Manual ball valve

Abstract

The manual ball valve comprises a main body, a fine adjustment mechanism, an opening indicating piece and a locking assembly, the main body comprises a valve seat, a ball body is rotationally arranged on the inner side of the valve seat, a valve rod is fixedly connected to the top of the ball body, the valve rod is rotationally connected with the valve seat in a sealed mode and penetrates through the valve seat, and a wrench is fixedly connected to the top of the valve rod. The mounting shell is fixedly connected to the top of the valve seat and located below the wrench, a through hole is formed in the position, right opposite to the valve rod, of the mounting shell, and the valve rod penetrates through the mounting shell through the through hole. The pointer capable of reflecting the current opening degree of the device is matched, the opening degree adjusting precision of the device is improved, the locking assembly is arranged so that the device can abut against the valve rod through the locking screw, and it is guaranteed that the opening degree of the device can be stably kept for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a manual ball valve. Background Art

[0002] A manual ball valve is a common type of valve. Its closing member is a sphere, which rotates around the center line of the valve body to achieve opening or closing. Manual ball valves are mainly used to cut off or connect media, and can also be used for fluid regulation and control.

[0003] Traditional manual ball valves rely on a wrench to directly operate the valve stem to control its opening degree. However, this control method has obvious deficiencies: on the one hand, it is difficult to achieve precise adjustment of the opening degree of the ball valve; on the other hand, even if the opening degree is adjusted, it is impossible to ensure that the ball valve can be stably maintained at this opening degree for a long time. These defects limit the application of manual ball valves in occasions that require high-precision and stability control. In view of this, a manual ball valve is proposed. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the application, to avoid obscuring the purpose of this part, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the above problems of a manual ball valve, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a manual ball valve, which is used to solve the problems that traditional manual ball valves cannot precisely adjust the opening degree and cannot ensure that the ball valve can stably maintain the opening degree for a long time.

[0007] To solve the above technical problems, the present utility model provides the following technical solutions: A manual ball valve, comprising:

[0008] A main body, which includes a valve seat. A sphere is rotatably arranged inside the valve seat. A valve stem is fixedly connected to the top of the sphere. The valve stem is hermetically and rotatably connected to the valve seat and penetrates through the valve seat. A wrench is fixedly connected to the top of the valve stem;

[0009] A fine-tuning mechanism, which includes a mounting housing. The mounting housing is fixedly connected to the top of the valve seat and is located below the wrench. A through hole is provided in the mounting housing at a position facing the valve stem. The valve stem passes through the mounting housing through this through hole. A first bevel gear and a second bevel gear with a rotating shaft are arranged inside the mounting housing. The first bevel gear is fixedly sleeved outside the valve stem. The rotating shaft of the second bevel gear is rotatably connected to the mounting housing and penetrates through the mounting housing. The second bevel gear meshes with the first bevel gear;

[0010] The valve stem is also provided with an opening degree indicating member for indicating the opening degree of the sphere and a locking assembly for locking the valve stem. The transmission ratio of the secondary bevel gear to the primary bevel gear is 4:1.

[0011] As a preferred solution of the manual ball valve of the present invention, the opening degree indicating member includes a pointer. The pointer is arranged between the mounting housing and the wrench and is fixedly connected to the valve stem. An indicating scale for reflecting the opening degree of the sphere is provided at the top of the mounting housing, and the scale pointed by the pointer is the current opening degree of the sphere.

[0012] As a preferred solution of the manual ball valve of the present invention, the locking assembly includes a locking screw. A threaded hole matching the locking screw is provided on the side wall of the mounting housing. The locking screw is threadedly connected to the mounting housing through this threaded hole, and the locking screw abuts against the valve stem after passing through the threaded hole.

[0013] As a preferred solution of the manual ball valve of the present invention, the locking assembly further includes a knob cap. The knob cap is fixedly connected to the end of the locking screw away from the valve stem.

[0014] As a preferred solution of the manual ball valve of the present invention, the knob cap is arranged coaxially with the locking screw, and the outer side of the knob cap has anti-slip threads.

[0015] As a preferred solution of the manual ball valve of the present invention, the fine adjustment mechanism further includes a turntable. The turntable is arranged outside the mounting housing and is fixedly connected to the end of the rotating shaft of the secondary bevel gear.

[0016] The beneficial effects of the present invention: By providing the fine adjustment mechanism, the device can indirectly rotate the valve stem by rotating the turntable. The rotation amplitude of the valve stem is 1 / 4 of that of the turntable. Cooperating with the pointer that can reflect the current opening degree of the device, the accuracy of the opening degree adjustment of the device is improved. Also, by providing the locking assembly, the device can use the locking screw to abut against the valve stem to ensure that the device can stably maintain the opening degree for a long time. Compared with the traditional manual ball valve, the adjustment accuracy is higher and the stability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a manual ball valve of the present invention.

[0019] Figure 2 For the present utility model Figure 1 is an enlarged view of the structure of area A in the present utility model.

[0020] Figure 3 is a schematic perspective sectional view of the installation housing position of a manual ball valve of the present utility model.

[0021] Figure 4 is a schematic partial sectional view of a manual ball valve of the present utility model.

[0022] Description of the drawings: 100, main body; 101, valve seat; 102, ball; 103, valve stem; 104, wrench; 200, fine adjustment mechanism; 201, installation housing; 202, first-stage bevel gear; 203, second-stage bevel gear; 204, turntable; 300, opening indicator; 301, pointer; 400, locking assembly; 401, locking screw; 402, knob cap. Detailed implementation manners

[0023] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings of the specification.

[0024] In the following description, many specific details are set forth to facilitate a thorough understanding of the present utility model. However, the present utility model may be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0025] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that may be included in at least one implementation manner of the present utility model. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0026] Furthermore, the present utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the sake of clarity, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0027] Referring to Figures 1-4 , for an embodiment of the present utility model, a manual ball valve is provided, which includes:

[0028] The main body 100 includes a valve seat 101, a sphere 102 is rotatably arranged inside the valve seat 101, a valve stem 103 is fixedly connected to the top of the sphere 102, the valve stem 103 is hermetically and rotatably connected to the valve seat 101 and penetrates through the valve seat 101, and a wrench 104 is fixedly connected to the top of the valve stem 103;

[0029] The fine-tuning mechanism 200 includes a mounting housing 201, the mounting housing 201 is fixedly connected to the top of the valve seat 101 and is located below the wrench 104, a through hole is provided at a position of the mounting housing 201 facing the valve stem 103, the valve stem 103 passes through the mounting housing 201 through this through hole, a first-stage bevel gear 202 and a second-stage bevel gear 203 with a rotating shaft are arranged inside the mounting housing 201, the first-stage bevel gear 202 is fixedly sleeved outside the valve stem 103, the rotating shaft of the second-stage bevel gear 203 is rotatably connected to the mounting housing 201 and penetrates through the mounting housing 201, and the second-stage bevel gear 203 meshes with the first-stage bevel gear 202;

[0030] The valve stem 103 is also equipped with an opening degree indicating member 300 for indicating the opening degree of the sphere 102 and a locking assembly 400 for locking the valve stem 103. The transmission ratio of the second-stage bevel gear 203 to the first-stage bevel gear 202 is 4:1. The opening degree indicating member 300 includes a pointer 301, the pointer 301 is arranged between the mounting housing 201 and the wrench 104 and is fixedly connected to the valve stem 103. An indicating scale for reflecting the opening degree of the sphere 102 is provided at the top of the mounting housing 201. The scale pointed by the pointer 301 is the current opening degree of the sphere 102. The locking assembly 400 includes a locking screw 401. A threaded hole matching the locking screw 401 is provided on the side wall of the mounting housing 201. The locking screw 401 is threadedly connected to the mounting housing 201 through this threaded hole, and the locking screw 401 abuts against the valve stem 103 after passing through the threaded hole.

[0031] Among them, the locking assembly 400 further includes a knob cap 402, the knob cap 402 is fixedly connected to the end of the locking screw 401 away from the valve stem 103. The knob cap 402 is used to facilitate the rotation of the locking screw 401. The knob cap 402 is arranged coaxially with the axis of the locking screw 401 to facilitate the rotation of 402. The outer side of the knob cap 402 has anti-slip threads to prevent slipping when rotating 402.

[0032] It should be noted that the fine-tuning mechanism 200 further includes a turntable 204. The turntable 204 is arranged outside the mounting housing 201 and is fixedly connected to the end of the rotating shaft of the second-stage bevel gear 203. The turntable 204 is used to facilitate the rotation of the second-stage bevel gear 203 and improve the usability of the device.

[0033] Working principle: By externally rotating the locking screw 401 with the button cap 402, the locking screw 401 no longer presses against the valve stem 103. At this time, the valve stem 103 can rotate. Rotate the wrench 104, and the wrench 104 drives the valve stem 103 to rotate. The valve stem 103 drives the sphere 102 to rotate, thereby adjusting the opening degree of the device. When the valve stem 103 rotates, it drives the pointer 301 to rotate. The current opening degree of the device can be judged by observing the scale pointed to by the pointer 301. When more precise adjustment is required, rotate the turntable 204. The turntable 204 drives the secondary bevel gear 203 to rotate. The secondary bevel gear 203 drives the primary bevel gear 202 to rotate. The primary bevel gear 202 drives the valve stem 103 to rotate, thereby adjusting the opening degree of the device. Since the transmission ratio of the secondary bevel gear 203 to the primary bevel gear 202 is 4:1, the rotation amplitude of the primary bevel gear 202 is 1 / 4 of that of the secondary bevel gear 203. Therefore, the opening degree of the device can be controlled more precisely. After the adjustment is completed, rotate the button cap 402 inward and tighten the locking screw 401. At this time, the locking screw 401 presses against the valve stem 103, and the state of the valve stem 103 can be maintained to ensure the stability of the opening degree of the device.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A manual ball valve, characterized in that: include: A main body (100) comprises a valve seat (101), a ball (102) is rotatably arranged inside the valve seat (101), a valve stem (103) is fixedly connected to the top of the ball (102), the valve stem (103) is tightly rotatably connected to the valve seat (101) and penetrates the valve seat (101), and a wrench (104) is fixedly connected to the top of the valve stem (103); A fine-tuning mechanism (200), comprising a mounting shell (201), wherein the mounting shell (201) is fixedly connected to the top of the valve seat (101) and is located below the wrench (104); a through hole is provided in the mounting shell (201) at a position directly opposite to the valve stem (103); the valve stem (103) passes through the mounting shell (201) through the through hole; a primary bevel gear (202) and a secondary bevel gear (203) with a rotating shaft are provided in the mounting shell (201); the primary bevel gear (202) is fixedly sleeved on the outside of the valve stem (103); the rotating shaft of the secondary bevel gear (203) is rotatably connected to the mounting shell (201) and passes through the mounting shell (201); the secondary bevel gear (203) and the primary bevel gear (202) are meshed with each other; The valve stem (103) is also equipped with an opening indicator (300) for indicating the opening of the ball (102) and a locking assembly (400) for locking the valve stem (103). The transmission ratio between the secondary bevel gear (203) and the primary bevel gear (202) is 4:

1.

2. A manual ball valve according to claim 1, characterized in that: The opening indicator (300) comprises a pointer (301), which is arranged between the mounting shell (201) and the wrench (104) and fixedly connected to the valve stem (103). The top of the mounting shell (201) is provided with an indicating scale for reflecting the opening of the ball (102), and the scale pointed by the pointer (301) is the current opening of the ball (102).

3. A manual ball valve according to claim 1, characterized in that: The locking assembly (400) includes a locking screw (401), and a threaded hole that fits with the locking screw (401) is formed on the side wall of the mounting shell (201). The locking screw (401) is threadedly connected to the mounting shell (201) through the threaded hole. After the locking screw (401) passes through the threaded hole, it presses against the valve stem (103).

4. A manual ball valve according to claim 3, characterized in that: The locking assembly (400) further comprises a button cap (402), wherein the button cap (402) is fixedly connected to an end of the locking screw (401) away from the valve stem (103).

5. A manual ball valve according to claim 4, characterized in that: The button cap (402) is arranged to coincide with the axis of the locking screw (401), and the outer side of the button cap (402) has anti-slip grooves.

6. A manual ball valve according to claim 1, characterized in that: The fine adjustment mechanism (200) further comprises a rotating disk (204), wherein the rotating disk (204) is arranged outside the mounting housing (201) and is fixedly connected to the end of the rotating shaft of the secondary bevel gear (203).

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