CN110715065A - Groove type series multistage pressure reduction regulating valve - Google Patents
Groove type series multistage pressure reduction regulating valve Download PDFInfo
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- CN110715065A CN110715065A CN201911114038.0A CN201911114038A CN110715065A CN 110715065 A CN110715065 A CN 110715065A CN 201911114038 A CN201911114038 A CN 201911114038A CN 110715065 A CN110715065 A CN 110715065A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
- F16K1/422—Valve seats attachable by a threaded connection to the housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention relates to a slotted series multistage pressure reduction regulating valve, which comprises a valve body and a valve cover, wherein a cavity is arranged in the valve body, and the valve cover is arranged at the upper end of the valve body and is detachably connected with the valve body; the valve body is provided with a valve inlet and a valve outlet; a valve seat, a valve core and an energy dissipation chamber are arranged in the cavity; the valve seat is arranged at the top of the valve inlet, the energy dissipation chamber is tightly pressed between the valve seat and the valve cover, and the side wall of the upper end part of the energy dissipation chamber is provided with a flow guide hole for communicating the energy dissipation chamber with the valve outlet; a multi-stage rib plate is arranged in the energy dissipation chamber; the upper part of the valve core vertically penetrates through the valve cover upwards, and the lower part of the valve core vertically penetrates through the energy dissipation chamber downwards to be detachably connected with the valve seat; the lower end of the valve core is provided with a direction changing device for changing the direction of the high-speed medium flow, and the direction changing device is fixedly connected with the lower end part of the valve core; the direction-changing device can be extended into the valve seat. Compared with the prior art, the invention reduces the erosion damage to the sealing surface of the valve core, reduces the impact on the inner wall of the energy dissipation chamber and prolongs the service life of the valve core and the energy dissipation chamber.
Description
Technical Field
The invention relates to the technical field of regulating valves, in particular to a slotted series multistage pressure reduction regulating valve.
Background
The regulating valve is an important link of automatic control, and the regulating precision and the reliability of the regulating valve can influence the safety and the stability of automatic operation. For the high pressure difference working conditions of gas, liquid, steam, solid-containing liquid and other media, the currently and commonly used single-seat plunger type regulating valve or the traditional single-stage sleeve type regulating valve has the defect of short service life.
In the prior art, a groove type serial multistage pressure reduction regulating valve with application number 201811146239.4 comprises a valve body and a valve cover; the valve body is provided with a valve inlet and a valve outlet, and a cavity defined by the valve body and the valve cover is internally provided with a valve seat, a notch groove type valve core capable of axially moving and an energy dissipation chamber; the valve seat is arranged at the top of the valve inlet, the energy dissipation chamber is tightly pressed between the valve seat and the valve cover, and one end of the energy dissipation chamber, which is close to the valve cover, is provided with a flow guide hole for communicating the energy dissipation chamber with the valve outlet; the energy dissipation chamber is hollow and columnar, and a multistage ribbed plate arranged on the inner wall of the energy dissipation chamber is matched with the slotted valve core in a sliding manner to form a multistage pressure reduction throttling unit which is connected in series; the notch groove type valve core is provided with a plurality of pressure reduction grooves which respectively correspond to the multistage rib plates along the axial direction; under different opening degrees, the medium of the notch type valve core has the following three overflowing states: when the opening degree is zero, the notch type valve core is attached to the valve seat to form a sealing pair to cut off the medium circulation; or when the opening degree is small, the notch type valve core is separated from the valve seat, and meanwhile, the adjacent decompression throttling units are not communicated through the decompression grooves and the medium is in a gap flow state; or when the opening degree is large, the notch type valve core is separated from the valve seat, and meanwhile, the adjacent decompression throttling units are communicated through the decompression grooves, so that the medium is in a flow adjustable state; however, the following problems still exist in the technical scheme: under the working condition of solid medium, the high-speed medium flow seriously erodes the sealing surface of the slotted valve core when the opening is small, and the sealing surface is easily flushed out of a streamline groove, so that the sealing surface has poor sealing property after being used for a period of time, and the service life of the slotted valve core is short; it is necessary to solve these problems.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the invention aims to provide the notch groove type series multistage pressure reduction regulating valve which reduces the corrosion damage to the sealing surface of the valve core and prolongs the service life.
The technical scheme for solving the technical problems is as follows: a notch groove type series multistage pressure reduction regulating valve comprises a valve body and a valve cover, wherein a cavity is arranged in the valve body, and the valve cover is arranged at the upper end of the valve body and is detachably connected with the valve body; the valve body is provided with a valve inlet and a valve outlet which are communicated with the cavity; a valve seat, a valve core capable of axially moving and an energy dissipation chamber are arranged in the cavity; the valve seat is arranged at the top of the valve inlet, the energy dissipation chamber is tightly pressed between the valve seat and the valve cover, and a flow guide hole for communicating the energy dissipation chamber with the valve outlet is formed in the side wall of the upper end part of the energy dissipation chamber; a multi-stage rib plate is arranged in the energy dissipation chamber; the upper part of the valve core vertically penetrates through the valve cover upwards, and the lower part of the valve core vertically penetrates through the energy dissipation chamber downwards to be detachably connected with the valve seat; the lower end of the valve core is provided with a redirection device for changing the direction of high-speed medium flow, and the redirection device is fixedly connected with the lower end part of the valve core; the direction-changing device can extend into the valve seat.
The invention has the beneficial effects that: the high-speed medium flow changes the flow direction through the direction changing device, the erosion damage to the sealing surface of the valve core is reduced after the high-speed medium flow changes the direction, meanwhile, the high-speed medium flow can be prevented from flowing in the same direction, the impact on the inner wall of the energy dissipation chamber is reduced, the erosion damage generated on the valve core and in the energy dissipation chamber by flash evaporation and cavitation is effectively inhibited, and the service life of the valve core and the energy dissipation chamber is prolonged.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the upper end of the direction changing device is sleeved on the lower end of the valve core, the lower end of the direction changing device is of an inverted conical structure, a plurality of groove bodies are arranged on the lower end of the direction changing device, one end of each groove body extends to the tip of the lower end of the conical structure, the other end of each groove body extends to the annular edge of the conical structure, and the other end of each groove body is arranged at equal intervals along the annular edge of the conical structure.
The beneficial effect of adopting the further scheme is that: the conical structure can prevent high-speed medium flow from directly impacting the sealing surface of the valve core, and reduce the erosion damage to the sealing surface of the valve core; the high-speed medium can be effectively prevented from flowing in the same direction, and the service life of the valve core and the energy dissipation chamber is prolonged.
Further, a plurality of the groove bodies are consistent in structure and are all arc-shaped.
The beneficial effect of adopting the further scheme is that: the vibration of the valve core can be effectively reduced, the direct impact of high-speed medium flow to the sealing surface of the valve core can be avoided, and the erosion damage to the sealing surface of the valve core is reduced.
Furthermore, the upper end part of the direction changing device is a sleeve with an upward opening, a magnet is arranged in the sleeve and is arranged at the bottom of the inner side of the sleeve, and the magnet is fixedly connected with the bottom of the inner side of the sleeve; the sleeve is sleeved at the lower end part of the valve core, and the magnet magnetically attracts the lower end part of the valve core; the sleeve is fixedly connected with the conical structure.
The beneficial effect of adopting the further scheme is that: the flow direction of a plurality of strands of medium flows can be changed continuously, the impact on a specific position of the inner wall of the energy dissipation chamber can be further reduced, and the service life of the energy dissipation chamber is prolonged.
Furthermore, a vertically penetrating channel is arranged on the valve seat, a circular first slope surface is arranged on the valve seat corresponding to the upper part of the channel, and a circular second slope surface is arranged on the lower end part of the valve core; the first slope surface and the second slope surface are matched to form a sealing pair; the direction-changing device is arranged at the lower end of the second slope surface, and the direction-changing device can extend into the channel.
The beneficial effect of adopting the further scheme is that: the impact of high-speed medium flow to the second slope surface is avoided, the service life of the second slope surface is prolonged, and therefore the service life of the valve core is prolonged.
Furthermore, a plurality of pressure reduction grooves are arranged on the valve core, and the pressure reduction grooves correspond to the multi-stage rib plates one by one respectively; and the multistage ribbed plates of the energy dissipation chamber are matched with the plurality of pressure reduction grooves of the valve core to form multistage pressure reduction throttling units which are connected in series.
The beneficial effect of adopting the further scheme is that: the scouring damage of high-speed medium flow to the sealing surface under the working condition of small opening degree is effectively avoided; the multistage pressure reduction throttling units are connected in series, the flow channel is relatively wide, and the valve jam and blockage caused by solid particles in a medium can be effectively prevented.
Further, the relief grooves penetrate the valve element in the radial direction of the valve element.
The beneficial effect of adopting the further scheme is that: effectively inhibit the erosion damage of flash evaporation and cavitation on the valve core and prolong the service life of the valve core.
Drawings
FIG. 1 is a schematic structural view of a groove-type series multistage pressure reducing regulating valve in a closed state according to the present invention;
FIG. 2 is a schematic structural view of a fully open state of a slotted series multistage pressure reducing regulating valve according to the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2 at A;
FIG. 4 is a schematic structural diagram of a direction-changing device according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the valve comprises a valve body 1.1, a cavity 1.2, a valve inlet 1.3 and a valve outlet;
2. the valve cover 3, the valve seat 3.1, the channel 3.2 and the first slope surface;
4. the valve core, 4.1, the second slope surface, 4.2 and the pressure reducing groove;
5. the energy dissipation chamber comprises 5.1 parts of energy dissipation chambers, 5.2 parts of flow guide holes and rib plates;
6. the direction changing device is 6.1, the conical structure is 6.2, the groove body is 6.3, the sleeve is 6.4, and the magnet is arranged.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the notch type series multistage pressure reduction regulating valve comprises a valve body 1 and a valve cover 2, wherein a cavity 1.1 is arranged in the valve body 1, and the valve cover 2 is arranged at the upper end of the valve body 1 and detachably connected with the valve body 1; the valve body 1 is provided with a valve inlet 1.2 and a valve outlet 1.3 which are communicated with the cavity 1.1; a valve seat 3, a valve core 4 capable of axially moving and an energy dissipation chamber 5 are arranged in the cavity 1.1; the valve seat 3 is arranged at the top of the valve inlet 1.2, the energy dissipation chamber 5 is tightly pressed between the valve seat 3 and the valve cover 2, and a flow guide hole 5.1 for communicating the energy dissipation chamber 5 with the valve outlet 1.3 is formed in the side wall of the upper end part of the energy dissipation chamber 5; a multi-stage rib plate 5.2 is arranged in the energy dissipation chamber 5; the upper part of the valve core 4 vertically penetrates through the valve cover 2 upwards, and the lower part of the valve core 4 vertically penetrates through the energy dissipation chamber 5 downwards to be detachably connected with the valve seat 3; the lower end of the valve core 4 is provided with a redirection device 6 for changing the direction of high-speed medium flow, and the redirection device 6 is fixedly connected with the lower end part of the valve core 4; the redirecting means 6 can extend into the valve seat 3.
The valve inlet 1.2 is located at the lower end of the valve body 1, high-speed medium flow is introduced into the valve inlet 1.2, the high-speed medium flows through the valve seat 3 and impacts the redirection device 6, the redirection device 6 changes the flow direction of the high-speed medium flow and then enters the energy dissipation chamber 5, the valve core 4 is matched with the multi-stage ribbed plates 5.2 of the energy dissipation chamber 5 to perform multi-stage pressure reduction and throttling on the high-speed medium flow, and the high-speed medium flows through the flow guide holes 5.1 and is guided out of the cavity 1.1 and then is guided out through the.
The valve cover 2 is detachably connected with the valve body 1 through a flange and a bolt; four-stage rib plates 5.2 which are arranged at equal intervals are arranged in the energy dissipation chamber 5; the rib plates 5.2 at each stage are respectively connected with the valve core 4 in a sliding way, and the rib plates 5.2 at the four stages are used for accurately guiding the valve core 4, so that the valve core 4 is favorably prevented from vibration; the valve seat 3 is arranged on the step of the inner cavity of the valve body 1 and is pressed by the energy dissipation chamber 5 and is correspondingly arranged at the top of the valve inlet 1.2;
the valve core 4 is matched with the multistage ribbed plates 5.2 of the energy dissipation chamber 5 to perform multistage pressure reduction and throttling on high-speed medium flow, so that erosion damage generated on the valve core 4 and in the energy dissipation chamber 5 by flash evaporation and cavitation can be effectively inhibited.
The high-speed medium flow ejected from the valve seat 3 changes the flow direction through the direction changing device 6, the erosion damage to the sealing surface of the valve core 4 is reduced after the high-speed medium flow changes the direction, meanwhile, the high-speed medium flow can be prevented from flowing in the same direction, the impact on the inner wall of the energy dissipation chamber 5 is reduced, and the service lives of the valve core 4 and the energy dissipation chamber 5 are prolonged.
In the above embodiment, the upper end of the direction changing device 6 is sleeved on the lower end of the valve core 4, the lower end of the direction changing device 6 is of an inverted conical structure 6.1, the lower end of the direction changing device 6 is provided with a plurality of groove bodies 6.2, one end of each groove body 6.2 extends to the tip of the lower end of the conical structure 6.1, the other end of each groove body 6.2 extends to the annular edge of the conical structure 6.1, and the other ends of the groove bodies 6.2 are arranged at equal intervals along the annular edge of the conical structure 6.1.
When the high-speed medium flow impacts the tip of the conical structure 6.1, the high-speed medium flow is separated into a plurality of medium flows, and the plurality of medium flows flow along the groove bodies 6.2 respectively, so that the high-speed medium flow is prevented from directly impacting a sealing surface of the valve core 4, and the erosion damage to the sealing surface of the valve core 4 is reduced; multiple strands of medium flows respectively flow along the grooves 6.2, so that the high-speed medium can be effectively prevented from flowing in the same direction, the impact on the inner wall of the energy dissipation chamber 5 is reduced, and the service lives of the valve core 4 and the energy dissipation chamber 5 are prolonged.
In the above embodiment, the plurality of the groove bodies 6.2 have the same structure and are all arc-shaped.
A plurality of the groove bodies 6.2 are of arc structures, can drive a plurality of medium flows to flow out to the inner wall of the energy dissipation chamber 5 along the radial direction of the valve core 4, can effectively reduce the vibration of the valve core 4, can also avoid the direct impact of the high-speed medium flow to the sealing surface of the valve core 4, and further reduce the erosion damage to the sealing surface of the valve core 4.
In the above embodiment, the upper end of the direction changing device 6 is a sleeve 6.3 with an upward opening, a magnet 6.4 is arranged in the sleeve 6.3, the magnet 6.4 is arranged at the bottom of the inner side of the sleeve 6.3, and the magnet 6.4 is fixedly connected with the bottom of the inner side of the sleeve 6.3; the sleeve 6.3 is sleeved at the lower end part of the valve core 4, and the magnet 6.4 magnetically attracts the lower end part of the valve core 4; the sleeve 6.3 is fixedly connected with the conical structure 6.1.
When the high-speed medium flow impacts the tip of the conical structure 6.1, the high-speed medium flow is separated into a plurality of medium flows, the plurality of medium flows flow along the plurality of groove bodies 6.2 respectively, and meanwhile, the plurality of medium flows generate acting force on the redirecting device 6, so that the redirecting device 6 can be connected more stably; meanwhile, the multi-stream medium flow can enable the redirection device 6 to overcome the action of magnetic force and friction force of the magnet 6.4 and rotate slowly, so that the flow direction of the multi-stream medium flow is changed continuously, impact on a specific position of the inner wall of the energy dissipation chamber 5 can be further reduced, and the service life of the energy dissipation chamber 5 is prolonged.
In the above embodiment, the valve seat 3 is provided with a vertically penetrating channel 3.1, the upper part of the valve seat 3 corresponding to the channel 3.1 is provided with a circular first slope surface 3.2, and the lower end part of the valve core 4 is provided with a circular second slope surface 4.1; the first slope surface 3.2 and the second slope surface 4.1 are matched to form a sealing pair; the direction-changing device 6 is arranged at the lower end of the second slope surface 4.1, and the direction-changing device 6 can extend into the channel 3.1.
The high-speed medium flow ejected from the channel 3.1 changes the flow direction through the redirecting device 6, the annular second slope surface 4.1 is arranged at the upper end of the redirecting device 6, the high-speed medium flow changed in the flow direction through the redirecting device 6 is prevented from impacting the second slope surface 4.1, the service life of the second slope surface 4.1 is prolonged, and therefore the service life of the valve core 4 is prolonged.
In the above embodiment, the valve core 4 is provided with a plurality of pressure reducing grooves 4.2, and the plurality of pressure reducing grooves 4.2 correspond to the plurality of rib plates 5.2 one by one; the multistage ribbed plates 5.2 of the energy dissipation chamber 5 and the plurality of pressure reduction grooves 4.2 of the valve core 4 are matched to form a multistage pressure reduction throttling unit which is connected in series.
Four stages of pressure reducing grooves 4.2 are formed in the valve core 4, the stage number of the pressure reducing grooves 4.2 is the same as that of the rib plates 5.2, the pressure reducing grooves 4.2 of each stage on the valve core 4 and the rib plates 5.2 of the corresponding stage number on the inner wall of the energy dissipation chamber 5 form pressure reducing throttling units of each stage, and each pressure reducing throttling unit is provided with a clearance air flow stroke which is 15% of the total stroke;
under different opening degrees of the valve core 4, medium flows have the following three overflowing states: when the opening degree is zero, the valve core 4 is attached to the valve seat 3 to form a sealing pair to cut off the flow of medium; when the opening degree is small, the valve core 4 is separated from the valve seat 3, and meanwhile, the adjacent decompression throttling units are not communicated through the decompression groove 4.2 and the medium flow is in a gap flow state; or when the opening degree is large, the valve core 4 is separated from the valve seat 3, and meanwhile, the adjacent decompression throttling units are communicated through the decompression groove 4.2, so that the medium flow is in a flow-adjustable state.
According to the technical scheme, the throttling surface and the sealing surface are separately designed, so that the flushing damage of a high-speed medium flow to the sealing surface under a small-opening working condition is effectively avoided; the four-stage pressure reduction throttling units are mutually connected in series, and the flow channel is relatively wide, so that the jamming and the blockage of the valve caused by solid particles in the medium can be effectively prevented.
In the above embodiment, the relief grooves 4.2 each penetrate the valve body 4 in the radial direction of the valve body 4. When the high-speed medium flows through the energy dissipation chamber 5 and enters the plurality of pressure reduction grooves 4.2, the high-speed medium flows enter the pressure reduction grooves 4.2 in two directions, and the two high-speed medium flows impact each other, so that the erosion damage of flash evaporation and cavitation on the valve core 4 is effectively inhibited, and the service life of the valve core 4 is prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A notch-type series multistage pressure reduction regulating valve comprises a valve body (1) and a valve cover (2), wherein a cavity (1.1) is arranged in the valve body (1), and the valve cover (2) is arranged at the upper end of the valve body (1) and is detachably connected with the valve body (1); the valve body (1) is provided with a valve inlet (1.2) and a valve outlet (1.3) which are communicated with the cavity (1.1); a valve seat (3), a valve core (4) capable of axially moving and an energy dissipation chamber (5) are arranged in the cavity (1.1); the valve seat (3) is arranged at the top of the valve inlet (1.2), the energy dissipation chamber (5) is tightly pressed between the valve seat (3) and the valve cover (2), and a flow guide hole (5.1) for communicating the energy dissipation chamber (5) with the valve outlet (1.3) is formed in the side wall of the upper end part of the energy dissipation chamber (5); a multi-stage ribbed plate (5.2) is arranged in the energy dissipation chamber (5); the upper part of the valve core (4) vertically penetrates through the valve cover (2) upwards, and the lower part of the valve core (4) vertically penetrates through the energy dissipation chamber (5) downwards to be detachably connected with the valve seat (3); the method is characterized in that: the lower end of the valve core (4) is provided with a redirection device (6) for changing the direction of high-speed medium flow, and the redirection device (6) is fixedly connected with the lower end part of the valve core (4); the direction-changing device (6) can extend into the valve seat (3).
2. The grooved series multistage pressure reducing regulating valve as claimed in claim 1, wherein: the upper end of the direction changing device (6) is sleeved on the lower end of the valve core (4), the lower end of the direction changing device (6) is of an inverted conical structure (6.1), a plurality of groove bodies (6.2) are arranged on the lower end of the direction changing device (6), one end of each groove body (6.2) extends to the tip of the lower end of the conical structure (6.1), the other end of each groove body (6.2) extends to the annular edge of the conical structure (6.1), and the other end of each groove body (6.2) is arranged at equal intervals along the annular edge of the conical structure (6.1).
3. The grooved series multistage pressure reducing regulating valve as claimed in claim 2, wherein: the structures of the plurality of groove bodies (6.2) are consistent and are all arc-shaped structures.
4. The grooved series multistage pressure reducing regulating valve as claimed in claim 3, wherein: the upper end part of the direction changing device (6) is provided with a sleeve (6.3) with an upward opening, a magnet (6.4) is arranged in the sleeve (6.3), the magnet (6.4) is arranged at the bottom of the inner side of the sleeve (6.3), and the magnet (6.4) is fixedly connected with the bottom of the inner side of the sleeve (6.3); the sleeve (6.3) is sleeved at the lower end part of the valve core (4), and the magnet (6.4) magnetically attracts the lower end part of the valve core (4); the sleeve (6.3) is fixedly connected with the conical structure (6.1).
5. The grooved series multistage pressure reducing regulating valve as claimed in claim 2, wherein: a vertically penetrating channel (3.1) is arranged on the valve seat (3), a circular first slope surface (3.2) is arranged on the valve seat (3) corresponding to the upper part of the channel (3.1), and a circular second slope surface (4.1) is arranged on the lower end part of the valve core (4); the first slope surface (3.2) and the second slope surface (4.1) are matched to form a sealing pair; the direction-changing device (6) is arranged at the lower end of the second slope surface (4.1), and the direction-changing device (6) can extend into the channel (3.1).
6. The grooved series multistage pressure reducing regulating valve as claimed in claim 1, wherein: the valve core (4) is provided with a plurality of pressure reducing grooves (4.2), and the pressure reducing grooves (4.2) are respectively in one-to-one correspondence with the multi-stage rib plates (5.2); and the multistage ribbed plates (5.2) of the energy dissipation chamber (5) are matched with the plurality of decompression grooves (4.2) of the valve core (4) to form multistage decompression throttling units which are mutually connected in series.
7. The grooved series multistage pressure reducing regulating valve as claimed in claim 6, wherein: the relief grooves (4.2) all penetrate through the valve core (4) along the radial direction of the valve core (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114038.0A CN110715065A (en) | 2019-11-14 | 2019-11-14 | Groove type series multistage pressure reduction regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114038.0A CN110715065A (en) | 2019-11-14 | 2019-11-14 | Groove type series multistage pressure reduction regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110715065A true CN110715065A (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911114038.0A Pending CN110715065A (en) | 2019-11-14 | 2019-11-14 | Groove type series multistage pressure reduction regulating valve |
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| CN (1) | CN110715065A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2292190Y (en) * | 1997-01-06 | 1998-09-23 | 米力田 | Flushing-resistant high-pressure throttle stop valve |
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| CN204692841U (en) * | 2015-05-18 | 2015-10-07 | 中山市雅西环保科技有限公司 | A kind of flow regulator |
| CN109139929A (en) * | 2018-09-29 | 2019-01-04 | 合肥通用机械研究院有限公司 | A kind of notch type series multistage decompression valve |
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| JPH11248031A (en) * | 1998-03-04 | 1999-09-14 | Kayaba Ind Co Ltd | Poppet valve |
| CN2597768Y (en) * | 2003-01-07 | 2004-01-07 | 彭国军 | Guiding washing-resisting throttle stop emptying valve |
| KR20080068184A (en) * | 2007-01-18 | 2008-07-23 | 추교중 | Heating flow control valve for distributor |
| KR100839143B1 (en) * | 2007-07-25 | 2008-06-19 | 추교중 | Flow control valve |
| CN203067792U (en) * | 2012-12-27 | 2013-07-17 | 吴忠中创自控阀有限公司 | Multistage throttling regulating valve |
| CN203880152U (en) * | 2014-06-10 | 2014-10-15 | 北方工具设备（宁波）有限公司 | Sprayer one-way valve |
| CN204692841U (en) * | 2015-05-18 | 2015-10-07 | 中山市雅西环保科技有限公司 | A kind of flow regulator |
| CN109139929A (en) * | 2018-09-29 | 2019-01-04 | 合肥通用机械研究院有限公司 | A kind of notch type series multistage decompression valve |
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Application publication date: 20200121 |