A safeguard valve

Abstract

The utility model relates to a coal mine filling mining related technical field, concretely relates to a kind of safeguard valve, including valve body, and the opposite side wall of valve body is equipped with feed inlet and discharge outlet, and the end head of valve body is equipped with end cap, and the valve body is equipped with the valve core of the material passing channel being set, and the valve core is set in the valve body between two end caps with sliding structure mode, when material passing channel slides between feed inlet and discharge outlet;Valve core is connected with telescopic link, and telescopic link one end is connected with valve core through an end cap, and the side wall of telescopic link in end cap is equipped with third sealing ring;The valve body in the both sides of valve core is equipped with chamber, and two chambers are respectively enclosed by valve core one end face and valve body, end cap, and the chamber of being set sealing in the both sides of valve core, the movement of drive valve core is realized by the entry of oil, and then the on-off of feed inlet and discharge outlet is realized, and the degree of material passing channel opening and closing, without additionally setting power oil cylinder, reduce the space occupation.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine backfilling mining, specifically to a safety valve. Background Technology

[0002] Our company's Chinese utility model patent application number 202120832043.1—a high-pressure resistant paste filling mining protection valve—includes a cylinder assembly, an inlet, an outlet, a mounting block, and a cylinder bottom. A valve core rod is installed inside the cylinder assembly, and a connecting block is welded to one side of the valve core rod. Movable blocks are welded to both sides of the connecting block, and a movable hook is installed on one side of the movable block. A valve core is installed on one side of the movable hook, and an installation groove is opened on one side of the valve core. Slide rails are installed on both sides of the installation groove, and pulleys are installed inside the slide rails. A guide rod is installed on one side of the pulleys. The inlet is opened on one side of the cylinder assembly, and an inlet pipe is installed on one side of the inlet. A threaded shaft is installed on one side of the inlet pipe, and a clamp is installed on one side of the threaded shaft. The working principle of this patented solution is as follows: opening the valve core rod causes the valve core to move back and forth, thereby adjusting the flow rate.

[0003] The above-mentioned patents require additional tools such as hydraulic cylinders on one side to drive the valve core rod and move the valve core, which occupies a large space; if there is a deviation in the installation position of the adjusting hydraulic cylinder, it is easy to cause eccentric wear when the valve core rod slides with the cylinder assembly, affecting the service life. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a safety valve, and the technical solution adopted is as follows: A safety valve, characterized in that it comprises: The valve body has an inlet and an outlet on two opposite side walls, and end caps are provided at both ends of the valve body. A valve core with a material passage is provided. The valve core is set in the valve body between the two end caps in a sliding structure. When the material passage slides between the inlet and outlet, the valve is guaranteed to open. The valve has two chambers, each of which is enclosed by one end face of the valve core, the valve body, and the end cap. The oil inlet is located on the side wall of the chamber. The telescopic rod has one end that passes through an end cap and is connected to the valve core. A third sealing ring is fitted on the side wall of the telescopic rod inside the end cap. The first sealing ring is fitted onto both ends of the valve core; The second sealing ring is fitted onto the valve core sidewalls on both sides of the material passage. It also features a guide structure to prevent the valve core from rotating axially.

[0005] Furthermore, the two chambers are a left chamber and a right chamber, with the left chamber being formed by the left end face of the valve core, the inner wall of the valve body, and the left end cap. The right chamber is formed by the right end face of the valve core, the inner wall of the valve body, and the right end cap.

[0006] Furthermore, the end cap on the right side is connected to the valve body by threads, while the end cap on the left side is connected to the valve body by a fixed structure.

[0007] Furthermore, the guide structure includes a guide post that is specifically connected to an end cap, and the valve core has a guide groove that is slidably connected to the guide post along the axial direction.

[0008] Furthermore, the two oil ports are connected to hydraulic oil pumps via pipelines.

[0009] Furthermore, a lever-type displacement sensor is fixedly installed on the valve body on one side of the telescopic rod, and a connecting plate is fixedly installed on the output rod of the lever-type displacement sensor, which is connected to the telescopic rod. The lever-type displacement sensor is electrically connected to a PLC.

[0010] The beneficial effects of this utility model are as follows: sealed chambers are set on both sides of the valve core, and the movement of the valve core is driven by the entry of oil, thereby realizing the opening and closing of the feed port and the feed outlet, as well as the degree of opening and closing of the material passage. There is no need to set up a separate power cylinder, which reduces the space occupation.

[0011] The rod-type displacement sensor is connected to the telescopic rod via a connecting plate and is used to detect the opening of the material passage. Combined with a PLC, it improves the intelligence level of the paste filling system. Attached Figure Description

[0012] Figure 1 This is a partial cross-sectional view of the main structure of this utility model; Figure 2 This is a schematic diagram of the right-side structure of this utility model; In the picture: 1. Valve body, 2. End cap, 3. Material passage, 4. Valve core, 5. Chamber, 6. Oil port, 7. Telescopic rod, 8. Third sealing ring, 9. First sealing ring, 10. Second sealing ring, 11. Guide post, 12. Guide groove, 13. Connecting plate, 14. Pull rod type displacement sensor. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows: Example 1: A safety valve, characterized in that it includes a valve body 1, with an inlet and an outlet on two opposite side walls, and end caps 2 at both ends of the valve body 1. A valve core 4 with a material passage 3 is disposed inside the valve body 1, and the valve core 4 is slidably disposed within the valve body 1 between the end caps 2. When the material passage 3 slides between the inlet and outlet, the safety valve opens, forming a passage to ensure the paste can pass through. A telescopic rod 7 is connected to the valve core 4, with one end of the telescopic rod 7 passing through an end cap 2 and connected to the valve core 4. A third sealing ring 8 is fitted on the side wall of the telescopic rod 7 inside the end cap 2. The valve core 4 has two... Each valve body 1 has a chamber 5. The two chambers 5 are formed by one end face of the valve core 4, the valve body 1, and the end cap 2. The side walls of the two chambers 5 are provided with oil ports 6. To ensure the sealing of the chambers 5, the valve core 4 is fitted with a first sealing ring 9 at both ends, and a second sealing ring 10 is provided on the side walls of the valve core 4 on both sides of the material passage 3 to prevent the paste from entering the gap between the valve core 4 and the valve body 1. The valve core 4 is moved by the entry of oil, thereby realizing the opening and closing of the inlet and outlet and the degree of opening and closing of the material passage. There is no need to set up a separate power cylinder, which reduces the space occupation.

[0014] Specifically, the two chambers 5 are the left chamber and the right chamber. The left chamber is formed by the left end face of the valve core 4, the inner wall of the valve body 1, and the left end cap 2. The right chamber is formed by the right end face of the valve core 4, the inner wall of the valve body 1, and the right end cap 2. The chambers 5 can be filled with oil. The two oil ports 6 are connected to a hydraulic oil pump through pipelines. The hydraulic oil pump is connected to the oil ports 6 through pipelines, so that the valve forms a telescopic structure with the same principle as the oil cylinder. For example, oil enters the left chamber and oil exits the right chamber, and the oil pushes the valve core 4 to move in the valve body.

[0015] It should be noted that the first sealing ring 9 is located on both sides of the inlet and outlet, preventing oil from entering the inlet and outlet and ensuring a tight seal.

[0016] The end cap 2 on the right side is connected to the valve body 1 by threads, which facilitates the installation of the valve core 4. A sealing ring or sealing gasket can also be placed here. The end cap 2 on the left side is connected to the valve body 1 by a fixed structure.

[0017] It is also provided with a guide structure to prevent the valve core 4 from rotating around the axial direction. The guide structure includes a guide post 11 fixedly connected to an end cap 2, and the valve core 4 is provided with a guide groove 12 slidably connected to the guide post 11 along the axial direction.

[0018] Example 2: Traditional coal mine paste filling pipeline technology involves laying pipelines from the filling station to the filling face. The filling pipeline is equipped with safety valves, which are manually operated to transport the slurry. Personnel are on-site to supervise the process. Traditional coal mine paste filling automation technology does not meet the current production needs.

[0019] The existing technology has the following problems: 1. Currently, the valve opening of the safety valve cannot be monitored in the central control room, and there are blind spots for the central control operator when operating the valve.

[0020] 2. On-site operation by personnel results in insufficient pipeline safety, while centralized control operation imposes significant production limitations. On-site monitoring and timely feedback to the central control center are required, leading to substantial personnel waste.

[0021] To solve the above problems, based on Embodiment 1, this embodiment has a rod-type displacement sensor 14 fixedly installed on the valve body 1 on one side of the telescopic rod 7. The output rod of the rod-type displacement sensor 14 is fixedly installed with a connecting plate 13, which is connected to the telescopic rod 7. The rod-type displacement sensor 14 is electrically connected to a PLC.

[0022] The beneficial effects of this embodiment are: 1. Further reduction of personnel at the underground site: reduce the number of on-site personnel to approximately two manpower.

[0023] 2. Equipment control has been further improved, information can be uploaded to the information center, information monitoring is more comprehensive, operation by centralized control personnel is more convenient, and the centralized control system has been further optimized: 3. Information monitoring is more comprehensive, which helps control personnel analyze the dynamics of downhole equipment and makes emergency response faster. The working principle and process of this utility model are as follows: In use, the inlet and outlet are connected to the filling pipeline on both sides. The hydraulic oil pump is connected to oil port 6 through the pipeline. When it is necessary to adjust the opening of the safety valve, the hydraulic oil pump is started to inject oil into the right chamber, and the oil flows out of the left chamber, thereby pushing the valve core 4 to... Figure 1 The telescopic rod 7 moves to the left, which in turn pulls the output axis of the lever-type displacement sensor to the left via the connecting plate 13. The lever-type displacement sensor then uploads the signal to the downhole PLC to achieve real-time detection of the valve opening.

[0024] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A safety valve, characterized in that, include: The valve body (1) has an inlet and an outlet on its two opposite side walls, and end caps (2) are provided at both ends of the valve body (1). A valve core (4) with a material passage (3) is provided. The valve core (4) is installed in the valve body (1) between the two end caps (2) in a sliding structure. When the material passage (3) slides between the inlet and outlet, the valve is guaranteed to open. Two chambers (5), each chamber (5) is formed by one end face of the valve core (4), the valve body (1), and the end cap (2); Oil port (6) is located on the side wall of chamber (5); Telescopic rod (7), one end of telescopic rod (7) passes through an end cap (2) and is connected to valve core (4). The side wall of telescopic rod (7) inside end cap (2) is fitted with a third sealing ring (8). The first sealing ring (9) is sleeved on both ends of the valve core (4); The second sealing ring (10) is fitted on the side wall of the valve core (4) on both sides of the material passage (3); It is also equipped with a guide structure to prevent the valve core (4) from rotating around the axial direction.

2. A safety valve according to claim 1, characterized in that: The two chambers (5) are the left chamber and the right chamber, respectively. The left chamber is formed by the left end face of the valve core (4), the inner wall of the valve body (1), and the left end cap (2). The right chamber is formed by the right end face of the valve core (4), the inner wall of the valve body (1), and the right end cap (2).

3. A safety valve according to claim 1 or 2, characterized in that: The end cap (2) on the right side is connected to the valve body (1) by threads, and the end cap (2) on the left side is connected to the valve body (1) by a fixed structure.

4. A safety valve according to claim 1, characterized in that: The guide structure includes a guide post (11) fixedly connected to an end cap (2), and a guide groove (12) slidably connected to the guide post (11) is provided on the valve core (4) along the axial direction.

5. A safety valve according to claim 1, characterized in that: Two oil ports (6) are connected to a hydraulic oil pump via pipelines.

6. A safety valve according to claim 1, characterized in that: A lever-type displacement sensor (12) is fixedly installed on the valve body (1) on one side of the telescopic rod (7). A connecting plate (13) is fixedly installed on the output rod of the lever-type displacement sensor (12). The connecting plate (13) is connected to the telescopic rod (7). The rod-type displacement sensor (12) is electrically connected to a PLC.

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