Valve core sealing element with rubber sealing element

Abstract

The utility model discloses a valve core sealing element with a rubber sealing element, which comprises a valve body and a base arranged in the valve body, a double-layer corrugated pipe is welded on one side of the base, a valve core is welded on one side, far away from the base, of the double-layer corrugated pipe, a second spring is arranged in the double-layer corrugated pipe, and the rubber sealing element is arranged in the valve core. And a dismounting structure is arranged on one side of the base. The double-layer corrugated pipe is arranged, the double-layer corrugated pipe is made of an integrated stainless steel material, a medium in a wall is thoroughly separated from the second spring, and the medium and the second spring are isolated from fluid under different states that the valve core is opened or closed, so that the second spring is prevented from being in contact with impurities in the fluid, the second spring is prevented from being corroded and aged, and the service life is prolonged; chemical reaction is avoided, the fatigue strength of the second spring is kept, long-term reliable closing of the valve is guaranteed, the valve element is fast to install through the clamping block and the sliding groove, meanwhile, the limiting shaft and the limiting groove achieve the limiting effect, and connection firmness is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, and in particular to a valve core seal with a rubber seal. Background Technology

[0002] Valve core seals are key components in fluid control equipment, such as check valves and directional valves. Their function is to ensure a good seal when the valve is closed to prevent fluid leakage. Check valves achieve unidirectional flow through the seal between the valve core and the valve seat. When the fluid flows in the forward direction, the pressure pushes the valve core to open; when it flows in the reverse direction, the valve core presses the seal under the action of spring force or pressure difference to block the fluid.

[0003] The existing technical solutions mentioned above have the following drawbacks: During the use of the one-way valve, the spring assembly inside the valve core is usually in direct contact with the fluid, and the fluid may contain particulate matter and corrosive chemicals. These substances will adhere to the surface of the spring, causing electrochemical corrosion or chemical erosion, which will cause the spring to gradually lose its elasticity or even break, resulting in a short service life. In addition, the coil and surface will form local resistance, increasing the flow pressure loss. Utility Model Content

[0004] The purpose of this invention is to provide a valve core seal with a rubber seal to solve the problem of short service life of existing valve core seals with rubber seals.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a valve core seal with a rubber seal, comprising a valve body and a base installed inside it, wherein a double-layer bellows is welded to one side of the base, and a valve core is welded to the side of the double-layer bellows away from the base, a second spring is provided inside the double-layer bellows, and a disassembly structure is provided on one side of the base; the disassembly structure includes connecting plates provided at the top and bottom of the base, and a limit shaft is installed at the opposite end of each connecting plate, a stop block is installed at the opposite end of each connecting plate, and a locking block is provided at both ends of the base.

[0006] Preferably, a sealing port is provided on one side of the valve body, and the sealing port is conical in shape. A connection port is provided on the other side of the valve body, and a sealing ring is installed on the side wall of the connection port. The sealing ring is "O" shaped.

[0007] Preferably, a rubber pad is provided on one side of the valve core, and the rubber pad is conical in shape. The shape of the rubber pad matches the shape of the sealing port, and a through hole is provided on one side of the valve core.

[0008] Preferably, the valve body inner walls at both ends of the card block are provided with card grooves, and one end of each card groove is provided with a sliding groove. The card block and the sliding groove and the card groove form a sliding structure, and the card block and the card groove form an engaging structure.

[0009] Preferably, the connecting port sidewall on one side of the limiting shaft is provided with a limiting groove, and the limiting groove and the limiting shaft form a locking structure. The limiting shaft is provided with a baffle on the outside, and a first spring is sleeved on one side of the baffle.

[0010] Preferably, a connecting shaft is installed at the center of each connecting plate, and the connecting shaft and the connecting plate are rotatably connected. Movable grooves are provided at the top and bottom of each connecting plate.

[0011] Preferably, a connecting block is provided on both the limiting shaft and the abutment side inside the movable groove, and the maximum outer diameter of the connecting block is greater than the inner diameter of the movable groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the valve core seal with rubber seal protects the second spring through double-layer bellows, thereby avoiding chemical reaction or corrosion between it and the fluid, ensuring the stable performance of the second spring, and the valve core can be installed quickly through the locking block and sliding groove. At the same time, the limiting shaft and the limiting groove have a limiting effect, ensuring the firmness of the connection.

[0013] 1. By setting up a double-layer bellows, which is made of integrated stainless steel, the medium inside the wall is completely separated from the second spring. In different states of valve core opening or closing, it is isolated from the fluid, thereby avoiding contact between the second spring and impurities in the fluid, preventing it from being corroded and aged, extending its service life, and avoiding chemical reactions. The elastic modulus and fatigue strength of the second spring are maintained, ensuring that the valve can be reliably closed for a long time.

[0014] 2. With a disassembly and assembly structure, the base has locking blocks at both ends. The valve core can be fixed by pushing it in and rotating it 90°. Compared with the cumbersome threaded connection, it is quicker to install. At the same time, the positioning of the limiting shaft and the limiting groove during rotation fixation has a limiting effect on the base, preventing it from turning back and loosening. This allows for quick installation of the valve core seal and ensures the stability of the connection, preventing leakage. Attached Figure Description

[0015] Figure 1 This is a top-view three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below;

[0017] Figure 3 This is a three-dimensional structural diagram of the valve core in the disassembled state of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the double-layer corrugated pipe in a semi-sectional state according to the present invention.

[0019] Figure 5 For the present utility model Figure 3 A magnified three-dimensional structural diagram of a portion of point A in the middle;

[0020] Figure 6 For the present utility model Figure 4 A magnified three-dimensional structural diagram of a portion of point B in the middle.

[0021] In the diagram: 1. Valve body; 11. Sealing port; 12. Sealing ring; 13. Connection port; 2. Valve core; 21. Rubber gasket; 22. Through hole; 3. Double-layer bellows; 4. Disassembly and assembly structure; 41. Locking block; 42. Slide groove; 43. Limiting shaft; 431. Limiting groove; 432. Baffle; 433. First spring; 44. Locking groove; 45. Connecting plate; 451. Connecting block; 452. Connecting shaft; 453. Movable groove; 46. Abutment block; 5. Base; 6. Second spring. 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] Please see Figures 1-6 This utility model provides a valve core seal with a rubber seal, including a valve body 1 and a base 5 installed inside it. A valve core 2 is welded to the side of the double-layer bellows 3 away from the base 5. A disassembly structure 4 is provided on one side of the base 5. The disassembly structure 4 includes connecting plates 45 at the top and bottom of the base 5, with limit shafts 43 installed at opposite ends of the connecting plates 45 and abutments 46 installed at opposite ends of the connecting plates 45. Locking blocks 41 are provided at both ends of the base 5. The inner wall of the valve body 1 at each end is provided with a slot 44, and one end of each slot 44 is provided with a sliding groove 42. The locking block 41 forms a sliding structure with the sliding groove 42 and the slot 44, and the locking block 41 and the slot 44 form an engaging structure. The side wall of the connection port 13 on one side of the limiting shaft 43 is provided with a limiting groove 431, and the limiting groove 431 and the limiting shaft 43 form an engaging structure. The outside of the limiting shaft 43 is provided with a baffle 432, and one side of the baffle 432 is fitted with a first spring 433.

[0024] See attached document Figure 2 , Figure 4 and Figure 5When the device is in use, the base 5 has a hexagonal pattern on one side. First, the locking block 41 is aligned with the slide groove 42 and pushed into the innermost end. Using the corresponding thread cutter, the base 5 is rotated to drive the locking block 41 to slide into the slot 44. Rotate 90° to a position away from the slide groove 42 to achieve locking and fixation. At the same time, the limiting shaft 43 rotates to the position of the limiting groove 431. When the thread cutter is removed, the elastic force of the first spring 433 drives the limiting shaft 43 to push outward through the baffle 432, pushing it into the interior of the limiting groove 431 to achieve positioning. This can prevent the base 5 from reversing and achieve the stability of the connection between the locking block 41 and the slot 44.

[0025] A connecting shaft 452 is installed at the center of each connecting plate 45, and the connecting shaft 452 and the connecting plate 45 are rotatably connected. The top and bottom of the connecting plate 45 are provided with movable grooves 453. A connecting block 451 is provided on one side of the limiting shaft 43 and the abutment block 46 inside the movable groove 453, and the maximum outer diameter of the connecting block 451 is greater than the inner diameter of the movable groove 453.

[0026] See attached document Figure 4 and Figure 5 When valve core 2 needs to be disassembled for maintenance, simply insert a threading tool to press the abutment 46 in the hexagonal groove into the interior of the base 5, causing the connecting plate 45 to rotate around the connecting shaft 452, and pulling the limiting shaft 43 connected to it (see diagram, limiting groove 431) into the interior of the base 5. Then, rotate the base 5 in the opposite direction by 90°, so that the locking block 41 slides from the locking groove 44 to the sliding groove 42, and can be directly pulled out, simplifying the operation.

[0027] A double-layer bellows 3 is welded to one side of the base 5. A second spring 6 is installed inside the double-layer bellows 3. A sealing port 11 is provided on one side of the valve body 1. The sealing port 11 is conical in shape. A connection port 13 is provided on the other side of the valve body 1. A sealing ring 12 is installed on the side wall of the connection port 13. The sealing ring 12 is "O" shaped. A rubber pad 21 is provided on one side of the valve core 2. The rubber pad 21 is conical in shape and matches the shape of the sealing port 11. A through hole 22 is provided on one side of the valve core 2.

[0028] See attached document Figure 1 , Figure 3 and Figure 4When the device is in use, during installation, one side of the base 5 is conical. As it is continuously inserted, it compresses the sealing ring 12 inside the connection port 13. Because the sealing ring 12 is "O" shaped, it deforms during the compression process, fully filling the gap between the base 5 and the connection port 13, thus enhancing the sealing effect. When the fluid flows in the forward direction, the pressure pushes the valve core 2 to open, and the fluid flows through the through hole 22 and the inside of the double-layer bellows 3. When the fluid flows in the reverse direction, under the action of the spring force and pressure difference of the second spring 6, the valve core 2 moves towards the sealing port 11. The rubber pad 21 on one side of the valve core 2 fully compresses the conical surface of the sealing port 11, resulting in a good sealing effect and preventing fluid leakage. The second spring 6 is located inside the double-layer bellows 3, which is made of stainless steel, completely separating the fluid from the second spring 6 and protecting it, thus maintaining the stable performance of the second spring 6.

[0029] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A valve core seal with a rubber seal, comprising a valve body (1) and a base (5) installed therein; Its features are: A double-layer corrugated pipe (3) is welded to one side of the base (5), and a valve core (2) is welded to the side of the double-layer corrugated pipe (3) away from the base (5). A second spring (6) is provided inside the double-layer corrugated pipe (3), and a disassembly structure (4) is provided on one side of the base (5). The disassembly and assembly structure (4) includes connecting plates (45) set at the top and bottom of the base (5), and a limit shaft (43) is installed at the opposite end of the connecting plates (45), and a stop block (46) is installed at the opposite end of the connecting plates (45), and a locking block (41) is set at both ends of the base (5).

2. A valve core seal with a rubber seal according to claim 1, characterized in that: A sealing port (11) is provided on one side of the valve body (1), and the sealing port (11) is conical in shape. A connection port (13) is provided on the other side of the valve body (1), and a sealing ring (12) is installed on the side wall of the connection port (13). The sealing ring (12) is "O" shaped.

3. A valve core seal with a rubber seal according to claim 2, characterized in that: A rubber pad (21) is provided on one side of the valve core (2), and the rubber pad (21) is conical in shape. The shape of the rubber pad (21) matches that of the sealing port (11). A through hole (22) is provided on one side of the valve core (2).

4. A valve core seal with a rubber seal according to claim 1, characterized in that: The valve body (1) at both ends of the card block (41) is provided with a card groove (44), and a sliding groove (42) is provided at one end of the card groove (44). The card block (41) forms a sliding structure with the sliding groove (42) and the card groove (44), and the card block (41) and the card groove (44) form an engaging structure.

5. A valve core seal with a rubber seal according to claim 2, characterized in that: The sidewall of the connection port (13) on one side of the limiting shaft (43) is provided with a limiting groove (431), and the limiting groove (431) and the limiting shaft (43) form a locking structure. The outside of the limiting shaft (43) is provided with a baffle (432), and a first spring (433) is sleeved on one side of the baffle (432).

6. A valve core seal with a rubber seal according to claim 1, characterized in that: Each of the connecting plates (45) has a connecting shaft (452) installed at its center, and the connecting shaft (452) and the connecting plate (45) are rotatably connected. The top and bottom of the connecting plate (45) are provided with movable grooves (453).

7. A valve core seal with a rubber seal according to claim 6, characterized in that: The limiting shaft (43) and the abutment block (46) inside the movable groove (453) are both provided with a connecting block (451), and the maximum outer diameter of the connecting block (451) is greater than the inner diameter of the movable groove (453).

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