An electric shut-off valve

Abstract

This utility model discloses an electric shut-off valve, relating to the field of shut-off valve technology. The electric shut-off valve includes a valve body, with an inlet flange and a discharge flange fixedly connected to both ends of the valve body. A second flange is fixedly connected to the top of the valve body, and an electric telescopic rod is provided on the top of the valve body. A first flange is fixedly connected to the surface of the electric telescopic rod, and a separator ring is fixedly connected to the inner wall of the valve body. A sealing block is slidably connected to the output end of the electric telescopic rod. During the closing process, this electric shut-off valve allows the medium to flow out slowly, buffering the impact force of the medium on the sealing block. This avoids the situation where conventional shut-off valves directly cut off the flow of the medium upon closing, resulting in a large impact force on the sealing block and making the connection between the sealing block and the electric telescopic rod prone to breakage.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to an electric gate valve. Background Technology

[0002] In fluid transport systems, electric shut-off valves are commonly used to control the delivery of fluids. An electric shut-off valve generally consists of a valve body, a motor, a valve core, and a valve seat.

[0003] However, when using existing gate valves, especially when closing them, the valve core usually descends directly into the valve body to block the flow of the medium. However, because the flow of the medium is directly blocked without buffering, the impact force of the medium acts directly on the valve core, which can easily damage the connection point between the valve core and the drive component, thus affecting the service life of the device. Therefore, an electric gate valve is proposed. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an electric shut-off valve that can solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric shut-off valve, comprising a shut-off valve body, with an inlet flange and a discharge flange fixedly connected to both ends of the shut-off valve body, a second flange fixedly connected to the top of the shut-off valve body, an electric telescopic rod provided on the top of the shut-off valve body, a first flange fixedly connected to the surface of the electric telescopic rod, a separator ring fixedly connected to the inner wall of the shut-off valve body, a sealing block slidably connected to the output end of the electric telescopic rod, the surface of the sealing block slidably connected to the interior of the shut-off valve body, a discharge port with a convex cross-section opened inside the sealing block, a support plate fixedly connected to the output end of the electric telescopic rod, the surface of the support plate slidably connected to the discharge port, a protrusion fixedly connected to the bottom of the support plate, the protrusion matching the opening of the discharge port.

[0006] Preferably, a sealing ring is fixedly connected to the inner wall of the partition ring, a filter plate is fixedly connected to the inner wall of the partition ring, and the sealing block is adapted to the inner wall of the sealing ring.

[0007] Preferably, the surface of the sealing block has discharge holes arranged equidistantly in a circle, and the discharge holes are connected to the discharge port.

[0008] Preferably, a spring is fixedly connected to the inner wall of the discharge port, and the upper end of the spring is fixedly connected to the bottom of the support plate.

[0009] Preferably, a storage box is fixedly connected to the bottom of the shut-off valve body, and a slag discharge hole is provided at the bottom of the storage box.

[0010] Preferably, the storage box is internally threaded with a sealing bolt, the diameter of which is larger than the inner diameter of the slag discharge hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This electric shut-off valve allows the medium to flow out slowly during the closing process, thus buffering the impact force of the medium on the sealing block. This avoids the situation where conventional shut-off valves directly cut off the flow of the medium when closing, resulting in a large impact force on the sealing block and making the connection between the sealing block and the electric telescopic rod prone to breakage. This improves the performance of the device and is worth promoting. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of an electric shut-off valve according to the present invention; Figure 2 This is a schematic diagram of the surface structure of the shut-off valve body of this utility model; Figure 3 This is a schematic diagram of the internal structure of the shut-off valve body of this utility model; Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0013] Reference numerals in the attached drawings: 1. Electric telescopic rod; 2. Gate valve body; 3. Storage box; 4. Slag discharge hole; 5. First flange; 6. Feed flange; 7. Discharge flange; 8. Support plate; 9. Protrusion; 10. Discharge port; 11. Spring; 12. Filter plate; 13. Sealing block; 14. Discharge hole; 15. Second flange; 16. Separating ring; 17. Sealing ring; 18. Sealing bolt. Detailed Implementation

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0015] Please see Figure 1-4This utility model provides a technical solution: an electric shut-off valve, including a shut-off valve body 2, with an inlet flange 6 and a discharge flange 7 fixedly connected to both ends of the shut-off valve body 2 for connecting to external pipelines to realize the entry and exit of the medium in the shut-off valve body 2. A second flange 15 is fixedly connected to the top of the shut-off valve body 2, and an electric telescopic rod 1 is provided on the top of the shut-off valve body 2. A first flange 5 is fixedly connected to the surface of the electric telescopic rod 1, and the first flange 5 and the second flange 15 are connected by bolts to realize the connection between the electric telescopic rod 1 and the shut-off valve body 2.

[0016] A storage box 3 is fixedly connected to the bottom of the shut-off valve body 2 for storing filtered impurities. A slag discharge hole 4 is provided at the bottom of the storage box 3 to discharge the impurities. A sealing bolt 18 is threaded inside the storage box 3. The diameter of the sealing bolt 18 is larger than the inner diameter of the slag discharge hole 4, so that the sealing bolt 18 can block and seal the slag discharge hole 4 after being screwed into the storage box 3. At the same time, the surface of the support plate 8 is wrapped with raw rubber tape to seal the gap between the storage box 3 and the support plate 8, thereby preventing the leakage of the medium.

[0017] A partition ring 16 is fixedly connected to the inner wall of the gate valve body 2, a sealing ring 17 is fixedly connected to the inner wall of the partition ring 16, and a filter plate 12 is fixedly connected to the inner wall of the partition ring 16. Thus, by setting the partition ring 16, the flow direction of the medium entering the gate valve body 2 can be changed, so that the medium can only continue to flow after passing through the filter plate 12, thereby filtering the medium flowing in the gate valve body 2 with the help of the filter plate 12.

[0018] The output end of the electric telescopic rod 1 is slidably connected to a sealing block 13. The surface of the sealing block 13 is slidably connected to the inside of the shut-off valve body 2. The sealing block 13 is adapted to the inner wall of the sealing ring 17. Thus, by setting the sealing ring 17, the gap between the sealing block 13 and the inner wall of the partition ring 16 can be sealed, so that the medium cannot continue to flow after the device is closed, ensuring the normal use of the device.

[0019] The sealing block 13 has a convex-shaped discharge port 10 inside. The output end of the electric telescopic rod 1 is fixedly connected to a support plate 8. The surface of the support plate 8 is slidably connected to the discharge port 10. The bottom of the support plate 8 is fixedly connected to a protrusion 9. The protrusion 9 matches the opening of the discharge port 10 to seal the inner wall of the discharge port 10.

[0020] The surface of the sealing block 13 is provided with discharge holes 14 arranged equidistantly in a circle. The discharge holes 14 are connected to the discharge port 10. A spring 11 is fixedly connected to the inner wall of the discharge port 10. The upper end of the spring 11 is fixedly connected to the bottom of the support plate 8 to reset the sealing block 13.

[0021] Working principle: When the gate valve is in use, the medium enters the gate valve body 2 through the feed flange 6, and enters the bottom of the partition ring 16 after being blocked by the partition ring 16. After being filtered by the filter plate 12, it is discharged through the discharge flange 7. The intercepted impurities are intercepted by the filter plate 12. Therefore, when the medium stops transporting, under the action of gravity, the impurities no longer remain on the surface of the filter plate 12, and fall into the storage box 3. When it is necessary to clean the impurities in the storage box 3, the sealing bolt 18 can be unscrewed so that the slag discharge hole 4 is no longer closed, so that the impurities are discharged through the slag discharge hole 4, thereby achieving the cleaning of impurities and ensuring the quality of medium transmission.

[0022] When the shut-off valve is closed, the electric telescopic rod 1 is activated, causing its output end to extend and push the support plate 8. This causes the support plate 8 to compress the spring 11. Since the sealing block 13 has room to move, the spring 11 pushes the sealing block 13, causing it to descend and insert into the sealing ring 17. At this time, the medium, after being filtered by the filter plate 12, enters the outlet 10 and is discharged through the outlet hole 14, and then through the discharge flange 7. As the output end of the electric telescopic rod 1 extends again, the sealing block 13 comes into contact with the filter plate 12, allowing the medium to continue to be discharged through the outlet hole 14. As the output end of the electric telescopic rod 1 extends again, it pushes the support plate 8 to descend in the discharge port 10, thereby pushing the protrusion 9 to gradually close the opening of the discharge port 10, thus stopping the flow of the medium and achieving the closure of the shut-off valve. Because the medium flows out slowly during the closing process, the impact force of the medium on the sealing block 13 is buffered, avoiding the situation where conventional shut-off valves directly cut off the flow of the medium when closing, resulting in a large impact force of the medium on the sealing block 13, which makes the connection between the sealing block 13 and the electric telescopic rod 1 prone to breakage. This improves the performance of the device and is worth promoting.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An electric shut-off valve comprising a shut-off valve body (2), characterized in that: The two ends of the shut-off valve body (2) are respectively fixedly connected to the feed flange (6) and the discharge flange (7). The top of the shut-off valve body (2) is fixedly connected to the second flange (15). The top of the shut-off valve body (2) is provided with an electric telescopic rod (1). The surface of the electric telescopic rod (1) is fixedly connected to the first flange (5). The inner wall of the shut-off valve body (2) is fixedly connected to the partition ring (16). The output end of the electric telescopic rod (1) is slidably connected to the sealing block (13). The surface of the sealing block (13) is slidably connected to the inside of the shut-off valve body (2). The inside of the sealing block (13) is provided with a discharge port (10) with a convex cross section. The output end of the electric telescopic rod (1) is fixedly connected to the support plate (8). The surface of the support plate (8) is slidably connected to the discharge port (10). The bottom of the support plate (8) is fixedly connected to the protrusion (9). The protrusion (9) matches the opening of the discharge port (10).

2. An electric shut-off valve according to claim 1, characterized in that: A sealing ring (17) is fixedly connected to the inner wall of the partition ring (16), and a filter plate (12) is fixedly connected to the inner wall of the partition ring (16). The sealing block (13) is adapted to the inner wall of the sealing ring (17).

3. An electric shut-off valve according to claim 2, characterized in that: The surface of the sealing block (13) is provided with discharge holes (14) arranged in a circumferentially equidistant pattern, and the discharge holes (14) are connected to the discharge port (10).

4. An electric shut-off valve according to claim 3, characterized in that: A spring (11) is fixedly connected to the inner wall of the discharge port (10), and the upper end of the spring (11) is fixedly connected to the bottom of the support plate (8).

5. An electric shut-off valve according to claim 4, characterized in that: The bottom of the shut-off valve body (2) is fixedly connected to a storage box (3), and the bottom of the storage box (3) is provided with a slag discharge hole (4).

6. An electric shut-off valve according to claim 5, characterized in that: The storage box (3) is internally threaded with a sealing bolt (18), the diameter of which is larger than the inner diameter of the slag discharge hole (4).

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