PPR (pentatricopeptide repeats) full-bore stop valve

Abstract

The utility model discloses a PPR full-bore stop valve, which relates to the technical field of valve devices, and comprises an L-shaped water inlet pipe, the L-shaped water inlet pipe is provided with a water inlet and a valve port, the right side of the L-shaped water inlet pipe is fixedly connected with a water outlet pipe, the joint of the L-shaped water inlet pipe and the water outlet pipe is communicated, the valve port is provided with a plug, and the plug is connected with the L-shaped water inlet pipe. According to the utility model, the L-shaped water inlet pipe is arranged, and the transition part from the water inlet in the L-shaped water inlet pipe to the valve port is subjected to radian treatment, so that the area of the valve port is the same as the size of the water inlet, and the pipeline is a linear all-pass pipeline; the fluid in the valve body is not influenced by a linear turning structure, the flow resistance is small, the circulation efficiency of the fluid is improved, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of valve device technology, and in particular relates to a PPR full-bore shut-off valve. Background Technology

[0002] Gate valves are a type of pipeline connection valve, belonging to the category of forced-closure valves. When the valve is closed, pressure must be applied to the valve core to achieve a leak-proof sealing surface. Currently, the most common gate valves on the market mainly include angle gate valves and direct-flow gate valves. However, these traditional designs have some significant limitations. Conventional gate valves have a complex internal structure, resulting in a halved flow area, which in turn affects the fluid flow efficiency. Therefore, we propose a PPR full-bore gate valve. Utility Model Content

[0003] The purpose of this invention is to provide a PPR full-bore shut-off valve. By setting an L-shaped inlet pipe and making the transition from the inlet to the valve port curved, the area of ​​the valve port is the same as the size of the inlet. The pipe is a straight, full-bore pipe, so the fluid is not affected by the straight bend structure in the valve body, resulting in low flow resistance and improved fluid flow efficiency. This invention solves some significant limitations of traditional designs. Conventional shut-off valves have a complex internal structure, which halves the flow area, resulting in a small flow area and thus affecting the fluid flow efficiency.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a PPR full-bore shut-off valve, comprising an L-shaped inlet pipe, wherein an inlet and a valve port are respectively provided inside the L-shaped inlet pipe, and an outlet pipe is fixedly connected to the right side of the L-shaped inlet pipe. The outlet pipe section is an arc-shaped pipe section, and the connection between the L-shaped inlet pipe and the outlet pipe is a continuous connection. A plug is provided on the valve port. The plug is conical in shape and vertically arranged. A hexagonal rod is fixedly connected to the top of the plug. A circular hole is opened at the top of the hexagonal rod, and a valve stem is threaded to the inner wall of the circular hole.

[0006] Furthermore, an internal threaded insert is fixedly connected to the upper end of the L-shaped water inlet pipe, and a valve body is threadedly connected to the L-shaped water inlet pipe through the internal threaded insert. A handwheel is provided on the top of the valve body, and a groove is provided at the center of the top of the handwheel. The valve stem passes through the bottom of the handwheel and extends to the inner wall of the groove.

[0007] Furthermore, the outer wall of the valve stem located on the inner wall of the groove is threaded, a nut is threaded to the top of the valve stem, and a handwheel end cap is snapped into the top of the groove.

[0008] Furthermore, a hexagonal opening is provided at the bottom of the valve body, the hexagonal opening is in contact with the outer wall of the top of the hexagonal rod, and a circular opening is provided at the top of the valve body.

[0009] Furthermore, the inner wall of the circular opening is rotatably connected to the outer wall of the middle end of the valve stem. The outer wall of the middle end of the valve stem is provided with an annular groove. There are multiple annular grooves. A sealing ring I is sleeved inside the multiple annular grooves. The multiple sealing rings I are in contact with the inner wall of the top of the valve body. A sealing ring II is sleeved at the lower end of the valve body. The sealing ring II is in contact with the inner wall of the top of the L-shaped water inlet pipe.

[0010] This utility model has the following beneficial effects:

[0011] 1. This utility model features an L-shaped inlet pipe with an arc-shaped transition from the inlet to the valve opening, ensuring that the valve opening area is the same size as the inlet. The pipe is a straight, fully-connected type, preventing the fluid from being affected by straight bends within the valve body, resulting in low flow resistance and improved fluid flow efficiency. The threaded handwheel design makes opening and closing the valve more convenient while ensuring good sealing performance, thus enhancing the practicality of the device.

[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a half-sectional structural diagram of a PPR full-bore shut-off valve according to the present invention.

[0015] Figure 2 This is a top view schematic diagram of the overall structure of this utility model.

[0016] The attached diagram lists the components represented by each number as follows:

[0017] 1. Handwheel end cap; 2. Nut; 3. Handwheel; 301. Groove; 4. Valve stem; 5. Valve body; 501. Hexagonal opening; 502. Threaded hole; 6. Internal thread insert; 7. Sealing ring one; 701. Sealing ring two; 8. Plug; 801. Hexagonal rod; 802. Round hole; 9. L-shaped water inlet pipe; 10. Water inlet; 11. Water outlet pipe; 12. Valve port. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-2 As shown, this utility model is a PPR full-bore shut-off valve, including an L-shaped inlet pipe 9, which is provided with an inlet port 10 and a valve port 12. An outlet pipe 11 is fixedly connected to the right side of the L-shaped inlet pipe 9. The connection between the L-shaped inlet pipe 9 and the outlet pipe 11 is a continuous connection. On the valve port 12, a cone-shaped plug 8 is vertically arranged. A hexagonal rod 801 is fixedly connected to the top of the plug 8. A circular hole 802 is opened on the top of the hexagonal rod 801. A valve stem 4 is threadedly connected to the inner wall of the circular hole 802. The purpose of setting the valve stem 4 is to drive the plug 8 to rise and fall by rotating the handwheel 3, thereby controlling the water flow. The purpose of setting the plug 8 is that the valve stem 4 drives the plug 8 to rise and fall linearly, thereby controlling the water flow.

[0020] The upper end of the L-shaped water inlet pipe 9 is provided with an internal thread insert 6. The L-shaped water inlet pipe 9 is threadedly connected to the valve body 5 through the internal thread insert 6. The top of the valve body 5 is provided with a handwheel 3. A groove 301 is opened at the center of the top of the handwheel 3. The valve stem 4 passes through the bottom of the handwheel 3 and extends to the inner wall of the groove 301. The purpose of the internal thread insert 7 is to cooperate with the valve body 6 to prevent the valve body 6 from detaching from the water outlet pipe section 11.

[0021] The valve stem 4 located on the inner wall of the groove 301 has threads on its outer wall, and the valve stem 4 located on the inner wall of the groove 301 is threadedly connected to a nut 2. A handwheel end cap 1 is snapped into the top of the groove 301.

[0022] The bottom of the valve body 5 has a hexagonal opening 501. The purpose of setting the hexagonal opening as a rectangle is to limit the movement with the top support rod 801 of the plug 8, thereby enabling lifting and lowering.

[0023] The hexagonal opening 501 contacts the outer wall of the top end of the hexagonal rod 801, and the valve body 5 has a circular opening 502 at the top.

[0024] The inner wall of the circular opening 502 is rotatably connected to the outer wall of the middle end of the valve stem 4. The outer wall of the middle end of the valve stem 4 has two annular grooves. A sealing ring 7 is fitted inside the two annular grooves. The two sealing rings 7 are in contact with the inner wall of the top of the valve body 5. A sealing ring 701 is fitted at the lower end of the valve body 5. The sealing ring 701 is in contact with the inner wall of the top of the L-shaped water inlet pipe 9. The purpose of setting the sealing ring 4 is to ensure good sealing performance.

[0025] The inner and outer diameters of the outlet pipe are the same as those of the inlet. The purpose of setting the inlet 10 and the outlet pipe 11 to have the same diameter is to ensure that the flow velocity and flow rate of water in the pipe are consistent. This helps to maintain stable water pressure and avoid fluctuations in water flow velocity and pressure caused by changes in pipe diameter.

[0026] A specific application of this embodiment is as follows: the handwheel 3 and the valve stem 4 are connected by a rectangular joint. By turning the handwheel 3, the handwheel 3 drives the nut 2 to rotate. When the nut 2 rotates, it drives the valve stem 4 to rotate. The function of the nut 2 is to fix the handwheel on the valve stem 4, so that the valve stem 4 drives the plug 8 to move up and down linearly, thereby controlling the water flow. In addition, the inlet 10 in the L-shaped water inlet pipe 9 transitions to the valve port with an arc treatment, so that the area of ​​the valve port is the same as the size of the inlet 10. The pipeline is a straight and full-flow type pipeline, and the fluid is not affected by the right-angle bend structure in the valve body. The flow resistance is small and the flow efficiency of the fluid is improved. The design of the threaded connection of the handwheel 3 makes the opening and closing of the valve more convenient, while ensuring good sealing performance and improving the practicality of the device.

[0027] This utility model provides a PPR full-bore shut-off valve. By setting an L-shaped inlet pipe and making the transition from the inlet to the valve port of the L-shaped inlet pipe curved, the area of ​​the valve port is the same as the size of the inlet. The pipeline is a straight full-bore pipeline, and the fluid is not affected by the straight bend structure in the valve body. The flow resistance is small and the flow efficiency of the fluid is improved. It solves some significant limitations of traditional designs. Conventional shut-off valves have a complex internal structure and the flow area is halved, resulting in a small flow area and thus affecting the flow efficiency of the fluid.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A PPR full-bore shut-off valve, characterized in that, The device includes an L-shaped inlet pipe (9), which has an inlet (10) and a valve port (12) respectively. An outlet pipe (11) is fixedly connected to the right side of the L-shaped inlet pipe (9). The outlet pipe (11) is an arc-shaped pipe section. The connection between the L-shaped inlet pipe (9) and the outlet pipe (11) is a continuous connection. A plug (8) is provided on the valve port (12). The plug (8) is conical in shape and vertically arranged. A hexagonal rod (801) is fixedly connected to the top of the plug (8). A round hole (802) is opened on the top of the hexagonal rod (801). A valve stem (4) is threadedly connected to the inner wall of the round hole (802).

2. The PPR full-bore shut-off valve according to claim 1, characterized in that, The upper end of the L-shaped water inlet pipe (9) is fixedly connected to an internal thread insert (6). The L-shaped water inlet pipe (9) is threadedly connected to a valve body (5) through the internal thread insert (6). A handwheel (3) is provided on the top of the valve body (5). A groove (301) is provided at the center of the top of the handwheel (3). The valve stem (4) passes through the bottom of the handwheel (3) and extends to the inner wall of the groove (301).

3. A PPR full-bore shut-off valve according to claim 2, characterized in that, The valve stem (4) located on the inner wall of the groove (301) has a thread on its outer wall, and a nut (2) is threaded to the top of the valve stem (4). A handwheel end cap (1) is snapped into the top of the groove (301).

4. A PPR full-bore shut-off valve according to claim 2, characterized in that, The valve body (5) has a hexagonal opening (501) at its bottom.

5. A PPR full-bore shut-off valve according to claim 4, characterized in that, The hexagonal opening (501) contacts the outer wall of the top end of the hexagonal rod (801), and the valve body (5) has a circular opening (502) at the top.

6. A PPR full-bore shut-off valve according to claim 5, characterized in that, The inner wall of the circular opening (502) is rotatably connected to the outer wall of the middle end of the valve stem (4). The outer wall of the middle end of the valve stem (4) is provided with an annular groove. There are multiple annular grooves. A sealing ring 1 (7) is sleeved inside the multiple annular grooves. The multiple sealing ring 1 (7) contacts the inner wall of the top end of the valve body (5). A sealing ring 2 (701) is sleeved at the lower end of the valve body (5). The sealing ring 2 (701) contacts the inner wall of the top end of the L-shaped water inlet pipe (9).

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