CN215059936U - Flow regulating valve - Google Patents
Flow regulating valve Download PDFInfo
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- CN215059936U CN215059936U CN202120581992.7U CN202120581992U CN215059936U CN 215059936 U CN215059936 U CN 215059936U CN 202120581992 U CN202120581992 U CN 202120581992U CN 215059936 U CN215059936 U CN 215059936U
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Abstract
The utility model discloses a flow regulating valve, including the main valve body, be fixed with the outlet valve in the play water end of the main valve body, be fixed with the inner bag of opening towards the outlet valve in the main valve body, the inside slip of inner bag open end is equipped with the adjusting piston of tube-shape and is used for driving adjusting piston axial displacement's actuating mechanism. An exhaust mechanism is arranged above the main valve body. Rivers flow to play water valve body from the main valve body, it is big when both ends pressure differential, because the quality of bubble is less than fluidic quality in the fluid, bubble and gaseous meeting rise from the runner in get into the air guide tube, the bubble is extrusion fracture in the corner of air guide way one and air guide way two, gaseous gets into the aiutage by air guide way two, the air current that gets into in the aiutage blows arc flabellum and rotates, arc flabellum is when the rotation, its end can be used in the protruding edge of lower connecting rod, lower connecting rod of drop-down, the effect through the connecting rod makes the one end upwarp of closing cap open, exhaust, prevent to produce the turbulent flow, the smooth operation of protection valve.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a flow regulating valve.
Background
The piston type flow regulating valve controls the opening of the valve according to the back and forth movement of a piston in the valve body, thereby effectively controlling the flow, the pressure and the like. The flow channel in the piston valve is in an axial symmetry shape, no matter where the piston is located, the section in the valve cavity is always in an annular shape, when the valve is opened, fluid passes through, and when the piston valve is completely closed, water flow is effectively prevented, zero leakage is achieved, and therefore transmission of upstream pressure is avoided.
The flow regulating valve is widely applied to water plants and power plants for controlling the flow of fluid, but when the fluid flows through the flow regulating valve, a small part of air is mixed into the fluid due to the change of the pressure market of the fluid, and when the fluid mixed with air flows through the flow regulating valve, the fluid mixed with air impacts the valve body of the flow regulating valve due to the action of high pressure, so that the valve body of the flow regulating valve is subjected to cavitation erosion.
The existing flow regulating valve shrinks towards the axis at an outlet, and guides water flow to reversely collide and dissipate energy at the center of a valve port, so that cavitation bubbles are annihilated at the center, and the damage of cavitation possibly generated due to throttling to a valve body and a pipeline is avoided. However, since the cross-sectional diameter of the formed throttling channel is fixed when the throttling structure performs throttling and cannot be changed along with the change of the pressure of the fluid passing through the flow regulating valve, once the pressure of the fluid passing through the flow regulating valve is changed, the cavitation reduction effect of the throttling structure is greatly reduced, and the main reason is that once the pressure of the fluid passing through the flow regulating valve is lower, the throttling structure cannot eject the fluid at high speed through the throttling structure and guide the fluid with air in a direction away from the flow regulating valve.
In addition, when the valve is closed, the gas is collected in the valve, which can not discharge the excessive gas in the pipeline, and the risk of the occurrence of the closing water hammer is generated. When the pressure difference of the flow regulating valve is too large, turbulent flow can be generated in the valve, so that the flow regulating valve generates vibration to generate noise, and cavitation can not be effectively eliminated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a flow regulating valve that can self-bleeding is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a flow regulating valve comprises a main valve body, wherein a water outlet valve is fixed at the water outlet end of the main valve body, an inner container with an opening facing the water outlet valve is fixed in the main valve body, a flow passage for fluid to flow to the water outlet valve is reserved between the inner container and the main valve body, and a cylindrical regulating piston and a driving mechanism for driving the regulating piston to axially move are arranged in the opening end of the inner container in a sliding manner; it is characterized in that the preparation method is characterized in that,
the top of the main valve body is equipped with exhaust mechanism, exhaust mechanism includes:
the exhaust funnel is vertically fixed on the main valve body, a sealing cover is rotatably arranged at the top of the exhaust funnel through a rotating shaft, the rotating shaft is positioned at the eccentric position of the sealing cover, and a sealing strip is arranged at the edge of the sealing cover;
the rotary shaft can be fixed in the exhaust funnel, and a plurality of arc-shaped fan blades are uniformly distributed on the rotary shaft in the circumferential direction;
the air guide cylinder is provided with a first air guide passage and a second air guide passage which are communicated in an angle shape, the first air guide passage is vertically communicated with the main valve body, and the first air guide passage is communicated with the exhaust cylinder and arranged along the tangential direction of the rotation of the arc-shaped fan blades; and
the connecting rod assembly is provided with an upper connecting rod and a lower connecting rod which are rotatably connected, one side of the upper end of the upper connecting rod, which is close to the rotating shaft, on the sealing cover is rotatably connected, a vertical guide structure is arranged between the lower connecting rod and the inner wall of the exhaust funnel, a radial convex edge is arranged at the lower end of the lower connecting rod, and the tail end of the arc-shaped fan blade can be contacted with the convex edge in the rotating process.
The further technical proposal is that a sewage discharge pipe with a control valve is arranged at the bottom of the main valve body.
The further technical scheme lies in that the flow regulating valve further comprises a reset assembly for driving the connecting rod assembly to reset upwards, and the reset assembly comprises:
the upper end of the return spring is fixed with the convex edge of the lower connecting rod, and the lower end of the return spring is fixed with the side wall of the exhaust funnel; and
and the upper stop block is fixed on the inner wall of the exhaust funnel above the sealing cover, is positioned on one side of the sealing cover close to the rotating shaft and is used for limiting the upward warping of the sealing cover on the side.
A further technical solution is that the reset assembly further comprises:
the lower stop block is fixed on the inner wall of the exhaust funnel below the sealing cover, is positioned on one side of the sealing cover far away from the rotating shaft, and limits the downward turning of the sealing cover on the side.
The second air guide channel is conical, and the small end of the second air guide channel is communicated with the exhaust funnel.
The technical scheme is that a bubble breaking plate is arranged on the side wall of the first air guide channel.
The technical scheme is that a squirrel cage is fixed at one end, facing the water outlet valve, of the adjusting piston, and filter holes are formed in the squirrel cage.
A further technical scheme is that an axial guide rail and a sealing ring which are matched in a concave-convex mode are arranged between the adjusting piston and the inner container.
A further technical solution is that the drive mechanism comprises:
the valve shaft is rotatably arranged in the inner container, one end of the valve shaft extends out of the main valve body and is connected with a driving device for driving the valve shaft to rotate;
a crank, one end of which is fixed with the valve shaft; and
one end of the connecting rod is connected with the adjusting piston through a connecting disc, and the other end of the connecting rod is rotatably connected with the crank
The technical scheme is that the guide structure comprises a guide ring which is fixed on the inner wall of the exhaust funnel, and the lower connecting rod penetrates through the guide ring in a sliding manner.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
rivers flow to play water valve body from the main valve body, it is big when both ends pressure differential, because the quality of bubble is less than fluidic quality in the fluid, bubble and gaseous meeting rise from the runner in get into the air guide tube, the bubble is extrusion fracture in the corner of air guide way one and air guide way two, gaseous gets into the aiutage by air guide way two, the air current that gets into in the aiutage blows arc flabellum and rotates, arc flabellum is when the rotation, its end can be used in the protruding edge of lower connecting rod, lower connecting rod of drop-down, the effect through the connecting rod makes the one end upwarp of closing cap open, exhaust, prevent to produce the turbulent flow, the smooth operation of protection valve.
When no gas enters, because the rotating shaft on the sealing plate is arranged at an eccentric position, the sealing plate is reset and closed under the gravity of the upwarp end sealing plate, and the exhaust funnel is closed.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view from another angle of the present invention;
fig. 3 is a schematic structural diagram of the middle exhaust mechanism of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 to 3, a flow regulating valve includes a main valve body 1, the main valve body 1 is contracted toward an axis at an outlet end to form a throttling structure, and a water outlet valve 2 is fixed at a water outlet end of the main valve body 1 through a flange structure. An inner container 3 with an opening facing the water outlet valve 2 is fixed in the main valve body 1 through a radial fin, a flow passage for fluid to flow to the water outlet valve 2 is reserved between the inner container 3 and the main valve body 1, and a cylindrical adjusting piston 4 and a driving mechanism for driving the adjusting piston 4 to axially move are arranged in the inner part of the opening end of the inner container 3 in a sliding manner. The outlet end of the main valve body 1 is also provided with a valve seat, a main sealing ring is arranged on the valve seat, and the main sealing ring and the piston can be in contact sealing to realize the closing of the flow regulating valve.
In the flow regulating valve structure, an axial guide rail and a sealing ring which are in concave-convex fit are arranged between the regulating piston 4 and the inner container 3. The drive mechanism includes a valve shaft 61, a crank 62, and a connecting rod 63. The valve shaft 61 is rotatably arranged in the inner container 3, one end of the valve shaft extends out of the main valve body 1 and is connected with a driving device for driving the main valve body to rotate, one end of the crank 62 is fixed with the valve shaft 61, one end of the connecting rod 63 is connected with the adjusting piston 4 through a connecting disc, the connecting rod 63 and the connecting disc are in a rotatable connection mode, and the other end of the connecting rod 63 is rotatably connected with the crank 62. When the valve is in operation, the driving device drives the valve shaft 61 to rotate, and the adjustment piston 4 can move along the axial guide rail under the matching linkage of the crank 62 and the connecting rod 63, so that the opening of the valve can be adjusted.
A squirrel cage 5 is fixed at one end of the adjusting piston 4 facing the water outlet valve 2, and filter holes are formed in the squirrel cage 5. The squirrel cage 5 can filter impurities in the fluid, can break bubbles in the fluid and guide water flow to reversely collide at the center of the valve port for energy dissipation.
In order to avoid the influence of the gas in the valve body on the use of the valve body, an exhaust mechanism 100 is provided above the main valve body 1, and the gas in the valve body can be automatically exhausted. The exhaust mechanism 100 includes an exhaust cylinder 110, a rotary shaft 120, a gas cylinder 130, and a link assembly.
The exhaust funnel 110 is vertically fixed on the main valve body 1, a sealing cover 111 is rotatably arranged at the top of the exhaust funnel 110 through a rotating shaft, the rotating shaft is located at the eccentric position of the sealing cover 111, a sealing strip is arranged at the edge of the sealing cover 111, and the sealing performance of the sealing cover 111 contacting with the exhaust funnel 110 is improved due to the arrangement of the sealing strip. The rotating shaft is arranged at the eccentric position of the sealing cover 111, and the balance of the sealing plate can be realized by utilizing the lever principle.
But being fixed in the aiutage 110 of rotation axis 120 pivot, it has a plurality of arc flabellums 121 to go up the annular equipartition on rotation axis 120, and arc flabellum 121 adopts lighter material like hard plastic to make, the rotatory start of being convenient for.
The air guide cylinder 130 is provided with a first air guide channel 131 and a second air guide channel 132 which are communicated in an angle shape, the first air guide channel 131 is vertically communicated with the main valve body 1, and the first air guide channel 131 is communicated with the exhaust cylinder 110 and is arranged along the tangential direction of the rotation of the arc-shaped fan blades 121. In order to increase the flow rate of the ejected gas and ensure that the airflow can drive the fan blades to rotate, the second air guide channel 132 is designed to be conical, and the small end of the second air guide channel is communicated with the exhaust cylinder 110. In addition, the side wall of the first air guide channel 131 is provided with a bubble breaker plate 180, and the bubble breaker plate 180 can be provided with breaking teeth to reduce the aperture through which bubbles pass.
The connecting rod assembly is provided with an upper connecting rod 141 and a lower connecting rod 142 which are rotatably connected, the upper end of the upper connecting rod 141 is rotatably connected with one side, close to the rotating shaft, of the sealing cover 111, a vertical guide structure is arranged between the lower connecting rod 142 and the inner wall of the exhaust funnel 110, the guide structure can be a guide ring 190 fixed on the inner wall of the exhaust funnel 110, and the lower connecting rod 142 penetrates through the guide ring 190 in a sliding mode to limit the longitude of the lower connecting rod 142. The lower end of the lower link 142 has a radial flange, and the ends of the arc-shaped blades 121 can contact with the flange during rotation.
Water flow flows from the main valve body 1 to the water outlet valve body 2, when the pressure difference between the two ends is large, because the mass of bubbles in fluid is lower than that of the fluid, the bubbles and the gas can rise from the flow channel and enter the gas guide cylinder 130, the bubbles are extruded and broken at the corners of the first gas guide channel 131 and the second gas guide channel 132, the gas enters the exhaust cylinder 110 through the second gas guide channel 132, the gas flow entering the exhaust cylinder 110 blows the arc-shaped fan blades 121 to rotate, when the arc-shaped fan blades 121 rotate, the tail ends of the arc-shaped fan blades act on the convex edges of the lower connecting rods 142, the lower connecting rods 142 are pulled down, one ends of the sealing covers 111 are upwards tilted and opened through the action of the connecting rods, exhaust is carried out, turbulence is prevented, and the stable operation of the protection valve is realized.
When no gas enters, because the rotating shaft on the sealing plate is arranged at an eccentric position, under the gravity of the upwarping end sealing plate, the sealing plate is reset and closed, and the exhaust cylinder 110 is closed.
In addition, the flow regulating valve is generally suitable for the medium to be raw water, after the flow regulating valve operates for a period of time, siltation is generated in the valve, the valve effect is influenced, and the valve fails due to serious conditions, so that a drain pipe 200 with a control valve is arranged at the bottom of the main valve body 1, and the drain treatment can be carried out by opening the control valve on the drain pipe 200 regularly.
The flow regulating valve further comprises a reset component for driving the connecting rod component to reset upwards after being pulled downwards so as to ensure that the sealing cover 111 horizontally blocks the exhaust cylinder 110 when the exhaust is not performed. The reset assembly includes a reset spring 150, an upper stop 160, and a lower stop 170.
The upper end of the return spring 150 is fixed to the protruding edge of the lower link 142, and the lower end is fixed to the sidewall of the exhaust stack 110. The arc-shaped fan blades 121 rotate to drive the lower pull rod to move downwards so as to compress the reset spring 150 for energy storage, after the lower pull rod is pressed down for a certain distance, the arc-shaped fan blades 121 continue to rotate and can be separated from the lower pull rod, the lower pull rod upwards resets under the action of the reset spring 150 and the gravity of the sealing cover 111, and the sealing cover 111 is promoted to be closed and reset.
The upper stopper 160 is fixed on the inner wall of the exhaust tube 110 above the cover 111, and is located on one side of the cover 111 close to the rotating shaft, for limiting the cover 111 on the side from being lifted up. The lower stopper 170 is fixed on the inner wall of the exhaust funnel 110 below the cover 111, and is located on one side of the cover 111 away from the rotating shaft, and limits the cover 111 on the side to be turned down. By the arrangement of the upper stop block 160 and the lower stop block 170, the cover 111 can be ensured to be horizontally arranged after being reset, and the periphery of the cover is in contact sealing with the inner wall of the exhaust funnel 110.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (10)
1. A flow regulating valve comprises a main valve body (1), wherein a water outlet valve (2) is fixed at the water outlet end of the main valve body (1), a liner (3) with an opening facing the water outlet valve (2) is fixed in the main valve body (1), a flow channel for fluid to flow to the water outlet valve (2) is reserved between the liner (3) and the main valve body (1), and a cylindrical regulating piston (4) and a driving mechanism for driving the regulating piston (4) to axially move are arranged in the opening end of the liner (3) in a sliding manner; it is characterized in that the preparation method is characterized in that,
the top of main valve body (1) is equipped with exhaust mechanism (100), exhaust mechanism (100) include:
the exhaust cylinder (110) is vertically fixed on the main valve body (1), a sealing cover (111) is rotatably arranged at the top of the exhaust cylinder (110) through a rotating shaft, the rotating shaft is positioned at the eccentric position of the sealing cover (111), and a sealing strip is arranged at the edge of the sealing cover (111);
the rotating shaft (120) can be fixed in the exhaust cylinder (110) in a rotating mode, and a plurality of arc-shaped fan blades (121) are uniformly distributed on the rotating shaft (120) in the circumferential direction;
the air guide cylinder (130) is provided with a first air guide channel (131) and a second air guide channel (132) which are communicated in an angle shape, the first air guide channel (131) is vertically communicated with the main valve body (1), and the first air guide channel (131) is communicated with the exhaust cylinder (110) and arranged tangentially along the rotation of the arc-shaped fan blades (121); and
the connecting rod assembly is provided with an upper connecting rod (141) and a lower connecting rod (142) which are rotatably connected, the upper end of the upper connecting rod (141) is rotatably connected with one side, close to the rotating shaft, of the sealing cover (111), a vertical guide structure is arranged between the lower connecting rod (142) and the inner wall of the exhaust cylinder (110), a radial convex edge is arranged at the lower end of the lower connecting rod (142), and the tail end of the arc-shaped fan blade (121) can be in contact with the convex edge in the rotating process.
2. Flow regulating valve according to claim 1, characterized in that the bottom of the main valve body (1) is provided with a drain (200) with a control valve.
3. The flow regulating valve of claim 1, further comprising a reset assembly for actuating the linkage assembly to reset upwardly, the reset assembly comprising:
the upper end of the return spring (150) is fixed with the convex edge of the lower connecting rod (142), and the lower end of the return spring is fixed with the side wall of the exhaust funnel (110); and
and the upper stop block (160) is fixed on the inner wall of the exhaust barrel (110) above the sealing cover (111), is positioned on one side of the sealing cover (111) close to the rotating shaft, and is used for limiting the upward tilting of the sealing cover (111) on the side.
4. The flow regulating valve of claim 3, wherein the reset assembly further comprises:
and the lower stop block (170) is fixed on the inner wall of the exhaust cylinder (110) below the sealing cover (111), is positioned on one side of the sealing cover (111) far away from the rotating shaft, and limits the downward turning of the sealing cover (111) on the side.
5. The flow regulating valve according to claim 1, wherein the second gas guiding channel (132) is conical, and the small end of the second gas guiding channel is communicated with the exhaust funnel (110).
6. The flow regulating valve according to claim 1, wherein the side wall of the first gas guiding channel (131) is provided with a bubble breaker plate (180).
7. The flow regulating valve according to claim 1, characterized in that a squirrel cage (5) is fixed to one end of the regulating piston (4) facing the outlet valve (2), and the squirrel cage (5) is provided with filtering holes.
8. Flow regulating valve according to claim 1, characterised in that between the regulating piston (4) and the inner vessel (3) there are axial guides and sealing rings in a male-female fit.
9. The flow regulating valve of claim 1, wherein the drive mechanism comprises:
the valve shaft (61) is rotatably arranged in the inner container (3), one end of the valve shaft extends out of the main valve body (1) and is connected with a driving device for driving the valve shaft to rotate;
a crank (62) having one end fixed to the valve shaft (61); and
one end of the connecting rod (63) is connected with the adjusting piston (4) through a connecting disc, and the other end of the connecting rod is rotatably connected with the crank (62).
10. The flow regulating valve of claim 1, wherein the guide structure comprises:
and the guide ring (190) is fixed on the inner wall of the exhaust cylinder (110), and the lower connecting rod (142) penetrates through the guide ring (190) in a sliding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120581992.7U CN215059936U (en) | 2021-03-23 | 2021-03-23 | Flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120581992.7U CN215059936U (en) | 2021-03-23 | 2021-03-23 | Flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215059936U true CN215059936U (en) | 2021-12-07 |
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ID=79154133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120581992.7U Active CN215059936U (en) | 2021-03-23 | 2021-03-23 | Flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215059936U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116928412A (en) * | 2023-04-04 | 2023-10-24 | 兰州理工大学 | Differential pressure pilot fan blade deflection flow regulating and pressure stabilizing valve |
-
2021
- 2021-03-23 CN CN202120581992.7U patent/CN215059936U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116928412A (en) * | 2023-04-04 | 2023-10-24 | 兰州理工大学 | Differential pressure pilot fan blade deflection flow regulating and pressure stabilizing valve |
| CN116928412B (en) * | 2023-04-04 | 2024-01-23 | 兰州理工大学 | Differential pressure pilot fan blade deflection flow regulating and pressure stabilizing valve |
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