Ball valve type steel-plastic conversion pipe fitting

Abstract

The utility model belongs to the technical field of gas pipelines, and provides a ball valve type steel-plastic conversion pipe fitting which comprises a bamboo joint valve cover, and one end of the bamboo joint valve cover is detachably connected with a PE pipe. One opening end of the valve body is fixedly communicated with the end, away from the PE pipe, of the bamboo joint valve cover, a ball core is arranged in the valve body, a channel is formed in the ball core, the other opening end of the valve body is communicated with the PE pipe through the channel in the ball core, one end of a valve rod is fixedly connected to the ball core, and the other end of the valve rod rotationally penetrates through the valve body and is provided with a rotating handle assembly. The sealing performance of the ball valve type plastic steel conversion pipe fitting can be improved, operation steps during installation are reduced, and the installation cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas pipelines, and in particular relates to a ball valve type steel-plastic conversion pipe fitting. Background Art

[0002] At present, when connecting the relief valve to the gas PE pipe, it is necessary to first weld the outer thread steel-plastic conversion on the branch PE pipe through an electric fusion sleeve and then connect the inner thread ball valve to realize the opening and closing function of the gas. The opening and closing structure realizes the above functions through the combination of the steel-plastic conversion and the ball valve, and then realizes the connection of the relief valve through the inner thread ball valve. Due to the diversity and danger of gas components, the structural sealing performance of the outer thread steel-plastic conversion and the inner thread ball valve is poor, and the installation is complicated. At the same time, there are many parts for connection, and the installation cost is high. Utility Model Content

[0003] The utility model aims to provide a ball valve type steel-plastic conversion pipe fitting to solve the above problems, thereby improving the sealing performance of the ball valve type plastic-steel conversion pipe fitting, while reducing the operating steps during installation and reducing the installation cost.

[0004] To achieve the above purpose, the utility model provides the following solution: a ball valve type steel-plastic conversion pipe fitting, comprising:

[0005] A bamboo valve cover, one end of which is detachably connected to a PE pipe;

[0006] A valve body, one open end of the valve body is fixedly connected to an end of the bamboo valve cover away from the PE pipe, a ball core is arranged in the valve body, a channel is arranged on the ball core, the other open end of the valve body is connected to the PE pipe through the channel in the ball core, one end of the valve stem is fixedly connected to the ball core, the other end of the valve stem rotates through the valve body and is provided with a rotating handle assembly.

[0007] Preferably, the bamboo valve cover includes a straight pipe and a connecting plate fixedly sleeved on one end of the straight pipe, the connecting plate is fixedly connected to the valve body at one end away from the straight pipe, and a plurality of triangular bosses are fixedly sleeved on the outer wall of the straight pipe along the axial direction, and the plurality of triangular bosses are arranged corresponding to the inner wall of the PE pipe.

[0008] Preferably, a sealing groove is circumferentially formed on one end of the outer wall of the straight-through pipe away from the connecting plate, a sealing gasket is sleeved in the sealing groove, and the sealing gasket is arranged corresponding to the inner wall of the PE pipe.

[0009] Preferably, a through valve seat is sleeved in the valve body, the ball core is arranged in the through valve seat, and openings at both ends of the through valve seat are respectively connected with openings at both ends of the valve body.

[0010] Preferably, an O-ring and two combined packings are sequentially arranged between the valve stem and the valve body along the axis of the valve stem from bottom to top.

[0011] Preferably, the rotating handle assembly comprises a handle sleeved on an end of the valve stem away from the ball core, and a nut is provided at the end of the valve stem away from the ball core, and the nut is used to press the handle onto the valve stem.

[0012] Preferably, a clamping ring is provided on the fixed sleeve of the PE pipe, and the clamping ring is located at the connection between the bamboo valve cover and the PE pipe.

[0013] Compared with the prior art, the utility model has the following advantages and technical effects: the main function of the bamboo valve cover is to quickly connect with the PE pipe; the main function of the valve body is to be integrally connected with the bamboo valve cover at one end and detachably connected with the relief valve at the other end; the main function of the ball core is to achieve the connection or blocking between the PE pipe, the valve body, the channel and the relief valve through its own rotation, so as to achieve the function of controlling opening and closing; the main function of the rotating handle assembly is to control the rotation angle of the ball core through the valve stem, so as to achieve the function of controlling opening and closing. On the whole, the utility model integrates the bamboo valve cover with the valve body, so that the internal and external thread connection method is no longer used in actual operation, and the ball valve can be directly connected to the PE pipe. Compared with the internal and external thread connection method, the sealing performance is improved and the installation operation steps are simplified. At the same time, the plastic-steel conversion joint and the ball valve are integrated into one design, which can reduce the installation cost. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 1 This is a cross-sectional view of the connection state of the steel-plastic conversion pipe fitting of the utility model;

[0016] Figure 2 It is a cross-sectional view of the steel-plastic conversion pipe fitting of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the steel-plastic conversion pipe fitting of the utility model;

[0018] Among them, 1. bamboo valve cover; 2. valve body; 3. clamping ring; 4. PE pipe; 5. valve stem; 6. valve stem gasket; 7. O-ring; 8. two-combination packing; 9. locking nut; 10. handle; 11. spring washer; 12. nut; 13. ball core; 14. straight-through valve seat; 15. straight-through pipe; 16. connecting plate; 17. triangular boss; 18. sealing groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Reference Figure 1-Figure 3 The utility model provides a ball valve type steel-plastic conversion pipe fitting, comprising:

[0022] A bamboo valve cover 1, one end of which is detachably connected to a PE pipe 4;

[0023] The valve body 2 has an open end which is fixedly connected to an end of the bamboo valve cover 1 away from the PE pipe 4. A ball core 13 is arranged in the valve body 2, and a channel is arranged on the ball core 13. The other open end of the valve body 2 is connected to the PE pipe 4 through the channel in the ball core 13. One end of the valve stem 5 is fixedly connected to the ball core 13. The other end of the valve stem 5 rotates through the valve body 2 and is provided with a rotating handle assembly.

[0024] The main function of the bamboo valve cover 1 is to quickly connect with the PE pipe 4; the main function of the valve body 2 is to be integrally connected with the bamboo valve cover 1 at one end and to be detachably connected with the relief valve at the other end; the main function of the ball core 13 is to achieve the connection or blocking between the PE pipe 4, the valve body 2, the channel and the relief valve through its own rotation, so as to achieve the function of controlling opening and closing; the main function of the rotating handle assembly is to control the rotation angle of the ball core 13 through the valve stem 5, so as to achieve the function of controlling opening and closing. On the whole, the utility model integrates the bamboo valve cover with the valve body, so that the internal and external thread connection method is no longer used in actual operation, and the ball valve can be directly connected to the PE pipe. Compared with the internal and external thread connection method, the sealing performance is improved and the installation operation steps are simplified. At the same time, the plastic-steel conversion joint and the ball valve are integrated into one design, which can reduce the installation cost.

[0025] A further optimized solution is that the bamboo valve cover 1 includes a straight pipe 15 and a connecting plate 16 fixedly sleeved on one end of the straight pipe 15, the connecting plate 16 is fixedly connected to the valve body 2 at one end away from the straight pipe 15, and a plurality of triangular bosses 17 are fixedly sleeved on the outer wall of the straight pipe 15 along the axial direction, and the plurality of triangular bosses 17 are arranged corresponding to the inner wall of the PE pipe 4.

[0026] like Figure 1-Figure 3 As shown, two groups of triangular bosses 17 are provided, and the inclined surfaces of the triangular bosses 17 are arranged to face the side of the straight pipe 15 away from the connecting plate 16. The straight pipe 15 and the PE pipe are connected together by cold pressing, and the triangular bosses 17 can play the role of anti-slip and sealing after the connection is completed.

[0027] As a further optimization solution, a sealing groove 18 is circumferentially formed at one end of the outer wall of the straight-through pipe 15 away from the connecting plate 16 , and a sealing gasket is sleeved in the sealing groove 18 , and the sealing gasket is arranged corresponding to the inner wall of the PE pipe 4 .

[0028] like Figure 1-Figure 3 As shown, before the PE pipe 4 is connected to the straight pipe 15, a sealing gasket (not shown in the figure) is inserted into the sealing groove 18. After the connection is completed, the sealing gasket is located between the sealing groove 18 and the inner wall of the PE pipe 4 to play a sealing role.

[0029] According to a further optimized solution, a straight-through valve seat 14 is sleeved in the valve body 2 , and the ball core 13 is arranged in the straight-through valve seat 14 . The openings at both ends of the straight-through valve seat 14 are respectively connected to the openings at both ends of the valve body 2 .

[0030] like Figure 2 As shown, the main function of the through valve seat 14 is to restrict the ball core 13 from rotating in the spherical cavity therein.

[0031] According to a further optimized solution, an O-ring 7 and two combined packings 8 are sequentially arranged between the valve stem 5 and the valve body 2 along the axis of the valve stem 5 from bottom to top.

[0032] In a further optimized solution, a compression nut 9 is threadedly connected to the wall surface of the valve body 2, and the valve stem 5 passes through the compression nut 9. The compression nut 9 is used to limit the two combined packings 8 between the valve stem 5 and the valve body 2.

[0033] like Figure 2 As shown, a through hole is provided on the side wall of the valve body 2 for the valve stem 5 to pass through, and an O-ring 7 and two combined fillers 8 are arranged in the through hole to play a sealing role.

[0034] To further optimize the solution, a valve stem gasket 6 is also sleeved on one end of the valve stem 5 close to the ball core 13. The valve stem gasket 6 fits with the boss arranged on the wall of the through hole, which serves as an axis limiter for the valve stem 5, so that the valve stem 5 can only drive the ball core 13 to rotate around its axis.

[0035] A further optimized solution is that the rotating handle assembly includes a handle 10 sleeved on the end of the valve stem 5 away from the ball core 13, and a nut 12 is provided at the end of the valve stem 5 away from the ball core 13, and the nut 12 is used to press the handle 10 onto the valve stem 5.

[0036] like Figure 2 As shown, the handle 10 is a butterfly handle. A boss is provided at one end of the valve stem 5 away from the ball core 13, and the bottom surface of the handle 10 fits the boss. By tightening the nut 12 on the top of the valve stem 5, the top surface of the handle 10 is pressed, so that the handle 10 is fixed on the valve stem 5. A spring washer 11 can be set between the nut 12 and the handle 10 to prevent the nut 12 from loosening.

[0037] According to a further optimization scheme, a clamping ring 3 is provided on the fixed sleeve of the PE pipe 4 , and the clamping ring 3 is located at the connection between the bamboo valve cover 1 and the PE pipe 4 .

[0038] like Figure 1 As shown, the clamping ring 3 is a metal clamping ring, and a stainless steel throat clamp or a single-ear clamp can be selected. After the PE pipe 4 is connected to the bamboo valve cover 1, in order to ensure the long-term reliability of the connection, the clamping ring 3 is sleeved on the periphery of the connection between the PE pipe 4 and the bamboo valve cover 1, and the PE pipe 4 is clamped on the bamboo valve cover 1 to achieve the purpose of reliable connection.

[0039] The working process of this embodiment is as follows: when the worker is installing, he first puts the clamping ring 3 tightly on the PE pipe 4, then holds the ball valve type plastic-steel conversion pipe fitting of the utility model, presses the bamboo valve cover 1 into the end of the PE pipe 4 by cold pressing, and then tightens the clamping ring 3 at the connection position of the PE pipe 4 and the bamboo valve cover 1 with a tool to complete the installation.

[0040] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A ball valve type steel-plastic conversion pipe fitting, characterized in that: include: A bamboo joint valve cover (1), one end of which is detachably connected to a PE pipe (4); A valve body (2), one open end of the valve body (2) is fixedly connected to one end of the bamboo valve cover (1) away from the PE pipe (4), a ball core (13) is arranged in the valve body (2), a channel is arranged on the ball core (13), the other open end of the valve body (2) is connected to the PE pipe (4) through the channel in the ball core (13), one end of the valve stem (5) is fixedly connected to the ball core (13), the other end of the valve stem (5) rotates through the valve body (2) and is provided with a rotating handle assembly.

2. A ball valve type steel-plastic conversion pipe fitting according to claim 1, characterized in that: The bamboo valve cover (1) comprises a straight pipe (15) and a connecting plate (16) fixedly sleeved on one end of the straight pipe (15); the connecting plate (16) is fixedly connected to the valve body (2) at one end away from the straight pipe (15); a plurality of triangular bosses (17) are fixedly sleeved on the outer wall of the straight pipe (15) along the axial direction; the plurality of triangular bosses (17) are arranged corresponding to the inner wall of the PE pipe (4).

3. A ball valve type steel-plastic conversion pipe fitting according to claim 2, characterized in that: A sealing groove (18) is provided in the circumferential direction at one end of the outer wall of the straight-through pipe (15) away from the connecting plate (16), a sealing gasket is sleeved in the sealing groove (18), and the sealing gasket is arranged corresponding to the inner wall of the PE pipe (4).

4. The ball valve type steel-plastic conversion pipe fitting according to claim 1, characterized in that: The valve body (2) is provided with a straight-through valve seat (14), the ball core (13) is arranged in the straight-through valve seat (14), and the openings at both ends of the straight-through valve seat (14) are respectively connected to the openings at both ends of the valve body (2).

5. The ball valve type steel-plastic conversion pipe fitting according to claim 1, characterized in that: An O-ring (7) and two combined fillers (8) are arranged in sequence from bottom to top along the axis of the valve stem (5) between the valve stem (5) and the valve body (2).

6. The ball valve type steel-plastic conversion pipe fitting according to claim 1, characterized in that: The rotating handle assembly comprises a handle (10) sleeved on an end of the valve stem (5) away from the ball core (13); a nut (12) is provided at the end of the valve stem (5) away from the ball core (13); and the nut (12) is used to press the handle (10) onto the valve stem (5).

7. The ball valve type steel-plastic conversion pipe fitting according to claim 1, characterized in that: The fixed sleeve on the PE pipe (4) is provided with a clamping ring (3), and the clamping ring (3) is located at the connection between the bamboo valve cover (1) and the PE pipe (4).

Images