A rotary plug valve

Abstract

This utility model provides a rotary stop valve, belonging to the field of stop valve technology. It solves the problem of insufficient compactness in the structure of existing stop valves. This utility model includes a valve body, a valve plug, a valve handle, an inlet pipe, and a filter. The valve body is generally a stepped cylinder with a larger upper section and a smaller lower section, and the internal chamber has a conical structure with a larger upper section and a smaller lower section. A three-way connector is formed at the lower end of the valve body. A mounting lug extends outward from the middle of the valve body, forming an inlet pipe and a filter pipe between the mounting lug and the valve body. The mounting lug has an inlet through-hole and a filter through-hole. The valve plug has a conical structure and is installed inside the valve body. The inlet channel and the filter channel are connected to the inlet through-hole and the filter through-hole, respectively. A connecting body is formed at the upper end of the valve plug, and an operating groove is formed in the connecting body. An operating tooth is formed at the lower end of the valve handle, and the valve handle extends into the valve body, with the operating tooth connecting to the operating groove. This utility model has the advantages of compact structure and good sealing effect.

Description

Technical Field

[0001] This utility model belongs to the field of plug valve technology and relates to a rotary plug valve. Background Technology

[0002] Rotary plug valves control fluid flow by rotating the plug to change the position of the flow channel. When the plug channel is aligned with the valve body channel, fluid flows freely; when the channel is misaligned, fluid flow is blocked. They are easy to operate, have low fluid resistance, and can be opened and closed quickly.

[0003] Chinese patent publication number CN210770356U discloses a sealing plug valve for well control, including a plug valve, a rotating rod, a valve core, a handle, and a first filter screen. The plug valve has a rotating rod at the top, and a welded column is welded to one side of the top of the rotating rod. A connecting sleeve is installed at one end of the welded column through a flange. A handle is provided on one side of the connecting sleeve. A sliding groove is opened in the connecting sleeve, and a locking block is slidably provided in the sliding groove. An installation ear is welded to one side of the locking block. One end of the handle passes through the connecting sleeve and is rotatably connected to the installation ear through a rotating shaft. The plug valve has a valve core inside, and a drain channel is opened on the valve core. A first filter screen is welded to both ends of the drain channel. The bottom end of the rotating rod is sleeved on the top of the valve core.

[0004] In the well control sealing plug valve provided by this patent, the rotating rod is connected to the connecting sleeve through a welded column and a flange. This connection method is relatively complicated, which increases the lateral dimension of the valve top and the number of parts, making the overall structure less compact. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a rotary valve-type plug valve.

[0006] The objective of this utility model can be achieved through the following technical solution: A rotary valve includes a valve body, a valve plug, a valve handle, an inlet pipe, and a filter. The valve body is generally a stepped cylinder with a larger upper section and a smaller lower section, and the internal cavity of the valve body has a conical structure with a larger upper section and a smaller lower section. A three-way connector is formed at the lower end of the valve body, the three-way connector including a main working interface, a spare interface, and a vent interface. A mounting lug extends outward from the middle of the valve body, and an inlet pipe and a filter pipe are formed between the mounting lug and the valve body. The mounting lug has an inlet through hole and a filter. The valve plug has a through-hole, and the inlet pipe and filter extend into the inlet through-hole and the filter through-hole respectively and are connected to the mounting lug. The valve plug has a conical structure and is installed inside the valve body. The valve body has an inlet channel and a filter channel, which are connected to the inlet through-hole and the filter through-hole respectively. The valve plug has an inlet connecting hole and a filter connecting hole. The upper end of the valve plug has a connecting body with an operating groove. The lower end of the valve handle has an operating tooth, which extends into the valve body and the operating tooth is connected to the operating groove.

[0007] In the aforementioned rotary plug valve, a first spring groove is provided in the middle of the operating groove, a second spring groove is provided in the middle of the operating teeth, and a spring cavity is provided inside the lower end of the valve handle. A valve spring is installed in the first spring groove, the second spring groove, and the spring cavity.

[0008] In the aforementioned rotary plug valve, a sealing groove is provided on the outer end face of the mounting lug, and a sealing plate is adapted to be connected in the sealing groove. The sealing plate is sleeved at the connection between the inlet pipe and the filter and the mounting lug.

[0009] In the aforementioned rotary plug valve, a sealing ring is installed between the lower end of the valve handle and the upper end of the valve plug.

[0010] In the aforementioned rotary plug valve, a maintenance interface is formed at the upper end of the valve body, and a bolt is installed through the maintenance interface.

[0011] In the aforementioned rotary valve, the inlet and filter holes of the mounting lug are provided with connection holes on both sides.

[0012] In the aforementioned rotary valve, a water outlet pipe is fixedly connected to the main working interface.

[0013] Compared with the prior art, the rotary plug valve provided by this utility model has the following advantages: 1. The mounting lug extending outward from the middle of the valve body forms an integral structure with the inlet pipe and the filter pipe. The inlet and filter through holes in the mounting lug are respectively connected to the inlet channel and filter channel inside the valve body. This design tightly integrates the inlet pipe, filter and valve body, reducing the length and complexity of the external connection pipe, thus making the entire valve structure more compact; 2. The operating teeth at the lower end of the valve handle are connected to the operating groove in the upper end of the valve plug connector. This connection method is direct and simple. 1. The handle effectively transmits the rotational motion of the handle to the valve plug, enabling the valve to open and close. 2. A sealing groove is opened on the outer end face of the mounting ear plate and a sealing plate is adapted to it. The sealing plate is directly fitted onto the connection between the inlet pipe, the filter and the mounting ear plate, which can prevent the medium from leaking from the gap between the pipe and the ear plate. A sealing ring is installed between the lower end of the valve handle and the upper end of the valve plug, which can isolate the internal cavity of the valve body from the external environment and prevent the medium from overflowing from the gap between the handle and the valve plug. The mating surface between the conical cavity and the conical valve plug is inclined. When rotating, the valve plug and the cavity wall can form a uniform contact pressure, further improving the sealing effect of the flow channel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the valve body;

[0017] Figure 4 This is a schematic diagram of the valve plug structure;

[0018] Figure 5 This is a schematic diagram of the valve handle structure.

[0019] In the diagram: 1. Valve body; 11. Main working interface; 12. Spare interface; 13. Vent interface; 14. Mounting lug; 141. Water inlet hole; 142. Filter hole; 143. Sealing groove; 144. Connection hole; 15. Water inlet pipe; 151. Water inlet channel; 16. Filter pipe; 161. Filter channel; 17. Maintenance interface; 2. Valve plug; 21. Water inlet connecting hole; 22. Filter connecting hole; 23. Connector; 231. Operating groove; 232. First spring groove; 3. Valve handle; 31. Operating tooth; 32. Second spring groove; 33. Spring cavity; 4. Inlet pipe; 5. Filter; 6. Valve spring; 7. Sealing plate; 8. Sealing ring; 9. Bolt; 10. Water outlet pipe. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figures 1 to 5 As shown, this embodiment includes a valve body 1, a valve plug 2, a valve handle 3, an inlet pipe 4, and a filter 5. The valve body 1 is generally a stepped cylinder with a larger upper part and a smaller lower part, and the internal chamber has a conical structure with a larger upper part and a smaller lower part, which fits into the valve plug 2. The lower end of the valve body 1 is integrally formed with a three-way connector, which includes a main working interface 11, a spare interface 12, and a vent interface 13, which can flexibly switch the fluid passage according to the actual working conditions. The middle part of the valve body 1 extends outward to form a mounting ear plate 14, which is connected to the valve body 1. The valve body 1 is integrally formed with an inlet pipe body 15 and a filter pipe body 16. The mounting ear plate 14 has corresponding inlet through holes 141 and 142. The inlet pipe 4 and the filter 5 extend into the inlet through holes 141 and 142 respectively and are fixedly connected to the mounting ear plate 14. The valve body 1 has an inlet channel 151 and a filter channel 161 inside. The inlet channel 151 is connected to the inlet through hole 141, and the filter channel 161 is connected to the filter through hole 142, forming a complete fluid transport path.

[0022] like Figures 1 to 5As shown, the valve plug 2 has a conical structure that is adapted to the internal cavity of the valve body 1. The valve plug 2 is installed in the internal cavity of the valve body 1. The valve plug 2 has a water inlet communication hole 21 and a filter communication hole 22 for controlling the flow and switching of fluid. A connecting body 23 is formed at the upper end of the valve plug 2. An operating groove 231 is formed in the connecting body 23. An operating tooth 31 adapted to the operating groove 231 is formed at the lower end of the valve handle 3. The valve handle 3 extends into the valve body 1 and the operating tooth 31 engages with the operating groove 231 to realize the synchronous drive of the valve plug 2 by the valve handle 3.

[0023] like Figures 2 to 5 As shown, the operating groove 231 has a first spring groove 232 in the middle, the operating tooth 31 has a second spring groove 32 in the middle, and the valve handle 3 has a spring cavity 33 inside the lower end. The valve spring 6 is installed in the space formed by the first spring groove 232, the second spring groove 32 and the spring cavity 33. The spring force ensures that the operating tooth 31 and the operating groove 231 are always in close contact, so as to avoid the transmission gap from affecting the operating accuracy.

[0024] To elaborate further, such as Figure 2 As shown, a sealing groove 143 is provided on the outer end face of the mounting ear plate 14. A sealing plate 7 is adapted to be installed in the sealing groove 143. The sealing plate 7 is sleeved at the connection between the inlet pipe 4 and the filter 5 and the mounting ear plate 14 to enhance the sealing performance of the connection and prevent fluid leakage. A sealing ring 8 is installed between the lower end of the valve handle 3 and the upper end of the valve plug 2 to further improve the sealing effect of the upper part of the valve body 1.

[0025] To elaborate further, such as Figure 1 As shown, a maintenance interface 17 is formed at the upper end of the valve body 1, and a bolt 9 is installed through the maintenance interface 17 to facilitate disassembly for internal maintenance when needed.

[0026] To elaborate further, such as Figure 2 As shown, the water inlet hole 141 and filter hole 142 of the mounting ear plate 14 are provided with connection holes 144 on both sides. The connection holes 144 are used to connect this embodiment with external connecting components.

[0027] To elaborate further, such as Figures 1 to 2 As shown, a water outlet pipe 10 is fixedly connected to the main working interface 11, which facilitates connection with the external pipeline system.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0029] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A rotary plug valve, comprising a valve body (1), a valve plug (2), a valve handle (3), an inlet pipe (4), and a filter (5), characterized in that: The valve body (1) is a stepped cylindrical shape with a larger upper part and a smaller lower part, and the internal cavity of the valve body (1) is a conical structure with a larger upper part and a smaller lower part. A three-way connector is formed at the lower end of the valve body (1). The three-way connector includes a main working interface (11), a spare interface (12), and a vent interface (13). A mounting ear plate (14) extends outward from the middle of the valve body (1). An inlet pipe (15) and a filter pipe (16) are formed between the mounting ear plate (14) and the valve body (1). An inlet through hole (141) and a filter through hole (142) are opened in the mounting ear plate (14). The inlet pipe (4) and the filter (5) extend into the inlet through hole (141) and the filter through hole (142) respectively and are connected to the mounting ear plate (14). The valve plug (2) is a cone-shaped structure and is installed inside the valve body (1). The valve body (1) has an inlet channel (151) and a filter channel (161) inside. The inlet channel (151) and the filter channel (161) are connected to the inlet through hole (141) and the filter through hole (142) respectively. The valve plug (2) has an inlet connecting hole (21) and a filter connecting hole (22). The upper end of the valve plug (2) has a connecting body (23) and an operating groove (231) is formed in the connecting body (23). The lower end of the valve handle (3) has an operating tooth (31). The valve handle (3) extends into the valve body (1) and the operating tooth (31) is connected to the operating groove (231).

2. The rotary valve according to claim 1, characterized in that: The operating groove (231) has a first spring groove (232) in the middle, the operating tooth (31) has a second spring groove (32) in the middle, and the valve handle (3) has a spring cavity (33) inside the lower end. A valve spring (6) is installed in the first spring groove (232), the second spring groove (32) and the spring cavity (33).

3. A rotary valve according to claim 1, characterized in that: The outer end face of the mounting ear plate (14) is provided with a sealing groove (143), and a sealing plate (7) is adapted to be connected in the sealing groove (143). The sealing plate (7) is sleeved at the connection between the inlet pipe (4) and the filter (5) and the mounting ear plate (14).

4. A rotary valve according to claim 1, characterized in that: A sealing ring (8) is installed between the lower end of the valve handle (3) and the upper end of the valve plug (2).

5. A rotary valve according to claim 1, characterized in that: A maintenance interface (17) is formed at the upper end of the valve body (1), and a bolt (9) is installed through the maintenance interface (17).

6. A rotary valve according to claim 1, characterized in that: The mounting ear plate (14) has connection holes (144) on both sides of the water inlet hole (141) and the filter hole (142).

7. A rotary valve according to claim 1, characterized in that: The main working interface (11) is fixedly connected to a water outlet pipe (10).

Images