A type of external threaded ball valve

Abstract

This utility model discloses an external threaded ball valve, including a valve body with a pair of first sealing rings inside. A valve core is rotatably connected between the pair of first sealing rings. A hollow seat is fixedly connected to the top of the valve body, and a fixing bolt fixed to the valve core is inserted into the hollow seat. A support is fixedly connected to the bottom of the fixing bolt, and a second sealing ring is provided on the support. A first fixing cap, a handle, and a second fixing cap are sequentially screwed onto the fixing bolt. The valve also includes a processing component disposed within the hollow seat. The processing component includes a rod that expands the second sealing ring when it moves downward within the hollow seat. The processing component includes a hole in the second sealing ring and a through hole in the first fixing cap. The rod and the through hole are threadedly connected, and the bottom end of the rod contacts the edge of the hole. This utility model, by providing a processing component including a rod, a cone, and a through hole, can effectively improve the sealing performance of the second sealing ring.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to an external thread ball valve. Background Technology

[0002] External threaded ball valves, as a common fluid control component, are mainly used for shutting off and connecting pipeline systems. However, traditional external threaded ball valves have some shortcomings: the sealing performance between the valve core and the valve body needs improvement; with prolonged use, the sealing ring is prone to wear or aging, leading to media leakage and affecting the safety and reliability of the pipeline system; in addition, the installation and maintenance of existing external threaded ball valves are relatively complex, requiring specialized tools and personnel, increasing maintenance costs and time. Therefore, a new type of external threaded ball valve is proposed to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an external thread ball valve.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: an external threaded ball valve, comprising a valve body, wherein a pair of first sealing rings are disposed within the valve body, a valve core is rotatably connected between the pair of first sealing rings, a hollow seat is fixedly connected to the top of the valve body, and a fixing bolt fixed to the valve core is inserted into the hollow seat, a support is fixedly connected to the bottom of the fixing bolt, a second sealing ring is disposed on the support, and a first fixing cap, a handle, and a second fixing cap are sequentially screwed onto the fixing bolt; it also includes a processing component disposed within the hollow seat, the processing component including a rod, which expands the second sealing ring when it moves downward within the hollow seat.

[0005] As a further improvement to the above technical solution: the processing component includes an insertion hole on the second sealing ring and a through hole in the first fixing cap. The insertion rod and the through hole are threaded together, and the bottom end of the insertion rod contacts the edge of the insertion hole. A slot is provided at the top end of the insertion rod, and a cone head is fixedly connected to the bottom end of the insertion rod. The top end of the insertion hole gradually expands outward to form a conical opening. At least two spring pieces are fixedly connected between the insertion rod and the cone head. The spring pieces are made of elastic material. When the insertion rod moves down, the cone head is inserted into the insertion hole, and the two spring pieces expand at the same time.

[0006] The bottom end of the first fixing cap abuts against the second sealing ring, and a gasket is provided between the first fixing cap and the handle; a retaining plate is fixedly connected to the bottom end of the support, and a retaining groove matching the size of the retaining plate is opened at the top end of the valve core.

[0007] As a further description of the above technical solution:

[0008] This utility model has the following beneficial effects:

[0009] 1. Compared with the prior art, this external thread ball valve, by setting up processing components including a rod, a cone, and a through hole, can effectively improve the sealing performance of the second sealing ring. When it is necessary to enhance the sealing effect, the rod is rotated to move downward, and the cone is inserted into the hole, forcing the second sealing ring to expand, thereby tightly fitting the valve body and forming a multi-layer sealing structure, effectively preventing media leakage. Therefore, if there is water leakage at the valve body switch, there is no need to disassemble and replace the valve body, and maintenance can be carried out quickly through the above method.

[0010] 2. Compared with existing technologies, this external thread ball valve is easy to install and maintain by setting up processing components. The valve core can be fixed and the sealing can be enhanced by simple operations such as rotating the handle and inserting the rod. No complicated tools or professional personnel are required, which reduces maintenance costs and time and improves work efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of an external thread ball valve proposed in this utility model;

[0012] Figure 2 This is a cross-sectional structural diagram of an external threaded ball valve proposed in this utility model;

[0013] Figure 3 This is a schematic diagram of the insert structure of an external threaded ball valve proposed in this utility model;

[0014] Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle;

[0015] Figure 5 for Figure 2 Enlarged structural diagram at point B.

[0016] Legend:

[0017] 1. Valve body; 2. First sealing ring; 3. Valve core; 4. Hollow seat; 5. Fixing bolt; 6. Support; 7. Second sealing ring; 8. First fixing cap; 9. Handle; 10. Second fixing cap; 11. Through hole; 12. Insert rod; 13. Conical head; 14. Spring; 15. Slot; 16. Insertion hole; 17. Conical opening. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-5 This utility model provides an external threaded ball valve, comprising a valve body 1, a pair of first sealing rings 2 disposed inside the valve body 1, a valve core 3 rotatably connected between the pair of first sealing rings 2, a hollow seat 4 fixedly connected to the top of the valve body 1, and a fixing bolt 5 fixed to the valve core 3 inserted into the hollow seat 4, a support 6 fixedly connected to the bottom of the fixing bolt 5, a second sealing ring 7 disposed on the support 6, and a first fixing cap 8, a handle 9, and a second fixing cap 10 screwed sequentially onto the fixing bolt 5; and a processing component disposed inside the hollow seat 4, the processing component including a rod 12, which expands the second sealing ring 7 when the rod 12 moves downward inside the hollow seat 4.

[0020] The processing component includes an insertion hole 16 formed on the second sealing ring 7 and a through hole 11 formed in the first fixing cap 8. The insertion rod 12 is threadedly connected to the through hole 11, and the bottom end of the insertion rod 12 contacts the edge of the insertion hole 16. A slot 15 is formed at the top end of the insertion rod 12, and a cone 13 is fixedly connected to the bottom end of the insertion rod 12. The top end of the insertion hole 16 gradually expands outward to form a conical opening 17. At least two spring pieces 14 are fixedly connected between the insertion rod 12 and the cone 13. The spring pieces 14 are made of elastic material. When the insertion rod 12 moves down, the cone 13 is inserted into the insertion hole 16, and at the same time, the two spring pieces 14 expand.

[0021] In use, an external tool is inserted into the slot 15, and the insert rod 12 is rotated to move downward within the hollow seat 4. The cone 13 at the bottom of the insert rod 12 is inserted into the insertion hole 16 on the second sealing ring 7. As the insert rod 12 moves downward, the cone 13 applies pressure to the edge of the insertion hole 16, forcing the second sealing ring 7 to expand outward and fit tightly against the inner wall of the valve body 1, thereby enhancing the sealing performance. At the same time, the spring piece 14 between the insert rod 12 and the cone 13 is made of elastic material and expands during the downward movement, further improving the sealing effect.

[0022] The conical opening 17 serves to guide the conical head 13 to be precisely inserted into the insertion hole 16, ensuring that the conical head 13 can smoothly enter the insertion hole 16 and apply uniform pressure along the opening of the insertion hole 16 during the downward movement of the insertion rod 12. This effectively promotes the expansion of the second sealing ring 7 and enhances the sealing performance. At the same time, the conical opening 17 also provides a certain centering and guiding function, ensuring the coaxiality of the insertion rod 12 and the insertion hole 16, making the sealing effect more uniform. In addition, the conical opening 17 can also reduce the frictional resistance experienced by the insertion rod 12 during insertion, extending the service life of the component.

[0023] The bottom end of the first fixing cap 8 abuts against the second sealing ring 7, and a gasket is provided between the first fixing cap 8 and the handle 9; a card plate is fixedly connected to the bottom end of the support 6, and a slot matching the size of the card plate is opened at the top of the valve core 3.

[0024] Working principle: When enhanced sealing is required, an external tool is inserted into the slot 15 and the insert rod 12 is rotated to move downward within the hollow seat 4. The cone 13 at the bottom of the insert rod 12 is inserted into the insertion hole 16 on the second sealing ring 7. As the insert rod 12 moves downward, the cone 13 applies pressure to the edge of the insertion hole 16, forcing the second sealing ring 7 to expand outward and tightly fit the inner wall of the valve body 1, thereby enhancing the sealing performance. At the same time, the spring piece 14 between the insert rod 12 and the cone 13 is made of elastic material and expands during the downward movement, further improving the sealing effect.

[0025] 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. An external threaded ball valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a pair of first sealing rings (2), and a valve core (3) is rotatably connected between the pair of first sealing rings (2). A hollow seat (4) is fixedly connected to the top of the valve body (1), and a fixing bolt (5) fixed to the valve core (3) is inserted into the hollow seat (4). A support (6) is fixedly connected to the bottom of the fixing bolt (5). A second sealing ring (7) is provided on the support (6). A first fixing cap (8), a handle (9), and a second fixing cap (10) are screwed onto the fixing bolt (5) in sequence. It also includes a processing component disposed within the hollow seat (4), the processing component including a rod (12) which expands the second sealing ring (7) when the rod (12) is displaced downward within the hollow seat (4).

2. The external threaded ball valve according to claim 1, characterized in that: The processing assembly includes an insertion hole (16) on the second sealing ring (7) and a through hole (11) in the first fixing cap (8). The insertion rod (12) and the through hole (11) are threaded together, and the bottom end of the insertion rod (12) contacts the edge of the insertion hole (16).

3. The external threaded ball valve according to claim 2, characterized in that: The top of the insertion rod (12) is provided with a slot (15), and the bottom of the insertion rod (12) is fixedly connected with a cone head (13), and the top of the insertion hole (16) gradually expands outward to form a cone-shaped opening (17).

4. The external threaded ball valve according to claim 3, characterized in that: At least two spring pieces (14) are fixedly connected between the insert rod (12) and the cone (13). The spring pieces (14) are made of elastic material. When the insert rod (12) moves down, the cone (13) is inserted into the insertion hole (16), and the two spring pieces (14) expand at the same time.

5. The external threaded ball valve according to claim 4, characterized in that: The bottom end of the first fixing cap (8) and the second sealing ring (7) are in contact with each other, and a gasket is provided between the first fixing cap (8) and the handle (9).

6. The external threaded ball valve according to claim 4, characterized in that: The bottom end of the support (6) is fixedly connected to a card plate, and the top end of the valve core (3) is provided with a card groove that matches the size of the card plate.

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