A slide-type relief valve disc

Abstract

The utility model discloses a slide way formula relief valve valve clack, including valve clack body, the valve clack body outer wall is equipped with the sealing groove, the sealing groove inside slide installation has the sealing ring, two mobile grooves are equipped with in the valve clack body upper end surface, two mobile grooves all fixedly installed have slide rod inside, two slide rod outer walls all through the slide of limit mechanism installation has the slide sleeve, two slide rod outer walls all are installed extrusion spring, and two extrusion springs both ends are respectively with the movable groove inner wall of same side and slide sleeve outer wall elasticity and are connected, the utility model discloses a slide sleeve, extrusion spring and bolt etc. component are set, when sealing ring installation in place, extrusion spring is through slide sleeve and connecting plate and is forced to bolt, makes it and sealing ring insertion hole close cooperation, and this structure simplifies installation process, and can be quickly replaced without tools, still can compensate sealing ring wear deformation, stable sealing performance, can prevent sealing ring displacement under high pressure working condition, reduces the risk of leakage, prolongs maintenance period.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a slide-type relief valve disc. Background Technology

[0002] A relief valve is an automatic pressure relief device driven by the static pressure of the medium upstream of the valve. Its opening action is proportional to the increase of pressure exceeding the opening force. Relief valves are mainly used in liquid systems, especially in low displacement and thermal expansion applications, and are also suitable for pumping systems, such as pressure relief equipment.

[0003] In industrial production processes, relief valves are crucial devices for ensuring the safe operation of systems. When the pressure within the system exceeds a set value, the relief valve opens to release the pressure, preventing equipment damage and safety accidents. As the core component of the relief valve, the valve disc's performance directly affects the valve's effectiveness. Existing relief valve discs suffer from poor sealing performance; during long-term use, the sealing ring is prone to loosening and displacement, leading to leakage and insufficient practicality. Therefore, it is necessary to redesign a slide-type relief valve disc to address these issues. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a slide-type relief valve disc.

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

[0006] A sliding relief valve disc includes a valve disc body. A sealing groove is formed on the outer wall of the valve disc body, and a sealing ring is slidably installed inside the sealing groove. Two moving grooves are formed on the upper end face of the valve disc body. A sliding rod is fixedly installed inside each of the two moving grooves. A sliding sleeve is slidably installed on the outer wall of each of the two sliding rods via a limiting mechanism. A compression spring is installed on the outer wall of each of the two sliding rods. The two ends of the compression springs are elastically connected to the inner wall of the moving groove and the outer wall of the sliding sleeve on the same side, respectively. A connecting plate is fixedly installed on the bottom wall of each of the two sliding sleeves. A pin is fixedly installed on the outer wall of each of the two connecting plates. The two pins are slidably installed inside the sealing groove. An insertion hole is formed on the inner wall of the sealing ring to mate with the two pins. A push plate is fixedly installed on the upper end face of each of the two sliding sleeves.

[0007] Preferably, the limiting mechanism includes a limiting rod fixedly installed inside the moving groove, the limiting rod sliding through the sliding sleeve.

[0008] Preferably, the bottom wall of the valve disc body is provided with multiple guide grooves, and the cross-section of each guide groove is arc-shaped.

[0009] Preferably, the outer wall of the valve disc body is provided with a plurality of mounting grooves, the plurality of mounting grooves are distributed equidistantly in a circle, an inner lubricating layer is slidably installed inside each mounting groove, two first screws are rotatably installed on the outer wall of each inner lubricating layer through a first fixing hole, and a first threaded hole that mates with the two first screws is provided on the inner wall of each mounting groove.

[0010] Preferably, a plurality of outer guide posts are fixedly installed on the outer wall of the valve disc body. The plurality of outer guide posts are distributed equidistantly in a circle. An outer lubricating layer is slidably installed on the outer wall of each outer guide post. A second screw is rotatably installed on the outer wall of each outer lubricating layer through a second fixing hole. A second threaded hole that mates with the second screw is opened on the outer wall of each outer guide post. Each inner lubricating layer and each outer lubricating layer are made of graphite material.

[0011] The beneficial effects of this utility model are:

[0012] 1. By setting up components such as a sliding sleeve, a compression spring, and a pin, after the sealing ring is installed in place, the compression spring applies force to the pin through the sliding sleeve and the connecting plate, so that it fits tightly with the sealing ring insertion hole. This structure simplifies the installation process, allows for quick replacement without tools, compensates for the wear and deformation of the sealing ring, stabilizes the sealing performance, prevents the sealing ring from shifting under high pressure conditions, reduces the risk of leakage, and extends the maintenance cycle.

[0013] 2. By setting up components such as an inner lubricating layer, an outer guide post, and an outer lubricating layer, the inner lubricating layer is in direct contact with the inner wall of the valve body, and the outer lubricating layer slides on the surface of the outer guide post. The self-lubricating properties of the graphite material reduce the coefficient of friction when the valve disc moves. The circumferentially distributed design of the outer guide post not only provides the valve disc with a precise sliding trajectory, but also evenly disperses the radial force, preventing the valve disc from getting stuck due to uneven force. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the valve disc of a slide-type relief valve proposed in this utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the vertical section structure;

[0016] Figure 3 This is a top view of the valve disc of a slide-type relief valve proposed in this utility model.

[0017] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;

[0018] Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point B in the diagram.

[0019] In the figure: 1 Valve disc body, 2 Sealing ring, 3 Slide rod, 4 Limit rod, 5 Slide sleeve, 6 Compression spring, 7 Connecting plate, 8 Pin, 9 Push plate, 10 Guide groove, 11 Inner lubrication layer, 12 First screw, 13 Outer guide post, 14 Outer lubrication layer, 15 Second screw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-5 A sliding relief valve disc includes a valve disc body 1. A sealing groove is formed on the outer wall of the valve disc body 1, and a sealing ring 2 is slidably installed inside the sealing groove. Two moving grooves are formed on the upper end face of the valve disc body 1. A sliding rod 3 is fixedly installed inside each of the two moving grooves. A sliding sleeve 5 is slidably installed on the outer wall of each of the two sliding rods 3 through a limiting mechanism. A compression spring 6 is installed on the outer wall of each of the two sliding rods 3. The two ends of the two compression springs 6 are elastically connected to the inner wall of the moving groove on the same side and the outer wall of the sliding sleeve 5, respectively. A connecting plate 7 is fixedly installed on the bottom wall of each of the two sliding sleeves 5. A pin 8 is fixedly installed on the outer wall of each of the two connecting plates 7. The two pins 8 are slidably installed inside the sealing groove. The inner wall of the sealing ring 2 has a hole that mates with the two pins 8. A push plate 9 is fixedly installed on the upper end face of each of the two sliding sleeves 5.

[0022] The limiting mechanism includes a limiting rod 4 fixedly installed inside the moving groove, and the limiting rod 4 slides through the sliding sleeve 5.

[0023] Furthermore, the limiting rod 4 and the sliding rod 3 cooperate with each other to provide precise guidance for the sliding of the sliding sleeve 5, ensuring that the sliding sleeve 5 will not deviate or shake during movement. It limits the range of motion of the sliding sleeve 5, ensuring that the pin 8 can always be accurately aligned with the insertion hole of the sealing ring 2, thereby maintaining a stable fit between the pin 8 and the sealing ring 2 and enhancing the reliability of the entire sealing structure.

[0024] The bottom wall of the valve disc body 1 is provided with multiple guide grooves 10, and the cross section of each guide groove 10 is arc-shaped.

[0025] Furthermore, the arc-shaped design of the guide groove 10 can effectively guide the fluid flow and optimize the fluid's trajectory. When the medium passes through the valve disc, the guide groove 10 can make the fluid pass through more smoothly, reduce the impact and resistance of the fluid on the valve disc, reduce the degree of fluid turbulence, and make the force on the valve disc more uniform, which helps to improve the stability and response speed of the valve disc during opening and closing.

[0026] The outer wall of the valve disc body 1 is provided with multiple mounting grooves, which are distributed equidistantly in a circle. An inner lubricating layer 11 is slidably installed inside each mounting groove. Two first screws 12 are rotatably installed on the outer wall of each inner lubricating layer 11 through a first fixing hole. A first threaded hole that mates with the two first screws 12 is provided on the inner wall of each mounting groove.

[0027] Furthermore, the equidistant distribution of the mounting grooves allows the inner lubricating layer 11 to be evenly distributed on the outer wall of the valve disc body 1, reducing friction between the valve disc and the inner wall of the valve body in all directions. The inner lubricating layer 11 is fixed in the mounting groove by the first screw 12. This detachable installation method facilitates the replacement of the worn lubricating layer in the future.

[0028] Multiple outer guide posts 13 are fixedly installed on the outer wall of the valve disc body 1. The multiple outer guide posts 13 are distributed equidistantly in a circle. An outer lubrication layer 14 is slidably installed on the outer wall of each outer guide post 13. A second screw 15 is rotatably installed on the outer wall of each outer lubrication layer 14 through a second fixing hole. A second threaded hole that mates with the second screw 15 is opened on the outer wall of each outer guide post 13. Both the inner lubrication layer 11 and the outer lubrication layer 14 are made of graphite material.

[0029] Furthermore, the outer guide posts 13 are circumferentially and equidistantly distributed on the outer wall of the valve disc body 1, providing precise guidance for the up-and-down sliding of the valve disc and ensuring that the valve disc will not tilt or jam during movement. The outer lubrication layer 14 is also made of graphite material, which works in conjunction with the inner lubrication layer 11 to further reduce the friction between the valve disc and the inner wall of the valve body from both the inside and outside directions. The outer lubrication layer 14 is fixed to the outer guide posts 13 by the second screw 15, which facilitates maintenance and replacement. The self-lubricating properties of graphite material can continuously play a lubricating role under various complex working conditions, effectively improving the working performance and service life of the valve disc.

[0030] When using this utility model, first push the two push plates 9 inward. The push plates 9 drive the sliding sleeve 5 to slide on the sliding rod 3, and the compression spring 6 is compressed. At the same time, the sliding sleeve 5 drives the pin 8 to be pulled out from the sealing groove through the connecting plate 7. At this time, slowly put the sealing ring 2 into the groove along the opening of the sealing groove to ensure that the sealing ring 2 falls completely into the sealing groove and is correctly positioned. Then, release the push plates 9. Under the elastic restoring force of the compression spring 6, the sliding sleeve 5 drives the pin 8 to slide in the opposite direction. The pin 8 is accurately inserted into the insertion hole on the inner wall of the sealing ring 2, and the sealing ring 2 is firmly fixed in the sealing groove, thus completing the installation steps of the sealing ring 2.

[0031] When the relief valve is working normally, if the pressure in the system does not exceed the set value, the valve disc body 1 is tightly attached to the valve seat of the relief valve under the action of the system pressure and its own gravity. At this time, the sealing ring 2 is in close contact with the valve seat under the fixation of the pin 8, forming a reliable sealing structure to prevent medium leakage. Once the pressure in the system exceeds the set value, the medium pressure will generate an upward thrust on the bottom wall of the valve disc body 1. Due to the arc design of the guide groove 10, the medium pressure can act more evenly on the valve disc body 1, reducing the situation of excessive local pressure. As the pressure continues to increase, when the thrust is sufficient to overcome the gravity of the valve disc body 1 and the pre-tightening force of the compression spring 6 on the sealing ring 2, the valve disc body 1 begins to move upward and open.

[0032] During the upward sliding of the valve disc body 1, the outer guide post 13 slides along the guide structure on the inner wall of the valve body. The outer lubrication layer 14 on the outer wall of the outer guide post 13 and the inner lubrication layer 11 on the outer wall of the valve disc body 1, with the good lubrication performance of the graphite material, greatly reduce the frictional resistance between the valve disc body 1 and the inner wall of the valve body, so that the valve disc body 1 can open quickly and smoothly. At the same time, the guide groove 10 guides the medium to pass through the valve disc body 1 in an orderly manner, reducing the impact and turbulence of the medium on the valve disc body 1, ensuring a stable and efficient release process. When the system pressure drops below the set value, the valve disc body 1, under its own weight and the action of the compression spring 6, slides down smoothly along the outer guide post 13 and re-fits tightly onto the valve seat, completing one release cycle.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A slide-type relief valve disc comprising a disc body (1), characterized in that, The sealing groove is internally slidably installed with a sealing ring (2), two moving grooves are formed in the upper end face of the valve body (1), two sliding rods (3) are fixedly installed in the moving grooves, the outer wall of the two sliding rods (3) is slidably installed with a sliding sleeve (5) through a limiting mechanism, the outer wall of the two sliding rods (3) is installed with an extrusion spring (6), the two ends of the two extrusion springs (6) are elastically connected with the inner wall of the moving groove and the outer wall of the sliding sleeve (5) on the same side respectively, the bottom wall of the two sliding sleeves (5) is fixedly installed with a connecting plate (7), the outer wall of the two connecting plates (7) is fixedly installed with a bolt (8), the two bolts (8) are slidably installed in the sealing groove, the inner wall of the sealing ring (2) is formed with a bolt hole matched with the two bolts (8), and the upper end face of the two sliding sleeves (5) is fixedly installed with a push plate (9).

2. A slide bleed valve disc according to claim 1, wherein, The limiting mechanism comprises a limiting rod (4) fixedly installed in the moving groove, and the limiting rod (4) slidably penetrates through the sliding sleeve (5).

3. A slide bleed valve disc according to claim 2, wherein, The bottom wall of the valve body (1) is formed with a plurality of flow guide grooves (10), and the cross section of each flow guide groove (10) is arc-shaped.

4. A slide bleed valve disc according to claim 3, wherein, The outer wall of the valve body (1) is formed with a plurality of installation grooves, the plurality of installation grooves are distributed at equal intervals in a circle, the inner wall of each installation groove is slidably installed with an inner lubricating layer (11), the outer wall of each inner lubricating layer (11) is rotatably installed with two first screws (12) through first fixing holes, and the inner wall of each installation groove is formed with first threaded holes matched with the two first screws (12).

5. A slide bleed valve disc according to claim 4, wherein, The outer wall of the valve body (1) is fixedly installed with a plurality of outer guide columns (13), the plurality of outer guide columns (13) are distributed at equal intervals in a circle, the outer wall of each outer guide column (13) is slidably installed with an outer lubricating layer (14), the outer wall of each outer lubricating layer (14) is rotatably installed with a second screw (15) through a second fixing hole, the outer wall of each outer guide column (13) is formed with a second threaded hole matched with the second screw (15), and each inner lubricating layer (11) and each outer lubricating layer (14) are made of graphite material.

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