Efficient gate valve adopting variable flow channel design to optimize fluid flow

Abstract

The invention relates to the technical field of gate valves, in particular to an efficient gate valve adopting a variable runner design to optimize fluid flowing, which comprises a valve body, a main channel transversely formed in the valve body, a valve rod embedded in the valve body and a valve clack mounted at the bottom end of the valve rod and used for blocking the interior of the main channel, and a pair of convex seats are symmetrically arranged on the outer wall of the valve body; a cavity is formed in the protruding base, a pressure reduction channel communicated with the cavity is formed in the side wall of the main channel, a mounting base is fixedly mounted on the inner wall of the pressure reduction channel, a shaft rod is fixedly connected to the mounting base, the shaft rod is rotationally sleeved with two shaft blocks, and a pressure reduction piece is mounted on each shaft block. The structure that the main channel serves as a flow channel is changed through swinging of the pressure reducing part, water flow can be instantly divided into the flow channels through the different faces of the pressure reducing plate and the flow discharging grooves, the water flow is converted into the flocculation flow state from the laminar flow state, then the straight face impact force of the water flow to the valve clack can be reduced, the valve clack is protected, and the stability of the gate valve in the using process is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gate valves, and in particular to a high-efficiency gate valve which adopts a variable flow channel design to optimize fluid flow. Background Art

[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 valve is the most commonly used valve type in all process equipment. It is a linear motion valve that is used to start or stop the flow of fluid.

[0003] When the gate valve is opened and water is flowing, the water flow in the valve body quickly impacts the disc of the gate valve, which can also be called a valve disc, causing the valve disc to be subjected to huge instantaneous impact force. Since a rubber seal is provided on the sealing surface of the valve disc, the instantaneous impact force can easily cause the valve disc to be excessively squeezed along the direction of the water flow, so the rubber seal on its surface may be deformed or even torn. The large water flow impact force will also cause a certain vibration when the valve stem drives the valve disc to rotate, which will not only affect the stability of the valve body during use, but also affect the sealing performance of the valve disc and the service life of the gate valve. Summary of the invention

[0004] Technical Solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency gate valve adopting a variable flow channel design to optimize fluid flow, comprising a valve body, a main channel transversely opened in the valve body, a valve stem embedded and installed in the valve body, and a valve disc installed at the bottom end of the valve stem for blocking the main channel, a pair of convex seats are symmetrically arranged on the outer wall of the valve body, a cavity is opened inside the convex seat, 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 rod is fixedly connected to the mounting seat, two shaft blocks are rotatably sleeved on the shaft rod, and a pressure-reducing member is installed on the shaft block; The pressure reducing member comprises a pressure reducing plate fixedly connected to two shaft blocks at the same time. The pressure reducing plate is a multi-faceted bucket-shaped structure and one side of the plate is provided with a plurality of drainage grooves for water diversion. A pressure dividing member is rotatably arranged between the other two opposite sides of the pressure reducing plate for water pressure division.

[0005] Preferably, the pressure dividing member comprises a central shaft rotatably connected to two opposite surfaces of the pressure reducing plate, and a plurality of impellers are fixedly mounted on the outside of the central shaft.

[0006] Preferably, the plurality of impellers are respectively arranged at a plurality of drainage grooves, and the blades of each impeller extend into the drainage groove. A gap is provided between the blades of each impeller and the side wall of the drainage groove to avoid friction and collision between the two.

[0007] Preferably, the decompression channel is arranged perpendicular to the main channel, and the decompression channel is a cylindrical structure, and the inner wall of the decompression channel is filled with a rubber plug.

[0008] Preferably, the rubber plug is interference fit with the pressure reducing channel to separate and block the pressure reducing channel and the cavity, and a circular hole is provided at the center of the rubber plug.

[0009] 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. One end of the rotating shaft located in the cavity is rotatably connected to a turntable, and a push-pull rod is movably connected to one side surface of the turntable. The turntable and the push-pull rod are both located in the space formed by the cavity and the rubber plug.

[0010] Preferably, one end of the push-pull rod 1 is movably connected to the push-pull rod 2, and the push-pull rod 2 movably penetrates into the circular hole at the center of the rubber plug, so that the other end of the push-pull rod 2 extends into the decompression channel.

[0011] Preferably, one end of the push-pull rod 2 located in the decompression channel is vertically connected to the connecting rod 2, both ends of the connecting rod 2 are movably connected to the connecting rod 1, and the other ends of the two connecting rods 1 are movably connected to the decompression plate, so that a dynamic connection is formed between the decompression plate, the connecting rod 1 and the connecting rod 2.

[0012] Preferably, the cross-section of the pressure reducing plate is an irregular fan-shaped shape, the arc surface of the pressure reducing plate is an open structure, the pressure divider is located at the edge of the arc surface, when water flows, the arc surface is located in the main channel, the pressure divider is close to the side wall of the main channel and close to the valve disc, when water stops, the arc surface is located in the pressure reducing channel, and the pressure divider is close to the port position of the pressure reducing channel.

[0013] Beneficial Effects 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: By setting up the pressure reducing parts, when the water flows in, the pressure reducing plate will swing and rotate under the action of water pressure, thus changing the original structure of the main channel as the flow channel. At the same time, at the moment when the water flows in, the different surfaces of the pressure reducing plate and multiple discharge grooves can instantly divide the water flow into multiple flow channels, and change the water flow from laminar flow state to flocculent flow state, thereby reducing the direct impact force of the water flow on the valve disc, protecting the valve disc, and correspondingly reducing the vibration of the valve stem when opening the valve disc, thereby improving the stability of the gate valve during use.

[0014] By setting a pressure divider, when the pressure divider contacts the water flow, it rotates immediately. The blades of the pressure divider during rotation alternately penetrate the inside of the discharge groove. The stirring of the water flow will make the flocculation state of the water flow more intense, and can change the flow rate and pressure, further reducing the impact force of the water flow on the valve disc, and the pressure reduction and protection effect on the surface of the valve disc are more significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 The figure is a distribution relationship diagram of the valve body and its main channel and pressure reducing channel of the present invention; Figure 2 It is a partial cross-sectional view of the valve body of the present invention; Figure 3 It is a cross-sectional view of the valve body and the pressure reducing passage thereof of the present invention; Figure 4 This is a disassembled view of the connection between the pressure relief member and the mounting seat of the present invention; Figure 5 This is a schematic diagram of the internal structure of the decompression channel of the present invention; Figure 6 This is a structural exploded view of the pressure relief member of the present invention; Figure 7 This is a diagram showing the external appearance of the valve body of the present invention; Figure 8 This is a partial cross-sectional view from another perspective of the pressure reducing passage in the valve body of the present invention.

[0016] Description of reference numerals: 1. Valve body; 11. Main channel; 12. Pressure reducing channel; 121. Mounting seat; 122. Shaft; 123. Shaft block; 13. Valve disc; 14. Valve stem; 2. convex seat; 21. cavity; 211. rotating shaft; 212. rotating disk; 213. push-pull rod 1; 214. push-pull rod 2; 3. Rubber stopper; 4. Pressure relief plate; 41. Discharge trough; 42. Pressure divider; 43. Connecting rod one; 44. Connecting rod two. DETAILED DESCRIPTION

[0017] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] like Figure 1-8As shown in the figure, it is an embodiment of the present invention. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency gate valve adopting a variable flow channel design to optimize fluid flow, comprising a valve body 1, a main channel 11 transversely opened in 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 for blocking the main channel 11, a pair of convex seats 2 are symmetrically arranged on the outer wall of the valve body 1, a cavity 21 is opened inside the convex seat 2, a pressure reducing channel 12 penetrating 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, and the mounting seat A shaft 122 is fixedly connected to 121, and two shaft blocks 123 are rotatably sleeved on the shaft 122. A pressure relief member is installed on the shaft block 123, and the pressure relief member includes a pressure relief plate 4 fixedly connected to the two shaft blocks 123 at the same time. The pressure relief plate 4 is a multi-faceted bucket-shaped structure and one of its faces is provided with a plurality of drainage grooves 41 for water diversion. The pressure relief plate 4 can swing and rotate with the shaft 122 as the central axis under the action of the water flow. At the moment when the water flow contacts the pressure relief plate 4 and pushes the pressure relief plate 4, the different faces of the pressure relief plate 4 and the plurality of drainage grooves 41 provided on one of the faces can instantly divide the water flow into a plurality of flow channels; Among them, Figure 3 As shown, the cross section of the pressure reducing plate 4 is an irregular fan-shaped shape, the arc surface of the pressure reducing plate 4 is an open structure, and the pressure dividing piece 42 is located at the edge of the arc surface. When water is flowing, the arc surface is located in the main channel 11, and the pressure dividing piece 42 is close to the side wall of the main channel 11 and close to the valve disc 13, 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, and the structure of the flow channel is changed. Part of the water flow will first act on the pressure reducing plate 4, and flow to the valve disc 13 along the edge of the pressure reducing plate 4 and multiple discharge grooves 41. The pressure reducing plate 4 effectively blocks the water flow and performs a recoil force on the fluid, so that the fluid is transformed from a laminar flow state to a flocculent flow state, thereby reducing the direct impact force of the water flow on the valve disc 13, and correspondingly reducing the vibration of the valve stem 14 when the valve disc 13 is opened, thereby improving the stability of the gate valve during use; When water is stopped, the arc surface is located in the pressure reducing channel 12, the pressure dividing member 42 is close to the port position of the pressure reducing channel 12, and the pressure reducing plate 4 returns to the 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; Working principle and function of the pressure reducing component: When the valve flap 13 is opened, the water flows into the valve flap 11 from one end and first acts on the pressure reducing plate 4 at the edge of the port of the pressure reducing channel 12. After being acted upon by the water pressure, the pressure reducing plate 4 swings and rotates around the shaft 122 as the central axis, thereby changing the original structure of the main channel 11 as a flow channel. At the same time, at the moment when the water flows in 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, so that the water flow changes from a laminar flow state to a flocculent flow state, thereby reducing the direct impact force of the water flow on the valve flap 13, and correspondingly reducing the vibration of the valve stem 14 when the valve flap 13 is opened, thereby improving the stability of the gate valve during use.

[0019] Further, such as Figure 2-4 As shown, a pressure dividing member 42 is rotatably provided between the other two opposite surfaces of the pressure reducing plate 4, which is used for water pressure dividing. The pressure dividing member 42 includes a central shaft rotatably connected to the two opposite surfaces of the pressure reducing plate 4, and a plurality of impellers are fixedly installed on the outside of the central shaft. The plurality of impellers are respectively arranged at a plurality of discharge grooves 41, and the blades of each impeller extend into the discharge groove 41. A gap is provided 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 dividing member 42, the plurality of impellers rotate simultaneously. The working principle and function of the pressure divider 42: When the water flow acts on the pressure reducing plate 4, the pressure divider 42 rotates immediately when it contacts the water flow. The blades of the pressure divider 42 during rotation alternately penetrate the inside of the discharge groove 41, and the stirring of the water flow will make the flocculation state of the water flow more intense, which can change the flow rate and pressure, further reduce the impact force of the water flow on the valve flap 13, and the pressure reduction and protection effect on the surface of the valve flap 13 are more significant.

[0020] Further, such as Figure 6-8 As shown, the pressure relief channel 12 is vertically arranged with the main channel 11, and the pressure relief channel 12 is a cylindrical structure. The inner wall of the pressure relief channel 12 is filled with a rubber plug 3. The rubber plug 3 is interference fit with the pressure relief channel 12, and is used 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 convex seat 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 convex seat 2 and is fixed by bolts. One end of the rotating shaft 211 in the cavity 21 is rotatably connected to a rotating disk 212, and a push-pull rod 213 is movably connected to one side surface of the rotating disk 212. The rotating disk 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. The space formed by the rubber plug 3 and the cavity 21 will not enter the water flow, so the components in this space will not be immersed in water. The rotating disk 212 can rotate 360 ​​degrees under the rotating connection of the rotating shaft 211; Among them, one end of the push-pull rod 1 213 is movably connected to the push-pull rod 214, and the push-pull rod 214 movably penetrates into the circular hole at the center position of the rubber plug 3, so that the other end of the push-pull rod 214 extends into the pressure relief channel 12. Since the circular hole at the center position of the rubber plug 3 is straightly opened after the rubber plug 3 is fixedly filled in the pressure relief channel 12, the push-pull rod 214 penetrating into the circular hole of the rubber plug 3 can move linearly, and there is also an interference fit between the push-pull rod 214 and the circular hole to prevent the water flow inside the pressure relief channel 12 from entering the cavity 21 along the gap between the two. One end of the push-pull rod 214 located in the pressure relief channel 12 is vertically connected to the connecting rod 2 44, and both ends of the connecting rod 2 44 are movably connected to the connecting rod 1 43. The two connecting rods 1 43 are connected to the connecting rod 1 44. The other ends of the pressure reducing plate 3 are movably connected to the pressure reducing plate 4, so that a dynamic connection is formed between the pressure reducing plate 4, the connecting rod 1 43 and the connecting rod 2 44. When the pressure reducing plate 4 swings with the shaft 122 as the central axis, the connecting rod 1 43 and the connecting rod 2 44 connected to the pressure reducing plate 4 will deflect to a certain extent, thereby pulling the push-pull rod 214 to move, and the push-pull rod 214 drives the turntable 212 to rotate through the push-pull rod 1 213. This series of components directly or indirectly connected to the pressure reducing plate 4 can be movable, effectively avoiding the rigid impact caused by the pressure reducing plate 4 when it is impacted by water flow, and the rigid impact when the pressure reducing plate 4 contacts the inner wall of the valve body 1, which can protect the pressure reducing parts from damage, and also ensure the flexibility of the pressure reducing plate 4 during the swinging process; When installing a series of components directly or indirectly connected to the pressure relief plate 4, firstly, the cavity 21, the pressure relief channel 12 and the main channel 11 are connected to each other, and then the rotating shaft 211 is firstly passed through the convex seat 2 from the outside, and the rotating shaft 211 located outside the convex seat 2 is fixed by bolts, so that the push-pull rod 1 213 and the push-pull rod 2 214 are movably connected, and then one end of the push-pull rod 1 213 is movably connected to one side of the rotating disk 212, and then the rotating disk 212 is vertically placed in the cavity 21 along the main channel 11 and the pressure relief channel 12 in sequence, wherein the diameter of the rotating disk 212 is smaller than the space size of the cavity 21 , there will be no obstruction when the turntable 212 is placed in, the other side of the turntable 212 is connected to one end of the rotating shaft 211, and then the rubber plug 3 is firmly filled in the pressure reducing channel 12, and the push-pull rod 214 is passed through the round hole of the rubber plug 3, and finally the connecting rod 244 is vertically connected to one end of the push-pull rod 244 with bolts, and a connecting rod 1 43 is movably connected to both ends of the connecting rod 244, and the other ends of the two connecting rods 1 43 are movably connected to the pressure reducing plate 4. The installation and disassembly of these components are relatively convenient, which is helpful for the later maintenance of the gate valve.

[0021] In summary, when the valve flap 13 is opened to pass water, the water flows in from one end of the main channel 11 and first acts on the pressure reducing plate 4 at the edge of the port of the pressure reducing channel 12. After being acted upon by the water pressure, the pressure reducing plate 4 swings and rotates with the shaft 122 as the central axis, thereby changing the structure of the main channel 11 as a flow channel. At the same time, at the moment when the water flows in 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, so that the water flow changes from a laminar flow state to a flocculation state, thereby reducing the direct impact force of the water flow on the valve flap 13. When the pressure dividing member 42 contacts the water flow, it immediately rotates, and the agitation of the water flow makes the flocculation state of the water flow more intense, further reducing the water flow on the valve flap 13. Due to the impact force of the valve disc 13, the connecting rod 1 43 and the connecting rod 2 44 connected to the pressure relief plate 4 will deflect to a certain extent during the swinging process of the pressure relief plate 4, thereby pulling the push-pull rod 214 to move, and the push-pull rod 214 drives the turntable 212 to rotate through the push-pull rod 1 213. This series of components directly or indirectly connected to the pressure relief plate 4 are all movable, which effectively avoids the rigid impact of the pressure relief plate 4 when it is impacted by water flow, and the rigid impact when the pressure relief plate 4 contacts the inner wall of the valve body 1, which can protect the pressure relief parts from damage, and also ensures the flexibility of the pressure relief plate 4 during the swinging process. The whole process not only protects the performance of the valve disc 13 itself, but also improves the stability of the gate valve during use.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency gate valve adopting a variable flow channel design to optimize fluid flow, comprising a valve body (1), a main channel (11) transversely opened in the valve body (1), a valve stem (14) embedded in the valve body (1), and a valve disc (13) installed at the bottom end of the valve stem (14) for blocking the main channel (11), characterized in that: A pair of convex seats (2) are symmetrically arranged on the outer wall of the valve body (1), a cavity (21) is provided inside the convex seats (2), a pressure reducing channel (12) which is in communication with the cavity (21) is provided 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 rod (122), and a pressure reducing member is installed on the shaft block (123); The pressure reducing member comprises a pressure reducing plate (4) fixedly connected to two shaft blocks (123) at the same time, the pressure reducing plate (4) being a multi-faceted bucket-shaped structure and one face of which is provided with a plurality of drainage grooves (41) for water diversion, and a pressure dividing member (42) rotatably provided between the other two opposite faces of the pressure reducing plate (4) for water pressure division.

2. A high-efficiency gate valve with a variable flow channel design to optimize fluid flow according to claim 1, characterized in that: The pressure dividing member (42) comprises a central shaft rotatably connected to two opposite surfaces of the pressure reducing plate (4), and a plurality of impellers are fixedly mounted on the outside of the central shaft.

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

4. The high-efficiency gate valve with variable flow channel design to optimize fluid flow according to claim 1, characterized in that: The decompression channel (12) is arranged perpendicularly to the main channel (11), and the decompression channel (12) is a cylindrical structure. The inner wall of the decompression channel (12) is filled with a rubber plug (3).

5. A high-efficiency gate valve using a variable flow channel design to optimize fluid flow according to claim 4, characterized in that: The rubber plug (3) is interference-fitted with the decompression channel (12) and is used to separate and block the decompression channel (12) and the cavity (21). A circular hole is provided at the center of the rubber plug (3).

6. A high-efficiency gate valve using a variable flow channel design to optimize fluid flow according to claim 5, characterized in that: A rotating shaft (211) is connected through the side wall of the convex seat (2), one end of the rotating shaft (211) extends into the cavity (21), the other end of the rotating shaft (211) is located outside the convex seat (2) and is fixed by bolts, one end of the rotating shaft (211) located in the cavity (21) is rotatably connected to a rotating disk (212), one side surface of the rotating disk (212) is movably connected to a push-pull rod (213), and the rotating disk (212) and the push-pull rod (213) are both located in a space formed by the cavity (21) and the rubber plug (3).

7. A high-efficiency gate valve using a variable flow channel design to optimize fluid flow according to claim 6, characterized in that: One end of the push-pull rod 1 (213) is movably connected to the push-pull rod 2 (214), and the push-pull rod 2 (214) movably penetrates into the circular hole at the center of the rubber plug (3), so that the other end of the push-pull rod 2 (214) extends into the pressure reducing channel (12).

8. A high-efficiency gate valve using a variable flow channel design to optimize fluid flow according to claim 7, characterized in that: One end of the push-pull rod 2 (214) located in the decompression channel (12) is vertically connected to the connecting rod 2 (44), and both ends of the connecting rod 2 (44) are movably connected to the connecting rod 1 (43), and the other ends of the two connecting rods 1 (43) are movably connected to the decompression plate (4), so that a dynamic connection is formed between the decompression plate (4), the connecting rod 1 (43) and the connecting rod 2 (44).

9. A high-efficiency gate valve with a variable flow channel design to optimize fluid flow according to claim 1, characterized in that: The cross section of the pressure reducing plate (4) is an irregular sector shape. The arc surface of the pressure reducing plate (4) is an open structure. The pressure dividing piece (42) is located at the edge of the arc surface. When water is flowing, the arc surface is located in the main channel (11). The pressure dividing piece (42) is close to the side wall of the main channel (11) and close to the valve flap (13). When water is stopped, the arc surface is located in the pressure reducing channel (12). The pressure dividing piece (42) is close to the port position of the pressure reducing channel (12).

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