Nut connection energy storage double-seal ball valve

Abstract

The utility model provides a nut connection energy storage double-seal ball valve which comprises a connector and a ball valve body, and the right end of the connector is fixedly connected with the left end of the ball valve body. The space between the outer wall of the butt joint and the inner wall of the butt joint groove is sealed to form a first seal, and the first seal is matched with a sealing gasket to form a second seal, so that the connection sealing performance between the pipe body and the valve shell is greatly improved, a movable nut and a clamping spring are arranged, and a movable groove is formed in the inner wall of the right end of the movable nut and matched with a limiting sliding groove in the left end of the valve shell; the installation convenience of the connector and the movable nut is greatly improved, the sealing gasket and the sealing ring are matched, high-sealing connection can be achieved without high-precision positioning installation, and therefore the installation efficiency can be improved while the installation difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of double-sealed ball valves, and particularly relates to a nut-connected energy-storage double-sealed ball valve. Background Technique

[0002] The existing double-sealed ball valves have disadvantages in terms of convenient installation, mainly focusing on high installation complexity and alignment requirements. Such valves are designed precisely and have many components, such as sealing rings, valve stems, and spheres, resulting in time-consuming and laborious on-site assembly. During installation, precise alignment of the pipeline interfaces is required, and any slight deviation may affect the sealing performance and increase the risk of water leakage.

[0003] To address these challenges, common practices include providing detailed installation instruction manuals, video tutorials, and dispatching technical personnel for on-site support. However, relying on a large amount of paper or digital materials increases the learning burden on installation workers, and unexpected situations may still occur during actual operation. Although on-site technical support can effectively solve problems, it has a long response time, high costs, and is difficult to implement in remote areas. Therefore, we hope to design a double-sealed ball valve with a new structure to solve this problem. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a nut-connected energy-storage double-sealed ball valve to solve the problems raised in the above background technique.

[0005] The utility model is realized through the following technical solutions: A nut-connected energy-storage double-sealed ball valve, comprising: a joint and a ball valve body. The right end of the joint is fixedly connected to the left end of the ball valve body. The joint includes a pipe body, a sealing gasket, and a sealing ring. The right end of the pipe body is movably sleeved with the sealing gasket, and the outer wall of the right end of the pipe body is movably clamped with the sealing ring;

[0006] The ball valve body includes a valve housing, a handle, a connecting sleeve, and a movable nut. A valve body is rotatably installed inside the valve housing. A connecting sleeve is fixed in the middle of the upper end of the valve housing, and a valve stem is rotatably installed above the connecting sleeve;

[0007] The upper end of the valve stem is fixed with the handle, the lower end of the valve stem extends downward into the valve housing and is fixedly connected to the upper end of the valve body. The left end of the valve housing is movably installed with the movable nut through a circlip.

[0008] As a preferred embodiment, the right end of the pipe body is provided with an insertion end. The diameter of the insertion end is smaller than the diameter of the left part of the pipe body, and the inner diameter of the insertion end is the same as the inner diameter of the left part of the pipe body. The outer wall of the left side of the insertion end is provided with an external thread.

[0009] As a preferred embodiment, an internal thread is provided on the inner wall of the movable nut. The left side of the movable nut is threadedly connected to the right end of the pipe body through the internal thread and the external thread. A docking head is provided on the right side of the insertion end.

[0010] As a preferred embodiment, two annular grooves are formed by radially inward depression on the outer wall of the docking head. A sealing ring is movably clamped inside each annular groove. The radial thickness of the sealing ring is greater than the radial depth of the annular groove. The arrangement of the two sealing rings and a sealing gasket can better seal the connection between the right end of the pipe body and the left end of the valve housing, making it have a high connection sealing performance.

[0011] As a preferred embodiment, a docking groove is formed by opening towards the right on the left end of the valve housing. The depth of the docking groove is less than the length of the docking head, and the inner diameter of the docking groove matches the diameter of the docking head. A sealing gasket is movably clamped between the right end face of the insertion end and the left end face of the valve housing. The sealing gasket is movably sleeved on the outer wall of the left end of the docking head.

[0012] As a preferred embodiment, a limiting sliding groove is formed by radially inward depression on the outer wall of the left end of the valve housing. An inclined surface is provided between the leftmost end and the rightmost end of the limiting sliding groove. The inclined surface has a structure with the left side higher than the right side. The depth of the leftmost end of the limiting sliding groove is less than the depth of the rightmost end. The snap ring is movably clamped inside the limiting sliding groove;

[0013] An activity groove is formed by radially outward depression on the inner wall of the right end of the movable nut. The cross-section of the right end of the activity groove is in a circular arc structure. The inner side of the snap ring is clamped inside the limiting sliding groove, and the upper end of the snap ring is movably clamped inside the activity groove.

[0014] As a preferred embodiment, a positioning groove is formed by radially inward opening on the right rear side of the upper end of the connecting sleeve. A positioning block is provided on the directly rear side of the handle. The lower end of the positioning block is placed inside the positioning groove. The positioning groove is a quarter-circle sector groove. The cooperation of the positioning groove and the positioning block can facilitate the user to know the final points of the switch.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: When it is necessary to connect the joint with the ball valve body, first insert the insertion end at the right end of the pipe body into the movable nut. At this time, the right end of the joint enters the left end inside the docking groove. Subsequently, fix the pipe body and rotate the movable nut, or fix the movable nut and rotate the pipe body, both of which can make the external thread on the outer wall of the insertion end engage with the internal thread on the inner wall of the movable nut. After the external thread and the internal thread are screwed together, the right end of the joint enters the docking groove. The gasket located at the left end of the joint abuts against the left end face of the valve housing and deforms, sealing the space between the right end face of the insertion end and the left end face of the valve housing. At the same time, after the joint is inserted into the docking groove, since the radial thickness of the sealing ring is greater than the radial depth of the ring groove, the two sealing rings deform synchronously, sealing the space between the outer wall of the joint and the inner wall of the docking groove, forming a first seal, and cooperating with the second seal formed by the gasket, greatly improving the connection tightness between the pipe body and the valve housing;

[0016] The setting of the movable nut and the circlip. By providing an activity groove on the inner wall at the right end of the movable nut and cooperating with the limit sliding groove at the left end of the valve housing, the movable nut can slide a short distance at the left end of the valve housing. However, under the action of the circlip, the movable nut will not be disconnected from the left end of the valve housing. This enables the movable nut to have the functions of rotation and short-distance left-right sliding at the left end of the valve housing, greatly improving the installation convenience of the joint and the movable nut. Cooperating with the gasket and the sealing ring, high-seal connection can be achieved without high-precision positioning installation, which helps to improve the installation efficiency and reduce the installation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of a nut-connected energy storage double-sealed ball valve of the present utility model.

[0019] Figure 2 It is a schematic diagram of the connection between the positioning groove and the positioning block of a nut-connected energy storage double-sealed ball valve of the present utility model.

[0020] Figure 3 It is a schematic diagram of the sectional structure of a nut-connected energy storage double-sealed ball valve of the present utility model.

[0021] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0022] Figure 5 This is a schematic diagram of the joint structure of a nut-connected energy storage double-sealed ball valve of the present utility model.

[0023] In the figure, 100 - joint, 110 - pipe body, 111 - annular groove, 112 - external thread, 120 - gasket, 130 - sealing ring;

[0024] 200 - ball valve body, 210 - valve housing, 211 - limit chute, 212 - docking groove, 220 - handle, 221 - positioning block, 230 - connecting sleeve, 231 - positioning groove, 240 - movable nut, 250 - valve body, 260 - circlip. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0026] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: a nut-connected energy storage double-sealed ball valve, including: joint 100, ball valve body 200. The right end of joint 100 is fixedly connected to the left end of ball valve body 200. Joint 100 includes pipe body 110, gasket 120 and sealing ring 130. The right end of pipe body 110 is movably sleeved with gasket 120, and the outer wall of the right end of pipe body 110 is movably clamped with sealing ring 130;

[0027] Ball valve body 200 includes valve housing 210, handle 220, connecting sleeve 230 and movable nut 240. Valve body 250 is rotatably installed inside valve housing 210. A connecting sleeve 230 is fixedly installed in the middle of the upper end of valve housing 210, and a valve rod is rotatably installed on the upper side of connecting sleeve 230;

[0028] The upper end of the valve rod is fixedly connected to handle 220. The lower end of the valve rod extends downward into the inside of valve housing 210 and is fixedly connected to the upper end of valve body 250. The left end of valve housing 210 is movably installed with movable nut 240 through circlip 260.

[0029] Please refer to Figures 1 to 5 , the right end of pipe body 110 is provided with an insertion end. The diameter of the insertion end is smaller than the diameter of the left part of pipe body 110, and the inner diameter of the insertion end is the same as the inner diameter of the left part of pipe body 110. The outer wall of the left side of the insertion end is provided with external thread 112.

[0030] The inner wall of the movable nut 240 is provided with internal threads. The left side of the movable nut 240 is threadedly connected to the right end of the pipe body 110 through the internal threads and external threads 112. A docking head 100 is provided on the right side of the insertion end.

[0031] Two annular grooves 111 are radially recessed inwardly on the outer wall of the docking head 100. A sealing ring 130 is movably clamped inside each annular groove 111. The radial thickness of the sealing ring 130 is greater than the radial depth of the annular groove 111. The arrangement of the two sealing rings 130 and a sealing gasket 120 can better seal the connection between the right end of the pipe body 110 and the left end of the valve housing 210, making it have higher connection tightness.

[0032] A docking groove 212 is opened rightward at the left end of the valve housing 210. The depth of the docking groove 212 is less than the length of the docking head 100, and the inner diameter of the docking groove 212 matches the diameter of the docking head 100. A sealing gasket 120 is movably clamped between the right end face of the insertion end and the left end face of the valve housing 210. The sealing gasket 120 is movably sleeved on the outer wall of the left end of the docking head 100.

[0033] As the first embodiment of the present utility model, in actual use, when it is necessary to connect the joint 100 to the ball valve body 200, first insert the insertion end at the right end of the pipe body 110 into the movable nut 240. At this time, the right end of the docking head 100 enters the left end inside of the docking groove 212. Subsequently, fix the pipe body 110 and rotate the movable nut 240, or fix the movable nut 240 and rotate the pipe body 110, both of which can make the external threads 112 on the outer wall of the insertion end be screwed with the internal threads on the inner wall of the movable nut 240. After the external threads 112 and the internal threads are screwed together, the right end of the docking head 100 enters the docking groove 212. The sealing gasket 120 located at the left end of the docking head 100 abuts against the left end face of the valve housing 210 and deforms, sealing the space between the right end face of the insertion end and the left end face of the valve housing 210. At the same time, after the docking head 100 is inserted into the docking groove 212, since the radial thickness of the sealing ring 130 is greater than the radial depth of the annular groove 111, this causes the two sealing rings 130 to deform synchronously, sealing the space between the outer wall of the docking head 100 and the inner wall of the docking groove 212 to form the first seal, and cooperating with the second seal formed by the sealing gasket 120, greatly improving the connection tightness between the pipe body 110 and the valve housing 210.

[0034] Please refer to Figures 1 to 4 , a limiting chute 211 is radially recessed inwardly on the outer wall of the left end of the valve housing 210. An inclined surface is provided between the leftmost end and the rightmost end of the limiting chute 211. The inclined surface is in a structure with the left side being higher than the right side. The depth of the leftmost end of the limiting chute 211 is less than the depth of the rightmost end. A snap ring 260 is movably clamped inside the limiting chute 211;

[0035] The inner wall of the right end of the movable nut 240 is radially recessed outward to form a movable groove. The cross-section of the right end of the movable groove is in an arc structure. The inner side of the snap ring 260 is clamped inside the limit chute 211, and the upper end of the snap ring 260 is movably clamped inside the movable groove.

[0036] A positioning groove 231 is radially inwardly formed at the right rear side of the upper end of the connecting sleeve 230. A positioning block 221 is provided on the directly rear side of the handle 220. The lower end of the positioning block 221 is placed inside the positioning groove 231. The positioning groove 231 is a quarter-circular sector groove. The positioning groove 231 cooperates with the positioning block 221, which can facilitate the user to know the final point of the switch.

[0037] As the second embodiment of the present invention, based on the above first embodiment, the setting of the movable nut 240 and the snap ring 260. By providing a movable groove on the inner wall of the right end of the movable nut 240 and cooperating with the limit chute 211 at the left end of the valve housing 210, in actual use, the movable nut 240 can slide a short distance at the left end of the valve housing 210. However, under the action of the snap ring 260, the movable nut 240 will not be disconnected from the left end of the valve housing 210. This enables the movable nut 240 to have the functions of rotation and short-distance left-right sliding at the left end of the valve housing 210, greatly improving the installation convenience of the joint 100 and the movable nut 240. Cooperating with the gasket 120 and the sealing ring 130, high-sealing connection can be achieved without high-precision positioning installation, which helps to improve the installation efficiency and reduce the installation difficulty.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nut-connected energy storage double-sealed ball valve, comprising: A joint (100) and a ball valve body (200), characterized in that the right end of the joint (100) is fixedly connected to the left end of the ball valve body (200), the joint (100) comprises a tube body (110), a sealing gasket (120) and a sealing ring (130), the right end of the tube body (110) is movably sleeved with the sealing gasket (120), and the outer wall of the right end of the tube body (110) is movably clamped with the sealing ring (130); The ball valve body (200) comprises a valve housing (210), a handle (220), a connecting sleeve (230) and a movable nut (240); a valve body (250) is rotatably mounted inside the valve housing (210); a connecting sleeve (230) is fixed in the middle of the upper end of the valve housing (210); and a valve stem is rotatably mounted on the upper side of the connecting sleeve (230); A handle (220) is fixed to the upper end of the valve stem, the lower end of the valve stem extends downward into the interior of the valve housing (210) and is fixedly connected to the upper end of the valve body (250), and a movable nut (240) is movably mounted on the left end of the valve housing (210) via a retaining spring (260).

2. A nut-connected energy storage double-sealed ball valve as claimed in claim 1, characterized in that: The right end of the tube body (110) is provided with an insertion end, the diameter of the insertion end is smaller than the diameter of the left part of the tube body (110), and the inner diameter of the insertion end is the same as the inner diameter of the left part of the tube body (110), and the left outer wall of the insertion end is provided with an external thread (112).

3. A nut-connected energy-storage double-sealed ball valve as claimed in claim 2, characterized in that: The inner wall of the movable nut (240) is provided with an internal thread, the left side of the movable nut (240) is threadedly connected to the right end of the tube body (110) through the internal thread and the external thread (112), and the right side of the insertion end is provided with a docking joint (100).

4. A nut-connected energy-storage double-sealed ball valve as claimed in claim 3, characterized in that: The outer wall of the butt joint (100) is recessed radially inward to form two annular grooves (111), and a sealing ring (130) is movably mounted inside each of the annular grooves (111). The radial thickness of the sealing ring (130) is greater than the radial depth of the annular groove (111).

5. A nut-connected energy-storage double-sealed ball valve as claimed in claim 4, characterized in that: A docking groove (212) is provided at the left end of the valve housing (210) to the right, the depth of the docking groove (212) is less than the length of the docking head (100), and the inner diameter of the docking groove (212) matches the diameter of the docking head (100), a sealing gasket (120) is movably mounted between the right end surface of the insertion end and the left end surface of the valve housing (210), and the sealing gasket (120) is movably mounted on the outer wall of the left end of the docking head (100).

6. A nut-connected energy-storage double-sealed ball valve as claimed in claim 5, characterized in that: The outer wall of the left end of the valve housing (210) is radially recessed inward to form a limiting sliding groove (211); an inclined surface is provided between the leftmost end and the rightmost end of the limiting sliding groove (211); the inclined surface is in a structure of being higher on the left and lower on the right; the depth of the leftmost end of the limiting sliding groove (211) is less than the depth of the rightmost end; and the retaining spring (260) is movably mounted inside the limiting sliding groove (211); The inner wall of the right end of the movable nut (240) is radially recessed outward to form a movable groove, and the cross-section of the right end of the movable groove is an arc-shaped structure. The inner side of the retaining spring (260) is clamped inside the limiting sliding groove (211), and the upper end of the retaining spring (260) is movably clamped inside the movable groove.

7. A nut-connected energy-storage double-sealed ball valve as claimed in claim 1, characterized in that: A positioning groove (231) is radially inwardly provided on the right rear side of the upper end of the connecting sleeve (230), and a positioning block (221) is provided on the rear side of the handle (220). The lower end of the positioning block (221) is placed inside the positioning groove (231), and the positioning groove (231) is a quarter-circular fan-shaped groove.

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