Plastic ball valve

Abstract

The utility model discloses a kind of plastic ball valves, including plastic valve body and the connecting pipe head fixed at its both end parts: the ball body is rotatably connected in the plastic valve body, auxiliary support pipe is fixedly installed at the top of the plastic valve body, the valve stem is fixedly installed at the top of the ball body, the valve stem is rotatably connected on the inner side wall of auxiliary support pipe;The connecting pipe head top is fixedly installed with sub material pipe.The utility model, through the rotation of ball body, realizes the accurate on-off of main passage, sub material pipe provides stable auxiliary passage, first switch valve body can flexibly control the opening and closure of auxiliary passage;The combination of support ring pipe, side bracing plate, half tile plate and bolt pair can firmly connect sub material pipe and auxiliary support pipe, and enhance the overall structure integrity;Rubber strip avoids connection site abrasion, tee pipe and pressure relief pipe can discharge excessive pressure in time, guarantee pipeline safety, overall adaptation variety of medium control scene, improve use reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of control devices in fluid transport pipelines, and in particular to a plastic ball valve. Background Technology

[0002] Plastic ball valves are commonly used control components in fluid pipeline systems. Due to the corrosion resistance and light weight of plastic, they are widely used for the transport and control of water, gas, and corrosive media. They open and close the passage through the rotation of an internal ball, are easy to operate, and have important applications in industrial and civil fields.

[0003] In practical applications, some pipeline systems require the main passage and auxiliary passage to work together. However, the connection stability between the auxiliary passage and the main structure of existing plastic ball valves is insufficient, and they are prone to loosening during media flow or operation. At the same time, the on / off control of the auxiliary passage is not well coordinated with the main passage, making it difficult to meet the needs of complex pipeline systems. Therefore, we propose a plastic ball valve to solve the above problems. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings in the above-mentioned background technology and to propose a plastic ball valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plastic ball valve includes a plastic valve body and connecting pipes fixed at both ends thereof:

[0007] A ball is rotatably connected inside the plastic valve body, an auxiliary support tube is fixedly installed on the top of the plastic valve body, a valve stem is fixedly installed on the top of the ball, and the valve stem is rotatably connected to the inner wall of the auxiliary support tube.

[0008] A secondary material pipe is fixedly installed on the top of the connecting pipe head, and a first switch valve body is fixedly installed on the outer wall of the secondary material pipe;

[0009] A support ring tube is slidably sleeved on the outer wall of the auxiliary material tube. A side support plate is fixedly installed on the outer wall of the support ring tube. A half tile plate is fixedly installed at the end of the side support plate. The two half tile plates are fixedly connected to the outer wall of the auxiliary support tube by multiple bolt pairs.

[0010] Preferably, the valve stem has a threaded mounting hole at the top.

[0011] Preferably, a three-way pipe is fixedly installed on the outer wall of the auxiliary material pipe, a pressure relief pipe is fixedly installed on the outer wall of the three-way pipe, and a second switch valve body is fixedly installed on the outer wall of the pressure relief pipe.

[0012] Preferably, the outer wall of the connecting pipe head is provided with a communication port that communicates with the auxiliary material pipe.

[0013] Preferably, multiple rubber strips are fixedly installed on the inner sidewall of the half-tile plate.

[0014] Preferably, the outer wall of the sphere has a flow hole that communicates with the inner cavity of the plastic valve body.

[0015] Preferably, the auxiliary support pipe and the two auxiliary material pipes are located on the same plane.

[0016] The beneficial effects of this utility model are as follows:

[0017] The main passage is precisely switched on and off by rotating the ball, while the auxiliary material pipe provides a stable auxiliary passage. The first switch valve body can flexibly control the opening and closing of the auxiliary passage. The combination of the support ring pipe, side support plate, half tile plate and bolt pair can firmly connect the auxiliary material pipe and the auxiliary support pipe, enhancing the overall structure. The rubber strip prevents wear at the connection points, and the tee pipe and pressure relief pipe can discharge excessive pressure in time, ensuring pipeline safety. The whole system is adaptable to various media control scenarios, improving the reliability of use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a plastic ball valve proposed in this utility model;

[0019] Figure 2 This is a front sectional view of the auxiliary support tube in a plastic ball valve proposed in this utility model;

[0020] Figure 3 This is a top view of a half-plate in a plastic ball valve according to the present invention.

[0021] In the diagram: 1. Plastic valve body; 2. Connecting pipe head; 3. Ball; 4. Auxiliary support pipe; 5. Valve stem; 6. Sub-material pipe; 7. First switch valve body; 8. Support ring pipe; 9. Side support plate; 10. Half tile plate; 11. Bolt pair; 12. Mounting threaded hole; 13. T-pipe; 14. Pressure relief pipe; 15. Second switch valve body; 16. Connecting port; 17. Rubber strip; 18. Flow hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-3A plastic ball valve includes a plastic valve body 1 and connecting pipe heads 2 fixed at both ends of the valve body 1. A ball 3 is rotatably connected inside the plastic valve body 1. An auxiliary support pipe 4 is fixedly installed on the top of the plastic valve body 1. A valve stem 5 is fixedly installed on the top of the ball 3. The valve stem 5 is rotatably connected to the inner wall of the auxiliary support pipe 4. A secondary material pipe 6 is fixedly installed on the top of the connecting pipe head 2. A first switch valve body 7 is fixedly installed on the outer wall of the secondary material pipe 6. A support ring pipe 8 is slidably sleeved on the outer wall of the secondary material pipe 6. A side support plate 9 is fixedly installed on the outer wall of the support ring pipe 8. A half-tile plate 10 is fixedly installed at the end of the side support plate 9. The two half-tile plates 10 are fixedly connected to the outer wall of the auxiliary support pipe 4 by multiple bolt pairs 11.

[0024] To further explain, the rotation of the ball 3 within the plastic valve body 1 controls the opening and closing of the main passage, while the auxiliary material pipe 6 provides an auxiliary passage, which is controlled by the first switch valve body 7. The support ring pipe 8, side support plate 9, half tile plate 10, and bolt pair 11 work together to securely connect the auxiliary material pipe 6 and the auxiliary support pipe 4, thereby enhancing the overall structural stability.

[0025] like Figure 2 As shown, the valve stem 5 has a threaded mounting hole 12 at its top.

[0026] To further explain, the threaded hole 12 facilitates the installation of components such as the operating handle on the top of the valve stem 5, making it easier to rotate the ball 3 and improving ease of use.

[0027] like Figure 1 and Figure 2 As shown, a three-way pipe 13 is fixedly installed on the outer wall of the auxiliary material pipe 6, a pressure relief pipe 14 is fixedly installed on the outer wall of the three-way pipe 13, and a second switch valve body 15 is fixedly installed on the outer wall of the pressure relief pipe 14.

[0028] To further explain, the three-way pipe 13 and the pressure relief pipe 14 can release pressure by opening the second switch valve body 15 when the pipeline pressure is too high, so as to avoid pipeline damage due to excessive pressure and improve the safety of use.

[0029] like Figure 1 and Figure 2 As shown, a connecting port 16 that communicates with the auxiliary material pipe 6 is provided on the outer wall of the connecting pipe head 2.

[0030] To further explain, the connecting port 16 allows the medium in the connecting pipe head 2 to smoothly enter the auxiliary material pipe 6, ensuring smooth medium flow in the auxiliary passage and ensuring that the auxiliary material pipe 6 functions properly.

[0031] like Figure 3 As shown, multiple rubber strips 17 are fixedly installed on the inner wall of the half-tile plate 10.

[0032] To further explain, the rubber strip 17 increases the friction between the half-tile plate 10 and the auxiliary support tube 4, improving the connection firmness while avoiding rigid contact that could cause component wear.

[0033] like Figure 1 As shown, a flow hole 18 is provided on the outer wall of the sphere 3, which communicates with the inner cavity of the plastic valve body 1.

[0034] To further explain, the material flow hole 18 is fitted with the inner cavity of the plastic valve body 1. When the ball 3 rotates, it can control the material flow hole 18 to be aligned with or staggered from the main passage, so as to accurately control the flow of the medium and ensure the on / off effect.

[0035] like Figure 1 and Figure 2 As shown, the auxiliary support pipe 4 and the two auxiliary material pipes 6 are located on the same plane.

[0036] To further explain, the auxiliary support pipe 4 and the two auxiliary material pipes 6 are arranged in the same plane, which makes the force on each component more balanced, improves the stability and compactness of the overall structure, and facilitates installation and use.

[0037] The functional principle of this utility model can be explained through the following operation methods:

[0038] The user selects an operating handle that matches the threaded hole 12 at the top of the valve stem 5, aligns the threaded rod at the bottom of the handle with the threaded hole, and rotates clockwise until the handle is securely connected to the valve stem 5, ensuring that the valve stem 5 can rotate synchronously and stably without any loosening or jamming when the handle is turned.

[0039] Align the connecting pipe ends 2 at both ends of the plastic ball valve with the interfaces of the external main pipeline, and fix them by means of flange connection or threaded connection. During the connection process, ensure that the sealing gasket is installed in place to prevent medium leakage. Then check whether the support ring pipe 8 is tightly fitted on the outer wall of the auxiliary material pipe 6, and whether the connection between the side support plate 9 and the half tile plate 10 is stable. Then tighten the bolt pair 11 between the two half tile plates 10 one by one, so that the half tile plate 10 is firmly attached to the outer wall of the auxiliary support pipe 4, ensuring that there is no relative shaking between the auxiliary material pipe 6 and the auxiliary support pipe 4.

[0040] If it is necessary to transport the medium through the main passage, hold the installed operating handle and rotate it clockwise or counterclockwise (depending on the initial position of the ball 3). Observe the rotation of the ball 3 until the flow hole 18 on the ball 3 is completely aligned with the inner cavity of the plastic valve body 1. At this time, the main passage is fully open, and the medium flows into the plastic valve body 1 from one end of the connecting pipe 2 and flows out smoothly from the other end of the connecting pipe 2 through the flow hole 18.

[0041] If the auxiliary passage is required, locate the first switch valve body 7 on the outer wall of the auxiliary material pipe 6, rotate its operating component (such as a handle or knob) to open the internal channel of the first switch valve body 7, and part of the medium in the main passage will enter the auxiliary material pipe 6 through the connecting port 16 on the connecting pipe head 2 to realize the auxiliary transport of the medium; when the auxiliary transport is not required, rotate the operating component of the first switch valve body 7 in the opposite direction to close its internal channel, and the auxiliary passage can be cut off.

[0042] When the pressure in the pipeline is abnormally high, locate the pressure relief pipe 14 on the outer wall of the three-way pipe 13, rotate the operating component of the second switch valve body 15 on the pressure relief pipe 14 to open the second switch valve body 15, and some of the medium in the pipeline will flow into the pressure relief pipe 14 through the three-way pipe 13 and be discharged. After the pressure returns to normal, rotate the operating component in the opposite direction to close the second switch valve body 15 and stop the pressure relief.

[0043] If it is necessary to stop the medium delivery, hold the operating handle and rotate it in the opposite direction so that the material outlet 18 on the ball 3 is completely misaligned with the inner cavity of the plastic valve body 1. The solid part of the ball 3 will block the inner cavity of the plastic valve body 1, the main passage will be closed, and the medium delivery will stop. At this time, it can be observed that the medium flow is completely interrupted.

[0044] After use, first confirm that the main passage is closed, then close the first switch valve body 7 and the second switch valve body 15 in sequence to ensure that all passages are closed to avoid leakage of residual media. At the same time, check whether all connection parts are intact to prepare for the next use.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plastic ball valve, comprising a plastic valve body (1) and connecting pipe heads (2) fixed at both ends thereof, characterized in that: The plastic valve body (1) is rotatably connected to a ball (3), and an auxiliary support tube (4) is fixedly installed on the top of the plastic valve body (1). A valve stem (5) is fixedly installed on the top of the ball (3), and the valve stem (5) is rotatably connected to the inner wall of the auxiliary support tube (4). A secondary material pipe (6) is fixedly installed on the top of the connecting pipe head (2), and a first switch valve body (7) is fixedly installed on the outer side wall of the secondary material pipe (6). A support ring pipe (8) is slidably sleeved on the outer wall of the auxiliary material pipe (6). A side support plate (9) is fixedly installed on the outer wall of the support ring pipe (8). A half tile plate (10) is fixedly installed at the end of the side support plate (9). The two half tile plates (10) are fixedly connected to the outer wall of the auxiliary support pipe (4) by multiple bolt pairs (11).

2. A plastic ball valve according to claim 1, wherein The valve stem (5) has a threaded hole (12) at the top.

3. A plastic ball valve according to claim 1, wherein A three-way pipe (13) is fixedly installed on the outer wall of the auxiliary material pipe (6), a pressure relief pipe (14) is fixedly installed on the outer wall of the three-way pipe (13), and a second switch valve body (15) is fixedly installed on the outer wall of the pressure relief pipe (14).

4. A plastic ball valve according to claim 1, wherein The outer wall of the connecting pipe head (2) is provided with a communication port (16) that communicates with the auxiliary material pipe (6).

5. A plastic ball valve according to claim 1, characterized in that, Multiple rubber strips (17) are fixedly installed on the inner wall of the half-tile plate (10).

6. A plastic ball valve according to claim 1, characterized in that, The outer wall of the sphere (3) is provided with a flow hole (18) that communicates with the inner cavity of the plastic valve body (1).

7. A plastic ball valve according to claim 1, characterized in that, The auxiliary support pipe (4) and the two auxiliary material pipes (6) are located on the same plane.

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