A valve seat usable on both sides

Abstract

The utility model discloses a valve seat can two -sided use, including valve body, the outer wall upside thread connection of valve body prevents false touch subassembly, and the inner wall of valve body is provided with rotation positioning subassembly, rotation positioning subassembly includes rotary lever, and the outer wall of rotary lever is through and is connected in the inner wall of valve body, and the lower surface fixed connection of rotary lever has connecting sleeve, and the left surface fixed connection of connecting sleeve has first sealing face, and the right surface fixed connection of connecting sleeve has second sealing face, and the outer wall downside of connecting sleeve is connected in the inner wall of valve body, and the outer wall upside fixed connection of valve body has support station, the utility model discloses through rotation positioning subassembly, makes the device when using, can press the pressing plate, and then through the rotation knob to make first and second sealing face exchange position, and when the rotation starts loose pressing plate, makes the device in the swing of swing plate and rotary lever mutually in the rotation, when rotating to predetermined position, swing plate inserts into the inner wall of rotary lever, thereby realizes accurate positioning rotation position, prevents the situation of side leakage from happening.

Description

Technical Field

[0001] This utility model relates to the field of valve seat technology, specifically a valve seat that can be used on both sides. Background Technology

[0002] As a key sealing component of valves, valve seats are widely used in many fields such as petroleum, chemical, water conservancy, and municipal engineering. Their sealing performance and service life directly affect the stability and economy of the entire fluid transportation system.

[0003] However, in actual use, most of the valve seats in the above-mentioned equipment adopt an integrated design of the sealing surface and the valve body. When the sealing surface of the valve seat is worn due to fluid erosion or other reasons, it can only be discarded and replaced, resulting in material waste. A small number of valve seats that can be used on both sides lack a stable and effective positioning and fixing structure, which can easily lead to improper installation of the sealing ring after rotation and side replacement, causing side leakage. In view of this, we propose a valve seat that can be used on both sides. Summary of the Invention

[0004] The purpose of this invention is to provide a valve seat that can be used on both sides, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a valve seat that can be used on both sides, including a valve body, wherein an anti-accidental contact component is threadedly connected to the upper side of the outer wall of the valve body, and a rotation positioning component is provided on the inner wall of the valve body; The rotation positioning assembly includes a rotating rod, the outer wall of which penetrates and is rotatably connected to the inner wall of the valve body. A connecting sleeve is fixedly connected to the lower surface of the rotating rod. A first sealing surface is fixedly connected to the left surface of the connecting sleeve, and a second sealing surface is fixedly connected to the right surface of the connecting sleeve. The lower side of the outer wall of the connecting sleeve is rotatably connected to the inner wall of the valve body. A sealing ring is fixedly connected to the side of the outer walls of the first and second sealing surfaces that are away from each other. A support platform is fixedly connected to the upper side of the outer wall of the valve body. The outer wall of the rotating rod is rotatably connected to the inner wall of the support platform. Rotating shafts are rotatably connected to both sides of the support platform. A swing plate is fixedly connected to the outer wall of the rotating shaft. The swing plate is elastically connected to the support platform by a torsion spring. A pressure plate is fixedly connected to the side of the swing plate away from the rotating rod. The outer wall of the swing plate is inserted into the inner wall of the rotating rod.

[0006] Preferably, the swing plate is L-shaped, the lower part of the pressure plate near the rotating rod is set as an arc surface, and the outer wall of the rotating rod is provided with two symmetrical positioning grooves along the circumferential direction.

[0007] Preferably, a knob is fixedly connected to the upper surface of the rotating rod.

[0008] Preferably, the anti-accidental contact component includes a protective sleeve, the lower surface of which is threaded to the upper side of the outer wall of the valve body via a threaded ring.

[0009] Preferably, the inner wall of the protective sleeve is hollow, and the outer wall of the knob is inserted into the inner wall of the protective sleeve.

[0010] Preferably, a sliding frame is slidably connected to the upper inner wall of the protective sleeve, a stop block is fixedly connected to the side of the sliding frame away from the rotating rod, and the lower inner surface of the sliding frame is in contact with the outer wall of the swing plate.

[0011] Preferably, the sliding frame and the knob are elastically connected by a pull spring, the upper end of the pull spring is rotatably connected to the inner surface of the sliding frame, and the pull spring is detachably connected to the upper surface of the knob.

[0012] Compared with the prior art, this utility model provides a valve seat that can be used on both sides, which has the following advantages: 1. This reversible valve seat allows the device to press the pressure plate during use by rotating the positioning component. Then, the first sealing surface and the second sealing surface can be swapped by rotating the knob. Once rotation begins, the pressure plate can be released, allowing the swing plate and the rotating rod to fit together during rotation. When the device reaches the predetermined position, the swing plate is inserted into the inner wall of the rotating rod under the action of the torsion spring, thereby achieving precise positioning of the rotation position and preventing side leakage.

[0013] 2. This reversible valve seat, through the anti-accidental contact component, allows the protective sleeve to be connected to the valve body via a threaded ring during use. This prevents the operator from accidentally pressing the pressure plate, causing the rotating plate to rotate. Then, the sliding frame is continuously pulled by the pull spring, and the lower surface of the sliding frame presses against the outer wall of the swing plate, further reducing the swaying of the swing plate and enhancing the stability of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rotation positioning component of this utility model; Figure 3 This is a cross-sectional schematic diagram of the rotary positioning component of this utility model; Figure 4 This is a schematic diagram of the structure of the swing plate of this utility model.

[0015] In the diagram: 1. Valve body; 2. Rotary positioning assembly; 3. Anti-accidental contact assembly; 21. Rotating rod; 22. Connecting sleeve; 23. First sealing surface; 24. Second sealing surface; 25. Sealing ring; 26. Rotating shaft; 27. Torsion spring; 28. Swing plate; 29. ​​Pressure plate; 210. Support platform; 211. Knob; 31. Protective sleeve; 32. Threaded ring; 33. Sliding frame; 34. Pull spring; 35. Stop block. Detailed Implementation

[0016] like Figures 1-4 As shown, this utility model provides a technical solution: a valve seat that can be used on both sides, including a valve body 1 for supporting the overall device, an anti-accidental contact component 3 for preventing the operator from accidentally pressing the pressure plate 29 on the upper side of the outer wall of the valve body 1, and a rotation positioning component 2 for accurately aligning the sealing surface with the water flow when the first sealing surface 23 and the second sealing surface 24 are replaced. The rotation positioning assembly 2 includes a rotating rod 21 for driving the connecting sleeve 22 to rotate. The outer wall of the rotating rod 21 passes through and is rotatably connected to the inner wall of the valve body 1. The lower surface of the rotating rod 21 is fixedly connected to the connecting sleeve 22 for connecting the first sealing surface 23 and the second sealing surface 24 together, and simultaneously drives both to rotate together. The left surface of the connecting sleeve 22 is fixedly connected to the first sealing surface 23 for sealing the fluid passage and preventing medium leakage. The right surface of the connecting sleeve 22 is fixedly connected to the second sealing surface 24 for serving as a backup sealing surface to extend the overall service life of the valve seat. The lower side of the outer wall of the connecting sleeve 22 is rotatably connected to the inner wall of the valve body 1. The side of the outer walls of the first sealing surface 23 and the second sealing surface 24 that are far apart from each other is fixedly connected to a device for sealing the valve body 1 between the first sealing surface 23 or the second sealing surface 24 and the valve body 1. A sealing ring 25 is used to seal the gap. A support platform 210 is fixedly connected to the upper side of the outer wall of the valve body 1 to support the rotation of the rotating shaft 26. The outer wall of the rotating rod 21 is rotatably connected to the inner wall of the support platform 210. The left and right sides of the support platform 210 are rotatably connected to the rotating shaft 26 to support the rotation of the swing plate 28. The outer wall of the rotating shaft 26 is fixedly connected to the swing plate 28, which is inserted into the inner wall of the left and right sides of the rotating rod 21 to fix the rotation of the rotating rod 21. The swing plate 28 and the support platform 210 are elastically connected by a torsion spring 27 to continuously give the swing plate 28 a force to swing in the direction of the rotating rod 21. The side of the swing plate 28 away from the rotating rod 21 is fixedly connected to a pressure plate 29 to facilitate the operator to move the swing plate 28. The outer wall of the swing plate 28 is inserted into the inner wall of the rotating rod 21.

[0017] In one embodiment of this utility model, the swing plate 28 is L-shaped, so that the protrusion of the swing plate 28 can be stably inserted into the inner wall of the rotating rod 21 to fix the rotating rod 21. The lower part of the side of the pressure plate 29 near the rotating rod 21 is set as an arc surface, so that when the swing plate 28 comes into contact with the surface of the rotating rod 21, the surface of the rotating rod 21 will not be scratched by the edge of the swing plate 28, so that the rotating rod 21 can continue to contact the arc surface of the swing plate 28. So that after the rotation is completed, the swing plate 28 can be automatically inserted into the positioning groove of the rotating rod 21. Two symmetrical positioning grooves are opened on the outer wall of the rotating rod 21 along the circumferential direction. The upper surface of the rotating rod 21 is fixedly connected to a knob 211 for the operator to rotate the rotating rod 21. The anti-accidental contact component 3 includes a protective sleeve 31 for blocking the pressure plate 29 to prevent accidental operation. The lower surface of the protective sleeve 31 is threaded to the upper side of the outer wall of the valve body 1 through a threaded ring 32, so that the protective sleeve 31 can be stably fixed to the upper side of the outer wall of the valve body 1 through the threaded connection.

[0018] In this embodiment of the present invention, the inner wall of the protective sleeve 31 is hollow, so that the protective sleeve 31 can accommodate and protect the internal structure. The outer wall of the knob 211 is inserted into the inner wall of the protective sleeve 31. The upper inner wall of the protective sleeve 31 is slidably connected to a sliding frame 33 for pressing the surface of the swing plate 28 to prevent the swing plate 28 from deflecting. The side of the sliding frame 33 away from the rotating rod 21 is fixedly connected to a stop block 35 for preventing the sliding frame 33 from completely separating from the protective sleeve 31. The lower inner surface of the sliding frame 33 is in contact with the outer wall of the swing plate 28. The sliding frame 33 and the knob 211 are elastically connected by a pull spring 34, so that the pull spring 34 continuously pulls the sliding frame 33, thereby allowing the sliding frame 33 to have sufficient force to continuously press the swing plate 28. The upper end of the pull spring 34 is rotatably connected to the inner surface of the sliding frame 33. The pull spring 34 is detachably connected to the upper surface of the knob 211.

[0019] In this invention, during use, when the first sealing surface 23 is worn due to prolonged water flow, the outer wall of the protective sleeve 31 is grasped and rotated counterclockwise. Through the threaded engagement of the threaded ring 32 with the outer wall of the valve body 1, the protective sleeve 31 gradually detaches from the valve body 1. Simultaneously, the pull spring 34 is removed from the upper surface of the knob 211. The protective sleeve 31 is then placed aside, and the pressure plate 29 is pressed down. The movement of the pressure plate 29 causes the swing plate 28 to rotate, thereby causing the rotating shaft 26 to rotate synchronously. At this time, the torsion spring 27 undergoes elastic deformation due to the relative movement between the knob 211 and the swing plate 28. Then, the knob 211 is grasped and rotated. The rotation of the knob 211 causes the rotating rod 21 to rotate, thereby causing the connecting sleeve 22 to rotate. When the pressure plate 29 is released, the pressure plate 29 presses against the outer wall of the rotating rod 21 under the action of the torsion spring 27. Since the contact surface between the swing plate 28 and the rotating rod 21 is an arc surface, when the rotating rod 21 drives the first sealing surface 23 and the second sealing surface 24 to perform the face-changing operation, when the first sealing surface 23 and the second sealing surface 24 rotate 180° to reach the expected position, the swing plate 28 will directly insert into the positioning groove of the rotating rod 21, thereby fixing the device directly. Then, the threaded ring 32 on the lower side of the protective sleeve 31 is screwed into the inner wall of the valve body 1, and the pull spring 34 and the knob 211 are re-fixed. At this time, the pull spring 34 will pull the sliding frame 33 to make the sliding frame 33 tightly adhere to the outer wall of the swing plate 28, thereby achieving that the swing plate 28 has both outer protection and upper anti-loosening.

[0020] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A valve seat that can be used on both sides, comprising a valve body (1), characterized in that: The upper side of the outer wall of the valve body (1) is threaded with an anti-accidental contact component (3), and the inner wall of the valve body (1) is provided with a rotation positioning component (2). The rotating positioning assembly (2) includes a rotating rod (21), the outer wall of which penetrates and is rotatably connected to the inner wall of the valve body (1). A connecting sleeve (22) is fixedly connected to the lower surface of the rotating rod (21). A first sealing surface (23) is fixedly connected to the left surface of the connecting sleeve (22), and a second sealing surface (24) is fixedly connected to the right surface of the connecting sleeve (22). The lower side of the outer wall of the connecting sleeve (22) is rotatably connected to the inner wall of the valve body (1). A sealing ring is fixedly connected to the side of the outer walls of the first sealing surface (23) and the second sealing surface (24) that are far apart from each other. 25), a support platform (210) is fixedly connected to the upper side of the outer wall of the valve body (1), the outer wall of the rotating rod (21) is rotatably connected to the inner wall of the support platform (210), and a rotating shaft (26) is rotatably connected to both the left and right sides of the support platform (210). A swing plate (28) is fixedly connected to the outer wall of the rotating shaft (26), and the swing plate (28) is elastically connected to the support platform (210) through a torsion spring (27). A pressure plate (29) is fixedly connected to the side of the swing plate (28) away from the rotating rod (21), and the outer wall of the swing plate (28) is inserted into the inner wall of the rotating rod (21).

2. A valve seat usable on both sides according to claim 1, characterized in that: The swing plate (28) is L-shaped, and the lower part of the side of the pressure plate (29) near the rotating rod (21) is set as an arc surface. The outer wall of the rotating rod (21) has two symmetrical positioning grooves along the circumferential direction.

3. A valve seat usable on both sides according to claim 1, characterized in that: A knob (211) is fixedly connected to the upper surface of the rotating rod (21).

4. A valve seat usable on both sides according to claim 3, characterized in that: The anti-accidental touch component (3) includes a protective sleeve (31), the lower surface of which is threaded to the upper side of the outer wall of the valve body (1) via a threaded ring (32).

5. A valve seat usable on both sides according to claim 4, characterized in that: The inner wall of the protective sleeve (31) is hollow, and the outer wall of the knob (211) is inserted into the inner wall of the protective sleeve (31).

6. A valve seat usable on both sides according to claim 5, characterized in that: The upper inner wall of the protective sleeve (31) is slidably connected to a sliding frame (33), and a stop block (35) is fixedly connected to the side of the sliding frame (33) away from the rotating rod (21). The lower inner surface of the sliding frame (33) is in contact with the outer wall of the swing plate (28).

7. A valve seat usable on both sides according to claim 6, characterized in that: The sliding frame (33) and the knob (211) are elastically connected by a pull spring (34). The upper end of the pull spring (34) is rotatably connected to the inner surface of the sliding frame (33), and the pull spring (34) is detachably connected to the upper surface of the knob (211).

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