Spherical stop valve for fully mechanized coal mining face of underground coal mine

Abstract

The utility model relates to the technical field of design of stop valves, and discloses a spherical stop valve of an underground coal mine fully mechanized coal mining face, which comprises a mounting block, a valve pipe is arranged in the mounting block, a valve ball is arranged in the valve pipe, a groove is arranged in the mounting block, a through groove is arranged on the bottom side of the valve pipe, and the valve ball is arranged in the through groove. The through groove is located in the top side of the groove, an abutting assembly is arranged in the groove, a connecting block is fixedly connected to the right end of the top side of the mounting block, a transmission groove is formed in the connecting block, a connecting assembly is arranged in the transmission groove, and a limiting groove is formed in the front end of the left side of the connecting block. The top side of the limiting groove is connected with the transmission groove through a sliding groove. According to the utility model, a series of components are driven by rotating the knob, so that the limiting block is matched with the fixing strip to fix the rotating rod, the valve ball is prevented from being accidentally opened due to collision when equipment is not used, safety accidents such as fluid leakage are effectively avoided, the safety of personnel and equipment is guaranteed, and potential risks are reduced.

Description

Technical Field

[0001] This utility model relates to the field of gate valve design technology, and in particular to a spherical gate valve for fully mechanized coal mining faces. Background Technology

[0002] In fully mechanized coal mining faces, efficient and safe fluid transport and control are crucial for the smooth operation of coal mining. Spherical gate valves, as key devices for controlling fluid flow in hydraulic systems, are widely used in the hydraulic pipelines of equipment such as coal mining machines, scraper conveyors, and hydraulic supports. Their performance directly affects the normal operation of the equipment, production efficiency, and the safety of underground workers. With the continuous advancement of coal mining technology, higher requirements are placed on the reliability, stability, and ease of operation of spherical gate valves to adapt to the complex and ever-changing underground mining environment.

[0003] Currently, some ball valves used in underground coal mines have numerous problems. In terms of safety, traditional ball valves lack effective anti-accidental opening designs. The underground working environment is complex, and equipment is frequently subjected to external forces such as collisions and vibrations. When not in use, the ball of a traditional valve is prone to opening due to accidental impacts, leading to hydraulic oil leakage. For example, during the frequent movement of a coal mining machine, surrounding equipment may accidentally collide with the ball valve. Due to its simple ball-fixing structure, it is difficult to resist such external impacts. Once the ball opens, it not only wastes hydraulic oil but may also cause equipment failure, and in severe cases, even threaten the lives of underground workers. Regarding flow control, existing ball valves have poor sealing and stability. When it is necessary to adjust the fluid flow rate and keep the ball partially open, the fluid pressure can easily push the ball further open, making it difficult to control the flow rate stably. This is because the internal sealing and limiting structure design of traditional valves is unreasonable, the sealing effect between the ball and the seat is limited, and there are no reliable anti-slip and buffering devices. In actual coal mining operations, this affects the precise control of key parameters such as the lifting speed of hydraulic supports and the traction speed of coal mining machines, reducing the working efficiency and operational stability of the equipment. Therefore, it is urgent to develop a spherical gate valve for fully mechanized coal mining faces with reliable anti-misoperation function and precise flow control capability. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a spherical stop valve for fully mechanized coal mining faces. This valve aims to solve the problems of accidental opening and unstable flow control in existing spherical stop valves for coal mines, thereby ensuring the safe and stable operation of the equipment.

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

[0006] A spherical gate valve for a fully mechanized coal mining face includes an installation block. A valve pipe is installed inside the installation block, and a valve ball is installed inside the valve pipe. A groove is provided inside the installation block, and a through groove is provided on the bottom side of the valve pipe. The through groove is located on the top side of the groove, and an abutment component is provided inside the groove. A connecting block is fixedly connected to the right end of the top side of the installation block. A transmission groove is opened inside the connecting block, and a connecting component is provided inside the transmission groove. A limit groove is opened at the front end of the left side of the connecting block, and the top side of the limit groove is connected to the transmission groove via a sliding groove.

[0007] Furthermore, the connecting assembly includes a connecting rod, a first rotating shaft is fixedly connected to the left side of the connecting rod, a limit block is rotatably connected to the bottom side of the first rotating shaft, a second rotating shaft is fixedly connected to the right side of the connecting rod, and a rotating wheel is rotatably connected to the top side of the second rotating shaft.

[0008] Furthermore, the top side of the rotating wheel extends through the top side of the connecting block and is fixedly connected to a knob.

[0009] Furthermore, the abutment assembly includes a telescopic rod, the bottom side of which is fixedly connected to the bottom side of the groove, and an abutment plate is fixedly connected to the top side of the telescopic rod, with an anti-slip film provided on the top side of the abutment plate.

[0010] Furthermore, a spring is provided inside the groove, with one end of the spring fixedly connected to the bottom side of the abutment plate and the other end fixedly connected to the bottom side of the groove.

[0011] Furthermore, a rotating rod is fixedly connected to the top side of the valve ball, and the top side of the rotating rod penetrates the top side of the outer wall of the valve pipe and the top side of the outer wall of the mounting block.

[0012] Furthermore, a handle is fixedly connected to the left side of the top end of the outer wall of the rotating rod, and a fixing strip is fixedly connected to the front side of the top end of the outer wall of the rotating rod.

[0013] Furthermore, a turntable is fixedly connected to the bottom side of the valve ball, the turntable is located inside the through groove, and the bottom side of the turntable abuts against the top side of the abutment plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by rotating the knob, a series of components are driven to make the limiting block and the fixing strip cooperate to fix the rotating rod, preventing the valve ball from accidentally opening due to collision when the equipment is not in use, effectively avoiding safety accidents such as fluid leakage, ensuring the safety of personnel and equipment, and reducing potential risks.

[0016] 2. In this invention, the spring force ensures a tight fit between the abutment plate and the turntable. Combined with the anti-slip film on the top side of the abutment plate, this double protection effectively prevents the valve ball from being accidentally forced open when not fully open. This design enhances the valve's sealing performance, preventing fluid leakage, while also ensuring the stability of the valve's open state. This reduces safety hazards caused by valve instability, extends the equipment's service life, lowers maintenance costs, and provides strong support for the stable operation of the fluid conveying system. Attached Figure Description

[0017] Figure 1 This is a perspective view of the spherical shut-off valve for a fully mechanized coal mining face proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the spherical stop valve for a fully mechanized coal mining face proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the rotor structure of the spherical stop valve for a fully mechanized coal mining face proposed in this utility model.

[0020] Legend:

[0021] 1. Mounting block; 2. Valve pipe; 3. Connecting block; 4. Knob; 5. Fixing strip; 6. Rotating rod; 7. Handle; 8. Valve ball; 9. Spring; 10. Telescopic rod; 11. Abutment plate; 12. Rotating shaft one; 13. Connecting rod; 14. Rotating wheel; 15. Turntable; 16. Limiting block; 17. Rotating shaft two. 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. 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.

[0023] Reference Figure 1-3An embodiment of this utility model provides a spherical stop valve for a fully mechanized coal mining face, comprising an installation block 1, a valve pipe 2 inside the installation block 1, a valve ball 8 inside the valve pipe 2, a groove inside the installation block 1, a through groove on the bottom side of the valve pipe 2, the through groove being located on the top side of the groove, a telescopic rod 10 inside the groove, a connecting block 3 fixedly connected to the right end of the top side of the installation block 1, a transmission groove inside the connecting block 3, a connecting rod 13 inside the transmission groove, a limit groove at the front end of the left side of the connecting block 3, the top side of the limit groove being connected to the transmission groove via a sliding groove, a rotating shaft 12 fixedly connected to the left side of the connecting rod 13, a limit block 16 rotatably connected to the bottom side of the rotating shaft 12, a rotating shaft 17 fixedly connected to the right side of the connecting rod 13, a rotating wheel 14 rotatably connected to the top side of the rotating shaft 17, the top side of the rotating wheel 14 penetrating the top side of the connecting block 3 and fixedly connected to a knob 4.

[0024] Specifically, the operation procedure for using a ball valve in a fully mechanized coal mining face is rigorous and crucial. First, manually turn knob 4. Turning knob 4 drives the rotating wheel 14 to rotate. As a key component of the transmission, the rotating wheel 14 drives the connected shaft 17 and connecting rod 13 to rotate synchronously. During this process, the rotation of the connecting rod 13 moves the limiting block 16. When the limiting block 16 moves to a certain position, it releases the restriction on the fixing bar 5. This step prepares for subsequent operations. After releasing the restriction, the operator turns handle 7. Turning handle 7 drives the rotating rod 6. Since the rotating rod 6 is tightly connected to the valve ball 8, the valve ball 8 also rotates. After the valve ball 8 rotates, the previously closed internal passage of the valve pipe 2 is opened, allowing fluid to pass smoothly through the valve ball 8, thereby achieving control over the fluid delivery in the hydraulic system of the fully mechanized mining face.

[0025] Reference Figure 1-3 The bottom side of the telescopic rod 10 is fixedly connected to the bottom side of the groove. The top side of the telescopic rod 10 is fixedly connected to the abutment plate 11. The top side of the abutment plate 11 is provided with an anti-slip film. The inside of the groove is provided with a spring 9. One end of the spring 9 is fixedly connected to the bottom side of the abutment plate 11, and the other end is fixedly connected to the bottom side of the groove. The top side of the valve ball 8 is fixedly connected to the rotating rod 6. The top side of the rotating rod 6 passes through the top side of the outer wall of the valve pipe 2 and the top side of the outer wall of the mounting block 1. The left side of the top of the outer wall of the rotating rod 6 is fixedly connected to the handle 7. The front side of the top of the outer wall of the rotating rod 6 is fixedly connected to the fixing strip 5. The bottom side of the valve ball 8 is fixedly connected to the turntable 15. The turntable 15 is located inside the through groove. The bottom side of the turntable 15 abuts against the top side of the abutment plate 11.

[0026] Specifically, in practical work, depending on the different operational requirements of the fully mechanized mining equipment, it is sometimes necessary to precisely control the fluid flow rate, in which case it is not necessary to fully open the valve ball 8. To ensure that the valve ball 8 can be stably kept in a partially open state and to prevent the fluid pressure from completely forcing the valve ball 8 open, the ball stop valve has a unique structural design. When the rotary table 15 is installed, the rotary table 15 pushes the abutment plate 11 downwards, and the abutment plate 11, under pressure, compresses the spring 9 below. The compressed spring 9 generates elastic force, which continuously applies an upward force to the rotary table 15 through the abutment plate 11, making the abutment plate 11 and the rotary table 15 fit tightly together. Moreover, the top side of the abutment plate 11 is provided with an anti-slip membrane, which further increases the friction between it and the rotary table 15. Under this dual action, even if the valve ball 8 is not fully open, it can effectively prevent the fluid from completely forcing the valve ball 8 open, ensuring stable control of the fluid flow rate, meeting the complex working requirements of the fully mechanized mining face in the coal mine, and ensuring the stable operation of the fully mechanized mining equipment.

[0027] Working principle: In use, firstly, turn the knob 4 to drive the rotating wheel 14 to rotate, thereby driving the rotating shaft 17 and the connecting rod 13 to rotate, which in turn drives the connecting rod 13 and the limiting block 16 to move, and releases the limiting block 16 from the fixing strip 5. Then, turn the handle 7 to drive the rotating rod 6 and the valve ball 8 to rotate, so that the fluid inside the valve pipe 2 can pass through the valve ball 8. At the same time, sometimes in order to control the flow rate of the fluid, it is not necessary to fully open the valve ball 8. When installing the turntable 15, the turntable 15 will push the abutment plate 11 to move downward and compress the spring 9. Thus, the spring 9 will continuously exert force on the turntable 15 through the abutment plate 11, thereby making the abutment plate 11 and the turntable 15 fit more tightly. The top side of the abutment plate 11 is provided with an anti-slip film, which increases the friction between the abutment plate 11 and the turntable 15, thereby preventing the fluid from fully opening the valve ball 8 when it is not fully opened.

[0028] 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 spherical stop valve for use in a fully mechanized coal mining face in a coal mine, characterized in that, The utility model provides a valve, including installation piece (1), the inside of installation piece (1) is provided with valve pipe (2), the inside of valve pipe (2) is provided with valve ball (8), the inside of installation piece (1) is provided with recess, the bottom side of valve pipe (2) is provided with through slot, and the through slot is located the top side of recess, the inside of recess is provided with abutment subassembly, the right end of installation piece (1) top side is fixedly connected with connecting piece (3), the inside of connecting piece (3) is provided with transmission groove, and the inside of transmission groove is provided with connecting subassembly, and the front end of connecting piece (3) left side is provided with limiting slot, and the top side of limiting slot is connected with transmission groove through sliding slot.

2. The spherical stop valve of the fully mechanized coal mining face in a coal mine shaft according to claim 1, characterized in that, The connecting subassembly includes a connecting rod (13), the left side of the connecting rod (13) is fixedly connected with a first rotating shaft (12), the bottom side of the first rotating shaft (12) is rotatably connected with a limiting block (16), the right side of the connecting rod (13) is fixedly connected with a second rotating shaft (17), and the top side of the second rotating shaft (17) is rotatably connected with a rotating wheel (14).

3. The spherical stop valve of the fully mechanized coal mining face in a coal mine shaft according to claim 2, characterized in that: The top side of the rotating wheel (14) penetrates the top side of the connecting piece (3) and is fixedly connected with a rotating knob (4).

4. The spherical stop valve of the fully mechanized coal mining face in a coal mine shaft according to claim 1, characterized in that, The abutment subassembly includes a telescopic rod (10), the bottom side of the telescopic rod (10) is fixedly connected with the bottom side of the recess, the top side of the telescopic rod (10) is fixedly connected with an abutment disc (11), and the top side of the abutment disc (11) is provided with an anti-skid film.

5. The spherical stop valve of the fully mechanized coal mining face in a coal mine shaft according to claim 4, characterized in that: The inside of the recess is provided with a spring (9), one end of the spring (9) is fixedly connected with the bottom side of the abutment disc (11), and the other end is fixedly connected with the bottom side of the recess.

6. The spherical stop valve of the fully mechanized coal mining face in a coal mine shaft according to claim 1, characterized in that: The top side of the valve ball (8) is fixedly connected with a rotating rod (6), the top side of the rotating rod (6) penetrates the top side of the outer wall of the valve pipe (2) and the top side of the outer wall of the installation piece (1).

7. The spherical stop valve of the fully mechanized coal mining face in a coal mine shaft according to claim 6, characterized in that: The left side of the top end of the outer wall of the rotating rod (6) is fixedly connected with a handle (7), and the front side of the top end of the outer wall of the rotating rod (6) is fixedly connected with a fixed strip (5).

8. The spherical stop valve of the fully mechanized coal mining face in a coal mine shaft according to claim 4, characterized in that: The bottom side of the valve ball (8) is fixedly connected with a rotating disc (15), the rotating disc (15) is located in the through slot, and the bottom side of the rotating disc (15) abuts against the top side of the abutment disc (11).

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