A detachable ball valve

Abstract

The utility model discloses a detachable rotary ball valve, comprising: a valve body, a valve plate, a valve seat, a valve stem, a valve cover and a bottom cover, wherein a flow channel for common medium circulation is arranged in the valve body, the valve plate is rotatably arranged in the valve body, and together with the valve seat also arranged in the valve body, forms a sealing pair, and the closing or circulation of the flow channel is controlled by rotating the valve plate, the valve stem penetrates the valve body, and the inner end of the valve stem is connected to the valve plate, and the valve cover and the bottom cover are respectively connected to the top and bottom of the valve body by fasteners; a hinge connection component is arranged between the bottom cover and the valve body, and the valve body is hinged to one side of the bottom cover. Through this arrangement, the bottom cover and the valve body are connected by a hinge connection, and the use of fasteners is reduced at the same time. On the one hand, the disassembly and assembly operation of the bottom cover during maintenance is convenient, thereby improving efficiency; on the other hand, the disassembled bottom cover is always connected to the valve body, and does not need to be stored additionally, thereby preventing loss.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a detachable rotary ball valve. Background Art

[0002] The rotary ball valve has the functions and advantages of butterfly valve, half ball valve, gate valve and stop valve, and has its own powerful functions and advantages that are completely different from others. It is small in size, light in weight, easy to transport, install, maintain and repair, and reliable in operation; the main feature of the rotary ball valve is that it can not only reliably shut off in positive pressure, but also in reverse pressure or reverse pressure much greater than positive pressure. It can automatically align the center and automatically compensate for wear by overtravel. When closing, it fully utilizes the energy of the medium in the rotary ball valve and automatically applies extremely high sealing pressure ratio, so that the high-hardness sealing pair can achieve reliable zero leakage. There is no friction between the sealing pair when closing and opening instantly. The main structure of the rotary ball valve is similar to that of the butterfly valve, and it has the characteristics of short structure and small size of the butterfly valve, so it can manufacture valves with extra-large and super-large diameters.

[0003] In the prior art, various types of rotary ball valves will produce residual dirt from the medium on the inner wall during long-term use, requiring necessary decontamination and maintenance. For example, the rotary ball valve mentioned in the utility model patent with application number CN202020620571.6 is maintained during use by removing the bottom cover and maintaining the inside of the valve body from the bottom of the valve body inward. During the disassembly process of the bottom cover, multiple fasteners need to be loosened, and the removed bottom cover needs to be properly kept, which is inconvenient to reinstall. Therefore, there is room for improvement. Summary of the invention

[0004] In view of the above problems, the present application proposes a detachable rotating ball valve, which connects the bottom cover and the valve body through a hinge connection and reduces the use of fasteners. On the one hand, it is convenient to disassemble and assemble the bottom cover during maintenance, thereby improving efficiency. On the other hand, the disassembled bottom cover is always connected to the valve body, and does not need to be stored separately, thereby preventing loss. The detachable rotating ball valve is specifically implemented by the following technical solutions:

[0005] A detachable rotary ball valve comprises: a valve body, a valve plate, a valve seat, a valve stem, a valve cover and a bottom cover, wherein a flow channel for common medium circulation is arranged in the valve body, the valve plate is rotatably arranged in the valve body, and together with the valve seat also arranged in the valve body, a sealing pair is formed, and the closure or circulation of the flow channel is controlled by rotating the valve plate, the valve stem passes through the valve body, and the inner end of the valve stem is connected to the valve plate, the valve cover and the bottom cover are respectively connected to the top and bottom of the valve body by fasteners; a hinge connection component is arranged between the bottom cover and the valve body, and the valve body is hinged to one side of the bottom cover.

[0006] It is further configured that the hinge connection assembly includes a locking screw, a concave mounting block and a convex mounting block, the concave mounting block is arranged on the valve body, the convex mounting block is arranged on the bottom cover, the convex portion of the convex mounting block is inserted into the concave portion of the concave mounting block, and the locking screw simultaneously passes through the convex portion of the convex mounting block and the concave portion of the concave mounting block. Through this configuration, the bottom cover and the valve body are hingedly connected and will not completely detach, thereby improving the installation efficiency.

[0007] It is further configured that a mounting hole is provided at one end of the bottom cover away from the convex mounting block, and a threaded hole is provided on the valve body corresponding to the mounting hole, and the valve body and the bottom cover are connected by installing screws between the mounting hole and the threaded hole. Through this configuration, under the premise of hinge connection, the bottom cover and the valve body can be tightly connected through simple screw connection, thereby improving the overall stability.

[0008] It is further arranged that a sealing gasket is arranged at the inner end of the bottom cover. Through this arrangement, the sealing performance between the bottom cover and the valve body is enhanced, and the overall sealing performance is improved.

[0009] It is further provided that a limiting groove is provided at the inner end of the bottom cover. Through this provision, it is convenient to position the lower end of the valve stem, and the overall stability is higher.

[0010] It is further configured that the valve stem includes an upper valve stem and a lower valve stem, the upper valve stem passes through the valve cover and is connected to the valve plate, the inner end of the lower valve stem is connected to the valve plate, and the outer end is arranged in the limiting groove. Through this configuration, the position of the valve stem is more stable, making the overall structure more stable.

[0011] It is further configured that a first annular groove is provided at the outer end of the lower valve stem, and a second annular groove is provided on the valve body corresponding to the first annular groove, and support rings are provided in the first annular groove and the second annular groove. Through this configuration, a support ring is provided to further stabilize the position of the valve stem and prevent a decrease in sealing performance caused by loosening of the valve stem position.

[0012] It is further arranged that a packing is arranged on the periphery of the valve stem. Through this arrangement, the position of the valve stem is further stabilized to prevent the sealing performance from being reduced due to the loosening of the valve stem position.

[0013] In summary, the detachable rotary ball valve connects the bottom cover and the valve body through a hinge, while reducing the use of fasteners. On the one hand, it is convenient to disassemble and assemble the bottom cover during maintenance to improve efficiency. On the other hand, the disassembled bottom cover is always connected to the valve body and does not need to be stored separately to prevent loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 Front cross-sectional view of the detachable rotating ball valve provided in the embodiment of the present application Figure 1 ;

[0016] Figure 2 Front cross-sectional view of the detachable rotating ball valve provided in the embodiment of the present application Figure 2 ;

[0017] Figure 3 The detachable ball valve provided in the embodiment of the present application Figure 2 Enlarged view of part A in the middle;

[0018] Figure 4 A left side view of a detachable rotary ball valve provided in an embodiment of the present application.

[0019] Among them, the reference numerals in the figure are:

[0020] 1. Valve body; 2. Valve plate; 3. Valve seat; 4. Valve stem; 5. Valve cover; 6. Bottom cover; 7. Flow channel; 8. Hinge connection assembly; 9. Locking screw; 10. Concave mounting block; 11. Convex mounting block; 12. Mounting hole; 13. Threaded hole; 14. Screw; 15. Sealing gasket; 16. Limiting groove; 17. Upper valve stem; 18. Lower valve stem; 19. First annular groove; 20. Second annular groove; 21. Support ring; 22. Packing. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application 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 application and are not used to limit the present application.

[0022] The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] The present application is further described with reference to the accompanying drawings and specific implementation methods:

[0024] Please also read Figures 1 to 4A detachable rotary ball valve comprises: a valve body 1, a valve plate 2, a valve seat 3, a valve stem 4, a valve cover 5 and a bottom cover 6. A flow channel 7 for common medium circulation is arranged in the valve body 1. The valve plate 2 is rotatably arranged in the valve body 1, and together with the valve seat 3 also arranged in the valve body 1, it forms a sealing pair. The closing or circulation of the flow channel 7 is controlled by rotating the valve plate 2. The valve stem 4 passes through the valve body 1, and the inner end of the valve stem 4 is connected to the valve plate 2. The valve cover 5 and the bottom cover 6 are respectively connected to the top and bottom of the valve body 1 by fasteners; a hinge connection component 8 is arranged between the bottom cover 6 and the valve body 1, and the valve body 1 is hinged to one side of the bottom cover 6.

[0025] See also Figures 1 to 4 In this embodiment, the hinge assembly 8 includes a locking screw 9, a concave mounting block 10 and a convex mounting block 11. The concave mounting block 10 is arranged on the valve body 1, and the convex mounting block 11 is arranged on the bottom cover 6. The convex portion of the convex mounting block is inserted into the concave portion of the concave mounting block, and the locking screw 9 simultaneously penetrates the convex portion of the convex mounting block and the concave portion of the concave mounting block. In this way, a hinge connection is formed between the bottom cover 6 and the valve body 1. Compared with the traditional bottom cover 6, when the bottom cover 6 is opened, the bottom cover 6 The cover 6 will not be completely separated from the valve body 1, and at the same time, the bottom cover 6 can be opened for maintenance; the bottom cover 6 is provided with a mounting hole 12 at one end away from the convex mounting block 11, and the valve body 1 is provided with a threaded hole 13 corresponding to the mounting hole 12, and the valve body 1 and the bottom cover 6 are connected by installing a screw 14 between the mounting hole 12 and the threaded hole 13; the inner end of the bottom cover 6 is provided with a sealing gasket 15, so that, under the condition of ensuring the above-mentioned hinge connection, the bottom cover 6 must be kept in the normal working state of the valve. The valve bodies 1 are tightly fixed, so mounting holes 12 and threaded holes 13 are provided, and tight connection is achieved through screws 14 to ensure the use strength of the valve of the utility model; a limiting groove 16 is provided at the inner end of the bottom cover 6; the valve stem 4 includes an upper valve stem 17 and a lower valve stem 18, the upper valve stem 17 passes through the valve cover 5 and is connected to the valve plate 2, the inner end of the lower valve stem 18 is connected to the valve plate 2, and the outer end is provided in the limiting groove 16, so that the valve stem 4 is limited in the limiting groove 16, which can well control the horizontal displacement of the valve stem 4. Limiting to prevent the valve stem 4 from dislocating; the outer end of the lower valve stem 18 is provided with a first annular groove 19, and the valve body 1 is provided with a second annular groove 20 corresponding to the first annular groove 19, and the first annular groove 19 and the second annular groove 20 are provided with support rings 21. The setting of the support ring 21 further limits the axial displacement of the valve stem 4 to prevent the axial displacement of the valve stem 4 from being too large, resulting in a deterioration in the sealing effect between the valve plate 2 and the valve seat 3; the outer periphery of the valve stem 4 is provided with a packing 22, and the setting of the packing 22 belongs to conventional operation and will not be elaborated in detail.

[0026] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A detachable ball valve, comprising: A valve body (1), a valve plate (2), a valve seat (3), a valve stem (4), a valve cover (5) and a bottom cover (6); the valve body (1) is provided with a flow channel (7) for medium circulation; the valve plate (2) is rotatably arranged in the valve body (1) and together with the valve seat (3) also arranged in the valve body (1) forms a sealing pair; the closure or circulation of the flow channel (7) is controlled by rotating the valve plate (2); the valve stem (4) passes through the valve body (1), and the inner end of the valve stem (4) is connected to the valve plate (2); the valve cover (5) and the bottom cover (6) are respectively connected to the top and bottom of the valve body (1) by fasteners; The invention is characterized in that: a hinge assembly (8) is arranged between the bottom cover (6) and the valve body (1), and the valve body (1) is hingedly connected to one side of the bottom cover (6); the hinge assembly (8) comprises a locking screw (9), a concave mounting block (10) and a convex mounting block (11), the convex mounting block (11) is arranged on the valve body (1), the concave mounting block (10) is arranged on the bottom cover (6), the convex part of the convex mounting block (11) is inserted into the concave part of the concave mounting block (10), and the locking screw (9) simultaneously passes through the convex part of the convex mounting block (11) and the concave part of the concave mounting block (10).

2. A detachable ball valve according to claim 1, characterized in that The bottom cover (6) is provided with a mounting hole (12) at one end away from the convex mounting block (11), the valve body (1) is provided with a threaded hole (13) corresponding to the mounting hole (12), and the valve body (1) and the bottom cover (6) are connected by means of screws (14) provided between the mounting hole (12) and the threaded hole (13).

3. A detachable ball valve according to claim 1, characterized in that A sealing gasket (15) is provided at the inner end of the bottom cover (6).

4. A detachable ball valve according to claim 1, characterized in that A limiting groove (16) is provided at the inner end of the bottom cover (6).

5. A detachable ball valve according to claim 4, characterized in that The valve stem (4) comprises an upper valve stem (17) and a lower valve stem (18); the upper valve stem (17) passes through the valve cover (5) and is connected to the valve plate (2); the inner end of the lower valve stem (18) is connected to the valve plate (2), and the outer end is arranged in the limiting groove (16).

6. A detachable ball valve according to claim 5, characterized in that The outer end of the lower valve stem (18) is provided with a first annular groove (19), and the valve body (1) is provided with a second annular groove (20) corresponding to the first annular groove (19), and support rings (21) are provided in the first annular groove (19) and the second annular groove (20).

7. A detachable ball valve according to claim 1, characterized in that A packing (22) is arranged on the outer periphery of the valve stem (4).

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