Stem concealed ball valve

Abstract

This utility model provides a valve stem concealed ball valve, including a ball valve body. The ball valve body includes: a valve body with several equidistant mating sections arranged circumferentially at its tail end, each mating section having a threaded hole at its center, the axis of the threaded holes being parallel to the axis of the inner hole of the valve body; the mating sections can adjust the installation direction of the ball valve as needed to avoid positional interference; a ball, rotatably disposed in the inner hole of the valve body; a valve stem, rotatably connected to the valve body, one end of which is connected to the ball, and the other end of which protrudes from the valve body; and a valve cap, detachably connected to the valve body, which can cover the other end of the valve stem; the valve cap conceals the exposed part of the valve stem, protecting the ball valve from accidental opening and closing and preventing misoperation of the valve stem.

Description

Technical Field

[0001] This utility model relates to a ball valve, and more particularly to a ball valve with a concealed valve stem. Background Technology

[0002] The handle on the ball valve, which is originally connected to the valve stem, is exposed. Accidental contact with the handle or valve stem may cause the ball valve to open or close unexpectedly. In addition, when the ball valve is installed on the pipe joint, its direction is fixed and cannot be adjusted as needed. When interference occurs, the ball valve must be replaced, which increases costs. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a stem-concealed ball valve, which can hide the valve stem, protect the ball valve, prevent misoperation, and allow adjustment of the ball valve's installation direction as needed to avoid positional interference. The technical solution adopted by this utility model is as follows:

[0004] A stem-concealed ball valve includes a ball valve body, the ball valve body comprising:

[0005] The valve body has several mating sections equidistantly arranged along the circumference at its tail end. A threaded hole is provided at the center of each mating section, and the axis of the several threaded holes is parallel to the axis of the inner hole of the valve body.

[0006] A sphere is rotatably disposed within the inner bore of the valve body;

[0007] A valve stem is rotatably connected to the valve body, with one end connected to the ball and the other end extending out of the valve body;

[0008] A valve cap is detachably connected to the valve body, and the valve cap can cover the other end of the valve stem.

[0009] A sealing ring is disposed in the inner hole of the valve body, and the outer spherical surface of the ball is in close contact with the sealing ring.

[0010] Furthermore, the valve cap includes a coaxially connected component:

[0011] The first cap has a cylindrical outer surface, and the other end of the valve stem extends into the first cap.

[0012] The second cap has a hexagonal outer surface and an internal thread on its inner surface. The second cap is helically connected to the threaded post on the valve body through the internal thread.

[0013] The second cap part and the first cap part are connected by a conical transition.

[0014] Furthermore, the valve body is provided with a pressure testing port that communicates with its inner hole. The pressure testing port is located upstream of the ball, and a pressure testing connector is installed at the pressure testing port.

[0015] Furthermore, the number of the docking segments is at least three.

[0016] Advantages of this utility model:

[0017] By using the valve stem and valve cap, the exposed part of the valve stem is concealed, protecting the ball valve from accidental opening and closing and preventing misoperation of the valve stem;

[0018] The ball valve installation direction can be switched by using the mating section and threaded hole. The switching angle of the installation direction can be changed according to the number of mating sections, so as to avoid interference with other components during ball valve installation and expand the scope of application.

[0019] The first and second caps make it possible to remove the valve cap using special tools (such as a hex wrench), further enhancing the protection of the ball valve.

[0020] The pressure test port and pressure test connector facilitate pressure measurement at the ball valve inlet, which is beneficial for the collection and feedback of pressure data. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the present invention.

[0022] Figure 2 This is a plan view of the docking section.

[0023] Figure 3 This is a schematic diagram of the assembly of the connecting section and the pipe joint.

[0024] Figure 4 This is a top view of the valve cap.

[0025] In the diagram: 10-ball valve body, 110-valve body, 111-connection section, 112-threaded hole, 113-pressure test port, 120-ball, 130-valve stem, 140-valve cap, 141-first cap, 142-second cap, 150-sealing ring, 160-pressure test connector. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0027] Please see the appendix Figure 1 - Appendix Figure 3This application proposes a valve stem concealed ball valve, including a ball valve body 10. The ball valve body 10 includes: a valve body 110, with a plurality of mating sections 111 evenly arranged circumferentially at its tail end, and a threaded hole 112 provided at the center of the mating section 111, the axis of the plurality of threaded holes 112 being parallel to the axis of the inner hole of the valve body 110; a ball 120, rotatably disposed in the inner hole of the valve body 110; a valve stem 130, rotatably connected to the valve body 110, one end of which is connected to the ball 120, and the other end of which protrudes from the valve body 110; a valve cap 140, detachably connected to the valve body 110, the valve cap 140 being able to cover the other end of the valve stem 130; and a sealing ring 150 disposed in the inner hole of the valve body 110, the outer spherical surface of the ball 120 being tightly fitted with the sealing ring 150.

[0028] When this application is used, the valve stem 130 is hidden by the valve cap 140. The valve stem 130 can only be operated after the valve cap 140 is removed. Therefore, the ball valve can be protected from accidental opening and closing and the valve stem can be avoided from misoperation.

[0029] In the prior art, the tail end of the ball valve body 10 needs to be connected to the flange at the head end of the pipe joint and fixed by bolts; by rotating the valve stem 130 to drive the ball 120 to rotate, the inner hole of the valve body 110 is opened or blocked, thereby realizing the opening and closing of the ball valve.

[0030] It should be noted that the shape of the tail end of the ball valve body 10 should match the shape of the flange at the head end of the pipe fitting. That is, the number of mating sections 111 and the number of threaded holes 112 should match the number of through holes on the flange. Specifically, when the number of threaded holes 112 is y and the number of through holes is x, y = nx (n is a natural number greater than 0). When adjusting the installation direction of the ball valve, ensure that each through hole corresponds to one threaded hole 112, but it is not necessary for each threaded hole 112 to correspond to a through hole.

[0031] In one specific embodiment, the flange has three through holes, three mating sections 111, and three threaded holes 112 (not shown in the figure), with each of the three through holes corresponding to one of the three threaded holes. Thus, the included angle between adjacent threaded holes 112 is 120°, indicating that the ball valve body 10 has three installation directions.

[0032] In another specific embodiment, the flange has four through holes, four mating sections 111, and four threaded holes 112 (not shown in the figure), with each of the four through holes corresponding to one of the four threaded holes. Thus, the included angle between adjacent threaded holes 112 is 90°, indicating that the ball valve body 10 has four installation directions.

[0033] In another specific embodiment, the flange has 3 through holes, and the number of mating sections 111 and threaded holes 112 are 6 each (not shown in the figure). Thus, the included angle between adjacent threaded holes 112 is 60° and the included angle between adjacent through holes is 120°, indicating that the ball valve body 10 has 6 installation directions.

[0034] In another specific embodiment, as shown in the appendix Figure 2 and attached Figure 3 As shown, the flange has 4 through holes, 8 butt joints 111, and 8 threaded holes 112. Thus, the included angle between adjacent threaded holes 112 is 45° and the included angle between adjacent through holes is 90°, indicating that the ball valve body 10 has 8 installation directions.

[0035] Since the mating section 111 is matched with the threaded hole 112, the mating section 111 protrudes outward relative to the valve body 110, making it easier to determine the angle that the ball valve body 10 needs to be adjusted, and also making it easier to quickly align the through hole with the threaded hole.

[0036] In one implementation method, please refer to the appendix. Figure 1 and attached Figure 4 The valve cap 140 includes a first cap 141 coaxially connected to the valve body 110, the outer surface of which is cylindrical, and the other end of the valve stem 130 extends into the first cap 141; and a second cap 142, the outer surface of which is hexagonal, and the inner surface of which is provided with internal threads. The second cap 142 is helically connected to a threaded post on the valve body 110 via the internal threads. The second cap 142 and the first cap 141 are connected by a conical transition. The first cap 141 ensures the complete concealment of the valve stem 140, while the second cap 142 requires special tools (such as a hex wrench) to remove the valve cap, further improving the protection of the ball valve.

[0037] Further, please refer to the appendix. Figure 1 The valve body 110 is provided with a pressure testing port 113 communicating with its inner hole. The pressure testing port 113 is located upstream of the ball 120, and a pressure testing connector 160 is installed at the pressure testing port 113. By removing the protective cap on the pressure testing connector 160, the pressure testing connector 160 can be connected to a pressure detection device (such as a pressure gauge) to facilitate the measurement of the pressure inside the ball valve, which is beneficial for the collection and feedback of pressure data.

[0038] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A stem-hidden ball valve comprising a ball valve body (10), characterized in that, The ball valve body (10) includes: The valve body (110) has several mating sections (111) arranged equidistantly along the circumference at its tail end. A threaded hole (112) is provided at the center of the mating section (111). The axis of the several threaded holes (112) is parallel to the axis of the inner hole of the valve body (110). A ball (120) is rotatably disposed in the inner hole of the valve body (110); The valve stem (130) is rotatably connected to the valve body (110), with one end connected to the ball (120) and the other end extending out of the valve body (110). A valve cap (140) is detachably connected to the valve body (110), and the valve cap (140) can cover the other end of the valve stem (130); A sealing ring (150) is disposed in the inner hole of the valve body (110), and the outer spherical surface of the ball (120) is in close contact with the sealing ring (150).

2. The stem-hidden ball valve as claimed in claim 1, wherein, The valve cap (140) includes coaxially connected: The first cap (141) has a cylindrical outer surface, and the other end of the valve stem (130) extends into the first cap (141); The second cap (142) has a hexagonal outer surface and an internal thread on its inner surface. The second cap (142) is screwed to the threaded post on the valve body (110) through the internal thread. The second cap (142) and the first cap (141) are connected by a conical transition.

3. The stem-hidden ball valve as claimed in claim 1, wherein: The valve body (110) is provided with a pressure measuring port (113) that communicates with its inner hole. The pressure measuring port (113) is located upstream of the ball (120), and a pressure measuring connector (160) is installed at the pressure measuring port (113).

4. The stem-hidden ball valve according to any one of claims 1-3, characterized in that: The number of the docking segments (111) is at least three.

Images