storage chamber flow out is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a perspective view of a double - insurance stop valve proposed by the present utility model;

[0025] Figure 2 is a front view of a double - insurance stop valve proposed by the present utility model;

[0026] Figure 3 is a partial - structure side top view of a double - insurance stop valve proposed by the present utility model;

[0027] Figure 4 is a partial - structure side bottom view of a double - insurance stop valve proposed by the present utility model;

[0028] Figure 5 is a perspective view of the water - discharging mechanism at position A of a double - insurance stop valve proposed by the present utility model.

[0029] LEGEND DESCRIPTION:

[0030] 1. Connecting pipe; 2. Mounting seat; 3. Threaded rod; 4. Turntable; 5. Sealing column; 6. Water storage chamber; 7. First sealing port; 8. Second sealing port; 9. First sealing strip; 10. Second sealing strip; 11. Water outlet; 12. Water - discharging mechanism; 1201. Fixed rod; 1202. Limit column; 1203. Spring; 1204. Moving member; 1205. Moving column; 1206. Extrusion block; 1207. Connecting column; 1208. Sealing plate; 13. Rotation - direction indicator; 14. Anti - slip pattern; 15. Flange; 16. First screw hole; 17. Mounting hole; 18. Filter screen; 19. Support plate; 20. Flow - detection meter; 21. Support frame; 22. Hexagonal nut; 23. Second screw hole; 24. Bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer toFigure 1 , Figure 2 and Figure 3 , an embodiment provided by the present utility model: a double - insurance stop valve, comprising a connecting pipe 1. The top of the connecting pipe 1 is connected with a mounting seat 2. The top of the mounting seat 2 is connected with a support frame 21. The top of the support frame 21 is connected with a hexagonal nut 22. A second screw hole 23 is opened inside the mounting seat 2. A bolt 24 is threadedly connected inside the mounting seat 2. A threaded rod 3 is threadedly connected inside the mounting seat 2. The top of the threaded rod 3 is connected with a turntable 4. The top of the turntable 4 is connected with a rotation direction indicator 13. Anti - slip lines 14 are provided on the outer wall of the turntable 4. The bottom of the threaded rod 3 is connected with a sealing column 5. The inner bottom wall of the connecting pipe 1 is connected with a water storage chamber 6. A first sealing port 7 is opened at the top of the water storage chamber 6. A first sealing strip 9 is connected to the outer wall of the first sealing port 7. A second sealing port 8 is opened at the bottom of the water storage chamber 6. A second sealing strip 10 is connected to the outer wall of the second sealing port 8. A water outlet 11 is opened at the bottom of the water storage chamber 6. A water outlet mechanism 12 is provided at the bottom of the water outlet 11. The water outlet mechanism 12 is used for draining the water storage chamber 6.

[0033] Specifically, when it is necessary to close the valve during actual operation, observe the rotation direction indicator 13 and rotate the turntable 4 in the direction indicated by the rotation direction indicator 13. As the turntable 4 rotates, the threaded rod 3 connected thereto will start to move downward along a specific direction. When the threaded rod 3 moves downward, it will drive the sealing column 5 to move downward synchronously. During the downward movement of the sealing column 5, it will sequentially pass through the first sealing port 7 and the second sealing port 8. A first sealing strip 9 is installed on the first sealing port 7, and a second sealing strip 10 is installed on the second sealing port 8. They can closely fit at the junction where the sealing column 5 is slidably connected to the water storage chamber 6 to effectively seal this part. When water flows into the valve from the water inlet, the first sealing port 7 will take the lead in playing a role and cut off the water flow for the first time. Even if a small amount of water breaks through the blockage of the first sealing port 7 and enters the water storage chamber 6, due to the action of gravity, this part of the water will naturally flow to the bottom of the water storage chamber 6, and this small amount of water will be intercepted in the water storage chamber 6. The water flowing downward along the sealing column 5 will be effectively intercepted by the second sealing strip 10, so that the intercepting valve can cut off the water flow twice, thus finally achieving a completely sealed effect, and even a small amount of water cannot pass through the valve. The support frame 21 can make the valve more stable, and the second screw hole 23 and the bolt 24 make the installation of the valve more convenient.

[0034] Referring to Figure 1 , Figure 4 and Figure 5, the water outlet mechanism 12 includes two fixed rods 1201. The bottom ends of the two fixed rods 1201 are both connected to the inner bottom wall of the connecting pipe 1. Limiting columns 1202 are connected to the outer walls of the two fixed rods 1201. Springs 1203 are connected to the left ends of the two limiting columns 1202. One ends of the two springs 1203 are both connected to a moving member 1204. The moving member 1204 is slidably connected to the outer walls of the two fixed rods 1201. A moving column 1205 penetrates through the interior of the moving member 1204. An extrusion block 1206 is connected to the left end of the moving column 1205. A connecting column 1207 is connected to the outer wall of the moving column 1205. A sealing plate 1208 is connected to the top of the connecting column 1207.

[0035] Specifically, when it is necessary to release the water in the water storage bin 6, rotate the turntable 4 so that the threaded rod 3 moves upward, causing the bottom of the sealing column 5 to leave the second sealing port 8 and not reach the position of the first sealing port 7. When the bee column leaves the position, the extrusion block 1206 moves leftward under the action of the spring 1203. The moving member 1204 slides on the fixed rod 1201, driving the connecting column 1207 to move leftward, thereby causing the sealing plate 1208 to move leftward. At this time, the water in the water storage bin 6 can flow out through the water outlet 11. Thus, the purpose of making the water in the water storage bin 6 flow out is achieved.

[0036] Refer to Figure 1 and Figure 2 , flanges 15 are connected to both the left and right sides of the connecting pipe 1. First screw holes 16 are opened in the interiors of the two flanges 15. Installation holes 17 are opened on both the left and right sides of the connecting pipe 1. Filter screens 18 are slidably connected to both the left and right sides of the connecting pipe 1. A support plate 19 is connected to the outer wall of the connecting pipe 1. A flow rate detection meter 20 is connected to the top of the support plate 19;

[0037] Specifically, the cooperation between the flange 15 and the first screw hole 16 can make the installation of the valve more convenient. The installation hole 17 can install the filter screen 18. The filter screen 18 can filter water. The flow rate detection meter 20 can detect the water flow rate, so that the staff can better understand the operation of the valve.

[0038] When it is necessary to close the valve, first rotate the turntable 4 in the direction indicated by the rotation direction indicator 13, so that the threaded rod 3 moves downward. The downward movement of the threaded rod 3 causes the sealing column 5 to move downward, passing through the first sealing port 7 and the second sealing port 8 in sequence. At the same time, the first sealing strip 9 on the first sealing port 7 and the second sealing strip 10 on the second sealing port 8 can seal the junction of the sliding connection between the sealing column 5 and the water storage chamber 6. At this time, when water flows in from the water inlet, the first sealing port 7 can block the water flow for the first time. When a small amount of water flows into the water storage chamber 6 through the first sealing port 7, due to the action of gravity, it will flow to the bottom of the water storage chamber 6, so that that part of the water is intercepted in the water storage chamber 6, and the water flowing downward along the sealing column 5 will be intercepted by the second sealing strip 10, so that the intercepting valve can cut off the water flow twice, thus achieving complete sealing, and even a small amount of water cannot pass through;

[0039] And when it is necessary to release the water in the water storage chamber 6, rotate the turntable 4 to make the threaded rod 3 move upward, so that the bottom of the sealing column 5 leaves the second sealing port 8, so that the extrusion block 1206 moves leftward under the action of the spring 1203. The moving part 1204 slides on the fixed rod 1201, driving the connecting column 12 to move leftward, so that the sealing plate 1208 moves leftward. At this time, the water in the water storage chamber 6 can flow out through the water outlet 11. Thus, the purpose of making the water in the water storage chamber 6 flow out is achieved.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A double insurance stop valve, comprising a connecting pipe (1), characterized in that: The top of the connecting pipe (1) is connected with a mounting seat (2). A threaded rod (3) is threadedly connected inside the mounting seat (2). The top of the threaded rod (3) is connected with a turntable (4). The bottom of the threaded rod (3) is connected with a sealing column (5). The inner bottom wall of the connecting pipe (1) is connected with a water storage tank (6). A first sealing opening (7) is formed at the top of the water storage tank (6). A first sealing strip (9) is connected to the outer wall of the first sealing opening (7). A second sealing opening (8) is formed at the bottom of the water storage tank (6). A second sealing strip (10) is connected to the outer wall of the second sealing opening (8). A water outlet (11) is formed at the bottom of the water storage tank (6). A water outlet mechanism (12) is arranged at the bottom of the water outlet (11). The water outlet mechanism (12) is used for draining the water storage tank (6).

2. The double-insurance stop valve according to claim 1, characterized in that: The water outlet mechanism (12) includes two fixed rods (1201). The bottom ends of the two fixed rods (1201) are both connected to the inner bottom wall of the connecting pipe (1). Limiting columns (1202) are connected to the outer walls of the two fixed rods (1201). Springs (1203) are connected to the left ends of the two limiting columns (1202). One ends of the two springs (1203) are both connected with a moving part (1204). The moving part (1204) is slidably connected to the outer walls of the two fixed rods (1201). A moving column (1205) penetrates through the inside of the moving part (1204). An extrusion block (1206) is connected to the left end of the moving column (1205). A connecting column (1207) is connected to the outer wall of the moving column (1205). The top of the connecting column (1207) is connected with a sealing plate (1208).

3. A double-insurance stop valve according to claim 1, characterized in that: A rotation direction indicator (13) is connected to the top of the turntable (4). Anti-slip patterns (14) are formed on the outer wall of the turntable (4).

4. A double-insurance stop valve according to claim 1, characterized in that: Flanges (15) are connected to both the left and right sides of the connecting pipe (1). First screw holes (16) are formed inside the two flanges (15).

5. A double-insurance stop valve according to claim 1, characterized in that: Mounting holes (17) are formed on both the left and right sides of the connecting pipe (1). Filter meshes (18) are slidably connected to both the left and right sides of the connecting pipe (1).

6. A double-insurance stop valve according to claim 1, characterized in that: A support plate (19) is connected to the outer wall of the connecting pipe (1). A flow rate detection meter (20) is connected to the top of the support plate (19).

7. A double-insurance stop valve according to claim 1, characterized in that: A support frame (21) is connected to the top of the mounting seat (2). A hexagonal nut (22) is connected to the top of the support frame (21).

8. A double-insurance stop valve according to claim 1, characterized in that: A second screw hole (23) is formed inside the mounting seat (2). A bolt (24) is threadedly connected inside the mounting seat (2).

Images