An intelligent eccentric hemispherical valve

Abstract

The present invention relates to the technical field of eccentric hemispherical valves, and discloses an intelligent eccentric hemispherical valve, comprising a valve body, a valve disc and a hemispherical ball, wherein the valve disc is connected to a valve stem extending into the interior of the valve body, the valve stem is connected to an arc frame at one end inside the valve body, and the hemispherical ball is connected through the arc frame; when the hemispherical ball needs to be rotated to switch the hemispherical valve, in order to avoid mechanical friction between the sealing surface of the hemispherical ball and the inner wall of the valve body, it is necessary to lift a lifting handle to allow the convex teeth at the end of the pull rod to separate from the locking groove of the valve body, and at the same time, the lifting block rises to push the pushing block to make the slide frame slide inside the slide groove, so that the hemispherical ball moves toward the arc frame. At this time, the hemispherical ball is driven to rotate by the valve disc, and after the adjustment is completed, the lifting handle is released, and the convex teeth at the end of the pull rod can be reinserted into the locking groove of the valve body under the action of a reset spring to be locked. At the same time, under the action of the sealing spring, the hemispherical ball can be pushed out again in the direction away from the arc frame, so as to realize the switching and flow adjustment operations of the eccentric hemispherical valve.

Description

Technical Field

[0001] The invention relates to the technical field of eccentric hemispherical valves, in particular to an intelligent eccentric hemispherical valve. Background Art

[0002] As a common fluid control valve, the intelligent eccentric hemispherical valve is widely used in many fields such as petroleum, chemical industry, medicine, water treatment, etc. This valve is widely used in various pipeline systems due to its compact structure, rapid opening and closing, and good sealing performance. Its basic principle is to control the opening and closing of the valve by rotating the hemispherical body through electric control to realize the circulation and cutoff of the fluid medium.

[0003] At present, in the design of eccentric hemispherical valves, the hemispherical body and the valve seat are usually sealed by the contact of the sealing surface, relying on friction to achieve sealing. However, in actual application, the eccentric hemispherical valve is prone to a problem after long-term use: due to mechanical wear on the surface of the hemispherical body, the shape and size of its sealing surface will change, which will reduce the contact pressure between the sealing surfaces and cause the sealing effect to deteriorate. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent eccentric hemispherical valve, aiming to solve the problem that the sealing effect of the existing eccentric hemispherical valve deteriorates due to mechanical wear of the hemispherical sealing surface after long-term use.

[0005] The present invention is implemented as follows: an intelligent eccentric hemispherical valve comprises a valve body, a valve disc and a hemispherical valve, wherein the valve disc is connected to a valve stem extending to the inside of the valve body, one end of the valve stem located inside the valve body is connected to an arc frame, and the hemispherical valve is connected via the arc frame; The valve stem is also provided with a handle at one end outside the valve body, and the handle is connected to a pull rod extending to the inside of the valve body. The handle unlocks the rotation restriction of the hemisphere through the pull rod and adjusts the distance between the hemisphere and the arc frame.

[0006] Preferably, the valve stem is hollow, and a through groove is formed at the end of the valve stem; A connecting rod is connected between the two handles, and the connecting rod passes through the through slot. A return spring is also arranged on the inner wall of the end of the through slot, and the other end of the return spring contacts the middle of the handle.

[0007] Preferably, the arc frame is provided with a horizontally arranged slide groove at the portion where the pull rod passes through, a support rod is arranged on the inner wall of the slide groove on the side away from the arc surface of the arc frame, a telescopic sleeve rod is sleeved on the outside of the support rod, and a sealing spring is arranged between the support rod and the sleeve rod.

[0008] Preferably, both ends of the hemisphere are provided with embedding grooves, the inner wall of the embedding groove is connected with a slide, the slide slides inside the slide groove, and the slide contacts the end of the sleeve rod.

[0009] Preferably, the arc-shaped frame is provided with a semicircular groove at the through-portion of the pull rod, and a push block is welded to the corresponding position of the pull rod at the groove.

[0010] Preferably, a convex tooth is provided at the end of the pull rod, and a locking groove corresponding to the convex tooth is provided on the inner side of the bottom of the valve body.

[0011] Preferably, a top block is provided on a surface of one side of the slide away from the sleeve rod, and mutually matching chamfered angles are provided between the top of the push block and the bottom of the top block.

[0012] The beneficial effects of the intelligent eccentric hemispherical valve disclosed by the present invention are as follows: when the hemispherical valve needs to be turned to switch the hemispherical valve, in order to avoid mechanical friction between the hemispherical sealing surface and the inner wall of the valve body, it is necessary to lift the lifting handle to allow the convex teeth at the end of the pull rod to disengage from the locking groove of the valve body, and at the same time, the lifting block rises to push the pushing block to make the slide slide inside the slide groove, and the hemisphere is moved toward the arc frame. At this time, the hemisphere is driven to rotate by the valve disc. After the adjustment is completed, the lifting handle is released, and the convex teeth at the end of the pull rod can be reinserted into the locking groove of the valve body under the action of the reset spring to lock it. At the same time, under the action of the sealing spring, the hemisphere can be pushed out again in the direction away from the arc frame, so as to realize the switching and flow adjustment operations of the eccentric hemispherical valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of an intelligent eccentric hemispherical valve provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of an intelligent eccentric hemispherical valve provided by an embodiment of the present invention; Figure 3 This is an intelligent eccentric hemispherical valve provided by the embodiment of the present invention. Figure 2 Schematic diagram of cross-section structure; Figure 4 This is an intelligent eccentric hemispherical valve provided by the embodiment of the present invention. Figure 3 A schematic diagram of the partially enlarged structure at center A; Figure 5 It is a schematic diagram of the arc frame and hemisphere splitting of an intelligent eccentric hemisphere valve provided in an embodiment of the present invention.

[0014] Marking Description: 1. Valve body; 2. Valve disc; 3. Handle; 4. Hemisphere; 21. Valve stem; 22. Arc frame; 23. Slide groove; 24. Slot; 25. Support rod; 26. Sealing spring; 27. Sleeve rod; 31. Connecting rod; 32. Pull rod; 33. Return spring; 34. Push block; 35. Protruding teeth; 41. Embedded groove; 42. Slide; 43. Top block. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0017] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0018] In this embodiment: Reference Figure 1 As shown, a preferred embodiment of the present invention is provided.

[0019] An intelligent eccentric hemispherical valve of this embodiment comprises a valve body 1, a valve disc 2 and a hemispherical ball 4, wherein the valve disc 2 is connected to a valve stem 21 extending into the interior of the valve body 1, and one end of the valve stem 21 located inside the valve body 1 is connected to an arc frame 22, and the hemispherical ball 4 is connected via the arc frame 22; The valve stem 21 is also provided with a handle 3 at one end outside the valve body 1, and the handle 3 is connected to a pull rod 32 extending into the inside of the valve body 1. The handle 3 unlocks the rotation restriction of the hemisphere 4 through the pull rod 32 and adjusts the distance between the hemisphere 4 and the arc frame 22; As attached Figure 2 As shown, the valve stem 21 is hollow, and a through slot is formed at the end of the valve stem 21. A connecting rod 31 is connected between the two handles 3. The connecting rod 31 passes through the through slot, and a return spring 33 is also formed at the inner wall of the end of the through slot. The other end of the return spring 33 contacts the middle of the handle 3. By lifting the handle 3 and passing through the connecting rod 31, the pull rod 32 slides in the through slot of the valve stem 21 and compresses the return spring 33. When the handle 3 is released, the pull rod 32 can be reset by the return spring 33. For further information, see Attachment Figure 3-4As shown, the valve body 1 includes a liquid inlet and a liquid outlet which are interconnected, and a hemisphere 4 is placed between the two for rotating to open or close the passage therebetween. The arc frame 22 is provided with a horizontally arranged slide groove 23 at the penetration portion of the pull rod 32, and a support rod 25 is provided on the inner wall of the slide groove 23 on the side away from the arc surface of the arc frame 22. A telescopic sleeve rod 27 is sleeved on the outside of the support rod 25, and a sealing spring 26 is provided between the support rod 25 and the sleeve rod 27. Both ends of the hemisphere 4 are provided with an embedding groove 41, and a slide 42 is connected to the inner wall of the embedding groove 41. The slide 42 slides inside the slide groove 23, and the slide 42 contacts the end of the sleeve rod 27. By default, due to the presence of the sealing spring 26, the sleeve rod 27 is pushed out toward the end of the support rod 25, thereby pushing the slide 42 to move the hemisphere 4 out of the arc frame 22, so that the sealing surface of the hemisphere 4 can fit with the inner wall of the liquid outlet of the valve body 1 to complete the sealing operation.

[0020] It is worth noting that, referring to Figure 5 As shown, the arc frame 22 is provided with a semicircular groove 24 at the part through which the pull rod 32 passes, and a push block 34 is welded to the pull rod 32 at the corresponding part of the groove 24. The end of the pull rod 32 is provided with a convex tooth 35, and the bottom inner side of the valve body 1 is provided with a locking groove corresponding to the convex tooth 35. The side surface of the slide 42 away from the sleeve rod 27 is provided with a top block 43, and the top of the push block 34 and the bottom of the top block 43 are provided with mutually matching chamfered angles. Normally, due to the presence of the reset spring 33, the pull rod 32 drives the push block 34 to insert into the groove 24, and the convex tooth 35 at the end of the pull rod 32 will be inserted into the locking groove on the inner side of the bottom of the valve body 1, limiting the rotation of the valve disc 2; When it is necessary to rotate the hemisphere 4 to switch the hemisphere valve, in order to avoid mechanical friction between the sealing surface of the hemisphere 4 and the inner wall of the valve body 1, it is necessary to lift the handle 3 to allow the convex tooth 35 at the end of the pull rod 32 to disengage from the locking groove of the valve body 1, and at the same time, the top block 43 rises to push the push block 34 to make the slide 42 slide inside the slide groove 23, and move the hemisphere 4 toward the arc frame 22. At this time, the hemisphere 4 is driven to rotate by the valve disc 2. After the adjustment is completed, the handle 3 is released, and the convex tooth 35 at the end of the pull rod 32 can be reinserted into the locking groove of the valve body 1 under the action of the reset spring 33 to lock it. At the same time, under the action of the sealing spring 26, the hemisphere 4 can be pushed out again in the direction away from the arc frame 22, thereby realizing the switching and flow adjustment operations of the eccentric hemisphere valve.

[0021] In this example, the above structure can be applied to both intelligent eccentric hemispherical valves and non-intelligent eccentric hemispherical valves, that is, a motor or electromagnetic telescopic machine is installed between the valve disc 2 and the valve body 1, and real-time control of the motor or electromagnetic telescopic machine is achieved through external PLC programming to complete the operation of rotating the valve disc 2.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent eccentric hemispherical valve, comprising a valve body, a valve disc and a hemispherical valve, characterized in that: The valve disc is connected to a valve stem extending into the interior of the valve body, one end of the valve stem located inside the valve body is connected to an arc frame, and the hemisphere is connected via the arc frame; The valve stem is also provided with a handle at one end outside the valve body, and the handle is connected to a pull rod extending to the inside of the valve body. The handle unlocks the rotation restriction of the hemisphere through the pull rod and adjusts the distance between the hemisphere and the arc frame.

2. The intelligent eccentric hemispherical valve according to claim 1, characterized in that: The valve stem is hollow, and a through groove is formed at the end of the valve stem; A connecting rod is connected between the two handles, and the connecting rod passes through the through slot. A return spring is also arranged on the inner wall of the end of the through slot, and the other end of the return spring contacts the middle of the handle.

3. The intelligent eccentric hemispherical valve according to claim 1, characterized in that: The arc frame is provided with a horizontally arranged slide groove at the through-portion of the pull rod, and a support rod is arranged on the inner wall of the slide groove on the side away from the arc surface of the arc frame. A telescopic sleeve rod is sleeved on the outside of the support rod, and a sealing spring is arranged between the support rod and the sleeve rod.

4. The intelligent eccentric hemispherical valve according to claim 3, characterized in that: Both ends of the hemisphere are provided with embedding grooves, the inner wall of the embedding groove is connected with a slide, the slide slides inside the slide groove, and the slide contacts the end of the sleeve rod.

5. The intelligent eccentric hemispherical valve according to claim 4, characterized in that: The arc frame is provided with a semicircular groove at the through-through portion of the pull rod, and a push block is welded to the corresponding position of the pull rod at the groove.

6. The intelligent eccentric hemispherical valve according to claim 5, characterized in that: The end of the pull rod is provided with a convex tooth, and the inner side of the bottom of the valve body is provided with a locking groove corresponding to the convex tooth.

7. The intelligent eccentric hemispherical valve according to claim 6, characterized in that: A top block is arranged on a surface of one side of the slide away from the sleeve rod, and mutually matching chamfered angles are arranged between the top of the push block and the bottom of the top block.

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