A manual PVC double-side sealing ball valve with handle convenient to replace

Abstract

This utility model discloses a manual PVC double-sided ball valve with an easy-to-replace handle, relating to the field of valve bodies. The device includes a valve body and a handle. A valve stem is rotatably mounted in the valve body. An annular groove is formed on the outer wall of the valve stem. An installation groove penetrating the top of the valve stem and a connecting groove not penetrating the top of the valve stem are formed on the outer wall of the annular groove. A connecting part is integrally formed at the bottom of the handle. The connecting part is movably sleeved on the outside of the valve stem. A connecting protrusion is integrally formed in the connecting part. A spring is provided between the connecting part and the valve stem. After the connecting protrusion enters the annular groove downward along the installation groove, it is aligned with the connecting groove by screwing. Under the action of the spring, the connecting protrusion naturally moves upward and is kept confined in the connecting groove. Then, an elastic retaining ring is installed on the outer wall of the valve stem. The elastic retaining ring supports the bottom of the connecting part, so that the handle cannot be pressed down and moved in its natural state, avoiding accidental detachment during use. At the same time, it is convenient and quick to disassemble and assemble without tools when the handle is damaged.

Description

Technical Field

[0001] This utility model relates to the field of valve bodies, and in particular to a manual PVC double-sided ball valve with an easy-to-change handle. Background Technology

[0002] The PVC double-sided ball valve is a type of ball valve with quick-release connectors at both ends. These quick-release connectors allow for quick assembly and disassembly from pipelines. The valve body is primarily made of PVC material, including the handle on the top of the valve body.

[0003] However, in some cold regions or during winter, as the outside temperature drops below zero, valves are prone to freezing and seizing up. Low temperatures also make PVC material brittle, and the handle can easily break when turning. Most PVC double-sided ball valves currently on the market use screws to install the handles, which requires special tools for disassembly. Frequent disassembly can also cause stripping and damage to the PVC threads, making it impossible to secure them properly later. Therefore, a manual PVC double-sided ball valve with an easy-to-replace handle is provided. Utility Model Content

[0004] The purpose of this invention is to provide a manual PVC double-sided ball valve with an easy-to-change handle, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a manual PVC double-sided ball valve with an easy-to-replace handle, comprising a valve body and a handle installed on the top of the valve body. A valve stem is rotatably disposed in the valve body. An annular groove is formed on the outer wall of the valve stem. An installation groove penetrating the top of the valve stem and a connecting groove not penetrating the top of the valve stem are formed on the outer wall of the annular groove. A connecting part is integrally formed at the bottom of the handle. The connecting part is movably sleeved on the outside of the valve stem. A connecting protrusion is integrally formed in the connecting part. A spring is disposed between the connecting part and the valve stem. The connecting protrusion enters the annular groove downward along the installation groove and is aligned with the connecting groove by screwing. Under the action of the spring, the connecting protrusion naturally moves upward and is kept confined in the connecting groove, so that the handle drives the valve stem to rotate synchronously through the connecting protrusion.

[0006] Preferably, an elastic retaining ring is installed on the outer wall of the bottom end of the valve stem, and the elastic retaining ring abuts against the bottom end of the connecting part so that the handle cannot move downward along the axial direction of the valve stem.

[0007] Preferably, the elastic retaining ring includes an open ring and a guide portion integrally formed at the open end of the open ring, and a pull ring integrally formed at the other end of the open ring.

[0008] Preferably, the elastic retaining ring is made of elastic engineering plastic.

[0009] Preferably, the valve stem has an assembly groove at its top, and the spring is installed in the assembly groove.

[0010] Preferably, the outer wall of the connecting part and the handle are integrally formed with reinforcing ribs.

[0011] Preferably, the valve body includes a valve seat and a valve core disposed in the valve seat, and the valve stem is coaxially mounted with the valve core.

[0012] Preferably, the valve seat is detachably fitted with heat-fusion connectors at both ends.

[0013] Preferably, the valve seat has external threaded heads integrally formed at both ends, and a threaded connector is installed on the outer surface of the external threaded head, and the hot-melt pipe is installed in the threaded connector.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] By fitting the connecting part onto the outer surface of the valve stem tip, with the connecting protrusion facing the mounting groove, pressing the handle downwards compresses the spring, causing the connecting protrusion to enter the annular groove along the mounting groove. Twisting the handle moves the connecting protrusion into the mounting groove. Releasing the handle causes it to spring upwards, allowing the connecting protrusion to remain inside the mounting groove. The spring keeps the connecting protrusion within the groove. The elastic retaining ring is then installed onto the outer wall of the valve stem via the guide, utilizing its elasticity to prevent it from detaching. The retaining ring supports the bottom of the connecting part, preventing the handle from being pressed down in its natural state, thus avoiding accidental detachment during use. It also allows for quick and tool-free disassembly and assembly in case of handle damage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall outer surface structure of this utility model;

[0017] Figure 2 This is an exploded view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the valve seat end face structure of this utility model;

[0019] Figure 4 This is an exploded view of the top structure of the valve seat of this utility model;

[0020] Figure 5 This is a schematic diagram of the outer surface structure of the elastic retaining ring of this utility model;

[0021] Figure 6 This is a schematic diagram of the bottom structure of the handle of this utility model.

[0022] In the diagram: 1. Valve body; 11. Valve seat; 12. External threaded head; 13. Valve stem; 14. Threaded connector; 15. Heat fusion connector; 16. Valve core; 17. Assembly groove; 18. Mounting groove; 19. Annular groove; 110. Connecting groove; 2. Handle; 22. Connecting part; 23. Reinforcing rib; 24. Connecting protrusion; 3. Elastic retaining ring; 31. Open ring; 32. Pull ring; 33. Guide part; 4. Spring. Detailed Implementation

[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figures 1 to 6 The manual PVC double-sided ball valve with easy handle replacement is shown, including a valve body 1 and a handle 2 installed on the top of the valve body 1. A valve stem 13 is rotatably disposed in the valve body 1. An annular groove 19 is formed on the outer wall of the valve stem 13. An installation groove 18 penetrating the top of the valve stem 13 and a connecting groove 110 not penetrating the top of the valve stem 13 are formed on the outer wall of the annular groove 19. A connecting part 22 is integrally formed at the bottom of the handle 2. The connecting part 22 is movably sleeved on the outside of the valve stem 13. A connecting protrusion 24 is integrally formed in the connecting part 22. A spring 4 is provided between the connecting part 22 and the valve stem 13. The connecting protrusion 24 enters the annular groove 19 along the installation groove 18 and is aligned with the connecting groove 110 by screwing. Under the action of the spring 4, the connecting protrusion 24 naturally moves upward and is kept confined in the connecting groove 110, so that the handle 2 drives the valve stem 13 to rotate synchronously through the connecting protrusion 24.

[0025] An elastic retaining ring 3 is installed on the outer wall of the bottom end of the valve stem 13. The elastic retaining ring 3 abuts against the bottom end of the connecting part 22 so that the handle 2 cannot move downward along the axial direction of the valve stem 13.

[0026] The elastic retaining ring 3 includes an open ring 31 and a guide portion 33 integrally formed on the open end of the open ring 31. A pull ring 32 is integrally formed on the other end of the open ring 31. The elastic retaining ring 3 is made of elastic engineering plastic. For added safety, an elastic retaining ring 3 is installed on the outer wall of the bottom end of the valve stem 13 as a design redundancy to prevent detachment. The elastic retaining ring 3 is installed on the outer wall of the valve stem 13 via the guide portion 33, utilizing its own elasticity to keep it in place and prevent detachment. At this time, the entire elastic retaining ring 3 supports the bottom of the connecting portion 22, preventing the handle 2 from being pressed down or moved in its natural state, thus avoiding accidental detachment during use. During disassembly, the open ring 31 can be removed from the outer wall of the valve stem 13 by pulling the pull ring 32.

[0027] The valve stem 13 has an assembly groove 17 at the top, and the spring 4 is installed in the assembly groove 17 to prevent the spring 4 from being lost or falling off during disassembly.

[0028] A reinforcing rib 23 is integrally formed between the outer wall of the connecting part 22 and the handle 2 to improve the connection strength between the connecting part 22 and the handle 2 and reduce the risk of breakage.

[0029] The valve body 1 includes a valve seat 11 and a valve core 16 disposed in the valve seat 11. The valve stem 13 is coaxially mounted with the valve core 16, and rotating the handle 2 can drive the valve core 16 to rotate.

[0030] The valve seat 11 is detachably mounted with heat fusion connectors 15 at both ends. The heat fusion connectors 15 are installed with external pipes via hot melt adhesive. The valve seat 11 has an integrally formed external thread head 12 at both ends. A threaded connector 14 is installed on the outer surface of the external thread head 12. The heat fusion connector 15 is installed in the threaded connector 14. A sealing ring is set between the heat fusion connector 15 and the external thread head 12 to make the two seal together. When replacing the valve body 1 later, the valve seat 11 can be removed by screwing on the threaded connector 14.

[0031] Working principle: During installation, the device is installed by attaching two hot melt connectors 15 to the external pipeline with hot melt adhesive, and then the threaded connector 14 is threaded onto the outer surface of the external thread head 12. A sealing ring is used between the hot melt connector 15 and the external thread head 12 to make the two seal together, thereby quickly installing the entire valve seat 11 onto the pipeline. When replacing the valve body 1 later, the valve seat 11 can be removed and replaced by screwing on the threaded connector 14.

[0032] Furthermore, when installing the handle 2, by fitting the connecting part 22 onto the outer surface of the top of the valve stem 13 and making the connecting protrusion 24 face the mounting groove 18, the handle 2 is pressed down, causing the spring 4 to be compressed. At this time, the connecting protrusion 24 enters the annular groove 19 along the mounting groove 18. Then, the handle 2 is turned, causing the connecting protrusion 24 to move to the position of the connecting groove 110. At this time, the handle 2 is released, and under the action of the spring 4, the handle 2 springs up, causing the connecting protrusion 24 to enter the connecting groove 110. Under the action of the spring 4, the connecting protrusion 24 always remains inside the connecting groove 110. At this time, turning the handle 2 will cause the valve stem 13 to rotate synchronously. When disassembling, by pressing the handle 2 down and then turning it in the opposite direction, the connecting protrusion 24 moves to the position of the mounting groove 18. At this time, the spring 4 automatically pushes the handle 2 outward for removal.

[0033] Furthermore, for added safety, an elastic retaining ring 3 is installed on the outer wall of the bottom end of the valve stem 13 as a design redundancy to prevent it from falling off. The elastic retaining ring 3 is installed on the outer wall of the valve stem 13 through the guide part 33. Utilizing its own elasticity, it keeps the retaining ring on the outer wall of the valve stem 13 and prevents it from falling off. At this time, the entire elastic retaining ring 3 supports the bottom of the connecting part 22, so that the handle 2 cannot be pressed down and moved in its natural state. This avoids the situation of accidental falling off during use. When disassembling, the open ring 31 can be removed from the outer wall of the valve stem 13 by pulling the pull ring 32.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manually operated PVC double-sided ball valve with an easily replaceable handle, comprising a valve body (1) and a handle (2) mounted on the top of the valve body (1), characterized in that, A valve stem (13) is rotatably disposed in the valve body (1). An annular groove (19) is provided on the outer wall of the valve stem (13). An installation groove (18) penetrating the top of the valve stem (13) and a connecting groove (110) not penetrating the top of the valve stem (13) are provided on the outer wall of the annular groove (19). A connecting part (22) is integrally formed at the bottom of the handle (2). The connecting part (22) is movably sleeved on the outside of the valve stem (13). A connecting protrusion (24) is integrally formed in the connecting part (22). A spring (4) is provided between the connecting part (22) and the valve stem (13). The connecting protrusion (24) enters the annular groove (19) along the installation groove (18) and is aligned with the connecting groove (110) by screwing. Under the action of the spring (4), the connecting protrusion (24) naturally moves upward and is kept confined in the connecting groove (110), so that the handle (2) drives the valve stem (13) to rotate synchronously through the connecting protrusion (24).

2. The manual PVC double-sided ball valve with easily replaceable handle as described in claim 1, characterized in that, An elastic retaining ring (3) is installed on the bottom outer wall of the valve stem (13). The elastic retaining ring (3) abuts against the bottom end of the connecting part (22) so that the handle (2) cannot move downward along the axial direction of the valve stem (13).

3. A manually operated PVC double-sided ball valve with an easily replaceable handle as described in claim 2, characterized in that, The elastic retaining ring (3) includes an open ring (31) and a guide portion (33) integrally formed on the open end of the open ring (31), and a pull ring (32) integrally formed on the other end of the open ring (31).

4. A manual PVC double-sided ball valve with an easily replaceable handle as described in claim 3, characterized in that, The elastic retaining ring (3) is made of elastic engineering plastic.

5. A manually operated PVC double-sided ball valve with an easily replaceable handle as described in claim 1, characterized in that, The valve stem (13) has an assembly groove (17) at its top, and the spring (4) is installed in the assembly groove (17).

6. A manually operated PVC double-sided ball valve with an easily replaceable handle as described in claim 5, characterized in that, The outer wall of the connecting part (22) and the handle (2) are integrally formed with reinforcing ribs (23).

7. A manually operated PVC double-sided ball valve with an easily replaceable handle as described in claim 6, characterized in that, The valve body (1) includes a valve seat (11) and a valve core (16) disposed in the valve seat (11), and the valve stem (13) is coaxially mounted with the valve core (16).

8. A manually operated PVC double-sided ball valve with an easily replaceable handle as described in claim 7, characterized in that, The valve seat (11) is detachably fitted with heat-fusion pipes (15) at both ends.

9. A manually operated PVC double-sided ball valve with an easily replaceable handle as described in claim 8, characterized in that, The valve seat (11) has an external thread head (12) integrally formed at both ends. A threaded connector (14) is installed on the outer surface of the external thread head (12). The hot melt pipe (15) is installed in the threaded connector (14).

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