A high-efficiency gate valve employing a variable flow path design to optimize fluid flow.

Abstract

This invention relates to the field of gate valve technology, specifically to a high-efficiency gate valve employing a variable flow channel design to optimize fluid flow. It includes a valve body, a main channel laterally opened within the valve body, a valve stem embedded in the valve body, and a valve disc installed at the bottom of the valve stem to block the flow within the main channel. A pair of symmetrical bosses are provided on the outer wall of the valve body, each boss having a cavity inside. A pressure-reducing channel communicating with the cavity is provided on the side wall of the main channel. A mounting base is fixedly installed on the inner wall of the pressure-reducing channel, and a shaft is fixedly connected to the mounting base. Two shaft blocks are rotatably sleeved on the shaft, and a pressure-reducing component is installed on each shaft block. The oscillation of the pressure-reducing component changes the structure of the main channel as a flow channel. Different surfaces of the pressure-reducing plate and multiple discharge grooves can instantly divide the water flow into multiple channels, changing the water flow from a laminar state to a turbulent state. This reduces the direct impact force of the water flow on the valve disc, protecting the valve disc and improving the stability of the gate valve during use.

Description

Technical Field

[0001] This invention relates to the field of gate valve technology, specifically to a high-efficiency gate valve employing a variable flow channel design to optimize fluid flow. Background Technology

[0002] Gate valves are widely used in water pipelines. A gate valve can be defined as a valve that uses a gate or wedge-shaped disc that moves perpendicular to the fluid to start or stop the flow of fluid in the pipeline. Gate valves are the most commonly used valve type in all process equipment. They are linear motion valves used to start or stop the flow of fluid.

[0003] When the gate valve is opened and water is introduced, the water flow inside the valve body rapidly impacts the gate valve disc, also known as the valve disc. This causes the valve disc to be subjected to a huge instantaneous impact force. Since the valve disc sealing surface is equipped with a rubber seal, the instantaneous impact force can easily cause the valve disc to be excessively squeezed along the water flow direction. As a result, the rubber seal on its surface may be deformed or even torn. The large water flow impact force will also cause a certain amount of vibration when the valve stem drives the valve disc to rotate. This will not only affect the stability of the valve body during use, but may also affect the sealing performance of the valve disc and the service life of the gate valve. Summary of the Invention

[0004] Technical solution

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency gate valve with a variable flow channel design to optimize fluid flow, comprising a valve body, a main channel laterally opened in the valve body, a valve stem embedded in the valve body, and a valve disc installed at the bottom of the valve stem to block the main channel. A pair of protrusions are symmetrically provided on the outer wall of the valve body, and a cavity is opened inside the protrusions. A pressure-reducing channel communicating with the cavity is opened on the side wall of the main channel. A mounting seat is fixedly installed on the inner wall of the pressure-reducing channel. A shaft is fixedly connected to the mounting seat. Two shaft blocks are rotatably sleeved on the shaft. A pressure-reducing component is installed on the shaft blocks.

[0006] The pressure-reducing component includes a pressure-reducing plate that is fixedly connected to two shaft blocks. The pressure-reducing plate has a multi-faceted bucket-shaped structure and one side has multiple drainage grooves for water diversion. A pressure-distributing component is rotatably arranged between the other two opposite sides of the pressure-reducing plate for water pressure distribution.

[0007] Preferably, the pressure distribution component includes a central shaft rotatably connected to two opposite surfaces of the pressure reducing plate, and multiple impellers are fixedly mounted on the outside of the central shaft.

[0008] Preferably, the impellers are arranged in a plurality of drain channels, with the blades of each impeller extending into the drain channel and a gap provided between the blades of each impeller and the side wall of the drain channel to avoid friction and collision between the two.

[0009] Preferably, the pressure relief channel is arranged perpendicular to the main channel, and the pressure relief channel has a cylindrical structure, with a rubber stopper filling the inner wall of the pressure relief channel.

[0010] Preferably, the rubber plug is interference-fitted with the pressure relief channel to separate and block the pressure relief channel and the cavity, and a circular hole is provided at the center of the rubber plug.

[0011] Preferably, a rotating shaft is connected through the side wall of the boss, one end of the rotating shaft extends into the cavity, and the other end of the rotating shaft is located outside the boss and fixed by bolts. A turntable is rotatably connected to one end of the rotating shaft located in the cavity, and a push-pull rod is movably connected to one side surface of the turntable. Both the turntable and the push-pull rod are located in the space formed by the cavity and the rubber plug.

[0012] Preferably, one end of the push-pull rod one is movably connected to the push-pull rod two, which movably passes through the circular hole at the center of the rubber plug, so that the other end of the push-pull rod two extends into the pressure relief channel.

[0013] Preferably, one end of the push-pull rod 2 located in the pressure relief channel is vertically connected to the connecting rod 2, and both ends of the connecting rod 2 are movably connected to the connecting rod 1. The other ends of the two connecting rods 1 are movably connected to the pressure relief plate, so that a dynamic connection is formed between the pressure relief plate, the connecting rod 1 and the connecting rod 2.

[0014] Preferably, the pressure reducing plate has an irregular fan-shaped cross-section and an open arc surface. The pressure-distributing component is located at the edge of the arc surface. When water is flowing through, the arc surface is located inside the main channel, and the pressure-distributing component is close to the side wall of the main channel and near the valve disc. When water is stopped, the arc surface is located inside the pressure reducing channel, and the pressure-distributing component is close to the port of the pressure reducing channel.

[0015] Beneficial effects

[0016] Compared with the prior art, the present invention provides a high-efficiency gate valve that adopts a variable flow channel design to optimize fluid flow, and has the following beneficial effects:

[0017] By incorporating pressure-reducing components, the pressure-reducing plate oscillates and rotates under water pressure after water flows in, altering the original structure of the main channel as a flow path. Simultaneously, at the instant the water flows into the pressure-reducing plate, different surfaces of the plate and multiple discharge grooves can instantly divide the water flow into multiple flow paths, transforming the water flow from a laminar flow state to a turbulent flow state. This reduces the direct impact force of the water flow on the valve disc, protecting the valve disc and correspondingly reducing the vibration generated by the valve stem when opening the valve disc, thus improving the stability of the gate valve during operation.

[0018] By setting up a pressure-distributing component, the component rotates immediately upon contact with the water flow. During rotation, the blades of the pressure-distributing component alternately penetrate the interior of the discharge groove, agitating the water flow and making the turbulent flow state more intense. This can change the flow velocity and pressure, further reducing the impact force of the water flow on the valve disc, and making the pressure reduction and protection effect on the valve disc surface more significant. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a diagram showing the distribution relationship between the valve body and its main channel and the pressure reducing channel of the present invention;

[0021] Figure 2 This is a cross-sectional view of the valve body of the present invention;

[0022] Figure 3 This is a cross-sectional view of the valve body and its pressure-reducing channel of the present invention;

[0023] Figure 4 This is an exploded view showing the connection between the pressure-reducing component and the mounting base of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the pressure reduction channel of the present invention;

[0025] Figure 6 This is an exploded view of the pressure-reducing component of the present invention;

[0026] Figure 7 This is a diagram showing the external shape of the valve body of the present invention;

[0027] Figure 8 This is a partial cross-sectional view of the pressure-reducing channel inside the valve body of the present invention from another perspective.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Valve body; 11. Main passage; 12. Pressure reducing passage; 121. Mounting base; 122. Shaft; 123. Shaft block; 13. Valve disc; 14. Valve stem;

[0030] 2. convex seat; 21. cavity; 211. pivot; 212. turntable; 213. push-pull rod one; 214. push-pull rod two;

[0031] 3. Rubber stopper;

[0032] 4. Pressure reducing plate; 41. Drainage channel; 42. Pressure distribution component; 43. Connecting rod one; 44. Connecting rod two. Detailed Implementation

[0033] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0034] like Figure 1-8 As shown, this is an embodiment of the present invention. To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency gate valve employing a variable flow channel design to optimize fluid flow includes a valve body 1, a main channel 11 laterally opened within the valve body 1, a valve stem 14 embedded and installed on the valve body 1, and a valve disc 13 installed at the bottom end of the valve stem 14 to block the main channel 11. A pair of protrusions 2 are symmetrically provided on the outer wall of the valve body 1, and a cavity 21 is opened inside the protrusions 2. A pressure-reducing channel 12 communicating with the cavity 21 is opened on the side wall of the main channel 11. A mounting seat 121 is fixedly installed on the inner wall of the pressure-reducing channel 12. A shaft 122 is fixedly connected to 121. Two shaft blocks 123 are rotatably sleeved on the shaft 122. A pressure reducing component is installed on the shaft block 123. The pressure reducing component includes a pressure reducing plate 4 fixedly connected to the two shaft blocks 123. The pressure reducing plate 4 has a multi-faceted bucket-shaped structure and multiple drainage grooves 41 are opened on one side for water diversion. Under the action of water flow, the pressure reducing plate 4 can swing and rotate around the shaft 122 as the central axis. At the moment when the water flow contacts the pressure reducing plate 4 and pushes the pressure reducing plate 4, the different sides of the pressure reducing plate 4 and the multiple drainage grooves 41 opened on one side can instantly divide the water flow into multiple channels.

[0035] Among them, such as Figure 3 As shown, the cross-section of the pressure reducing plate 4 is an irregular fan shape, and the arc surface of the pressure reducing plate 4 is an open structure. The pressure distribution component 42 is located at the edge of the arc surface. When water flows through, the arc surface is located inside the main channel 11, and the pressure distribution component 42 is close to the side wall of the main channel 11 and close to the valve disc 13. This changes the structure of the flow channel, so that the main channel 11, which is a fixed flow channel in the initial state, is transformed into a flow channel with pressure reducing plates 4 on both sides inside. Part of the water flow will first act on the pressure reducing plate 4 and flow along the edge of the pressure reducing plate 4 and multiple discharge grooves 41 to the valve disc 13. The pressure reducing plate 4 effectively blocks the water flow and performs a backwash force on the fluid, so that the fluid changes from a laminar flow state to a turbulent flow state. This reduces the direct impact force of the water flow on the valve disc 13 and also reduces the vibration of the valve stem 14 when opening the valve disc 13, thus improving the stability of the gate valve during use.

[0036] When the water is stopped, the arc surface is located inside the pressure reducing channel 12, the pressure dividing component 42 is close to the port of the pressure reducing channel 12, and the pressure reducing plate 4 returns to its initial state. When the pressure of the incoming water flow is unbalanced, the pressure reducing plate 4 will also swing irregularly under the force of the water flow, which can effectively buffer the impact force of the water flow on the valve disc 13.

[0037] Working principle and function of pressure reducing device: When valve disc 13 is opened, water flows in from one end of the main channel 11 and first acts on the pressure reducing plate 4 located at the edge of the pressure reducing channel 12 port. After being subjected to water pressure, the pressure reducing plate 4 swings and rotates around the shaft 122 as the central axis, changing the original structure of the main channel 11 as a flow channel. At the same time, when the water flows into contact with the pressure reducing plate 4, the different surfaces of the pressure reducing plate 4 and the multiple discharge grooves 41 can instantly divide the water flow into multiple flow channels, changing the water flow from a laminar flow state to a turbulent flow state. This reduces the direct impact force of the water flow on valve disc 13, and also reduces the vibration generated by valve stem 14 when opening valve disc 13, thus improving the stability of the gate valve during use.

[0038] Furthermore, such as Figure 2-4 As shown, a pressure-distributing component 42 is rotatably disposed between the other two opposite surfaces of the pressure-reducing plate 4 for water pressure distribution. The pressure-distributing component 42 includes a central shaft rotatably connected to the two opposite surfaces of the pressure-reducing plate 4. Multiple impellers are fixedly installed on the outside of the central shaft. The multiple impellers are respectively arranged at multiple discharge grooves 41. The blades of each impeller extend into the discharge groove 41. There is a gap between the blades of each impeller and the side wall of the discharge groove 41 to avoid friction and collision between the two. When the water flows through the pressure-distributing component 42, the multiple impellers rotate simultaneously.

[0039] Working principle and function of pressure dividing component 42: When the water flow acts on the pressure reducing plate 4, the pressure dividing component 42 rotates immediately upon contact with the water flow. During rotation, the blades of the pressure dividing component 42 alternately penetrate the interior of the discharge groove 41, and the agitation of the water flow will make the turbulent state of the water flow stronger, which can change the flow velocity and pressure, further reducing the impact force of the water flow on the valve disc 13, and making the pressure reduction and protection effect on the surface of the valve disc 13 more significant.

[0040] Furthermore, such as Figure 6-8 As shown, the pressure-reducing channel 12 is perpendicular to the main channel 11 and has a cylindrical structure. A rubber plug 3 fills the inner wall of the pressure-reducing channel 12, and the rubber plug 3 is press-fitted with the pressure-reducing channel 12 to separate and block the pressure-reducing channel 12 from the cavity 21. A circular hole is formed at the center of the rubber plug 3. A rotating shaft 211 is connected through the side wall of the boss 2. One end of the rotating shaft 211 extends into the cavity 21, and the other end of the rotating shaft 211 is located outside the boss 2 and fixed by bolts. A turntable 212 is rotatably connected to one end of a rotating shaft 211 inside cavity 21. A push-pull rod 213 is movably connected to one side surface of the turntable 212. The turntable 212 and the push-pull rod 213 are both located in the space formed by the cavity 21 and the rubber plug 3. The rubber plug 3 divides the pressure relief channel 12 into two spaces. No water will enter the space formed by the rubber plug 3 and the cavity 21. Therefore, the components in this space will not be immersed in water. The turntable 212 can rotate 360° under the rotational connection of the rotating shaft 211.

[0041] One end of the push-pull rod 213 is movably connected to the second push-pull rod 214. The second push-pull rod 214 passes through the circular hole at the center of the rubber plug 3, allowing the other end of the push-pull rod 214 to extend into the pressure-reducing channel 12. Since the circular hole at the center of the rubber plug 3 is straight after it is fixedly filled into the pressure-reducing channel 12, the push-pull rod 214 passing through the circular hole of the rubber plug 3 can move linearly. The push-pull rod 214 and the circular hole are also interference-fitted to prevent water inside the pressure-reducing channel 12 from entering the cavity 21 along the gap between them. One end of the push-pull rod 214 located in the pressure-reducing channel 12 is vertically connected to the second connecting rod 44. Both ends of the second connecting rod 44 are movably connected to the first connecting rod 43. The other end of 3 is movably connected to the pressure reducing plate 4, so that the pressure reducing plate 4, the first connecting rod 43 and the second connecting rod 44 form a dynamic connection. When the pressure reducing plate 4 swings around the shaft 122, the first connecting rod 43 and the second connecting rod 44 connected to the pressure reducing plate 4 will deflect to a certain extent, thereby pulling the second push-pull rod 214 to move. The second push-pull rod 214 drives the turntable 212 to rotate through the first push-pull rod 213. All components directly or indirectly connected to the pressure reducing plate 4 can move, which effectively avoids the rigid impact caused by the water flow impact on the pressure reducing plate 4, as well as the rigid impact when the pressure reducing plate 4 contacts the inner wall of the valve body 1. It can protect the pressure reducing components from damage, and also ensure the flexibility of the pressure reducing plate 4 during the swing process.

[0042] When installing a series of components directly or indirectly connected to the pressure reducing plate 4, first connect the cavity 21, the pressure reducing channel 12, and the main channel 11. Then, insert the rotating shaft 211 through the outside onto the boss 2 and fix the rotating shaft 211 located outside the boss 2 with bolts. Then, movably connect the push-pull rod 213 and the push-pull rod 214. Next, movably connect one end of the push-pull rod 213 to one side of the turntable 212. Then, vertically insert the turntable 212 into the cavity 21 along the main channel 11 and the pressure reducing channel 12, wherein the diameter of the turntable 212 is smaller than the spatial dimension of the cavity 21. This will not cause any obstruction when the turntable 212 is inserted. Connect the other side of the turntable 212 to one end of the rotating shaft 211. Then, firmly fill the pressure reducing channel 12 with the rubber plug 3 and let the push-pull rod 214 pass through the round hole of the rubber plug 3. Finally, use bolts to vertically connect the connecting rod 244 to one end of the push-pull rod 214. Connect a connecting rod 43 to each end of the connecting rod 44. The other ends of the two connecting rods 43 are movably connected to the pressure reducing plate 4. The installation and disassembly of these components are relatively convenient and will help with the maintenance of the gate valve in the future.

[0043] In summary, when valve 13 is opened to allow water to flow, the water enters from one end of the main channel 11 and first acts on the pressure-reducing plate 4 located at the edge of the pressure-reducing channel 12. Under water pressure, the pressure-reducing plate 4 oscillates and rotates around shaft 122, changing the initial structure of the main channel 11 as a flow channel. Simultaneously, at the instant the water flows into contact with the pressure-reducing plate 4, different surfaces of the plate 4 and multiple discharge grooves 41 instantly divide the water flow into multiple channels, changing the water flow from a laminar flow state to a turbulent flow state. This reduces the direct impact force of the water flow on valve 13. When the pressure-distributing component 42 contacts the water flow, it immediately rotates, further intensifying the turbulent flow state and reducing the impact force of the water flow on valve 13. The impact force of valve disc 13 causes the connecting rods 43 and 44 connected to the pressure reducing plate 4 to deflect to a certain extent during the swinging process. This deflects the push-pull rod 214, causing it to move. The push-pull rod 214 then drives the turntable 212 to rotate via the push-pull rod 213. All components directly or indirectly connected to the pressure reducing plate 4 are movable, effectively preventing the rigid impact caused by the water flow when the pressure reducing plate 4 is impacted, as well as the rigid impact when the pressure reducing plate 4 contacts the inner wall of the valve body 1. This protects the pressure reducing components from damage and ensures the flexibility of the pressure reducing plate 4 during the swinging process. The entire process not only protects the performance of valve disc 13 itself but also improves the stability of the gate valve during use.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency gate valve employing a variable flow channel design to optimize fluid flow, comprising a valve body (1), a main channel (11) laterally opened within the valve body (1), a valve stem (14) embedded and mounted on the valve body (1), and a valve disc (13) mounted at the bottom end of the valve stem (14) for blocking the main channel (11), characterized in that: A pair of protrusions (2) are symmetrically provided on the outer wall of the valve body (1). A cavity (21) is opened inside the protrusion (2). A pressure reducing channel (12) communicating with the cavity (21) is opened on the side wall of the main channel (11). A mounting seat (121) is fixedly installed on the inner wall of the pressure reducing channel (12). A shaft (122) is fixedly connected to the mounting seat (121). Two shaft blocks (123) are rotatably sleeved on the shaft (122). A pressure reducing component is installed on the shaft block (123). The pressure reducing component includes a pressure reducing plate (4) that is fixedly connected to two shaft blocks (123) at the same time. The pressure reducing plate (4) has a multi-faceted bucket-shaped structure and one side is provided with multiple drainage grooves (41) for water diversion. A pressure dividing component (42) is rotatably arranged between the other two opposite sides of the pressure reducing plate (4) for water pressure dividing. The pressure relief channel (12) is perpendicular to the main channel (11) and has a cylindrical structure. The inner wall of the pressure relief channel (12) is filled with a rubber plug (3). The rubber plug (3) is press-fitted with the pressure relief channel (12) to separate and block the pressure relief channel (12) and the cavity (21). A circular hole is opened at the center of the rubber plug (3). A rotating shaft (211) is connected through the side wall of the boss (2). One end of the rotating shaft (211) extends into the cavity (21), and the other end of the rotating shaft (211) is located outside the boss (2) and fixed by bolts. One end of the rotating shaft (211) located in the cavity (21) is rotatably connected to a turntable (212). A push-pull rod is movably connected to one side surface of the turntable (212). (213) The turntable (212) and the push-pull rod one (213) are both located in the space formed by the cavity (21) and the rubber plug (3). One end of the push-pull rod one (213) is movably connected to the push-pull rod two (214). The push-pull rod two (214) is movably inserted into the round hole at the center of the rubber plug (3), so that the other end of the push-pull rod two (214) extends into the pressure relief channel (12). One end of the push-pull rod two (214) located in the pressure relief channel (12) is vertically connected to the connecting rod two (44). Both ends of the connecting rod two (44) are movably connected to the connecting rod one (43). The other ends of the two connecting rods one (43) are movably connected to the pressure relief plate (4), so that a dynamic connection is formed between the pressure relief plate (4), the connecting rod one (43) and the connecting rod two (44).

2. The high-efficiency gate valve according to claim 1, which employs a variable flow channel design to optimize fluid flow, is characterized in that: The pressure distribution component (42) includes a central shaft rotatably connected to two opposite surfaces of the pressure reducing plate (4), and multiple impellers are fixedly installed on the outside of the central shaft.

3. A high-efficiency gate valve with a variable flow channel design to optimize fluid flow according to claim 2, characterized in that: Multiple impellers are respectively arranged in multiple drain grooves (41). The blades of each impeller extend into the drain groove (41). There is a gap between the blades of each impeller and the side wall of the drain groove (41) to avoid friction and collision between the two.

4. A high-efficiency gate valve with a variable flow channel design to optimize fluid flow according to claim 1, characterized in that: The pressure reducing plate (4) has an irregular fan-shaped cross section and an open structure on its arc surface. The pressure reducing component (42) is located at the edge of the arc surface. When water is flowing through, the arc surface is located inside the main channel (11), and the pressure reducing component (42) is close to the side wall of the main channel (11) and close to the valve disc (13). When water is stopped, the arc surface is located inside the pressure reducing channel (12), and the pressure reducing component (42) is close to the port of the pressure reducing channel (12).

Images