Eccentric semi-ball valve

Abstract

The utility model relates to the technical field of valves, in particular to an eccentric semi-ball valve which comprises a valve body, a valve handle seat installed on the valve body and a valve handle installed on the valve handle seat, a protruding column is fixedly installed at the exposed end of the valve handle, and a valve handle waterproof protection assembly is arranged between the front side face of the valve handle seat and the protruding column. The valve handle waterproof protection assembly comprises a fixed disc fixedly installed on the front side face of the valve handle seat and a front side disc arranged on the protruding column in a sleeving mode, a corrugated hose is fixedly installed between the fixed disc and the front side disc, a left guide sleeve and a right guide sleeve are fixedly installed on the front side face of the fixed disc, and a left guide column and a right guide column are fixedly installed on the rear side face of the front side disc. The guide columns are sleeved with the guide sleeves and connected with the guide columns in a sliding mode, a protective sleeve is fixedly installed on the front side face of the front side disc, a bearing is fixedly installed on a front side plate body of the protective sleeve, and the protruding column penetrates out of the bearing and is fixedly installed on an inner ring of the bearing. The water-proof protective cover has a water-proof protective effect, and is not easy to rust due to water spraying.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an eccentric hemispherical valve. Background Technology

[0002] Eccentric ball valves, as a special type of valve, play an important role in many industrial fields. They mainly control fluid flow through a hemispherical closing element offset from the valve body's centerline. The core component is a hemispherical closing element installed off-center from the valve body's centerline. This design makes eccentric ball valves perform well when handling media containing solid particles, high viscosity, or corrosive media, giving them unique performance characteristics.

[0003] Eccentric ball valves typically feature a horizontally positioned valve handle. Rotation of the handle drives the internal valve core to control opening and closing. Since the valve handle and its corresponding seat are threaded, these threads are largely exposed during rotation, especially when the valve core is open. When the eccentric ball valve is used outdoors, the exposed threads lack protective components, making them susceptible to rust from water exposure. Rusting further complicates valve rotation, affecting usability and causing inconvenience. Therefore, we propose an eccentric ball valve. Utility Model Content

[0004] The purpose of this invention is to provide an eccentric hemispherical valve to address the deficiencies mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An eccentric hemispherical valve includes a valve body, a valve stem seat mounted on the valve body, and a valve stem mounted on the valve stem seat. A protruding post is fixedly installed at the exposed end of the valve stem. A valve stem waterproof protection assembly is provided between the front side of the valve stem seat and the protruding post. The valve stem waterproof protection assembly includes a fixed plate fixedly installed on the front side of the valve stem seat and a front plate sleeved on the protruding post. A corrugated hose is fixedly installed between the fixed plate and the front plate. Two symmetrical guide sleeves are fixedly installed on the front side of the fixed plate. Two symmetrical guide posts are fixedly installed on the rear side of the front plate. The guide sleeves are sleeved on the guide posts and slidably connected to them. A protective sleeve is fixedly installed on the front side of the front plate. A bearing is fixedly installed on the front plate of the protective sleeve. The protruding post passes through the bearing and is fixedly installed on the inner ring of the bearing.

[0007] Preferably, end pipes are fixedly installed at both ends of the valve body, and flanges are fixedly installed at the ends of the end pipes.

[0008] Preferably, a knob is fixedly installed at the end of the protrusion, and the knob is located outside the protective sleeve.

[0009] Preferably, the protective sleeve has a central chamber with both ends connected to the outside, and the protruding post passes through the central chamber.

[0010] Preferably, a drainage hole communicating with the outside is provided at the bottom wall of the central chamber, and an inner water baffle is fixedly installed on the rear wall of the central chamber.

[0011] Preferably, the inner water-blocking cover is provided with a through-cavity that communicates with the outside, and the protruding column passes through the through-cavity.

[0012] Preferably, the inner diameter of the through-cavity increases sequentially from back to front, and the plane of the inner wall of the through-cavity is inclined downward at 15° to 30° toward the bearing side.

[0013] Preferably, a waterproof sleeve is fixedly installed on the front side of the protective sleeve, and an outer water-blocking cover is fixedly installed on the inner wall of the front end of the waterproof sleeve. The inner diameter of the outer water-blocking cover increases sequentially from back to front, and the protrusion extends through the waterproof sleeve and the outer water-blocking cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model, through the setting of a valve handle waterproof protection component, ensures that during use, the threaded connection part on the valve handle can be protected internally by a corrugated hose, achieving a waterproof protection effect. Since the corrugated hose can be folded and unfolded, and the protrusion and the protective sleeve are supported by a bearing, the protrusion can rotate freely, without affecting the normal inward and outward movement of the valve handle during rotation, thus achieving the effect of waterproof protection for the threaded connection part on the valve handle.

[0016] 2. The present invention can further prevent rainwater from entering by setting an outer water-blocking cover and an inner water-blocking cover. The drainage hole allows some water to enter the central cavity and be discharged out in time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3This is an exploded structural diagram of the valve handle waterproof protection component of this utility model;

[0020] Figure 4 This is a cross-sectional view of the protective sleeve of this utility model;

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Valve body; 10. End pipe; 11. Flange; 12. Valve handle seat; 13. Valve handle; 14. Protrusion; 15. Knob;

[0023] 2. Valve handle waterproof protection assembly; 20. Fixing plate; 21. Front side plate; 22. Guide sleeve; 23. Guide post; 24. Corrugated hose; 25. Protective sleeve; 251. Central chamber; 252. Drain hole; 26. Bearing; 27. Inner water baffle; 271. Through chamber; 28. Waterproof sleeve; 281. Outer water baffle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution: an eccentric hemispherical valve, including a valve body 1, a valve handle seat 12 mounted on the valve body 1, and a valve handle 13 mounted on the valve handle seat 12. A protrusion 14 is fixedly installed on the exposed end of the valve handle 13. A valve handle waterproof protection component 2 is provided between the front side of the valve handle seat 12 and the protrusion 14. The valve handle waterproof protection component 2 includes a fixed plate 20 fixedly installed on the front side of the valve handle seat 12 and a front plate 21 sleeved on the protrusion 14. The protrusion 14 and the front plate 21 are rotatably connected. A corrugated hose 24 is fixedly installed between the fixed plate 20 and the front plate 21. The corrugated hose 24 has the effect of being able to fold and store when subjected to force and unfold when pulled, so that the folding and unfolding of the corrugated hose 24 can just meet the inward or outward movement of the valve handle 13 when it rotates.

[0026] Specifically, two symmetrical guide sleeves 22 are fixedly installed on the front side of the fixed plate 20, and two symmetrical guide posts 23 are fixedly installed on the rear side of the front plate 21. The guide sleeves 22 are fitted onto the guide posts 23 and are slidably connected to the guide posts 23. A protective sleeve 25 is fixedly installed on the front side of the front plate 21. A bearing 26 is fixedly installed on the front plate of the protective sleeve 25. The protrusion 14 passes through the bearing 26 and is fixedly installed on the inner ring of the bearing 26, so that the protrusion 14 can rotate. At the same time, when the protrusion 14 rotates and drives the valve handle 13 to rotate, the valve handle 13 will move inward or outward synchronously, which can drive the corrugated hose 24 to fold or unfold normally.

[0027] In this embodiment, end pipes 10 are fixedly installed at both ends of the valve body 1, and flanges 11 are fixedly installed at the ends of the end pipes 10. The flanges 11 are used to fix and connect with the flanges on the external pipeline using fastening bolts.

[0028] Specifically, a knob 15 is fixedly installed at the end of the protrusion 14. The knob 15 is located outside the protective sleeve 25 and is used for rotation operation.

[0029] Furthermore, the protective sleeve 25 is provided with a central chamber 251 that is connected to the outside at both ends. The protrusion 14 passes through the central chamber 251 for normal horizontal outward operation of the protrusion 14.

[0030] In addition, a drain hole 252 communicating with the outside is provided at the bottom wall of the central chamber 251. The drain hole 252 is used to smoothly discharge the water that enters the central chamber 251.

[0031] It is worth noting that an inner water-blocking cover 27 is fixedly installed on the rear wall of the central chamber 251. The inner water-blocking cover 27 has an exit chamber 271 that communicates with the outside. The protruding post 14 passes through the exit chamber 271. The inner diameter of the exit chamber 271 increases from back to front. The plane of the inner wall of the exit chamber 271 is inclined downward at 15° to 30° towards the bearing 26, so that the inner water-blocking cover 27 can play a certain role in blocking rainwater from the inside.

[0032] It is worth noting that a waterproof sleeve 28 is fixedly installed on the front side of the protective sleeve 25, and an outer water baffle 281 is fixedly installed on the inner wall of the front end of the waterproof sleeve 28. The inner diameter of the outer water baffle 281 increases from back to front. The protrusion 14 passes through the waterproof sleeve 28 and the outer water baffle 281, and the outer water baffle 281 can achieve further water blocking operation from the outside.

[0033] When the eccentric hemispherical valve of this utility model is in use, as the knob 15 rotates, it drives the protrusion 14 and the valve handle 13 to rotate. As the valve handle 13 rotates in the forward or reverse direction, it moves outward or inward simultaneously. During the movement, it can drive the protective sleeve 25 rotatably connected to the protrusion 14 to move synchronously. After the protective sleeve 25 moves, it can squeeze or pull the corrugated hose 24, so that the corrugated hose 24 can be folded or unfolded normally. The corrugated hose 24 can be fitted onto the threaded connection part on the valve handle 13 to achieve waterproof protection. The outer water shield 281 and the inner water shield 27 can prevent rainwater from entering the corrugated hose 24.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An eccentric hemispherical valve, comprising a valve body (1), a valve stem seat (12) mounted on the valve body (1), and a valve stem (13) mounted on the valve stem seat (12), characterized in that: A protrusion (14) is fixedly installed on the exposed end of the valve handle (13). A valve handle waterproof protection assembly (2) is provided between the front side of the valve handle seat (12) and the protrusion (14). The valve handle waterproof protection assembly (2) includes a fixing plate (20) fixedly installed on the front side of the valve handle seat (12) and a front side plate (21) sleeved on the protrusion (14). A corrugated hose (24) is fixedly installed between the fixing plate (20) and the front side plate (21). A [missing information] is fixedly installed on the front side of the fixing plate (20). Two symmetrical guide sleeves (22) are provided on the left and right sides. Two symmetrical guide posts (23) are fixedly installed on the rear side of the front side plate (21). The guide sleeves (22) are fitted on the guide posts (23) and are slidably connected to the guide posts (23). A protective sleeve (25) is fixedly installed on the front side of the front side plate (21). A bearing (26) is fixedly installed on the front side plate of the protective sleeve (25). The protrusion (14) passes through the bearing (26) and is fixedly installed on the inner ring of the bearing (26).

2. The eccentric hemispherical valve according to claim 1, characterized in that: Both ends of the valve body (1) are fixedly installed with end pipes (10), and the ends of the end pipes (10) are fixedly installed with flanges (11).

3. The eccentric hemispherical valve according to claim 1, characterized in that: A knob (15) is fixedly installed at the end of the protrusion (14), and the knob (15) is located outside the protective sleeve (25).

4. The eccentric hemispherical valve according to claim 1, characterized in that: The protective sleeve (25) has a central chamber (251) with both ends connected to the outside, and the protruding post (14) passes through the central chamber (251).

5. The eccentric hemispherical valve according to claim 4, characterized in that: The bottom wall of the central chamber (251) is provided with a drainage hole (252) that communicates with the outside. An inner water baffle (27) is fixedly installed on the rear wall of the central chamber (251).

6. The eccentric hemispherical valve according to claim 5, characterized in that: The inner water shield (27) is provided with an exit chamber (271) that communicates with the outside, and the protruding column (14) passes through the exit chamber (271).

7. The eccentric hemispherical valve according to claim 6, characterized in that: The inner diameter of the through-hole (271) increases from back to front, and the plane of the inner wall of the through-hole (271) is inclined downward at 15° to 30° toward the bearing (26).

8. The eccentric hemispherical valve according to claim 1, characterized in that: A waterproof sleeve (28) is fixedly installed on the front side of the protective sleeve (25), and an outer water shield (281) is fixedly installed on the inner wall of the front end of the waterproof sleeve (28). The inner diameter of the outer water shield (281) increases from back to front, and the protrusion (14) passes through the waterproof sleeve (28) and the outer water shield (281).

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