Wear-resistant stop valve

Abstract

The utility model relates to the technical field of stop valves, in particular to a wear-resistant stop valve which comprises a valve body, a through groove is formed in the valve body, a column body is connected in the valve body in a sliding mode, a groove is formed in the lower end of the column body, a blocking block is fixedly connected in the groove, a notch is formed in the valve body, and a through hole is formed in the through groove. The lower end of the column body is in sliding connection with the notch; the upper end of the upper cover is rotationally connected with a rod body in a penetrating mode, and the upper end of the upper cover is slidably connected with a sliding rod in a penetrating mode. When the interior of the valve body needs to be closed, the rod body rotates, so that the column body longitudinally slides in the valve body, the blocking block slides to the through groove to conduct first blocking, the lower end of the column body slides to the interior of the notch to conduct second blocking on the through groove, and meanwhile the sliding block is pushed through the elastic force of the first spring, so that the sealing gasket is tightly attached to the interior of the valve body; and through multiple blocking, fluid leakage in the valve body is avoided, and erosive wear to the interior of the valve body is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a wear-resistant stop valve. Background Art

[0002] The stop valve, also known as the intercept valve, is the most widely used valve. The reason why it is so popular is that the friction between the sealing surfaces during opening and closing is small, it is relatively durable, the opening height is not large, it is easy to manufacture and maintain, and it is suitable not only for medium and low pressures, but also for high pressures. The stop valve is a valve that drives the valve disc (also called the closing piece) to move up and down along the center line of the valve seat by rotating the handwheel or other transmission device to open or close the flow of fluid in the pipeline.

[0003] After searching, a utility model patent with Chinese patent publication number CN212868707U discloses a stop valve, which includes a valve body and a valve cover, the valve cover is connected to the top of the valve body by bolts, a valve plate is arranged inside the valve body, one end of the valve plate facing the valve cover is rotatably connected to a valve stem, the valve stem is threadedly connected to the valve cover, a limiting structure for limiting the rotation of the valve stem is arranged on the valve stem, a movable seat is fixedly connected to the upper end of the valve stem, a movable hole is provided on the end face of the movable seat facing the valve stem, a movable rod is threadedly connected to the movable hole, a fixing groove for embedding the movable rod is provided on the circumferential surface of the valve stem, and the upper end face of the fixing groove is connected to the upper end face of the valve stem. This application has the effect of preventing the valve stem from rotating.

[0004] After searching the above patent, it was found that the accidental touch of the stop valve was handled. However, the internal seal design of the device was relatively simple and did not fully consider the wear resistance requirements, resulting in eddy currents and scouring when the medium flows, thereby accelerating wear. Utility Model Content

[0005] The utility model aims to provide a wear-resistant stop valve, and the structure thereof is used to improve the wear resistance of the stop valve, so as to solve the problem of poor wear resistance of the stop valve in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A wear-resistant stop valve comprises a valve body, a through groove is provided inside the valve body, a column is slidably connected inside the valve body, a groove is provided at the lower end of the column, a block is fixedly connected inside the groove, a notch is provided inside the valve body, and the lower end of the column is slidably connected to the notch; an upper cover, a rod body is rotatably connected through the upper end of the upper cover, the lower end of the rod body is rotatably connected to the column thread, a sliding rod is slidably connected through the upper end of the upper cover, and the lower end of the sliding rod is fitted with the upper end of the column.

[0008] Preferably, a slide groove is arranged inside the lower end of the column, the slide groove is communicated with the groove, a slider is slidably connected inside the slide groove, and the slide groove and the slider are both arranged in a ring shape.

[0009] Preferably, a plurality of springs are distributed in a circular array inside the slide groove, and a lower end of the spring is fixedly connected to an upper end of the slide block.

[0010] Preferably, a plate is fixedly connected to the upper end of the slide rod, a second spring is fixedly connected between the lower end of the plate and the upper end of the upper cover, and the second spring is sleeved on the outside of the slide rod.

[0011] Preferably, a rotating handle is provided at the upper end of the rod body, and a rubber sleeve is provided outside the rotating handle.

[0012] Preferably, flanges are provided on the upper end of the valve body and the side wall of the upper cover, the two flanges are fixedly connected by bolts, and a sealing ring is provided between the two flanges.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] 1. When the inside of the valve body needs to be closed, the rod body rotates to make the column slide longitudinally inside the valve body, so that the block slides to the through groove for the first blockage, and the lower end of the column slides to the inside of the notch to block the through groove for the second blockage. At the same time, the slider is pushed by the elastic force of spring 1, so that the sealing gasket fits tightly with the inside of the valve body, thereby forming a third blockage of the through groove. Through multiple blockages, fluid leakage inside the valve body is avoided, and the scouring and wear of the inside of the valve body is accelerated.

[0015] 2. When the column slides downward, the plate is pulled by spring 2, so that the plate drives the slide bar to slide downward, which intuitively reflects the closed state inside the valve body. When the column slides upward, the column pushes the slide bar upward, which intuitively reflects the open state inside the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the external structure of a wear-resistant stop valve.

[0017] Figure 2 The utility model is a front sectional structural schematic diagram of a wear-resistant stop valve.

[0018] Figure 3 The utility model is a rear cross-sectional structural schematic diagram of a wear-resistant stop valve.

[0019] Figure 4 for Figure 2 Schematic diagram of the structure of part A.

[0020] Figure 5 for Figure 2Schematic diagram of the structure of part B.

[0021] In the figure: 1 valve body, 2 through groove, 3 upper cover, 4 rod body, 5 handle, 6 column, 7 blocking block, 8 notch, 9 slide groove, 10 slider, 11 spring 1, 12 slide rod, 13 plate, 14 spring 2, 15 flange. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-5 A wear-resistant stop valve comprises a valve body 1, a through groove 2 is arranged inside the valve body 1, a column 6 is slidably connected inside the valve body 1, a groove is arranged at the lower end of the column 6, a block 7 is fixedly connected inside the groove, a notch 8 is arranged inside the valve body 1, and the lower end of the column 6 is slidably connected to the notch 8; an upper cover 3, a rod body 4 is rotatably connected to the upper end of the upper cover 3, the lower end of the rod body 4 is threadedly rotatably connected to the column 6, a slide rod 12 is slidably connected to the upper end of the upper cover 3, and the lower end of the slide rod 12 is fitted with the upper end of the column 6. When it is necessary to When the interior of the valve body 1 is closed, the rod body 4 rotates, causing the column 6 to slide longitudinally inside the valve body 1, causing the block 7 to slide to the through groove 2 for the first blockage, and at the same time, the lower end of the column 6 slides to the inside of the notch 8 to perform a second blockage on the through groove 2. Through multiple blockages, fluid leakage inside the valve body 1 is avoided, and the wear of the interior of the valve body 1 is accelerated, thereby improving the wear resistance of the valve body 1. When the column 6 slides longitudinally, the slide rod 12 also slides longitudinally at the same time, thereby intuitively reflecting the switching state of the interior of the valve body 1.

[0024] A slide groove 9 is arranged inside the lower end of the column 6, and the slide groove 9 is connected with the groove. A slider 10 is slidably connected inside the slide groove 9. Both the slide groove 9 and the slider 10 are arranged in a ring shape. A sealing gasket is fixedly connected to the lower end of the slider 10, and the lower end of the sealing gasket fits with the inside of the valve body 1, thereby forming a third blockage for the through groove 2.

[0025] A plurality of springs 11 are arranged in a circular array inside the slide groove 9. The lower end of the spring 11 is fixedly connected to the upper end of the slider 10. The slider 10 is pushed by the elastic force of the spring 11, so that the sealing gasket fits tightly against the inside of the valve body 1.

[0026] The upper end of the slide rod 12 is fixedly connected with a plate 13, and a spring 2 14 is fixedly connected between the lower end of the plate 13 and the upper end of the upper cover 3. The spring 2 14 is sleeved on the outside of the slide rod 12. When the column 6 slides downward, the plate 13 is pulled by the spring 2 14, so that the plate 13 drives the slide rod 12 to slide downward.

[0027] A rotating handle 5 is disposed at the upper end of the rod body 4 , and a rubber sleeve is disposed outside the rotating handle 5 . The rod body 4 is rotated by manually rotating the rotating handle 5 .

[0028] Flanges 15 are provided on the upper end of the valve body 1 and the side wall of the upper cover 3. The two flanges 15 are fixedly connected by bolts. A sealing ring is provided between the two flanges 15. The flanges 15 facilitate the installation of the upper cover 3 on the upper end of the valve body 1.

[0029] When the valve body 1 needs to be closed, the rod 4 rotates to make the column 6 slide longitudinally inside the valve body 1, so that the block 7 slides to the through groove 2 for the first blocking, and the lower end of the column 6 slides to the inside of the notch 8 to block the through groove 2 for the second blocking. At the same time, the slider 10 is pushed by the elastic force of the spring 11, so that the sealing gasket fits tightly with the inside of the valve body 1, thereby forming a third blocking of the through groove 2. Through multiple blocking designs, fluid leakage inside the valve body 1 is avoided, and the scouring and wear of the inside of the valve body 1 is accelerated, thereby improving the wear resistance of the valve body 1.

[0030] When the column 6 slides downward, the plate 13 is pulled by the spring 2 14, so that the plate 13 drives the slide bar 12 to slide downward. When the column 6 slides upward, the column 6 pushes the slide bar 12 upward.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant stop valve, characterized in that: include A valve body (1), wherein a through groove (2) is provided inside the valve body (1), a column (6) is slidably connected inside the valve body (1), a groove is provided at the lower end of the column (6), a block (7) is fixedly connected inside the groove, a notch (8) is provided inside the valve body (1), and the lower end of the column (6) is slidably connected to the notch (8); An upper cover (3), wherein the upper end of the upper cover (3) passes through a rod body (4) for rotational connection, the lower end of the rod body (4) is threadedly rotationally connected to a column (6), the upper end of the upper cover (3) passes through a slide rod (12) for sliding connection, and the lower end of the slide rod (12) is in contact with the upper end of the column (6).

2. A wear-resistant stop valve according to claim 1, characterized in that: A slide groove (9) is provided inside the lower end of the column (6), the slide groove (9) is communicated with the groove, a slider (10) is slidably connected inside the slide groove (9), and the slide groove (9) and the slider (10) are both arranged in a ring shape.

3. A wear-resistant stop valve according to claim 2, characterized in that: A plurality of springs one (11) are distributed in a circular array inside the slide groove (9), and the lower end of the spring one (11) is fixedly connected to the upper end of the slide block (10).

4. A wear-resistant stop valve according to claim 1, characterized in that: The upper end of the slide rod (12) is fixedly connected to a plate (13), and a second spring (14) is fixedly connected between the lower end of the plate (13) and the upper end of the upper cover (3), and the second spring (14) is sleeved on the outside of the slide rod (12).

5. A wear-resistant stop valve according to claim 1, characterized in that: A rotating handle (5) is provided at the upper end of the rod body (4), and a rubber sleeve is provided outside the rotating handle (5).

6. A wear-resistant stop valve according to claim 1, characterized in that: The upper end of the valve body (1) and the side wall of the upper cover (3) are both provided with flanges (15), the two flanges (15) are fixedly connected by bolts, and a sealing ring is provided between the two flanges (15).

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